FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavfilter/vf_mergeplanes.c
Date: 2025-10-29 00:48:36
Exec Total Coverage
Lines: 114 141 80.9%
Functions: 6 6 100.0%
Branches: 46 72 63.9%
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 "libavutil/avassert.h"
22 #include "libavutil/avstring.h"
23 #include "libavutil/imgutils.h"
24 #include "libavutil/opt.h"
25 #include "libavutil/pixdesc.h"
26 #include "avfilter.h"
27 #include "filters.h"
28 #include "formats.h"
29 #include "framesync.h"
30 #include "video.h"
31
32 typedef struct Mapping {
33 int input;
34 int plane;
35 } Mapping;
36
37 typedef struct InputParam {
38 int depth[4];
39 int nb_planes;
40 int planewidth[4];
41 int planeheight[4];
42 } InputParam;
43
44 typedef struct MergePlanesContext {
45 const AVClass *class;
46 int64_t mapping;
47 const enum AVPixelFormat out_fmt;
48 int nb_inputs;
49 int nb_planes;
50 int planewidth[4];
51 int planeheight[4];
52 Mapping map[4];
53 const AVPixFmtDescriptor *indesc[4];
54 const AVPixFmtDescriptor *outdesc;
55
56 FFFrameSync fs;
57 } MergePlanesContext;
58
59 #define OFFSET(x) offsetof(MergePlanesContext, x)
60 #define FLAGS AV_OPT_FLAG_FILTERING_PARAM|AV_OPT_FLAG_VIDEO_PARAM
61 static const AVOption mergeplanes_options[] = {
62 { "mapping", "set input to output plane mapping", OFFSET(mapping), AV_OPT_TYPE_INT, {.i64=-1}, -1, 0x33333333, FLAGS|AV_OPT_FLAG_DEPRECATED },
63 { "format", "set output pixel format", OFFSET(out_fmt), AV_OPT_TYPE_PIXEL_FMT, {.i64=AV_PIX_FMT_YUVA444P}, 0, INT_MAX, .flags=FLAGS },
64 { "map0s", "set 1st input to output stream mapping", OFFSET(map[0].input), AV_OPT_TYPE_INT, {.i64=0}, 0, 3, FLAGS },
65 { "map0p", "set 1st input to output plane mapping", OFFSET(map[0].plane), AV_OPT_TYPE_INT, {.i64=0}, 0, 3, FLAGS },
66 { "map1s", "set 2nd input to output stream mapping", OFFSET(map[1].input), AV_OPT_TYPE_INT, {.i64=0}, 0, 3, FLAGS },
67 { "map1p", "set 2nd input to output plane mapping", OFFSET(map[1].plane), AV_OPT_TYPE_INT, {.i64=0}, 0, 3, FLAGS },
68 { "map2s", "set 3rd input to output stream mapping", OFFSET(map[2].input), AV_OPT_TYPE_INT, {.i64=0}, 0, 3, FLAGS },
69 { "map2p", "set 3rd input to output plane mapping", OFFSET(map[2].plane), AV_OPT_TYPE_INT, {.i64=0}, 0, 3, FLAGS },
70 { "map3s", "set 4th input to output stream mapping", OFFSET(map[3].input), AV_OPT_TYPE_INT, {.i64=0}, 0, 3, FLAGS },
71 { "map3p", "set 4th input to output plane mapping", OFFSET(map[3].plane), AV_OPT_TYPE_INT, {.i64=0}, 0, 3, FLAGS },
72 { NULL }
73 };
74
75 AVFILTER_DEFINE_CLASS(mergeplanes);
76
77 2 static av_cold int init(AVFilterContext *ctx)
78 {
79 2 MergePlanesContext *s = ctx->priv;
80 2 int64_t m = s->mapping;
81 int i, ret;
82
83 2 s->outdesc = av_pix_fmt_desc_get(s->out_fmt);
84
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 2 if (!(s->outdesc->flags & AV_PIX_FMT_FLAG_PLANAR) ||
85
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 2 s->outdesc->nb_components < 2) {
86 ✗ av_log(ctx, AV_LOG_ERROR, "Only planar formats with more than one component are supported.\n");
87 ✗ return AVERROR(EINVAL);
88 }
89 2 s->nb_planes = av_pix_fmt_count_planes(s->out_fmt);
90
91
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 8 for (i = s->nb_planes - 1; i >= 0; i--) {
92
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 6 if (m >= 0 && m <= 0x33333333) {
93 6 s->map[i].plane = m & 0xf;
94 6 m >>= 4;
95 6 s->map[i].input = m & 0xf;
96 6 m >>= 4;
97 }
98
99
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 6 if (s->map[i].plane > 3 || s->map[i].input > 3) {
100 ✗ av_log(ctx, AV_LOG_ERROR, "Mapping with out of range input and/or plane number.\n");
101 ✗ return AVERROR(EINVAL);
102 }
103
104 6 s->nb_inputs = FFMAX(s->nb_inputs, s->map[i].input + 1);
105 }
106
107
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 2 av_assert0(s->nb_inputs && s->nb_inputs <= 4);
108
109
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 4 for (i = 0; i < s->nb_inputs; i++) {
110 2 AVFilterPad pad = { 0 };
111
112 2 pad.type = AVMEDIA_TYPE_VIDEO;
