ref: ee5d79995e5e5adc2b4f38f374f3f63624b73c57
parent: 2d924161c74ede567c925ab26ce489d78af12ccd
author: Yaowu Xu <yaowu@google.com>
date: Mon Feb 9 05:21:17 EST 2015
Move computation up to frame level This is to avoid redo the same calculation repeatly, and also allow easier adjustments for further experiments. This commit shall have no effect on quality/compression. Change-Id: I4460acf5c808ff5518da18d21e002c5da58af857
--- a/vp9/encoder/vp9_encodeframe.c
+++ b/vp9/encoder/vp9_encodeframe.c
@@ -471,6 +471,43 @@
return 0;
}
+
+void vp9_set_vbp_thresholds(VP9_COMP *cpi, int q) {+ SPEED_FEATURES *const sf = &cpi->sf;
+ if (sf->partition_search_type != VAR_BASED_PARTITION) {+ return;
+ } else {+ VP9_COMMON *const cm = &cpi->common;
+ const VP9EncoderConfig *const oxcf = &cpi->oxcf;
+ const int is_key_frame = (cm->frame_type == KEY_FRAME);
+ const int use_4x4_partition = is_key_frame;
+ const int low_res = (cm->width <= 352 && cm->height <= 288);
+ const int threshold_multiplier = is_key_frame ? 80 : 4;
+ const int64_t threshold_base = (int64_t)(threshold_multiplier *
+ vp9_convert_qindex_to_q(q, cm->bit_depth));
+ cpi->vbp_threshold = threshold_base;
+ cpi->vbp_threshold_bsize_min = threshold_base << oxcf->speed;
+ cpi->vbp_threshold_bsize_max = threshold_base;
+
+ if (is_key_frame) {+ cpi->vbp_threshold = threshold_base >> 2;
+ cpi->vbp_threshold_bsize_min = threshold_base << 2;
+ } else if (low_res) {+ cpi->vbp_threshold_bsize_min = threshold_base << 3;
+ cpi->vbp_threshold_bsize_max = threshold_base >> 2;
+ }
+ // TODO(marpan): Allow 4x4 partitions for inter-frames.
+ // use_4x4_partition = (variance4x4downsample[i2 + j] == 1);
+ // If 4x4 partition is not used, then 8x8 partition will be selected
+ // if variance of 16x16 block is very high, so use larger threshold
+ // for 16x16 (threshold_bsize_min) in that case.
+ cpi->vbp_threshold_16x16 = (use_4x4_partition) ?
+ cpi->vbp_threshold : cpi->vbp_threshold_bsize_min;
+ cpi->vbp_bsize_min = (use_4x4_partition) ? BLOCK_8X8 : BLOCK_16X16;
+ }
+}
+
+
// This function chooses partitioning based on the variance between source and
// reconstructed last, where variance is computed for downs-sampled inputs.
static void choose_partitioning(VP9_COMP *cpi,
@@ -479,7 +516,6 @@
int mi_row, int mi_col) {VP9_COMMON * const cm = &cpi->common;
MACROBLOCKD *xd = &x->e_mbd;
-
int i, j, k, m;
v64x64 vt;
v16x16 vt2[16];
@@ -489,35 +525,13 @@
int dp;
int pixels_wide = 64, pixels_high = 64;
const YV12_BUFFER_CONFIG *yv12 = get_ref_frame_buffer(cpi, LAST_FRAME);
- const struct scale_factors *const sf = &cm->frame_refs[LAST_FRAME - 1].sf;
+
// Always use 4x4 partition for key frame.
const int is_key_frame = (cm->frame_type == KEY_FRAME);
const int use_4x4_partition = is_key_frame;
+ const int low_res = (cm->width <= 352 && cm->height <= 288);
int variance4x4downsample[16];
- int low_res = (cm->width <= 352 && cm->height <= 288) ? 1 : 0;
- const int threshold_multiplier = is_key_frame ? 80 : 4;
- int64_t threshold_base;
- int64_t threshold;
- int64_t threshold_bsize_min;
- int64_t threshold_bsize_max;
- vp9_clear_system_state();
- threshold_base = (int64_t)(threshold_multiplier *
- vp9_convert_qindex_to_q(cm->base_qindex, cm->bit_depth));
- threshold = threshold_base;
- threshold_bsize_min = threshold_base << cpi->oxcf.speed;
- threshold_bsize_max = threshold_base;
-
- // Modify thresholds for key frame and for low-resolutions (set lower
- // thresholds to favor split).
- if (is_key_frame) {- threshold = threshold_base >> 2;
- threshold_bsize_min = threshold_base << 2;
- } else if (low_res) {- threshold_bsize_min = threshold_base << 3;
- threshold_bsize_max = threshold_base >> 2;
- }
-
set_offsets(cpi, tile, x, mi_row, mi_col, BLOCK_64X64);
if (xd->mb_to_right_edge < 0)
@@ -531,7 +545,8 @@
if (!is_key_frame) {MB_MODE_INFO *mbmi = &xd->mi[0].src_mi->mbmi;
unsigned int var = 0, sse;
- vp9_setup_pre_planes(xd, 0, yv12, mi_row, mi_col, sf);
+ vp9_setup_pre_planes(xd, 0, yv12, mi_row, mi_col,
+ &cm->frame_refs[LAST_FRAME - 1].sf);
mbmi->ref_frame[0] = LAST_FRAME;
mbmi->ref_frame[1] = NONE;
mbmi->sb_type = BLOCK_64X64;
@@ -619,7 +634,7 @@
}
if (is_key_frame || (low_res &&
vt.split[i].split[j].part_variances.none.variance >
- (threshold << 1))) {+ (cpi->vbp_threshold << 1))) {// Go down to 4x4 down-sampling for variance.
