1 /*
2 * ffmpeg filter configuration
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 <stdint.h>
22
23 #include "ffmpeg.h"
24
25 #include "libavfilter/avfilter.h"
26 #include "libavfilter/buffersink.h"
27 #include "libavfilter/buffersrc.h"
28
29 #include "libavresample/avresample.h"
30
31 #include "libavutil/avassert.h"
32 #include "libavutil/avstring.h"
33 #include "libavutil/bprint.h"
34 #include "libavutil/channel_layout.h"
35 #include "libavutil/display.h"
36 #include "libavutil/opt.h"
37 #include "libavutil/pixdesc.h"
38 #include "libavutil/pixfmt.h"
39 #include "libavutil/imgutils.h"
40 #include "libavutil/samplefmt.h"
41
get_compliance_unofficial_pix_fmts(enum AVCodecID codec_id,const enum AVPixelFormat default_formats[])42 static const enum AVPixelFormat *get_compliance_unofficial_pix_fmts(enum AVCodecID codec_id, const enum AVPixelFormat default_formats[])
43 {
44 static const enum AVPixelFormat mjpeg_formats[] =
45 { AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ422P, AV_PIX_FMT_YUVJ444P,
46 AV_PIX_FMT_YUV420P, AV_PIX_FMT_YUV422P, AV_PIX_FMT_YUV444P,
47 AV_PIX_FMT_NONE };
48 static const enum AVPixelFormat ljpeg_formats[] =
49 { AV_PIX_FMT_BGR24 , AV_PIX_FMT_BGRA , AV_PIX_FMT_BGR0,
50 AV_PIX_FMT_YUVJ420P, AV_PIX_FMT_YUVJ444P, AV_PIX_FMT_YUVJ422P,
51 AV_PIX_FMT_YUV420P , AV_PIX_FMT_YUV444P , AV_PIX_FMT_YUV422P,
52 AV_PIX_FMT_NONE};
53
54 if (codec_id == AV_CODEC_ID_MJPEG) {
55 return mjpeg_formats;
56 } else if (codec_id == AV_CODEC_ID_LJPEG) {
57 return ljpeg_formats;
58 } else {
59 return default_formats;
60 }
61 }
62
choose_pixel_fmt(AVStream * st,AVCodecContext * enc_ctx,const AVCodec * codec,enum AVPixelFormat target)63 static enum AVPixelFormat choose_pixel_fmt(AVStream *st, AVCodecContext *enc_ctx,
64 const AVCodec *codec, enum AVPixelFormat target)
65 {
66 if (codec && codec->pix_fmts) {
67 const enum AVPixelFormat *p = codec->pix_fmts;
68 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(target);
69 //FIXME: This should check for AV_PIX_FMT_FLAG_ALPHA after PAL8 pixel format without alpha is implemented
70 int has_alpha = desc ? desc->nb_components % 2 == 0 : 0;
71 enum AVPixelFormat best= AV_PIX_FMT_NONE;
72
73 if (enc_ctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
74 p = get_compliance_unofficial_pix_fmts(enc_ctx->codec_id, p);
75 }
76 for (; *p != AV_PIX_FMT_NONE; p++) {
77 best = av_find_best_pix_fmt_of_2(best, *p, target, has_alpha, NULL);
78 if (*p == target)
79 break;
80 }
81 if (*p == AV_PIX_FMT_NONE) {
82 if (target != AV_PIX_FMT_NONE)
83 av_log(NULL, AV_LOG_WARNING,
84 "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
85 av_get_pix_fmt_name(target),
86 codec->name,
87 av_get_pix_fmt_name(best));
88 return best;
89 }
90 }
91 return target;
92 }
93
choose_pix_fmts(OutputFilter * ofilter)94 static char *choose_pix_fmts(OutputFilter *ofilter)
95 {
96 OutputStream *ost = ofilter->ost;
97 AVDictionaryEntry *strict_dict = av_dict_get(ost->encoder_opts, "strict", NULL, 0);
98 if (strict_dict)
99 // used by choose_pixel_fmt() and below
100 av_opt_set(ost->enc_ctx, "strict", strict_dict->value, 0);
101
102 if (ost->keep_pix_fmt) {
103 avfilter_graph_set_auto_convert(ofilter->graph->graph,
104 AVFILTER_AUTO_CONVERT_NONE);
105 if (ost->enc_ctx->pix_fmt == AV_PIX_FMT_NONE)
106 return NULL;
107 return av_strdup(av_get_pix_fmt_name(ost->enc_ctx->pix_fmt));
108 }
109 if (ost->enc_ctx->pix_fmt != AV_PIX_FMT_NONE) {
110 return av_strdup(av_get_pix_fmt_name(choose_pixel_fmt(ost->st, ost->enc_ctx, ost->enc, ost->enc_ctx->pix_fmt)));
111 } else if (ost->enc && ost->enc->pix_fmts) {
112 const enum AVPixelFormat *p;
113 AVIOContext *s = NULL;
114 uint8_t *ret;
115 int len;
116
117 if (avio_open_dyn_buf(&s) < 0)
118 exit_program(1);
119
120 p = ost->enc->pix_fmts;
121 if (ost->enc_ctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
122 p = get_compliance_unofficial_pix_fmts(ost->enc_ctx->codec_id, p);
123 }
124
125 for (; *p != AV_PIX_FMT_NONE; p++) {
126 const char *name = av_get_pix_fmt_name(*p);
127 avio_printf(s, "%s|", name);
128 }
129 len = avio_close_dyn_buf(s, &ret);
130 ret[len - 1] = 0;
131 return ret;
132 } else
133 return NULL;
134 }
135
136 /* Define a function for building a string containing a list of
137 * allowed formats. */
138 #define DEF_CHOOSE_FORMAT(suffix, type, var, supported_list, none, get_name) \
139 static char *choose_ ## suffix (OutputFilter *ofilter) \
140 { \
141 if (ofilter->var != none) { \
142 get_name(ofilter->var); \
143 return av_strdup(name); \
144 } else if (ofilter->supported_list) { \
145 const type *p; \
