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https://github.com/FFmpeg/FFmpeg.git
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a53545a374
The SSIM filter uses the pixel values without considering the color ranges. This is incorrect. Patch adds a warning so at least the user knows it. Let's see an example. (1) Let's get FR and LR versions of the same image. ``` $ ffmpeg -y -i /tmp/lena.490x490.ppm -vf scale="out_range=full" -pix_fmt yuv420p /tmp/lena.full.y4m $ xxd /tmp/lena.full.y4m |head 00000000: 5955 5634 4d50 4547 3220 5734 3930 2048 YUV4MPEG2 W490 H 00000010: 3439 3020 4632 353a 3120 4970 2041 303a 490 F25:1 Ip A0: 00000020: 3020 4334 3230 6a70 6567 2058 5953 4353 0 C420jpeg XYSCS 00000030: 533d 3432 304a 5045 4720 5843 4f4c 4f52 S=420JPEG XCOLOR 00000040: 5241 4e47 453d 4655 4c4c 0a46 5241 4d45 RANGE=FULL.FRAME 00000050: 0a72 7271 7070 706f 6f6e 6d6d 6c6d 6d6d .rrqpppoonmmlmmm 00000060: 6c6e 6e6d 6d6e 6e6e 6d6c 6d6d 6d6d 6d6d lnnmmnnnmlmmmmmm 00000070: 6d6e 6d6b 6c6d 6e6e 6d6c 6d6d 6e6e 6f6f mnmklmnnmlmmnnoo 00000080: 6f6f 6e6e 6e6e 6f70 7172 7375 7676 7370 oonnnnopqrsuvvsp 00000090: 6d69 6662 5e59 534d 4845 3d35 302e 2d2c mifb^YSMHE=50.-, ``` ``` $ ffmpeg -y -i /tmp/lena.490x490.ppm -vf scale="out_range=limited" -pix_fmt yuv420p /tmp/lena.limited.y4m $ xxd /tmp/lena.limited.y4m | head 00000000: 5955 5634 4d50 4547 3220 5734 3930 2048 YUV4MPEG2 W490 H 00000010: 3439 3020 4632 353a 3120 4970 2041 303a 490 F25:1 Ip A0: 00000020: 3020 4334 3230 6a70 6567 2058 5953 4353 0 C420jpeg XYSCS 00000030: 533d 3432 304a 5045 4720 5843 4f4c 4f52 S=420JPEG XCOLOR 00000040: 5241 4e47 453d 4c49 4d49 5445 440a 4652 RANGE=LIMITED.FR 00000050: 414d 450a 7272 7170 7070 6f6f 6e6e 6e6d AME.rrqpppoonnnm 00000060: 6e6e 6e6d 6f6e 6e6e 6e6e 6e6e 6d6e 6e6e nnnmonnnnnnnmnnn 00000070: 6e6e 6e6e 6f6e 6c6d 6e6f 6e6e 6d6e 6e6f nnnnonlmnonnmnno 00000080: 6f6f 6f6f 6f6f 6f6f 6f6f 7071 7273 7576 oooooooooopqrsuv 00000090: 7673 706e 6a68 6461 5c57 524e 4b44 3d39 vspnjhda\WRNKD=9 ``` Note that the 2x images are the same. Only difference is the range, and the precision issues related to range conversion. (2) Let's calculate the SSIM score: ``` $ ./ffmpeg -filter_threads 1 -filter_complex_threads 1 -i /tmp/lena.full.y4m -i /tmp/lena.limited.y4m -lavfi "ssim" -f null - ... [Parsed_ssim_0 @ 0x360ab00] SSIM Y:0.942347 (12.391801) U:0.995808 (23.776062) V:0.996104 (24.093747) All:0.960217 (14.003012) ``` As we are comparing an image with itself, we expect "Y: 1" as the luma SSIM. Issue here is that the SSIM filter just uses the pixel values, ignoring the color ranges. Proposed solution is to add a warning. ``` $ ./ffmpeg -filter_threads 1 -filter_complex_threads 1 -i /tmp/foo.full.y4m -i /tmp/foo.limited.y4m -lavfi "ssim" -f null - ... [Parsed_ssim_0 @ 0x3766280] master and reference frames use different color ranges (pc != tv) ... [Parsed_ssim_0 @ 0x3766280] SSIM Y:0.000000 (0.000000) U:0.000000 (0.000000) V:0.000000 (0.000000) All:0.000000 (0.000000) ``` Tested: Ran fate. ``` $ make fate -j ... TEST seek-lavf-ppmpipe TEST seek-lavf-pgmpipe TEST seek-lavf-mxf_opatom ```
606 lines
19 KiB
C
606 lines
19 KiB
C
/*
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* Copyright (c) 2003-2013 Loren Merritt
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* Copyright (c) 2015 Paul B Mahol
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*
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* This file is part of FFmpeg.
