avconv: add a function for determining whether a filtergraph is simple
[libav.git] / avconv.c
1 /*
2 * avconv main
3 * Copyright (c) 2000-2011 The Libav developers
4 *
5 * This file is part of Libav.
6 *
7 * Libav is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * Libav is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #include "config.h"
23 #include <ctype.h>
24 #include <string.h>
25 #include <math.h>
26 #include <stdlib.h>
27 #include <errno.h>
28 #include <signal.h>
29 #include <limits.h>
30 #include <stdint.h>
31
32 #include "libavformat/avformat.h"
33 #include "libavdevice/avdevice.h"
34 #include "libswscale/swscale.h"
35 #include "libavresample/avresample.h"
36 #include "libavutil/opt.h"
37 #include "libavutil/channel_layout.h"
38 #include "libavutil/parseutils.h"
39 #include "libavutil/samplefmt.h"
40 #include "libavutil/fifo.h"
41 #include "libavutil/internal.h"
42 #include "libavutil/intreadwrite.h"
43 #include "libavutil/dict.h"
44 #include "libavutil/mathematics.h"
45 #include "libavutil/pixdesc.h"
46 #include "libavutil/avstring.h"
47 #include "libavutil/libm.h"
48 #include "libavutil/imgutils.h"
49 #include "libavutil/time.h"
50 #include "libavformat/os_support.h"
51
52 # include "libavfilter/avfilter.h"
53 # include "libavfilter/buffersrc.h"
54 # include "libavfilter/buffersink.h"
55
56 #if HAVE_SYS_RESOURCE_H
57 #include <sys/time.h>
58 #include <sys/types.h>
59 #include <sys/resource.h>
60 #elif HAVE_GETPROCESSTIMES
61 #include <windows.h>
62 #endif
63 #if HAVE_GETPROCESSMEMORYINFO
64 #include <windows.h>
65 #include <psapi.h>
66 #endif
67
68 #if HAVE_SYS_SELECT_H
69 #include <sys/select.h>
70 #endif
71
72 #if HAVE_PTHREADS
73 #include <pthread.h>
74 #endif
75
76 #include <time.h>
77
78 #include "avconv.h"
79 #include "cmdutils.h"
80
81 #include "libavutil/avassert.h"
82
83 const char program_name[] = "avconv";
84 const int program_birth_year = 2000;
85
86 static FILE *vstats_file;
87
88 static int nb_frames_drop = 0;
89
90
91
92 #if HAVE_PTHREADS
93 /* signal to input threads that they should exit; set by the main thread */
94 static int transcoding_finished;
95 #endif
96
97 InputStream **input_streams = NULL;
98 int nb_input_streams = 0;
99 InputFile **input_files = NULL;
100 int nb_input_files = 0;
101
102 OutputStream **output_streams = NULL;
103 int nb_output_streams = 0;
104 OutputFile **output_files = NULL;
105 int nb_output_files = 0;
106
107 FilterGraph **filtergraphs;
108 int nb_filtergraphs;
109
110 static void term_exit(void)
111 {
112 av_log(NULL, AV_LOG_QUIET, "");
113 }
114
115 static volatile int received_sigterm = 0;
116 static volatile int received_nb_signals = 0;
117
118 static void
119 sigterm_handler(int sig)
120 {
121 received_sigterm = sig;
122 received_nb_signals++;
123 term_exit();
124 }
125
126 static void term_init(void)
127 {
128 signal(SIGINT , sigterm_handler); /* Interrupt (ANSI). */
129 signal(SIGTERM, sigterm_handler); /* Termination (ANSI). */
130 #ifdef SIGXCPU
131 signal(SIGXCPU, sigterm_handler);
132 #endif
133 }
134
135 static int decode_interrupt_cb(void *ctx)
136 {
137 return received_nb_signals > 1;
138 }
139
140 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
141
142 static void avconv_cleanup(int ret)
143 {
144 int i, j;
145
146 for (i = 0; i < nb_filtergraphs; i++) {
147 FilterGraph *fg = filtergraphs[i];
148 avfilter_graph_free(&fg->graph);
149 for (j = 0; j < fg->nb_inputs; j++) {
150 av_freep(&fg->inputs[j]->name);
151 av_freep(&fg->inputs[j]);
152 }
153 av_freep(&fg->inputs);
154 for (j = 0; j < fg->nb_outputs; j++) {
155 av_freep(&fg->outputs[j]->name);
156 av_freep(&fg->outputs[j]);
157 }
158 av_freep(&fg->outputs);
159 av_freep(&fg->graph_desc);
160
161 av_freep(&filtergraphs[i]);
162 }
163 av_freep(&filtergraphs);
164
165 /* close files */
166 for (i = 0; i < nb_output_files; i++) {
167 OutputFile *of = output_files[i];
168 AVFormatContext *s = of->ctx;
169 if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE) && s->pb)
170 avio_close(s->pb);
171 avformat_free_context(s);
172 av_dict_free(&of->opts);
173
174 av_freep(&output_files[i]);
175 }
176 for (i = 0; i < nb_output_streams; i++) {
177 OutputStream *ost = output_streams[i];
178
179 for (j = 0; j < ost->nb_bitstream_filters; j++)
180 av_bsf_free(&ost->bsf_ctx[j]);
181 av_freep(&ost->bsf_ctx);
182 av_freep(&ost->bitstream_filters);
183
184 av_frame_free(&ost->filtered_frame);
185
186 av_parser_close(ost->parser);
187 avcodec_free_context(&ost->parser_avctx);
188
189 av_freep(&ost->forced_keyframes);
190 av_freep(&ost->avfilter);
191 av_freep(&ost->logfile_prefix);
192
193 avcodec_free_context(&ost->enc_ctx);
194
195 av_freep(&output_streams[i]);
196 }
197 for (i = 0; i < nb_input_files; i++) {
198 avformat_close_input(&input_files[i]->ctx);
199 av_freep(&input_files[i]);
200 }
201 for (i = 0; i < nb_input_streams; i++) {
202 InputStream *ist = input_streams[i];
203
204 av_frame_free(&ist->decoded_frame);
205 av_frame_free(&ist->filter_frame);
206 av_dict_free(&ist->decoder_opts);
207 av_freep(&ist->filters);
208 av_freep(&ist->hwaccel_device);
209
210 avcodec_free_context(&ist->dec_ctx);
211
212 av_freep(&input_streams[i]);
213 }
214
215 if (vstats_file)
216 fclose(vstats_file);
217 av_free(vstats_filename);
218
219 av_freep(&input_streams);
220 av_freep(&input_files);
221 av_freep(&output_streams);
222 av_freep(&output_files);
223
224 uninit_opts();
225
226 avformat_network_deinit();
227
228 if (received_sigterm) {
229 av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
230 (int) received_sigterm);
231 exit (255);
232 }
233 }
234
235 void assert_avoptions(AVDictionary *m)
236 {
237 AVDictionaryEntry *t;
238 if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
239 av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
240 exit_program(1);
241 }
242 }
243
244 static void abort_codec_experimental(AVCodec *c, int encoder)
245 {
246 const char *codec_string = encoder ? "encoder" : "decoder";
247 AVCodec *codec;
248 av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
249 "results.\nAdd '-strict experimental' if you want to use it.\n",
250 codec_string, c->name);
251 codec = encoder ? avcodec_find_encoder(c->id) : avcodec_find_decoder(c->id);
252 if (!(codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL))
253 av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
254 codec_string, codec->name);
255 exit_program(1);
256 }
257
258 static void write_packet(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
259 {
260 AVStream *st = ost->st;
261 int ret;
262
263 /*
264 * Audio encoders may split the packets -- #frames in != #packets out.
265 * But there is no reordering, so we can limit the number of output packets
266 * by simply dropping them here.
267 * Counting encoded video frames needs to be done separately because of
268 * reordering, see do_video_out()
269 */
270 if (!(st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && ost->encoding_needed)) {
271 if (ost->frame_number >= ost->max_frames) {
272 av_packet_unref(pkt);
273 return;
274 }
275 ost->frame_number++;
276 }
277 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
278 uint8_t *sd = av_packet_get_side_data(pkt, AV_PKT_DATA_QUALITY_FACTOR,
279 NULL);
280 ost->quality = sd ? *(int *)sd : -1;
281
282 if (ost->frame_rate.num) {
283 pkt->duration = av_rescale_q(1, av_inv_q(ost->frame_rate),
284 ost->st->time_base);
285 }
286 }
287
288 if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS) &&
289 ost->last_mux_dts != AV_NOPTS_VALUE &&
290 pkt->dts < ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT)) {
291 av_log(NULL, AV_LOG_WARNING, "Non-monotonous DTS in output stream "
292 "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
293 ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
294 if (exit_on_error) {
295 av_log(NULL, AV_LOG_FATAL, "aborting.\n");
296 exit_program(1);
297 }
298 av_log(NULL, AV_LOG_WARNING, "changing to %"PRId64". This may result "
299 "in incorrect timestamps in the output file.\n",
300 ost->last_mux_dts + 1);
301 pkt->dts = ost->last_mux_dts + 1;
302 if (pkt->pts != AV_NOPTS_VALUE)
303 pkt->pts = FFMAX(pkt->pts, pkt->dts);
304 }
305 ost->last_mux_dts = pkt->dts;
306
307 ost->data_size += pkt->size;
308 ost->packets_written++;
309
310 pkt->stream_index = ost->index;
311 ret = av_interleaved_write_frame(s, pkt);
312 if (ret < 0) {
313 print_error("av_interleaved_write_frame()", ret);
314 exit_program(1);
315 }
316 }
317
318 static void output_packet(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
319 {
320 int ret = 0;
321
322 /* apply the output bitstream filters, if any */
323 if (ost->nb_bitstream_filters) {
324 int idx;
325
326 ret = av_bsf_send_packet(ost->bsf_ctx[0], pkt);
327 if (ret < 0)
328 goto finish;
329
330 idx = 1;
331 while (idx) {
332 /* get a packet from the previous filter up the chain */
333 ret = av_bsf_receive_packet(ost->bsf_ctx[idx - 1], pkt);
334 if (ret == AVERROR(EAGAIN)) {
335 ret = 0;
336 idx--;
337 continue;
338 } else if (ret < 0)
339 goto finish;
340
341 /* send it to the next filter down the chain or to the muxer */
342 if (idx < ost->nb_bitstream_filters) {
343 ret = av_bsf_send_packet(ost->bsf_ctx[idx], pkt);
344 if (ret < 0)
345 goto finish;
346 idx++;
347 } else
348 write_packet(s, pkt, ost);
349 }
350 } else
351 write_packet(s, pkt, ost);
352
353 finish:
354 if (ret < 0 && ret != AVERROR_EOF) {
355 av_log(NULL, AV_LOG_FATAL, "Error applying bitstream filters to an output "
356 "packet for stream #%d:%d.\n", ost->file_index, ost->index);
357 exit_program(1);
358 }
359 }
360
361 static int check_recording_time(OutputStream *ost)
