lavc: add codec parameters API
[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 AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
179 while (bsfc) {
180 AVBitStreamFilterContext *next = bsfc->next;
181 av_bitstream_filter_close(bsfc);
182 bsfc = next;
183 }
184 ost->bitstream_filters = NULL;
185 av_frame_free(&ost->filtered_frame);
186
187 av_parser_close(ost->parser);
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_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
259 {
260 AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
261 AVCodecContext *avctx = ost->encoding_needed ? ost->enc_ctx : ost->st->codec;
262 int ret;
263
264 /*
265 * Audio encoders may split the packets -- #frames in != #packets out.
266 * But there is no reordering, so we can limit the number of output packets
267 * by simply dropping them here.
268 * Counting encoded video frames needs to be done separately because of
269 * reordering, see do_video_out()
270 */
271 if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
272 if (ost->frame_number >= ost->max_frames) {
273 av_packet_unref(pkt);
274 return;
275 }
276 ost->frame_number++;
277 }
278 if (avctx->codec_type == AVMEDIA_TYPE_VIDEO) {
279 uint8_t *sd = av_packet_get_side_data(pkt, AV_PKT_DATA_QUALITY_FACTOR,
280 NULL);
281 ost->quality = sd ? *(int *)sd : -1;
282
283 if (ost->frame_rate.num) {
284 pkt->duration = av_rescale_q(1, av_inv_q(ost->frame_rate),
285 ost->st->time_base);
286 }
287 }
288
289 while (bsfc) {
290 AVPacket new_pkt = *pkt;
291 int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
292 &new_pkt.data, &new_pkt.size,
293 pkt->data, pkt->size,
294 pkt->flags & AV_PKT_FLAG_KEY);
295 if (a > 0) {
296 av_packet_unref(pkt);
297 new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
298 av_buffer_default_free, NULL, 0);
299 if (!new_pkt.buf)
300 exit_program(1);
301 } else if (a < 0) {
302 av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
303 bsfc->filter->name, pkt->stream_index,
304 avctx->codec ? avctx->codec->name : "copy");
305 print_error("", a);
306 if (exit_on_error)
307 exit_program(1);
308 }
309 *pkt = new_pkt;
310
311 bsfc = bsfc->next;
312 }
313
314 if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS) &&
315 ost->last_mux_dts != AV_NOPTS_VALUE &&
316 pkt->dts < ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT)) {
317 av_log(NULL, AV_LOG_WARNING, "Non-monotonous DTS in output stream "
318 "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
319 ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
320 if (exit_on_error) {
321 av_log(NULL, AV_LOG_FATAL, "aborting.\n");
322 exit_program(1);
323 }
324 av_log(NULL, AV_LOG_WARNING, "changing to %"PRId64". This may result "
325 "in incorrect timestamps in the output file.\n",
326 ost->last_mux_dts + 1);
327 pkt->dts = ost->last_mux_dts + 1;
328 if (pkt->pts != AV_NOPTS_VALUE)
329 pkt->pts = FFMAX(pkt->pts, pkt->dts);
330 }
331 ost->last_mux_dts = pkt->dts;
332
333 ost->data_size += pkt->size;
334 ost->packets_written++;
335
336 pkt->stream_index = ost->index;
337 ret = av_interleaved_write_frame(s, pkt);
338 if (ret < 0) {
339 print_error("av_interleaved_write_frame()", ret);
340 exit_program(1);
341 }
342 }
343
344 static int check_recording_time(OutputStream *ost)
345 {
346 OutputFile *of = output_files[ost->file_index];
347
348 if (of->recording_time != INT64_MAX &&
349 av_compare_ts(ost->sync_opts - ost->first_pts, ost->enc_ctx->time_base, of->recording_time,
350 AV_TIME_BASE_Q) >= 0) {
351 ost->finished = 1;
352 return 0;
353 }
354 return 1;
355 }
356
357 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
358 AVFrame *frame)
359 {
360 AVCodecContext *enc = ost->enc_ctx;
361 AVPacket pkt;
362 int got_packet = 0;
363
364 av_init_packet(&pkt);
365 pkt.data = NULL;
366 pkt.size = 0;
367
368 if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
369 frame->pts = ost->sync_opts;
370 ost->sync_opts = frame->pts + frame->nb_samples;
371
372 ost->samples_encoded += frame->nb_samples;
373 ost->frames_encoded++;
374
375 if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
376 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
377 exit_program(1);
378 }
379
380 if (got_packet) {
381 av_packet_rescale_ts(&pkt, enc->time_base, ost->st->time_base);
382 write_frame(s, &pkt, ost);
383 }
384 }
385
386 static void do_subtitle_out(AVFormatContext *s,
387 OutputStream *ost,
388 InputStream *ist,
389 AVSubtitle *sub,
390 int64_t pts)
391 {
392 static uint8_t *subtitle_out = NULL;
393 int subtitle_out_max_size = 1024 * 1024;
394 int subtitle_out_size, nb, i;
395 AVCodecContext *enc;
396 AVPacket pkt;
397
398 if (pts == AV_NOPTS_VALUE) {
399 av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
400 if (exit_on_error)
401 exit_program(1);
402 return;
403 }
404
405 enc = ost->enc_ctx;
406
407 if (!subtitle_out) {
408 subtitle_out = av_malloc(subtitle_out_max_size);
409 }
410
411 /* Note: DVB subtitle need one packet to draw them and one other
412 packet to clear them */
413 /* XXX: signal it in the codec context ? */
414 if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
415 nb = 2;
416 else
417 nb = 1;
418
419 for (i = 0; i < nb; i++) {
420 ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
421 if (!check_recording_time(ost))
422 return;
423
424 sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
425 // start_display_time is required to be 0
426 sub->pts += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
427 sub->end_display_time -= sub->start_display_time;
428 sub->start_display_time = 0;
429
430 ost->frames_encoded++;
431
432 subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
433 subtitle_out_max_size, sub);
434 if (subtitle_out_size < 0) {
435 av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
436 exit_program(1);
437 }
438
439 av_init_packet(&pkt);
440 pkt.data = subtitle_out;
441 pkt.size = subtitle_out_size;
442 pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
443 if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
444 /* XXX: the pts correction is handled here. Maybe handling
445 it in the codec would be better */
