1 /*
2 * Copyright (c) 2010 Brandon Mintern
3 * Copyright (c) 2007 Bobby Bingham
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 * video fade filter
25 * based heavily on vf_negate.c by Bobby Bingham
26 */
27
28 #include "libavutil/avassert.h"
29 #include "libavutil/avstring.h"
30 #include "libavutil/common.h"
31 #include "libavutil/eval.h"
32 #include "libavutil/opt.h"
33 #include "libavutil/pixdesc.h"
34 #include "avfilter.h"
35 #include "drawutils.h"
36 #include "formats.h"
37 #include "internal.h"
38 #include "video.h"
39
40 #define R 0
41 #define G 1
42 #define B 2
43 #define A 3
44
45 #define Y 0
46 #define U 1
47 #define V 2
48
49 #define FADE_IN 0
50 #define FADE_OUT 1
51
52 typedef struct FadeContext {
53 const AVClass *class;
54 int type;
55 int factor, fade_per_frame;
56 int start_frame, nb_frames;
57 int hsub, vsub, bpp, depth;
58 unsigned int black_level, black_level_scaled;
59 uint8_t is_rgb;
60 uint8_t is_packed_rgb;
61 uint8_t rgba_map[4];
62 int alpha;
63 int is_planar;
64 uint64_t start_time, duration;
65 uint64_t start_time_pts, duration_pts;
66 enum {VF_FADE_WAITING=0, VF_FADE_FADING, VF_FADE_DONE} fade_state;
67 uint8_t color_rgba[4]; ///< fade color
68 int black_fade; ///< if color_rgba is black
69 int (*filter_slice_luma)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
70 int (*filter_slice_chroma)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
71 int (*filter_slice_alpha)(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs);
72 } FadeContext;
73
init(AVFilterContext * ctx)74 static av_cold int init(AVFilterContext *ctx)
75 {
76 FadeContext *s = ctx->priv;
77
78 s->fade_per_frame = (1 << 16) / s->nb_frames;
79 s->fade_state = VF_FADE_WAITING;
80
81 if (s->duration != 0) {
82 // If duration (seconds) is non-zero, assume that we are not fading based on frames
83 s->nb_frames = 0; // Mostly to clean up logging
84 }
85
86 // Choose what to log. If both time-based and frame-based options, both lines will be in the log
87 if (s->start_frame || s->nb_frames) {
88 av_log(ctx, AV_LOG_VERBOSE,
89 "type:%s start_frame:%d nb_frames:%d alpha:%d\n",
90 s->type == FADE_IN ? "in" : "out", s->start_frame,
91 s->nb_frames,s->alpha);
92 }
93 if (s->start_time || s->duration) {
94 av_log(ctx, AV_LOG_VERBOSE,
95 "type:%s start_time:%f duration:%f alpha:%d\n",
96 s->type == FADE_IN ? "in" : "out", (s->start_time / (double)AV_TIME_BASE),
97 (s->duration / (double)AV_TIME_BASE),s->alpha);
98 }
99
100 s->black_fade = !memcmp(s->color_rgba, "\x00\x00\x00\xff", 4);
101 return 0;
102 }
103
query_formats(AVFilterContext * ctx)104 static int query_formats(AVFilterContext *ctx)
105 {
106 const FadeContext *s = ctx->priv;
107 static const enum AVPixelFormat pix_fmts[] = {
108 AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P,
109 AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
110 AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ420P,
111 AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUVJ440P,
112 AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
113 AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
114 AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR,
115 AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA,
116 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP,
117 AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
118 AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
119 AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
120 AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
121 AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
122 AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
123 AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
