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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 "internal.h"
29 #include "dualinput.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  FFDualInputContext dinput;
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_ADDITION128}, 0, 0, FLAGS, "mode" },\
70  { "and", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_AND}, 0, 0, FLAGS, "mode" },\
71  { "average", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_AVERAGE}, 0, 0, FLAGS, "mode" },\
72  { "burn", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_BURN}, 0, 0, FLAGS, "mode" },\
73  { "darken", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DARKEN}, 0, 0, FLAGS, "mode" },\
74  { "difference", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DIFFERENCE}, 0, 0, FLAGS, "mode" },\
75  { "difference128", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DIFFERENCE128}, 0, 0, FLAGS, "mode" },\
76  { "divide", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DIVIDE}, 0, 0, FLAGS, "mode" },\
77  { "dodge", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DODGE}, 0, 0, FLAGS, "mode" },\
78  { "exclusion", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_EXCLUSION}, 0, 0, FLAGS, "mode" },\
79  { "freeze", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_FREEZE}, 0, 0, FLAGS, "mode" },\
80  { "glow", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GLOW}, 0, 0, FLAGS, "mode" },\
81  { "hardlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARDLIGHT}, 0, 0, FLAGS, "mode" },\
82  { "hardmix", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARDMIX}, 0, 0, FLAGS, "mode" },\
83  { "heat", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HEAT}, 0, 0, FLAGS, "mode" },\
84  { "lighten", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_LIGHTEN}, 0, 0, FLAGS, "mode" },\
85  { "linearlight","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_LINEARLIGHT},0, 0, FLAGS, "mode" },\
86  { "multiply", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_MULTIPLY}, 0, 0, FLAGS, "mode" },\
87  { "multiply128","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_MULTIPLY128},0, 0, FLAGS, "mode" },\
88  { "negation", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_NEGATION}, 0, 0, FLAGS, "mode" },\
89  { "normal", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_NORMAL}, 0, 0, FLAGS, "mode" },\
90  { "or", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_OR}, 0, 0, FLAGS, "mode" },\
91  { "overlay", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_OVERLAY}, 0, 0, FLAGS, "mode" },\
92  { "phoenix", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_PHOENIX}, 0, 0, FLAGS, "mode" },\
93  { "pinlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_PINLIGHT}, 0, 0, FLAGS, "mode" },\
94  { "reflect", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_REFLECT}, 0, 0, FLAGS, "mode" },\
95  { "screen", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SCREEN}, 0, 0, FLAGS, "mode" },\
96  { "softlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SOFTLIGHT}, 0, 0, FLAGS, "mode" },\
97  { "subtract", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SUBTRACT}, 0, 0, FLAGS, "mode" },\
98  { "vividlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_VIVIDLIGHT}, 0, 0, FLAGS, "mode" },\
99  { "xor", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_XOR}, 0, 0, FLAGS, "mode" },\
100  { "c0_expr", "set color component #0 expression", OFFSET(params[0].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },\
101  { "c1_expr", "set color component #1 expression", OFFSET(params[1].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },\
102  { "c2_expr", "set color component #2 expression", OFFSET(params[2].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },\
103  { "c3_expr", "set color component #3 expression", OFFSET(params[3].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },\
104  { "all_expr", "set expression for all color components", OFFSET(all_expr), AV_OPT_TYPE_STRING, {.str=NULL}, CHAR_MIN, CHAR_MAX, FLAGS },\
105  { "c0_opacity", "set color component #0 opacity", OFFSET(params[0].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },\
106  { "c1_opacity", "set color component #1 opacity", OFFSET(params[1].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },\
107  { "c2_opacity", "set color component #2 opacity", OFFSET(params[2].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },\
