FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavfilter/vf_overlay.c
Date: 2024-11-20 23:03:26
Exec Total Coverage
Lines: 266 376 70.7%
Functions: 33 48 68.8%
Branches: 174 312 55.8%
Line Branch Exec Source
1 /*
2 * Copyright (c) 2010 Stefano Sabatini
3 * Copyright (c) 2010 Baptiste Coudurier
4 * Copyright (c) 2007 Bobby Bingham
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 * overlay one video on top of another
26 */
27
28 #include "avfilter.h"
29 #include "formats.h"
30 #include "libavutil/common.h"
31 #include "libavutil/eval.h"
32 #include "libavutil/avstring.h"
33 #include "libavutil/pixdesc.h"
34 #include "libavutil/imgutils.h"
35 #include "libavutil/mathematics.h"
36 #include "libavutil/opt.h"
37 #include "libavutil/timestamp.h"
38 #include "filters.h"
39 #include "drawutils.h"
40 #include "framesync.h"
41 #include "video.h"
42 #include "vf_overlay.h"
43
44 typedef struct ThreadData {
45 AVFrame *dst, *src;
46 } ThreadData;
47
48 static const char *const var_names[] = {
49 "main_w", "W", ///< width of the main video
50 "main_h", "H", ///< height of the main video
51 "overlay_w", "w", ///< width of the overlay video
52 "overlay_h", "h", ///< height of the overlay video
53 "hsub",
54 "vsub",
55 "x",
56 "y",
57 "n", ///< number of frame
58 #if FF_API_FRAME_PKT
59 "pos", ///< position in the file
60 #endif
61 "t", ///< timestamp expressed in seconds
62 NULL
63 };
64
65 #define MAIN 0
66 #define OVERLAY 1
67
68 #define R 0
69 #define G 1
70 #define B 2
71 #define A 3
72
73 #define Y 0
74 #define U 1
75 #define V 2
76
77 enum EvalMode {
78 EVAL_MODE_INIT,
79 EVAL_MODE_FRAME,
80 EVAL_MODE_NB
81 };
82
83 46 static av_cold void uninit(AVFilterContext *ctx)
84 {
85 46 OverlayContext *s = ctx->priv;
86
87 46 ff_framesync_uninit(&s->fs);
88 46 av_expr_free(s->x_pexpr); s->x_pexpr = NULL;
89 46 av_expr_free(s->y_pexpr); s->y_pexpr = NULL;
90 46 }
91
92 1442 static inline int normalize_xy(double d, int chroma_sub)
93 {
94
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 1442 if (isnan(d))
95 ✗ return INT_MAX;
96 1442 return (int)d & ~((1 << chroma_sub) - 1);
97 }
98
99 721 static void eval_expr(AVFilterContext *ctx)
100 {
101 721 OverlayContext *s = ctx->priv;
102
103 721 s->var_values[VAR_X] = av_expr_eval(s->x_pexpr, s->var_values, NULL);
104 721 s->var_values[VAR_Y] = av_expr_eval(s->y_pexpr, s->var_values, NULL);
105 /* It is necessary if x is expressed from y */
106 721 s->var_values[VAR_X] = av_expr_eval(s->x_pexpr, s->var_values, NULL);
107 721 s->x = normalize_xy(s->var_values[VAR_X], s->hsub);
108 721 s->y = normalize_xy(s->var_values[VAR_Y], s->vsub);
109 721 }
110
111 46 static int set_expr(AVExpr **pexpr, const char *expr, const char *option, void *log_ctx)
112 {
113 int ret;
114 46 AVExpr *old = NULL;
115
116
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 46 if (*pexpr)
117 ✗ old = *pexpr;
118 46 ret = av_expr_parse(pexpr, expr, var_names,
119 NULL, NULL, NULL, NULL, 0, log_ctx);
120
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 46 if (ret < 0) {
121 ✗ av_log(log_ctx, AV_LOG_ERROR,
122 "Error when evaluating the expression '%s' for %s\n",
123 expr, option);
124 ✗ *pexpr = old;
125 ✗ return ret;
126 }
127
128 46 av_expr_free(old);
129 46 return 0;
130 }
131
132 ✗ static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
133 char *res, int res_len, int flags)
134 {
135 ✗ OverlayContext *s = ctx->priv;
136 int ret;
137
138 ✗ if (!strcmp(cmd, "x"))
139 ✗ ret = set_expr(&s->x_pexpr, args, cmd, ctx);
140 ✗ else if (!strcmp(cmd, "y"))
141 ✗ ret = set_expr(&s->y_pexpr, args, cmd, ctx);
142 else
143 ✗ ret = AVERROR(ENOSYS);
144
145 ✗ if (ret < 0)
146 ✗ return ret;
147
148 ✗ if (s->eval_mode == EVAL_MODE_INIT) {
149 ✗ eval_expr(ctx);
150 ✗ av_log(ctx, AV_LOG_VERBOSE, "x:%f xi:%d y:%f yi:%d\n",
151 s->var_values[VAR_X], s->x,
152 s->var_values[VAR_Y], s->y);
153 }
154 ✗ return ret;
155 }
156
157 static const enum AVPixelFormat alpha_pix_fmts[] = {
158 AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
159 AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
160 AV_PIX_FMT_ARGB, AV_PIX_FMT_ABGR, AV_PIX_FMT_RGBA,
161 AV_PIX_FMT_BGRA, AV_PIX_FMT_GBRAP, AV_PIX_FMT_NONE
162 };
163
164 23 static int query_formats(const AVFilterContext *ctx,
165 AVFilterFormatsConfig **cfg_in,
166 AVFilterFormatsConfig **cfg_out)
167 {
168 23 const OverlayContext *s = ctx->priv;
169
170 /* overlay formats contains alpha, for avoiding conversion with alpha information loss */
171 static const enum AVPixelFormat main_pix_fmts_yuv420[] = {
172 AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVA420P,
173 AV_PIX_FMT_NV12, AV_PIX_FMT_NV21,
174 AV_PIX_FMT_NONE
175 };
176 static const enum AVPixelFormat overlay_pix_fmts_yuv420[] = {
177 AV_PIX_FMT_YUVA420P, AV_PIX_FMT_NONE