362 {
363 OutputFile *of = output_files[ost->file_index];
364
365 if (of->recording_time != INT64_MAX &&
366 av_compare_ts(ost->sync_opts - ost->first_pts, ost->enc_ctx->time_base, of->recording_time,
367 AV_TIME_BASE_Q) >= 0) {
368 ost->finished = 1;
369 return 0;
370 }
371 return 1;
372 }
373
374 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
375 AVFrame *frame)
376 {
377 AVCodecContext *enc = ost->enc_ctx;
378 AVPacket pkt;
379 int ret;
380
381 av_init_packet(&pkt);
382 pkt.data = NULL;
383 pkt.size = 0;
384
385 if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
386 frame->pts = ost->sync_opts;
387 ost->sync_opts = frame->pts + frame->nb_samples;
388
389 ost->samples_encoded += frame->nb_samples;
390 ost->frames_encoded++;
391
392 ret = avcodec_send_frame(enc, frame);
393 if (ret < 0)
394 goto error;
395
396 while (1) {
397 ret = avcodec_receive_packet(enc, &pkt);
398 if (ret == AVERROR(EAGAIN))
399 break;
400 if (ret < 0)
401 goto error;
402
403 av_packet_rescale_ts(&pkt, enc->time_base, ost->st->time_base);
404 output_packet(s, &pkt, ost);
405 }
406
407 return;
408 error:
409 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
410 exit_program(1);
411 }
412
413 static void do_subtitle_out(AVFormatContext *s,
414 OutputStream *ost,
415 InputStream *ist,
416 AVSubtitle *sub,
417 int64_t pts)
418 {
419 static uint8_t *subtitle_out = NULL;
420 int subtitle_out_max_size = 1024 * 1024;
421 int subtitle_out_size, nb, i;
422 AVCodecContext *enc;
423 AVPacket pkt;
424
425 if (pts == AV_NOPTS_VALUE) {
426 av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
427 if (exit_on_error)
428 exit_program(1);
429 return;
430 }
431
432 enc = ost->enc_ctx;
433
434 if (!subtitle_out) {
435 subtitle_out = av_malloc(subtitle_out_max_size);
436 }
437
438 /* Note: DVB subtitle need one packet to draw them and one other
439 packet to clear them */
440 /* XXX: signal it in the codec context ? */
441 if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
442 nb = 2;
443 else
444 nb = 1;
445
446 for (i = 0; i < nb; i++) {
447 ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
448 if (!check_recording_time(ost))
449 return;
450
451 sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
452 // start_display_time is required to be 0
453 sub->pts += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
454 sub->end_display_time -= sub->start_display_time;
455 sub->start_display_time = 0;
456
457 ost->frames_encoded++;
458
459 subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
460 subtitle_out_max_size, sub);
461 if (subtitle_out_size < 0) {
462 av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
463 exit_program(1);
464 }
465
466 av_init_packet(&pkt);
467 pkt.data = subtitle_out;
468 pkt.size = subtitle_out_size;
469 pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
470 if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
471 /* XXX: the pts correction is handled here. Maybe handling
472 it in the codec would be better */
473 if (i == 0)
474 pkt.pts += 90 * sub->start_display_time;
475 else
476 pkt.pts += 90 * sub->end_display_time;
477 }
478 output_packet(s, &pkt, ost);
479 }
480 }
481
482 static void do_video_out(AVFormatContext *s,
483 OutputStream *ost,
484 AVFrame *in_picture,
485 int *frame_size)
486 {
487 int ret, format_video_sync;
488 AVPacket pkt;
489 AVCodecContext *enc = ost->enc_ctx;
490
491 *frame_size = 0;
492
493 format_video_sync = video_sync_method;
494 if (format_video_sync == VSYNC_AUTO)
495 format_video_sync = (s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH :
496 (s->oformat->flags & AVFMT_VARIABLE_FPS) ? VSYNC_VFR : VSYNC_CFR;
497 if (format_video_sync != VSYNC_PASSTHROUGH &&
498 ost->frame_number &&
499 in_picture->pts != AV_NOPTS_VALUE &&
500 in_picture->pts < ost->sync_opts) {
501 nb_frames_drop++;
502 av_log(NULL, AV_LOG_WARNING,
503 "*** dropping frame %d from stream %d at ts %"PRId64"\n",
504 ost->frame_number, ost->st->index, in_picture->pts);
505 return;
506 }
507
508 if (in_picture->pts == AV_NOPTS_VALUE)
509 in_picture->pts = ost->sync_opts;
510 ost->sync_opts = in_picture->pts;
511
512
513 if (!ost->frame_number)
514 ost->first_pts = in_picture->pts;
515
516 av_init_packet(&pkt);
517 pkt.data = NULL;
518 pkt.size = 0;
519
520 if (ost->frame_number >= ost->max_frames)
521 return;
522
523 if (enc->flags & (AV_CODEC_FLAG_INTERLACED_DCT | AV_CODEC_FLAG_INTERLACED_ME) &&
524 ost->top_field_first >= 0)
525 in_picture->top_field_first = !!ost->top_field_first;
526
527 in_picture->quality = enc->global_quality;
528 in_picture->pict_type = 0;
529 if (ost->forced_kf_index < ost->forced_kf_count &&
530 in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
531 in_picture->pict_type = AV_PICTURE_TYPE_I;
532 ost->forced_kf_index++;
533 }
534
535 ost->frames_encoded++;
536
537 ret = avcodec_send_frame(enc, in_picture);
538 if (ret < 0)
539 goto error;
540
541 /*
542 * For video, there may be reordering, so we can't throw away frames on
543 * encoder flush, we need to limit them here, before they go into encoder.
544 */
545 ost->frame_number++;
546
547 while (1) {
548 ret = avcodec_receive_packet(enc, &pkt);
549 if (ret == AVERROR(EAGAIN))
550 break;
551 if (ret < 0)
552 goto error;
553
554 av_packet_rescale_ts(&pkt, enc->time_base, ost->st->time_base);
555 output_packet(s, &pkt, ost);
556 *frame_size = pkt.size;
557
558 /* if two pass, output log */
559 if (ost->logfile && enc->stats_out) {
560 fprintf(ost->logfile, "%s", enc->stats_out);
561 }
562
563 ost->sync_opts++;
564 }
565
566 return;
567 error:
568 av_assert0(ret != AVERROR(EAGAIN) && ret != AVERROR_EOF);
569 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
570 exit_program(1);
571 }
572
573 #if FF_API_CODED_FRAME && FF_API_ERROR_FRAME
574 static double psnr(double d)
575 {
576 return -10.0 * log(d) / log(10.0);
577 }
578 #endif
579
580 static void do_video_stats(OutputStream *ost, int frame_size)
581 {
582 AVCodecContext *enc;
583 int frame_number;
584 double ti1, bitrate, avg_bitrate;
585
586 /* this is executed just the first time do_video_stats is called */
587 if (!vstats_file) {
588 vstats_file = fopen(vstats_filename, "w");
589 if (!vstats_file) {
590 perror("fopen");
591 exit_program(1);
592 }
593 }
594
595 enc = ost->enc_ctx;
596 if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
597 frame_number = ost->frame_number;
598 fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number,
599 ost->quality / (float)FF_QP2LAMBDA);
600
601 #if FF_API_CODED_FRAME && FF_API_ERROR_FRAME
602 FF_DISABLE_DEPRECATION_WARNINGS
603 if (enc->flags & AV_CODEC_FLAG_PSNR)
604 fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
605 FF_ENABLE_DEPRECATION_WARNINGS
606 #endif
607
608 fprintf(vstats_file,"f_size= %6d ", frame_size);
609 /* compute pts value */
610 ti1 = ost->sync_opts * av_q2d(enc->time_base);
611 if (ti1 < 0.01)
612 ti1 = 0.01;
613
614 bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
615 avg_bitrate = (double)(ost->data_size * 8) / ti1 / 1000.0;
616 fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
617 (double)ost->data_size / 1024, ti1, bitrate, avg_bitrate);
618 #if FF_API_CODED_FRAME
619 FF_DISABLE_DEPRECATION_WARNINGS
620 fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
621 FF_ENABLE_DEPRECATION_WARNINGS
622 #endif
623 }
624 }
625
626 /*
627 * Read one frame for lavfi output for ost and encode it.
628 */
629 static int poll_filter(OutputStream *ost)
630 {
631 OutputFile *of = output_files[ost->file_index];
632 AVFrame *filtered_frame = NULL;
633 int frame_size, ret;
634
635 if (!ost->filtered_frame && !(ost->filtered_frame = av_frame_alloc())) {
636 return AVERROR(ENOMEM);
637 }
638 filtered_frame = ost->filtered_frame;
639
640 if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
641 !(ost->enc->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE))
642 ret = av_buffersink_get_samples(ost->filter->filter, filtered_frame,
643 ost->enc_ctx->frame_size);
644 else
645 ret = av_buffersink_get_frame(ost->filter->filter, filtered_frame);
646
647 if (ret < 0)
648 return ret;
649
650 if (filtered_frame->pts != AV_NOPTS_VALUE) {
651 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
652 filtered_frame->pts = av_rescale_q(filtered_frame->pts,
653 ost->filter->filter->inputs[0]->time_base,
654 ost->enc_ctx->time_base) -
655 av_rescale_q(start_time,
656 AV_TIME_BASE_Q,
657 ost->enc_ctx->time_base);
658 }
659
660 switch (ost->filter->filter->inputs[0]->type) {
661 case AVMEDIA_TYPE_VIDEO:
662 if (!ost->frame_aspect_ratio)
663 ost->enc_ctx->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
664
665 do_video_out(of->ctx, ost, filtered_frame, &frame_size);
666 if (vstats_filename && frame_size)
667 do_video_stats(ost, frame_size);
668 break;
669 case AVMEDIA_TYPE_AUDIO:
670 do_audio_out(of->ctx, ost, filtered_frame);
671 break;
672 default:
673 // TODO support subtitle filters
674 av_assert0(0);
675 }
676
677 av_frame_unref(filtered_frame);
678
679 return 0;
680 }
681
682 static void finish_output_stream(OutputStream *ost)
683 {
684 OutputFile *of = output_files[ost->file_index];
685 int i;
686
687 ost->finished = 1;
688
689 if (of->shortest) {
690 for (i = 0; i < of->ctx->nb_streams; i++)
691 output_streams[of->ost_index + i]->finished = 1;
692 }
693 }
694
695 /*
696 * Read as many frames from possible from lavfi and encode them.
697 *
698 * Always read from the active stream with the lowest timestamp. If no frames
699 * are available for it then return EAGAIN and wait for more input. This way we
700 * can use lavfi sources that generate unlimited amount of frames without memory
701 * usage exploding.
