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mpegvideo: increase edge_emu_buffer size for VC1

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The VC1 decoder uses edge_emu_buffer simultaneously for luma and chroma
and needs more space. That was not a problem before f1d8763a02
since the size for edge_emu_buffer was always calculated with 2 byte per
pixel since the linesize was not known.

Fixes occasionally fate errors in vc1_sa10143.
This commit is contained in:
Janne Grunau 2012-12-18 22:57:58 +01:00
parent a34d9ad969
commit 45635885e4
1 changed files with 3 additions and 1 deletions
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4
libavcodec/mpegvideo.c
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@ -241,8 +241,10 @@ int ff_mpv_frame_size_alloc(MpegEncContext *s, int linesize)
// edge emu needs blocksize + filter length - 1
// (= 17x17 for halfpel / 21x21 for h264)
// VC1 computes luma and chroma simultaneously and needs 19X19 + 9x9
// at uvlinesize. It supports only YUV420 so 24x24 is enough
// linesize * interlaced * MBsize
FF_ALLOCZ_OR_GOTO(s->avctx, s->edge_emu_buffer, alloc_size * 2 * 21,
FF_ALLOCZ_OR_GOTO(s->avctx, s->edge_emu_buffer, alloc_size * 2 * 24,
fail);
FF_ALLOCZ_OR_GOTO(s->avctx, s->me.scratchpad, alloc_size * 2 * 16 * 2,