diff options
| author | Diego Biurrun <diego@biurrun.de> | 2009-06-11 09:31:31 +0000 |
|---|---|---|
| committer | Diego Biurrun <diego@biurrun.de> | 2009-06-11 09:31:31 +0000 |
| commit | b761659befa6b8d3a238527b31df9ad7c80ce911 (patch) | |
| tree | a11d2f91065b64ae45c37b6e5791c70ec354c68c /libavcodec | |
| parent | 844d17fb14844779183f87aac539132360c31cd0 (diff) | |
Split decoder-specific code off from vc1.c into vc1dec.c and keep code
shared between decoder and parser in vc1.c.
Originally committed as revision 19152 to svn://svn.ffmpeg.org/ffmpeg/trunk
Diffstat (limited to 'libavcodec')
| -rw-r--r-- | libavcodec/Makefile | 6 | ||||
| -rw-r--r-- | libavcodec/vc1.c | 3307 | ||||
| -rw-r--r-- | libavcodec/vc1dec.c | 3367 |
3 files changed, 3372 insertions, 3308 deletions
diff --git a/libavcodec/Makefile b/libavcodec/Makefile index e0d57cf295..d2687d78ef 100644 --- a/libavcodec/Makefile +++ b/libavcodec/Makefile @@ -236,9 +236,9 @@ OBJS-$(CONFIG_V210_DECODER) += v210dec.o OBJS-$(CONFIG_V210_ENCODER) += v210enc.o OBJS-$(CONFIG_V210X_DECODER) += v210x.o OBJS-$(CONFIG_VB_DECODER) += vb.o -OBJS-$(CONFIG_VC1_DECODER) += vc1.o vc1data.o vc1dsp.o msmpeg4data.o h263dec.o h263.o intrax8.o intrax8dsp.o error_resilience.o mpegvideo.o msmpeg4.o -OBJS-$(CONFIG_VC1_VAAPI_HWACCEL) += vc1.o vc1data.o vc1dsp.o msmpeg4data.o h263dec.o h263.o intrax8.o intrax8dsp.o error_resilience.o mpegvideo.o msmpeg4.o vaapi_vc1.o -OBJS-$(CONFIG_VC1_VDPAU_DECODER) += vc1.o vc1data.o vc1dsp.o msmpeg4data.o h263dec.o h263.o intrax8.o intrax8dsp.o error_resilience.o mpegvideo.o msmpeg4.o +OBJS-$(CONFIG_VC1_DECODER) += vc1dec.o vc1.o vc1data.o vc1dsp.o msmpeg4data.o h263dec.o h263.o intrax8.o intrax8dsp.o error_resilience.o mpegvideo.o msmpeg4.o +OBJS-$(CONFIG_VC1_VAAPI_HWACCEL) += vc1dec.o vc1.o vc1data.o vc1dsp.o msmpeg4data.o h263dec.o h263.o intrax8.o intrax8dsp.o error_resilience.o mpegvideo.o msmpeg4.o vaapi_vc1.o +OBJS-$(CONFIG_VC1_VDPAU_DECODER) += vc1dec.o vc1.o vc1data.o vc1dsp.o msmpeg4data.o h263dec.o h263.o intrax8.o intrax8dsp.o error_resilience.o mpegvideo.o msmpeg4.o OBJS-$(CONFIG_VCR1_DECODER) += vcr1.o OBJS-$(CONFIG_VCR1_ENCODER) += vcr1.o OBJS-$(CONFIG_VMDAUDIO_DECODER) += vmdav.o diff --git a/libavcodec/vc1.c b/libavcodec/vc1.c index 159ed9c3ce..964e1266e2 100644 --- a/libavcodec/vc1.c +++ b/libavcodec/vc1.c @@ -1,5 +1,5 @@ /* - * VC-1 and WMV3 decoder + * VC-1 and WMV3 decoder common code * Copyright (c) 2006-2007 Konstantin Shishkov * Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer * @@ -22,7 +22,7 @@ /** * @file libavcodec/vc1.c - * VC-1 and WMV3 decoder + * VC-1 and WMV3 decoder common code * */ #include "internal.h" @@ -31,113 +31,13 @@ #include "mpegvideo.h" #include "vc1.h" #include "vc1data.h" -#include "vc1acdata.h" #include "msmpeg4data.h" #include "unary.h" #include "simple_idct.h" -#include "mathops.h" -#include "vdpau_internal.h" #undef NDEBUG #include <assert.h> -#define MB_INTRA_VLC_BITS 9 -#define DC_VLC_BITS 9 -#define AC_VLC_BITS 9 -static const uint16_t table_mb_intra[64][2]; - - -static const uint16_t vlc_offs[] = { - 0, 520, 552, 616, 1128, 1160, 1224, 1740, 1772, 1836, 1900, 2436, - 2986, 3050, 3610, 4154, 4218, 4746, 5326, 5390, 5902, 6554, 7658, 8620, - 9262, 10202, 10756, 11310, 12228, 15078 -}; - -/** - * Init VC-1 specific tables and VC1Context members - * @param v The VC1Context to initialize - * @return Status - */ -static int vc1_init_common(VC1Context *v) -{ - static int done = 0; - int i = 0; - static VLC_TYPE vlc_table[15078][2]; - - v->hrd_rate = v->hrd_buffer = NULL; - - /* VLC tables */ - if(!done) - { - INIT_VLC_STATIC(&ff_vc1_bfraction_vlc, VC1_BFRACTION_VLC_BITS, 23, - ff_vc1_bfraction_bits, 1, 1, - ff_vc1_bfraction_codes, 1, 1, 1 << VC1_BFRACTION_VLC_BITS); - INIT_VLC_STATIC(&ff_vc1_norm2_vlc, VC1_NORM2_VLC_BITS, 4, - ff_vc1_norm2_bits, 1, 1, - ff_vc1_norm2_codes, 1, 1, 1 << VC1_NORM2_VLC_BITS); - INIT_VLC_STATIC(&ff_vc1_norm6_vlc, VC1_NORM6_VLC_BITS, 64, - ff_vc1_norm6_bits, 1, 1, - ff_vc1_norm6_codes, 2, 2, 556); - INIT_VLC_STATIC(&ff_vc1_imode_vlc, VC1_IMODE_VLC_BITS, 7, - ff_vc1_imode_bits, 1, 1, - ff_vc1_imode_codes, 1, 1, 1 << VC1_IMODE_VLC_BITS); - for (i=0; i<3; i++) - { - ff_vc1_ttmb_vlc[i].table = &vlc_table[vlc_offs[i*3+0]]; - ff_vc1_ttmb_vlc[i].table_allocated = vlc_offs[i*3+1] - vlc_offs[i*3+0]; - init_vlc(&ff_vc1_ttmb_vlc[i], VC1_TTMB_VLC_BITS, 16, - ff_vc1_ttmb_bits[i], 1, 1, - ff_vc1_ttmb_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC); - ff_vc1_ttblk_vlc[i].table = &vlc_table[vlc_offs[i*3+1]]; - ff_vc1_ttblk_vlc[i].table_allocated = vlc_offs[i*3+2] - vlc_offs[i*3+1]; - init_vlc(&ff_vc1_ttblk_vlc[i], VC1_TTBLK_VLC_BITS, 8, - ff_vc1_ttblk_bits[i], 1, 1, - ff_vc1_ttblk_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC); - ff_vc1_subblkpat_vlc[i].table = &vlc_table[vlc_offs[i*3+2]]; - ff_vc1_subblkpat_vlc[i].table_allocated = vlc_offs[i*3+3] - vlc_offs[i*3+2]; - init_vlc(&ff_vc1_subblkpat_vlc[i], VC1_SUBBLKPAT_VLC_BITS, 15, - ff_vc1_subblkpat_bits[i], 1, 1, - ff_vc1_subblkpat_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC); - } - for(i=0; i<4; i++) - { - ff_vc1_4mv_block_pattern_vlc[i].table = &vlc_table[vlc_offs[i*3+9]]; - ff_vc1_4mv_block_pattern_vlc[i].table_allocated = vlc_offs[i*3+10] - vlc_offs[i*3+9]; - init_vlc(&ff_vc1_4mv_block_pattern_vlc[i], VC1_4MV_BLOCK_PATTERN_VLC_BITS, 16, - ff_vc1_4mv_block_pattern_bits[i], 1, 1, - ff_vc1_4mv_block_pattern_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC); - ff_vc1_cbpcy_p_vlc[i].table = &vlc_table[vlc_offs[i*3+10]]; - ff_vc1_cbpcy_p_vlc[i].table_allocated = vlc_offs[i*3+11] - vlc_offs[i*3+10]; - init_vlc(&ff_vc1_cbpcy_p_vlc[i], VC1_CBPCY_P_VLC_BITS, 64, - ff_vc1_cbpcy_p_bits[i], 1, 1, - ff_vc1_cbpcy_p_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC); - ff_vc1_mv_diff_vlc[i].table = &vlc_table[vlc_offs[i*3+11]]; - ff_vc1_mv_diff_vlc[i].table_allocated = vlc_offs[i*3+12] - vlc_offs[i*3+11]; - init_vlc(&ff_vc1_mv_diff_vlc[i], VC1_MV_DIFF_VLC_BITS, 73, - ff_vc1_mv_diff_bits[i], 1, 1, - ff_vc1_mv_diff_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC); - } - for(i=0; i<8; i++){ - ff_vc1_ac_coeff_table[i].table = &vlc_table[vlc_offs[i+21]]; - ff_vc1_ac_coeff_table[i].table_allocated = vlc_offs[i+22] - vlc_offs[i+21]; - init_vlc(&ff_vc1_ac_coeff_table[i], AC_VLC_BITS, vc1_ac_sizes[i], - &vc1_ac_tables[i][0][1], 8, 4, - &vc1_ac_tables[i][0][0], 8, 4, INIT_VLC_USE_NEW_STATIC); - } - //FIXME: switching to INIT_VLC_STATIC() results in incorrect decoding - init_vlc(&ff_msmp4_mb_i_vlc, MB_INTRA_VLC_BITS, 64, - &ff_msmp4_mb_i_table[0][1], 4, 2, - &ff_msmp4_mb_i_table[0][0], 4, 2, INIT_VLC_USE_STATIC); - done = 1; - } - - /* Other defaults */ - v->pq = -1; - v->mvrange = 0; /* 7.1.1.18, p80 */ - - return 0; -} - /***********************************************************************/ /** * @defgroup vc1bitplane VC-1 Bitplane decoding @@ -333,22 +233,6 @@ static int bitplane_decoding(uint8_t* data, int *raw_flag, VC1Context *v) /** @} */ //Bitplane group -static void vc1_loop_filter_iblk(MpegEncContext *s, int pq) -{ - int i, j; - if(!s->first_slice_line) - s->dsp.vc1_v_loop_filter16(s->dest[0], s->linesize, pq); - s->dsp.vc1_v_loop_filter16(s->dest[0] + 8*s->linesize, s->linesize, pq); - for(i = !s->mb_x*8; i < 16; i += 8) - s->dsp.vc1_h_loop_filter16(s->dest[0] + i, s->linesize, pq); - for(j = 0; j < 2; j++){ - if(!s->first_slice_line) - s->dsp.vc1_v_loop_filter8(s->dest[j+1], s->uvlinesize, pq); - if(s->mb_x) - s->dsp.vc1_h_loop_filter8(s->dest[j+1], s->uvlinesize, pq); - } -} - /***********************************************************************/ /** VOP Dquant decoding * @param v VC-1 Context @@ -394,408 +278,6 @@ static int vop_dquant_decoding(VC1Context *v) return 0; } -/** Put block onto picture - */ -static void vc1_put_block(VC1Context *v, DCTELEM block[6][64]) -{ - uint8_t *Y; - int ys, us, vs; - DSPContext *dsp = &v->s.dsp; - - if(v->rangeredfrm) { - int i, j, k; - for(k = 0; k < 6; k++) - for(j = 0; j < 8; j++) - for(i = 0; i < 8; i++) - block[k][i + j*8] = ((block[k][i + j*8] - 128) << 1) + 128; - - } - ys = v->s.current_picture.linesize[0]; - us = v->s.current_picture.linesize[1]; - vs = v->s.current_picture.linesize[2]; - Y = v->s.dest[0]; - - dsp->put_pixels_clamped(block[0], Y, ys); - dsp->put_pixels_clamped(block[1], Y + 8, ys); - Y += ys * 8; - dsp->put_pixels_clamped(block[2], Y, ys); - dsp->put_pixels_clamped(block[3], Y + 8, ys); - - if(!(v->s.flags & CODEC_FLAG_GRAY)) { - dsp->put_pixels_clamped(block[4], v->s.dest[1], us); - dsp->put_pixels_clamped(block[5], v->s.dest[2], vs); - } -} - -/** Do motion compensation over 1 macroblock - * Mostly adapted hpel_motion and qpel_motion from mpegvideo.c - */ -static void vc1_mc_1mv(VC1Context *v, int dir) -{ - MpegEncContext *s = &v->s; - DSPContext *dsp = &v->s.dsp; - uint8_t *srcY, *srcU, *srcV; - int dxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y; - - if(!v->s.last_picture.data[0])return; - - mx = s->mv[dir][0][0]; - my = s->mv[dir][0][1]; - - // store motion vectors for further use in B frames - if(s->pict_type == FF_P_TYPE) { - s->current_picture.motion_val[1][s->block_index[0]][0] = mx; - s->current_picture.motion_val[1][s->block_index[0]][1] = my; - } - uvmx = (mx + ((mx & 3) == 3)) >> 1; - uvmy = (my + ((my & 3) == 3)) >> 1; - if(v->fastuvmc) { - uvmx = uvmx + ((uvmx<0)?(uvmx&1):-(uvmx&1)); - uvmy = uvmy + ((uvmy<0)?(uvmy&1):-(uvmy&1)); - } - if(!dir) { - srcY = s->last_picture.data[0]; - srcU = s->last_picture.data[1]; - srcV = s->last_picture.data[2]; - } else { - srcY = s->next_picture.data[0]; - srcU = s->next_picture.data[1]; - srcV = s->next_picture.data[2]; - } - - src_x = s->mb_x * 16 + (mx >> 2); - src_y = s->mb_y * 16 + (my >> 2); - uvsrc_x = s->mb_x * 8 + (uvmx >> 2); - uvsrc_y = s->mb_y * 8 + (uvmy >> 2); - - if(v->profile != PROFILE_ADVANCED){ - src_x = av_clip( src_x, -16, s->mb_width * 16); - src_y = av_clip( src_y, -16, s->mb_height * 16); - uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8); - uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8); - }else{ - src_x = av_clip( src_x, -17, s->avctx->coded_width); - src_y = av_clip( src_y, -18, s->avctx->coded_height + 1); - uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1); - uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1); - } - - srcY += src_y * s->linesize + src_x; - srcU += uvsrc_y * s->uvlinesize + uvsrc_x; - srcV += uvsrc_y * s->uvlinesize + uvsrc_x; - - /* for grayscale we should not try to read from unknown area */ - if(s->flags & CODEC_FLAG_GRAY) { - srcU = s->edge_emu_buffer + 18 * s->linesize; - srcV = s->edge_emu_buffer + 18 * s->linesize; - } - - if(v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP) - || (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx&3) - 16 - s->mspel*3 - || (unsigned)(src_y - s->mspel) > s->v_edge_pos - (my&3) - 16 - s->mspel*3){ - uint8_t *uvbuf= s->edge_emu_buffer + 19 * s->linesize; - - srcY -= s->mspel * (1 + s->linesize); - ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 17+s->mspel*2, 17+s->mspel*2, - src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos); - srcY = s->edge_emu_buffer; - ff_emulated_edge_mc(uvbuf , srcU, s->uvlinesize, 8+1, 8+1, - uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1); - ff_emulated_edge_mc(uvbuf + 16, srcV, s->uvlinesize, 8+1, 8+1, - uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1); - srcU = uvbuf; - srcV = uvbuf + 16; - /* if we deal with range reduction we need to scale source blocks */ - if(v->rangeredfrm) { - int i, j; - uint8_t *src, *src2; - - src = srcY; - for(j = 0; j < 17 + s->mspel*2; j++) { - for(i = 0; i < 17 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128; - src += s->linesize; - } - src = srcU; src2 = srcV; - for(j = 0; j < 9; j++) { - for(i = 0; i < 9; i++) { - src[i] = ((src[i] - 128) >> 1) + 128; - src2[i] = ((src2[i] - 128) >> 1) + 128; - } - src += s->uvlinesize; - src2 += s->uvlinesize; - } - } - /* if we deal with intensity compensation we need to scale source blocks */ - if(v->mv_mode == MV_PMODE_INTENSITY_COMP) { - int i, j; - uint8_t *src, *src2; - - src = srcY; - for(j = 0; j < 17 + s->mspel*2; j++) { - for(i = 0; i < 17 + s->mspel*2; i++) src[i] = v->luty[src[i]]; - src += s->linesize; - } - src = srcU; src2 = srcV; - for(j = 0; j < 9; j++) { - for(i = 0; i < 9; i++) { - src[i] = v->lutuv[src[i]]; - src2[i] = v->lutuv[src2[i]]; - } - src += s->uvlinesize; - src2 += s->uvlinesize; - } - } - srcY += s->mspel * (1 + s->linesize); - } - - if(s->mspel) { - dxy = ((my & 3) << 2) | (mx & 3); - dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] , srcY , s->linesize, v->rnd); - dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8, srcY + 8, s->linesize, v->rnd); - srcY += s->linesize * 8; - dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize , srcY , s->linesize, v->rnd); - dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize + 8, srcY + 8, s->linesize, v->rnd); - } else { // hpel mc - always used for luma - dxy = (my & 2) | ((mx & 2) >> 1); - - if(!v->rnd) - dsp->put_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16); - else - dsp->put_no_rnd_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16); - } - - if(s->flags & CODEC_FLAG_GRAY) return; - /* Chroma MC always uses qpel bilinear */ - uvmx = (uvmx&3)<<1; - uvmy = (uvmy&3)<<1; - if(!v->rnd){ - dsp->put_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy); - dsp->put_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy); - }else{ - dsp->put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy); - dsp->put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy); - } -} - -/** Do motion compensation for 4-MV macroblock - luminance block - */ -static void vc1_mc_4mv_luma(VC1Context *v, int n) -{ - MpegEncContext *s = &v->s; - DSPContext *dsp = &v->s.dsp; - uint8_t *srcY; - int dxy, mx, my, src_x, src_y; - int off; - - if(!v->s.last_picture.data[0])return; - mx = s->mv[0][n][0]; - my = s->mv[0][n][1]; - srcY = s->last_picture.data[0]; - - off = s->linesize * 4 * (n&2) + (n&1) * 8; - - src_x = s->mb_x * 16 + (n&1) * 8 + (mx >> 2); - src_y = s->mb_y * 16 + (n&2) * 4 + (my >> 2); - - if(v->profile != PROFILE_ADVANCED){ - src_x = av_clip( src_x, -16, s->mb_width * 16); - src_y = av_clip( src_y, -16, s->mb_height * 16); - }else{ - src_x = av_clip( src_x, -17, s->avctx->coded_width); - src_y = av_clip( src_y, -18, s->avctx->coded_height + 1); - } - - srcY += src_y * s->linesize + src_x; - - if(v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP) - || (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx&3) - 8 - s->mspel*2 - || (unsigned)(src_y - s->mspel) > s->v_edge_pos - (my&3) - 8 - s->mspel*2){ - srcY -= s->mspel * (1 + s->linesize); - ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 9+s->mspel*2, 9+s->mspel*2, - src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos); - srcY = s->edge_emu_buffer; - /* if we deal with range reduction we need to scale source blocks */ - if(v->rangeredfrm) { - int i, j; - uint8_t *src; - - src = srcY; - for(j = 0; j < 9 + s->mspel*2; j++) { - for(i = 0; i < 9 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128; - src += s->linesize; - } - } - /* if we deal with intensity compensation we need to scale source blocks */ - if(v->mv_mode == MV_PMODE_INTENSITY_COMP) { - int i, j; - uint8_t *src; - - src = srcY; - for(j = 0; j < 9 + s->mspel*2; j++) { - for(i = 0; i < 9 + s->mspel*2; i++) src[i] = v->luty[src[i]]; - src += s->linesize; - } - } - srcY += s->mspel * (1 + s->linesize); - } - - if(s->mspel) { - dxy = ((my & 3) << 2) | (mx & 3); - dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + off, srcY, s->linesize, v->rnd); - } else { // hpel mc - always used for luma - dxy = (my & 2) | ((mx & 2) >> 1); - if(!v->rnd) - dsp->put_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize, 8); - else - dsp->put_no_rnd_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize, 8); - } -} - -static inline int median4(int a, int b, int c, int d) -{ - if(a < b) { - if(c < d) return (FFMIN(b, d) + FFMAX(a, c)) / 2; - else return (FFMIN(b, c) + FFMAX(a, d)) / 2; - } else { - if(c < d) return (FFMIN(a, d) + FFMAX(b, c)) / 2; - else return (FFMIN(a, c) + FFMAX(b, d)) / 2; - } -} - - -/** Do motion compensation for 4-MV macroblock - both chroma blocks - */ -static void vc1_mc_4mv_chroma(VC1Context *v) -{ - MpegEncContext *s = &v->s; - DSPContext *dsp = &v->s.dsp; - uint8_t *srcU, *srcV; - int uvmx, uvmy, uvsrc_x, uvsrc_y; - int i, idx, tx = 0, ty = 0; - int mvx[4], mvy[4], intra[4]; - static const int count[16] = { 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4}; - - if(!v->s.last_picture.data[0])return; - if(s->flags & CODEC_FLAG_GRAY) return; - - for(i = 0; i < 4; i++) { - mvx[i] = s->mv[0][i][0]; - mvy[i] = s->mv[0][i][1]; - intra[i] = v->mb_type[0][s->block_index[i]]; - } - - /* calculate chroma MV vector from four luma MVs */ - idx = (intra[3] << 3) | (intra[2] << 2) | (intra[1] << 1) | intra[0]; - if(!idx) { // all blocks are inter - tx = median4(mvx[0], mvx[1], mvx[2], mvx[3]); - ty = median4(mvy[0], mvy[1], mvy[2], mvy[3]); - } else if(count[idx] == 1) { // 3 inter blocks - switch(idx) { - case 0x1: - tx = mid_pred(mvx[1], mvx[2], mvx[3]); - ty = mid_pred(mvy[1], mvy[2], mvy[3]); - break; - case 0x2: - tx = mid_pred(mvx[0], mvx[2], mvx[3]); - ty = mid_pred(mvy[0], mvy[2], mvy[3]); - break; - case 0x4: - tx = mid_pred(mvx[0], mvx[1], mvx[3]); - ty = mid_pred(mvy[0], mvy[1], mvy[3]); - break; - case 0x8: - tx = mid_pred(mvx[0], mvx[1], mvx[2]); - ty = mid_pred(mvy[0], mvy[1], mvy[2]); - break; - } - } else if(count[idx] == 2) { - int t1 = 0, t2 = 0; - for(i=0; i<3;i++) if(!intra[i]) {t1 = i; break;} - for(i= t1+1; i<4; i++)if(!intra[i]) {t2 = i; break;} - tx = (mvx[t1] + mvx[t2]) / 2; - ty = (mvy[t1] + mvy[t2]) / 2; - } else { - s->current_picture.motion_val[1][s->block_index[0]][0] = 0; - s->current_picture.motion_val[1][s->block_index[0]][1] = 0; - return; //no need to do MC for inter blocks - } - - s->current_picture.motion_val[1][s->block_index[0]][0] = tx; - s->current_picture.motion_val[1][s->block_index[0]][1] = ty; - uvmx = (tx + ((tx&3) == 3)) >> 1; - uvmy = (ty + ((ty&3) == 3)) >> 1; - if(v->fastuvmc) { - uvmx = uvmx + ((uvmx<0)?(uvmx&1):-(uvmx&1)); - uvmy = uvmy + ((uvmy<0)?(uvmy&1):-(uvmy&1)); - } - - uvsrc_x = s->mb_x * 8 + (uvmx >> 2); - uvsrc_y = s->mb_y * 8 + (uvmy >> 2); - - if(v->profile != PROFILE_ADVANCED){ - uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8); - uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8); - }else{ - uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1); - uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1); - } - - srcU = s->last_picture.data[1] + uvsrc_y * s->uvlinesize + uvsrc_x; - srcV = s->last_picture.data[2] + uvsrc_y * s->uvlinesize + uvsrc_x; - if(v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP) - || (unsigned)uvsrc_x > (s->h_edge_pos >> 1) - 9 - || (unsigned)uvsrc_y > (s->v_edge_pos >> 1) - 9){ - ff_emulated_edge_mc(s->edge_emu_buffer , srcU, s->uvlinesize, 8+1, 8+1, - uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1); - ff_emulated_edge_mc(s->edge_emu_buffer + 16, srcV, s->uvlinesize, 8+1, 8+1, - uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1); - srcU = s->edge_emu_buffer; - srcV = s->edge_emu_buffer + 16; - - /* if we deal with range reduction we need to scale source blocks */ - if(v->rangeredfrm) { - int i, j; - uint8_t *src, *src2; - - src = srcU; src2 = srcV; - for(j = 0; j < 9; j++) { - for(i = 0; i < 9; i++) { - src[i] = ((src[i] - 128) >> 1) + 128; - src2[i] = ((src2[i] - 128) >> 1) + 128; - } - src += s->uvlinesize; - src2 += s->uvlinesize; - } - } - /* if we deal with intensity compensation we need to scale source blocks */ - if(v->mv_mode == MV_PMODE_INTENSITY_COMP) { - int i, j; - uint8_t *src, *src2; - - src = srcU; src2 = srcV; - for(j = 0; j < 9; j++) { - for(i = 0; i < 9; i++) { - src[i] = v->lutuv[src[i]]; - src2[i] = v->lutuv[src2[i]]; - } - src += s->uvlinesize; - src2 += s->uvlinesize; - } - } - } - - /* Chroma MC always uses qpel bilinear */ - uvmx = (uvmx&3)<<1; - uvmy = (uvmy&3)<<1; - if(!v->rnd){ - dsp->put_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy); - dsp->put_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy); - }else{ - dsp->put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy); - dsp->put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy); - } -} - static int decode_sequence_header_adv(VC1Context *v, GetBitContext *gb); /** @@ -1541,2788 +1023,3 @@ int vc1_parse_frame_header_adv(VC1Context *v, GetBitContext* gb) } return 0; } - -/***********************************************************************/ -/** - * @defgroup vc1block VC-1 Block-level functions - * @see 7.1.4, p91 and 8.1.1.7, p(1)04 - * @{ - */ - -/** - * @def GET_MQUANT - * @brief Get macroblock-level quantizer scale - */ -#define GET_MQUANT() \ - if (v->dquantfrm) \ - { \ - int edges = 0; \ - if (v->dqprofile == DQPROFILE_ALL_MBS) \ - { \ - if (v->dqbilevel) \ - { \ - mquant = (get_bits1(gb)) ? v->altpq : v->pq; \ - } \ - else \ - { \ - mqdiff = get_bits(gb, 3); \ - if (mqdiff != 7) mquant = v->pq + mqdiff; \ - else mquant = get_bits(gb, 5); \ - } \ - } \ - if(v->dqprofile == DQPROFILE_SINGLE_EDGE) \ - edges = 1 << v->dqsbedge; \ - else if(v->dqprofile == DQPROFILE_DOUBLE_EDGES) \ - edges = (3 << v->dqsbedge) % 15; \ - else if(v->dqprofile == DQPROFILE_FOUR_EDGES) \ - edges = 15; \ - if((edges&1) && !s->mb_x) \ - mquant = v->altpq; \ - if((edges&2) && s->first_slice_line) \ - mquant = v->altpq; \ - if((edges&4) && s->mb_x == (s->mb_width - 1)) \ - mquant = v->altpq; \ - if((edges&8) && s->mb_y == (s->mb_height - 1)) \ - mquant = v->altpq; \ - } - -/** - * @def GET_MVDATA(_dmv_x, _dmv_y) - * @brief Get MV differentials - * @see MVDATA decoding from 8.3.5.2, p(1)20 - * @param _dmv_x Horizontal differential for decoded MV - * @param _dmv_y Vertical differential for decoded MV - */ -#define GET_MVDATA(_dmv_x, _dmv_y) \ - index = 1 + get_vlc2(gb, ff_vc1_mv_diff_vlc[s->mv_table_index].table,\ - VC1_MV_DIFF_VLC_BITS, 2); \ - if (index > 36) \ - { \ - mb_has_coeffs = 1; \ - index -= 37; \ - } \ - else mb_has_coeffs = 0; \ - s->mb_intra = 0; \ - if (!index) { _dmv_x = _dmv_y = 0; } \ - else if (index == 35) \ - { \ - _dmv_x = get_bits(gb, v->k_x - 1 + s->quarter_sample); \ - _dmv_y = get_bits(gb, v->k_y - 1 + s->quarter_sample); \ - } \ - else if (index == 36) \ - { \ - _dmv_x = 0; \ - _dmv_y = 0; \ - s->mb_intra = 1; \ - } \ - else \ - { \ - index1 = index%6; \ - if (!s->quarter_sample && index1 == 5) val = 1; \ - else val = 0; \ - if(size_table[index1] - val > 0) \ - val = get_bits(gb, size_table[index1] - val); \ - else val = 0; \ - sign = 0 - (val&1); \ - _dmv_x = (sign ^ ((val>>1) + offset_table[index1])) - sign; \ - \ - index1 = index/6; \ - if (!s->quarter_sample && index1 == 5) val = 1; \ - else val = 0; \ - if(size_table[index1] - val > 0) \ - val = get_bits(gb, size_table[index1] - val); \ - else val = 0; \ - sign = 0 - (val&1); \ - _dmv_y = (sign ^ ((val>>1) + offset_table[index1])) - sign; \ - } - -/** Predict and set motion vector - */ -static inline void vc1_pred_mv(MpegEncContext *s, int n, int dmv_x, int dmv_y, int mv1, int r_x, int r_y, uint8_t* is_intra) -{ - int xy, wrap, off = 0; - int16_t *A, *B, *C; - int px, py; - int sum; - - /* scale MV difference to be quad-pel */ - dmv_x <<= 1 - s->quarter_sample; - dmv_y <<= 1 - s->quarter_sample; - - wrap = s->b8_stride; - xy = s->block_index[n]; - - if(s->mb_intra){ - s->mv[0][n][0] = s->current_picture.motion_val[0][xy][0] = 0; - s->mv[0][n][1] = s->current_picture.motion_val[0][xy][1] = 0; - s->current_picture.motion_val[1][xy][0] = 0; - s->current_picture.motion_val[1][xy][1] = 0; - if(mv1) { /* duplicate motion data for 1-MV block */ - s->current_picture.motion_val[0][xy + 1][0] = 0; - s->current_picture.motion_val[0][xy + 1][1] = 0; - s->current_picture.motion_val[0][xy + wrap][0] = 0; - s->current_picture.motion_val[0][xy + wrap][1] = 0; - s->current_picture.motion_val[0][xy + wrap + 1][0] = 0; - s->current_picture.motion_val[0][xy + wrap + 1][1] = 0; - s->current_picture.motion_val[1][xy + 1][0] = 0; - s->current_picture.motion_val[1][xy + 1][1] = 0; - s->current_picture.motion_val[1][xy + wrap][0] = 0; - s->current_picture.motion_val[1][xy + wrap][1] = 0; - s->current_picture.motion_val[1][xy + wrap + 1][0] = 0; - s->current_picture.motion_val[1][xy + wrap + 1][1] = 0; - } - return; - } - - C = s->current_picture.motion_val[0][xy - 1]; - A = s->current_picture.motion_val[0][xy - wrap]; - if(mv1) - off = (s->mb_x == (s->mb_width - 1)) ? -1 : 2; - else { - //in 4-MV mode different blocks have different B predictor position - switch(n){ - case 0: - off = (s->mb_x > 0) ? -1 : 1; - break; - case 1: - off = (s->mb_x == (s->mb_width - 1)) ? -1 : 1; - break; - case 2: - off = 1; - break; - case 3: - off = -1; - } - } - B = s->current_picture.motion_val[0][xy - wrap + off]; - - if(!s->first_slice_line || (n==2 || n==3)) { // predictor A is not out of bounds - if(s->mb_width == 1) { - px = A[0]; - py = A[1]; - } else { - px = mid_pred(A[0], B[0], C[0]); - py = mid_pred(A[1], B[1], C[1]); - } - } else if(s->mb_x || (n==1 || n==3)) { // predictor C is not out of bounds - px = C[0]; - py = C[1]; - } else { - px = py = 0; - } - /* Pullback MV as specified in 8.3.5.3.4 */ - { - int qx, qy, X, Y; - qx = (s->mb_x << 6) + ((n==1 || n==3) ? 