FFmpeg coverage

Directory: ../../../ffmpeg/
File: src/libavfilter/vf_framepack.c
Date: 2024-11-20 23:03:26
Exec Total Coverage
Lines: 175 224 78.1%
Functions: 7 7 100.0%
Branches: 72 123 58.5%
Line Branch Exec Source
1 /*
2 * Copyright (c) 2013 Vittorio Giovara
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 /**
22 * @file
23 * Generate a frame packed video, by combining two views in a single surface.
24 */
25
26 #include <string.h>
27
28 #include "libavutil/common.h"
29 #include "libavutil/imgutils.h"
30 #include "libavutil/opt.h"
31 #include "libavutil/pixdesc.h"
32 #include "libavutil/rational.h"
33 #include "libavutil/stereo3d.h"
34
35 #include "avfilter.h"
36 #include "filters.h"
37 #include "video.h"
38
39 #define LEFT 0
40 #define RIGHT 1
41
42 typedef struct FramepackContext {
43 const AVClass *class;
44
45 int depth;
46 const AVPixFmtDescriptor *pix_desc; ///< agreed pixel format
47
48 enum AVStereo3DType format; ///< frame pack type output
49
50 AVFrame *input_views[2]; ///< input frames
51 } FramepackContext;
52
53 static const enum AVPixelFormat formats_supported[] = {
54 AV_PIX_FMT_GRAY8, AV_PIX_FMT_GRAY9,
55 AV_PIX_FMT_GRAY10, AV_PIX_FMT_GRAY12, AV_PIX_FMT_GRAY14,
56 AV_PIX_FMT_GRAY16,
57 AV_PIX_FMT_YUV410P, AV_PIX_FMT_YUV411P,
58 AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P,
59 AV_PIX_FMT_YUV440P, AV_PIX_FMT_YUV444P,
60 AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P,
61 AV_PIX_FMT_YUVJ440P, AV_PIX_FMT_YUVJ444P,
62 AV_PIX_FMT_YUVJ411P,
63 AV_PIX_FMT_YUV420P9, AV_PIX_FMT_YUV422P9, AV_PIX_FMT_YUV444P9,
64 AV_PIX_FMT_YUV420P10, AV_PIX_FMT_YUV422P10, AV_PIX_FMT_YUV444P10,
65 AV_PIX_FMT_YUV440P10,
66 AV_PIX_FMT_YUV444P12, AV_PIX_FMT_YUV422P12, AV_PIX_FMT_YUV420P12,
67 AV_PIX_FMT_YUV440P12,
68 AV_PIX_FMT_YUV444P14, AV_PIX_FMT_YUV422P14, AV_PIX_FMT_YUV420P14,
69 AV_PIX_FMT_YUV420P16, AV_PIX_FMT_YUV422P16, AV_PIX_FMT_YUV444P16,
70 AV_PIX_FMT_GBRP, AV_PIX_FMT_GBRP9, AV_PIX_FMT_GBRP10,
71 AV_PIX_FMT_GBRP12, AV_PIX_FMT_GBRP14, AV_PIX_FMT_GBRP16,
72 AV_PIX_FMT_YUVA420P, AV_PIX_FMT_YUVA422P, AV_PIX_FMT_YUVA444P,
73 AV_PIX_FMT_YUVA444P9, AV_PIX_FMT_YUVA444P10, AV_PIX_FMT_YUVA444P12, AV_PIX_FMT_YUVA444P16,
74 AV_PIX_FMT_YUVA422P9, AV_PIX_FMT_YUVA422P10, AV_PIX_FMT_YUVA422P12, AV_PIX_FMT_YUVA422P16,
75 AV_PIX_FMT_YUVA420P9, AV_PIX_FMT_YUVA420P10, AV_PIX_FMT_YUVA420P16,
76 AV_PIX_FMT_GBRAP, AV_PIX_FMT_GBRAP10, AV_PIX_FMT_GBRAP12, AV_PIX_FMT_GBRAP16,
77 AV_PIX_FMT_NONE
78 };
79
80 10 static av_cold void framepack_uninit(AVFilterContext *ctx)
81 {
82 10 FramepackContext *s = ctx->priv;
83
84 // clean any leftover frame
85 10 av_frame_free(&s->input_views[LEFT]);
86 10 av_frame_free(&s->input_views[RIGHT]);
87 10 }
88
89 5 static int config_output(AVFilterLink *outlink)
90 {
91 5 AVFilterContext *ctx = outlink->src;
92 5 FramepackContext *s = outlink->src->priv;
93 5 FilterLink *leftl = ff_filter_link(ctx->inputs[LEFT]);
94 5 FilterLink *rightl = ff_filter_link(ctx->inputs[RIGHT]);
95 5 FilterLink *ol = ff_filter_link(outlink);
96
97 5 int width = ctx->inputs[LEFT]->w;
98 5 int height = ctx->inputs[LEFT]->h;
99 5 AVRational time_base = ctx->inputs[LEFT]->time_base;
100 5 AVRational frame_rate = leftl->frame_rate;
101
102 // check size and fps match on the other input
103
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 5 if (width != ctx->inputs[RIGHT]->w ||
104
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 5 height != ctx->inputs[RIGHT]->h) {
105 ✗ av_log(ctx, AV_LOG_ERROR,
106 "Left and right sizes differ (%dx%d vs %dx%d).\n",