146 AVIOContext *s = NULL; \
147 uint8_t *ret; \
148 int len; \
149 \
150 if (avio_open_dyn_buf(&s) < 0) \
151 exit_program(1); \
152 \
153 for (p = ofilter->supported_list; *p != none; p++) { \
154 get_name(*p); \
155 avio_printf(s, "%s|", name); \
156 } \
157 len = avio_close_dyn_buf(s, &ret); \
158 ret[len - 1] = 0; \
159 return ret; \
160 } else \
161 return NULL; \
162 }
163
164 //DEF_CHOOSE_FORMAT(pix_fmts, enum AVPixelFormat, format, formats, AV_PIX_FMT_NONE,
165 // GET_PIX_FMT_NAME)
166
DEF_CHOOSE_FORMAT(sample_fmts,enum AVSampleFormat,format,formats,AV_SAMPLE_FMT_NONE,GET_SAMPLE_FMT_NAME)167 DEF_CHOOSE_FORMAT(sample_fmts, enum AVSampleFormat, format, formats,
168 AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME)
169
170 DEF_CHOOSE_FORMAT(sample_rates, int, sample_rate, sample_rates, 0,
171 GET_SAMPLE_RATE_NAME)
172
173 DEF_CHOOSE_FORMAT(channel_layouts, uint64_t, channel_layout, channel_layouts, 0,
174 GET_CH_LAYOUT_NAME)
175
176 int init_simple_filtergraph(InputStream *ist, OutputStream *ost)
177 {
178 FilterGraph *fg = av_mallocz(sizeof(*fg));
179
180 if (!fg)
181 exit_program(1);
182 fg->index = nb_filtergraphs;
183
184 GROW_ARRAY(fg->outputs, fg->nb_outputs);
185 if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0]))))
186 exit_program(1);
187 fg->outputs[0]->ost = ost;
188 fg->outputs[0]->graph = fg;
189 fg->outputs[0]->format = -1;
190
191 ost->filter = fg->outputs[0];
192
193 GROW_ARRAY(fg->inputs, fg->nb_inputs);
194 if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0]))))
195 exit_program(1);
196 fg->inputs[0]->ist = ist;
197 fg->inputs[0]->graph = fg;
198 fg->inputs[0]->format = -1;
199
200 fg->inputs[0]->frame_queue = av_fifo_alloc(8 * sizeof(AVFrame*));
201 if (!fg->inputs[0]->frame_queue)
202 exit_program(1);
203
204 GROW_ARRAY(ist->filters, ist->nb_filters);
205 ist->filters[ist->nb_filters - 1] = fg->inputs[0];
206
207 GROW_ARRAY(filtergraphs, nb_filtergraphs);
208 filtergraphs[nb_filtergraphs - 1] = fg;
209
210 return 0;
211 }
212
describe_filter_link(FilterGraph * fg,AVFilterInOut * inout,int in)213 static char *describe_filter_link(FilterGraph *fg, AVFilterInOut *inout, int in)
214 {
215 AVFilterContext *ctx = inout->filter_ctx;
216 AVFilterPad *pads = in ? ctx->input_pads : ctx->output_pads;
217 int nb_pads = in ? ctx->nb_inputs : ctx->nb_outputs;
218 AVIOContext *pb;
219 uint8_t *res = NULL;
220
221 if (avio_open_dyn_buf(&pb) < 0)
222 exit_program(1);
223
224 avio_printf(pb, "%s", ctx->filter->name);
225 if (nb_pads > 1)
226 avio_printf(pb, ":%s", avfilter_pad_get_name(pads, inout->pad_idx));
227 avio_w8(pb, 0);
228 avio_close_dyn_buf(pb, &res);
229 return res;
230 }
231
init_input_filter(FilterGraph * fg,AVFilterInOut * in)232 static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
233 {
234 InputStream *ist = NULL;
235 enum AVMediaType type = avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx);
236 int i;
237
238 // TODO: support other filter types
239 if (type != AVMEDIA_TYPE_VIDEO && type != AVMEDIA_TYPE_AUDIO) {
240 av_log(NULL, AV_LOG_FATAL, "Only video and audio filters supported "
241 "currently.\n");
242 exit_program(1);
243 }
244
245 if (in->name) {
246 AVFormatContext *s;
247 AVStream *st = NULL;
248 char *p;
249 int file_idx = strtol(in->name, &p, 0);
250
251 if (file_idx < 0 || file_idx >= nb_input_files) {
252 av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtergraph description %s.\n",
253 file_idx, fg->graph_desc);
254 exit_program(1);
255 }
256 s = input_files[file_idx]->ctx;
257
258 for (i = 0; i < s->nb_streams; i++) {
259 enum AVMediaType stream_type = s->streams[i]->codecpar->codec_type;
260 if (stream_type != type &&
261 !(stream_type == AVMEDIA_TYPE_SUBTITLE &&
262 type == AVMEDIA_TYPE_VIDEO /* sub2video hack */))
263 continue;
264 if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) {
265 st = s->streams[i];
266 break;
267 }
268 }
269 if (!st) {
270 av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
271 "matches no streams.\n", p, fg->graph_desc);
272 exit_program(1);
273 }
274 ist = input_streams[input_files[file_idx]->ist_index + st->index];
275 if (ist->user_set_discard == AVDISCARD_ALL) {
276 av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
277 "matches a disabled input stream.\n", p, fg->graph_desc);
278 exit_program(1);
279 }
280 } else {
281 /* find the first unused stream of corresponding type */
282 for (i = 0; i < nb_input_streams; i++) {
283 ist = input_streams[i];
284 if (ist->user_set_discard == AVDISCARD_ALL)
285 continue;
286 if (ist->dec_ctx->codec_type == type && ist->discard)
