avconv: factor out initializing stream parameters for encoding
[libav.git] / avconv_filter.c
CommitLineData
fe2147e9
AK
1/*
2 * avconv filter configuration
3 *
4 * This file is part of Libav.
5 *
6 * Libav 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 * Libav 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 Libav; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
8f8bc923
DB
21#include <stdint.h>
22
fe2147e9
AK
23#include "avconv.h"
24
25#include "libavfilter/avfilter.h"
1bf34134 26#include "libavfilter/buffersrc.h"
fe2147e9 27
5c7db097
JR
28#include "libavresample/avresample.h"
29
fe2147e9 30#include "libavutil/avassert.h"
5c7db097 31#include "libavutil/avstring.h"
a903f8f0 32#include "libavutil/channel_layout.h"
16302246 33#include "libavutil/display.h"
5c7db097 34#include "libavutil/opt.h"
fe2147e9
AK
35#include "libavutil/pixdesc.h"
36#include "libavutil/pixfmt.h"
37#include "libavutil/samplefmt.h"
38
c1ef30a6
DB
39/* Define a function for building a string containing a list of
40 * allowed formats. */
bee2d75b 41#define DEF_CHOOSE_FORMAT(type, var, supported_list, none, get_name) \
fe2147e9
AK
42static char *choose_ ## var ## s(OutputStream *ost) \
43{ \
38313626
AK
44 if (ost->enc_ctx->var != none) { \
45 get_name(ost->enc_ctx->var); \
fe2147e9 46 return av_strdup(name); \
e760e1d4 47 } else if (ost->enc && ost->enc->supported_list) { \
fe2147e9
AK
48 const type *p; \
49 AVIOContext *s = NULL; \
50 uint8_t *ret; \
51 int len; \
52 \
53 if (avio_open_dyn_buf(&s) < 0) \
5e3f9979 54 exit(1); \
fe2147e9
AK
55 \
56 for (p = ost->enc->supported_list; *p != none; p++) { \
57 get_name(*p); \
bee2d75b 58 avio_printf(s, "%s|", name); \
fe2147e9
AK
59 } \
60 len = avio_close_dyn_buf(s, &ret); \
61 ret[len - 1] = 0; \
62 return ret; \
63 } else \
64 return NULL; \
65}
66
716d413c 67DEF_CHOOSE_FORMAT(enum AVPixelFormat, pix_fmt, pix_fmts, AV_PIX_FMT_NONE,
bee2d75b 68 GET_PIX_FMT_NAME)
fe2147e9 69
fe2147e9 70DEF_CHOOSE_FORMAT(enum AVSampleFormat, sample_fmt, sample_fmts,
bee2d75b 71 AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME)
fe2147e9 72
fe2147e9 73DEF_CHOOSE_FORMAT(int, sample_rate, supported_samplerates, 0,
bee2d75b 74 GET_SAMPLE_RATE_NAME)
fe2147e9 75
fe2147e9 76DEF_CHOOSE_FORMAT(uint64_t, channel_layout, channel_layouts, 0,
bee2d75b 77 GET_CH_LAYOUT_NAME)
fe2147e9 78
73c6ec6d 79int init_simple_filtergraph(InputStream *ist, OutputStream *ost)
fe2147e9
AK
80{
81 FilterGraph *fg = av_mallocz(sizeof(*fg));
82
83 if (!fg)
5e3f9979 84 exit(1);
fe2147e9
AK
85 fg->index = nb_filtergraphs;
86
10bca661 87 GROW_ARRAY(fg->outputs, fg->nb_outputs);
fe2147e9 88 if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0]))))
5e3f9979 89 exit(1);
fe2147e9
AK
90 fg->outputs[0]->ost = ost;
91 fg->outputs[0]->graph = fg;
92
93 ost->filter = fg->outputs[0];
94
10bca661 95 GROW_ARRAY(fg->inputs, fg->nb_inputs);
fe2147e9 96 if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0]))))
5e3f9979 97 exit(1);
fe2147e9
AK
98 fg->inputs[0]->ist = ist;
99 fg->inputs[0]->graph = fg;
722ec3eb 100 fg->inputs[0]->format = -1;
fe2147e9 101
10bca661 102 GROW_ARRAY(ist->filters, ist->nb_filters);
fe2147e9
AK
103 ist->filters[ist->nb_filters - 1] = fg->inputs[0];
104
