Line data Source code
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 0 : 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 0 : COPY(top)
136 0 : COPY(bottom)
137 :
138 : #undef COPY
139 :
140 0 : 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 0 : const double opacity = param->opacity;
147 : int i, j;
148 :
149 0 : for (i = 0; i < height; i++) {
150 0 : for (j = 0; j < width; j++) {
151 0 : dst[j] = top[j] * opacity + bottom[j] * (1. - opacity);
152 : }
153 0 : dst += dst_linesize;
154 0 : top += top_linesize;
155 0 : bottom += bottom_linesize;
156 : }
157 0 : }
158 :
159 0 : 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 0 : const uint16_t *top = (uint16_t*)_top;
166 0 : const uint16_t *bottom = (uint16_t*)_bottom;
167 0 : uint16_t *dst = (uint16_t*)_dst;
168 0 : const double opacity = param->opacity;
169 : int i, j;
170 0 : dst_linesize /= 2;
171 0 : top_linesize /= 2;
172 0 : bottom_linesize /= 2;
173 :
174 0 : for (i = 0; i < height; i++) {
175 0 : for (j = 0; j < width; j++) {
176 0 : dst[j] = top[j] * opacity + bottom[j] * (1. - opacity);
177 : }
178 0 : dst += dst_linesize;
179 0 : top += top_linesize;
180 0 : bottom += bottom_linesize;
181 : }
182 0 : }
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 6 : DEFINE_BLEND8(addition, FFMIN(255, A + B))
239 6 : DEFINE_BLEND8(grainmerge, av_clip_uint8(A + B - 128))
240 6 : DEFINE_BLEND8(average, (A + B) / 2)
241 6 : DEFINE_BLEND8(subtract, FFMAX(0, A - B))
242 6 : DEFINE_BLEND8(multiply, MULTIPLY(1, A, B))
243 0 : DEFINE_BLEND8(multiply128,av_clip_uint8((A - 128) * B / 32. + 128))
244 6 : DEFINE_BLEND8(negation, 255 - FFABS(255 - A - B))
245 6 : DEFINE_BLEND8(extremity, FFABS(255 - A - B))
246 6 : DEFINE_BLEND8(difference, FFABS(A - B))
247 1329 : DEFINE_BLEND8(grainextract, av_clip_uint8(128 + A - B))
248 6 : DEFINE_BLEND8(screen, SCREEN(1, A, B))
249 0 : DEFINE_BLEND8(overlay, (A < 128) ? MULTIPLY(2, A, B) : SCREEN(2, A, B))
250 0 : DEFINE_BLEND8(hardlight, (B < 128) ? MULTIPLY(2, B, A) : SCREEN(2, B, A))
251 6 : DEFINE_BLEND8(hardmix, (A < (255 - B)) ? 0: 255)
252 0 : DEFINE_BLEND8(heat, (A == 0) ? 0 : 255 - FFMIN(((255 - B) * (255 - B)) / A, 255))
253 0 : DEFINE_BLEND8(freeze, (B == 0) ? 0 : 255 - FFMIN(((255 - A) * (255 - A)) / B, 255))
254 6 : DEFINE_BLEND8(darken, FFMIN(A, B))
255 6 : DEFINE_BLEND8(lighten, FFMAX(A, B))
256 0 : DEFINE_BLEND8(divide, av_clip_uint8(B == 0 ? 255 : 255 * A / B))
257 0 : DEFINE_BLEND8(dodge, DODGE(A, B))
258 0 : DEFINE_BLEND8(burn, BURN(A, B))
259 0 : 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 0 : DEFINE_BLEND8(exclusion, A + B - 2 * A * B / 255)
261 0 : DEFINE_BLEND8(pinlight, (B < 128) ? FFMIN(A, 2 * B) : FFMAX(A, 2 * (B - 128)))
262 6 : DEFINE_BLEND8(phoenix, FFMIN(A, B) - FFMAX(A, B) + 255)
263 0 : DEFINE_BLEND8(reflect, (B == 255) ? B : FFMIN(255, (A * A / (255 - B))))
264 0 : DEFINE_BLEND8(glow, (A == 255) ? A : FFMIN(255, (B * B / (255 - A))))
265 6 : DEFINE_BLEND8(and, A & B)
266 6 : DEFINE_BLEND8(or, A | B)
