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vf_blend.c
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1 /*
2  * Copyright (c) 2013 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/imgutils.h"
22 #include "libavutil/eval.h"
23 #include "libavutil/opt.h"
24 #include "libavutil/pixfmt.h"
25 #include "avfilter.h"
26 #include "bufferqueue.h"
27 #include "formats.h"
28 #include "framesync.h"
29 #include "internal.h"
30 #include "video.h"
31 #include "blend.h"
32 
33 #define TOP 0
34 #define BOTTOM 1
35 
36 typedef struct BlendContext {
37  const AVClass *class;
38  FFFrameSync fs;
39  int hsub, vsub; ///< chroma subsampling values
40  int nb_planes;
41  char *all_expr;
42  enum BlendMode all_mode;
43  double all_opacity;
44 
45  FilterParams params[4];
46  int tblend;
47  AVFrame *prev_frame; /* only used with tblend */
48 } BlendContext;
49 
50 static const char *const var_names[] = { "X", "Y", "W", "H", "SW", "SH", "T", "N", "A", "B", "TOP", "BOTTOM", NULL };
51 enum { VAR_X, VAR_Y, VAR_W, VAR_H, VAR_SW, VAR_SH, VAR_T, VAR_N, VAR_A, VAR_B, VAR_TOP, VAR_BOTTOM, VAR_VARS_NB };
52 
53 typedef struct ThreadData {
54  const AVFrame *top, *bottom;
55  AVFrame *dst;
56  AVFilterLink *inlink;
57  int plane;
58  int w, h;
59  FilterParams *param;
60 } ThreadData;
61 
62 #define COMMON_OPTIONS \
63  { "c0_mode", "set component #0 blend mode", OFFSET(params[0].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode"},\
64  { "c1_mode", "set component #1 blend mode", OFFSET(params[1].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode"},\
65  { "c2_mode", "set component #2 blend mode", OFFSET(params[2].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode"},\
66  { "c3_mode", "set component #3 blend mode", OFFSET(params[3].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, "mode"},\
67  { "all_mode", "set blend mode for all components", OFFSET(all_mode), AV_OPT_TYPE_INT, {.i64=-1},-1, BLEND_NB-1, FLAGS, "mode"},\
68  { "addition", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_ADDITION}, 0, 0, FLAGS, "mode" },\
69  { "addition128","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINMERGE}, 0, 0, FLAGS, "mode" },\
70  { "grainmerge", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINMERGE}, 0, 0, FLAGS, "mode" },\
71  { "and", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_AND}, 0, 0, FLAGS, "mode" },\
72  { "average", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_AVERAGE}, 0, 0, FLAGS, "mode" },\
73  { "burn", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_BURN}, 0, 0, FLAGS, "mode" },\
74  { "darken", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DARKEN}, 0, 0, FLAGS, "mode" },\
75  { "difference", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DIFFERENCE}, 0, 0, FLAGS, "mode" },\
76  { "difference128", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINEXTRACT}, 0, 0, FLAGS, "mode" },\
77  { "grainextract", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINEXTRACT}, 0, 0, FLAGS, "mode" },\
78  { "divide", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DIVIDE}, 0, 0, FLAGS, "mode" },\
79  { "dodge", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DODGE}, 0, 0, FLAGS, "mode" },\
80  { "exclusion", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_EXCLUSION}, 0, 0, FLAGS, "mode" },\
81  { "extremity", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_EXTREMITY}, 0, 0, FLAGS, "mode" },\
82  { "freeze", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_FREEZE}, 0, 0, FLAGS, "mode" },\
83  { "glow", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GLOW}, 0, 0, FLAGS, "mode" },\
84  { "hardlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARDLIGHT}, 0, 0, FLAGS, "mode" },\
85  { "hardmix", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARDMIX}, 0, 0, FLAGS, "mode" },\
86  { "heat", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HEAT}, 0, 0, FLAGS, "mode" },\
87  { "lighten", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_LIGHTEN}, 0, 0, FLAGS, "mode" },\
88  { "linearlight","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_LINEARLIGHT},0, 0, FLAGS, "mode" },\
89  { "multiply", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_MULTIPLY}, 0, 0, FLAGS, "mode" },\
90  { "multiply128","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_MULTIPLY128},0, 0, FLAGS, "mode" },\
91  { "negation", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_NEGATION}, 0, 0, FLAGS, "mode" },\
92  { "normal", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_NORMAL}, 0, 0, FLAGS, "mode" },\
93  { "or", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_OR}, 0, 0, FLAGS, "mode" },\
94  { "overlay", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_OVERLAY}, 0, 0, FLAGS, "mode" },\
95  { "phoenix", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_PHOENIX}, 0, 0, FLAGS, "mode" },\
96  { "pinlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_PINLIGHT}, 0, 0, FLAGS, "mode" },\
97  { "reflect", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_REFLECT}, 0, 0, FLAGS, "mode" },\
98  { "screen", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SCREEN}, 0, 0, FLAGS, "mode" },\
99  { "softlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SOFTLIGHT}, 0, 0, FLAGS, "mode" },\
100  { "subtract", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SUBTRACT}, 0, 0, FLAGS, "mode" },\