32 : 0); - qy = (s->mb_y << 6) + ((n==2 || n==3) ? 32 : 0); - X = (s->mb_width << 6) - 4; - Y = (s->mb_height << 6) - 4; - if(mv1) { - if(qx + px < -60) px = -60 - qx; - if(qy + py < -60) py = -60 - qy; - } else { - if(qx + px < -28) px = -28 - qx; - if(qy + py < -28) py = -28 - qy; - } - if(qx + px > X) px = X - qx; - if(qy + py > Y) py = Y - qy; - } - /* Calculate hybrid prediction as specified in 8.3.5.3.5 */ - if((!s->first_slice_line || (n==2 || n==3)) && (s->mb_x || (n==1 || n==3))) { - if(is_intra[xy - wrap]) - sum = FFABS(px) + FFABS(py); - else - sum = FFABS(px - A[0]) + FFABS(py - A[1]); - if(sum > 32) { - if(get_bits1(&s->gb)) { - px = A[0]; - py = A[1]; - } else { - px = C[0]; - py = C[1]; - } - } else { - if(is_intra[xy - 1]) - sum = FFABS(px) + FFABS(py); - else - sum = FFABS(px - C[0]) + FFABS(py - C[1]); - if(sum > 32) { - if(get_bits1(&s->gb)) { - px = A[0]; - py = A[1]; - } else { - px = C[0]; - py = C[1]; - } - } - } - } - /* store MV using signed modulus of MV range defined in 4.11 */ - s->mv[0][n][0] = s->current_picture.motion_val[0][xy][0] = ((px + dmv_x + r_x) & ((r_x << 1) - 1)) - r_x; - s->mv[0][n][1] = s->current_picture.motion_val[0][xy][1] = ((py + dmv_y + r_y) & ((r_y << 1) - 1)) - r_y; - if(mv1) { /* duplicate motion data for 1-MV block */ - s->current_picture.motion_val[0][xy + 1][0] = s->current_picture.motion_val[0][xy][0]; - s->current_picture.motion_val[0][xy + 1][1] = s->current_picture.motion_val[0][xy][1]; - s->current_picture.motion_val[0][xy + wrap][0] = s->current_picture.motion_val[0][xy][0]; - s->current_picture.motion_val[0][xy + wrap][1] = s->current_picture.motion_val[0][xy][1]; - s->current_picture.motion_val[0][xy + wrap + 1][0] = s->current_picture.motion_val[0][xy][0]; - s->current_picture.motion_val[0][xy + wrap + 1][1] = s->current_picture.motion_val[0][xy][1]; - } -} - -/** Motion compensation for direct or interpolated blocks in B-frames - */ -static void vc1_interp_mc(VC1Context *v) -{ - MpegEncContext *s = &v->s; - DSPContext *dsp = &v->s.dsp; - uint8_t *srcY, *srcU, *srcV; - int dxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y; - - if(!v->s.next_picture.data[0])return; - - mx = s->mv[1][0][0]; - my = s->mv[1][0][1]; - uvmx = (mx + ((mx & 3) == 3)) >> 1; - uvmy = (my + ((my & 3) == 3)) >> 1; - if(v->fastuvmc) { - uvmx = uvmx + ((uvmx<0)?-(uvmx&1):(uvmx&1)); - uvmy = uvmy + ((uvmy<0)?-(uvmy&1):(uvmy&1)); - } - srcY = s->next_picture.data[0]; - srcU = s->next_picture.data[1]; - srcV = s->next_picture.data[2]; - - src_x = s->mb_x * 16 + (mx >> 2); - src_y = s->mb_y * 16 + (my >> 2); - uvsrc_x = s->mb_x * 8 + (uvmx >> 2); - uvsrc_y = s->mb_y * 8 + (uvmy >> 2); - - if(v->profile != PROFILE_ADVANCED){ - src_x = av_clip( src_x, -16, s->mb_width * 16); - src_y = av_clip( src_y, -16, s->mb_height * 16); - uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8); - uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8); - }else{ - src_x = av_clip( src_x, -17, s->avctx->coded_width); - src_y = av_clip( src_y, -18, s->avctx->coded_height + 1); - uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1); - uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1); - } - - srcY += src_y * s->linesize + src_x; - srcU += uvsrc_y * s->uvlinesize + uvsrc_x; - srcV += uvsrc_y * s->uvlinesize + uvsrc_x; - - /* for grayscale we should not try to read from unknown area */ - if(s->flags & CODEC_FLAG_GRAY) { - srcU = s->edge_emu_buffer + 18 * s->linesize; - srcV = s->edge_emu_buffer + 18 * s->linesize; - } - - if(v->rangeredfrm - || (unsigned)src_x > s->h_edge_pos - (mx&3) - 16 - s->mspel*3 - || (unsigned)src_y > s->v_edge_pos - (my&3) - 16 - s->mspel*3){ - uint8_t *uvbuf= s->edge_emu_buffer + 19 * s->linesize; - - srcY -= s->mspel * (1 + s->linesize); - ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 17+s->mspel*2, 17+s->mspel*2, - src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos); - srcY = s->edge_emu_buffer; - ff_emulated_edge_mc(uvbuf , srcU, s->uvlinesize, 8+1, 8+1, - uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1); - ff_emulated_edge_mc(uvbuf + 16, srcV, s->uvlinesize, 8+1, 8+1, - uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1); - srcU = uvbuf; - srcV = uvbuf + 16; - /* if we deal with range reduction we need to scale source blocks */ - if(v->rangeredfrm) { - int i, j; - uint8_t *src, *src2; - - src = srcY; - for(j = 0; j < 17 + s->mspel*2; j++) { - for(i = 0; i < 17 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128; - src += s->linesize; - } - src = srcU; src2 = srcV; - for(j = 0; j < 9; j++) { - for(i = 0; i < 9; i++) { - src[i] = ((src[i] - 128) >> 1) + 128; - src2[i] = ((src2[i] - 128) >> 1) + 128; - } - src += s->uvlinesize; - src2 += s->uvlinesize; - } - } - srcY += s->mspel * (1 + s->linesize); - } - - if(s->mspel) { - dxy = ((my & 3) << 2) | (mx & 3); - dsp->avg_vc1_mspel_pixels_tab[dxy](s->dest[0] , srcY , s->linesize, v->rnd); - dsp->avg_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8, srcY + 8, s->linesize, v->rnd); - srcY += s->linesize * 8; - dsp->avg_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize , srcY , s->linesize, v->rnd); - dsp->avg_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize + 8, srcY + 8, s->linesize, v->rnd); - } else { // hpel mc - dxy = (my & 2) | ((mx & 2) >> 1); - - if(!v->rnd) - dsp->avg_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16); - else - dsp->avg_no_rnd_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16); - } - - if(s->flags & CODEC_FLAG_GRAY) return; - /* Chroma MC always uses qpel blilinear */ - uvmx = (uvmx&3)<<1; - uvmy = (uvmy&3)<<1; - if(!v->rnd){ - dsp->avg_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy); - dsp->avg_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy); - }else{ - dsp->avg_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy); - dsp->avg_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy); - } -} - -static av_always_inline int scale_mv(int value, int bfrac, int inv, int qs) -{ - int n = bfrac; - -#if B_FRACTION_DEN==256 - if(inv) - n -= 256; - if(!qs) - return 2 * ((value * n + 255) >> 9); - return (value * n + 128) >> 8; -#else - if(inv) - n -= B_FRACTION_DEN; - if(!qs) - return 2 * ((value * n + B_FRACTION_DEN - 1) / (2 * B_FRACTION_DEN)); - return (value * n + B_FRACTION_DEN/2) / B_FRACTION_DEN; -#endif -} - -/** Reconstruct motion vector for B-frame and do motion compensation - */ -static inline void vc1_b_mc(VC1Context *v, int dmv_x[2], int dmv_y[2], int direct, int mode) -{ - if(v->use_ic) { - v->mv_mode2 = v->mv_mode; - v->mv_mode = MV_PMODE_INTENSITY_COMP; - } - if(direct) { - vc1_mc_1mv(v, 0); - vc1_interp_mc(v); - if(v->use_ic) v->mv_mode = v->mv_mode2; - return; - } - if(mode == BMV_TYPE_INTERPOLATED) { - vc1_mc_1mv(v, 0); - vc1_interp_mc(v); - if(v->use_ic) v->mv_mode = v->mv_mode2; - return; - } - - if(v->use_ic && (mode == BMV_TYPE_BACKWARD)) v->mv_mode = v->mv_mode2; - vc1_mc_1mv(v, (mode == BMV_TYPE_BACKWARD)); - if(v->use_ic) v->mv_mode = v->mv_mode2; -} - -static inline void vc1_pred_b_mv(VC1Context *v, int dmv_x[2], int dmv_y[2], int direct, int mvtype) -{ - MpegEncContext *s = &v->s; - int xy, wrap, off = 0; - int16_t *A, *B, *C; - int px, py; - int sum; - int r_x, r_y; - const uint8_t *is_intra = v->mb_type[0]; - - r_x = v->range_x; - r_y = v->range_y; - /* scale MV difference to be quad-pel */ - dmv_x[0] <<= 1 - s->quarter_sample; - dmv_y[0] <<= 1 - s->quarter_sample; - dmv_x[1] <<= 1 - s->quarter_sample; - dmv_y[1] <<= 1 - s->quarter_sample; - - wrap = s->b8_stride; - xy = s->block_index[0]; - - if(s->mb_intra) { - s->current_picture.motion_val[0][xy][0] = - s->current_picture.motion_val[0][xy][1] = - s->current_picture.motion_val[1][xy][0] = - s->current_picture.motion_val[1][xy][1] = 0; - return; - } - s->mv[0][0][0] = scale_mv(s->next_picture.motion_val[1][xy][0], v->bfraction, 0, s->quarter_sample); - s->mv[0][0][1] = scale_mv(s->next_picture.motion_val[1][xy][1], v->bfraction, 0, s->quarter_sample); - s->mv[1][0][0] = scale_mv(s->next_picture.motion_val[1][xy][0], v->bfraction, 1, s->quarter_sample); - s->mv[1][0][1] = scale_mv(s->next_picture.motion_val[1][xy][1], v->bfraction, 1, s->quarter_sample); - - /* Pullback predicted motion vectors as specified in 8.4.5.4 */ - s->mv[0][0][0] = av_clip(s->mv[0][0][0], -60 - (s->mb_x << 6), (s->mb_width << 6) - 4 - (s->mb_x << 6)); - s->mv[0][0][1] = av_clip(s->mv[0][0][1], -60 - (s->mb_y << 6), (s->mb_height << 6) - 4 - (s->mb_y << 6)); - s->mv[1][0][0] = av_clip(s->mv[1][0][0], -60 - (s->mb_x << 6), (s->mb_width << 6) - 4 - (s->mb_x << 6)); - s->mv[1][0][1] = av_clip(s->mv[1][0][1], -60 - (s->mb_y << 6), (s->mb_height << 6) - 4 - (s->mb_y << 6)); - if(direct) { - s->current_picture.motion_val[0][xy][0] = s->mv[0][0][0]; - s->current_picture.motion_val[0][xy][1] = s->mv[0][0][1]; - s->current_picture.motion_val[1][xy][0] = s->mv[1][0][0]; - s->current_picture.motion_val[1][xy][1] = s->mv[1][0][1]; - return; - } - - if((mvtype == BMV_TYPE_FORWARD) || (mvtype == BMV_TYPE_INTERPOLATED)) { - C = s->current_picture.motion_val[0][xy - 2]; - A = s->current_picture.motion_val[0][xy - wrap*2]; - off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2; - B = s->current_picture.motion_val[0][xy - wrap*2 + off]; - - if(!s->mb_x) C[0] = C[1] = 0; - if(!s->first_slice_line) { // predictor A is not out of bounds - if(s->mb_width == 1) { - px = A[0]; - py = A[1]; - } else { - px = mid_pred(A[0], B[0], C[0]); - py = mid_pred(A[1], B[1], C[1]); - } - } else if(s->mb_x) { // predictor C is not out of bounds - px = C[0]; - py = C[1]; - } else { - px = py = 0; - } - /* Pullback MV as specified in 8.3.5.3.4 */ - { - int qx, qy, X, Y; - if(v->profile < PROFILE_ADVANCED) { - qx = (s->mb_x << 5); - qy = (s->mb_y << 5); - X = (s->mb_width << 5) - 4; - Y = (s->mb_height << 5) - 4; - if(qx + px < -28) px = -28 - qx; - if(qy + py < -28) py = -28 - qy; - if(qx + px > X) px = X - qx; - if(qy + py > Y) py = Y - qy; - } else { - qx = (s->mb_x << 6); - qy = (s->mb_y << 6); - X = (s->mb_width << 6) - 4; - Y = (s->mb_height << 6) - 4; - if(qx + px < -60) px = -60 - qx; - if(qy + py < -60) py = -60 - qy; - if(qx + px > X) px = X - qx; - if(qy + py > Y) py = Y - qy; - } - } - /* Calculate hybrid prediction as specified in 8.3.5.3.5 */ - if(0 && !s->first_slice_line && s->mb_x) { - if(is_intra[xy - wrap]) - sum = FFABS(px) + FFABS(py); - else - sum = FFABS(px - A[0]) + FFABS(py - A[1]); - if(sum > 32) { - if(get_bits1(&s->gb)) { - px = A[0]; - py = A[1]; - } else { - px = C[0]; - py = C[1]; - } - } else { - if(is_intra[xy - 2]) - sum = FFABS(px) + FFABS(py); - else - sum = FFABS(px - C[0]) + FFABS(py - C[1]); - if(sum > 32) { - if(get_bits1(&s->gb)) { - px = A[0]; - py = A[1]; - } else { - px = C[0]; - py = C[1]; - } - } - } - } - /* store MV using signed modulus of MV range defined in 4.11 */ - s->mv[0][0][0] = ((px + dmv_x[0] + r_x) & ((r_x << 1) - 1)) - r_x; - s->mv[0][0][1] = ((py + dmv_y[0] + r_y) & ((r_y << 1) - 1)) - r_y; - } - if((mvtype == BMV_TYPE_BACKWARD) || (mvtype == BMV_TYPE_INTERPOLATED)) { - C = s->current_picture.motion_val[1][xy - 2]; - A = s->current_picture.motion_val[1][xy - wrap*2]; - off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2; - B = s->current_picture.motion_val[1][xy - wrap*2 + off]; - - if(!s->mb_x) C[0] = C[1] = 0; - if(!s->first_slice_line) { // predictor A is not out of bounds - if(s->mb_width == 1) { - px = A[0]; - py = A[1]; - } else { - px = mid_pred(A[0], B[0], C[0]); - py = mid_pred(A[1], B[1], C[1]); - } - } else if(s->mb_x) { // predictor C is not out of bounds - px = C[0]; - py = C[1]; - } else { - px = py = 0; - } - /* Pullback MV as specified in 8.3.5.3.4 */ - { - int qx, qy, X, Y; - if(v->profile < PROFILE_ADVANCED) { - qx = (s->mb_x << 5); - qy = (s->mb_y << 5); - X = (s->mb_width << 5) - 4; - Y = (s->mb_height << 5) - 4; - if(qx + px < -28) px = -28 - qx; - if(qy + py < -28) py = -28 - qy; - if(qx + px > X) px = X - qx; - if(qy + py > Y) py = Y - qy; - } else { - qx = (s->mb_x << 6); - qy = (s->mb_y << 6); - X = (s->mb_width << 6) - 4; - Y = (s->mb_height << 6) - 4; - if(qx + px < -60) px = -60 - qx; - if(qy + py < -60) py = -60 - qy; - if(qx + px > X) px = X - qx; - if(qy + py > Y) py = Y - qy; - } - } - /* Calculate hybrid prediction as specified in 8.3.5.3.5 */ - if(0 && !s->first_slice_line && s->mb_x) { - if(is_intra[xy - wrap]) - sum = FFABS(px) + FFABS(py); - else - sum = FFABS(px - A[0]) + FFABS(py - A[1]); - if(sum > 32) { - if(get_bits1(&s->gb)) { - px = A[0]; - py = A[1]; - } else { - px = C[0]; - py = C[1]; - } - } else { - if(is_intra[xy - 2]) - sum = FFABS(px) + FFABS(py); - else - sum = FFABS(px - C[0]) + FFABS(py - C[1]); - if(sum > 32) { - if(get_bits1(&s->gb)) { - px = A[0]; - py = A[1]; - } else { - px = C[0]; - py = C[1]; - } - } - } - } - /* store MV using signed modulus of MV range defined in 4.11 */ - - s->mv[1][0][0] = ((px + dmv_x[1] + r_x) & ((r_x << 1) - 1)) - r_x; - s->mv[1][0][1] = ((py + dmv_y[1] + r_y) & ((r_y << 1) - 1)) - r_y; - } - s->current_picture.motion_val[0][xy][0] = s->mv[0][0][0]; - s->current_picture.motion_val[0][xy][1] = s->mv[0][0][1]; - s->current_picture.motion_val[1][xy][0] = s->mv[1][0][0]; - s->current_picture.motion_val[1][xy][1] = s->mv[1][0][1]; -} - -/** Get predicted DC value for I-frames only - * prediction dir: left=0, top=1 - * @param s MpegEncContext - * @param overlap flag indicating that overlap filtering is used - * @param pq integer part of picture quantizer - * @param[in] n block index in the current MB - * @param dc_val_ptr Pointer to DC predictor - * @param dir_ptr Prediction direction for use in AC prediction - */ -static inline int vc1_i_pred_dc(MpegEncContext *s, int overlap, int pq, int n, - int16_t **dc_val_ptr, int *dir_ptr) -{ - int a, b, c, wrap, pred, scale; - int16_t *dc_val; - static const uint16_t dcpred[32] = { - -1, 1024, 512, 341, 256, 205, 171, 146, 128, - 114, 102, 93, 85, 79, 73, 68, 64, - 60, 57, 54, 51, 49, 47, 45, 43, - 41, 39, 38, 37, 35, 34, 33 - }; - - /* find prediction - wmv3_dc_scale always used here in fact */ - if (n < 4) scale = s->y_dc_scale; - else scale = s->c_dc_scale; - - wrap = s->block_wrap[n]; - dc_val= s->dc_val[0] + s->block_index[n]; - - /* B A - * C X - */ - c = dc_val[ - 1]; - b = dc_val[ - 1 - wrap]; - a = dc_val[ - wrap]; - - if (pq < 9 || !overlap) - { - /* Set outer values */ - if (s->first_slice_line && (n!=2 && n!=3)) b=a=dcpred[scale]; - if (s->mb_x == 0 && (n!=1 && n!=3)) b=c=dcpred[scale]; - } - else - { - /* Set outer values */ - if (s->first_slice_line && (n!=2 && n!=3)) b=a=0; - if (s->mb_x == 0 && (n!=1 && n!=3)) b=c=0; - } - - if (abs(a - b) <= abs(b - c)) { - pred = c; - *dir_ptr = 1;//left - } else { - pred = a; - *dir_ptr = 0;//top - } - - /* update predictor */ - *dc_val_ptr = &dc_val[0]; - return pred; -} - - -/** Get predicted DC value - * prediction dir: left=0, top=1 - * @param s MpegEncContext - * @param overlap flag indicating that overlap filtering is used - * @param pq integer part of picture quantizer - * @param[in] n block index in the current MB - * @param a_avail flag indicating top block availability - * @param c_avail flag indicating left block availability - * @param dc_val_ptr Pointer to DC predictor - * @param dir_ptr Prediction direction for use in AC prediction - */ -static inline int vc1_pred_dc(MpegEncContext *s, int overlap, int pq, int n, - int a_avail, int c_avail, - int16_t **dc_val_ptr, int *dir_ptr) -{ - int a, b, c, wrap, pred; - int16_t *dc_val; - int mb_pos = s->mb_x + s->mb_y * s->mb_stride; - int q1, q2 = 0; - - wrap = s->block_wrap[n]; - dc_val= s->dc_val[0] + s->block_index[n]; - - /* B A - * C X - */ - c = dc_val[ - 1]; - b = dc_val[ - 1 - wrap]; - a = dc_val[ - wrap]; - /* scale predictors if needed */ - q1 = s->current_picture.qscale_table[mb_pos]; - if(c_avail && (n!= 1 && n!=3)) { - q2 = s->current_picture.qscale_table[mb_pos - 1]; - if(q2 && q2 != q1) - c = (c * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18; - } - if(a_avail && (n!= 2 && n!=3)) { - q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride]; - if(q2 && q2 != q1) - a = (a * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18; - } - if(a_avail && c_avail && (n!=3)) { - int off = mb_pos; - if(n != 1) off--; - if(n != 2) off -= s->mb_stride; - q2 = s->current_picture.qscale_table[off]; - if(q2 && q2 != q1) - b = (b * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18; - } - - if(a_avail && c_avail) { - if(abs(a - b) <= abs(b - c)) { - pred = c; - *dir_ptr = 1;//left - } else { - pred = a; - *dir_ptr = 0;//top - } - } else if(a_avail) { - pred = a; - *dir_ptr = 0;//top - } else if(c_avail) { - pred = c; - *dir_ptr = 1;//left - } else { - pred = 0; - *dir_ptr = 1;//left - } - - /* update predictor */ - *dc_val_ptr = &dc_val[0]; - return pred; -} - -/** @} */ // Block group - -/** - * @defgroup vc1_std_mb VC1 Macroblock-level functions in Simple/Main Profiles - * @see 7.1.4, p91 and 8.1.1.7, p(1)04 - * @{ - */ - -static inline int vc1_coded_block_pred(MpegEncContext * s, int n, uint8_t **coded_block_ptr) -{ - int xy, wrap, pred, a, b, c; - - xy = s->block_index[n]; - wrap = s->b8_stride; - - /* B C - * A X - */ - a = s->coded_block[xy - 1 ]; - b = s->coded_block[xy - 1 - wrap]; - c = s->coded_block[xy - wrap]; - - if (b == c) { - pred = a; - } else { - pred = c; - } - - /* store value */ - *coded_block_ptr = &s->coded_block[xy]; - - return pred; -} - -/** - * Decode one AC coefficient - * @param v The VC1 context - * @param last Last coefficient - * @param skip How much zero coefficients to skip - * @param value Decoded AC coefficient value - * @param codingset set of VLC to decode data - * @see 8.1.3.4 - */ -static void vc1_decode_ac_coeff(VC1Context *v, int *last, int *skip, int *value, int codingset) -{ - GetBitContext *gb = &v->s.gb; - int index, escape, run = 0, level = 0, lst = 0; - - index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3); - if (index != vc1_ac_sizes[codingset] - 1) { - run = vc1_index_decode_table[codingset][index][0]; - level = vc1_index_decode_table[codingset][index][1]; - lst = index >= vc1_last_decode_table[codingset]; - if(get_bits1(gb)) - level = -level; - } else { - escape = decode210(gb); - if (escape != 2) { - index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3); - run = vc1_index_decode_table[codingset][index][0]; - level = vc1_index_decode_table[codingset][index][1]; - lst = index >= vc1_last_decode_table[codingset]; - if(escape == 0) { - if(lst) - level += vc1_last_delta_level_table[codingset][run]; - else - level += vc1_delta_level_table[codingset][run]; - } else { - if(lst) - run += vc1_last_delta_run_table[codingset][level] + 1; - else - run += vc1_delta_run_table[codingset][level] + 1; - } - if(get_bits1(gb)) - level = -level; - } else { - int sign; - lst = get_bits1(gb); - if(v->s.esc3_level_length == 0) { - if(v->pq < 8 || v->dquantfrm) { // table 59 - v->s.esc3_level_length = get_bits(gb, 3); - if(!v->s.esc3_level_length) - v->s.esc3_level_length = get_bits(gb, 2) + 8; - } else { //table 60 - v->s.esc3_level_length = get_unary(gb, 1, 6) + 2; - } - v->s.esc3_run_length = 3 + get_bits(gb, 2); - } - run = get_bits(gb, v->s.esc3_run_length); - sign = get_bits1(gb); - level = get_bits(gb, v->s.esc3_level_length); - if(sign) - level = -level; - } - } - - *last = lst; - *skip = run; - *value = level; -} - -/** Decode intra block in intra frames - should be faster than decode_intra_block - * @param v VC1Context - * @param block block to decode - * @param[in] n subblock index - * @param coded are AC coeffs present or not - * @param codingset set of VLC to decode data - */ -static int vc1_decode_i_block(VC1Context *v, DCTELEM block[64], int n, int coded, int codingset) -{ - GetBitContext *gb = &v->s.gb; - MpegEncContext *s = &v->s; - int dc_pred_dir = 0; /* Direction of the DC prediction used */ - int i; - int16_t *dc_val; - int16_t *ac_val, *ac_val2; - int dcdiff; - - /* Get DC differential */ - if (n < 4) { - dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3); - } else { - dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3); - } - if (dcdiff < 0){ - av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n"); - return -1; - } - if (dcdiff) - { - if (dcdiff == 119 /* ESC index value */) - { - /* TODO: Optimize */ - if (v->pq == 1) dcdiff = get_bits(gb, 10); - else if (v->pq == 2) dcdiff = get_bits(gb, 9); - else dcdiff = get_bits(gb, 8); - } - else - { - if (v->pq == 1) - dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3; - else if (v->pq == 2) - dcdiff = (dcdiff<<1) + get_bits1(gb) - 1; - } - if (get_bits1(gb)) - dcdiff = -dcdiff; - } - - /* Prediction */ - dcdiff += vc1_i_pred_dc(&v->s, v->overlap, v->pq, n, &dc_val, &dc_pred_dir); - *dc_val = dcdiff; - - /* Store the quantized DC coeff, used for prediction */ - if (n < 4) { - block[0] = dcdiff * s->y_dc_scale; - } else { - block[0] = dcdiff * s->c_dc_scale; - } - /* Skip ? */ - if (!coded) { - goto not_coded; - } - - //AC Decoding - i = 1; - - { - int last = 0, skip, value; - const int8_t *zz_table; - int scale; - int k; - - scale = v->pq * 2 + v->halfpq; - - if(v->s.ac_pred) { - if(!dc_pred_dir) - zz_table = wmv1_scantable[2]; - else - zz_table = wmv1_scantable[3]; - } else - zz_table = wmv1_scantable[1]; - - ac_val = s->ac_val[0][0] + s->block_index[n] * 16; - ac_val2 = ac_val; - if(dc_pred_dir) //left - ac_val -= 16; - else //top - ac_val -= 16 * s->block_wrap[n]; - - while (!last) { - vc1_decode_ac_coeff(v, &last, &skip, &value, codingset); - i += skip; - if(i > 63) - break; - block[zz_table[i++]] = value; - } - - /* apply AC prediction if needed */ - if(s->ac_pred) { - if(dc_pred_dir) { //left - for(k = 1; k < 8; k++) - block[k << 3] += ac_val[k]; - } else { //top - for(k = 1; k < 8; k++) - block[k] += ac_val[k + 8]; - } - } - /* save AC coeffs for further prediction */ - for(k = 1; k < 8; k++) { - ac_val2[k] = block[k << 3]; - ac_val2[k + 8] = block[k]; - } - - /* scale AC coeffs */ - for(k = 1; k < 64; k++) - if(block[k]) { - block[k] *= scale; - if(!v->pquantizer) - block[k] += (block[k] < 0) ? -v->pq : v->pq; - } - - if(s->ac_pred) i = 63; - } - -not_coded: - if(!coded) { - int k, scale; - ac_val = s->ac_val[0][0] + s->block_index[n] * 16; - ac_val2 = ac_val; - - i = 0; - scale = v->pq * 2 + v->halfpq; - memset(ac_val2, 0, 16 * 2); - if(dc_pred_dir) {//left - ac_val -= 16; - if(s->ac_pred) - memcpy(ac_val2, ac_val, 8 * 2); - } else {//top - ac_val -= 16 * s->block_wrap[n]; - if(s->ac_pred) - memcpy(ac_val2 + 8, ac_val + 8, 8 * 2); - } - - /* apply AC prediction if needed */ - if(s->ac_pred) { - if(dc_pred_dir) { //left - for(k = 1; k < 8; k++) { - block[k << 3] = ac_val[k] * scale; - if(!v->pquantizer && block[k << 3]) - block[k << 3] += (block[k << 3] < 0) ? -v->pq : v->pq; - } - } else { //top - for(k = 1; k < 8; k++) { - block[k] = ac_val[k + 8] * scale; - if(!v->pquantizer && block[k]) - block[k] += (block[k] < 0) ? -v->pq : v->pq; - } - } - i = 63; - } - } - s->block_last_index[n] = i; - - return 0; -} - -/** Decode intra block in intra frames - should be faster than decode_intra_block - * @param v VC1Context - * @param block block to decode - * @param[in] n subblock number - * @param coded are AC coeffs present or not - * @param codingset set of VLC to decode data - * @param mquant quantizer value for this macroblock - */ -static int vc1_decode_i_block_adv(VC1Context *v, DCTELEM block[64], int n, int coded, int codingset, int mquant) -{ - GetBitContext *gb = &v->s.gb; - MpegEncContext *s = &v->s; - int dc_pred_dir = 0; /* Direction of the DC prediction used */ - int i; - int16_t *dc_val; - int16_t *ac_val, *ac_val2; - int dcdiff; - int a_avail = v->a_avail, c_avail = v->c_avail; - int use_pred = s->ac_pred; - int scale; - int q1, q2 = 0; - int mb_pos = s->mb_x + s->mb_y * s->mb_stride; - - /* Get DC differential */ - if (n < 4) { - dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3); - } else { - dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3); - } - if (dcdiff < 0){ - av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n"); - return -1; - } - if (dcdiff) - { - if (dcdiff == 119 /* ESC index value */) - { - /* TODO: Optimize */ - if (mquant == 1) dcdiff = get_bits(gb, 10); - else if (mquant == 2) dcdiff = get_bits(gb, 9); - else dcdiff = get_bits(gb, 8); - } - else - { - if (mquant == 1) - dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3; - else if (mquant == 2) - dcdiff = (dcdiff<<1) + get_bits1(gb) - 1; - } - if (get_bits1(gb)) - dcdiff = -dcdiff; - } - - /* Prediction */ - dcdiff += vc1_pred_dc(&v->s, v->overlap, mquant, n, v->a_avail, v->c_avail, &dc_val, &dc_pred_dir); - *dc_val = dcdiff; - - /* Store the quantized DC coeff, used for prediction */ - if (n < 4) { - block[0] = dcdiff * s->y_dc_scale; - } else { - block[0] = dcdiff * s->c_dc_scale; - } - - //AC Decoding - i = 1; - - /* check if AC is needed at all */ - if(!a_avail && !c_avail) use_pred = 0; - ac_val = s->ac_val[0][0] + s->block_index[n] * 16; - ac_val2 = ac_val; - - scale = mquant * 2 + ((mquant == v->pq) ? v->halfpq : 0); - - if(dc_pred_dir) //left - ac_val -= 16; - else //top - ac_val -= 16 * s->block_wrap[n]; - - q1 = s->current_picture.qscale_table[mb_pos]; - if(dc_pred_dir && c_avail && mb_pos) q2 = s->current_picture.qscale_table[mb_pos - 1]; - if(!dc_pred_dir && a_avail && mb_pos >= s->mb_stride) q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride]; - if(dc_pred_dir && n==1) q2 = q1; - if(!dc_pred_dir && n==2) q2 = q1; - if(n==3) q2 = q1; - - if(coded) { - int last = 0, skip, value; - const int8_t *zz_table; - int k; - - if(v->s.ac_pred) { - if(!dc_pred_dir) - zz_table = wmv1_scantable[2]; - else - zz_table = wmv1_scantable[3]; - } else - zz_table = wmv1_scantable[1]; - - while (!last) { - vc1_decode_ac_coeff(v, &last, &skip, &value, codingset); - i += skip; - if(i > 63) - break; - block[zz_table[i++]] = value; - } - - /* apply AC prediction if needed */ - if(use_pred) { - /* scale predictors if needed*/ - if(q2 && q1!