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field pic timestamp fix

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Originally committed as revision 3300 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2004-07-09 21:55:10 +00:00
parent fc3e9202aa
commit 8dab64b6c1
1 changed files with 7 additions and 1 deletions
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8
libavcodec/parser.c
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@ -281,7 +281,7 @@ static void mpegvideo_extract_headers(AVCodecParserContext *s,
int32_t start_code;
int frame_rate_index, ext_type, bytes_left;
int frame_rate_ext_n, frame_rate_ext_d;
int top_field_first, repeat_first_field, progressive_frame;
int picture_structure, top_field_first, repeat_first_field, progressive_frame;
int horiz_size_ext, vert_size_ext;
s->repeat_pict = 0;
@ -328,6 +328,7 @@ static void mpegvideo_extract_headers(AVCodecParserContext *s,
break;
case 0x8: /* picture coding extension */
if (bytes_left >= 5) {
picture_structure = (buf[3]>>5)&3;
top_field_first = buf[3] & (1 << 7);
repeat_first_field = buf[3] & (1 << 1);
progressive_frame = buf[4] & (1 << 7);
@ -343,6 +344,11 @@ static void mpegvideo_extract_headers(AVCodecParserContext *s,
s->repeat_pict = 1;
}
}
/* the packet only represents half a frame
XXX,FIXME maybe find a different solution */
if(picture_structure != 3)
s->repeat_pict = -1;
}
break;
}