446 if (i == 0)
447 pkt.pts += 90 * sub->start_display_time;
448 else
449 pkt.pts += 90 * sub->end_display_time;
450 }
451 write_frame(s, &pkt, ost);
452 }
453 }
454
455 static void do_video_out(AVFormatContext *s,
456 OutputStream *ost,
457 AVFrame *in_picture,
458 int *frame_size)
459 {
460 int ret, format_video_sync, got_packet;
461 AVPacket pkt;
462 AVCodecContext *enc = ost->enc_ctx;
463
464 *frame_size = 0;
465
466 format_video_sync = video_sync_method;
467 if (format_video_sync == VSYNC_AUTO)
468 format_video_sync = (s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH :
469 (s->oformat->flags & AVFMT_VARIABLE_FPS) ? VSYNC_VFR : VSYNC_CFR;
470 if (format_video_sync != VSYNC_PASSTHROUGH &&
471 ost->frame_number &&
472 in_picture->pts != AV_NOPTS_VALUE &&
473 in_picture->pts < ost->sync_opts) {
474 nb_frames_drop++;
475 av_log(NULL, AV_LOG_WARNING,
476 "*** dropping frame %d from stream %d at ts %"PRId64"\n",
477 ost->frame_number, ost->st->index, in_picture->pts);
478 return;
479 }
480
481 if (in_picture->pts == AV_NOPTS_VALUE)
482 in_picture->pts = ost->sync_opts;
483 ost->sync_opts = in_picture->pts;
484
485
486 if (!ost->frame_number)
487 ost->first_pts = in_picture->pts;
488
489 av_init_packet(&pkt);
490 pkt.data = NULL;
491 pkt.size = 0;
492
493 if (ost->frame_number >= ost->max_frames)
494 return;
495
496 if (enc->flags & (AV_CODEC_FLAG_INTERLACED_DCT | AV_CODEC_FLAG_INTERLACED_ME) &&
497 ost->top_field_first >= 0)
498 in_picture->top_field_first = !!ost->top_field_first;
499
500 in_picture->quality = enc->global_quality;
501 in_picture->pict_type = 0;
502 if (ost->forced_kf_index < ost->forced_kf_count &&
503 in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
504 in_picture->pict_type = AV_PICTURE_TYPE_I;
505 ost->forced_kf_index++;
506 }
507
508 ost->frames_encoded++;
509
510 ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
511 if (ret < 0) {
512 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
513 exit_program(1);
514 }
515
516 if (got_packet) {
517 av_packet_rescale_ts(&pkt, enc->time_base, ost->st->time_base);
518 write_frame(s, &pkt, ost);
519 *frame_size = pkt.size;
520
521 /* if two pass, output log */
522 if (ost->logfile && enc->stats_out) {
523 fprintf(ost->logfile, "%s", enc->stats_out);
524 }
525 }
526
527 ost->sync_opts++;
528 /*
529 * For video, number of frames in == number of packets out.
530 * But there may be reordering, so we can't throw away frames on encoder
531 * flush, we need to limit them here, before they go into encoder.
532 */
533 ost->frame_number++;
534 }
535
536 static double psnr(double d)
537 {
538 return -10.0 * log(d) / log(10.0);
539 }
540
541 static void do_video_stats(OutputStream *ost, int frame_size)
542 {
543 AVCodecContext *enc;
544 int frame_number;
545 double ti1, bitrate, avg_bitrate;
546
547 /* this is executed just the first time do_video_stats is called */
548 if (!vstats_file) {
549 vstats_file = fopen(vstats_filename, "w");
550 if (!vstats_file) {
551 perror("fopen");
552 exit_program(1);
553 }
554 }
555
556 enc = ost->enc_ctx;
557 if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
558 frame_number = ost->frame_number;
559 fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number,
560 ost->quality / (float)FF_QP2LAMBDA);
561
562 #if FF_API_CODED_FRAME
563 FF_DISABLE_DEPRECATION_WARNINGS
564 if (enc->flags & AV_CODEC_FLAG_PSNR)
565 fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
566 FF_ENABLE_DEPRECATION_WARNINGS
567 #endif
568
569 fprintf(vstats_file,"f_size= %6d ", frame_size);
570 /* compute pts value */
571 ti1 = ost->sync_opts * av_q2d(enc->time_base);
572 if (ti1 < 0.01)
573 ti1 = 0.01;
574
575 bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
576 avg_bitrate = (double)(ost->data_size * 8) / ti1 / 1000.0;
577 fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
578 (double)ost->data_size / 1024, ti1, bitrate, avg_bitrate);
579 #if FF_API_CODED_FRAME
580 FF_DISABLE_DEPRECATION_WARNINGS
581 fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
582 FF_ENABLE_DEPRECATION_WARNINGS
583 #endif
584 }
585 }
586
587 /*
588 * Read one frame for lavfi output for ost and encode it.
589 */
590 static int poll_filter(OutputStream *ost)
591 {
592 OutputFile *of = output_files[ost->file_index];
593 AVFrame *filtered_frame = NULL;
594 int frame_size, ret;
595
596 if (!ost->filtered_frame && !(ost->filtered_frame = av_frame_alloc())) {
597 return AVERROR(ENOMEM);
598 }
599 filtered_frame = ost->filtered_frame;
600
601 if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
602 !(ost->enc->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE))
603 ret = av_buffersink_get_samples(ost->filter->filter, filtered_frame,
604 ost->enc_ctx->frame_size);
605 else
606 ret = av_buffersink_get_frame(ost->filter->filter, filtered_frame);
607
608 if (ret < 0)
609 return ret;
610
611 if (filtered_frame->pts != AV_NOPTS_VALUE) {
612 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
613 filtered_frame->pts = av_rescale_q(filtered_frame->pts,
614 ost->filter->filter->inputs[0]->time_base,
615 ost->enc_ctx->time_base) -
616 av_rescale_q(start_time,
617 AV_TIME_BASE_Q,
618 ost->enc_ctx->time_base);
619 }
620
621 switch (ost->filter->filter->inputs[0]->type) {
622 case AVMEDIA_TYPE_VIDEO:
623 if (!ost->frame_aspect_ratio)
624 ost->enc_ctx->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
625
626 do_video_out(of->ctx, ost, filtered_frame, &frame_size);
627 if (vstats_filename && frame_size)
628 do_video_stats(ost, frame_size);
629 break;
630 case AVMEDIA_TYPE_AUDIO:
631 do_audio_out(of->ctx, ost, filtered_frame);
632 break;
633 default:
634 // TODO support subtitle filters
635 av_assert0(0);
636 }
637
638 av_frame_unref(filtered_frame);
639
640 return 0;
641 }
642
643 static void finish_output_stream(OutputStream *ost)
644 {
645 OutputFile *of = output_files[ost->file_index];
646 int i;
647
648 ost->finished = 1;
649
650 if (of->shortest) {
651 for (i = 0; i < of->ctx->nb_streams; i++)
652 output_streams[of->ost_index + i]->finished = 1;
653 }
654 }
655
656 /*
657 * Read as many frames from possible from lavfi and encode them.