124 AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12,
125 AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
126 AV_PIX_FMT_NONE
127 };
128 static const enum AVPixelFormat pix_fmts_rgb[] = {
129 AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
130 AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR,
131 AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA,
132 AV_PIX_FMT_GBRP,
133 AV_PIX_FMT_NONE
134 };
135 static const enum AVPixelFormat pix_fmts_alpha[] = {
136 AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
137 AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
138 AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
139 AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12,
140 AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
141 AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR,
142 AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA,
143 AV_PIX_FMT_GBRAP,
144 AV_PIX_FMT_NONE
145 };
146 static const enum AVPixelFormat pix_fmts_rgba[] = {
147 AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR,
148 AV_PIX_FMT_RGBA, AV_PIX_FMT_BGRA,
149 AV_PIX_FMT_GBRAP,
150 AV_PIX_FMT_NONE
151 };
152 AVFilterFormats *fmts_list;
153
154 if (s->alpha) {
155 if (s->black_fade)
156 fmts_list = ff_make_format_list(pix_fmts_alpha);
157 else
158 fmts_list = ff_make_format_list(pix_fmts_rgba);
159 } else {
160 if (s->black_fade)
161 fmts_list = ff_make_format_list(pix_fmts);
162 else
163 fmts_list = ff_make_format_list(pix_fmts_rgb);
164 }
165 if (!fmts_list)
166 return AVERROR(ENOMEM);
167 return ff_set_common_formats(ctx, fmts_list);
168 }
169
170 const static enum AVPixelFormat studio_level_pix_fmts[] = {
171 AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P,
172 AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
173 AV_PIX_FMT_YUV440P,
174 AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
175 AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
176 AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
177 AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14,
178 AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
179 AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9,
180 AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
181 AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12,
182 AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
183 AV_PIX_FMT_NONE
184 };
185
filter_rgb(FadeContext * s,const AVFrame * frame,int slice_start,int slice_end,int do_alpha,int step)186 static av_always_inline void filter_rgb(FadeContext *s, const AVFrame *frame,
187 int slice_start, int slice_end,
188 int do_alpha, int step)
189 {
190 int i, j;
191 const uint8_t r_idx = s->rgba_map[R];
192 const uint8_t g_idx = s->rgba_map[G];
193 const uint8_t b_idx = s->rgba_map[B];
194 const uint8_t a_idx = s->rgba_map[A];
195 const uint8_t *c = s->color_rgba;
196
197 for (i = slice_start; i < slice_end; i++) {
198 uint8_t *p = frame->data[0] + i * frame->linesize[0];
199 for (j = 0; j < frame->width; j++) {
200 #define INTERP(c_name, c_idx) av_clip_uint8(((c[c_idx]<<16) + ((int)p[c_name] - (int)c[c_idx]) * s->factor + (1<<15)) >> 16)
201 p[r_idx] = INTERP(r_idx, 0);
202 p[g_idx] = INTERP(g_idx, 1);
203 p[b_idx] = INTERP(b_idx, 2);
204 if (do_alpha)
205 p[a_idx] = INTERP(a_idx, 3);
206 p += step;
207 }
208 }
209 }
210
filter_rgb_planar(FadeContext * s,const AVFrame * frame,int slice_start,int slice_end,int do_alpha)211 static av_always_inline void filter_rgb_planar(FadeContext *s, const AVFrame *frame,
212 int slice_start, int slice_end,
213 int do_alpha)
214 {
215 int i, j;
216 const uint8_t *c = s->color_rgba;
217