287 break;
288 }
289 if (i == nb_input_streams) {
290 av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for "
291 "unlabeled input pad %d on filter %s\n", in->pad_idx,
292 in->filter_ctx->name);
293 exit_program(1);
294 }
295 }
296 av_assert0(ist);
297
298 ist->discard = 0;
299 ist->decoding_needed |= DECODING_FOR_FILTER;
300 ist->st->discard = AVDISCARD_NONE;
301
302 GROW_ARRAY(fg->inputs, fg->nb_inputs);
303 if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0]))))
304 exit_program(1);
305 fg->inputs[fg->nb_inputs - 1]->ist = ist;
306 fg->inputs[fg->nb_inputs - 1]->graph = fg;
307 fg->inputs[fg->nb_inputs - 1]->format = -1;
308 fg->inputs[fg->nb_inputs - 1]->type = ist->st->codecpar->codec_type;
309 fg->inputs[fg->nb_inputs - 1]->name = describe_filter_link(fg, in, 1);
310
311 fg->inputs[fg->nb_inputs - 1]->frame_queue = av_fifo_alloc(8 * sizeof(AVFrame*));
312 if (!fg->inputs[fg->nb_inputs - 1]->frame_queue)
313 exit_program(1);
314
315 GROW_ARRAY(ist->filters, ist->nb_filters);
316 ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
317 }
318
init_complex_filtergraph(FilterGraph * fg)319 int init_complex_filtergraph(FilterGraph *fg)
320 {
321 AVFilterInOut *inputs, *outputs, *cur;
322 AVFilterGraph *graph;
323 int ret = 0;
324
325 /* this graph is only used for determining the kinds of inputs
326 * and outputs we have, and is discarded on exit from this function */
327 graph = avfilter_graph_alloc();
328 if (!graph)
329 return AVERROR(ENOMEM);
330 graph->nb_threads = 1;
331
332 ret = avfilter_graph_parse2(graph, fg->graph_desc, &inputs, &outputs);
333 if (ret < 0)
334 goto fail;
335
336 for (cur = inputs; cur; cur = cur->next)
337 init_input_filter(fg, cur);
338
339 for (cur = outputs; cur;) {
340 GROW_ARRAY(fg->outputs, fg->nb_outputs);
341 fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]));
342 if (!fg->outputs[fg->nb_outputs - 1])
343 exit_program(1);
344
345 fg->outputs[fg->nb_outputs - 1]->graph = fg;
346 fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
347 fg->outputs[fg->nb_outputs - 1]->type = avfilter_pad_get_type(cur->filter_ctx->output_pads,
348 cur->pad_idx);
349 fg->outputs[fg->nb_outputs - 1]->name = describe_filter_link(fg, cur, 0);
350 cur = cur->next;
351 fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
352 }
353
354 fail:
355 avfilter_inout_free(&inputs);
356 avfilter_graph_free(&graph);
357 return ret;
358 }
359
insert_trim(int64_t start_time,int64_t duration,AVFilterContext ** last_filter,int * pad_idx,const char * filter_name)360 static int insert_trim(int64_t start_time, int64_t duration,
361 AVFilterContext **last_filter, int *pad_idx,
362 const char *filter_name)
363 {
364 AVFilterGraph *graph = (*last_filter)->graph;
365 AVFilterContext *ctx;
366 const AVFilter *trim;
367 enum AVMediaType type = avfilter_pad_get_type((*last_filter)->output_pads, *pad_idx);
368 const char *name = (type == AVMEDIA_TYPE_VIDEO) ? "trim" : "atrim";
369 int ret = 0;
370
371 if (duration == INT64_MAX && start_time == AV_NOPTS_VALUE)
372 return 0;
373
374 trim = avfilter_get_by_name(name);
375 if (!trim) {
376 av_log(NULL, AV_LOG_ERROR, "%s filter not present, cannot limit "
377 "recording time.\n", name);
378 return AVERROR_FILTER_NOT_FOUND;
379 }
380
381 ctx = avfilter_graph_alloc_filter(graph, trim, filter_name);
382 if (!ctx)
383 return AVERROR(ENOMEM);
384
385 if (duration != INT64_MAX) {
386 ret = av_opt_set_int(ctx, "durationi", duration,
387 AV_OPT_SEARCH_CHILDREN);
388 }
389 if (ret >= 0 && start_time != AV_NOPTS_VALUE) {
390 ret = av_opt_set_int(ctx, "starti", start_time,
391 AV_OPT_SEARCH_CHILDREN);
392 }
393 if (ret < 0) {
394 av_log(ctx, AV_LOG_ERROR, "Error configuring the %s filter", name);
395 return ret;
396 }
397
398 ret = avfilter_init_str(ctx, NULL);
399 if (ret < 0)
400 return ret;
401
402 ret = avfilter_link(*last_filter, *pad_idx, ctx, 0);
403 if (ret < 0)
404 return ret;
405
406 *last_filter = ctx;
407 *pad_idx = 0;
408 return 0;
409 }
410
insert_filter(AVFilterContext ** last_filter,int * pad_idx,const char * filter_name,const char * args)411 static int insert_filter(AVFilterContext **last_filter, int *pad_idx,
412 const char *filter_name, const char *args)
413 {
414 AVFilterGraph *graph = (*last_filter)->graph;
415 AVFilterContext *ctx;
416 int ret;
417
418 ret = avfilter_graph_create_filter(&ctx,
419 avfilter_get_by_name(filter_name),
420 filter_name, args, NULL, graph);
421 if (ret < 0)
422 return ret;
423
424 ret = avfilter_link(*last_filter, *pad_idx, ctx, 0);
425 if (ret < 0)
426 return ret;
427
428 *last_filter = ctx;