variance4x4downsample[i2 + j] = 1;
for (k = 0; k < 4; k++) {@@ -680,12 +695,11 @@
}
fill_variance_tree(&vt, BLOCK_64X64);
-
// Now go through the entire structure, splitting every block size until
// we get to one that's got a variance lower than our threshold.
if ( mi_col + 8 > cm->mi_cols || mi_row + 8 > cm->mi_rows ||
!set_vt_partitioning(cpi, xd, &vt, BLOCK_64X64, mi_row, mi_col,
- threshold_bsize_max, BLOCK_16X16)) {+ cpi->vbp_threshold_bsize_max, BLOCK_16X16)) { for (i = 0; i < 4; ++i) {const int x32_idx = ((i & 1) << 2);
const int y32_idx = ((i >> 1) << 2);
@@ -692,18 +706,11 @@
const int i2 = i << 2;
if (!set_vt_partitioning(cpi, xd, &vt.split[i], BLOCK_32X32,
(mi_row + y32_idx), (mi_col + x32_idx),
- threshold, BLOCK_16X16)) {+ cpi->vbp_threshold,
+ BLOCK_16X16)) { for (j = 0; j < 4; ++j) {const int x16_idx = ((j & 1) << 1);
const int y16_idx = ((j >> 1) << 1);
- // TODO(marpan): Allow 4x4 partitions for inter-frames.
- // use_4x4_partition = (variance4x4downsample[i2 + j] == 1);
- // If 4x4 partition is not used, then 8x8 partition will be selected
- // if variance of 16x16 block is very high, so use larger threshold
- // for 16x16 (threshold_bsize_min) in that case.
- uint64_t threshold_16x16 = (use_4x4_partition) ? threshold :
- threshold_bsize_min;
- BLOCK_SIZE bsize_min = (use_4x4_partition) ? BLOCK_8X8 : BLOCK_16X16;
// For inter frames: if variance4x4downsample[] == 1 for this 16x16
// block, then the variance is based on 4x4 down-sampling, so use vt2
// in set_vt_partioning(), otherwise use vt.
@@ -713,7 +720,8 @@
if (!set_vt_partitioning(cpi, xd, vtemp, BLOCK_16X16,
mi_row + y32_idx + y16_idx,
mi_col + x32_idx + x16_idx,
- threshold_16x16, bsize_min)) {+ cpi->vbp_threshold_16x16,
+ cpi->vbp_bsize_min)) { for (k = 0; k < 4; ++k) {const int x8_idx = (k & 1);
const int y8_idx = (k >> 1);
@@ -722,7 +730,8 @@
BLOCK_8X8,
mi_row + y32_idx + y16_idx + y8_idx,
mi_col + x32_idx + x16_idx + x8_idx,
- threshold_bsize_min, BLOCK_8X8)) {+ cpi->vbp_threshold_bsize_min,
+ BLOCK_8X8)) {set_block_size(cpi, xd,
(mi_row + y32_idx + y16_idx + y8_idx),
(mi_col + x32_idx + x16_idx + x8_idx),
--- a/vp9/encoder/vp9_encodeframe.h
+++ b/vp9/encoder/vp9_encodeframe.h
@@ -38,6 +38,8 @@
void vp9_encode_tile(struct VP9_COMP *cpi, struct ThreadData *td,
int tile_row, int tile_col);
+void vp9_set_vbp_thresholds(struct VP9_COMP *cpi, int q);
+
#ifdef __cplusplus
} // extern "C"
#endif
--- a/vp9/encoder/vp9_encoder.c
+++ b/vp9/encoder/vp9_encoder.c
@@ -2800,7 +2800,10 @@
set_size_dependent_vars(cpi, &q, &bottom_index, &top_index);
vp9_set_quantizer(cm, q);
+ vp9_set_vbp_thresholds(cpi, q);
+
setup_frame(cpi);
+
// Variance adaptive and in frame q adjustment experiments are mutually
// exclusive.
if (cpi->oxcf.aq_mode == VARIANCE_AQ) {--- a/vp9/encoder/vp9_encoder.h
+++ b/vp9/encoder/vp9_encoder.h
@@ -450,6 +450,13 @@
int resize_pending;
+ // VAR_BASED_PARTITION thresholds
+ int64_t vbp_threshold;
+ int64_t vbp_threshold_bsize_min;
+ int64_t vbp_threshold_bsize_max;
+ int64_t vbp_threshold_16x16;
+ BLOCK_SIZE vbp_bsize_min;
+
// Multi-threading
int num_workers;
VP9Worker *workers;
--- a/vp9/encoder/vp9_speed_features.h
+++ b/vp9/encoder/vp9_speed_features.h
@@ -421,4 +421,3 @@
#endif
#endif // VP9_ENCODER_VP9_SPEED_FEATURES_H_
-
--
⑨