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-rw-r--r--third_party/aom/av1/encoder/aq_variance.c179
1 files changed, 67 insertions, 112 deletions
diff --git a/third_party/aom/av1/encoder/aq_variance.c b/third_party/aom/av1/encoder/aq_variance.c
index 6cb6adc42..58f906bdc 100644
--- a/third_party/aom/av1/encoder/aq_variance.c
+++ b/third_party/aom/av1/encoder/aq_variance.c
@@ -14,34 +14,33 @@
#include "aom_ports/mem.h"
#include "av1/encoder/aq_variance.h"
-
#include "av1/common/seg_common.h"
+#include "av1/encoder/encodeframe.h"
#include "av1/encoder/ratectrl.h"
#include "av1/encoder/rd.h"
#include "av1/encoder/segmentation.h"
#include "av1/encoder/dwt.h"
#include "aom_ports/system_state.h"
+static const double rate_ratio[MAX_SEGMENTS] = { 2.2, 1.7, 1.3, 1.0,
+ 0.9, .8, .7, .6 };
+
+static const double deltaq_rate_ratio[MAX_SEGMENTS] = { 2.5, 2.0, 1.5, 1.0,
+ 0.75, 1.0, 1.0, 1.0 };
#define ENERGY_MIN (-4)
#define ENERGY_MAX (1)
#define ENERGY_SPAN (ENERGY_MAX - ENERGY_MIN + 1)
#define ENERGY_IN_BOUNDS(energy) \
assert((energy) >= ENERGY_MIN && (energy) <= ENERGY_MAX)
-static const double rate_ratio[MAX_SEGMENTS] = { 2.5, 2.0, 1.5, 1.0,
- 0.75, 1.0, 1.0, 1.0 };
-static const int segment_id[ENERGY_SPAN] = { 0, 1, 1, 2, 3, 4 };
-
-#define SEGMENT_ID(i) segment_id[(i)-ENERGY_MIN]
-
DECLARE_ALIGNED(16, static const uint8_t, av1_all_zeros[MAX_SB_SIZE]) = { 0 };
+
DECLARE_ALIGNED(16, static const uint16_t,
av1_highbd_all_zeros[MAX_SB_SIZE]) = { 0 };
-unsigned int av1_vaq_segment_id(int energy) {
- ENERGY_IN_BOUNDS(energy);
- return SEGMENT_ID(energy);
-}
+static const int segment_id[ENERGY_SPAN] = { 0, 1, 1, 2, 3, 4 };
+
+#define SEGMENT_ID(i) segment_id[(i)-ENERGY_MIN]
void av1_vaq_frame_setup(AV1_COMP *cpi) {
AV1_COMMON *cm = &cpi->common;
@@ -51,6 +50,12 @@ void av1_vaq_frame_setup(AV1_COMP *cpi) {
int resolution_change =
cm->prev_frame && (cm->width != cm->prev_frame->width ||
cm->height != cm->prev_frame->height);
+ int avg_energy = (int)(cpi->twopass.mb_av_energy - 2);
+ double avg_ratio;
+ if (avg_energy > 7) avg_energy = 7;
+ if (avg_energy < 0) avg_energy = 0;
+ avg_ratio = rate_ratio[avg_energy];
+
if (resolution_change) {
memset(cpi->segmentation_map, 0, cm->mi_rows * cm->mi_cols);
av1_clearall_segfeatures(seg);
@@ -69,9 +74,11 @@ void av1_vaq_frame_setup(AV1_COMP *cpi) {
aom_clear_system_state();
for (i = 0; i < MAX_SEGMENTS; ++i) {
- int qindex_delta =
- av1_compute_qdelta_by_rate(&cpi->rc, cm->frame_type, cm->base_qindex,
- rate_ratio[i], cm->seq_params.bit_depth);
+ // Set up avg segment id to be 1.0 and adjust the other segments around
+ // it.
+ int qindex_delta = av1_compute_qdelta_by_rate(
+ &cpi->rc, cm->frame_type, cm->base_qindex, rate_ratio[i] / avg_ratio,
+ cm->seq_params.bit_depth);
// We don't allow qindex 0 in a segment if the base value is not 0.