107 width, height,
108 ✗ ctx->inputs[RIGHT]->w, ctx->inputs[RIGHT]->h);
109 ✗ return AVERROR_INVALIDDATA;
110
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 5 } else if (av_cmp_q(time_base, ctx->inputs[RIGHT]->time_base) != 0) {
111 ✗ av_log(ctx, AV_LOG_ERROR,
112 "Left and right time bases differ (%d/%d vs %d/%d).\n",
113 time_base.num, time_base.den,
114 ✗ ctx->inputs[RIGHT]->time_base.num,
115 ✗ ctx->inputs[RIGHT]->time_base.den);
116 ✗ return AVERROR_INVALIDDATA;
117
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 5 } else if (av_cmp_q(frame_rate, rightl->frame_rate) != 0) {
118 ✗ av_log(ctx, AV_LOG_ERROR,
119 "Left and right framerates differ (%d/%d vs %d/%d).\n",
120 frame_rate.num, frame_rate.den,
121 rightl->frame_rate.num,
122 rightl->frame_rate.den);
123 ✗ return AVERROR_INVALIDDATA;
124 }
125
126 5 s->pix_desc = av_pix_fmt_desc_get(outlink->format);
127
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 5 if (!s->pix_desc)
128 ✗ return AVERROR_BUG;
129 5 s->depth = s->pix_desc->comp[0].depth;
130
131 // modify output properties as needed
132
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 5 switch (s->format) {
133 1 case AV_STEREO3D_FRAMESEQUENCE:
134 1 time_base.den *= 2;
135 1 frame_rate.num *= 2;
136 1 break;
137 2 case AV_STEREO3D_COLUMNS:
138 case AV_STEREO3D_SIDEBYSIDE:
139 2 width *= 2;
140 2 break;
141 2 case AV_STEREO3D_LINES:
142 case AV_STEREO3D_TOPBOTTOM:
143 2 height *= 2;
144 2 break;
145 ✗ default:
146 ✗ av_log(ctx, AV_LOG_ERROR, "Unknown packing mode.\n");
147 ✗ return AVERROR_INVALIDDATA;
148 }
149
150 5 outlink->w = width;
151 5 outlink->h = height;
152 5 outlink->time_base = time_base;
153 5 ol->frame_rate = frame_rate;
154
155 5 return 0;
156 }
157
158 30 static void horizontal_frame_pack(AVFilterLink *outlink,
159 AVFrame *out,
160 int interleaved)
161 {
162 30 AVFilterContext *ctx = outlink->src;
163 30 FramepackContext *s = ctx->priv;
164 int i, plane;
165
166
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 45 if (interleaved && s->depth <= 8) {
167 15 const uint8_t *leftp = s->input_views[LEFT]->data[0];
168 15 const uint8_t *rightp = s->input_views[RIGHT]->data[0];
169 15 uint8_t *dstp = out->data[0];
170 15 int length = out->width / 2;
171 15 int lines = out->height;
172
173
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 60 for (plane = 0; plane < s->pix_desc->nb_components; plane++) {
174
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 45 if (plane == 1 || plane == 2) {
175 30 length = AV_CEIL_RSHIFT(out->width / 2, s->pix_desc->log2_chroma_w);
176 30 lines = AV_CEIL_RSHIFT(out->height, s->pix_desc->log2_chroma_h);
177 }
178
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 8685 for (i = 0; i < lines; i++) {
179 int j;
180 8640 leftp = s->input_views[LEFT]->data[plane] +
181 8640 s->input_views[LEFT]->linesize[plane] * i;
182 8640 rightp = s->input_views[RIGHT]->data[plane] +
183 8640 s->input_views[RIGHT]->linesize[plane] * i;
184 8640 dstp = out->data[plane] + out->linesize[plane] * i;
185
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 2289600 for (j = 0; j < length; j++) {
186 // interpolate chroma as necessary
187
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 2280960 if ((s->pix_desc->log2_chroma_w ||
188
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 2280960 s->pix_desc->log2_chroma_h) &&
189
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 1900800 (plane == 1 || plane == 2)) {
190 760320 *dstp++ = (*leftp + *rightp) / 2;