=q2) { - q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1; - q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1; - - if(dc_pred_dir) { //left - for(k = 1; k < 8; k++) - block[k << 3] += (ac_val[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18; - } else { //top - for(k = 1; k < 8; k++) - block[k] += (ac_val[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18; - } - } else { - if(dc_pred_dir) { //left - for(k = 1; k < 8; k++) - block[k << 3] += ac_val[k]; - } else { //top - for(k = 1; k < 8; k++) - block[k] += ac_val[k + 8]; - } - } - } - /* save AC coeffs for further prediction */ - for(k = 1; k < 8; k++) { - ac_val2[k] = block[k << 3]; - ac_val2[k + 8] = block[k]; - } - - /* scale AC coeffs */ - for(k = 1; k < 64; k++) - if(block[k]) { - block[k] *= scale; - if(!v->pquantizer) - block[k] += (block[k] < 0) ? -mquant : mquant; - } - - if(use_pred) i = 63; - } else { // no AC coeffs - int k; - - memset(ac_val2, 0, 16 * 2); - if(dc_pred_dir) {//left - if(use_pred) { - memcpy(ac_val2, ac_val, 8 * 2); - if(q2 && q1!=q2) { - q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1; - q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1; - for(k = 1; k < 8; k++) - ac_val2[k] = (ac_val2[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18; - } - } - } else {//top - if(use_pred) { - memcpy(ac_val2 + 8, ac_val + 8, 8 * 2); - if(q2 && q1!=q2) { - q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1; - q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1; - for(k = 1; k < 8; k++) - ac_val2[k + 8] = (ac_val2[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18; - } - } - } - - /* apply AC prediction if needed */ - if(use_pred) { - if(dc_pred_dir) { //left - for(k = 1; k < 8; k++) { - block[k << 3] = ac_val2[k] * scale; - if(!v->pquantizer && block[k << 3]) - block[k << 3] += (block[k << 3] < 0) ? -mquant : mquant; - } - } else { //top - for(k = 1; k < 8; k++) { - block[k] = ac_val2[k + 8] * scale; - if(!v->pquantizer && block[k]) - block[k] += (block[k] < 0) ? -mquant : mquant; - } - } - i = 63; - } - } - s->block_last_index[n] = i; - - return 0; -} - -/** Decode intra block in inter frames - more generic version than vc1_decode_i_block - * @param v VC1Context - * @param block block to decode - * @param[in] n subblock index - * @param coded are AC coeffs present or not - * @param mquant block quantizer - * @param codingset set of VLC to decode data - */ -static int vc1_decode_intra_block(VC1Context *v, DCTELEM block[64], int n, int coded, int mquant, int codingset) -{ - GetBitContext *gb = &v->s.gb; - MpegEncContext *s = &v->s; - int dc_pred_dir = 0; /* Direction of the DC prediction used */ - int i; - int16_t *dc_val; - int16_t *ac_val, *ac_val2; - int dcdiff; - int mb_pos = s->mb_x + s->mb_y * s->mb_stride; - int a_avail = v->a_avail, c_avail = v->c_avail; - int use_pred = s->ac_pred; - int scale; - int q1, q2 = 0; - - /* XXX: Guard against dumb values of mquant */ - mquant = (mquant < 1) ? 0 : ( (mquant>31) ? 31 : mquant ); - - /* Set DC scale - y and c use the same */ - s->y_dc_scale = s->y_dc_scale_table[mquant]; - s->c_dc_scale = s->c_dc_scale_table[mquant]; - - /* Get DC differential */ - if (n < 4) { - dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3); - } else { - dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3); - } - if (dcdiff < 0){ - av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n"); - return -1; - } - if (dcdiff) - { - if (dcdiff == 119 /* ESC index value */) - { - /* TODO: Optimize */ - if (mquant == 1) dcdiff = get_bits(gb, 10); - else if (mquant == 2) dcdiff = get_bits(gb, 9); - else dcdiff = get_bits(gb, 8); - } - else - { - if (mquant == 1) - dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3; - else if (mquant == 2) - dcdiff = (dcdiff<<1) + get_bits1(gb) - 1; - } - if (get_bits1(gb)) - dcdiff = -dcdiff; - } - - /* Prediction */ - dcdiff += vc1_pred_dc(&v->s, v->overlap, mquant, n, a_avail, c_avail, &dc_val, &dc_pred_dir); - *dc_val = dcdiff; - - /* Store the quantized DC coeff, used for prediction */ - - if (n < 4) { - block[0] = dcdiff * s->y_dc_scale; - } else { - block[0] = dcdiff * s->c_dc_scale; - } - - //AC Decoding - i = 1; - - /* check if AC is needed at all and adjust direction if needed */ - if(!a_avail) dc_pred_dir = 1; - if(!c_avail) dc_pred_dir = 0; - if(!a_avail && !c_avail) use_pred = 0; - ac_val = s->ac_val[0][0] + s->block_index[n] * 16; - ac_val2 = ac_val; - - scale = mquant * 2 + v->halfpq; - - if(dc_pred_dir) //left - ac_val -= 16; - else //top - ac_val -= 16 * s->block_wrap[n]; - - q1 = s->current_picture.qscale_table[mb_pos]; - if(dc_pred_dir && c_avail && mb_pos) q2 = s->current_picture.qscale_table[mb_pos - 1]; - if(!dc_pred_dir && a_avail && mb_pos >= s->mb_stride) q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride]; - if(dc_pred_dir && n==1) q2 = q1; - if(!dc_pred_dir && n==2) q2 = q1; - if(n==3) q2 = q1; - - if(coded) { - int last = 0, skip, value; - const int8_t *zz_table; - int k; - - zz_table = wmv1_scantable[0]; - - while (!last) { - vc1_decode_ac_coeff(v, &last, &skip, &value, codingset); - i += skip; - if(i > 63) - break; - block[zz_table[i++]] = value; - } - - /* apply AC prediction if needed */ - if(use_pred) { - /* scale predictors if needed*/ - if(q2 && q1!=q2) { - q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1; - q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1; - - if(dc_pred_dir) { //left - for(k = 1; k < 8; k++) - block[k << 3] += (ac_val[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18; - } else { //top - for(k = 1; k < 8; k++) - block[k] += (ac_val[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18; - } - } else { - if(dc_pred_dir) { //left - for(k = 1; k < 8; k++) - block[k << 3] += ac_val[k]; - } else { //top - for(k = 1; k < 8; k++) - block[k] += ac_val[k + 8]; - } - } - } - /* save AC coeffs for further prediction */ - for(k = 1; k < 8; k++) { - ac_val2[k] = block[k << 3]; - ac_val2[k + 8] = block[k]; - } - - /* scale AC coeffs */ - for(k = 1; k < 64; k++) - if(block[k]) { - block[k] *= scale; - if(!v->pquantizer) - block[k] += (block[k] < 0) ? -mquant : mquant; - } - - if(use_pred) i = 63; - } else { // no AC coeffs - int k; - - memset(ac_val2, 0, 16 * 2); - if(dc_pred_dir) {//left - if(use_pred) { - memcpy(ac_val2, ac_val, 8 * 2); - if(q2 && q1!=q2) { - q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1; - q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1; - for(k = 1; k < 8; k++) - ac_val2[k] = (ac_val2[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18; - } - } - } else {//top - if(use_pred) { - memcpy(ac_val2 + 8, ac_val + 8, 8 * 2); - if(q2 && q1!=q2) { - q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1; - q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1; - for(k = 1; k < 8; k++) - ac_val2[k + 8] = (ac_val2[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18; - } - } - } - - /* apply AC prediction if needed */ - if(use_pred) { - if(dc_pred_dir) { //left - for(k = 1; k < 8; k++) { - block[k << 3] = ac_val2[k] * scale; - if(!v->pquantizer && block[k << 3]) - block[k << 3] += (block[k << 3] < 0) ? -mquant : mquant; - } - } else { //top - for(k = 1; k < 8; k++) { - block[k] = ac_val2[k + 8] * scale; - if(!v->pquantizer && block[k]) - block[k] += (block[k] < 0) ? -mquant : mquant; - } - } - i = 63; - } - } - s->block_last_index[n] = i; - - return 0; -} - -/** Decode P block - */ -static int vc1_decode_p_block(VC1Context *v, DCTELEM block[64], int n, int mquant, int ttmb, int first_block, - uint8_t *dst, int linesize, int skip_block, int apply_filter, int cbp_top, int cbp_left) -{ - MpegEncContext *s = &v->s; - GetBitContext *gb = &s->gb; - int i, j; - int subblkpat = 0; - int scale, off, idx, last, skip, value; - int ttblk = ttmb & 7; - int pat = 0; - - if(ttmb == -1) { - ttblk = ff_vc1_ttblk_to_tt[v->tt_index][get_vlc2(gb, ff_vc1_ttblk_vlc[v->tt_index].table, VC1_TTBLK_VLC_BITS, 1)]; - } - if(ttblk == TT_4X4) { - subblkpat = ~(get_vlc2(gb, ff_vc1_subblkpat_vlc[v->tt_index].table, VC1_SUBBLKPAT_VLC_BITS, 1) + 1); - } - if((ttblk != TT_8X8 && ttblk != TT_4X4) && (v->ttmbf || (ttmb != -1 && (ttmb & 8) && !first_block))) { - subblkpat = decode012(gb); - if(subblkpat) subblkpat ^= 3; //swap decoded pattern bits - if(ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) ttblk = TT_8X4; - if(ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) ttblk = TT_4X8; - } - scale = 2 * mquant + ((v->pq == mquant) ? v->halfpq : 0); - - // convert transforms like 8X4_TOP to generic TT and SUBBLKPAT - if(ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) { - subblkpat = 2 - (ttblk == TT_8X4_TOP); - ttblk = TT_8X4; - } - if(ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) { - subblkpat = 2 - (ttblk == TT_4X8_LEFT); - ttblk = TT_4X8; - } - switch(ttblk) { - case TT_8X8: - pat = 0xF; - i = 0; - last = 0; - while (!last) { - vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2); - i += skip; - if(i > 63) - break; - idx = wmv1_scantable[0][i++]; - block[idx] = value * scale; - if(!v->pquantizer) - block[idx] += (block[idx] < 0) ? -mquant : mquant; - } - if(!skip_block){ - s->dsp.vc1_inv_trans_8x8(block); - s->dsp.add_pixels_clamped(block, dst, linesize); - if(apply_filter && cbp_top & 0xC) - s->dsp.vc1_v_loop_filter8(dst, linesize, v->pq); - if(apply_filter && cbp_left & 0xA) - s->dsp.vc1_h_loop_filter8(dst, linesize, v->pq); - } - break; - case TT_4X4: - pat = ~subblkpat & 0xF; - for(j = 0; j < 4; j++) { - last = subblkpat & (1 << (3 - j)); - i = 0; - off = (j & 1) * 4 + (j & 2) * 16; - while (!last) { - vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2); - i += skip; - if(i > 15) - break; - idx = ff_vc1_simple_progressive_4x4_zz[i++]; - block[idx + off] = value * scale; - if(!v->pquantizer) - block[idx + off] += (block[idx + off] < 0) ? -mquant : mquant; - } - if(!(subblkpat & (1 << (3 - j))) && !skip_block){ - s->dsp.vc1_inv_trans_4x4(dst + (j&1)*4 + (j&2)*2*linesize, linesize, block + off); - if(apply_filter && (j&2 ? pat & (1<<(j-2)) : (cbp_top & (1 << (j + 2))))) - s->dsp.vc1_v_loop_filter4(dst + (j&1)*4 + (j&2)*2*linesize, linesize, v->pq); - if(apply_filter && (j&1 ? pat & (1<<(j-1)) : (cbp_left & (1 << (j + 1))))) - s->dsp.vc1_h_loop_filter4(dst + (j&1)*4 + (j&2)*2*linesize, linesize, v->pq); - } - } - break; - case TT_8X4: - pat = ~((subblkpat & 2)*6 + (subblkpat & 1)*3) & 0xF; - for(j = 0; j < 2; j++) { - last = subblkpat & (1 << (1 - j)); - i = 0; - off = j * 32; - while (!last) { - vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2); - i += skip; - if(i > 31) - break; - idx = v->zz_8x4[i++]+off; - block[idx] = value * scale; - if(!v->pquantizer) - block[idx] += (block[idx] < 0) ? -mquant : mquant; - } - if(!(subblkpat & (1 << (1 - j))) && !skip_block){ - s->dsp.vc1_inv_trans_8x4(dst + j*4*linesize, linesize, block + off); - if(apply_filter && j ? pat & 0x3 : (cbp_top & 0xC)) - s->dsp.vc1_v_loop_filter8(dst + j*4*linesize, linesize, v->pq); - if(apply_filter && cbp_left & (2 << j)) - s->dsp.vc1_h_loop_filter4(dst + j*4*linesize, linesize, v->pq); - } - } - break; - case TT_4X8: - pat = ~(subblkpat*5) & 0xF; - for(j = 0; j < 2; j++) { - last = subblkpat & (1 << (1 - j)); - i = 0; - off = j * 4; - while (!last) { - vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2); - i += skip; - if(i > 31) - break; - idx = v->zz_4x8[i++]+off; - block[idx] = value * scale; - if(!v->pquantizer) - block[idx] += (block[idx] < 0) ? -mquant : mquant; - } - if(!(subblkpat & (1 << (1 - j))) && !skip_block){ - s->dsp.vc1_inv_trans_4x8(dst + j*4, linesize, block + off); - if(apply_filter && cbp_top & (2 << j)) - s->dsp.vc1_v_loop_filter4(dst + j*4, linesize, v->pq); - if(apply_filter && j ? pat & 0x5 : (cbp_left & 0xA)) - s->dsp.vc1_h_loop_filter8(dst + j*4, linesize, v->pq); - } - } - break; - } - return pat; -} - -/** @} */ // Macroblock group - -static const int size_table [6] = { 0, 2, 3, 4, 5, 8 }; -static const int offset_table[6] = { 0, 1, 3, 7, 15, 31 }; - -/** Decode one P-frame MB (in Simple/Main profile) - */ -static int vc1_decode_p_mb(VC1Context *v) -{ - MpegEncContext *s = &v->s; - GetBitContext *gb = &s->gb; - int i, j; - int mb_pos = s->mb_x + s->mb_y * s->mb_stride; - int cbp; /* cbp decoding stuff */ - int mqdiff, mquant; /* MB quantization */ - int ttmb = v->ttfrm; /* MB Transform type */ - - int mb_has_coeffs = 1; /* last_flag */ - int dmv_x, dmv_y; /* Differential MV components */ - int index, index1; /* LUT indexes */ - int val, sign; /* temp values */ - int first_block = 1; - int dst_idx, off; - int skipped, fourmv; - int block_cbp = 0, pat; - int apply_loop_filter; - - mquant = v->pq; /* Loosy initialization */ - - if (v->mv_type_is_raw) - fourmv = get_bits1(gb); - else - fourmv = v->mv_type_mb_plane[mb_pos]; - if (v->skip_is_raw) - skipped = get_bits1(gb); - else - skipped = v->s.mbskip_table[mb_pos]; - - s->dsp.clear_blocks(s->block[0]); - - apply_loop_filter = s->loop_filter && !(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY); - if (!fourmv) /* 1MV mode */ - { - if (!skipped) - { - GET_MVDATA(dmv_x, dmv_y); - - if (s->mb_intra) { - s->current_picture.motion_val[1][s->block_index[0]][0] = 0; - s->current_picture.motion_val[1][s->block_index[0]][1] = 0; - } - s->current_picture.mb_type[mb_pos] = s->mb_intra ? MB_TYPE_INTRA : MB_TYPE_16x16; - vc1_pred_mv(s, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0]); - - /* FIXME Set DC val for inter block ? */ - if (s->mb_intra && !mb_has_coeffs) - { - GET_MQUANT(); - s->ac_pred = get_bits1(gb); - cbp = 0; - } - else if (mb_has_coeffs) - { - if (s->mb_intra) s->ac_pred = get_bits1(gb); - cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2); - GET_MQUANT(); - } - else - { - mquant = v->pq; - cbp = 0; - } - s->current_picture.qscale_table[mb_pos] = mquant; - - if (!v->ttmbf && !s->mb_intra && mb_has_coeffs) - ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, - VC1_TTMB_VLC_BITS, 2); - if(!s->mb_intra) vc1_mc_1mv(v, 0); - dst_idx = 0; - for (i=0; i<6; i++) - { - s->dc_val[0][s->block_index[i]] = 0; - dst_idx += i >> 2; - val = ((cbp >> (5 - i)) & 1); - off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize); - v->mb_type[0][s->block_index[i]] = s->mb_intra; - if(s->mb_intra) { - /* check if prediction blocks A and C are available */ - v->a_avail = v->c_avail = 0; - if(i == 2 || i == 3 || !s->first_slice_line) - v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]]; - if(i == 1 || i == 3 || s->mb_x) - v->c_avail = v->mb_type[0][s->block_index[i] - 1]; - - vc1_decode_intra_block(v, s->block[i], i, val, mquant, (i&4)?v->codingset2:v->codingset); - if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue; - s->dsp.vc1_inv_trans_8x8(s->block[i]); - if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1; - s->dsp.put_signed_pixels_clamped(s->block[i], s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2)); - if(v->pq >= 9 && v->overlap) { - if(v->c_avail) - s->dsp.vc1_h_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2)); - if(v->a_avail) - s->dsp.vc1_v_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2)); - } - if(apply_loop_filter && s->mb_x && s->mb_x != (s->mb_width - 1) && s->mb_y && s->mb_y != (s->mb_height - 1)){ - int left_cbp, top_cbp; - if(i & 4){ - left_cbp = v->cbp[s->mb_x - 1] >> (i * 4); - top_cbp = v->cbp[s->mb_x - s->mb_stride] >> (i * 4); - }else{ - left_cbp = (i & 1) ? (cbp >> ((i-1)*4)) : (v->cbp[s->mb_x - 1] >> ((i+1)*4)); - top_cbp = (i & 2) ? (cbp >> ((i-2)*4)) : (v->cbp[s->mb_x - s->mb_stride] >> ((i+2)*4)); - } - if(left_cbp & 0xC) - s->dsp.vc1_v_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq); - if(top_cbp & 0xA) - s->dsp.vc1_h_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq); - } - block_cbp |= 0xF << (i << 2); - } else if(val) { - int left_cbp = 0, top_cbp = 0, filter = 0; - if(apply_loop_filter && s->mb_x && s->mb_x != (s->mb_width - 1) && s->mb_y && s->mb_y != (s->mb_height - 1)){ - filter = 1; - if(i & 4){ - left_cbp = v->cbp[s->mb_x - 1] >> (i * 4); - top_cbp = v->cbp[s->mb_x - s->mb_stride] >> (i * 4); - }else{ - left_cbp = (i & 1) ? (cbp >> ((i-1)*4)) : (v->cbp[s->mb_x - 1] >> ((i+1)*4)); - top_cbp = (i & 2) ? (cbp >> ((i-2)*4)) : (v->cbp[s->mb_x - s->mb_stride] >> ((i+2)*4)); - } - if(left_cbp & 0xC) - s->dsp.vc1_v_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq); - if(top_cbp & 0xA) - s->dsp.vc1_h_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq); - } - pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block, s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize, (i&4) && (s->flags & CODEC_FLAG_GRAY), filter, left_cbp, top_cbp); - block_cbp |= pat << (i << 2); - if(!v->ttmbf && ttmb < 8) ttmb = -1; - first_block = 0; - } - } - } - else //Skipped - { - s->mb_intra = 0; - for(i = 0; i < 6; i++) { - v->mb_type[0][s->block_index[i]] = 0; - s->dc_val[0][s->block_index[i]] = 0; - } - s->current_picture.mb_type[mb_pos] = MB_TYPE_SKIP; - s->current_picture.qscale_table[mb_pos] = 0; - vc1_pred_mv(s, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0]); - vc1_mc_1mv(v, 0); - return 0; - } - } //1MV mode - else //4MV mode - { - if (!skipped /* unskipped MB */) - { - int intra_count = 0, coded_inter = 0; - int is_intra[6], is_coded[6]; - /* Get CBPCY */ - cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2); - for (i=0; i<6; i++) - { - val = ((cbp >> (5 - i)) & 1); - s->dc_val[0][s->block_index[i]] = 0; - s->mb_intra = 0; - if(i < 4) { - dmv_x = dmv_y = 0; - s->mb_intra = 0; - mb_has_coeffs = 0; - if(val) { - GET_MVDATA(dmv_x, dmv_y); - } - vc1_pred_mv(s, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0]); - if(!s->mb_intra) vc1_mc_4mv_luma(v, i); - intra_count += s->mb_intra; - is_intra[i] = s->mb_intra; - is_coded[i] = mb_has_coeffs; - } - if(i&4){ - is_intra[i] = (intra_count >= 3); - is_coded[i] = val; - } - if(i == 4) vc1_mc_4mv_chroma(v); - v->mb_type[0][s->block_index[i]] = is_intra[i]; - if(!coded_inter) coded_inter = !is_intra[i] & is_coded[i]; - } - // if there are no coded blocks then don't do anything more - if(!intra_count && !coded_inter) return 0; - dst_idx = 0; - GET_MQUANT(); - s->current_picture.qscale_table[mb_pos] = mquant; - /* test if block is intra and has pred */ - { - int intrapred = 0; - for(i=0; i<6; i++) - if(is_intra[i]) { - if(((!s->first_slice_line || (i==2 || i==3)) && v->mb_type[0][s->block_index[i] - s->block_wrap[i]]) - || ((s->mb_x || (i==1 || i==3)) && v->mb_type[0][s->block_index[i] - 1])) { - intrapred = 1; - break; - } - } - if(intrapred)s->ac_pred = get_bits1(gb); - else s->ac_pred = 0; - } - if (!v->ttmbf && coded_inter) - ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2); - for (i=0; i<6; i++) - { - dst_idx += i >> 2; - off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize); - s->mb_intra = is_intra[i]; - if (is_intra[i]) { - /* check if prediction blocks A and C are available */ - v->a_avail = v->c_avail = 0; - if(i == 2 || i == 3 || !s->first_slice_line) - v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]]; - if(i == 1 || i == 3 || s->mb_x) - v->c_avail = v->mb_type[0][s->block_index[i] - 1]; - - vc1_decode_intra_block(v, s->block[i], i, is_coded[i], mquant, (i&4)?v->codingset2:v->codingset); - if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue; - s->dsp.vc1_inv_trans_8x8(s->block[i]); - if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1; - s->dsp.put_signed_pixels_clamped(s->block[i], s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize); - if(v->pq >= 9 && v->overlap) { - if(v->c_avail) - s->dsp.vc1_h_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2)); - if(v->a_avail) - s->dsp.vc1_v_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2)); - } - if(v->s.loop_filter && s->mb_x && s->mb_x != (s->mb_width - 1) && s->mb_y && s->mb_y != (s->mb_height - 1)){ - int left_cbp, top_cbp; - if(i & 4){ - left_cbp = v->cbp[s->mb_x - 1] >> (i * 4); - top_cbp = v->cbp[s->mb_x - s->mb_stride] >> (i * 4); - }else{ - left_cbp = (i & 1) ? (cbp >> ((i-1)*4)) : (v->cbp[s->mb_x - 1] >> ((i+1)*4)); - top_cbp = (i & 2) ? (cbp >> ((i-2)*4)) : (v->cbp[s->mb_x - s->mb_stride] >> ((i+2)*4)); - } - if(left_cbp & 0xC) - s->dsp.vc1_v_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq); - if(top_cbp & 0xA) - s->dsp.vc1_h_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq); - } - block_cbp |= 0xF << (i << 2); - } else if(is_coded[i]) { - int left_cbp = 0, top_cbp = 0, filter = 0; - if(v->s.loop_filter && s->mb_x && s->mb_x != (s->mb_width - 1) && s->mb_y && s->mb_y != (s->mb_height - 1)){ - filter = 1; - if(i & 4){ - left_cbp = v->cbp[s->mb_x - 1] >> (i * 4); - top_cbp = v->cbp[s->mb_x - s->mb_stride] >> (i * 4); - }else{ - left_cbp = (i & 1) ? (cbp >> ((i-1)*4)) : (v->cbp[s->mb_x - 1] >> ((i+1)*4)); - top_cbp = (i & 2) ? (cbp >> ((i-2)*4)) : (v->cbp[s->mb_x - s->mb_stride] >> ((i+2)*4)); - } - if(left_cbp & 0xC) - s->dsp.vc1_v_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq); - if(top_cbp & 0xA) - s->dsp.vc1_h_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq); - } - pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block, s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize, (i&4) && (s->flags & CODEC_FLAG_GRAY), filter, left_cbp, top_cbp); - block_cbp |= pat << (i << 2); - if(!v->ttmbf && ttmb < 8) ttmb = -1; - first_block = 0; - } - } - return 0; - } - else //Skipped MB - { - s->mb_intra = 0; - s->current_picture.qscale_table[mb_pos] = 0; - for (i=0; i<6; i++) { - v->mb_type[0][s->block_index[i]] = 0; - s->dc_val[0][s->block_index[i]] = 0; - } - for (i=0; i<4; i++) - { - vc1_pred_mv(s, i, 0, 0, 0, v->range_x, v->range_y, v->mb_type[0]); - vc1_mc_4mv_luma(v, i); - } - vc1_mc_4mv_chroma(v); - s->current_picture.qscale_table[mb_pos] = 0; - return 0; - } - } - v->cbp[s->mb_x] = block_cbp; - - /* Should never happen */ - return -1; -} - -/** Decode one B-frame MB (in Main profile) - */ -static void vc1_decode_b_mb(VC1Context *v) -{ - MpegEncContext *s = &v->s; - GetBitContext *gb = &s->gb; - int i, j; - int mb_pos = s->mb_x + s->mb_y * s->mb_stride; - int cbp = 0; /* cbp decoding stuff */ - int mqdiff, mquant; /* MB quantization */ - int ttmb = v->ttfrm; /* MB Transform type */ - int mb_has_coeffs = 0; /* last_flag */ - int index, index1; /* LUT indexes */ - int val, sign; /* temp values */ - int first_block = 1; - int dst_idx, off; - int skipped, direct; - int dmv_x[2], dmv_y[2]; - int bmvtype = BMV_TYPE_BACKWARD; - - mquant = v->pq; /* Loosy initialization */ - s->mb_intra = 0; - - if (v->dmb_is_raw) - direct = get_bits1(gb); - else - direct = v->direct_mb_plane[mb_pos]; - if (v->skip_is_raw) - skipped = get_bits1(gb); - else - skipped = v->s.mbskip_table[mb_pos]; - - s->dsp.clear_blocks(s->block[0]); - dmv_x[0] = dmv_x[1] = dmv_y[0] = dmv_y[1] = 0; - for(i = 0; i < 6; i++) { - v->mb_type[0][s->block_index[i]] = 0; - s->dc_val[0][s->block_index[i]] = 0; - } - s->current_picture.qscale_table[mb_pos] = 0; - - if (!direct) { - if (!skipped) { - GET_MVDATA(dmv_x[0], dmv_y[0]); - dmv_x[1] = dmv_x[0]; - dmv_y[1] = dmv_y[0]; - } - if(skipped || !s->mb_intra) { - bmvtype = decode012(gb); - switch(bmvtype) { - case 0: - bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_BACKWARD : BMV_TYPE_FORWARD; - break; - case 1: - bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_FORWARD : BMV_TYPE_BACKWARD; - break; - case 2: - bmvtype = BMV_TYPE_INTERPOLATED; - dmv_x[0] = dmv_y[0] = 0; - } - } - } - for(i = 0; i < 6; i++) - v->mb_type[0][s->block_index[i]] = s->mb_intra; - - if (skipped) { - if(direct) bmvtype = BMV_TYPE_INTERPOLATED; - vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype); - vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype); - return; - } - if (direct) { - cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2); - GET_MQUANT(); - s->mb_intra = 0; - s->current_picture.qscale_table[mb_pos] = mquant; - if(!v->ttmbf) - ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2); - dmv_x[0] = dmv_y[0] = dmv_x[1] = dmv_y[1] = 0; - vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype); - vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype); - } else { - if(!mb_has_coeffs && !s->mb_intra) { - /* no coded blocks - effectively skipped */ - vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype); - vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype); - return; - } - if(s->mb_intra && !mb_has_coeffs) { - GET_MQUANT(); - s->current_picture.qscale_table[mb_pos] = mquant; - s->ac_pred = get_bits1(gb); - cbp = 0; - vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype); - } else { - if(bmvtype == BMV_TYPE_INTERPOLATED) { - GET_MVDATA(dmv_x[0], dmv_y[0]); - if(!mb_has_coeffs) { - /* interpolated skipped block */ - vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype); - vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype); - return; - } - } - vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype); - if(!s->mb_intra) { - vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype); - } - if(s->mb_intra) - s->ac_pred = get_bits1(gb); - cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2); - GET_MQUANT(); - s->current_picture.qscale_table[mb_pos] = mquant; - if(!v->ttmbf && !s->mb_intra && mb_has_coeffs) - ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2); - } - } - dst_idx = 0; - for (i=0; i<6; i++) - { - s->dc_val[0][s->block_index[i]] = 0; - dst_idx += i >> 2; - val = ((cbp >> (5 - i)) & 1); - off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize); - v->mb_type[0][s->block_index[i]] = s->mb_intra; - if(s->mb_intra) { - /* check if prediction blocks A and C are available */ - v->a_avail = v->c_avail = 0; - if(i == 2 || i == 3 || !s->first_slice_line) - v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]]; - if(i == 1 || i == 3 || s->mb_x) - v->c_avail = v->mb_type[0][s->block_index[i] - 1]; - - vc1_decode_intra_block(v, s->block[i], i, val, mquant, (i&4)?v->codingset2:v->codingset); - if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue; - s->dsp.vc1_inv_trans_8x8(s->block[i]); - if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1; - s->dsp.put_signed_pixels_clamped(s->block[i], s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2)); - } else if(val) { - vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block, s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize, (i&4) && (s->flags & CODEC_FLAG_GRAY), 0, 0, 0); - if(!v->ttmbf && ttmb < 8) ttmb = -1; - first_block = 0; - } - } -} - -/** Decode blocks of I-frame - */ -static void vc1_decode_i_blocks(VC1Context *v) -{ - int k, j; - MpegEncContext *s = &v->s; - int cbp, val; - uint8_t *coded_val; - int mb_pos; - - /* select codingmode used for VLC tables selection */ - switch(v->y_ac_table_index){ - case 0: - v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA; - break; - case 1: - v->codingset = CS_HIGH_MOT_INTRA; - break; - case 2: - v->codingset = CS_MID_RATE_INTRA; - break; - } - - switch(v->c_ac_table_index){ - case 0: - v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER; - break; - case 1: - v->codingset2 = CS_HIGH_MOT_INTER; - break; - case 2: - v->codingset2 = CS_MID_RATE_INTER; - break; - } - - /* Set DC scale - y and c use the same */ - s->y_dc_scale = s->y_dc_scale_table[v->pq]; - s->c_dc_scale = s->c_dc_scale_table[v->pq]; - - //do frame decode - s->mb_x = s->mb_y = 0; - s->mb_intra = 1; - s->first_slice_line = 1; - for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) { - for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) { - ff_init_block_index(s); - ff_update_block_index(s); - s->dsp.clear_blocks(s->block[0]); - mb_pos = s->mb_x + s->mb_y * s->mb_width; - s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA; - s->current_picture.qscale_table[mb_pos] = v->pq; - s->current_picture.motion_val[1][s->block_index[0]][0] = 0; - s->current_picture.motion_val[1][s->block_index[0]][1] = 0; - - // do actual MB decoding and displaying - cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2); - v->s.ac_pred = get_bits1(&v->s.gb); - - for(k = 0; k < 6; k++) { - val = ((cbp >> (5 - k)) & 1); - - if (k < 4) { - int pred = vc1_coded_block_pred(&v->s, k, &coded_val); - val = val ^ pred; - *coded_val = val; - } - cbp |= val << (5 - k); - - vc1_decode_i_block(v, s->block[k], k, val, (k<4)? v->codingset : v->codingset2); - - s->dsp.vc1_inv_trans_8x8(s->block[k]); - if(v->pq >= 9 && v->overlap) { - for(j = 0; j < 64; j++) s->block[k][j] += 128; - } - } - - vc1_put_block(v, s->block); - if(v->pq >= 9 && v->overlap) { - if(s->mb_x) { - s->dsp.vc1_h_overlap(s->dest[0], s->linesize); - s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize); - if(!(s->flags & CODEC_FLAG_GRAY)) { - s->dsp.vc1_h_overlap(s->dest[1], s->uvlinesize); - s->dsp.vc1_h_overlap(s->dest[2], s->uvlinesize); - } - } - s->dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize); - s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize); - if(!s->first_slice_line) { - s->dsp.vc1_v_overlap(s->dest[0], s->linesize); - s->dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize); - if(!(s->flags & CODEC_FLAG_GRAY)) { - s->dsp.vc1_v_overlap(s->dest[1], s->uvlinesize); - s->dsp.vc1_v_overlap(s->dest[2], s->uvlinesize); - } - } - s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize); - s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize); - } - if(v->s.loop_filter) vc1_loop_filter_iblk(s, v->pq); - - if(get_bits_count(&s->gb) > v->bits) { - ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END)); - av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n", get_bits_count(&s->gb), v->bits); - return; - } - } - ff_draw_horiz_band(s, s->mb_y * 16, 16); - s->first_slice_line = 0; - } - ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END)); -} - -/** Decode blocks of I-frame for advanced profile - */ -static void vc1_decode_i_blocks_adv(VC1Context *v) -{ - int k, j; - MpegEncContext *s = &v->s; - int cbp, val; - uint8_t *coded_val; - int mb_pos; - int mquant = v->pq; - int mqdiff; - int overlap; - GetBitContext *gb = &s->gb; - - /* select codingmode used for VLC tables selection */ - switch(v->y_ac_table_index){ - case 0: - v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA; - break; - case 1: - v->codingset = CS_HIGH_MOT_INTRA; - break; - case 2: - v->codingset = CS_MID_RATE_INTRA; - break; - } - - switch(v->c_ac_table_index){ - case 0: - v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER; - break; - case 1: - v->codingset2 = CS_HIGH_MOT_INTER; - break; - case 2: - v->codingset2 = CS_MID_RATE_INTER; - break; - } - - //do frame decode - s->mb_x = s->mb_y = 0; - s->mb_intra = 1; - s->first_slice_line = 1; - for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) { - for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) { - ff_init_block_index(s); - ff_update_block_index(s); - s->dsp.clear_blocks(s->block[0]); - mb_pos = s->mb_x + s->mb_y * s->mb_stride; - s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA; - s->current_picture.motion_val[1][s->block_index[0]][0] = 0; - s->current_picture.motion_val[1][s->block_index[0]][1] = 0; - - // do actual MB decoding and displaying - cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2); - if(v->acpred_is_raw) - v->s.ac_pred = get_bits1(&v->s.gb); - else - v->s.ac_pred = v->acpred_plane[mb_pos]; - - if(v->condover == CONDOVER_SELECT) { - if(v->overflg_is_raw) - overlap = get_bits1(&v->s.gb); - else - overlap = v->over_flags_plane[mb_pos]; - } else - overlap = (v->condover == CONDOVER_ALL); - - GET_MQUANT(); - - s->current_picture.qscale_table[mb_pos] = mquant; - /* Set DC scale - y and c use the same */ - s->y_dc_scale = s->y_dc_scale_table[mquant]; - s->c_dc_scale = s->c_dc_scale_table[mquant]; - - for(k = 0; k < 6; k++) { - val = ((cbp >> (5 - k)) & 1); - - if (k < 4) { - int pred = vc1_coded_block_pred(&v->s, k, &coded_val); - val = val ^ pred; - *coded_val = val; - } - cbp |= val << (5 - k); - - v->a_avail = !s->first_slice_line || (k==2 || k==3); - v->c_avail = !!s->mb_x || (k==1 || k==3); - - vc1_decode_i_block_adv(v, s->block[k], k, val, (k<4)? v->codingset : v->codingset2, mquant); - - s->dsp.vc1_inv_trans_8x8(s->block[k]); - for(j = 0; j < 64; j++) s->block[k][j] += 128; - } - - vc1_put_block(v, s->block); - if(overlap) { - if(s->mb_x) { - s->dsp.vc1_h_overlap(s->dest[0], s->linesize); - s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize); - if(!(s->flags & CODEC_FLAG_GRAY)) { - s->dsp.vc1_h_overlap(s->dest[1], s->uvlinesize); - s->dsp.vc1_h_overlap(s->dest[2], s->uvlinesize); - } - } - s->dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize); - s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize); - if(!s->first_slice_line) { - s->dsp.vc1_v_overlap(s->dest[0], s->linesize); - s->dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize); - if(!(s->flags & CODEC_FLAG_GRAY)) { - s->dsp.vc1_v_overlap(s->dest[1], s->uvlinesize); - s->dsp.vc1_v_overlap(s->dest[2], s->uvlinesize); - } - } - s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize); - s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize); - } - if(v->s.loop_filter) vc1_loop_filter_iblk(s, v->pq); - - if(get_bits_count(&s->gb) > v->bits) { - ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END)); - av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n", get_bits_count(&s->gb), v->bits); - return; - } - } - ff_draw_horiz_band(s, s->mb_y * 16, 16); - s->first_slice_line = 0; - } - ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END)); -} - -static void vc1_decode_p_blocks(VC1Context *v) -{ - MpegEncContext *s = &v->s; - - /* select codingmode used for VLC tables selection */ - switch(v->c_ac_table_index){ - case 0: - v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA; - break; - case 1: - v->codingset = CS_HIGH_MOT_INTRA; - break; - case 2: - v->codingset = CS_MID_RATE_INTRA; - break; - } - - switch(v->c_ac_table_index){ - case 0: - v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER; - break; - case 1: - v->codingset2 = CS_HIGH_MOT_INTER; - break; - case 2: - v->codingset2 = CS_MID_RATE_INTER; - break; - } - - s->first_slice_line = 1; - memset(v->cbp_base, 0, sizeof(v->cbp_base[0])*2*s->mb_stride); - for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) { - for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) { - ff_init_block_index(s); - ff_update_block_index(s); - s->dsp.clear_blocks(s->block[0]); - - vc1_decode_p_mb(v); - if(get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) { - ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END)); - av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i at %ix%i\n", get_bits_count(&s->gb), v->bits,s->mb_x,s->mb_y); - return; - } - } - memmove(v->cbp_base, v->cbp, sizeof(v->cbp_base[0])*s->mb_stride); - ff_draw_horiz_band(s, s->mb_y * 16, 16); - s->first_slice_line = 0; - } - ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END)); -} - -static void vc1_decode_b_blocks(VC1Context *v) -{ - MpegEncContext *s = &v->s; - - /* select codingmode used for VLC tables selection */ - switch(v->c_ac_table_index){ - case 0: - v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA; - break; - case 1: - v->codingset = CS_HIGH_MOT_INTRA; - break; - case 2: - v->codingset = CS_MID_RATE_INTRA; - break; - } - - switch(v->c_ac_table_index){ - case 0: - v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER; - break; - case 1: - v->codingset2 = CS_HIGH_MOT_INTER; - break; - case 2: - v->codingset2 = CS_MID_RATE_INTER; - break; - } - - s->first_slice_line = 1; - for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) { - for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) { - ff_init_block_index(s); - ff_update_block_index(s); - s->dsp.clear_blocks(s->block[0]); - - vc1_decode_b_mb(v); - if(get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) { - ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END)); - av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i at %ix%i\n", get_bits_count(&s->gb), v->bits,s->mb_x,s->mb_y); - return; - } - if(v->s.loop_filter) vc1_loop_filter_iblk(s, v->pq); - } - ff_draw_horiz_band(s, s->mb_y * 16, 16); - s->first_slice_line = 0; - } - ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END)); -} - -static void vc1_decode_skip_blocks(VC1Context *v) -{ - MpegEncContext *s = &v->s; - - ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END)); - s->first_slice_line = 1; - for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) { - s->mb_x = 0; - ff_init_block_index(s); - ff_update_block_index(s); - memcpy(s->dest[0], s->last_picture.data[0] + s->mb_y * 16 * s->linesize, s->linesize * 16); - memcpy(s->dest[1], s->last_picture.data[1] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8); - memcpy(s->dest[2], s->last_picture.data[2] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8); - ff_draw_horiz_band(s, s->mb_y * 16, 16); - s->first_slice_line = 0; - } - s->pict_type = FF_P_TYPE; -} - -static void vc1_decode_blocks(VC1Context *v) -{ - - v->s.esc3_level_length = 0; - if(v->x8_type){ - ff_intrax8_decode_picture(&v->x8, 2*v->pq+v->halfpq, v->pq*(!v->pquantizer) ); - }else{ - - switch(v->s.pict_type) { - case FF_I_TYPE: - if(v->profile == PROFILE_ADVANCED) - vc1_decode_i_blocks_adv(v); - else - vc1_decode_i_blocks(v); - break; - case FF_P_TYPE: - if(v->p_frame_skipped) - vc1_decode_skip_blocks(v); - else - vc1_decode_p_blocks(v); - break; - case FF_B_TYPE: - if(v->bi_type){ - if(v->profile == PROFILE_ADVANCED) - vc1_decode_i_blocks_adv(v); - else - vc1_decode_i_blocks(v); - }else - vc1_decode_b_blocks(v); - break; - } - } -} - -/** Initialize a VC1/WMV3 decoder - * @todo TODO: Handle VC-1 IDUs (Transport level?) - * @todo TODO: Decypher remaining bits in extra_data - */ -static av_cold int vc1_decode_init(AVCodecContext *avctx) -{ - VC1Context *v = avctx->priv_data; - MpegEncContext *s = &v->s; - GetBitContext gb; - - if (!avctx->extradata_size || !avctx->extradata) return -1; - if (!(avctx->flags & CODEC_FLAG_GRAY)) - avctx->pix_fmt = avctx->get_format(avctx, avctx->codec->pix_fmts); - else - avctx->pix_fmt = PIX_FMT_GRAY8; - avctx->hwaccel = ff_find_hwaccel(avctx->codec->id, avctx->pix_fmt); - v->s.avctx = avctx; - avctx->flags |= CODEC_FLAG_EMU_EDGE; - v->s.flags |= CODEC_FLAG_EMU_EDGE; - - if(avctx->idct_algo==FF_IDCT_AUTO){ - avctx->idct_algo=FF_IDCT_WMV2; - } - - if(ff_h263_decode_init(avctx) < 0) - return -1; - if (vc1_init_common(v) < 0) return -1; - - avctx->coded_width = avctx->width; - avctx->coded_height = avctx->height; - if (avctx->codec_id == CODEC_ID_WMV3) - { - int count = 0; - - // looks like WMV3 has a sequence header stored in the extradata - // advanced sequence header may be before the first frame - // the last byte of the extradata is a version number, 1 for the - // samples we can decode - - init_get_bits(&gb, avctx->extradata, avctx->extradata_size*8); - - if (vc1_decode_sequence_header(avctx, v, &gb) < 0) - return -1; - - count = avctx->extradata_size*8 - get_bits_count(&gb); - if (count>0) - { - av_log(avctx, AV_LOG_INFO, "Extra data: %i bits left, value: %X\n", - count, get_bits(&gb, count)); - } - else if (count < 0) - { - av_log(avctx, AV_LOG_INFO, "Read %i bits in overflow\n", -count); - } - } else { // VC1/WVC1 - const uint8_t *start = avctx->extradata; - uint8_t *end = avctx->extradata + avctx->extradata_size; - const uint8_t *next; - int size, buf2_size; - uint8_t *buf2 = NULL; - int seq_initialized = 0, ep_initialized = 0; - - if(avctx->extradata_size < 16) { - av_log(avctx, AV_LOG_ERROR, "Extradata size too small: %i\n", avctx->extradata_size); - return -1; - } - - buf2 = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE); - if(start[0]) start++; // in WVC1 extradata first byte is its size - next = start; - for(; next < end; start = next){ - next = find_next_marker(start + 4, end); - size = next - start - 4; - if(size <= 0) continue; - buf2_size = vc1_unescape_buffer(start + 4, size, buf2); - init_get_bits(&gb, buf2, buf2_size * 8); - switch(AV_RB32(start)){ - case VC1_CODE_SEQHDR: - if(vc1_decode_sequence_header(avctx, v, &gb) < 0){ - av_free(buf2); - return -1; - } - seq_initialized = 1; - break; - case VC1_CODE_ENTRYPOINT: - if(vc1_decode_entry_point(avctx, v, &gb) < 0){ - av_free(buf2); - return -1; - } - ep_initialized = 1; - break; - } - } - av_free(buf2); - if(!seq_initialized || !ep_initialized){ - av_log(avctx, AV_LOG_ERROR, "Incomplete extradata\n"); - return -1; - } - } - avctx->has_b_frames= !!(avctx->max_b_frames); - s->low_delay = !avctx->has_b_frames; - - s->mb_width = (avctx->coded_width+15)>>4; - s->mb_height = (avctx->coded_height+15)>>4; - - /* Allocate mb bitplanes */ - v->mv_type_mb_plane = av_malloc(s->mb_stride * s->mb_height); - v->direct_mb_plane = av_malloc(s->mb_stride * s->mb_height); - v->acpred_plane = av_malloc(s->mb_stride * s->mb_height); - v->over_flags_plane = av_malloc(s->mb_stride * s->mb_height); - - v->cbp_base = av_malloc(sizeof(v->cbp_base[0]) * 2 * s->mb_stride); - v->cbp = v->cbp_base + s->mb_stride; - - /* allocate block type info in that way so it could be used with s->block_index[] */ - v->mb_type_base = av_malloc(s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride * (s->mb_height + 1) * 2); - v->mb_type[0] = v->mb_type_base + s->b8_stride + 1; - v->mb_type[1] = v->mb_type_base + s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride + 1; - v->mb_type[2] = v->mb_type[1] + s->mb_stride * (s->mb_height + 1); - - /* Init coded blocks info */ - if (v->profile == PROFILE_ADVANCED) - { -// if (alloc_bitplane(&v->over_flags_plane, s->mb_width, s->mb_height) < 0) -// return -1; -// if (alloc_bitplane(&v->ac_pred_plane, s->mb_width, s->mb_height) < 0) -// return -1; - } - - ff_intrax8_common_init(&v->x8,s); - return 0; -} - - -/** Decode a VC1/WMV3 frame - * @todo TODO: Handle VC-1 IDUs (Transport level?) - */ -static int vc1_decode_frame(AVCodecContext *avctx, - void *data, int *data_size, - AVPacket *avpkt) -{ - const uint8_t *buf = avpkt->data; - int buf_size = avpkt->size; - VC1Context *v = avctx->priv_data; - MpegEncContext *s = &v->s; - AVFrame *pict = data; - uint8_t *buf2 = NULL; - const uint8_t *buf_start = buf; - - /* no supplementary picture */ - if (buf_size == 0) { - /* special case for last picture */ - if (s->low_delay==0 && s->next_picture_ptr) { - *pict= *(AVFrame*)s->next_picture_ptr; - s->next_picture_ptr= NULL; - - *data_size = sizeof(AVFrame); - } - - return 0; - } - - /* We need to set current_picture_ptr before reading the header, - * otherwise we cannot store anything in there. */ - if(s->current_picture_ptr==NULL || s->current_picture_ptr->data[0]){ - int i= ff_find_unused_picture(s, 0); - s->current_picture_ptr= &s->picture[i]; - } - - if (s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU){ - if (v->profile < PROFILE_ADVANCED) - avctx->pix_fmt = PIX_FMT_VDPAU_WMV3; - else - avctx->pix_fmt = PIX_FMT_VDPAU_VC1; - } - - //for advanced profile we may need to parse and unescape data - if (avctx->codec_id == CODEC_ID_VC1) { - int buf_size2 = 0; - buf2 = av_mallocz(buf_size + FF_INPUT_BUFFER_PADDING_SIZE); - - if(IS_MARKER(AV_RB32(buf))){ /* frame starts with marker and needs to be parsed */ - const uint8_t *start, *end, *next; - int size; - - next = buf; - for(start = buf, end = buf + buf_size; next < end; start = next){ - next = find_next_marker(start + 4, end); - size = next - start - 4; - if(size <= 0) continue; - switch(AV_RB32(start)){ - case VC1_CODE_FRAME: - if (avctx->hwaccel || - s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU) - buf_start = start; - buf_size2 = vc1_unescape_buffer(start + 4, size, buf2); - break; - case VC1_CODE_ENTRYPOINT: /* it should be before frame data */ - buf_size2 = vc1_unescape_buffer(start + 4, size, buf2); - init_get_bits(&s->gb, buf2, buf_size2*8); - vc1_decode_entry_point(avctx, v, &s->gb); - break; - case VC1_CODE_SLICE: - av_log(avctx, AV_LOG_ERROR, "Sliced decoding is not implemented (yet)\n"); - av_free(buf2); - return -1; - } - } - }else if(v->interlace && ((buf[0] & 0xC0) == 0xC0)){ /* WVC1 interlaced stores both fields divided by marker */ - const uint8_t *divider; - - divider = find_next_marker(buf, buf + buf_size); - if((divider == (buf + buf_size)) || AV_RB32(divider) != VC1_CODE_FIELD){ - av_log(avctx, AV_LOG_ERROR, "Error in WVC1 interlaced frame\n"); - av_free(buf2); - return -1; - } - - buf_size2 = vc1_unescape_buffer(buf, divider - buf, buf2); - // TODO - av_free(buf2);return -1; - }else{ - buf_size2 = vc1_unescape_buffer(buf, buf_size, buf2); - } - init_get_bits(&s->gb, buf2, buf_size2*8); - } else - init_get_bits(&s->gb, buf, buf_size*8); - // do parse frame header - if(v->profile < PROFILE_ADVANCED) { - if(vc1_parse_frame_header(v, &s->gb) == -1) { - av_free(buf2); - return -1; - } - } else { - if(vc1_parse_frame_header_adv(v, &s->gb) == -1) { - av_free(buf2); - return -1; - } - } - - if(s->pict_type != FF_I_TYPE && !v->res_rtm_flag){ - av_free(buf2); - return -1; - } - - // for hurry_up==5 - s->current_picture.pict_type= s->pict_type; - s->current_picture.key_frame= s->pict_type == FF_I_TYPE; - - /* skip B-frames if we don't have reference frames */ - if(s->last_picture_ptr==NULL && (s->pict_type==FF_B_TYPE || s->dropable)){ - av_free(buf2); - return -1;//buf_size; - } - /* skip b frames if we are in a hurry */ - if(avctx->hurry_up && s->pict_type==FF_B_TYPE) return -1;//buf_size; - if( (avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type==FF_B_TYPE) - || (avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type!=FF_I_TYPE) - || avctx->skip_frame >= AVDISCARD_ALL) { - av_free(buf2); - return buf_size; - } - /* skip everything if we are in a hurry>=5 */ - if(avctx->hurry_up>=5) { - av_free(buf2); - return -1;//buf_size; - } - - if(s->next_p_frame_damaged){ - if(s->pict_type==FF_B_TYPE) - return buf_size; - else - s->next_p_frame_damaged=0; - } - - if(MPV_frame_start(s, avctx) < 0) { - av_free(buf2); - return -1; - } - - s->me.qpel_put= s->dsp.put_qpel_pixels_tab; - s->me.qpel_avg= s->dsp.avg_qpel_pixels_tab; - - if ((CONFIG_VC1_VDPAU_DECODER || CONFIG_WMV3_VDPAU_DECODER) - &&s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU) - ff_vdpau_vc1_decode_picture(s, buf_start, (buf + buf_size) - buf_start); - else if (avctx->hwaccel) { - if (avctx->hwaccel->start_frame(avctx, buf, buf_size) < 0) - return -1; - if (avctx->hwaccel->decode_slice(avctx, buf_start, (buf + buf_size) - buf_start) < 0) - return -1; - if (avctx->hwaccel->end_frame(avctx) < 0) - return -1; - } else { - ff_er_frame_start(s); - - v->bits = buf_size * 8; - vc1_decode_blocks(v); -//av_log(s->avctx, AV_LOG_INFO, "Consumed %i/%i bits\n", get_bits_count(&s->gb), buf_size*8); -// if(get_bits_count(&s->gb) > buf_size * 8) -// return -1; - ff_er_frame_end(s); - } - - MPV_frame_end(s); - -assert(s->current_picture.pict_type == s->current_picture_ptr->pict_type); -assert(s->current_picture.pict_type == s->pict_type); - if (s->pict_type == FF_B_TYPE || s->low_delay) { - *pict= *(AVFrame*)s->current_picture_ptr; - } else if (s->last_picture_ptr != NULL) { - *pict= *(AVFrame*)s->last_picture_ptr; - } - - if(s->last_picture_ptr || s->low_delay){ - *data_size = sizeof(AVFrame); - ff_print_debug_info(s, pict); - } - - av_free(buf2); - return buf_size; -} - - -/** Close a VC1/WMV3 decoder - * @warning Initial try at using MpegEncContext stuff - */ -static av_cold int vc1_decode_end(AVCodecContext *avctx) -{ - VC1Context *v = avctx->priv_data; - - av_freep(&v->hrd_rate); - av_freep(&v->hrd_buffer); - MPV_common_end(&v->s); - av_freep(&v->mv_type_mb_plane); - av_freep(&v->direct_mb_plane); - av_freep(&v->acpred_plane); - av_freep(&v->over_flags_plane); - av_freep(&v->mb_type_base); - av_freep(&v->cbp_base); - ff_intrax8_common_end(&v->x8); - return 0; -} - - -AVCodec vc1_decoder = { - "vc1", - CODEC_TYPE_VIDEO, - CODEC_ID_VC1, - sizeof(VC1Context), - vc1_decode_init, - NULL, - vc1_decode_end, - vc1_decode_frame, - CODEC_CAP_DR1 | CODEC_CAP_DELAY, - NULL, - .long_name = NULL_IF_CONFIG_SMALL("SMPTE VC-1"), - .pix_fmts = ff_hwaccel_pixfmt_list_420 -}; - -AVCodec wmv3_decoder = { - "wmv3", - CODEC_TYPE_VIDEO, - CODEC_ID_WMV3, - sizeof(VC1Context), - vc1_decode_init, - NULL, - vc1_decode_end, - vc1_decode_frame, - CODEC_CAP_DR1 | CODEC_CAP_DELAY, - NULL, - .