702 */
703 static int poll_filters(void)
704 {
705 int i, ret = 0;
706
707 while (ret >= 0 && !received_sigterm) {
708 OutputStream *ost = NULL;
709 int64_t min_pts = INT64_MAX;
710
711 /* choose output stream with the lowest timestamp */
712 for (i = 0; i < nb_output_streams; i++) {
713 int64_t pts = output_streams[i]->sync_opts;
714
715 if (!output_streams[i]->filter || output_streams[i]->finished)
716 continue;
717
718 pts = av_rescale_q(pts, output_streams[i]->enc_ctx->time_base,
719 AV_TIME_BASE_Q);
720 if (pts < min_pts) {
721 min_pts = pts;
722 ost = output_streams[i];
723 }
724 }
725
726 if (!ost)
727 break;
728
729 ret = poll_filter(ost);
730
731 if (ret == AVERROR_EOF) {
732 finish_output_stream(ost);
733 ret = 0;
734 } else if (ret == AVERROR(EAGAIN))
735 return 0;
736 }
737
738 return ret;
739 }
740
741 static void print_final_stats(int64_t total_size)
742 {
743 uint64_t video_size = 0, audio_size = 0, extra_size = 0, other_size = 0;
744 uint64_t data_size = 0;
745 float percent = -1.0;
746 int i, j;
747
748 for (i = 0; i < nb_output_streams; i++) {
749 OutputStream *ost = output_streams[i];
750 switch (ost->enc_ctx->codec_type) {
751 case AVMEDIA_TYPE_VIDEO: video_size += ost->data_size; break;
752 case AVMEDIA_TYPE_AUDIO: audio_size += ost->data_size; break;
753 default: other_size += ost->data_size; break;
754 }
755 extra_size += ost->enc_ctx->extradata_size;
756 data_size += ost->data_size;
757 }
758
759 if (data_size && total_size >= data_size)
760 percent = 100.0 * (total_size - data_size) / data_size;
761
762 av_log(NULL, AV_LOG_INFO, "\n");
763 av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB other streams:%1.0fkB global headers:%1.0fkB muxing overhead: ",
764 video_size / 1024.0,
765 audio_size / 1024.0,
766 other_size / 1024.0,
767 extra_size / 1024.0);
768 if (percent >= 0.0)
769 av_log(NULL, AV_LOG_INFO, "%f%%", percent);
770 else
771 av_log(NULL, AV_LOG_INFO, "unknown");
772 av_log(NULL, AV_LOG_INFO, "\n");
773
774 /* print verbose per-stream stats */
775 for (i = 0; i < nb_input_files; i++) {
776 InputFile *f = input_files[i];
777 uint64_t total_packets = 0, total_size = 0;
778
779 av_log(NULL, AV_LOG_VERBOSE, "Input file #%d (%s):\n",
780 i, f->ctx->filename);
781
782 for (j = 0; j < f->nb_streams; j++) {
783 InputStream *ist = input_streams[f->ist_index + j];
784 enum AVMediaType type = ist->dec_ctx->codec_type;
785
786 total_size += ist->data_size;
787 total_packets += ist->nb_packets;
788
789 av_log(NULL, AV_LOG_VERBOSE, " Input stream #%d:%d (%s): ",
790 i, j, media_type_string(type));
791 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets read (%"PRIu64" bytes); ",
792 ist->nb_packets, ist->data_size);
793
794 if (ist->decoding_needed) {
795 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames decoded",
796 ist->frames_decoded);
797 if (type == AVMEDIA_TYPE_AUDIO)
798 av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ist->samples_decoded);
799 av_log(NULL, AV_LOG_VERBOSE, "; ");
800 }
801
802 av_log(NULL, AV_LOG_VERBOSE, "\n");
803 }
804
805 av_log(NULL, AV_LOG_VERBOSE, " Total: %"PRIu64" packets (%"PRIu64" bytes) demuxed\n",
806 total_packets, total_size);
807 }
808
809 for (i = 0; i < nb_output_files; i++) {
810 OutputFile *of = output_files[i];
811 uint64_t total_packets = 0, total_size = 0;
812
813 av_log(NULL, AV_LOG_VERBOSE, "Output file #%d (%s):\n",
814 i, of->ctx->filename);
815
816 for (j = 0; j < of->ctx->nb_streams; j++) {
817 OutputStream *ost = output_streams[of->ost_index + j];
818 enum AVMediaType type = ost->enc_ctx->codec_type;
819
820 total_size += ost->data_size;
821 total_packets += ost->packets_written;
822
823 av_log(NULL, AV_LOG_VERBOSE, " Output stream #%d:%d (%s): ",
824 i, j, media_type_string(type));
825 if (ost->encoding_needed) {
826 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames encoded",
827 ost->frames_encoded);
828 if (type == AVMEDIA_TYPE_AUDIO)
829 av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ost->samples_encoded);
830 av_log(NULL, AV_LOG_VERBOSE, "; ");
831 }
832
833 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets muxed (%"PRIu64" bytes); ",
834 ost->packets_written, ost->data_size);
835
836 av_log(NULL, AV_LOG_VERBOSE, "\n");
837 }
838
839 av_log(NULL, AV_LOG_VERBOSE, " Total: %"PRIu64" packets (%"PRIu64" bytes) muxed\n",
840 total_packets, total_size);
841 }
842 }
843
844 static void print_report(int is_last_report, int64_t timer_start)
845 {
846 char buf[1024];
847 OutputStream *ost;
848 AVFormatContext *oc;
849 int64_t total_size;
850 AVCodecContext *enc;
851 int frame_number, vid, i;
852 double bitrate, ti1, pts;
853 static int64_t last_time = -1;
854 static int qp_histogram[52];
855
856 if (!print_stats && !is_last_report)
857 return;
858
859 if (!is_last_report) {
860 int64_t cur_time;
861 /* display the report every 0.5 seconds */
862 cur_time = av_gettime_relative();
863 if (last_time == -1) {
864 last_time = cur_time;
865 return;
866 }
867 if ((cur_time - last_time) < 500000)
868 return;
869 last_time = cur_time;
870 }
871
872
873 oc = output_files[0]->ctx;
874
875 total_size = avio_size(oc->pb);
876 if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
877 total_size = avio_tell(oc->pb);
878 if (total_size < 0) {
879 char errbuf[128];
880 av_strerror(total_size, errbuf, sizeof(errbuf));
881 av_log(NULL, AV_LOG_VERBOSE, "Bitrate not available, "
882 "avio_tell() failed: %s\n", errbuf);
883 total_size = 0;
884 }
885
886 buf[0] = '\0';
887 ti1 = 1e10;
888 vid = 0;
889 for (i = 0; i < nb_output_streams; i++) {
890 float q = -1;
891 ost = output_streams[i];
892 enc = ost->enc_ctx;
893 if (!ost->stream_copy)
894 q = ost->quality / (float) FF_QP2LAMBDA;
895
896 if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
897 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
898 }
899 if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
900 float t = (av_gettime_relative() - timer_start) / 1000000.0;
901
902 frame_number = ost->frame_number;
903 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
904 frame_number, (t > 1) ? (int)(frame_number / t + 0.5) : 0, q);
905 if (is_last_report)
906 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
907 if (qp_hist) {
908 int j;
909 int qp = lrintf(q);
910 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
911 qp_histogram[qp]++;
912 for (j = 0; j < 32; j++)
913 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
914 }
915
916 #if FF_API_CODED_FRAME && FF_API_ERROR_FRAME
917 FF_DISABLE_DEPRECATION_WARNINGS
918 if (enc->flags & AV_CODEC_FLAG_PSNR) {
919 int j;
920 double error, error_sum = 0;
921 double scale, scale_sum = 0;
922 char type[3] = { 'Y','U','V' };
923 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
924 for (j = 0; j < 3; j++) {
925 if (is_last_report) {
926 error = enc->error[j];
927 scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
928 } else {
929 error = enc->coded_frame->error[j];
930 scale = enc->width * enc->height * 255.0 * 255.0;
931 }
932 if (j)
933 scale /= 4;
934 error_sum += error;
935 scale_sum += scale;
936 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
937 }
938 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
939 }
940 FF_ENABLE_DEPRECATION_WARNINGS
941 #endif
942 vid = 1;
943 }
944 /* compute min output value */
945 pts = (double)ost->last_mux_dts * av_q2d(ost->st->time_base);
946 if ((pts < ti1) && (pts > 0))
947 ti1 = pts;
948 }
949 if (ti1 < 0.01)
950 ti1 = 0.01;
951
952 bitrate = (double)(total_size * 8) / ti1 / 1000.0;
953
954 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
955 "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
956 (double)total_size / 1024, ti1, bitrate);
957
958 if (nb_frames_drop)
959 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " drop=%d",
960 nb_frames_drop);
961
962 av_log(NULL, AV_LOG_INFO, "%s \r", buf);
963
964 fflush(stderr);
965
966 if (is_last_report)
967 print_final_stats(total_size);
968
969 }
970
971 static void flush_encoders(void)
972 {
973 int i, ret;
974
975 for (i = 0; i < nb_output_streams; i++) {
976 OutputStream *ost = output_streams[i];
977 AVCodecContext *enc = ost->enc_ctx;
978 AVFormatContext *os = output_files[ost->file_index]->ctx;
979 int stop_encoding = 0;
980
981 if (!ost->encoding_needed)
982 continue;
983
984 if (enc->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
985 continue;
986
987 if (enc->codec_type != AVMEDIA_TYPE_VIDEO && enc->codec_type != AVMEDIA_TYPE_AUDIO)
988 continue;
989
990 avcodec_send_frame(enc, NULL);
991
992 for (;;) {
993 const char *desc = NULL;
994
995 switch (enc->codec_type) {
996 case AVMEDIA_TYPE_AUDIO:
997 desc = "Audio";
998 break;
999 case AVMEDIA_TYPE_VIDEO:
1000 desc = "Video";
1001 break;
1002 default:
1003 av_assert0(0);
1004 }
1005
1006 if (1) {
1007 AVPacket pkt;
1008 av_init_packet(&pkt);
1009 pkt.data = NULL;
1010 pkt.size = 0;
1011
1012 ret = avcodec_receive_packet(enc, &pkt);
1013 if (ret < 0 && ret != AVERROR_EOF) {
1014 av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1015 exit_program(1);
1016 }
1017 if (ost->logfile && enc->stats_out) {
1018 fprintf(ost->logfile, "%s", enc->stats_out);
1019 }
1020 if (ret == AVERROR_EOF) {
1021 stop_encoding = 1;
1022 break;
1023 }
1024 av_packet_rescale_ts(&pkt, enc->time_base, ost->st->time_base);
1025 output_packet(os, &pkt, ost);
1026 }
1027
1028 if (stop_encoding)
1029 break;
1030 }
1031 }
1032 }
1033
1034 /*
1035 * Check whether a packet from ist should be written into ost at this time
1036 */
1037 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1038 {
1039 OutputFile *of = output_files[ost->file_index];
1040 int ist_index = input_files[ist->file_index]->ist_index + ist->st->index;
1041
1042 if (ost->source_index != ist_index)
1043 return 0;
1044
1045 if (of->start_time != AV_NOPTS_VALUE && ist->last_dts < of->start_time)
1046 return 0;
1047
1048 return 1;
1049 }
1050
1051 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1052 {
1053 OutputFile *of = output_files[ost->file_index];
1054 InputFile *f = input_files [ist->file_index];
1055 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1056 int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1057 AVPacket opkt;
1058
1059 av_init_packet(&opkt);
1060
1061 if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1062 !ost->copy_initial_nonkeyframes)
1063 return;
1064
1065 if (of->recording_time != INT64_MAX &&
1066 ist->last_dts >= of->recording_time + start_time) {
1067 ost->finished = 1;
1068 return;
1069 }
1070
1071 if (f->recording_time != INT64_MAX) {
1072 start_time = f->ctx->start_time;
1073 if (f->start_time != AV_NOPTS_VALUE)
1074 start_time += f->start_time;
1075 if (ist->last_dts >= f->recording_time + start_time) {
1076 ost->finished = 1;
1077 return;
1078 }
1079 }
1080
1081 /* force the input stream PTS */
1082 if (ost->enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO)
1083 ost->sync_opts++;
1084
1085 if (pkt->pts != AV_NOPTS_VALUE)
1086 opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1087 else
1088 opkt.pts = AV_NOPTS_VALUE;
1089
1090 if (pkt->dts == AV_NOPTS_VALUE)
1091 opkt.dts = av_rescale_q(ist->last_dts, AV_TIME_BASE_Q, ost->st->time_base);
1092 else
1093 opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1094 opkt.dts -= ost_tb_start_time;
1095
1096 opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1097 opkt.flags = pkt->flags;
1098
1099 // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1100 if ( ost->enc_ctx->codec_id != AV_CODEC_ID_H264
1101 && ost->enc_ctx->codec_id != AV_CODEC_ID_MPEG1VIDEO
1102 && ost->enc_ctx->codec_id != AV_CODEC_ID_MPEG2VIDEO
1103 && ost->enc_ctx->codec_id != AV_CODEC_ID_VC1
1104 ) {
1105 if (av_parser_change(ost->parser, ost->parser_avctx,
1106 &opkt.data, &opkt.size,
1107 pkt->data, pkt->size,
1108 pkt->flags & AV_PKT_FLAG_KEY)) {
1109 opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1110 if (!opkt.buf)
1111 exit_program(1);
1112 }
1113 } else {
1114 opkt.data = pkt->data;
1115 opkt.size = pkt->size;
1116 }
1117
1118 output_packet(of->ctx, &opkt, ost);
1119 }
1120
1121 // This does not quite work like avcodec_decode_audio4/avcodec_decode_video2.
1122 // There is the following difference: if you got a frame, you must call
1123 // it again with pkt=NULL. pkt==NULL is treated differently from pkt.size==0
1124 // (pkt==NULL means get more output, pkt.size==0 is a flush/drain packet)
1125 static int decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *pkt)
1126 {
1127 int ret;
1128
1129 *got_frame = 0;
1130
1131 if (pkt) {
1132 ret = avcodec_send_packet(avctx, pkt);
1133 // In particular, we don't expect AVERROR(EAGAIN), because we read all
1134 // decoded frames with avcodec_receive_frame() until done.
