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Use 1D array to store super block filter levels

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As Jim suggested, 1D array was used to store filter levels instead
of 2D array. This used shift_y in setup_mask directly, and saved
few cycles.

Change-Id: If61ab298784861f1806b1cd396d4e4e2e0f097b9
This commit is contained in:
Yunqing Wang 2013-11-12 12:01:25 -08:00
parent 17322275dd
commit ce89309b45
1 changed files with 30 additions and 30 deletions
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60
vp9/common/vp9_loopfilter.c
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@ -32,8 +32,8 @@ typedef struct {
uint16_t left_uv[TX_SIZES];
uint16_t above_uv[TX_SIZES];
uint16_t int_4x4_uv;
uint8_t lfl_y[MI_BLOCK_SIZE][MI_BLOCK_SIZE];
uint8_t lfl_uv[MI_BLOCK_SIZE][MI_BLOCK_SIZE >> 1];
uint8_t lfl_y[64];
uint8_t lfl_uv[16];
} LOOP_FILTER_MASK;
// 64 bit masks for left transform size. Each 1 represents a position where
@ -525,14 +525,16 @@ static void build_masks(const loop_filter_info_n *const lfi_n,
int w = num_8x8_blocks_wide_lookup[block_size];
int h = num_8x8_blocks_high_lookup[block_size];
for (i = shift_y / 8; i < (shift_y / 8 + h); i++) {
uint8_t *lflr = lfm->lfl_y[i] + (shift_y % 8);
vpx_memset(lflr, filter_level, w);
}
// If filter level is 0 we don't loop filter.
if (!filter_level)
if (!filter_level) {
return;
} else {
int index = shift_y;
for (i = 0; i < h; i++) {
vpx_memset(&lfm->lfl_y[index], filter_level, w);
index += 8;
}
}
// These set 1 in the current block size for the block size edges.
// For instance if the block size is 32x16, we'll set :
@ -602,13 +604,15 @@ static void build_y_mask(const loop_filter_info_n *const lfi_n,
int w = num_8x8_blocks_wide_lookup[block_size];
int h = num_8x8_blocks_high_lookup[block_size];
for (i = shift_y / 8; i < (shift_y / 8 + h); i++) {
uint8_t *lflr = lfm->lfl_y[i] + (shift_y % 8);
vpx_memset(lflr, filter_level, w);
}
if (!filter_level)
if (!filter_level) {
return;
} else {
int index = shift_y;
for (i = 0; i < h; i++) {
vpx_memset(&lfm->lfl_y[index], filter_level, w);
index += 8;
}
}
*above_y |= above_prediction_mask[block_size] << shift_y;
*left_y |= left_prediction_mask[block_size] << shift_y;
@ -878,7 +882,7 @@ static void filter_block_plane_non420(VP9_COMMON *cm,
unsigned int mask_8x8[MI_BLOCK_SIZE] = {0};
unsigned int mask_4x4[MI_BLOCK_SIZE] = {0};
unsigned int mask_4x4_int[MI_BLOCK_SIZE] = {0};
uint8_t lfl[MI_BLOCK_SIZE][MI_BLOCK_SIZE];
uint8_t lfl[MI_BLOCK_SIZE * MI_BLOCK_SIZE];
int r, c;
for (r = 0; r < MI_BLOCK_SIZE && mi_row + r < cm->mi_rows; r += row_step) {
@ -907,7 +911,8 @@ static void filter_block_plane_non420(VP9_COMMON *cm,
const int skip_border_4x4_r = ss_y && mi_row + r == cm->mi_rows - 1;
// Filter level can vary per MI
