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svq3: Do initialization after parsing the extradata

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If done before, some parameters aren't known yet.

With svq3/rtp, initializing before some parameters are known
can lead to calling av_malloc(0), which on OS X currently returns
broken pointers.
This commit is contained in:
Ronald S. Bultje 2011-05-13 10:24:31 +03:00
parent 21bbca5b44
commit cdca7c378e
1 changed files with 10 additions and 9 deletions
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19
libavcodec/svq3.c
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@ -804,20 +804,11 @@ static av_cold int svq3_decode_init(AVCodecContext *avctx)
avctx->pix_fmt = avctx->codec->pix_fmts[0];
if (!s->context_initialized) {
s->width = avctx->width;
s->height = avctx->height;
h->halfpel_flag = 1;
h->thirdpel_flag = 1;
h->unknown_svq3_flag = 0;
h->chroma_qp[0] = h->chroma_qp[1] = 4;
if (MPV_common_init(s) < 0)
return -1;
h->b_stride = 4*s->mb_width;
ff_h264_alloc_tables(h);
/* prowl for the "SEQH" marker in the extradata */
extradata = (unsigned char *)avctx->extradata;
for (m = 0; m < avctx->extradata_size; m++) {
@ -904,6 +895,16 @@ static av_cold int svq3_decode_init(AVCodecContext *avctx)
#endif
}
}
s->width = avctx->width;
s->height = avctx->height;
if (MPV_common_init(s) < 0)
return -1;
h->b_stride = 4*s->mb_width;
ff_h264_alloc_tables(h);
}
return 0;