178 };
179
180 static const enum AVPixelFormat main_pix_fmts_yuv420p10[] = {
181 AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUVA420P10,
182 AV_PIX_FMT_NONE
183 };
184 static const enum AVPixelFormat overlay_pix_fmts_yuv420p10[] = {
185 AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_NONE
186 };
187
188 static const enum AVPixelFormat main_pix_fmts_yuv422[] = {
189 AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_NONE
190 };
191 static const enum AVPixelFormat overlay_pix_fmts_yuv422[] = {
192 AV_PIX_FMT_YUVA422P, AV_PIX_FMT_NONE
193 };
194
195 static const enum AVPixelFormat main_pix_fmts_yuv422p10[] = {
196 AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_NONE
197 };
198 static const enum AVPixelFormat overlay_pix_fmts_yuv422p10[] = {
199 AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_NONE
200 };
201
202 static const enum AVPixelFormat main_pix_fmts_yuv444[] = {
203 AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVA444P, AV_PIX_FMT_NONE
204 };
205 static const enum AVPixelFormat overlay_pix_fmts_yuv444[] = {
206 AV_PIX_FMT_YUVA444P, AV_PIX_FMT_NONE
207 };
208
209 static const enum AVPixelFormat main_pix_fmts_yuv444p10[] = {
210 AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_NONE
211 };
212 static const enum AVPixelFormat overlay_pix_fmts_yuv444p10[] = {
213 AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_NONE
214 };
215
216 static const enum AVPixelFormat main_pix_fmts_gbrp[] = {
217 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP, AV_PIX_FMT_NONE
218 };
219 static const enum AVPixelFormat overlay_pix_fmts_gbrp[] = {
220 AV_PIX_FMT_GBRAP, AV_PIX_FMT_NONE
221 };
222
223 static const enum AVPixelFormat main_pix_fmts_rgb[] = {
224 AV_PIX_FMT_ARGB, AV_PIX_FMT_RGBA,
225 AV_PIX_FMT_ABGR, AV_PIX_FMT_BGRA,
226 AV_PIX_FMT_RGB24, AV_PIX_FMT_BGR24,
227 AV_PIX_FMT_NONE
228 };
229 static const enum AVPixelFormat overlay_pix_fmts_rgb[] = {
230 AV_PIX_FMT_ARGB, AV_PIX_FMT_RGBA,
231 AV_PIX_FMT_ABGR, AV_PIX_FMT_BGRA,
232 AV_PIX_FMT_NONE
233 };
234
235 const enum AVPixelFormat *main_formats, *overlay_formats;
236 AVFilterFormats *formats;
237 int ret;
238
239
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 23 switch (s->format) {
240 9 case OVERLAY_FORMAT_YUV420:
241 9 main_formats = main_pix_fmts_yuv420;
242 9 overlay_formats = overlay_pix_fmts_yuv420;
243 9 break;
244 1 case OVERLAY_FORMAT_YUV420P10:
245 1 main_formats = main_pix_fmts_yuv420p10;
246 1 overlay_formats = overlay_pix_fmts_yuv420p10;
247 1 break;
248 3 case OVERLAY_FORMAT_YUV422:
249 3 main_formats = main_pix_fmts_yuv422;
250 3 overlay_formats = overlay_pix_fmts_yuv422;
251 3 break;
252 1 case OVERLAY_FORMAT_YUV422P10:
253 1 main_formats = main_pix_fmts_yuv422p10;
254 1 overlay_formats = overlay_pix_fmts_yuv422p10;
255 1 break;
256 3 case OVERLAY_FORMAT_YUV444:
257 3 main_formats = main_pix_fmts_yuv444;
258 3 overlay_formats = overlay_pix_fmts_yuv444;
259 3 break;
260 1 case OVERLAY_FORMAT_YUV444P10:
261 1 main_formats = main_pix_fmts_yuv444p10;
262 1 overlay_formats = overlay_pix_fmts_yuv444p10;
263 1 break;
264 3 case OVERLAY_FORMAT_RGB:
265 3 main_formats = main_pix_fmts_rgb;
266 3 overlay_formats = overlay_pix_fmts_rgb;
267 3 break;
268 2 case OVERLAY_FORMAT_GBRP:
269 2 main_formats = main_pix_fmts_gbrp;
270 2 overlay_formats = overlay_pix_fmts_gbrp;
271 2 break;
272 ✗ case OVERLAY_FORMAT_AUTO:
273 ✗ return ff_set_common_formats_from_list2(ctx, cfg_in, cfg_out, alpha_pix_fmts);
274 ✗ default:
275 ✗ av_assert0(0);
276 }
277
278 23 formats = ff_make_format_list(main_formats);
279
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 46 if ((ret = ff_formats_ref(formats, &cfg_in[MAIN]->formats)) < 0 ||
280 23 (ret = ff_formats_ref(formats, &cfg_out[MAIN]->formats)) < 0)
281 ✗ return ret;
282
283 23 return ff_formats_ref(ff_make_format_list(overlay_formats),
284 23 &cfg_in[OVERLAY]->formats);
285 }
286
287 23 static int config_input_overlay(AVFilterLink *inlink)
288 {
289 23 AVFilterContext *ctx = inlink->dst;
290 23 OverlayContext *s = inlink->dst->priv;
291 int ret;
292 23 const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(inlink->format);
293
294 23 av_image_fill_max_pixsteps(s->overlay_pix_step, NULL, pix_desc);
295
296 /* Finish the configuration by evaluating the expressions
297 now when both inputs are configured. */
298 23 s->var_values[VAR_MAIN_W ] = s->var_values[VAR_MW] = ctx->inputs[MAIN ]->w;
299 23 s->var_values[VAR_MAIN_H ] = s->var_values[VAR_MH] = ctx->inputs[MAIN ]->h;
300 23 s->var_values[VAR_OVERLAY_W] = s->var_values[VAR_OW] = ctx->inputs[OVERLAY]->w;
301 23 s->var_values[VAR_OVERLAY_H] = s->var_values[VAR_OH] = ctx->inputs[OVERLAY]->h;
302 23 s->var_values[VAR_HSUB] = 1<<pix_desc->log2_chroma_w;