429 *pad_idx = 0;
430 return 0;
431 }
432
configure_output_video_filter(FilterGraph * fg,OutputFilter * ofilter,AVFilterInOut * out)433 static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
434 {
435 char *pix_fmts;
436 OutputStream *ost = ofilter->ost;
437 OutputFile *of = output_files[ost->file_index];
438 AVFilterContext *last_filter = out->filter_ctx;
439 int pad_idx = out->pad_idx;
440 int ret;
441 char name[255];
442
443 snprintf(name, sizeof(name), "out_%d_%d", ost->file_index, ost->index);
444 ret = avfilter_graph_create_filter(&ofilter->filter,
445 avfilter_get_by_name("buffersink"),
446 name, NULL, NULL, fg->graph);
447
448 if (ret < 0)
449 return ret;
450
451 if ((ofilter->width || ofilter->height) && ofilter->ost->autoscale) {
452 char args[255];
453 AVFilterContext *filter;
454 AVDictionaryEntry *e = NULL;
455
456 snprintf(args, sizeof(args), "%d:%d",
457 ofilter->width, ofilter->height);
458
459 while ((e = av_dict_get(ost->sws_dict, "", e,
460 AV_DICT_IGNORE_SUFFIX))) {
461 av_strlcatf(args, sizeof(args), ":%s=%s", e->key, e->value);
462 }
463
464 snprintf(name, sizeof(name), "scaler_out_%d_%d",
465 ost->file_index, ost->index);
466 if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
467 name, args, NULL, fg->graph)) < 0)
468 return ret;
469 if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
470 return ret;
471
472 last_filter = filter;
473 pad_idx = 0;
474 }
475
476 if ((pix_fmts = choose_pix_fmts(ofilter))) {
477 AVFilterContext *filter;
478 snprintf(name, sizeof(name), "format_out_%d_%d",
479 ost->file_index, ost->index);
480 ret = avfilter_graph_create_filter(&filter,
481 avfilter_get_by_name("format"),
482 "format", pix_fmts, NULL, fg->graph);
483 av_freep(&pix_fmts);
484 if (ret < 0)
485 return ret;
486 if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
487 return ret;
488
489 last_filter = filter;
490 pad_idx = 0;
491 }
492
493 if (ost->frame_rate.num && 0) {
494 AVFilterContext *fps;
495 char args[255];
496
497 snprintf(args, sizeof(args), "fps=%d/%d", ost->frame_rate.num,
498 ost->frame_rate.den);
499 snprintf(name, sizeof(name), "fps_out_%d_%d",
500 ost->file_index, ost->index);
501 ret = avfilter_graph_create_filter(&fps, avfilter_get_by_name("fps"),
502 name, args, NULL, fg->graph);
503 if (ret < 0)
504 return ret;
505
506 ret = avfilter_link(last_filter, pad_idx, fps, 0);
507 if (ret < 0)
508 return ret;
509 last_filter = fps;
510 pad_idx = 0;
511 }
512
513 snprintf(name, sizeof(name), "trim_out_%d_%d",
514 ost->file_index, ost->index);
515 ret = insert_trim(of->start_time, of->recording_time,
516 &last_filter, &pad_idx, name);
517 if (ret < 0)
518 return ret;
519
520
521 if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
522 return ret;
523
524 return 0;
525 }
526
configure_output_audio_filter(FilterGraph * fg,OutputFilter * ofilter,AVFilterInOut * out)527 static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
528 {
529 OutputStream *ost = ofilter->ost;
530 OutputFile *of = output_files[ost->file_index];
531 AVCodecContext *codec = ost->enc_ctx;
532 AVFilterContext *last_filter = out->filter_ctx;
533 int pad_idx = out->pad_idx;
534 char *sample_fmts, *sample_rates, *channel_layouts;
535 char name[255];
536 int ret;
537
538 snprintf(name, sizeof(name), "out_%d_%d", ost->file_index, ost->index);
539 ret = avfilter_graph_create_filter(&ofilter->filter,
540 avfilter_get_by_name("abuffersink"),
541 name, NULL, NULL, fg->graph);
542 if (ret < 0)
543 return ret;
544 if ((ret = av_opt_set_int(ofilter->filter, "all_channel_counts", 1, AV_OPT_SEARCH_CHILDREN)) < 0)
545 return ret;
546
547 #define AUTO_INSERT_FILTER(opt_name, filter_name, arg) do { \
548 AVFilterContext *filt_ctx; \
549 \
550 av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi " \
551 "similarly to -af " filter_name "=%s.\n", arg); \
552 \
553 ret = avfilter_graph_create_filter(&filt_ctx, \
554 avfilter_get_by_name(filter_name), \
555 filter_name, arg, NULL, fg->graph); \
556 if (ret < 0) \
557 return ret; \
558 \
559 ret = avfilter_link(last_filter, pad_idx, filt_ctx, 0); \
560 if (ret < 0) \
561 return ret; \
562 \
563 last_filter = filt_ctx; \
564 pad_idx = 0; \
565 } while (0)
566 if (ost->audio_channels_mapped) {
567 int i;
568 AVBPrint pan_buf;
569 av_bprint_init(&pan_buf, 256, 8192);
570 av_bprintf(&pan_buf, "0x%"PRIx64,
571 av_get_default_channel_layout(ost->audio_channels_mapped));
572 for (i = 0; i < ost->audio_channels_mapped; i++)
573 if (ost->audio_channels_map[i] != -1)
574 av_bprintf(&pan_buf, "|c%d=c%d", i, ost->audio_channels_map[i]);
575