108  { "c3_opacity", "set color component #3 opacity", OFFSET(params[3].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },\
109  { "all_opacity", "set opacity for all color components", OFFSET(all_opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS}
110 
111 #define OFFSET(x) offsetof(BlendContext, x)
112 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
113 
114 static const AVOption blend_options[] = {
115  COMMON_OPTIONS,
116  { "shortest", "force termination when the shortest input terminates", OFFSET(dinput.shortest), AV_OPT_TYPE_BOOL, {.i64=0}, 0, 1, FLAGS },
117  { "repeatlast", "repeat last bottom frame", OFFSET(dinput.repeatlast), AV_OPT_TYPE_BOOL, {.i64=1}, 0, 1, FLAGS },
118  { NULL }
119 };
120 
121 AVFILTER_DEFINE_CLASS(blend);
122 
123 #define COPY(src) \
124 static void blend_copy ## src(const uint8_t *top, ptrdiff_t top_linesize, \
125  const uint8_t *bottom, ptrdiff_t bottom_linesize,\
126  uint8_t *dst, ptrdiff_t dst_linesize, \
127  ptrdiff_t width, ptrdiff_t height, \
128  FilterParams *param, double *values, int starty) \
129 { \
130  av_image_copy_plane(dst, dst_linesize, src, src ## _linesize, \
131  width, height); \
132 }
133 
134 COPY(top)
135 COPY(bottom)
136 
137 #undef COPY
138 
139 static void blend_normal_8bit(const uint8_t *top, ptrdiff_t top_linesize,
140  const uint8_t *bottom, ptrdiff_t bottom_linesize,
141  uint8_t *dst, ptrdiff_t dst_linesize,
142  ptrdiff_t width, ptrdiff_t height,
143  FilterParams *param, double *values, int starty)
144 {
145  const double opacity = param->opacity;
146  int i, j;
147 
148  for (i = 0; i < height; i++) {
149  for (j = 0; j < width; j++) {
150  dst[j] = top[j] * opacity + bottom[j] * (1. - opacity);
151  }
152  dst += dst_linesize;
153  top += top_linesize;
154  bottom += bottom_linesize;
155  }
156 }
157 
158 static void blend_normal_16bit(const uint8_t *_top, ptrdiff_t top_linesize,
159  const uint8_t *_bottom, ptrdiff_t bottom_linesize,
160  uint8_t *_dst, ptrdiff_t dst_linesize,
161  ptrdiff_t width, ptrdiff_t height,
162  FilterParams *param, double *values, int starty)
163 {
164  const uint16_t *top = (uint16_t*)_top;
165  const uint16_t *bottom = (uint16_t*)_bottom;
166  uint16_t *dst = (uint16_t*)_dst;
167  const double opacity = param->opacity;
168  int i, j;
169  dst_linesize /= 2;
170  top_linesize /= 2;
171  bottom_linesize /= 2;
172 
173  for (i = 0; i < height; i++) {
174  for (j = 0; j < width; j++) {
175  dst[j] = top[j] * opacity + bottom[j] * (1. - opacity);
176  }
177  dst += dst_linesize;
178  top += top_linesize;
179  bottom += bottom_linesize;
180  }
181 }
182 
183 #define DEFINE_BLEND8(name, expr) \
184 static void blend_## name##_8bit(const uint8_t *top, ptrdiff_t top_linesize, \
185  const uint8_t *bottom, ptrdiff_t bottom_linesize, \
186  uint8_t *dst, ptrdiff_t dst_linesize, \
187  ptrdiff_t width, ptrdiff_t height, \
188  FilterParams *param, double *values, int starty) \
189 { \
190  double opacity = param->opacity; \
191  int i, j; \
192  \
193  for (i = 0; i < height; i++) { \
194  for (j = 0; j < width; j++) { \
195  dst[j] = top[j] + ((expr) - top[j]) * opacity; \
196  } \
197  dst += dst_linesize; \
198  top += top_linesize; \
199  bottom += bottom_linesize; \
200  } \
201 }
202 
203 #define DEFINE_BLEND16(name, expr) \
204 static void blend_## name##_16bit(const uint8_t *_top, ptrdiff_t top_linesize, \
205  const uint8_t *_bottom, ptrdiff_t bottom_linesize, \
206  uint8_t *_dst, ptrdiff_t dst_linesize, \
207  ptrdiff_t width, ptrdiff_t height, \
208  FilterParams *param, double *values, int starty) \
209 { \
210  const uint16_t *top = (uint16_t*)_top; \
211  const uint16_t *bottom = (uint16_t*)_bottom; \
212  uint16_t *dst = (uint16_t*)_dst; \
213  double opacity = param->opacity; \
214  int i, j; \
215  dst_linesize /= 2; \
216  top_linesize /= 2; \
217  bottom_linesize /= 2; \
218  \
219  for (i = 0; i < height; i++) { \
220  for (j = 0; j < width; j++) { \
221  dst[j] = top[j] + ((expr) - top[j]) * opacity; \
222  } \
223  dst += dst_linesize; \
224  top += top_linesize; \
225  bottom += bottom_linesize; \
226  } \
227 }
228 
229 #define A top[j]
230 #define B bottom[j]
231 
232 #define MULTIPLY(x, a, b) ((x) * (((a) * (b)) / 255))
233 #define SCREEN(x, a, b) (255 - (x) * ((255 - (a)) * (255 - (b)) / 255))
234 #define BURN(a, b) (((a) == 0) ? (a) : FFMAX(0, 255 - ((255 - (b)) << 8) / (a)))
235 #define DODGE(a, b) (((a) == 255) ? (a) : FFMIN(255, (((b) << 8) / (255 - (a)))))
236 
237 DEFINE_BLEND8(addition, FFMIN(255, A + B))