303 23 s->var_values[VAR_VSUB] = 1<<pix_desc->log2_chroma_h;
304 23 s->var_values[VAR_X] = NAN;
305 23 s->var_values[VAR_Y] = NAN;
306 23 s->var_values[VAR_N] = 0;
307 23 s->var_values[VAR_T] = NAN;
308 #if FF_API_FRAME_PKT
309 23 s->var_values[VAR_POS] = NAN;
310 #endif
311
312
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 46 if ((ret = set_expr(&s->x_pexpr, s->x_expr, "x", ctx)) < 0 ||
313 23 (ret = set_expr(&s->y_pexpr, s->y_expr, "y", ctx)) < 0)
314 ✗ return ret;
315
316 23 s->overlay_is_packed_rgb =
317 23 ff_fill_rgba_map(s->overlay_rgba_map, inlink->format) >= 0;
318 23 s->overlay_has_alpha = ff_fmt_is_in(inlink->format, alpha_pix_fmts);
319
320
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 23 if (s->eval_mode == EVAL_MODE_INIT) {
321 ✗ eval_expr(ctx);
322 ✗ av_log(ctx, AV_LOG_VERBOSE, "x:%f xi:%d y:%f yi:%d\n",
323 s->var_values[VAR_X], s->x,
324 s->var_values[VAR_Y], s->y);
325 }
326
327 69 av_log(ctx, AV_LOG_VERBOSE,
328 "main w:%d h:%d fmt:%s overlay w:%d h:%d fmt:%s\n",
329 23 ctx->inputs[MAIN]->w, ctx->inputs[MAIN]->h,
330 23 av_get_pix_fmt_name(ctx->inputs[MAIN]->format),
331 23 ctx->inputs[OVERLAY]->w, ctx->inputs[OVERLAY]->h,
332 23 av_get_pix_fmt_name(ctx->inputs[OVERLAY]->format));
333 23 return 0;
334 }
335
336 23 static int config_output(AVFilterLink *outlink)
337 {
338 23 AVFilterContext *ctx = outlink->src;
339 23 OverlayContext *s = ctx->priv;
340 int ret;
341
342
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 23 if ((ret = ff_framesync_init_dualinput(&s->fs, ctx)) < 0)
343 ✗ return ret;
344
345 23 outlink->w = ctx->inputs[MAIN]->w;
346 23 outlink->h = ctx->inputs[MAIN]->h;
347 23 outlink->time_base = ctx->inputs[MAIN]->time_base;
348
349 23 return ff_framesync_configure(&s->fs);
350 }
351
352 // divide by 255 and round to nearest
353 // apply a fast variant: (X+127)/255 = ((X+127)*257+257)>>16 = ((X+128)*257)>>16
354 #define FAST_DIV255(x) ((((x) + 128) * 257) >> 16)
355
356 // calculate the unpremultiplied alpha, applying the general equation:
357 // alpha = alpha_overlay / ( (alpha_main + alpha_overlay) - (alpha_main * alpha_overlay) )
358 // (((x) << 16) - ((x) << 9) + (x)) is a faster version of: 255 * 255 * x
359 // ((((x) + (y)) << 8) - ((x) + (y)) - (y) * (x)) is a faster version of: 255 * (x + y)
360 #define UNPREMULTIPLY_ALPHA(x, y) ((((x) << 16) - ((x) << 9) + (x)) / ((((x) + (y)) << 8) - ((x) + (y)) - (y) * (x)))
361
362 /**
363 * Blend image in src to destination buffer dst at position (x, y).
364 */
365
366 468 static av_always_inline void blend_slice_packed_rgb(AVFilterContext *ctx,
367 AVFrame *dst, const AVFrame *src,
368 int main_has_alpha, int x, int y,
369 int is_straight, int jobnr, int nb_jobs)
370 {
371 468 OverlayContext *s = ctx->priv;
372 int i, imax, j, jmax;
373 468 const int src_w = src->width;
374 468 const int src_h = src->height;
375 468 const int dst_w = dst->width;
376 468 const int dst_h = dst->height;
377 uint8_t alpha; ///< the amount of overlay to blend on to main
378 468 const int dr = s->main_rgba_map[R];
379 468 const int dg = s->main_rgba_map[G];
380 468 const int db = s->main_rgba_map[B];
381 468 const int da = s->main_rgba_map[A];
382 468 const int dstep = s->main_pix_step[0];
383 468 const int sr = s->overlay_rgba_map[R];
384 468 const int sg = s->overlay_rgba_map[G];
385 468 const int sb = s->overlay_rgba_map[B];
386 468 const int sa = s->overlay_rgba_map[A];
387 468 const int sstep = s->overlay_pix_step[0];
388 int slice_start, slice_end;
389 uint8_t *S, *sp, *d, *dp;
390
391
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 468 i = FFMAX(-y, 0);
392 468 imax = FFMIN3(-y + dst_h, FFMIN(src_h, dst_h), y + src_h);
393
394 468 slice_start = i + (imax * jobnr) / nb_jobs;
395 468 slice_end = i + (imax * (jobnr+1)) / nb_jobs;
396
397 468 sp = src->data[0] + (slice_start) * src->linesize[0];
398 468 dp = dst->data[0] + (y + slice_start) * dst->linesize[0];
399
400
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 4724 for (i = slice_start; i < slice_end; i++) {
401
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 4256 j = FFMAX(-x, 0);
402 4256 S = sp + j * sstep;
403 4256 d = dp + (x+j) * dstep;
404
405
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 421024 for (jmax = FFMIN(-x + dst_w, src_w); j < jmax; j++) {
406 416768 alpha = S[sa];
407
408 // if the main channel has an alpha channel, alpha has to be calculated
409 // to create an un-premultiplied (straight) alpha value
410
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 416768 if (main_has_alpha && alpha != 0 && alpha != 255) {
411 15829 uint8_t alpha_d = d[da];
412 15829 alpha = UNPREMULTIPLY_ALPHA(alpha, alpha_d);
413 }
414
415
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 416768 switch (alpha) {
416 192 case 0:
417 192 break;
