diff options
Diffstat (limited to 'libavfilter/vf_psnr.c')
-rw-r--r-- | libavfilter/vf_psnr.c | 386 |
1 files changed, 386 insertions, 0 deletions
diff --git a/libavfilter/vf_psnr.c b/libavfilter/vf_psnr.c new file mode 100644 index 0000000..082612a --- /dev/null +++ b/libavfilter/vf_psnr.c @@ -0,0 +1,386 @@ +/* + * 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, +}; |