238 DEFINE_BLEND8(addition128, av_clip_uint8(A + B - 128))
239 DEFINE_BLEND8(average, (A + B) / 2)
240 DEFINE_BLEND8(subtract, FFMAX(0, A - B))
241 DEFINE_BLEND8(multiply, MULTIPLY(1, A, B))
242 DEFINE_BLEND8(multiply128,av_clip_uint8((A - 128) * B / 32. + 128))
243 DEFINE_BLEND8(negation, 255 - FFABS(255 - A - B))
244 DEFINE_BLEND8(difference, FFABS(A - B))
245 DEFINE_BLEND8(difference128, av_clip_uint8(128 + A - B))
246 DEFINE_BLEND8(screen, SCREEN(1, A, B))
247 DEFINE_BLEND8(overlay, (A < 128) ? MULTIPLY(2, A, B) : SCREEN(2, A, B))
248 DEFINE_BLEND8(hardlight, (B < 128) ? MULTIPLY(2, B, A) : SCREEN(2, B, A))
249 DEFINE_BLEND8(hardmix, (A < (255 - B)) ? 0: 255)
250 DEFINE_BLEND8(heat, (A == 0) ? 0 : 255 - FFMIN(((255 - B) * (255 - B)) / A, 255))
251 DEFINE_BLEND8(freeze, (B == 0) ? 0 : 255 - FFMIN(((255 - A) * (255 - A)) / B, 255))
252 DEFINE_BLEND8(darken, FFMIN(A, B))
253 DEFINE_BLEND8(lighten, FFMAX(A, B))
254 DEFINE_BLEND8(divide, av_clip_uint8(B == 0 ? 255 : 255 * A / B))
255 DEFINE_BLEND8(dodge, DODGE(A, B))
256 DEFINE_BLEND8(burn, BURN(A, B))
257 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))
258 DEFINE_BLEND8(exclusion, A + B - 2 * A * B / 255)
259 DEFINE_BLEND8(pinlight, (B < 128) ? FFMIN(A, 2 * B) : FFMAX(A, 2 * (B - 128)))
260 DEFINE_BLEND8(phoenix, FFMIN(A, B) - FFMAX(A, B) + 255)
261 DEFINE_BLEND8(reflect, (B == 255) ? B : FFMIN(255, (A * A / (255 - B))))
262 DEFINE_BLEND8(glow, (A == 255) ? A : FFMIN(255, (B * B / (255 - A))))
263 DEFINE_BLEND8(and, A & B)
264 DEFINE_BLEND8(or, A | B)
265 DEFINE_BLEND8(xor, A ^ B)
266 DEFINE_BLEND8(vividlight, (A < 128) ? BURN(2 * A, B) : DODGE(2 * (A - 128), B))
267 DEFINE_BLEND8(linearlight,av_clip_uint8((B < 128) ? B + 2 * A - 255 : B + 2 * (A - 128)))
268 
269 #undef MULTIPLY
270 #undef SCREEN
271 #undef BURN
272 #undef DODGE
273 
274 #define MULTIPLY(x, a, b) ((x) * (((a) * (b)) / 65535))
275 #define SCREEN(x, a, b) (65535 - (x) * ((65535 - (a)) * (65535 - (b)) / 65535))
276 #define BURN(a, b) (((a) == 0) ? (a) : FFMAX(0, 65535 - ((65535 - (b)) << 16) / (a)))
277 #define DODGE(a, b) (((a) == 65535) ? (a) : FFMIN(65535, (((b) << 16) / (65535 - (a)))))
278 
279 DEFINE_BLEND16(addition, FFMIN(65535, A + B))
280 DEFINE_BLEND16(addition128, av_clip_uint16(A + B - 32768))
281 DEFINE_BLEND16(average, (A + B) / 2)
282 DEFINE_BLEND16(subtract, FFMAX(0, A - B))
283 DEFINE_BLEND16(multiply, MULTIPLY(1, A, B))
284 DEFINE_BLEND16(multiply128, av_clip_uint16((A - 32768) * B / 8192. + 32768))
285 DEFINE_BLEND16(negation, 65535 - FFABS(65535 - A - B))
286 DEFINE_BLEND16(difference, FFABS(A - B))
287 DEFINE_BLEND16(difference128, av_clip_uint16(32768 + A - B))
288 DEFINE_BLEND16(screen, SCREEN(1, A, B))
289 DEFINE_BLEND16(overlay, (A < 32768) ? MULTIPLY(2, A, B) : SCREEN(2, A, B))
290 DEFINE_BLEND16(hardlight, (B < 32768) ? MULTIPLY(2, B, A) : SCREEN(2, B, A))
291 DEFINE_BLEND16(hardmix, (A < (65535 - B)) ? 0: 65535)
292 DEFINE_BLEND16(heat, (A == 0) ? 0 : 65535 - FFMIN(((65535 - B) * (65535 - B)) / A, 65535))
293 DEFINE_BLEND16(freeze, (B == 0) ? 0 : 65535 - FFMIN(((65535 - A) * (65535 - A)) / B, 65535))
294 DEFINE_BLEND16(darken, FFMIN(A, B))
295 DEFINE_BLEND16(lighten, FFMAX(A, B))
296 DEFINE_BLEND16(divide, av_clip_uint16(B == 0 ? 65535 : 65535 * A / B))
297 DEFINE_BLEND16(dodge, DODGE(A, B))
298 DEFINE_BLEND16(burn, BURN(A, B))
299 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))
300 DEFINE_BLEND16(exclusion, A + B - 2 * A * B / 65535)
301 DEFINE_BLEND16(pinlight, (B < 32768) ? FFMIN(A, 2 * B) : FFMAX(A, 2 * (B - 32768)))
302 DEFINE_BLEND16(phoenix, FFMIN(A, B) - FFMAX(A, B) + 65535)
303 DEFINE_BLEND16(reflect, (B == 65535) ? B : FFMIN(65535, (A * A / (65535 - B))))
304 DEFINE_BLEND16(glow, (A == 65535) ? A : FFMIN(65535, (B * B / (65535 - A))))
305 DEFINE_BLEND16(and, A & B)
306 DEFINE_BLEND16(or, A | B)
307 DEFINE_BLEND16(xor, A ^ B)
308 DEFINE_BLEND16(vividlight, (A < 32768) ? BURN(2 * A, B) : DODGE(2 * (A - 32768), B))
309 DEFINE_BLEND16(linearlight,av_clip_uint16((B < 32768) ? B + 2 * A - 65535 : B + 2 * (A - 32768)))
310 
311 #define DEFINE_BLEND_EXPR(type, name, div) \
312 static void blend_expr_## name(const uint8_t *_top, ptrdiff_t top_linesize, \
313  const uint8_t *_bottom, ptrdiff_t bottom_linesize, \
314  uint8_t *_dst, ptrdiff_t dst_linesize, \
315  ptrdiff_t width, ptrdiff_t height, \
316  FilterParams *param, double *values, int starty) \
317 { \
318  const type *top = (type*)_top; \
319  const type *bottom = (type*)_bottom; \
320  type *dst = (type*)_dst; \