// Q index 0 (lossless) implies 4x4 encoding only and in AQ mode a segment
@@ -87,114 +94,58 @@ void av1_vaq_frame_setup(AV1_COMP *cpi) {
}
}
-/* TODO(agrange, paulwilkins): The block_variance calls the unoptimized versions
- * of variance() and highbd_8_variance(). It should not.
- */
-static void aq_variance(const uint8_t *a, int a_stride, const uint8_t *b,
- int b_stride, int w, int h, unsigned int *sse,
- int *sum) {
- int i, j;
-
- *sum = 0;
- *sse = 0;
+int av1_log_block_var(const AV1_COMP *cpi, MACROBLOCK *x, BLOCK_SIZE bs) {
+ // This functions returns a score for the blocks local variance as calculated
+ // by: sum of the log of the (4x4 variances) of each subblock to the current
+ // block (x,bs)
+ // * 32 / number of pixels in the block_size.
+ // This is used for segmentation because to avoid situations in which a large
+ // block with a gentle gradient gets marked high variance even though each
+ // subblock has a low variance. This allows us to assign the same segment
+ // number for the same sorts of area regardless of how the partitioning goes.
- for (i = 0; i < h; i++) {
- for (j = 0; j < w; j++) {
- const int diff = a[j] - b[j];
- *sum += diff;
- *sse += diff * diff;
- }
-
- a += a_stride;
- b += b_stride;
- }
-}
-
-static void aq_highbd_variance64(const uint8_t *a8, int a_stride,
- const uint8_t *b8, int b_stride, int w, int h,
- uint64_t *sse, uint64_t *sum) {
+ MACROBLOCKD *xd = &x->e_mbd;
+ double var = 0;
+ unsigned int sse;
int i, j;
- uint16_t *a = CONVERT_TO_SHORTPTR(a8);
- uint16_t *b = CONVERT_TO_SHORTPTR(b8);
- *sum = 0;
- *sse = 0;
-
- for (i = 0; i < h; i++) {
- for (j = 0; j < w; j++) {
- const int diff = a[j] - b[j];
- *sum += diff;
- *sse += diff * diff;
- }
- a += a_stride;
- b += b_stride;
- }
-}
-
-static void aq_highbd_8_variance(const uint8_t *a8, int a_stride,
- const uint8_t *b8, int b_stride, int w, int h,
- unsigned int *sse, int *sum) {
- uint64_t sse_long = 0;
- uint64_t sum_long = 0;
- aq_highbd_variance64(a8, a_stride, b8, b_stride, w, h, &sse_long, &sum_long);
- *sse = (unsigned int)sse_long;
- *sum = (int)sum_long;
-}
-
-static unsigned int block_variance(const AV1_COMP *const cpi, MACROBLOCK *x,
- BLOCK_SIZE bs) {
- MACROBLOCKD *xd = &x->e_mbd;
- unsigned int var, sse;
int right_overflow =
(xd->mb_to_right_edge < 0) ? ((-xd->mb_to_right_edge) >> 3) : 0;
int bottom_overflow =
(xd->mb_to_bottom_edge < 0) ? ((-xd->mb_to_bottom_edge) >> 3) : 0;
- if (right_overflow || bottom_overflow) {
- const int bw = MI_SIZE * mi_size_wide[bs] - right_overflow;
- const int bh = MI_SIZE * mi_size_high[bs] - bottom_overflow;
- int avg;
- if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
- aq_highbd_8_variance(x->plane[0].src.buf, x->plane[0].src.stride,
- CONVERT_TO_BYTEPTR(av1_highbd_all_zeros), 0, bw, bh,
- &sse, &avg);
- sse >>= 2 * (xd->bd - 8);
- avg >>= (xd->bd - 8);
- } else {
- aq_variance(x->plane[0].src.buf, x->plane[0].src.stride, av1_all_zeros, 0,
