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author | Michael Niedermayer <michaelni@gmx.at> | 2003-03-20 17:52:30 +0000 |
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committer | Michael Niedermayer <michaelni@gmx.at> | 2003-03-20 17:52:30 +0000 |
commit | d5a21172283572af587b3d939eba0091484d3263 (patch) | |
tree | 663c2dfe37bc66343717dd60f36d94fec2dd3efb | |
parent | d66c7abc937069d57fb156bcecec16e406b88c7b (diff) | |
download | ffmpeg-d5a21172283572af587b3d939eba0091484d3263.tar.gz |
better non conformant divx packed bitstream detection, so unpacked (no b frames) divx MPEG4-ES streams can be read
Originally committed as revision 1695 to svn://svn.ffmpeg.org/ffmpeg/trunk
-rw-r--r-- | libavcodec/h263.c | 18 | ||||
-rw-r--r-- | libavcodec/h263dec.c | 4 | ||||
-rw-r--r-- | libavcodec/mpegvideo.h | 1 |
3 files changed, 15 insertions, 8 deletions
diff --git a/libavcodec/h263.c b/libavcodec/h263.c index b9b94efc9c..76a421a707 100644 --- a/libavcodec/h263.c +++ b/libavcodec/h263.c @@ -4566,6 +4566,7 @@ static int decode_user_data(MpegEncContext *s, GetBitContext *gb){ int i; int e; int ver, build, ver2, ver3; + char last; buf[0]= show_bits(gb, 8); for(i=1; i<256; i++){ @@ -4574,16 +4575,21 @@ static int decode_user_data(MpegEncContext *s, GetBitContext *gb){ skip_bits(gb, 8); } buf[255]=0; - + /* divx detection */ - e=sscanf(buf, "DivX%dBuild%d", &ver, &build); - if(e!=2) - e=sscanf(buf, "DivX%db%d", &ver, &build); - if(e==2){ + e=sscanf(buf, "DivX%dBuild%d%c", &ver, &build, &last); + if(e<2) + e=sscanf(buf, "DivX%db%d%c", &ver, &build, &last); + if(e>=2){ s->divx_version= ver; s->divx_build= build; + s->divx_packed= e==3 && last=='p'; if(s->picture_number==0){ - printf("This file was encoded with DivX%d Build%d\n", ver, build); + printf("This file was encoded with DivX%d Build%d", ver, build); + if(s->divx_packed) + printf("p\n"); + else + printf("\n"); } } diff --git a/libavcodec/h263dec.c b/libavcodec/h263dec.c index 9c2d26b9b6..2b9443908b 100644 --- a/libavcodec/h263dec.c +++ b/libavcodec/h263dec.c @@ -128,7 +128,7 @@ int ff_h263_decode_end(AVCodecContext *avctx) static int get_consumed_bytes(MpegEncContext *s, int buf_size){ int pos= (get_bits_count(&s->gb)+7)>>3; - if(s->divx_version>=500){ + if(s->divx_packed){ //we would have to scan through the whole buf to handle the weird reordering ... return buf_size; }else if(s->flags&CODEC_FLAG_TRUNCATED){ @@ -675,7 +675,7 @@ retry: } /* divx 5.01+ bistream reorder stuff */ - if(s->codec_id==CODEC_ID_MPEG4 && s->bitstream_buffer_size==0 && s->divx_version>=500){ + if(s->codec_id==CODEC_ID_MPEG4 && s->bitstream_buffer_size==0 && s->divx_packed){ int current_pos= get_bits_count(&s->gb)>>3; if( buf_size - current_pos > 5 diff --git a/libavcodec/mpegvideo.h b/libavcodec/mpegvideo.h index 83ae0f1697..ab2dd5176c 100644 --- a/libavcodec/mpegvideo.h +++ b/libavcodec/mpegvideo.h @@ -499,6 +499,7 @@ typedef struct MpegEncContext { /* divx specific, used to workaround (many) bugs in divx5 */ int divx_version; int divx_build; + int divx_packed; #define BITSTREAM_BUFFER_SIZE 1024*256 uint8_t *bitstream_buffer; //Divx 5.01 puts several frames in a single one, this is used to reorder them int bitstream_buffer_size; |