FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavfilter/vf_geq.c
Date: 2026-06-06 18:10:07
Exec Total Coverage
Lines: 0 248 0.0%
Functions: 0 18 0.0%
Branches: 0 198 0.0%
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1 /*
2 * Copyright (C) 2006 Michael Niedermayer <michaelni@gmx.at>
3 * Copyright (C) 2012 Clément Bœsch <u pkh me>
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * FFmpeg is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 /**
23 * @file
24 * Generic equation change filter
25 * Originally written by Michael Niedermayer for the MPlayer project, and
26 * ported by Clément Bœsch for FFmpeg.
27 */
28
29 #include "libavutil/avassert.h"
30 #include "libavutil/avstring.h"
31 #include "libavutil/eval.h"
32 #include "libavutil/mem.h"
33 #include "libavutil/opt.h"
34 #include "libavutil/pixdesc.h"
35
36 #include "filters.h"
37 #include "formats.h"
38 #include "video.h"
39
40 #define MAX_NB_THREADS 32
41 #define NB_PLANES 4
42
43 enum InterpolationMethods {
44 INTERP_NEAREST,
45 INTERP_BILINEAR,
46 NB_INTERP
47 };
48
49 static const char *const var_names[] = { "X", "Y", "W", "H", "N", "SW", "SH", "T", NULL };
50 enum { VAR_X, VAR_Y, VAR_W, VAR_H, VAR_N, VAR_SW, VAR_SH, VAR_T, VAR_VARS_NB };
51
52 typedef struct GEQContext {
53 const AVClass *class;
54 AVExpr *e[NB_PLANES][MAX_NB_THREADS]; ///< expressions for each plane and thread
55 char *expr_str[4+3]; ///< expression strings for each plane
56 AVFrame *picref; ///< current input buffer
57 uint8_t *dst; ///< reference pointer to the 8bits output
58 uint16_t *dst16; ///< reference pointer to the 16bits output
59 float *dst32; ///< reference pointer to the 32bits output
60 double values[VAR_VARS_NB]; ///< expression values
61 int hsub, vsub; ///< chroma subsampling
62 int planes; ///< number of planes
63 int interpolation;
64 int is_rgb;
65 int bps;
66
67 double *pixel_sums[NB_PLANES];
68 int needs_sum[NB_PLANES];
69 } GEQContext;
70
71 enum { Y = 0, U, V, A, G, B, R };
72
73 #define OFFSET(x) offsetof(GEQContext, x)
74 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
75
76 static const AVOption geq_options[] = {
77 { "lum_expr", "set luminance expression", OFFSET(expr_str[Y]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
78 { "lum", "set luminance expression", OFFSET(expr_str[Y]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
79 { "cb_expr", "set chroma blue expression", OFFSET(expr_str[U]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
80 { "cb", "set chroma blue expression", OFFSET(expr_str[U]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
81 { "cr_expr", "set chroma red expression", OFFSET(expr_str[V]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
82 { "cr", "set chroma red expression", OFFSET(expr_str[V]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
83 { "alpha_expr", "set alpha expression", OFFSET(expr_str[A]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
84 { "a", "set alpha expression", OFFSET(expr_str[A]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
85 { "red_expr", "set red expression", OFFSET(expr_str[R]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
86 { "r", "set red expression", OFFSET(expr_str[R]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
87 { "green_expr", "set green expression", OFFSET(expr_str[G]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