658 *
659 * Always read from the active stream with the lowest timestamp. If no frames
660 * are available for it then return EAGAIN and wait for more input. This way we
661 * can use lavfi sources that generate unlimited amount of frames without memory
662 * usage exploding.
663 */
664 static int poll_filters(void)
665 {
666 int i, ret = 0;
667
668 while (ret >= 0 && !received_sigterm) {
669 OutputStream *ost = NULL;
670 int64_t min_pts = INT64_MAX;
671
672 /* choose output stream with the lowest timestamp */
673 for (i = 0; i < nb_output_streams; i++) {
674 int64_t pts = output_streams[i]->sync_opts;
675
676 if (!output_streams[i]->filter || output_streams[i]->finished)
677 continue;
678
679 pts = av_rescale_q(pts, output_streams[i]->enc_ctx->time_base,
680 AV_TIME_BASE_Q);
681 if (pts < min_pts) {
682 min_pts = pts;
683 ost = output_streams[i];
684 }
685 }
686
687 if (!ost)
688 break;
689
690 ret = poll_filter(ost);
691
692 if (ret == AVERROR_EOF) {
693 finish_output_stream(ost);
694 ret = 0;
695 } else if (ret == AVERROR(EAGAIN))
696 return 0;
697 }
698
699 return ret;
700 }
701
702 static void print_final_stats(int64_t total_size)
703 {
704 uint64_t video_size = 0, audio_size = 0, extra_size = 0, other_size = 0;
705 uint64_t data_size = 0;
706 float percent = -1.0;
707 int i, j;
708
709 for (i = 0; i < nb_output_streams; i++) {
710 OutputStream *ost = output_streams[i];
711 switch (ost->enc_ctx->codec_type) {
712 case AVMEDIA_TYPE_VIDEO: video_size += ost->data_size; break;
713 case AVMEDIA_TYPE_AUDIO: audio_size += ost->data_size; break;
714 default: other_size += ost->data_size; break;
715 }
716 extra_size += ost->enc_ctx->extradata_size;
717 data_size += ost->data_size;
718 }
719
720 if (data_size && total_size >= data_size)
721 percent = 100.0 * (total_size - data_size) / data_size;
722
723 av_log(NULL, AV_LOG_INFO, "\n");
724 av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB other streams:%1.0fkB global headers:%1.0fkB muxing overhead: ",
725 video_size / 1024.0,
726 audio_size / 1024.0,
727 other_size / 1024.0,
728 extra_size / 1024.0);
729 if (percent >= 0.0)
730 av_log(NULL, AV_LOG_INFO, "%f%%", percent);
731 else
732 av_log(NULL, AV_LOG_INFO, "unknown");
733 av_log(NULL, AV_LOG_INFO, "\n");
734
735 /* print verbose per-stream stats */
736 for (i = 0; i < nb_input_files; i++) {
737 InputFile *f = input_files[i];
738 uint64_t total_packets = 0, total_size = 0;
739
740 av_log(NULL, AV_LOG_VERBOSE, "Input file #%d (%s):\n",
741 i, f->ctx->filename);
742
743 for (j = 0; j < f->nb_streams; j++) {
744 InputStream *ist = input_streams[f->ist_index + j];
745 enum AVMediaType type = ist->dec_ctx->codec_type;
746
747 total_size += ist->data_size;
748 total_packets += ist->nb_packets;
749
750 av_log(NULL, AV_LOG_VERBOSE, " Input stream #%d:%d (%s): ",
751 i, j, media_type_string(type));
752 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets read (%"PRIu64" bytes); ",
753 ist->nb_packets, ist->data_size);
754
755 if (ist->decoding_needed) {
756 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames decoded",
757 ist->frames_decoded);
758 if (type == AVMEDIA_TYPE_AUDIO)
759 av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ist->samples_decoded);
760 av_log(NULL, AV_LOG_VERBOSE, "; ");
761 }
762
763 av_log(NULL, AV_LOG_VERBOSE, "\n");
764 }
765
766 av_log(NULL, AV_LOG_VERBOSE, " Total: %"PRIu64" packets (%"PRIu64" bytes) demuxed\n",
767 total_packets, total_size);
768 }
769
770 for (i = 0; i < nb_output_files; i++) {
771 OutputFile *of = output_files[i];
772 uint64_t total_packets = 0, total_size = 0;
773
774 av_log(NULL, AV_LOG_VERBOSE, "Output file #%d (%s):\n",
775 i, of->ctx->filename);
776
777 for (j = 0; j < of->ctx->nb_streams; j++) {
778 OutputStream *ost = output_streams[of->ost_index + j];
779 enum AVMediaType type = ost->enc_ctx->codec_type;
780
781 total_size += ost->data_size;
782 total_packets += ost->packets_written;
783
784 av_log(NULL, AV_LOG_VERBOSE, " Output stream #%d:%d (%s): ",
785 i, j, media_type_string(type));
786 if (ost->encoding_needed) {
787 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames encoded",
788 ost->frames_encoded);
789 if (type == AVMEDIA_TYPE_AUDIO)
790 av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ost->samples_encoded);
791 av_log(NULL, AV_LOG_VERBOSE, "; ");
792 }
793
794 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets muxed (%"PRIu64" bytes); ",
795 ost->packets_written, ost->data_size);
796
797 av_log(NULL, AV_LOG_VERBOSE, "\n");
798 }
799
800 av_log(NULL, AV_LOG_VERBOSE, " Total: %"PRIu64" packets (%"PRIu64" bytes) muxed\n",
801 total_packets, total_size);
802 }
803 }
804
805 static void print_report(int is_last_report, int64_t timer_start)
806 {
807 char buf[1024];
808 OutputStream *ost;
809 AVFormatContext *oc;
810 int64_t total_size;
811 AVCodecContext *enc;
812 int frame_number, vid, i;
813 double bitrate, ti1, pts;
814 static int64_t last_time = -1;
815 static int qp_histogram[52];
816
817 if (!print_stats && !is_last_report)
818 return;
819
820 if (!is_last_report) {
821 int64_t cur_time;
822 /* display the report every 0.5 seconds */
823 cur_time = av_gettime_relative();
824 if (last_time == -1) {
825 last_time = cur_time;
826 return;
827 }
828 if ((cur_time - last_time) < 500000)
829 return;
830 last_time = cur_time;
831 }
832
833
834 oc = output_files[0]->ctx;
835
836 total_size = avio_size(oc->pb);
837 if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
838 total_size = avio_tell(oc->pb);
