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vp9: copy bug in libvpx for 4:2:2 chroma bs=8x4/4x4 prediction.
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commit
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@ -77,12 +77,20 @@ static void FN(inter_pred)(AVCodecContext *ctx)
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ref1->data[2], ref1->linesize[2], tref1,
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row << 3, col << (3 - s->ss_h),
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&b->mv[0][0], 8 >> s->ss_h, 4, w1, h1, 0);
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// BUG for 4:2:2 bs=8x4, libvpx uses the wrong block index
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// to get the motion vector for the bottom 4x4 block
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// https://code.google.com/p/webm/issues/detail?id=993
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if (s->ss_h == 0) {
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uvmv = b->mv[2][0];
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} else {
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uvmv = ROUNDED_DIV_MVx2(b->mv[0][0], b->mv[2][0]);
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}
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mc_chroma_dir(s, mc[3 + s->ss_h][b->filter][0],
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s->dst[1] + 4 * ls_uv, s->dst[2] + 4 * ls_uv, ls_uv,
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ref1->data[1], ref1->linesize[1],
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ref1->data[2], ref1->linesize[2], tref1,
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(row << 3) + 4, col << (3 - s->ss_h),
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&b->mv[2][0], 8 >> s->ss_h, 4, w1, h1, 0);
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&uvmv, 8 >> s->ss_h, 4, w1, h1, 0);
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}
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if (b->comp) {
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@ -110,12 +118,20 @@ static void FN(inter_pred)(AVCodecContext *ctx)
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ref2->data[2], ref2->linesize[2], tref2,
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row << 3, col << (3 - s->ss_h),
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&b->mv[0][1], 8 >> s->ss_h, 4, w2, h2, 1);
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// BUG for 4:2:2 bs=8x4, libvpx uses the wrong block index
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// to get the motion vector for the bottom 4x4 block
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// https://code.google.com/p/webm/issues/detail?id=993
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if (s->ss_h == 0) {
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uvmv = b->mv[2][1];
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} else {
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uvmv = ROUNDED_DIV_MVx2(b->mv[0][1], b->mv[2][1]);
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}
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mc_chroma_dir(s, mc[3 + s->ss_h][b->filter][1],
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s->dst[1] + 4 * ls_uv, s->dst[2] + 4 * ls_uv, ls_uv,
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ref2->data[1], ref2->linesize[1],
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ref2->data[2], ref2->linesize[2], tref2,
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(row << 3) + 4, col << (3 - s->ss_h),
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&b->mv[2][1], 8 >> s->ss_h, 4, w2, h2, 1);
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&uvmv, 8 >> s->ss_h, 4, w2, h2, 1);
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}
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}
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} else if (b->bs == BS_4x8) {
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@ -239,7 +255,10 @@ static void FN(inter_pred)(AVCodecContext *ctx)
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ref1->data[2], ref1->linesize[2], tref1,
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row << 3, col << 2,
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&uvmv, 4, 4, w1, h1, 0);
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uvmv = ROUNDED_DIV_MVx2(b->mv[2][0], b->mv[3][0]);
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// BUG libvpx uses wrong block index for 4:2:2 bs=4x4
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// bottom block
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// https://code.google.com/p/webm/issues/detail?id=993
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uvmv = ROUNDED_DIV_MVx2(b->mv[1][0], b->mv[2][0]);
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mc_chroma_dir(s, mc[4][b->filter][0],
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s->dst[1] + 4 * ls_uv, s->dst[2] + 4 * ls_uv, ls_uv,
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ref1->data[1], ref1->linesize[1],
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@ -327,7 +346,10 @@ static void FN(inter_pred)(AVCodecContext *ctx)
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ref2->data[2], ref2->linesize[2], tref2,
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row << 3, col << 2,
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&uvmv, 4, 4, w2, h2, 1);
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uvmv = ROUNDED_DIV_MVx2(b->mv[2][1], b->mv[3][1]);
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// BUG libvpx uses wrong block index for 4:2:2 bs=4x4
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// bottom block
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// https://code.google.com/p/webm/issues/detail?id=993
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uvmv = ROUNDED_DIV_MVx2(b->mv[1][1], b->mv[2][1]);
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mc_chroma_dir(s, mc[4][b->filter][1],
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s->dst[1] + 4 * ls_uv, s->dst[2] + 4 * ls_uv, ls_uv,
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ref2->data[1], ref2->linesize[1],
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