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,AVCodec * codec,enum AVPixelFormat target)63 enum AVPixelFormat choose_pixel_fmt(AVStream *st, AVCodecContext *enc_ctx, AVCodec *codec, enum AVPixelFormat target)
64 {
65 if (codec && codec->pix_fmts) {
66 const enum AVPixelFormat *p = codec->pix_fmts;
67 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(target);
68 //FIXME: This should check for AV_PIX_FMT_FLAG_ALPHA after PAL8 pixel format without alpha is implemented
69 int has_alpha = desc ? desc->nb_components % 2 == 0 : 0;
70 enum AVPixelFormat best= AV_PIX_FMT_NONE;
71
72 if (enc_ctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
73 p = get_compliance_unofficial_pix_fmts(enc_ctx->codec_id, p);
74 }
75 for (; *p != AV_PIX_FMT_NONE; p++) {
76 best= avcodec_find_best_pix_fmt_of_2(best, *p, target, has_alpha, NULL);
77 if (*p == target)
78 break;
79 }
80 if (*p == AV_PIX_FMT_NONE) {
81 if (target != AV_PIX_FMT_NONE)
82 av_log(NULL, AV_LOG_WARNING,
83 "Incompatible pixel format '%s' for codec '%s', auto-selecting format '%s'\n",
84 av_get_pix_fmt_name(target),
85 codec->name,
86 av_get_pix_fmt_name(best));
87 return best;
88 }
89 }
90 return target;
91 }
92
choose_sample_fmt(AVStream * st,AVCodec * codec)93 void choose_sample_fmt(AVStream *st, AVCodec *codec)
94 {
95 if (codec && codec->sample_fmts) {
96 const enum AVSampleFormat *p = codec->sample_fmts;
97 for (; *p != -1; p++) {
98 if (*p == st->codecpar->format)
99 break;
100 }
101 if (*p == -1) {
102 const AVCodecDescriptor *desc = avcodec_descriptor_get(codec->id);
103 if(desc && (desc->props & AV_CODEC_PROP_LOSSLESS) && av_get_sample_fmt_name(st->codecpar->format) > av_get_sample_fmt_name(codec->sample_fmts[0]))
104 av_log(NULL, AV_LOG_ERROR, "Conversion will not be lossless.\n");
105 if(av_get_sample_fmt_name(st->codecpar->format))
106 av_log(NULL, AV_LOG_WARNING,
107 "Incompatible sample format '%s' for codec '%s', auto-selecting format '%s'\n",
108 av_get_sample_fmt_name(st->codecpar->format),
109 codec->name,
110 av_get_sample_fmt_name(codec->sample_fmts[0]));
111 st->codecpar->format = codec->sample_fmts[0];
112 }
113 }
114 }
115
choose_pix_fmts(OutputFilter * ofilter)116 static char *choose_pix_fmts(OutputFilter *ofilter)
117 {
118 OutputStream *ost = ofilter->ost;
119 AVDictionaryEntry *strict_dict = av_dict_get(ost->encoder_opts, "strict", NULL, 0);
120 if (strict_dict)
121 // used by choose_pixel_fmt() and below
122 av_opt_set(ost->enc_ctx, "strict", strict_dict->value, 0);
123
124 if (ost->keep_pix_fmt) {
125 avfilter_graph_set_auto_convert(ofilter->graph->graph,
126 AVFILTER_AUTO_CONVERT_NONE);
127 if (ost->enc_ctx->pix_fmt == AV_PIX_FMT_NONE)
128 return NULL;
129 return av_strdup(av_get_pix_fmt_name(ost->enc_ctx->pix_fmt));
130 }
131 if (ost->enc_ctx->pix_fmt != AV_PIX_FMT_NONE) {
132 return av_strdup(av_get_pix_fmt_name(choose_pixel_fmt(ost->st, ost->enc_ctx, ost->enc, ost->enc_ctx->pix_fmt)));
133 } else if (ost->enc && ost->enc->pix_fmts) {
134 const enum AVPixelFormat *p;
135 AVIOContext *s = NULL;
136 uint8_t *ret;
137 int len;
138
139 if (avio_open_dyn_buf(&s) < 0)
140 exit_program(1);
141
142 p = ost->enc->pix_fmts;
143 if (ost->enc_ctx->strict_std_compliance <= FF_COMPLIANCE_UNOFFICIAL) {
144 p = get_compliance_unofficial_pix_fmts(ost->enc_ctx->codec_id, p);
145 }
146
147 for (; *p != AV_PIX_FMT_NONE; p++) {
148 const char *name = av_get_pix_fmt_name(*p);
149 avio_printf(s, "%s|", name);
150 }
151 len = avio_close_dyn_buf(s, &ret);
152 ret[len - 1] = 0;
153 return ret;
154 } else
155 return NULL;
156 }
157
158 /* Define a function for building a string containing a list of
159 * allowed formats. */
160 #define DEF_CHOOSE_FORMAT(suffix, type, var, supported_list, none, get_name) \
161 static char *choose_ ## suffix (OutputFilter *ofilter) \
162 { \
163 if (ofilter->var != none) { \
164 get_name(ofilter->var); \
165 return av_strdup(name); \
166 } else if (ofilter->supported_list) { \
167 const type *p; \
168 AVIOContext *s = NULL; \
169 uint8_t *ret; \
170 int len; \
171 \
172 if (avio_open_dyn_buf(&s) < 0) \
173 exit_program(1); \
174 \
175 for (p = ofilter->supported_list; *p != none; p++) { \
176 get_name(*p); \
177 avio_printf(s, "%s|", name); \
178 } \
179 len = avio_close_dyn_buf(s, &ret); \
180 ret[len - 1] = 0; \
181 return ret; \
182 } else \
183 return NULL; \
184 }
185
186 //DEF_CHOOSE_FORMAT(pix_fmts, enum AVPixelFormat, format, formats, AV_PIX_FMT_NONE,
187 // GET_PIX_FMT_NAME)
188
DEF_CHOOSE_FORMAT(sample_fmts,enum AVSampleFormat,format,formats,AV_SAMPLE_FMT_NONE,GET_SAMPLE_FMT_NAME)189 DEF_CHOOSE_FORMAT(sample_fmts, enum AVSampleFormat, format, formats,
190 AV_SAMPLE_FMT_NONE, GET_SAMPLE_FMT_NAME)
191
192 DEF_CHOOSE_FORMAT(sample_rates, int, sample_rate, sample_rates, 0,
193 GET_SAMPLE_RATE_NAME)
194
