| /* |
| * 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/avstring.h" |
| #include "libavutil/opt.h" |
| #include "libavutil/pixdesc.h" |
| #include "avfilter.h" |
| #include "drawutils.h" |
| #include "formats.h" |
| #include "framesync.h" |
| #include "internal.h" |
| #include "psnr.h" |
| #include "video.h" |
| |
| typedef struct PSNRContext { |
| const AVClass *class; |
| FFFrameSync fs; |
| double mse, min_mse, max_mse, mse_comp[4]; |
| uint64_t nb_frames; |
| FILE *stats_file; |
| char *stats_file_str; |
| int stats_version; |
| int stats_header_written; |
| int stats_add_max; |
| 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]; |
| double planeweight[4]; |
| PSNRDSPContext dsp; |
| } 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 }, |
| {"stats_version", "Set the format version for the stats file.", OFFSET(stats_version), AV_OPT_TYPE_INT, {.i64=1}, 1, 2, FLAGS }, |
| {"output_max", "Add raw stats (max values) to the output log.", OFFSET(stats_add_max), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS}, |
| { NULL } |
| }; |
| |
| FRAMESYNC_DEFINE_CLASS(psnr, PSNRContext, fs); |
| |
| static inline unsigned pow_2(unsigned base) |
| { |
| return base*base; |
| } |
| |
| static inline double get_psnr(double mse, uint64_t nb_frames, int max) |
| { |
| return 10.0 * log10(pow_2(max) / (mse / nb_frames)); |
| } |
| |
| static uint64_t sse_line_8bit(const uint8_t *main_line, const uint8_t *ref_line, int outw) |
| { |
| int j; |
| unsigned m2 = 0; |
| |
| for (j = 0; j < outw; j++) |
| m2 += pow_2(main_line[j] - ref_line[j]); |
| |
| return m2; |
| } |
| |
| static uint64_t sse_line_16bit(const uint8_t *_main_line, const uint8_t *_ref_line, int outw) |
| { |
| int j; |
| uint64_t m2 = 0; |
| const uint16_t *main_line = (const uint16_t *) _main_line; |
| const uint16_t *ref_line = (const uint16_t *) _ref_line; |
| |
| for (j = 0; j < outw; j++) |
| m2 += pow_2(main_line[j] - ref_line[j]); |
| |
| return m2; |
| } |
| |
| 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; |
| |
| 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++) { |
| m += s->dsp.sse_line(main_line, ref_line, outw); |
| 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 int do_psnr(FFFrameSync *fs) |
| { |
| AVFilterContext *ctx = fs->parent; |
| PSNRContext *s = ctx->priv; |
| AVFrame *master, *ref; |
| double comp_mse[4], mse = 0; |
| int ret, j, c; |
| AVDictionary **metadata; |
| |
| ret = ff_framesync_dualinput_get(fs, &master, &ref); |
| if (ret < 0) |
| return ret; |
| if (!ref) |
| return ff_filter_frame(ctx->outputs[0], master); |
| metadata = &master->metadata; |
| |
| compute_images_mse(s, (const uint8_t **)master->data, master->linesize, |
| (const uint8_t **)ref->data, ref->linesize, |
| master->width, master->height, comp_mse); |
| |
| for (j = 0; j < s->nb_components; j++) |
| 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++) { |
| 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.psnr.", s->comps[j], get_psnr(comp_mse[c], 1, s->max[c])); |
| } |
| set_meta(metadata, "lavfi.psnr.mse_avg", 0, mse); |
| set_meta(metadata, "lavfi.psnr.psnr_avg", 0, get_psnr(mse, 1, s->average_max)); |
| |
| if (s->stats_file) { |
| if (s->stats_version == 2 && !s->stats_header_written) { |
| fprintf(s->stats_file, "psnr_log_version:2 fields:n"); |
| fprintf(s->stats_file, ",mse_avg"); |
| for (j = 0; j < s->nb_components; j++) { |
| fprintf(s->stats_file, ",mse_%c", s->comps[j]); |
| } |
| fprintf(s->stats_file, ",psnr_avg"); |
| for (j = 0; j < s->nb_components; j++) { |
| fprintf(s->stats_file, ",psnr_%c", s->comps[j]); |
| } |
| if (s->stats_add_max) { |
| fprintf(s->stats_file, ",max_avg"); |
| for (j = 0; j < s->nb_components; j++) { |
| fprintf(s->stats_file, ",max_%c", s->comps[j]); |
| } |
| } |
| fprintf(s->stats_file, "\n"); |
| s->stats_header_written = 1; |
| } |
| 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]); |
| } |
| fprintf(s->stats_file, "psnr_avg:%0.2f ", get_psnr(mse, 1, s->average_max)); |
| 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])); |
| } |
| if (s->stats_version == 2 && s->stats_add_max) { |
| fprintf(s->stats_file, "max_avg:%d ", s->average_max); |
| for (j = 0; j < s->nb_components; j++) { |
| c = s->is_rgb ? s->rgba_map[j] : j; |
| fprintf(s->stats_file, "max_%c:%d ", s->comps[j], s->max[c]); |
| } |
| } |
| fprintf(s->stats_file, "\n"); |
| } |
| |
| return ff_filter_frame(ctx->outputs[0], master); |
| } |
| |
| static av_cold int init(AVFilterContext *ctx) |
| { |