101  { "vividlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_VIVIDLIGHT}, 0, 0, FLAGS, "mode" },\
102  { "xor", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_XOR}, 0, 0, FLAGS, "mode" },\
103  { "c0_expr", "set color component #0 expression", OFFSET(params[0].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },\
104  { "c1_expr", "set color component #1 expression", OFFSET(params[1].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },\
105  { "c2_expr", "set color component #2 expression", OFFSET(params[2].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },\
106  { "c3_expr", "set color component #3 expression", OFFSET(params[3].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },\
107  { "all_expr", "set expression for all color components", OFFSET(all_expr), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },\
108  { "c0_opacity", "set color component #0 opacity", OFFSET(params[0].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },\
109  { "c1_opacity", "set color component #1 opacity", OFFSET(params[1].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },\
110  { "c2_opacity", "set color component #2 opacity", OFFSET(params[2].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },\
111  { "c3_opacity", "set color component #3 opacity", OFFSET(params[3].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },\
112  { "all_opacity", "set opacity for all color components", OFFSET(all_opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS}
113 
114 #define OFFSET(x) offsetof(BlendContext, x)
115 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
116 
117 static const AVOption blend_options[] = {
118  COMMON_OPTIONS,
119  { NULL }
120 };
121 
122 FRAMESYNC_DEFINE_CLASS(blend, BlendContext, fs);
123 
124 #define COPY(src) \
125 static void blend_copy ## src(const uint8_t *top, ptrdiff_t top_linesize, \
126  const uint8_t *bottom, ptrdiff_t bottom_linesize,\
127  uint8_t *dst, ptrdiff_t dst_linesize, \
128  ptrdiff_t width, ptrdiff_t height, \
129  FilterParams *param, double *values, int starty) \
130 { \
131  av_image_copy_plane(dst, dst_linesize, src, src ## _linesize, \
132  width, height); \
133 }
134 
135 COPY(top)
136 COPY(bottom)
137 
138 #undef COPY
139 
140 static void blend_normal_8bit(const uint8_t *top, ptrdiff_t top_linesize,
141  const uint8_t *bottom, ptrdiff_t bottom_linesize,
142  uint8_t *dst, ptrdiff_t dst_linesize,
143  ptrdiff_t width, ptrdiff_t height,
144  FilterParams *param, double *values, int starty)
145 {
146  const double opacity = param->opacity;
147  int i, j;
148 
149  for (i = 0; i < height; i++) {
150  for (j = 0; j < width; j++) {
151  dst[j] = top[j] * opacity + bottom[j] * (1. - opacity);
152  }
153  dst += dst_linesize;
154  top += top_linesize;
155  bottom += bottom_linesize;
156  }
157 }
158 
159 static void blend_normal_16bit(const uint8_t *_top, ptrdiff_t top_linesize,
160  const uint8_t *_bottom, ptrdiff_t bottom_linesize,
161  uint8_t *_dst, ptrdiff_t dst_linesize,
162  ptrdiff_t width, ptrdiff_t height,
163  FilterParams *param, double *values, int starty)
164 {
165  const uint16_t *top = (uint16_t*)_top;
166  const uint16_t *bottom = (uint16_t*)_bottom;
167  uint16_t *dst = (uint16_t*)_dst;
168  const double opacity = param->opacity;
169  int i, j;
170  dst_linesize /= 2;
171  top_linesize /= 2;
172  bottom_linesize /= 2;
173 
174  for (i = 0; i < height; i++) {
175  for (j = 0; j < width; j++) {
176  dst[j] = top[j] * opacity + bottom[j] * (1. - opacity);
177  }
178  dst += dst_linesize;
179  top += top_linesize;
180  bottom += bottom_linesize;
181  }
182 }
183 
184 #define DEFINE_BLEND8(name, expr) \
185 static void blend_## name##_8bit(const uint8_t *top, ptrdiff_t top_linesize, \
186  const uint8_t *bottom, ptrdiff_t bottom_linesize, \
187  uint8_t *dst, ptrdiff_t dst_linesize, \
188  ptrdiff_t width, ptrdiff_t height, \
189  FilterParams *param, double *values, int starty) \
190 { \
191  double opacity = param->opacity; \
192  int i, j; \
193  \
194  for (i = 0; i < height; i++) { \
195  for (j = 0; j < width; j++) { \
196  dst[j] = top[j] + ((expr) - top[j]) * opacity; \
197  } \
198  dst += dst_linesize; \
199  top += top_linesize; \
200  bottom += bottom_linesize; \
201  } \
202 }
203 
204 #define DEFINE_BLEND16(name, expr) \
205 static void blend_## name##_16bit(const uint8_t *_top, ptrdiff_t top_linesize, \
206  const uint8_t *_bottom, ptrdiff_t bottom_linesize, \
207  uint8_t *_dst, ptrdiff_t dst_linesize, \
208  ptrdiff_t width, ptrdiff_t height, \
209  FilterParams *param, double *values, int starty) \
210 { \
211  const uint16_t *top = (uint16_t*)_top; \
212  const uint16_t *bottom = (uint16_t*)_bottom; \
213  uint16_t *dst = (uint16_t*)_dst; \
214  double opacity = param->opacity; \
215  int i, j; \
216  dst_linesize /= 2; \
217  top_linesize /= 2; \
218  bottom_linesize /= 2; \
219  \
220  for (i = 0; i < height; i++) { \
221  for (j = 0; j < width; j++) { \
222  dst[j] = top[j] + ((expr) - top[j]) * opacity; \
223  } \
224  dst += dst_linesize; \
225  top += top_linesize; \
226  bottom += bottom_linesize; \
227  } \
228 }
229 
230 #define A top[j]
231 #define B bottom[j]
232 
233 #define MULTIPLY(x, a, b) ((x) * (((a) * (b)) / 255))
234 #define SCREEN(x, a, b) (255 - (x) * ((255 - (a)) * (255 - (b)) / 255))
235 #define BURN(a, b) (((a) == 0) ? (a) : FFMAX(0, 255 - ((255 - (b)) << 8) / (a)))
236 #define DODGE(a, b) (((a) == 255) ? (a) : FFMIN(255, (((b) << 8) / (255 - (a)))))
237 