195 DEF_CHOOSE_FORMAT(channel_layouts, uint64_t, channel_layout, channel_layouts, 0,
196 GET_CH_LAYOUT_NAME)
197
198 int init_simple_filtergraph(InputStream *ist, OutputStream *ost)
199 {
200 FilterGraph *fg = av_mallocz(sizeof(*fg));
201
202 if (!fg)
203 exit_program(1);
204 fg->index = nb_filtergraphs;
205
206 GROW_ARRAY(fg->outputs, fg->nb_outputs);
207 if (!(fg->outputs[0] = av_mallocz(sizeof(*fg->outputs[0]))))
208 exit_program(1);
209 fg->outputs[0]->ost = ost;
210 fg->outputs[0]->graph = fg;
211 fg->outputs[0]->format = -1;
212
213 ost->filter = fg->outputs[0];
214
215 GROW_ARRAY(fg->inputs, fg->nb_inputs);
216 if (!(fg->inputs[0] = av_mallocz(sizeof(*fg->inputs[0]))))
217 exit_program(1);
218 fg->inputs[0]->ist = ist;
219 fg->inputs[0]->graph = fg;
220 fg->inputs[0]->format = -1;
221
222 fg->inputs[0]->frame_queue = av_fifo_alloc(8 * sizeof(AVFrame*));
223 if (!fg->inputs[0]->frame_queue)
224 exit_program(1);
225
226 GROW_ARRAY(ist->filters, ist->nb_filters);
227 ist->filters[ist->nb_filters - 1] = fg->inputs[0];
228
229 GROW_ARRAY(filtergraphs, nb_filtergraphs);
230 filtergraphs[nb_filtergraphs - 1] = fg;
231
232 return 0;
233 }
234
describe_filter_link(FilterGraph * fg,AVFilterInOut * inout,int in)235 static char *describe_filter_link(FilterGraph *fg, AVFilterInOut *inout, int in)
236 {
237 AVFilterContext *ctx = inout->filter_ctx;
238 AVFilterPad *pads = in ? ctx->input_pads : ctx->output_pads;
239 int nb_pads = in ? ctx->nb_inputs : ctx->nb_outputs;
240 AVIOContext *pb;
241 uint8_t *res = NULL;
242
243 if (avio_open_dyn_buf(&pb) < 0)
244 exit_program(1);
245
246 avio_printf(pb, "%s", ctx->filter->name);
247 if (nb_pads > 1)
248 avio_printf(pb, ":%s", avfilter_pad_get_name(pads, inout->pad_idx));
249 avio_w8(pb, 0);
250 avio_close_dyn_buf(pb, &res);
251 return res;
252 }
253
init_input_filter(FilterGraph * fg,AVFilterInOut * in)254 static void init_input_filter(FilterGraph *fg, AVFilterInOut *in)
255 {
256 InputStream *ist = NULL;
257 enum AVMediaType type = avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx);
258 int i;
259
260 // TODO: support other filter types
261 if (type != AVMEDIA_TYPE_VIDEO && type != AVMEDIA_TYPE_AUDIO) {
262 av_log(NULL, AV_LOG_FATAL, "Only video and audio filters supported "
263 "currently.\n");
264 exit_program(1);
265 }
266
267 if (in->name) {
268 AVFormatContext *s;
269 AVStream *st = NULL;
270 char *p;
271 int file_idx = strtol(in->name, &p, 0);
272
273 if (file_idx < 0 || file_idx >= nb_input_files) {
274 av_log(NULL, AV_LOG_FATAL, "Invalid file index %d in filtergraph description %s.\n",
275 file_idx, fg->graph_desc);
276 exit_program(1);
277 }
278 s = input_files[file_idx]->ctx;
279
280 for (i = 0; i < s->nb_streams; i++) {
281 enum AVMediaType stream_type = s->streams[i]->codecpar->codec_type;
282 if (stream_type != type &&
283 !(stream_type == AVMEDIA_TYPE_SUBTITLE &&
284 type == AVMEDIA_TYPE_VIDEO /* sub2video hack */))
285 continue;
286 if (check_stream_specifier(s, s->streams[i], *p == ':' ? p + 1 : p) == 1) {
287 st = s->streams[i];
288 break;
289 }
290 }
291 if (!st) {
292 av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
293 "matches no streams.\n", p, fg->graph_desc);
294 exit_program(1);
295 }
296 ist = input_streams[input_files[file_idx]->ist_index + st->index];
297 if (ist->user_set_discard == AVDISCARD_ALL) {
298 av_log(NULL, AV_LOG_FATAL, "Stream specifier '%s' in filtergraph description %s "
299 "matches a disabled input stream.\n", p, fg->graph_desc);
300 exit_program(1);
301 }
302 } else {
303 /* find the first unused stream of corresponding type */
304 for (i = 0; i < nb_input_streams; i++) {
305 ist = input_streams[i];
306 if (ist->user_set_discard == AVDISCARD_ALL)
307 continue;
308 if (ist->dec_ctx->codec_type == type && ist->discard)
309 break;
310 }
311 if (i == nb_input_streams) {
312 av_log(NULL, AV_LOG_FATAL, "Cannot find a matching stream for "
313 "unlabeled input pad %d on filter %s\n", in->pad_idx,
314 in->filter_ctx->name);
315 exit_program(1);
316 }
317 }
318 av_assert0(ist);
319
320 ist->discard = 0;
321 ist->decoding_needed |= DECODING_FOR_FILTER;
322 ist->st->discard = AVDISCARD_NONE;
323
324 GROW_ARRAY(fg->inputs, fg->nb_inputs);
325 if (!(fg->inputs[fg->nb_inputs - 1] = av_mallocz(sizeof(*fg->inputs[0]))))
326 exit_program(1);
327 fg->inputs[fg->nb_inputs - 1]->ist = ist;
328 fg->inputs[fg->nb_inputs - 1]->graph = fg;
329 fg->inputs[fg->nb_inputs - 1]->format = -1;
330 fg->inputs[fg->nb_inputs - 1]->type = ist->st->codecpar->codec_type;
331 fg->inputs[fg->nb_inputs - 1]->name = describe_filter_link(fg, in, 1);
332
333 fg->inputs[fg->nb_inputs - 1]->frame_queue = av_fifo_alloc(8 * sizeof(AVFrame*));
334 if (!fg->inputs[fg->nb_inputs - 1]->frame_queue)
335 exit_program(1);
336
337 GROW_ARRAY(ist->filters, ist->nb_filters);
338 ist->filters[ist->nb_filters - 1] = fg->inputs[fg->nb_inputs - 1];