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*
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* FFmpeg is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* FFmpeg is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with FFmpeg; if not, write to the Free Software
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* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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/* Computes the Structural Similarity Metric between two video streams.
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* original algorithm:
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* Z. Wang, A. C. Bovik, H. R. Sheikh and E. P. Simoncelli,
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* "Image quality assessment: From error visibility to structural similarity,"
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* IEEE Transactions on Image Processing, vol. 13, no. 4, pp. 600-612, Apr. 2004.
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*
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* To improve speed, this implementation uses the standard approximation of
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* overlapped 8x8 block sums, rather than the original gaussian weights.
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*/
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/*
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* @file
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* Calculate the SSIM between two input videos.
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*/
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#include "libavutil/avstring.h"
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#include "libavutil/file_open.h"
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#include "libavutil/opt.h"
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#include "libavutil/pixdesc.h"
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#include "avfilter.h"
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#include "drawutils.h"
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#include "framesync.h"
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#include "internal.h"
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#include "ssim.h"
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typedef struct SSIMContext {
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const AVClass *class;
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FFFrameSync fs;
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FILE *stats_file;
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char *stats_file_str;
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int nb_components;
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int nb_threads;
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int max;
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uint64_t nb_frames;
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double ssim[4], ssim_total;
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char comps[4];
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double coefs[4];
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uint8_t rgba_map[4];
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int planewidth[4];
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int planeheight[4];
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int **temp;
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int is_rgb;
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double **score;
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int (*ssim_plane)(AVFilterContext *ctx, void *arg,
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int jobnr, int nb_jobs);
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SSIMDSPContext dsp;
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} SSIMContext;
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#define OFFSET(x) offsetof(SSIMContext, x)
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#define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
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static const AVOption ssim_options[] = {
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{"stats_file", "Set file where to store per-frame difference information", OFFSET(stats_file_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
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{"f", "Set file where to store per-frame difference information", OFFSET(stats_file_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
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{ NULL }
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};
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FRAMESYNC_DEFINE_CLASS(ssim, SSIMContext, fs);
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static void set_meta(AVDictionary **metadata, const char *key, char comp, float d)
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{
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char value[128];
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snprintf(value, sizeof(value), "%f", d);
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if (comp) {
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char key2[128];
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snprintf(key2, sizeof(key2), "%s%c", key, comp);
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av_dict_set(metadata, key2, value, 0);
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} else {
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av_dict_set(metadata, key, value, 0);
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}
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}
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static void ssim_4x4xn_16bit(const uint8_t *main8, ptrdiff_t main_stride,
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const uint8_t *ref8, ptrdiff_t ref_stride,
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int64_t (*sums)[4], int width)
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{
