FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavfilter/vf_blend.c
Date: 2026-08-30 06:45:33
Exec Total Coverage
Lines: 132 157 84.1%
Functions: 12 15 80.0%
Branches: 59 90 65.6%
Line Branch Exec Source
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 "config_components.h"
22
23 #include "libavutil/eval.h"
24 #include "libavutil/mem.h"
25 #include "libavutil/opt.h"
26 #include "libavutil/pixfmt.h"
27 #include "avfilter.h"
28 #include "filters.h"
29 #include "framesync.h"
30 #include "vf_blend_init.h"
31 #include "video.h"
32 #include "blend.h"
33
34 #define TOP 0
35 #define BOTTOM 1
36
37 typedef struct BlendContext {
38 const AVClass *class;
39 FFFrameSync fs;
40 int hsub, vsub; ///< chroma subsampling values
41 int nb_planes;
42 char *all_expr;
43 /* enum BlendMode */
44 int all_mode;
45 double all_opacity;
46
47 int depth;
48 FilterParams params[4];
49 int tblend;
50 AVFrame *prev_frame; /* only used with tblend */
51 int nb_threads;
52 } BlendContext;
53
54 static const char *const var_names[] = { "X", "Y", "W", "H", "SW", "SH", "T", "N", "A", "B", "TOP", "BOTTOM", NULL };
55 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 };
56
57 typedef struct ThreadData {
58 const AVFrame *top, *bottom;
59 AVFrame *dst;
60 AVFilterLink *inlink;
61 int plane;
62 int w, h;
63 FilterParams *param;
64 } ThreadData;
65
66 #define OFFSET(x) offsetof(BlendContext, x)
67 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM|AV_OPT_FLAG_RUNTIME_PARAM
68
69 static const AVOption blend_options[] = {
70 { "c0_mode", "set component #0 blend mode", OFFSET(params[0].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, .unit = "mode" },
71 { "c1_mode", "set component #1 blend mode", OFFSET(params[1].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, .unit = "mode" },
72 { "c2_mode", "set component #2 blend mode", OFFSET(params[2].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, .unit = "mode" },
73 { "c3_mode", "set component #3 blend mode", OFFSET(params[3].mode), AV_OPT_TYPE_INT, {.i64=0}, 0, BLEND_NB-1, FLAGS, .unit = "mode" },
74 { "all_mode", "set blend mode for all components", OFFSET(all_mode), AV_OPT_TYPE_INT, {.i64=-1},-1, BLEND_NB-1, FLAGS, .unit = "mode" },
75 { "addition", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_ADDITION}, 0, 0, FLAGS, .unit = "mode" },
76 { "addition128","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINMERGE}, 0, 0, FLAGS, .unit = "mode" },
77 { "grainmerge", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINMERGE}, 0, 0, FLAGS, .unit = "mode" },
78 { "and", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_AND}, 0, 0, FLAGS, .unit = "mode" },
79 { "average", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_AVERAGE}, 0, 0, FLAGS, .unit = "mode" },
80 { "burn", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_BURN}, 0, 0, FLAGS, .unit = "mode" },
81 { "darken", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DARKEN}, 0, 0, FLAGS, .unit = "mode" },
82 { "difference", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DIFFERENCE}, 0, 0, FLAGS, .unit = "mode" },
83 { "difference128", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINEXTRACT}, 0, 0, FLAGS, .unit = "mode" },
84 { "grainextract", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GRAINEXTRACT}, 0, 0, FLAGS, .unit = "mode" },
85 { "divide", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DIVIDE}, 0, 0, FLAGS, .unit = "mode" },
86 { "dodge", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_DODGE}, 0, 0, FLAGS, .unit = "mode" },
87 { "exclusion", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_EXCLUSION}, 0, 0, FLAGS, .unit = "mode" },
88 { "extremity", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_EXTREMITY}, 0, 0, FLAGS, .unit = "mode" },
89 { "freeze", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_FREEZE}, 0, 0, FLAGS, .unit = "mode" },
90 { "glow", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GLOW}, 0, 0, FLAGS, .unit = "mode" },
91 { "hardlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARDLIGHT}, 0, 0, FLAGS, .unit = "mode" },
92 { "hardmix", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARDMIX}, 0, 0, FLAGS, .unit = "mode" },
93 { "heat", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HEAT}, 0, 0, FLAGS, .unit = "mode" },
94 { "lighten", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_LIGHTEN}, 0, 0, FLAGS, .unit = "mode" },
95 { "linearlight","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_LINEARLIGHT},0, 0, FLAGS, .unit = "mode" },
96 { "multiply", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_MULTIPLY}, 0, 0, FLAGS, .unit = "mode" },
97 { "multiply128","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_MULTIPLY128},0, 0, FLAGS, .unit = "mode" },
