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libavcodec/rv34: error out earlier on missing references

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Fixes visual corruption on seeking

Fixes: downloadTest_clip_24M.rmvb

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2018-04-02 20:01:07 +02:00
parent 6261ef4251
commit 6cd81d68c5
1 changed files with 3 additions and 3 deletions
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6
libavcodec/rv34.c
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@ -1585,7 +1585,7 @@ int ff_rv34_decode_update_thread_context(AVCodecContext *dst, const AVCodecConte
// Do no call ff_mpeg_update_thread_context on a partially initialized
// decoder context.
if (!s1->linesize)
if (!s1->context_initialized)
return 0;
return ff_mpeg_update_thread_context(dst, src);
@ -1733,6 +1733,8 @@ int ff_rv34_decode_frame(AVCodecContext *avctx,
if ((err = rv34_decoder_realloc(r)) < 0)
return err;
}
if (faulty_b)
return AVERROR_INVALIDDATA;
s->pict_type = si.type ? si.type : AV_PICTURE_TYPE_I;
if (ff_mpv_frame_start(s, s->avctx) < 0)
return -1;
@ -1786,8 +1788,6 @@ int ff_rv34_decode_frame(AVCodecContext *avctx,
"multithreading mode (start MB is %d).\n", si.start);
return AVERROR_INVALIDDATA;
}
if (faulty_b)
return AVERROR_INVALIDDATA;
for(i = 0; i < slice_count; i++){
int offset = get_slice_offset(avctx, slices_hdr, i , slice_count, buf_size);