FFmpeg coverage


Directory: ../../../ffmpeg/
File: src/libavfilter/vf_vibrance.c
Date: 2022-12-05 20:26:17
Exec Total Coverage
Lines: 0 214 0.0%
Functions: 0 7 0.0%
Branches: 0 114 0.0%

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1 /*
2 * Copyright (c) 2018 Paul B Mahol
3 *
4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
10 *
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
15 *
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
21 #include "libavutil/opt.h"
22 #include "libavutil/imgutils.h"
23 #include "avfilter.h"
24 #include "drawutils.h"
25 #include "formats.h"
26 #include "internal.h"
27 #include "video.h"
28
29 #define R 0
30 #define G 1
31 #define B 2
32
33 typedef struct VibranceContext {
34 const AVClass *class;
35
36 float intensity;
37 float balance[3];
38 float lcoeffs[3];
39 int alternate;
40
41 int step;
42 int depth;
43 uint8_t rgba_map[4];
44
45 int (*do_slice)(AVFilterContext *s, void *arg,
46 int jobnr, int nb_jobs);
47 } VibranceContext;
48
49 static inline float lerpf(float v0, float v1, float f)
50 {
51 return v0 + (v1 - v0) * f;
52 }
53
54 static int vibrance_slice8(AVFilterContext *avctx, void *arg, int jobnr, int nb_jobs)
55 {
56 VibranceContext *s = avctx->priv;
57 AVFrame *frame = arg;
58 const int width = frame->width;
59 const int height = frame->height;
60 const float scale = 1.f / 255.f;
61 const float gc = s->lcoeffs[0];
62 const float bc = s->lcoeffs[1];
63 const float rc = s->lcoeffs[2];
64 const float intensity = s->intensity;
65 const float alternate = s->alternate ? 1.f : -1.f;
66 const float gintensity = intensity * s->balance[0];
67 const float bintensity = intensity * s->balance[1];
68 const float rintensity = intensity * s->balance[2];
69 const float sgintensity = alternate * FFSIGN(gintensity);
70 const float sbintensity = alternate * FFSIGN(bintensity);
71 const float srintensity = alternate * FFSIGN(rintensity);
72 const int slice_start = (height * jobnr) / nb_jobs;
73 const int slice_end = (height * (jobnr + 1)) / nb_jobs;
74 const int glinesize = frame->linesize[0];
75 const int blinesize = frame->linesize[1];
76 const int rlinesize = frame->linesize[2];
77 uint8_t *gptr = frame->data[0] + slice_start * glinesize;
78 uint8_t *bptr = frame->data[1] + slice_start * blinesize;
79 uint8_t *rptr = frame->data[2] + slice_start * rlinesize;
80
81 for (int y = slice_start; y < slice_end; y++) {
82 for (int x = 0; x < width; x++) {
83 float g = gptr[x] * scale;
84 float b = bptr[x] * scale;
85 float r = rptr[x] * scale;
86 float max_color = FFMAX3(r, g, b);
87 float min_color = FFMIN3(r, g, b);
88 float color_saturation = max_color - min_color;
89 float luma = g * gc + r * rc + b * bc;
90 const float cg = 1.f + gintensity * (1.f - sgintensity * color_saturation);
91 const float cb = 1.f + bintensity * (1.f - sbintensity * color_saturation);
92 const float cr = 1.f + rintensity * (1.f - srintensity * color_saturation);
93
94 g = lerpf(luma, g, cg);
95 b = lerpf(luma, b, cb);
96 r = lerpf(luma, r, cr);
97
98 gptr[x] = av_clip_uint8(g * 255.f);
99 bptr[x] = av_clip_uint8(b * 255.f);
100 rptr[x] = av_clip_uint8(r * 255.f);
101 }
102
103 gptr += glinesize;
104 bptr += blinesize;
105 rptr += rlinesize;
106 }
107
108 return 0;
109 }
110
111 static int vibrance_slice16(AVFilterContext *avctx, void *arg, int jobnr, int nb_jobs)
112 {
113 VibranceContext *s = avctx->priv;
114 AVFrame *frame = arg;
115 const int depth = s->depth;
116 const float max = (1 << depth) - 1;