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9"), - .pix_fmts = ff_hwaccel_pixfmt_list_420 -}; - -#if CONFIG_WMV3_VDPAU_DECODER -AVCodec wmv3_vdpau_decoder = { - "wmv3_vdpau", - CODEC_TYPE_VIDEO, - CODEC_ID_WMV3, - sizeof(VC1Context), - vc1_decode_init, - NULL, - vc1_decode_end, - vc1_decode_frame, - CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU, - NULL, - .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9 VDPAU"), - .pix_fmts = (enum PixelFormat[]){PIX_FMT_VDPAU_WMV3, PIX_FMT_NONE} -}; -#endif - -#if CONFIG_VC1_VDPAU_DECODER -AVCodec vc1_vdpau_decoder = { - "vc1_vdpau", - CODEC_TYPE_VIDEO, - CODEC_ID_VC1, - sizeof(VC1Context), - vc1_decode_init, - NULL, - vc1_decode_end, - vc1_decode_frame, - CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU, - NULL, - .long_name = NULL_IF_CONFIG_SMALL("SMPTE VC-1 VDPAU"), - .pix_fmts = (enum PixelFormat[]){PIX_FMT_VDPAU_VC1, PIX_FMT_NONE} -}; -#endif diff --git a/libavcodec/vc1dec.c b/libavcodec/vc1dec.c new file mode 100644 index 0000000000..5d4dd0633b --- /dev/null +++ b/libavcodec/vc1dec.c @@ -0,0 +1,3367 @@ +/* + * VC-1 and WMV3 decoder + * Copyright (c) 2006-2007 Konstantin Shishkov + * Partly based on vc9.c (c) 2005 Anonymous, Alex Beregszaszi, Michael Niedermayer + * + * This file is part of FFmpeg. + * + * FFmpeg is free software; you can redistribute it and/or + * modify it under the terms of the GNU Lesser General Public + * License as published by the Free Software Foundation; either + * version 2.1 of the License, or (at your option) any later version. + * + * FFmpeg is distributed in the hope that it will be useful, + * but WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * Lesser General Public License for more details. + * + * You should have received a copy of the GNU Lesser General Public + * License along with FFmpeg; if not, write to the Free Software + * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA + */ + +/** + * @file libavcodec/vc1dec.c + * VC-1 and WMV3 decoder + * + */ +#include "internal.h" +#include "dsputil.h" +#include "avcodec.h" +#include "mpegvideo.h" +#include "vc1.h" +#include "vc1data.h" +#include "vc1acdata.h" +#include "msmpeg4data.h" +#include "unary.h" +#include "simple_idct.h" +#include "mathops.h" +#include "vdpau_internal.h" + +#undef NDEBUG +#include <assert.h> + +#define MB_INTRA_VLC_BITS 9 +#define DC_VLC_BITS 9 +#define AC_VLC_BITS 9 +static const uint16_t table_mb_intra[64][2]; + + +static const uint16_t vlc_offs[] = { + 0, 520, 552, 616, 1128, 1160, 1224, 1740, 1772, 1836, 1900, 2436, + 2986, 3050, 3610, 4154, 4218, 4746, 5326, 5390, 5902, 6554, 7658, 8620, + 9262, 10202, 10756, 11310, 12228, 15078 +}; + +/** + * Init VC-1 specific tables and VC1Context members + * @param v The VC1Context to initialize + * @return Status + */ +static int vc1_init_common(VC1Context *v) +{ + static int done = 0; + int i = 0; + static VLC_TYPE vlc_table[15078][2]; + + v->hrd_rate = v->hrd_buffer = NULL; + + /* VLC tables */ + if(!done) + { + INIT_VLC_STATIC(&ff_vc1_bfraction_vlc, VC1_BFRACTION_VLC_BITS, 23, + ff_vc1_bfraction_bits, 1, 1, + ff_vc1_bfraction_codes, 1, 1, 1 << VC1_BFRACTION_VLC_BITS); + INIT_VLC_STATIC(&ff_vc1_norm2_vlc, VC1_NORM2_VLC_BITS, 4, + ff_vc1_norm2_bits, 1, 1, + ff_vc1_norm2_codes, 1, 1, 1 << VC1_NORM2_VLC_BITS); + INIT_VLC_STATIC(&ff_vc1_norm6_vlc, VC1_NORM6_VLC_BITS, 64, + ff_vc1_norm6_bits, 1, 1, + ff_vc1_norm6_codes, 2, 2, 556); + INIT_VLC_STATIC(&ff_vc1_imode_vlc, VC1_IMODE_VLC_BITS, 7, + ff_vc1_imode_bits, 1, 1, + ff_vc1_imode_codes, 1, 1, 1 << VC1_IMODE_VLC_BITS); + for (i=0; i<3; i++) + { + ff_vc1_ttmb_vlc[i].table = &vlc_table[vlc_offs[i*3+0]]; + ff_vc1_ttmb_vlc[i].table_allocated = vlc_offs[i*3+1] - vlc_offs[i*3+0]; + init_vlc(&ff_vc1_ttmb_vlc[i], VC1_TTMB_VLC_BITS, 16, + ff_vc1_ttmb_bits[i], 1, 1, + ff_vc1_ttmb_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC); + ff_vc1_ttblk_vlc[i].table = &vlc_table[vlc_offs[i*3+1]]; + ff_vc1_ttblk_vlc[i].table_allocated = vlc_offs[i*3+2] - vlc_offs[i*3+1]; + init_vlc(&ff_vc1_ttblk_vlc[i], VC1_TTBLK_VLC_BITS, 8, + ff_vc1_ttblk_bits[i], 1, 1, + ff_vc1_ttblk_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC); + ff_vc1_subblkpat_vlc[i].table = &vlc_table[vlc_offs[i*3+2]]; + ff_vc1_subblkpat_vlc[i].table_allocated = vlc_offs[i*3+3] - vlc_offs[i*3+2]; + init_vlc(&ff_vc1_subblkpat_vlc[i], VC1_SUBBLKPAT_VLC_BITS, 15, + ff_vc1_subblkpat_bits[i], 1, 1, + ff_vc1_subblkpat_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC); + } + for(i=0; i<4; i++) + { + ff_vc1_4mv_block_pattern_vlc[i].table = &vlc_table[vlc_offs[i*3+9]]; + ff_vc1_4mv_block_pattern_vlc[i].table_allocated = vlc_offs[i*3+10] - vlc_offs[i*3+9]; + init_vlc(&ff_vc1_4mv_block_pattern_vlc[i], VC1_4MV_BLOCK_PATTERN_VLC_BITS, 16, + ff_vc1_4mv_block_pattern_bits[i], 1, 1, + ff_vc1_4mv_block_pattern_codes[i], 1, 1, INIT_VLC_USE_NEW_STATIC); + ff_vc1_cbpcy_p_vlc[i].table = &vlc_table[vlc_offs[i*3+10]]; + ff_vc1_cbpcy_p_vlc[i].table_allocated = vlc_offs[i*3+11] - vlc_offs[i*3+10]; + init_vlc(&ff_vc1_cbpcy_p_vlc[i], VC1_CBPCY_P_VLC_BITS, 64, + ff_vc1_cbpcy_p_bits[i], 1, 1, + ff_vc1_cbpcy_p_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC); + ff_vc1_mv_diff_vlc[i].table = &vlc_table[vlc_offs[i*3+11]]; + ff_vc1_mv_diff_vlc[i].table_allocated = vlc_offs[i*3+12] - vlc_offs[i*3+11]; + init_vlc(&ff_vc1_mv_diff_vlc[i], VC1_MV_DIFF_VLC_BITS, 73, + ff_vc1_mv_diff_bits[i], 1, 1, + ff_vc1_mv_diff_codes[i], 2, 2, INIT_VLC_USE_NEW_STATIC); + } + for(i=0; i<8; i++){ + ff_vc1_ac_coeff_table[i].table = &vlc_table[vlc_offs[i+21]]; + ff_vc1_ac_coeff_table[i].table_allocated = vlc_offs[i+22] - vlc_offs[i+21]; + init_vlc(&ff_vc1_ac_coeff_table[i], AC_VLC_BITS, vc1_ac_sizes[i], + &vc1_ac_tables[i][0][1], 8, 4, + &vc1_ac_tables[i][0][0], 8, 4, INIT_VLC_USE_NEW_STATIC); + } + //FIXME: switching to INIT_VLC_STATIC() results in incorrect decoding + init_vlc(&ff_msmp4_mb_i_vlc, MB_INTRA_VLC_BITS, 64, + &ff_msmp4_mb_i_table[0][1], 4, 2, + &ff_msmp4_mb_i_table[0][0], 4, 2, INIT_VLC_USE_STATIC); + done = 1; + } + + /* Other defaults */ + v->pq = -1; + v->mvrange = 0; /* 7.1.1.18, p80 */ + + return 0; +} + +/***********************************************************************/ +/** + * @defgroup vc1bitplane VC-1 Bitplane decoding + * @see 8.7, p56 + * @{ + */ + +/** + * Imode types + * @{ + */ +enum Imode { + IMODE_RAW, + IMODE_NORM2, + IMODE_DIFF2, + IMODE_NORM6, + IMODE_DIFF6, + IMODE_ROWSKIP, + IMODE_COLSKIP +}; +/** @} */ //imode defines + + +/** @} */ //Bitplane group + +static void vc1_loop_filter_iblk(MpegEncContext *s, int pq) +{ + int i, j; + if(!s->first_slice_line) + s->dsp.vc1_v_loop_filter16(s->dest[0], s->linesize, pq); + s->dsp.vc1_v_loop_filter16(s->dest[0] + 8*s->linesize, s->linesize, pq); + for(i = !s->mb_x*8; i < 16; i += 8) + s->dsp.vc1_h_loop_filter16(s->dest[0] + i, s->linesize, pq); + for(j = 0; j < 2; j++){ + if(!s->first_slice_line) + s->dsp.vc1_v_loop_filter8(s->dest[j+1], s->uvlinesize, pq); + if(s->mb_x) + s->dsp.vc1_h_loop_filter8(s->dest[j+1], s->uvlinesize, pq); + } +} + +/** Put block onto picture + */ +static void vc1_put_block(VC1Context *v, DCTELEM block[6][64]) +{ + uint8_t *Y; + int ys, us, vs; + DSPContext *dsp = &v->s.dsp; + + if(v->rangeredfrm) { + int i, j, k; + for(k = 0; k < 6; k++) + for(j = 0; j < 8; j++) + for(i = 0; i < 8; i++) + block[k][i + j*8] = ((block[k][i + j*8] - 128) << 1) + 128; + + } + ys = v->s.current_picture.linesize[0]; + us = v->s.current_picture.linesize[1]; + vs = v->s.current_picture.linesize[2]; + Y = v->s.dest[0]; + + dsp->put_pixels_clamped(block[0], Y, ys); + dsp->put_pixels_clamped(block[1], Y + 8, ys); + Y += ys * 8; + dsp->put_pixels_clamped(block[2], Y, ys); + dsp->put_pixels_clamped(block[3], Y + 8, ys); + + if(!(v->s.flags & CODEC_FLAG_GRAY)) { + dsp->put_pixels_clamped(block[4], v->s.dest[1], us); + dsp->put_pixels_clamped(block[5], v->s.dest[2], vs); + } +} + +/** Do motion compensation over 1 macroblock + * Mostly adapted hpel_motion and qpel_motion from mpegvideo.c + */ +static void vc1_mc_1mv(VC1Context *v, int dir) +{ + MpegEncContext *s = &v->s; + DSPContext *dsp = &v->s.dsp; + uint8_t *srcY, *srcU, *srcV; + int dxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y; + + if(!v->s.last_picture.data[0])return; + + mx = s->mv[dir][0][0]; + my = s->mv[dir][0][1]; + + // store motion vectors for further use in B frames + if(s->pict_type == FF_P_TYPE) { + s->current_picture.motion_val[1][s->block_index[0]][0] = mx; + s->current_picture.motion_val[1][s->block_index[0]][1] = my; + } + uvmx = (mx + ((mx & 3) == 3)) >> 1; + uvmy = (my + ((my & 3) == 3)) >> 1; + if(v->fastuvmc) { + uvmx = uvmx + ((uvmx<0)?(uvmx&1):-(uvmx&1)); + uvmy = uvmy + ((uvmy<0)?(uvmy&1):-(uvmy&1)); + } + if(!dir) { + srcY = s->last_picture.data[0]; + srcU = s->last_picture.data[1]; + srcV = s->last_picture.data[2]; + } else { + srcY = s->next_picture.data[0]; + srcU = s->next_picture.data[1]; + srcV = s->next_picture.data[2]; + } + + src_x = s->mb_x * 16 + (mx >> 2); + src_y = s->mb_y * 16 + (my >> 2); + uvsrc_x = s->mb_x * 8 + (uvmx >> 2); + uvsrc_y = s->mb_y * 8 + (uvmy >> 2); + + if(v->profile != PROFILE_ADVANCED){ + src_x = av_clip( src_x, -16, s->mb_width * 16); + src_y = av_clip( src_y, -16, s->mb_height * 16); + uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8); + uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8); + }else{ + src_x = av_clip( src_x, -17, s->avctx->coded_width); + src_y = av_clip( src_y, -18, s->avctx->coded_height + 1); + uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1); + uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1); + } + + srcY += src_y * s->linesize + src_x; + srcU += uvsrc_y * s->uvlinesize + uvsrc_x; + srcV += uvsrc_y * s->uvlinesize + uvsrc_x; + + /* for grayscale we should not try to read from unknown area */ + if(s->flags & CODEC_FLAG_GRAY) { + srcU = s->edge_emu_buffer + 18 * s->linesize; + srcV = s->edge_emu_buffer + 18 * s->linesize; + } + + if(v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP) + || (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx&3) - 16 - s->mspel*3 + || (unsigned)(src_y - s->mspel) > s->v_edge_pos - (my&3) - 16 - s->mspel*3){ + uint8_t *uvbuf= s->edge_emu_buffer + 19 * s->linesize; + + srcY -= s->mspel * (1 + s->linesize); + ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 17+s->mspel*2, 17+s->mspel*2, + src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos); + srcY = s->edge_emu_buffer; + ff_emulated_edge_mc(uvbuf , srcU, s->uvlinesize, 8+1, 8+1, + uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1); + ff_emulated_edge_mc(uvbuf + 16, srcV, s->uvlinesize, 8+1, 8+1, + uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1); + srcU = uvbuf; + srcV = uvbuf + 16; + /* if we deal with range reduction we need to scale source blocks */ + if(v->rangeredfrm) { + int i, j; + uint8_t *src, *src2; + + src = srcY; + for(j = 0; j < 17 + s->mspel*2; j++) { + for(i = 0; i < 17 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128; + src += s->linesize; + } + src = srcU; src2 = srcV; + for(j = 0; j < 9; j++) { + for(i = 0; i < 9; i++) { + src[i] = ((src[i] - 128) >> 1) + 128; + src2[i] = ((src2[i] - 128) >> 1) + 128; + } + src += s->uvlinesize; + src2 += s->uvlinesize; + } + } + /* if we deal with intensity compensation we need to scale source blocks */ + if(v->mv_mode == MV_PMODE_INTENSITY_COMP) { + int i, j; + uint8_t *src, *src2; + + src = srcY; + for(j = 0; j < 17 + s->mspel*2; j++) { + for(i = 0; i < 17 + s->mspel*2; i++) src[i] = v->luty[src[i]]; + src += s->linesize; + } + src = srcU; src2 = srcV; + for(j = 0; j < 9; j++) { + for(i = 0; i < 9; i++) { + src[i] = v->lutuv[src[i]]; + src2[i] = v->lutuv[src2[i]]; + } + src += s->uvlinesize; + src2 += s->uvlinesize; + } + } + srcY += s->mspel * (1 + s->linesize); + } + + if(s->mspel) { + dxy = ((my & 3) << 2) | (mx & 3); + dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] , srcY , s->linesize, v->rnd); + dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8, srcY + 8, s->linesize, v->rnd); + srcY += s->linesize * 8; + dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize , srcY , s->linesize, v->rnd); + dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize + 8, srcY + 8, s->linesize, v->rnd); + } else { // hpel mc - always used for luma + dxy = (my & 2) | ((mx & 2) >> 1); + + if(!v->rnd) + dsp->put_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16); + else + dsp->put_no_rnd_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16); + } + + if(s->flags & CODEC_FLAG_GRAY) return; + /* Chroma MC always uses qpel bilinear */ + uvmx = (uvmx&3)<<1; + uvmy = (uvmy&3)<<1; + if(!v->rnd){ + dsp->put_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy); + dsp->put_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy); + }else{ + dsp->put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy); + dsp->put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy); + } +} + +/** Do motion compensation for 4-MV macroblock - luminance block + */ +static void vc1_mc_4mv_luma(VC1Context *v, int n) +{ + MpegEncContext *s = &v->s; + DSPContext *dsp = &v->s.dsp; + uint8_t *srcY; + int dxy, mx, my, src_x, src_y; + int off; + + if(!v->s.last_picture.data[0])return; + mx = s->mv[0][n][0]; + my = s->mv[0][n][1]; + srcY = s->last_picture.data[0]; + + off = s->linesize * 4 * (n&2) + (n&1) * 8; + + src_x = s->mb_x * 16 + (n&1) * 8 + (mx >> 2); + src_y = s->mb_y * 16 + (n&2) * 4 + (my >> 2); + + if(v->profile != PROFILE_ADVANCED){ + src_x = av_clip( src_x, -16, s->mb_width * 16); + src_y = av_clip( src_y, -16, s->mb_height * 16); + }else{ + src_x = av_clip( src_x, -17, s->avctx->coded_width); + src_y = av_clip( src_y, -18, s->avctx->coded_height + 1); + } + + srcY += src_y * s->linesize + src_x; + + if(v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP) + || (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx&3) - 8 - s->mspel*2 + || (unsigned)(src_y - s->mspel) > s->v_edge_pos - (my&3) - 8 - s->mspel*2){ + srcY -= s->mspel * (1 + s->linesize); + ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 9+s->mspel*2, 9+s->mspel*2, + src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos); + srcY = s->edge_emu_buffer; + /* if we deal with range reduction we need to scale source blocks */ + if(v->rangeredfrm) { + int i, j; + uint8_t *src; + + src = srcY; + for(j = 0; j < 9 + s->mspel*2; j++) { + for(i = 0; i < 9 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128; + src += s->linesize; + } + } + /* if we deal with intensity compensation we need to scale source blocks */ + if(v->mv_mode == MV_PMODE_INTENSITY_COMP) { + int i, j; + uint8_t *src; + + src = srcY; + for(j = 0; j < 9 + s->mspel*2; j++) { + for(i = 0; i < 9 + s->mspel*2; i++) src[i] = v->luty[src[i]]; + src += s->linesize; + } + } + srcY += s->mspel * (1 + s->linesize); + } + + if(s->mspel) { + dxy = ((my & 3) << 2) | (mx & 3); + dsp->put_vc1_mspel_pixels_tab[dxy](s->dest[0] + off, srcY, s->linesize, v->rnd); + } else { // hpel mc - always used for luma + dxy = (my & 2) | ((mx & 2) >> 1); + if(!v->rnd) + dsp->put_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize, 8); + else + dsp->put_no_rnd_pixels_tab[1][dxy](s->dest[0] + off, srcY, s->linesize, 8); + } +} + +static inline int median4(int a, int b, int c, int d) +{ + if(a < b) { + if(c < d) return (FFMIN(b, d) + FFMAX(a, c)) / 2; + else return (FFMIN(b, c) + FFMAX(a, d)) / 2; + } else { + if(c < d) return (FFMIN(a, d) + FFMAX(b, c)) / 2; + else return (FFMIN(a, c) + FFMAX(b, d)) / 2; + } +} + + +/** Do motion compensation for 4-MV macroblock - both chroma blocks + */ +static void vc1_mc_4mv_chroma(VC1Context *v) +{ + MpegEncContext *s = &v->s; + DSPContext *dsp = &v->s.dsp; + uint8_t *srcU, *srcV; + int uvmx, uvmy, uvsrc_x, uvsrc_y; + int i, idx, tx = 0, ty = 0; + int mvx[4], mvy[4], intra[4]; + static const int count[16] = { 0, 1, 1, 2, 1, 2, 2, 3, 1, 2, 2, 3, 2, 3, 3, 4}; + + if(!v->s.last_picture.data[0])return; + if(s->flags & CODEC_FLAG_GRAY) return; + + for(i = 0; i < 4; i++) { + mvx[i] = s->mv[0][i][0]; + mvy[i] = s->mv[0][i][1]; + intra[i] = v->mb_type[0][s->block_index[i]]; + } + + /* calculate chroma MV vector from four luma MVs */ + idx = (intra[3] << 3) | (intra[2] << 2) | (intra[1] << 1) | intra[0]; + if(!idx) { // all blocks are inter + tx = median4(mvx[0], mvx[1], mvx[2], mvx[3]); + ty = median4(mvy[0], mvy[1], mvy[2], mvy[3]); + } else if(count[idx] == 1) { // 3 inter blocks + switch(idx) { + case 0x1: + tx = mid_pred(mvx[1], mvx[2], mvx[3]); + ty = mid_pred(mvy[1], mvy[2], mvy[3]); + break; + case 0x2: + tx = mid_pred(mvx[0], mvx[2], mvx[3]); + ty = mid_pred(mvy[0], mvy[2], mvy[3]); + break; + case 0x4: + tx = mid_pred(mvx[0], mvx[1], mvx[3]); + ty = mid_pred(mvy[0], mvy[1], mvy[3]); + break; + case 0x8: + tx = mid_pred(mvx[0], mvx[1], mvx[2]); + ty = mid_pred(mvy[0], mvy[1], mvy[2]); + break; + } + } else if(count[idx] == 2) { + int t1 = 0, t2 = 0; + for(i=0; i<3;i++) if(!intra[i]) {t1 = i; break;} + for(i= t1+1; i<4; i++)if(!intra[i]) {t2 = i; break;} + tx = (mvx[t1] + mvx[t2]) / 2; + ty = (mvy[t1] + mvy[t2]) / 2; + } else { + s->current_picture.motion_val[1][s->block_index[0]][0] = 0; + s->current_picture.motion_val[1][s->block_index[0]][1] = 0; + return; //no need to do MC for inter blocks + } + + s->current_picture.motion_val[1][s->block_index[0]][0] = tx; + s->current_picture.motion_val[1][s->block_index[0]][1] = ty; + uvmx = (tx + ((tx&3) == 3)) >> 1; + uvmy = (ty + ((ty&3) == 3)) >> 1; + if(v->fastuvmc) { + uvmx = uvmx + ((uvmx<0)?(uvmx&1):-(uvmx&1)); + uvmy = uvmy + ((uvmy<0)?(uvmy&1):-(uvmy&1)); + } + + uvsrc_x = s->mb_x * 8 + (uvmx >> 2); + uvsrc_y = s->mb_y * 8 + (uvmy >> 2); + + if(v->profile != PROFILE_ADVANCED){ + uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8); + uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8); + }else{ + uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1); + uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1); + } + + srcU = s->last_picture.data[1] + uvsrc_y * s->uvlinesize + uvsrc_x; + srcV = s->last_picture.data[2] + uvsrc_y * s->uvlinesize + uvsrc_x; + if(v->rangeredfrm || (v->mv_mode == MV_PMODE_INTENSITY_COMP) + || (unsigned)uvsrc_x > (s->h_edge_pos >> 1) - 9 + || (unsigned)uvsrc_y > (s->v_edge_pos >> 1) - 9){ + ff_emulated_edge_mc(s->edge_emu_buffer , srcU, s->uvlinesize, 8+1, 8+1, + uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1); + ff_emulated_edge_mc(s->edge_emu_buffer + 16, srcV, s->uvlinesize, 8+1, 8+1, + uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1); + srcU = s->edge_emu_buffer; + srcV = s->edge_emu_buffer + 16; + + /* if we deal with range reduction we need to scale source blocks */ + if(v->rangeredfrm) { + int i, j; + uint8_t *src, *src2; + + src = srcU; src2 = srcV; + for(j = 0; j < 9; j++) { + for(i = 0; i < 9; i++) { + src[i] = ((src[i] - 128) >> 1) + 128; + src2[i] = ((src2[i] - 128) >> 1) + 128; + } + src += s->uvlinesize; + src2 += s->uvlinesize; + } + } + /* if we deal with intensity compensation we need to scale source blocks */ + if(v->mv_mode == MV_PMODE_INTENSITY_COMP) { + int i, j; + uint8_t *src, *src2; + + src = srcU; src2 = srcV; + for(j = 0; j < 9; j++) { + for(i = 0; i < 9; i++) { + src[i] = v->lutuv[src[i]]; + src2[i] = v->lutuv[src2[i]]; + } + src += s->uvlinesize; + src2 += s->uvlinesize; + } + } + } + + /* Chroma MC always uses qpel bilinear */ + uvmx = (uvmx&3)<<1; + uvmy = (uvmy&3)<<1; + if(!v->rnd){ + dsp->put_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy); + dsp->put_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy); + }else{ + dsp->put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy); + dsp->put_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy); + } +} + +/***********************************************************************/ +/** + * @defgroup vc1block VC-1 Block-level functions + * @see 7.1.4, p91 and 8.1.1.7, p(1)04 + * @{ + */ + +/** + * @def GET_MQUANT + * @brief Get macroblock-level quantizer scale + */ +#define GET_MQUANT() \ + if (v->dquantfrm) \ + { \ + int edges = 0; \ + if (v->dqprofile == DQPROFILE_ALL_MBS) \ + { \ + if (v->dqbilevel) \ + { \ + mquant = (get_bits1(gb)) ? v->altpq : v->pq; \ + } \ + else \ + { \ + mqdiff = get_bits(gb, 3); \ + if (mqdiff != 7) mquant = v->pq + mqdiff; \ + else mquant = get_bits(gb, 5); \ + } \ + } \ + if(v->dqprofile == DQPROFILE_SINGLE_EDGE) \ + edges = 1 << v->dqsbedge; \ + else if(v->dqprofile == DQPROFILE_DOUBLE_EDGES) \ + edges = (3 << v->dqsbedge) % 15; \ + else if(v->dqprofile == DQPROFILE_FOUR_EDGES) \ + edges = 15; \ + if((edges&1) && !s->mb_x) \ + mquant = v->altpq; \ + if((edges&2) && s->first_slice_line) \ + mquant = v->altpq; \ + if((edges&4) && s->mb_x == (s->mb_width - 1)) \ + mquant = v->altpq; \ + if((edges&8) && s->mb_y == (s->mb_height - 1)) \ + mquant = v->altpq; \ + } + +/** + * @def GET_MVDATA(_dmv_x, _dmv_y) + * @brief Get MV differentials + * @see MVDATA decoding from 8.3.5.2, p(1)20 + * @param _dmv_x Horizontal differential for decoded MV + * @param _dmv_y Vertical differential for decoded MV + */ +#define GET_MVDATA(_dmv_x, _dmv_y) \ + index = 1 + get_vlc2(gb, ff_vc1_mv_diff_vlc[s->mv_table_index].table,\ + VC1_MV_DIFF_VLC_BITS, 2); \ + if (index > 36) \ + { \ + mb_has_coeffs = 1; \ + index -= 37; \ + } \ + else mb_has_coeffs = 0; \ + s->mb_intra = 0; \ + if (!index) { _dmv_x = _dmv_y = 0; } \ + else if (index == 35) \ + { \ + _dmv_x = get_bits(gb, v->k_x - 1 + s->quarter_sample); \ + _dmv_y = get_bits(gb, v->k_y - 1 + s->quarter_sample); \ + } \ + else if (index == 36) \ + { \ + _dmv_x = 0; \ + _dmv_y = 0; \ + s->mb_intra = 1; \ + } \ + else \ + { \ + index1 = index%6; \ + if (!s->quarter_sample && index1 == 5) val = 1; \ + else val = 0; \ + if(size_table[index1] - val > 0) \ + val = get_bits(gb, size_table[index1] - val); \ + else val = 0; \ + sign = 0 - (val&1); \ + _dmv_x = (sign ^ ((val>>1) + offset_table[index1])) - sign; \ + \ + index1 = index/6; \ + if (!s->quarter_sample && index1 == 5) val = 1; \ + else val = 0; \ + if(size_table[index1] - val > 0) \ + val = get_bits(gb, size_table[index1] - val); \ + else val = 0; \ + sign = 0 - (val&1); \ + _dmv_y = (sign ^ ((val>>1) + offset_table[index1])) - sign; \ + } + +/** Predict and set motion vector + */ +static inline void vc1_pred_mv(MpegEncContext *s, int n, int dmv_x, int dmv_y, int mv1, int r_x, int r_y, uint8_t* is_intra) +{ + int xy, wrap, off = 0; + int16_t *A, *B, *C; + int px, py; + int sum; + + /* scale MV difference to be quad-pel */ + dmv_x <<= 1 - s->quarter_sample; + dmv_y <<= 1 - s->quarter_sample; + + wrap = s->b8_stride; + xy = s->block_index[n]; + + if(s->mb_intra){ + s->mv[0][n][0] = s->current_picture.motion_val[0][xy][0] = 0; + s->mv[0][n][1] = s->current_picture.motion_val[0][xy][1] = 0; + s->current_picture.motion_val[1][xy][0] = 0; + s->current_picture.motion_val[1][xy][1] = 0; + if(mv1) { /* duplicate motion data for 1-MV block */ + s->current_picture.motion_val[0][xy + 1][0] = 0; + s->current_picture.motion_val[0][xy + 1][1] = 0; + s->current_picture.motion_val[0][xy + wrap][0] = 0; + s->current_picture.motion_val[0][xy + wrap][1] = 0; + s->current_picture.motion_val[0][xy + wrap + 1][0] = 0; + s->current_picture.motion_val[0][xy + wrap + 1][1] = 0; + s->current_picture.motion_val[1][xy + 1][0] = 0; + s->current_picture.motion_val[1][xy + 1][1] = 0; + s->current_picture.motion_val[1][xy + wrap][0] = 0; + s->current_picture.motion_val[1][xy + wrap][1] = 0; + s->current_picture.motion_val[1][xy + wrap + 1][0] = 0; + s->current_picture.motion_val[1][xy + wrap + 1][1] = 0; + } + return; + } + + C = s->current_picture.motion_val[0][xy - 1]; + A = s->current_picture.motion_val[0][xy - wrap]; + if(mv1) + off = (s->mb_x == (s->mb_width - 1)) ? -1 : 2; + else { + //in 4-MV mode different blocks have different B predictor position + switch(n){ + case 0: + off = (s->mb_x > 0) ? -1 : 1; + break; + case 1: + off = (s->mb_x == (s->mb_width - 1)) ? -1 : 1; + break; + case 2: + off = 1; + break; + case 3: + off = -1; + } + } + B = s->current_picture.motion_val[0][xy - wrap + off]; + + if(!s->first_slice_line || (n==2 || n==3)) { // predictor A is not out of bounds + if(s->mb_width == 1) { + px = A[0]; + py = A[1]; + } else { + px = mid_pred(A[0], B[0], C[0]); + py = mid_pred(A[1], B[1], C[1]); + } + } else if(s->mb_x || (n==1 || n==3)) { // predictor C is not out of bounds + px = C[0]; + py = C[1]; + } else { + px = py = 0; + } + /* Pullback MV as specified in 8.3.5.3.4 */ + { + int qx, qy, X, Y; + qx = (s->mb_x << 6) + ((n==1 || n==3) ? 32 : 0); + qy = (s->mb_y << 6) + ((n==2 || n==3) ? 