191 760320 *dstp++ = (*leftp + *rightp) / 2;
192 } else {
193 1520640 *dstp++ = *leftp;
194 1520640 *dstp++ = *rightp;
195 }
196 2280960 leftp += 1;
197 2280960 rightp += 1;
198 }
199 }
200 }
201
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 15 } else if (interleaved && s->depth > 8) {
202 ✗ const uint16_t *leftp = (const uint16_t *)s->input_views[LEFT]->data[0];
203 ✗ const uint16_t *rightp = (const uint16_t *)s->input_views[RIGHT]->data[0];
204 ✗ uint16_t *dstp = (uint16_t *)out->data[0];
205 ✗ int length = out->width / 2;
206 ✗ int lines = out->height;
207
208 ✗ for (plane = 0; plane < s->pix_desc->nb_components; plane++) {
209 ✗ if (plane == 1 || plane == 2) {
210 ✗ length = AV_CEIL_RSHIFT(out->width / 2, s->pix_desc->log2_chroma_w);
211 ✗ lines = AV_CEIL_RSHIFT(out->height, s->pix_desc->log2_chroma_h);
212 }
213 ✗ for (i = 0; i < lines; i++) {
214 int j;
215 ✗ leftp = (const uint16_t *)s->input_views[LEFT]->data[plane] +
216 ✗ s->input_views[LEFT]->linesize[plane] * i / 2;
217 ✗ rightp = (const uint16_t *)s->input_views[RIGHT]->data[plane] +
218 ✗ s->input_views[RIGHT]->linesize[plane] * i / 2;
219 ✗ dstp = (uint16_t *)out->data[plane] + out->linesize[plane] * i / 2;
220 ✗ for (j = 0; j < length; j++) {
221 // interpolate chroma as necessary
222 ✗ if ((s->pix_desc->log2_chroma_w ||
223 ✗ s->pix_desc->log2_chroma_h) &&
224 ✗ (plane == 1 || plane == 2)) {
225 ✗ *dstp++ = (*leftp + *rightp) / 2;
226 ✗ *dstp++ = (*leftp + *rightp) / 2;
227 } else {
228 ✗ *dstp++ = *leftp;
229 ✗ *dstp++ = *rightp;
230 }
231 ✗ leftp += 1;
232 ✗ rightp += 1;
233 }
234 }
235 }
236 } else {
237
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 45 for (i = 0; i < 2; i++) {
238 30 const AVFrame *const input_view = s->input_views[i];
239
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 30 const int psize = 1 + (s->depth > 8);
240 uint8_t *dst[4];
241 30 int sub_w = psize * input_view->width >> s->pix_desc->log2_chroma_w;
242
243 30 dst[0] = out->data[0] + i * input_view->width * psize;
244 30 dst[1] = out->data[1] + i * sub_w;
245 30 dst[2] = out->data[2] + i * sub_w;
246
247 30 av_image_copy2(dst, out->linesize,
248 30 input_view->data, input_view->linesize,
249 30 input_view->format,
250 30 input_view->width,
251 30 input_view->height);
252 }
253 }
254 30 }
255
256 30 static void vertical_frame_pack(AVFilterLink *outlink,
257 AVFrame *out,
258 int interleaved)
259 {
260 30 AVFilterContext *ctx = outlink->src;
261 30 FramepackContext *s = ctx->priv;
262 int i;
263
264
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 90 for (i = 0; i < 2; i++) {
265 60 const AVFrame *const input_view = s->input_views[i];
266 uint8_t *dst[4];
267 int linesizes[4];
268 60 int sub_h = input_view->height >> s->pix_desc->log2_chroma_h;
269
270 60 dst[0] = out->data[0] + i * out->linesize[0] *
271 60 (interleaved + input_view->height * (1 - interleaved));
272 60 dst[1] = out->data[1] + i * out->linesize[1] *
273 60 (interleaved + sub_h * (1 - interleaved));
274 60 dst[2] = out->data[2] + i * out->linesize[2] *
275 60 (interleaved + sub_h * (1 - interleaved));
276
277 60 linesizes[0] = out->linesize[0] +
278 60 interleaved * out->linesize[0];
279 60 linesizes[1] = out->linesize[1] +
280 60 interleaved * out->linesize[1];
281 60 linesizes[2] = out->linesize[2] +
282 60 interleaved * out->linesize[2];
283
284 60 av_image_copy2(dst, linesizes,
285 60 input_view->data, input_view->linesize,
286 60 input_view->format,
287 60 input_view->width,
288 60 input_view->height);
289 }
