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-rw-r--r--libavfilter/vf_psnr.c386
1 files changed, 386 insertions, 0 deletions
diff --git a/libavfilter/vf_psnr.c b/libavfilter/vf_psnr.c
new file mode 100644
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--- /dev/null
+++ b/libavfilter/vf_psnr.c
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+/*
+ * Copyright (c) 2011 Roger Pau Monné <roger.pau@entel.upc.edu>
+ * Copyright (c) 2011 Stefano Sabatini
+ * Copyright (c) 2013 Paul B Mahol
+ *
+ * This file is part of FFmpeg.
+ *
+ * FFmpeg is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Lesser General Public
+ * License as published by the Free Software Foundation; either
+ * version 2.1 of the License, or (at your option) any later version.
+ *
+ * FFmpeg is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * Lesser General Public License for more details.
+ *
+ * You should have received a copy of the GNU Lesser General Public
+ * License along with FFmpeg; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
+ */
+
+/**
+ * @file
+ * Caculate the PSNR between two input videos.
+ */
+
+#include "libavutil/opt.h"
+#include "libavutil/pixdesc.h"
+#include "avfilter.h"
+#include "dualinput.h"
+#include "drawutils.h"
+#include "formats.h"
+#include "internal.h"
+#include "video.h"
+
+typedef struct PSNRContext {
+ const AVClass *class;
+ FFDualInputContext dinput;
+ double mse, min_mse, max_mse;
+ uint64_t nb_frames;
+ FILE *stats_file;
+ char *stats_file_str;
+ int max[4], average_max;
+ int is_rgb;
+ uint8_t rgba_map[4];
+ char comps[4];
+ int nb_components;
+ int planewidth[4];
+ int planeheight[4];
+
+ void (*compute_mse)(struct PSNRContext *s,
+ const uint8_t *m[4], const int ml[4],
+ const uint8_t *r[4], const int rl[4],
+ int w, int h, double mse[4]);
+} PSNRContext;
+
+#define OFFSET(x) offsetof(PSNRContext, x)
+#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
+
+static const AVOption psnr_options[] = {
+ {"stats_file", "Set file where to store per-frame difference information", OFFSET(stats_file_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
+ {"f", "Set file where to store per-frame difference information", OFFSET(stats_file_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
+ { NULL }
+};
+
+AVFILTER_DEFINE_CLASS(psnr);
+
+static inline unsigned pow2(unsigned base)
+{
+ return base*base;
+}
+
+static inline double get_psnr(double mse, uint64_t nb_frames, int max)
+{
+ return 10.0 * log(pow2(max) / (mse / nb_frames)) / log(10.0);
+}
+
+static inline
+void compute_images_mse(PSNRContext *s,
+ const uint8_t *main_data[4], const int main_linesizes[4],
+ const uint8_t *ref_data[4], const int ref_linesizes[4],
+ int w, int h, double mse[4])
+{
+ int i, c, j;
+
+ for (c = 0; c < s->nb_components; c++) {
+ const int outw = s->planewidth[c];
+ const int outh = s->planeheight[c];
+ const uint8_t *main_line = main_data[c];
+ const uint8_t *ref_line = ref_data[c];
+ const int ref_linesize = ref_linesizes[c];
+ const int main_linesize = main_linesizes[c];
+ uint64_t m = 0;
+
+ for (i = 0; i < outh; i++) {
+ int m2 = 0;
+ for (j = 0; j < outw; j++)
+ m2 += pow2(main_line[j] - ref_line[j]);
+ m += m2;
+ ref_line += ref_linesize;
+ main_line += main_linesize;
+ }
+ mse[c] = m / (double)(outw * outh);
+ }
+}
+
+static inline
+void compute_images_mse_16bit(PSNRContext *s,
+ const uint8_t *main_data[4], const int main_linesizes[4],
+ const uint8_t *ref_data[4], const int ref_linesizes[4],
+ int w, int h, double mse[4])
+{
+ int i, c, j;
+
+ for (c = 0; c < s->nb_components; c++) {
+ const int outw = s->planewidth[c];
+ const int outh = s->planeheight[c];