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const uint16_t *main16 = (const uint16_t *)main8;
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const uint16_t *ref16 = (const uint16_t *)ref8;
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int x, y, z;
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main_stride >>= 1;
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ref_stride >>= 1;
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for (z = 0; z < width; z++) {
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uint64_t s1 = 0, s2 = 0, ss = 0, s12 = 0;
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for (y = 0; y < 4; y++) {
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for (x = 0; x < 4; x++) {
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unsigned a = main16[x + y * main_stride];
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unsigned b = ref16[x + y * ref_stride];
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s1 += a;
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s2 += b;
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ss += a*a;
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ss += b*b;
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s12 += a*b;
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}
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}
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sums[z][0] = s1;
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sums[z][1] = s2;
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sums[z][2] = ss;
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sums[z][3] = s12;
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main16 += 4;
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ref16 += 4;
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}
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}
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static void ssim_4x4xn_8bit(const uint8_t *main, ptrdiff_t main_stride,
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const uint8_t *ref, ptrdiff_t ref_stride,
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int (*sums)[4], int width)
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{
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int x, y, z;
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for (z = 0; z < width; z++) {
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uint32_t s1 = 0, s2 = 0, ss = 0, s12 = 0;
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for (y = 0; y < 4; y++) {
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for (x = 0; x < 4; x++) {
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int a = main[x + y * main_stride];
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int b = ref[x + y * ref_stride];
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s1 += a;
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s2 += b;
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ss += a*a;
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ss += b*b;
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s12 += a*b;
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}
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}
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sums[z][0] = s1;
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sums[z][1] = s2;
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sums[z][2] = ss;
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sums[z][3] = s12;
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main += 4;
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ref += 4;
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}
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}
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static float ssim_end1x(int64_t s1, int64_t s2, int64_t ss, int64_t s12, int max)
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{
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int64_t ssim_c1 = (int64_t)(.01*.01*max*max*64 + .5);
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int64_t ssim_c2 = (int64_t)(.03*.03*max*max*64*63 + .5);
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int64_t fs1 = s1;
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int64_t fs2 = s2;
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int64_t fss = ss;
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int64_t fs12 = s12;
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int64_t vars = fss * 64 - fs1 * fs1 - fs2 * fs2;
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int64_t covar = fs12 * 64 - fs1 * fs2;
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return (float)(2 * fs1 * fs2 + ssim_c1) * (float)(2 * covar + ssim_c2)
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/ ((float)(fs1 * fs1 + fs2 * fs2 + ssim_c1) * (float)(vars + ssim_c2));
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}
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static float ssim_end1(int s1, int s2, int ss, int s12)
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{
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static const int ssim_c1 = (int)(.01*.01*255*255*64 + .5);
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static const int ssim_c2 = (int)(.03*.03*255*255*64*63 + .5);
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int fs1 = s1;
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int fs2 = s2;
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int fss = ss;
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int fs12 = s12;
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int vars = fss * 64 - fs1 * fs1 - fs2 * fs2;
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int covar = fs12 * 64 - fs1 * fs2;
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return (float)(2 * fs1 * fs2 + ssim_c1) * (float)(2 * covar + ssim_c2)
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/ ((float)(fs1 * fs1 + fs2 * fs2 + ssim_c1) * (float)(vars + ssim_c2));
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}
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static float ssim_endn_16bit(const int64_t (*sum0)[4], const int64_t (*sum1)[4], int width, int max)
