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h.263 ssm + aic fix by (Maarten Daniels <maarten dot daniels at student dot luc dot ac dot be>)

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Originally committed as revision 2905 to svn://svn.ffmpeg.org/ffmpeg/trunk
This commit is contained in:
Michael Niedermayer 2004-03-18 22:45:37 +00:00
parent 950b55d3e2
commit 204b5c9e08
1 changed files with 9 additions and 3 deletions
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12
libavcodec/h263.c
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@ -1456,8 +1456,10 @@ static int h263_pred_dc(MpegEncContext * s, int n, uint16_t **dc_val_ptr)
c = dc_val[(x) + (y - 1) * wrap];
/* No prediction outside GOB boundary */
if (s->first_slice_line && ((n < 2) || (n > 3)))
c = 1024;
if(s->first_slice_line && n!=3){
if(n!=2) c= 1024;
if(n!=1 && s->mb_x == s->resync_mb_x) a= 1024;
}
pred_dc = 1024;
/* just DC prediction */
if (a != 1024 && c != 1024)
@ -5117,11 +5119,15 @@ int h263_decode_picture_header(MpegEncContext *s)
s->qscale = get_bits(&s->gb, 5);
}
s->mb_width = (s->width + 15) / 16;
s->mb_height = (s->height + 15) / 16;
s->mb_num = s->mb_width * s->mb_height;
/* PEI */
while (get_bits1(&s->gb) != 0) {
skip_bits(&s->gb, 8);
}
if(s->h263_slice_structured){
if (get_bits1(&s->gb) != 1) {
av_log(s->avctx, AV_LOG_ERROR, "SEPB1 marker missing\n");