117 const float scale = 1.f / max;
118 const float gc = s->lcoeffs[0];
119 const float bc = s->lcoeffs[1];
120 const float rc = s->lcoeffs[2];
121 const int width = frame->width;
122 const int height = frame->height;
123 const float intensity = s->intensity;
124 const float alternate = s->alternate ? 1.f : -1.f;
125 const float gintensity = intensity * s->balance[0];
126 const float bintensity = intensity * s->balance[1];
127 const float rintensity = intensity * s->balance[2];
128 const float sgintensity = alternate * FFSIGN(gintensity);
129 const float sbintensity = alternate * FFSIGN(bintensity);
130 const float srintensity = alternate * FFSIGN(rintensity);
131 const int slice_start = (height * jobnr) / nb_jobs;
132 const int slice_end = (height * (jobnr + 1)) / nb_jobs;
133 const int glinesize = frame->linesize[0] / 2;
134 const int blinesize = frame->linesize[1] / 2;
135 const int rlinesize = frame->linesize[2] / 2;
136 uint16_t *gptr = (uint16_t *)frame->data[0] + slice_start * glinesize;
137 uint16_t *bptr = (uint16_t *)frame->data[1] + slice_start * blinesize;
138 uint16_t *rptr = (uint16_t *)frame->data[2] + slice_start * rlinesize;
139
140 for (int y = slice_start; y < slice_end; y++) {
141 for (int x = 0; x < width; x++) {
142 float g = gptr[x] * scale;
143 float b = bptr[x] * scale;
144 float r = rptr[x] * scale;
145 float max_color = FFMAX3(r, g, b);
146 float min_color = FFMIN3(r, g, b);
147 float color_saturation = max_color - min_color;
148 float luma = g * gc + r * rc + b * bc;
149 const float cg = 1.f + gintensity * (1.f - sgintensity * color_saturation);
150 const float cb = 1.f + bintensity * (1.f - sbintensity * color_saturation);
151 const float cr = 1.f + rintensity * (1.f - srintensity * color_saturation);
152
153 g = lerpf(luma, g, cg);
154 b = lerpf(luma, b, cb);
155 r = lerpf(luma, r, cr);
156
157 gptr[x] = av_clip_uintp2_c(g * max, depth);
158 bptr[x] = av_clip_uintp2_c(b * max, depth);
159 rptr[x] = av_clip_uintp2_c(r * max, depth);
160 }
161
162 gptr += glinesize;
163 bptr += blinesize;
164 rptr += rlinesize;
165 }
166
167 return 0;
168 }
169
170 static int vibrance_slice8p(AVFilterContext *avctx, void *arg, int jobnr, int nb_jobs)
171 {
172 VibranceContext *s = avctx->priv;
173 AVFrame *frame = arg;
174 const int step = s->step;
175 const int width = frame->width;
176 const int height = frame->height;
177 const float scale = 1.f / 255.f;
178 const float gc = s->lcoeffs[0];
179 const float bc = s->lcoeffs[1];
180 const float rc = s->lcoeffs[2];
181 const uint8_t roffset = s->rgba_map[R];
182 const uint8_t goffset = s->rgba_map[G];
183 const uint8_t boffset = s->rgba_map[B];
184 const float intensity = s->intensity;
185 const float alternate = s->alternate ? 1.f : -1.f;
186 const float gintensity = intensity * s->balance[0];
187 const float bintensity = intensity * s->balance[1];
188 const float rintensity = intensity * s->balance[2];
189 const float sgintensity = alternate * FFSIGN(gintensity);
190 const float sbintensity = alternate * FFSIGN(bintensity);
191 const float srintensity = alternate * FFSIGN(rintensity);
192 const int slice_start = (height * jobnr) / nb_jobs;
193 const int slice_end = (height * (jobnr + 1)) / nb_jobs;
194 const int linesize = frame->linesize[0];
195 uint8_t *ptr = frame->data[0] + slice_start * linesize;
196
197 for (int y = slice_start; y < slice_end; y++) {
198 for (int x = 0; x < width; x++) {
199 float g = ptr[x * step + goffset] * scale;