339 }
340
init_complex_filtergraph(FilterGraph * fg)341 int init_complex_filtergraph(FilterGraph *fg)
342 {
343 AVFilterInOut *inputs, *outputs, *cur;
344 AVFilterGraph *graph;
345 int ret = 0;
346
347 /* this graph is only used for determining the kinds of inputs
348 * and outputs we have, and is discarded on exit from this function */
349 graph = avfilter_graph_alloc();
350 if (!graph)
351 return AVERROR(ENOMEM);
352 graph->nb_threads = 1;
353
354 ret = avfilter_graph_parse2(graph, fg->graph_desc, &inputs, &outputs);
355 if (ret < 0)
356 goto fail;
357
358 for (cur = inputs; cur; cur = cur->next)
359 init_input_filter(fg, cur);
360
361 for (cur = outputs; cur;) {
362 GROW_ARRAY(fg->outputs, fg->nb_outputs);
363 fg->outputs[fg->nb_outputs - 1] = av_mallocz(sizeof(*fg->outputs[0]));
364 if (!fg->outputs[fg->nb_outputs - 1])
365 exit_program(1);
366
367 fg->outputs[fg->nb_outputs - 1]->graph = fg;
368 fg->outputs[fg->nb_outputs - 1]->out_tmp = cur;
369 fg->outputs[fg->nb_outputs - 1]->type = avfilter_pad_get_type(cur->filter_ctx->output_pads,
370 cur->pad_idx);
371 fg->outputs[fg->nb_outputs - 1]->name = describe_filter_link(fg, cur, 0);
372 cur = cur->next;
373 fg->outputs[fg->nb_outputs - 1]->out_tmp->next = NULL;
374 }
375
376 fail:
377 avfilter_inout_free(&inputs);
378 avfilter_graph_free(&graph);
379 return ret;
380 }
381
insert_trim(int64_t start_time,int64_t duration,AVFilterContext ** last_filter,int * pad_idx,const char * filter_name)382 static int insert_trim(int64_t start_time, int64_t duration,
383 AVFilterContext **last_filter, int *pad_idx,
384 const char *filter_name)
385 {
386 AVFilterGraph *graph = (*last_filter)->graph;
387 AVFilterContext *ctx;
388 const AVFilter *trim;
389 enum AVMediaType type = avfilter_pad_get_type((*last_filter)->output_pads, *pad_idx);
390 const char *name = (type == AVMEDIA_TYPE_VIDEO) ? "trim" : "atrim";
391 int ret = 0;
392
393 if (duration == INT64_MAX && start_time == AV_NOPTS_VALUE)
394 return 0;
395
396 trim = avfilter_get_by_name(name);
397 if (!trim) {
398 av_log(NULL, AV_LOG_ERROR, "%s filter not present, cannot limit "
399 "recording time.\n", name);
400 return AVERROR_FILTER_NOT_FOUND;
401 }
402
403 ctx = avfilter_graph_alloc_filter(graph, trim, filter_name);
404 if (!ctx)
405 return AVERROR(ENOMEM);
406
407 if (duration != INT64_MAX) {
408 ret = av_opt_set_int(ctx, "durationi", duration,
409 AV_OPT_SEARCH_CHILDREN);
410 }
411 if (ret >= 0 && start_time != AV_NOPTS_VALUE) {
412 ret = av_opt_set_int(ctx, "starti", start_time,
413 AV_OPT_SEARCH_CHILDREN);
414 }
415 if (ret < 0) {
416 av_log(ctx, AV_LOG_ERROR, "Error configuring the %s filter", name);
417 return ret;
418 }
419
420 ret = avfilter_init_str(ctx, NULL);
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
insert_filter(AVFilterContext ** last_filter,int * pad_idx,const char * filter_name,const char * args)433 static int insert_filter(AVFilterContext **last_filter, int *pad_idx,
434 const char *filter_name, const char *args)
435 {
436 AVFilterGraph *graph = (*last_filter)->graph;
437 AVFilterContext *ctx;
438 int ret;
439
440 ret = avfilter_graph_create_filter(&ctx,
441 avfilter_get_by_name(filter_name),
442 filter_name, args, NULL, graph);
443 if (ret < 0)
444 return ret;
445
446 ret = avfilter_link(*last_filter, *pad_idx, ctx, 0);
447 if (ret < 0)
448 return ret;
449
450 *last_filter = ctx;
451 *pad_idx = 0;
452 return 0;
453 }
454
configure_output_video_filter(FilterGraph * fg,OutputFilter * ofilter,AVFilterInOut * out)455 static int configure_output_video_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
456 {
457 char *pix_fmts;
458 OutputStream *ost = ofilter->ost;
459 OutputFile *of = output_files[ost->file_index];
460 AVFilterContext *last_filter = out->filter_ctx;
461 int pad_idx = out->pad_idx;
462 int ret;
463 char name[255];
464
465 snprintf(name, sizeof(name), "out_%d_%d", ost->file_index, ost->index);
466 ret = avfilter_graph_create_filter(&ofilter->filter,
467 avfilter_get_by_name("buffersink"),
468 name, NULL, NULL, fg->graph);
469
470 if (ret < 0)
471 return ret;
472
473 if (ofilter->width || ofilter->height) {
474 char args[255];
475 AVFilterContext *filter;
476 AVDictionaryEntry *e = NULL;
477
478 snprintf(args, sizeof(args), "%d:%d",
479 ofilter->width, ofilter->height);
480
481 while ((e = av_dict_get(ost->sws_dict, "", e,
482 AV_DICT_IGNORE_SUFFIX))) {
483 av_strlcatf(args, sizeof(args), ":%s=%s", e->key, e->value);
484 }
485
486 snprintf(name, sizeof(name), "scaler_out_%d_%d",
487 ost->file_index, ost->index);
488 if ((ret = avfilter_graph_create_filter(&filter, avfilter_get_by_name("scale"),
489 name, args, NULL, fg->graph)) < 0)
490 return ret;
491 if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
492 return ret;
493
494 last_filter = filter;
495 pad_idx = 0;
496 }
497
498 if ((pix_fmts = choose_pix_fmts(ofilter))) {