576 AUTO_INSERT_FILTER("-map_channel", "pan", pan_buf.str);
577 av_bprint_finalize(&pan_buf, NULL);
578 }
579
580 if (codec->channels && !codec->channel_layout)
581 codec->channel_layout = av_get_default_channel_layout(codec->channels);
582
583 sample_fmts = choose_sample_fmts(ofilter);
584 sample_rates = choose_sample_rates(ofilter);
585 channel_layouts = choose_channel_layouts(ofilter);
586 if (sample_fmts || sample_rates || channel_layouts) {
587 AVFilterContext *format;
588 char args[256];
589 args[0] = 0;
590
591 if (sample_fmts)
592 av_strlcatf(args, sizeof(args), "sample_fmts=%s:",
593 sample_fmts);
594 if (sample_rates)
595 av_strlcatf(args, sizeof(args), "sample_rates=%s:",
596 sample_rates);
597 if (channel_layouts)
598 av_strlcatf(args, sizeof(args), "channel_layouts=%s:",
599 channel_layouts);
600
601 av_freep(&sample_fmts);
602 av_freep(&sample_rates);
603 av_freep(&channel_layouts);
604
605 snprintf(name, sizeof(name), "format_out_%d_%d",
606 ost->file_index, ost->index);
607 ret = avfilter_graph_create_filter(&format,
608 avfilter_get_by_name("aformat"),
609 name, args, NULL, fg->graph);
610 if (ret < 0)
611 return ret;
612
613 ret = avfilter_link(last_filter, pad_idx, format, 0);
614 if (ret < 0)
615 return ret;
616
617 last_filter = format;
618 pad_idx = 0;
619 }
620
621 if (ost->apad && of->shortest) {
622 char args[256];
623 int i;
624
625 for (i=0; i<of->ctx->nb_streams; i++)
626 if (of->ctx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
627 break;
628
629 if (i<of->ctx->nb_streams) {
630 snprintf(args, sizeof(args), "%s", ost->apad);
631 AUTO_INSERT_FILTER("-apad", "apad", args);
632 }
633 }
634
635 snprintf(name, sizeof(name), "trim for output stream %d:%d",
636 ost->file_index, ost->index);
637 ret = insert_trim(of->start_time, of->recording_time,
638 &last_filter, &pad_idx, name);
639 if (ret < 0)
640 return ret;
641
642 if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
643 return ret;
644
645 return 0;
646 }
647
configure_output_filter(FilterGraph * fg,OutputFilter * ofilter,AVFilterInOut * out)648 static int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter,
649 AVFilterInOut *out)
650 {
651 if (!ofilter->ost) {
652 av_log(NULL, AV_LOG_FATAL, "Filter %s has an unconnected output\n", ofilter->name);
653 exit_program(1);
654 }
655
656 switch (avfilter_pad_get_type(out->filter_ctx->output_pads, out->pad_idx)) {
657 case AVMEDIA_TYPE_VIDEO: return configure_output_video_filter(fg, ofilter, out);
658 case AVMEDIA_TYPE_AUDIO: return configure_output_audio_filter(fg, ofilter, out);
659 default: av_assert0(0);
660 }
661 }
662
check_filter_outputs(void)663 void check_filter_outputs(void)
664 {
665 int i;
666 for (i = 0; i < nb_filtergraphs; i++) {
667 int n;
668 for (n = 0; n < filtergraphs[i]->nb_outputs; n++) {
669 OutputFilter *output = filtergraphs[i]->outputs[n];
670 if (!output->ost) {
671 av_log(NULL, AV_LOG_FATAL, "Filter %s has an unconnected output\n", output->name);
672 exit_program(1);
673 }
674 }
675 }
676 }
677
sub2video_prepare(InputStream * ist,InputFilter * ifilter)678 static int sub2video_prepare(InputStream *ist, InputFilter *ifilter)
679 {
680 AVFormatContext *avf = input_files[ist->file_index]->ctx;
681 int i, w, h;
682
683 /* Compute the size of the canvas for the subtitles stream.
684 If the subtitles codecpar has set a size, use it. Otherwise use the
685 maximum dimensions of the video streams in the same file. */
686 w = ifilter->width;
687 h = ifilter->height;
688 if (!(w && h)) {
689 for (i = 0; i < avf->nb_streams; i++) {
690 if (avf->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
691 w = FFMAX(w, avf->streams[i]->codecpar->width);
692 h = FFMAX(h, avf->streams[i]->codecpar->height);
693 }
694 }
695 if (!(w && h)) {
696 w = FFMAX(w, 720);
697 h = FFMAX(h, 576);
698 }
699 av_log(avf, AV_LOG_INFO, "sub2video: using %dx%d canvas\n", w, h);
700 }
701 ist->sub2video.w = ifilter->width = w;
702 ist->sub2video.h = ifilter->height = h;
703
704 ifilter->width = ist->dec_ctx->width ? ist->dec_ctx->width : ist->sub2video.w;
705 ifilter->height = ist->dec_ctx->height ? ist->dec_ctx->height : ist->sub2video.h;
706
707 /* rectangles are AV_PIX_FMT_PAL8, but we have no guarantee that the
708 palettes for all rectangles are identical or compatible */
709 ifilter->format = AV_PIX_FMT_RGB32;
710
711 ist->sub2video.frame = av_frame_alloc();
712 if (!ist->sub2video.frame)
713 return AVERROR(ENOMEM);
714 ist->sub2video.last_pts = INT64_MIN;
715 ist->sub2video.end_pts = INT64_MIN;
716
717 /* sub2video structure has been (re-)initialized.