if (!(lfl[r][c >> ss_x] = build_lfi(&cm->lf_info, &mi[0].mbmi)))
if (!(lfl[(r << 3) + (c >> ss_x)] =
build_lfi(&cm->lf_info, &mi[0].mbmi)))
continue;
// Build masks based on the transform size of each block
@ -965,7 +970,7 @@ static void filter_block_plane_non420(VP9_COMMON *cm,
mask_8x8_c & border_mask,
mask_4x4_c & border_mask,
mask_4x4_int[r],
&cm->lf_info, lfl[r]);
&cm->lf_info, &lfl[r << 3]);
dst->buf += 8 * dst->stride;
mi_8x8 += row_step_stride;
}
@ -995,7 +1000,7 @@ static void filter_block_plane_non420(VP9_COMMON *cm,
mask_8x8_r,
mask_4x4_r,
mask_4x4_int_r,
&cm->lf_info, lfl[r]);
&cm->lf_info, &lfl[r << 3]);
dst->buf += 8 * dst->stride;
}
}
@ -1003,17 +1008,13 @@ static void filter_block_plane_non420(VP9_COMMON *cm,
static void filter_block_plane(VP9_COMMON *const cm,
struct macroblockd_plane *const plane,
MODE_INFO **mi_8x8,
int mi_row, int mi_col,
int mi_row,
LOOP_FILTER_MASK *lfm) {
struct buf_2d *const dst = &plane->dst;
uint8_t* const dst0 = dst->buf;
unsigned int mask_4x4_int_row[MI_BLOCK_SIZE] = {0};
int r, c;
(void)mi_8x8;
(void)mi_col;
if (!plane->plane_type) {
uint64_t mask_16x16 = lfm->left_y[TX_16X16];
uint64_t mask_8x8 = lfm->left_y[TX_8X8];
@ -1030,7 +1031,7 @@ static void filter_block_plane(VP9_COMMON *const cm,
mask_8x8 & 0xff,
mask_4x4 & 0xff,
mask_4x4_int_row[r],
&cm->lf_info, lfm->lfl_y[r]);
&cm->lf_info, &lfm->lfl_y[r << 3]);
dst->buf += 8 * dst->stride;
mask_16x16 >>= 8;
@ -1065,7 +1066,7 @@ static void filter_block_plane(VP9_COMMON *const cm,
mask_8x8_r,
mask_4x4_r,
mask_4x4_int_row[r],
&cm->lf_info, lfm->lfl_y[r]);
&cm->lf_info, &lfm->lfl_y[r << 3]);
dst->buf += 8 * dst->stride;
mask_16x16 >>= 8;
@ -1082,7 +1083,7 @@ static void filter_block_plane(VP9_COMMON *const cm,
for (r = 0; r < MI_BLOCK_SIZE && mi_row + r < cm->mi_rows; r += 2) {
if (plane->plane_type == 1) {
for (c = 0; c < (MI_BLOCK_SIZE >> 1); c++)
lfm->lfl_uv[r][c] = lfm->lfl_y[r][c << 1];
lfm->lfl_uv[(r << 1) + c] = lfm->lfl_y[(r << 3) + (c << 1)];
}
mask_4x4_int_row[r] = mask_4x4_int & 0xf;
@ -1092,7 +1093,7 @@ static void filter_block_plane(VP9_COMMON *const cm,
mask_8x8 & 0xf,
mask_4x4 & 0xf,
mask_4x4_int_row[r],
&cm->lf_info, lfm->lfl_uv[r]);
&cm->lf_info, &lfm->lfl_uv[r << 1]);
dst->buf += 8 * dst->stride;
mask_16x16 >>= 4;
@ -1130,7 +1131,7 @@ static void filter_block_plane(VP9_COMMON *const cm,
mask_8x8_r,
mask_4x4_r,
mask_4x4_int_r,
&cm->lf_info, lfm->lfl_uv[r]);
&cm->lf_info, &lfm->lfl_uv[r << 1]);
dst->buf += 8 * dst->stride;
mask_16x16 >>= 4;
@ -1170,8 +1171,7 @@ void vp9_loop_filter_rows(const YV12_BUFFER_CONFIG *frame_buffer,
#if CONFIG_NON420
if (use_420)
#endif
filter_block_plane(cm, &xd->plane[plane], mi_8x8 + mi_col, mi_row,
mi_col, &lfm);
filter_block_plane(cm, &xd->plane[plane], mi_row, &lfm);
#if CONFIG_NON420
else
filter_block_plane_non420(cm, &xd->plane[plane], mi_8x8 + mi_col,