267 6 : DEFINE_BLEND8(xor, A ^ B)
268 0 : DEFINE_BLEND8(vividlight, (A < 128) ? BURN(2 * A, B) : DODGE(2 * (A - 128), B))
269 0 : 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 6 : DEFINE_BLEND16(addition, FFMIN(65535, A + B))
282 6 : DEFINE_BLEND16(grainmerge, av_clip_uint16(A + B - 32768))
283 6 : DEFINE_BLEND16(average, (A + B) / 2)
284 12 : DEFINE_BLEND16(subtract, FFMAX(0, A - B))
285 0 : DEFINE_BLEND16(multiply, MULTIPLY(1, A, B))
286 0 : DEFINE_BLEND16(multiply128, av_clip_uint16((A - 32768) * B / 8192. + 32768))
287 6 : DEFINE_BLEND16(negation, 65535 - FFABS(65535 - A - B))
288 6 : DEFINE_BLEND16(extremity, FFABS(65535 - A - B))
289 6 : DEFINE_BLEND16(difference, FFABS(A - B))
290 6 : DEFINE_BLEND16(grainextract, av_clip_uint16(32768 + A - B))
291 0 : DEFINE_BLEND16(screen, SCREEN(1, A, B))
292 0 : DEFINE_BLEND16(overlay, (A < 32768) ? MULTIPLY(2, A, B) : SCREEN(2, A, B))
293 0 : DEFINE_BLEND16(hardlight, (B < 32768) ? MULTIPLY(2, B, A) : SCREEN(2, B, A))
294 0 : DEFINE_BLEND16(hardmix, (A < (65535 - B)) ? 0: 65535)
295 0 : DEFINE_BLEND16(heat, (A == 0) ? 0 : 65535 - FFMIN(((65535 - B) * (65535 - B)) / A, 65535))
296 0 : DEFINE_BLEND16(freeze, (B == 0) ? 0 : 65535 - FFMIN(((65535 - A) * (65535 - A)) / B, 65535))
297 6 : DEFINE_BLEND16(darken, FFMIN(A, B))
298 6 : DEFINE_BLEND16(lighten, FFMAX(A, B))
299 0 : DEFINE_BLEND16(divide, av_clip_uint16(B == 0 ? 65535 : 65535 * A / B))
300 0 : DEFINE_BLEND16(dodge, DODGE(A, B))
301 0 : DEFINE_BLEND16(burn, BURN(A, B))
302 0 : 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 0 : DEFINE_BLEND16(exclusion, A + B - 2 * A * B / 65535)
304 0 : DEFINE_BLEND16(pinlight, (B < 32768) ? FFMIN(A, 2 * B) : FFMAX(A, 2 * (B - 32768)))
305 6 : DEFINE_BLEND16(phoenix, FFMIN(A, B) - FFMAX(A, B) + 65535)
306 0 : DEFINE_BLEND16(reflect, (B == 65535) ? B : FFMIN(65535, (A * A / (65535 - B))))
307 0 : DEFINE_BLEND16(glow, (A == 65535) ? A : FFMIN(65535, (B * B / (65535 - A))))
308 6 : DEFINE_BLEND16(and, A & B)
309 6 : DEFINE_BLEND16(or, A | B)
310 0 : DEFINE_BLEND16(xor, A ^ B)
311 0 : DEFINE_BLEND16(vividlight, (A < 32768) ? BURN(2 * A, B) : DODGE(2 * (A - 32768), B))
312 0 : 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 0 : DEFINE_BLEND_EXPR(uint8_t, 8bit, 1)
345 0 : DEFINE_BLEND_EXPR(uint16_t, 16bit, 2)
346 :
347 1323 : static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
348 : {
349 1323 : ThreadData *td = arg;
350 1323 : int slice_start = (td->h * jobnr ) / nb_jobs;
351 1323 : int slice_end = (td->h * (jobnr+1)) / nb_jobs;
352 1323 : int height = slice_end - slice_start;
353 1323 : const uint8_t *top = td->top->data[td->plane];
354 1323 : const uint8_t *bottom = td->bottom->data[td->plane];
355 1323 : uint8_t *dst = td->dst->data[td->plane];
356 : double values[VAR_VARS_NB];
357 :
358 1323 : values[VAR_N] = td->inlink->frame_count_out;
359 1323 : values[VAR_T] = td->dst->pts == AV_NOPTS_VALUE ? NAN : td->dst->pts * av_q2d(td->inlink->time_base);
360 1323 : values[VAR_W] = td->w;
361 1323 : values[VAR_H] = td->h;