1135 if (ret < 0)
1136 return ret == AVERROR_EOF ? 0 : ret;
1137 }
1138
1139 ret = avcodec_receive_frame(avctx, frame);
1140 if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
1141 return ret;
1142 if (ret >= 0)
1143 *got_frame = 1;
1144
1145 return 0;
1146 }
1147
1148 int guess_input_channel_layout(InputStream *ist)
1149 {
1150 AVCodecContext *dec = ist->dec_ctx;
1151
1152 if (!dec->channel_layout) {
1153 char layout_name[256];
1154
1155 dec->channel_layout = av_get_default_channel_layout(dec->channels);
1156 if (!dec->channel_layout)
1157 return 0;
1158 av_get_channel_layout_string(layout_name, sizeof(layout_name),
1159 dec->channels, dec->channel_layout);
1160 av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for Input Stream "
1161 "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1162 }
1163 return 1;
1164 }
1165
1166 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1167 {
1168 AVFrame *decoded_frame, *f;
1169 AVCodecContext *avctx = ist->dec_ctx;
1170 int i, ret, err = 0, resample_changed;
1171
1172 if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1173 return AVERROR(ENOMEM);
1174 if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1175 return AVERROR(ENOMEM);
1176 decoded_frame = ist->decoded_frame;
1177
1178 ret = decode(avctx, decoded_frame, got_output, pkt);
1179 if (!*got_output || ret < 0)
1180 return ret;
1181
1182 ist->samples_decoded += decoded_frame->nb_samples;
1183 ist->frames_decoded++;
1184
1185 /* if the decoder provides a pts, use it instead of the last packet pts.
1186 the decoder could be delaying output by a packet or more. */
1187 if (decoded_frame->pts != AV_NOPTS_VALUE)
1188 ist->next_dts = decoded_frame->pts;
1189 else if (pkt && pkt->pts != AV_NOPTS_VALUE) {
1190 decoded_frame->pts = pkt->pts;
1191 }
1192
1193 resample_changed = ist->resample_sample_fmt != decoded_frame->format ||
1194 ist->resample_channels != avctx->channels ||
1195 ist->resample_channel_layout != decoded_frame->channel_layout ||
1196 ist->resample_sample_rate != decoded_frame->sample_rate;
1197 if (resample_changed) {
1198 char layout1[64], layout2[64];
1199
1200 if (!guess_input_channel_layout(ist)) {
1201 av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1202 "layout for Input Stream #%d.%d\n", ist->file_index,
1203 ist->st->index);
1204 exit_program(1);
1205 }
1206 decoded_frame->channel_layout = avctx->channel_layout;
1207
1208 av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1209 ist->resample_channel_layout);
1210 av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1211 decoded_frame->channel_layout);
1212
1213 av_log(NULL, AV_LOG_INFO,
1214 "Input stream #%d:%d frame changed from rate:%d fmt:%s ch:%d chl:%s to rate:%d fmt:%s ch:%d chl:%s\n",
1215 ist->file_index, ist->st->index,
1216 ist->resample_sample_rate, av_get_sample_fmt_name(ist->resample_sample_fmt),
1217 ist->resample_channels, layout1,
1218 decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1219 avctx->channels, layout2);
1220
1221 ist->resample_sample_fmt = decoded_frame->format;
1222 ist->resample_sample_rate = decoded_frame->sample_rate;
1223 ist->resample_channel_layout = decoded_frame->channel_layout;
1224 ist->resample_channels = avctx->channels;
1225
1226 for (i = 0; i < nb_filtergraphs; i++)
1227 if (ist_in_filtergraph(filtergraphs[i], ist) &&
1228 configure_filtergraph(filtergraphs[i]) < 0) {
1229 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1230 exit_program(1);
1231 }
1232 }
1233
1234 if (decoded_frame->pts != AV_NOPTS_VALUE)
1235 decoded_frame->pts = av_rescale_q(decoded_frame->pts,
1236 ist->st->time_base,
1237 (AVRational){1, avctx->sample_rate});
1238 ist->nb_samples = decoded_frame->nb_samples;
1239 for (i = 0; i < ist->nb_filters; i++) {
1240 if (i < ist->nb_filters - 1) {
1241 f = ist->filter_frame;
1242 err = av_frame_ref(f, decoded_frame);
1243 if (err < 0)
1244 break;
1245 } else
1246 f = decoded_frame;
1247
1248 err = av_buffersrc_add_frame(ist->filters[i]->filter, f);
1249 if (err < 0)
1250 break;
1251 }
1252
1253 av_frame_unref(ist->filter_frame);
1254 av_frame_unref(decoded_frame);
1255 return err < 0 ? err : ret;
1256 }
1257
1258 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1259 {
1260 AVFrame *decoded_frame, *f;
1261 int i, ret = 0, err = 0, resample_changed;
1262
1263 if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1264 return AVERROR(ENOMEM);
1265 if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1266 return AVERROR(ENOMEM);
1267 decoded_frame = ist->decoded_frame;
1268
1269 ret = decode(ist->dec_ctx, decoded_frame, got_output, pkt);
1270 if (!*got_output || ret < 0)
1271 return ret;
1272
1273 ist->frames_decoded++;
1274
1275 if (ist->hwaccel_retrieve_data && decoded_frame->format == ist->hwaccel_pix_fmt) {
1276 err = ist->hwaccel_retrieve_data(ist->dec_ctx, decoded_frame);
1277 if (err < 0)
1278 goto fail;
1279 }
1280 ist->hwaccel_retrieved_pix_fmt = decoded_frame->format;
1281
1282 decoded_frame->pts = guess_correct_pts(&ist->pts_ctx, decoded_frame->pkt_pts,
1283 decoded_frame->pkt_dts);
1284
1285 if (ist->st->sample_aspect_ratio.num)
1286 decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1287
1288 resample_changed = ist->resample_width != decoded_frame->width ||
1289 ist->resample_height != decoded_frame->height ||
1290 ist->resample_pix_fmt != decoded_frame->format;
1291 if (resample_changed) {
1292 av_log(NULL, AV_LOG_INFO,
1293 "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1294 ist->file_index, ist->st->index,
1295 ist->resample_width, ist->resample_height, av_get_pix_fmt_name(ist->resample_pix_fmt),
1296 decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1297
1298 ret = poll_filters();
1299 if (ret < 0 && ret != AVERROR_EOF) {
1300 char errbuf[128];
1301 av_strerror(ret, errbuf, sizeof(errbuf));
1302
1303 av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n", errbuf);
1304 }
1305
1306 ist->resample_width = decoded_frame->width;
1307 ist->resample_height = decoded_frame->height;
1308 ist->resample_pix_fmt = decoded_frame->format;
1309
1310 for (i = 0; i < nb_filtergraphs; i++)
1311 if (ist_in_filtergraph(filtergraphs[i], ist) &&
1312 configure_filtergraph(filtergraphs[i]) < 0) {
1313 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1314 exit_program(1);
1315 }
1316 }
1317
1318 for (i = 0; i < ist->nb_filters; i++) {
1319 if (i < ist->nb_filters - 1) {
1320 f = ist->filter_frame;
1321 err = av_frame_ref(f, decoded_frame);
1322 if (err < 0)
1323 break;
1324 } else
1325 f = decoded_frame;
1326
1327 err = av_buffersrc_add_frame(ist->filters[i]->filter, f);
1328 if (err < 0)
1329 break;
1330 }
1331
1332 fail:
1333 av_frame_unref(ist->filter_frame);
1334 av_frame_unref(decoded_frame);
1335 return err < 0 ? err : ret;
1336 }
1337
1338 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1339 {
1340 AVSubtitle subtitle;
1341 int i, ret = avcodec_decode_subtitle2(ist->dec_ctx,
1342 &subtitle, got_output, pkt);
1343 if (ret < 0)
1344 return ret;
1345 if (!*got_output)
1346 return ret;
1347
1348 ist->frames_decoded++;
1349
1350 for (i = 0; i < nb_output_streams; i++) {
1351 OutputStream *ost = output_streams[i];
1352
1353 if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1354 continue;
1355
1356 do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pkt->pts);
1357 }
1358
1359 avsubtitle_free(&subtitle);
1360 return ret;
1361 }
1362
1363 static int send_filter_eof(InputStream *ist)
1364 {
1365 int i, ret;
1366 for (i = 0; i < ist->nb_filters; i++) {
1367 ret = av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1368 if (ret < 0)
1369 return ret;
1370 }
1371 return 0;
1372 }
1373
1374 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1375 static void process_input_packet(InputStream *ist, const AVPacket *pkt, int no_eof)
1376 {
1377 int i;
1378 int repeating = 0;
1379 AVPacket avpkt;
1380
1381 if (ist->next_dts == AV_NOPTS_VALUE)
1382 ist->next_dts = ist->last_dts;
1383
1384 if (!pkt) {
1385 /* EOF handling */
1386 av_init_packet(&avpkt);
1387 avpkt.data = NULL;
1388 avpkt.size = 0;
1389 } else {
1390 avpkt = *pkt;
1391 }
1392
1393 if (pkt && pkt->dts != AV_NOPTS_VALUE)
1394 ist->next_dts = ist->last_dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1395
1396 // while we have more to decode or while the decoder did output something on EOF
1397 while (ist->decoding_needed && (!pkt || avpkt.size > 0)) {
1398 int ret = 0;
1399 int got_output = 0;
1400
1401 if (!repeating)
1402 ist->last_dts = ist->next_dts;
1403
1404 switch (ist->dec_ctx->codec_type) {
1405 case AVMEDIA_TYPE_AUDIO:
1406 ret = decode_audio (ist, repeating ? NULL : &avpkt, &got_output);
1407 break;
1408 case AVMEDIA_TYPE_VIDEO:
1409 ret = decode_video (ist, repeating ? NULL : &avpkt, &got_output);
1410 if (repeating && !got_output)
1411 ;
1412 else if (pkt && pkt->duration)
1413 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1414 else if (ist->st->avg_frame_rate.num)
1415 ist->next_dts += av_rescale_q(1, av_inv_q(ist->st->avg_frame_rate),
1416 AV_TIME_BASE_Q);
1417 else if (ist->dec_ctx->framerate.num != 0) {
1418 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 :
1419 ist->dec_ctx->ticks_per_frame;
1420 ist->next_dts += av_rescale_q(ticks, ist->dec_ctx->framerate, AV_TIME_BASE_Q);
1421 }
1422 break;
1423 case AVMEDIA_TYPE_SUBTITLE:
1424 if (repeating)
1425 break;
1426 ret = transcode_subtitles(ist, &avpkt, &got_output);
1427 break;
1428 default:
1429 return;
1430 }
1431
1432 if (ret < 0) {
1433 av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