218 for (i = slice_start; i < slice_end; i++) {
219 uint8_t *pg = frame->data[0] + i * frame->linesize[0];
220 uint8_t *pb = frame->data[1] + i * frame->linesize[1];
221 uint8_t *pr = frame->data[2] + i * frame->linesize[2];
222 uint8_t *pa = frame->data[3] + i * frame->linesize[3];
223 for (j = 0; j < frame->width; j++) {
224 #define INTERPP(c_name, c_idx) av_clip_uint8(((c[c_idx]<<16) + ((int)c_name - (int)c[c_idx]) * s->factor + (1<<15)) >> 16)
225 pr[j] = INTERPP(pr[j], 0);
226 pg[j] = INTERPP(pg[j], 1);
227 pb[j] = INTERPP(pb[j], 2);
228 if (do_alpha)
229 pa[j] = INTERPP(pa[j], 3);
230 }
231 }
232 }
233
filter_slice_rgb(AVFilterContext * ctx,void * arg,int jobnr,int nb_jobs)234 static int filter_slice_rgb(AVFilterContext *ctx, void *arg, int jobnr,
235 int nb_jobs)
236 {
237 FadeContext *s = ctx->priv;
238 AVFrame *frame = arg;
239 int slice_start = (frame->height * jobnr ) / nb_jobs;
240 int slice_end = (frame->height * (jobnr+1)) / nb_jobs;
241
242 if (s->is_planar && s->alpha)
243 filter_rgb_planar(s, frame, slice_start, slice_end, 1);
244 else if (s->is_planar)
245 filter_rgb_planar(s, frame, slice_start, slice_end, 0);
246 else if (s->alpha) filter_rgb(s, frame, slice_start, slice_end, 1, 4);
247 else if (s->bpp == 3) filter_rgb(s, frame, slice_start, slice_end, 0, 3);
248 else if (s->bpp == 4) filter_rgb(s, frame, slice_start, slice_end, 0, 4);
249 else av_assert0(0);
250
251 return 0;
252 }
253
filter_slice_luma(AVFilterContext * ctx,void * arg,int jobnr,int nb_jobs)254 static int filter_slice_luma(AVFilterContext *ctx, void *arg, int jobnr,
255 int nb_jobs)
256 {
257 FadeContext *s = ctx->priv;
258 AVFrame *frame = arg;
259 int slice_start = (frame->height * jobnr ) / nb_jobs;
260 int slice_end = (frame->height * (jobnr+1)) / nb_jobs;
261 int i, j;
262
263 for (int k = 0; k < 1 + 2 * (s->is_planar && s->is_rgb); k++) {
264 for (i = slice_start; i < slice_end; i++) {
265 uint8_t *p = frame->data[k] + i * frame->linesize[k];
266 for (j = 0; j < frame->width * s->bpp; j++) {
267 /* s->factor is using 16 lower-order bits for decimal
268 * places. 32768 = 1 << 15, it is an integer representation
269 * of 0.5 and is for rounding. */
270 *p = ((*p - s->black_level) * s->factor + s->black_level_scaled) >> 16;
271 p++;
272 }
273 }
274 }
275
276 return 0;
277 }
278
filter_slice_luma16(AVFilterContext * ctx,void * arg,int jobnr,int nb_jobs)279 static int filter_slice_luma16(AVFilterContext *ctx, void *arg, int jobnr,
280 int nb_jobs)
281 {
282 FadeContext *s = ctx->priv;
283 AVFrame *frame = arg;
284 int slice_start = (frame->height * jobnr ) / nb_jobs;
285 int slice_end = (frame->height * (jobnr+1)) / nb_jobs;
286 int i, j;
287
288 for (int k = 0; k < 1 + 2 * (s->is_planar && s->is_rgb); k++) {
289 for (i = slice_start; i < slice_end; i++) {
290 uint16_t *p = (uint16_t *)(frame->data[k] + i * frame->linesize[k]);
291 for (j = 0; j < frame->width * s->bpp; j++) {
292 /* s->factor is using 16 lower-order bits for decimal
293 * places. 32768 = 1 << 15, it is an integer representation
294 * of 0.5 and is for rounding. */
295 *p = ((*p - s->black_level) * s->factor + s->black_level_scaled) >> 16;
296 p++;
297 }
298 }
299 }
300
301 return 0;
302 }
303
filter_slice_chroma(AVFilterContext * ctx,void * arg,int jobnr,int nb_jobs)304 static int filter_slice_chroma(AVFilterContext *ctx, void *arg, int jobnr,
305 int nb_jobs)
306 {
307 FadeContext *s = ctx->priv;
308 AVFrame *frame = arg;
309 int i, j, plane;
310 const int width = AV_CEIL_RSHIFT(frame->width, s->hsub);
311 const int height= AV_CEIL_RSHIFT(frame->height, s->vsub);
312 int slice_start = (height * jobnr ) / nb_jobs;
313 int slice_end = FFMIN(((height * (jobnr+1)) / nb_jobs), frame->height);
