/* * The simplest mpeg encoder (well, it was the simplest!) * Copyright (c) 2000,2001 Fabrice Bellard * Copyright (c) 2002-2004 Michael Niedermayer * * 4MV & hq & B-frame encoding stuff by Michael Niedermayer * * This file is part of Libav. * * Libav 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. * * Libav 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 Libav; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ /** * @file * The simplest mpeg encoder (well, it was the simplest!). */ #include "libavutil/attributes.h" #include "libavutil/avassert.h" #include "libavutil/imgutils.h" #include "libavutil/internal.h" #include "libavutil/timer.h" #include "avcodec.h" #include "blockdsp.h" #include "idctdsp.h" #include "internal.h" #include "mathops.h" #include "mpeg_er.h" #include "mpegutils.h" #include "mpegvideo.h" #include "mpegvideodata.h" #include "mjpegenc.h" #include "msmpeg4.h" #include "qpeldsp.h" #include "xvmc_internal.h" #include "thread.h" #include "wmv2.h" #include static void dct_unquantize_mpeg1_intra_c(MpegEncContext *s, int16_t *block, int n, int qscale) { int i, level, nCoeffs; const uint16_t *quant_matrix; nCoeffs= s->block_last_index[n]; if (n < 4) block[0] = block[0] * s->y_dc_scale; else block[0] = block[0] * s->c_dc_scale; /* XXX: only MPEG-1 */ quant_matrix = s->intra_matrix; for(i=1;i<=nCoeffs;i++) { int j= s->intra_scantable.permutated[i]; level = block[j]; if (level) { if (level < 0) { level = -level; level = (int)(level * qscale * quant_matrix[j]) >> 3; level = (level - 1) | 1; level = -level; } else { level = (int)(level * qscale * quant_matrix[j]) >> 3; level = (level - 1) | 1; } block[j] = level; } } } static void dct_unquantize_mpeg1_inter_c(MpegEncContext *s, int16_t *block, int n, int qscale) { int i, level, nCoeffs; const uint16_t *quant_matrix; nCoeffs= s->block_last_index[n]; quant_matrix = s->inter_matrix; for(i=0; i<=nCoeffs; i++) { int j= s->intra_scantable.permutated[i]; level = block[j]; if (level) { if (level < 0) { level = -level; level = (((level << 1) + 1) * qscale * ((int) (quant_matrix[j]))) >> 4; level = (level - 1) | 1; level = -level; } else { level = (((level << 1) + 1) * qscale * ((int) (quant_matrix[j]))) >> 4; level = (level - 1) | 1; } block[j] = level; } } } static void dct_unquantize_mpeg2_intra_c(MpegEncContext *s, int16_t *block, int n, int qscale) { int i, level, nCoeffs; const uint16_t *quant_matrix; if(s->alternate_scan) nCoeffs= 63; else nCoeffs= s->block_last_index[n]; if (n < 4) block[0] = block[0] * s->y_dc_scale; else block[0] = block[0] * s->c_dc_scale; quant_matrix = s->intra_matrix; for(i=1;i<=nCoeffs;i++) { int j= s->intra_scantable.permutated[i]; level = block[j]; if (level) { if (level < 0) { level = -level; level = (int)(level * qscale * quant_matrix[j]) >> 3; level = -level; } else { level = (int)(level * qscale * quant_matrix[j]) >> 3; } block[j] = level; } } } static void dct_unquantize_mpeg2_intra_bitexact(MpegEncContext *s, int16_t *block, int n, int qscale) { int i, level, nCoeffs; const uint16_t *quant_matrix; int sum=-1; if(s->alternate_scan) nCoeffs= 63; else nCoeffs= s->block_last_index[n]; if (n < 4) block[0] = block[0] * s->y_dc_scale; else block[0] = block[0] * s->c_dc_scale; quant_matrix = s->intra_matrix; for(i=1;i<=nCoeffs;i++) { int j= s->intra_scantable.permutated[i]; level = block[j]; if (level) { if (level < 0) { level = -level; level = (int)(level * qscale * quant_matrix[j]) >> 3; level = -level; } else { level = (int)(level * qscale * quant_matrix[j]) >> 3; } block[j] = level; sum+=level; } } block[63]^=sum&1; } static void dct_unquantize_mpeg2_inter_c(MpegEncContext *s, int16_t *block, int n, int qscale) { int i, level, nCoeffs; const uint16_t *quant_matrix; int sum=-1; if(s->alternate_scan) nCoeffs= 63; else nCoeffs= s->block_last_index[n]; quant_matrix = s->inter_matrix; for(i=0; i<=nCoeffs; i++) { int j= s->intra_scantable.permutated[i]; level = block[j]; if (level) { if (level < 0) { level = -level; level = (((level << 1) + 1) * qscale * ((int) (quant_matrix[j]))) >> 4; level = -level; } else { level = (((level << 1) + 1) * qscale * ((int) (quant_matrix[j]))) >> 4; } block[j] = level; sum+=level; } } block[63]^=sum&1; } static void dct_unquantize_h263_intra_c(MpegEncContext *s, int16_t *block, int n, int qscale) { int i, level, qmul, qadd; int nCoeffs; assert(s->block_last_index[n]>=0); qmul = qscale << 1; if (!s->h263_aic) { if (n < 4) block[0] = block[0] * s->y_dc_scale; else block[0] = block[0] * s->c_dc_scale; qadd = (qscale - 1) | 1; }else{ qadd = 0; } if(s->ac_pred) nCoeffs=63; else nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ]; for(i=1; i<=nCoeffs; i++) { level = block[i]; if (level) { if (level < 0) { level = level * qmul - qadd; } else { level = level * qmul + qadd; } block[i] = level; } } } static void dct_unquantize_h263_inter_c(MpegEncContext *s, int16_t *block, int n, int qscale) { int i, level, qmul, qadd; int nCoeffs; assert(s->block_last_index[n]>=0); qadd = (qscale - 1) | 1; qmul = qscale << 1; nCoeffs= s->inter_scantable.raster_end[ s->block_last_index[n] ]; for(i=0; i<=nCoeffs; i++) { level = block[i]; if (level) { if (level < 0) { level = level * qmul - qadd; } else { level = level * qmul + qadd; } block[i] = level; } } } /* init common dct for both encoder and decoder */ static av_cold int dct_init(MpegEncContext *s) { ff_blockdsp_init(&s->bdsp, s->avctx); ff_hpeldsp_init(&s->hdsp, s->avctx->flags); ff_mpegvideodsp_init(&s->mdsp); ff_videodsp_init(&s->vdsp, s->avctx->bits_per_raw_sample); s->dct_unquantize_h263_intra = dct_unquantize_h263_intra_c; s->dct_unquantize_h263_inter = dct_unquantize_h263_inter_c; s->dct_unquantize_mpeg1_intra = dct_unquantize_mpeg1_intra_c; s->dct_unquantize_mpeg1_inter = dct_unquantize_mpeg1_inter_c; s->dct_unquantize_mpeg2_intra = dct_unquantize_mpeg2_intra_c; if (s->avctx->flags & AV_CODEC_FLAG_BITEXACT) s->dct_unquantize_mpeg2_intra = dct_unquantize_mpeg2_intra_bitexact; s->dct_unquantize_mpeg2_inter = dct_unquantize_mpeg2_inter_c; if (HAVE_INTRINSICS_NEON) ff_mpv_common_init_neon(s); if (ARCH_ARM) ff_mpv_common_init_arm(s); if (ARCH_PPC) ff_mpv_common_init_ppc(s); if (ARCH_X86) ff_mpv_common_init_x86(s); return 0; } av_cold void ff_mpv_idct_init(MpegEncContext *s) { ff_idctdsp_init(&s->idsp, s->avctx); /* load & permutate scantables * note: only wmv uses different ones */ if (s->alternate_scan) { ff_init_scantable(s->idsp.idct_permutation, &s->inter_scantable, ff_alternate_vertical_scan); ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable, ff_alternate_vertical_scan); } else { ff_init_scantable(s->idsp.idct_permutation, &s->inter_scantable, ff_zigzag_direct); ff_init_scantable(s->idsp.idct_permutation, &s->intra_scantable, ff_zigzag_direct); } ff_init_scantable(s->idsp.idct_permutation, &s->intra_h_scantable, ff_alternate_horizontal_scan); ff_init_scantable(s->idsp.idct_permutation, &s->intra_v_scantable, ff_alternate_vertical_scan); } static int alloc_picture(MpegEncContext *s, Picture *pic, int shared) { return ff_alloc_picture(s->avctx, pic, &s->me, &s->sc, shared, 0, s->chroma_x_shift, s->chroma_y_shift, s->out_format, s->mb_stride, s->mb_height, s->b8_stride, &s->linesize, &s->uvlinesize); } static int init_duplicate_context(MpegEncContext *s) { int y_size = s->b8_stride * (2 * s->mb_height + 1); int c_size = s->mb_stride * (s->mb_height + 1); int yc_size = y_size + 2 * c_size; int i; s->sc.edge_emu_buffer = s->me.scratchpad = s->me.temp = s->sc.rd_scratchpad = s->sc.b_scratchpad = s->sc.obmc_scratchpad = NULL; if (s->encoding) { FF_ALLOCZ_OR_GOTO(s->avctx, s->me.map, ME_MAP_SIZE * sizeof(uint32_t), fail) FF_ALLOCZ_OR_GOTO(s->avctx, s->me.score_map, ME_MAP_SIZE * sizeof(uint32_t), fail) if (s->noise_reduction) { FF_ALLOCZ_OR_GOTO(s->avctx, s->dct_error_sum, 2 * 64 * sizeof(int), fail) } } FF_ALLOCZ_OR_GOTO(s->avctx, s->blocks, 64 * 12 * 2 * sizeof(int16_t), fail) s->block = s->blocks[0]; for (i = 0; i < 12; i++) { s->pblocks[i] = &s->block[i]; } if (s->avctx->codec_tag == AV_RL32("VCR2")) { // exchange uv int16_t (*tmp)[64]; tmp = s->pblocks[4]; s->pblocks[4] = s->pblocks[5]; s->pblocks[5] = tmp; } if (s->out_format == FMT_H263) { /* ac values */ FF_ALLOCZ_OR_GOTO(s->avctx, s->ac_val_base, yc_size * sizeof(int16_t) * 16, fail); s->ac_val[0] = s->ac_val_base + s->b8_stride + 1; s->ac_val[1] = s->ac_val_base + y_size + s->mb_stride + 1; s->ac_val[2] = s->ac_val[1] + c_size; } return 0; fail: return -1; // free() through ff_mpv_common_end() } static void free_duplicate_context(MpegEncContext *s) { if (!s) return; av_freep(&s->sc.edge_emu_buffer); av_freep(&s->me.scratchpad); s->me.temp = s->sc.rd_scratchpad = s->sc.b_scratchpad = s->sc.obmc_scratchpad = NULL; av_freep(&s->dct_error_sum); av_freep(&s->me.map); av_freep(&s->me.score_map); av_freep(&s->blocks); av_freep(&s->ac_val_base); s->block = NULL; } static void backup_duplicate_context(MpegEncContext *bak, MpegEncContext *src) { #define COPY(a) bak->a = src->a COPY(sc.edge_emu_buffer); COPY(me.scratchpad); COPY(me.temp); COPY(sc.rd_scratchpad); COPY(sc.b_scratchpad); COPY(sc.obmc_scratchpad); COPY(me.map); COPY(me.score_map); COPY(blocks); COPY(block); COPY(start_mb_y); COPY(end_mb_y); COPY(me.map_generation); COPY(pb); COPY(dct_error_sum); COPY(dct_count[0]); COPY(dct_count[1]); COPY(ac_val_base); COPY(ac_val[0]); COPY(ac_val[1]); COPY(ac_val[2]); #undef COPY } int ff_update_duplicate_context(MpegEncContext *dst, MpegEncContext *src) { MpegEncContext bak; int i, ret; // FIXME copy only needed parts // START_TIMER backup_duplicate_context(&bak, dst); memcpy(dst, src, sizeof(MpegEncContext)); backup_duplicate_context(dst, &bak); for (i = 0; i < 12; i++) { dst->pblocks[i] = &dst->block[i]; } if (dst->avctx->codec_tag == AV_RL32("VCR2")) { // exchange uv int16_t (*tmp)[64]; tmp = dst->pblocks[4]; dst->pblocks[4] = dst->pblocks[5]; dst->pblocks[5] = tmp; } if (!dst->sc.edge_emu_buffer && (ret = ff_mpeg_framesize_alloc(dst->avctx, &dst->me, &dst->sc, dst->linesize)) < 0) { av_log(dst->avctx, AV_LOG_ERROR, "failed to allocate context " "scratch buffers.\n"); return ret; } // STOP_TIMER("update_duplicate_context") // about 10k cycles / 0.01 sec for 1000frames on 1ghz with 2 threads return 0; } int ff_mpeg_update_thread_context(AVCodecContext *dst, const AVCodecContext *src) { int i, ret; MpegEncContext *s = dst->priv_data, *s1 = src->priv_data; if (dst == src || !s1->context_initialized) return 0; // FIXME can parameters change on I-frames? // in that case dst may need a reinit if (!s->context_initialized) { int err; memcpy(s, s1, sizeof(MpegEncContext)); s->avctx = dst; s->bitstream_buffer = NULL; s->bitstream_buffer_size = s->allocated_bitstream_buffer_size = 0; ff_mpv_idct_init(s); if ((err = ff_mpv_common_init(s)) < 0) return err; } if (s->height != s1->height || s->width != s1->width || s->context_reinit) { int err; s->context_reinit = 0; s->height = s1->height; s->width = s1->width; if ((err = ff_mpv_common_frame_size_change(s)) < 0) return err; } s->avctx->coded_height = s1->avctx->coded_height; s->avctx->coded_width = s1->avctx->coded_width; s->avctx->width = s1->avctx->width; s->avctx->height = s1->avctx->height; s->coded_picture_number = s1->coded_picture_number; s->picture_number = s1->picture_number; for (i = 0; i < MAX_PICTURE_COUNT; i++) { ff_mpeg_unref_picture(s->avctx, &s->picture[i]); if (s1->picture[i].f->buf[0] && (ret = ff_mpeg_ref_picture(s->avctx, &s->picture[i], &s1->picture[i])) < 0) return ret; } #define UPDATE_PICTURE(pic)\ do {\ ff_mpeg_unref_picture(s->avctx, &s->pic);\ if (s1->pic.f->buf[0])\ ret = ff_mpeg_ref_picture(s->avctx, &s->pic, &s1->pic);\ else\ ret = ff_update_picture_tables(&s->pic, &s1->pic);\ if (ret < 0)\ return ret;\ } while (0) UPDATE_PICTURE(current_picture); UPDATE_PICTURE(last_picture); UPDATE_PICTURE(next_picture); #define REBASE_PICTURE(pic, new_ctx, old_ctx) \ ((pic && pic >= old_ctx->picture && \ pic < old_ctx->picture + MAX_PICTURE_COUNT) ? \ &new_ctx->picture[pic - old_ctx->picture] : NULL) s->last_picture_ptr = REBASE_PICTURE(s1->last_picture_ptr, s, s1); s->current_picture_ptr = REBASE_PICTURE(s1->current_picture_ptr, s, s1); s->next_picture_ptr = REBASE_PICTURE(s1->next_picture_ptr, s, s1); // Error/bug resilience s->next_p_frame_damaged = s1->next_p_frame_damaged; s->workaround_bugs = s1->workaround_bugs; // MPEG-4 timing info memcpy(&s->last_time_base, &s1->last_time_base, (char *) &s1->pb_field_time + sizeof(s1->pb_field_time) - (char *) &s1->last_time_base); // B-frame info s->max_b_frames = s1->max_b_frames; s->low_delay = s1->low_delay; s->droppable = s1->droppable; // DivX handling (doesn't work) s->divx_packed = s1->divx_packed; if (s1->bitstream_buffer) { if (s1->bitstream_buffer_size + AV_INPUT_BUFFER_PADDING_SIZE > s->allocated_bitstream_buffer_size) av_fast_malloc(&s->bitstream_buffer, &s->allocated_bitstream_buffer_size, s1->allocated_bitstream_buffer_size); s->bitstream_buffer_size = s1->bitstream_buffer_size; memcpy(s->bitstream_buffer, s1->bitstream_buffer, s1->bitstream_buffer_size); memset(s->bitstream_buffer + s->bitstream_buffer_size, 0, AV_INPUT_BUFFER_PADDING_SIZE); } // linesize-dependent scratch buffer allocation if (!s->sc.edge_emu_buffer) if (s1->linesize) { if (ff_mpeg_framesize_alloc(s->avctx, &s->me, &s->sc, s1->linesize) < 0) { av_log(s->avctx, AV_LOG_ERROR, "Failed to allocate context " "scratch buffers.