98 { "negation", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_NEGATION}, 0, 0, FLAGS, .unit = "mode" },
99 { "normal", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_NORMAL}, 0, 0, FLAGS, .unit = "mode" },
100 { "or", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_OR}, 0, 0, FLAGS, .unit = "mode" },
101 { "overlay", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_OVERLAY}, 0, 0, FLAGS, .unit = "mode" },
102 { "phoenix", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_PHOENIX}, 0, 0, FLAGS, .unit = "mode" },
103 { "pinlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_PINLIGHT}, 0, 0, FLAGS, .unit = "mode" },
104 { "reflect", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_REFLECT}, 0, 0, FLAGS, .unit = "mode" },
105 { "screen", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SCREEN}, 0, 0, FLAGS, .unit = "mode" },
106 { "softlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SOFTLIGHT}, 0, 0, FLAGS, .unit = "mode" },
107 { "subtract", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SUBTRACT}, 0, 0, FLAGS, .unit = "mode" },
108 { "vividlight", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_VIVIDLIGHT}, 0, 0, FLAGS, .unit = "mode" },
109 { "xor", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_XOR}, 0, 0, FLAGS, .unit = "mode" },
110 { "softdifference","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_SOFTDIFFERENCE}, 0, 0, FLAGS, .unit = "mode" },
111 { "geometric", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_GEOMETRIC}, 0, 0, FLAGS, .unit = "mode" },
112 { "harmonic", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARMONIC}, 0, 0, FLAGS, .unit = "mode" },
113 { "bleach", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_BLEACH}, 0, 0, FLAGS, .unit = "mode" },
114 { "stain", "", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_STAIN}, 0, 0, FLAGS, .unit = "mode" },
115 { "interpolate","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_INTERPOLATE},0, 0, FLAGS, .unit = "mode" },
116 { "hardoverlay","", 0, AV_OPT_TYPE_CONST, {.i64=BLEND_HARDOVERLAY},0, 0, FLAGS, .unit = "mode" },
117 { "c0_expr", "set color component #0 expression", OFFSET(params[0].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
118 { "c1_expr", "set color component #1 expression", OFFSET(params[1].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
119 { "c2_expr", "set color component #2 expression", OFFSET(params[2].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
120 { "c3_expr", "set color component #3 expression", OFFSET(params[3].expr_str), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
121 { "all_expr", "set expression for all color components", OFFSET(all_expr), AV_OPT_TYPE_STRING, {.str=NULL}, 0, 0, FLAGS },
122 { "c0_opacity", "set color component #0 opacity", OFFSET(params[0].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
123 { "c1_opacity", "set color component #1 opacity", OFFSET(params[1].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
124 { "c2_opacity", "set color component #2 opacity", OFFSET(params[2].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
125 { "c3_opacity", "set color component #3 opacity", OFFSET(params[3].opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
126 { "all_opacity", "set opacity for all color components", OFFSET(all_opacity), AV_OPT_TYPE_DOUBLE, {.dbl=1}, 0, 1, FLAGS },
127 { NULL }
128 };
129
130
2/2
✓ Branch 0 taken 2 times.
✓ Branch 1 taken 2 times.
 12 FRAMESYNC_DEFINE_CLASS(blend, BlendContext, fs);
131
132 #define DEFINE_BLEND_EXPR(type, name, div, clip) \
133 static void blend_expr_## name(const uint8_t *_top, ptrdiff_t top_linesize, \
134 const uint8_t *_bottom, ptrdiff_t bottom_linesize, \
135 uint8_t *_dst, ptrdiff_t dst_linesize, \
136 ptrdiff_t width, ptrdiff_t height, \
137 FilterParams *param, SliceParams *sliceparam) \
138 { \
139 const type *top = (const type*)_top; \
140 const type *bottom = (const type*)_bottom; \
141 double *values = sliceparam->values; \
142 int starty = sliceparam->starty; \
143 type *dst = (type*)_dst; \
144 AVExpr *e = sliceparam->e; \
145 int y, x; \
146 dst_linesize /= div; \
147 top_linesize /= div; \
148 bottom_linesize /= div; \
149 \
150 for (y = 0; y < height; y++) { \
151 values[VAR_Y] = y + starty; \
152 for (x = 0; x < width; x++) { \
153 values[VAR_X] = x; \
154 values[VAR_TOP] = values[VAR_A] = top[x]; \
155 values[VAR_BOTTOM] = values[VAR_B] = bottom[x]; \
156 double value = av_expr_eval(e, values, NULL); \
157 dst[x] = clip ? av_clipd(value, 0, param->max_value) : value; \
158 } \
159 dst += dst_linesize; \
160 top += top_linesize; \
161 bottom += bottom_linesize; \
162 } \
163 }
164
165 ✗ DEFINE_BLEND_EXPR(uint8_t, 8bit, 1, 1)
166
4/4
✓ Branch 1 taken 1 times.
