FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavfilter/vf_xpsnr.c
Date: 2024-10-27 21:33:06
Exec Total Coverage
Lines: 278 370 75.1%
Functions: 12 16 75.0%
Branches: 169 264 64.0%
Line Branch Exec Source
1 /*
2 * Copyright (c) 2024 Christian R. Helmrich
3 * Copyright (c) 2024 Christian Lehmann
4 * Copyright (c) 2024 Christian Stoffers
5 *
6 * This file is part of FFmpeg.
7 *
8 * FFmpeg is free software; you can redistribute it and/or
9 * modify it under the terms of the GNU Lesser General Public
10 * License as published by the Free Software Foundation; either
11 * version 2.1 of the License, or (at your option) any later version.
12 *
13 * FFmpeg is distributed in the hope that it will be useful,
14 * but WITHOUT ANY WARRANTY; without even the implied warranty of
15 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
16 * Lesser General Public License for more details.
17 *
18 * You should have received a copy of the GNU Lesser General Public
19 * License along with FFmpeg; if not, write to the Free Software
20 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
21 */
22
23 /**
24 * @file
25 * Calculate the extended perceptually weighted PSNR (XPSNR) between two input videos.
26 *
27 * Authors: Christian Helmrich, Lehmann, and Stoffers, Fraunhofer HHI, Berlin, Germany
28 */
29
30 #include "libavutil/avstring.h"
31 #include "libavutil/file_open.h"
32 #include "libavutil/mem.h"
33 #include "libavutil/opt.h"
34 #include "libavutil/pixdesc.h"
35 #include "avfilter.h"
36 #include "drawutils.h"
37 #include "filters.h"
38 #include "framesync.h"
39 #include "psnr.h"
40 #include "xpsnr.h"
41
42 /* XPSNR structure definition */
43
44 typedef struct XPSNRContext {
45 /* required basic variables */
46 const AVClass *class;
47 int bpp; /* unpacked */
48 int depth; /* packed */
49 char comps[4];
50 int num_comps;
51 uint64_t num_frames_64;
52 unsigned frame_rate;
53 FFFrameSync fs;
54 int line_sizes[4];
55 int plane_height[4];
56 int plane_width[4];
57 uint8_t rgba_map[4];
58 FILE *stats_file;
59 char *stats_file_str;
60 /* XPSNR specific variables */
61 double *sse_luma;
62 double *weights;
63 AVBufferRef *buf_org [3];
64 AVBufferRef *buf_org_m1[3];
65 AVBufferRef *buf_org_m2[3];
66 AVBufferRef *buf_rec [3];
67 uint64_t max_error_64;
68 double sum_wdist [3];
69 double sum_xpsnr [3];
70 int and_is_inf[3];
71 int is_rgb;
72 XPSNRDSPContext dsp;
73 PSNRDSPContext pdsp;
74 } XPSNRContext;
75
76 /* required macro definitions */
77
78 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM | AV_OPT_FLAG_VIDEO_PARAM
79 #define OFFSET(x) offsetof(XPSNRContext, x)
80 #define XPSNR_GAMMA 2
81
82 static const AVOption xpsnr_options[] = {
83 {"stats_file", "Set file where to store per-frame XPSNR information", OFFSET(stats_file_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS},
84 {"f", "Set file where to store per-frame XPSNR information", OFFSET(stats_file_str), AV_OPT_TYPE_STRING, {.str = NULL}, 0, 0, FLAGS},
85 { NULL }
86 };
87
88
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 8 FRAMESYNC_DEFINE_CLASS(xpsnr, XPSNRContext, fs);
89
90 /* XPSNR function definitions */
91
92 ✗ static uint64_t highds(const int x_act, const int y_act, const int w_act, const int h_act, const int16_t *o_m0, const int o)
93 {
94 ✗ uint64_t sa_act = 0;
95
96 ✗ for (int y = y_act; y < h_act; y += 2) {
97 ✗ for (int x = x_act; x < w_act; x += 2) {
98 ✗ const int f = 12 * ((int)o_m0[ y *o + x ] + (int)o_m0[ y *o + x+1] + (int)o_m0[(y+1)*o + x ] + (int)o_m0[(y+1)*o + x+1])
99 ✗ - 3 * ((int)o_m0[(y-1)*o + x ] + (int)o_m0[(y-1)*o + x+1] + (int)o_m0[(y+2)*o + x ] + (int)o_m0[(y+2)*o + x+1])
100 ✗ - 3 * ((int)o_m0[ y *o + x-1] + (int)o_m0[ y *o + x+2] + (int)o_m0[(y+1)*o + x-1] + (int)o_m0[(y+1)*o + x+2])
101 ✗ - 2 * ((int)o_m0[(y-1)*o + x-1] + (int)o_m0[(y-1)*o + x+2] + (int)o_m0[(y+2)*o + x-1] + (int)o_m0[(y+2)*o + x+2])
102 ✗ - ((int)o_m0[(y-2)*o + x-1] + (int)o_m0[(y-2)*o + x ] + (int)o_m0[(y-2)*o + x+1] + (int)o_m0[(y-2)*o + x+2]
103 ✗ + (int)o_m0[(y+3)*o + x-1] + (int)o_m0[(y+3)*o + x ] + (int)o_m0[(y+3)*o + x+1] + (int)o_m0[(y+3)*o + x+2]
104 ✗ + (int)o_m0[(y-1)*o + x-2] + (int)o_m0[ y *o + x-2] + (int)o_m0[(y+1)*o + x-2] + (int)o_m0[(y+2)*o + x-2]
105 ✗ + (int)o_m0[(y-1)*o + x+3] + (int)o_m0[ y *o + x+3] + (int)o_m0[(y+1)*o + x+3] + (int)o_m0[(y+2)*o + x+3]);
106 ✗ sa_act += (uint64_t) abs(f);
107 }