418 384918 case 255:
419 384918 d[dr] = S[sr];
420 384918 d[dg] = S[sg];
421 384918 d[db] = S[sb];
422 384918 break;
423 31658 default:
424 // main_value = main_value * (1 - alpha) + overlay_value * alpha
425 // since alpha is in the range 0-255, the result must divided by 255
426
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 31658 d[dr] = is_straight ? FAST_DIV255(d[dr] * (255 - alpha) + S[sr] * alpha) :
427 ✗ FFMIN(FAST_DIV255(d[dr] * (255 - alpha)) + S[sr], 255);
428
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 31658 d[dg] = is_straight ? FAST_DIV255(d[dg] * (255 - alpha) + S[sg] * alpha) :
429 ✗ FFMIN(FAST_DIV255(d[dg] * (255 - alpha)) + S[sg], 255);
430
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 31658 d[db] = is_straight ? FAST_DIV255(d[db] * (255 - alpha) + S[sb] * alpha) :
431 ✗ FFMIN(FAST_DIV255(d[db] * (255 - alpha)) + S[sb], 255);
432 }
433
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 416768 if (main_has_alpha) {
434
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 16384 switch (alpha) {
435 96 case 0:
436 96 break;
437 459 case 255:
438 459 d[da] = S[sa];
439 459 break;
440 15829 default:
441 // apply alpha compositing: main_alpha += (1-main_alpha) * overlay_alpha
442 15829 d[da] += FAST_DIV255((255 - d[da]) * S[sa]);
443 }
444 }
445 416768 d += dstep;
446 416768 S += sstep;
447 }
448 4256 dp += dst->linesize[0];
449 4256 sp += src->linesize[0];
450 }
451 468 }
452
453 #define DEFINE_BLEND_PLANE(depth, nbits) \
454 static av_always_inline void blend_plane_##depth##_##nbits##bits(AVFilterContext *ctx, \
455 AVFrame *dst, const AVFrame *src, \
456 int src_w, int src_h, \
457 int dst_w, int dst_h, \
458 int i, int hsub, int vsub, \
459 int x, int y, \
460 int main_has_alpha, \
461 int dst_plane, \
462 int dst_offset, \
463 int dst_step, \
464 int straight, \
465 int yuv, \
466 int jobnr, \
467 int nb_jobs) \
468 { \
469 OverlayContext *octx = ctx->priv; \
470 int src_wp = AV_CEIL_RSHIFT(src_w, hsub); \
471 int src_hp = AV_CEIL_RSHIFT(src_h, vsub); \
472 int dst_wp = AV_CEIL_RSHIFT(dst_w, hsub); \
473 int dst_hp = AV_CEIL_RSHIFT(dst_h, vsub); \
474 int yp = y>>vsub; \
475 int xp = x>>hsub; \
476 uint##depth##_t *s, *sp, *d, *dp, *dap, *a, *da, *ap; \
477 int jmax, j, k, kmax; \
478 int slice_start, slice_end; \
479 const uint##depth##_t max = (1 << nbits) - 1; \
480 const uint##depth##_t mid = (1 << (nbits -1)) ; \
481 int bytes = depth / 8; \
482 \
483 dst_step /= bytes; \
484 j = FFMAX(-yp, 0); \
485 jmax = FFMIN3(-yp + dst_hp, FFMIN(src_hp, dst_hp), yp + src_hp); \
486 \
487 slice_start = j + (jmax * jobnr) / nb_jobs; \
488 slice_end = j + (jmax * (jobnr+1)) / nb_jobs; \
489 \
490 sp = (uint##depth##_t *)(src->data[i] + (slice_start) * src->linesize[i]); \
491 dp = (uint##depth##_t *)(dst->data[dst_plane] \
492 + (yp + slice_start) * dst->linesize[dst_plane] \
493 + dst_offset); \
494 ap = (uint##depth##_t *)(src->data[3] + (slice_start << vsub) * src->linesize[3]); \
495 dap = (uint##depth##_t *)(dst->data[3] + ((yp + slice_start) << vsub) * dst->linesize[3]); \
496 \
497 for (j = slice_start; j < slice_end; j++) { \
498 k = FFMAX(-xp, 0); \
499 d = dp + (xp+k) * dst_step; \
500 s = sp + k; \
501 a = ap + (k<<hsub); \
502 da = dap + ((xp+k) << hsub); \
503 kmax = FFMIN(-xp + dst_wp, src_wp); \
504 \
505 if (nbits == 8 && ((vsub && j+1 < src_hp) || !vsub) && octx->blend_row[i]) { \
506 int c = octx->blend_row[i]((uint8_t*)d, (uint8_t*)da, (uint8_t*)s, \
507 (uint8_t*)a, kmax - k, src->linesize[3]); \
508 \
509 s += c; \
510 d += dst_step * c; \
511 da += (1 << hsub) * c; \
512 a += (1 << hsub) * c; \
513 k += c; \
514 } \
515 for (; k < kmax; k++) { \
516 int alpha_v, alpha_h, alpha; \
517 \
518 /* average alpha for color components, improve quality */ \
519 if (hsub && vsub && j+1 < src_hp && k+1 < src_wp) { \
520 alpha = (a[0] + a[src->linesize[3]] + \
521 a[1] + a[src->linesize[3]+1]) >> 2; \
522 } else if (hsub || vsub) { \
523 alpha_h = hsub && k+1 < src_wp ? \
524 (a[0] + a[1]) >> 1 : a[0]; \
525 alpha_v = vsub && j+1 < src_hp ? \
526 (a[0] + a[src->linesize[3]]) >> 1 : a[0]; \
527 alpha = (alpha_v + alpha_h) >> 1; \
528 } else \
529 alpha = a[0]; \
530 /* if the main channel has an alpha channel, alpha has to be calculated */ \
531 /* to create an un-premultiplied (straight) alpha value */ \
532 if (main_has_alpha && alpha != 0 && alpha != max) { \
533 /* average alpha for color components, improve quality */ \
534 uint8_t alpha_d; \
535 if (hsub && vsub && j+1 < src_hp && k+1 < src_wp) { \
536 alpha_d = (da[0] + da[dst->linesize[3]] + \
537 da[1] + da[dst->linesize[3]+1]) >> 2; \
538 } else if (hsub || vsub) { \
539 alpha_h = hsub && k+1 < src_wp ? \
540 (da[0] + da[1]) >> 1 : da[0]; \
541 alpha_v = vsub && j+1 < src_hp ? \
