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Adapt color sensitiviy threshold to luma signal energy

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Instead using only a fixed threshold, this commit adapts the threshold
for color sensitivity decision to luma signal energy: chroma channel's
sse is at least 1/6 of that in luma for color sensitivity flag to be
set to active.

This recoups a large portion of the speed loss due to accounting for
chroma component costs in RTC mode decision.

Change-Id: Ie01f747f6037dba6a1d1ed3e10b71a0ef1abc42c
This commit is contained in:
Yaowu Xu 2015-03-02 15:35:58 -08:00
parent 1790d45252
commit 47ac3ea0bb
1 changed files with 18 additions and 8 deletions
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26
vp9/encoder/vp9_encodeframe.c
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@ -593,8 +593,8 @@ static const MV search_pos[9] = {
{1, -1}, {1, 0}, {1, 1},
};
static void motion_estimation(VP9_COMP *cpi, MACROBLOCK *x,
BLOCK_SIZE bsize) {
static unsigned int motion_estimation(VP9_COMP *cpi, MACROBLOCK *x,
BLOCK_SIZE bsize) {
MACROBLOCKD *xd = &x->e_mbd;
DECLARE_ALIGNED(16, int16_t, hbuf[128]);
DECLARE_ALIGNED(16, int16_t, vbuf[128]);
@ -610,6 +610,7 @@ static void motion_estimation(VP9_COMP *cpi, MACROBLOCK *x,
uint8_t const *ref_buf, *src_buf;
MV *tmp_mv = &xd->mi[0].src_mi->mbmi.mv[0].as_mv;
int best_sad;
unsigned int best_sse;
MV this_mv;
// Set up prediction 1-D reference set
@ -659,10 +660,12 @@ static void motion_estimation(VP9_COMP *cpi, MACROBLOCK *x,
}
}
ref_buf = xd->plane[0].pre[0].buf + tmp_mv->row * ref_stride + tmp_mv->col;
cpi->fn_ptr[bsize].vf(src_buf, src_stride, ref_buf, ref_stride, &best_sse);
tmp_mv->row *= 8;
tmp_mv->col *= 8;
x->pred_mv[LAST_FRAME] = *tmp_mv;
return best_sse;
}
#endif
@ -709,7 +712,10 @@ static void choose_partitioning(VP9_COMP *cpi,
if (!is_key_frame) {
MB_MODE_INFO *mbmi = &xd->mi[0].src_mi->mbmi;
unsigned int var = 0, sse;
unsigned int var = 0, uv_sse;
#if GLOBAL_MOTION
unsigned int y_sse;
#endif
vp9_setup_pre_planes(xd, 0, yv12, mi_row, mi_col,
&cm->frame_refs[LAST_FRAME - 1].sf);
mbmi->ref_frame[0] = LAST_FRAME;
@ -719,7 +725,7 @@ static void choose_partitioning(VP9_COMP *cpi,
mbmi->interp_filter = BILINEAR;
#if GLOBAL_MOTION
motion_estimation(cpi, x, BLOCK_64X64);
y_sse = motion_estimation(cpi, x, BLOCK_64X64);
#endif
vp9_build_inter_predictors_sb(xd, mi_row, mi_col, BLOCK_64X64);
@ -729,9 +735,13 @@ static void choose_partitioning(VP9_COMP *cpi,
struct macroblockd_plane *pd = &xd->plane[i];
const BLOCK_SIZE bs = get_plane_block_size(BLOCK_64X64, pd);
var += cpi->fn_ptr[bs].vf(p->src.buf, p->src.stride,
pd->dst.buf, pd->dst.stride, &sse);
if (sse > 2048)
x->color_sensitivity[i - 1] = 1;
pd->dst.buf, pd->dst.stride, &uv_sse);
#if GLOBAL_MOTION
x->color_sensitivity[i - 1] = uv_sse * 6 > y_sse;
#else
x->color_sensitivity[i - 1] = (uv_sse > 2048);
#endif
}
d = xd->plane[0].dst.buf;