839 if (total_size < 0) {
840 char errbuf[128];
841 av_strerror(total_size, errbuf, sizeof(errbuf));
842 av_log(NULL, AV_LOG_VERBOSE, "Bitrate not available, "
843 "avio_tell() failed: %s\n", errbuf);
844 total_size = 0;
845 }
846
847 buf[0] = '\0';
848 ti1 = 1e10;
849 vid = 0;
850 for (i = 0; i < nb_output_streams; i++) {
851 float q = -1;
852 ost = output_streams[i];
853 enc = ost->enc_ctx;
854 if (!ost->stream_copy)
855 q = ost->quality / (float) FF_QP2LAMBDA;
856
857 if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
858 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
859 }
860 if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
861 float t = (av_gettime_relative() - timer_start) / 1000000.0;
862
863 frame_number = ost->frame_number;
864 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
865 frame_number, (t > 1) ? (int)(frame_number / t + 0.5) : 0, q);
866 if (is_last_report)
867 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
868 if (qp_hist) {
869 int j;
870 int qp = lrintf(q);
871 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
872 qp_histogram[qp]++;
873 for (j = 0; j < 32; j++)
874 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
875 }
876
877 #if FF_API_CODED_FRAME
878 FF_DISABLE_DEPRECATION_WARNINGS
879 if (enc->flags & AV_CODEC_FLAG_PSNR) {
880 int j;
881 double error, error_sum = 0;
882 double scale, scale_sum = 0;
883 char type[3] = { 'Y','U','V' };
884 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
885 for (j = 0; j < 3; j++) {
886 if (is_last_report) {
887 error = enc->error[j];
888 scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
889 } else {
890 error = enc->coded_frame->error[j];
891 scale = enc->width * enc->height * 255.0 * 255.0;
892 }
893 if (j)
894 scale /= 4;
895 error_sum += error;
896 scale_sum += scale;
897 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
898 }
899 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
900 }
901 FF_ENABLE_DEPRECATION_WARNINGS
902 #endif
903 vid = 1;
904 }
905 /* compute min output value */
906 pts = (double)ost->last_mux_dts * av_q2d(ost->st->time_base);
907 if ((pts < ti1) && (pts > 0))
908 ti1 = pts;
909 }
910 if (ti1 < 0.01)
911 ti1 = 0.01;
912
913 bitrate = (double)(total_size * 8) / ti1 / 1000.0;
914
915 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
916 "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
917 (double)total_size / 1024, ti1, bitrate);
918
919 if (nb_frames_drop)
920 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " drop=%d",
921 nb_frames_drop);
922
923 av_log(NULL, AV_LOG_INFO, "%s \r", buf);
924
925 fflush(stderr);
926
927 if (is_last_report)
928 print_final_stats(total_size);
929
930 }
931
932 static void flush_encoders(void)
933 {
934 int i, ret;
935
936 for (i = 0; i < nb_output_streams; i++) {
937 OutputStream *ost = output_streams[i];
938 AVCodecContext *enc = ost->enc_ctx;
939 AVFormatContext *os = output_files[ost->file_index]->ctx;
940 int stop_encoding = 0;
941
942 if (!ost->encoding_needed)
943 continue;
944
945 if (enc->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
946 continue;
947
948 for (;;) {
949 int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
950 const char *desc;
951
952 switch (enc->codec_type) {
953 case AVMEDIA_TYPE_AUDIO:
954 encode = avcodec_encode_audio2;
955 desc = "Audio";
956 break;
957 case AVMEDIA_TYPE_VIDEO:
958 encode = avcodec_encode_video2;
959 desc = "Video";
960 break;
961 default:
962 stop_encoding = 1;
963 }
964
965 if (encode) {
966 AVPacket pkt;
967 int got_packet;
968 av_init_packet(&pkt);
969 pkt.data = NULL;
970 pkt.size = 0;
971
972 ret = encode(enc, &pkt, NULL, &got_packet);
973 if (ret < 0) {
974 av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
975 exit_program(1);
976 }
977 if (ost->logfile && enc->stats_out) {
978 fprintf(ost->logfile, "%s", enc->stats_out);
979 }
980 if (!got_packet) {
981 stop_encoding = 1;
982 break;
983 }
984 av_packet_rescale_ts(&pkt, enc->time_base, ost->st->time_base);
985 write_frame(os, &pkt, ost);
986 }
987
988 if (stop_encoding)
989 break;
990 }
991 }
992 }
993
994 /*
995 * Check whether a packet from ist should be written into ost at this time
996 */
997 static int check_output_constraints(InputStream *ist, OutputStream *ost)
998 {
999 OutputFile *of = output_files[ost->file_index];
1000 int ist_index = input_files[ist->file_index]->ist_index + ist->st->index;
1001
1002 if (ost->source_index != ist_index)
1003 return 0;
1004
1005 if (of->start_time != AV_NOPTS_VALUE && ist->last_dts < of->start_time)
1006 return 0;
1007
1008 return 1;
1009 }
1010
1011 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1012 {
1013 OutputFile *of = output_files[ost->file_index];
1014 InputFile *f = input_files [ist->file_index];
1015 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1016 int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1017 AVPacket opkt;
1018
1019 av_init_packet(&opkt);
1020
1021 if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1022 !ost->copy_initial_nonkeyframes)
1023 return;
1024
1025 if (of->recording_time != INT64_MAX &&
1026 ist->last_dts >= of->recording_time + start_time) {
1027 ost->finished = 1;
1028 return;
1029 }
1030
1031 if (f->recording_time != INT64_MAX) {
1032 start_time = f->ctx->start_time;
1033 if (f->start_time != AV_NOPTS_VALUE)
1034 start_time += f->start_time;
1035 if (ist->last_dts >= f->recording_time + start_time) {
1036 ost->finished = 1;
1037 return;
1038 }
1039 }
1040
1041 /* force the input stream PTS */