499 AVFilterContext *filter;
500 snprintf(name, sizeof(name), "format_out_%d_%d",
501 ost->file_index, ost->index);
502 ret = avfilter_graph_create_filter(&filter,
503 avfilter_get_by_name("format"),
504 "format", pix_fmts, NULL, fg->graph);
505 av_freep(&pix_fmts);
506 if (ret < 0)
507 return ret;
508 if ((ret = avfilter_link(last_filter, pad_idx, filter, 0)) < 0)
509 return ret;
510
511 last_filter = filter;
512 pad_idx = 0;
513 }
514
515 if (ost->frame_rate.num && 0) {
516 AVFilterContext *fps;
517 char args[255];
518
519 snprintf(args, sizeof(args), "fps=%d/%d", ost->frame_rate.num,
520 ost->frame_rate.den);
521 snprintf(name, sizeof(name), "fps_out_%d_%d",
522 ost->file_index, ost->index);
523 ret = avfilter_graph_create_filter(&fps, avfilter_get_by_name("fps"),
524 name, args, NULL, fg->graph);
525 if (ret < 0)
526 return ret;
527
528 ret = avfilter_link(last_filter, pad_idx, fps, 0);
529 if (ret < 0)
530 return ret;
531 last_filter = fps;
532 pad_idx = 0;
533 }
534
535 snprintf(name, sizeof(name), "trim_out_%d_%d",
536 ost->file_index, ost->index);
537 ret = insert_trim(of->start_time, of->recording_time,
538 &last_filter, &pad_idx, name);
539 if (ret < 0)
540 return ret;
541
542
543 if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
544 return ret;
545
546 return 0;
547 }
548
configure_output_audio_filter(FilterGraph * fg,OutputFilter * ofilter,AVFilterInOut * out)549 static int configure_output_audio_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
550 {
551 OutputStream *ost = ofilter->ost;
552 OutputFile *of = output_files[ost->file_index];
553 AVCodecContext *codec = ost->enc_ctx;
554 AVFilterContext *last_filter = out->filter_ctx;
555 int pad_idx = out->pad_idx;
556 char *sample_fmts, *sample_rates, *channel_layouts;
557 char name[255];
558 int ret;
559
560 snprintf(name, sizeof(name), "out_%d_%d", ost->file_index, ost->index);
561 ret = avfilter_graph_create_filter(&ofilter->filter,
562 avfilter_get_by_name("abuffersink"),
563 name, NULL, NULL, fg->graph);
564 if (ret < 0)
565 return ret;
566 if ((ret = av_opt_set_int(ofilter->filter, "all_channel_counts", 1, AV_OPT_SEARCH_CHILDREN)) < 0)
567 return ret;
568
569 #define AUTO_INSERT_FILTER(opt_name, filter_name, arg) do { \
570 AVFilterContext *filt_ctx; \
571 \
572 av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi " \
573 "similarly to -af " filter_name "=%s.\n", arg); \
574 \
575 ret = avfilter_graph_create_filter(&filt_ctx, \
576 avfilter_get_by_name(filter_name), \
577 filter_name, arg, NULL, fg->graph); \
578 if (ret < 0) \
579 return ret; \
580 \
581 ret = avfilter_link(last_filter, pad_idx, filt_ctx, 0); \
582 if (ret < 0) \
583 return ret; \
584 \
585 last_filter = filt_ctx; \
586 pad_idx = 0; \
587 } while (0)
588 if (ost->audio_channels_mapped) {
589 int i;
590 AVBPrint pan_buf;
591 av_bprint_init(&pan_buf, 256, 8192);
592 av_bprintf(&pan_buf, "0x%"PRIx64,
593 av_get_default_channel_layout(ost->audio_channels_mapped));
594 for (i = 0; i < ost->audio_channels_mapped; i++)
595 if (ost->audio_channels_map[i] != -1)
596 av_bprintf(&pan_buf, "|c%d=c%d", i, ost->audio_channels_map[i]);
597
598 AUTO_INSERT_FILTER("-map_channel", "pan", pan_buf.str);
599 av_bprint_finalize(&pan_buf, NULL);
600 }
601
602 if (codec->channels && !codec->channel_layout)
603 codec->channel_layout = av_get_default_channel_layout(codec->channels);
604
605 sample_fmts = choose_sample_fmts(ofilter);
606 sample_rates = choose_sample_rates(ofilter);
607 channel_layouts = choose_channel_layouts(ofilter);
608 if (sample_fmts || sample_rates || channel_layouts) {
609 AVFilterContext *format;
610 char args[256];
611 args[0] = 0;
612
613 if (sample_fmts)
614 av_strlcatf(args, sizeof(args), "sample_fmts=%s:",
615 sample_fmts);
616 if (sample_rates)
617 av_strlcatf(args, sizeof(args), "sample_rates=%s:",
618 sample_rates);
619 if (channel_layouts)
620 av_strlcatf(args, sizeof(args), "channel_layouts=%s:",
621 channel_layouts);
622
623 av_freep(&sample_fmts);
624 av_freep(&sample_rates);
625 av_freep(&channel_layouts);
626
627 snprintf(name, sizeof(name), "format_out_%d_%d",
628 ost->file_index, ost->index);
629 ret = avfilter_graph_create_filter(&format,
630 avfilter_get_by_name("aformat"),
631 name, args, NULL, fg->graph);
632 if (ret < 0)
633 return ret;
634
635 ret = avfilter_link(last_filter, pad_idx, format, 0);
636 if (ret < 0)
637 return ret;
638
639 last_filter = format;
640 pad_idx = 0;
641 }
642
643 if (audio_volume != 256 && 0) {
644 char args[256];
645
646 snprintf(args, sizeof(args), "%f", audio_volume / 256.);
647 AUTO_INSERT_FILTER("-vol", "volume", args);
648 }
649
650 if (ost->apad && of->shortest) {
651 char args[256];
652 int i;
653
654 for (i=0; i<of->ctx->nb_streams; i++)
655 if (of->ctx->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO)
656 break;