108 }
109 ✗ return sa_act;
110 }
111
112 ✗ static uint64_t diff1st(const uint32_t w_act, const uint32_t h_act, const int16_t *o_m0, int16_t *o_m1, const int o)
113 {
114 ✗ uint64_t ta_act = 0;
115
116 ✗ for (uint32_t y = 0; y < h_act; y += 2) {
117 ✗ for (uint32_t x = 0; x < w_act; x += 2) {
118 ✗ const int t = (int)o_m0[y*o + x] + (int)o_m0[y*o + x+1] + (int)o_m0[(y+1)*o + x] + (int)o_m0[(y+1)*o + x+1]
119 ✗ - ((int)o_m1[y*o + x] + (int)o_m1[y*o + x+1] + (int)o_m1[(y+1)*o + x] + (int)o_m1[(y+1)*o + x+1]);
120 ✗ ta_act += (uint64_t) abs(t);
121 ✗ o_m1[y*o + x ] = o_m0[y*o + x ]; o_m1[(y+1)*o + x ] = o_m0[(y+1)*o + x ];
122 ✗ o_m1[y*o + x+1] = o_m0[y*o + x+1]; o_m1[(y+1)*o + x+1] = o_m0[(y+1)*o + x+1];
123 }
124 }
125 ✗ return (ta_act * XPSNR_GAMMA);
126 }
127
128 ✗ static uint64_t diff2nd(const uint32_t w_act, const uint32_t h_act, const int16_t *o_m0, int16_t *o_m1, int16_t *o_m2, const int o)
129 {
130 ✗ uint64_t ta_act = 0;
131
132 ✗ for (uint32_t y = 0; y < h_act; y += 2) {
133 ✗ for (uint32_t x = 0; x < w_act; x += 2) {
134 ✗ const int t = (int)o_m0[y*o + x] + (int)o_m0[y*o + x+1] + (int)o_m0[(y+1)*o + x] + (int)o_m0[(y+1)*o + x+1]
135 ✗ - 2 * ((int)o_m1[y*o + x] + (int)o_m1[y*o + x+1] + (int)o_m1[(y+1)*o + x] + (int)o_m1[(y+1)*o + x+1])
136 ✗ + (int)o_m2[y*o + x] + (int)o_m2[y*o + x+1] + (int)o_m2[(y+1)*o + x] + (int)o_m2[(y+1)*o + x+1];
137 ✗ ta_act += (uint64_t) abs(t);
138 ✗ o_m2[y*o + x ] = o_m1[y*o + x ]; o_m2[(y+1)*o + x ] = o_m1[(y+1)*o + x ];
139 ✗ o_m2[y*o + x+1] = o_m1[y*o + x+1]; o_m2[(y+1)*o + x+1] = o_m1[(y+1)*o + x+1];
140 ✗ o_m1[y*o + x ] = o_m0[y*o + x ]; o_m1[(y+1)*o + x ] = o_m0[(y+1)*o + x ];
141 ✗ o_m1[y*o + x+1] = o_m0[y*o + x+1]; o_m1[(y+1)*o + x+1] = o_m0[(y+1)*o + x+1];
142 }
143 }
144 ✗ return (ta_act * XPSNR_GAMMA);
145 }
146
147 12750 static inline uint64_t calc_squared_error(XPSNRContext const *s,
148 const int16_t *blk_org, const uint32_t stride_org,
149 const int16_t *blk_rec, const uint32_t stride_rec,
150 const uint32_t block_width, const uint32_t block_height)
151 {
152 12750 uint64_t sse = 0; /* sum of squared errors */
153
154
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 162750 for (uint32_t y = 0; y < block_height; y++) {
155 150000 sse += s->pdsp.sse_line((const uint8_t *) blk_org, (const uint8_t *) blk_rec, (int) block_width);
156 150000 blk_org += stride_org;
157 150000 blk_rec += stride_rec;
158 }
159
160 /* return nonweighted sum of squared errors */
161 12750 return sse;
162 }
163
164 4250 static inline double calc_squared_error_and_weight (XPSNRContext const *s,
165 const int16_t *pic_org, const uint32_t stride_org,
166 int16_t *pic_org_m1, int16_t *pic_org_m2,
167 const int16_t *pic_rec, const uint32_t stride_rec,
168 const uint32_t offset_x, const uint32_t offset_y,
169 const uint32_t block_width, const uint32_t block_height,
170 const uint32_t bit_depth, const uint32_t int_frame_rate, double *ms_act)
171 {
172 4250 const int o = (int) stride_org;
173 4250 const int r = (int) stride_rec;
174 4250 const int16_t *o_m0 = pic_org + offset_y * o + offset_x;
175 4250 int16_t *o_m1 = pic_org_m1 + offset_y * o + offset_x;
176 4250 int16_t *o_m2 = pic_org_m2 + offset_y * o + offset_x;
177 4250 const int16_t *r_m0 = pic_rec + offset_y * r + offset_x;
178
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 4250 const int b_val = (s->plane_width[0] * s->plane_height[0] > 2048 * 1152 ? 2 : 1); /* threshold is a bit more than HD resolution */
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 4250 const int x_act = (offset_x > 0 ? 0 : b_val);
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 4250 const int y_act = (offset_y > 0 ? 0 : b_val);
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 4250 const int w_act = (offset_x + block_width < (uint32_t) s->plane_width [0] ? (int) block_width : (int) block_width - b_val);
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 4250 const int h_act = (offset_y + block_height < (uint32_t) s->plane_height[0] ? (int) block_height : (int) block_height - b_val);
183
184 4250 const double sse = (double) calc_squared_error (s, o_m0, stride_org,
185 r_m0, stride_rec,
186 block_width, block_height);
187 4250 uint64_t sa_act = 0; /* spatial abs. activity */
188 4250 uint64_t ta_act = 0; /* temporal abs. activity */
189
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 4250 if (w_act <= x_act || h_act <= y_act) /* small */