1042 if (ost->enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO)
1043 ost->sync_opts++;
1044
1045 if (pkt->pts != AV_NOPTS_VALUE)
1046 opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1047 else
1048 opkt.pts = AV_NOPTS_VALUE;
1049
1050 if (pkt->dts == AV_NOPTS_VALUE)
1051 opkt.dts = av_rescale_q(ist->last_dts, AV_TIME_BASE_Q, ost->st->time_base);
1052 else
1053 opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1054 opkt.dts -= ost_tb_start_time;
1055
1056 opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1057 opkt.flags = pkt->flags;
1058
1059 // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1060 if ( ost->enc_ctx->codec_id != AV_CODEC_ID_H264
1061 && ost->enc_ctx->codec_id != AV_CODEC_ID_MPEG1VIDEO
1062 && ost->enc_ctx->codec_id != AV_CODEC_ID_MPEG2VIDEO
1063 && ost->enc_ctx->codec_id != AV_CODEC_ID_VC1
1064 ) {
1065 if (av_parser_change(ost->parser, ost->st->codec,
1066 &opkt.data, &opkt.size,
1067 pkt->data, pkt->size,
1068 pkt->flags & AV_PKT_FLAG_KEY)) {
1069 opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1070 if (!opkt.buf)
1071 exit_program(1);
1072 }
1073 } else {
1074 opkt.data = pkt->data;
1075 opkt.size = pkt->size;
1076 }
1077
1078 write_frame(of->ctx, &opkt, ost);
1079 }
1080
1081 int guess_input_channel_layout(InputStream *ist)
1082 {
1083 AVCodecContext *dec = ist->dec_ctx;
1084
1085 if (!dec->channel_layout) {
1086 char layout_name[256];
1087
1088 dec->channel_layout = av_get_default_channel_layout(dec->channels);
1089 if (!dec->channel_layout)
1090 return 0;
1091 av_get_channel_layout_string(layout_name, sizeof(layout_name),
1092 dec->channels, dec->channel_layout);
1093 av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for Input Stream "
1094 "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1095 }
1096 return 1;
1097 }
1098
1099 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1100 {
1101 AVFrame *decoded_frame, *f;
1102 AVCodecContext *avctx = ist->dec_ctx;
1103 int i, ret, err = 0, resample_changed;
1104
1105 if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1106 return AVERROR(ENOMEM);
1107 if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1108 return AVERROR(ENOMEM);
1109 decoded_frame = ist->decoded_frame;
1110
1111 ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1112 if (!*got_output || ret < 0)
1113 return ret;
1114
1115 ist->samples_decoded += decoded_frame->nb_samples;
1116 ist->frames_decoded++;
1117
1118 /* if the decoder provides a pts, use it instead of the last packet pts.
1119 the decoder could be delaying output by a packet or more. */
1120 if (decoded_frame->pts != AV_NOPTS_VALUE)
1121 ist->next_dts = decoded_frame->pts;
1122 else if (pkt->pts != AV_NOPTS_VALUE)
1123 decoded_frame->pts = pkt->pts;
1124 pkt->pts = AV_NOPTS_VALUE;
1125
1126 resample_changed = ist->resample_sample_fmt != decoded_frame->format ||
1127 ist->resample_channels != avctx->channels ||
1128 ist->resample_channel_layout != decoded_frame->channel_layout ||
1129 ist->resample_sample_rate != decoded_frame->sample_rate;
1130 if (resample_changed) {
1131 char layout1[64], layout2[64];
1132
1133 if (!guess_input_channel_layout(ist)) {
1134 av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1135 "layout for Input Stream #%d.%d\n", ist->file_index,
1136 ist->st->index);
1137 exit_program(1);
1138 }
1139 decoded_frame->channel_layout = avctx->channel_layout;
1140
1141 av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1142 ist->resample_channel_layout);
1143 av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1144 decoded_frame->channel_layout);
1145
1146 av_log(NULL, AV_LOG_INFO,
1147 "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",
1148 ist->file_index, ist->st->index,
1149 ist->resample_sample_rate, av_get_sample_fmt_name(ist->resample_sample_fmt),
1150 ist->resample_channels, layout1,
1151 decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1152 avctx->channels, layout2);
1153
1154 ist->resample_sample_fmt = decoded_frame->format;
1155 ist->resample_sample_rate = decoded_frame->sample_rate;
1156 ist->resample_channel_layout = decoded_frame->channel_layout;
1157 ist->resample_channels = avctx->channels;
1158
1159 for (i = 0; i < nb_filtergraphs; i++)
1160 if (ist_in_filtergraph(filtergraphs[i], ist) &&
1161 configure_filtergraph(filtergraphs[i]) < 0) {
1162 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1163 exit_program(1);
1164 }
1165 }
1166
1167 if (decoded_frame->pts != AV_NOPTS_VALUE)
1168 decoded_frame->pts = av_rescale_q(decoded_frame->pts,
1169 ist->st->time_base,
1170 (AVRational){1, avctx->sample_rate});
1171 ist->nb_samples = decoded_frame->nb_samples;
1172 for (i = 0; i < ist->nb_filters; i++) {
1173 if (i < ist->nb_filters - 1) {
1174 f = ist->filter_frame;
1175 err = av_frame_ref(f, decoded_frame);
1176 if (err < 0)
1177 break;
1178 } else
1179 f = decoded_frame;
1180
1181 err = av_buffersrc_add_frame(ist->filters[i]->filter, f);
1182 if (err < 0)
1183 break;
1184 }
1185
1186 av_frame_unref(ist->filter_frame);
1187 av_frame_unref(decoded_frame);
1188 return err < 0 ? err : ret;
1189 }
1190
1191 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1192 {
1193 AVFrame *decoded_frame, *f;
1194 int i, ret = 0, err = 0, resample_changed;
1195
1196 if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1197 return AVERROR(ENOMEM);
1198 if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1199 return AVERROR(ENOMEM);
1200 decoded_frame = ist->decoded_frame;
1201
1202 ret = avcodec_decode_video2(ist->dec_ctx,