10bca661 105 GROW_ARRAY(filtergraphs, nb_filtergraphs);
fe2147e9
AK
106 filtergraphs[nb_filtergraphs - 1] = fg;
107
73c6ec6d 108 return 0;
fe2147e9
AK
109}
110
111static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
112{
113 InputStream *ist = NULL;
114 enum AVMediaType type = avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx);
115 int i;
116
117 // TODO: support other filter types
118 if (type != AVMEDIA_TYPE_VIDEO && type != AVMEDIA_TYPE_AUDIO) {
119 av_log(NULL, AV_LOG_FATAL, "Only video and audio filters supported "
120 "currently.\n");
5e3f9979 121 exit(1);
fe2147e9
AK
122 }
123
124 if (in->name) {
125 AVFormatContext *s;
126 AVStream *st = NULL;
127 char *p;
128 int file_idx = strtol(in->name, &p, 0);
129
130 if (file_idx < 0 || file_idx >= nb_input_files) {
131 av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtegraph description %s.\n",
132 file_idx, fg->graph_desc);
5e3f9979 133 exit(1);
fe2147e9
AK
134 }
135 s = input_files[file_idx]->ctx;
136
137 for (i = 0; i < s->nb_streams; i++) {
15e84ed3 138 if (s->streams[i]->codecpar->codec_type != type)
fe2147e9
AK
139 continue;
140 if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) {
141 st = s->streams[i];
142 break;
143 }
144 }
145 if (!st) {
146 av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
147 "matches no streams.\n", p, fg->graph_desc);
5e3f9979 148 exit(1);
fe2147e9
AK
149 }
150 ist = input_streams[input_files[file_idx]->ist_index + st->index];
151 } else {
152 /* find the first unused stream of corresponding type */
153 for (i = 0; i < nb_input_streams; i++) {
154 ist = input_streams[i];
41776ba9 155 if (ist->dec_ctx->codec_type == type && ist->discard)
fe2147e9
AK
156 break;
157 }
158 if (i == nb_input_streams) {
159 av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for "
d28fc7b2 160 "unlabeled input pad %d on filter %s\n", in->pad_idx,
fe2147e9 161 in->filter_ctx->name);
5e3f9979 162 exit(1);
fe2147e9
AK
163 }
164 }
165 av_assert0(ist);
166
167 ist->discard = 0;
168 ist->decoding_needed = 1;
169 ist->st->discard = AVDISCARD_NONE;
170
10bca661 171 GROW_ARRAY(fg->inputs, fg->nb_inputs);
fe2147e9 172 if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0]))))
5e3f9979 173 exit(1);
fe2147e9
AK
174 fg->inputs[fg->nb_inputs - 1]->ist = ist;
175 fg->inputs[fg->nb_inputs - 1]->graph = fg;
722ec3eb 176 fg->inputs[fg->nb_inputs - 1]->format = -1;
fe2147e9 177
10bca661 178 GROW_ARRAY(ist->filters, ist->nb_filters);
fe2147e9
AK
179 ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
180}
181
6d592fbd
AK
182int init_complex_filtergraph(FilterGraph *fg)
183{
184 AVFilterInOut *inputs, *outputs, *cur;
185 AVFilterGraph *graph;
186 int ret = 0;
187
188 /* this graph is only used for determining the kinds of inputs
189 * and outputs we have, and is discarded on exit from this function */
190 graph = avfilter_graph_alloc();
191 if (!graph)
192 return AVERROR(ENOMEM);
193
194 ret = avfilter_graph_parse2(graph, fg->graph_desc, &inputs, &outputs);
195 if (ret < 0)
196 goto fail;
197
198 for (cur = inputs; cur; cur = cur->next)
199 init_input_filter(fg, cur);
200
201 for (cur = outputs; cur;) {
202 GROW_ARRAY(fg->outputs, fg->nb_outputs);
203 fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]));