321  AVExpr *e = param->e; \
322  int y, x; \
323  dst_linesize /= div; \
324  top_linesize /= div; \
325  bottom_linesize /= div; \
326  \
327  for (y = 0; y < height; y++) { \
328  values[VAR_Y] = y + starty; \
329  for (x = 0; x < width; x++) { \
330  values[VAR_X] = x; \
331  values[VAR_TOP] = values[VAR_A] = top[x]; \
332  values[VAR_BOTTOM] = values[VAR_B] = bottom[x]; \
333  dst[x] = av_expr_eval(e, values, NULL); \
334  } \
335  dst += dst_linesize; \
336  top += top_linesize; \
337  bottom += bottom_linesize; \
338  } \
339 }
340 
341 DEFINE_BLEND_EXPR(uint8_t, 8bit, 1)
342 DEFINE_BLEND_EXPR(uint16_t, 16bit, 2)
343 
344 static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
345 {
346  ThreadData *td = arg;
347  int slice_start = (td->h * jobnr ) / nb_jobs;
348  int slice_end = (td->h * (jobnr+1)) / nb_jobs;
349  int height = slice_end - slice_start;
350  const uint8_t *top = td->top->data[td->plane];
351  const uint8_t *bottom = td->bottom->data[td->plane];
352  uint8_t *dst = td->dst->data[td->plane];
353  double values[VAR_VARS_NB];
354 
355  values[VAR_N] = td->inlink->frame_count;
356  values[VAR_T] = td->dst->pts == AV_NOPTS_VALUE ? NAN : td->dst->pts * av_q2d(td->inlink->time_base);
357  values[VAR_W] = td->w;
358  values[VAR_H] = td->h;
359  values[VAR_SW] = td->w / (double)td->dst->width;
360  values[VAR_SH] = td->h / (double)td->dst->height;
361 
362  td->param->blend(top + slice_start * td->top->linesize[td->plane],
363  td->top->linesize[td->plane],
364  bottom + slice_start * td->bottom->linesize[td->plane],
365  td->bottom->linesize[td->plane],
366  dst + slice_start * td->dst->linesize[td->plane],
367  td->dst->linesize[td->plane],
368  td->w, height, td->param, &values[0], slice_start);
369  return 0;
370 }
371 
372 static AVFrame *blend_frame(AVFilterContext *ctx, AVFrame *top_buf,
373  const AVFrame *bottom_buf)
374 {
375  BlendContext *s = ctx->priv;
376  AVFilterLink *inlink = ctx->inputs[0];
377  AVFilterLink *outlink = ctx->outputs[0];
378  AVFrame *dst_buf;
379  int plane;
380 
381  dst_buf = ff_get_video_buffer(outlink, outlink->w, outlink->h);
382  if (!dst_buf)
383  return top_buf;
384  av_frame_copy_props(dst_buf, top_buf);
385 
386  for (plane = 0; plane < s->nb_planes; plane++) {
387  int hsub = plane == 1 || plane == 2 ? s->hsub : 0;
388  int vsub = plane == 1 || plane == 2 ? s->vsub : 0;
389  int outw = AV_CEIL_RSHIFT(dst_buf->width, hsub);
390  int outh = AV_CEIL_RSHIFT(dst_buf->height, vsub);
391  FilterParams *param = &s->params[plane];
392  ThreadData td = { .top = top_buf, .bottom = bottom_buf, .dst = dst_buf,
393  .w = outw, .h = outh, .param = param, .plane = plane,
394  .inlink = inlink };
395 
396  ctx->internal->execute(ctx, filter_slice, &td, NULL, FFMIN(outh, ctx->graph->nb_threads));
397  }
398 
399  if (!s->tblend)
400  av_frame_free(&top_buf);
401 
402  return dst_buf;
403 }
404 
405 static av_cold int init(AVFilterContext *ctx)
406 {
407  BlendContext *s = ctx->priv;
408 
409  s->tblend = !strcmp(ctx->filter->name, "tblend");
410 
411  s->dinput.process = blend_frame;
412  return 0;
413 }
414 
415 static int query_formats(AVFilterContext *ctx)
416 {
417  static const enum AVPixelFormat pix_fmts[] = {
418  AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA420P,
419  AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ422P,AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ411P,
420  AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
421  AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP, AV_PIX_FMT_GRAY8,
422  AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
423  AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
424  AV_PIX_FMT_GBRP16, AV_PIX_FMT_GRAY16,
425  AV_PIX_FMT_NONE
426  };
427 
428  AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
429  if (!fmts_list)
430  return AVERROR(ENOMEM);
431  return ff_set_common_formats(ctx, fmts_list);
432 }
433 
434 static av_cold void uninit(AVFilterContext *ctx)
435 {
436  BlendContext *s = ctx->priv;
437  int i;
438 
439  ff_dualinput_uninit(&s->dinput);
440  av_frame_free(&s->prev_frame);
441 
442  for (i = 0; i < FF_ARRAY_ELEMS(s->params); i++)
443  av_expr_free(s->params[i].e);
444 }
445 
446 void ff_blend_init(FilterParams *param, int is_16bit)
447 {
448  switch (param->mode) {
449  case BLEND_ADDITION: param->blend = is_16bit ? blend_addition_16bit : blend_addition_8bit; break;
450  case BLEND_ADDITION128: param->blend = is_16bit ? blend_addition128_16bit : blend_addition128_8bit; break;