1203 decoded_frame, got_output, pkt);
1204 if (!*got_output || ret < 0)
1205 return ret;
1206
1207 ist->frames_decoded++;
1208
1209 if (ist->hwaccel_retrieve_data && decoded_frame->format == ist->hwaccel_pix_fmt) {
1210 err = ist->hwaccel_retrieve_data(ist->dec_ctx, decoded_frame);
1211 if (err < 0)
1212 goto fail;
1213 }
1214 ist->hwaccel_retrieved_pix_fmt = decoded_frame->format;
1215
1216 decoded_frame->pts = guess_correct_pts(&ist->pts_ctx, decoded_frame->pkt_pts,
1217 decoded_frame->pkt_dts);
1218 pkt->size = 0;
1219
1220 if (ist->st->sample_aspect_ratio.num)
1221 decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1222
1223 resample_changed = ist->resample_width != decoded_frame->width ||
1224 ist->resample_height != decoded_frame->height ||
1225 ist->resample_pix_fmt != decoded_frame->format;
1226 if (resample_changed) {
1227 av_log(NULL, AV_LOG_INFO,
1228 "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1229 ist->file_index, ist->st->index,
1230 ist->resample_width, ist->resample_height, av_get_pix_fmt_name(ist->resample_pix_fmt),
1231 decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1232
1233 ret = poll_filters();
1234 if (ret < 0 && ret != AVERROR_EOF) {
1235 char errbuf[128];
1236 av_strerror(ret, errbuf, sizeof(errbuf));
1237
1238 av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n", errbuf);
1239 }
1240
1241 ist->resample_width = decoded_frame->width;
1242 ist->resample_height = decoded_frame->height;
1243 ist->resample_pix_fmt = decoded_frame->format;
1244
1245 for (i = 0; i < nb_filtergraphs; i++)
1246 if (ist_in_filtergraph(filtergraphs[i], ist) &&
1247 configure_filtergraph(filtergraphs[i]) < 0) {
1248 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1249 exit_program(1);
1250 }
1251 }
1252
1253 for (i = 0; i < ist->nb_filters; i++) {
1254 if (i < ist->nb_filters - 1) {
1255 f = ist->filter_frame;
1256 err = av_frame_ref(f, decoded_frame);
1257 if (err < 0)
1258 break;
1259 } else
1260 f = decoded_frame;
1261
1262 err = av_buffersrc_add_frame(ist->filters[i]->filter, f);
1263 if (err < 0)
1264 break;
1265 }
1266
1267 fail:
1268 av_frame_unref(ist->filter_frame);
1269 av_frame_unref(decoded_frame);
1270 return err < 0 ? err : ret;
1271 }
1272
1273 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1274 {
1275 AVSubtitle subtitle;
1276 int i, ret = avcodec_decode_subtitle2(ist->dec_ctx,
1277 &subtitle, got_output, pkt);
1278 if (ret < 0)
1279 return ret;
1280 if (!*got_output)
1281 return ret;
1282
1283 ist->frames_decoded++;
1284
1285 for (i = 0; i < nb_output_streams; i++) {
1286 OutputStream *ost = output_streams[i];
1287
1288 if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1289 continue;
1290
1291 do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pkt->pts);
1292 }
1293
1294 avsubtitle_free(&subtitle);
1295 return ret;
1296 }
1297
1298 static int send_filter_eof(InputStream *ist)
1299 {
1300 int i, ret;
1301 for (i = 0; i < ist->nb_filters; i++) {
1302 ret = av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1303 if (ret < 0)
1304 return ret;
1305 }
1306 return 0;
1307 }
1308
1309 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1310 static void process_input_packet(InputStream *ist, const AVPacket *pkt, int no_eof)
1311 {
1312 int i;
1313 int got_output;
1314 AVPacket avpkt;
1315
1316 if (ist->next_dts == AV_NOPTS_VALUE)
1317 ist->next_dts = ist->last_dts;
1318
1319 if (!pkt) {
1320 /* EOF handling */
1321 av_init_packet(&avpkt);
1322 avpkt.data = NULL;
1323 avpkt.size = 0;
1324 goto handle_eof;
1325 } else {
1326 avpkt = *pkt;
1327 }
1328
1329 if (pkt->dts != AV_NOPTS_VALUE)
1330 ist->next_dts = ist->last_dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1331
1332 // while we have more to decode or while the decoder did output something on EOF
1333 while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1334 int ret = 0;
1335 handle_eof:
1336
1337 ist->last_dts = ist->next_dts;
1338
1339 if (avpkt.size && avpkt.size != pkt->size &&
1340 !(ist->dec->capabilities & AV_CODEC_CAP_SUBFRAMES)) {
1341 av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1342 "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1343 ist->showed_multi_packet_warning = 1;
1344 }
1345
1346 switch (ist->dec_ctx->codec_type) {
1347 case AVMEDIA_TYPE_AUDIO:
1348 ret = decode_audio (ist, &avpkt, &got_output);
1349 break;
1350 case AVMEDIA_TYPE_VIDEO:
1351 ret = decode_video (ist, &avpkt, &got_output);
1352 if (avpkt.duration)
1353 ist->next_dts += av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1354 else if (ist->st->avg_frame_rate.num)
1355 ist->next_dts += av_rescale_q(1, av_inv_q(ist->st->avg_frame_rate),
1356 AV_TIME_BASE_Q);
1357 else if (ist->dec_ctx->framerate.num != 0) {
1358 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 :
1359 ist->dec_ctx->ticks_per_frame;
1360 ist->next_dts += av_rescale_q(ticks, ist->dec_ctx->framerate, AV_TIME_BASE_Q);
1361 }
1362 break;
1363 case AVMEDIA_TYPE_SUBTITLE:
1364 ret = transcode_subtitles(ist, &avpkt, &got_output);
1365 break;
1366 default:
1367 return;
1368 }
1369
1370 if (ret < 0) {
1371 av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
1372 ist->file_index, ist->st->index);
1373 if (exit_on_error)
1374 exit_program(1);
1375 break;
1376 }
1377
1378 // touch data and size only if not EOF
1379 if (pkt) {
1380 avpkt.data += ret;
1381 avpkt.size -= ret;
1382 }
1383 if (!got_output) {
1384 continue;
1385 }
1386 }
1387
1388 /* after flushing, send an EOF on all the filter inputs attached to the stream */