32 : 0); + X = (s->mb_width << 6) - 4; + Y = (s->mb_height << 6) - 4; + if(mv1) { + if(qx + px < -60) px = -60 - qx; + if(qy + py < -60) py = -60 - qy; + } else { + if(qx + px < -28) px = -28 - qx; + if(qy + py < -28) py = -28 - qy; + } + if(qx + px > X) px = X - qx; + if(qy + py > Y) py = Y - qy; + } + /* Calculate hybrid prediction as specified in 8.3.5.3.5 */ + if((!s->first_slice_line || (n==2 || n==3)) && (s->mb_x || (n==1 || n==3))) { + if(is_intra[xy - wrap]) + sum = FFABS(px) + FFABS(py); + else + sum = FFABS(px - A[0]) + FFABS(py - A[1]); + if(sum > 32) { + if(get_bits1(&s->gb)) { + px = A[0]; + py = A[1]; + } else { + px = C[0]; + py = C[1]; + } + } else { + if(is_intra[xy - 1]) + sum = FFABS(px) + FFABS(py); + else + sum = FFABS(px - C[0]) + FFABS(py - C[1]); + if(sum > 32) { + if(get_bits1(&s->gb)) { + px = A[0]; + py = A[1]; + } else { + px = C[0]; + py = C[1]; + } + } + } + } + /* store MV using signed modulus of MV range defined in 4.11 */ + s->mv[0][n][0] = s->current_picture.motion_val[0][xy][0] = ((px + dmv_x + r_x) & ((r_x << 1) - 1)) - r_x; + s->mv[0][n][1] = s->current_picture.motion_val[0][xy][1] = ((py + dmv_y + r_y) & ((r_y << 1) - 1)) - r_y; + if(mv1) { /* duplicate motion data for 1-MV block */ + s->current_picture.motion_val[0][xy + 1][0] = s->current_picture.motion_val[0][xy][0]; + s->current_picture.motion_val[0][xy + 1][1] = s->current_picture.motion_val[0][xy][1]; + s->current_picture.motion_val[0][xy + wrap][0] = s->current_picture.motion_val[0][xy][0]; + s->current_picture.motion_val[0][xy + wrap][1] = s->current_picture.motion_val[0][xy][1]; + s->current_picture.motion_val[0][xy + wrap + 1][0] = s->current_picture.motion_val[0][xy][0]; + s->current_picture.motion_val[0][xy + wrap + 1][1] = s->current_picture.motion_val[0][xy][1]; + } +} + +/** Motion compensation for direct or interpolated blocks in B-frames + */ +static void vc1_interp_mc(VC1Context *v) +{ + MpegEncContext *s = &v->s; + DSPContext *dsp = &v->s.dsp; + uint8_t *srcY, *srcU, *srcV; + int dxy, mx, my, uvmx, uvmy, src_x, src_y, uvsrc_x, uvsrc_y; + + if(!v->s.next_picture.data[0])return; + + mx = s->mv[1][0][0]; + my = s->mv[1][0][1]; + uvmx = (mx + ((mx & 3) == 3)) >> 1; + uvmy = (my + ((my & 3) == 3)) >> 1; + if(v->fastuvmc) { + uvmx = uvmx + ((uvmx<0)?-(uvmx&1):(uvmx&1)); + uvmy = uvmy + ((uvmy<0)?-(uvmy&1):(uvmy&1)); + } + srcY = s->next_picture.data[0]; + srcU = s->next_picture.data[1]; + srcV = s->next_picture.data[2]; + + src_x = s->mb_x * 16 + (mx >> 2); + src_y = s->mb_y * 16 + (my >> 2); + uvsrc_x = s->mb_x * 8 + (uvmx >> 2); + uvsrc_y = s->mb_y * 8 + (uvmy >> 2); + + if(v->profile != PROFILE_ADVANCED){ + src_x = av_clip( src_x, -16, s->mb_width * 16); + src_y = av_clip( src_y, -16, s->mb_height * 16); + uvsrc_x = av_clip(uvsrc_x, -8, s->mb_width * 8); + uvsrc_y = av_clip(uvsrc_y, -8, s->mb_height * 8); + }else{ + src_x = av_clip( src_x, -17, s->avctx->coded_width); + src_y = av_clip( src_y, -18, s->avctx->coded_height + 1); + uvsrc_x = av_clip(uvsrc_x, -8, s->avctx->coded_width >> 1); + uvsrc_y = av_clip(uvsrc_y, -8, s->avctx->coded_height >> 1); + } + + srcY += src_y * s->linesize + src_x; + srcU += uvsrc_y * s->uvlinesize + uvsrc_x; + srcV += uvsrc_y * s->uvlinesize + uvsrc_x; + + /* for grayscale we should not try to read from unknown area */ + if(s->flags & CODEC_FLAG_GRAY) { + srcU = s->edge_emu_buffer + 18 * s->linesize; + srcV = s->edge_emu_buffer + 18 * s->linesize; + } + + if(v->rangeredfrm + || (unsigned)src_x > s->h_edge_pos - (mx&3) - 16 - s->mspel*3 + || (unsigned)src_y > s->v_edge_pos - (my&3) - 16 - s->mspel*3){ + uint8_t *uvbuf= s->edge_emu_buffer + 19 * s->linesize; + + srcY -= s->mspel * (1 + s->linesize); + ff_emulated_edge_mc(s->edge_emu_buffer, srcY, s->linesize, 17+s->mspel*2, 17+s->mspel*2, + src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, s->v_edge_pos); + srcY = s->edge_emu_buffer; + ff_emulated_edge_mc(uvbuf , srcU, s->uvlinesize, 8+1, 8+1, + uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1); + ff_emulated_edge_mc(uvbuf + 16, srcV, s->uvlinesize, 8+1, 8+1, + uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, s->v_edge_pos >> 1); + srcU = uvbuf; + srcV = uvbuf + 16; + /* if we deal with range reduction we need to scale source blocks */ + if(v->rangeredfrm) { + int i, j; + uint8_t *src, *src2; + + src = srcY; + for(j = 0; j < 17 + s->mspel*2; j++) { + for(i = 0; i < 17 + s->mspel*2; i++) src[i] = ((src[i] - 128) >> 1) + 128; + src += s->linesize; + } + src = srcU; src2 = srcV; + for(j = 0; j < 9; j++) { + for(i = 0; i < 9; i++) { + src[i] = ((src[i] - 128) >> 1) + 128; + src2[i] = ((src2[i] - 128) >> 1) + 128; + } + src += s->uvlinesize; + src2 += s->uvlinesize; + } + } + srcY += s->mspel * (1 + s->linesize); + } + + if(s->mspel) { + dxy = ((my & 3) << 2) | (mx & 3); + dsp->avg_vc1_mspel_pixels_tab[dxy](s->dest[0] , srcY , s->linesize, v->rnd); + dsp->avg_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8, srcY + 8, s->linesize, v->rnd); + srcY += s->linesize * 8; + dsp->avg_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize , srcY , s->linesize, v->rnd); + dsp->avg_vc1_mspel_pixels_tab[dxy](s->dest[0] + 8 * s->linesize + 8, srcY + 8, s->linesize, v->rnd); + } else { // hpel mc + dxy = (my & 2) | ((mx & 2) >> 1); + + if(!v->rnd) + dsp->avg_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16); + else + dsp->avg_no_rnd_pixels_tab[0][dxy](s->dest[0], srcY, s->linesize, 16); + } + + if(s->flags & CODEC_FLAG_GRAY) return; + /* Chroma MC always uses qpel blilinear */ + uvmx = (uvmx&3)<<1; + uvmy = (uvmy&3)<<1; + if(!v->rnd){ + dsp->avg_h264_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy); + dsp->avg_h264_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy); + }else{ + dsp->avg_no_rnd_vc1_chroma_pixels_tab[0](s->dest[1], srcU, s->uvlinesize, 8, uvmx, uvmy); + dsp->avg_no_rnd_vc1_chroma_pixels_tab[0](s->dest[2], srcV, s->uvlinesize, 8, uvmx, uvmy); + } +} + +static av_always_inline int scale_mv(int value, int bfrac, int inv, int qs) +{ + int n = bfrac; + +#if B_FRACTION_DEN==256 + if(inv) + n -= 256; + if(!qs) + return 2 * ((value * n + 255) >> 9); + return (value * n + 128) >> 8; +#else + if(inv) + n -= B_FRACTION_DEN; + if(!qs) + return 2 * ((value * n + B_FRACTION_DEN - 1) / (2 * B_FRACTION_DEN)); + return (value * n + B_FRACTION_DEN/2) / B_FRACTION_DEN; +#endif +} + +/** Reconstruct motion vector for B-frame and do motion compensation + */ +static inline void vc1_b_mc(VC1Context *v, int dmv_x[2], int dmv_y[2], int direct, int mode) +{ + if(v->use_ic) { + v->mv_mode2 = v->mv_mode; + v->mv_mode = MV_PMODE_INTENSITY_COMP; + } + if(direct) { + vc1_mc_1mv(v, 0); + vc1_interp_mc(v); + if(v->use_ic) v->mv_mode = v->mv_mode2; + return; + } + if(mode == BMV_TYPE_INTERPOLATED) { + vc1_mc_1mv(v, 0); + vc1_interp_mc(v); + if(v->use_ic) v->mv_mode = v->mv_mode2; + return; + } + + if(v->use_ic && (mode == BMV_TYPE_BACKWARD)) v->mv_mode = v->mv_mode2; + vc1_mc_1mv(v, (mode == BMV_TYPE_BACKWARD)); + if(v->use_ic) v->mv_mode = v->mv_mode2; +} + +static inline void vc1_pred_b_mv(VC1Context *v, int dmv_x[2], int dmv_y[2], int direct, int mvtype) +{ + MpegEncContext *s = &v->s; + int xy, wrap, off = 0; + int16_t *A, *B, *C; + int px, py; + int sum; + int r_x, r_y; + const uint8_t *is_intra = v->mb_type[0]; + + r_x = v->range_x; + r_y = v->range_y; + /* scale MV difference to be quad-pel */ + dmv_x[0] <<= 1 - s->quarter_sample; + dmv_y[0] <<= 1 - s->quarter_sample; + dmv_x[1] <<= 1 - s->quarter_sample; + dmv_y[1] <<= 1 - s->quarter_sample; + + wrap = s->b8_stride; + xy = s->block_index[0]; + + if(s->mb_intra) { + s->current_picture.motion_val[0][xy][0] = + s->current_picture.motion_val[0][xy][1] = + s->current_picture.motion_val[1][xy][0] = + s->current_picture.motion_val[1][xy][1] = 0; + return; + } + s->mv[0][0][0] = scale_mv(s->next_picture.motion_val[1][xy][0], v->bfraction, 0, s->quarter_sample); + s->mv[0][0][1] = scale_mv(s->next_picture.motion_val[1][xy][1], v->bfraction, 0, s->quarter_sample); + s->mv[1][0][0] = scale_mv(s->next_picture.motion_val[1][xy][0], v->bfraction, 1, s->quarter_sample); + s->mv[1][0][1] = scale_mv(s->next_picture.motion_val[1][xy][1], v->bfraction, 1, s->quarter_sample); + + /* Pullback predicted motion vectors as specified in 8.4.5.4 */ + s->mv[0][0][0] = av_clip(s->mv[0][0][0], -60 - (s->mb_x << 6), (s->mb_width << 6) - 4 - (s->mb_x << 6)); + s->mv[0][0][1] = av_clip(s->mv[0][0][1], -60 - (s->mb_y << 6), (s->mb_height << 6) - 4 - (s->mb_y << 6)); + s->mv[1][0][0] = av_clip(s->mv[1][0][0], -60 - (s->mb_x << 6), (s->mb_width << 6) - 4 - (s->mb_x << 6)); + s->mv[1][0][1] = av_clip(s->mv[1][0][1], -60 - (s->mb_y << 6), (s->mb_height << 6) - 4 - (s->mb_y << 6)); + if(direct) { + s->current_picture.motion_val[0][xy][0] = s->mv[0][0][0]; + s->current_picture.motion_val[0][xy][1] = s->mv[0][0][1]; + s->current_picture.motion_val[1][xy][0] = s->mv[1][0][0]; + s->current_picture.motion_val[1][xy][1] = s->mv[1][0][1]; + return; + } + + if((mvtype == BMV_TYPE_FORWARD) || (mvtype == BMV_TYPE_INTERPOLATED)) { + C = s->current_picture.motion_val[0][xy - 2]; + A = s->current_picture.motion_val[0][xy - wrap*2]; + off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2; + B = s->current_picture.motion_val[0][xy - wrap*2 + off]; + + if(!s->mb_x) C[0] = C[1] = 0; + if(!s->first_slice_line) { // predictor A is not out of bounds + if(s->mb_width == 1) { + px = A[0]; + py = A[1]; + } else { + px = mid_pred(A[0], B[0], C[0]); + py = mid_pred(A[1], B[1], C[1]); + } + } else if(s->mb_x) { // predictor C is not out of bounds + px = C[0]; + py = C[1]; + } else { + px = py = 0; + } + /* Pullback MV as specified in 8.3.5.3.4 */ + { + int qx, qy, X, Y; + if(v->profile < PROFILE_ADVANCED) { + qx = (s->mb_x << 5); + qy = (s->mb_y << 5); + X = (s->mb_width << 5) - 4; + Y = (s->mb_height << 5) - 4; + if(qx + px < -28) px = -28 - qx; + if(qy + py < -28) py = -28 - qy; + if(qx + px > X) px = X - qx; + if(qy + py > Y) py = Y - qy; + } else { + qx = (s->mb_x << 6); + qy = (s->mb_y << 6); + X = (s->mb_width << 6) - 4; + Y = (s->mb_height << 6) - 4; + if(qx + px < -60) px = -60 - qx; + if(qy + py < -60) py = -60 - qy; + if(qx + px > X) px = X - qx; + if(qy + py > Y) py = Y - qy; + } + } + /* Calculate hybrid prediction as specified in 8.3.5.3.5 */ + if(0 && !s->first_slice_line && s->mb_x) { + if(is_intra[xy - wrap]) + sum = FFABS(px) + FFABS(py); + else + sum = FFABS(px - A[0]) + FFABS(py - A[1]); + if(sum > 32) { + if(get_bits1(&s->gb)) { + px = A[0]; + py = A[1]; + } else { + px = C[0]; + py = C[1]; + } + } else { + if(is_intra[xy - 2]) + sum = FFABS(px) + FFABS(py); + else + sum = FFABS(px - C[0]) + FFABS(py - C[1]); + if(sum > 32) { + if(get_bits1(&s->gb)) { + px = A[0]; + py = A[1]; + } else { + px = C[0]; + py = C[1]; + } + } + } + } + /* store MV using signed modulus of MV range defined in 4.11 */ + s->mv[0][0][0] = ((px + dmv_x[0] + r_x) & ((r_x << 1) - 1)) - r_x; + s->mv[0][0][1] = ((py + dmv_y[0] + r_y) & ((r_y << 1) - 1)) - r_y; + } + if((mvtype == BMV_TYPE_BACKWARD) || (mvtype == BMV_TYPE_INTERPOLATED)) { + C = s->current_picture.motion_val[1][xy - 2]; + A = s->current_picture.motion_val[1][xy - wrap*2]; + off = (s->mb_x == (s->mb_width - 1)) ? -2 : 2; + B = s->current_picture.motion_val[1][xy - wrap*2 + off]; + + if(!s->mb_x) C[0] = C[1] = 0; + if(!s->first_slice_line) { // predictor A is not out of bounds + if(s->mb_width == 1) { + px = A[0]; + py = A[1]; + } else { + px = mid_pred(A[0], B[0], C[0]); + py = mid_pred(A[1], B[1], C[1]); + } + } else if(s->mb_x) { // predictor C is not out of bounds + px = C[0]; + py = C[1]; + } else { + px = py = 0; + } + /* Pullback MV as specified in 8.3.5.3.4 */ + { + int qx, qy, X, Y; + if(v->profile < PROFILE_ADVANCED) { + qx = (s->mb_x << 5); + qy = (s->mb_y << 5); + X = (s->mb_width << 5) - 4; + Y = (s->mb_height << 5) - 4; + if(qx + px < -28) px = -28 - qx; + if(qy + py < -28) py = -28 - qy; + if(qx + px > X) px = X - qx; + if(qy + py > Y) py = Y - qy; + } else { + qx = (s->mb_x << 6); + qy = (s->mb_y << 6); + X = (s->mb_width << 6) - 4; + Y = (s->mb_height << 6) - 4; + if(qx + px < -60) px = -60 - qx; + if(qy + py < -60) py = -60 - qy; + if(qx + px > X) px = X - qx; + if(qy + py > Y) py = Y - qy; + } + } + /* Calculate hybrid prediction as specified in 8.3.5.3.5 */ + if(0 && !s->first_slice_line && s->mb_x) { + if(is_intra[xy - wrap]) + sum = FFABS(px) + FFABS(py); + else + sum = FFABS(px - A[0]) + FFABS(py - A[1]); + if(sum > 32) { + if(get_bits1(&s->gb)) { + px = A[0]; + py = A[1]; + } else { + px = C[0]; + py = C[1]; + } + } else { + if(is_intra[xy - 2]) + sum = FFABS(px) + FFABS(py); + else + sum = FFABS(px - C[0]) + FFABS(py - C[1]); + if(sum > 32) { + if(get_bits1(&s->gb)) { + px = A[0]; + py = A[1]; + } else { + px = C[0]; + py = C[1]; + } + } + } + } + /* store MV using signed modulus of MV range defined in 4.11 */ + + s->mv[1][0][0] = ((px + dmv_x[1] + r_x) & ((r_x << 1) - 1)) - r_x; + s->mv[1][0][1] = ((py + dmv_y[1] + r_y) & ((r_y << 1) - 1)) - r_y; + } + s->current_picture.motion_val[0][xy][0] = s->mv[0][0][0]; + s->current_picture.motion_val[0][xy][1] = s->mv[0][0][1]; + s->current_picture.motion_val[1][xy][0] = s->mv[1][0][0]; + s->current_picture.motion_val[1][xy][1] = s->mv[1][0][1]; +} + +/** Get predicted DC value for I-frames only + * prediction dir: left=0, top=1 + * @param s MpegEncContext + * @param overlap flag indicating that overlap filtering is used + * @param pq integer part of picture quantizer + * @param[in] n block index in the current MB + * @param dc_val_ptr Pointer to DC predictor + * @param dir_ptr Prediction direction for use in AC prediction + */ +static inline int vc1_i_pred_dc(MpegEncContext *s, int overlap, int pq, int n, + int16_t **dc_val_ptr, int *dir_ptr) +{ + int a, b, c, wrap, pred, scale; + int16_t *dc_val; + static const uint16_t dcpred[32] = { + -1, 1024, 512, 341, 256, 205, 171, 146, 128, + 114, 102, 93, 85, 79, 73, 68, 64, + 60, 57, 54, 51, 49, 47, 45, 43, + 41, 39, 38, 37, 35, 34, 33 + }; + + /* find prediction - wmv3_dc_scale always used here in fact */ + if (n < 4) scale = s->y_dc_scale; + else scale = s->c_dc_scale; + + wrap = s->block_wrap[n]; + dc_val= s->dc_val[0] + s->block_index[n]; + + /* B A + * C X + */ + c = dc_val[ - 1]; + b = dc_val[ - 1 - wrap]; + a = dc_val[ - wrap]; + + if (pq < 9 || !overlap) + { + /* Set outer values */ + if (s->first_slice_line && (n!=2 && n!=3)) b=a=dcpred[scale]; + if (s->mb_x == 0 && (n!=1 && n!=3)) b=c=dcpred[scale]; + } + else + { + /* Set outer values */ + if (s->first_slice_line && (n!=2 && n!=3)) b=a=0; + if (s->mb_x == 0 && (n!=1 && n!=3)) b=c=0; + } + + if (abs(a - b) <= abs(b - c)) { + pred = c; + *dir_ptr = 1;//left + } else { + pred = a; + *dir_ptr = 0;//top + } + + /* update predictor */ + *dc_val_ptr = &dc_val[0]; + return pred; +} + + +/** Get predicted DC value + * prediction dir: left=0, top=1 + * @param s MpegEncContext + * @param overlap flag indicating that overlap filtering is used + * @param pq integer part of picture quantizer + * @param[in] n block index in the current MB + * @param a_avail flag indicating top block availability + * @param c_avail flag indicating left block availability + * @param dc_val_ptr Pointer to DC predictor + * @param dir_ptr Prediction direction for use in AC prediction + */ +static inline int vc1_pred_dc(MpegEncContext *s, int overlap, int pq, int n, + int a_avail, int c_avail, + int16_t **dc_val_ptr, int *dir_ptr) +{ + int a, b, c, wrap, pred; + int16_t *dc_val; + int mb_pos = s->mb_x + s->mb_y * s->mb_stride; + int q1, q2 = 0; + + wrap = s->block_wrap[n]; + dc_val= s->dc_val[0] + s->block_index[n]; + + /* B A + * C X + */ + c = dc_val[ - 1]; + b = dc_val[ - 1 - wrap]; + a = dc_val[ - wrap]; + /* scale predictors if needed */ + q1 = s->current_picture.qscale_table[mb_pos]; + if(c_avail && (n!= 1 && n!=3)) { + q2 = s->current_picture.qscale_table[mb_pos - 1]; + if(q2 && q2 != q1) + c = (c * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18; + } + if(a_avail && (n!= 2 && n!=3)) { + q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride]; + if(q2 && q2 != q1) + a = (a * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18; + } + if(a_avail && c_avail && (n!=3)) { + int off = mb_pos; + if(n != 1) off--; + if(n != 2) off -= s->mb_stride; + q2 = s->current_picture.qscale_table[off]; + if(q2 && q2 != q1) + b = (b * s->y_dc_scale_table[q2] * ff_vc1_dqscale[s->y_dc_scale_table[q1] - 1] + 0x20000) >> 18; + } + + if(a_avail && c_avail) { + if(abs(a - b) <= abs(b - c)) { + pred = c; + *dir_ptr = 1;//left + } else { + pred = a; + *dir_ptr = 0;//top + } + } else if(a_avail) { + pred = a; + *dir_ptr = 0;//top + } else if(c_avail) { + pred = c; + *dir_ptr = 1;//left + } else { + pred = 0; + *dir_ptr = 1;//left + } + + /* update predictor */ + *dc_val_ptr = &dc_val[0]; + return pred; +} + +/** @} */ // Block group + +/** + * @defgroup vc1_std_mb VC1 Macroblock-level functions in Simple/Main Profiles + * @see 7.1.4, p91 and 8.1.1.7, p(1)04 + * @{ + */ + +static inline int vc1_coded_block_pred(MpegEncContext * s, int n, uint8_t **coded_block_ptr) +{ + int xy, wrap, pred, a, b, c; + + xy = s->block_index[n]; + wrap = s->b8_stride; + + /* B C + * A X + */ + a = s->coded_block[xy - 1 ]; + b = s->coded_block[xy - 1 - wrap]; + c = s->coded_block[xy - wrap]; + + if (b == c) { + pred = a; + } else { + pred = c; + } + + /* store value */ + *coded_block_ptr = &s->coded_block[xy]; + + return pred; +} + +/** + * Decode one AC coefficient + * @param v The VC1 context + * @param last Last coefficient + * @param skip How much zero coefficients to skip + * @param value Decoded AC coefficient value + * @param codingset set of VLC to decode data + * @see 8.1.3.4 + */ +static void vc1_decode_ac_coeff(VC1Context *v, int *last, int *skip, int *value, int codingset) +{ + GetBitContext *gb = &v->s.gb; + int index, escape, run = 0, level = 0, lst = 0; + + index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3); + if (index != vc1_ac_sizes[codingset] - 1) { + run = vc1_index_decode_table[codingset][index][0]; + level = vc1_index_decode_table[codingset][index][1]; + lst = index >= vc1_last_decode_table[codingset]; + if(get_bits1(gb)) + level = -level; + } else { + escape = decode210(gb); + if (escape != 2) { + index = get_vlc2(gb, ff_vc1_ac_coeff_table[codingset].table, AC_VLC_BITS, 3); + run = vc1_index_decode_table[codingset][index][0]; + level = vc1_index_decode_table[codingset][index][1]; + lst = index >= vc1_last_decode_table[codingset]; + if(escape == 0) { + if(lst) + level += vc1_last_delta_level_table[codingset][run]; + else + level += vc1_delta_level_table[codingset][run]; + } else { + if(lst) + run += vc1_last_delta_run_table[codingset][level] + 1; + else + run += vc1_delta_run_table[codingset][level] + 1; + } + if(get_bits1(gb)) + level = -level; + } else { + int sign; + lst = get_bits1(gb); + if(v->s.esc3_level_length == 0) { + if(v->pq < 8 || v->dquantfrm) { // table 59 + v->s.esc3_level_length = get_bits(gb, 3); + if(!v->s.esc3_level_length) + v->s.esc3_level_length = get_bits(gb, 2) + 8; + } else { //table 60 + v->s.esc3_level_length = get_unary(gb, 1, 6) + 2; + } + v->s.esc3_run_length = 3 + get_bits(gb, 2); + } + run = get_bits(gb, v->s.esc3_run_length); + sign = get_bits1(gb); + level = get_bits(gb, v->s.esc3_level_length); + if(sign) + level = -level; + } + } + + *last = lst; + *skip = run; + *value = level; +} + +/** Decode intra block in intra frames - should be faster than decode_intra_block + * @param v VC1Context + * @param block block to decode + * @param[in] n subblock index + * @param coded are AC coeffs present or not + * @param codingset set of VLC to decode data + */ +static int vc1_decode_i_block(VC1Context *v, DCTELEM block[64], int n, int coded, int codingset) +{ + GetBitContext *gb = &v->s.gb; + MpegEncContext *s = &v->s; + int dc_pred_dir = 0; /* Direction of the DC prediction used */ + int i; + int16_t *dc_val; + int16_t *ac_val, *ac_val2; + int dcdiff; + + /* Get DC differential */ + if (n < 4) { + dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3); + } else { + dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3); + } + if (dcdiff < 0){ + av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n"); + return -1; + } + if (dcdiff) + { + if (dcdiff == 119 /* ESC index value */) + { + /* TODO: Optimize */ + if (v->pq == 1) dcdiff = get_bits(gb, 10); + else if (v->pq == 2) dcdiff = get_bits(gb, 9); + else dcdiff = get_bits(gb, 8); + } + else + { + if (v->pq == 1) + dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3; + else if (v->pq == 2) + dcdiff = (dcdiff<<1) + get_bits1(gb) - 1; + } + if (get_bits1(gb)) + dcdiff = -dcdiff; + } + + /* Prediction */ + dcdiff += vc1_i_pred_dc(&v->s, v->overlap, v->pq, n, &dc_val, &dc_pred_dir); + *dc_val = dcdiff; + + /* Store the quantized DC coeff, used for prediction */ + if (n < 4) { + block[0] = dcdiff * s->y_dc_scale; + } else { + block[0] = dcdiff * s->c_dc_scale; + } + /* Skip ? */ + if (!coded) { + goto not_coded; + } + + //AC Decoding + i = 1; + + { + int last = 0, skip, value; + const int8_t *zz_table; + int scale; + int k; + + scale = v->pq * 2 + v->halfpq; + + if(v->s.ac_pred) { + if(!dc_pred_dir) + zz_table = wmv1_scantable[2]; + else + zz_table = wmv1_scantable[3]; + } else + zz_table = wmv1_scantable[1]; + + ac_val = s->ac_val[0][0] + s->block_index[n] * 16; + ac_val2 = ac_val; + if(dc_pred_dir) //left + ac_val -= 16; + else //top + ac_val -= 16 * s->block_wrap[n]; + + while (!last) { + vc1_decode_ac_coeff(v, &last, &skip, &value, codingset); + i += skip; + if(i > 63) + break; + block[zz_table[i++]] = value; + } + + /* apply AC prediction if needed */ + if(s->ac_pred) { + if(dc_pred_dir) { //left + for(k = 1; k < 8; k++) + block[k << 3] += ac_val[k]; + } else { //top + for(k = 1; k < 8; k++) + block[k] += ac_val[k + 8]; + } + } + /* save AC coeffs for further prediction */ + for(k = 1; k < 8; k++) { + ac_val2[k] = block[k << 3]; + ac_val2[k + 8] = block[k]; + } + + /* scale AC coeffs */ + for(k = 1; k < 64; k++) + if(block[k]) { + block[k] *= scale; + if(!v->pquantizer) + block[k] += (block[k] < 0) ? -v->pq : v->pq; + } + + if(s->ac_pred) i = 63; + } + +not_coded: + if(!coded) { + int k, scale; + ac_val = s->ac_val[0][0] + s->block_index[n] * 16; + ac_val2 = ac_val; + + i = 0; + scale = v->pq * 2 + v->halfpq; + memset(ac_val2, 0, 16 * 2); + if(dc_pred_dir) {//left + ac_val -= 16; + if(s->ac_pred) + memcpy(ac_val2, ac_val, 8 * 2); + } else {//top + ac_val -= 16 * s->block_wrap[n]; + if(s->ac_pred) + memcpy(ac_val2 + 8, ac_val + 8, 8 * 2); + } + + /* apply AC prediction if needed */ + if(s->ac_pred) { + if(dc_pred_dir) { //left + for(k = 1; k < 8; k++) { + block[k << 3] = ac_val[k] * scale; + if(!v->pquantizer && block[k << 3]) + block[k << 3] += (block[k << 3] < 0) ? -v->pq : v->pq; + } + } else { //top + for(k = 1; k < 8; k++) { + block[k] = ac_val[k + 8] * scale; + if(!v->pquantizer && block[k]) + block[k] += (block[k] < 0) ? -v->pq : v->pq; + } + } + i = 63; + } + } + s->block_last_index[n] = i; + + return 0; +} + +/** Decode intra block in intra frames - should be faster than decode_intra_block + * @param v VC1Context + * @param block block to decode + * @param[in] n subblock number + * @param coded are AC coeffs present or not + * @param codingset set of VLC to decode data + * @param mquant quantizer value for this macroblock + */ +static int vc1_decode_i_block_adv(VC1Context *v, DCTELEM block[64], int n, int coded, int codingset, int mquant) +{ + GetBitContext *gb = &v->s.gb; + MpegEncContext *s = &v->s; + int dc_pred_dir = 0; /* Direction of the DC prediction used */ + int i; + int16_t *dc_val; + int16_t *ac_val, *ac_val2; + int dcdiff; + int a_avail = v->a_avail, c_avail = v->c_avail; + int use_pred = s->ac_pred; + int scale; + int q1, q2 = 0; + int mb_pos = s->mb_x + s->mb_y * s->mb_stride; + + /* Get DC differential */ + if (n < 4) { + dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3); + } else { + dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3); + } + if (dcdiff < 0){ + av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n"); + return -1; + } + if (dcdiff) + { + if (dcdiff == 119 /* ESC index value */) + { + /* TODO: Optimize */ + if (mquant == 1) dcdiff = get_bits(gb, 10); + else if (mquant == 2) dcdiff = get_bits(gb, 9); + else dcdiff = get_bits(gb, 8); + } + else + { + if (mquant == 1) + dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3; + else if (mquant == 2) + dcdiff = (dcdiff<<1) + get_bits1(gb) - 1; + } + if (get_bits1(gb)) + dcdiff = -dcdiff; + } + + /* Prediction */ + dcdiff += vc1_pred_dc(&v->s, v->overlap, mquant, n, v->a_avail, v->c_avail, &dc_val, &dc_pred_dir); + *dc_val = dcdiff; + + /* Store the quantized DC coeff, used for prediction */ + if (n < 4) { + block[0] = dcdiff * s->y_dc_scale; + } else { + block[0] = dcdiff * s->c_dc_scale; + } + + //AC Decoding + i = 1; + + /* check if AC is needed at all */ + if(!a_avail && !c_avail) use_pred = 0; + ac_val = s->ac_val[0][0] + s->block_index[n] * 16; + ac_val2 = ac_val; + + scale = mquant * 2 + ((mquant == v->pq) ? v->halfpq : 0); + + if(dc_pred_dir) //left + ac_val -= 16; + else //top + ac_val -= 16 * s->block_wrap[n]; + + q1 = s->current_picture.qscale_table[mb_pos]; + if(dc_pred_dir && c_avail && mb_pos) q2 = s->current_picture.qscale_table[mb_pos - 1]; + if(!dc_pred_dir && a_avail && mb_pos >= s->mb_stride) q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride]; + if(dc_pred_dir && n==1) q2 = q1; + if(!dc_pred_dir && n==2) q2 = q1; + if(n==3) q2 = q1; + + if(coded) { + int last = 0, skip, value; + const int8_t *zz_table; + int k; + + if(v->s.ac_pred) { + if(!dc_pred_dir) + zz_table = wmv1_scantable[2]; + else + zz_table = wmv1_scantable[3]; + } else + zz_table = wmv1_scantable[1]; + + while (!last) { + vc1_decode_ac_coeff(v, &last, &skip, &value, codingset); + i += skip; + if(i > 63) + break; + block[zz_table[i++]] = value; + } + + /* apply AC prediction if needed */ + if(use_pred) { + /* scale predictors if needed*/ + if(q2 && q1!