\n"); return AVERROR(ENOMEM); } } else { av_log(s->avctx, AV_LOG_ERROR, "Context scratch buffers could not " "be allocated due to unknown size.\n"); return AVERROR_BUG; } // MPEG-2/interlacing info memcpy(&s->progressive_sequence, &s1->progressive_sequence, (char *) &s1->rtp_mode - (char *) &s1->progressive_sequence); if (!s1->first_field) { s->last_pict_type = s1->pict_type; if (s1->current_picture_ptr) s->last_lambda_for[s1->pict_type] = s1->current_picture_ptr->f->quality; } return 0; } /** * Set the given MpegEncContext to common defaults * (same for encoding and decoding). * The changed fields will not depend upon the * prior state of the MpegEncContext. */ void ff_mpv_common_defaults(MpegEncContext *s) { s->y_dc_scale_table = s->c_dc_scale_table = ff_mpeg1_dc_scale_table; s->chroma_qscale_table = ff_default_chroma_qscale_table; s->progressive_frame = 1; s->progressive_sequence = 1; s->picture_structure = PICT_FRAME; s->coded_picture_number = 0; s->picture_number = 0; s->f_code = 1; s->b_code = 1; s->slice_context_count = 1; } /** * Set the given MpegEncContext to defaults for decoding. * the changed fields will not depend upon * the prior state of the MpegEncContext. */ void ff_mpv_decode_defaults(MpegEncContext *s) { ff_mpv_common_defaults(s); } /** * Initialize and allocates MpegEncContext fields dependent on the resolution. */ static int init_context_frame(MpegEncContext *s) { int y_size, c_size, yc_size, i, mb_array_size, mv_table_size, x, y; s->mb_width = (s->width + 15) / 16; s->mb_stride = s->mb_width + 1; s->b8_stride = s->mb_width * 2 + 1; mb_array_size = s->mb_height * s->mb_stride; mv_table_size = (s->mb_height + 2) * s->mb_stride + 1; /* set default edge pos, will be overridden * in decode_header if needed */ s->h_edge_pos = s->mb_width * 16; s->v_edge_pos = s->mb_height * 16; s->mb_num = s->mb_width * s->mb_height; s->block_wrap[0] = s->block_wrap[1] = s->block_wrap[2] = s->block_wrap[3] = s->b8_stride; s->block_wrap[4] = s->block_wrap[5] = s->mb_stride; y_size = s->b8_stride * (2 * s->mb_height + 1); c_size = s->mb_stride * (s->mb_height + 1); yc_size = y_size + 2 * c_size; FF_ALLOCZ_OR_GOTO(s->avctx, s->mb_index2xy, (s->mb_num + 1) * sizeof(int), fail); // error resilience code looks cleaner with this for (y = 0; y < s->mb_height; y++) for (x = 0; x < s->mb_width; x++) s->mb_index2xy[x + y * s->mb_width] = x + y * s->mb_stride; s->mb_index2xy[s->mb_height * s->mb_width] = (s->mb_height - 1) * s->mb_stride + s->mb_width; // FIXME really needed? if (s->encoding) { /* Allocate MV tables */ FF_ALLOCZ_OR_GOTO(s->avctx, s->p_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail); FF_ALLOCZ_OR_GOTO(s->avctx, s->b_forw_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail); FF_ALLOCZ_OR_GOTO(s->avctx, s->b_back_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail); FF_ALLOCZ_OR_GOTO(s->avctx, s->b_bidir_forw_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail); FF_ALLOCZ_OR_GOTO(s->avctx, s->b_bidir_back_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail); FF_ALLOCZ_OR_GOTO(s->avctx, s->b_direct_mv_table_base, mv_table_size * 2 * sizeof(int16_t), fail); s->p_mv_table = s->p_mv_table_base + s->mb_stride + 1; s->b_forw_mv_table = s->b_forw_mv_table_base + s->mb_stride + 1; s->b_back_mv_table = s->b_back_mv_table_base + s->mb_stride + 1; s->b_bidir_forw_mv_table = s->b_bidir_forw_mv_table_base + s->mb_stride + 1; s->b_bidir_back_mv_table = s->b_bidir_back_mv_table_base + s->mb_stride + 1; s->b_direct_mv_table = s->b_direct_mv_table_base + s->mb_stride + 1; /* Allocate MB type table */ FF_ALLOCZ_OR_GOTO(s->avctx, s->mb_type, mb_array_size * sizeof(uint16_t), fail); // needed for encoding FF_ALLOCZ_OR_GOTO(s->avctx, s->lambda_table, mb_array_size * sizeof(int), fail); FF_ALLOC_OR_GOTO(s->avctx, s->cplx_tab, mb_array_size * sizeof(float), fail); FF_ALLOC_OR_GOTO(s->avctx, s->bits_tab, mb_array_size * sizeof(float), fail); } if (s->codec_id == AV_CODEC_ID_MPEG4 || (s->avctx->flags & AV_CODEC_FLAG_INTERLACED_ME)) { /* interlaced direct mode decoding tables */ for (i = 0; i < 2; i++) { int j, k; for (j = 0; j < 2; j++) { for (k = 0; k < 2; k++) { FF_ALLOCZ_OR_GOTO(s->avctx, s->b_field_mv_table_base[i][j][k], mv_table_size * 2 * sizeof(int16_t), fail); s->b_field_mv_table[i][j][k] = s->b_field_mv_table_base[i][j][k] + s->mb_stride + 1; } FF_ALLOCZ_OR_GOTO(s->avctx, s->b_field_select_table [i][j], mb_array_size * 2 * sizeof(uint8_t), fail); FF_ALLOCZ_OR_GOTO(s->avctx, s->p_field_mv_table_base[i][j], mv_table_size * 2 * sizeof(int16_t), fail); s->p_field_mv_table[i][j] = s->p_field_mv_table_base[i][j] + s->mb_stride + 1; } FF_ALLOCZ_OR_GOTO(s->avctx, s->p_field_select_table[i], mb_array_size * 2 * sizeof(uint8_t), fail); } } if (s->out_format == FMT_H263) { /* cbp values */ FF_ALLOCZ_OR_GOTO(s->avctx, s->coded_block_base, y_size, fail); s->coded_block = s->coded_block_base + s->b8_stride + 1; /* cbp, ac_pred, pred_dir */ FF_ALLOCZ_OR_GOTO(s->avctx, s->cbp_table, mb_array_size * sizeof(uint8_t), fail); FF_ALLOCZ_OR_GOTO(s->avctx, s->pred_dir_table, mb_array_size * sizeof(uint8_t), fail); } if (s->h263_pred || s->h263_plus || !s->encoding) { /* dc values */ // MN: we need these for error resilience of intra-frames FF_ALLOCZ_OR_GOTO(s->avctx, s->dc_val_base, yc_size * sizeof(int16_t), fail); s->dc_val[0] = s->dc_val_base + s->b8_stride + 1; s->dc_val[1] = s->dc_val_base + y_size + s->mb_stride + 1; s->dc_val[2] = s->dc_val[1] + c_size; for (i = 0; i < yc_size; i++) s->dc_val_base[i] = 