657
658 if (i<of->ctx->nb_streams) {
659 snprintf(args, sizeof(args), "%s", ost->apad);
660 AUTO_INSERT_FILTER("-apad", "apad", args);
661 }
662 }
663
664 snprintf(name, sizeof(name), "trim for output stream %d:%d",
665 ost->file_index, ost->index);
666 ret = insert_trim(of->start_time, of->recording_time,
667 &last_filter, &pad_idx, name);
668 if (ret < 0)
669 return ret;
670
671 if ((ret = avfilter_link(last_filter, pad_idx, ofilter->filter, 0)) < 0)
672 return ret;
673
674 return 0;
675 }
676
configure_output_filter(FilterGraph * fg,OutputFilter * ofilter,AVFilterInOut * out)677 int configure_output_filter(FilterGraph *fg, OutputFilter *ofilter, AVFilterInOut *out)
678 {
679 if (!ofilter->ost) {
680 av_log(NULL, AV_LOG_FATAL, "Filter %s has an unconnected output\n", ofilter->name);
681 exit_program(1);
682 }
683
684 switch (avfilter_pad_get_type(out->filter_ctx->output_pads, out->pad_idx)) {
685 case AVMEDIA_TYPE_VIDEO: return configure_output_video_filter(fg, ofilter, out);
686 case AVMEDIA_TYPE_AUDIO: return configure_output_audio_filter(fg, ofilter, out);
687 default: av_assert0(0);
688 }
689 }
690
check_filter_outputs(void)691 void check_filter_outputs(void)
692 {
693 int i;
694 for (i = 0; i < nb_filtergraphs; i++) {
695 int n;
696 for (n = 0; n < filtergraphs[i]->nb_outputs; n++) {
697 OutputFilter *output = filtergraphs[i]->outputs[n];
698 if (!output->ost) {
699 av_log(NULL, AV_LOG_FATAL, "Filter %s has an unconnected output\n", output->name);
700 exit_program(1);
701 }
702 }
703 }
704 }
705
sub2video_prepare(InputStream * ist,InputFilter * ifilter)706 static int sub2video_prepare(InputStream *ist, InputFilter *ifilter)
707 {
708 AVFormatContext *avf = input_files[ist->file_index]->ctx;
709 int i, w, h;
710
711 /* Compute the size of the canvas for the subtitles stream.
712 If the subtitles codecpar has set a size, use it. Otherwise use the
713 maximum dimensions of the video streams in the same file. */
714 w = ifilter->width;
715 h = ifilter->height;
716 if (!(w && h)) {
717 for (i = 0; i < avf->nb_streams; i++) {
718 if (avf->streams[i]->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
719 w = FFMAX(w, avf->streams[i]->codecpar->width);
720 h = FFMAX(h, avf->streams[i]->codecpar->height);
721 }
722 }
723 if (!(w && h)) {
724 w = FFMAX(w, 720);
725 h = FFMAX(h, 576);
726 }
727 av_log(avf, AV_LOG_INFO, "sub2video: using %dx%d canvas\n", w, h);
728 }
729 ist->sub2video.w = ifilter->width = w;
730 ist->sub2video.h = ifilter->height = h;
731
732 ifilter->width = ist->dec_ctx->width ? ist->dec_ctx->width : ist->sub2video.w;
733 ifilter->height = ist->dec_ctx->height ? ist->dec_ctx->height : ist->sub2video.h;
734
735 /* rectangles are AV_PIX_FMT_PAL8, but we have no guarantee that the
736 palettes for all rectangles are identical or compatible */
737 ifilter->format = AV_PIX_FMT_RGB32;
738
739 ist->sub2video.frame = av_frame_alloc();
740 if (!ist->sub2video.frame)
741 return AVERROR(ENOMEM);
742 ist->sub2video.last_pts = INT64_MIN;
743 ist->sub2video.end_pts = INT64_MIN;
744
745 /* sub2video structure has been (re-)initialized.
746 Mark it as such so that the system will be
747 initialized with the first received heartbeat. */
748 ist->sub2video.initialize = 1;
749
750 return 0;
751 }
752
configure_input_video_filter(FilterGraph * fg,InputFilter * ifilter,AVFilterInOut * in)753 static int configure_input_video_filter(FilterGraph *fg, InputFilter *ifilter,
754 AVFilterInOut *in)
755 {
756 AVFilterContext *last_filter;
757 const AVFilter *buffer_filt = avfilter_get_by_name("buffer");
758 InputStream *ist = ifilter->ist;
759 InputFile *f = input_files[ist->file_index];
760 AVRational tb = ist->framerate.num ? av_inv_q(ist->framerate) :
761 ist->st->time_base;
762 AVRational fr = ist->framerate;
763 AVRational sar;
764 AVBPrint args;
765 char name[255];
766 int ret, pad_idx = 0;
767 int64_t tsoffset = 0;
768 AVBufferSrcParameters *par = av_buffersrc_parameters_alloc();
769
770 if (!par)
771 return AVERROR(ENOMEM);
772 memset(par, 0, sizeof(*par));
773 par->format = AV_PIX_FMT_NONE;
774
775 if (ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) {
776 av_log(NULL, AV_LOG_ERROR, "Cannot connect video filter to audio input\n");
777 ret = AVERROR(EINVAL);
778 goto fail;
779 }
780
781 if (!fr.num)
782 fr = av_guess_frame_rate(input_files[ist->file_index]->ctx, ist->st, NULL);
783
784 if (ist->dec_ctx->codec_type == AVMEDIA_TYPE_SUBTITLE) {
785 ret = sub2video_prepare(ist, ifilter);
786 if (ret < 0)
787 goto fail;
788 }
789
790 sar = ifilter->sample_aspect_ratio;
791 if(!sar.den)
792 sar = (AVRational){0,1};
793 av_bprint_init(&args, 0, AV_BPRINT_SIZE_AUTOMATIC);
794 av_bprintf(&args,
795 "video_size=%dx%d:pix_fmt=%d:time_base=%d/%d:"
796 "pixel_aspect=%d/%d",
797 ifilter->width, ifilter->height, ifilter->format,
798 tb.num, tb.den, sar.num, sar.den);