=q2) { + q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1; + q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1; + + if(dc_pred_dir) { //left + for(k = 1; k < 8; k++) + block[k << 3] += (ac_val[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18; + } else { //top + for(k = 1; k < 8; k++) + block[k] += (ac_val[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18; + } + } else { + if(dc_pred_dir) { //left + for(k = 1; k < 8; k++) + block[k << 3] += ac_val[k]; + } else { //top + for(k = 1; k < 8; k++) + block[k] += ac_val[k + 8]; + } + } + } + /* save AC coeffs for further prediction */ + for(k = 1; k < 8; k++) { + ac_val2[k] = block[k << 3]; + ac_val2[k + 8] = block[k]; + } + + /* scale AC coeffs */ + for(k = 1; k < 64; k++) + if(block[k]) { + block[k] *= scale; + if(!v->pquantizer) + block[k] += (block[k] < 0) ? -mquant : mquant; + } + + if(use_pred) i = 63; + } else { // no AC coeffs + int k; + + memset(ac_val2, 0, 16 * 2); + if(dc_pred_dir) {//left + if(use_pred) { + memcpy(ac_val2, ac_val, 8 * 2); + if(q2 && q1!=q2) { + q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1; + q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1; + for(k = 1; k < 8; k++) + ac_val2[k] = (ac_val2[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18; + } + } + } else {//top + if(use_pred) { + memcpy(ac_val2 + 8, ac_val + 8, 8 * 2); + if(q2 && q1!=q2) { + q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1; + q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1; + for(k = 1; k < 8; k++) + ac_val2[k + 8] = (ac_val2[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18; + } + } + } + + /* apply AC prediction if needed */ + if(use_pred) { + if(dc_pred_dir) { //left + for(k = 1; k < 8; k++) { + block[k << 3] = ac_val2[k] * scale; + if(!v->pquantizer && block[k << 3]) + block[k << 3] += (block[k << 3] < 0) ? -mquant : mquant; + } + } else { //top + for(k = 1; k < 8; k++) { + block[k] = ac_val2[k + 8] * scale; + if(!v->pquantizer && block[k]) + block[k] += (block[k] < 0) ? -mquant : mquant; + } + } + i = 63; + } + } + s->block_last_index[n] = i; + + return 0; +} + +/** Decode intra block in inter frames - more generic version than vc1_decode_i_block + * @param v VC1Context + * @param block block to decode + * @param[in] n subblock index + * @param coded are AC coeffs present or not + * @param mquant block quantizer + * @param codingset set of VLC to decode data + */ +static int vc1_decode_intra_block(VC1Context *v, DCTELEM block[64], int n, int coded, int mquant, int codingset) +{ + GetBitContext *gb = &v->s.gb; + MpegEncContext *s = &v->s; + int dc_pred_dir = 0; /* Direction of the DC prediction used */ + int i; + int16_t *dc_val; + int16_t *ac_val, *ac_val2; + int dcdiff; + int mb_pos = s->mb_x + s->mb_y * s->mb_stride; + int a_avail = v->a_avail, c_avail = v->c_avail; + int use_pred = s->ac_pred; + int scale; + int q1, q2 = 0; + + /* XXX: Guard against dumb values of mquant */ + mquant = (mquant < 1) ? 0 : ( (mquant>31) ? 31 : mquant ); + + /* Set DC scale - y and c use the same */ + s->y_dc_scale = s->y_dc_scale_table[mquant]; + s->c_dc_scale = s->c_dc_scale_table[mquant]; + + /* Get DC differential */ + if (n < 4) { + dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_luma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3); + } else { + dcdiff = get_vlc2(&s->gb, ff_msmp4_dc_chroma_vlc[s->dc_table_index].table, DC_VLC_BITS, 3); + } + if (dcdiff < 0){ + av_log(s->avctx, AV_LOG_ERROR, "Illegal DC VLC\n"); + return -1; + } + if (dcdiff) + { + if (dcdiff == 119 /* ESC index value */) + { + /* TODO: Optimize */ + if (mquant == 1) dcdiff = get_bits(gb, 10); + else if (mquant == 2) dcdiff = get_bits(gb, 9); + else dcdiff = get_bits(gb, 8); + } + else + { + if (mquant == 1) + dcdiff = (dcdiff<<2) + get_bits(gb, 2) - 3; + else if (mquant == 2) + dcdiff = (dcdiff<<1) + get_bits1(gb) - 1; + } + if (get_bits1(gb)) + dcdiff = -dcdiff; + } + + /* Prediction */ + dcdiff += vc1_pred_dc(&v->s, v->overlap, mquant, n, a_avail, c_avail, &dc_val, &dc_pred_dir); + *dc_val = dcdiff; + + /* Store the quantized DC coeff, used for prediction */ + + if (n < 4) { + block[0] = dcdiff * s->y_dc_scale; + } else { + block[0] = dcdiff * s->c_dc_scale; + } + + //AC Decoding + i = 1; + + /* check if AC is needed at all and adjust direction if needed */ + if(!a_avail) dc_pred_dir = 1; + if(!c_avail) dc_pred_dir = 0; + if(!a_avail && !c_avail) use_pred = 0; + ac_val = s->ac_val[0][0] + s->block_index[n] * 16; + ac_val2 = ac_val; + + scale = mquant * 2 + v->halfpq; + + if(dc_pred_dir) //left + ac_val -= 16; + else //top + ac_val -= 16 * s->block_wrap[n]; + + q1 = s->current_picture.qscale_table[mb_pos]; + if(dc_pred_dir && c_avail && mb_pos) q2 = s->current_picture.qscale_table[mb_pos - 1]; + if(!dc_pred_dir && a_avail && mb_pos >= s->mb_stride) q2 = s->current_picture.qscale_table[mb_pos - s->mb_stride]; + if(dc_pred_dir && n==1) q2 = q1; + if(!dc_pred_dir && n==2) q2 = q1; + if(n==3) q2 = q1; + + if(coded) { + int last = 0, skip, value; + const int8_t *zz_table; + int k; + + zz_table = wmv1_scantable[0]; + + while (!last) { + vc1_decode_ac_coeff(v, &last, &skip, &value, codingset); + i += skip; + if(i > 63) + break; + block[zz_table[i++]] = value; + } + + /* apply AC prediction if needed */ + if(use_pred) { + /* scale predictors if needed*/ + if(q2 && q1!=q2) { + q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1; + q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1; + + if(dc_pred_dir) { //left + for(k = 1; k < 8; k++) + block[k << 3] += (ac_val[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18; + } else { //top + for(k = 1; k < 8; k++) + block[k] += (ac_val[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18; + } + } else { + if(dc_pred_dir) { //left + for(k = 1; k < 8; k++) + block[k << 3] += ac_val[k]; + } else { //top + for(k = 1; k < 8; k++) + block[k] += ac_val[k + 8]; + } + } + } + /* save AC coeffs for further prediction */ + for(k = 1; k < 8; k++) { + ac_val2[k] = block[k << 3]; + ac_val2[k + 8] = block[k]; + } + + /* scale AC coeffs */ + for(k = 1; k < 64; k++) + if(block[k]) { + block[k] *= scale; + if(!v->pquantizer) + block[k] += (block[k] < 0) ? -mquant : mquant; + } + + if(use_pred) i = 63; + } else { // no AC coeffs + int k; + + memset(ac_val2, 0, 16 * 2); + if(dc_pred_dir) {//left + if(use_pred) { + memcpy(ac_val2, ac_val, 8 * 2); + if(q2 && q1!=q2) { + q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1; + q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1; + for(k = 1; k < 8; k++) + ac_val2[k] = (ac_val2[k] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18; + } + } + } else {//top + if(use_pred) { + memcpy(ac_val2 + 8, ac_val + 8, 8 * 2); + if(q2 && q1!=q2) { + q1 = q1 * 2 + ((q1 == v->pq) ? v->halfpq : 0) - 1; + q2 = q2 * 2 + ((q2 == v->pq) ? v->halfpq : 0) - 1; + for(k = 1; k < 8; k++) + ac_val2[k + 8] = (ac_val2[k + 8] * q2 * ff_vc1_dqscale[q1 - 1] + 0x20000) >> 18; + } + } + } + + /* apply AC prediction if needed */ + if(use_pred) { + if(dc_pred_dir) { //left + for(k = 1; k < 8; k++) { + block[k << 3] = ac_val2[k] * scale; + if(!v->pquantizer && block[k << 3]) + block[k << 3] += (block[k << 3] < 0) ? -mquant : mquant; + } + } else { //top + for(k = 1; k < 8; k++) { + block[k] = ac_val2[k + 8] * scale; + if(!v->pquantizer && block[k]) + block[k] += (block[k] < 0) ? -mquant : mquant; + } + } + i = 63; + } + } + s->block_last_index[n] = i; + + return 0; +} + +/** Decode P block + */ +static int vc1_decode_p_block(VC1Context *v, DCTELEM block[64], int n, int mquant, int ttmb, int first_block, + uint8_t *dst, int linesize, int skip_block, int apply_filter, int cbp_top, int cbp_left) +{ + MpegEncContext *s = &v->s; + GetBitContext *gb = &s->gb; + int i, j; + int subblkpat = 0; + int scale, off, idx, last, skip, value; + int ttblk = ttmb & 7; + int pat = 0; + + if(ttmb == -1) { + ttblk = ff_vc1_ttblk_to_tt[v->tt_index][get_vlc2(gb, ff_vc1_ttblk_vlc[v->tt_index].table, VC1_TTBLK_VLC_BITS, 1)]; + } + if(ttblk == TT_4X4) { + subblkpat = ~(get_vlc2(gb, ff_vc1_subblkpat_vlc[v->tt_index].table, VC1_SUBBLKPAT_VLC_BITS, 1) + 1); + } + if((ttblk != TT_8X8 && ttblk != TT_4X4) && (v->ttmbf || (ttmb != -1 && (ttmb & 8) && !first_block))) { + subblkpat = decode012(gb); + if(subblkpat) subblkpat ^= 3; //swap decoded pattern bits + if(ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) ttblk = TT_8X4; + if(ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) ttblk = TT_4X8; + } + scale = 2 * mquant + ((v->pq == mquant) ? v->halfpq : 0); + + // convert transforms like 8X4_TOP to generic TT and SUBBLKPAT + if(ttblk == TT_8X4_TOP || ttblk == TT_8X4_BOTTOM) { + subblkpat = 2 - (ttblk == TT_8X4_TOP); + ttblk = TT_8X4; + } + if(ttblk == TT_4X8_RIGHT || ttblk == TT_4X8_LEFT) { + subblkpat = 2 - (ttblk == TT_4X8_LEFT); + ttblk = TT_4X8; + } + switch(ttblk) { + case TT_8X8: + pat = 0xF; + i = 0; + last = 0; + while (!last) { + vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2); + i += skip; + if(i > 63) + break; + idx = wmv1_scantable[0][i++]; + block[idx] = value * scale; + if(!v->pquantizer) + block[idx] += (block[idx] < 0) ? -mquant : mquant; + } + if(!skip_block){ + s->dsp.vc1_inv_trans_8x8(block); + s->dsp.add_pixels_clamped(block, dst, linesize); + if(apply_filter && cbp_top & 0xC) + s->dsp.vc1_v_loop_filter8(dst, linesize, v->pq); + if(apply_filter && cbp_left & 0xA) + s->dsp.vc1_h_loop_filter8(dst, linesize, v->pq); + } + break; + case TT_4X4: + pat = ~subblkpat & 0xF; + for(j = 0; j < 4; j++) { + last = subblkpat & (1 << (3 - j)); + i = 0; + off = (j & 1) * 4 + (j & 2) * 16; + while (!last) { + vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2); + i += skip; + if(i > 15) + break; + idx = ff_vc1_simple_progressive_4x4_zz[i++]; + block[idx + off] = value * scale; + if(!v->pquantizer) + block[idx + off] += (block[idx + off] < 0) ? -mquant : mquant; + } + if(!(subblkpat & (1 << (3 - j))) && !skip_block){ + s->dsp.vc1_inv_trans_4x4(dst + (j&1)*4 + (j&2)*2*linesize, linesize, block + off); + if(apply_filter && (j&2 ? pat & (1<<(j-2)) : (cbp_top & (1 << (j + 2))))) + s->dsp.vc1_v_loop_filter4(dst + (j&1)*4 + (j&2)*2*linesize, linesize, v->pq); + if(apply_filter && (j&1 ? pat & (1<<(j-1)) : (cbp_left & (1 << (j + 1))))) + s->dsp.vc1_h_loop_filter4(dst + (j&1)*4 + (j&2)*2*linesize, linesize, v->pq); + } + } + break; + case TT_8X4: + pat = ~((subblkpat & 2)*6 + (subblkpat & 1)*3) & 0xF; + for(j = 0; j < 2; j++) { + last = subblkpat & (1 << (1 - j)); + i = 0; + off = j * 32; + while (!last) { + vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2); + i += skip; + if(i > 31) + break; + idx = v->zz_8x4[i++]+off; + block[idx] = value * scale; + if(!v->pquantizer) + block[idx] += (block[idx] < 0) ? -mquant : mquant; + } + if(!(subblkpat & (1 << (1 - j))) && !skip_block){ + s->dsp.vc1_inv_trans_8x4(dst + j*4*linesize, linesize, block + off); + if(apply_filter && j ? pat & 0x3 : (cbp_top & 0xC)) + s->dsp.vc1_v_loop_filter8(dst + j*4*linesize, linesize, v->pq); + if(apply_filter && cbp_left & (2 << j)) + s->dsp.vc1_h_loop_filter4(dst + j*4*linesize, linesize, v->pq); + } + } + break; + case TT_4X8: + pat = ~(subblkpat*5) & 0xF; + for(j = 0; j < 2; j++) { + last = subblkpat & (1 << (1 - j)); + i = 0; + off = j * 4; + while (!last) { + vc1_decode_ac_coeff(v, &last, &skip, &value, v->codingset2); + i += skip; + if(i > 31) + break; + idx = v->zz_4x8[i++]+off; + block[idx] = value * scale; + if(!v->pquantizer) + block[idx] += (block[idx] < 0) ? -mquant : mquant; + } + if(!(subblkpat & (1 << (1 - j))) && !skip_block){ + s->dsp.vc1_inv_trans_4x8(dst + j*4, linesize, block + off); + if(apply_filter && cbp_top & (2 << j)) + s->dsp.vc1_v_loop_filter4(dst + j*4, linesize, v->pq); + if(apply_filter && j ? pat & 0x5 : (cbp_left & 0xA)) + s->dsp.vc1_h_loop_filter8(dst + j*4, linesize, v->pq); + } + } + break; + } + return pat; +} + +/** @} */ // Macroblock group + +static const int size_table [6] = { 0, 2, 3, 4, 5, 8 }; +static const int offset_table[6] = { 0, 1, 3, 7, 15, 31 }; + +/** Decode one P-frame MB (in Simple/Main profile) + */ +static int vc1_decode_p_mb(VC1Context *v) +{ + MpegEncContext *s = &v->s; + GetBitContext *gb = &s->gb; + int i, j; + int mb_pos = s->mb_x + s->mb_y * s->mb_stride; + int cbp; /* cbp decoding stuff */ + int mqdiff, mquant; /* MB quantization */ + int ttmb = v->ttfrm; /* MB Transform type */ + + int mb_has_coeffs = 1; /* last_flag */ + int dmv_x, dmv_y; /* Differential MV components */ + int index, index1; /* LUT indexes */ + int val, sign; /* temp values */ + int first_block = 1; + int dst_idx, off; + int skipped, fourmv; + int block_cbp = 0, pat; + int apply_loop_filter; + + mquant = v->pq; /* Loosy initialization */ + + if (v->mv_type_is_raw) + fourmv = get_bits1(gb); + else + fourmv = v->mv_type_mb_plane[mb_pos]; + if (v->skip_is_raw) + skipped = get_bits1(gb); + else + skipped = v->s.mbskip_table[mb_pos]; + + s->dsp.clear_blocks(s->block[0]); + + apply_loop_filter = s->loop_filter && !(s->avctx->skip_loop_filter >= AVDISCARD_NONKEY); + if (!fourmv) /* 1MV mode */ + { + if (!skipped) + { + GET_MVDATA(dmv_x, dmv_y); + + if (s->mb_intra) { + s->current_picture.motion_val[1][s->block_index[0]][0] = 0; + s->current_picture.motion_val[1][s->block_index[0]][1] = 0; + } + s->current_picture.mb_type[mb_pos] = s->mb_intra ? MB_TYPE_INTRA : MB_TYPE_16x16; + vc1_pred_mv(s, 0, dmv_x, dmv_y, 1, v->range_x, v->range_y, v->mb_type[0]); + + /* FIXME Set DC val for inter block ? */ + if (s->mb_intra && !mb_has_coeffs) + { + GET_MQUANT(); + s->ac_pred = get_bits1(gb); + cbp = 0; + } + else if (mb_has_coeffs) + { + if (s->mb_intra) s->ac_pred = get_bits1(gb); + cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2); + GET_MQUANT(); + } + else + { + mquant = v->pq; + cbp = 0; + } + s->current_picture.qscale_table[mb_pos] = mquant; + + if (!v->ttmbf && !s->mb_intra && mb_has_coeffs) + ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, + VC1_TTMB_VLC_BITS, 2); + if(!s->mb_intra) vc1_mc_1mv(v, 0); + dst_idx = 0; + for (i=0; i<6; i++) + { + s->dc_val[0][s->block_index[i]] = 0; + dst_idx += i >> 2; + val = ((cbp >> (5 - i)) & 1); + off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize); + v->mb_type[0][s->block_index[i]] = s->mb_intra; + if(s->mb_intra) { + /* check if prediction blocks A and C are available */ + v->a_avail = v->c_avail = 0; + if(i == 2 || i == 3 || !s->first_slice_line) + v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]]; + if(i == 1 || i == 3 || s->mb_x) + v->c_avail = v->mb_type[0][s->block_index[i] - 1]; + + vc1_decode_intra_block(v, s->block[i], i, val, mquant, (i&4)?v->codingset2:v->codingset); + if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue; + s->dsp.vc1_inv_trans_8x8(s->block[i]); + if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1; + s->dsp.put_signed_pixels_clamped(s->block[i], s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2)); + if(v->pq >= 9 && v->overlap) { + if(v->c_avail) + s->dsp.vc1_h_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2)); + if(v->a_avail) + s->dsp.vc1_v_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2)); + } + if(apply_loop_filter && s->mb_x && s->mb_x != (s->mb_width - 1) && s->mb_y && s->mb_y != (s->mb_height - 1)){ + int left_cbp, top_cbp; + if(i & 4){ + left_cbp = v->cbp[s->mb_x - 1] >> (i * 4); + top_cbp = v->cbp[s->mb_x - s->mb_stride] >> (i * 4); + }else{ + left_cbp = (i & 1) ? (cbp >> ((i-1)*4)) : (v->cbp[s->mb_x - 1] >> ((i+1)*4)); + top_cbp = (i & 2) ? (cbp >> ((i-2)*4)) : (v->cbp[s->mb_x - s->mb_stride] >> ((i+2)*4)); + } + if(left_cbp & 0xC) + s->dsp.vc1_v_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq); + if(top_cbp & 0xA) + s->dsp.vc1_h_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq); + } + block_cbp |= 0xF << (i << 2); + } else if(val) { + int left_cbp = 0, top_cbp = 0, filter = 0; + if(apply_loop_filter && s->mb_x && s->mb_x != (s->mb_width - 1) && s->mb_y && s->mb_y != (s->mb_height - 1)){ + filter = 1; + if(i & 4){ + left_cbp = v->cbp[s->mb_x - 1] >> (i * 4); + top_cbp = v->cbp[s->mb_x - s->mb_stride] >> (i * 4); + }else{ + left_cbp = (i & 1) ? (cbp >> ((i-1)*4)) : (v->cbp[s->mb_x - 1] >> ((i+1)*4)); + top_cbp = (i & 2) ? (cbp >> ((i-2)*4)) : (v->cbp[s->mb_x - s->mb_stride] >> ((i+2)*4)); + } + if(left_cbp & 0xC) + s->dsp.vc1_v_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq); + if(top_cbp & 0xA) + s->dsp.vc1_h_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq); + } + pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block, s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize, (i&4) && (s->flags & CODEC_FLAG_GRAY), filter, left_cbp, top_cbp); + block_cbp |= pat << (i << 2); + if(!v->ttmbf && ttmb < 8) ttmb = -1; + first_block = 0; + } + } + } + else //Skipped + { + s->mb_intra = 0; + for(i = 0; i < 6; i++) { + v->mb_type[0][s->block_index[i]] = 0; + s->dc_val[0][s->block_index[i]] = 0; + } + s->current_picture.mb_type[mb_pos] = MB_TYPE_SKIP; + s->current_picture.qscale_table[mb_pos] = 0; + vc1_pred_mv(s, 0, 0, 0, 1, v->range_x, v->range_y, v->mb_type[0]); + vc1_mc_1mv(v, 0); + return 0; + } + } //1MV mode + else //4MV mode + { + if (!skipped /* unskipped MB */) + { + int intra_count = 0, coded_inter = 0; + int is_intra[6], is_coded[6]; + /* Get CBPCY */ + cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2); + for (i=0; i<6; i++) + { + val = ((cbp >> (5 - i)) & 1); + s->dc_val[0][s->block_index[i]] = 0; + s->mb_intra = 0; + if(i < 4) { + dmv_x = dmv_y = 0; + s->mb_intra = 0; + mb_has_coeffs = 0; + if(val) { + GET_MVDATA(dmv_x, dmv_y); + } + vc1_pred_mv(s, i, dmv_x, dmv_y, 0, v->range_x, v->range_y, v->mb_type[0]); + if(!s->mb_intra) vc1_mc_4mv_luma(v, i); + intra_count += s->mb_intra; + is_intra[i] = s->mb_intra; + is_coded[i] = mb_has_coeffs; + } + if(i&4){ + is_intra[i] = (intra_count >= 3); + is_coded[i] = val; + } + if(i == 4) vc1_mc_4mv_chroma(v); + v->mb_type[0][s->block_index[i]] = is_intra[i]; + if(!coded_inter) coded_inter = !is_intra[i] & is_coded[i]; + } + // if there are no coded blocks then don't do anything more + if(!intra_count && !coded_inter) return 0; + dst_idx = 0; + GET_MQUANT(); + s->current_picture.qscale_table[mb_pos] = mquant; + /* test if block is intra and has pred */ + { + int intrapred = 0; + for(i=0; i<6; i++) + if(is_intra[i]) { + if(((!s->first_slice_line || (i==2 || i==3)) && v->mb_type[0][s->block_index[i] - s->block_wrap[i]]) + || ((s->mb_x || (i==1 || i==3)) && v->mb_type[0][s->block_index[i] - 1])) { + intrapred = 1; + break; + } + } + if(intrapred)s->ac_pred = get_bits1(gb); + else s->ac_pred = 0; + } + if (!v->ttmbf && coded_inter) + ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2); + for (i=0; i<6; i++) + { + dst_idx += i >> 2; + off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize); + s->mb_intra = is_intra[i]; + if (is_intra[i]) { + /* check if prediction blocks A and C are available */ + v->a_avail = v->c_avail = 0; + if(i == 2 || i == 3 || !s->first_slice_line) + v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]]; + if(i == 1 || i == 3 || s->mb_x) + v->c_avail = v->mb_type[0][s->block_index[i] - 1]; + + vc1_decode_intra_block(v, s->block[i], i, is_coded[i], mquant, (i&4)?v->codingset2:v->codingset); + if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue; + s->dsp.vc1_inv_trans_8x8(s->block[i]); + if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1; + s->dsp.put_signed_pixels_clamped(s->block[i], s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize); + if(v->pq >= 9 && v->overlap) { + if(v->c_avail) + s->dsp.vc1_h_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2)); + if(v->a_avail) + s->dsp.vc1_v_overlap(s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2)); + } + if(v->s.loop_filter && s->mb_x && s->mb_x != (s->mb_width - 1) && s->mb_y && s->mb_y != (s->mb_height - 1)){ + int left_cbp, top_cbp; + if(i & 4){ + left_cbp = v->cbp[s->mb_x - 1] >> (i * 4); + top_cbp = v->cbp[s->mb_x - s->mb_stride] >> (i * 4); + }else{ + left_cbp = (i & 1) ? (cbp >> ((i-1)*4)) : (v->cbp[s->mb_x - 1] >> ((i+1)*4)); + top_cbp = (i & 2) ? (cbp >> ((i-2)*4)) : (v->cbp[s->mb_x - s->mb_stride] >> ((i+2)*4)); + } + if(left_cbp & 0xC) + s->dsp.vc1_v_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq); + if(top_cbp & 0xA) + s->dsp.vc1_h_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq); + } + block_cbp |= 0xF << (i << 2); + } else if(is_coded[i]) { + int left_cbp = 0, top_cbp = 0, filter = 0; + if(v->s.loop_filter && s->mb_x && s->mb_x != (s->mb_width - 1) && s->mb_y && s->mb_y != (s->mb_height - 1)){ + filter = 1; + if(i & 4){ + left_cbp = v->cbp[s->mb_x - 1] >> (i * 4); + top_cbp = v->cbp[s->mb_x - s->mb_stride] >> (i * 4); + }else{ + left_cbp = (i & 1) ? (cbp >> ((i-1)*4)) : (v->cbp[s->mb_x - 1] >> ((i+1)*4)); + top_cbp = (i & 2) ? (cbp >> ((i-2)*4)) : (v->cbp[s->mb_x - s->mb_stride] >> ((i+2)*4)); + } + if(left_cbp & 0xC) + s->dsp.vc1_v_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq); + if(top_cbp & 0xA) + s->dsp.vc1_h_loop_filter8(s->dest[dst_idx] + off, i & 4 ? s->uvlinesize : s->linesize, v->pq); + } + pat = vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block, s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize, (i&4) && (s->flags & CODEC_FLAG_GRAY), filter, left_cbp, top_cbp); + block_cbp |= pat << (i << 2); + if(!v->ttmbf && ttmb < 8) ttmb = -1; + first_block = 0; + } + } + return 0; + } + else //Skipped MB + { + s->mb_intra = 0; + s->current_picture.qscale_table[mb_pos] = 0; + for (i=0; i<6; i++) { + v->mb_type[0][s->block_index[i]] = 0; + s->dc_val[0][s->block_index[i]] = 0; + } + for (i=0; i<4; i++) + { + vc1_pred_mv(s, i, 0, 0, 0, v->range_x, v->range_y, v->mb_type[0]); + vc1_mc_4mv_luma(v, i); + } + vc1_mc_4mv_chroma(v); + s->current_picture.qscale_table[mb_pos] = 0; + return 0; + } + } + v->cbp[s->mb_x] = block_cbp; + + /* Should never happen */ + return -1; +} + +/** Decode one B-frame MB (in Main profile) + */ +static void vc1_decode_b_mb(VC1Context *v) +{ + MpegEncContext *s = &v->s; + GetBitContext *gb = &s->gb; + int i, j; + int mb_pos = s->mb_x + s->mb_y * s->mb_stride; + int cbp = 0; /* cbp decoding stuff */ + int mqdiff, mquant; /* MB quantization */ + int ttmb = v->ttfrm; /* MB Transform type */ + int mb_has_coeffs = 0; /* last_flag */ + int index, index1; /* LUT indexes */ + int val, sign; /* temp values */ + int first_block = 1; + int dst_idx, off; + int skipped, direct; + int dmv_x[2], dmv_y[2]; + int bmvtype = BMV_TYPE_BACKWARD; + + mquant = v->pq; /* Loosy initialization */ + s->mb_intra = 0; + + if (v->dmb_is_raw) + direct = get_bits1(gb); + else + direct = v->direct_mb_plane[mb_pos]; + if (v->skip_is_raw) + skipped = get_bits1(gb); + else + skipped = v->s.mbskip_table[mb_pos]; + + s->dsp.clear_blocks(s->block[0]); + dmv_x[0] = dmv_x[1] = dmv_y[0] = dmv_y[1] = 0; + for(i = 0; i < 6; i++) { + v->mb_type[0][s->block_index[i]] = 0; + s->dc_val[0][s->block_index[i]] = 0; + } + s->current_picture.qscale_table[mb_pos] = 0; + + if (!direct) { + if (!skipped) { + GET_MVDATA(dmv_x[0], dmv_y[0]); + dmv_x[1] = dmv_x[0]; + dmv_y[1] = dmv_y[0]; + } + if(skipped || !s->mb_intra) { + bmvtype = decode012(gb); + switch(bmvtype) { + case 0: + bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_BACKWARD : BMV_TYPE_FORWARD; + break; + case 1: + bmvtype = (v->bfraction >= (B_FRACTION_DEN/2)) ? BMV_TYPE_FORWARD : BMV_TYPE_BACKWARD; + break; + case 2: + bmvtype = BMV_TYPE_INTERPOLATED; + dmv_x[0] = dmv_y[0] = 0; + } + } + } + for(i = 0; i < 6; i++) + v->mb_type[0][s->block_index[i]] = s->mb_intra; + + if (skipped) { + if(direct) bmvtype = BMV_TYPE_INTERPOLATED; + vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype); + vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype); + return; + } + if (direct) { + cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2); + GET_MQUANT(); + s->mb_intra = 0; + s->current_picture.qscale_table[mb_pos] = mquant; + if(!v->ttmbf) + ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2); + dmv_x[0] = dmv_y[0] = dmv_x[1] = dmv_y[1] = 0; + vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype); + vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype); + } else { + if(!mb_has_coeffs && !s->mb_intra) { + /* no coded blocks - effectively skipped */ + vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype); + vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype); + return; + } + if(s->mb_intra && !mb_has_coeffs) { + GET_MQUANT(); + s->current_picture.qscale_table[mb_pos] = mquant; + s->ac_pred = get_bits1(gb); + cbp = 0; + vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype); + } else { + if(bmvtype == BMV_TYPE_INTERPOLATED) { + GET_MVDATA(dmv_x[0], dmv_y[0]); + if(!mb_has_coeffs) { + /* interpolated skipped block */ + vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype); + vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype); + return; + } + } + vc1_pred_b_mv(v, dmv_x, dmv_y, direct, bmvtype); + if(!s->mb_intra) { + vc1_b_mc(v, dmv_x, dmv_y, direct, bmvtype); + } + if(s->mb_intra) + s->ac_pred = get_bits1(gb); + cbp = get_vlc2(&v->s.gb, v->cbpcy_vlc->table, VC1_CBPCY_P_VLC_BITS, 2); + GET_MQUANT(); + s->current_picture.qscale_table[mb_pos] = mquant; + if(!v->ttmbf && !s->mb_intra && mb_has_coeffs) + ttmb = get_vlc2(gb, ff_vc1_ttmb_vlc[v->tt_index].table, VC1_TTMB_VLC_BITS, 2); + } + } + dst_idx = 0; + for (i=0; i<6; i++) + { + s->dc_val[0][s->block_index[i]] = 0; + dst_idx += i >> 2; + val = ((cbp >> (5 - i)) & 1); + off = (i & 4) ? 