314
315 for (plane = 1; plane < 3; plane++) {
316 for (i = slice_start; i < slice_end; i++) {
317 uint8_t *p = frame->data[plane] + i * frame->linesize[plane];
318 for (j = 0; j < width; j++) {
319 /* 8421367 = ((128 << 1) + 1) << 15. It is an integer
320 * representation of 128.5. The .5 is for rounding
321 * purposes. */
322 *p = ((*p - 128) * s->factor + 8421367) >> 16;
323 p++;
324 }
325 }
326 }
327
328 return 0;
329 }
330
filter_slice_chroma16(AVFilterContext * ctx,void * arg,int jobnr,int nb_jobs)331 static int filter_slice_chroma16(AVFilterContext *ctx, void *arg, int jobnr,
332 int nb_jobs)
333 {
334 FadeContext *s = ctx->priv;
335 AVFrame *frame = arg;
336 int i, j, plane;
337 const int width = AV_CEIL_RSHIFT(frame->width, s->hsub);
338 const int height= AV_CEIL_RSHIFT(frame->height, s->vsub);
339 const int mid = 1 << (s->depth - 1);
340 const int add = ((mid << 1) + 1) << 15;
341 int slice_start = (height * jobnr ) / nb_jobs;
342 int slice_end = FFMIN(((height * (jobnr+1)) / nb_jobs), frame->height);
343
344 for (plane = 1; plane < 3; plane++) {
345 for (i = slice_start; i < slice_end; i++) {
346 uint16_t *p = (uint16_t *)(frame->data[plane] + i * frame->linesize[plane]);
347 for (j = 0; j < width; j++) {
348 *p = ((*p - mid) * s->factor + add) >> 16;
349 p++;
350 }
351 }
352 }
353
354 return 0;
355 }
356
filter_slice_alpha(AVFilterContext * ctx,void * arg,int jobnr,int nb_jobs)357 static int filter_slice_alpha(AVFilterContext *ctx, void *arg, int jobnr,
358 int nb_jobs)
359 {
360 FadeContext *s = ctx->priv;
361 AVFrame *frame = arg;
362 int plane = s->is_packed_rgb ? 0 : A;
363 int slice_start = (frame->height * jobnr ) / nb_jobs;
364 int slice_end = (frame->height * (jobnr+1)) / nb_jobs;
365 int i, j;
366
367 for (i = slice_start; i < slice_end; i++) {
368 uint8_t *p = frame->data[plane] + i * frame->linesize[plane] + s->is_packed_rgb*s->rgba_map[A];
369 int step = s->is_packed_rgb ? 4 : 1;
370 for (j = 0; j < frame->width; j++) {
371 /* s->factor is using 16 lower-order bits for decimal
372 * places. 32768 = 1 << 15, it is an integer representation
373 * of 0.5 and is for rounding. */
374 *p = ((*p - s->black_level) * s->factor + s->black_level_scaled) >> 16;
375 p += step;
376 }
377 }
378
379 return 0;
380 }
381
filter_slice_alpha16(AVFilterContext * ctx,void * arg,int jobnr,int nb_jobs)382 static int filter_slice_alpha16(AVFilterContext *ctx, void *arg, int jobnr,
383 int nb_jobs)
384 {
385 FadeContext *s = ctx->priv;
386 AVFrame *frame = arg;
387 int plane = s->is_packed_rgb ? 0 : A;
388 int slice_start = (frame->height * jobnr ) / nb_jobs;
389 int slice_end = (frame->height * (jobnr+1)) / nb_jobs;
390 int i, j;
391
392 for (i = slice_start; i < slice_end; i++) {
393 uint16_t *p = (uint16_t *)(frame->data[plane] + i * frame->linesize[plane]) + s->is_packed_rgb*s->rgba_map[A];
394 int step = s->is_packed_rgb ? 4 : 1;
395 for (j = 0; j < frame->width; j++) {
396 /* s->factor is using 16 lower-order bits for decimal
397 * places. 32768 = 1 << 15, it is an integer representation
398 * of 0.5 and is for rounding. */
399 *p = ((*p - s->black_level) * s->factor + s->black_level_scaled) >> 16;
400 p += step;
401 }
402 }
403
404 return 0;
405 }
406
config_input(AVFilterLink * inlink)407 static int config_input(AVFilterLink *inlink)
408 {
409 FadeContext *s = inlink->dst->priv;
410 const AVPixFmtDescriptor *pixdesc = av_pix_fmt_desc_get(inlink->format);
411
412 s->hsub = pixdesc->log2_chroma_w;
413 s->vsub = pixdesc->log2_chroma_h;
414
415 ff_fill_rgba_map(s->rgba_map, inlink->format);
416
417 s->depth = pixdesc->comp[0].depth;
418 s->bpp = pixdesc->flags & AV_PIX_FMT_FLAG_PLANAR ?