1434 ist->file_index, ist->st->index);
1435 if (exit_on_error)
1436 exit_program(1);
1437 break;
1438 }
1439
1440 if (!got_output)
1441 break;
1442
1443 repeating = 1;
1444 }
1445
1446 /* after flushing, send an EOF on all the filter inputs attached to the stream */
1447 /* except when looping we need to flush but not to send an EOF */
1448 if (!pkt && ist->decoding_needed && !no_eof) {
1449 int ret = send_filter_eof(ist);
1450 if (ret < 0) {
1451 av_log(NULL, AV_LOG_FATAL, "Error marking filters as finished\n");
1452 exit_program(1);
1453 }
1454 }
1455
1456 /* handle stream copy */
1457 if (!ist->decoding_needed) {
1458 ist->last_dts = ist->next_dts;
1459 switch (ist->dec_ctx->codec_type) {
1460 case AVMEDIA_TYPE_AUDIO:
1461 ist->next_dts += ((int64_t)AV_TIME_BASE * ist->dec_ctx->frame_size) /
1462 ist->dec_ctx->sample_rate;
1463 break;
1464 case AVMEDIA_TYPE_VIDEO:
1465 if (ist->dec_ctx->framerate.num != 0) {
1466 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->dec_ctx->ticks_per_frame;
1467 ist->next_dts += ((int64_t)AV_TIME_BASE *
1468 ist->dec_ctx->framerate.den * ticks) /
1469 ist->dec_ctx->framerate.num;
1470 }
1471 break;
1472 }
1473 }
1474 for (i = 0; pkt && i < nb_output_streams; i++) {
1475 OutputStream *ost = output_streams[i];
1476
1477 if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1478 continue;
1479
1480 do_streamcopy(ist, ost, pkt);
1481 }
1482
1483 return;
1484 }
1485
1486 static void print_sdp(void)
1487 {
1488 char sdp[16384];
1489 int i;
1490 AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1491
1492 if (!avc)
1493 exit_program(1);
1494 for (i = 0; i < nb_output_files; i++)
1495 avc[i] = output_files[i]->ctx;
1496
1497 av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1498 printf("SDP:\n%s\n", sdp);
1499 fflush(stdout);
1500 av_freep(&avc);
1501 }
1502
1503 static const HWAccel *get_hwaccel(enum AVPixelFormat pix_fmt)
1504 {
1505 int i;
1506 for (i = 0; hwaccels[i].name; i++)
1507 if (hwaccels[i].pix_fmt == pix_fmt)
1508 return &hwaccels[i];
1509 return NULL;
1510 }
1511
1512 static enum AVPixelFormat get_format(AVCodecContext *s, const enum AVPixelFormat *pix_fmts)
1513 {
1514 InputStream *ist = s->opaque;
1515 const enum AVPixelFormat *p;
1516 int ret;
1517
1518 for (p = pix_fmts; *p != -1; p++) {
1519 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(*p);
1520 const HWAccel *hwaccel;
1521
1522 if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
1523 break;
1524
1525 hwaccel = get_hwaccel(*p);
1526 if (!hwaccel ||
1527 (ist->active_hwaccel_id && ist->active_hwaccel_id != hwaccel->id) ||
1528 (ist->hwaccel_id != HWACCEL_AUTO && ist->hwaccel_id != hwaccel->id))
1529 continue;
1530
1531 ret = hwaccel->init(s);
1532 if (ret < 0) {
1533 if (ist->hwaccel_id == hwaccel->id) {
1534 av_log(NULL, AV_LOG_FATAL,
1535 "%s hwaccel requested for input stream #%d:%d, "
1536 "but cannot be initialized.\n", hwaccel->name,
1537 ist->file_index, ist->st->index);
1538 return AV_PIX_FMT_NONE;
1539 }
1540 continue;
1541 }
1542 ist->active_hwaccel_id = hwaccel->id;
1543 ist->hwaccel_pix_fmt = *p;
1544 break;
1545 }
1546
1547 return *p;
1548 }
1549
1550 static int get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
1551 {
1552 InputStream *ist = s->opaque;
1553
1554 if (ist->hwaccel_get_buffer && frame->format == ist->hwaccel_pix_fmt)
1555 return ist->hwaccel_get_buffer(s, frame, flags);
1556
1557 return avcodec_default_get_buffer2(s, frame, flags);
1558 }
1559
1560 static int init_input_stream(int ist_index, char *error, int error_len)
1561 {
1562 int ret;
1563 InputStream *ist = input_streams[ist_index];
1564 if (ist->decoding_needed) {
1565 AVCodec *codec = ist->dec;
1566 if (!codec) {
1567 snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d:%d",
1568 ist->dec_ctx->codec_id, ist->file_index, ist->st->index);
1569 return AVERROR(EINVAL);
1570 }
1571
1572 ist->dec_ctx->opaque = ist;
1573 ist->dec_ctx->get_format = get_format;
1574 ist->dec_ctx->get_buffer2 = get_buffer;
1575 ist->dec_ctx->thread_safe_callbacks = 1;
1576
1577 av_opt_set_int(ist->dec_ctx, "refcounted_frames", 1, 0);
1578
1579 if (!av_dict_get(ist->decoder_opts, "threads", NULL, 0))
1580 av_dict_set(&ist->decoder_opts, "threads", "auto", 0);
1581 if ((ret = avcodec_open2(ist->dec_ctx, codec, &ist->decoder_opts)) < 0) {
1582 char errbuf[128];
1583 if (ret == AVERROR_EXPERIMENTAL)
1584 abort_codec_experimental(codec, 0);
1585
1586 av_strerror(ret, errbuf, sizeof(errbuf));
1587
1588 snprintf(error, error_len,
1589 "Error while opening decoder for input stream "
1590 "#%d:%d : %s",
1591 ist->file_index, ist->st->index, errbuf);
1592 return ret;
1593 }
1594 assert_avoptions(ist->decoder_opts);
1595 }
1596
1597 ist->last_dts = ist->st->avg_frame_rate.num ? - ist->dec_ctx->has_b_frames * AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
1598 ist->next_dts = AV_NOPTS_VALUE;
1599 init_pts_correction(&ist->pts_ctx);
1600
1601 return 0;
1602 }
1603
1604 static InputStream *get_input_stream(OutputStream *ost)
1605 {
1606 if (ost->source_index >= 0)
1607 return input_streams[ost->source_index];
1608
1609 if (ost->filter) {
1610 FilterGraph *fg = ost->filter->graph;
1611 int i;
1612
1613 for (i = 0; i < fg->nb_inputs; i++)
1614 if (fg->inputs[i]->ist->dec_ctx->codec_type == ost->enc_ctx->codec_type)
1615 return fg->inputs[i]->ist;
1616 }
1617
1618 return NULL;
1619 }
1620
1621 static int init_output_bsfs(OutputStream *ost)
1622 {
1623 AVBSFContext *ctx;
1624 int i, ret;
1625
1626 if (!ost->nb_bitstream_filters)
1627 return 0;
1628
1629 ost->bsf_ctx = av_mallocz_array(ost->nb_bitstream_filters, sizeof(*ost->bsf_ctx));
1630 if (!ost->bsf_ctx)
1631 return AVERROR(ENOMEM);
1632
1633 for (i = 0; i < ost->nb_bitstream_filters; i++) {
1634 ret = av_bsf_alloc(ost->bitstream_filters[i], &ctx);
1635 if (ret < 0) {
1636 av_log(NULL, AV_LOG_ERROR, "Error allocating a bitstream filter context\n");
1637 return ret;
1638 }
1639 ost->bsf_ctx[i] = ctx;
1640
1641 ret = avcodec_parameters_copy(ctx->par_in,
1642 i ? ost->bsf_ctx[i - 1]->par_out : ost->st->codecpar);
1643 if (ret < 0)
1644 return ret;
1645
1646 ctx->time_base_in = i ? ost->bsf_ctx[i - 1]->time_base_out : ost->st->time_base;
1647
1648 ret = av_bsf_init(ctx);
1649 if (ret < 0) {
1650 av_log(NULL, AV_LOG_ERROR, "Error initializing bitstream filter: %s\n",
1651 ost->bitstream_filters[i]->name);
1652 return ret;
1653 }
1654 }
1655
1656 ctx = ost->bsf_ctx[ost->nb_bitstream_filters - 1];
1657 ret = avcodec_parameters_copy(ost->st->codecpar, ctx->par_out);
1658 if (ret < 0)
1659 return ret;
1660
1661 ost->st->time_base = ctx->time_base_out;
1662
1663 return 0;
1664 }
1665
1666 static int init_output_stream(OutputStream *ost, char *error, int error_len)
1667 {
1668 int ret = 0;
1669
1670 if (ost->encoding_needed) {
1671 AVCodec *codec = ost->enc;
1672 AVCodecContext *dec = NULL;
1673 InputStream *ist;
1674
1675 if ((ist = get_input_stream(ost)))
1676 dec = ist->dec_ctx;
1677 if (dec && dec->subtitle_header) {
1678 ost->enc_ctx->subtitle_header = av_malloc(dec->subtitle_header_size);
1679 if (!ost->enc_ctx->subtitle_header)
1680 return AVERROR(ENOMEM);
1681 memcpy(ost->enc_ctx->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
1682 ost->enc_ctx->subtitle_header_size = dec->subtitle_header_size;
1683 }
1684 if (!av_dict_get(ost->encoder_opts, "threads", NULL, 0))
1685 av_dict_set(&ost->encoder_opts, "threads", "auto", 0);
1686
1687 if (ost->filter && ost->filter->filter->inputs[0]->hw_frames_ctx) {
1688 ost->enc_ctx->hw_frames_ctx = av_buffer_ref(ost->filter->filter->inputs[0]->hw_frames_ctx);
1689 if (!ost->enc_ctx->hw_frames_ctx)
1690 return AVERROR(ENOMEM);
1691 }
1692
1693 if ((ret = avcodec_open2(ost->enc_ctx, codec, &ost->encoder_opts)) < 0) {
1694 if (ret == AVERROR_EXPERIMENTAL)
1695 abort_codec_experimental(codec, 1);
1696 snprintf(error, error_len,
1697 "Error while opening encoder for output stream #%d:%d - "
1698 "maybe incorrect parameters such as bit_rate, rate, width or height",
1699 ost->file_index, ost->index);
1700 return ret;
1701 }
1702 assert_avoptions(ost->encoder_opts);
1703 if (ost->enc_ctx->bit_rate && ost->enc_ctx->bit_rate < 1000)
1704 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
1705 "It takes bits/s as argument, not kbits/s\n");
1706
1707 ret = avcodec_parameters_from_context(ost->st->codecpar, ost->enc_ctx);
1708 if (ret < 0) {
1709 av_log(NULL, AV_LOG_FATAL,
1710 "Error initializing the output stream codec context.\n");
1711 exit_program(1);
1712 }
1713
1714 if (ost->enc_ctx->nb_coded_side_data) {
1715 int i;
1716
1717 ost->st->side_data = av_realloc_array(NULL, ost->enc_ctx->nb_coded_side_data,
1718 sizeof(*ost->st->side_data));
1719 if (!ost->st->side_data)
1720 return AVERROR(ENOMEM);
1721
1722 for (i = 0; i < ost->enc_ctx->nb_coded_side_data; i++) {
1723 const AVPacketSideData *sd_src = &ost->enc_ctx->coded_side_data[i];
1724 AVPacketSideData *sd_dst = &ost->st->side_data[i];
1725
1726 sd_dst->data = av_malloc(sd_src->size);
1727 if (!sd_dst->data)
1728 return AVERROR(ENOMEM);
1729 memcpy(sd_dst->data, sd_src->data, sd_src->size);
1730 sd_dst->size = sd_src->size;
1731 sd_dst->type = sd_src->type;
1732 ost->st->nb_side_data++;
1733 }
1734 }
1735
1736 ost->st->time_base = ost->enc_ctx->time_base;
1737 } else {
1738 ret = av_opt_set_dict(ost->enc_ctx, &ost->encoder_opts);
1739 if (ret < 0)
1740 return ret;
1741
1742 /*
1743 * FIXME: will the codec context used by the parser during streamcopy
1744 * This should go away with the new parser API.
