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| author | Michael Niedermayer <michaelni@gmx.at> | 2014-06-14 16:23:09 +0200 |
|---|---|---|
| committer | Michael Niedermayer <michaelni@gmx.at> | 2014-06-14 16:33:09 +0200 |
| commit | 759e793823526e9bb72f5266d17cf6e19a33dcf3 (patch) | |
| tree | b34be5a00e17d8ee44d59e046d54fbf3008dcc80 | |
| parent | 4411928c64afffb75c5d7b8c914fbfb1116dc042 (diff) | |
| download | ffmpeg-759e793823526e9bb72f5266d17cf6e19a33dcf3.tar.gz | |
avcodec/vc1dec: Fix support for small widths/linesizes
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
| -rw-r--r-- | libavcodec/vc1dec.c | 22 |
1 files changed, 12 insertions, 10 deletions
diff --git a/libavcodec/vc1dec.c b/libavcodec/vc1dec.c index 08bd36acad..24b14bcb25 100644 --- a/libavcodec/vc1dec.c +++ b/libavcodec/vc1dec.c @@ -439,7 +439,8 @@ static void vc1_mc_1mv(VC1Context *v, int dir) || s->h_edge_pos < 22 || v_edge_pos < 22 || (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx&3) - 16 - s->mspel * 3 || (unsigned)(src_y - 1) > v_edge_pos - (my&3) - 16 - 3) { - uint8_t *uvbuf = s->edge_emu_buffer + 19 * s->linesize; + uint8_t *ubuf = s->edge_emu_buffer + 19 * s->linesize; + uint8_t *vbuf = ubuf + 9 * s->uvlinesize; srcY -= s->mspel * (1 + s->linesize); s->vdsp.emulated_edge_mc(s->edge_emu_buffer, srcY, @@ -448,18 +449,18 @@ static void vc1_mc_1mv(VC1Context *v, int dir) src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, v_edge_pos); srcY = s->edge_emu_buffer; - s->vdsp.emulated_edge_mc(uvbuf, srcU, + s->vdsp.emulated_edge_mc(ubuf, srcU, s->uvlinesize, s->uvlinesize, 8 + 1, 8 + 1, uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, v_edge_pos >> 1); - s->vdsp.emulated_edge_mc(uvbuf + 16, srcV, + s->vdsp.emulated_edge_mc(vbuf, srcV, s->uvlinesize, s->uvlinesize, 8 + 1, 8 + 1, uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, v_edge_pos >> 1); - srcU = uvbuf; - srcV = uvbuf + 16; + srcU = ubuf; + srcV = vbuf; /* if we deal with range reduction we need to scale source blocks */ if (v->rangeredfrm) { int i, j; @@ -1959,7 +1960,8 @@ static void vc1_interp_mc(VC1Context *v) if (v->rangeredfrm || s->h_edge_pos < 22 || v_edge_pos < 22 || use_ic || (unsigned)(src_x - 1) > s->h_edge_pos - (mx & 3) - 16 - 3 || (unsigned)(src_y - 1) > v_edge_pos - (my & 3) - 16 - 3) { - uint8_t *uvbuf = s->edge_emu_buffer + 19 * s->linesize; + uint8_t *ubuf = s->edge_emu_buffer + 19 * s->linesize; + uint8_t *vbuf = ubuf + 9 * s->uvlinesize; srcY -= s->mspel * (1 + s->linesize); s->vdsp.emulated_edge_mc(s->edge_emu_buffer, srcY, @@ -1968,18 +1970,18 @@ static void vc1_interp_mc(VC1Context *v) src_x - s->mspel, src_y - s->mspel, s->h_edge_pos, v_edge_pos); srcY = s->edge_emu_buffer; - s->vdsp.emulated_edge_mc(uvbuf, srcU, + s->vdsp.emulated_edge_mc(ubuf, srcU, s->uvlinesize, s->uvlinesize, 8 + 1, 8 + 1, uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, v_edge_pos >> 1); - s->vdsp.emulated_edge_mc(uvbuf + 16, srcV, + s->vdsp.emulated_edge_mc(vbuf, srcV, s->uvlinesize, s->uvlinesize, 8 + 1, 8 + 1, uvsrc_x, uvsrc_y, s->h_edge_pos >> 1, v_edge_pos >> 1); - srcU = uvbuf; - srcV = uvbuf + 16; + srcU = ubuf; + srcV = vbuf; /* if we deal with range reduction we need to scale source blocks */ if (v->rangeredfrm) { int i, j; |