542 (da[0] + da[dst->linesize[3]]) >> 1 : da[0]; \
543 alpha_d = (alpha_v + alpha_h) >> 1; \
544 } else \
545 alpha_d = da[0]; \
546 alpha = UNPREMULTIPLY_ALPHA(alpha, alpha_d); \
547 } \
548 if (straight) { \
549 if (nbits > 8) \
550 *d = (*d * (max - alpha) + *s * alpha) / max; \
551 else \
552 *d = FAST_DIV255(*d * (255 - alpha) + *s * alpha); \
553 } else { \
554 if (nbits > 8) { \
555 if (i && yuv) \
556 *d = av_clip((*d * (max - alpha) + *s * alpha) / max + *s - mid, -mid, mid) + mid; \
557 else \
558 *d = av_clip_uintp2((*d * (max - alpha) + *s * alpha) / max + *s - (16<<(nbits-8)),\
559 nbits);\
560 } else { \
561 if (i && yuv) \
562 *d = av_clip(FAST_DIV255((*d - mid) * (max - alpha)) + *s - mid, -mid, mid) + mid; \
563 else \
564 *d = av_clip_uint8(FAST_DIV255(*d * (255 - alpha)) + *s - 16); \
565 } \
566 } \
567 s++; \
568 d += dst_step; \
569 da += 1 << hsub; \
570 a += 1 << hsub; \
571 } \
572 dp += dst->linesize[dst_plane] / bytes; \
573 sp += src->linesize[i] / bytes; \
574 ap += (1 << vsub) * src->linesize[3] / bytes; \
575 dap += (1 << vsub) * dst->linesize[3] / bytes; \
576 } \
577 }
578
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 182829712 DEFINE_BLEND_PLANE(8, 8)
579
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 151923 DEFINE_BLEND_PLANE(16, 10)
580
581 #define DEFINE_ALPHA_COMPOSITE(depth, nbits) \
582 static inline void alpha_composite_##depth##_##nbits##bits(const AVFrame *src, const AVFrame *dst, \
583 int src_w, int src_h, \
584 int dst_w, int dst_h, \
585 int x, int y, \
586 int jobnr, int nb_jobs) \
587 { \
588 uint##depth##_t alpha; /* the amount of overlay to blend on to main */ \
589 uint##depth##_t *s, *sa, *d, *da; \
590 int i, imax, j, jmax; \
591 int slice_start, slice_end; \
592 const uint##depth##_t max = (1 << nbits) - 1; \
593 int bytes = depth / 8; \
594 \
595 imax = FFMIN3(-y + dst_h, FFMIN(src_h, dst_h), y + src_h); \
596 i = FFMAX(-y, 0); \
597 \
598 slice_start = i + (imax * jobnr) / nb_jobs; \
599 slice_end = i + ((imax * (jobnr+1)) / nb_jobs); \
600 \
601 sa = (uint##depth##_t *)(src->data[3] + (slice_start) * src->linesize[3]); \
602 da = (uint##depth##_t *)(dst->data[3] + (y + slice_start) * dst->linesize[3]); \
603 \
604 for (i = slice_start; i < slice_end; i++) { \
605 j = FFMAX(-x, 0); \
606 s = sa + j; \
607 d = da + x+j; \
608 \
609 for (jmax = FFMIN(-x + dst_w, src_w); j < jmax; j++) { \
610 alpha = *s; \
611 if (alpha != 0 && alpha != max) { \
612 uint8_t alpha_d = *d; \
613 alpha = UNPREMULTIPLY_ALPHA(alpha, alpha_d); \
614 } \
615 if (alpha == max) \
616 *d = *s; \
617 else if (alpha > 0) { \
618 /* apply alpha compositing: main_alpha += (1-main_alpha) * overlay_alpha */ \
619 if (nbits > 8) \
620 *d += (max - *d) * *s / max; \
621 else \
622 *d += FAST_DIV255((max - *d) * *s); \
623 } \
624 d += 1; \
625 s += 1; \
626 } \
627 da += dst->linesize[3] / bytes; \
628 sa += src->linesize[3] / bytes; \
629 } \
630 }
631
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 842984 DEFINE_ALPHA_COMPOSITE(8, 8)
632 ✗ DEFINE_ALPHA_COMPOSITE(16, 10)
633
634 #define DEFINE_BLEND_SLICE_YUV(depth, nbits) \
635 static av_always_inline void blend_slice_yuv_##depth##_##nbits##bits(AVFilterContext *ctx, \
636 AVFrame *dst, const AVFrame *src, \
637 int hsub, int vsub, \
638 int main_has_alpha, \
639 int x, int y, \
640 int is_straight, \
641 int jobnr, int nb_jobs) \
642 { \
643 OverlayContext *s = ctx->priv; \
644 const int src_w = src->width; \
645 const int src_h = src->height; \
646 const int dst_w = dst->width; \
647 const int dst_h = dst->height; \
648 \
649 blend_plane_##depth##_##nbits##bits(ctx, dst, src, src_w, src_h, dst_w, dst_h, 0, 0, 0, \
650 x, y, main_has_alpha, s->main_desc->comp[0].plane, s->main_desc->comp[0].offset, \
651 s->main_desc->comp[0].step, is_straight, 1, jobnr, nb_jobs); \
652 blend_plane_##depth##_##nbits##bits(ctx, dst, src, src_w, src_h, dst_w, dst_h, 1, hsub, vsub, \
653 x, y, main_has_alpha, s->main_desc->comp[1].plane, s->main_desc->comp[1].offset, \
654 s->main_desc->comp[1].step, is_straight, 1, jobnr, nb_jobs); \
655 blend_plane_##depth##_##nbits##bits(ctx, dst, src, src_w, src_h, dst_w, dst_h, 2, hsub, vsub, \
656 x, y, main_has_alpha, s->main_desc->comp[2].plane, s->main_desc->comp[2].offset, \
657 s->main_desc->comp[2].step, is_straight, 1, jobnr, nb_jobs); \
658 \
659 if (main_has_alpha) \
660 alpha_composite_##depth##_##nbits##bits(src, dst, src_w, src_h, dst_w, dst_h, x, y, \
661 jobnr, nb_jobs); \
662 }
663
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 5922 DEFINE_BLEND_SLICE_YUV(8, 8)
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 81 DEFINE_BLEND_SLICE_YUV(16, 10)
665
666 18 static av_always_inline void blend_slice_planar_rgb(AVFilterContext *ctx,
