mirror of https://git.ffmpeg.org/ffmpeg.git
VP8: Slightly faster MV selection
Don't clamp best mv unless it's actually used. Originally committed as revision 24461 to svn://svn.ffmpeg.org/ffmpeg/trunk
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@ -589,7 +589,7 @@ static void find_near_mvs(VP8Context *s, VP8Macroblock *mb, int mb_x, int mb_y,
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if (cnt[CNT_NEAREST] >= cnt[CNT_ZERO])
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best_idx = CNT_NEAREST;
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clamp_mv(s, best, &near_mv[best_idx], mb_x, mb_y);
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mb->mv = near_mv[best_idx];
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near[0] = near_mv[CNT_NEAREST];
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near[1] = near_mv[CNT_NEAR];
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}
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@ -629,8 +629,7 @@ static const uint8_t *get_submv_prob(uint32_t left, uint32_t top)
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* Split motion vector prediction, 16.4.
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* @returns the number of motion vectors parsed (2, 4 or 16)
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*/
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static int decode_splitmvs(VP8Context *s, VP56RangeCoder *c,
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VP8Macroblock *mb, VP56mv *base_mv)
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static int decode_splitmvs(VP8Context *s, VP56RangeCoder *c, VP8Macroblock *mb)
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{
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int part_idx = mb->partitioning =
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vp8_rac_get_tree(c, vp8_mbsplit_tree, vp8_mbsplit_prob);
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@ -663,8 +662,8 @@ static int decode_splitmvs(VP8Context *s, VP56RangeCoder *c,
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switch (vp8_rac_get_tree(c, vp8_submv_ref_tree, submv_prob)) {
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case VP8_SUBMVMODE_NEW4X4:
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mb->bmv[n].y = base_mv->y + read_mv_component(c, s->prob->mvc[0]);
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mb->bmv[n].x = base_mv->x + read_mv_component(c, s->prob->mvc[1]);
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mb->bmv[n].y = mb->mv.y + read_mv_component(c, s->prob->mvc[0]);
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mb->bmv[n].x = mb->mv.x + read_mv_component(c, s->prob->mvc[1]);
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break;
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case VP8_SUBMVMODE_ZERO4X4:
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AV_ZERO32(&mb->bmv[n]);
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@ -746,7 +745,8 @@ static void decode_mb_mode(VP8Context *s, VP8Macroblock *mb, int mb_x, int mb_y,
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mb->mode = vp8_rac_get_tree(c, vp8_pred16x16_tree_mvinter, p);
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switch (mb->mode) {
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case VP8_MVMODE_SPLIT:
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mb->mv = mb->bmv[decode_splitmvs(s, c, mb, &best) - 1];
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clamp_mv(s, &mb->mv, &mb->mv, mb_x, mb_y);
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mb->mv = mb->bmv[decode_splitmvs(s, c, mb) - 1];
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break;
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case VP8_MVMODE_ZERO:
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AV_ZERO32(&mb->mv);
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@ -758,8 +758,9 @@ static void decode_mb_mode(VP8Context *s, VP8Macroblock *mb, int mb_x, int mb_y,
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clamp_mv(s, &mb->mv, &near[1], mb_x, mb_y);
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break;
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case VP8_MVMODE_NEW:
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mb->mv.y = best.y + read_mv_component(c, s->prob->mvc[0]);
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mb->mv.x = best.x + read_mv_component(c, s->prob->mvc[1]);
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clamp_mv(s, &mb->mv, &mb->mv, mb_x, mb_y);
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mb->mv.y += + read_mv_component(c, s->prob->mvc[0]);
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mb->mv.x += + read_mv_component(c, s->prob->mvc[1]);
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break;
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}
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if (mb->mode != VP8_MVMODE_SPLIT) {
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