diff options
Diffstat (limited to 'libavcodec/msmpeg4.c')
| -rw-r--r-- | libavcodec/msmpeg4.c | 41 |
1 files changed, 25 insertions, 16 deletions
diff --git a/libavcodec/msmpeg4.c b/libavcodec/msmpeg4.c index e22a8e40f5..395dffc05b 100644 --- a/libavcodec/msmpeg4.c +++ b/libavcodec/msmpeg4.c @@ -5,20 +5,20 @@ * * msmpeg4v1 & v2 stuff by Michael Niedermayer <michaelni@gmx.at> * - * This file is part of Libav. + * This file is part of FFmpeg. * - * Libav is free software; you can redistribute it and/or + * 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. * - * Libav is distributed in the hope that it will be useful, + * 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 Libav; if not, write to the Free Software + * License along with FFmpeg; if not, write to the Free Software * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA */ @@ -36,6 +36,7 @@ #include "mpeg4video.h" #include "msmpeg4data.h" #include "vc1data.h" +#include "libavutil/imgutils.h" /* * You can also call this codec : MPEG4 with a twist ! @@ -61,6 +62,9 @@ static av_cold void init_h263_dc_for_msmpeg4(void) { int level, uni_code, uni_len; + if(ff_v2_dc_chroma_table[255 + 256][1]) + return; + for(level=-256; level<256; level++){ int size, v, l; /* find number of bits */ @@ -113,8 +117,6 @@ static av_cold void init_h263_dc_for_msmpeg4(void) av_cold void ff_msmpeg4_common_init(MpegEncContext *s) { - static int initialized=0; - switch(s->msmpeg4_version){ case 1: case 2: @@ -153,11 +155,7 @@ av_cold void ff_msmpeg4_common_init(MpegEncContext *s) } //Note the default tables are set in common_init in mpegvideo.c - if(!initialized){ - initialized=1; - - init_h263_dc_for_msmpeg4(); - } + init_h263_dc_for_msmpeg4(); } /* predict coded block */ @@ -409,6 +407,7 @@ static int msmpeg4v2_decode_motion(MpegEncContext * s, int pred, int f_code) static int msmpeg4v12_decode_mb(MpegEncContext *s, int16_t block[6][64]) { int cbp, code, i; + uint32_t * const mb_type_ptr = &s->current_picture.mb_type[s->mb_x + s->mb_y*s->mb_stride]; if (s->pict_type == AV_PICTURE_TYPE_P) { if (s->use_skip_mb_code) { @@ -422,6 +421,7 @@ static int msmpeg4v12_decode_mb(MpegEncContext *s, int16_t block[6][64]) s->mv[0][0][0] = 0; s->mv[0][0][1] = 0; s->mb_skipped = 1; + *mb_type_ptr = MB_TYPE_SKIP | MB_TYPE_L0 | MB_TYPE_16x16; return 0; } } @@ -470,6 +470,7 @@ static int msmpeg4v12_decode_mb(MpegEncContext *s, int16_t block[6][64]) s->mv_type = MV_TYPE_16X16; s->mv[0][0][0] = mx; s->mv[0][0][1] = my; + *mb_type_ptr = MB_TYPE_L0 | MB_TYPE_16x16; } else { if(s->msmpeg4_version==2){ s->ac_pred = get_bits1(&s->gb); @@ -479,6 +480,7 @@ static int msmpeg4v12_decode_mb(MpegEncContext *s, int16_t block[6][64]) cbp|= get_vlc2(&s->gb, ff_h263_cbpy_vlc.table, CBPY_VLC_BITS, 1)<<2; //FIXME check errors if(s->pict_type==AV_PICTURE_TYPE_P) cbp^=0x3C; } + *mb_type_ptr = MB_TYPE_INTRA; } s->dsp.clear_blocks(s->block[0]); @@ -588,18 +590,19 @@ static int msmpeg4v34_decode_mb(MpegEncContext *s, int16_t block[6][64]) av_cold int ff_msmpeg4_decode_init(AVCodecContext *avctx) { MpegEncContext *s = avctx->priv_data; - static int done = 0; - int i; + static volatile int done = 0; + int i, ret; MVTable *mv; + if ((ret = av_image_check_size(avctx->width, avctx->height, 0, avctx)) < 0) + return ret; + if (ff_h263_decode_init(avctx) < 0) return -1; ff_msmpeg4_common_init(s); if (!done) { - done = 1; - for(i=0;i<NB_RL_TABLES;i++) { ff_init_rl(&ff_rl_table[i], ff_static_rl_table_store[i]); } @@ -669,6 +672,7 @@ av_cold int ff_msmpeg4_decode_init(AVCodecContext *avctx) INIT_VLC_STATIC(&ff_inter_intra_vlc, INTER_INTRA_VLC_BITS, 4, &ff_table_inter_intra[0][1], 2, 1, &ff_table_inter_intra[0][0], 2, 1, 8); + done = 1; } switch(s->msmpeg4_version){ @@ -1139,8 +1143,9 @@ int ff_msmpeg4_decode_block(MpegEncContext * s, int16_t * block, i-= 192; if(i&(~63)){ const int left= get_bits_left(&s->gb); - if(((i+192 == 64 && level/qmul==-1) || !(s->err_recognition&AV_EF_BITSTREAM)) && left>=0){ + if(((i+192 == 64 && level/qmul==-1) || !(s->err_recognition&(AV_EF_BITSTREAM|AV_EF_COMPLIANT))) && left>=0){ av_log(s->avctx, AV_LOG_ERROR, "ignoring overflow at %d %d\n", s->mb_x, s->mb_y); + i = 63; break; }else{ av_log(s->avctx, AV_LOG_ERROR, "ac-tex damaged at %d %d\n", s->mb_x, s->mb_y); @@ -1216,6 +1221,7 @@ AVCodec ff_msmpeg4v1_decoder = { .close = ff_h263_decode_end, .decode = ff_h263_decode_frame, .capabilities = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1, + .max_lowres = 3, .long_name = NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 1"), .pix_fmts = ff_pixfmt_list_420, }; @@ -1229,6 +1235,7 @@ AVCodec ff_msmpeg4v2_decoder = { .close = ff_h263_decode_end, .decode = ff_h263_decode_frame, .capabilities = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1, + .max_lowres = 3, .long_name = NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 2"), .pix_fmts = ff_pixfmt_list_420, }; @@ -1242,6 +1249,7 @@ AVCodec ff_msmpeg4v3_decoder = { .close = ff_h263_decode_end, .decode = ff_h263_decode_frame, .capabilities = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1, + .max_lowres = 3, .long_name = NULL_IF_CONFIG_SMALL("MPEG-4 part 2 Microsoft variant version 3"), .pix_fmts = ff_pixfmt_list_420, }; @@ -1255,6 +1263,7 @@ AVCodec ff_wmv1_decoder = { .close = ff_h263_decode_end, .decode = ff_h263_decode_frame, .capabilities = CODEC_CAP_DRAW_HORIZ_BAND | CODEC_CAP_DR1, + .max_lowres = 3, .long_name = NULL_IF_CONFIG_SMALL("Windows Media Video 7"), .pix_fmts = ff_pixfmt_list_420, }; |