88 { "g", "set green expression", OFFSET(expr_str[G]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
89 { "blue_expr", "set blue expression", OFFSET(expr_str[B]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
90 { "b", "set blue expression", OFFSET(expr_str[B]), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
91 { "interpolation","set interpolation method", OFFSET(interpolation), AV_OPT_TYPE_INT, {.i64=INTERP_BILINEAR}, 0, NB_INTERP-1, FLAGS, .unit = "interp" },
92 { "i", "set interpolation method", OFFSET(interpolation), AV_OPT_TYPE_INT, {.i64=INTERP_BILINEAR}, 0, NB_INTERP-1, FLAGS, .unit = "interp" },
93 { "nearest", "nearest interpolation", 0, AV_OPT_TYPE_CONST, {.i64=INTERP_NEAREST}, 0, 0, FLAGS, .unit = "interp" },
94 { "n", "nearest interpolation", 0, AV_OPT_TYPE_CONST, {.i64=INTERP_NEAREST}, 0, 0, FLAGS, .unit = "interp" },
95 { "bilinear", "bilinear interpolation", 0, AV_OPT_TYPE_CONST, {.i64=INTERP_BILINEAR}, 0, 0, FLAGS, .unit = "interp" },
96 { "b", "bilinear interpolation", 0, AV_OPT_TYPE_CONST, {.i64=INTERP_BILINEAR}, 0, 0, FLAGS, .unit = "interp" },
97 {NULL},
98 };
99
100 AVFILTER_DEFINE_CLASS(geq);
101
102 ✗ static inline double getpix(void *priv, double x, double y, int plane)
103 {
104 int xi, yi;
105 ✗ GEQContext *geq = priv;
106 ✗ AVFrame *picref = geq->picref;
107 ✗ const uint8_t *src = picref->data[plane];
108 ✗ int linesize = picref->linesize[plane];
109 ✗ const int w = (plane == 1 || plane == 2) ? AV_CEIL_RSHIFT(picref->width, geq->hsub) : picref->width;
110 ✗ const int h = (plane == 1 || plane == 2) ? AV_CEIL_RSHIFT(picref->height, geq->vsub) : picref->height;
111
112 ✗ if (!src)
113 ✗ return 0;
114
115 ✗ if (geq->interpolation == INTERP_BILINEAR) {
116 int xn, yn;
117
118 ✗ xi = x = av_clipd(x, 0, w - 1);
119 ✗ yi = y = av_clipd(y, 0, h - 1);
120 ✗ xn = FFMIN(xi + 1, w - 1);
121 ✗ yn = FFMIN(yi + 1, h - 1);
122
123 ✗ x -= xi;
124 ✗ y -= yi;
125
126 ✗ if (geq->bps > 8 && geq->bps <= 16) {
127 ✗ const uint16_t *src16 = (const uint16_t*)src;
128 ✗ linesize /= 2;
129
130 ✗ return (1-y)*((1-x)*src16[xi + yi * linesize] + x*src16[xn + yi * linesize])
131 ✗ + y *((1-x)*src16[xi + yn * linesize] + x*src16[xn + yn * linesize]);
132 ✗ } else if (geq->bps == 32) {
133 ✗ const float *src32 = (const float*)src;
134 ✗ linesize /= 4;
135
136 ✗ return (1-y)*((1-x)*src32[xi + yi * linesize] + x*src32[xn + yi * linesize])
137 ✗ + y *((1-x)*src32[xi + yn * linesize] + x*src32[xn + yn * linesize]);
138 ✗ } else if (geq->bps == 8) {
139 ✗ return (1-y)*((1-x)*src[xi + yi * linesize] + x*src[xn + yi * linesize])
140 ✗ + y *((1-x)*src[xi + yn * linesize] + x*src[xn + yn * linesize]);
141 }
142 } else {
143 ✗ xi = av_clipd(x, 0, w - 1);
144 ✗ yi = av_clipd(y, 0, h - 1);
145
146 ✗ if (geq->bps > 8 && geq->bps <= 16) {
147 ✗ const uint16_t *src16 = (const uint16_t*)src;
148 ✗ linesize /= 2;
149
150 ✗ return src16[xi + yi * linesize];
151 ✗ } else if (geq->bps == 32) {
152 ✗ const float *src32 = (const float*)src;
153 ✗ linesize /= 4;
154
155 ✗ return src32[xi + yi * linesize];
156 ✗ } else if (geq->bps == 8) {
157 ✗ return src[xi + yi * linesize];
158 }
159 }
160
161 ✗ return 0;
162 }
163
164 ✗ static int calculate_sums(GEQContext *geq, int plane, int w, int h)
165 {
166 int xi, yi;
167 ✗ AVFrame *picref = geq->picref;
168 ✗ const uint8_t *src = picref->data[plane];