204 if (!fg->outputs[fg->nb_outputs - 1])
205 exit(1);
206
207 fg->outputs[fg->nb_outputs - 1]->graph = fg;
208 fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
209 fg->outputs[fg->nb_outputs - 1]->type = avfilter_pad_get_type(cur->filter_ctx->output_pads,
210 cur->pad_idx);
211 cur = cur->next;
212 fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
213 }
214
215fail:
216 avfilter_inout_free(&inputs);
217 avfilter_graph_free(&graph);
218 return ret;
219}
220
811bd078
AK
221static int insert_trim(int64_t start_time, int64_t duration,
222 AVFilterContext **last_filter, int *pad_idx,
223 const char *filter_name)
a83c0da5 224{
a83c0da5
AK
225 AVFilterGraph *graph = (*last_filter)->graph;
226 AVFilterContext *ctx;
227 const AVFilter *trim;
811bd078
AK
228 enum AVMediaType type = avfilter_pad_get_type((*last_filter)->output_pads, *pad_idx);
229 const char *name = (type == AVMEDIA_TYPE_VIDEO) ? "trim" : "atrim";
a83c0da5
AK
230 int ret = 0;
231
811bd078 232 if (duration == INT64_MAX && start_time == AV_NOPTS_VALUE)
a83c0da5
AK
233 return 0;
234
235 trim = avfilter_get_by_name(name);
236 if (!trim) {
237 av_log(NULL, AV_LOG_ERROR, "%s filter not present, cannot limit "
238 "recording time.\n", name);
239 return AVERROR_FILTER_NOT_FOUND;
240 }
241
a83c0da5
AK
242 ctx = avfilter_graph_alloc_filter(graph, trim, filter_name);
243 if (!ctx)
244 return AVERROR(ENOMEM);
245
811bd078
AK
246 if (duration != INT64_MAX) {
247 ret = av_opt_set_double(ctx, "duration", (double)duration / 1e6,
8cd472d3
AK
248 AV_OPT_SEARCH_CHILDREN);
249 }
811bd078
AK
250 if (ret >= 0 && start_time != AV_NOPTS_VALUE) {
251 ret = av_opt_set_double(ctx, "start", (double)start_time / 1e6,
8cd472d3
AK
252 AV_OPT_SEARCH_CHILDREN);
253 }
a83c0da5
AK
254 if (ret < 0) {
255 av_log(ctx, AV_LOG_ERROR, "Error configuring the %s filter", name);
256 return ret;
257 }
258
259 ret = avfilter_init_str(ctx, NULL);
260 if (ret < 0)
261 return ret;
262
263 ret = avfilter_link(*last_filter, *pad_idx, ctx, 0);
264 if (ret < 0)
265 return ret;
266
267 *last_filter = ctx;
268 *pad_idx = 0;
269 return 0;
270}
271
16302246
MS
272static int insert_filter(AVFilterContext **last_filter, int *pad_idx,
273 const char *filter_name, const char *args)
274{
275 AVFilterGraph *graph = (*last_filter)->graph;
276 AVFilterContext *ctx;
277 int ret;
278
279 ret = avfilter_graph_create_filter(&ctx,
280 avfilter_get_by_name(filter_name),
281 filter_name, args, NULL, graph);
282 if (ret < 0)
283 return ret;
284
285 ret = avfilter_link(*last_filter, *pad_idx, ctx, 0);
286 if (ret < 0)
287 return ret;
288
289 *last_filter = ctx;
290 *pad_idx = 0;
291 return 0;
292}
293
fe2147e9
AK
294static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
295{
296 char *pix_fmts;
297 OutputStream *ost = ofilter->ost;
811bd078 298 OutputFile *of = output_files[ost->file_index];
38313626 299 AVCodecContext *codec = ost->enc_ctx;
fe2147e9
AK
300 AVFilterContext *last_filter = out->filter_ctx;
301 int pad_idx = out->pad_idx;
302 int ret;
303 char name[255];
304
305 snprintf(name, sizeof(name), "output stream %d:%d", ost->file_index, ost->index);
306 ret = avfilter_graph_create_filter(&ofilter->filter,
307 avfilter_get_by_name("buffersink"),
58dee6e6 308 name, NULL, NULL, fg->graph);
