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Commit 2826c1d2 authored by Tim Kopp's avatar Tim Kopp
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Implemented motion compensation for VP9 denoiser 

Change-Id: Iee21eb0ecc5a1fe2c56fb3df0cee0ead6d139ed1
parent 0299a603
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vp9/encoder/vp9_denoiser.c
View file @ 2826c1d2
......@@ -12,6 +12,7 @@
#include <limits.h>
#include "vpx_scale/yv12config.h"
#include "vpx/vpx_integer.h"
#include "vp9/common/vp9_reconinter.h"
#include "vp9/encoder/vp9_denoiser.h"
static const int widths[] = {4, 4, 8, 8, 8, 16, 16, 16, 32, 32, 32, 64, 64};
......@@ -89,6 +90,138 @@ void copy_block(uint8_t *dest, int dest_stride,
}
}
static int perform_motion_compensation(VP9_DENOISER *denoiser, MACROBLOCK *mb,
BLOCK_SIZE bs, int increase_denoising,
int mi_row, int mi_col) {
// constants
// TODO(tkopp): empirically determine good constants, or functions of block
// size.
int NOISE_MOTION_THRESHOLD = 25 * 25;
int SSE_DIFF_THRESHOLD = heights[bs] * widths[bs] * 20;
unsigned int SSE_THRESH = heights[bs] * widths[bs] * 40;
unsigned int SSE_THRESH_HI = heights[bs] * widths[bs] * 60;
int mv_col, mv_row;
int sse_diff = denoiser->zero_mv_sse - denoiser->best_sse;
int sse_diff_thresh;
int sse_thresh;
MV_REFERENCE_FRAME frame;
MACROBLOCKD *filter_mbd = &mb->e_mbd;
MB_MODE_INFO *mbmi = &filter_mbd->mi[0]->mbmi;
// We will restore these after motion compensation.
MB_MODE_INFO saved_mbmi = *mbmi;
struct buf_2d saved_dst = filter_mbd->plane[0].dst;
struct buf_2d saved_pre[2];
saved_pre[0] = filter_mbd->plane[0].pre[0];
saved_pre[1] = filter_mbd->plane[0].pre[1];
// Decide the threshold for sum squared error.
mv_col = denoiser->best_sse_mv.as_mv.col;
mv_row = denoiser->best_sse_mv.as_mv.row;
if (mv_row * mv_row + mv_col * mv_col > NOISE_MOTION_THRESHOLD) {
sse_diff_thresh = 0;
} else {
sse_diff_thresh = SSE_DIFF_THRESHOLD;
}
frame = denoiser->best_reference_frame;
// If the best reference frame uses inter-prediction and there is enough of a
// difference in sum-squared-error, use it.
if (frame != INTRA_FRAME && sse_diff > sse_diff_thresh) {
mbmi->ref_frame[0] = denoiser->best_reference_frame;
mbmi->mode = denoiser->best_sse_inter_mode;
mbmi->mv[0] = denoiser->best_sse_mv;
} else {
// Otherwise, use the zero reference frame.
frame = denoiser->best_zeromv_reference_frame;
mbmi->ref_frame[0] = denoiser->best_zeromv_reference_frame;
mbmi->mode = ZEROMV;
mbmi->mv[0].as_int = 0;
denoiser->best_sse_inter_mode = ZEROMV;
denoiser->best_sse_mv.as_int = 0;
denoiser->best_sse = denoiser->zero_mv_sse;
}
// Set the pointers in the MACROBLOCKD to point to the buffers in the denoiser
// struct.
filter_mbd->plane[0].pre[0].buf =
block_start(denoiser->running_avg_y[frame].y_buffer,
denoiser->running_avg_y[frame].y_stride,
mi_row, mi_col);
filter_mbd->plane[0].pre[0].stride = denoiser->running_avg_y[frame].y_stride;
filter_mbd->plane[1].pre[0].buf =
block_start(denoiser->running_avg_y[frame].u_buffer,
denoiser->running_avg_y[frame].uv_stride,
mi_row, mi_col);
filter_mbd->plane[1].pre[0].stride = denoiser->running_avg_y[frame].uv_stride;
filter_mbd->plane[2].pre[0].buf =
block_start(denoiser->running_avg_y[frame].v_buffer,
denoiser->running_avg_y[frame].uv_stride,
mi_row, mi_col);
filter_mbd->plane[2].pre[0].stride = denoiser->running_avg_y[frame].uv_stride;
filter_mbd->plane[0].pre[1].buf =
block_start(denoiser->running_avg_y[frame].y_buffer,
denoiser->running_avg_y[frame].y_stride,
mi_row, mi_col);
filter_mbd->plane[0].pre[1].stride = denoiser->running_avg_y[frame].y_stride;
filter_mbd->plane[1].pre[1].buf =
block_start(denoiser->running_avg_y[frame].u_buffer,
denoiser->running_avg_y[frame].uv_stride,
mi_row, mi_col);
filter_mbd->plane[1].pre[1].stride = denoiser->running_avg_y[frame].uv_stride;
filter_mbd->plane[2].pre[1].buf =
block_start(denoiser->running_avg_y[frame].v_buffer,
denoiser->running_avg_y[frame].uv_stride,
mi_row, mi_col);
filter_mbd->plane[2].pre[1].stride = denoiser->running_avg_y[frame].uv_stride;
filter_mbd->plane[0].dst.buf =
block_start(denoiser->mc_running_avg_y.y_buffer,
denoiser->mc_running_avg_y.y_stride,
mi_row, mi_col);
filter_mbd->plane[0].dst.stride = denoiser->mc_running_avg_y.y_stride;
filter_mbd->plane[1].dst.buf =
block_start(denoiser->mc_running_avg_y.u_buffer,
denoiser->mc_running_avg_y.uv_stride,
mi_row, mi_col);
filter_mbd->plane[1].dst.stride = denoiser->mc_running_avg_y.y_stride;
filter_mbd->plane[2].dst.buf =
block_start(denoiser->mc_running_avg_y.v_buffer,
denoiser->mc_running_avg_y.uv_stride,
mi_row, mi_col);
filter_mbd->plane[2].dst.stride = denoiser->mc_running_avg_y.y_stride;
vp9_build_inter_predictors_sby(filter_mbd, mv_row, mv_col, bs);
// Restore everything to its original state
filter_mbd->plane[0].pre[0] = saved_pre[0];
filter_mbd->plane[0].pre[1] = saved_pre[1];
filter_mbd->plane[0].dst = saved_dst;
*mbmi = saved_mbmi;
mv_row = denoiser->best_sse_mv.as_mv.row;
mv_col = denoiser->best_sse_mv.as_mv.col;
sse_thresh = denoiser->increase_denoising ? SSE_THRESH_HI : SSE_THRESH;
// TODO(tkopp) why 8?