191 ✗ return sse;
192
193
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 4250 if (b_val > 1) { /* highpass with downsampling */
194 ✗ if (w_act > 12)
195 ✗ sa_act = s->dsp.highds_func(x_act, y_act, w_act, h_act, o_m0, o);
196 else
197 ✗ highds(x_act, y_act, w_act, h_act, o_m0, o);
198 } else { /* <=HD highpass without downsampling */
199
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 53750 for (int y = y_act; y < h_act; y++) {
200
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 639540 for (int x = x_act; x < w_act; x++) {
201 590040 const int f = 12 * (int)o_m0[y*o + x] - 2 * ((int)o_m0[y*o + x-1] + (int)o_m0[y*o + x+1] + (int)o_m0[(y-1)*o + x] + (int)o_m0[(y+1)*o + x])
202 590040 - ((int)o_m0[(y-1)*o + x-1] + (int)o_m0[(y-1)*o + x+1] + (int)o_m0[(y+1)*o + x-1] + (int)o_m0[(y+1)*o + x+1]);
203 590040 sa_act += (uint64_t) abs(f);
204 }
205 }
206 }
207
208 /* calculate weight (average squared activity) */
209 4250 *ms_act = (double) sa_act / ((double) (w_act - x_act) * (double) (h_act - y_act));
210
211
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 4250 if (b_val > 1) { /* highpass with downsampling */
212 ✗ if (int_frame_rate < 32) /* 1st-order diff */
213 ✗ ta_act = s->dsp.diff1st_func(block_width, block_height, o_m0, o_m1, o);
214 else /* 2nd-order diff (diff of two diffs) */
215 ✗ ta_act = s->dsp.diff2nd_func(block_width, block_height, o_m0, o_m1, o_m2, o);
216 } else { /* <=HD highpass without downsampling */
217
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 4250 if (int_frame_rate < 32) { /* 1st-order diff */
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 54250 for (uint32_t y = 0; y < block_height; y++) {
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 650000 for (uint32_t x = 0; x < block_width; x++) {
220 600000 const int t = (int)o_m0[y * o + x] - (int)o_m1[y * o + x];
221
222 600000 ta_act += XPSNR_GAMMA * (uint64_t) abs(t);
223 600000 o_m1[y * o + x] = o_m0[y * o + x];
224 }
225 }
226 } else { /* 2nd-order diff (diff of 2 diffs) */
227 ✗ for (uint32_t y = 0; y < block_height; y++) {
228 ✗ for (uint32_t x = 0; x < block_width; x++) {
229 ✗ const int t = (int)o_m0[y * o + x] - 2 * (int)o_m1[y * o + x] + (int)o_m2[y * o + x];
230
231 ✗ ta_act += XPSNR_GAMMA * (uint64_t) abs(t);
232 ✗ o_m2[y * o + x] = o_m1[y * o + x];
233 ✗ o_m1[y * o + x] = o_m0[y * o + x];
234 }
235 }
236 }
237 }
238
239 /* weight += mean squared temporal activity */
240 4250 *ms_act += (double) ta_act / ((double) block_width * (double) block_height);
241
242 /* lower limit, accounts for high-pass gain */
243
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 4250 if (*ms_act < (double) (1 << (bit_depth - 6)))
244 1813 *ms_act = (double) (1 << (bit_depth - 6));
245
246 4250 *ms_act *= *ms_act; /* since SSE is squared */
247
248 /* return nonweighted sum of squared errors */
249 4250 return sse;
250 }
251
252 36 static inline double get_avg_xpsnr (const double sqrt_wsse_val, const double sum_xpsnr_val,
253 const uint32_t image_width, const uint32_t image_height,
254 const uint64_t max_error_64, const uint64_t num_frames_64)
255 {
256
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 36 if (num_frames_64 == 0)
257 ✗ return INFINITY;
258
259
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 36 if (sqrt_wsse_val >= (double) num_frames_64) { /* square-mean-root average */
260 36 const double avg_dist = sqrt_wsse_val / (double) num_frames_64;
261 36 const uint64_t num64 = (uint64_t) image_width * (uint64_t) image_height * max_error_64;
262
263 36 return 10.0 * log10((double) num64 / ((double) avg_dist * (double) avg_dist));
264 }
265
266 ✗ return sum_xpsnr_val / (double) num_frames_64; /* older log-domain average */
267 }
268
269 10 static int get_wsse(AVFilterContext *ctx, int16_t **org, int16_t **org_m1, int16_t **org_m2, int16_t **rec,
270 uint64_t *const wsse64)
271 {
272 10 XPSNRContext *const s = ctx->priv;
273 10 const uint32_t w = s->plane_width [0]; /* luma image width in pixels */
274 10 const uint32_t h = s->plane_height[0];/* luma image height in pixels */
275 10 const double r = (double)(w * h) / (3840.0 * 2160.0); /* UHD ratio */
276 10 const uint32_t b = FFMAX(0, 4 * (int32_t) (32.0 * sqrt(r) +
277 0.5)); /* block size, integer multiple of 4 for SIMD */
278 10 const uint32_t w_blk = (w + b - 1) / b; /* luma width in units of blocks */
