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-rw-r--r--vp9/encoder/vp9_encodeframe.c16
-rw-r--r--vp9/encoder/vp9_firstpass.c15
-rw-r--r--vp9/encoder/vp9_rdopt.c64
-rw-r--r--vp9/encoder/vp9_rdopt.h9
4 files changed, 84 insertions, 20 deletions
diff --git a/vp9/encoder/vp9_encodeframe.c b/vp9/encoder/vp9_encodeframe.c
index 45918ecc9..10a62ef69 100644
--- a/vp9/encoder/vp9_encodeframe.c
+++ b/vp9/encoder/vp9_encodeframe.c
@@ -99,9 +99,9 @@ static const uint16_t VP9_HIGH_VAR_OFFS_12[64] = {
};
#endif // CONFIG_VP9_HIGHBITDEPTH
-static unsigned int get_sby_perpixel_variance(VP9_COMP *cpi,
- const struct buf_2d *ref,
- BLOCK_SIZE bs) {
+unsigned int vp9_get_sby_perpixel_variance(VP9_COMP *cpi,
+ const struct buf_2d *ref,
+ BLOCK_SIZE bs) {
unsigned int sse;
const unsigned int var = cpi->fn_ptr[bs].vf(ref->buf, ref->stride,
VP9_VAR_OFFS, 0, &sse);
@@ -109,7 +109,7 @@ static unsigned int get_sby_perpixel_variance(VP9_COMP *cpi,
}
#if CONFIG_VP9_HIGHBITDEPTH
-static unsigned int high_get_sby_perpixel_variance(
+unsigned int vp9_high_get_sby_perpixel_variance(
VP9_COMP *cpi, const struct buf_2d *ref, BLOCK_SIZE bs, int bd) {
unsigned int var, sse;
switch (bd) {
@@ -1073,13 +1073,15 @@ static void rd_pick_sb_modes(VP9_COMP *cpi,
#if CONFIG_VP9_HIGHBITDEPTH
if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
x->source_variance =
- high_get_sby_perpixel_variance(cpi, &x->plane[0].src, bsize, xd->bd);
+ vp9_high_get_sby_perpixel_variance(cpi, &x->plane[0].src,
+ bsize, xd->bd);
} else {
x->source_variance =
- get_sby_perpixel_variance(cpi, &x->plane[0].src, bsize);
+ vp9_get_sby_perpixel_variance(cpi, &x->plane[0].src, bsize);
}
#else
- x->source_variance = get_sby_perpixel_variance(cpi, &x->plane[0].src, bsize);
+ x->source_variance =
+ vp9_get_sby_perpixel_variance(cpi, &x->plane[0].src, bsize);
#endif // CONFIG_VP9_HIGHBITDEPTH
// Save rdmult before it might be changed, so it can be restored later.
diff --git a/vp9/encoder/vp9_firstpass.c b/vp9/encoder/vp9_firstpass.c
index 3f28e0ff3..b5c3658b3 100644
--- a/vp9/encoder/vp9_firstpass.c
+++ b/vp9/encoder/vp9_firstpass.c
@@ -61,12 +61,9 @@
#define RC_FACTOR_MAX 1.75
-#define INTRA_WEIGHT_EXPERIMENT 0
-#if INTRA_WEIGHT_EXPERIMENT
#define NCOUNT_INTRA_THRESH 8192
#define NCOUNT_INTRA_FACTOR 3
#define NCOUNT_FRAME_II_THRESH 5.0
-#endif
#define DOUBLE_DIVIDE_CHECK(x) ((x) < 0 ? (x) - 0.000001 : (x) + 0.000001)
@@ -832,7 +829,6 @@ void vp9_first_pass(VP9_COMP *cpi, const struct lookahead_entry *source) {
// Keep a count of cases where the inter and intra were very close
// and very low. This helps with scene cut detection for example in
// cropped clips with black bars at the sides or top and bottom.
-#if INTRA_WEIGHT_EXPERIMENT
if (((this_error - intrapenalty) * 9 <= motion_error * 10) &&
(this_error < (2 * intrapenalty))) {
neutral_count += 1.0;
@@ -843,12 +839,6 @@ void vp9_first_pass(VP9_COMP *cpi, const struct lookahead_entry *source) {
neutral_count += (double)motion_error /
DOUBLE_DIVIDE_CHECK((double)this_error);
}
-#else
- if (((this_error - intrapenalty) * 9 <= motion_error * 10) &&
- (this_error < (2 * intrapenalty))) {
- neutral_count += 1.0;
- }
-#endif
mv.row *= 8;
mv.col *= 8;
@@ -1291,11 +1281,10 @@ static double get_sr_decay_rate(const VP9_COMP *cpi,
frame->pcnt_motion * ((frame->mvc_abs + frame->mvr_abs) / 2);
modified_pct_inter = frame->pcnt_inter;
-#if INTRA_WEIGHT_EXPERIMENT
if ((frame->intra_error / DOUBLE_DIVIDE_CHECK(frame->coded_error)) <
- (double)NCOUNT_FRAME_II_THRESH)
+ (double)NCOUNT_FRAME_II_THRESH) {
modified_pct_inter = frame->pcnt_inter - frame->pcnt_neutral;
-#endif
+ }
modified_pcnt_intra = 100 * (1.0 - modified_pct_inter);
diff --git a/vp9/encoder/vp9_rdopt.c b/vp9/encoder/vp9_rdopt.c
index 09512df18..5efa40bfc 100644
--- a/vp9/encoder/vp9_rdopt.c
+++ b/vp9/encoder/vp9_rdopt.c
@@ -2821,6 +2821,65 @@ void vp9_rd_pick_intra_mode_sb(VP9_COMP *cpi, MACROBLOCK *x,
rd_cost->rdcost = RDCOST(x->rdmult, x->rddiv, rd_cost->rate, rd_cost->dist);
}
+// This function is designed to apply a bias or adjustment to an rd value based
+// on the relative variance of the source and reconstruction.