169 ✗ int linesize = picref->linesize[plane];
170
171 ✗ if (!geq->pixel_sums[plane])
172 ✗ geq->pixel_sums[plane] = av_malloc_array(w, h * sizeof (*geq->pixel_sums[plane]));
173 ✗ if (!geq->pixel_sums[plane])
174 ✗ return AVERROR(ENOMEM);
175 ✗ if (geq->bps == 32)
176 ✗ linesize /= 4;
177 ✗ else if (geq->bps > 8 && geq->bps <= 16)
178 ✗ linesize /= 2;
179 ✗ for (yi = 0; yi < h; yi ++) {
180 ✗ if (geq->bps > 8 && geq->bps <= 16) {
181 ✗ const uint16_t *src16 = (const uint16_t*)src;
182 ✗ double linesum = 0;
183
184 ✗ for (xi = 0; xi < w; xi ++) {
185 ✗ linesum += src16[xi + yi * linesize];
186 ✗ geq->pixel_sums[plane][xi + yi * w] = linesum;
187 }
188 ✗ } else if (geq->bps == 8) {
189 ✗ double linesum = 0;
190
191 ✗ for (xi = 0; xi < w; xi ++) {
192 ✗ linesum += src[xi + yi * linesize];
193 ✗ geq->pixel_sums[plane][xi + yi * w] = linesum;
194 }
195 ✗ } else if (geq->bps == 32) {
196 ✗ const float *src32 = (const float*)src;
197 ✗ double linesum = 0;
198
199 ✗ for (xi = 0; xi < w; xi ++) {
200 ✗ linesum += src32[xi + yi * linesize];
201 ✗ geq->pixel_sums[plane][xi + yi * w] = linesum;
202 }
203 }
204 ✗ if (yi)
205 ✗ for (xi = 0; xi < w; xi ++) {
206 ✗ geq->pixel_sums[plane][xi + yi * w] += geq->pixel_sums[plane][xi + yi * w - w];
207 }
208 }
209 ✗ return 0;
210 }
211
212 ✗ static inline double getpix_integrate_internal(GEQContext *geq, int x, int y, int plane, int w, int h)
213 {
214 ✗ if (x > w - 1) {
215 ✗ double boundary = getpix_integrate_internal(geq, w - 1, y, plane, w, h);
216 ✗ return 2*boundary - getpix_integrate_internal(geq, 2*(w - 1) - x, y, plane, w, h);
217 ✗ } else if (y > h - 1) {
218 ✗ double boundary = getpix_integrate_internal(geq, x, h - 1, plane, w, h);
219 ✗ return 2*boundary - getpix_integrate_internal(geq, x, 2*(h - 1) - y, plane, w, h);
220 ✗ } else if (x < 0) {
221 ✗ if (x == -1) return 0;
222 ✗ return - getpix_integrate_internal(geq, -x-2, y, plane, w, h);
223 ✗ } else if (y < 0) {
224 ✗ if (y == -1) return 0;
225 ✗ return - getpix_integrate_internal(geq, x, -y-2, plane, w, h);
226 }
227
228 ✗ return geq->pixel_sums[plane][x + y * w];
229 }
230
231 ✗ static inline double getpix_integrate(void *priv, double x, double y, int plane) {
232 ✗ GEQContext *geq = priv;
233 ✗ AVFrame *picref = geq->picref;
234 ✗ const uint8_t *src = picref->data[plane];
235 ✗ const int w = (plane == 1 || plane == 2) ? AV_CEIL_RSHIFT(picref->width, geq->hsub) : picref->width;
236 ✗ const int h = (plane == 1 || plane == 2) ? AV_CEIL_RSHIFT(picref->height, geq->vsub) : picref->height;
237
238 ✗ if (!src)
239 ✗ return 0;
240
241 ✗ return getpix_integrate_internal(geq, lrint(av_clipd(x, -w, 2*w)), lrint(av_clipd(y, -h, 2*h)), plane, w, h);
242 }
243
244 //TODO: cubic interpolate
245 //TODO: keep the last few frames
246 ✗ static double lum(void *priv, double x, double y) { return getpix(priv, x, y, 0); }
247 ✗ static double cb(void *priv, double x, double y) { return getpix(priv, x, y, 1); }
248 ✗ static double cr(void *priv, double x, double y) { return getpix(priv, x, y, 2); }
249 ✗ static double alpha(void *priv, double x, double y) { return getpix(priv, x, y, 3); }
250
251 ✗ static double lumsum(void *priv, double x, double y) { return getpix_integrate(priv, x, y, 0); }
252 ✗ static double cbsum(void *priv, double x, double y) { return getpix_integrate(priv, x, y, 1); }
