ref: c3f5b2931b8c41a00378ba4eebde88bde7c1d477
parent: 6898e8b7ab73d0b0a77d4939fd9566d3f5308ed0
author: Ronald S. Bultje <rbultje@google.com>
date: Fri Mar 2 06:18:24 EST 2012
Use per-MB compound intra prediction. This gives a modest gain on derf overall, although at low bitrates the cost is still too high, so this can be improved further. Patch 2. Re-base and fix 80 column issues Change-Id: Ida2f9fa3fe75370669f6a27b37108dc602231c63
--- a/vp8/decoder/decodemv.c
+++ b/vp8/decoder/decodemv.c
@@ -134,13 +134,13 @@
if ((m->mbmi.mode = y_mode) == B_PRED)
{int i = 0;
+#if CONFIG_COMP_INTRA_PRED
+ int use_comp_pred = vp8_read(bc, 128);
+#endif
do
{const B_PREDICTION_MODE A = above_block_mode(m, i, mis);
const B_PREDICTION_MODE L = left_block_mode(m, i);
-#if CONFIG_COMP_INTRA_PRED
- int use_comp_pred = vp8_read(bc, 128);
-#endif
m->bmi[i].as_mode.first =
(B_PREDICTION_MODE) vp8_read_bmode(
@@ -933,11 +933,11 @@
if (mbmi->mode == B_PRED)
{int j = 0;
- do
- {#if CONFIG_COMP_INTRA_PRED
- int use_comp_pred = vp8_read(bc, 128);
+ int use_comp_pred = vp8_read(bc, 128);
#endif
+ do
+ {mi->bmi[j].as_mode.first = (B_PREDICTION_MODE)vp8_read_bmode(bc, pbi->common.fc.bmode_prob);
#if CONFIG_COMP_INTRA_PRED
if (use_comp_pred)
--- a/vp8/encoder/bitstream.c
+++ b/vp8/encoder/bitstream.c
@@ -755,16 +755,16 @@
if (mode == B_PRED)
{- int j = 0;
+ int j = 0, uses_second = m->bmi[0].as_mode.second != (B_PREDICTION_MODE);
+ vp8_write(w, uses_second, 128);
do {#if CONFIG_COMP_INTRA_PRED
int mode2 = m->bmi[j].as_mode.second;
- vp8_encode_bool(w, mode2 != (B_PREDICTION_MODE) (B_DC_PRED - 1), 128);
#endif
write_bmode(w, m->bmi[j].as_mode.first, pc->fc.bmode_prob);
#if CONFIG_COMP_INTRA_PRED
- if (mode2 != (B_PREDICTION_MODE) (B_DC_PRED - 1))
+ if (uses_second)
{write_bmode(w, mode2, pc->fc.bmode_prob);
}
@@ -1124,16 +1124,16 @@
if (mode == B_PRED)
{- int j = 0;
+ int j = 0, uses_second = m->bmi[0].as_mode.second != (B_PREDICTION_MODE) (B_DC_PRED - 1);
+ vp8_write(w, uses_second, 128);
do {#if CONFIG_COMP_INTRA_PRED
B_PREDICTION_MODE mode2 = m->bmi[j].as_mode.second;
- vp8_write(w, mode2 != (B_PREDICTION_MODE) (B_DC_PRED - 1), 128);
#endif
write_bmode(w, m->bmi[j].as_mode.first, pc->fc.bmode_prob);
#if CONFIG_COMP_INTRA_PRED
- if (mode2 != (B_PREDICTION_MODE) (B_DC_PRED - 1))
+ if (uses_second)
{write_bmode(w, mode2, pc->fc.bmode_prob);
}
@@ -1396,8 +1396,9 @@
#endif
if (ym == B_PRED)
{- int i = 0;
+ int i = 0, uses_second = m->bmi[0].as_mode.second != (B_PREDICTION_MODE);
+ vp8_write(bc, uses_second, 128);
do
{const B_PREDICTION_MODE A = above_block_mode(m, i, mis);
@@ -1411,12 +1412,9 @@
++intra_mode_stats [A] [L] [bm];
#endif
-#if CONFIG_COMP_INTRA_PRED
- vp8_write(bc, bm2 != (B_PREDICTION_MODE) (B_DC_PRED - 1), 128);
-#endif
write_bmode(bc, bm, c->kf_bmode_prob [A] [L]);
#if CONFIG_COMP_INTRA_PRED
- if (bm2 != (B_PREDICTION_MODE) (B_DC_PRED - 1))
+ if (uses_second)
{write_bmode(bc, bm2, c->kf_bmode_prob [A] [L]);
}
@@ -1516,8 +1514,9 @@
if (ym == B_PRED)
{const int mis = c->mode_info_stride;
- int i = 0;
+ int i = 0, uses_second = m->bmi[0].as_mode.second != (B_PREDICTION_MODE) (B_DC_PRED - 1);
+ vp8_write(bc, uses_second, 128);
do
{const B_PREDICTION_MODE A = above_block_mode(m, i, mis);
@@ -1531,12 +1530,9 @@
++intra_mode_stats [A] [L] [bm];
#endif
-#if CONFIG_COMP_INTRA_PRED
- vp8_write(bc, bm2 != (B_PREDICTION_MODE) (B_DC_PRED - 1), 128);
-#endif
write_bmode(bc, bm, c->kf_bmode_prob [A] [L]);
#if CONFIG_COMP_INTRA_PRED
- if (bm2 != (B_PREDICTION_MODE) (B_DC_PRED - 1))
+ if (uses_second)