667 AVFrame *dst, const AVFrame *src,
668 int hsub, int vsub,
669 int main_has_alpha,
670 int x, int y,
671 int is_straight,
672 int jobnr,
673 int nb_jobs)
674 {
675 18 OverlayContext *s = ctx->priv;
676 18 const int src_w = src->width;
677 18 const int src_h = src->height;
678 18 const int dst_w = dst->width;
679 18 const int dst_h = dst->height;
680
681 18 blend_plane_8_8bits(ctx, dst, src, src_w, src_h, dst_w, dst_h, 0, 0, 0, x, y, main_has_alpha,
682 18 s->main_desc->comp[1].plane, s->main_desc->comp[1].offset, s->main_desc->comp[1].step, is_straight, 0,
683 jobnr, nb_jobs);
684 18 blend_plane_8_8bits(ctx, dst, src, src_w, src_h, dst_w, dst_h, 1, hsub, vsub, x, y, main_has_alpha,
685 18 s->main_desc->comp[2].plane, s->main_desc->comp[2].offset, s->main_desc->comp[2].step, is_straight, 0,
686 jobnr, nb_jobs);
687 18 blend_plane_8_8bits(ctx, dst, src, src_w, src_h, dst_w, dst_h, 2, hsub, vsub, x, y, main_has_alpha,
688 18 s->main_desc->comp[0].plane, s->main_desc->comp[0].offset, s->main_desc->comp[0].step, is_straight, 0,
689 jobnr, nb_jobs);
690
691
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 18 if (main_has_alpha)
692 9 alpha_composite_8_8bits(src, dst, src_w, src_h, dst_w, dst_h, x, y, jobnr, nb_jobs);
693 18 }
694
695 #define DEFINE_BLEND_SLICE_PLANAR_FMT(format_, blend_slice_fn_suffix_, hsub_, vsub_, main_has_alpha_, direct_) \
696 static int blend_slice_##format_(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) \
697 { \
698 OverlayContext *s = ctx->priv; \
699 ThreadData *td = arg; \
700 blend_slice_##blend_slice_fn_suffix_(ctx, td->dst, td->src, \
701 hsub_, vsub_, main_has_alpha_, \
702 s->x, s->y, direct_, \
703 jobnr, nb_jobs); \
704 return 0; \
705 }
706
707 // FMT FN H V A D
708 4977 DEFINE_BLEND_SLICE_PLANAR_FMT(yuv420, yuv_8_8bits, 1, 1, 0, 1);
709 9 DEFINE_BLEND_SLICE_PLANAR_FMT(yuva420, yuv_8_8bits, 1, 1, 1, 1);
710 27 DEFINE_BLEND_SLICE_PLANAR_FMT(yuv420p10, yuv_16_10bits, 1, 1, 0, 1);
711 ✗ DEFINE_BLEND_SLICE_PLANAR_FMT(yuva420p10, yuv_16_10bits, 1, 1, 1, 1);
712 27 DEFINE_BLEND_SLICE_PLANAR_FMT(yuv422p10, yuv_16_10bits, 1, 0, 0, 1);
713 ✗ DEFINE_BLEND_SLICE_PLANAR_FMT(yuva422p10, yuv_16_10bits, 1, 0, 1, 1);
714 9 DEFINE_BLEND_SLICE_PLANAR_FMT(yuv422, yuv_8_8bits, 1, 0, 0, 1);
715 459 DEFINE_BLEND_SLICE_PLANAR_FMT(yuva422, yuv_8_8bits, 1, 0, 1, 1);
716 9 DEFINE_BLEND_SLICE_PLANAR_FMT(yuv444, yuv_8_8bits, 0, 0, 0, 1);
717 459 DEFINE_BLEND_SLICE_PLANAR_FMT(yuva444, yuv_8_8bits, 0, 0, 1, 1);
718 27 DEFINE_BLEND_SLICE_PLANAR_FMT(yuv444p10, yuv_16_10bits, 0, 0, 0, 1);
719 ✗ DEFINE_BLEND_SLICE_PLANAR_FMT(yuva444p10, yuv_16_10bits, 0, 0, 1, 1);
720 9 DEFINE_BLEND_SLICE_PLANAR_FMT(gbrp, planar_rgb, 0, 0, 0, 1);
721 9 DEFINE_BLEND_SLICE_PLANAR_FMT(gbrap, planar_rgb, 0, 0, 1, 1);
722 ✗ DEFINE_BLEND_SLICE_PLANAR_FMT(yuv420_pm, yuv_8_8bits, 1, 1, 0, 0);
723 ✗ DEFINE_BLEND_SLICE_PLANAR_FMT(yuva420_pm, yuv_8_8bits, 1, 1, 1, 0);
724 ✗ DEFINE_BLEND_SLICE_PLANAR_FMT(yuv422_pm, yuv_8_8bits, 1, 0, 0, 0);
725 ✗ DEFINE_BLEND_SLICE_PLANAR_FMT(yuva422_pm, yuv_8_8bits, 1, 0, 1, 0);
726 ✗ DEFINE_BLEND_SLICE_PLANAR_FMT(yuv444_pm, yuv_8_8bits, 0, 0, 0, 0);
727 ✗ DEFINE_BLEND_SLICE_PLANAR_FMT(yuva444_pm, yuv_8_8bits, 0, 0, 1, 0);
728 ✗ DEFINE_BLEND_SLICE_PLANAR_FMT(gbrp_pm, planar_rgb, 0, 0, 0, 0);
729 ✗ DEFINE_BLEND_SLICE_PLANAR_FMT(gbrap_pm, planar_rgb, 0, 0, 1, 0);
730
731 #define DEFINE_BLEND_SLICE_PACKED_FMT(format_, blend_slice_fn_suffix_, main_has_alpha_, direct_) \
732 static int blend_slice_##format_(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs) \
733 { \
734 OverlayContext *s = ctx->priv; \
735 ThreadData *td = arg; \
736 blend_slice_packed_##blend_slice_fn_suffix_(ctx, td->dst, td->src, \
737 main_has_alpha_, \
738 s->x, s->y, direct_, \
739 jobnr, nb_jobs); \
740 return 0; \
741 }
742
743 // FMT FN A D
744 459 DEFINE_BLEND_SLICE_PACKED_FMT(rgb, rgb, 0, 1);
745 9 DEFINE_BLEND_SLICE_PACKED_FMT(rgba, rgb, 1, 1);
746 ✗ DEFINE_BLEND_SLICE_PACKED_FMT(rgb_pm, rgb, 0, 0);
747 ✗ DEFINE_BLEND_SLICE_PACKED_FMT(rgba_pm, rgb, 1, 0);
748
749 23 static int config_input_main(AVFilterLink *inlink)
750 {
751 23 OverlayContext *s = inlink->dst->priv;
752 23 const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(inlink->format);
753
754 23 av_image_fill_max_pixsteps(s->main_pix_step, NULL, pix_desc);
755
756 23 s->hsub = pix_desc->log2_chroma_w;
757 23 s->vsub = pix_desc->log2_chroma_h;
758
759 23 s->main_desc = pix_desc;
760
761 23 s->main_is_packed_rgb =
762 23 ff_fill_rgba_map(s->main_rgba_map, inlink->format) >= 0;
763 23 s->main_has_alpha = ff_fmt_is_in(inlink->format, alpha_pix_fmts);
764
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 23 switch (s->format) {
765 9 case OVERLAY_FORMAT_YUV420:
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 9 s->blend_slice = s->main_has_alpha ? blend_slice_yuva420 : blend_slice_yuv420;
767 9 break;
768 1 case OVERLAY_FORMAT_YUV420P10:
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 1 s->blend_slice = s->main_has_alpha ? blend_slice_yuva420p10 : blend_slice_yuv420p10;
770 1 break;
771 3 case OVERLAY_FORMAT_YUV422:
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 3 s->blend_slice = s->main_has_alpha ? blend_slice_yuva422 : blend_slice_yuv422;
773 3 break;
774 1 case OVERLAY_FORMAT_YUV422P10:
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 1 s->blend_slice = s->main_has_alpha ? blend_slice_yuva422p10 : blend_slice_yuv422p10;
776 1 break;
777 3 case OVERLAY_FORMAT_YUV444:
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 3 s->blend_slice = s->main_has_alpha ? blend_slice_yuva444 : blend_slice_yuv444;
779 3 break;
780 1 case OVERLAY_FORMAT_YUV444P10:
781
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 1 s->blend_slice = s->main_has_alpha ? blend_slice_yuva444p10 : blend_slice_yuv444p10;
782 1 break;
783 3 case OVERLAY_FORMAT_RGB:
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 3 s->blend_slice = s->main_has_alpha ? blend_slice_rgba : blend_slice_rgb;
785 3 break;
786 2 case OVERLAY_FORMAT_GBRP:
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 2 s->blend_slice = s->main_has_alpha ? blend_slice_gbrap : blend_slice_gbrp;
788 2 break;
789 ✗ case OVERLAY_FORMAT_AUTO:
790 ✗ switch (inlink->format) {
791 ✗ case AV_PIX_FMT_YUVA420P:
792 ✗ s->blend_slice = blend_slice_yuva420;
793 ✗ break;
794 ✗ case AV_PIX_FMT_YUVA420P10:
795 ✗ s->blend_slice = blend_slice_yuva420p10;
796 ✗ break;
797 ✗ case AV_PIX_FMT_YUVA422P:
798 ✗ s->blend_slice = blend_slice_yuva422;
799 ✗ break;
800 ✗ case AV_PIX_FMT_YUVA422P10:
801 ✗ s->blend_slice = blend_slice_yuva422p10;
802 ✗ break;
803 ✗ case AV_PIX_FMT_YUVA444P:
804 ✗ s->blend_slice = blend_slice_yuva444;
805 ✗ break;
806 ✗ case AV_PIX_FMT_YUVA444P10:
807 ✗ s->blend_slice = blend_slice_yuva444p10;
808 ✗ break;
809 ✗ case AV_PIX_FMT_ARGB:
810 case AV_PIX_FMT_RGBA:
811 case AV_PIX_FMT_BGRA:
812 case AV_PIX_FMT_ABGR:
813 ✗ s->blend_slice = blend_slice_rgba;
814 ✗ break;
815 ✗ case AV_PIX_FMT_GBRAP:
816 ✗ s->blend_slice = blend_slice_gbrap;
817 ✗ break;
818 ✗ default:
819 ✗ av_assert0(0);
820 break;
821 }
822 ✗ break;
823 }
824
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 23 if (!s->alpha_format)
826 23 goto end;
827
828 ✗ switch (s->format) {
829 ✗ case OVERLAY_FORMAT_YUV420:
830 ✗ s->blend_slice = s->main_has_alpha ? blend_slice_yuva420_pm : blend_slice_yuv420_pm;
831 ✗ break;
832 ✗ case OVERLAY_FORMAT_YUV422:
833 ✗ s->blend_slice = s->main_has_alpha ? blend_slice_yuva422_pm : blend_slice_yuv422_pm;
834 ✗ break;
835 ✗ case OVERLAY_FORMAT_YUV444:
836 ✗ s->blend_slice = s->main_has_alpha ? blend_slice_yuva444_pm : blend_slice_yuv444_pm;
837 ✗ break;
838 ✗ case OVERLAY_FORMAT_RGB:
839 ✗ s->blend_slice = s->main_has_alpha ? blend_slice_rgba_pm : blend_slice_rgb_pm;
840 ✗ break;
841 ✗ case OVERLAY_FORMAT_GBRP:
842 ✗ s->blend_slice = s->main_has_alpha ? blend_slice_gbrap_pm : blend_slice_gbrp_pm;
843 ✗ break;
844 ✗ case OVERLAY_FORMAT_AUTO:
845 ✗ switch (inlink->format) {
846 ✗ case AV_PIX_FMT_YUVA420P:
847 ✗ s->blend_slice = blend_slice_yuva420_pm;
848 ✗ break;
849 ✗ case AV_PIX_FMT_YUVA422P:
850 ✗ s->blend_slice = blend_slice_yuva422_pm;
851 ✗ break;
852 ✗ case AV_PIX_FMT_YUVA444P:
853 ✗ s->blend_slice = blend_slice_yuva444_pm;
854 ✗ break;
855 ✗ case AV_PIX_FMT_ARGB:
856 case AV_PIX_FMT_RGBA:
857 case AV_PIX_FMT_BGRA:
858 case AV_PIX_FMT_ABGR:
859 ✗ s->blend_slice = blend_slice_rgba_pm;
860 ✗ break;
861 ✗ case AV_PIX_FMT_GBRAP:
862 ✗ s->blend_slice = blend_slice_gbrap_pm;
863 ✗ break;
864 ✗ default:
865 ✗ av_assert0(0);
866 break;
867 }
868 ✗ break;
869 }
870
871 23 end:
872 #if ARCH_X86
873 23 ff_overlay_init_x86(s, s->format, inlink->format,
874 23 s->alpha_format, s->main_has_alpha);
875 #endif
876
877 23 return 0;
878 }
879
880 724 static int do_blend(FFFrameSync *fs)
881 {
882 724 AVFilterContext *ctx = fs->parent;
883 AVFrame *mainpic, *second;
884 724 OverlayContext *s = ctx->priv;
885 724 AVFilterLink *inlink = ctx->inputs[0];
886 724 FilterLink *inl = ff_filter_link(inlink);
887 int ret;
888
889 724 ret = ff_framesync_dualinput_get_writable(fs, &mainpic, &second);
890
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 724 if (ret < 0)
891 ✗ return ret;
892
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 724 if (!second)
893 3 return ff_filter_frame(ctx->outputs[0], mainpic);
894
895
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 721 if (s->eval_mode == EVAL_MODE_FRAME) {
896
897 721 s->var_values[VAR_N] = inl->frame_count_out;
898 1442 s->var_values[VAR_T] = mainpic->pts == AV_NOPTS_VALUE ?