1745 */
1746 ret = avcodec_parameters_to_context(ost->parser_avctx, ost->st->codecpar);
1747 if (ret < 0)
1748 return ret;
1749 }
1750
1751 /* initialize bitstream filters for the output stream
1752 * needs to be done here, because the codec id for streamcopy is not
1753 * known until now */
1754 ret = init_output_bsfs(ost);
1755 if (ret < 0)
1756 return ret;
1757
1758 return ret;
1759 }
1760
1761 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1762 AVCodecContext *avctx)
1763 {
1764 char *p;
1765 int n = 1, i;
1766 int64_t t;
1767
1768 for (p = kf; *p; p++)
1769 if (*p == ',')
1770 n++;
1771 ost->forced_kf_count = n;
1772 ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1773 if (!ost->forced_kf_pts) {
1774 av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1775 exit_program(1);
1776 }
1777
1778 p = kf;
1779 for (i = 0; i < n; i++) {
1780 char *next = strchr(p, ',');
1781
1782 if (next)
1783 *next++ = 0;
1784
1785 t = parse_time_or_die("force_key_frames", p, 1);
1786 ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1787
1788 p = next;
1789 }
1790 }
1791
1792 static void set_encoder_id(OutputFile *of, OutputStream *ost)
1793 {
1794 AVDictionaryEntry *e;
1795
1796 uint8_t *encoder_string;
1797 int encoder_string_len;
1798 int format_flags = 0;
1799
1800 e = av_dict_get(of->opts, "fflags", NULL, 0);
1801 if (e) {
1802 const AVOption *o = av_opt_find(of->ctx, "fflags", NULL, 0, 0);
1803 if (!o)
1804 return;
1805 av_opt_eval_flags(of->ctx, o, e->value, &format_flags);
1806 }
1807
1808 encoder_string_len = sizeof(LIBAVCODEC_IDENT) + strlen(ost->enc->name) + 2;
1809 encoder_string = av_mallocz(encoder_string_len);
1810 if (!encoder_string)
1811 exit_program(1);
1812
1813 if (!(format_flags & AVFMT_FLAG_BITEXACT))
1814 av_strlcpy(encoder_string, LIBAVCODEC_IDENT " ", encoder_string_len);
1815 av_strlcat(encoder_string, ost->enc->name, encoder_string_len);
1816 av_dict_set(&ost->st->metadata, "encoder", encoder_string,
1817 AV_DICT_DONT_STRDUP_VAL | AV_DICT_DONT_OVERWRITE);
1818 }
1819
1820 static int transcode_init(void)
1821 {
1822 int ret = 0, i, j, k;
1823 AVFormatContext *oc;
1824 OutputStream *ost;
1825 InputStream *ist;
1826 char error[1024];
1827 int want_sdp = 1;
1828
1829 /* init framerate emulation */
1830 for (i = 0; i < nb_input_files; i++) {
1831 InputFile *ifile = input_files[i];
1832 if (ifile->rate_emu)
1833 for (j = 0; j < ifile->nb_streams; j++)
1834 input_streams[j + ifile->ist_index]->start = av_gettime_relative();
1835 }
1836
1837 /* for each output stream, we compute the right encoding parameters */
1838 for (i = 0; i < nb_output_streams; i++) {
1839 ost = output_streams[i];
1840 oc = output_files[ost->file_index]->ctx;
1841 ist = get_input_stream(ost);
1842
1843 if (ost->attachment_filename)
1844 continue;
1845
1846 if (ist) {
1847 ost->st->disposition = ist->st->disposition;
1848 }
1849
1850 if (ost->stream_copy) {
1851 AVCodecParameters *par_dst = ost->st->codecpar;
1852 AVCodecParameters *par_src = ist->st->codecpar;
1853 AVRational sar;
1854 uint64_t extra_size;
1855
1856 av_assert0(ist && !ost->filter);
1857
1858 extra_size = (uint64_t)par_src->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE;
1859
1860 if (extra_size > INT_MAX) {
1861 return AVERROR(EINVAL);
1862 }
1863
1864 /* if stream_copy is selected, no need to decode or encode */
1865 par_dst->codec_id = par_src->codec_id;
1866 par_dst->codec_type = par_src->codec_type;
1867
1868 if (!par_dst->codec_tag) {
1869 if (!oc->oformat->codec_tag ||
1870 av_codec_get_id (oc->oformat->codec_tag, par_src->codec_tag) == par_dst->codec_id ||
1871 av_codec_get_tag(oc->oformat->codec_tag, par_src->codec_id) <= 0)
1872 par_dst->codec_tag = par_src->codec_tag;
1873 }
1874
1875 par_dst->bit_rate = par_src->bit_rate;
1876 par_dst->field_order = par_src->field_order;
1877 par_dst->chroma_location = par_src->chroma_location;
1878 if (par_src->extradata != NULL) {
1879 par_dst->extradata = av_mallocz(extra_size);
1880 if (!par_dst->extradata) {
1881 return AVERROR(ENOMEM);
1882 }
1883 memcpy(par_dst->extradata, par_src->extradata,
1884 par_src->extradata_size);
1885 par_dst->extradata_size = par_src->extradata_size;
1886 }
1887
1888 ost->st->time_base = ist->st->time_base;
1889
1890 if (ist->st->nb_side_data) {
1891 ost->st->side_data = av_realloc_array(NULL, ist->st->nb_side_data,
1892 sizeof(*ist->st->side_data));
1893 if (!ost->st->side_data)
1894 return AVERROR(ENOMEM);
1895
1896 for (j = 0; j < ist->st->nb_side_data; j++) {
1897 const AVPacketSideData *sd_src = &ist->st->side_data[j];
1898 AVPacketSideData *sd_dst = &ost->st->side_data[j];
1899
1900 sd_dst->data = av_malloc(sd_src->size);
1901 if (!sd_dst->data)
1902 return AVERROR(ENOMEM);
1903 memcpy(sd_dst->data, sd_src->data, sd_src->size);
1904 sd_dst->size = sd_src->size;
1905 sd_dst->type = sd_src->type;
1906 ost->st->nb_side_data++;
1907 }
1908 }
1909
1910 ost->parser = av_parser_init(par_dst->codec_id);
1911 ost->parser_avctx = avcodec_alloc_context3(NULL);
1912 if (!ost->parser_avctx)
1913 return AVERROR(ENOMEM);
1914
1915 switch (par_dst->codec_type) {
1916 case AVMEDIA_TYPE_AUDIO:
1917 if (audio_volume != 256) {
1918 av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
1919 exit_program(1);
1920 }
1921 par_dst->channel_layout = par_src->channel_layout;
1922 par_dst->sample_rate = par_src->sample_rate;
1923 par_dst->channels = par_src->channels;
1924 par_dst->block_align = par_src->block_align;
1925 break;
1926 case AVMEDIA_TYPE_VIDEO:
1927 par_dst->format = par_src->format;
1928 par_dst->width = par_src->width;
1929 par_dst->height = par_src->height;
1930 if (ost->frame_aspect_ratio)
1931 sar = av_d2q(ost->frame_aspect_ratio * par_dst->height / par_dst->width, 255);
1932 else if (ist->st->sample_aspect_ratio.num)
1933 sar = ist->st->sample_aspect_ratio;
1934 else
1935 sar = par_src->sample_aspect_ratio;
1936 ost->st->sample_aspect_ratio = par_dst->sample_aspect_ratio = sar;
1937 break;
1938 case AVMEDIA_TYPE_SUBTITLE:
1939 par_dst->width = par_src->width;
1940 par_dst->height = par_src->height;
1941 break;
1942 case AVMEDIA_TYPE_DATA:
1943 case AVMEDIA_TYPE_ATTACHMENT:
1944 break;
1945 default:
1946 abort();
1947 }
1948 } else {
1949 AVCodecContext *enc_ctx = ost->enc_ctx;
1950 AVCodecContext *dec_ctx = NULL;
1951
1952 if (!ost->enc) {
1953 /* should only happen when a default codec is not present. */
1954 snprintf(error, sizeof(error), "Automatic encoder selection "
1955 "failed for output stream #%d:%d. Default encoder for "
1956 "format %s is probably disabled. Please choose an "
1957 "encoder manually.\n", ost->file_index, ost->index,
1958 oc->oformat->name);
1959 ret = AVERROR(EINVAL);
1960 goto dump_format;
1961 }
1962
1963 set_encoder_id(output_files[ost->file_index], ost);
1964
1965 if (ist) {
1966 dec_ctx = ist->dec_ctx;
1967
1968 enc_ctx->bits_per_raw_sample = dec_ctx->bits_per_raw_sample;
1969 enc_ctx->chroma_sample_location = dec_ctx->chroma_sample_location;
1970 }
1971
1972 /*
1973 * We want CFR output if and only if one of those is true:
1974 * 1) user specified output framerate with -r
1975 * 2) user specified -vsync cfr
1976 * 3) output format is CFR and the user didn't force vsync to
1977 * something else than CFR
1978 *
1979 * in such a case, set ost->frame_rate
1980 */
1981 if (enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO &&
1982 !ost->frame_rate.num && ist &&
1983 (video_sync_method == VSYNC_CFR ||
1984 (video_sync_method == VSYNC_AUTO &&
1985 !(oc->oformat->flags & (AVFMT_NOTIMESTAMPS | AVFMT_VARIABLE_FPS))))) {
1986 if (ist->framerate.num)
1987 ost->frame_rate = ist->framerate;
1988 else if (ist->st->avg_frame_rate.num)
1989 ost->frame_rate = ist->st->avg_frame_rate;
1990 else {
1991 av_log(NULL, AV_LOG_WARNING, "Constant framerate requested "
1992 "for the output stream #%d:%d, but no information "
1993 "about the input framerate is available. Falling "
1994 "back to a default value of 25fps. Use the -r option "
1995 "if you want a different framerate.\n",
1996 ost->file_index, ost->index);
1997 ost->frame_rate = (AVRational){ 25, 1 };
1998 }
1999
2000 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2001 int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2002 ost->frame_rate = ost->enc->supported_framerates[idx];
2003 }
2004 }
2005
2006 #if CONFIG_LIBMFX
2007 if (qsv_transcode_init(ost))
2008 exit_program(1);
2009 #endif
2010
2011 if (!ost->filter &&
2012 (enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
2013 enc_ctx->codec_type == AVMEDIA_TYPE_AUDIO)) {
2014 FilterGraph *fg;
2015 fg = init_simple_filtergraph(ist, ost);
2016 if (configure_filtergraph(fg)) {
2017 av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2018 exit_program(1);
2019 }
2020 }
2021
2022 switch (enc_ctx->codec_type) {
2023 case AVMEDIA_TYPE_AUDIO:
2024 enc_ctx->sample_fmt = ost->filter->filter->inputs[0]->format;
2025 enc_ctx->sample_rate = ost->filter->filter->inputs[0]->sample_rate;
2026 enc_ctx->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2027 enc_ctx->channels = av_get_channel_layout_nb_channels(enc_ctx->channel_layout);
2028 enc_ctx->time_base = (AVRational){ 1, enc_ctx->sample_rate };
2029 break;
2030 case AVMEDIA_TYPE_VIDEO:
2031 enc_ctx->time_base = ost->filter->filter->inputs[0]->time_base;
2032
2033 enc_ctx->width = ost->filter->filter->inputs[0]->w;
2034 enc_ctx->height = ost->filter->filter->inputs[0]->h;
2035 enc_ctx->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2036 ost->frame_aspect_ratio ? // overridden by the -aspect cli option
2037 av_d2q(ost->frame_aspect_ratio * enc_ctx->height/enc_ctx->width, 255) :
2038 ost->filter->filter->inputs[0]->sample_aspect_ratio;
2039 enc_ctx->pix_fmt = ost->filter->filter->inputs[0]->format;
2040
2041 ost->st->avg_frame_rate = ost->frame_rate;
2042
2043 if (dec_ctx &&
2044 (enc_ctx->width != dec_ctx->width ||
2045 enc_ctx->height != dec_ctx->height ||
2046 enc_ctx->pix_fmt != dec_ctx->pix_fmt)) {
2047 enc_ctx->bits_per_raw_sample = 0;
2048 }
2049
2050 if (ost->forced_keyframes)
2051 parse_forced_key_frames(ost->forced_keyframes, ost,
2052 ost->enc_ctx);
2053 break;
2054 case AVMEDIA_TYPE_SUBTITLE:
2055 enc_ctx->time_base = (AVRational){1, 1000};
2056 break;
2057 default:
2058 abort();
2059 break;
2060 }
2061 }
2062 }
2063
2064 /* init input streams */
2065 for (i = 0; i < nb_input_streams; i++)
2066 if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
2067 goto dump_format;
2068
2069 /* open each encoder */
2070 for (i = 0; i < nb_output_streams; i++) {
2071 ret = init_output_stream(output_streams[i], error, sizeof(error));
2072 if (ret < 0)