279
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 10 const double avg_act = sqrt(16.0 * (double) (1 << (2 * s->depth - 9)) / sqrt(FFMAX(0.00001,
280 r))); /* the sqrt(a_pic) */
281
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 10 const int *stride_org = (s->bpp == 1 ? s->plane_width : s->line_sizes);
282 10 uint32_t x, y, idx_blk = 0; /* the "16.0" above is due to fixed-point code */
283 10 double *const sse_luma = s->sse_luma;
284 10 double *const weights = s->weights;
285 int c;
286
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 10 if (!wsse64 || (s->depth < 6) || (s->depth > 16) || (s->num_comps <= 0) ||
288
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 10 (s->num_comps > 3) || (w == 0) || (h == 0)) {
289 ✗ av_log(ctx, AV_LOG_ERROR, "Error in XPSNR routine: invalid argument(s).\n");
290 ✗ return AVERROR(EINVAL);
291 }
292
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 10 if (!weights || (b >= 4 && !sse_luma)) {
293 ✗ av_log(ctx, AV_LOG_ERROR, "Failed to allocate temporary block memory.\n");
294 ✗ return AVERROR(ENOMEM);
295 }
296
297
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 10 if (b >= 4) {
298 10 const int16_t *p_org = org[0];
299 10 const uint32_t s_org = stride_org[0] / s->bpp;
300 10 const int16_t *p_rec = rec[0];
301 10 const uint32_t s_rec = s->plane_width[0];
302 10 int16_t *p_org_m1 = org_m1[0]; /* pixel */
303 10 int16_t *p_org_m2 = org_m2[0]; /* memory */
304 10 double wsse_luma = 0.0;
305
306
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 180 for (y = 0; y < h; y += b) { /* calculate block SSE and perceptual weights */
307
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 170 const uint32_t block_height = (y + b > h ? h - y : b);
308
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 4420 for (x = 0; x < w; x += b, idx_blk++) {
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 4250 const uint32_t block_width = (x + b > w ? w - x : b);
311 4250 double ms_act = 1.0, ms_act_prev = 0.0;
312
313 8500 sse_luma[idx_blk] = calc_squared_error_and_weight(s, p_org, s_org,
314 p_org_m1, p_org_m2,
315 p_rec, s_rec,
316 x, y,
317 block_width, block_height,
318 4250 s->depth, s->frame_rate, &ms_act);
319 4250 weights[idx_blk] = 1.0 / sqrt(ms_act);
320
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 4250 if (w * h <= 640 * 480) { /* in-line "min-smoothing" as in paper */
322
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 4250 if (x == 0) /* first column */
323
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 170 ms_act_prev = (idx_blk > 1 ? weights[idx_blk - 2] : 0);
324 else /* after first column */
325
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 4080 ms_act_prev = (x > b ? FFMAX(weights[idx_blk - 2], weights[idx_blk]) : weights[idx_blk]);
326
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 4250 if (idx_blk > w_blk) /* after the first row and first column */
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 3990 ms_act_prev = FFMAX(ms_act_prev, weights[idx_blk - 1 - w_blk]); /* min (L, T) */
329
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 4250 if ((idx_blk > 0) && (weights[idx_blk - 1] > ms_act_prev))
330 145 weights[idx_blk - 1] = ms_act_prev;
331
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 4250 if ((x + b >= w) && (y + b >= h) && (idx_blk > w_blk)) { /* last block in picture */
333
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 10 ms_act_prev = FFMAX(weights[idx_blk - 1], weights[idx_blk - w_blk]);
334
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 10 if (weights[idx_blk] > ms_act_prev)
335 4 weights[idx_blk] = ms_act_prev;
336 }
337 }
338 } /* for x */
339 } /* for y */
340
341
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 180 for (y = idx_blk = 0; y < h; y += b) { /* calculate sum for luma (Y) XPSNR */
342
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 4420 for (x = 0; x < w; x += b, idx_blk++) {
343 4250 wsse_luma += sse_luma[idx_blk] * weights[idx_blk];
344 }
345 }
346
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 10 wsse64[0] = (wsse_luma <= 0.0 ? 0 : (uint64_t) (wsse_luma * avg_act + 0.5));
347 } /* b >= 4 */
348
349
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 40 for (c = 0; c < s->num_comps; c++) { /* finalize WSSE value for each component */