200 float b = ptr[x * step + boffset] * scale;
201 float r = ptr[x * step + roffset] * scale;
202 float max_color = FFMAX3(r, g, b);
203 float min_color = FFMIN3(r, g, b);
204 float color_saturation = max_color - min_color;
205 float luma = g * gc + r * rc + b * bc;
206 const float cg = 1.f + gintensity * (1.f - sgintensity * color_saturation);
207 const float cb = 1.f + bintensity * (1.f - sbintensity * color_saturation);
208 const float cr = 1.f + rintensity * (1.f - srintensity * color_saturation);
209
210 g = lerpf(luma, g, cg);
211 b = lerpf(luma, b, cb);
212 r = lerpf(luma, r, cr);
213
214 ptr[x * step + goffset] = av_clip_uint8(g * 255.f);
215 ptr[x * step + boffset] = av_clip_uint8(b * 255.f);
216 ptr[x * step + roffset] = av_clip_uint8(r * 255.f);
217 }
218
219 ptr += linesize;
220 }
221
222 return 0;
223 }
224
225 static int vibrance_slice16p(AVFilterContext *avctx, void *arg, int jobnr, int nb_jobs)
226 {
227 VibranceContext *s = avctx->priv;
228 AVFrame *frame = arg;
229 const int step = s->step;
230 const int depth = s->depth;
231 const float max = (1 << depth) - 1;
232 const float scale = 1.f / max;
233 const float gc = s->lcoeffs[0];
234 const float bc = s->lcoeffs[1];
235 const float rc = s->lcoeffs[2];
236 const uint8_t roffset = s->rgba_map[R];
237 const uint8_t goffset = s->rgba_map[G];
238 const uint8_t boffset = s->rgba_map[B];
239 const int width = frame->width;
240 const int height = frame->height;
241 const float intensity = s->intensity;
242 const float alternate = s->alternate ? 1.f : -1.f;
243 const float gintensity = intensity * s->balance[0];
244 const float bintensity = intensity * s->balance[1];
245 const float rintensity = intensity * s->balance[2];
246 const float sgintensity = alternate * FFSIGN(gintensity);
247 const float sbintensity = alternate * FFSIGN(bintensity);
248 const float srintensity = alternate * FFSIGN(rintensity);
249 const int slice_start = (height * jobnr) / nb_jobs;
250 const int slice_end = (height * (jobnr + 1)) / nb_jobs;
251 const int linesize = frame->linesize[0] / 2;
252 uint16_t *ptr = (uint16_t *)frame->data[0] + slice_start * linesize;
253
254 for (int y = slice_start; y < slice_end; y++) {
255 for (int x = 0; x < width; x++) {
256 float g = ptr[x * step + goffset] * scale;
257 float b = ptr[x * step + boffset] * scale;
258 float r = ptr[x * step + roffset] * scale;
259 float max_color = FFMAX3(r, g, b);
260 float min_color = FFMIN3(r, g, b);
261 float color_saturation = max_color - min_color;
262 float luma = g * gc + r * rc + b * bc;
263 const float cg = 1.f + gintensity * (1.f - sgintensity * color_saturation);
264 const float cb = 1.f + bintensity * (1.f - sbintensity * color_saturation);
265 const float cr = 1.f + rintensity * (1.f - srintensity * color_saturation);
266
267 g = lerpf(luma, g, cg);
268 b = lerpf(luma, b, cb);
269 r = lerpf(luma, r, cr);
270
271 ptr[x * step + goffset] = av_clip_uintp2_c(g * max, depth);
272 ptr[x * step + boffset] = av_clip_uintp2_c(b * max, depth);
273 ptr[x * step + roffset] = av_clip_uintp2_c(r * max, depth);
274 }
275
276 ptr += linesize;
277 }
278
279 return 0;
280 }
281
282 static int filter_frame(AVFilterLink *link, AVFrame *frame)
283 {
284 AVFilterContext *avctx = link->dst;
285 VibranceContext *s = avctx->priv;
286 int res;
287
288 if (res = ff_filter_execute(avctx, s->do_slice, frame, NULL,
289 FFMIN(frame->height, ff_filter_get_nb_threads(avctx))))
290 return res;
291