0 : ((i & 1) * 8 + (i & 2) * 4 * s->linesize); + v->mb_type[0][s->block_index[i]] = s->mb_intra; + if(s->mb_intra) { + /* check if prediction blocks A and C are available */ + v->a_avail = v->c_avail = 0; + if(i == 2 || i == 3 || !s->first_slice_line) + v->a_avail = v->mb_type[0][s->block_index[i] - s->block_wrap[i]]; + if(i == 1 || i == 3 || s->mb_x) + v->c_avail = v->mb_type[0][s->block_index[i] - 1]; + + vc1_decode_intra_block(v, s->block[i], i, val, mquant, (i&4)?v->codingset2:v->codingset); + if((i>3) && (s->flags & CODEC_FLAG_GRAY)) continue; + s->dsp.vc1_inv_trans_8x8(s->block[i]); + if(v->rangeredfrm) for(j = 0; j < 64; j++) s->block[i][j] <<= 1; + s->dsp.put_signed_pixels_clamped(s->block[i], s->dest[dst_idx] + off, s->linesize >> ((i & 4) >> 2)); + } else if(val) { + vc1_decode_p_block(v, s->block[i], i, mquant, ttmb, first_block, s->dest[dst_idx] + off, (i&4)?s->uvlinesize:s->linesize, (i&4) && (s->flags & CODEC_FLAG_GRAY), 0, 0, 0); + if(!v->ttmbf && ttmb < 8) ttmb = -1; + first_block = 0; + } + } +} + +/** Decode blocks of I-frame + */ +static void vc1_decode_i_blocks(VC1Context *v) +{ + int k, j; + MpegEncContext *s = &v->s; + int cbp, val; + uint8_t *coded_val; + int mb_pos; + + /* select codingmode used for VLC tables selection */ + switch(v->y_ac_table_index){ + case 0: + v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA; + break; + case 1: + v->codingset = CS_HIGH_MOT_INTRA; + break; + case 2: + v->codingset = CS_MID_RATE_INTRA; + break; + } + + switch(v->c_ac_table_index){ + case 0: + v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER; + break; + case 1: + v->codingset2 = CS_HIGH_MOT_INTER; + break; + case 2: + v->codingset2 = CS_MID_RATE_INTER; + break; + } + + /* Set DC scale - y and c use the same */ + s->y_dc_scale = s->y_dc_scale_table[v->pq]; + s->c_dc_scale = s->c_dc_scale_table[v->pq]; + + //do frame decode + s->mb_x = s->mb_y = 0; + s->mb_intra = 1; + s->first_slice_line = 1; + for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) { + for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) { + ff_init_block_index(s); + ff_update_block_index(s); + s->dsp.clear_blocks(s->block[0]); + mb_pos = s->mb_x + s->mb_y * s->mb_width; + s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA; + s->current_picture.qscale_table[mb_pos] = v->pq; + s->current_picture.motion_val[1][s->block_index[0]][0] = 0; + s->current_picture.motion_val[1][s->block_index[0]][1] = 0; + + // do actual MB decoding and displaying + cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2); + v->s.ac_pred = get_bits1(&v->s.gb); + + for(k = 0; k < 6; k++) { + val = ((cbp >> (5 - k)) & 1); + + if (k < 4) { + int pred = vc1_coded_block_pred(&v->s, k, &coded_val); + val = val ^ pred; + *coded_val = val; + } + cbp |= val << (5 - k); + + vc1_decode_i_block(v, s->block[k], k, val, (k<4)? v->codingset : v->codingset2); + + s->dsp.vc1_inv_trans_8x8(s->block[k]); + if(v->pq >= 9 && v->overlap) { + for(j = 0; j < 64; j++) s->block[k][j] += 128; + } + } + + vc1_put_block(v, s->block); + if(v->pq >= 9 && v->overlap) { + if(s->mb_x) { + s->dsp.vc1_h_overlap(s->dest[0], s->linesize); + s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize); + if(!(s->flags & CODEC_FLAG_GRAY)) { + s->dsp.vc1_h_overlap(s->dest[1], s->uvlinesize); + s->dsp.vc1_h_overlap(s->dest[2], s->uvlinesize); + } + } + s->dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize); + s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize); + if(!s->first_slice_line) { + s->dsp.vc1_v_overlap(s->dest[0], s->linesize); + s->dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize); + if(!(s->flags & CODEC_FLAG_GRAY)) { + s->dsp.vc1_v_overlap(s->dest[1], s->uvlinesize); + s->dsp.vc1_v_overlap(s->dest[2], s->uvlinesize); + } + } + s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize); + s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize); + } + if(v->s.loop_filter) vc1_loop_filter_iblk(s, v->pq); + + if(get_bits_count(&s->gb) > v->bits) { + ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END)); + av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n", get_bits_count(&s->gb), v->bits); + return; + } + } + ff_draw_horiz_band(s, s->mb_y * 16, 16); + s->first_slice_line = 0; + } + ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END)); +} + +/** Decode blocks of I-frame for advanced profile + */ +static void vc1_decode_i_blocks_adv(VC1Context *v) +{ + int k, j; + MpegEncContext *s = &v->s; + int cbp, val; + uint8_t *coded_val; + int mb_pos; + int mquant = v->pq; + int mqdiff; + int overlap; + GetBitContext *gb = &s->gb; + + /* select codingmode used for VLC tables selection */ + switch(v->y_ac_table_index){ + case 0: + v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA; + break; + case 1: + v->codingset = CS_HIGH_MOT_INTRA; + break; + case 2: + v->codingset = CS_MID_RATE_INTRA; + break; + } + + switch(v->c_ac_table_index){ + case 0: + v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER; + break; + case 1: + v->codingset2 = CS_HIGH_MOT_INTER; + break; + case 2: + v->codingset2 = CS_MID_RATE_INTER; + break; + } + + //do frame decode + s->mb_x = s->mb_y = 0; + s->mb_intra = 1; + s->first_slice_line = 1; + for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) { + for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) { + ff_init_block_index(s); + ff_update_block_index(s); + s->dsp.clear_blocks(s->block[0]); + mb_pos = s->mb_x + s->mb_y * s->mb_stride; + s->current_picture.mb_type[mb_pos] = MB_TYPE_INTRA; + s->current_picture.motion_val[1][s->block_index[0]][0] = 0; + s->current_picture.motion_val[1][s->block_index[0]][1] = 0; + + // do actual MB decoding and displaying + cbp = get_vlc2(&v->s.gb, ff_msmp4_mb_i_vlc.table, MB_INTRA_VLC_BITS, 2); + if(v->acpred_is_raw) + v->s.ac_pred = get_bits1(&v->s.gb); + else + v->s.ac_pred = v->acpred_plane[mb_pos]; + + if(v->condover == CONDOVER_SELECT) { + if(v->overflg_is_raw) + overlap = get_bits1(&v->s.gb); + else + overlap = v->over_flags_plane[mb_pos]; + } else + overlap = (v->condover == CONDOVER_ALL); + + GET_MQUANT(); + + s->current_picture.qscale_table[mb_pos] = mquant; + /* Set DC scale - y and c use the same */ + s->y_dc_scale = s->y_dc_scale_table[mquant]; + s->c_dc_scale = s->c_dc_scale_table[mquant]; + + for(k = 0; k < 6; k++) { + val = ((cbp >> (5 - k)) & 1); + + if (k < 4) { + int pred = vc1_coded_block_pred(&v->s, k, &coded_val); + val = val ^ pred; + *coded_val = val; + } + cbp |= val << (5 - k); + + v->a_avail = !s->first_slice_line || (k==2 || k==3); + v->c_avail = !!s->mb_x || (k==1 || k==3); + + vc1_decode_i_block_adv(v, s->block[k], k, val, (k<4)? v->codingset : v->codingset2, mquant); + + s->dsp.vc1_inv_trans_8x8(s->block[k]); + for(j = 0; j < 64; j++) s->block[k][j] += 128; + } + + vc1_put_block(v, s->block); + if(overlap) { + if(s->mb_x) { + s->dsp.vc1_h_overlap(s->dest[0], s->linesize); + s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize, s->linesize); + if(!(s->flags & CODEC_FLAG_GRAY)) { + s->dsp.vc1_h_overlap(s->dest[1], s->uvlinesize); + s->dsp.vc1_h_overlap(s->dest[2], s->uvlinesize); + } + } + s->dsp.vc1_h_overlap(s->dest[0] + 8, s->linesize); + s->dsp.vc1_h_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize); + if(!s->first_slice_line) { + s->dsp.vc1_v_overlap(s->dest[0], s->linesize); + s->dsp.vc1_v_overlap(s->dest[0] + 8, s->linesize); + if(!(s->flags & CODEC_FLAG_GRAY)) { + s->dsp.vc1_v_overlap(s->dest[1], s->uvlinesize); + s->dsp.vc1_v_overlap(s->dest[2], s->uvlinesize); + } + } + s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize, s->linesize); + s->dsp.vc1_v_overlap(s->dest[0] + 8 * s->linesize + 8, s->linesize); + } + if(v->s.loop_filter) vc1_loop_filter_iblk(s, v->pq); + + if(get_bits_count(&s->gb) > v->bits) { + ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END)); + av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i\n", get_bits_count(&s->gb), v->bits); + return; + } + } + ff_draw_horiz_band(s, s->mb_y * 16, 16); + s->first_slice_line = 0; + } + ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END)); +} + +static void vc1_decode_p_blocks(VC1Context *v) +{ + MpegEncContext *s = &v->s; + + /* select codingmode used for VLC tables selection */ + switch(v->c_ac_table_index){ + case 0: + v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA; + break; + case 1: + v->codingset = CS_HIGH_MOT_INTRA; + break; + case 2: + v->codingset = CS_MID_RATE_INTRA; + break; + } + + switch(v->c_ac_table_index){ + case 0: + v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER; + break; + case 1: + v->codingset2 = CS_HIGH_MOT_INTER; + break; + case 2: + v->codingset2 = CS_MID_RATE_INTER; + break; + } + + s->first_slice_line = 1; + memset(v->cbp_base, 0, sizeof(v->cbp_base[0])*2*s->mb_stride); + for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) { + for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) { + ff_init_block_index(s); + ff_update_block_index(s); + s->dsp.clear_blocks(s->block[0]); + + vc1_decode_p_mb(v); + if(get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) { + ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END)); + av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i at %ix%i\n", get_bits_count(&s->gb), v->bits,s->mb_x,s->mb_y); + return; + } + } + memmove(v->cbp_base, v->cbp, sizeof(v->cbp_base[0])*s->mb_stride); + ff_draw_horiz_band(s, s->mb_y * 16, 16); + s->first_slice_line = 0; + } + ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END)); +} + +static void vc1_decode_b_blocks(VC1Context *v) +{ + MpegEncContext *s = &v->s; + + /* select codingmode used for VLC tables selection */ + switch(v->c_ac_table_index){ + case 0: + v->codingset = (v->pqindex <= 8) ? CS_HIGH_RATE_INTRA : CS_LOW_MOT_INTRA; + break; + case 1: + v->codingset = CS_HIGH_MOT_INTRA; + break; + case 2: + v->codingset = CS_MID_RATE_INTRA; + break; + } + + switch(v->c_ac_table_index){ + case 0: + v->codingset2 = (v->pqindex <= 8) ? CS_HIGH_RATE_INTER : CS_LOW_MOT_INTER; + break; + case 1: + v->codingset2 = CS_HIGH_MOT_INTER; + break; + case 2: + v->codingset2 = CS_MID_RATE_INTER; + break; + } + + s->first_slice_line = 1; + for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) { + for(s->mb_x = 0; s->mb_x < s->mb_width; s->mb_x++) { + ff_init_block_index(s); + ff_update_block_index(s); + s->dsp.clear_blocks(s->block[0]); + + vc1_decode_b_mb(v); + if(get_bits_count(&s->gb) > v->bits || get_bits_count(&s->gb) < 0) { + ff_er_add_slice(s, 0, 0, s->mb_x, s->mb_y, (AC_END|DC_END|MV_END)); + av_log(s->avctx, AV_LOG_ERROR, "Bits overconsumption: %i > %i at %ix%i\n", get_bits_count(&s->gb), v->bits,s->mb_x,s->mb_y); + return; + } + if(v->s.loop_filter) vc1_loop_filter_iblk(s, v->pq); + } + ff_draw_horiz_band(s, s->mb_y * 16, 16); + s->first_slice_line = 0; + } + ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END)); +} + +static void vc1_decode_skip_blocks(VC1Context *v) +{ + MpegEncContext *s = &v->s; + + ff_er_add_slice(s, 0, 0, s->mb_width - 1, s->mb_height - 1, (AC_END|DC_END|MV_END)); + s->first_slice_line = 1; + for(s->mb_y = 0; s->mb_y < s->mb_height; s->mb_y++) { + s->mb_x = 0; + ff_init_block_index(s); + ff_update_block_index(s); + memcpy(s->dest[0], s->last_picture.data[0] + s->mb_y * 16 * s->linesize, s->linesize * 16); + memcpy(s->dest[1], s->last_picture.data[1] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8); + memcpy(s->dest[2], s->last_picture.data[2] + s->mb_y * 8 * s->uvlinesize, s->uvlinesize * 8); + ff_draw_horiz_band(s, s->mb_y * 16, 16); + s->first_slice_line = 0; + } + s->pict_type = FF_P_TYPE; +} + +static void vc1_decode_blocks(VC1Context *v) +{ + + v->s.esc3_level_length = 0; + if(v->x8_type){ + ff_intrax8_decode_picture(&v->x8, 2*v->pq+v->halfpq, v->pq*(!v->pquantizer) ); + }else{ + + switch(v->s.pict_type) { + case FF_I_TYPE: + if(v->profile == PROFILE_ADVANCED) + vc1_decode_i_blocks_adv(v); + else + vc1_decode_i_blocks(v); + break; + case FF_P_TYPE: + if(v->p_frame_skipped) + vc1_decode_skip_blocks(v); + else + vc1_decode_p_blocks(v); + break; + case FF_B_TYPE: + if(v->bi_type){ + if(v->profile == PROFILE_ADVANCED) + vc1_decode_i_blocks_adv(v); + else + vc1_decode_i_blocks(v); + }else + vc1_decode_b_blocks(v); + break; + } + } +} + +/** Initialize a VC1/WMV3 decoder + * @todo TODO: Handle VC-1 IDUs (Transport level?) + * @todo TODO: Decypher remaining bits in extra_data + */ +static av_cold int vc1_decode_init(AVCodecContext *avctx) +{ + VC1Context *v = avctx->priv_data; + MpegEncContext *s = &v->s; + GetBitContext gb; + + if (!avctx->extradata_size || !avctx->extradata) return -1; + if (!(avctx->flags & CODEC_FLAG_GRAY)) + avctx->pix_fmt = avctx->get_format(avctx, avctx->codec->pix_fmts); + else + avctx->pix_fmt = PIX_FMT_GRAY8; + avctx->hwaccel = ff_find_hwaccel(avctx->codec->id, avctx->pix_fmt); + v->s.avctx = avctx; + avctx->flags |= CODEC_FLAG_EMU_EDGE; + v->s.flags |= CODEC_FLAG_EMU_EDGE; + + if(avctx->idct_algo==FF_IDCT_AUTO){ + avctx->idct_algo=FF_IDCT_WMV2; + } + + if(ff_h263_decode_init(avctx) < 0) + return -1; + if (vc1_init_common(v) < 0) return -1; + + avctx->coded_width = avctx->width; + avctx->coded_height = avctx->height; + if (avctx->codec_id == CODEC_ID_WMV3) + { + int count = 0; + + // looks like WMV3 has a sequence header stored in the extradata + // advanced sequence header may be before the first frame + // the last byte of the extradata is a version number, 1 for the + // samples we can decode + + init_get_bits(&gb, avctx->extradata, avctx->extradata_size*8); + + if (vc1_decode_sequence_header(avctx, v, &gb) < 0) + return -1; + + count = avctx->extradata_size*8 - get_bits_count(&gb); + if (count>0) + { + av_log(avctx, AV_LOG_INFO, "Extra data: %i bits left, value: %X\n", + count, get_bits(&gb, count)); + } + else if (count < 0) + { + av_log(avctx, AV_LOG_INFO, "Read %i bits in overflow\n", -count); + } + } else { // VC1/WVC1 + const uint8_t *start = avctx->extradata; + uint8_t *end = avctx->extradata + avctx->extradata_size; + const uint8_t *next; + int size, buf2_size; + uint8_t *buf2 = NULL; + int seq_initialized = 0, ep_initialized = 0; + + if(avctx->extradata_size < 16) { + av_log(avctx, AV_LOG_ERROR, "Extradata size too small: %i\n", avctx->extradata_size); + return -1; + } + + buf2 = av_mallocz(avctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE); + if(start[0]) start++; // in WVC1 extradata first byte is its size + next = start; + for(; next < end; start = next){ + next = find_next_marker(start + 4, end); + size = next - start - 4; + if(size <= 0) continue; + buf2_size = vc1_unescape_buffer(start + 4, size, buf2); + init_get_bits(&gb, buf2, buf2_size * 8); + switch(AV_RB32(start)){ + case VC1_CODE_SEQHDR: + if(vc1_decode_sequence_header(avctx, v, &gb) < 0){ + av_free(buf2); + return -1; + } + seq_initialized = 1; + break; + case VC1_CODE_ENTRYPOINT: + if(vc1_decode_entry_point(avctx, v, &gb) < 0){ + av_free(buf2); + return -1; + } + ep_initialized = 1; + break; + } + } + av_free(buf2); + if(!seq_initialized || !ep_initialized){ + av_log(avctx, AV_LOG_ERROR, "Incomplete extradata\n"); + return -1; + } + } + avctx->has_b_frames= !!(avctx->max_b_frames); + s->low_delay = !avctx->has_b_frames; + + s->mb_width = (avctx->coded_width+15)>>4; + s->mb_height = (avctx->coded_height+15)>>4; + + /* Allocate mb bitplanes */ + v->mv_type_mb_plane = av_malloc(s->mb_stride * s->mb_height); + v->direct_mb_plane = av_malloc(s->mb_stride * s->mb_height); + v->acpred_plane = av_malloc(s->mb_stride * s->mb_height); + v->over_flags_plane = av_malloc(s->mb_stride * s->mb_height); + + v->cbp_base = av_malloc(sizeof(v->cbp_base[0]) * 2 * s->mb_stride); + v->cbp = v->cbp_base + s->mb_stride; + + /* allocate block type info in that way so it could be used with s->block_index[] */ + v->mb_type_base = av_malloc(s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride * (s->mb_height + 1) * 2); + v->mb_type[0] = v->mb_type_base + s->b8_stride + 1; + v->mb_type[1] = v->mb_type_base + s->b8_stride * (s->mb_height * 2 + 1) + s->mb_stride + 1; + v->mb_type[2] = v->mb_type[1] + s->mb_stride * (s->mb_height + 1); + + /* Init coded blocks info */ + if (v->profile == PROFILE_ADVANCED) + { +// if (alloc_bitplane(&v->over_flags_plane, s->mb_width, s->mb_height) < 0) +// return -1; +// if (alloc_bitplane(&v->ac_pred_plane, s->mb_width, s->mb_height) < 0) +// return -1; + } + + ff_intrax8_common_init(&v->x8,s); + return 0; +} + + +/** Decode a VC1/WMV3 frame + * @todo TODO: Handle VC-1 IDUs (Transport level?) + */ +static int vc1_decode_frame(AVCodecContext *avctx, + void *data, int *data_size, + AVPacket *avpkt) +{ + const uint8_t *buf = avpkt->data; + int buf_size = avpkt->size; + VC1Context *v = avctx->priv_data; + MpegEncContext *s = &v->s; + AVFrame *pict = data; + uint8_t *buf2 = NULL; + const uint8_t *buf_start = buf; + + /* no supplementary picture */ + if (buf_size == 0) { + /* special case for last picture */ + if (s->low_delay==0 && s->next_picture_ptr) { + *pict= *(AVFrame*)s->next_picture_ptr; + s->next_picture_ptr= NULL; + + *data_size = sizeof(AVFrame); + } + + return 0; + } + + /* We need to set current_picture_ptr before reading the header, + * otherwise we cannot store anything in there. */ + if(s->current_picture_ptr==NULL || s->current_picture_ptr->data[0]){ + int i= ff_find_unused_picture(s, 0); + s->current_picture_ptr= &s->picture[i]; + } + + if (s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU){ + if (v->profile < PROFILE_ADVANCED) + avctx->pix_fmt = PIX_FMT_VDPAU_WMV3; + else + avctx->pix_fmt = PIX_FMT_VDPAU_VC1; + } + + //for advanced profile we may need to parse and unescape data + if (avctx->codec_id == CODEC_ID_VC1) { + int buf_size2 = 0; + buf2 = av_mallocz(buf_size + FF_INPUT_BUFFER_PADDING_SIZE); + + if(IS_MARKER(AV_RB32(buf))){ /* frame starts with marker and needs to be parsed */ + const uint8_t *start, *end, *next; + int size; + + next = buf; + for(start = buf, end = buf + buf_size; next < end; start = next){ + next = find_next_marker(start + 4, end); + size = next - start - 4; + if(size <= 0) continue; + switch(AV_RB32(start)){ + case VC1_CODE_FRAME: + if (avctx->hwaccel || + s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU) + buf_start = start; + buf_size2 = vc1_unescape_buffer(start + 4, size, buf2); + break; + case VC1_CODE_ENTRYPOINT: /* it should be before frame data */ + buf_size2 = vc1_unescape_buffer(start + 4, size, buf2); + init_get_bits(&s->gb, buf2, buf_size2*8); + vc1_decode_entry_point(avctx, v, &s->gb); + break; + case VC1_CODE_SLICE: + av_log(avctx, AV_LOG_ERROR, "Sliced decoding is not implemented (yet)\n"); + av_free(buf2); + return -1; + } + } + }else if(v->interlace && ((buf[0] & 0xC0) == 0xC0)){ /* WVC1 interlaced stores both fields divided by marker */ + const uint8_t *divider; + + divider = find_next_marker(buf, buf + buf_size); + if((divider == (buf + buf_size)) || AV_RB32(divider) != VC1_CODE_FIELD){ + av_log(avctx, AV_LOG_ERROR, "Error in WVC1 interlaced frame\n"); + av_free(buf2); + return -1; + } + + buf_size2 = vc1_unescape_buffer(buf, divider - buf, buf2); + // TODO + av_free(buf2);return -1; + }else{ + buf_size2 = vc1_unescape_buffer(buf, buf_size, buf2); + } + init_get_bits(&s->gb, buf2, buf_size2*8); + } else + init_get_bits(&s->gb, buf, buf_size*8); + // do parse frame header + if(v->profile < PROFILE_ADVANCED) { + if(vc1_parse_frame_header(v, &s->gb) == -1) { + av_free(buf2); + return -1; + } + } else { + if(vc1_parse_frame_header_adv(v, &s->gb) == -1) { + av_free(buf2); + return -1; + } + } + + if(s->pict_type != FF_I_TYPE && !v->res_rtm_flag){ + av_free(buf2); + return -1; + } + + // for hurry_up==5 + s->current_picture.pict_type= s->pict_type; + s->current_picture.key_frame= s->pict_type == FF_I_TYPE; + + /* skip B-frames if we don't have reference frames */ + if(s->last_picture_ptr==NULL && (s->pict_type==FF_B_TYPE || s->dropable)){ + av_free(buf2); + return -1;//buf_size; + } + /* skip b frames if we are in a hurry */ + if(avctx->hurry_up && s->pict_type==FF_B_TYPE) return -1;//buf_size; + if( (avctx->skip_frame >= AVDISCARD_NONREF && s->pict_type==FF_B_TYPE) + || (avctx->skip_frame >= AVDISCARD_NONKEY && s->pict_type!=FF_I_TYPE) + || avctx->skip_frame >= AVDISCARD_ALL) { + av_free(buf2); + return buf_size; + } + /* skip everything if we are in a hurry>=5 */ + if(avctx->hurry_up>=5) { + av_free(buf2); + return -1;//buf_size; + } + + if(s->next_p_frame_damaged){ + if(s->pict_type==FF_B_TYPE) + return buf_size; + else + s->next_p_frame_damaged=0; + } + + if(MPV_frame_start(s, avctx) < 0) { + av_free(buf2); + return -1; + } + + s->me.qpel_put= s->dsp.put_qpel_pixels_tab; + s->me.qpel_avg= s->dsp.avg_qpel_pixels_tab; + + if ((CONFIG_VC1_VDPAU_DECODER || CONFIG_WMV3_VDPAU_DECODER) + &&s->avctx->codec->capabilities&CODEC_CAP_HWACCEL_VDPAU) + ff_vdpau_vc1_decode_picture(s, buf_start, (buf + buf_size) - buf_start); + else if (avctx->hwaccel) { + if (avctx->hwaccel->start_frame(avctx, buf, buf_size) < 0) + return -1; + if (avctx->hwaccel->decode_slice(avctx, buf_start, (buf + buf_size) - buf_start) < 0) + return -1; + if (avctx->hwaccel->end_frame(avctx) < 0) + return -1; + } else { + ff_er_frame_start(s); + + v->bits = buf_size * 8; + vc1_decode_blocks(v); +//av_log(s->avctx, AV_LOG_INFO, "Consumed %i/%i bits\n", get_bits_count(&s->gb), buf_size*8); +// if(get_bits_count(&s->gb) > buf_size * 8) +// return -1; + ff_er_frame_end(s); + } + + MPV_frame_end(s); + +assert(s->current_picture.pict_type == s->current_picture_ptr->pict_type); +assert(s->current_picture.pict_type == s->pict_type); + if (s->pict_type == FF_B_TYPE || s->low_delay) { + *pict= *(AVFrame*)s->current_picture_ptr; + } else if (s->last_picture_ptr != NULL) { + *pict= *(AVFrame*)s->last_picture_ptr; + } + + if(s->last_picture_ptr || s->low_delay){ + *data_size = sizeof(AVFrame); + ff_print_debug_info(s, pict); + } + + av_free(buf2); + return buf_size; +} + + +/** Close a VC1/WMV3 decoder + * @warning Initial try at using MpegEncContext stuff + */ +static av_cold int vc1_decode_end(AVCodecContext *avctx) +{ + VC1Context *v = avctx->priv_data; + + av_freep(&v->hrd_rate); + av_freep(&v->hrd_buffer); + MPV_common_end(&v->s); + av_freep(&v->mv_type_mb_plane); + av_freep(&v->direct_mb_plane); + av_freep(&v->acpred_plane); + av_freep(&v->over_flags_plane); + av_freep(&v->mb_type_base); + av_freep(&v->cbp_base); + ff_intrax8_common_end(&v->x8); + return 0; +} + + +AVCodec vc1_decoder = { + "vc1", + CODEC_TYPE_VIDEO, + CODEC_ID_VC1, + sizeof(VC1Context), + vc1_decode_init, + NULL, + vc1_decode_end, + vc1_decode_frame, + CODEC_CAP_DR1 | CODEC_CAP_DELAY, + NULL, + .long_name = NULL_IF_CONFIG_SMALL("SMPTE VC-1"), + .pix_fmts = ff_hwaccel_pixfmt_list_420 +}; + +AVCodec wmv3_decoder = { + "wmv3", + CODEC_TYPE_VIDEO, + CODEC_ID_WMV3, + sizeof(VC1Context), + vc1_decode_init, + NULL, + vc1_decode_end, + vc1_decode_frame, + CODEC_CAP_DR1 | CODEC_CAP_DELAY, + NULL, + .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9"), + .pix_fmts = ff_hwaccel_pixfmt_list_420 +}; + +#if CONFIG_WMV3_VDPAU_DECODER +AVCodec wmv3_vdpau_decoder = { + "wmv3_vdpau", + CODEC_TYPE_VIDEO, + CODEC_ID_WMV3, + sizeof(VC1Context), + vc1_decode_init, + NULL, + vc1_decode_end, + vc1_decode_frame, + CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU, + NULL, + .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 9 VDPAU"), + .pix_fmts = (enum PixelFormat[]){PIX_FMT_VDPAU_WMV3, PIX_FMT_NONE} +}; +#endif + +#if CONFIG_VC1_VDPAU_DECODER +AVCodec vc1_vdpau_decoder = { + "vc1_vdpau", + CODEC_TYPE_VIDEO, + CODEC_ID_VC1, + sizeof(VC1Context), + vc1_decode_init, + NULL, + vc1_decode_end, + vc1_decode_frame, + CODEC_CAP_DR1 | CODEC_CAP_DELAY | CODEC_CAP_HWACCEL_VDPAU, + NULL, + .long_name = NULL_IF_CONFIG_SMALL("SMPTE VC-1 VDPAU"), + .pix_fmts = (enum PixelFormat[]){PIX_FMT_VDPAU_VC1, PIX_FMT_NONE} +}; +#endif |