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Revisited rd_pick_intra4x4block

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Removed unnecessary copies.  No noticeable speed gains.


Change-Id: I996c50c23fedd06d54ee7a3e762cbf559cc4a9d1
This commit is contained in:
Scott LaVarnway 2011-02-24 13:31:47 -05:00
parent 418f4219fa
commit 658454a04c
1 changed files with 23 additions and 42 deletions
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65
vp8/encoder/rdopt.c
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@ -584,33 +584,14 @@ static void macro_block_yrd( MACROBLOCK *mb,
*Rate = vp8_rdcost_mby(mb);
}
static void save_predictor(unsigned char *predictor, unsigned char *dst)
static void copy_predictor(unsigned char *dst, const unsigned char *predictor)
{
int r, c;
for (r = 0; r < 4; r++)
{
for (c = 0; c < 4; c++)
{
*dst = predictor[c];
dst++;
}
predictor += 16;
}
}
static void restore_predictor(unsigned char *predictor, unsigned char *dst)
{
int r, c;
for (r = 0; r < 4; r++)
{
for (c = 0; c < 4; c++)
{
predictor[c] = *dst;
dst++;
}
predictor += 16;
}
const unsigned int *p = (const unsigned int *)predictor;
unsigned int *d = (unsigned int *)dst;
d[0] = p[0];
d[4] = p[4];
d[8] = p[8];
d[12] = p[12];
}
static int rd_pick_intra4x4block(
VP8_COMP *cpi,
@ -633,9 +614,13 @@ static int rd_pick_intra4x4block(
ENTROPY_CONTEXT ta = *a, tempa = *a;
ENTROPY_CONTEXT tl = *l, templ = *l;
DECLARE_ALIGNED_ARRAY(16, unsigned char, predictor, 16);
DECLARE_ALIGNED_ARRAY(16, short, dqcoeff, 16);
/*
* The predictor buffer is a 2d buffer with a stride of 16. Create
* a temp buffer that meets the stride requirements, but we are only
* interested in the left 4x4 block
* */
DECLARE_ALIGNED_ARRAY(16, unsigned char, best_predictor, 16*4);
DECLARE_ALIGNED_ARRAY(16, short, best_dqcoeff, 16);
for (mode = B_DC_PRED; mode <= B_HU_PRED; mode++)
{
@ -667,21 +652,17 @@ static int rd_pick_intra4x4block(
*best_mode = mode;
*a = tempa;
*l = templ;
save_predictor(b->predictor, predictor);
vpx_memcpy(dqcoeff, b->dqcoeff, 32);
copy_predictor(best_predictor, b->predictor);
vpx_memcpy(best_dqcoeff, b->dqcoeff, 32);
}
}
b->bmi.mode = (B_PREDICTION_MODE)(*best_mode);
restore_predictor(b->predictor, predictor);
vpx_memcpy(b->dqcoeff, dqcoeff, 32);
IDCT_INVOKE(IF_RTCD(&cpi->rtcd.common->idct), idct16)(b->dqcoeff, b->diff, 32);
RECON_INVOKE(IF_RTCD(&cpi->rtcd.common->recon), recon)(b->predictor, b->diff, *(b->base_dst) + b->dst, b->dst_stride);
IDCT_INVOKE(IF_RTCD(&cpi->rtcd.common->idct), idct16)(best_dqcoeff, b->diff, 32);
RECON_INVOKE(IF_RTCD(&cpi->rtcd.common->recon), recon)(best_predictor, b->diff, *(b->base_dst) + b->dst, b->dst_stride);
return best_rd;
}
int vp8_rd_pick_intra4x4mby_modes(VP8_COMP *cpi, MACROBLOCK *mb, int *Rate,
@ -692,7 +673,7 @@ int vp8_rd_pick_intra4x4mby_modes(VP8_COMP *cpi, MACROBLOCK *mb, int *Rate,
int cost = mb->mbmode_cost [xd->frame_type] [B_PRED];
int distortion = 0;
int tot_rate_y = 0;
int total_rd = 0;
long long total_rd = 0;
ENTROPY_CONTEXT_PLANES t_above, t_left;
ENTROPY_CONTEXT *ta;
ENTROPY_CONTEXT *tl;
@ -733,12 +714,12 @@ int vp8_rd_pick_intra4x4mby_modes(VP8_COMP *cpi, MACROBLOCK *mb, int *Rate,
tot_rate_y += ry;
mic->bmi[i].mode = xd->block[i].bmi.mode = best_mode;
if(total_rd >= best_rd)
break;
if(total_rd >= (long long)best_rd)
break;
}
if(total_rd >= best_rd)
return INT_MAX;
if(total_rd >= (long long)best_rd)
return INT_MAX;
*Rate = cost;
*rate_y += tot_rate_y;