✓ Branch 2 taken 1 times.
✓ Branch 3 taken 1 times.
✓ Branch 4 taken 1 times.
 3 DEFINE_BLEND_EXPR(uint16_t, 16bit, 2, 1)
167 ✗ DEFINE_BLEND_EXPR(float, 32bit, 4, 0)
168
169 1324 static int filter_slice(AVFilterContext *ctx, void *arg, int jobnr, int nb_jobs)
170 {
171 1324 ThreadData *td = arg;
172 1324 int slice_start = ff_slice_pos(td->h, jobnr, nb_jobs);
173 1324 int slice_end = ff_slice_pos(td->h, jobnr + 1, nb_jobs);
174 1324 int height = slice_end - slice_start;
175 1324 const uint8_t *top = td->top->data[td->plane];
176 1324 const uint8_t *bottom = td->bottom->data[td->plane];
177 1324 uint8_t *dst = td->dst->data[td->plane];
178 1324 FilterLink *inl = ff_filter_link(td->inlink);
179 double values[VAR_VARS_NB];
180
2/2
✓ Branch 0 taken 1 times.
✓ Branch 1 taken 1323 times.
 1324 SliceParams sliceparam = {.values = &values[0], .starty = slice_start, .e = td->param->e ? td->param->e[jobnr] : NULL};
181
182 1324 values[VAR_N] = inl->frame_count_out;
183
1/2
✓ Branch 0 taken 1324 times.
✗ Branch 1 not taken.
 1324 values[VAR_T] = td->dst->pts == AV_NOPTS_VALUE ? NAN : td->dst->pts * av_q2d(td->inlink->time_base);
184 1324 values[VAR_W] = td->w;
185 1324 values[VAR_H] = td->h;
186 1324 values[VAR_SW] = td->w / (double)td->dst->width;
187 1324 values[VAR_SH] = td->h / (double)td->dst->height;
188
189 1324 td->param->blend(top + slice_start * td->top->linesize[td->plane],
190 1324 td->top->linesize[td->plane],
191 1324 bottom + slice_start * td->bottom->linesize[td->plane],
192 1324 td->bottom->linesize[td->plane],
193 1324 dst + slice_start * td->dst->linesize[td->plane],
194 1324 td->dst->linesize[td->plane],
195 1324 td->w, height, td->param, &sliceparam);
196 1324 return 0;
197 }
198
199 50 static AVFrame *blend_frame(AVFilterContext *ctx, AVFrame *top_buf,
200 const AVFrame *bottom_buf)
201 {
202 50 BlendContext *s = ctx->priv;
203 50 AVFilterLink *inlink = ctx->inputs[0];
204 50 AVFilterLink *outlink = ctx->outputs[0];
205 AVFrame *dst_buf;
206 int plane;
207
208 50 dst_buf = ff_get_video_buffer(outlink, outlink->w, outlink->h);
209
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 50 times.
 50 if (!dst_buf)
210 ✗ return top_buf;
211
212
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 50 times.
 50 if (av_frame_copy_props(dst_buf, top_buf) < 0) {
213 ✗ av_frame_free(&dst_buf);
214 ✗ return top_buf;
215 }
216
217
2/2
✓ Branch 0 taken 148 times.
✓ Branch 1 taken 50 times.
 198 for (plane = 0; plane < s->nb_planes; plane++) {
218
4/4
✓ Branch 0 taken 99 times.
✓ Branch 1 taken 49 times.
✓ Branch 2 taken 49 times.
✓ Branch 3 taken 50 times.
 148 int hsub = plane == 1 || plane == 2 ? s->hsub : 0;
219
4/4
✓ Branch 0 taken 99 times.
✓ Branch 1 taken 49 times.
✓ Branch 2 taken 49 times.