113 2 pad.name = av_asprintf("in%d", i);
114
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 2 if (!pad.name)
115 ✗ return AVERROR(ENOMEM);
116
117
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 2 if ((ret = ff_append_inpad_free_name(ctx, &pad)) < 0)
118 ✗ return ret;
119 }
120
121 2 return 0;
122 }
123
124 1 static int query_formats(const AVFilterContext *ctx,
125 AVFilterFormatsConfig **cfg_in,
126 AVFilterFormatsConfig **cfg_out)
127 {
128 1 const MergePlanesContext *s = ctx->priv;
129 1 AVFilterFormats *formats = NULL;
130 int i, ret;
131
132
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 280 for (i = 0; av_pix_fmt_desc_get(i); i++) {
133 279 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(i);
134
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 279 if (desc->comp[0].depth == s->outdesc->comp[0].depth &&
135
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 43 (desc->comp[0].depth <= 8 || (desc->flags & AV_PIX_FMT_FLAG_BE) == (s->outdesc->flags & AV_PIX_FMT_FLAG_BE)) &&
136
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 61 av_pix_fmt_count_planes(i) == desc->nb_components &&
137 18 (ret = ff_add_format(&formats, i)) < 0)
138 ✗ return ret;
139 }
140
141
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 2 for (i = 0; i < s->nb_inputs; i++)
142
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 1 if ((ret = ff_formats_ref(formats, &cfg_in[i]->formats)) < 0)
143 ✗ return ret;
144
145 1 formats = NULL;
146
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 2 if ((ret = ff_add_format(&formats, s->out_fmt)) < 0 ||
147 1 (ret = ff_formats_ref(formats, &cfg_out[0]->formats)) < 0)
148 ✗ return ret;
149
150 1 return 0;
151 }
152
153 50 static int process_frame(FFFrameSync *fs)
154 {
155 50 AVFilterContext *ctx = fs->parent;
156 50 AVFilterLink *outlink = ctx->outputs[0];
157 50 MergePlanesContext *s = fs->opaque;
158 50 AVFrame *in[4] = { NULL };
159 AVFrame *out;
160 int i, ret;
161
162
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 100 for (i = 0; i < s->nb_inputs; i++) {
163
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 50 if ((ret = ff_framesync_get_frame(&s->fs, i, &in[i], 0)) < 0)
164 ✗ return ret;
165 }
166
167 50 out = ff_get_video_buffer(outlink, outlink->w, outlink->h);
168
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 50 if (!out)
169 ✗ return AVERROR(ENOMEM);
170 50 out->pts = av_rescale_q(s->fs.pts, s->fs.time_base, outlink->time_base);
171
172
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 200 for (i = 0; i < s->nb_planes; i++) {
173 150 const int input = s->map[i].input;
174 150 const int plane = s->map[i].plane;
175
176 150 av_image_copy_plane(out->data[i], out->linesize[i],
177 150 in[input]->data[plane], in[input]->linesize[plane],
178 150 s->planewidth[i] * ((s->indesc[input]->comp[plane].depth + 7) / 8),
179 s->planeheight[i]);
180 }
181
182 50 return ff_filter_frame(outlink, out);
183 }
184
185 1 static int config_output(AVFilterLink *outlink)
186 {
187 1 AVFilterContext *ctx = outlink->src;
188 1 MergePlanesContext *s = ctx->priv;
189 1 FilterLink *il = ff_filter_link(ctx->inputs[0]);
190 1 FilterLink *ol = ff_filter_link(outlink);
191 InputParam inputsp[4];
192 FFFrameSyncIn *in;
193 int i, ret;
194
195
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 1 if ((ret = ff_framesync_init(&s->fs, ctx, s->nb_inputs)) < 0)
196 ✗ return ret;
197
198 1 in = s->fs.in;
199 1 s->fs.opaque = s;
200 1 s->fs.on_event = process_frame;
201
202 1 outlink->w = ctx->inputs[0]->w;
203 1 outlink->h = ctx->inputs[0]->h;
204 1 outlink->time_base = ctx->inputs[0]->time_base;
205 1 ol->frame_rate = il->frame_rate;
206 1 outlink->sample_aspect_ratio = ctx->inputs[0]->sample_aspect_ratio;
207
208 1 s->planewidth[1] =
209 1 s->planewidth[2] = AV_CEIL_RSHIFT(outlink->w, s->outdesc->log2_chroma_w);
210 1 s->planewidth[0] =
211 1 s->planewidth[3] = outlink->w;
212 1 s->planeheight[1] =
213 1 s->planeheight[2] = AV_CEIL_RSHIFT(outlink->h, s->outdesc->log2_chroma_h);
214 1 s->planeheight[0] =
215 1 s->planeheight[3] = outlink->h;
216