+#define LOW_VAR_THRESH 16
+#define VLOW_ADJ_MAX 25
+#define VHIGH_ADJ_MAX 8
+static void rd_variance_adjustment(VP9_COMP *cpi,
+ MACROBLOCK *x,
+ BLOCK_SIZE bsize,
+ int64_t *this_rd,
+ MV_REFERENCE_FRAME ref_frame,
+ unsigned int source_variance) {
+ MACROBLOCKD *const xd = &x->e_mbd;
+ unsigned int recon_variance;
+ unsigned int absvar_diff = 0;
+ int64_t var_error = 0;
+ int64_t var_factor = 0;
+
+ if (*this_rd == INT64_MAX)
+ return;
+
+#if CONFIG_VP9_HIGHBITDEPTH
+ if (xd->cur_buf->flags & YV12_FLAG_HIGHBITDEPTH) {
+ recon_variance =
+ vp9_high_get_sby_perpixel_variance(cpi, &xd->plane[0].dst, bsize, xd->bd);
+ } else {
+ recon_variance =
+ vp9_get_sby_perpixel_variance(cpi, &xd->plane[0].dst, bsize);
+ }
+#else
+ recon_variance =
+ vp9_get_sby_perpixel_variance(cpi, &xd->plane[0].dst, bsize);
+#endif // CONFIG_VP9_HIGHBITDEPTH
+
+ if ((source_variance + recon_variance) > LOW_VAR_THRESH) {
+ absvar_diff = (source_variance > recon_variance)
+ ? (source_variance - recon_variance)
+ : (recon_variance - source_variance);
+
+ var_error = (200 * source_variance * recon_variance) /
+ ((source_variance * source_variance) +
+ (recon_variance * recon_variance));
+ var_error = 100 - var_error;
+ }
+
+ // Source variance above a threshold and ref frame is intra.
+ // This case is targeted mainly at discouraging intra modes that give rise
+ // to a predictor with a low spatial complexity compared to the source.
+ if ((source_variance > LOW_VAR_THRESH) && (ref_frame == INTRA_FRAME) &&
+ (source_variance > recon_variance)) {
+ var_factor = MIN(absvar_diff, MIN(VLOW_ADJ_MAX, var_error));
+ // A second possible case of interest is where the source variance
+ // is very low and we wish to discourage false texture or motion trails.
+ } else if ((source_variance < (LOW_VAR_THRESH >> 1)) &&
+ (recon_variance > source_variance)) {
+ var_factor = MIN(absvar_diff, MIN(VHIGH_ADJ_MAX, var_error));
+ }
+ *this_rd += (*this_rd * var_factor) / 100;
+}
+
void vp9_rd_pick_inter_mode_sb(VP9_COMP *cpi,
TileDataEnc *tile_data,
MACROBLOCK *x,
@@ -3277,6 +3336,11 @@ void vp9_rd_pick_inter_mode_sb(VP9_COMP *cpi,
this_rd = RDCOST(x->rdmult, x->rddiv, rate2, distortion2);
}
+ // Apply an adjustment to the rd value based on the similarity of the
+ // source variance and reconstructed variance.
+ rd_variance_adjustment(cpi, x, bsize, &this_rd,
+ ref_frame, x->source_variance);
+
if (ref_frame == INTRA_FRAME) {
// Keep record of best intra rd
if (this_rd < best_intra_rd) {
diff --git a/vp9/encoder/vp9_rdopt.h b/vp9/encoder/vp9_rdopt.h
index 7bbc3c89a..459b0324b 100644
--- a/vp9/encoder/vp9_rdopt.h
+++ b/vp9/encoder/vp9_rdopt.h
@@ -29,6 +29,15 @@ void vp9_rd_pick_intra_mode_sb(struct VP9_COMP *cpi, struct macroblock *x,
struct RD_COST *rd_cost, BLOCK_SIZE bsize,
PICK_MODE_CONTEXT *ctx, int64_t best_rd);
+unsigned int vp9_get_sby_perpixel_variance(VP9_COMP *cpi,
+ const struct buf_2d *ref,
+ BLOCK_SIZE bs);
+#if CONFIG_VP9_HIGHBITDEPTH
+unsigned int vp9_high_get_sby_perpixel_variance(VP9_COMP *cpi,
+ const struct buf_2d *ref,
+ BLOCK_SIZE bs, int bd);
+#endif
+
void vp9_rd_pick_inter_mode_sb(struct VP9_COMP *cpi,
struct TileDataEnc *tile_data,
struct macroblock *x,
generated by cgit v1.2.3 (git 2.25.1) at 2024-10-12 09:24:47 +0000