fe2147e9
AK
309 if (ret < 0)
310 return ret;
311
5d273d3e 312 if (!hw_device_ctx && (codec->width || codec->height)) {
fe2147e9
AK
313 char args[255];
314 AVFilterContext *filter;
315
72fbc968 316 snprintf(args, sizeof(args), "%d:%d:0x%X",
fe2147e9
AK
317 codec->width,
318 codec->height,
319 (unsigned)ost->sws_flags);
320 snprintf(name, sizeof(name), "scaler for output stream %d:%d",
321 ost->file_index, ost->index);
322 if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
323 name, args, NULL, fg->graph)) < 0)
324 return ret;
325 if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
326 return ret;
327
328 last_filter = filter;
329 pad_idx = 0;
330 }
331
332 if ((pix_fmts = choose_pix_fmts(ost))) {
333 AVFilterContext *filter;
334 snprintf(name, sizeof(name), "pixel format for output stream %d:%d",
335 ost->file_index, ost->index);
c802a2e7
VG
336 ret = avfilter_graph_create_filter(&filter,
337 avfilter_get_by_name("format"),
338 "format", pix_fmts, NULL, fg->graph);
339 av_freep(&pix_fmts);
340 if (ret < 0)
fe2147e9
AK
341 return ret;
342 if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
343 return ret;
344
345 last_filter = filter;
346 pad_idx = 0;
fe2147e9
AK
347 }
348
349 if (ost->frame_rate.num) {
350 AVFilterContext *fps;
351 char args[255];
352
353 snprintf(args, sizeof(args), "fps=%d/%d", ost->frame_rate.num,
354 ost->frame_rate.den);
355 snprintf(name, sizeof(name), "fps for output stream %d:%d",
356 ost->file_index, ost->index);
357 ret = avfilter_graph_create_filter(&fps, avfilter_get_by_name("fps"),
358 name, args, NULL, fg->graph);
359 if (ret < 0)
360 return ret;
361
362 ret = avfilter_link(last_filter, pad_idx, fps, 0);
363 if (ret < 0)
364 return ret;
365 last_filter = fps;
366 pad_idx = 0;
367 }
368
811bd078
AK
369 snprintf(name, sizeof(name), "trim for output stream %d:%d",
370 ost->file_index, ost->index);
371 ret = insert_trim(of->start_time, of->recording_time,
372 &last_filter, &pad_idx, name);
a83c0da5
AK
373 if (ret < 0)
374 return ret;
375
376
fe2147e9
AK
377 if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
378 return ret;
379
380 return 0;
381}
382
383static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
384{
385 OutputStream *ost = ofilter->ost;
811bd078 386 OutputFile *of = output_files[ost->file_index];
38313626 387 AVCodecContext *codec = ost->enc_ctx;
fe2147e9
AK
388 AVFilterContext *last_filter = out->filter_ctx;
389 int pad_idx = out->pad_idx;
390 char *sample_fmts, *sample_rates, *channel_layouts;
391 char name[255];
392 int ret;
393
394
395 snprintf(name, sizeof(name), "output stream %d:%d", ost->file_index, ost->index);
396 ret = avfilter_graph_create_filter(&ofilter->filter,
397 avfilter_get_by_name("abuffersink"),
398 name, NULL, NULL, fg->graph);
399 if (ret < 0)
400 return ret;
401
402 if (codec->channels && !codec->channel_layout)
403 codec->channel_layout = av_get_default_channel_layout(codec->channels);
404
405 sample_fmts = choose_sample_fmts(ost);
406 sample_rates = choose_sample_rates(ost);
407 channel_layouts = choose_channel_layouts(ost);
408 if (sample_fmts || sample_rates || channel_layouts) {
409 AVFilterContext *format;
410 char args[256];
411 int len = 0;
412
413 if (sample_fmts)
