mirror of https://git.ffmpeg.org/ffmpeg.git
vf_psnr: add channel weighting based on chroma subsampling.
Also add per-channel psnr stream averages to final log message. Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
parent
235e903b63
commit
0303d43964
|
@ -25,6 +25,7 @@
|
|||
* Caculate the PSNR between two input videos.
|
||||
*/
|
||||
|
||||
#include "libavutil/avstring.h"
|
||||
#include "libavutil/opt.h"
|
||||
#include "libavutil/pixdesc.h"
|
||||
#include "avfilter.h"
|
||||
|
@ -37,7 +38,7 @@
|
|||
typedef struct PSNRContext {
|
||||
const AVClass *class;
|
||||
FFDualInputContext dinput;
|
||||
double mse, min_mse, max_mse;
|
||||
double mse, min_mse, max_mse, mse_comp[4];
|
||||
uint64_t nb_frames;
|
||||
FILE *stats_file;
|
||||
char *stats_file_str;
|
||||
|
@ -48,6 +49,7 @@ typedef struct PSNRContext {
|
|||
int nb_components;
|
||||
int planewidth[4];
|
||||
int planeheight[4];
|
||||
double planeweight[4];
|
||||
|
||||
void (*compute_mse)(struct PSNRContext *s,
|
||||
const uint8_t *m[4], const int ml[4],
|
||||
|
@ -158,13 +160,14 @@ static AVFrame *do_psnr(AVFilterContext *ctx, AVFrame *main,
|
|||
main->width, main->height, comp_mse);
|
||||
|
||||
for (j = 0; j < s->nb_components; j++)
|
||||
mse += comp_mse[j];
|
||||
mse /= s->nb_components;
|
||||
mse += comp_mse[j] * s->planeweight[j];
|
||||
|
||||
s->min_mse = FFMIN(s->min_mse, mse);
|
||||
s->max_mse = FFMAX(s->max_mse, mse);
|
||||
|
||||
s->mse += mse;
|
||||
for (j = 0; j < s->nb_components; j++)
|
||||
s->mse_comp[j] += comp_mse[j];
|
||||
s->nb_frames++;
|
||||
|
||||
for (j = 0; j < s->nb_components; j++) {
|
||||
|
@ -243,6 +246,7 @@ static int config_input_ref(AVFilterLink *inlink)
|
|||
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
|
||||
AVFilterContext *ctx = inlink->dst;
|
||||
PSNRContext *s = ctx->priv;
|
||||
unsigned sum;
|
||||
int j;
|
||||
|
||||
s->nb_components = desc->nb_components;
|
||||
|
@ -290,14 +294,17 @@ static int config_input_ref(AVFilterLink *inlink)
|
|||
s->comps[2] = s->is_rgb ? 'b' : 'v' ;
|
||||
s->comps[3] = 'a';
|
||||
|
||||
for (j = 0; j < s->nb_components; j++)
|
||||
s->average_max += s->max[j];
|
||||
s->average_max /= s->nb_components;
|
||||
|
||||
s->planeheight[1] = s->planeheight[2] = FF_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
|
||||
s->planeheight[0] = s->planeheight[3] = inlink->h;
|
||||
s->planewidth[1] = s->planewidth[2] = FF_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
|
||||
s->planewidth[0] = s->planewidth[3] = inlink->w;
|
||||
sum = 0;
|
||||
for (j = 0; j < s->nb_components; j++)
|
||||
sum += s->planeheight[j] * s->planewidth[j];
|
||||
for (j = 0; j < s->nb_components; j++) {
|
||||
s->planeweight[j] = (double) s->planeheight[j] * s->planewidth[j] / sum;
|
||||
s->average_max += s->max[j] * s->planeweight[j];
|
||||
}
|
||||
|
||||
s->compute_mse = desc->comp[0].depth_minus1 > 7 ? compute_images_mse_16bit : compute_images_mse;
|
||||
|
||||
|
@ -339,7 +346,15 @@ static av_cold void uninit(AVFilterContext *ctx)
|
|||
PSNRContext *s = ctx->priv;
|
||||
|
||||
if (s->nb_frames > 0) {
|
||||
av_log(ctx, AV_LOG_INFO, "PSNR average:%0.2f min:%0.2f max:%0.2f\n",
|
||||
int j;
|
||||
char buf[256];
|
||||
|
||||
buf[0] = 0;
|
||||
for (j = 0; j < s->nb_components; j++)
|
||||
av_strlcatf(buf, sizeof(buf), " %c:%0.2f", s->comps[j],
|
||||
get_psnr(s->mse_comp[j], s->nb_frames, s->max[j]));
|
||||
av_log(ctx, AV_LOG_INFO, "PSNR%s average:%0.2f min:%0.2f max:%0.2f\n",
|
||||
buf,
|
||||
get_psnr(s->mse, s->nb_frames, s->average_max),
|
||||
get_psnr(s->max_mse, 1, s->average_max),
|
||||
get_psnr(s->min_mse, 1, s->average_max));
|
||||
|
|
Loading…
Reference in New Issue