1389 /* except when looping we need to flush but not to send an EOF */
1390 if (!pkt && ist->decoding_needed && !no_eof) {
1391 int ret = send_filter_eof(ist);
1392 if (ret < 0) {
1393 av_log(NULL, AV_LOG_FATAL, "Error marking filters as finished\n");
1394 exit_program(1);
1395 }
1396 }
1397
1398 /* handle stream copy */
1399 if (!ist->decoding_needed) {
1400 ist->last_dts = ist->next_dts;
1401 switch (ist->dec_ctx->codec_type) {
1402 case AVMEDIA_TYPE_AUDIO:
1403 ist->next_dts += ((int64_t)AV_TIME_BASE * ist->dec_ctx->frame_size) /
1404 ist->dec_ctx->sample_rate;
1405 break;
1406 case AVMEDIA_TYPE_VIDEO:
1407 if (ist->dec_ctx->framerate.num != 0) {
1408 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->dec_ctx->ticks_per_frame;
1409 ist->next_dts += ((int64_t)AV_TIME_BASE *
1410 ist->dec_ctx->framerate.den * ticks) /
1411 ist->dec_ctx->framerate.num;
1412 }
1413 break;
1414 }
1415 }
1416 for (i = 0; pkt && i < nb_output_streams; i++) {
1417 OutputStream *ost = output_streams[i];
1418
1419 if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1420 continue;
1421
1422 do_streamcopy(ist, ost, pkt);
1423 }
1424
1425 return;
1426 }
1427
1428 static void print_sdp(void)
1429 {
1430 char sdp[16384];
1431 int i;
1432 AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1433
1434 if (!avc)
1435 exit_program(1);
1436 for (i = 0; i < nb_output_files; i++)
1437 avc[i] = output_files[i]->ctx;
1438
1439 av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1440 printf("SDP:\n%s\n", sdp);
1441 fflush(stdout);
1442 av_freep(&avc);
1443 }
1444
1445 static const HWAccel *get_hwaccel(enum AVPixelFormat pix_fmt)
1446 {
1447 int i;
1448 for (i = 0; hwaccels[i].name; i++)
1449 if (hwaccels[i].pix_fmt == pix_fmt)
1450 return &hwaccels[i];
1451 return NULL;
1452 }
1453
1454 static enum AVPixelFormat get_format(AVCodecContext *s, const enum AVPixelFormat *pix_fmts)
1455 {
1456 InputStream *ist = s->opaque;
1457 const enum AVPixelFormat *p;
1458 int ret;
1459
1460 for (p = pix_fmts; *p != -1; p++) {
1461 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(*p);
1462 const HWAccel *hwaccel;
1463
1464 if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
1465 break;
1466
1467 hwaccel = get_hwaccel(*p);
1468 if (!hwaccel ||
1469 (ist->active_hwaccel_id && ist->active_hwaccel_id != hwaccel->id) ||
1470 (ist->hwaccel_id != HWACCEL_AUTO && ist->hwaccel_id != hwaccel->id))
1471 continue;
1472
1473 ret = hwaccel->init(s);
1474 if (ret < 0) {
1475 if (ist->hwaccel_id == hwaccel->id) {
1476 av_log(NULL, AV_LOG_FATAL,
1477 "%s hwaccel requested for input stream #%d:%d, "
1478 "but cannot be initialized.\n", hwaccel->name,
1479 ist->file_index, ist->st->index);
1480 return AV_PIX_FMT_NONE;
1481 }
1482 continue;
1483 }
1484 ist->active_hwaccel_id = hwaccel->id;
1485 ist->hwaccel_pix_fmt = *p;
1486 break;
1487 }
1488
1489 return *p;
1490 }
1491
1492 static int get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
1493 {
1494 InputStream *ist = s->opaque;
1495
1496 if (ist->hwaccel_get_buffer && frame->format == ist->hwaccel_pix_fmt)
1497 return ist->hwaccel_get_buffer(s, frame, flags);
1498
1499 return avcodec_default_get_buffer2(s, frame, flags);
1500 }
1501
1502 static int init_input_stream(int ist_index, char *error, int error_len)
1503 {
1504 int ret;
1505 InputStream *ist = input_streams[ist_index];
1506 if (ist->decoding_needed) {
1507 AVCodec *codec = ist->dec;
1508 if (!codec) {
1509 snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d:%d",
1510 ist->dec_ctx->codec_id, ist->file_index, ist->st->index);
1511 return AVERROR(EINVAL);
1512 }
1513
1514 ist->dec_ctx->opaque = ist;
1515 ist->dec_ctx->get_format = get_format;
1516 ist->dec_ctx->get_buffer2 = get_buffer;
1517 ist->dec_ctx->thread_safe_callbacks = 1;
1518
1519 av_opt_set_int(ist->dec_ctx, "refcounted_frames", 1, 0);
1520
1521 if (!av_dict_get(ist->decoder_opts, "threads", NULL, 0))
1522 av_dict_set(&ist->decoder_opts, "threads", "auto", 0);
1523 if ((ret = avcodec_open2(ist->dec_ctx, codec, &ist->decoder_opts)) < 0) {
1524 char errbuf[128];
1525 if (ret == AVERROR_EXPERIMENTAL)
1526 abort_codec_experimental(codec, 0);
1527
1528 av_strerror(ret, errbuf, sizeof(errbuf));
1529
1530 snprintf(error, error_len,
1531 "Error while opening decoder for input stream "
1532 "#%d:%d : %s",
1533 ist->file_index, ist->st->index, errbuf);
1534 return ret;
1535 }
1536 assert_avoptions(ist->decoder_opts);
1537 }
1538
1539 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;
1540 ist->next_dts = AV_NOPTS_VALUE;
1541 init_pts_correction(&ist->pts_ctx);
1542
1543 return 0;
1544 }
1545
1546 static InputStream *get_input_stream(OutputStream *ost)
1547 {
1548 if (ost->source_index >= 0)
1549 return input_streams[ost->source_index];
1550
1551 if (ost->filter) {
1552 FilterGraph *fg = ost->filter->graph;
1553 int i;
1554
1555 for (i = 0; i < fg->nb_inputs; i++)
1556 if (fg->inputs[i]->ist->dec_ctx->codec_type == ost->enc_ctx->codec_type)
1557 return fg->inputs[i]->ist;
1558 }
1559
1560 return NULL;
1561 }
1562
1563 static int init_output_stream(OutputStream *ost, char *error, int error_len)
1564 {
1565 int ret = 0;
1566
1567 if (ost->encoding_needed) {
1568 AVCodec *codec = ost->enc;
1569 AVCodecContext *dec = NULL;
1570 InputStream *ist;
1571
1572 if ((ist = get_input_stream(ost)))
1573 dec = ist->dec_ctx;
1574 if (dec && dec->subtitle_header) {
1575 ost->enc_ctx->subtitle_header = av_malloc(dec->subtitle_header_size);
1576 if (!ost->enc_ctx->subtitle_header)
1577 return AVERROR(ENOMEM);