238 DEFINE_BLEND8(addition, FFMIN(255, A + B))
239 DEFINE_BLEND8(grainmerge, av_clip_uint8(A + B - 128))
240 DEFINE_BLEND8(average, (A + B) / 2)
241 DEFINE_BLEND8(subtract, FFMAX(0, A - B))
242 DEFINE_BLEND8(multiply, MULTIPLY(1, A, B))
243 DEFINE_BLEND8(multiply128,av_clip_uint8((A - 128) * B / 32. + 128))
244 DEFINE_BLEND8(negation, 255 - FFABS(255 - A - B))
245 DEFINE_BLEND8(extremity, FFABS(255 - A - B))
246 DEFINE_BLEND8(difference, FFABS(A - B))
247 DEFINE_BLEND8(grainextract, av_clip_uint8(128 + A - B))
248 DEFINE_BLEND8(screen, SCREEN(1, A, B))
249 DEFINE_BLEND8(overlay, (A < 128) ? MULTIPLY(2, A, B) : SCREEN(2, A, B))
250 DEFINE_BLEND8(hardlight, (B < 128) ? MULTIPLY(2, B, A) : SCREEN(2, B, A))
251 DEFINE_BLEND8(hardmix, (A < (255 - B)) ? 0: 255)
252 DEFINE_BLEND8(heat, (A == 0) ? 0 : 255 - FFMIN(((255 - B) * (255 - B)) / A, 255))
253 DEFINE_BLEND8(freeze, (B == 0) ? 0 : 255 - FFMIN(((255 - A) * (255 - A)) / B, 255))
254 DEFINE_BLEND8(darken, FFMIN(A, B))
255 DEFINE_BLEND8(lighten, FFMAX(A, B))
256 DEFINE_BLEND8(divide, av_clip_uint8(B == 0 ? 255 : 255 * A / B))
257 DEFINE_BLEND8(dodge, DODGE(A, B))
258 DEFINE_BLEND8(burn, BURN(A, B))
259 DEFINE_BLEND8(softlight, (A > 127) ? B + (255 - B) * (A - 127.5) / 127.5 * (0.5 - fabs(B - 127.5) / 255): B - B * ((127.5 - A) / 127.5) * (0.5 - fabs(B - 127.5)/255))
260 DEFINE_BLEND8(exclusion, A + B - 2 * A * B / 255)
261 DEFINE_BLEND8(pinlight, (B < 128) ? FFMIN(A, 2 * B) : FFMAX(A, 2 * (B - 128)))
262 DEFINE_BLEND8(phoenix, FFMIN(A, B) - FFMAX(A, B) + 255)
263 DEFINE_BLEND8(reflect, (B == 255) ? B : FFMIN(255, (A * A / (255 - B))))
264 DEFINE_BLEND8(glow, (A == 255) ? A : FFMIN(255, (B * B / (255 - A))))
265 DEFINE_BLEND8(and, A & B)
266 DEFINE_BLEND8(or, A | B)
267 DEFINE_BLEND8(xor, A ^ B)
268 DEFINE_BLEND8(vividlight, (A < 128) ? BURN(2 * A, B) : DODGE(2 * (A - 128), B))
269 DEFINE_BLEND8(linearlight,av_clip_uint8((B < 128) ? B + 2 * A - 255 : B + 2 * (A - 128)))
270 
271 #undef MULTIPLY
272 #undef SCREEN
273 #undef BURN
274 #undef DODGE
275 
276 #define MULTIPLY(x, a, b) ((x) * (((a) * (b)) / 65535))
277 #define SCREEN(x, a, b) (65535 - (x) * ((65535 - (a)) * (65535 - (b)) / 65535))
278 #define BURN(a, b) (((a) == 0) ? (a) : FFMAX(0, 65535 - ((65535 - (b)) << 16) / (a)))
279 #define DODGE(a, b) (((a) == 65535) ? (a) : FFMIN(65535, (((b) << 16) / (65535 - (a)))))
280 
281 DEFINE_BLEND16(addition, FFMIN(65535, A + B))
282 DEFINE_BLEND16(grainmerge, av_clip_uint16(A + B - 32768))
283 DEFINE_BLEND16(average, (A + B) / 2)
284 DEFINE_BLEND16(subtract, FFMAX(0, A - B))
285 DEFINE_BLEND16(multiply, MULTIPLY(1, A, B))
286 DEFINE_BLEND16(multiply128, av_clip_uint16((A - 32768) * B / 8192. + 32768))
287 DEFINE_BLEND16(negation, 65535 - FFABS(65535 - A - B))
288 DEFINE_BLEND16(extremity, FFABS(65535 - A - B))
289 DEFINE_BLEND16(difference, FFABS(A - B))
290 DEFINE_BLEND16(grainextract, av_clip_uint16(32768 + A - B))
291 DEFINE_BLEND16(screen, SCREEN(1, A, B))
292 DEFINE_BLEND16(overlay, (A < 32768) ? MULTIPLY(2, A, B) : SCREEN(2, A, B))
293 DEFINE_BLEND16(hardlight, (B < 32768) ? MULTIPLY(2, B, A) : SCREEN(2, B, A))
294 DEFINE_BLEND16(hardmix, (A < (65535 - B)) ? 0: 65535)
295 DEFINE_BLEND16(heat, (A == 0) ? 0 : 65535 - FFMIN(((65535 - B) * (65535 - B)) / A, 65535))
296 DEFINE_BLEND16(freeze, (B == 0) ? 0 : 65535 - FFMIN(((65535 - A) * (65535 - A)) / B, 65535))
297 DEFINE_BLEND16(darken, FFMIN(A, B))
298 DEFINE_BLEND16(lighten, FFMAX(A, B))
299 DEFINE_BLEND16(divide, av_clip_uint16(B == 0 ? 65535 : 65535 * A / B))
300 DEFINE_BLEND16(dodge, DODGE(A, B))
301 DEFINE_BLEND16(burn, BURN(A, B))
302 DEFINE_BLEND16(softlight, (A > 32767) ? B + (65535 - B) * (A - 32767.5) / 32767.5 * (0.5 - fabs(B - 32767.5) / 65535): B - B * ((32767.5 - A) / 32767.5) * (0.5 - fabs(B - 32767.5)/65535))
303 DEFINE_BLEND16(exclusion, A + B - 2 * A * B / 65535)
304 DEFINE_BLEND16(pinlight, (B < 32768) ? FFMIN(A, 2 * B) : FFMAX(A, 2 * (B - 32768)))
305 DEFINE_BLEND16(phoenix, FFMIN(A, B) - FFMAX(A, B) + 65535)
306 DEFINE_BLEND16(reflect, (B == 65535) ? B : FFMIN(65535, (A * A / (65535 - B))))
307 DEFINE_BLEND16(glow, (A == 65535) ? A : FFMIN(65535, (B * B / (65535 - A))))
308 DEFINE_BLEND16(and, A & B)
309 DEFINE_BLEND16(or, A | B)
310 DEFINE_BLEND16(xor, A ^ B)
311 DEFINE_BLEND16(vividlight, (A < 32768) ? BURN(2 * A, B) : DODGE(2 * (A - 32768), B))
312 DEFINE_BLEND16(linearlight,av_clip_uint16((B < 32768) ? B + 2 * A - 65535 : B + 2 * (A - 32768)))
313 
314 #define DEFINE_BLEND_EXPR(type, name, div) \
315 static void blend_expr_## name(const uint8_t *_top, ptrdiff_t top_linesize, \
316  const uint8_t *_bottom, ptrdiff_t bottom_linesize, \
317  uint8_t *_dst, ptrdiff_t dst_linesize, \
318  ptrdiff_t width, ptrdiff_t height, \
319  FilterParams *param, double *values, int starty) \
320 { \
321  const type *top = (type*)_top; \
322  const type *bottom = (type*)_bottom; \
323  type *dst = (type*)_dst; \
324  AVExpr *e = param->e; \
325  int y, x; \
326  dst_linesize /= div; \
327  top_linesize /= div; \
328  bottom_linesize /= div; \
329  \
330  for (y = 0; y < height; y++) { \
331  values[VAR_Y] = y + starty; \
332  for (x = 0; x < width; x++) { \
333  values[VAR_X] = x; \
334  values[VAR_TOP] = values[VAR_A] = top[x]; \
335  values[VAR_BOTTOM] = values[VAR_B] = bottom[x]; \
336  dst[x] = av_expr_eval(e, values, NULL); \
337  } \
338  dst += dst_linesize; \
339  top += top_linesize; \
340  bottom += bottom_linesize; \
341  } \