+ const uint16_t *main_line = (uint16_t *)main_data[c];
+ const uint16_t *ref_line = (uint16_t *)ref_data[c];
+ const int ref_linesize = ref_linesizes[c] / 2;
+ const int main_linesize = main_linesizes[c] / 2;
+ uint64_t m = 0;
+
+ for (i = 0; i < outh; i++) {
+ for (j = 0; j < outw; j++)
+ m += pow2(main_line[j] - ref_line[j]);
+ ref_line += ref_linesize;
+ main_line += main_linesize;
+ }
+ mse[c] = m / (double)(outw * outh);
+ }
+}
+
+static void set_meta(AVDictionary **metadata, const char *key, char comp, float d)
+{
+ char value[128];
+ snprintf(value, sizeof(value), "%0.2f", d);
+ if (comp) {
+ char key2[128];
+ snprintf(key2, sizeof(key2), "%s%c", key, comp);
+ av_dict_set(metadata, key2, value, 0);
+ } else {
+ av_dict_set(metadata, key, value, 0);
+ }
+}
+
+static AVFrame *do_psnr(AVFilterContext *ctx, AVFrame *main,
+ const AVFrame *ref)
+{
+ PSNRContext *s = ctx->priv;
+ double comp_mse[4], mse = 0;
+ int j, c;
+ AVDictionary **metadata = avpriv_frame_get_metadatap(main);
+
+ s->compute_mse(s, (const uint8_t **)main->data, main->linesize,
+ (const uint8_t **)ref->data, ref->linesize,
+ main->width, main->height, comp_mse);
+
+ for (j = 0; j < s->nb_components; j++)
+ mse += comp_mse[j];
+ mse /= s->nb_components;
+
+ s->min_mse = FFMIN(s->min_mse, mse);
+ s->max_mse = FFMAX(s->max_mse, mse);
+
+ s->mse += mse;
+ s->nb_frames++;
+
+ for (j = 0; j < s->nb_components; j++) {
+ c = s->is_rgb ? s->rgba_map[j] : j;
+ set_meta(metadata, "lavfi.psnr.mse.", s->comps[j], comp_mse[c]);
+ set_meta(metadata, "lavfi.psnr.mse_avg", 0, mse);
+ set_meta(metadata, "lavfi.psnr.psnr.", s->comps[j], get_psnr(comp_mse[c], 1, s->max[c]));
+ set_meta(metadata, "lavfi.psnr.psnr_avg", 0, get_psnr(mse, 1, s->average_max));
+ }
+
+ if (s->stats_file) {
+ fprintf(s->stats_file, "n:%"PRId64" mse_avg:%0.2f ", s->nb_frames, mse);
+ for (j = 0; j < s->nb_components; j++) {
+ c = s->is_rgb ? s->rgba_map[j] : j;
+ fprintf(s->stats_file, "mse_%c:%0.2f ", s->comps[j], comp_mse[c]);
+ }
+ for (j = 0; j < s->nb_components; j++) {
+ c = s->is_rgb ? s->rgba_map[j] : j;
+ fprintf(s->stats_file, "psnr_%c:%0.2f ", s->comps[j],
+ get_psnr(comp_mse[c], 1, s->max[c]));
+ }
+ fprintf(s->stats_file, "\n");
+ }
+
+ return main;
+}
+
+static av_cold int init(AVFilterContext *ctx)
+{
+ PSNRContext *s = ctx->priv;
+
+ s->min_mse = +INFINITY;
+ s->max_mse = -INFINITY;
+
+ if (s->stats_file_str) {
+ s->stats_file = fopen(s->stats_file_str, "w");
+ if (!s->stats_file) {
+ int err = AVERROR(errno);
+ char buf[128];
+ av_strerror(err, buf, sizeof(buf));
+ av_log(ctx, AV_LOG_ERROR, "Could not open stats file %s: %s\n",
+ s->stats_file_str, buf);
+ return err;
+ }
+ }
+
+ s->dinput.process = do_psnr;
+ return 0;
+}
+
+static int query_formats(AVFilterContext *ctx)
+{
+ static const enum PixelFormat pix_fmts[] = {
+ AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY16,
+#define PF_NOALPHA(suf) AV_PIX_FMT_YUV420##suf, AV_PIX_FMT_YUV422##suf, AV_PIX_FMT_YUV444##suf
+#define PF_ALPHA(suf) AV_PIX_FMT_YUVA420##suf, AV_PIX_FMT_YUVA422##suf, AV_PIX_FMT_YUVA444##suf
+#define PF(suf) PF_NOALPHA(suf), PF_ALPHA(suf)
+ PF(P), PF(P9), PF(P10), PF_NOALPHA(P12), PF_NOALPHA(P14), PF(P16),
+ AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
+ AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
+ AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
+ AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
+ AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
+ AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP16,
+ AV_PIX_FMT_NONE
+ };
+
+ ff_set_common_formats(ctx, ff_make_format_list(pix_fmts));
+ return 0;