799 if (fr.num && fr.den)
800 av_bprintf(&args, ":frame_rate=%d/%d", fr.num, fr.den);
801 snprintf(name, sizeof(name), "graph %d input from stream %d:%d", fg->index,
802 ist->file_index, ist->st->index);
803
804
805 if ((ret = avfilter_graph_create_filter(&ifilter->filter, buffer_filt, name,
806 args.str, NULL, fg->graph)) < 0)
807 goto fail;
808 par->hw_frames_ctx = ifilter->hw_frames_ctx;
809 ret = av_buffersrc_parameters_set(ifilter->filter, par);
810 if (ret < 0)
811 goto fail;
812 av_freep(&par);
813 last_filter = ifilter->filter;
814
815 if (ist->autorotate) {
816 double theta = get_rotation(ist->st);
817
818 if (fabs(theta - 90) < 1.0) {
819 ret = insert_filter(&last_filter, &pad_idx, "transpose", "clock");
820 } else if (fabs(theta - 180) < 1.0) {
821 ret = insert_filter(&last_filter, &pad_idx, "hflip", NULL);
822 if (ret < 0)
823 return ret;
824 ret = insert_filter(&last_filter, &pad_idx, "vflip", NULL);
825 } else if (fabs(theta - 270) < 1.0) {
826 ret = insert_filter(&last_filter, &pad_idx, "transpose", "cclock");
827 } else if (fabs(theta) > 1.0) {
828 char rotate_buf[64];
829 snprintf(rotate_buf, sizeof(rotate_buf), "%f*PI/180", theta);
830 ret = insert_filter(&last_filter, &pad_idx, "rotate", rotate_buf);
831 }
832 if (ret < 0)
833 return ret;
834 }
835
836 if (do_deinterlace) {
837 AVFilterContext *yadif;
838
839 snprintf(name, sizeof(name), "deinterlace_in_%d_%d",
840 ist->file_index, ist->st->index);
841 if ((ret = avfilter_graph_create_filter(&yadif,
842 avfilter_get_by_name("yadif"),
843 name, "", NULL,
844 fg->graph)) < 0)
845 return ret;
846
847 if ((ret = avfilter_link(last_filter, 0, yadif, 0)) < 0)
848 return ret;
849
850 last_filter = yadif;
851 }
852
853 snprintf(name, sizeof(name), "trim_in_%d_%d",
854 ist->file_index, ist->st->index);
855 if (copy_ts) {
856 tsoffset = f->start_time == AV_NOPTS_VALUE ? 0 : f->start_time;
857 if (!start_at_zero && f->ctx->start_time != AV_NOPTS_VALUE)
858 tsoffset += f->ctx->start_time;
859 }
860 ret = insert_trim(((f->start_time == AV_NOPTS_VALUE) || !f->accurate_seek) ?
861 AV_NOPTS_VALUE : tsoffset, f->recording_time,
862 &last_filter, &pad_idx, name);
863 if (ret < 0)
864 return ret;
865
866 if ((ret = avfilter_link(last_filter, 0, in->filter_ctx, in->pad_idx)) < 0)
867 return ret;
868 return 0;
869 fail:
870 av_freep(&par);
871
872 return ret;
873 }
874
configure_input_audio_filter(FilterGraph * fg,InputFilter * ifilter,AVFilterInOut * in)875 static int configure_input_audio_filter(FilterGraph *fg, InputFilter *ifilter,
876 AVFilterInOut *in)
877 {
878 AVFilterContext *last_filter;
879 const AVFilter *abuffer_filt = avfilter_get_by_name("abuffer");
880 InputStream *ist = ifilter->ist;
881 InputFile *f = input_files[ist->file_index];
882 AVBPrint args;
883 char name[255];
884 int ret, pad_idx = 0;
885 int64_t tsoffset = 0;
886
887 if (ist->dec_ctx->codec_type != AVMEDIA_TYPE_AUDIO) {
888 av_log(NULL, AV_LOG_ERROR, "Cannot connect audio filter to non audio input\n");
889 return AVERROR(EINVAL);
890 }
891
892 av_bprint_init(&args, 0, AV_BPRINT_SIZE_AUTOMATIC);
893 av_bprintf(&args, "time_base=%d/%d:sample_rate=%d:sample_fmt=%s",
894 1, ifilter->sample_rate,
895 ifilter->sample_rate,
896 av_get_sample_fmt_name(ifilter->format));
897 if (ifilter->channel_layout)
898 av_bprintf(&args, ":channel_layout=0x%"PRIx64,
899 ifilter->channel_layout);
900 else
901 av_bprintf(&args, ":channels=%d", ifilter->channels);
902 snprintf(name, sizeof(name), "graph_%d_in_%d_%d", fg->index,
903 ist->file_index, ist->st->index);
904
905 if ((ret = avfilter_graph_create_filter(&ifilter->filter, abuffer_filt,
906 name, args.str, NULL,
907 fg->graph)) < 0)
908 return ret;
909 last_filter = ifilter->filter;
910
911 #define AUTO_INSERT_FILTER_INPUT(opt_name, filter_name, arg) do { \
912 AVFilterContext *filt_ctx; \
913 \
914 av_log(NULL, AV_LOG_INFO, opt_name " is forwarded to lavfi " \
915 "similarly to -af " filter_name "=%s.\n", arg); \
916 \
917 snprintf(name, sizeof(name), "graph_%d_%s_in_%d_%d", \
918 fg->index, filter_name, ist->file_index, ist->st->index); \
919 ret = avfilter_graph_create_filter(&filt_ctx, \
920 avfilter_get_by_name(filter_name), \
921 name, arg, NULL, fg->graph); \
922 if (ret < 0) \
923 return ret; \
924 \
925 ret = avfilter_link(last_filter, 0, filt_ctx, 0); \
926 if (ret < 0) \
927 return ret; \
928 \
929 last_filter = filt_ctx; \
930 } while (0)
931
932 if (audio_sync_method > 0) {
933 char args[256] = {0};
934
935 av_strlcatf(args, sizeof(args), "async=%d", audio_sync_method);
936 if (audio_drift_threshold != 0.1)
937 av_strlcatf(args, sizeof(args), ":min_hard_comp=%f", audio_drift_threshold);
938 if (!fg->reconfiguration)
939 av_strlcatf(args, sizeof(args), ":first_pts=0");
940 AUTO_INSERT_FILTER_INPUT("-async", "aresample", args);
941 }
942