342 }
343 
344 DEFINE_BLEND_EXPR(uint8_t, 8bit, 1)
345 DEFINE_BLEND_EXPR(uint16_t, 16bit, 2)
346 
347 static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
348 {
349  ThreadData *td = arg;
350  int slice_start = (td->h * jobnr ) / nb_jobs;
351  int slice_end = (td->h * (jobnr+1)) / nb_jobs;
352  int height = slice_end - slice_start;
353  const uint8_t *top = td->top->data[td->plane];
354  const uint8_t *bottom = td->bottom->data[td->plane];
355  uint8_t *dst = td->dst->data[td->plane];
356  double values[VAR_VARS_NB];
357 
358  values[VAR_N] = td->inlink->frame_count_out;
359  values[VAR_T] = td->dst->pts == AV_NOPTS_VALUE ? NAN : td->dst->pts * av_q2d(td->inlink->time_base);
360  values[VAR_W] = td->w;
361  values[VAR_H] = td->h;
362  values[VAR_SW] = td->w / (double)td->dst->width;
363  values[VAR_SH] = td->h / (double)td->dst->height;
364 
365  td->param->blend(top + slice_start * td->top->linesize[td->plane],
366  td->top->linesize[td->plane],
367  bottom + slice_start * td->bottom->linesize[td->plane],
368  td->bottom->linesize[td->plane],
369  dst + slice_start * td->dst->linesize[td->plane],
370  td->dst->linesize[td->plane],
371  td->w, height, td->param, &values[0], slice_start);
372  return 0;
373 }
374 
375 static AVFrame *blend_frame(AVFilterContext *ctx, AVFrame *top_buf,
376  const AVFrame *bottom_buf)
377 {
378  BlendContext *s = ctx->priv;
379  AVFilterLink *inlink = ctx->inputs[0];
380  AVFilterLink *outlink = ctx->outputs[0];
381  AVFrame *dst_buf;
382  int plane;
383 
384  dst_buf = ff_get_video_buffer(outlink, outlink->w, outlink->h);
385  if (!dst_buf)
386  return top_buf;
387  av_frame_copy_props(dst_buf, top_buf);
388 
389  for (plane = 0; plane < s->nb_planes; plane++) {
390  int hsub = plane == 1 || plane == 2 ? s->hsub : 0;
391  int vsub = plane == 1 || plane == 2 ? s->vsub : 0;
392  int outw = AV_CEIL_RSHIFT(dst_buf->width, hsub);
393  int outh = AV_CEIL_RSHIFT(dst_buf->height, vsub);
394  FilterParams *param = &s->params[plane];
395  ThreadData td = { .top = top_buf, .bottom = bottom_buf, .dst = dst_buf,
396  .w = outw, .h = outh, .param = param, .plane = plane,
397  .inlink = inlink };
398 
399  ctx->internal->execute(ctx, filter_slice, &td, NULL, FFMIN(outh, ff_filter_get_nb_threads(ctx)));
400  }
401 
402  if (!s->tblend)
403  av_frame_free(&top_buf);
404 
405  return dst_buf;
406 }
407 
408 static int blend_frame_for_dualinput(FFFrameSync *fs)
409 {
410  AVFilterContext *ctx = fs->parent;
411  AVFrame *top_buf, *bottom_buf, *dst_buf;
412  int ret;
413 
414  ret = ff_framesync_dualinput_get(fs, &top_buf, &bottom_buf);
415  if (ret < 0)
416  return ret;
417  if (!bottom_buf)
418  return ff_filter_frame(ctx->outputs[0], top_buf);
419  dst_buf = blend_frame(ctx, top_buf, bottom_buf);
420  return ff_filter_frame(ctx->outputs[0], dst_buf);
421 }
422 
423 static av_cold int init(AVFilterContext *ctx)
424 {
425  BlendContext *s = ctx->priv;
426 
427  s->tblend = !strcmp(ctx->filter->name, "tblend");
428 
429  s->fs.on_event = blend_frame_for_dualinput;
430  return 0;
431 }
432 
433 static int query_formats(AVFilterContext *ctx)
434 {
435  static const enum AVPixelFormat pix_fmts[] = {
436  AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA420P,
437  AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ422P,AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ411P,
438  AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
439  AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP, AV_PIX_FMT_GRAY8,
440  AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
441  AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
442  AV_PIX_FMT_GBRP16, AV_PIX_FMT_GBRAP16, AV_PIX_FMT_GRAY16,
443  AV_PIX_FMT_NONE
444  };
445 
446  AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
447  if (!fmts_list)
448  return AVERROR(ENOMEM);
449  return ff_set_common_formats(ctx, fmts_list);
450 }
451 
452 static av_cold void uninit(AVFilterContext *ctx)
453 {
454  BlendContext *s = ctx->priv;
455  int i;
456 
457  ff_framesync_uninit(&s->fs);
458  av_frame_free(&s->prev_frame);
459 
460  for (i = 0; i < FF_ARRAY_ELEMS(s->params); i++)
461  av_expr_free(s->params[i].e);
462 }
463 
464 void ff_blend_init(FilterParams *param, int is_16bit)
465 {
466  switch (param->mode) {
467  case BLEND_ADDITION: param->blend = is_16bit ? blend_addition_16bit : blend_addition_8bit; break;
468  case BLEND_GRAINMERGE: param->blend = is_16bit ? blend_grainmerge_16bit : blend_grainmerge_8bit; break;
469  case BLEND_AND: param->blend = is_16bit ? blend_and_16bit : blend_and_8bit; break;
470  case BLEND_AVERAGE: param->blend = is_16bit ? blend_average_16bit : blend_average_8bit; break;
471  case BLEND_BURN: param->blend = is_16bit ? blend_burn_16bit : blend_burn_8bit; break;
472  case BLEND_DARKEN: param->blend = is_16bit ? blend_darken_16bit : blend_darken_8bit; break;
473  case BLEND_DIFFERENCE: param->blend = is_16bit ? blend_difference_16bit : blend_difference_8bit; break;
474  case BLEND_GRAINEXTRACT: param->blend = is_16bit ? blend_grainextract_16bit: blend_grainextract_8bit; break;
475  case BLEND_DIVIDE: param->blend = is_16bit ? blend_divide_16bit : blend_divide_8bit; break;
476  case BLEND_DODGE: param->blend = is_16bit ? blend_dodge_16bit : blend_dodge_8bit; break;
477  case BLEND_EXCLUSION: param->blend = is_16bit ? blend_exclusion_16bit : blend_exclusion_8bit; break;
478  case BLEND_EXTREMITY: param->blend = is_16bit ? blend_extremity_16bit : blend_extremity_8bit; break;