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{
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float ssim = 0.0;
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int i;
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for (i = 0; i < width; i++)
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ssim += ssim_end1x(sum0[i][0] + sum0[i + 1][0] + sum1[i][0] + sum1[i + 1][0],
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sum0[i][1] + sum0[i + 1][1] + sum1[i][1] + sum1[i + 1][1],
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sum0[i][2] + sum0[i + 1][2] + sum1[i][2] + sum1[i + 1][2],
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sum0[i][3] + sum0[i + 1][3] + sum1[i][3] + sum1[i + 1][3],
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max);
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return ssim;
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}
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static double ssim_endn_8bit(const int (*sum0)[4], const int (*sum1)[4], int width)
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{
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double ssim = 0.0;
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int i;
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for (i = 0; i < width; i++)
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ssim += ssim_end1(sum0[i][0] + sum0[i + 1][0] + sum1[i][0] + sum1[i + 1][0],
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sum0[i][1] + sum0[i + 1][1] + sum1[i][1] + sum1[i + 1][1],
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sum0[i][2] + sum0[i + 1][2] + sum1[i][2] + sum1[i + 1][2],
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sum0[i][3] + sum0[i + 1][3] + sum1[i][3] + sum1[i + 1][3]);
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return ssim;
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}
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#define SUM_LEN(w) (((w) >> 2) + 3)
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typedef struct ThreadData {
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const uint8_t *main_data[4];
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const uint8_t *ref_data[4];
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int main_linesize[4];
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int ref_linesize[4];
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int planewidth[4];
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int planeheight[4];
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double **score;
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int **temp;
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int nb_components;
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int max;
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SSIMDSPContext *dsp;
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} ThreadData;
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static int ssim_plane_16bit(AVFilterContext *ctx, void *arg,
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int jobnr, int nb_jobs)
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{
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ThreadData *td = arg;
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double *score = td->score[jobnr];
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void *temp = td->temp[jobnr];
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const int max = td->max;
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for (int c = 0; c < td->nb_components; c++) {
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const uint8_t *main_data = td->main_data[c];
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const uint8_t *ref_data = td->ref_data[c];
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const int main_stride = td->main_linesize[c];
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const int ref_stride = td->ref_linesize[c];
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int width = td->planewidth[c];
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int height = td->planeheight[c];
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const int slice_start = ((height >> 2) * jobnr) / nb_jobs;
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const int slice_end = ((height >> 2) * (jobnr+1)) / nb_jobs;
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const int ystart = FFMAX(1, slice_start);
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int z = ystart - 1;
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double ssim = 0.0;
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int64_t (*sum0)[4] = temp;
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int64_t (*sum1)[4] = sum0 + SUM_LEN(width);
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width >>= 2;
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height >>= 2;
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for (int y = ystart; y < slice_end; y++) {
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for (; z <= y; z++) {
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FFSWAP(void*, sum0, sum1);
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ssim_4x4xn_16bit(&main_data[4 * z * main_stride], main_stride,
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&ref_data[4 * z * ref_stride], ref_stride,
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sum0, width);
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}
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ssim += ssim_endn_16bit((const int64_t (*)[4])sum0, (const int64_t (*)[4])sum1, width - 1, max);
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}
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score[c] = ssim;
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}
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return 0;
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}
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static int ssim_plane(AVFilterContext *ctx, void *arg,