362 1323 : values[VAR_SW] = td->w / (double)td->dst->width;
363 1323 : values[VAR_SH] = td->h / (double)td->dst->height;
364 :
365 10584 : td->param->blend(top + slice_start * td->top->linesize[td->plane],
366 1323 : td->top->linesize[td->plane],
367 1323 : bottom + slice_start * td->bottom->linesize[td->plane],
368 1323 : td->bottom->linesize[td->plane],
369 1323 : dst + slice_start * td->dst->linesize[td->plane],
370 1323 : td->dst->linesize[td->plane],
371 2646 : td->w, height, td->param, &values[0], slice_start);
372 1323 : return 0;
373 : }
374 :
375 49 : static AVFrame *blend_frame(AVFilterContext *ctx, AVFrame *top_buf,
376 : const AVFrame *bottom_buf)
377 : {
378 49 : BlendContext *s = ctx->priv;
379 49 : AVFilterLink *inlink = ctx->inputs[0];
380 49 : AVFilterLink *outlink = ctx->outputs[0];
381 : AVFrame *dst_buf;
382 : int plane;
383 :
384 49 : dst_buf = ff_get_video_buffer(outlink, outlink->w, outlink->h);
385 49 : if (!dst_buf)
386 0 : return top_buf;
387 49 : av_frame_copy_props(dst_buf, top_buf);
388 :
389 196 : for (plane = 0; plane < s->nb_planes; plane++) {
390 147 : int hsub = plane == 1 || plane == 2 ? s->hsub : 0;
391 147 : int vsub = plane == 1 || plane == 2 ? s->vsub : 0;
392 147 : int outw = AV_CEIL_RSHIFT(dst_buf->width, hsub);
393 147 : int outh = AV_CEIL_RSHIFT(dst_buf->height, vsub);
394 147 : FilterParams *param = &s->params[plane];
395 147 : ThreadData td = { .top = top_buf, .bottom = bottom_buf, .dst = dst_buf,
396 : .w = outw, .h = outh, .param = param, .plane = plane,
397 : .inlink = inlink };
398 :
399 147 : ctx->internal->execute(ctx, filter_slice, &td, NULL, FFMIN(outh, ff_filter_get_nb_threads(ctx)));
400 : }
401 :
402 49 : if (!s->tblend)
403 0 : av_frame_free(&top_buf);
404 :
405 49 : return dst_buf;
406 : }
407 :
408 0 : static int blend_frame_for_dualinput(FFFrameSync *fs)
409 : {
410 0 : AVFilterContext *ctx = fs->parent;
411 : AVFrame *top_buf, *bottom_buf, *dst_buf;
412 : int ret;
413 :
414 0 : ret = ff_framesync_dualinput_get(fs, &top_buf, &bottom_buf);
415 0 : if (ret < 0)
416 0 : return ret;
417 0 : if (!bottom_buf)
418 0 : return ff_filter_frame(ctx->outputs[0], top_buf);
419 0 : dst_buf = blend_frame(ctx, top_buf, bottom_buf);
420 0 : return ff_filter_frame(ctx->outputs[0], dst_buf);
421 : }
422 :
423 1 : static av_cold int init(AVFilterContext *ctx)
424 : {
425 1 : BlendContext *s = ctx->priv;
426 :
427 1 : s->tblend = !strcmp(ctx->filter->name, "tblend");
428 :
429 1 : s->fs.on_event = blend_frame_for_dualinput;
430 1 : return 0;
431 : }
432 :
433 1 : 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 1 : AVFilterFormats *fmts_list = ff_make_format_list(pix_fmts);
447 1 : if (!fmts_list)
448 0 : return AVERROR(ENOMEM);
449 1 : return ff_set_common_formats(ctx, fmts_list);
450 : }
451 :
452 1 : static av_cold void uninit(AVFilterContext *ctx)
453 : {
454 1 : BlendContext *s = ctx->priv;
455 : int i;
456 :
457 1 : ff_framesync_uninit(&s->fs);
458 1 : av_frame_free(&s->prev_frame);
459 :