479  case BLEND_FREEZE: param->blend = is_16bit ? blend_freeze_16bit : blend_freeze_8bit; break;
480  case BLEND_GLOW: param->blend = is_16bit ? blend_glow_16bit : blend_glow_8bit; break;
481  case BLEND_HARDLIGHT: param->blend = is_16bit ? blend_hardlight_16bit : blend_hardlight_8bit; break;
482  case BLEND_HARDMIX: param->blend = is_16bit ? blend_hardmix_16bit : blend_hardmix_8bit; break;
483  case BLEND_HEAT: param->blend = is_16bit ? blend_heat_16bit : blend_heat_8bit; break;
484  case BLEND_LIGHTEN: param->blend = is_16bit ? blend_lighten_16bit : blend_lighten_8bit; break;
485  case BLEND_LINEARLIGHT:param->blend = is_16bit ? blend_linearlight_16bit: blend_linearlight_8bit;break;
486  case BLEND_MULTIPLY: param->blend = is_16bit ? blend_multiply_16bit : blend_multiply_8bit; break;
487  case BLEND_MULTIPLY128:param->blend = is_16bit ? blend_multiply128_16bit: blend_multiply128_8bit;break;
488  case BLEND_NEGATION: param->blend = is_16bit ? blend_negation_16bit : blend_negation_8bit; break;
489  case BLEND_NORMAL: param->blend = param->opacity == 1 ? blend_copytop :
490  param->opacity == 0 ? blend_copybottom :
491  is_16bit ? blend_normal_16bit : blend_normal_8bit; break;
492  case BLEND_OR: param->blend = is_16bit ? blend_or_16bit : blend_or_8bit; break;
493  case BLEND_OVERLAY: param->blend = is_16bit ? blend_overlay_16bit : blend_overlay_8bit; break;
494  case BLEND_PHOENIX: param->blend = is_16bit ? blend_phoenix_16bit : blend_phoenix_8bit; break;
495  case BLEND_PINLIGHT: param->blend = is_16bit ? blend_pinlight_16bit : blend_pinlight_8bit; break;
496  case BLEND_REFLECT: param->blend = is_16bit ? blend_reflect_16bit : blend_reflect_8bit; break;
497  case BLEND_SCREEN: param->blend = is_16bit ? blend_screen_16bit : blend_screen_8bit; break;
498  case BLEND_SOFTLIGHT: param->blend = is_16bit ? blend_softlight_16bit : blend_softlight_8bit; break;
499  case BLEND_SUBTRACT: param->blend = is_16bit ? blend_subtract_16bit : blend_subtract_8bit; break;
500  case BLEND_VIVIDLIGHT: param->blend = is_16bit ? blend_vividlight_16bit : blend_vividlight_8bit; break;
501  case BLEND_XOR: param->blend = is_16bit ? blend_xor_16bit : blend_xor_8bit; break;
502  }
503 
504  if (param->opacity == 0 && param->mode != BLEND_NORMAL) {
505  param->blend = blend_copytop;
506  }
507 
508  if (ARCH_X86)
509  ff_blend_init_x86(param, is_16bit);
510 }
511 
512 static int config_output(AVFilterLink *outlink)
513 {
514  AVFilterContext *ctx = outlink->src;
515  AVFilterLink *toplink = ctx->inputs[TOP];
516  BlendContext *s = ctx->priv;
517  const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(toplink->format);
518  int ret, plane, is_16bit;
519 
520  if (!s->tblend) {
521  AVFilterLink *bottomlink = ctx->inputs[BOTTOM];
522 
523  if (toplink->format != bottomlink->format) {
524  av_log(ctx, AV_LOG_ERROR, "inputs must be of same pixel format\n");
525  return AVERROR(EINVAL);
526  }
527  if (toplink->w != bottomlink->w ||
528  toplink->h != bottomlink->h ||
529  toplink->sample_aspect_ratio.num != bottomlink->sample_aspect_ratio.num ||
530  toplink->sample_aspect_ratio.den != bottomlink->sample_aspect_ratio.den) {
531  av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
532  "(size %dx%d, SAR %d:%d) do not match the corresponding "
533  "second input link %s parameters (%dx%d, SAR %d:%d)\n",
534  ctx->input_pads[TOP].name, toplink->w, toplink->h,
535  toplink->sample_aspect_ratio.num,
536  toplink->sample_aspect_ratio.den,
537  ctx->input_pads[BOTTOM].name, bottomlink->w, bottomlink->h,
538  bottomlink->sample_aspect_ratio.num,
539  bottomlink->sample_aspect_ratio.den);
540  return AVERROR(EINVAL);
541  }
542  }
543 
544  outlink->w = toplink->w;
545  outlink->h = toplink->h;
546  outlink->time_base = toplink->time_base;
547  outlink->sample_aspect_ratio = toplink->sample_aspect_ratio;
548  outlink->frame_rate = toplink->frame_rate;
549 
550  s->hsub = pix_desc->log2_chroma_w;
551  s->vsub = pix_desc->log2_chroma_h;
552 
553  is_16bit = pix_desc->comp[0].depth == 16;
554  s->nb_planes = av_pix_fmt_count_planes(toplink->format);
555 
556  if (!s->tblend)
557  if ((ret = ff_framesync_init_dualinput(&s->fs, ctx)) < 0)
558  return ret;
559 
560  for (plane = 0; plane < FF_ARRAY_ELEMS(s->params); plane++) {
561  FilterParams *param = &s->params[plane];
562 
563  if (s->all_mode >= 0)
564  param->mode = s->all_mode;
565  if (s->all_opacity < 1)
566  param->opacity = s->all_opacity;
567 
568  ff_blend_init(param, is_16bit);
569 
570  if (s->all_expr && !param->expr_str) {
571  param->expr_str = av_strdup(s->all_expr);
572  if (!param->expr_str)
573  return AVERROR(ENOMEM);
574  }
575  if (param->expr_str) {
576  ret = av_expr_parse(&param->e, param->expr_str, var_names,
577  NULL, NULL, NULL, NULL, 0, ctx);
578  if (ret < 0)
579  return ret;
580  param->blend = is_16bit? blend_expr_16bit : blend_expr_8bit;
581  }
582  }
583 
584  return s->tblend ? 0 : ff_framesync_configure(&s->fs);
585 }
586 
587 #if CONFIG_BLEND_FILTER
588 
589 static int activate(AVFilterContext *ctx)
590 {
591  BlendContext *s = ctx->priv;
592  return ff_framesync_activate(&s->fs);
593 }
594 
595 static const AVFilterPad blend_inputs[] = {
596  {
597  .name = "top",
598  .type = AVMEDIA_TYPE_VIDEO,
599  },{
600  .name = "bottom",
601  .type = AVMEDIA_TYPE_VIDEO,
602  },
603  { NULL }
604 };
605 
606 static const AVFilterPad blend_outputs[] = {