419 1 :
420 av_get_bits_per_pixel(pixdesc) >> 3;
421 s->alpha &= !!(pixdesc->flags & AV_PIX_FMT_FLAG_ALPHA);
422 s->is_planar = pixdesc->flags & AV_PIX_FMT_FLAG_PLANAR;
423 s->is_rgb = pixdesc->flags & AV_PIX_FMT_FLAG_RGB;
424 s->is_packed_rgb = !s->is_planar && s->is_rgb;
425
426 if (s->duration)
427 s->duration_pts = av_rescale_q(s->duration, AV_TIME_BASE_Q, inlink->time_base);
428 if (s->start_time)
429 s->start_time_pts = av_rescale_q(s->start_time, AV_TIME_BASE_Q, inlink->time_base);
430
431 /* use CCIR601/709 black level for studio-level pixel non-alpha components */
432 s->black_level =
433 ff_fmt_is_in(inlink->format, studio_level_pix_fmts) && !s->alpha ? 16 * (1 << (s->depth - 8)): 0;
434 /* 32768 = 1 << 15, it is an integer representation
435 * of 0.5 and is for rounding. */
436 s->black_level_scaled = (s->black_level << 16) + 32768;
437
438 s->filter_slice_luma = s->depth <= 8 ? filter_slice_luma : filter_slice_luma16;
439 s->filter_slice_chroma = s->depth <= 8 ? filter_slice_chroma : filter_slice_chroma16;
440 s->filter_slice_alpha = s->depth <= 8 ? filter_slice_alpha : filter_slice_alpha16;
441
442 return 0;
443 }
444
filter_frame(AVFilterLink * inlink,AVFrame * frame)445 static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
446 {
447 AVFilterContext *ctx = inlink->dst;
448 FadeContext *s = ctx->priv;
449
450 // Calculate Fade assuming this is a Fade In
451 if (s->fade_state == VF_FADE_WAITING) {
452 s->factor=0;
453 if (frame->pts >= s->start_time_pts
454 && inlink->frame_count_out >= s->start_frame) {
455 // Time to start fading
456 s->fade_state = VF_FADE_FADING;
457
458 // Save start time in case we are starting based on frames and fading based on time
459 if (s->start_time_pts == 0 && s->start_frame != 0) {
460 s->start_time_pts = frame->pts;
461 }
462
463 // Save start frame in case we are starting based on time and fading based on frames
464 if (s->start_time_pts != 0 && s->start_frame == 0) {
465 s->start_frame = inlink->frame_count_out;
466 }
467 }
468 }
469 if (s->fade_state == VF_FADE_FADING) {
470 if (s->duration_pts == 0) {
471 // Fading based on frame count
472 s->factor = (inlink->frame_count_out - s->start_frame) * s->fade_per_frame;
473 if (inlink->frame_count_out > s->start_frame + s->nb_frames) {
474 s->fade_state = VF_FADE_DONE;
475 }
476
477 } else {
478 // Fading based on duration
479 s->factor = (frame->pts - s->start_time_pts) * UINT16_MAX / s->duration_pts;
480 if (frame->pts > s->start_time_pts + s->duration_pts) {
481 s->fade_state = VF_FADE_DONE;
482 }
483 }
484 }
485 if (s->fade_state == VF_FADE_DONE) {
486 s->factor=UINT16_MAX;
487 }
488
489 s->factor = av_clip_uint16(s->factor);
490
491 // Invert fade_factor if Fading Out
492 if (s->type == FADE_OUT) {
493 s->factor=UINT16_MAX-s->factor;
494 }
495
496 if (s->factor < UINT16_MAX) {
497 if (s->alpha) {
498 ctx->internal->execute(ctx, s->filter_slice_alpha, frame, NULL,
499 FFMIN(frame->height, ff_filter_get_nb_threads(ctx)));
500 } else if (s->is_rgb && !s->black_fade) {
501 ctx->internal->execute(ctx, filter_slice_rgb, frame, NULL,
502 FFMIN(frame->height, ff_filter_get_nb_threads(ctx)));
503 } else {
504 /* luma, or rgb plane in case of black */
505 ctx->internal->execute(ctx, s->filter_slice_luma, frame, NULL,
506 FFMIN(frame->height, ff_filter_get_nb_threads(ctx)));