899
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 721 NAN : mainpic->pts * av_q2d(inlink->time_base);
900 #if FF_API_FRAME_PKT
901 FF_DISABLE_DEPRECATION_WARNINGS
902 {
903 721 int64_t pos = mainpic->pkt_pos;
904
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 721 s->var_values[VAR_POS] = pos == -1 ? NAN : pos;
905 }
906 FF_ENABLE_DEPRECATION_WARNINGS
907 #endif
908
909 721 s->var_values[VAR_OVERLAY_W] = s->var_values[VAR_OW] = second->width;
910 721 s->var_values[VAR_OVERLAY_H] = s->var_values[VAR_OH] = second->height;
911 721 s->var_values[VAR_MAIN_W ] = s->var_values[VAR_MW] = mainpic->width;
912 721 s->var_values[VAR_MAIN_H ] = s->var_values[VAR_MH] = mainpic->height;
913
914 721 eval_expr(ctx);
915 721 av_log(ctx, AV_LOG_DEBUG, "n:%f t:%f x:%f xi:%d y:%f yi:%d\n",
916 s->var_values[VAR_N], s->var_values[VAR_T],
917 s->var_values[VAR_X], s->x,
918 s->var_values[VAR_Y], s->y);
919 }
920
921
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 721 if (s->x < mainpic->width && s->x + second->width >= 0 &&
922
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 721 s->y < mainpic->height && s->y + second->height >= 0) {
923 ThreadData td;
924
925 721 td.dst = mainpic;
926 721 td.src = second;
927
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 721 ff_filter_execute(ctx, s->blend_slice, &td, NULL, FFMIN(FFMAX(1, FFMIN3(s->y + second->height, FFMIN(second->height, mainpic->height), mainpic->height - s->y)),
928 ff_filter_get_nb_threads(ctx)));
929 }
930 721 return ff_filter_frame(ctx->outputs[0], mainpic);
931 }
932
933 46 static av_cold int init(AVFilterContext *ctx)
934 {
935 46 OverlayContext *s = ctx->priv;
936
937 46 s->fs.on_event = do_blend;
938 46 return 0;
939 }
940
941 1859 static int activate(AVFilterContext *ctx)
942 {
943 1859 OverlayContext *s = ctx->priv;
944 1859 return ff_framesync_activate(&s->fs);
945 }
946
947 #define OFFSET(x) offsetof(OverlayContext, x)
948 #define FLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM
949 #define TFLAGS AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
950
951 static const AVOption overlay_options[] = {
952 { "x", "set the x expression", OFFSET(x_expr), AV_OPT_TYPE_STRING, {.str = "0"}, 0, 0, TFLAGS },
953 { "y", "set the y expression", OFFSET(y_expr), AV_OPT_TYPE_STRING, {.str = "0"}, 0, 0, TFLAGS },
954 { "eof_action", "Action to take when encountering EOF from secondary input ",
955 OFFSET(fs.opt_eof_action), AV_OPT_TYPE_INT, { .i64 = EOF_ACTION_REPEAT },
956 EOF_ACTION_REPEAT, EOF_ACTION_PASS, .flags = FLAGS, .unit = "eof_action" },
957 { "repeat", "Repeat the previous frame.", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_REPEAT }, .flags = FLAGS, .unit = "eof_action" },
958 { "endall", "End both streams.", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_ENDALL }, .flags = FLAGS, .unit = "eof_action" },
959 { "pass", "Pass through the main input.", 0, AV_OPT_TYPE_CONST, { .i64 = EOF_ACTION_PASS }, .flags = FLAGS, .unit = "eof_action" },
960 { "eval", "specify when to evaluate expressions", OFFSET(eval_mode), AV_OPT_TYPE_INT, {.i64 = EVAL_MODE_FRAME}, 0, EVAL_MODE_NB-1, FLAGS, .unit = "eval" },
961 { "init", "eval expressions once during initialization", 0, AV_OPT_TYPE_CONST, {.i64=EVAL_MODE_INIT}, .flags = FLAGS, .unit = "eval" },
962 { "frame", "eval expressions per-frame", 0, AV_OPT_TYPE_CONST, {.i64=EVAL_MODE_FRAME}, .flags = FLAGS, .unit = "eval" },
963 { "shortest", "force termination when the shortest input terminates", OFFSET(fs.opt_shortest), AV_OPT_TYPE_BOOL, { .i64 = 0 }, 0, 1, FLAGS },
964 { "format", "set output format", OFFSET(format), AV_OPT_TYPE_INT, {.i64=OVERLAY_FORMAT_YUV420}, 0, OVERLAY_FORMAT_NB-1, FLAGS, .unit = "format" },
965 { "yuv420", "", 0, AV_OPT_TYPE_CONST, {.i64=OVERLAY_FORMAT_YUV420}, .flags = FLAGS, .unit = "format" },
966 { "yuv420p10", "", 0, AV_OPT_TYPE_CONST, {.i64=OVERLAY_FORMAT_YUV420P10}, .flags = FLAGS, .unit = "format" },
967 { "yuv422", "", 0, AV_OPT_TYPE_CONST, {.i64=OVERLAY_FORMAT_YUV422}, .flags = FLAGS, .unit = "format" },
968 { "yuv422p10", "", 0, AV_OPT_TYPE_CONST, {.i64=OVERLAY_FORMAT_YUV422P10}, .flags = FLAGS, .unit = "format" },
969 { "yuv444", "", 0, AV_OPT_TYPE_CONST, {.i64=OVERLAY_FORMAT_YUV444}, .flags = FLAGS, .unit = "format" },
970 { "yuv444p10", "", 0, AV_OPT_TYPE_CONST, {.i64=OVERLAY_FORMAT_YUV444P10}, .flags = FLAGS, .unit = "format" },
971 { "rgb", "", 0, AV_OPT_TYPE_CONST, {.i64=OVERLAY_FORMAT_RGB}, .flags = FLAGS, .unit = "format" },
972 { "gbrp", "", 0, AV_OPT_TYPE_CONST, {.i64=OVERLAY_FORMAT_GBRP}, .flags = FLAGS, .unit = "format" },
973 { "auto", "", 0, AV_OPT_TYPE_CONST, {.i64=OVERLAY_FORMAT_AUTO}, .flags = FLAGS, .unit = "format" },
974 { "repeatlast", "repeat overlay of the last overlay frame", OFFSET(fs.opt_repeatlast), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGS },
975 { "alpha", "alpha format", OFFSET(alpha_format), AV_OPT_TYPE_INT, {.i64=0}, 0, 1, FLAGS, .unit = "alpha_format" },
976 { "straight", "", 0, AV_OPT_TYPE_CONST, {.i64=0}, .flags = FLAGS, .unit = "alpha_format" },
977 { "premultiplied", "", 0, AV_OPT_TYPE_CONST, {.i64=1}, .flags = FLAGS, .unit = "alpha_format" },
978 { NULL }
979 };
980
981
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 420 FRAMESYNC_DEFINE_CLASS(overlay, OverlayContext, fs);
982
983 static const AVFilterPad avfilter_vf_overlay_inputs[] = {
984 {
985 .name = "main",
986 .type = AVMEDIA_TYPE_VIDEO,
987 .config_props = config_input_main,
988 },
989 {
990 .name = "overlay",
991 .type = AVMEDIA_TYPE_VIDEO,
992 .config_props = config_input_overlay,
993 },
994 };
995
996 static const AVFilterPad avfilter_vf_overlay_outputs[] = {
997 {
998 .name = "default",
999 .type = AVMEDIA_TYPE_VIDEO,
1000 .config_props = config_output,
1001 },
1002 };
1003
1004 const AVFilter ff_vf_overlay = {
1005 .name = "overlay",
1006 .description = NULL_IF_CONFIG_SMALL("Overlay a video source on top of the input."),
1007 .preinit = overlay_framesync_preinit,
1008 .init = init,
1009 .uninit = uninit,
1010 .priv_size = sizeof(OverlayContext),
1011 .priv_class = &overlay_class,
1012 .activate = activate,
1013 .process_command = process_command,
1014 FILTER_INPUTS(avfilter_vf_overlay_inputs),
1015 FILTER_OUTPUTS(avfilter_vf_overlay_outputs),
1016 FILTER_QUERY_FUNC2(query_formats),
1017 .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL |
1018 AVFILTER_FLAG_SLICE_THREADS,
1019 };
1020