607  {
608  .name = "default",
609  .type = AVMEDIA_TYPE_VIDEO,
610  .config_props = config_output,
611  },
612  { NULL }
613 };
614 
615 AVFilter ff_vf_blend = {
616  .name = "blend",
617  .description = NULL_IF_CONFIG_SMALL("Blend two video frames into each other."),
618  .preinit = blend_framesync_preinit,
619  .init = init,
620  .uninit = uninit,
621  .priv_size = sizeof(BlendContext),
622  .query_formats = query_formats,
623  .activate = activate,
624  .inputs = blend_inputs,
625  .outputs = blend_outputs,
626  .priv_class = &blend_class,
627  .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
628 };
629 
630 #endif
631 
632 #if CONFIG_TBLEND_FILTER
633 
634 static int tblend_filter_frame(AVFilterLink *inlink, AVFrame *frame)
635 {
636  BlendContext *s = inlink->dst->priv;
637  AVFilterLink *outlink = inlink->dst->outputs[0];
638 
639  if (s->prev_frame) {
640  AVFrame *out = blend_frame(inlink->dst, frame, s->prev_frame);
641  av_frame_free(&s->prev_frame);
642  s->prev_frame = frame;
643  return ff_filter_frame(outlink, out);
644  }
645  s->prev_frame = frame;
646  return 0;
647 }
648 
649 static const AVOption tblend_options[] = {
650  COMMON_OPTIONS,
651  { NULL }
652 };
653 
654 AVFILTER_DEFINE_CLASS(tblend);
655 
656 static const AVFilterPad tblend_inputs[] = {
657  {
658  .name = "default",
659  .type = AVMEDIA_TYPE_VIDEO,
660  .filter_frame = tblend_filter_frame,
661  },
662  { NULL }
663 };
664 
665 static const AVFilterPad tblend_outputs[] = {
666  {
667  .name = "default",
668  .type = AVMEDIA_TYPE_VIDEO,
669  .config_props = config_output,
670  },
671  { NULL }
672 };
673 
674 AVFilter ff_vf_tblend = {
675  .name = "tblend",
676  .description = NULL_IF_CONFIG_SMALL("Blend successive frames."),
677  .priv_size = sizeof(BlendContext),
678  .priv_class = &tblend_class,
679  .query_formats = query_formats,
680  .init = init,
681  .uninit = uninit,
682  .inputs = tblend_inputs,
683  .outputs = tblend_outputs,
684  .flags = AVFILTER_FLAG_SLICE_THREADS,
685 };
686 
687 #endif
plane
int plane
Definition: avisynth_c.h:422
FilterParams::e
AVExpr * e
Definition: blend.h:68
TOP
#define TOP
Definition: vf_blend.c:33
NULL
#define NULL
Definition: coverity.c:32
AV_PIX_FMT_YUVA422P16
#define AV_PIX_FMT_YUVA422P16
Definition: pixfmt.h:418
s
const char * s
Definition: avisynth_c.h:768
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2419
VAR_B
Definition: vf_blend.c:51
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:201
FilterParams::opacity
double opacity
Definition: blend.h:67
AVOption
AVOption.
Definition: opt.h:246
VAR_VARS_NB
Definition: vf_blend.c:51
BlendContext::all_mode
enum BlendMode all_mode
Definition: vf_blend.c:42
AV_PIX_FMT_YUV444P
planar YUV 4:4:4, 24bpp, (1 Cr & Cb sample per 1x1 Y samples)
Definition: pixfmt.h:67
imgutils.h
misc image utilities
blend_normal_16bit
static void blend_normal_16bit(const uint8_t *_top, ptrdiff_t top_linesize, const uint8_t *_bottom, ptrdiff_t bottom_linesize, uint8_t *_dst, ptrdiff_t dst_linesize, ptrdiff_t width, ptrdiff_t height, FilterParams *param, double *values, int starty)
Definition: vf_blend.c:159
av_pix_fmt_count_planes
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2459
avfilter.h
Main libavfilter public API header.
BOTTOM
#define BOTTOM
Definition: vf_blend.c:34
FFFrameSync::on_event
int(* on_event)(struct FFFrameSync *fs)
Callback called when a frame event is ready.
Definition: framesync.h:172
AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:180
AVRational::num
int num
Numerator.
Definition: rational.h:59
var_names
static const char *const var_names[]
Definition: vf_blend.c:50
ff_framesync_configure
int ff_framesync_configure(FFFrameSync *fs)
Configure a frame sync structure.
Definition: framesync.c:117
av_expr_parse
int av_expr_parse(AVExpr **expr, const char *s, const char *const *const_names, const char *const *func1_names, double(*const *funcs1)(void *, double), const char *const *func2_names, double(*const *funcs2)(void *, double, double), int log_offset, void *log_ctx)
Parse an expression.
Definition: eval.c:672
ff_get_video_buffer
AVFrame * ff_get_video_buffer(AVFilterLink *link, int w, int h)
Request a picture buffer with a specific set of permissions.
Definition: video.c:92
filter_slice
static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
Definition: vf_bwdif.c:216
AVPixFmtDescriptor::log2_chroma_w
uint8_t log2_chroma_w
Amount to shift the luma width right to find the chroma width.
Definition: pixdesc.h:92
VAR_H
Definition: vf_blend.c:51
BlendContext::tblend
int tblend
Definition: vf_blend.c:46
ff_make_format_list
AVFilterFormats * ff_make_format_list(const int *fmts)
Create a list of supported formats.
Definition: formats.c:283
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:60
FFFrameSync::parent
AVFilterContext * parent
Parent filter context.
Definition: framesync.h:152
AVFilterContext::inputs
AVFilterLink ** inputs
array of pointers to input links
Definition: avfilter.h:346
ff_blend_init
void ff_blend_init(FilterParams *param, int is_16bit)
Definition: vf_blend.c:464
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1151
activate
static int activate(AVFilterContext *ctx)
Definition: af_amix.c:404
AV_PIX_FMT_YUVA420P
planar YUV 4:2:0, 20bpp, (1 Cr & Cb sample per 2x2 Y & A samples)
Definition: pixfmt.h:102
AVPixFmtDescriptor::comp
AVComponentDescriptor comp[4]
Parameters that describe how pixels are packed.