✓ Branch 3 taken 50 times.
 148 int vsub = plane == 1 || plane == 2 ? s->vsub : 0;
220 148 int outw = AV_CEIL_RSHIFT(dst_buf->width, hsub);
221 148 int outh = AV_CEIL_RSHIFT(dst_buf->height, vsub);
222 148 FilterParams *param = &s->params[plane];
223 148 ThreadData td = { .top = top_buf, .bottom = bottom_buf, .dst = dst_buf,
224 .w = outw, .h = outh, .param = param, .plane = plane,
225 .inlink = inlink };
226
227 148 ff_filter_execute(ctx, filter_slice, &td, NULL,
228 148 FFMIN(outh, s->nb_threads));
229 }
230
231
2/2
✓ Branch 0 taken 1 times.
✓ Branch 1 taken 49 times.
 50 if (!s->tblend)
232 1 av_frame_free(&top_buf);
233
234 50 return dst_buf;
235 }
236
237 1 static int blend_frame_for_dualinput(FFFrameSync *fs)
238 {
239 1 AVFilterContext *ctx = fs->parent;
240 AVFrame *top_buf, *bottom_buf, *dst_buf;
241 int ret;
242
243 1 ret = ff_framesync_dualinput_get(fs, &top_buf, &bottom_buf);
244
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1 times.
 1 if (ret < 0)
245 ✗ return ret;
246
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1 times.
 1 if (!bottom_buf)
247 ✗ return ff_filter_frame(ctx->outputs[0], top_buf);
248 1 dst_buf = blend_frame(ctx, top_buf, bottom_buf);
249 1 return ff_filter_frame(ctx->outputs[0], dst_buf);
250 }
251
252 4 static av_cold int init(AVFilterContext *ctx)
253 {
254 4 BlendContext *s = ctx->priv;
255
256 4 s->tblend = !strcmp(ctx->filter->name, "tblend");
257 4 s->nb_threads = ff_filter_get_nb_threads(ctx);
258
259 4 s->fs.on_event = blend_frame_for_dualinput;
260 4 return 0;
261 }
262
263 static const enum AVPixelFormat pix_fmts[] = {
264 AV_PIX_FMT_YUVA444P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA420P,
265 AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ422P,AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ411P,
266 AV_PIX_FMT_YUV444P, AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV411P, AV_PIX_FMT_YUV410P,
267 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRAP, AV_PIX_FMT_GRAY8,
268 AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
269 AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GRAY9,
270 AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10, AV_PIX_FMT_YUV440P10,
271 AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA444P10,
272 AV_PIX_FMT_GBRP10, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GRAY10,
273 AV_PIX_FMT_YUV420P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV440P12,
274 AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA444P12,
275 AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GRAY12,
276 AV_PIX_FMT_YUV420P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV444P14, AV_PIX_FMT_GBRP14,
277 AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
278 AV_PIX_FMT_YUVA420P16, AV_PIX_FMT_YUVA422P16, AV_PIX_FMT_YUVA444P16,
279 AV_PIX_FMT_GBRP16, AV_PIX_FMT_GBRAP16, AV_PIX_FMT_GRAY16,
280 AV_PIX_FMT_GBRPF32, AV_PIX_FMT_GBRAPF32, AV_PIX_FMT_GRAYF32,
281 AV_PIX_FMT_NONE
282 };
283
284 4 static av_cold void uninit(AVFilterContext *ctx)
285 {
286 4 BlendContext *s = ctx->priv;
287 int i;
288
289 4 ff_framesync_uninit(&s->fs);
290 4 av_frame_free(&s->prev_frame);
291
292
2/2
✓ Branch 0 taken 16 times.
✓ Branch 1 taken 4 times.
 20 for (i = 0; i < FF_ARRAY_ELEMS(s->params); i++) {
293
2/2
✓ Branch 0 taken 1 times.
✓ Branch 1 taken 15 times.
 16 if (s->params[i].e) {
294
2/2
✓ Branch 0 taken 9 times.
✓ Branch 1 taken 1 times.
 10 for (int j = 0; j < s->nb_threads; j++)
295 9 av_expr_free(s->params[i].e[j]);
296 1 av_freep(&s->params[i].e);
297 }
298 }
299
300 4 }
301
302 2 static int config_params(AVFilterContext *ctx)
303 {
304 2 BlendContext *s = ctx->priv;
305 int ret;
306
307
2/2
✓ Branch 0 taken 8 times.