253 ✗ static double crsub(void *priv, double x, double y) { return getpix_integrate(priv, x, y, 2); }
254 ✗ static double alphasum(void *priv, double x, double y) { return getpix_integrate(priv, x, y, 3); }
255
256 ✗ static av_cold int geq_init(AVFilterContext *ctx)
257 {
258 ✗ GEQContext *geq = ctx->priv;
259 ✗ int plane, ret = 0;
260
261 ✗ if (!geq->expr_str[Y] && !geq->expr_str[G] && !geq->expr_str[B] && !geq->expr_str[R]) {
262 ✗ av_log(ctx, AV_LOG_ERROR, "A luminance or RGB expression is mandatory\n");
263 ✗ ret = AVERROR(EINVAL);
264 ✗ goto end;
265 }
266 ✗ geq->is_rgb = !geq->expr_str[Y];
267
268 ✗ if ((geq->expr_str[Y] || geq->expr_str[U] || geq->expr_str[V]) && (geq->expr_str[G] || geq->expr_str[B] || geq->expr_str[R])) {
269 ✗ av_log(ctx, AV_LOG_ERROR, "Either YCbCr or RGB but not both must be specified\n");
270 ✗ ret = AVERROR(EINVAL);
271 ✗ goto end;
272 }
273
274 ✗ if (!geq->expr_str[U] && !geq->expr_str[V]) {
275 /* No chroma at all: fallback on luma */
276 ✗ geq->expr_str[U] = av_strdup(geq->expr_str[Y]);
277 ✗ geq->expr_str[V] = av_strdup(geq->expr_str[Y]);
278 } else {
279 /* One chroma unspecified, fallback on the other */
280 ✗ if (!geq->expr_str[U]) geq->expr_str[U] = av_strdup(geq->expr_str[V]);
281 ✗ if (!geq->expr_str[V]) geq->expr_str[V] = av_strdup(geq->expr_str[U]);
282 }
283
284 ✗ if (!geq->expr_str[A] && geq->bps != 32) {
285 ✗ geq->expr_str[A] = av_asprintf("%d", (1<<geq->bps) - 1);
286 ✗ } else if (!geq->expr_str[A]) {
287 ✗ geq->expr_str[A] = av_asprintf("%f", 1.f);
288 }
289 ✗ if (!geq->expr_str[G])
290 ✗ geq->expr_str[G] = av_strdup("g(X,Y)");
291 ✗ if (!geq->expr_str[B])
292 ✗ geq->expr_str[B] = av_strdup("b(X,Y)");
293 ✗ if (!geq->expr_str[R])
294 ✗ geq->expr_str[R] = av_strdup("r(X,Y)");
295
296 ✗ if (geq->is_rgb ?
297 ✗ (!geq->expr_str[G] || !geq->expr_str[B] || !geq->expr_str[R])
298 :
299 ✗ (!geq->expr_str[U] || !geq->expr_str[V] || !geq->expr_str[A])) {
300 ✗ ret = AVERROR(ENOMEM);
301 ✗ goto end;
302 }
303
304 ✗ for (plane = 0; plane < NB_PLANES; plane++) {
305 static double (*const p[])(void *, double, double) = {
306 lum , cb , cr , alpha ,
307 lumsum, cbsum, crsub, alphasum,
308 };
309 static const char *const func2_yuv_names[] = {
310 "lum" , "cb" , "cr" , "alpha" , "p",
311 "lumsum", "cbsum", "crsum", "alphasum", "psum",
312 NULL };
313 static const char *const func2_rgb_names[] = {
314 "g" , "b" , "r" , "alpha" , "p",
315 "gsum", "bsum", "rsum", "alphasum", "psum",
316 NULL };
317 ✗ const char *const *func2_names = geq->is_rgb ? func2_rgb_names : func2_yuv_names;
318 ✗ double (*const func2[])(void *, double, double) = {
319 ✗ lum , cb , cr , alpha , p[plane],
320 ✗ lumsum, cbsum, crsub, alphasum, p[plane + 4],
321 NULL };
322 ✗ int counter[10] = {0};
323
324 ✗ for (int i = 0; i < MAX_NB_THREADS; i++) {
325 ✗ ret = av_expr_parse(&geq->e[plane][i], geq->expr_str[plane < 3 && geq->is_rgb ? plane+4 : plane], var_names,
326 NULL, NULL, func2_names, func2, 0, ctx);
327 ✗ if (ret < 0)
328 ✗ goto end;
329 }
330
331 ✗ av_expr_count_func(geq->e[plane][0], counter, FF_ARRAY_ELEMS(counter), 2);
332 ✗ geq->needs_sum[plane] = counter[5] + counter[6] + counter[7] + counter[8] + counter[9];
333 }
334
335 ✗ end:
336 ✗ return ret;
337 }
338
339 ✗ static int geq_query_formats(const AVFilterContext *ctx,
340 AVFilterFormatsConfig **cfg_in,
341 AVFilterFormatsConfig **cfg_out)