350 30 const int16_t *p_org = org[c];
351 30 const uint32_t s_org = stride_org[c] / s->bpp;
352 30 const int16_t *p_rec = rec[c];
353 30 const uint32_t s_rec = s->plane_width[c];
354 30 const uint32_t w_pln = s->plane_width[c];
355 30 const uint32_t h_pln = s->plane_height[c];
356
357
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 30 if (b < 4) /* picture is too small for XPSNR, calculate nonweighted PSNR */
358 ✗ wsse64[c] = calc_squared_error (s, p_org, s_org,
359 p_rec, s_rec,
360 w_pln, h_pln);
361
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 30 else if (c > 0) { /* b >= 4 so Y XPSNR has already been calculated above */
362 20 const uint32_t bx = (b * w_pln) / w;
363 20 const uint32_t by = (b * h_pln) / h; /* up to chroma downsampling by 4 */
364 20 double wsse_chroma = 0.0;
365
366
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 360 for (y = idx_blk = 0; y < h_pln; y += by) { /* calc chroma (Cb/Cr) XPSNR */
367
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 340 const uint32_t block_height = (y + by > h_pln ? h_pln - y : by);
368
369
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 8840 for (x = 0; x < w_pln; x += bx, idx_blk++) {
370
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 8500 const uint32_t block_width = (x + bx > w_pln ? w_pln - x : bx);
371
372 17000 wsse_chroma += (double) calc_squared_error (s, p_org + y * s_org + x, s_org,
373 8500 p_rec + y * s_rec + x, s_rec,
374 8500 block_width, block_height) * weights[idx_blk];
375 }
376 }
377
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 20 wsse64[c] = (wsse_chroma <= 0.0 ? 0 : (uint64_t) (wsse_chroma * avg_act + 0.5));
378 }
379 } /* for c */
380
381 10 return 0;
382 }
383
384 30 static void set_meta(AVDictionary **metadata, const char *key, char comp, float d)
385 {
386 char value[128];
387 30 snprintf(value, sizeof(value), "%f", d);
388
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 30 if (comp) {
389 char key2[128];
390 30 snprintf(key2, sizeof(key2), "%s%c", key, comp);
391 30 av_dict_set(metadata, key2, value, 0);
392 } else {
393 ✗ av_dict_set(metadata, key, value, 0);
394 }
395 30 }
396
397 10 static int do_xpsnr(FFFrameSync *fs)
398 {
399 10 AVFilterContext *ctx = fs->parent;
400 10 XPSNRContext *const s = ctx->priv;
401 10 const uint32_t w = s->plane_width [0]; /* luma image width in pixels */
402 10 const uint32_t h = s->plane_height[0]; /* luma image height in pixels */
403 10 const uint32_t b = FFMAX(0, 4 * (int32_t) (32.0 * sqrt((double) (w * h) / (3840.0 * 2160.0)) + 0.5)); /* block size */
404 10 const uint32_t w_blk = (w + b - 1) / b; /* luma width in units of blocks */
405 10 const uint32_t h_blk = (h + b - 1) / b; /* luma height in units of blocks */
406 10 AVFrame *master, *ref = NULL;
407 int16_t *porg [3];
408 int16_t *porg_m1[3];
409 int16_t *porg_m2[3];
410 int16_t *prec [3];
411 10 uint64_t wsse64 [3] = {0, 0, 0};
412 10 double cur_xpsnr[3] = {INFINITY, INFINITY, INFINITY};
413 int c, ret_value;
414 AVDictionary **metadata;
415
416
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 10 if ((ret_value = ff_framesync_dualinput_get(fs, &master, &ref)) < 0)
417 ✗ return ret_value;
418
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 10 if (ctx->is_disabled || !ref)
419 ✗ return ff_filter_frame(ctx->outputs[0], master);
420 10 metadata = &master->metadata;
421
422 /* prepare XPSNR calculations: allocate temporary picture and block memory */
423
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 10 if (!s->sse_luma)
424 2 s->sse_luma = av_malloc_array(w_blk * h_blk, sizeof(double));
425
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 10 if (!s->weights)
426 2 s->weights = av_malloc_array(w_blk * h_blk, sizeof(double));
427
428
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 40 for (c = 0; c < s->num_comps; c++) { /* create temporal org buffer memory */
429 30 s->line_sizes[c] = master->linesize[c];
430
431
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 30 if (c == 0) { /* luma ch. */
432
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 10 const int stride_org_bpp = (s->bpp == 1 ? s->plane_width[c] : s->line_sizes[c] / s->bpp);
433
434
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 10 if (!s->buf_org_m1[c])
435 2 s->buf_org_m1[c] = av_buffer_allocz(stride_org_bpp * s->plane_height[c] * sizeof(int16_t));
436