460 5 : for (i = 0; i < FF_ARRAY_ELEMS(s->params); i++)
461 4 : av_expr_free(s->params[i].e);
462 1 : }
463 :
464 407 : void ff_blend_init(FilterParams *param, int is_16bit)
465 : {
466 407 : switch (param->mode) {
467 26 : case BLEND_ADDITION: param->blend = is_16bit ? blend_addition_16bit : blend_addition_8bit; break;
468 26 : case BLEND_GRAINMERGE: param->blend = is_16bit ? blend_grainmerge_16bit : blend_grainmerge_8bit; break;
469 26 : case BLEND_AND: param->blend = is_16bit ? blend_and_16bit : blend_and_8bit; break;
470 26 : case BLEND_AVERAGE: param->blend = is_16bit ? blend_average_16bit : blend_average_8bit; break;
471 0 : case BLEND_BURN: param->blend = is_16bit ? blend_burn_16bit : blend_burn_8bit; break;
472 26 : case BLEND_DARKEN: param->blend = is_16bit ? blend_darken_16bit : blend_darken_8bit; break;
473 26 : case BLEND_DIFFERENCE: param->blend = is_16bit ? blend_difference_16bit : blend_difference_8bit; break;
474 30 : case BLEND_GRAINEXTRACT: param->blend = is_16bit ? blend_grainextract_16bit: blend_grainextract_8bit; break;
475 0 : case BLEND_DIVIDE: param->blend = is_16bit ? blend_divide_16bit : blend_divide_8bit; break;
476 0 : case BLEND_DODGE: param->blend = is_16bit ? blend_dodge_16bit : blend_dodge_8bit; break;
477 0 : case BLEND_EXCLUSION: param->blend = is_16bit ? blend_exclusion_16bit : blend_exclusion_8bit; break;
478 26 : case BLEND_EXTREMITY: param->blend = is_16bit ? blend_extremity_16bit : blend_extremity_8bit; break;
479 0 : case BLEND_FREEZE: param->blend = is_16bit ? blend_freeze_16bit : blend_freeze_8bit; break;
480 0 : case BLEND_GLOW: param->blend = is_16bit ? blend_glow_16bit : blend_glow_8bit; break;
481 0 : case BLEND_HARDLIGHT: param->blend = is_16bit ? blend_hardlight_16bit : blend_hardlight_8bit; break;
482 13 : case BLEND_HARDMIX: param->blend = is_16bit ? blend_hardmix_16bit : blend_hardmix_8bit; break;
483 0 : case BLEND_HEAT: param->blend = is_16bit ? blend_heat_16bit : blend_heat_8bit; break;
484 26 : case BLEND_LIGHTEN: param->blend = is_16bit ? blend_lighten_16bit : blend_lighten_8bit; break;
485 0 : case BLEND_LINEARLIGHT:param->blend = is_16bit ? blend_linearlight_16bit: blend_linearlight_8bit;break;
486 13 : case BLEND_MULTIPLY: param->blend = is_16bit ? blend_multiply_16bit : blend_multiply_8bit; break;
487 0 : case BLEND_MULTIPLY128:param->blend = is_16bit ? blend_multiply128_16bit: blend_multiply128_8bit;break;
488 26 : case BLEND_NEGATION: param->blend = is_16bit ? blend_negation_16bit : blend_negation_8bit; break;
489 0 : case BLEND_NORMAL: param->blend = param->opacity == 1 ? blend_copytop :
490 0 : param->opacity == 0 ? blend_copybottom :
491 0 : is_16bit ? blend_normal_16bit : blend_normal_8bit; break;
492 26 : case BLEND_OR: param->blend = is_16bit ? blend_or_16bit : blend_or_8bit; break;
493 0 : case BLEND_OVERLAY: param->blend = is_16bit ? blend_overlay_16bit : blend_overlay_8bit; break;
494 26 : case BLEND_PHOENIX: param->blend = is_16bit ? blend_phoenix_16bit : blend_phoenix_8bit; break;