342 {
343 ✗ const GEQContext *geq = ctx->priv;
344 static const enum AVPixelFormat yuv_pix_fmts[] = {
345 AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P,
346 AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV440P,
347 AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA420P,
348 AV_PIX_FMT_GRAY8,
349 AV_PIX_FMT_YUV444P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV420P9,
350 AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA420P9,
351 AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV420P10,
352 AV_PIX_FMT_YUV440P10,
353 AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA420P10,
354 AV_PIX_FMT_GRAY9, AV_PIX_FMT_GRAY10,
355 AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV420P12,
356 AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14,
357 AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14,
358 AV_PIX_FMT_YUV444P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV420P16,
359 AV_PIX_FMT_YUVA444P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA420P16,
360 AV_PIX_FMT_GRAY16,
361 AV_PIX_FMT_GRAYF32,
362 AV_PIX_FMT_NONE
363 };
364 static const enum AVPixelFormat rgb_pix_fmts[] = {
365 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
366 AV_PIX_FMT_GBRP9,
367 AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRAP10,
368 AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRAP12,
369 AV_PIX_FMT_GBRP14,
370 AV_PIX_FMT_GBRP16, AV_PIX_FMT_GBRAP16,
371 AV_PIX_FMT_GBRPF32, AV_PIX_FMT_GBRAPF32,
372 AV_PIX_FMT_NONE
373 };
374 ✗ const enum AVPixelFormat *pix_fmts = geq->is_rgb ? rgb_pix_fmts : yuv_pix_fmts;
375
376 ✗ return ff_set_pixel_formats_from_list2(ctx, cfg_in, cfg_out, pix_fmts);
377 }
378
379 ✗ static int geq_config_props(AVFilterLink *inlink)
380 {
381 ✗ GEQContext *geq = inlink->dst->priv;
382 ✗ const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
383
384 ✗ av_assert0(desc);
385
386 ✗ geq->hsub = desc->log2_chroma_w;
387 ✗ geq->vsub = desc->log2_chroma_h;
388 ✗ geq->bps = desc->comp[0].depth;
389 ✗ geq->planes = desc->nb_components;
390 ✗ return 0;
391 }
392
393 typedef struct ThreadData {
394 int height;
395 int width;
396 int plane;
397 int linesize;
398 } ThreadData;
399
400 ✗ static int slice_geq_filter(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
401 {
402 ✗ GEQContext *geq = ctx->priv;
403 ✗ ThreadData *td = arg;
404 ✗ const int height = td->height;
405 ✗ const int width = td->width;
406 ✗ const int plane = td->plane;
407 ✗ const int linesize = td->linesize;
408 ✗ const int slice_start = (height * jobnr) / nb_jobs;
409 ✗ const int slice_end = (height * (jobnr+1)) / nb_jobs;
410 int x, y;
411
412 double values[VAR_VARS_NB];
413 ✗ values[VAR_W] = geq->values[VAR_W];
414 ✗ values[VAR_H] = geq->values[VAR_H];
415 ✗ values[VAR_N] = geq->values[VAR_N];
416 ✗ values[VAR_SW] = geq->values[VAR_SW];
417 ✗ values[VAR_SH] = geq->values[VAR_SH];
418 ✗ values[VAR_T] = geq->values[VAR_T];
419
420 ✗ if (geq->bps == 8) {
421 ✗ uint8_t *ptr = geq->dst + linesize * slice_start;
422 ✗ for (y = slice_start; y < slice_end; y++) {
423 ✗ values[VAR_Y] = y;
424
425 ✗ for (x = 0; x < width; x++) {
426 ✗ values[VAR_X] = x;
427 ✗ ptr[x] = av_expr_eval(geq->e[plane][jobnr], values, geq);
428 }
429 ✗ ptr += linesize;
430 }
431 ✗ } else if (geq->bps <= 16) {
432 ✗ uint16_t *ptr16 = geq->dst16 + (linesize/2) * slice_start;