943 // if (ost->audio_channels_mapped) {
944 // int i;
945 // AVBPrint pan_buf;
946 // av_bprint_init(&pan_buf, 256, 8192);
947 // av_bprintf(&pan_buf, "0x%"PRIx64,
948 // av_get_default_channel_layout(ost->audio_channels_mapped));
949 // for (i = 0; i < ost->audio_channels_mapped; i++)
950 // if (ost->audio_channels_map[i] != -1)
951 // av_bprintf(&pan_buf, ":c%d=c%d", i, ost->audio_channels_map[i]);
952 // AUTO_INSERT_FILTER_INPUT("-map_channel", "pan", pan_buf.str);
953 // av_bprint_finalize(&pan_buf, NULL);
954 // }
955
956 if (audio_volume != 256) {
957 char args[256];
958
959 av_log(NULL, AV_LOG_WARNING, "-vol has been deprecated. Use the volume "
960 "audio filter instead.\n");
961
962 snprintf(args, sizeof(args), "%f", audio_volume / 256.);
963 AUTO_INSERT_FILTER_INPUT("-vol", "volume", args);
964 }
965
966 snprintf(name, sizeof(name), "trim for input stream %d:%d",
967 ist->file_index, ist->st->index);
968 if (copy_ts) {
969 tsoffset = f->start_time == AV_NOPTS_VALUE ? 0 : f->start_time;
970 if (!start_at_zero && f->ctx->start_time != AV_NOPTS_VALUE)
971 tsoffset += f->ctx->start_time;
972 }
973 ret = insert_trim(((f->start_time == AV_NOPTS_VALUE) || !f->accurate_seek) ?
974 AV_NOPTS_VALUE : tsoffset, f->recording_time,
975 &last_filter, &pad_idx, name);
976 if (ret < 0)
977 return ret;
978
979 if ((ret = avfilter_link(last_filter, 0, in->filter_ctx, in->pad_idx)) < 0)
980 return ret;
981
982 return 0;
983 }
984
configure_input_filter(FilterGraph * fg,InputFilter * ifilter,AVFilterInOut * in)985 static int configure_input_filter(FilterGraph *fg, InputFilter *ifilter,
986 AVFilterInOut *in)
987 {
988 if (!ifilter->ist->dec) {
989 av_log(NULL, AV_LOG_ERROR,
990 "No decoder for stream #%d:%d, filtering impossible\n",
991 ifilter->ist->file_index, ifilter->ist->st->index);
992 return AVERROR_DECODER_NOT_FOUND;
993 }
994 switch (avfilter_pad_get_type(in->filter_ctx->input_pads, in->pad_idx)) {
995 case AVMEDIA_TYPE_VIDEO: return configure_input_video_filter(fg, ifilter, in);
996 case AVMEDIA_TYPE_AUDIO: return configure_input_audio_filter(fg, ifilter, in);
997 default: av_assert0(0);
998 }
999 }
1000
cleanup_filtergraph(FilterGraph * fg)1001 static void cleanup_filtergraph(FilterGraph *fg)
1002 {
1003 int i;
1004 for (i = 0; i < fg->nb_outputs; i++)
1005 fg->outputs[i]->filter = (AVFilterContext *)NULL;
1006 for (i = 0; i < fg->nb_inputs; i++)
1007 fg->inputs[i]->filter = (AVFilterContext *)NULL;
1008 avfilter_graph_free(&fg->graph);
1009 }
1010
configure_filtergraph(FilterGraph * fg)1011 int configure_filtergraph(FilterGraph *fg)
1012 {
1013 AVFilterInOut *inputs, *outputs, *cur;
1014 int ret, i, simple = filtergraph_is_simple(fg);
1015 const char *graph_desc = simple ? fg->outputs[0]->ost->avfilter :
1016 fg->graph_desc;
1017
1018 cleanup_filtergraph(fg);
1019 if (!(fg->graph = avfilter_graph_alloc()))
1020 return AVERROR(ENOMEM);
1021
1022 if (simple) {
1023 OutputStream *ost = fg->outputs[0]->ost;
1024 char args[512];
1025 AVDictionaryEntry *e = NULL;
1026
1027 fg->graph->nb_threads = filter_nbthreads;
1028
1029 args[0] = 0;
1030 while ((e = av_dict_get(ost->sws_dict, "", e,
1031 AV_DICT_IGNORE_SUFFIX))) {
1032 av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value);
1033 }
1034 if (strlen(args))
1035 args[strlen(args)-1] = 0;
1036 fg->graph->scale_sws_opts = av_strdup(args);
1037
1038 args[0] = 0;
1039 while ((e = av_dict_get(ost->swr_opts, "", e,
1040 AV_DICT_IGNORE_SUFFIX))) {
1041 av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value);
1042 }
1043 if (strlen(args))
1044 args[strlen(args)-1] = 0;
1045 av_opt_set(fg->graph, "aresample_swr_opts", args, 0);
1046
1047 args[0] = '\0';
1048 while ((e = av_dict_get(fg->outputs[0]->ost->resample_opts, "", e,
1049 AV_DICT_IGNORE_SUFFIX))) {
1050 av_strlcatf(args, sizeof(args), "%s=%s:", e->key, e->value);
1051 }
1052 if (strlen(args))
1053 args[strlen(args) - 1] = '\0';
1054
1055 e = av_dict_get(ost->encoder_opts, "threads", NULL, 0);
1056 if (e)
1057 av_opt_set(fg->graph, "threads", e->value, 0);
1058 } else {
1059 fg->graph->nb_threads = filter_complex_nbthreads;
1060 }
1061
1062 if ((ret = avfilter_graph_parse2(fg->graph, graph_desc, &inputs, &outputs)) < 0)
1063 goto fail;
1064
1065 ret = hw_device_setup_for_filter(fg);
1066 if (ret < 0)
1067 goto fail;
1068
1069 if (simple && (!inputs || inputs->next || !outputs || outputs->next)) {
1070 const char *num_inputs;
1071 const char *num_outputs;
1072 if (!outputs) {
1073 num_outputs = "0";
1074 } else if (outputs->next) {
1075 num_outputs = ">1";
1076 } else {
1077 num_outputs = "1";
1078 }
1079 if (!inputs) {
1080 num_inputs = "0";
1081 } else if (inputs->next) {
1082 num_inputs = ">1";
1083 } else {
1084 num_inputs = "1";
1085 }
1086 av_log(NULL, AV_LOG_ERROR, "Simple filtergraph '%s' was expected "
1087 "to have exactly 1 input and 1 output."