414 len += snprintf(args + len, sizeof(args) - len, "sample_fmts=%s:",
415 sample_fmts);
416 if (sample_rates)
417 len += snprintf(args + len, sizeof(args) - len, "sample_rates=%s:",
418 sample_rates);
419 if (channel_layouts)
420 len += snprintf(args + len, sizeof(args) - len, "channel_layouts=%s:",
421 channel_layouts);
422 args[len - 1] = 0;
423
424 av_freep(&sample_fmts);
425 av_freep(&sample_rates);
426 av_freep(&channel_layouts);
427
428 snprintf(name, sizeof(name), "audio format for output stream %d:%d",
429 ost->file_index, ost->index);
430 ret = avfilter_graph_create_filter(&format,
431 avfilter_get_by_name("aformat"),
432 name, args, NULL, fg->graph);
433 if (ret < 0)
434 return ret;
435
436 ret = avfilter_link(last_filter, pad_idx, format, 0);
437 if (ret < 0)
438 return ret;
439
440 last_filter = format;
441 pad_idx = 0;
442 }
443
811bd078
AK
444 snprintf(name, sizeof(name), "trim for output stream %d:%d",
445 ost->file_index, ost->index);
446 ret = insert_trim(of->start_time, of->recording_time,
447 &last_filter, &pad_idx, name);
a83c0da5
AK
448 if (ret < 0)
449 return ret;
450
fe2147e9
AK
451 if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
452 return ret;
453
454 return 0;
455}
456
457#define DESCRIBE_FILTER_LINK(f, inout, in) \
458{ \
459 AVFilterContext *ctx = inout->filter_ctx; \
460 AVFilterPad *pads = in ? ctx->input_pads : ctx->output_pads; \
06cd4c5a 461 int nb_pads = in ? ctx->nb_inputs : ctx->nb_outputs; \
fe2147e9
AK
462 AVIOContext *pb; \
463 \
464 if (avio_open_dyn_buf(&pb) < 0) \
5e3f9979 465 exit(1); \
fe2147e9
AK
466 \
467 avio_printf(pb, "%s", ctx->filter->name); \
468 if (nb_pads > 1) \
469 avio_printf(pb, ":%s", avfilter_pad_get_name(pads, inout->pad_idx));\
470 avio_w8(pb, 0); \
471 avio_close_dyn_buf(pb, &f->name); \
472}
473
474int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
475{
476 av_freep(&ofilter->name);
477 DESCRIBE_FILTER_LINK(ofilter, out, 0);
478
479 switch (avfilter_pad_get_type(out->filter_ctx->output_pads, out->pad_idx)) {
480 case AVMEDIA_TYPE_VIDEO: return configure_output_video_filter(fg, ofilter, out);
481 case AVMEDIA_TYPE_AUDIO: return configure_output_audio_filter(fg, ofilter, out);
482 default: av_assert0(0);
483 }
484}
485
486static int configure_input_video_filter(FilterGraph *fg, InputFilter *ifilter,
487 AVFilterInOut *in)
488{
2e661f26 489 AVFilterContext *last_filter;
51fc88e7 490 const AVFilter *buffer_filt = avfilter_get_by_name("buffer");
fe2147e9 491 InputStream *ist = ifilter->ist;
811bd078 492 InputFile *f = input_files[ist->file_index];
fe2147e9
AK
493 AVRational tb = ist->framerate.num ? av_inv_q(ist->framerate) :
494 ist->st->time_base;
1bf34134
AK
495 AVBufferSrcParameters *par;
496 char name[255];
811bd078 497 int ret, pad_idx = 0;
fe2147e9 498
fe2147e9
AK
499 snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index,
500 ist->file_index, ist->st->index);
501
1bf34134
AK
502 ifilter->filter = avfilter_graph_alloc_filter(fg->graph, buffer_filt, name);
503 if (!ifilter->filter)
504 return AVERROR(ENOMEM);
505
506 par = av_buffersrc_parameters_alloc();
507 if (!par)
508 return AVERROR(ENOMEM);
509
722ec3eb
AK
510 par->sample_aspect_ratio = ifilter->sample_aspect_ratio;
511 par->width = ifilter->width;
