avcodec/vc1dec: Fix support for small widths/linesizes
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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4411928c64
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759e793823
@ -439,7 +439,8 @@ static void vc1_mc_1mv(VC1Context *v, int dir)
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|| s->h_edge_pos < 22 || v_edge_pos < 22
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|| (unsigned)(src_x - s->mspel) > s->h_edge_pos - (mx&3) - 16 - s->mspel * 3
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|| (unsigned)(src_y - 1) > v_edge_pos - (my&3) - 16 - 3) {
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uint8_t *uvbuf = s->edge_emu_buffer + 19 * s->linesize;
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uint8_t *ubuf = s->edge_emu_buffer + 19 * s->linesize;
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uint8_t *vbuf = ubuf + 9 * s->uvlinesize;
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srcY -= s->mspel * (1 + s->linesize);
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s->vdsp.emulated_edge_mc(s->edge_emu_buffer, srcY,
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@ -448,18 +449,18 @@ static void vc1_mc_1mv(VC1Context *v, int dir)
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src_x - s->mspel, src_y - s->mspel,
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s->h_edge_pos, v_edge_pos);
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srcY = s->edge_emu_buffer;
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s->vdsp.emulated_edge_mc(uvbuf, srcU,
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s->vdsp.emulated_edge_mc(ubuf, srcU,
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s->uvlinesize, s->uvlinesize,
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8 + 1, 8 + 1,
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uvsrc_x, uvsrc_y,
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s->h_edge_pos >> 1, v_edge_pos >> 1);
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s->vdsp.emulated_edge_mc(uvbuf + 16, srcV,
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s->vdsp.emulated_edge_mc(vbuf, srcV,
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s->uvlinesize, s->uvlinesize,
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8 + 1, 8 + 1,
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uvsrc_x, uvsrc_y,
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s->h_edge_pos >> 1, v_edge_pos >> 1);
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srcU = uvbuf;
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srcV = uvbuf + 16;
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srcU = ubuf;
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srcV = vbuf;
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/* if we deal with range reduction we need to scale source blocks */
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if (v->rangeredfrm) {
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int i, j;
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@ -1959,7 +1960,8 @@ static void vc1_interp_mc(VC1Context *v)
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if (v->rangeredfrm || s->h_edge_pos < 22 || v_edge_pos < 22 || use_ic
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|| (unsigned)(src_x - 1) > s->h_edge_pos - (mx & 3) - 16 - 3
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|| (unsigned)(src_y - 1) > v_edge_pos - (my & 3) - 16 - 3) {
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uint8_t *uvbuf = s->edge_emu_buffer + 19 * s->linesize;
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uint8_t *ubuf = s->edge_emu_buffer + 19 * s->linesize;
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uint8_t *vbuf = ubuf + 9 * s->uvlinesize;
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srcY -= s->mspel * (1 + s->linesize);
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s->vdsp.emulated_edge_mc(s->edge_emu_buffer, srcY,
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@ -1968,18 +1970,18 @@ static void vc1_interp_mc(VC1Context *v)
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src_x - s->mspel, src_y - s->mspel,
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s->h_edge_pos, v_edge_pos);
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srcY = s->edge_emu_buffer;
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s->vdsp.emulated_edge_mc(uvbuf, srcU,
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s->vdsp.emulated_edge_mc(ubuf, srcU,
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s->uvlinesize, s->uvlinesize,
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8 + 1, 8 + 1,
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uvsrc_x, uvsrc_y,
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s->h_edge_pos >> 1, v_edge_pos >> 1);
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s->vdsp.emulated_edge_mc(uvbuf + 16, srcV,
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s->vdsp.emulated_edge_mc(vbuf, srcV,
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s->uvlinesize, s->uvlinesize,
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8 + 1, 8 + 1,
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uvsrc_x, uvsrc_y,
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s->h_edge_pos >> 1, v_edge_pos >> 1);
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srcU = uvbuf;
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srcV = uvbuf + 16;
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srcU = ubuf;
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srcV = vbuf;
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/* if we deal with range reduction we need to scale source blocks */
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if (v->rangeredfrm) {
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int i, j;
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