718 Mark it as such so that the system will be
719 initialized with the first received heartbeat. */
720 ist->sub2video.initialize = 1;
721
722 return 0;
723 }
724
configure_input_video_filter(FilterGraph * fg,InputFilter * ifilter,AVFilterInOut * in)725 static int configure_input_video_filter(FilterGraph *fg, InputFilter *ifilter,
726 AVFilterInOut *in)
727 {
728 AVFilterContext *last_filter;
729 const AVFilter *buffer_filt = avfilter_get_by_name("buffer");
730 InputStream *ist = ifilter->ist;
731 InputFile *f = input_files[ist->file_index];
732 AVRational tb = ist->framerate.num ? av_inv_q(ist->framerate) :
733 ist->st->time_base;
734 AVRational fr = ist->framerate;
735 AVRational sar;
736 AVBPrint args;
737 char name[255];
738 int ret, pad_idx = 0;
739 int64_t tsoffset = 0;
740 AVBufferSrcParameters *par = av_buffersrc_parameters_alloc();
741
742 if (!par)
743 return AVERROR(ENOMEM);
744 memset(par, 0, sizeof(*par));
745 par->format = AV_PIX_FMT_NONE;
746
747 if (ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) {
748 av_log(NULL, AV_LOG_ERROR, "Cannot connect video filter to audio input\n");
749 ret = AVERROR(EINVAL);
750 goto fail;
751 }
752
753 if (!fr.num)
754 fr = av_guess_frame_rate(input_files[ist->file_index]->ctx, ist->st, NULL);
755
756 if (ist->dec_ctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
757 ret = sub2video_prepare(ist, ifilter);
758 if (ret < 0)
759 goto fail;
760 }
761
762 sar = ifilter->sample_aspect_ratio;
763 if(!sar.den)
764 sar = (AVRational){0,1};
765 av_bprint_init(&args, 0, AV_BPRINT_SIZE_AUTOMATIC);
766 av_bprintf(&args,
767 "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:"
768 "pixel_aspect=%d/%d",
769 ifilter->width, ifilter->height, ifilter->format,
770 tb.num, tb.den, sar.num, sar.den);
771 if (fr.num && fr.den)
772 av_bprintf(&args, ":frame_rate=%d/%d", fr.num, fr.den);
773 snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index,
774 ist->file_index, ist->st->index);
775
776
777 if ((ret = avfilter_graph_create_filter(&ifilter->filter, buffer_filt, name,
778 args.str, NULL, fg->graph)) < 0)
779 goto fail;
780 par->hw_frames_ctx = ifilter->hw_frames_ctx;
781 ret = av_buffersrc_parameters_set(ifilter->filter, par);
782 if (ret < 0)
783 goto fail;
784 av_freep(&par);
785 last_filter = ifilter->filter;
786
787 if (ist->autorotate) {
788 double theta = get_rotation(ist->st);
789
790 if (fabs(theta - 90) < 1.0) {
791 ret = insert_filter(&last_filter, &pad_idx, "transpose", "clock");
792 } else if (fabs(theta - 180) < 1.0) {
793 ret = insert_filter(&last_filter, &pad_idx, "hflip", NULL);
794 if (ret < 0)
795 return ret;
796 ret = insert_filter(&last_filter, &pad_idx, "vflip", NULL);
797 } else if (fabs(theta - 270) < 1.0) {
798 ret = insert_filter(&last_filter, &pad_idx, "transpose", "cclock");
799 } else if (fabs(theta) > 1.0) {
800 char rotate_buf[64];
801 snprintf(rotate_buf, sizeof(rotate_buf), "%f*PI/180", theta);
802 ret = insert_filter(&last_filter, &pad_idx, "rotate", rotate_buf);
803 }
804 if (ret < 0)
805 return ret;
806 }
807
808 if (do_deinterlace) {
809 AVFilterContext *yadif;
810
811 snprintf(name, sizeof(name), "deinterlace_in_%d_%d",
812 ist->file_index, ist->st->index);
813 if ((ret = avfilter_graph_create_filter(&yadif,
814 avfilter_get_by_name("yadif"),
815 name, "", NULL,
816 fg->graph)) < 0)
817 return ret;
818
819 if ((ret = avfilter_link(last_filter, 0, yadif, 0)) < 0)
820 return ret;
821
822 last_filter = yadif;
823 }
824
825 snprintf(name, sizeof(name), "trim_in_%d_%d",
826 ist->file_index, ist->st->index);
827 if (copy_ts) {
828 tsoffset = f->start_time == AV_NOPTS_VALUE ? 0 : f->start_time;
829 if (!start_at_zero && f->ctx->start_time != AV_NOPTS_VALUE)
830 tsoffset += f->ctx->start_time;
831 }
832 ret = insert_trim(((f->start_time == AV_NOPTS_VALUE) || !f->accurate_seek) ?
833 AV_NOPTS_VALUE : tsoffset, f->recording_time,
834 &last_filter, &pad_idx, name);
835 if (ret < 0)
836 return ret;
837
838 if ((ret = avfilter_link(last_filter, 0, in->filter_ctx, in->pad_idx)) < 0)
839 return ret;
840 return 0;
841 fail:
842 av_freep(&par);
843
844 return ret;
845 }
846
configure_input_audio_filter(FilterGraph * fg,InputFilter * ifilter,AVFilterInOut * in)847 static int configure_input_audio_filter(FilterGraph *fg, InputFilter *ifilter,
848 AVFilterInOut *in)
849 {
850 AVFilterContext *last_filter;
851 const AVFilter *abuffer_filt = avfilter_get_by_name("abuffer");
852 InputStream *ist = ifilter->ist;
853 InputFile *f = input_files[ist->file_index];
854 AVBPrint args;
855 char name[255];
856 int ret, pad_idx = 0;
857 int64_t tsoffset = 0;
858
859 if (ist->dec_ctx->codec_type != AVMEDIA_TYPE_AUDIO) {
860 av_log(NULL, AV_LOG_ERROR, "Cannot connect audio filter to non audio input\n");
861 return AVERROR(EINVAL);
862 }
863
864 av_bprint_init(&args, 0, AV_BPRINT_SIZE_AUTOMATIC);
865 av_bprintf(&args, "time_base=%d/%d:sample_rate=%d:sample_fmt=%s",
866 1, ifilter->sample_rate,
867 ifilter->sample_rate,
868 av_get_sample_fmt_name(ifilter->format));
869 if (ifilter->channel_layout)
870 av_bprintf(&args, ":channel_layout=0x%"PRIx64,
871 ifilter->channel_layout);
872 else
873 av_bprintf(&args, ":channels=%d", ifilter->channels);
874 snprintf(name, sizeof(name), "graph_%d_in_%d_%d", fg->index,
875 ist->file_index, ist->st->index);
876
877 if ((ret = avfilter_graph_create_filter(&ifilter->filter, abuffer_filt,
878 name, args.str, NULL,
879 fg->graph)) < 0)
880 return ret;
881 last_filter = ifilter->filter;
882
883 #define AUTO_INSERT_FILTER_INPUT(opt_name, filter_name, arg) do { \
884 AVFilterContext *filt_ctx; \
885 \
886 av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi " \
887 "similarly to -af " filter_name "=%s.\n", arg); \