512 par->height = ifilter->height;
513 par->format = ifilter->format;
1bf34134 514 par->time_base = tb;
722ec3eb 515 par->hw_frames_ctx = ifilter->hw_frames_ctx;
1bf34134
AK
516
517 ret = av_buffersrc_parameters_set(ifilter->filter, par);
518 av_freep(&par);
519 if (ret < 0)
520 return ret;
521
522 ret = avfilter_init_str(ifilter->filter, NULL);
523 if (ret < 0)
fe2147e9 524 return ret;
1bf34134 525
2e661f26 526 last_filter = ifilter->filter;
fe2147e9 527
16302246
MS
528 if (ist->autorotate) {
529 uint8_t* displaymatrix = av_stream_get_side_data(ist->st,
530 AV_PKT_DATA_DISPLAYMATRIX, NULL);
531 if (displaymatrix) {
532 double rot = av_display_rotation_get((int32_t*) displaymatrix);
533 if (rot < -135 || rot > 135) {
534 ret = insert_filter(&last_filter, &pad_idx, "vflip", NULL);
535 if (ret < 0)
536 return ret;
537 ret = insert_filter(&last_filter, &pad_idx, "hflip", NULL);
538 } else if (rot < -45) {
539 ret = insert_filter(&last_filter, &pad_idx, "transpose", "dir=clock");
540 } else if (rot > 45) {
541 ret = insert_filter(&last_filter, &pad_idx, "transpose", "dir=cclock");
542 }
543 if (ret < 0)
544 return ret;
545 }
546 }
547
fe2147e9
AK
548 if (ist->framerate.num) {
549 AVFilterContext *setpts;
550
551 snprintf(name, sizeof(name), "force CFR for input from stream %d:%d",
552 ist->file_index, ist->st->index);
553 if ((ret = avfilter_graph_create_filter(&setpts,
554 avfilter_get_by_name("setpts"),
555 name, "N", NULL,
556 fg->graph)) < 0)
557 return ret;
558
2e661f26 559 if ((ret = avfilter_link(last_filter, 0, setpts, 0)) < 0)
fe2147e9
AK
560 return ret;
561
2e661f26 562 last_filter = setpts;
fe2147e9
AK
563 }
564
811bd078
AK
565 snprintf(name, sizeof(name), "trim for input stream %d:%d",
566 ist->file_index, ist->st->index);
567 ret = insert_trim(((f->start_time == AV_NOPTS_VALUE) || !f->accurate_seek) ?
488a0fa6 568 AV_NOPTS_VALUE : 0, f->recording_time, &last_filter, &pad_idx, name);
811bd078
AK
569 if (ret < 0)
570 return ret;
571
2e661f26 572 if ((ret = avfilter_link(last_filter, 0, in->filter_ctx, in->pad_idx)) < 0)
fe2147e9
AK
573 return ret;
574 return 0;
575}
576
577static int configure_input_audio_filter(FilterGraph *fg, InputFilter *ifilter,
578 AVFilterInOut *in)
579{
2e661f26 580 AVFilterContext *last_filter;
51fc88e7 581 const AVFilter *abuffer_filt = avfilter_get_by_name("abuffer");
fe2147e9 582 InputStream *ist = ifilter->ist;
811bd078 583 InputFile *f = input_files[ist->file_index];
1bf34134 584 AVBufferSrcParameters *par;
fe2147e9 585 char args[255], name[255];
811bd078 586 int ret, pad_idx = 0;
fe2147e9 587
fe2147e9
AK
588 snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index,
589 ist->file_index, ist->st->index);
590
1bf34134
AK
591 ifilter->filter = avfilter_graph_alloc_filter(fg->graph, abuffer_filt, name);
592 if (!ifilter->filter)
593 return AVERROR(ENOMEM);
594
595 par = av_buffersrc_parameters_alloc();
596 if (!par)
597 return AVERROR(ENOMEM);
598
722ec3eb
AK
599 par->time_base = (AVRational){ 1, ifilter->sample_rate };
600 par->sample_rate = ifilter->sample_rate;
601 par->format = ifilter->format;
602 par->channel_layout = ifilter->channel_layout;
1bf34134
AK
603
604 ret = av_buffersrc_parameters_set(ifilter->filter, par);
605 av_freep(&par);