451  case BLEND_AND: param->blend = is_16bit ? blend_and_16bit : blend_and_8bit; break;
452  case BLEND_AVERAGE: param->blend = is_16bit ? blend_average_16bit : blend_average_8bit; break;
453  case BLEND_BURN: param->blend = is_16bit ? blend_burn_16bit : blend_burn_8bit; break;
454  case BLEND_DARKEN: param->blend = is_16bit ? blend_darken_16bit : blend_darken_8bit; break;
455  case BLEND_DIFFERENCE: param->blend = is_16bit ? blend_difference_16bit : blend_difference_8bit; break;
456  case BLEND_DIFFERENCE128: param->blend = is_16bit ? blend_difference128_16bit: blend_difference128_8bit; break;
457  case BLEND_DIVIDE: param->blend = is_16bit ? blend_divide_16bit : blend_divide_8bit; break;
458  case BLEND_DODGE: param->blend = is_16bit ? blend_dodge_16bit : blend_dodge_8bit; break;
459  case BLEND_EXCLUSION: param->blend = is_16bit ? blend_exclusion_16bit : blend_exclusion_8bit; break;
460  case BLEND_FREEZE: param->blend = is_16bit ? blend_freeze_16bit : blend_freeze_8bit; break;
461  case BLEND_GLOW: param->blend = is_16bit ? blend_glow_16bit : blend_glow_8bit; break;
462  case BLEND_HARDLIGHT: param->blend = is_16bit ? blend_hardlight_16bit : blend_hardlight_8bit; break;
463  case BLEND_HARDMIX: param->blend = is_16bit ? blend_hardmix_16bit : blend_hardmix_8bit; break;
464  case BLEND_HEAT: param->blend = is_16bit ? blend_heat_16bit : blend_heat_8bit; break;
465  case BLEND_LIGHTEN: param->blend = is_16bit ? blend_lighten_16bit : blend_lighten_8bit; break;
466  case BLEND_LINEARLIGHT:param->blend = is_16bit ? blend_linearlight_16bit: blend_linearlight_8bit;break;
467  case BLEND_MULTIPLY: param->blend = is_16bit ? blend_multiply_16bit : blend_multiply_8bit; break;
468  case BLEND_MULTIPLY128:param->blend = is_16bit ? blend_multiply128_16bit: blend_multiply128_8bit;break;
469  case BLEND_NEGATION: param->blend = is_16bit ? blend_negation_16bit : blend_negation_8bit; break;
470  case BLEND_NORMAL: param->blend = param->opacity == 1 ? blend_copytop :
471  param->opacity == 0 ? blend_copybottom :
472  is_16bit ? blend_normal_16bit : blend_normal_8bit; break;
473  case BLEND_OR: param->blend = is_16bit ? blend_or_16bit : blend_or_8bit; break;
474  case BLEND_OVERLAY: param->blend = is_16bit ? blend_overlay_16bit : blend_overlay_8bit; break;
475  case BLEND_PHOENIX: param->blend = is_16bit ? blend_phoenix_16bit : blend_phoenix_8bit; break;
476  case BLEND_PINLIGHT: param->blend = is_16bit ? blend_pinlight_16bit : blend_pinlight_8bit; break;
477  case BLEND_REFLECT: param->blend = is_16bit ? blend_reflect_16bit : blend_reflect_8bit; break;
478  case BLEND_SCREEN: param->blend = is_16bit ? blend_screen_16bit : blend_screen_8bit; break;
479  case BLEND_SOFTLIGHT: param->blend = is_16bit ? blend_softlight_16bit : blend_softlight_8bit; break;
480  case BLEND_SUBTRACT: param->blend = is_16bit ? blend_subtract_16bit : blend_subtract_8bit; break;
481  case BLEND_VIVIDLIGHT: param->blend = is_16bit ? blend_vividlight_16bit : blend_vividlight_8bit; break;
482  case BLEND_XOR: param->blend = is_16bit ? blend_xor_16bit : blend_xor_8bit; break;
483  }
484 
485  if (param->opacity == 0 && param->mode != BLEND_NORMAL) {
486  param->blend = blend_copytop;
487  }
488 
489  if (ARCH_X86)
490  ff_blend_init_x86(param, is_16bit);
491 }
492 
493 static int config_output(AVFilterLink *outlink)
494 {
495  AVFilterContext *ctx = outlink->src;
496  AVFilterLink *toplink = ctx->inputs[TOP];
497  BlendContext *s = ctx->priv;
498  const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(toplink->format);
499  int ret, plane, is_16bit;
500 
501  if (!s->tblend) {
502  AVFilterLink *bottomlink = ctx->inputs[BOTTOM];
503 
504  if (toplink->format != bottomlink->format) {
505  av_log(ctx, AV_LOG_ERROR, "inputs must be of same pixel format\n");
506  return AVERROR(EINVAL);
507  }
508  if (toplink->w != bottomlink->w ||
509  toplink->h != bottomlink->h ||
510  toplink->sample_aspect_ratio.num != bottomlink->sample_aspect_ratio.num ||
511  toplink->sample_aspect_ratio.den != bottomlink->sample_aspect_ratio.den) {
512  av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
513  "(size %dx%d, SAR %d:%d) do not match the corresponding "
514  "second input link %s parameters (%dx%d, SAR %d:%d)\n",
515  ctx->input_pads[TOP].name, toplink->w, toplink->h,
516  toplink->sample_aspect_ratio.num,
517  toplink->sample_aspect_ratio.den,
518  ctx->input_pads[BOTTOM].name, bottomlink->w, bottomlink->h,
519  bottomlink->sample_aspect_ratio.num,