{write_bmode(bc, bm2, c->kf_bmode_prob [A] [L]);
}
--- a/vp8/encoder/rdopt.c
+++ b/vp8/encoder/rdopt.c
@@ -837,7 +837,8 @@
int *bestrate,
int *bestratey,
- int *bestdistortion)
+ int *bestdistortion,
+ int allow_comp)
{B_PREDICTION_MODE mode;
#if CONFIG_COMP_INTRA_PRED
@@ -860,7 +861,7 @@
for (mode = B_DC_PRED; mode <= B_HU_PRED; mode++)
{#if CONFIG_COMP_INTRA_PRED
- for (mode2 = B_DC_PRED - 1; mode2 != B_HU_PRED + 1; mode2++)
+ for (mode2 = (allow_comp ? 0 : (B_DC_PRED - 1)); mode2 != (allow_comp ? (mode + 1) : 0); mode2++)
{#endif
int this_rd;
@@ -880,13 +881,11 @@
RECON_INVOKE(&cpi->rtcd.common->recon, intra4x4_predict)
(b, mode, b->predictor);
#if CONFIG_COMP_INTRA_PRED
- rate += vp8_cost_bit(128, 0);
}
else
{RECON_INVOKE(&cpi->rtcd.common->recon, comp_intra4x4_predict)
(b, mode, mode2, b->predictor);
- rate += vp8_cost_bit(128, 1);
rate += bmode_costs[mode2];
}
#endif
@@ -934,7 +933,8 @@
}
static int rd_pick_intra4x4mby_modes(VP8_COMP *cpi, MACROBLOCK *mb, int *Rate,
- int *rate_y, int *Distortion, int best_rd)
+ int *rate_y, int *Distortion, int best_rd,
+ int allow_comp)
{MACROBLOCKD *const xd = &mb->e_mbd;
int i;
@@ -983,7 +983,7 @@
&best_second_mode,
#endif
bmode_costs, ta + vp8_block2above[i],
- tl + vp8_block2left[i], &r, &ry, &d);
+ tl + vp8_block2left[i], &r, &ry, &d, allow_comp);
cost += r;
distortion += d;
@@ -1001,7 +1001,7 @@
if(total_rd >= (int64_t)best_rd)
return INT_MAX;
- *Rate = cost;
+ *Rate = cost + vp8_cost_bit(128, allow_comp);
*rate_y += tot_rate_y;
*Distortion = distortion;
@@ -2736,7 +2736,7 @@
int tmp_rd;
// Note the rate value returned here includes the cost of coding the BPRED mode : x->mbmode_cost[x->e_mbd.frame_type][BPRED];
- tmp_rd = rd_pick_intra4x4mby_modes(cpi, x, &rate, &rate_y, &distortion, best_yrd);
+ tmp_rd = rd_pick_intra4x4mby_modes(cpi, x, &rate, &rate_y, &distortion, best_yrd, 0);
rate2 += rate;
distortion2 += distortion;
@@ -3478,7 +3478,6 @@
if (best_mbmode.mode == I8X8_PRED)
{- //printf("inter\n");set_i8x8_block_modes(x, mode8x8);
}
@@ -3512,9 +3511,9 @@
void vp8_rd_pick_intra_mode(VP8_COMP *cpi, MACROBLOCK *x, int *rate_)
{MACROBLOCKD *xd = &x->e_mbd;
- int error4x4, error16x16;
- int rate4x4, rate16x16 = 0, rateuv;
- int dist4x4, dist16x16, distuv;
+ int error4x4, error16x16, error4x4d;
+ int rate4x4, rate16x16 = 0, rateuv, rate4x4d;
+ int dist4x4, dist16x16, distuv, dist4x4d;
int rate;
int rate4x4_tokenonly = 0;
int rate16x16_tokenonly = 0;
@@ -3550,14 +3549,21 @@
error4x4 = rd_pick_intra4x4mby_modes(cpi, x,
&rate4x4, &rate4x4_tokenonly,
- &dist4x4, error16x16);
+ &dist4x4, error16x16, 0);
+ error4x4d = rd_pick_intra4x4mby_modes(cpi, x,
+ &rate4x4d, &rate4x4_tokenonly,
+ &dist4x4d, error16x16, 1);
if(error8x8> error16x16)
{if (error4x4 < error16x16)
{+ rate += (error4x4d < error4x4) ? rate4x4d : rate4x4;
+ if (error4x4d >= error4x4) // FIXME save original modes etc.
+ error4x4 = rd_pick_intra4x4mby_modes(cpi, x, &rate4x4,
+ &rate4x4_tokenonly,
+ &dist4x4, error16x16, 0);
x->e_mbd.mode_info_context->mbmi.mode = B_PRED;
- rate += rate4x4;
}
else
{@@ -3570,14 +3576,17 @@
{if (error4x4 < error8x8)
{+ rate += (error4x4d < error4x4) ? rate4x4d : rate4x4;
+ if (error4x4d >= error4x4) // FIXME save original modes etc.
+ error4x4 = rd_pick_intra4x4mby_modes(cpi, x, &rate4x4,
+ &rate4x4_tokenonly,
+ &dist4x4, error16x16, 0);
x->e_mbd.mode_info_context->mbmi.mode = B_PRED;
- rate += rate4x4;
}
else
{x->e_mbd.mode_info_context->mbmi.mode = I8X8_PRED;
- //printf("intra\n");set_i8x8_block_modes(x, mode8x8);
rate += rate8x8;
}