433 ✗ for (y = slice_start; y < slice_end; y++) {
434 ✗ values[VAR_Y] = y;
435 ✗ for (x = 0; x < width; x++) {
436 ✗ values[VAR_X] = x;
437 ✗ ptr16[x] = av_expr_eval(geq->e[plane][jobnr], values, geq);
438 }
439 ✗ ptr16 += linesize/2;
440 }
441 } else {
442 ✗ float *ptr32 = geq->dst32 + (linesize/4) * slice_start;
443 ✗ for (y = slice_start; y < slice_end; y++) {
444 ✗ values[VAR_Y] = y;
445 ✗ for (x = 0; x < width; x++) {
446 ✗ values[VAR_X] = x;
447 ✗ ptr32[x] = av_expr_eval(geq->e[plane][jobnr], values, geq);
448 }
449 ✗ ptr32 += linesize/4;
450 }
451 }
452
453 ✗ return 0;
454 }
455
456 ✗ static int geq_filter_frame(AVFilterLink *inlink, AVFrame *in)
457 {
458 int plane;
459 ✗ FilterLink *inl = ff_filter_link(inlink);
460 ✗ AVFilterContext *ctx = inlink->dst;
461 ✗ const int nb_threads = FFMIN(MAX_NB_THREADS, ff_filter_get_nb_threads(ctx));
462 ✗ GEQContext *geq = ctx->priv;
463 ✗ AVFilterLink *outlink = inlink->dst->outputs[0];
464 AVFrame *out;
465
466 ✗ geq->values[VAR_N] = inl->frame_count_out,
467 ✗ geq->values[VAR_T] = in->pts == AV_NOPTS_VALUE ? NAN : in->pts * av_q2d(inlink->time_base),
468
469 ✗ geq->picref = in;
470 ✗ out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
471 ✗ if (!out) {
472 ✗ av_frame_free(&in);
473 ✗ return AVERROR(ENOMEM);
474 }
475 ✗ av_frame_copy_props(out, in);
476
477 ✗ for (plane = 0; plane < geq->planes && out->data[plane]; plane++) {
478 ✗ const int width = (plane == 1 || plane == 2) ? AV_CEIL_RSHIFT(inlink->w, geq->hsub) : inlink->w;
479 ✗ const int height = (plane == 1 || plane == 2) ? AV_CEIL_RSHIFT(inlink->h, geq->vsub) : inlink->h;
480 ✗ const int linesize = out->linesize[plane];
481 ThreadData td;
482
483 ✗ geq->dst = out->data[plane];
484 ✗ geq->dst16 = (uint16_t*)out->data[plane];
485 ✗ geq->dst32 = (float*)out->data[plane];
486
487 ✗ geq->values[VAR_W] = width;
488 ✗ geq->values[VAR_H] = height;
489 ✗ geq->values[VAR_SW] = width / (double)inlink->w;
490 ✗ geq->values[VAR_SH] = height / (double)inlink->h;
491
492 ✗ td.width = width;
493 ✗ td.height = height;
494 ✗ td.plane = plane;
495 ✗ td.linesize = linesize;
496
497 ✗ if (geq->needs_sum[plane])
498 ✗ calculate_sums(geq, plane, width, height);
499
500 ✗ ff_filter_execute(ctx, slice_geq_filter, &td,
501 ✗ NULL, FFMIN(height, nb_threads));
502 }
503
504 ✗ av_frame_free(&geq->picref);
505 ✗ return ff_filter_frame(outlink, out);
506 }
507
508 ✗ static av_cold void geq_uninit(AVFilterContext *ctx)
509 {
510 int i;
511 ✗ GEQContext *geq = ctx->priv;
512
513 ✗ for (i = 0; i < NB_PLANES; i++)
514 ✗ for (int j = 0; j < MAX_NB_THREADS; j++)
515 ✗ av_expr_free(geq->e[i][j]);
516 ✗ for (i = 0; i < NB_PLANES; i++)
517 ✗ av_freep(&geq->pixel_sums);
518 ✗ }
519
520 static const AVFilterPad geq_inputs[] = {
521 {
522 .name = "default",
523 .type = AVMEDIA_TYPE_VIDEO,
524 .config_props = geq_config_props,
525 .filter_frame = geq_filter_frame,
526 },
527 };
528
529 const FFFilter ff_vf_geq = {
530 .p.name = "geq",
531 .p.description = NULL_IF_CONFIG_SMALL("Apply generic equation to each pixel."),
532 .p.priv_class = &geq_class,
533 .p.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
534 .priv_size = sizeof(GEQContext),
535 .init = geq_init,
536 .uninit = geq_uninit,
537 FILTER_INPUTS(geq_inputs),
538 FILTER_OUTPUTS(ff_video_default_filterpad),
539 FILTER_QUERY_FUNC2(geq_query_formats),
540 };
541