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int jobnr, int nb_jobs)
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{
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ThreadData *td = arg;
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double *score = td->score[jobnr];
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void *temp = td->temp[jobnr];
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SSIMDSPContext *dsp = td->dsp;
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for (int c = 0; c < td->nb_components; c++) {
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const uint8_t *main_data = td->main_data[c];
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const uint8_t *ref_data = td->ref_data[c];
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const int main_stride = td->main_linesize[c];
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const int ref_stride = td->ref_linesize[c];
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int width = td->planewidth[c];
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int height = td->planeheight[c];
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const int slice_start = ((height >> 2) * jobnr) / nb_jobs;
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const int slice_end = ((height >> 2) * (jobnr+1)) / nb_jobs;
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const int ystart = FFMAX(1, slice_start);
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int z = ystart - 1;
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double ssim = 0.0;
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int (*sum0)[4] = temp;
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int (*sum1)[4] = sum0 + SUM_LEN(width);
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width >>= 2;
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height >>= 2;
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for (int y = ystart; y < slice_end; y++) {
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for (; z <= y; z++) {
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FFSWAP(void*, sum0, sum1);
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dsp->ssim_4x4_line(&main_data[4 * z * main_stride], main_stride,
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&ref_data[4 * z * ref_stride], ref_stride,
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sum0, width);
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}
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ssim += dsp->ssim_end_line((const int (*)[4])sum0, (const int (*)[4])sum1, width - 1);
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}
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score[c] = ssim;
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}
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return 0;
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}
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static double ssim_db(double ssim, double weight)
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{
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return (fabs(weight - ssim) > 1e-9) ? 10.0 * log10(weight / (weight - ssim)) : INFINITY;
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}
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static int do_ssim(FFFrameSync *fs)
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{
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AVFilterContext *ctx = fs->parent;
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SSIMContext *s = ctx->priv;
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AVFrame *master, *ref;
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AVDictionary **metadata;
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double c[4] = {0}, ssimv = 0.0;
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ThreadData td;
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int ret, i;
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ret = ff_framesync_dualinput_get(fs, &master, &ref);
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if (ret < 0)
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return ret;
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if (ctx->is_disabled || !ref)
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return ff_filter_frame(ctx->outputs[0], master);
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metadata = &master->metadata;
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s->nb_frames++;
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td.nb_components = s->nb_components;
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td.dsp = &s->dsp;
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td.score = s->score;
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td.temp = s->temp;
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td.max = s->max;
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for (int n = 0; n < s->nb_components; n++) {
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td.main_data[n] = master->data[n];
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td.ref_data[n] = ref->data[n];
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td.main_linesize[n] = master->linesize[n];
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td.ref_linesize[n] = ref->linesize[n];
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td.planewidth[n] = s->planewidth[n];
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td.planeheight[n] = s->planeheight[n];
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}
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if (master->color_range != ref->color_range) {
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av_log(ctx, AV_LOG_WARNING, "master and reference "
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"frames use different color ranges (%s != %s)\n",
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av_color_range_name(master->color_range),
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av_color_range_name(ref->color_range));
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}