- bw, bh, &sse, &avg);
- }
- var = sse - (unsigned int)(((int64_t)avg * avg) / (bw * bh));
- return (unsigned int)((uint64_t)var * 256) / (bw * bh);
- } else {
- if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
- var =
- cpi->fn_ptr[bs].vf(x->plane[0].src.buf, x->plane[0].src.stride,
- CONVERT_TO_BYTEPTR(av1_highbd_all_zeros), 0, &sse);
- } else {
- var = cpi->fn_ptr[bs].vf(x->plane[0].src.buf, x->plane[0].src.stride,
- av1_all_zeros, 0, &sse);
+ const int bw = MI_SIZE * mi_size_wide[bs] - right_overflow;
+ const int bh = MI_SIZE * mi_size_high[bs] - bottom_overflow;
+
+ aom_clear_system_state();
+
+ for (i = 0; i < bh; i += 4) {
+ for (j = 0; j < bw; j += 4) {
+ if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
+ var +=
+ log(1.0 + cpi->fn_ptr[BLOCK_4X4].vf(
+ x->plane[0].src.buf + i * x->plane[0].src.stride + j,
+ x->plane[0].src.stride,
+ CONVERT_TO_BYTEPTR(av1_highbd_all_zeros), 0, &sse) /
+ 16);
+ } else {
+ var +=
+ log(1.0 + cpi->fn_ptr[BLOCK_4X4].vf(
+ x->plane[0].src.buf + i * x->plane[0].src.stride + j,
+ x->plane[0].src.stride, av1_all_zeros, 0, &sse) /
+ 16);
+ }
}
- return (unsigned int)((uint64_t)var * 256) >> num_pels_log2_lookup[bs];
}
-}
+ // Use average of 4x4 log variance. The range for 8 bit 0 - 9.704121561.
+ var /= (bw / 4 * bh / 4);
+ if (var > 7) var = 7;
-double av1_log_block_var(const AV1_COMP *cpi, MACROBLOCK *x, BLOCK_SIZE bs) {
- unsigned int var = block_variance(cpi, x, bs);
aom_clear_system_state();
- return log(var + 1.0);
+ return (int)(var);
}
#define DEFAULT_E_MIDPOINT 10.0
-int av1_block_energy(const AV1_COMP *cpi, MACROBLOCK *x, BLOCK_SIZE bs) {
- double energy;
- double energy_midpoint;
- aom_clear_system_state();
- energy_midpoint =
- (cpi->oxcf.pass == 2) ? cpi->twopass.mb_av_energy : DEFAULT_E_MIDPOINT;
- energy = av1_log_block_var(cpi, x, bs) - energy_midpoint;
- return clamp((int)round(energy), ENERGY_MIN, ENERGY_MAX);
-}
unsigned int haar_ac_energy(MACROBLOCK *x, BLOCK_SIZE bs) {
MACROBLOCKD *xd = &x->e_mbd;
@@ -231,17 +182,21 @@ int av1_block_wavelet_energy_level(const AV1_COMP *cpi, MACROBLOCK *x,
int av1_compute_deltaq_from_energy_level(const AV1_COMP *const cpi,
int block_var_level) {
- ENERGY_IN_BOUNDS(block_var_level);
-
- const int rate_level = SEGMENT_ID(block_var_level);
+ int rate_level;
const AV1_COMMON *const cm = &cpi->common;
+
+ if (DELTAQ_MODULATION == 1) {
+ ENERGY_IN_BOUNDS(block_var_level);
+ rate_level = SEGMENT_ID(block_var_level);
+ } else {
+ rate_level = block_var_level;
+ }
int qindex_delta = av1_compute_qdelta_by_rate(
- &cpi->rc, cm->frame_type, cm->base_qindex, rate_ratio[rate_level],
+ &cpi->rc, cm->frame_type, cm->base_qindex, deltaq_rate_ratio[rate_level],
cm->seq_params.bit_depth);
if ((cm->base_qindex != 0) && ((cm->base_qindex + qindex_delta) == 0)) {
qindex_delta = -cm->base_qindex + 1;
}
-
return qindex_delta;
}
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