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