290 30 }
291
292 60 static av_always_inline void spatial_frame_pack(AVFilterLink *outlink,
293 AVFrame *dst)
294 {
295 60 AVFilterContext *ctx = outlink->src;
296 60 FramepackContext *s = ctx->priv;
297
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 60 switch (s->format) {
298 15 case AV_STEREO3D_SIDEBYSIDE:
299 15 horizontal_frame_pack(outlink, dst, 0);
300 15 break;
301 15 case AV_STEREO3D_COLUMNS:
302 15 horizontal_frame_pack(outlink, dst, 1);
303 15 break;
304 15 case AV_STEREO3D_TOPBOTTOM:
305 15 vertical_frame_pack(outlink, dst, 0);
306 15 break;
307 15 case AV_STEREO3D_LINES:
308 15 vertical_frame_pack(outlink, dst, 1);
309 15 break;
310 }
311 60 }
312
313 68 static int try_push_frame(AVFilterContext *ctx)
314 {
315 68 FramepackContext *s = ctx->priv;
316 68 AVFilterLink *outlink = ctx->outputs[0];
317 68 FilterLink *l = ff_filter_link(outlink);
318 AVStereo3D *stereo;
319 int ret, i;
320
321
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 68 if (!(s->input_views[0] && s->input_views[1]))
322 ✗ return 0;
323
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 68 if (s->format == AV_STEREO3D_FRAMESEQUENCE) {
324 8 int64_t pts = s->input_views[0]->pts;
325
326
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 24 for (i = 0; i < 2; i++) {
327 // set correct timestamps
328
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 16 if (pts != AV_NOPTS_VALUE) {
329
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 16 s->input_views[i]->pts = i == 0 ? pts * 2 : pts * 2 + av_rescale_q(1, av_inv_q(l->frame_rate), outlink->time_base);
330 16 s->input_views[i]->duration = av_rescale_q(1, av_inv_q(l->frame_rate), outlink->time_base);
331 }
332
333 // set stereo3d side data
334 16 stereo = av_stereo3d_create_side_data(s->input_views[i]);
335
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 16 if (!stereo)
336 ✗ return AVERROR(ENOMEM);
337 16 stereo->type = s->format;
338 16 stereo->view = i == LEFT ? AV_STEREO3D_VIEW_LEFT
339
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 16 : AV_STEREO3D_VIEW_RIGHT;
340
341 // filter the frame and immediately relinquish its pointer
342 16 ret = ff_filter_frame(outlink, s->input_views[i]);
343 16 s->input_views[i] = NULL;
344
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 16 if (ret < 0)
345 ✗ return ret;
346 }
347 8 return ret;
348 } else {
349 60 AVFrame *dst = ff_get_video_buffer(outlink, outlink->w, outlink->h);
350
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 60 if (!dst)
351 ✗ return AVERROR(ENOMEM);
352
353 60 spatial_frame_pack(outlink, dst);
354
355 // get any property from the original frame
356 60 ret = av_frame_copy_props(dst, s->input_views[LEFT]);
357
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 60 if (ret < 0) {
358 ✗ av_frame_free(&dst);
359 ✗ return ret;
360 }
361
362
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 180 for (i = 0; i < 2; i++)
363 120 av_frame_free(&s->input_views[i]);
364
365 // set stereo3d side data
366 60 stereo = av_stereo3d_create_side_data(dst);
367
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 60 if (!stereo) {
368 ✗ av_frame_free(&dst);
369 ✗ return AVERROR(ENOMEM);
370 }
371 60 stereo->type = s->format;
372
373 60 return ff_filter_frame(outlink, dst);
374 }
375 }
376
377 188 static int activate(AVFilterContext *ctx)
378 {
379 188 AVFilterLink *outlink = ctx->outputs[0];
380 188 FramepackContext *s = ctx->priv;
381 int ret;
382
383
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 188 FF_FILTER_FORWARD_STATUS_BACK_ALL(outlink, ctx);