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 10 if (!s->buf_org_m2[c])
437 2 s->buf_org_m2[c] = av_buffer_allocz(stride_org_bpp * s->plane_height[c] * sizeof(int16_t));
438
439 10 porg_m1[c] = (int16_t *) s->buf_org_m1[c]->data;
440 10 porg_m2[c] = (int16_t *) s->buf_org_m2[c]->data;
441 }
442 }
443
444
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 10 if (s->bpp == 1) { /* 8 bit */
445
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 40 for (c = 0; c < s->num_comps; c++) { /* allocate org/rec buffer memory */
446 30 const int m = s->line_sizes[c]; /* master stride */
447 30 const int r = ref->linesize[c]; /* ref/c stride */
448 30 const int o = s->plane_width[c]; /* XPSNR stride */
449
450
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 30 if (!s->buf_org[c])
451 6 s->buf_org[c] = av_buffer_allocz(s->plane_width[c] * s->plane_height[c] * sizeof(int16_t));
452
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 30 if (!s->buf_rec[c])
453 6 s->buf_rec[c] = av_buffer_allocz(s->plane_width[c] * s->plane_height[c] * sizeof(int16_t));
454
455 30 porg[c] = (int16_t *) s->buf_org[c]->data;
456 30 prec[c] = (int16_t *) s->buf_rec[c]->data;
457
458
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 6030 for (int y = 0; y < s->plane_height[c]; y++) {
459
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 1506000 for (int x = 0; x < s->plane_width[c]; x++) {
460 1500000 porg[c][y * o + x] = (int16_t) master->data[c][y * m + x];
461 1500000 prec[c][y * o + x] = (int16_t) ref->data[c][y * r + x];
462 }
463 }
464 }
465 } else { /* 10, 12, 14 bit */
466 ✗ for (c = 0; c < s->num_comps; c++) {
467 ✗ porg[c] = (int16_t *) master->data[c];
468 ✗ prec[c] = (int16_t *) ref->data[c];
469 }
470 }
471
472 /* extended perceptually weighted peak signal-to-noise ratio (XPSNR) value */
473 10 ret_value = get_wsse(ctx, (int16_t **) &porg, (int16_t **) &porg_m1, (int16_t **) &porg_m2,
474 (int16_t **) &prec, wsse64);
475
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 10 if ( ret_value < 0 )
476 ✗ return ret_value; /* an error here means something went wrong earlier! */
477
478
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 40 for (c = 0; c < s->num_comps; c++) {
479 30 const double sqrt_wsse = sqrt((double) wsse64[c]);
480
481 60 cur_xpsnr[c] = get_avg_xpsnr (sqrt_wsse, INFINITY,
482 30 s->plane_width[c], s->plane_height[c],
483 s->max_error_64, 1 /* single frame */);
484 30 s->sum_wdist[c] += sqrt_wsse;
485 30 s->sum_xpsnr[c] += cur_xpsnr[c];
486
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 30 s->and_is_inf[c] &= isinf(cur_xpsnr[c]);
487 }
488 10 s->num_frames_64++;
489
490
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 40 for (int j = 0; j < s->num_comps; j++) {
491
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 30 int c = s->is_rgb ? s->rgba_map[j] : j;
492 30 set_meta(metadata, "lavfi.xpsnr.xpsnr.", s->comps[j], cur_xpsnr[c]);
493 }
494
495
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 10 if (s->stats_file) { /* print out frame- and component-wise XPSNR averages */
496 ✗ fprintf(s->stats_file, "n: %4"PRId64"", s->num_frames_64);
497
498 ✗ for (c = 0; c < s->num_comps; c++)
499 ✗ fprintf(s->stats_file, " XPSNR %c: %3.4f", s->comps[c], cur_xpsnr[c]);
500 ✗ fprintf(s->stats_file, "\n");
501 }
502
503 10 return ff_filter_frame(ctx->outputs[0], master);
504 }
505
506 4 static av_cold int init(AVFilterContext *ctx)
507 {
508 4 XPSNRContext *const s = ctx->priv;
509 int c;
510
511
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 4 if (s->stats_file_str) {
512 ✗ if (!strcmp(s->stats_file_str, "-")) /* no stats file, so use stdout */
513 ✗ s->stats_file = stdout;
514 else {
515 ✗ s->stats_file = avpriv_fopen_utf8(s->stats_file_str, "w");
516
517 ✗ if (!s->stats_file) {
518 ✗ const int err = AVERROR(errno);
519 char buf[128];
520
521 ✗ av_strerror(err, buf, sizeof(buf));
522 ✗ av_log(ctx, AV_LOG_ERROR, "Could not open statistics file %s: %s\n", s->stats_file_str, buf);
523 ✗ return err;
524 }
525 }
526 }
527
528 4 s->sse_luma = NULL;
529 4 s->weights = NULL;
530
531
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 16 for (c = 0; c < 3; c++) { /* initialize XPSNR data of each color component */
532 12 s->buf_org [c] = NULL;
533 12 s->buf_org_m1[c] = NULL;
534 12 s->buf_org_m2[c] = NULL;
535 12 s->buf_rec [c] = NULL;
536 12 s->sum_wdist [c] = 0.0;