| PSNRContext *s = ctx->priv; |
| |
| s->min_mse = +INFINITY; |
| s->max_mse = -INFINITY; |
| |
| if (s->stats_file_str) { |
| if (s->stats_version < 2 && s->stats_add_max) { |
| av_log(ctx, AV_LOG_ERROR, |
| "stats_add_max was specified but stats_version < 2.\n" ); |
| return AVERROR(EINVAL); |
| } |
| if (!strcmp(s->stats_file_str, "-")) { |
| s->stats_file = stdout; |
| } else { |
| 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->fs.on_event = do_psnr; |
| return 0; |
| } |
| |
| static int query_formats(AVFilterContext *ctx) |
| { |
| static const enum AVPixelFormat pix_fmts[] = { |
| AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, 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_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16, |
| AV_PIX_FMT_NONE |
| }; |
| |
| AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts); |
| if (!fmts_list) |
| return AVERROR(ENOMEM); |
| return ff_set_common_formats(ctx, fmts_list); |
| } |
| |
| 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; |
| double average_max; |
| unsigned sum; |
| 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); |
| } |
| |
| s->max[0] = (1 << desc->comp[0].depth) - 1; |
| s->max[1] = (1 << desc->comp[1].depth) - 1; |
| s->max[2] = (1 << desc->comp[2].depth) - 1; |
| s->max[3] = (1 << desc->comp[3].depth) - 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'; |
| |
| s->planeheight[1] = s->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h); |
| s->planeheight[0] = s->planeheight[3] = inlink->h; |
| s->planewidth[1] = s->planewidth[2] = AV_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]; |
| average_max = 0; |
| for (j = 0; j < s->nb_components; j++) { |
| s->planeweight[j] = (double) s->planeheight[j] * s->planewidth[j] / sum; |
| average_max += s->max[j] * s->planeweight[j]; |
| } |
| s->average_max = lrint(average_max); |
| |
| s->dsp.sse_line = desc->comp[0].depth > 8 ? sse_line_16bit : sse_line_8bit; |
| if (ARCH_X86) |
| ff_psnr_init_x86(&s->dsp, desc->comp[0].depth); |
| |
| return 0; |
| } |
| |
| static int config_output(AVFilterLink *outlink) |
| { |
| AVFilterContext *ctx = outlink->src; |
| PSNRContext *s = ctx->priv; |
| AVFilterLink *mainlink = ctx->inputs[0]; |
| int ret; |
| |
| ret = ff_framesync_init_dualinput(&s->fs, ctx); |
| if (ret < 0) |
| return 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_framesync_configure(&s->fs)) < 0) |
| return ret; |
| |
| outlink->time_base = s->fs.time_base; |
| |
| if (av_cmp_q(mainlink->time_base, outlink->time_base) || |
| av_cmp_q(ctx->inputs[1]->time_base, outlink->time_base)) |
| av_log(ctx, AV_LOG_WARNING, "not matching timebases found between first input: %d/%d and second input %d/%d, results may be incorrect!\n", |
| mainlink->time_base.num, mainlink->time_base.den, |
| ctx->inputs[1]->time_base.num, ctx->inputs[1]->time_base.den); |
| |
| return 0; |
| } |
| |
| static int activate(AVFilterContext *ctx) |
| { |
| PSNRContext *s = ctx->priv; |
| return ff_framesync_activate(&s->fs); |
| } |
| |
| static av_cold void uninit(AVFilterContext *ctx) |
| { |
| PSNRContext *s = ctx->priv; |
| |
| if (s->nb_frames > 0) { |
| int j; |
| char buf[256]; |
| |
| buf[0] = 0; |
| for (j = 0; j < s->nb_components; j++) { |
| int c = s->is_rgb ? s->rgba_map[j] : j; |
| av_strlcatf(buf, sizeof(buf), " %c:%f", s->comps[j], |
| get_psnr(s->mse_comp[c], s->nb_frames, s->max[c])); |
| } |
| av_log(ctx, AV_LOG_INFO, "PSNR%s average:%f min:%f max:%f\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)); |
| } |
| |
| ff_framesync_uninit(&s->fs); |
| |
| if (s->stats_file && s->stats_file != stdout) |
| fclose(s->stats_file); |
| } |
| |
| static const AVFilterPad psnr_inputs[] = { |
| { |
| .name = "main", |
| .type = AVMEDIA_TYPE_VIDEO, |
| },{ |
| .name = "reference", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .config_props = config_input_ref, |
| }, |
| { NULL } |
| }; |
| |
| static const AVFilterPad psnr_outputs[] = { |
| { |
| .name = "default", |
| .type = AVMEDIA_TYPE_VIDEO, |
| .config_props = config_output, |
| }, |
| { NULL } |
| }; |
| |
| AVFilter ff_vf_psnr = { |
| .name = "psnr", |
| .description = NULL_IF_CONFIG_SMALL("Calculate the PSNR between two video streams."), |
| .preinit = psnr_framesync_preinit, |
| .init = init, |
| .uninit = uninit, |
| .query_formats = query_formats, |
| .activate = activate, |
| .priv_size = sizeof(PSNRContext), |
| .priv_class = &psnr_class, |
| .inputs = psnr_inputs, |
| .outputs = psnr_outputs, |
| }; |