1024; } /* which mb is a intra block */ FF_ALLOCZ_OR_GOTO(s->avctx, s->mbintra_table, mb_array_size, fail); memset(s->mbintra_table, 1, mb_array_size); /* init macroblock skip table */ FF_ALLOCZ_OR_GOTO(s->avctx, s->mbskip_table, mb_array_size + 2, fail); // Note the + 1 is for a quicker MPEG-4 slice_end detection return ff_mpeg_er_init(s); fail: return AVERROR(ENOMEM); } /** * init common structure for both encoder and decoder. * this assumes that some variables like width/height are already set */ av_cold int ff_mpv_common_init(MpegEncContext *s) { int i; int nb_slices = (HAVE_THREADS && s->avctx->active_thread_type & FF_THREAD_SLICE) ? s->avctx->thread_count : 1; if (s->encoding && s->avctx->slices) nb_slices = s->avctx->slices; if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO && !s->progressive_sequence) s->mb_height = (s->height + 31) / 32 * 2; else s->mb_height = (s->height + 15) / 16; if (s->avctx->pix_fmt == AV_PIX_FMT_NONE) { av_log(s->avctx, AV_LOG_ERROR, "decoding to AV_PIX_FMT_NONE is not supported.\n"); return -1; } if (nb_slices > MAX_THREADS || (nb_slices > s->mb_height && s->mb_height)) { int max_slices; if (s->mb_height) max_slices = FFMIN(MAX_THREADS, s->mb_height); else max_slices = MAX_THREADS; av_log(s->avctx, AV_LOG_WARNING, "too many threads/slices (%d)," " reducing to %d\n", nb_slices, max_slices); nb_slices = max_slices; } if ((s->width || s->height) && av_image_check_size(s->width, s->height, 0, s->avctx)) return -1; dct_init(s); /* set chroma shifts */ av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt, &s->chroma_x_shift, &s->chroma_y_shift); /* convert fourcc to upper case */ s->codec_tag = avpriv_toupper4(s->avctx->codec_tag); FF_ALLOCZ_OR_GOTO(s->avctx, s->picture, MAX_PICTURE_COUNT * sizeof(Picture), fail); for (i = 0; i < MAX_PICTURE_COUNT; i++) { s->picture[i].f = av_frame_alloc(); if (!s->picture[i].f) goto fail; } memset(&s->next_picture, 0, sizeof(s->next_picture)); memset(&s->last_picture, 0, sizeof(s->last_picture)); memset(&s->current_picture, 0, sizeof(s->current_picture)); memset(&s->new_picture, 0, sizeof(s->new_picture)); s->next_picture.f = av_frame_alloc(); if (!s->next_picture.f) goto fail; s->last_picture.f = av_frame_alloc(); if (!s->last_picture.f) goto fail; s->current_picture.f = av_frame_alloc(); if (!s->current_picture.f) goto fail; s->new_picture.f = av_frame_alloc(); if (!s->new_picture.f) goto fail; if (s->width && s->height) { if (init_context_frame(s)) goto fail; s->parse_context.state = -1; } s->context_initialized = 1; s->thread_context[0] = s; if (s->width && s->height) { if (nb_slices > 1) { for (i = 1; i < nb_slices; i++) { s->thread_context[i] = av_malloc(sizeof(MpegEncContext)); memcpy(s->thread_context[i], s, sizeof(MpegEncContext)); } for (i = 0; i < nb_slices; i++) { if (init_duplicate_context(s->thread_context[i]) < 0) goto fail; s->thread_context[i]->start_mb_y = (s->mb_height * (i) + nb_slices / 2) / nb_slices; s->thread_context[i]->end_mb_y = (s->mb_height * (i + 1) + nb_slices / 2) / nb_slices; } } else { if (init_duplicate_context(s) < 0) goto fail; s->start_mb_y = 0; s->end_mb_y = s->mb_height; } s->slice_context_count = nb_slices; } return 0; fail: ff_mpv_common_end(s); return -1; } /** * Frees and resets MpegEncContext fields depending on the resolution. * Is used during resolution changes to avoid a full reinitialization of the * codec. */ static void free_context_frame(MpegEncContext *s) { int i, j, k; av_freep(&s->mb_type); av_freep(&s->p_mv_table_base); av_freep(&s->b_forw_mv_table_base); av_freep(&s->b_back_mv_table_base); av_freep(&s->b_bidir_forw_mv_table_base); av_freep(&s->b_bidir_back_mv_table_base); av_freep(&s->b_direct_mv_table_base); s->p_mv_table = NULL; s->b_forw_mv_table = NULL; s->b_back_mv_table = NULL; s->b_bidir_forw_mv_table = NULL; s->b_bidir_back_mv_table = NULL; s->b_direct_mv_table = NULL; for (i = 0; i < 2; i++) { for (j = 0; j < 2; j++) { for (k = 0; k < 2; k++) { av_freep(&s->b_field_mv_table_base[i][j][k]); s->b_field_mv_table[i][j][k] = NULL; } av_freep(&s->b_field_select_table[i][j]); av_freep(&s->p_field_mv_table_base[i][j]); s->p_field_mv_table[i][j] = NULL; } av_freep(&s->p_field_select_table[i]); } av_freep(&s->dc_val_base); av_freep(&s->coded_block_base); av_freep(&s->mbintra_table); av_freep(&s->cbp_table); av_freep(&s->pred_dir_table); av_freep(&s->mbskip_table); av_freep(&s->er.error_status_table); av_freep(&s->er.er_temp_buffer); av_freep(&s->mb_index2xy); av_freep(&s->lambda_table); av_freep(&s->cplx_tab); av_freep(&s->bits_tab); s->linesize = s->uvlinesize = 0; } int ff_mpv_common_frame_size_change(MpegEncContext *s) { int i, err = 0; if (s->slice_context_count > 1) { for (i = 0; i < s->slice_context_count; i++) { free_duplicate_context(s->thread_context[i]); } for (i = 1; i < s->slice_context_count; i++) { av_freep(&s->thread_context[i]); } } else free_duplicate_context(s); free_context_frame(s); if (s->picture) for (i = 0; i < MAX_PICTURE_COUNT; i++) { s->picture[i].needs_realloc = 1; } s->last_picture_ptr = s->next_picture_ptr = s->current_picture_ptr = NULL; // init if (s->codec_id == AV_CODEC_ID_MPEG2VIDEO && !s->progressive_sequence) s->mb_height = (s->height + 31) / 32 * 2; else s->mb_height = (s->height + 15) / 16; if ((s->width || s->height) && (err = av_image_check_size(s->width, s->height, 0, s->avctx)) < 0) goto fail; if ((err = init_context_frame(s))) goto fail; s->thread_context[0] = s; if (s->width && s->height) { int nb_slices = s->slice_context_count; if (nb_slices > 1) { for (i = 1; i < nb_slices; i++) { s->thread_context[i] = av_malloc(sizeof(MpegEncContext)); memcpy(s->thread_context[i], s, sizeof(MpegEncContext)); } for (i = 0; i < nb_slices; i++) { if ((err = init_duplicate_context(s->thread_context[i])) < 0) goto fail; s->thread_context[i]->start_mb_y = (s->mb_height * (i) + nb_slices / 2) / nb_slices; s->thread_context[i]->end_mb_y = (s->mb_height * (i + 1) + nb_slices / 2) / nb_slices; } } else { if (init_duplicate_context(s) < 0) goto fail; s->start_mb_y = 0; s->end_mb_y = s->mb_height; } s->slice_context_count = nb_slices; } return 0; fail: ff_mpv_common_end(s); return err; } /* init common structure for both encoder and decoder */ void ff_mpv_common_end(MpegEncContext *s) { int i; if (s->slice_context_count > 1) { for (i = 0; i < s->slice_context_count; i++) { free_duplicate_context(s->thread_context[i]); } for (i = 1; i < s->slice_context_count; i++) { av_freep(&s->thread_context[i]); } s->slice_context_count = 1; } else free_duplicate_context(s); av_freep(&s->parse_context.buffer); s->parse_context.buffer_size = 0; av_freep(&s->bitstream_buffer); s->allocated_bitstream_buffer_size = 0; if (s->picture) { for (i = 0; i < MAX_PICTURE_COUNT; i++) { ff_free_picture_tables(&s->picture[i]); ff_mpeg_unref_picture(s->avctx, &s->picture[i]); av_frame_free(&s->picture[i].f); } } av_freep(&s->picture); ff_free_picture_tables(&s->last_picture); ff_mpeg_unref_picture(s->avctx, &s->last_picture); av_frame_free(&s->last_picture.f); ff_free_picture_tables(&s->current_picture); ff_mpeg_unref_picture(s->avctx, &s->current_picture); av_frame_free(&s->current_picture.f); ff_free_picture_tables(&s->next_picture); ff_mpeg_unref_picture(s->avctx, &s->next_picture); av_frame_free(&s->next_picture.f); ff_free_picture_tables(&s->new_picture); ff_mpeg_unref_picture(s->avctx, &s->new_picture); av_frame_free(&s->new_picture.f); free_context_frame(s); s->context_initialized = 0; s->last_picture_ptr = s->next_picture_ptr = s->current_picture_ptr = NULL; s->linesize = s->uvlinesize = 0; } /** * generic function called after decoding * the header and before a frame is decoded. */ int ff_mpv_frame_start(MpegEncContext *s, AVCodecContext *avctx) { int i, ret; Picture *pic; s->mb_skipped = 0; /* mark & release old frames */ if (s->pict_type != AV_PICTURE_TYPE_B && s->last_picture_ptr && s->last_picture_ptr != s->next_picture_ptr && s->last_picture_ptr->f->buf[0]) { ff_mpeg_unref_picture(s->avctx, s->last_picture_ptr); } /* release forgotten pictures */ /* if (MPEG-124 / H.263) */ for (i = 0; i < MAX_PICTURE_COUNT; i++) { if (&s->picture[i] != s->last_picture_ptr && &s->picture[i] != s->next_picture_ptr && s->picture[i].reference && !s->picture[i].needs_realloc) { ff_mpeg_unref_picture(s->avctx, &s->picture[i]); } } ff_mpeg_unref_picture(s->avctx, &s->current_picture); /* release non reference frames */ for (i = 0; i < MAX_PICTURE_COUNT; i++) { if (!s->picture[i].reference) ff_mpeg_unref_picture(s->avctx, &s->picture[i]); } if (s->current_picture_ptr && !s->current_picture_ptr->f->buf[0]) { // we already have a unused image // (maybe it was set before reading the header) pic = s->current_picture_ptr; } else { i = ff_find_unused_picture(s->avctx, s->picture, 0); if (i < 0) { av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n"); return i; } pic = &s->picture[i]; } pic->reference = 0; if (!s->droppable) { if (s->pict_type != AV_PICTURE_TYPE_B) pic->reference = 3; } pic->f->coded_picture_number = s->coded_picture_number++; if (alloc_picture(s, pic, 0) < 0) return -1; s->current_picture_ptr = pic; // FIXME use only the vars from current_pic s->current_picture_ptr->f->top_field_first = s->top_field_first; if (s->codec_id == AV_CODEC_ID_MPEG1VIDEO || s->codec_id == AV_CODEC_ID_MPEG2VIDEO) { if (s->picture_structure != PICT_FRAME) s->current_picture_ptr->f->top_field_first = (s->picture_structure == PICT_TOP_FIELD) == s->first_field; } s->current_picture_ptr->f->interlaced_frame = !s->progressive_frame && !s->progressive_sequence; s->current_picture_ptr->field_picture = s->picture_structure != PICT_FRAME; s->current_picture_ptr->f->pict_type = s->pict_type; // if (s->avctx->flags && AV_CODEC_FLAG_QSCALE) // s->current_picture_ptr->quality = s->new_picture_ptr->quality; s->current_picture_ptr->f->key_frame = s->pict_type == AV_PICTURE_TYPE_I; if ((ret = ff_mpeg_ref_picture(s->avctx, &s->current_picture, s->current_picture_ptr)) < 0) return ret; if (s->pict_type != AV_PICTURE_TYPE_B) { s->last_picture_ptr = s->next_picture_ptr; if (!s->droppable) s->next_picture_ptr = s->current_picture_ptr; } ff_dlog(s->avctx, "L%p N%p C%p L%p N%p C%p type:%d drop:%d\n", s->last_picture_ptr, s->next_picture_ptr,s->current_picture_ptr, s->last_picture_ptr ? s->last_picture_ptr->f->data[0] : NULL, s->next_picture_ptr ? s->next_picture_ptr->f->data[0] : NULL, s->current_picture_ptr ? s->current_picture_ptr->f->data[0] : NULL, s->pict_type, s->droppable); if ((!s->last_picture_ptr || !s->last_picture_ptr->f->buf[0]) && (s->pict_type != AV_PICTURE_TYPE_I || s->picture_structure != PICT_FRAME)) { int h_chroma_shift, v_chroma_shift; av_pix_fmt_get_chroma_sub_sample(s->avctx->pix_fmt, &h_chroma_shift, &v_chroma_shift); if (s->pict_type != AV_PICTURE_TYPE_I) av_log(avctx, AV_LOG_ERROR, "warning: first frame is no keyframe\n"); else if (s->picture_structure != PICT_FRAME) av_log(avctx, AV_LOG_INFO, "allocate dummy last picture for field based first keyframe\n"); /* Allocate a dummy frame */ i = ff_find_unused_picture(s->avctx, s->picture, 0); if (i < 0) { av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n"); return i; } s->last_picture_ptr = &s->picture[i]; s->last_picture_ptr->reference = 3; s->last_picture_ptr->f->pict_type = AV_PICTURE_TYPE_I; if (alloc_picture(s, s->last_picture_ptr, 0) < 0) { s->last_picture_ptr = NULL; return -1; } memset(s->last_picture_ptr->f->data[0], 0, avctx->height * s->last_picture_ptr->f->linesize[0]); memset(s->last_picture_ptr->f->data[1], 0x80, (avctx->height >> v_chroma_shift) * s->last_picture_ptr->f->linesize[1]); memset(s->last_picture_ptr->f->data[2], 0x80, (avctx->height >> v_chroma_shift) * s->last_picture_ptr->f->linesize[2]); ff_thread_report_progress(&s->last_picture_ptr->tf, INT_MAX, 0); ff_thread_report_progress(&s->last_picture_ptr->tf, INT_MAX, 1); } if ((!s->next_picture_ptr || !s->next_picture_ptr->f->buf[0]) && s->pict_type == AV_PICTURE_TYPE_B) { /* Allocate a dummy frame */ i = ff_find_unused_picture(s->avctx, s->picture, 0); if (i < 0) { av_log(s->avctx, AV_LOG_ERROR, "no frame buffer available\n"); return i; } s->next_picture_ptr = &s->picture[i]; s->next_picture_ptr->reference = 3; s->next_picture_ptr->f->pict_type = AV_PICTURE_TYPE_I; if (alloc_picture(s, s->next_picture_ptr, 0) < 0) { s->next_picture_ptr = NULL; return -1; } ff_thread_report_progress(&s->next_picture_ptr->tf, INT_MAX, 0); ff_thread_report_progress(&s->next_picture_ptr->tf, INT_MAX, 1); } if (s->last_picture_ptr) { ff_mpeg_unref_picture(s->avctx, &s->last_picture); if (s->last_picture_ptr->f->buf[0] && (ret = ff_mpeg_ref_picture(s->avctx, &s->last_picture, s->last_picture_ptr)) < 0) return ret; } if (s->next_picture_ptr) { ff_mpeg_unref_picture(s->avctx, &s->next_picture); if (s->next_picture_ptr->f->buf[0] && (ret = ff_mpeg_ref_picture(s->avctx, &s->next_picture, s->next_picture_ptr)) < 0) return ret; } if (s->pict_type != AV_PICTURE_TYPE_I && !