537 12 s->sum_xpsnr [c] = 0.0;
538 12 s->and_is_inf[c] = 1;
539 }
540
541 4 s->fs.on_event = do_xpsnr;
542
543 4 return 0;
544 }
545
546 static const enum AVPixelFormat xpsnr_formats[] = {
547 AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14, AV_PIX_FMT_GRAY16,
548 #define PF_NOALPHA(suf) AV_PIX_FMT_YUV420##suf, AV_PIX_FMT_YUV422##suf, AV_PIX_FMT_YUV444##suf
549 #define PF_ALPHA(suf) AV_PIX_FMT_YUVA420##suf, AV_PIX_FMT_YUVA422##suf, AV_PIX_FMT_YUVA444##suf
550 #define PF(suf) PF_NOALPHA(suf), PF_ALPHA(suf)
551 PF(P), PF(P9), PF(P10), PF_NOALPHA(P12), PF_NOALPHA(P14), PF(P16),
552 AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
553 AV_PIX_FMT_YUVJ411P, AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
554 AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
555 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
556 AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
557 AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
558 AV_PIX_FMT_NONE
559 };
560
561 2 static int config_input_ref(AVFilterLink *inlink)
562 {
563 2 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
564 2 AVFilterContext *ctx = inlink->dst;
565 2 XPSNRContext *const s = ctx->priv;
566 2 FilterLink *il = ff_filter_link(inlink);
567
568
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 2 if ((ctx->inputs[0]->w != ctx->inputs[1]->w) ||
569
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 2 (ctx->inputs[0]->h != ctx->inputs[1]->h)) {
570 ✗ av_log(ctx, AV_LOG_ERROR, "Width and height of the input videos must match.\n");
571 ✗ return AVERROR(EINVAL);
572 }
573
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 2 if (ctx->inputs[0]->format != ctx->inputs[1]->format) {
574 ✗ av_log(ctx, AV_LOG_ERROR, "The input videos must be of the same pixel format.\n");
575 ✗ return AVERROR(EINVAL);
576 }
577
578
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 2 s->bpp = (desc->comp[0].depth <= 8 ? 1 : 2);
579 2 s->depth = desc->comp[0].depth;
580 2 s->max_error_64 = (1 << s->depth) - 1; /* conventional limit */
581 2 s->max_error_64 *= s->max_error_64;
582
583 2 s->frame_rate = il->frame_rate.num / il->frame_rate.den;
584
585 2 s->num_comps = (desc->nb_components > 3 ? 3 : desc->nb_components);
586
587 2 s->is_rgb = (ff_fill_rgba_map(s->rgba_map, inlink->format) >= 0);
588
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 2 s->comps[0] = (s->is_rgb ? 'r' : 'y');
589
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 2 s->comps[1] = (s->is_rgb ? 'g' : 'u');
590
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 2 s->comps[2] = (s->is_rgb ? 'b' : 'v');
591 2 s->comps[3] = 'a';
592
593 2 s->plane_width [1] = s->plane_width [2] = AV_CEIL_RSHIFT(inlink->w, desc->log2_chroma_w);
594 2 s->plane_width [0] = s->plane_width [3] = inlink->w;
595 2 s->plane_height[1] = s->plane_height[2] = AV_CEIL_RSHIFT(inlink->h, desc->log2_chroma_h);
596 2 s->plane_height[0] = s->plane_height[3] = inlink->h;
597
598 /* XPSNR always operates with 16-bit internal precision */
599 2 ff_psnr_init(&s->pdsp, 15);
600 2 s->dsp.highds_func = highds; /* initialize filtering methods */
601 2 s->dsp.diff1st_func = diff1st;
602 2 s->dsp.diff2nd_func = diff2nd;
603
604 2 return 0;
605 }
606
607 2 static int config_output(AVFilterLink *outlink)
608 {
609 2 AVFilterContext *ctx = outlink->src;
610 2 XPSNRContext *s = ctx->priv;
611 2 AVFilterLink *mainlink = ctx->inputs[0];
612 2 FilterLink *il = ff_filter_link(mainlink);
613 2 FilterLink *ol = ff_filter_link(outlink);
614 int ret;
615
616
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 2 if ((ret = ff_framesync_init_dualinput(&s->fs, ctx)) < 0)
617 ✗ return ret;
618
619 2 outlink->w = mainlink->w;
620 2 outlink->h = mainlink->h;
621 2 outlink->time_base = mainlink->time_base;
622 2 outlink->sample_aspect_ratio = mainlink->sample_aspect_ratio;
623 2 ol->frame_rate = il->frame_rate;
624
625
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 2 if ((ret = ff_framesync_configure(&s->fs)) < 0)
626 ✗ return ret;
627
628 2 outlink->time_base = s->fs.time_base;
629
630
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 4 if (av_cmp_q(mainlink->time_base, outlink->time_base) ||
631 2 av_cmp_q(ctx->inputs[1]->time_base, outlink->time_base))
632 ✗ 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",
633 mainlink->time_base.num, mainlink->time_base.den,