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ff_filter_execute(ctx, s->ssim_plane, &td, NULL,
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FFMIN((s->planeheight[1] + 3) >> 2, s->nb_threads));
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for (i = 0; i < s->nb_components; i++) {
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for (int j = 0; j < s->nb_threads; j++)
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c[i] += s->score[j][i];
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c[i] = c[i] / (((s->planewidth[i] >> 2) - 1) * ((s->planeheight[i] >> 2) - 1));
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}
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for (i = 0; i < s->nb_components; i++) {
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ssimv += s->coefs[i] * c[i];
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s->ssim[i] += c[i];
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}
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for (i = 0; i < s->nb_components; i++) {
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int cidx = s->is_rgb ? s->rgba_map[i] : i;
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set_meta(metadata, "lavfi.ssim.", s->comps[i], c[cidx]);
|
|
}
|
|
s->ssim_total += ssimv;
|
|
|
|
set_meta(metadata, "lavfi.ssim.All", 0, ssimv);
|
|
set_meta(metadata, "lavfi.ssim.dB", 0, ssim_db(ssimv, 1.0));
|
|
|
|
if (s->stats_file) {
|
|
fprintf(s->stats_file, "n:%"PRId64" ", s->nb_frames);
|
|
|
|
for (i = 0; i < s->nb_components; i++) {
|
|
int cidx = s->is_rgb ? s->rgba_map[i] : i;
|
|
fprintf(s->stats_file, "%c:%f ", s->comps[i], c[cidx]);
|
|
}
|
|
|
|
fprintf(s->stats_file, "All:%f (%f)\n", ssimv, ssim_db(ssimv, 1.0));
|
|
}
|
|
|
|
return ff_filter_frame(ctx->outputs[0], master);
|
|
}
|
|
|
|
static av_cold int init(AVFilterContext *ctx)
|
|
{
|
|
SSIMContext *s = ctx->priv;
|
|
|
|
if (s->stats_file_str) {
|
|
if (!strcmp(s->stats_file_str, "-")) {
|
|
s->stats_file = stdout;
|
|
} else {
|
|
s->stats_file = avpriv_fopen_utf8(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_ssim;
|
|
return 0;
|
|
}
|
|
|
|
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,
|
|
AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P,
|
|
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,
|
|
#define PF(suf) AV_PIX_FMT_YUV420##suf, AV_PIX_FMT_YUV422##suf, AV_PIX_FMT_YUV444##suf, AV_PIX_FMT_GBR##suf
|
|
PF(P9), PF(P10), PF(P12), PF(P14), PF(P16),
|
|
AV_PIX_FMT_NONE
|
|
};
|
|
|
|
static int config_input_ref(AVFilterLink *inlink)
|
|
{
|
|
const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
|
|
AVFilterContext *ctx = inlink->dst;
|
|
SSIMContext *s = ctx->priv;
|
|
int sum = 0, i;
|
|
|
|
s->nb_threads = ff_filter_get_nb_threads(ctx);
|
|
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);
|
|
}
|
|
|
|
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;
|
|
for (i = 0; i < s->nb_components; i++)
|
|
sum += s->planeheight[i] * s->planewidth[i];
|
|
for (i = 0; i < s->nb_components; i++)
|
|
s->coefs[i] = (double) s->planeheight[i] * s->planewidth[i] / sum;
|
|
|
|
s->temp = av_calloc(s->nb_threads, sizeof(*s->temp));
|
|
if (!s->temp)
|
|
return AVERROR(ENOMEM);
|
|
|
|
for (int t = 0; t < s->nb_threads; t++) {
|
|
s->temp[t] = av_calloc(2 * SUM_LEN(inlink->w), (desc->comp[0].depth > 8) ? sizeof(int64_t[4]) : sizeof(int[4]));
|
|
if (!s->temp[t])
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
s->max = (1 << desc->comp[0].depth) - 1;
|
|
|
|
s->ssim_plane = desc->comp[0].depth > 8 ? ssim_plane_16bit : ssim_plane;
|
|
s->dsp.ssim_4x4_line = ssim_4x4xn_8bit;
|
|
s->dsp.ssim_end_line = ssim_endn_8bit;
|
|
#if ARCH_X86
|
|
ff_ssim_init_x86(&s->dsp);
|
|
#endif
|
|
|
|
s->score = av_calloc(s->nb_threads, sizeof(*s->score));
|
|
if (!s->score)
|
|
return AVERROR(ENOMEM);
|
|
|
|
for (int t = 0; t < s->nb_threads; t++) {
|
|
s->score[t] = av_calloc(s->nb_components, sizeof(*s->score[0]));
|
|
if (!s->score[t])
|
|
return AVERROR(ENOMEM);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int config_output(AVFilterLink *outlink)
|
|
{
|
|
AVFilterContext *ctx = outlink->src;
|
|
SSIMContext *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)
|
|
{
|
|
SSIMContext *s = ctx->priv;
|
|
return ff_framesync_activate(&s->fs);
|
|
}
|
|
|
|
static av_cold void uninit(AVFilterContext *ctx)
|
|
{
|
|
SSIMContext *s = ctx->priv;
|
|
|
|
if (s->nb_frames > 0) {
|
|
char buf[256];
|
|
int i;
|
|
buf[0] = 0;
|
|
for (i = 0; i < s->nb_components; i++) {
|
|
int c = s->is_rgb ? s->rgba_map[i] : i;
|
|
av_strlcatf(buf, sizeof(buf), " %c:%f (%f)", s->comps[i], s->ssim[c] / s->nb_frames,
|
|
ssim_db(s->ssim[c], s->nb_frames));
|
|
}
|
|
av_log(ctx, AV_LOG_INFO, "SSIM%s All:%f (%f)\n", buf,
|
|
s->ssim_total / s->nb_frames, ssim_db(s->ssim_total, s->nb_frames));
|
|
}
|
|
|
|
ff_framesync_uninit(&s->fs);
|
|
|
|
if (s->stats_file && s->stats_file != stdout)
|
|
fclose(s->stats_file);
|
|
|
|
for (int t = 0; t < s->nb_threads && s->score; t++)
|
|
av_freep(&s->score[t]);
|
|
av_freep(&s->score);
|
|
|
|
for (int t = 0; t < s->nb_threads && s->temp; t++)
|
|
av_freep(&s->temp[t]);
|
|
av_freep(&s->temp);
|
|
}
|
|
|
|
static const AVFilterPad ssim_inputs[] = {
|
|
{
|
|
.name = "main",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
},{
|
|
.name = "reference",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.config_props = config_input_ref,
|
|
},
|
|
};
|
|
|
|
static const AVFilterPad ssim_outputs[] = {
|
|
{
|
|
.name = "default",
|
|
.type = AVMEDIA_TYPE_VIDEO,
|
|
.config_props = config_output,
|
|
},
|
|
};
|
|
|
|
const AVFilter ff_vf_ssim = {
|
|
.name = "ssim",
|
|
.description = NULL_IF_CONFIG_SMALL("Calculate the SSIM between two video streams."),
|
|
.preinit = ssim_framesync_preinit,
|
|
.init = init,
|
|
.uninit = uninit,
|
|
.activate = activate,
|
|
.priv_size = sizeof(SSIMContext),
|
|
.priv_class = &ssim_class,
|
|
FILTER_INPUTS(ssim_inputs),
|
|
FILTER_OUTPUTS(ssim_outputs),
|
|
FILTER_PIXFMTS_ARRAY(pix_fmts),
|
|
.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL |
|
|
AVFILTER_FLAG_SLICE_THREADS |
|
|
AVFILTER_FLAG_METADATA_ONLY,
|
|
};
|