606 if (ret < 0)
607 return ret;
608
609 ret = avfilter_init_str(ifilter->filter, NULL);
610 if (ret < 0)
fe2147e9 611 return ret;
2e661f26 612 last_filter = ifilter->filter;
fe2147e9
AK
613
614 if (audio_sync_method > 0) {
615 AVFilterContext *async;
fe2147e9
AK
616 int len = 0;
617
618 av_log(NULL, AV_LOG_WARNING, "-async has been deprecated. Used the "
619 "asyncts audio filter instead.\n");
620
621 if (audio_sync_method > 1)
622 len += snprintf(args + len, sizeof(args) - len, "compensate=1:"
623 "max_comp=%d:", audio_sync_method);
624 snprintf(args + len, sizeof(args) - len, "min_delta=%f",
625 audio_drift_threshold);
626
627 snprintf(name, sizeof(name), "graph %d audio sync for input stream %d:%d",
628 fg->index, ist->file_index, ist->st->index);
629 ret = avfilter_graph_create_filter(&async,
630 avfilter_get_by_name("asyncts"),
631 name, args, NULL, fg->graph);
632 if (ret < 0)
633 return ret;
634
2e661f26 635 ret = avfilter_link(last_filter, 0, async, 0);
fe2147e9
AK
636 if (ret < 0)
637 return ret;
638
2e661f26 639 last_filter = async;
fe2147e9 640 }
9a71d362
JR
641 if (audio_volume != 256) {
642 AVFilterContext *volume;
643
644 av_log(NULL, AV_LOG_WARNING, "-vol has been deprecated. Use the volume "
645 "audio filter instead.\n");
646
647 snprintf(args, sizeof(args), "volume=%f", audio_volume / 256.0);
648
649 snprintf(name, sizeof(name), "graph %d volume for input stream %d:%d",
650 fg->index, ist->file_index, ist->st->index);
651 ret = avfilter_graph_create_filter(&volume,
652 avfilter_get_by_name("volume"),
653 name, args, NULL, fg->graph);
654 if (ret < 0)
655 return ret;
656
2e661f26 657 ret = avfilter_link(last_filter, 0, volume, 0);
9a71d362
JR
658 if (ret < 0)
659 return ret;
660
2e661f26 661 last_filter = volume;
9a71d362 662 }
811bd078
AK
663
664 snprintf(name, sizeof(name), "trim for input stream %d:%d",
665 ist->file_index, ist->st->index);
666 ret = insert_trim(((f->start_time == AV_NOPTS_VALUE) || !f->accurate_seek) ?
488a0fa6 667 AV_NOPTS_VALUE : 0, f->recording_time, &last_filter, &pad_idx, name);
811bd078
AK
668 if (ret < 0)
669 return ret;
670
2e661f26 671 if ((ret = avfilter_link(last_filter, 0, in->filter_ctx, in->pad_idx)) < 0)
fe2147e9
AK
672 return ret;
673
674 return 0;
675}
676
677static int configure_input_filter(FilterGraph *fg, InputFilter *ifilter,
678 AVFilterInOut *in)
679{
680 av_freep(&ifilter->name);
681 DESCRIBE_FILTER_LINK(ifilter, in, 1);
682
683 switch (avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx)) {
684 case AVMEDIA_TYPE_VIDEO: return configure_input_video_filter(fg, ifilter, in);
685 case AVMEDIA_TYPE_AUDIO: return configure_input_audio_filter(fg, ifilter, in);
686 default: av_assert0(0);
687 }
688}
689
690int configure_filtergraph(FilterGraph *fg)
691{
692 AVFilterInOut *inputs, *outputs, *cur;
49670e42 693 int ret, i, simple = filtergraph_is_simple(fg);
fe2147e9
AK
694 const char *graph_desc = simple ? fg->outputs[0]->ost->avfilter :
695 fg->graph_desc;
696
697 avfilter_graph_free(&fg->graph);
698 if (!(fg->graph = avfilter_graph_alloc()))
699 return AVERROR(ENOMEM);
700
701 if (simple) {
702 OutputStream *ost = fg->outputs[0]->ost;
5c7db097
JR
703 char args[512];
704 AVDictionaryEntry *e = NULL;
5c7db097 705
