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Enable per transformed block zero coeffs forcing

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This commit enables forcing all coefficients zero per transformed
block, when its rate-distortion cost is lower than regular coeff
quantization.

The overall performance improvement (including its parent patch on
calculating rd cost per transformed block) at speed 1:
derf:  0.298%
yt:    0.452%
hd:    0.741%
stdhd: 0.006%

Change-Id: I66005fe0fd7af192c3eba32e02fd6d77952accb5
This commit is contained in:
Jingning Han 2013-09-20 16:29:24 -07:00
parent 78fbb10642
commit a517343ca3
4 changed files with 29 additions and 1 deletions
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2
vp9/encoder/vp9_block.h
View File

@ -34,6 +34,7 @@ typedef struct {
typedef struct {
MODE_INFO mic;
PARTITION_INFO partition_info;
unsigned char zcoeff_blk[256];
int skip;
int_mv best_ref_mv;
int_mv second_best_ref_mv;
@ -136,6 +137,7 @@ struct macroblock {
int mv_row_min;
int mv_row_max;
unsigned char zcoeff_blk[TX_SIZES][256];
int skip;
int encode_breakout;

4
vp9/encoder/vp9_encodeframe.c
View File

@ -390,6 +390,9 @@ static void update_state(VP9_COMP *cpi, PICK_MODE_CONTEXT *ctx,
}
x->skip = ctx->skip;
vpx_memcpy(x->zcoeff_blk[mbmi->tx_size], ctx->zcoeff_blk,
sizeof(ctx->zcoeff_blk));
if (!output_enabled)
return;
@ -2744,7 +2747,6 @@ static void encode_superblock(VP9_COMP *cpi, TOKENEXTRA **t, int output_enabled,
setup_pre_planes(xd, 1, second_ref_fb, mi_row, mi_col,
&xd->scale_factor[1]);
vp9_build_inter_predictors_sb(xd, mi_row, mi_col, MAX(bsize, BLOCK_8X8));
}

8
vp9/encoder/vp9_encodemb.c
View File

@ -482,6 +482,14 @@ static void encode_block(int plane, int block, BLOCK_SIZE plane_bsize,
int16_t *const dqcoeff = BLOCK_OFFSET(pd->dqcoeff, block);
uint8_t *const dst = raster_block_offset_uint8(plane_bsize, raster_block,
pd->dst.buf, pd->dst.stride);
// TODO(jingning): per transformed block zero forcing only enabled for
// luma component. will integrate chroma components as well.
if (x->zcoeff_blk[tx_size][block] && plane == 0) {
pd->eobs[block] = 0;
return;
}
vp9_xform_quant(plane, block, plane_bsize, tx_size, arg);
if (x->optimize)

16
vp9/encoder/vp9_rdopt.c
View File

@ -624,7 +624,12 @@ static void block_yrd_txfm(int plane, int block, BLOCK_SIZE plane_bsize,
rate_block(plane, block, plane_bsize, tx_size, args);
rd1 = RDCOST(x->rdmult, x->rddiv, args->rate[block], args->dist[block]);
rd2 = RDCOST(x->rdmult, x->rddiv, 0, args->sse[block]);
// TODO(jingning): temporarily enabled only for luma component
rd = MIN(rd1, rd2);
if (plane == 0)
x->zcoeff_blk[tx_size][block] = rd1 > rd2;
args->this_rate += args->rate[block];
args->this_dist += args->dist[block];
args->this_sse += args->sse[block];
@ -2234,6 +2239,9 @@ static void store_coding_context(MACROBLOCK *x, PICK_MODE_CONTEXT *ctx,
ctx->comp_pred_diff = (int)comp_pred_diff[COMP_PREDICTION_ONLY];
ctx->hybrid_pred_diff = (int)comp_pred_diff[HYBRID_PREDICTION];
vpx_memcpy(ctx->zcoeff_blk, x->zcoeff_blk[xd->this_mi->mbmi.tx_size],
sizeof(ctx->zcoeff_blk));
// FIXME(rbultje) does this memcpy the whole array? I believe sizeof()
// doesn't actually work this way
memcpy(ctx->tx_rd_diff, tx_size_diff, sizeof(ctx->tx_rd_diff));
@ -3153,8 +3161,11 @@ int64_t vp9_rd_pick_inter_mode_sb(VP9_COMP *cpi, MACROBLOCK *x,
const int bws = num_8x8_blocks_wide_lookup[bsize] / 2;
const int bhs = num_8x8_blocks_high_lookup[bsize] / 2;
int best_skip2 = 0;
unsigned char best_zcoeff_blk[256] = { 0 };
x->skip_encode = cpi->sf.skip_encode_frame && xd->q_index < QIDX_SKIP_THRESH;
vpx_memset(x->zcoeff_blk, 0, sizeof(x->zcoeff_blk));
vpx_memset(ctx->zcoeff_blk, 0, sizeof(ctx->zcoeff_blk));
for (i = 0; i < 4; i++) {
int j;
@ -3826,6 +3837,8 @@ int64_t vp9_rd_pick_inter_mode_sb(VP9_COMP *cpi, MACROBLOCK *x,
best_mbmode = *mbmi;
best_skip2 = this_skip2;
best_partition = *x->partition_info;
vpx_memcpy(best_zcoeff_blk, x->zcoeff_blk[mbmi->tx_size],
sizeof(best_zcoeff_blk));
if (this_mode == RD_I4X4_PRED || this_mode == RD_SPLITMV)
for (i = 0; i < 4; i++)
@ -4021,6 +4034,9 @@ int64_t vp9_rd_pick_inter_mode_sb(VP9_COMP *cpi, MACROBLOCK *x,
mbmi->mv[1].as_int = xd->this_mi->bmi[3].as_mv[1].as_int;
}
vpx_memcpy(x->zcoeff_blk[mbmi->tx_size], best_zcoeff_blk,
sizeof(best_zcoeff_blk));
for (i = 0; i < NB_PREDICTION_TYPES; ++i) {
if (best_pred_rd[i] == INT64_MAX)
best_pred_diff[i] = INT_MIN;