(s->last_picture_ptr && s->last_picture_ptr->f->buf[0])) { av_log(s, AV_LOG_ERROR, "Non-reference picture received and no reference available\n"); return AVERROR_INVALIDDATA; } if (s->picture_structure!= PICT_FRAME) { int i; for (i = 0; i < 4; i++) { if (s->picture_structure == PICT_BOTTOM_FIELD) { s->current_picture.f->data[i] += s->current_picture.f->linesize[i]; } s->current_picture.f->linesize[i] *= 2; s->last_picture.f->linesize[i] *= 2; s->next_picture.f->linesize[i] *= 2; } } /* set dequantizer, we can't do it during init as * it might change for MPEG-4 and we can't do it in the header * decode as init is not called for MPEG-4 there yet */ if (s->mpeg_quant || s->codec_id == AV_CODEC_ID_MPEG2VIDEO) { s->dct_unquantize_intra = s->dct_unquantize_mpeg2_intra; s->dct_unquantize_inter = s->dct_unquantize_mpeg2_inter; } else if (s->out_format == FMT_H263 || s->out_format == FMT_H261) { s->dct_unquantize_intra = s->dct_unquantize_h263_intra; s->dct_unquantize_inter = s->dct_unquantize_h263_inter; } else { s->dct_unquantize_intra = s->dct_unquantize_mpeg1_intra; s->dct_unquantize_inter = s->dct_unquantize_mpeg1_inter; } #if FF_API_XVMC FF_DISABLE_DEPRECATION_WARNINGS if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration) return ff_xvmc_field_start(s, avctx); FF_ENABLE_DEPRECATION_WARNINGS #endif /* FF_API_XVMC */ return 0; } /* called after a frame has been decoded. */ void ff_mpv_frame_end(MpegEncContext *s) { #if FF_API_XVMC FF_DISABLE_DEPRECATION_WARNINGS /* redraw edges for the frame if decoding didn't complete */ // just to make sure that all data is rendered. if (CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration) { ff_xvmc_field_end(s); } else FF_ENABLE_DEPRECATION_WARNINGS #endif /* FF_API_XVMC */ emms_c(); if (s->current_picture.reference) ff_thread_report_progress(&s->current_picture_ptr->tf, INT_MAX, 0); } /** * Print debugging info for the given picture. */ void ff_print_debug_info(MpegEncContext *s, Picture *p) { AVFrame *pict; if (s->avctx->hwaccel || !p || !p->mb_type) return; pict = p->f; if (s->avctx->debug & (FF_DEBUG_SKIP | FF_DEBUG_QP | FF_DEBUG_MB_TYPE)) { int x,y; av_log(s->avctx,AV_LOG_DEBUG,"New frame, type: "); switch (pict->pict_type) { case AV_PICTURE_TYPE_I: av_log(s->avctx,AV_LOG_DEBUG,"I\n"); break; case AV_PICTURE_TYPE_P: av_log(s->avctx,AV_LOG_DEBUG,"P\n"); break; case AV_PICTURE_TYPE_B: av_log(s->avctx,AV_LOG_DEBUG,"B\n"); break; case AV_PICTURE_TYPE_S: av_log(s->avctx,AV_LOG_DEBUG,"S\n"); break; case AV_PICTURE_TYPE_SI: av_log(s->avctx,AV_LOG_DEBUG,"SI\n"); break; case AV_PICTURE_TYPE_SP: av_log(s->avctx,AV_LOG_DEBUG,"SP\n"); break; } for (y = 0; y < s->mb_height; y++) { for (x = 0; x < s->mb_width; x++) { if (s->avctx->debug & FF_DEBUG_SKIP) { int count = s->mbskip_table[x + y * s->mb_stride]; if (count > 9) count = 9; av_log(s->avctx, AV_LOG_DEBUG, "%1d", count); } if (s->avctx->debug & FF_DEBUG_QP) { av_log(s->avctx, AV_LOG_DEBUG, "%2d", p->qscale_table[x + y * s->mb_stride]); } if (s->avctx->debug & FF_DEBUG_MB_TYPE) { int mb_type = p->mb_type[x + y * s->mb_stride]; // Type & MV direction if (IS_PCM(mb_type)) av_log(s->avctx, AV_LOG_DEBUG, "P"); else if (IS_INTRA(mb_type) && IS_ACPRED(mb_type)) av_log(s->avctx, AV_LOG_DEBUG, "A"); else if (IS_INTRA4x4(mb_type)) av_log(s->avctx, AV_LOG_DEBUG, "i"); else if (IS_INTRA16x16(mb_type)) av_log(s->avctx, AV_LOG_DEBUG, "I"); else if (IS_DIRECT(mb_type) && IS_SKIP(mb_type)) av_log(s->avctx, AV_LOG_DEBUG, "d"); else if (IS_DIRECT(mb_type)) av_log(s->avctx, AV_LOG_DEBUG, "D"); else if (IS_GMC(mb_type) && IS_SKIP(mb_type)) av_log(s->avctx, AV_LOG_DEBUG, "g"); else if (IS_GMC(mb_type)) av_log(s->avctx, AV_LOG_DEBUG, "G"); else if (IS_SKIP(mb_type)) av_log(s->avctx, AV_LOG_DEBUG, "S"); else if (!USES_LIST(mb_type, 1)) av_log(s->avctx, AV_LOG_DEBUG, ">"); else if (!USES_LIST(mb_type, 0)) av_log(s->avctx, AV_LOG_DEBUG, "<"); else { assert(USES_LIST(mb_type, 0) && USES_LIST(mb_type, 1)); av_log(s->avctx, AV_LOG_DEBUG, "X"); } // segmentation if (IS_8X8(mb_type)) av_log(s->avctx, AV_LOG_DEBUG, "+"); else if (IS_16X8(mb_type)) av_log(s->avctx, AV_LOG_DEBUG, "-"); else if (IS_8X16(mb_type)) av_log(s->avctx, AV_LOG_DEBUG, "|"); else if (IS_INTRA(mb_type) || IS_16X16(mb_type)) av_log(s->avctx, AV_LOG_DEBUG, " "); else av_log(s->avctx, AV_LOG_DEBUG, "?"); if (IS_INTERLACED(mb_type)) av_log(s->avctx, AV_LOG_DEBUG, "="); else av_log(s->avctx, AV_LOG_DEBUG, " "); } } av_log(s->avctx, AV_LOG_DEBUG, "\n"); } } } /** * find the lowest MB row referenced in the MVs */ static int lowest_referenced_row(MpegEncContext *s, int dir) { int my_max = INT_MIN, my_min = INT_MAX, qpel_shift = !s->quarter_sample; int my, off, i, mvs; if (s->picture_structure != PICT_FRAME || s->mcsel) goto unhandled; switch (s->mv_type) { case MV_TYPE_16X16: mvs = 1; break; case MV_TYPE_16X8: mvs = 2; break; case MV_TYPE_8X8: mvs = 4; break; default: goto unhandled; } for (i = 0; i < mvs; i++) { my = s->mv[dir][i][1]<> 6; return FFMIN(FFMAX(s->mb_y + off, 0), s->mb_height-1); unhandled: return s->mb_height-1; } /* put block[] to dest[] */ static inline void put_dct(MpegEncContext *s, int16_t *block, int i, uint8_t *dest, int line_size, int qscale) { s->dct_unquantize_intra(s, block, i, qscale); s->idsp.idct_put(dest, line_size, block); } /* add block[] to dest[] */ static inline void add_dct(MpegEncContext *s, int16_t *block, int i, uint8_t *dest, int line_size) { if (s->block_last_index[i] >= 0) { s->idsp.idct_add(dest, line_size, block); } } static inline void add_dequant_dct(MpegEncContext *s, int16_t *block, int i, uint8_t *dest, int line_size, int qscale) { if (s->block_last_index[i] >= 0) { s->dct_unquantize_inter(s, block, i, qscale); s->idsp.idct_add(dest, line_size, block); } } /** * Clean dc, ac, coded_block for the current non-intra MB. */ void ff_clean_intra_table_entries(MpegEncContext *s) { int wrap = s->b8_stride; int xy = s->block_index[0]; s->dc_val[0][xy ] = s->dc_val[0][xy + 1 ] = s->dc_val[0][xy + wrap] = s->dc_val[0][xy + 1 + wrap] = 1024; /* ac pred */ memset(s->ac_val[0][xy ], 0, 32 * sizeof(int16_t)); memset(s->ac_val[0][xy + wrap], 0, 32 * sizeof(int16_t)); if (s->msmpeg4_version>=3) { s->coded_block[xy ] = s->coded_block[xy + 1 ] = s->coded_block[xy + wrap] = s->coded_block[xy + 1 + wrap] = 0; } /* chroma */ wrap = s->mb_stride; xy = s->mb_x + s->mb_y * wrap; s->dc_val[1][xy] = s->dc_val[2][xy] = 1024; /* ac pred */ memset(s->ac_val[1][xy], 0, 16 * sizeof(int16_t)); memset(s->ac_val[2][xy], 0, 16 * sizeof(int16_t)); s->mbintra_table[xy]= 0; } /* generic function called after a macroblock has been parsed by the decoder or after it has been encoded by the encoder. Important variables used: s->mb_intra : true if intra macroblock s->mv_dir : motion vector direction s->mv_type : motion vector type s->mv : motion vector s->interlaced_dct : true if interlaced dct used (mpeg2) */ static av_always_inline void mpv_decode_mb_internal(MpegEncContext *s, int16_t block[12][64], int is_mpeg12) { const int mb_xy = s->mb_y * s->mb_stride + s->mb_x; #if FF_API_XVMC FF_DISABLE_DEPRECATION_WARNINGS if(CONFIG_MPEG_XVMC_DECODER && s->avctx->xvmc_acceleration){ ff_xvmc_decode_mb(s);//xvmc uses pblocks return; } FF_ENABLE_DEPRECATION_WARNINGS #endif /* FF_API_XVMC */ if(s->avctx->debug&FF_DEBUG_DCT_COEFF) { /* print DCT coefficients */ int i,j; av_log(s->avctx, AV_LOG_DEBUG, "DCT coeffs of MB at %dx%d:\n", s->mb_x, s->mb_y); for(i=0; i<6; i++){ for(j=0; j<64; j++){ av_log(s->avctx, AV_LOG_DEBUG, "%5d", block[i][s->idsp.idct_permutation[j]]); } av_log(s->avctx, AV_LOG_DEBUG, "\n"); } } s->current_picture.qscale_table[mb_xy] = s->qscale; /* update DC predictors for P macroblocks */ if (!s->mb_intra) { if (!is_mpeg12 && (s->h263_pred || s->h263_aic)) { if(s->mbintra_table[mb_xy]) ff_clean_intra_table_entries(s); } else { s->last_dc[0] = s->last_dc[1] = s->last_dc[2] = 128 << s->intra_dc_precision; } } else if (!is_mpeg12 && (s->h263_pred || s->h263_aic)) s->mbintra_table[mb_xy]=1; if ((s->avctx->flags & AV_CODEC_FLAG_PSNR) || !(s->encoding && (s->intra_only || s->pict_type == AV_PICTURE_TYPE_B) && s->avctx->mb_decision != FF_MB_DECISION_RD)) { // FIXME precalc uint8_t *dest_y, *dest_cb, *dest_cr; int dct_linesize, dct_offset; op_pixels_func (*op_pix)[4]; qpel_mc_func (*op_qpix)[16]; const int linesize = s->current_picture.f->linesize[0]; //not s->linesize as this would be wrong for field pics const int uvlinesize = s->current_picture.f->linesize[1]; const int readable= s->pict_type != AV_PICTURE_TYPE_B || s->encoding || s->avctx->draw_horiz_band; const int block_size = 8; /* avoid copy if macroblock skipped in last frame too */ /* skip only during decoding as we might trash the buffers during encoding a bit */ if(!s->encoding){ uint8_t *mbskip_ptr = &s->mbskip_table[mb_xy]; if (s->mb_skipped) { s->mb_skipped= 0; assert(s->pict_type!=AV_PICTURE_TYPE_I); *mbskip_ptr = 1; } else if(!s->current_picture.reference) { *mbskip_ptr = 1; } else{ *mbskip_ptr = 0; /* not skipped */ } } dct_linesize = linesize << s->interlaced_dct; dct_offset = s->interlaced_dct ? linesize : linesize * block_size; if(readable){ dest_y= s->dest[0]; dest_cb= s->dest[1]; dest_cr= s->dest[2]; }else{ dest_y = s->sc.b_scratchpad; dest_cb= s->sc.b_scratchpad+16*linesize; dest_cr= s->sc.b_scratchpad+32*linesize; } if (!s->mb_intra) { /* motion handling */ /* decoding or more than one mb_type (MC was already done otherwise) */ if(!s->encoding){ if(HAVE_THREADS && s->avctx->active_thread_type&FF_THREAD_FRAME) { if (s->mv_dir & MV_DIR_FORWARD) { ff_thread_await_progress(&s->last_picture_ptr->tf, lowest_referenced_row(s, 0), 0); } if (s->mv_dir & MV_DIR_BACKWARD) { ff_thread_await_progress(&s->next_picture_ptr->tf, lowest_referenced_row(s, 1), 0); } } op_qpix= s->me.qpel_put; if ((!s->no_rounding) || s->pict_type==AV_PICTURE_TYPE_B){ op_pix = s->hdsp.put_pixels_tab; }else{ op_pix = s->hdsp.put_no_rnd_pixels_tab; } if (s->mv_dir & MV_DIR_FORWARD) { ff_mpv_motion(s, dest_y, dest_cb, dest_cr, 0, s->last_picture.f->data, op_pix, op_qpix); op_pix = s->hdsp.avg_pixels_tab; op_qpix= s->me.qpel_avg; } if (s->mv_dir & MV_DIR_BACKWARD) { ff_mpv_motion(s, dest_y, dest_cb, dest_cr, 1, s->next_picture.f->data, op_pix, op_qpix); } } /* skip dequant / idct if we are really late ;) */ if(s->avctx->skip_idct){ if( (s->avctx->skip_idct >= AVDISCARD_NONREF && s->pict_type == AV_PICTURE_TYPE_B) ||(s->avctx->skip_idct >= AVDISCARD_NONKEY && s->pict_type != AV_PICTURE_TYPE_I) || s->avctx->skip_idct >= AVDISCARD_ALL) goto skip_idct; } /* add dct residue */ if(s->encoding || !( s->msmpeg4_version || s->codec_id==AV_CODEC_ID_MPEG1VIDEO || s->codec_id==AV_CODEC_ID_MPEG2VIDEO || (s->codec_id==AV_CODEC_ID_MPEG4 && !s->mpeg_quant))){ add_dequant_dct(s, block[0], 0, dest_y , dct_linesize, s->qscale); add_dequant_dct(s, block[1], 1, dest_y + block_size, dct_linesize, s->qscale); add_dequant_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize, s->qscale); add_dequant_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize, s->qscale); if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) { if (s->chroma_y_shift){ add_dequant_dct(s, block[4], 4, dest_cb, uvlinesize, s->chroma_qscale); add_dequant_dct(s, block[5], 5, dest_cr, uvlinesize, s->chroma_qscale); }else{ dct_linesize >>= 1; dct_offset >>=1; add_dequant_dct(s, block[4], 4, dest_cb, dct_linesize, s->chroma_qscale); add_dequant_dct(s, block[5], 5, dest_cr, dct_linesize, s->chroma_qscale); add_dequant_dct(s, block[6], 6, dest_cb + dct_offset, dct_linesize, s->chroma_qscale); add_dequant_dct(s, block[7], 7, dest_cr + dct_offset, dct_linesize, s->chroma_qscale); } } } else if(is_mpeg12 || (s->codec_id != AV_CODEC_ID_WMV2)){ add_dct(s, block[0], 0, dest_y , dct_linesize); add_dct(s, block[1], 1, dest_y + block_size, dct_linesize); add_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize); add_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize); if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) { if(s->chroma_y_shift){//Chroma420 add_dct(s, block[4], 4, dest_cb, uvlinesize); add_dct(s, block[5], 5, dest_cr, uvlinesize); }else{ //chroma422 dct_linesize = uvlinesize << s->interlaced_dct; dct_offset = s->interlaced_dct ? uvlinesize : uvlinesize * 8; add_dct(s, block[4], 4, dest_cb, dct_linesize); add_dct(s, block[5], 5, dest_cr, dct_linesize); add_dct(s, block[6], 6, dest_cb+dct_offset, dct_linesize); add_dct(s, block[7], 7, dest_cr+dct_offset, dct_linesize); if(!s->chroma_x_shift){//Chroma444 add_dct(s, block[8], 8, dest_cb+8, dct_linesize); add_dct(s, block[9], 9, dest_cr+8, dct_linesize); add_dct(s, block[10], 10, dest_cb+8+dct_offset, dct_linesize); add_dct(s, block[11], 11, dest_cr+8+dct_offset, dct_linesize); } } }//fi gray } else if (CONFIG_WMV2_DECODER || CONFIG_WMV2_ENCODER) { ff_wmv2_add_mb(s, block, dest_y, dest_cb, dest_cr); } } else { /* dct only in intra block */ if(s->encoding || !