888 \
889 snprintf(name, sizeof(name), "graph_%d_%s_in_%d_%d", \
890 fg->index, filter_name, ist->file_index, ist->st->index); \
891 ret = avfilter_graph_create_filter(&filt_ctx, \
892 avfilter_get_by_name(filter_name), \
893 name, arg, NULL, fg->graph); \
894 if (ret < 0) \
895 return ret; \
896 \
897 ret = avfilter_link(last_filter, 0, filt_ctx, 0); \
898 if (ret < 0) \
899 return ret; \
900 \
901 last_filter = filt_ctx; \
902 } while (0)
903
904 if (audio_sync_method > 0) {
905 char args[256] = {0};
906
907 av_strlcatf(args, sizeof(args), "async=%d", audio_sync_method);
908 if (audio_drift_threshold != 0.1)
909 av_strlcatf(args, sizeof(args), ":min_hard_comp=%f", audio_drift_threshold);
910 if (!fg->reconfiguration)
911 av_strlcatf(args, sizeof(args), ":first_pts=0");
912 AUTO_INSERT_FILTER_INPUT("-async", "aresample", args);
913 }
914
915 // if (ost->audio_channels_mapped) {
916 // int i;
917 // AVBPrint pan_buf;
918 // av_bprint_init(&pan_buf, 256, 8192);
919 // av_bprintf(&pan_buf, "0x%"PRIx64,
920 // av_get_default_channel_layout(ost->audio_channels_mapped));
921 // for (i = 0; i < ost->audio_channels_mapped; i++)
922 // if (ost->audio_channels_map[i] != -1)
923 // av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
924 // AUTO_INSERT_FILTER_INPUT("-map_channel", "pan", pan_buf.str);
925 // av_bprint_finalize(&pan_buf, NULL);
926 // }
927
928 if (audio_volume != 256) {
929 char args[256];
930
931 av_log(NULL, AV_LOG_WARNING, "-vol has been deprecated. Use the volume "
932 "audio filter instead.\n");
933
934 snprintf(args, sizeof(args), "%f", audio_volume / 256.);
935 AUTO_INSERT_FILTER_INPUT("-vol", "volume", args);
936 }
937
938 snprintf(name, sizeof(name), "trim for input stream %d:%d",
939 ist->file_index, ist->st->index);
940 if (copy_ts) {
941 tsoffset = f->start_time == AV_NOPTS_VALUE ? 0 : f->start_time;
942 if (!start_at_zero && f->ctx->start_time != AV_NOPTS_VALUE)
943 tsoffset += f->ctx->start_time;
944 }
945 ret = insert_trim(((f->start_time == AV_NOPTS_VALUE) || !f->accurate_seek) ?
946 AV_NOPTS_VALUE : tsoffset, f->recording_time,
947 &last_filter, &pad_idx, name);
948 if (ret < 0)
949 return ret;
950
951 if ((ret = avfilter_link(last_filter, 0, in->filter_ctx, in->pad_idx)) < 0)
952 return ret;
953
954 return 0;
955 }
956
configure_input_filter(FilterGraph * fg,InputFilter * ifilter,AVFilterInOut * in)957 static int configure_input_filter(FilterGraph *fg, InputFilter *ifilter,
958 AVFilterInOut *in)
959 {
960 if (!ifilter->ist->dec) {
961 av_log(NULL, AV_LOG_ERROR,
962 "No decoder for stream #%d:%d, filtering impossible\n",
963 ifilter->ist->file_index, ifilter->ist->st->index);
964 return AVERROR_DECODER_NOT_FOUND;
965 }
966 switch (avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx)) {
967 case AVMEDIA_TYPE_VIDEO: return configure_input_video_filter(fg, ifilter, in);
968 case AVMEDIA_TYPE_AUDIO: return configure_input_audio_filter(fg, ifilter, in);
969 default: av_assert0(0);
970 }
971 }
972
cleanup_filtergraph(FilterGraph * fg)973 static void cleanup_filtergraph(FilterGraph *fg)
974 {
975 int i;
976 for (i = 0; i < fg->nb_outputs; i++)
977 fg->outputs[i]->filter = (AVFilterContext *)NULL;
978 for (i = 0; i < fg->nb_inputs; i++)
979 fg->inputs[i]->filter = (AVFilterContext *)NULL;
980 avfilter_graph_free(&fg->graph);
981 }
982
configure_filtergraph(FilterGraph * fg)983 int configure_filtergraph(FilterGraph *fg)
984 {
985 AVFilterInOut *inputs, *outputs, *cur;
986 int ret, i, simple = filtergraph_is_simple(fg);
987 const char *graph_desc = simple ? fg->outputs[0]->ost->avfilter :
988 fg->graph_desc;
989
990 cleanup_filtergraph(fg);
991 if (!(fg->graph = avfilter_graph_alloc()))
992 return AVERROR(ENOMEM);
993
994 if (simple) {
995 OutputStream *ost = fg->outputs[0]->ost;
996 char args[512];
997 AVDictionaryEntry *e = NULL;
998
999 fg->graph->nb_threads = filter_nbthreads;
1000
1001 args[0] = 0;
1002 while ((e = av_dict_get(ost->sws_dict, "", e,
1003 AV_DICT_IGNORE_SUFFIX))) {
1004 av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value);
1005 }
1006 if (strlen(args))
1007 args[strlen(args)-1] = 0;
1008 fg->graph->scale_sws_opts = av_strdup(args);
1009
1010 args[0] = 0;
1011 while ((e = av_dict_get(ost->swr_opts, "", e,
1012 AV_DICT_IGNORE_SUFFIX))) {
1013 av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value);
1014 }
1015 if (strlen(args))
1016 args[strlen(args)-1] = 0;
1017 av_opt_set(fg->graph, "aresample_swr_opts", args, 0);
1018
1019 args[0] = '\0';
1020 while ((e = av_dict_get(fg->outputs[0]->ost->resample_opts, "", e,
1021 AV_DICT_IGNORE_SUFFIX))) {
1022 av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value);
1023 }
1024 if (strlen(args))
1025 args[strlen(args) - 1] = '\0';
1026
1027 e = av_dict_get(ost->encoder_opts, "threads", NULL, 0);
1028 if (e)
1029 av_opt_set(fg->graph, "threads", e->value, 0);
1030 } else {
1031 fg->graph->nb_threads = filter_complex_nbthreads;
1032 }
1033
1034 if ((ret = avfilter_graph_parse2(fg->graph, graph_desc, &inputs, &outputs)) < 0)
1035 goto fail;
1036
1037 ret = hw_device_setup_for_filter(fg);
1038 if (ret < 0)
1039 goto fail;
1040
1041 if (simple && (!inputs || inputs->next || !outputs || outputs->next)) {
1042 const char *num_inputs;
1043 const char *num_outputs;
1044 if (!outputs) {
1045 num_outputs = "0";
1046 } else if (outputs->next) {
1047 num_outputs = ">1";
1048 } else {
1049 num_outputs = "1";
1050 }
1051 if (!inputs) {
1052 num_inputs = "0";
1053 } else if (inputs->next) {
1054 num_inputs = ">1";
1055 } else {
1056 num_inputs = "1";
1057 }
1058 av_log(NULL, AV_LOG_ERROR, "Simple filtergraph '%s' was expected "
1059 "to have exactly 1 input and 1 output."