2073 goto dump_format;
2074 }
2075
2076
2077 /* discard unused programs */
2078 for (i = 0; i < nb_input_files; i++) {
2079 InputFile *ifile = input_files[i];
2080 for (j = 0; j < ifile->ctx->nb_programs; j++) {
2081 AVProgram *p = ifile->ctx->programs[j];
2082 int discard = AVDISCARD_ALL;
2083
2084 for (k = 0; k < p->nb_stream_indexes; k++)
2085 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2086 discard = AVDISCARD_DEFAULT;
2087 break;
2088 }
2089 p->discard = discard;
2090 }
2091 }
2092
2093 /* open files and write file headers */
2094 for (i = 0; i < nb_output_files; i++) {
2095 oc = output_files[i]->ctx;
2096 oc->interrupt_callback = int_cb;
2097 if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2098 char errbuf[128];
2099 av_strerror(ret, errbuf, sizeof(errbuf));
2100 snprintf(error, sizeof(error),
2101 "Could not write header for output file #%d "
2102 "(incorrect codec parameters ?): %s",
2103 i, errbuf);
2104 ret = AVERROR(EINVAL);
2105 goto dump_format;
2106 }
2107 assert_avoptions(output_files[i]->opts);
2108 if (strcmp(oc->oformat->name, "rtp")) {
2109 want_sdp = 0;
2110 }
2111 }
2112
2113 dump_format:
2114 /* dump the file output parameters - cannot be done before in case
2115 of stream copy */
2116 for (i = 0; i < nb_output_files; i++) {
2117 av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2118 }
2119
2120 /* dump the stream mapping */
2121 av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2122 for (i = 0; i < nb_input_streams; i++) {
2123 ist = input_streams[i];
2124
2125 for (j = 0; j < ist->nb_filters; j++) {
2126 if (!filtergraph_is_simple(ist->filters[j]->graph)) {
2127 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d (%s) -> %s",
2128 ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2129 ist->filters[j]->name);
2130 if (nb_filtergraphs > 1)
2131 av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2132 av_log(NULL, AV_LOG_INFO, "\n");
2133 }
2134 }
2135 }
2136
2137 for (i = 0; i < nb_output_streams; i++) {
2138 ost = output_streams[i];
2139
2140 if (ost->attachment_filename) {
2141 /* an attached file */
2142 av_log(NULL, AV_LOG_INFO, " File %s -> Stream #%d:%d\n",
2143 ost->attachment_filename, ost->file_index, ost->index);
2144 continue;
2145 }
2146
2147 if (ost->filter && !filtergraph_is_simple(ost->filter->graph)) {
2148 /* output from a complex graph */
2149 av_log(NULL, AV_LOG_INFO, " %s", ost->filter->name);
2150 if (nb_filtergraphs > 1)
2151 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2152
2153 av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2154 ost->index, ost->enc ? ost->enc->name : "?");
2155 continue;
2156 }
2157
2158 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d -> #%d:%d",
2159 input_streams[ost->source_index]->file_index,
2160 input_streams[ost->source_index]->st->index,
2161 ost->file_index,
2162 ost->index);
2163 if (ost->sync_ist != input_streams[ost->source_index])
2164 av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2165 ost->sync_ist->file_index,
2166 ost->sync_ist->st->index);
2167 if (ost->stream_copy)
2168 av_log(NULL, AV_LOG_INFO, " (copy)");
2169 else {
2170 const AVCodec *in_codec = input_streams[ost->source_index]->dec;
2171 const AVCodec *out_codec = ost->enc;
2172 const char *decoder_name = "?";
2173 const char *in_codec_name = "?";
2174 const char *encoder_name = "?";
2175 const char *out_codec_name = "?";
2176 const AVCodecDescriptor *desc;
2177
2178 if (in_codec) {
2179 decoder_name = in_codec->name;
2180 desc = avcodec_descriptor_get(in_codec->id);
2181 if (desc)
2182 in_codec_name = desc->name;
2183 if (!strcmp(decoder_name, in_codec_name))
2184 decoder_name = "native";
2185 }
2186
2187 if (out_codec) {
2188 encoder_name = out_codec->name;
2189 desc = avcodec_descriptor_get(out_codec->id);
2190 if (desc)
2191 out_codec_name = desc->name;
2192 if (!strcmp(encoder_name, out_codec_name))
2193 encoder_name = "native";
2194 }
2195
2196 av_log(NULL, AV_LOG_INFO, " (%s (%s) -> %s (%s))",
2197 in_codec_name, decoder_name,
2198 out_codec_name, encoder_name);
2199 }
2200 av_log(NULL, AV_LOG_INFO, "\n");
2201 }
2202
2203 if (ret) {
2204 av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2205 return ret;
2206 }
2207
2208 if (want_sdp) {
2209 print_sdp();
2210 }
2211
2212 return 0;
2213 }
2214
2215 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2216 static int need_output(void)
2217 {
2218 int i;
2219
2220 for (i = 0; i < nb_output_streams; i++) {
2221 OutputStream *ost = output_streams[i];
2222 OutputFile *of = output_files[ost->file_index];
2223 AVFormatContext *os = output_files[ost->file_index]->ctx;
2224
2225 if (ost->finished ||
2226 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2227 continue;
2228 if (ost->frame_number >= ost->max_frames) {
2229 int j;
2230 for (j = 0; j < of->ctx->nb_streams; j++)
2231 output_streams[of->ost_index + j]->finished = 1;
2232 continue;
2233 }
2234
2235 return 1;
2236 }
2237
2238 return 0;
2239 }
2240
2241 static InputFile *select_input_file(void)
2242 {
2243 InputFile *ifile = NULL;
2244 int64_t ipts_min = INT64_MAX;
2245 int i;
2246
2247 for (i = 0; i < nb_input_streams; i++) {
2248 InputStream *ist = input_streams[i];
2249 int64_t ipts = ist->last_dts;
2250
2251 if (ist->discard || input_files[ist->file_index]->eagain)
2252 continue;
2253 if (!input_files[ist->file_index]->eof_reached) {
2254 if (ipts < ipts_min) {
2255 ipts_min = ipts;
2256 ifile = input_files[ist->file_index];
2257 }
2258 }
2259 }
2260
2261 return ifile;
2262 }
2263
2264 #if HAVE_PTHREADS
2265 static void *input_thread(void *arg)
2266 {
2267 InputFile *f = arg;
2268 int ret = 0;
2269
2270 while (!transcoding_finished && ret >= 0) {
2271 AVPacket pkt;
2272 ret = av_read_frame(f->ctx, &pkt);
2273
2274 if (ret == AVERROR(EAGAIN)) {
2275 av_usleep(10000);
2276 ret = 0;
2277 continue;
2278 } else if (ret < 0)
2279 break;
2280
2281 pthread_mutex_lock(&f->fifo_lock);
2282 while (!av_fifo_space(f->fifo))
2283 pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2284
2285 av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2286
2287 pthread_mutex_unlock(&f->fifo_lock);
2288 }
2289
2290 f->finished = 1;
2291 return NULL;
2292 }
2293
2294 static void free_input_threads(void)
2295 {
2296 int i;
2297
2298 if (nb_input_files == 1)
2299 return;
2300
2301 transcoding_finished = 1;
2302
2303 for (i = 0; i < nb_input_files; i++) {
2304 InputFile *f = input_files[i];
2305 AVPacket pkt;
2306
2307 if (!f->fifo || f->joined)
2308 continue;
2309
2310 pthread_mutex_lock(&f->fifo_lock);
2311 while (av_fifo_size(f->fifo)) {
2312 av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2313 av_packet_unref(&pkt);
2314 }
2315 pthread_cond_signal(&f->fifo_cond);
2316 pthread_mutex_unlock(&f->fifo_lock);
2317
2318 pthread_join(f->thread, NULL);
2319 f->joined = 1;
2320
2321 while (av_fifo_size(f->fifo)) {
2322 av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2323 av_packet_unref(&pkt);
2324 }
2325 av_fifo_free(f->fifo);
2326 }
2327 }
2328
2329 static int init_input_threads(void)
2330 {
2331 int i, ret;
2332
2333 if (nb_input_files == 1)
2334 return 0;
2335
2336 for (i = 0; i < nb_input_files; i++) {
2337 InputFile *f = input_files[i];
2338
2339 if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2340 return AVERROR(ENOMEM);
2341
2342 pthread_mutex_init(&f->fifo_lock, NULL);
2343 pthread_cond_init (&f->fifo_cond, NULL);
2344
2345 if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2346 return AVERROR(ret);
2347 }
2348 return 0;
2349 }
2350
2351 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2352 {
2353 int ret = 0;
2354
2355 pthread_mutex_lock(&f->fifo_lock);
2356
2357 if (av_fifo_size(f->fifo)) {
2358 av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2359 pthread_cond_signal(&f->fifo_cond);
2360 } else {
2361 if (f->finished)
2362 ret = AVERROR_EOF;
2363 else
2364 ret = AVERROR(EAGAIN);
2365 }
2366
2367 pthread_mutex_unlock(&f->fifo_lock);
2368
2369 return ret;
2370 }
2371 #endif
2372
2373 static int get_input_packet(InputFile *f, AVPacket *pkt)
2374 {
2375 if (f->rate_emu) {
2376 int i;
2377 for (i = 0; i < f->nb_streams; i++) {
2378 InputStream *ist = input_streams[f->ist_index + i];
2379 int64_t pts = av_rescale(ist->last_dts, 1000000, AV_TIME_BASE);
2380 int64_t now = av_gettime_relative() - ist->start;
2381 if (pts > now)
2382 return AVERROR(EAGAIN);
2383 }
2384 }
2385
2386 #if HAVE_PTHREADS
2387 if (nb_input_files > 1)
2388 return get_input_packet_mt(f, pkt);
2389 #endif
2390 return av_read_frame(f->ctx, pkt);
2391 }
2392
2393 static int got_eagain(void)
2394 {
2395 int i;
2396 for (i = 0; i < nb_input_files; i++)
2397 if (input_files[i]->eagain)
2398 return 1;
2399 return 0;
2400 }
2401
2402 static void reset_eagain(void)
2403 {
2404 int i;
2405 for (i = 0; i < nb_input_files; i++)
2406 input_files[i]->eagain = 0;
2407 }
2408
2409 // set duration to max(tmp, duration) in a proper time base and return duration's time_base
2410 static AVRational duration_max(int64_t tmp, int64_t *duration, AVRational tmp_time_base,
2411 AVRational time_base)
2412 {
2413 int ret;
2414
2415 if (!*duration) {
2416 *duration = tmp;
2417 return tmp_time_base;
2418 }
2419
2420 ret = av_compare_ts(*duration, time_base, tmp, tmp_time_base);
2421 if (ret < 0) {
2422 *duration = tmp;
2423 return tmp_time_base;
2424 }
2425
2426 return time_base;
2427 }
2428
2429 static int seek_to_start(InputFile *ifile, AVFormatContext *is)
2430 {
2431 InputStream *ist;
2432 AVCodecContext *avctx;
2433 int i, ret, has_audio = 0;
2434 int64_t duration = 0;
2435
2436 ret = av_seek_frame(is, -1, is->start_time, 0);
2437 if (ret < 0)
2438 return ret;
2439
2440 for (i = 0; i < ifile->nb_streams; i++) {
2441 ist = input_streams[ifile->ist_index + i];
2442 avctx = ist->dec_ctx;
2443
2444 // flush decoders
2445 if (ist->decoding_needed) {
2446 process_input_packet(ist, NULL, 1);
2447 avcodec_flush_buffers(avctx);
2448 }
2449
2450 /* duration is the length of the last frame in a stream
2451 * when audio stream is present we don't care about
2452 * last video frame length because it's not defined exactly */
2453 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && ist->nb_samples)
2454 has_audio = 1;
2455 }
2456
2457 for (i = 0; i < ifile->nb_streams; i++) {
2458 ist = input_streams[ifile->ist_index + i];
2459 avctx = ist->dec_ctx;
2460
2461 if (has_audio) {
2462 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && ist->nb_samples) {
2463 AVRational sample_rate = {1, avctx->sample_rate};
2464
2465 duration = av_rescale_q(ist->nb_samples, sample_rate, ist->st->time_base);
2466 } else
2467 continue;