520  bottomlink->sample_aspect_ratio.den);
521  return AVERROR(EINVAL);
522  }
523  }
524 
525  outlink->w = toplink->w;
526  outlink->h = toplink->h;
527  outlink->time_base = toplink->time_base;
528  outlink->sample_aspect_ratio = toplink->sample_aspect_ratio;
529  outlink->frame_rate = toplink->frame_rate;
530 
531  s->hsub = pix_desc->log2_chroma_w;
532  s->vsub = pix_desc->log2_chroma_h;
533 
534  is_16bit = pix_desc->comp[0].depth == 16;
535  s->nb_planes = av_pix_fmt_count_planes(toplink->format);
536 
537  if (!s->tblend)
538  if ((ret = ff_dualinput_init(ctx, &s->dinput)) < 0)
539  return ret;
540 
541  for (plane = 0; plane < FF_ARRAY_ELEMS(s->params); plane++) {
542  FilterParams *param = &s->params[plane];
543 
544  if (s->all_mode >= 0)
545  param->mode = s->all_mode;
546  if (s->all_opacity < 1)
547  param->opacity = s->all_opacity;
548 
549  ff_blend_init(param, is_16bit);
550 
551  if (s->all_expr && !param->expr_str) {
552  param->expr_str = av_strdup(s->all_expr);
553  if (!param->expr_str)
554  return AVERROR(ENOMEM);
555  }
556  if (param->expr_str) {
557  ret = av_expr_parse(&param->e, param->expr_str, var_names,
558  NULL, NULL, NULL, NULL, 0, ctx);
559  if (ret < 0)
560  return ret;
561  param->blend = is_16bit? blend_expr_16bit : blend_expr_8bit;
562  }
563  }
564 
565  return 0;
566 }
567 
568 #if CONFIG_BLEND_FILTER
569 
570 static int request_frame(AVFilterLink *outlink)
571 {
572  BlendContext *s = outlink->src->priv;
573  return ff_dualinput_request_frame(&s->dinput, outlink);
574 }
575 
576 static int filter_frame(AVFilterLink *inlink, AVFrame *buf)
577 {
578  BlendContext *s = inlink->dst->priv;
579  return ff_dualinput_filter_frame(&s->dinput, inlink, buf);
580 }
581 
582 static const AVFilterPad blend_inputs[] = {
583  {
584  .name = "top",
585  .type = AVMEDIA_TYPE_VIDEO,
586  .filter_frame = filter_frame,
587  },{
588  .name = "bottom",
589  .type = AVMEDIA_TYPE_VIDEO,
590  .filter_frame = filter_frame,
591  },
592  { NULL }
593 };
594 
595 static const AVFilterPad blend_outputs[] = {
596  {
597  .name = "default",
598  .type = AVMEDIA_TYPE_VIDEO,
599  .config_props = config_output,
600  .request_frame = request_frame,
601  },
602  { NULL }
603 };
604 
605 AVFilter ff_vf_blend = {
606  .name = "blend",
607  .description = NULL_IF_CONFIG_SMALL("Blend two video frames into each other."),
608  .init = init,
609  .uninit = uninit,
610  .priv_size = sizeof(BlendContext),
611  .query_formats = query_formats,
612  .inputs = blend_inputs,
613  .outputs = blend_outputs,
614  .priv_class = &blend_class,
615  .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
616 };
617 
618 #endif
619 
620 #if CONFIG_TBLEND_FILTER
621 
622 static int tblend_filter_frame(AVFilterLink *inlink, AVFrame *frame)
623 {
624  BlendContext *s = inlink->dst->priv;
625  AVFilterLink *outlink = inlink->dst->outputs[0];
626 
627  if (s->prev_frame) {
628  AVFrame *out = blend_frame(inlink->dst, frame, s->prev_frame);
629  av_frame_free(&s->prev_frame);
630  s->prev_frame = frame;
631  return ff_filter_frame(outlink, out);
632  }
633  s->prev_frame = frame;
634  return 0;
635 }
636 
637 static const AVOption tblend_options[] = {
638  COMMON_OPTIONS,
639  { NULL }
640 };
641 
642 AVFILTER_DEFINE_CLASS(tblend);
643 
644 static const AVFilterPad tblend_inputs[] = {
645  {
646  .name = "default",
647  .type = AVMEDIA_TYPE_VIDEO,
648  .filter_frame = tblend_filter_frame,
649  },
650  { NULL }
651 };
652 
653 static const AVFilterPad tblend_outputs[] = {
654  {
655  .name = "default",
656  .type = AVMEDIA_TYPE_VIDEO,
657  .config_props = config_output,
658  },
659  { NULL }
660 };
661 
662 AVFilter ff_vf_tblend = {
663  .name = "tblend",
664  .description = NULL_IF_CONFIG_SMALL("Blend successive frames."),
665  .priv_size = sizeof(BlendContext),
666  .priv_class = &tblend_class,
667  .query_formats = query_formats,
668  .init = init,
669  .uninit = uninit,
670  .inputs = tblend_inputs,
671  .outputs = tblend_outputs,
672  .flags = AVFILTER_FLAG_SLICE_THREADS,
673 };
674 
675 #endif
BlendContext::dinput
FFDualInputContext dinput
Definition: vf_blend.c:38
plane
int plane
Definition: avisynth_c.h:291
FilterParams::e
AVExpr * e
Definition: blend.h:67
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:378
s
const char * s
Definition: avisynth_c.h:631
av_pix_fmt_desc_get
const AVPixFmtDescriptor * av_pix_fmt_desc_get(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2222
AVFrame
This structure describes decoded (raw) audio or video data.