495 0 : case BLEND_PINLIGHT: param->blend = is_16bit ? blend_pinlight_16bit : blend_pinlight_8bit; break;
496 0 : case BLEND_REFLECT: param->blend = is_16bit ? blend_reflect_16bit : blend_reflect_8bit; break;
497 13 : case BLEND_SCREEN: param->blend = is_16bit ? blend_screen_16bit : blend_screen_8bit; break;
498 0 : case BLEND_SOFTLIGHT: param->blend = is_16bit ? blend_softlight_16bit : blend_softlight_8bit; break;
499 39 : case BLEND_SUBTRACT: param->blend = is_16bit ? blend_subtract_16bit : blend_subtract_8bit; break;
500 0 : case BLEND_VIVIDLIGHT: param->blend = is_16bit ? blend_vividlight_16bit : blend_vividlight_8bit; break;
501 13 : case BLEND_XOR: param->blend = is_16bit ? blend_xor_16bit : blend_xor_8bit; break;
502 : }
503 :
504 407 : if (param->opacity == 0 && param->mode != BLEND_NORMAL) {
505 0 : param->blend = blend_copytop;
506 : }
507 :
508 : if (ARCH_X86)
509 407 : ff_blend_init_x86(param, is_16bit);
510 407 : }
511 :
512 1 : static int config_output(AVFilterLink *outlink)
513 : {
514 1 : AVFilterContext *ctx = outlink->src;
515 1 : AVFilterLink *toplink = ctx->inputs[TOP];
516 1 : BlendContext *s = ctx->priv;
517 1 : const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(toplink->format);
518 : int ret, plane, is_16bit;
519 :
520 1 : if (!s->tblend) {
521 0 : AVFilterLink *bottomlink = ctx->inputs[BOTTOM];
522 :
523 0 : if (toplink->format != bottomlink->format) {
524 0 : av_log(ctx, AV_LOG_ERROR, "inputs must be of same pixel format\n");
525 0 : return AVERROR(EINVAL);
526 : }
527 0 : if (toplink->w != bottomlink->w || toplink->h != bottomlink->h) {
528 0 : av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
529 : "(size %dx%d) do not match the corresponding "
530 : "second input link %s parameters (size %dx%d)\n",
531 0 : ctx->input_pads[TOP].name, toplink->w, toplink->h,
532 0 : ctx->input_pads[BOTTOM].name, bottomlink->w, bottomlink->h);
533 0 : return AVERROR(EINVAL);
534 : }
535 : }
536 :
537 1 : outlink->w = toplink->w;
538 1 : outlink->h = toplink->h;
539 1 : outlink->time_base = toplink->time_base;
540 1 : outlink->sample_aspect_ratio = toplink->sample_aspect_ratio;
541 1 : outlink->frame_rate = toplink->frame_rate;
542 :
543 1 : s->hsub = pix_desc->log2_chroma_w;
544 1 : s->vsub = pix_desc->log2_chroma_h;
545 :
546 1 : is_16bit = pix_desc->comp[0].depth == 16;
547 1 : s->nb_planes = av_pix_fmt_count_planes(toplink->format);
548 :
549 1 : if (!s->tblend)
550 0 : if ((ret = ff_framesync_init_dualinput(&s->fs, ctx)) < 0)
551 0 : return ret;
552 :
553 5 : for (plane = 0; plane < FF_ARRAY_ELEMS(s->params); plane++) {
554 4 : FilterParams *param = &s->params[plane];
555 :
556 4 : if (s->all_mode >= 0)
557 4 : param->mode = s->all_mode;
558 4 : if (s->all_opacity < 1)
559 0 : param->opacity = s->all_opacity;
560 :
561 4 : ff_blend_init(param, is_16bit);
562 :
563 4 : if (s->all_expr && !param->expr_str) {
564 0 : param->expr_str = av_strdup(s->all_expr);
565 0 : if (!param->expr_str)
566 0 : return AVERROR(ENOMEM);
567 : }