2468 } else {
2469 if (ist->framerate.num) {
2470 duration = av_rescale_q(1, ist->framerate, ist->st->time_base);
2471 } else if (ist->st->avg_frame_rate.num) {
2472 duration = av_rescale_q(1, ist->st->avg_frame_rate, ist->st->time_base);
2473 } else duration = 1;
2474 }
2475 if (!ifile->duration)
2476 ifile->time_base = ist->st->time_base;
2477 /* the total duration of the stream, max_pts - min_pts is
2478 * the duration of the stream without the last frame */
2479 duration += ist->max_pts - ist->min_pts;
2480 ifile->time_base = duration_max(duration, &ifile->duration, ist->st->time_base,
2481 ifile->time_base);
2482 }
2483
2484 if (ifile->loop > 0)
2485 ifile->loop--;
2486
2487 return ret;
2488 }
2489
2490 /*
2491 * Read one packet from an input file and send it for
2492 * - decoding -> lavfi (audio/video)
2493 * - decoding -> encoding -> muxing (subtitles)
2494 * - muxing (streamcopy)
2495 *
2496 * Return
2497 * - 0 -- one packet was read and processed
2498 * - AVERROR(EAGAIN) -- no packets were available for selected file,
2499 * this function should be called again
2500 * - AVERROR_EOF -- this function should not be called again
2501 */
2502 static int process_input(void)
2503 {
2504 InputFile *ifile;
2505 AVFormatContext *is;
2506 InputStream *ist;
2507 AVPacket pkt;
2508 int ret, i, j;
2509 int64_t duration;
2510
2511 /* select the stream that we must read now */
2512 ifile = select_input_file();
2513 /* if none, if is finished */
2514 if (!ifile) {
2515 if (got_eagain()) {
2516 reset_eagain();
2517 av_usleep(10000);
2518 return AVERROR(EAGAIN);
2519 }
2520 av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from.\n");
2521 return AVERROR_EOF;
2522 }
2523
2524 is = ifile->ctx;
2525 ret = get_input_packet(ifile, &pkt);
2526
2527 if (ret == AVERROR(EAGAIN)) {
2528 ifile->eagain = 1;
2529 return ret;
2530 }
2531 if (ret < 0 && ifile->loop) {
2532 if ((ret = seek_to_start(ifile, is)) < 0)
2533 return ret;
2534 ret = get_input_packet(ifile, &pkt);
2535 }
2536 if (ret < 0) {
2537 if (ret != AVERROR_EOF) {
2538 print_error(is->filename, ret);
2539 if (exit_on_error)
2540 exit_program(1);
2541 }
2542 ifile->eof_reached = 1;
2543
2544 for (i = 0; i < ifile->nb_streams; i++) {
2545 ist = input_streams[ifile->ist_index + i];
2546 if (ist->decoding_needed)
2547 process_input_packet(ist, NULL, 0);
2548
2549 /* mark all outputs that don't go through lavfi as finished */
2550 for (j = 0; j < nb_output_streams; j++) {
2551 OutputStream *ost = output_streams[j];
2552
2553 if (ost->source_index == ifile->ist_index + i &&
2554 (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2555 finish_output_stream(ost);
2556 }
2557 }
2558
2559 return AVERROR(EAGAIN);
2560 }
2561
2562 reset_eagain();
2563
2564 if (do_pkt_dump) {
2565 av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2566 is->streams[pkt.stream_index]);
2567 }
2568 /* the following test is needed in case new streams appear
2569 dynamically in stream : we ignore them */
2570 if (pkt.stream_index >= ifile->nb_streams)
2571 goto discard_packet;
2572
2573 ist = input_streams[ifile->ist_index + pkt.stream_index];
2574
2575 ist->data_size += pkt.size;
2576 ist->nb_packets++;
2577
2578 if (ist->discard)
2579 goto discard_packet;
2580
2581 /* add the stream-global side data to the first packet */
2582 if (ist->nb_packets == 1)
2583 for (i = 0; i < ist->st->nb_side_data; i++) {
2584 AVPacketSideData *src_sd = &ist->st->side_data[i];
2585 uint8_t *dst_data;
2586
2587 if (av_packet_get_side_data(&pkt, src_sd->type, NULL))
2588 continue;
2589 if (ist->autorotate && src_sd->type == AV_PKT_DATA_DISPLAYMATRIX)
2590 continue;
2591
2592 dst_data = av_packet_new_side_data(&pkt, src_sd->type, src_sd->size);
2593 if (!dst_data)
2594 exit_program(1);
2595
2596 memcpy(dst_data, src_sd->data, src_sd->size);
2597 }
2598
2599 if (pkt.dts != AV_NOPTS_VALUE)
2600 pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2601 if (pkt.pts != AV_NOPTS_VALUE)
2602 pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2603
2604 if (pkt.pts != AV_NOPTS_VALUE)
2605 pkt.pts *= ist->ts_scale;
2606 if (pkt.dts != AV_NOPTS_VALUE)
2607 pkt.dts *= ist->ts_scale;
2608
2609 if ((ist->dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
2610 ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) &&
2611 pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2612 (is->iformat->flags & AVFMT_TS_DISCONT)) {
2613 int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2614 int64_t delta = pkt_dts - ist->next_dts;
2615
2616 if ((FFABS(delta) > 1LL * dts_delta_threshold * AV_TIME_BASE || pkt_dts + 1 < ist->last_dts) && !copy_ts) {
2617 ifile->ts_offset -= delta;
2618 av_log(NULL, AV_LOG_DEBUG,
2619 "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2620 delta, ifile->ts_offset);
2621 pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2622 if (pkt.pts != AV_NOPTS_VALUE)
2623 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2624 }
2625 }
2626 duration = av_rescale_q(ifile->duration, ifile->time_base, ist->st->time_base);
2627 if (pkt.pts != AV_NOPTS_VALUE) {
2628 pkt.pts += duration;
2629 ist->max_pts = FFMAX(pkt.pts, ist->max_pts);
2630 ist->min_pts = FFMIN(pkt.pts, ist->min_pts);
2631 }
2632
2633 if (pkt.dts != AV_NOPTS_VALUE)
2634 pkt.dts += duration;
2635
2636 process_input_packet(ist, &pkt, 0);
2637
2638 discard_packet:
2639 av_packet_unref(&pkt);
2640
2641 return 0;
2642 }
2643
2644 /*
2645 * The following code is the main loop of the file converter
2646 */
2647 static int transcode(void)
2648 {
2649 int ret, i, need_input = 1;
2650 AVFormatContext *os;
2651 OutputStream *ost;
2652 InputStream *ist;
2653 int64_t timer_start;
2654
2655 ret = transcode_init();
2656 if (ret < 0)
2657 goto fail;
2658
2659 av_log(NULL, AV_LOG_INFO, "Press ctrl-c to stop encoding\n");
2660 term_init();
2661
2662 timer_start = av_gettime_relative();
2663
2664 #if HAVE_PTHREADS
2665 if ((ret = init_input_threads()) < 0)
2666 goto fail;
2667 #endif
2668
2669 while (!received_sigterm) {
2670 /* check if there's any stream where output is still needed */
2671 if (!need_output()) {
2672 av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
2673 break;
2674 }
2675
2676 /* read and process one input packet if needed */
2677 if (need_input) {
2678 ret = process_input();
2679 if (ret == AVERROR_EOF)
2680 need_input = 0;
2681 }
2682
2683 ret = poll_filters();
2684 if (ret < 0 && ret != AVERROR_EOF) {
2685 char errbuf[128];
2686 av_strerror(ret, errbuf, sizeof(errbuf));
2687
2688 av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n", errbuf);
2689 break;
2690 }
2691
2692 /* dump report by using the output first video and audio streams */
2693 print_report(0, timer_start);
2694 }
2695 #if HAVE_PTHREADS
2696 free_input_threads();
2697 #endif
2698
2699 /* at the end of stream, we must flush the decoder buffers */
2700 for (i = 0; i < nb_input_streams; i++) {
2701 ist = input_streams[i];
2702 if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
2703 process_input_packet(ist, NULL, 0);
2704 }
2705 }
2706 poll_filters();
2707 flush_encoders();
2708
2709 term_exit();
2710
2711 /* write the trailer if needed and close file */
2712 for (i = 0; i < nb_output_files; i++) {
2713 os = output_files[i]->ctx;
2714 av_write_trailer(os);
2715 }
2716
2717 /* dump report by using the first video and audio streams */
2718 print_report(1, timer_start);
2719
2720 /* close each encoder */
2721 for (i = 0; i < nb_output_streams; i++) {
2722 ost = output_streams[i];
2723 if (ost->encoding_needed) {
2724 av_freep(&ost->enc_ctx->stats_in);
2725 }
2726 }
2727
2728 /* close each decoder */
2729 for (i = 0; i < nb_input_streams; i++) {
2730 ist = input_streams[i];
2731 if (ist->decoding_needed) {
2732 avcodec_close(ist->dec_ctx);
2733 if (ist->hwaccel_uninit)
2734 ist->hwaccel_uninit(ist->dec_ctx);
2735 }
2736 }
2737
2738 av_buffer_unref(&hw_device_ctx);
2739
2740 /* finished ! */
2741 ret = 0;
2742
2743 fail:
2744 #if HAVE_PTHREADS
2745 free_input_threads();
2746 #endif
2747
2748 if (output_streams) {
2749 for (i = 0; i < nb_output_streams; i++) {
2750 ost = output_streams[i];
2751 if (ost) {
2752 if (ost->logfile) {
2753 fclose(ost->logfile);
2754 ost->logfile = NULL;
2755 }
2756 av_free(ost->forced_kf_pts);
2757 av_dict_free(&ost->encoder_opts);
2758 av_dict_free(&ost->resample_opts);
2759 }
2760 }
2761 }
2762 return ret;
2763 }
2764
2765 static int64_t getutime(void)
2766 {
2767 #if HAVE_GETRUSAGE
2768 struct rusage rusage;
2769
2770 getrusage(RUSAGE_SELF, &rusage);
2771 return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
2772 #elif HAVE_GETPROCESSTIMES
2773 HANDLE proc;
2774 FILETIME c, e, k, u;
2775 proc = GetCurrentProcess();
2776 GetProcessTimes(proc, &c, &e, &k, &u);
2777 return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
2778 #else
2779 return av_gettime_relative();
2780 #endif
2781 }
2782
2783 static int64_t getmaxrss(void)
2784 {
2785 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
2786 struct rusage rusage;
2787 getrusage(RUSAGE_SELF, &rusage);
2788 return (int64_t)rusage.ru_maxrss * 1024;
2789 #elif HAVE_GETPROCESSMEMORYINFO
2790 HANDLE proc;
2791 PROCESS_MEMORY_COUNTERS memcounters;
2792 proc = GetCurrentProcess();
2793 memcounters.cb = sizeof(memcounters);
2794 GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
2795 return memcounters.PeakPagefileUsage;
2796 #else
2797 return 0;
2798 #endif
2799 }
2800
2801 int main(int argc, char **argv)
2802 {
2803 int ret;
2804 int64_t ti;
2805
2806 register_exit(avconv_cleanup);
2807
2808 av_log_set_flags(AV_LOG_SKIP_REPEATED);
2809 parse_loglevel(argc, argv, options);
2810
2811 avcodec_register_all();
2812 #if CONFIG_AVDEVICE
2813 avdevice_register_all();
2814 #endif
2815 avfilter_register_all();
2816 av_register_all();
2817 avformat_network_init();
2818
2819 show_banner();
2820
2821 /* parse options and open all input/output files */
2822 ret = avconv_parse_options(argc, argv);
2823 if (ret < 0)
2824 exit_program(1);
2825
2826 if (nb_output_files <= 0 && nb_input_files == 0) {
2827 show_usage();
2828 av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
2829 exit_program(1);
2830 }
2831
2832 /* file converter / grab */
2833 if (nb_output_files <= 0) {
2834 fprintf(stderr, "At least one output file must be specified\n");
2835 exit_program(1);
2836 }
2837
2838 ti = getutime();
2839 if (transcode() < 0)
2840 exit_program(1);
2841 ti = getutime() - ti;
2842 if (do_benchmark) {
2843 int maxrss = getmaxrss() / 1024;
2844 printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss);
2845 }
2846
2847 exit_program(0);
2848 return 0;
2849 }