217
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 2 for (i = 0; i < s->nb_inputs; i++) {
218 1 InputParam *inputp = &inputsp[i];
219 1 AVFilterLink *inlink = ctx->inputs[i];
220 1 s->indesc[i] = av_pix_fmt_desc_get(inlink->format);
221
222
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 1 if (outlink->sample_aspect_ratio.num != inlink->sample_aspect_ratio.num ||
223
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 1 outlink->sample_aspect_ratio.den != inlink->sample_aspect_ratio.den) {
224 ✗ av_log(ctx, AV_LOG_ERROR, "input #%d link %s SAR %d:%d "
225 "does not match output link %s SAR %d:%d\n",
226 ✗ i, ctx->input_pads[i].name,
227 inlink->sample_aspect_ratio.num,
228 inlink->sample_aspect_ratio.den,
229 ✗ ctx->output_pads[0].name,
230 outlink->sample_aspect_ratio.num,
231 outlink->sample_aspect_ratio.den);
232 ✗ return AVERROR(EINVAL);
233 }
234
235 1 inputp->planewidth[1] =
236 1 inputp->planewidth[2] = AV_CEIL_RSHIFT(inlink->w, s->indesc[i]->log2_chroma_w);
237 1 inputp->planewidth[0] =
238 1 inputp->planewidth[3] = inlink->w;
239 1 inputp->planeheight[1] =
240 1 inputp->planeheight[2] = AV_CEIL_RSHIFT(inlink->h, s->indesc[i]->log2_chroma_h);
241 1 inputp->planeheight[0] =
242 1 inputp->planeheight[3] = inlink->h;
243 1 inputp->nb_planes = av_pix_fmt_count_planes(inlink->format);
244
245
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 4 for (int j = 0; j < inputp->nb_planes; j++)
246 3 inputp->depth[j] = s->indesc[i]->comp[j].depth;
247
248 1 in[i].time_base = inlink->time_base;
249 1 in[i].sync = 1;
250 1 in[i].before = EXT_STOP;
251 1 in[i].after = EXT_STOP;
252 }
253
254
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 4 for (i = 0; i < s->nb_planes; i++) {
255 3 const int input = s->map[i].input;
256 3 const int plane = s->map[i].plane;
257 3 InputParam *inputp = &inputsp[input];
258
259
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 3 if (plane + 1 > inputp->nb_planes) {
260 ✗ av_log(ctx, AV_LOG_ERROR, "input %d does not have %d plane\n",
261 input, plane);
262 ✗ goto fail;
263 }
264
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 3 if (s->outdesc->comp[i].depth != inputp->depth[plane]) {
265 ✗ av_log(ctx, AV_LOG_ERROR, "output plane %d depth %d does not "
266 "match input %d plane %d depth %d\n",
267 ✗ i, s->outdesc->comp[i].depth,
268 input, plane, inputp->depth[plane]);
269 ✗ goto fail;
270 }
271
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 3 if (s->planewidth[i] != inputp->planewidth[plane]) {
272 ✗ av_log(ctx, AV_LOG_ERROR, "output plane %d width %d does not "
273 "match input %d plane %d width %d\n",
274 i, s->planewidth[i],
275 input, plane, inputp->planewidth[plane]);
276 ✗ goto fail;
277 }
278
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 3 if (s->planeheight[i] != inputp->planeheight[plane]) {
279 ✗ av_log(ctx, AV_LOG_ERROR, "output plane %d height %d does not "
280 "match input %d plane %d height %d\n",
281 i, s->planeheight[i],
282 input, plane, inputp->planeheight[plane]);
283 ✗ goto fail;
284 }
285 }
286
287 1 return ff_framesync_configure(&s->fs);
288 ✗ fail:
289 ✗ return AVERROR(EINVAL);
290 }
291
292 101 static int activate(AVFilterContext *ctx)
293 {
294 101 MergePlanesContext *s = ctx->priv;
295 101 return ff_framesync_activate(&s->fs);
296 }
297
298 2 static av_cold void uninit(AVFilterContext *ctx)
299 {
300 2 MergePlanesContext *s = ctx->priv;
301
302 2 ff_framesync_uninit(&s->fs);
303 2 }
304
305 static const AVFilterPad mergeplanes_outputs[] = {
306 {
307 .name = "default",
308 .type = AVMEDIA_TYPE_VIDEO,
309 .config_props = config_output,
310 },
311 };
312
313 const FFFilter ff_vf_mergeplanes = {
314 .p.name = "mergeplanes",
315 .p.description = NULL_IF_CONFIG_SMALL("Merge planes."),
316 .p.priv_class = &mergeplanes_class,
317 .p.inputs = NULL,
318 .p.flags = AVFILTER_FLAG_DYNAMIC_INPUTS,
319 .priv_size = sizeof(MergePlanesContext),
320 .init = init,
321 .uninit = uninit,
322 .activate = activate,
323 FILTER_OUTPUTS(mergeplanes_outputs),
324 FILTER_QUERY_FUNC2(query_formats),
325 };
326