Definition: pixdesc.h:117
uint8_t
uint8_t
Definition: audio_convert.c:194
FilterParams::expr_str
char * expr_str
Definition: blend.h:69
av_cold
#define av_cold
Definition: attributes.h:82
opt.h
AVOptions.
ff_framesync_init_dualinput
int ff_framesync_init_dualinput(FFFrameSync *fs, AVFilterContext *parent)
Initialize a frame sync structure for dualinput.
Definition: framesync.c:361
DEFINE_BLEND8
#define DEFINE_BLEND8(name, expr)
Definition: vf_blend.c:184
ff_framesync_dualinput_get
int ff_framesync_dualinput_get(FFFrameSync *fs, AVFrame **f0, AVFrame **f1)
Definition: framesync.c:379
AVFrame::pts
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:294
ThreadData::bottom
const AVFrame * bottom
Definition: vf_blend.c:54
frame
static AVFrame * frame
Definition: demuxing_decoding.c:53
height
#define height
FilterParams::mode
enum BlendMode mode
Definition: blend.h:66
ThreadData::plane
int plane
Definition: vf_blend.c:57
av_q2d
static double av_q2d(AVRational a)
Convert an AVRational to a double.
Definition: rational.h:104
AV_PIX_FMT_YUVJ440P
planar YUV 4:4:0 full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV440P and setting color_range...
Definition: pixfmt.h:101
flags
static int flags
Definition: log.c:57
AV_PIX_FMT_YUVJ422P
planar YUV 4:2:2, 16bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV422P and setting col...
Definition: pixfmt.h:75
query_formats
static int query_formats(AVFilterContext *ctx)
Definition: vf_blend.c:433
AV_PIX_FMT_YUV444P16
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:392
VAR_X
Definition: vf_blend.c:51
BlendContext::params
FilterParams params[4]
Definition: vf_blend.c:45
AV_PIX_FMT_YUVA420P16
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:417
VAR_Y
Definition: vf_blend.c:51
config_output
static int config_output(AVFilterLink *outlink)
Definition: vf_blend.c:512
av_log
#define av_log(a,...)
Definition: tableprint_vlc.h:28
BlendContext::prev_frame
AVFrame * prev_frame
Definition: vf_blend.c:47
AVFilterPad
A filter pad used for either input or output.
Definition: internal.h:54
VAR_BOTTOM
Definition: vf_blend.c:51
AVFilterContext::input_pads
AVFilterPad * input_pads
array of input pads
Definition: avfilter.h:345
AV_PIX_FMT_YUVA422P
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:188
AVFrame::width
int width
Definition: frame.h:259
AV_LOG_ERROR
#define AV_LOG_ERROR
Something went wrong and cannot losslessly be recovered.
Definition: log.h:176
ff_set_common_formats
int ff_set_common_formats(AVFilterContext *ctx, AVFilterFormats *formats)
A helper for query_formats() which sets all links to the same list of formats.
Definition: formats.c:568
td
#define td
Definition: regdef.h:70
init
static av_cold int init(AVFilterContext *ctx)
Definition: vf_blend.c:423
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_blend.c:452
AVPixFmtDescriptor::log2_chroma_h
uint8_t log2_chroma_h
Amount to shift the luma height right to find the chroma height.
Definition: pixdesc.h:101
ff_framesync_uninit
void ff_framesync_uninit(FFFrameSync *fs)
Free all memory currently allocated.
Definition: framesync.c:293
FFFrameSync
Frame sync structure.
Definition: framesync.h:146
AVERROR
#define AVERROR(e)
Definition: error.h:43
SCREEN
#define SCREEN(x, a, b)
Definition: vf_blend.c:234
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:163
NULL_IF_CONFIG_SMALL
#define NULL_IF_CONFIG_SMALL(x)
Return NULL if CONFIG_SMALL is true, otherwise the argument without modification. ...
Definition: internal.h:179
AVFilterContext::priv
void * priv
private data for use by the filter
Definition: avfilter.h:353
AVFILTER_FLAG_SLICE_THREADS
#define AVFILTER_FLAG_SLICE_THREADS
The filter supports multithreading by splitting frames into multiple parts and processing them concur...
Definition: avfilter.h:116
multiply
static SoftFloat_IEEE754 multiply(SoftFloat_IEEE754 a, SoftFloat_IEEE754 b)
multiply two softfloats and handle the rounding off
Definition: alsdec.c:1371
AV_PIX_FMT_YUVA444P16
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:419
arg
const char * arg
Definition: jacosubdec.c:66
params
GLenum GLint * params
Definition: opengl_enc.c:114
width
uint16_t width
Definition: gdv.c:47
ff_framesync_activate
int ff_framesync_activate(FFFrameSync *fs)
Examine the frames in the filter's input and try to produce output.
Definition: framesync.c:344
VAR_N
Definition: vf_blend.c:51
B
#define B
Definition: vf_blend.c:231
FFMAX
#define FFMAX(a, b)
Definition: common.h:94
AV_PIX_FMT_GBRAP16
#define AV_PIX_FMT_GBRAP16
Definition: pixfmt.h:401
VAR_T
Definition: vf_blend.c:51
VAR_TOP
Definition: vf_blend.c:51
AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:66
A
#define A
Definition: vf_blend.c:230
AV_PIX_FMT_GBRP16
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:398
ff_filter_get_nb_threads
int ff_filter_get_nb_threads(AVFilterContext *ctx)
Get number of threads for current filter instance.
Definition: avfilter.c:857
AV_PIX_FMT_GRAY16
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:363
FFMIN
#define FFMIN(a, b)
Definition: common.h:96
DEFINE_BLEND_EXPR
#define DEFINE_BLEND_EXPR(type, name, div)
DODGE
#define DODGE(a, b)
Definition: vf_blend.c:236
AV_PIX_FMT_YUVJ420P
planar YUV 4:2:0, 12bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV420P and setting col...
Definition: pixfmt.h:74
ctx
AVFormatContext * ctx
Definition: movenc.c:48
FFABS
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Definition: common.h:72
outputs
static const AVFilterPad outputs[]
Definition: af_afftfilt.c:389
FilterParams::blend
void(* blend)(const uint8_t *top, ptrdiff_t top_linesize, const uint8_t *bottom, ptrdiff_t bottom_linesize, uint8_t *dst, ptrdiff_t dst_linesize, ptrdiff_t width, ptrdiff_t height, struct FilterParams *param, double *values, int starty)
Definition: blend.h:70
ThreadData::param
FilterParams * param
Definition: vf_blend.c:59
FF_ARRAY_ELEMS
#define FF_ARRAY_ELEMS(a)
Definition: sinewin_tablegen_template.c:36
AV_PIX_FMT_YUV420P16
#define AV_PIX_FMT_YUV420P16
Definition: pixfmt.h:390
ThreadData::dst
AVFrame * dst
Definition: vf_blend.c:55
ff_blend_init_x86
void ff_blend_init_x86(FilterParams *param, int is_16bit)
Definition: vf_blend_init.c:55
inputs
static const AVFilterPad inputs[]
Definition: af_afftfilt.c:379
VAR_SW
Definition: vf_blend.c:51
DEFINE_BLEND16
#define DEFINE_BLEND16(name, expr)
Definition: vf_blend.c:204
av_strdup
char * av_strdup(const char *s)
Duplicate a string.