384
385
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 188 if (!s->input_views[0]) {
386 123 ret = ff_inlink_consume_frame(ctx->inputs[0], &s->input_views[0]);
387
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 123 if (ret < 0)
388 ✗ return ret;
389 }
390
391
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 188 if (!s->input_views[1]) {
392 138 ret = ff_inlink_consume_frame(ctx->inputs[1], &s->input_views[1]);
393
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 138 if (ret < 0)
394 ✗ return ret;
395 }
396
397
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 188 if (s->input_views[0] && s->input_views[1])
398 68 return try_push_frame(ctx);
399
400
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 120 FF_FILTER_FORWARD_STATUS(ctx->inputs[0], outlink);
401
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 120 FF_FILTER_FORWARD_STATUS(ctx->inputs[1], outlink);
402
403
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 120 if (ff_outlink_frame_wanted(ctx->outputs[0]) &&
404
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 120 !s->input_views[0]) {
405 55 ff_inlink_request_frame(ctx->inputs[0]);
406 55 return 0;
407 }
408
409
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 65 if (ff_outlink_frame_wanted(ctx->outputs[0]) &&
410
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 65 !s->input_views[1]) {
411 65 ff_inlink_request_frame(ctx->inputs[1]);
412 65 return 0;
413 }
414
415 ✗ return FFERROR_NOT_READY;
416 }
417
418 #define OFFSET(x) offsetof(FramepackContext, x)
419 #define VF AV_OPT_FLAG_VIDEO_PARAM | AV_OPT_FLAG_FILTERING_PARAM
420 static const AVOption framepack_options[] = {
421 { "format", "Frame pack output format", OFFSET(format), AV_OPT_TYPE_INT,
422 { .i64 = AV_STEREO3D_SIDEBYSIDE }, 0, INT_MAX, .flags = VF, .unit = "format" },
423 { "sbs", "Views are packed next to each other", 0, AV_OPT_TYPE_CONST,
424 { .i64 = AV_STEREO3D_SIDEBYSIDE }, INT_MIN, INT_MAX, .flags = VF, .unit = "format" },
425 { "tab", "Views are packed on top of each other", 0, AV_OPT_TYPE_CONST,
426 { .i64 = AV_STEREO3D_TOPBOTTOM }, INT_MIN, INT_MAX, .flags = VF, .unit = "format" },
427 { "frameseq", "Views are one after the other", 0, AV_OPT_TYPE_CONST,
428 { .i64 = AV_STEREO3D_FRAMESEQUENCE }, INT_MIN, INT_MAX, .flags = VF, .unit = "format" },
429 { "lines", "Views are interleaved by lines", 0, AV_OPT_TYPE_CONST,
430 { .i64 = AV_STEREO3D_LINES }, INT_MIN, INT_MAX, .flags = VF, .unit = "format" },
431 { "columns", "Views are interleaved by columns", 0, AV_OPT_TYPE_CONST,
432 { .i64 = AV_STEREO3D_COLUMNS }, INT_MIN, INT_MAX, .flags = VF, .unit = "format" },
433 { NULL },
434 };
435
436 AVFILTER_DEFINE_CLASS(framepack);
437
438 static const AVFilterPad framepack_inputs[] = {
439 {
440 .name = "left",
441 .type = AVMEDIA_TYPE_VIDEO,
442 },
443 {
444 .name = "right",
445 .type = AVMEDIA_TYPE_VIDEO,
446 },
447 };
448
449 static const AVFilterPad framepack_outputs[] = {
450 {
451 .name = "packed",
452 .type = AVMEDIA_TYPE_VIDEO,
453 .config_props = config_output,
454 },
455 };
456
457 const AVFilter ff_vf_framepack = {
458 .name = "framepack",
459 .description = NULL_IF_CONFIG_SMALL("Generate a frame packed stereoscopic video."),
460 .priv_size = sizeof(FramepackContext),
461 .priv_class = &framepack_class,
462 FILTER_INPUTS(framepack_inputs),
463 FILTER_OUTPUTS(framepack_outputs),
464 FILTER_PIXFMTS_ARRAY(formats_supported),
465 .activate = activate,
466 .uninit = framepack_uninit,
467 };
468