+}
+
+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;
+ int j;
+
+ s->nb_components = desc->nb_components;
+ if (ctx->inputs[0]->w != ctx->inputs[1]->w ||
+ ctx->inputs[0]->h != ctx->inputs[1]->h) {
+ av_log(ctx, AV_LOG_ERROR, "Width and height of input videos must be same.\n");
+ return AVERROR(EINVAL);
+ }
+ if (ctx->inputs[0]->format != ctx->inputs[1]->format) {
+ av_log(ctx, AV_LOG_ERROR, "Inputs must be of same pixel format.\n");
+ return AVERROR(EINVAL);
+ }
+
+ switch (inlink->format) {
+ case AV_PIX_FMT_GRAY8:
+ case AV_PIX_FMT_GRAY16:
+ case AV_PIX_FMT_GBRP:
+ case AV_PIX_FMT_GBRP9:
+ case AV_PIX_FMT_GBRP10:
+ case AV_PIX_FMT_GBRP12:
+ case AV_PIX_FMT_GBRP14:
+ case AV_PIX_FMT_GBRP16:
+ case AV_PIX_FMT_GBRAP:
+ case AV_PIX_FMT_GBRAP16:
+ case AV_PIX_FMT_YUVJ411P:
+ case AV_PIX_FMT_YUVJ420P:
+ case AV_PIX_FMT_YUVJ422P:
+ case AV_PIX_FMT_YUVJ440P:
+ case AV_PIX_FMT_YUVJ444P:
+ s->max[0] = (1 << (desc->comp[0].depth_minus1 + 1)) - 1;
+ s->max[1] = (1 << (desc->comp[1].depth_minus1 + 1)) - 1;
+ s->max[2] = (1 << (desc->comp[2].depth_minus1 + 1)) - 1;
+ s->max[3] = (1 << (desc->comp[3].depth_minus1 + 1)) - 1;
+ break;
+ default:
+ s->max[0] = 235 * (1 << (desc->comp[0].depth_minus1 - 7));
+ s->max[1] = 240 * (1 << (desc->comp[1].depth_minus1 - 7));
+ s->max[2] = 240 * (1 << (desc->comp[2].depth_minus1 - 7));
+ s->max[3] = (1 << (desc->comp[3].depth_minus1 + 1)) - 1;
+ }
+
+ s->is_rgb = ff_fill_rgba_map(s->rgba_map, inlink->format) >= 0;
+ s->comps[0] = s->is_rgb ? 'r' : 'y' ;
+ s->comps[1] = s->is_rgb ? 'g' : 'u' ;
+ 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;
+
+ s->compute_mse = desc->comp[0].depth_minus1 > 7 ? compute_images_mse_16bit : compute_images_mse;
+
+ return 0;
+}
+
+static int config_output(AVFilterLink *outlink)
+{
+ AVFilterContext *ctx = outlink->src;
+ PSNRContext *s = ctx->priv;
+ AVFilterLink *mainlink = ctx->inputs[0];
+ int ret;
+
+ outlink->w = mainlink->w;
+ outlink->h = mainlink->h;
+ outlink->time_base = mainlink->time_base;
+ outlink->sample_aspect_ratio = mainlink->sample_aspect_ratio;
+ outlink->frame_rate = mainlink->frame_rate;
+ if ((ret = ff_dualinput_init(ctx, &s->dinput)) < 0)
+ return ret;
+
+ return 0;
+}
+
+static int filter_frame(AVFilterLink *inlink, AVFrame *inpicref)
+{
+ PSNRContext *s = inlink->dst->priv;
+ return ff_dualinput_filter_frame(&s->dinput, inlink, inpicref);
+}
+
+static int request_frame(AVFilterLink *outlink)
+{
+ PSNRContext *s = outlink->src->priv;
+ return ff_dualinput_request_frame(&s->dinput, outlink);
+}
+
+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",
+ 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));
+ }
+
+ ff_dualinput_uninit(&s->dinput);
+
+ if (s->stats_file)
+ fclose(s->stats_file);
+}
+
+static const AVFilterPad psnr_inputs[] = {
+ {
+ .name = "main",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .filter_frame = filter_frame,
+ },{
+ .name = "reference",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .filter_frame = filter_frame,
+ .config_props = config_input_ref,
+ },
+ { NULL }
+};
+
+static const AVFilterPad psnr_outputs[] = {
+ {
+ .name = "default",
+ .type = AVMEDIA_TYPE_VIDEO,
+ .config_props = config_output,
+ .request_frame = request_frame,
+ },
+ { NULL }
+};
+
+AVFilter ff_vf_psnr = {
+ .name = "psnr",
+ .description = NULL_IF_CONFIG_SMALL("Calculate the PSNR between two video streams."),
+ .init = init,
+ .uninit = uninit,
+ .query_formats = query_formats,
+ .priv_size = sizeof(PSNRContext),
+ .priv_class = &psnr_class,
+ .inputs = psnr_inputs,
+ .outputs = psnr_outputs,
+};
generated by cgit v1.2.3 (git 2.39.1) at 2024-07-09 21:10:28 +0000