✓ Branch 1 taken 2 times.
 10 for (int plane = 0; plane < FF_ARRAY_ELEMS(s->params); plane++) {
308 8 FilterParams *param = &s->params[plane];
309
310 8 param->max_value = UINT32_MAX >> (32 - s->depth);
311
312
2/2
✓ Branch 0 taken 4 times.
✓ Branch 1 taken 4 times.
 8 if (s->all_mode >= 0)
313 4 param->mode = s->all_mode;
314
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 8 times.
 8 if (s->all_opacity < 1)
315 ✗ param->opacity = s->all_opacity;
316
317 8 ff_blend_init(param, s->depth);
318
319
1/4
✗ Branch 0 not taken.
✓ Branch 1 taken 8 times.
✗ Branch 2 not taken.
✗ Branch 3 not taken.
 8 if (s->all_expr && !param->expr_str) {
320 ✗ param->expr_str = av_strdup(s->all_expr);
321 ✗ if (!param->expr_str)
322 ✗ return AVERROR(ENOMEM);
323 }
324
2/2
✓ Branch 0 taken 1 times.
✓ Branch 1 taken 7 times.
 8 if (param->expr_str) {
325
1/2
✓ Branch 0 taken 1 times.
✗ Branch 1 not taken.
 1 if (!param->e) {
326 1 param->e = av_calloc(s->nb_threads, sizeof(*param->e));
327
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 1 times.
 1 if (!param->e)
328 ✗ return AVERROR(ENOMEM);
329 }
330
2/2
✓ Branch 0 taken 9 times.
✓ Branch 1 taken 1 times.
 10 for (int i = 0; i < s->nb_threads; i++) {
331 9 av_expr_free(param->e[i]);
332 9 param->e[i] = NULL;
333 9 ret = av_expr_parse(&param->e[i], param->expr_str, var_names,
334 NULL, NULL, NULL, NULL, 0, ctx);
335
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 9 times.
 9 if (ret < 0)
336 ✗ return ret;
337 }
338
2/4
✓ Branch 0 taken 1 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 1 times.
 1 param->blend = s->depth > 8 ? s->depth > 16 ? blend_expr_32bit : blend_expr_16bit : blend_expr_8bit;
339 }
340 }
341
342 2 return 0;
343 }
344
345 2 static int config_output(AVFilterLink *outlink)
346 {
347 2 FilterLink *outl = ff_filter_link(outlink);
348 2 AVFilterContext *ctx = outlink->src;
349 2 AVFilterLink *toplink = ctx->inputs[TOP];
350 2 FilterLink *tl = ff_filter_link(toplink);
351 2 BlendContext *s = ctx->priv;
352 2 const AVPixFmtDescriptor *pix_desc = av_pix_fmt_desc_get(toplink->format);
353 int ret;
354
355
2/2
✓ Branch 0 taken 1 times.
✓ Branch 1 taken 1 times.
 2 if (!s->tblend) {
356 1 AVFilterLink *bottomlink = ctx->inputs[BOTTOM];
357
358
2/4
✓ Branch 0 taken 1 times.
✗ Branch 1 not taken.
✗ Branch 2 not taken.
✓ Branch 3 taken 1 times.
 1 if (toplink->w != bottomlink->w || toplink->h != bottomlink->h) {
359 ✗ av_log(ctx, AV_LOG_ERROR, "First input link %s parameters "
360 "(size %dx%d) do not match the corresponding "
361 "second input link %s parameters (size %dx%d)\n",
362 ✗ ctx->input_pads[TOP].name, toplink->w, toplink->h,
363 ✗ ctx->input_pads[BOTTOM].name, bottomlink->w, bottomlink->h);
364 ✗ return AVERROR(EINVAL);
365 }
366 }
367
368 2 outlink->w = toplink->w;
369 2 outlink->h = toplink->h;
370 2 outlink->time_base = toplink->time_base;
371 2 outlink->sample_aspect_ratio = toplink->sample_aspect_ratio;
372 2 outl->frame_rate = tl->frame_rate;
373
374 2 s->hsub = pix_desc->log2_chroma_w;
375 2 s->vsub = pix_desc->log2_chroma_h;
376
377 2 s->depth = pix_desc->comp[0].depth;
378 2 s->nb_planes = av_pix_fmt_count_planes(toplink->format);
379
380
2/2
✓ Branch 0 taken 1 times.
✓ Branch 1 taken 1 times.
 2 if (!s->tblend)
381
1/2
✗ Branch 1 not taken.