568 4 : if (param->expr_str) {
569 0 : ret = av_expr_parse(¶m->e, param->expr_str, var_names,
570 : NULL, NULL, NULL, NULL, 0, ctx);
571 0 : if (ret < 0)
572 0 : return ret;
573 0 : param->blend = is_16bit? blend_expr_16bit : blend_expr_8bit;
574 : }
575 : }
576 :
577 1 : return s->tblend ? 0 : ff_framesync_configure(&s->fs);
578 : }
579 :
580 : #if CONFIG_BLEND_FILTER
581 :
582 0 : static int activate(AVFilterContext *ctx)
583 : {
584 0 : BlendContext *s = ctx->priv;
585 0 : return ff_framesync_activate(&s->fs);
586 : }
587 :
588 : static const AVFilterPad blend_inputs[] = {
589 : {
590 : .name = "top",
591 : .type = AVMEDIA_TYPE_VIDEO,
592 : },{
593 : .name = "bottom",
594 : .type = AVMEDIA_TYPE_VIDEO,
595 : },
596 : { NULL }
597 : };
598 :
599 : static const AVFilterPad blend_outputs[] = {
600 : {
601 : .name = "default",
602 : .type = AVMEDIA_TYPE_VIDEO,
603 : .config_props = config_output,
604 : },
605 : { NULL }
606 : };
607 :
608 : AVFilter ff_vf_blend = {
609 : .name = "blend",
610 : .description = NULL_IF_CONFIG_SMALL("Blend two video frames into each other."),
611 : .preinit = blend_framesync_preinit,
612 : .init = init,
613 : .uninit = uninit,
614 : .priv_size = sizeof(BlendContext),
615 : .query_formats = query_formats,
616 : .activate = activate,
617 : .inputs = blend_inputs,
618 : .outputs = blend_outputs,
619 : .priv_class = &blend_class,
620 : .flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
621 : };
622 :
623 : #endif
624 :
625 : #if CONFIG_TBLEND_FILTER
626 :
627 50 : static int tblend_filter_frame(AVFilterLink *inlink, AVFrame *frame)
628 : {
629 50 : BlendContext *s = inlink->dst->priv;
630 50 : AVFilterLink *outlink = inlink->dst->outputs[0];
631 :
632 50 : if (s->prev_frame) {
633 49 : AVFrame *out = blend_frame(inlink->dst, frame, s->prev_frame);
634 49 : av_frame_free(&s->prev_frame);
635 49 : s->prev_frame = frame;
636 49 : return ff_filter_frame(outlink, out);
637 : }
638 1 : s->prev_frame = frame;
639 1 : return 0;
640 : }
641 :
642 : static const AVOption tblend_options[] = {
643 : COMMON_OPTIONS,
644 : { NULL }
645 : };
646 :
647 : AVFILTER_DEFINE_CLASS(tblend);
648 :
649 : static const AVFilterPad tblend_inputs[] = {
650 : {
651 : .name = "default",
652 : .type = AVMEDIA_TYPE_VIDEO,
653 : .filter_frame = tblend_filter_frame,
654 : },
655 : { NULL }
656 : };
657 :
658 : static const AVFilterPad tblend_outputs[] = {
659 : {
660 : .name = "default",
661 : .type = AVMEDIA_TYPE_VIDEO,
662 : .config_props = config_output,
663 : },
664 : { NULL }
665 : };
666 :
667 : AVFilter ff_vf_tblend = {
668 : .name = "tblend",
669 : .description = NULL_IF_CONFIG_SMALL("Blend successive frames."),
670 : .priv_size = sizeof(BlendContext),
671 : .priv_class = &tblend_class,
672 : .query_formats = query_formats,
673 : .init = init,
674 : .uninit = uninit,
675 : .inputs = tblend_inputs,
676 : .outputs = tblend_outputs,
677 : .flags = AVFILTER_FLAG_SLICE_THREADS,
678 : };
679 :
680 : #endif
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