if (denoiser->best_sse > sse_thresh ||
mv_row * mv_row + mv_col * mv_col > 8 * NOISE_MOTION_THRESHOLD) {
return COPY_BLOCK;
}
return FILTER_BLOCK;
}
void vp9_denoiser_denoise(VP9_DENOISER *denoiser, MACROBLOCK *mb,
int mi_row, int mi_col, BLOCK_SIZE bs) {
int decision = COPY_BLOCK;
......@@ -100,7 +233,9 @@ void vp9_denoiser_denoise(VP9_DENOISER *denoiser, MACROBLOCK *mb,
mi_row, mi_col);
struct buf_2d src = mb->plane[0].src;
decision = perform_motion_compensation(denoiser, mb, bs,
denoiser->increase_denoising,
mi_row, mi_col);
update_running_avg(mc_avg_start, mc_avg.y_stride, avg_start, avg.y_stride,
mb->plane[0].src.buf, mb->plane[0].src.stride, 0, bs);
......
vp9/encoder/vp9_encoder.c
View file @ 2826c1d2
......@@ -653,12 +653,7 @@ void vp9_change_config(struct VP9_COMP *cpi, const VP9EncoderConfig *oxcf) {
#if CONFIG_DENOISING
vp9_denoiser_alloc(&(cpi->denoiser), cm->width, cm->height,
// TODO(tkopp) An unrelated bug causes
// cm->subsampling_{x,y} to be uninitialized at this point
// in execution. For now we assume YUV-420, which is x/y
// subsampling of 1.
1, 1,
// cm->subsampling_x, cm->subsampling_y,
cm->subsampling_x, cm->subsampling_y,
VP9_ENC_BORDER_IN_PIXELS);
#endif
}
......@@ -1271,7 +1266,7 @@ int vp9_update_entropy(VP9_COMP * cpi, int update) {
}
#if defined(OUTPUT_YUV_SRC) || defined(OUTPUT_YUV_DENOISED)
#if defined(OUTPUT_YUV_SRC)
void vp9_write_yuv_frame(YV12_BUFFER_CONFIG *s, FILE *f) {
uint8_t *src = s->y_buffer;
int h = s->y_height;
......@@ -1299,6 +1294,38 @@ void vp9_write_yuv_frame(YV12_BUFFER_CONFIG *s, FILE *f) {
}
#endif
#if defined(OUTPUT_YUV_DENOISED)
// The denoiser buffer is allocated as a YUV 440 buffer. This function writes it
// as YUV 420. We simply use the top-left pixels of the UV buffers, since we do
// not denoise the UV channels at this time. If ever we implement UV channel
// denoising we will have to modify this.
void vp9_write_yuv_frame_420(YV12_BUFFER_CONFIG *s, FILE *f) {
uint8_t *src = s->y_buffer;
int h = s->y_height;
do {
fwrite(src, s->y_width, 1, f);
src += s->y_stride;
} while (--h);
src = s->u_buffer;
h = s->uv_height / 2;
do {
fwrite(src, s->uv_width / 2, 1, f);
src += s->uv_stride + s->uv_width / 2;
} while (--h);
src = s->v_buffer;
h = s->uv_height / 2;
do {
fwrite(src, s->uv_width / 2, 1, f);
src += s->uv_stride + s->uv_width / 2;
} while (--h);
}
#endif
#ifdef OUTPUT_YUV_REC
void vp9_write_yuv_rec_frame(VP9_COMMON *cm) {
YV12_BUFFER_CONFIG *s = cm->frame_to_show;
......@@ -2134,7 +2161,7 @@ static void encode_frame_to_data_rate(VP9_COMP *cpi,
#endif
#ifdef OUTPUT_YUV_DENOISED
vp9_write_yuv_frame(&cpi->denoiser.running_avg_y[INTRA_FRAME],
vp9_write_yuv_frame_420(&cpi->denoiser.running_avg_y[INTRA_FRAME],
yuv_denoised_file);
#endif
#ifdef OUTPUT_YUV_SRC
......
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