✓ Branch 2 taken 1 times.
 1 if ((ret = ff_framesync_init_dualinput(&s->fs, ctx)) < 0)
382 ✗ return ret;
383
384 2 ret = config_params(ctx);
385
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 2 times.
 2 if (ret < 0)
386 ✗ return ret;
387
388
2/2
✓ Branch 0 taken 1 times.
✓ Branch 1 taken 1 times.
 2 if (s->tblend)
389 1 return 0;
390
391 1 ret = ff_framesync_configure(&s->fs);
392 1 outlink->time_base = s->fs.time_base;
393
394 1 return ret;
395 }
396
397 ✗ static int process_command(AVFilterContext *ctx, const char *cmd, const char *args,
398 char *res, int res_len, int flags)
399 {
400 int ret;
401
402 ✗ ret = ff_filter_process_command(ctx, cmd, args, res, res_len, flags);
403 ✗ if (ret < 0)
404 ✗ return ret;
405
406 ✗ return config_params(ctx);
407 }
408
409 static const AVFilterPad blend_outputs[] = {
410 {
411 .name = "default",
412 .type = AVMEDIA_TYPE_VIDEO,
413 .config_props = config_output,
414 },
415 };
416
417 #if CONFIG_BLEND_FILTER
418
419 4 static int activate(AVFilterContext *ctx)
420 {
421 4 BlendContext *s = ctx->priv;
422 4 return ff_framesync_activate(&s->fs);
423 }
424
425 static const AVFilterPad blend_inputs[] = {
426 {
427 .name = "top",
428 .type = AVMEDIA_TYPE_VIDEO,
429 },{
430 .name = "bottom",
431 .type = AVMEDIA_TYPE_VIDEO,
432 },
433 };
434
435 const FFFilter ff_vf_blend = {
436 .p.name = "blend",
437 .p.description = NULL_IF_CONFIG_SMALL("Blend two video frames into each other."),
438 .p.priv_class = &blend_class,
439 .p.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
440 .preinit = blend_framesync_preinit,
441 .init = init,
442 .uninit = uninit,
443 .priv_size = sizeof(BlendContext),
444 .activate = activate,
445 FILTER_INPUTS(blend_inputs),
446 FILTER_OUTPUTS(blend_outputs),
447 FILTER_PIXFMTS_ARRAY(pix_fmts),
448 .process_command = process_command,
449 };
450
451 #endif
452
453 #if CONFIG_TBLEND_FILTER
454
455 50 static int tblend_filter_frame(AVFilterLink *inlink, AVFrame *frame)
456 {
457 50 AVFilterContext *ctx = inlink->dst;
458 50 BlendContext *s = ctx->priv;
459 50 AVFilterLink *outlink = ctx->outputs[0];
460
461
2/2
✓ Branch 0 taken 49 times.
✓ Branch 1 taken 1 times.
 50 if (s->prev_frame) {
462 AVFrame *out;
463
464
1/2
✗ Branch 0 not taken.
✓ Branch 1 taken 49 times.
 49 if (ctx->is_disabled)
465 ✗ out = av_frame_clone(frame);
466 else
467 49 out = blend_frame(ctx, frame, s->prev_frame);
468 49 av_frame_free(&s->prev_frame);
469 49 s->prev_frame = frame;
470 49 return ff_filter_frame(outlink, out);
471 }
472 1 s->prev_frame = frame;
473 1 return 0;
474 }
475
476 AVFILTER_DEFINE_CLASS_EXT(tblend, "tblend", blend_options);
477
478 static const AVFilterPad tblend_inputs[] = {
479 {
480 .name = "default",
481 .type = AVMEDIA_TYPE_VIDEO,
482 .filter_frame = tblend_filter_frame,
483 },
484 };
485
486 const FFFilter ff_vf_tblend = {
487 .p.name = "tblend",
488 .p.description = NULL_IF_CONFIG_SMALL("Blend successive frames."),
489 .p.priv_class = &tblend_class,
490 .p.flags = AVFILTER_FLAG_SUPPORT_TIMELINE_INTERNAL | AVFILTER_FLAG_SLICE_THREADS,
491 .priv_size = sizeof(BlendContext),
492 .init = init,
493 .uninit = uninit,
494 FILTER_INPUTS(tblend_inputs),
495 FILTER_OUTPUTS(blend_outputs),
496 FILTER_PIXFMTS_ARRAY(pix_fmts),
497 .process_command = process_command,
498 };
499
500 #endif
501