Definition: frame.h:184
FilterParams::opacity
double opacity
Definition: blend.h:66
AVOption
AVOption.
Definition: opt.h:245
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:158
av_pix_fmt_count_planes
int av_pix_fmt_count_planes(enum AVPixelFormat pix_fmt)
Definition: pixdesc.c:2262
VAR_X
Definition: vf_blend.c:51
avfilter.h
Main libavfilter public API header.
BOTTOM
#define BOTTOM
Definition: vf_blend.c:34
AV_PIX_FMT_GBRP
planar GBR 4:4:4 24bpp
Definition: pixfmt.h:180
AVRational::num
int num
numerator
Definition: rational.h:44
var_names
static const char *const var_names[]
Definition: vf_blend.c:50
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:658
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:76
VAR_W
Definition: vf_blend.c:51
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
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
VAR_B
Definition: vf_blend.c:51
AVFilterContext::graph
struct AVFilterGraph * graph
filtergraph this filter belongs to
Definition: avfilter.h:322
AVFilterPad::name
const char * name
Pad name.
Definition: internal.h:59
ff_dualinput_filter_frame
int ff_dualinput_filter_frame(FFDualInputContext *s, AVFilterLink *inlink, AVFrame *in)
Definition: dualinput.c:76
AVFilterContext::inputs
AVFilterLink ** inputs
array of pointers to input links
Definition: avfilter.h:313
ff_blend_init
void ff_blend_init(FilterParams *param, int is_16bit)
Definition: vf_blend.c:446
ff_filter_frame
int ff_filter_frame(AVFilterLink *link, AVFrame *frame)
Send a frame of data to the next filter.
Definition: avfilter.c:1180
VAR_A
Definition: vf_blend.c:51
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:68
av_cold
#define av_cold
Definition: attributes.h:82
opt.h
AVOptions.
DEFINE_BLEND8
#define DEFINE_BLEND8(name, expr)
Definition: vf_blend.c:183
AVFrame::pts
int64_t pts
Presentation timestamp in time_base units (time when frame should be shown to user).
Definition: frame.h:268
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:65
av_q2d
static double av_q2d(AVRational a)
Convert rational to double.
Definition: rational.h:80
ThreadData::plane
int plane
Definition: vf_blend.c:57
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
AVFilterGraph::nb_threads
int nb_threads
Maximum number of threads used by filters in this graph.
Definition: avfilter.h:804
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:415
AV_PIX_FMT_YUV444P16
#define AV_PIX_FMT_YUV444P16
Definition: pixfmt.h:354
VAR_Y
Definition: vf_blend.c:51
BlendContext::params
FilterParams params[4]
Definition: vf_blend.c:45
ff_dualinput_uninit
void ff_dualinput_uninit(FFDualInputContext *s)
Definition: dualinput.c:87
AV_PIX_FMT_YUVA420P16
#define AV_PIX_FMT_YUVA420P16
Definition: pixfmt.h:377
config_output
static int config_output(AVFilterLink *outlink)
Definition: vf_blend.c:493
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#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:53
AVFilterContext::input_pads
AVFilterPad * input_pads
array of input pads
Definition: avfilter.h:312
AV_PIX_FMT_YUVA422P
planar YUV 4:2:2 24bpp, (1 Cr & Cb sample per 2x1 Y & A samples)
Definition: pixfmt.h:187
AVFrame::width
int width
width and height of the video frame
Definition: frame.h:236
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:405
uninit
static av_cold void uninit(AVFilterContext *ctx)
Definition: vf_blend.c:434
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
AVERROR
#define AVERROR(e)
Definition: error.h:43
SCREEN
#define SCREEN(x, a, b)
Definition: vf_blend.c:233
av_frame_free
void av_frame_free(AVFrame **frame)
Free the frame and any dynamically allocated objects in it, e.g.
