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h264_mp4toannexb: fix the pps offset when there are more than one sps in avcc 

the pps offset is used to locate pps in the spspps_buf; however, the
current calc method is wrong because it is the offset of the original
avctx->extradata;
when there is only one sps in the avcc; the value is correct by
coincidence, however, it will fail in avcc with multi sps

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
赵宇龙 2015-10-09 13:59:56 +08:00 committed by Michael Niedermayer
parent 3d126ef188
commit cd847839f3
1 changed files with 1 additions and 1 deletions
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2
libavcodec/h264_mp4toannexb_bsf.c
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@ -122,7 +122,7 @@ pps:
if (!unit_nb && !sps_done++) {
unit_nb = *extradata++; /* number of pps unit(s) */
if (unit_nb) {
ctx->pps_offset = (extradata - 1) - (avctx->extradata + 4);
ctx->pps_offset = total_size;
pps_seen = 1;
}
}