fe2147e9
AK
706 snprintf(args, sizeof(args), "flags=0x%X", (unsigned)ost->sws_flags);
707 fg->graph->scale_sws_opts = av_strdup(args);
5c7db097
JR
708
709 args[0] = '\0';
710 while ((e = av_dict_get(fg->outputs[0]->ost->resample_opts, "", e,
711 AV_DICT_IGNORE_SUFFIX))) {
712 av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value);
713 }
714 if (strlen(args))
715 args[strlen(args) - 1] = '\0';
716 fg->graph->resample_lavr_opts = av_strdup(args);
fe2147e9
AK
717 }
718
719 if ((ret = avfilter_graph_parse2(fg->graph, graph_desc, &inputs, &outputs)) < 0)
720 return ret;
721
5d273d3e
MT
722 if (hw_device_ctx) {
723 for (i = 0; i < fg->graph->nb_filters; i++) {
724 fg->graph->filters[i]->hw_device_ctx = av_buffer_ref(hw_device_ctx);
725 }
726 }
727
fe2147e9
AK
728 if (simple && (!inputs || inputs->next || !outputs || outputs->next)) {
729 av_log(NULL, AV_LOG_ERROR, "Simple filtergraph '%s' does not have "
730 "exactly one input and output.\n", graph_desc);
731 return AVERROR(EINVAL);
732 }
733
fe2147e9
AK
734 for (cur = inputs, i = 0; cur; cur = cur->next, i++)
735 if ((ret = configure_input_filter(fg, fg->inputs[i], cur)) < 0)
736 return ret;
737 avfilter_inout_free(&inputs);
738
8b830ee9
LB
739 for (cur = outputs, i = 0; cur; cur = cur->next, i++) {
740 OutputFilter *ofilter = fg->outputs[i];
741 if (ofilter->ost)
742 configure_output_filter(fg, ofilter, cur);
743 }
744
6d592fbd 745 avfilter_inout_free(&outputs);
fe2147e9 746
6d592fbd
AK
747 if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
748 return ret;
fe2147e9
AK
749
750 return 0;
751}
752
722ec3eb
AK
753int ifilter_parameters_from_frame(InputFilter *ifilter, const AVFrame *frame)
754{
755 av_buffer_unref(&ifilter->hw_frames_ctx);
756
757 ifilter->format = frame->format;
758
759 ifilter->width = frame->width;
760 ifilter->height = frame->height;
761 ifilter->sample_aspect_ratio = frame->sample_aspect_ratio;
762
763 ifilter->sample_rate = frame->sample_rate;
764 ifilter->channel_layout = frame->channel_layout;
765
766 if (frame->hw_frames_ctx) {
767 ifilter->hw_frames_ctx = av_buffer_ref(frame->hw_frames_ctx);
768 if (!ifilter->hw_frames_ctx)
769 return AVERROR(ENOMEM);
770 }
771
772 return 0;
773}
774
775int ifilter_parameters_from_decoder(InputFilter *ifilter, const AVCodecContext *avctx)
776{
777 av_buffer_unref(&ifilter->hw_frames_ctx);
778
779 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO)
780 ifilter->format = avctx->pix_fmt;
781 else
782 ifilter->format = avctx->sample_fmt;
783
784 ifilter->width = avctx->width;
785 ifilter->height = avctx->height;
786 ifilter->sample_aspect_ratio = avctx->sample_aspect_ratio;
787
788 ifilter->sample_rate = avctx->sample_rate;
789 ifilter->channel_layout = avctx->channel_layout;
790
791 if (avctx->hw_frames_ctx) {
792 ifilter->hw_frames_ctx = av_buffer_ref(avctx->hw_frames_ctx);
793 if (!ifilter->hw_frames_ctx)
794 return AVERROR(ENOMEM);
795 }
796
797 return 0;
798}
799
fe2147e9
AK
800int ist_in_filtergraph(FilterGraph *fg, InputStream *ist)
801{
802 int i;
803 for (i = 0; i < fg->nb_inputs; i++)
804 if (fg->inputs[i]->ist == ist)
805 return 1;
806 return 0;
807}
808
49670e42
AK
809int filtergraph_is_simple(FilterGraph *fg)
810{
811 return !fg->graph_desc;
812}