1060 " However, it had %s input(s) and %s output(s)."
1061 " Please adjust, or use a complex filtergraph (-filter_complex) instead.\n",
1062 graph_desc, num_inputs, num_outputs);
1063 ret = AVERROR(EINVAL);
1064 goto fail;
1065 }
1066
1067 for (cur = inputs, i = 0; cur; cur = cur->next, i++)
1068 if ((ret = configure_input_filter(fg, fg->inputs[i], cur)) < 0) {
1069 avfilter_inout_free(&inputs);
1070 avfilter_inout_free(&outputs);
1071 goto fail;
1072 }
1073 avfilter_inout_free(&inputs);
1074
1075 for (cur = outputs, i = 0; cur; cur = cur->next, i++)
1076 configure_output_filter(fg, fg->outputs[i], cur);
1077 avfilter_inout_free(&outputs);
1078
1079 if (!auto_conversion_filters)
1080 avfilter_graph_set_auto_convert(fg->graph, AVFILTER_AUTO_CONVERT_NONE);
1081 if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
1082 goto fail;
1083
1084 /* limit the lists of allowed formats to the ones selected, to
1085 * make sure they stay the same if the filtergraph is reconfigured later */
1086 for (i = 0; i < fg->nb_outputs; i++) {
1087 OutputFilter *ofilter = fg->outputs[i];
1088 AVFilterContext *sink = ofilter->filter;
1089
1090 ofilter->format = av_buffersink_get_format(sink);
1091
1092 ofilter->width = av_buffersink_get_w(sink);
1093 ofilter->height = av_buffersink_get_h(sink);
1094
1095 ofilter->sample_rate = av_buffersink_get_sample_rate(sink);
1096 ofilter->channel_layout = av_buffersink_get_channel_layout(sink);
1097 }
1098
1099 fg->reconfiguration = 1;
1100
1101 for (i = 0; i < fg->nb_outputs; i++) {
1102 OutputStream *ost = fg->outputs[i]->ost;
1103 if (!ost->enc) {
1104 /* identical to the same check in ffmpeg.c, needed because
1105 complex filter graphs are initialized earlier */
1106 av_log(NULL, AV_LOG_ERROR, "Encoder (codec %s) not found for output stream #%d:%d\n",
1107 avcodec_get_name(ost->st->codecpar->codec_id), ost->file_index, ost->index);
1108 ret = AVERROR(EINVAL);
1109 goto fail;
1110 }
1111 if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1112 !(ost->enc->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE))
1113 av_buffersink_set_frame_size(ost->filter->filter,
1114 ost->enc_ctx->frame_size);
1115 }
1116
1117 for (i = 0; i < fg->nb_inputs; i++) {
1118 while (av_fifo_size(fg->inputs[i]->frame_queue)) {
1119 AVFrame *tmp;
1120 av_fifo_generic_read(fg->inputs[i]->frame_queue, &tmp, sizeof(tmp), NULL);
1121 ret = av_buffersrc_add_frame(fg->inputs[i]->filter, tmp);
1122 av_frame_free(&tmp);
1123 if (ret < 0)
1124 goto fail;
1125 }
1126 }
1127
1128 /* send the EOFs for the finished inputs */
1129 for (i = 0; i < fg->nb_inputs; i++) {
1130 if (fg->inputs[i]->eof) {
1131 ret = av_buffersrc_add_frame(fg->inputs[i]->filter, NULL);
1132 if (ret < 0)
1133 goto fail;
1134 }
1135 }
1136
1137 /* process queued up subtitle packets */
1138 for (i = 0; i < fg->nb_inputs; i++) {
1139 InputStream *ist = fg->inputs[i]->ist;
1140 if (ist->sub2video.sub_queue && ist->sub2video.frame) {
1141 while (av_fifo_size(ist->sub2video.sub_queue)) {
1142 AVSubtitle tmp;
1143 av_fifo_generic_read(ist->sub2video.sub_queue, &tmp, sizeof(tmp), NULL);
1144 sub2video_update(ist, INT64_MIN, &tmp);
1145 avsubtitle_free(&tmp);
1146 }
1147 }
1148 }
1149
1150 return 0;
1151
1152 fail:
1153 cleanup_filtergraph(fg);
1154 return ret;
1155 }
1156
ifilter_parameters_from_frame(InputFilter * ifilter,const AVFrame * frame)1157 int ifilter_parameters_from_frame(InputFilter *ifilter, const AVFrame *frame)
1158 {
1159 av_buffer_unref(&ifilter->hw_frames_ctx);
1160
1161 ifilter->format = frame->format;
1162
1163 ifilter->width = frame->width;
1164 ifilter->height = frame->height;
1165 ifilter->sample_aspect_ratio = frame->sample_aspect_ratio;
1166
1167 ifilter->sample_rate = frame->sample_rate;
1168 ifilter->channels = frame->channels;
1169 ifilter->channel_layout = frame->channel_layout;
1170
1171 if (frame->hw_frames_ctx) {
1172 ifilter->hw_frames_ctx = av_buffer_ref(frame->hw_frames_ctx);
1173 if (!ifilter->hw_frames_ctx)
1174 return AVERROR(ENOMEM);
1175 }
1176
1177 return 0;
1178 }
1179
filtergraph_is_simple(FilterGraph * fg)1180 int filtergraph_is_simple(FilterGraph *fg)
1181 {
1182 return !fg->graph_desc;
1183 }
1184