(s->codec_id==AV_CODEC_ID_MPEG1VIDEO || s->codec_id==AV_CODEC_ID_MPEG2VIDEO)){ put_dct(s, block[0], 0, dest_y , dct_linesize, s->qscale); put_dct(s, block[1], 1, dest_y + block_size, dct_linesize, s->qscale); put_dct(s, block[2], 2, dest_y + dct_offset , dct_linesize, s->qscale); put_dct(s, block[3], 3, dest_y + dct_offset + block_size, dct_linesize, s->qscale); if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) { if(s->chroma_y_shift){ put_dct(s, block[4], 4, dest_cb, uvlinesize, s->chroma_qscale); put_dct(s, block[5], 5, dest_cr, uvlinesize, s->chroma_qscale); }else{ dct_offset >>=1; dct_linesize >>=1; put_dct(s, block[4], 4, dest_cb, dct_linesize, s->chroma_qscale); put_dct(s, block[5], 5, dest_cr, dct_linesize, s->chroma_qscale); put_dct(s, block[6], 6, dest_cb + dct_offset, dct_linesize, s->chroma_qscale); put_dct(s, block[7], 7, dest_cr + dct_offset, dct_linesize, s->chroma_qscale); } } }else{ s->idsp.idct_put(dest_y, dct_linesize, block[0]); s->idsp.idct_put(dest_y + block_size, dct_linesize, block[1]); s->idsp.idct_put(dest_y + dct_offset, dct_linesize, block[2]); s->idsp.idct_put(dest_y + dct_offset + block_size, dct_linesize, block[3]); if (!CONFIG_GRAY || !(s->avctx->flags & AV_CODEC_FLAG_GRAY)) { if(s->chroma_y_shift){ s->idsp.idct_put(dest_cb, uvlinesize, block[4]); s->idsp.idct_put(dest_cr, uvlinesize, block[5]); }else{ dct_linesize = uvlinesize << s->interlaced_dct; dct_offset = s->interlaced_dct ? uvlinesize : uvlinesize * 8; s->idsp.idct_put(dest_cb, dct_linesize, block[4]); s->idsp.idct_put(dest_cr, dct_linesize, block[5]); s->idsp.idct_put(dest_cb + dct_offset, dct_linesize, block[6]); s->idsp.idct_put(dest_cr + dct_offset, dct_linesize, block[7]); if(!s->chroma_x_shift){//Chroma444 s->idsp.idct_put(dest_cb + 8, dct_linesize, block[8]); s->idsp.idct_put(dest_cr + 8, dct_linesize, block[9]); s->idsp.idct_put(dest_cb + 8 + dct_offset, dct_linesize, block[10]); s->idsp.idct_put(dest_cr + 8 + dct_offset, dct_linesize, block[11]); } } }//gray } } skip_idct: if(!readable){ s->hdsp.put_pixels_tab[0][0](s->dest[0], dest_y , linesize,16); s->hdsp.put_pixels_tab[s->chroma_x_shift][0](s->dest[1], dest_cb, uvlinesize,16 >> s->chroma_y_shift); s->hdsp.put_pixels_tab[s->chroma_x_shift][0](s->dest[2], dest_cr, uvlinesize,16 >> s->chroma_y_shift); } } } void ff_mpv_decode_mb(MpegEncContext *s, int16_t block[12][64]) { #if !CONFIG_SMALL if(s->out_format == FMT_MPEG1) { mpv_decode_mb_internal(s, block, 1); } else #endif mpv_decode_mb_internal(s, block, 0); } void ff_mpeg_draw_horiz_band(MpegEncContext *s, int y, int h) { ff_draw_horiz_band(s->avctx, s->current_picture.f, s->last_picture.f, y, h, s->picture_structure, s->first_field, s->low_delay); } void ff_init_block_index(MpegEncContext *s){ //FIXME maybe rename const int linesize = s->current_picture.f->linesize[0]; //not s->linesize as this would be wrong for field pics const int uvlinesize = s->current_picture.f->linesize[1]; const int mb_size= 4; s->block_index[0]= s->b8_stride*(s->mb_y*2 ) - 2 + s->mb_x*2; s->block_index[1]= s->b8_stride*(s->mb_y*2 ) - 1 + s->mb_x*2; s->block_index[2]= s->b8_stride*(s->mb_y*2 + 1) - 2 + s->mb_x*2; s->block_index[3]= s->b8_stride*(s->mb_y*2 + 1) - 1 + s->mb_x*2; s->block_index[4]= s->mb_stride*(s->mb_y + 1) + s->b8_stride*s->mb_height*2 + s->mb_x - 1; s->block_index[5]= s->mb_stride*(s->mb_y + s->mb_height + 2) + s->b8_stride*s->mb_height*2 + s->mb_x - 1; //block_index is not used by mpeg2, so it is not affected by chroma_format s->dest[0] = s->current_picture.f->data[0] + (s->mb_x - 1) * (1 << mb_size); s->dest[1] = s->current_picture.f->data[1] + (s->mb_x - 1) * (1 << (mb_size - s->chroma_x_shift)); s->dest[2] = s->current_picture.f->data[2] + (s->mb_x - 1) * (1 << (mb_size - s->chroma_x_shift)); if(!(s->pict_type==AV_PICTURE_TYPE_B && s->avctx->draw_horiz_band && s->picture_structure==PICT_FRAME)) { if(s->picture_structure==PICT_FRAME){ s->dest[0] += s->mb_y * linesize << mb_size; s->dest[1] += s->mb_y * uvlinesize << (mb_size - s->chroma_y_shift); s->dest[2] += s->mb_y * uvlinesize << (mb_size - s->chroma_y_shift); }else{ s->dest[0] += (s->mb_y>>1) * linesize << mb_size; s->dest[1] += (s->mb_y>>1) * uvlinesize << (mb_size - s->chroma_y_shift); s->dest[2] += (s->mb_y>>1) * uvlinesize << (mb_size - s->chroma_y_shift); assert((s->mb_y&1) == (s->picture_structure == PICT_BOTTOM_FIELD)); } } } void ff_mpeg_flush(AVCodecContext *avctx){ int i; MpegEncContext *s = avctx->priv_data; if (!s || !s->picture) return; for (i = 0; i < MAX_PICTURE_COUNT; i++) ff_mpeg_unref_picture(s->avctx, &s->picture[i]); s->current_picture_ptr = s->last_picture_ptr = s->next_picture_ptr = NULL; ff_mpeg_unref_picture(s->avctx, &s->current_picture); ff_mpeg_unref_picture(s->avctx, &s->last_picture); ff_mpeg_unref_picture(s->avctx, &s->next_picture); s->mb_x= s->mb_y= 0; s->parse_context.state= -1; s->parse_context.frame_start_found= 0; s->parse_context.overread= 0; s->parse_context.overread_index= 0; s->parse_context.index= 0; s->parse_context.last_index= 0; s->bitstream_buffer_size=0; s->pp_time=0; } /** * set qscale and update qscale dependent variables. */ void ff_set_qscale(MpegEncContext * s, int qscale) { if (qscale < 1) qscale = 1; else if (qscale > 31) qscale = 31; s->qscale = qscale; s->chroma_qscale= s->chroma_qscale_table[qscale]; s->y_dc_scale= s->y_dc_scale_table[ qscale ]; s->c_dc_scale= s->c_dc_scale_table[ s->chroma_qscale ]; } void ff_mpv_report_decode_progress(MpegEncContext *s) { if (s->pict_type != AV_PICTURE_TYPE_B && !s->partitioned_frame && !s->er.error_occurred) ff_thread_report_progress(&s->current_picture_ptr->tf, s->mb_y, 0); }