1088 " However, it had %s input(s) and %s output(s)."
1089 " Please adjust, or use a complex filtergraph (-filter_complex) instead.\n",
1090 graph_desc, num_inputs, num_outputs);
1091 ret = AVERROR(EINVAL);
1092 goto fail;
1093 }
1094
1095 for (cur = inputs, i = 0; cur; cur = cur->next, i++)
1096 if ((ret = configure_input_filter(fg, fg->inputs[i], cur)) < 0) {
1097 avfilter_inout_free(&inputs);
1098 avfilter_inout_free(&outputs);
1099 goto fail;
1100 }
1101 avfilter_inout_free(&inputs);
1102
1103 for (cur = outputs, i = 0; cur; cur = cur->next, i++)
1104 configure_output_filter(fg, fg->outputs[i], cur);
1105 avfilter_inout_free(&outputs);
1106
1107 if ((ret = avfilter_graph_config(fg->graph, NULL)) < 0)
1108 goto fail;
1109
1110 /* limit the lists of allowed formats to the ones selected, to
1111 * make sure they stay the same if the filtergraph is reconfigured later */
1112 for (i = 0; i < fg->nb_outputs; i++) {
1113 OutputFilter *ofilter = fg->outputs[i];
1114 AVFilterContext *sink = ofilter->filter;
1115
1116 ofilter->format = av_buffersink_get_format(sink);
1117
1118 ofilter->width = av_buffersink_get_w(sink);
1119 ofilter->height = av_buffersink_get_h(sink);
1120
1121 ofilter->sample_rate = av_buffersink_get_sample_rate(sink);
1122 ofilter->channel_layout = av_buffersink_get_channel_layout(sink);
1123 }
1124
1125 fg->reconfiguration = 1;
1126
1127 for (i = 0; i < fg->nb_outputs; i++) {
1128 OutputStream *ost = fg->outputs[i]->ost;
1129 if (!ost->enc) {
1130 /* identical to the same check in ffmpeg.c, needed because
1131 complex filter graphs are initialized earlier */
1132 av_log(NULL, AV_LOG_ERROR, "Encoder (codec %s) not found for output stream #%d:%d\n",
1133 avcodec_get_name(ost->st->codecpar->codec_id), ost->file_index, ost->index);
1134 ret = AVERROR(EINVAL);
1135 goto fail;
1136 }
1137 if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1138 !(ost->enc->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE))
1139 av_buffersink_set_frame_size(ost->filter->filter,
1140 ost->enc_ctx->frame_size);
1141 }
1142
1143 for (i = 0; i < fg->nb_inputs; i++) {
1144 while (av_fifo_size(fg->inputs[i]->frame_queue)) {
1145 AVFrame *tmp;
1146 av_fifo_generic_read(fg->inputs[i]->frame_queue, &tmp, sizeof(tmp), NULL);
1147 ret = av_buffersrc_add_frame(fg->inputs[i]->filter, tmp);
1148 av_frame_free(&tmp);
1149 if (ret < 0)
1150 goto fail;
1151 }
1152 }
1153
1154 /* send the EOFs for the finished inputs */
1155 for (i = 0; i < fg->nb_inputs; i++) {
1156 if (fg->inputs[i]->eof) {
1157 ret = av_buffersrc_add_frame(fg->inputs[i]->filter, NULL);
1158 if (ret < 0)
1159 goto fail;
1160 }
1161 }
1162
1163 /* process queued up subtitle packets */
1164 for (i = 0; i < fg->nb_inputs; i++) {
1165 InputStream *ist = fg->inputs[i]->ist;
1166 if (ist->sub2video.sub_queue && ist->sub2video.frame) {
1167 while (av_fifo_size(ist->sub2video.sub_queue)) {
1168 AVSubtitle tmp;
1169 av_fifo_generic_read(ist->sub2video.sub_queue, &tmp, sizeof(tmp), NULL);
1170 sub2video_update(ist, INT64_MIN, &tmp);
1171 avsubtitle_free(&tmp);
1172 }
1173 }
1174 }
1175
1176 return 0;
1177
1178 fail:
1179 cleanup_filtergraph(fg);
1180 return ret;
1181 }
1182
ifilter_parameters_from_frame(InputFilter * ifilter,const AVFrame * frame)1183 int ifilter_parameters_from_frame(InputFilter *ifilter, const AVFrame *frame)
1184 {
1185 av_buffer_unref(&ifilter->hw_frames_ctx);
1186
1187 ifilter->format = frame->format;
1188
1189 ifilter->width = frame->width;
1190 ifilter->height = frame->height;
1191 ifilter->sample_aspect_ratio = frame->sample_aspect_ratio;
1192
1193 ifilter->sample_rate = frame->sample_rate;
1194 ifilter->channels = frame->channels;
1195 ifilter->channel_layout = frame->channel_layout;
1196
1197 if (frame->hw_frames_ctx) {
1198 ifilter->hw_frames_ctx = av_buffer_ref(frame->hw_frames_ctx);
1199 if (!ifilter->hw_frames_ctx)
1200 return AVERROR(ENOMEM);
1201 }
1202
1203 return 0;
1204 }
1205
ist_in_filtergraph(FilterGraph * fg,InputStream * ist)1206 int ist_in_filtergraph(FilterGraph *fg, InputStream *ist)
1207 {
1208 int i;
1209 for (i = 0; i < fg->nb_inputs; i++)
1210 if (fg->inputs[i]->ist == ist)
1211 return 1;
1212 return 0;
1213 }
1214
filtergraph_is_simple(FilterGraph * fg)1215 int filtergraph_is_simple(FilterGraph *fg)
1216 {
1217 return !fg->graph_desc;
1218 }
1219