292 return ff_filter_frame(avctx->outputs[0], frame);
293 }
294
295 static const enum AVPixelFormat pixel_fmts[] = {
296 AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
297 AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA,
298 AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR,
299 AV_PIX_FMT_0RGB, AV_PIX_FMT_0BGR,
300 AV_PIX_FMT_RGB0, AV_PIX_FMT_BGR0,
301 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
302 AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRP12,
303 AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
304 AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
305 AV_PIX_FMT_RGB48, AV_PIX_FMT_BGR48,
306 AV_PIX_FMT_RGBA64, AV_PIX_FMT_BGRA64,
307 AV_PIX_FMT_NONE
308 };
309
310 static av_cold int config_input(AVFilterLink *inlink)
311 {
312 AVFilterContext *avctx = inlink->dst;
313 VibranceContext *s = avctx->priv;
314 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(inlink->format);
315 int planar = desc->flags & AV_PIX_FMT_FLAG_PLANAR;
316
317 s->step = desc->nb_components;
318 if (inlink->format == AV_PIX_FMT_RGB0 ||
319 inlink->format == AV_PIX_FMT_0RGB ||
320 inlink->format == AV_PIX_FMT_BGR0 ||
321 inlink->format == AV_PIX_FMT_0BGR)
322 s->step = 4;
323
324 s->depth = desc->comp[0].depth;
325 s->do_slice = s->depth <= 8 ? vibrance_slice8 : vibrance_slice16;
326 if (!planar)
327 s->do_slice = s->depth <= 8 ? vibrance_slice8p : vibrance_slice16p;
328
329 ff_fill_rgba_map(s->rgba_map, inlink->format);
330
331 return 0;
332 }
333
334 static const AVFilterPad vibrance_inputs[] = {
335 {
336 .name = "default",
337 .type = AVMEDIA_TYPE_VIDEO,
338 .flags = AVFILTERPAD_FLAG_NEEDS_WRITABLE,
339 .filter_frame = filter_frame,
340 .config_props = config_input,
341 },
342 };
343
344 static const AVFilterPad vibrance_outputs[] = {
345 {
346 .name = "default",
347 .type = AVMEDIA_TYPE_VIDEO,
348 },
349 };
350
351 #define OFFSET(x) offsetof(VibranceContext, x)
352 #define VF AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
353
354 static const AVOption vibrance_options[] = {
355 { "intensity", "set the intensity value", OFFSET(intensity), AV_OPT_TYPE_FLOAT, {.dbl=0}, -2, 2, VF },
356 { "rbal", "set the red balance value", OFFSET(balance[2]), AV_OPT_TYPE_FLOAT, {.dbl=1}, -10, 10, VF },
357 { "gbal", "set the green balance value", OFFSET(balance[0]), AV_OPT_TYPE_FLOAT, {.dbl=1}, -10, 10, VF },
358 { "bbal", "set the blue balance value", OFFSET(balance[1]), AV_OPT_TYPE_FLOAT, {.dbl=1}, -10, 10, VF },
359 { "rlum", "set the red luma coefficient", OFFSET(lcoeffs[2]), AV_OPT_TYPE_FLOAT, {.dbl=0.072186}, 0, 1, VF },
360 { "glum", "set the green luma coefficient", OFFSET(lcoeffs[0]), AV_OPT_TYPE_FLOAT, {.dbl=0.715158}, 0, 1, VF },
361 { "blum", "set the blue luma coefficient", OFFSET(lcoeffs[1]), AV_OPT_TYPE_FLOAT, {.dbl=0.212656}, 0, 1, VF },
362 { "alternate", "use alternate colors", OFFSET(alternate), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, VF },
363 { NULL }
364 };
365
366 AVFILTER_DEFINE_CLASS(vibrance);
367
368 const AVFilter ff_vf_vibrance = {
369 .name = "vibrance",
370 .description = NULL_IF_CONFIG_SMALL("Boost or alter saturation."),
371 .priv_size = sizeof(VibranceContext),
372 .priv_class = &vibrance_class,
373 FILTER_INPUTS(vibrance_inputs),
374 FILTER_OUTPUTS(vibrance_outputs),
375 FILTER_PIXFMTS_ARRAY(pixel_fmts),
376 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC | AVFILTER_FLAG_SLICE_THREADS,
377 .process_command = ff_filter_process_command,
378 };
379