Definition: frame.c:153
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:176
AVFilterContext::priv
void * priv
private data for use by the filter
Definition: avfilter.h:320
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:114
AV_PIX_FMT_YUVA444P16
#define AV_PIX_FMT_YUVA444P16
Definition: pixfmt.h:379
arg
const char * arg
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params
GLenum GLint * params
Definition: opengl_enc.c:114
B
#define B
Definition: vf_blend.c:230
FFMAX
#define FFMAX(a, b)
Definition: common.h:94
AV_PIX_FMT_YUV422P
planar YUV 4:2:2, 16bpp, (1 Cr & Cb sample per 2x1 Y samples)
Definition: pixfmt.h:66
FLAGS
#define FLAGS
Definition: vf_blend.c:112
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static SDL_Surface * screen
Definition: ffplay.c:365
A
#define A
Definition: vf_blend.c:229
VAR_H
Definition: vf_blend.c:51
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static int request_frame(AVFilterLink *outlink)
Definition: aeval.c:274
AV_PIX_FMT_GBRP16
#define AV_PIX_FMT_GBRP16
Definition: pixfmt.h:360
AV_PIX_FMT_GRAY16
#define AV_PIX_FMT_GRAY16
Definition: pixfmt.h:325
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:235
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
VAR_BOTTOM
Definition: vf_blend.c:51
width
#define width
filter_frame
static int filter_frame(AVFilterLink *inlink, AVFrame *in)
Definition: aeval.c:413
ctx
AVFormatContext * ctx
Definition: movenc.c:48
AV_OPT_TYPE_BOOL
Definition: opt.h:239
VAR_SH
Definition: vf_blend.c:51
FFABS
#define FFABS(a)
Absolute value, Note, INT_MIN / INT64_MIN result in undefined behavior as they are not representable ...
Definition: common.h:72
VAR_SW
Definition: vf_blend.c:51
FFDualInputContext::process
AVFrame *(* process)(AVFilterContext *ctx, AVFrame *main, const AVFrame *second)
Definition: dualinput.h:35
outputs
static const AVFilterPad outputs[]
Definition: af_afftfilt.c:386
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:69
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:352
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:53
inputs
static const AVFilterPad inputs[]
Definition: af_afftfilt.c:376
DEFINE_BLEND16
#define DEFINE_BLEND16(name, expr)
Definition: vf_blend.c:203
av_expr_free
void av_expr_free(AVExpr *e)
Free a parsed expression previously created with av_expr_parse().
Definition: eval.c:318
av_strdup
char * av_strdup(const char *s)
Duplicate the string s.
Definition: mem.c:267
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:139
AVFrame::linesize
int linesize[AV_NUM_DATA_POINTERS]
For video, size in bytes of each picture line.
Definition: frame.h:215
COPY
#define COPY(src)
Definition: vf_blend.c:123
AV_PIX_FMT_YUVA444P
planar YUV 4:4:4 32bpp, (1 Cr & Cb sample per 1x1 Y & A samples)
Definition: pixfmt.h:188
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:234
COMMON_OPTIONS
#define COMMON_OPTIONS
Definition: vf_blend.c:62
buf
void * buf
Definition: avisynth_c.h:553
FilterParams
filter data
Definition: mlp.h:74
blend_options
static const AVOption blend_options[]
Definition: vf_blend.c:114
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:142
VAR_TOP
Definition: vf_blend.c:51
AVFilter::name
const char * name
Filter name.
Definition: avfilter.h:146
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:131
ff_dualinput_init
int ff_dualinput_init(AVFilterContext *ctx, FFDualInputContext *s)
Definition: dualinput.c:43
AVFilterContext::outputs
AVFilterLink ** outputs
array of pointers to output links
Definition: avfilter.h:317
pix_fmts
static enum AVPixelFormat pix_fmts[]
Definition: libkvazaar.c:262
AVFilterContext::internal
AVFilterInternal * internal
An opaque struct for libavfilter internal use.
Definition: avfilter.h:345
flags
static int flags
Definition: cpu.c:47
AVFrame::data
uint8_t * data[AV_NUM_DATA_POINTERS]
pointer to the picture/channel planes.
Definition: frame.h:198
MULTIPLY
#define MULTIPLY(x, a, b)
Definition: vf_blend.c:232
VAR_N
Definition: vf_blend.c:51
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:228
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
OFFSET
#define OFFSET(x)
Definition: vf_blend.c:111
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:45
AVFilterInternal::execute
avfilter_execute_func * execute
Definition: internal.h:153
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:2051
pixfmt.h
pixel format definitions
NAN
#define NAN
Definition: math.h:28
BLEND_OR
Definition: blend.h:44
dualinput.h
Double input streams helper for filters.
blend_frame
static AVFrame * blend_frame(AVFilterContext *ctx, AVFrame *top_buf, const AVFrame *bottom_buf)
Definition: vf_blend.c:372
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:271
VAR_VARS_NB
Definition: vf_blend.c:51
AVFilterContext
An instance of a filter.
Definition: avfilter.h:305
ff_dualinput_request_frame
int ff_dualinput_request_frame(FFDualInputContext *s, AVFilterLink *outlink)
Definition: dualinput.c:82
AVFrame::height
int height
Definition: frame.h:236
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:193
VAR_T
Definition: vf_blend.c:51
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
AVFILTER_DEFINE_CLASS
AVFILTER_DEFINE_CLASS(blend)
AVFilterContext::filter
const AVFilter * filter
the AVFilter of which this is an instance
Definition: avfilter.h:308
AV_PIX_FMT_YUV422P16
#define AV_PIX_FMT_YUV422P16
Definition: pixfmt.h:353
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:580
AV_NOPTS_VALUE
#define AV_NOPTS_VALUE
Undefined timestamp value.
Definition: avutil.h:240
eval.h
simple arithmetic expression evaluator
AV_CEIL_RSHIFT
#define AV_CEIL_RSHIFT(a, b)
Definition: common.h:58
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