Definition: mem.c:237
VAR_W
Definition: vf_blend.c:51
av_expr_free
void av_expr_free(AVExpr *e)
Free a parsed expression previously created with av_expr_parse().
Definition: eval.c:327
blend_normal_8bit
static void blend_normal_8bit(const uint8_t *top, ptrdiff_t top_linesize, const uint8_t *bottom, ptrdiff_t bottom_linesize, uint8_t *dst, ptrdiff_t dst_linesize, ptrdiff_t width, ptrdiff_t height, FilterParams *param, double *values, int starty)
Definition: vf_blend.c:140
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:232
COPY
#define COPY(src)
Definition: vf_blend.c:124
AV_PIX_FMT_YUVA444P
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:189
AVPixFmtDescriptor
Descriptor that unambiguously describes how the bits of a pixel are stored in the up to 4 data planes...
Definition: pixdesc.h:81
BURN
#define BURN(a, b)
Definition: vf_blend.c:235
COMMON_OPTIONS
#define COMMON_OPTIONS
Definition: vf_blend.c:62
FilterParams
filter data
Definition: mlp.h:74
BlendContext::fs
FFFrameSync fs
Definition: vf_blend.c:38
blend_options
static const AVOption blend_options[]
Definition: vf_blend.c:117
FRAMESYNC_DEFINE_CLASS
FRAMESYNC_DEFINE_CLASS(blend, BlendContext, fs)
AV_PIX_FMT_YUV410P
planar YUV 4:1:0, 9bpp, (1 Cr & Cb sample per 4x4 Y samples)
Definition: pixfmt.h:68
AVClass
Describe the class of an AVClass context structure.
Definition: log.h:67
AVFilter
Filter definition.
Definition: avfilter.h:144
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:148
AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
#define AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL
Same as AVFILTER_FLAG_SUPPORT_TIMELINE_GENERIC, except that the filter will have its filter_frame() c...
Definition: avfilter.h:133
AVFilterContext::outputs
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:350
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:266
AVFilterContext::internal
AVFilterInternal * internal
An opaque struct for libavfilter internal use.
Definition: avfilter.h:378
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:215
VAR_A
Definition: vf_blend.c:51
MULTIPLY
#define MULTIPLY(x, a, b)
Definition: vf_blend.c:233
BlendContext::nb_planes
int nb_planes
Definition: vf_blend.c:40
BlendContext::all_expr
char * all_expr
Definition: vf_blend.c:41
AV_PIX_FMT_YUV420P
planar YUV 4:2:0, 12bpp, (1 Cr & Cb sample per 2x2 Y samples)
Definition: pixfmt.h:62
AV_PIX_FMT_GRAY8
Y , 8bpp.
Definition: pixfmt.h:70
BlendContext::vsub
int vsub
chroma subsampling values
Definition: vf_blend.c:39
BlendMode
BlendMode
Definition: blend.h:27
AV_PIX_FMT_GBRAP
planar GBRA 4:4:4:4 32bpp
Definition: pixfmt.h:229
BlendContext::all_opacity
double all_opacity
Definition: vf_blend.c:43
AV_PIX_FMT_YUVJ444P
planar YUV 4:4:4, 24bpp, full scale (JPEG), deprecated in favor of AV_PIX_FMT_YUV444P and setting col...
Definition: pixfmt.h:76
AV_PIX_FMT_YUV411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples)
Definition: pixfmt.h:69
AVRational::den
int den
Denominator.
Definition: rational.h:60
AVFilterInternal::execute
avfilter_execute_func * execute
Definition: internal.h:155
ThreadData::top
const AVFrame * top
Definition: vf_blend.c:54
slice_end
static int slice_end(AVCodecContext *avctx, AVFrame *pict)
Handle slice ends.
Definition: mpeg12dec.c:2052
pixfmt.h
pixel format definitions
NAN
#define NAN
Definition: math.h:28
AVFILTER_DEFINE_CLASS
#define AVFILTER_DEFINE_CLASS(fname)
Definition: internal.h:334
BLEND_OR
Definition: blend.h:44
blend_frame
static AVFrame * blend_frame(AVFilterContext *ctx, AVFrame *top_buf, const AVFrame *bottom_buf)
Definition: vf_blend.c:375
AVFilterFormats
A list of supported formats for one end of a filter link.
Definition: formats.h:64
AV_PIX_FMT_YUVJ411P
planar YUV 4:1:1, 12bpp, (1 Cr & Cb sample per 4x1 Y samples) full scale (JPEG), deprecated in favor ...
Definition: pixfmt.h:272
VAR_SH
Definition: vf_blend.c:51
blend_frame_for_dualinput
static int blend_frame_for_dualinput(FFFrameSync *fs)
Definition: vf_blend.c:408
AVFilterContext
An instance of a filter.
Definition: avfilter.h:338
AVFrame::height
int height
Definition: frame.h:259
out
FILE * out
Definition: movenc.c:54
AV_PIX_FMT_YUV440P
planar YUV 4:4:0 (1 Cr & Cb sample per 1x2 Y samples)
Definition: pixfmt.h:100
AVMEDIA_TYPE_VIDEO
Definition: avutil.h:201
ThreadData::inlink
AVFilterLink * inlink
Definition: vf_blend.c:56
internal.h
internal API functions
AVComponentDescriptor::depth
int depth
Number of bits in the component.
Definition: pixdesc.h:58
AVPixelFormat
AVPixelFormat
Pixel format.
Definition: pixfmt.h:60
AVFilterContext::filter
const AVFilter * filter
the AVFilter of which this is an instance
Definition: avfilter.h:341
AV_PIX_FMT_YUV422P16
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:391
av_frame_copy_props
int av_frame_copy_props(AVFrame *dst, const AVFrame *src)
Copy only "metadata" fields from src to dst.
Definition: frame.c:603
AV_NOPTS_VALUE
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:248
eval.h
simple arithmetic expression evaluator
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
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