634 ✗ ctx->inputs[1]->time_base.num, ctx->inputs[1]->time_base.den);
635
636 2 return 0;
637 }
638
639 30 static int activate(AVFilterContext *ctx)
640 {
641 30 XPSNRContext *s = ctx->priv;
642
643 30 return ff_framesync_activate(&s->fs);
644 }
645
646 4 static av_cold void uninit(AVFilterContext *ctx)
647 {
648 4 XPSNRContext *const s = ctx->priv;
649 int c;
650
651
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 4 if (s->num_frames_64 > 0) { /* print out overall component-wise mean XPSNR */
652 2 const double xpsnr_luma = get_avg_xpsnr(s->sum_wdist[0], s->sum_xpsnr[0],
653 2 s->plane_width[0], s->plane_height[0],
654 s->max_error_64, s->num_frames_64);
655 2 double xpsnr_min = xpsnr_luma;
656
657 /* luma */
658 2 av_log(ctx, AV_LOG_INFO, "XPSNR %c: %3.4f", s->comps[0], xpsnr_luma);
659
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 2 if (s->stats_file) {
660 ✗ fprintf(s->stats_file, "\nXPSNR average, %"PRId64" frames", s->num_frames_64);
661 ✗ fprintf(s->stats_file, " %c: %3.4f", s->comps[0], xpsnr_luma);
662 }
663 /* chroma */
664
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 6 for (c = 1; c < s->num_comps; c++) {
665 4 const double xpsnr_chroma = get_avg_xpsnr(s->sum_wdist[c], s->sum_xpsnr[c],
666 4 s->plane_width[c], s->plane_height[c],
667 s->max_error_64, s->num_frames_64);
668
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 4 if (xpsnr_min > xpsnr_chroma)
669 3 xpsnr_min = xpsnr_chroma;
670
671 4 av_log(ctx, AV_LOG_INFO, " %c: %3.4f", s->comps[c], xpsnr_chroma);
672
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 4 if (s->stats_file && s->stats_file != stdout)
673 ✗ fprintf(s->stats_file, " %c: %3.4f", s->comps[c], xpsnr_chroma);
674 }
675 /* print out line break, and minimum XPSNR across the color components */
676
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 2 if (s->num_comps > 1) {
677 2 av_log(ctx, AV_LOG_INFO, " (minimum: %3.4f)\n", xpsnr_min);
678
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 2 if (s->stats_file && s->stats_file != stdout)
679 ✗ fprintf(s->stats_file, " (minimum: %3.4f)\n", xpsnr_min);
680 } else {
681 ✗ av_log(ctx, AV_LOG_INFO, "\n");
682 ✗ if (s->stats_file && s->stats_file != stdout)
683 ✗ fprintf(s->stats_file, "\n");
684 }
685 }
686
687 4 ff_framesync_uninit(&s->fs); /* free temporary picture or block buf memory */
688
689
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 4 if (s->stats_file && s->stats_file != stdout)
690 ✗ fclose(s->stats_file);
691
692 4 av_freep(&s->sse_luma);
693 4 av_freep(&s->weights );
694
695
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 10 for (c = 0; c < s->num_comps; c++) { /* free extra temporal org buf memory */
696
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 6 if(s->buf_org_m1[c])
697 2 av_freep(s->buf_org_m1[c]);
698
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 6 if(s->buf_org_m2[c])
699 2 av_freep(s->buf_org_m2[c]);
700 }
701
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 4 if (s->bpp == 1) { /* 8 bit */
702
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 8 for (c = 0; c < s->num_comps; c++) { /* and org/rec picture buf memory */
703
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 6 if(s->buf_org_m2[c])
704 2 av_freep(s->buf_org[c]);
705
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 6 if(s->buf_rec[c])
706 6 av_freep(s->buf_rec[c]);
707 }
708 }
709 4 }
710
711 static const AVFilterPad xpsnr_inputs[] = {
712 {
713 .name = "main",
714 .type = AVMEDIA_TYPE_VIDEO,
715 }, {
716 .name = "reference",
717 .type = AVMEDIA_TYPE_VIDEO,
718 .config_props = config_input_ref,
719 }
720 };
721
722 static const AVFilterPad xpsnr_outputs[] = {
723 {
724 .name = "default",
725 .type = AVMEDIA_TYPE_VIDEO,
726 .config_props = config_output,
727 }
728 };
729
730 const AVFilter ff_vf_xpsnr = {
731 .name = "xpsnr",
732 .description = NULL_IF_CONFIG_SMALL("Calculate the extended perceptually weighted peak signal-to-noise ratio (XPSNR) between two video streams."),
733 .preinit = xpsnr_framesync_preinit,
734 .init = init,
735 .uninit = uninit,
736 .activate = activate,
737 .priv_size = sizeof(XPSNRContext),
738 .priv_class = &xpsnr_class,
739 FILTER_INPUTS (xpsnr_inputs),
740 FILTER_OUTPUTS(xpsnr_outputs),
741 FILTER_PIXFMTS_ARRAY(xpsnr_formats),
742 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_METADATA_ONLY
743 };
744