507
508 if (frame->data[1] && frame->data[2] && !s->is_rgb) {
509 /* chroma planes */
510 ctx->internal->execute(ctx, s->filter_slice_chroma, frame, NULL,
511 FFMIN(frame->height, ff_filter_get_nb_threads(ctx)));
512 }
513 }
514 }
515
516 return ff_filter_frame(inlink->dst->outputs[0], frame);
517 }
518
519
520 #define OFFSET(x) offsetof(FadeContext, x)
521 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
522
523 static const AVOption fade_options[] = {
524 { "type", "set the fade direction", OFFSET(type), AV_OPT_TYPE_INT, { .i64 = FADE_IN }, FADE_IN, FADE_OUT, FLAGS, "type" },
525 { "t", "set the fade direction", OFFSET(type), AV_OPT_TYPE_INT, { .i64 = FADE_IN }, FADE_IN, FADE_OUT, FLAGS, "type" },
526 { "in", "fade-in", 0, AV_OPT_TYPE_CONST, { .i64 = FADE_IN }, .flags = FLAGS, .unit = "type" },
527 { "out", "fade-out", 0, AV_OPT_TYPE_CONST, { .i64 = FADE_OUT }, .flags = FLAGS, .unit = "type" },
528 { "start_frame", "Number of the first frame to which to apply the effect.",
529 OFFSET(start_frame), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS },
530 { "s", "Number of the first frame to which to apply the effect.",
531 OFFSET(start_frame), AV_OPT_TYPE_INT, { .i64 = 0 }, 0, INT_MAX, FLAGS },
532 { "nb_frames", "Number of frames to which the effect should be applied.",
533 OFFSET(nb_frames), AV_OPT_TYPE_INT, { .i64 = 25 }, 1, INT_MAX, FLAGS },
534 { "n", "Number of frames to which the effect should be applied.",
535 OFFSET(nb_frames), AV_OPT_TYPE_INT, { .i64 = 25 }, 1, INT_MAX, FLAGS },
536 { "alpha", "fade alpha if it is available on the input", OFFSET(alpha), AV_OPT_TYPE_BOOL, {.i64 = 0 }, 0, 1, FLAGS },
537 { "start_time", "Number of seconds of the beginning of the effect.",
538 OFFSET(start_time), AV_OPT_TYPE_DURATION, {.i64 = 0. }, 0, INT64_MAX, FLAGS },
539 { "st", "Number of seconds of the beginning of the effect.",
540 OFFSET(start_time), AV_OPT_TYPE_DURATION, {.i64 = 0. }, 0, INT64_MAX, FLAGS },
541 { "duration", "Duration of the effect in seconds.",
542 OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64 = 0. }, 0, INT64_MAX, FLAGS },
543 { "d", "Duration of the effect in seconds.",
544 OFFSET(duration), AV_OPT_TYPE_DURATION, {.i64 = 0. }, 0, INT64_MAX, FLAGS },
545 { "color", "set color", OFFSET(color_rgba), AV_OPT_TYPE_COLOR, {.str = "black"}, 0, 0, FLAGS },
546 { "c", "set color", OFFSET(color_rgba), AV_OPT_TYPE_COLOR, {.str = "black"}, 0, 0, FLAGS },
547 { NULL }
548 };
549
550 AVFILTER_DEFINE_CLASS(fade);
551
552 static const AVFilterPad avfilter_vf_fade_inputs[] = {
553 {
554 .name = "default",
555 .type = AVMEDIA_TYPE_VIDEO,
556 .config_props = config_input,
557 .filter_frame = filter_frame,
558 .needs_writable = 1,
559 },
560 { NULL }
561 };
562
563 static const AVFilterPad avfilter_vf_fade_outputs[] = {
564 {
565 .name = "default",
566 .type = AVMEDIA_TYPE_VIDEO,
567 },
568 { NULL }
569 };
570
571 AVFilter ff_vf_fade = {
572 .name = "fade",
573 .description = NULL_IF_CONFIG_SMALL("Fade in/out input video."),
574 .init = init,
575 .priv_size = sizeof(FadeContext),
576 .priv_class = &fade_class,
577 .query_formats = query_formats,
578 .inputs = avfilter_vf_fade_inputs,
579 .outputs = avfilter_vf_fade_outputs,
580 .flags = AVFILTER_FLAG_SLICE_THREADS |
581 AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC,
582 };
583