1578 memcpy(ost->enc_ctx->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
1579 ost->enc_ctx->subtitle_header_size = dec->subtitle_header_size;
1580 }
1581 if (!av_dict_get(ost->encoder_opts, "threads", NULL, 0))
1582 av_dict_set(&ost->encoder_opts, "threads", "auto", 0);
1583
1584 if (ost->filter && ost->filter->filter->inputs[0]->hw_frames_ctx) {
1585 ost->enc_ctx->hw_frames_ctx = av_buffer_ref(ost->filter->filter->inputs[0]->hw_frames_ctx);
1586 if (!ost->enc_ctx->hw_frames_ctx)
1587 return AVERROR(ENOMEM);
1588 }
1589
1590 if ((ret = avcodec_open2(ost->enc_ctx, codec, &ost->encoder_opts)) < 0) {
1591 if (ret == AVERROR_EXPERIMENTAL)
1592 abort_codec_experimental(codec, 1);
1593 snprintf(error, error_len,
1594 "Error while opening encoder for output stream #%d:%d - "
1595 "maybe incorrect parameters such as bit_rate, rate, width or height",
1596 ost->file_index, ost->index);
1597 return ret;
1598 }
1599 assert_avoptions(ost->encoder_opts);
1600 if (ost->enc_ctx->bit_rate && ost->enc_ctx->bit_rate < 1000)
1601 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
1602 "It takes bits/s as argument, not kbits/s\n");
1603
1604 ret = avcodec_copy_context(ost->st->codec, ost->enc_ctx);
1605 if (ret < 0) {
1606 av_log(NULL, AV_LOG_FATAL,
1607 "Error initializing the output stream codec context.\n");
1608 exit_program(1);
1609 }
1610
1611 if (ost->enc_ctx->nb_coded_side_data) {
1612 int i;
1613
1614 ost->st->side_data = av_realloc_array(NULL, ost->enc_ctx->nb_coded_side_data,
1615 sizeof(*ost->st->side_data));
1616 if (!ost->st->side_data)
1617 return AVERROR(ENOMEM);
1618
1619 for (i = 0; i < ost->enc_ctx->nb_coded_side_data; i++) {
1620 const AVPacketSideData *sd_src = &ost->enc_ctx->coded_side_data[i];
1621 AVPacketSideData *sd_dst = &ost->st->side_data[i];
1622
1623 sd_dst->data = av_malloc(sd_src->size);
1624 if (!sd_dst->data)
1625 return AVERROR(ENOMEM);
1626 memcpy(sd_dst->data, sd_src->data, sd_src->size);
1627 sd_dst->size = sd_src->size;
1628 sd_dst->type = sd_src->type;
1629 ost->st->nb_side_data++;
1630 }
1631 }
1632
1633 ost->st->time_base = ost->enc_ctx->time_base;
1634 } else {
1635 ret = av_opt_set_dict(ost->enc_ctx, &ost->encoder_opts);
1636 if (ret < 0)
1637 return ret;
1638 ost->st->time_base = ost->st->codec->time_base;
1639 }
1640
1641 return ret;
1642 }
1643
1644 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1645 AVCodecContext *avctx)
1646 {
1647 char *p;
1648 int n = 1, i;
1649 int64_t t;
1650
1651 for (p = kf; *p; p++)
1652 if (*p == ',')
1653 n++;
1654 ost->forced_kf_count = n;
1655 ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1656 if (!ost->forced_kf_pts) {
1657 av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1658 exit_program(1);
1659 }
1660
1661 p = kf;
1662 for (i = 0; i < n; i++) {
1663 char *next = strchr(p, ',');
1664
1665 if (next)
1666 *next++ = 0;
1667
1668 t = parse_time_or_die("force_key_frames", p, 1);
1669 ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1670
1671 p = next;
1672 }
1673 }
1674
1675 static void set_encoder_id(OutputFile *of, OutputStream *ost)
1676 {
1677 AVDictionaryEntry *e;
1678
1679 uint8_t *encoder_string;
1680 int encoder_string_len;
1681 int format_flags = 0;
1682
1683 e = av_dict_get(of->opts, "fflags", NULL, 0);
1684 if (e) {
1685 const AVOption *o = av_opt_find(of->ctx, "fflags", NULL, 0, 0);
1686 if (!o)
1687 return;
1688 av_opt_eval_flags(of->ctx, o, e->value, &format_flags);
1689 }
1690
1691 encoder_string_len = sizeof(LIBAVCODEC_IDENT) + strlen(ost->enc->name) + 2;
1692 encoder_string = av_mallocz(encoder_string_len);
1693 if (!encoder_string)
1694 exit_program(1);
1695
1696 if (!(format_flags & AVFMT_FLAG_BITEXACT))
1697 av_strlcpy(encoder_string, LIBAVCODEC_IDENT " ", encoder_string_len);
1698 av_strlcat(encoder_string, ost->enc->name, encoder_string_len);
1699 av_dict_set(&ost->st->metadata, "encoder", encoder_string,
1700 AV_DICT_DONT_STRDUP_VAL | AV_DICT_DONT_OVERWRITE);
1701 }
1702
1703 static int transcode_init(void)
1704 {
1705 int ret = 0, i, j, k;
1706 AVFormatContext *oc;
1707 OutputStream *ost;
1708 InputStream *ist;
1709 char error[1024];
1710 int want_sdp = 1;
1711
1712 /* init framerate emulation */
1713 for (i = 0; i < nb_input_files; i++) {
1714 InputFile *ifile = input_files[i];
1715 if (ifile->rate_emu)
1716 for (j = 0; j < ifile->nb_streams; j++)
1717 input_streams[j + ifile->ist_index]->start = av_gettime_relative();
1718 }
1719
1720 /* for each output stream, we compute the right encoding parameters */
1721 for (i = 0; i < nb_output_streams; i++) {
1722 AVCodecContext *enc_ctx;
1723 AVCodecContext *dec_ctx = NULL;
1724 ost = output_streams[i];
1725 oc = output_files[ost->file_index]->ctx;
1726 ist = get_input_stream(ost);
1727
1728 if (ost->attachment_filename)
1729 continue;
1730
1731 enc_ctx = ost->stream_copy ? ost->st->codec : ost->enc_ctx;
1732
1733 if (ist) {
1734 dec_ctx = ist->dec_ctx;
1735
1736 ost->st->disposition = ist->st->disposition;
1737 enc_ctx->bits_per_raw_sample = dec_ctx->bits_per_raw_sample;
1738 enc_ctx->chroma_sample_location = dec_ctx->chroma_sample_location;
1739 }
1740
1741 if (ost->stream_copy) {
1742 AVRational sar;
1743 uint64_t extra_size;
1744
1745 av_assert0(ist && !ost->filter);
1746
1747 extra_size = (uint64_t)dec_ctx->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE;
1748
1749 if (extra_size > INT_MAX) {
1750 return AVERROR(EINVAL);
1751 }
1752
1753 /* if stream_copy is selected, no need to decode or encode */
1754 enc_ctx->codec_id = dec_ctx->codec_id;
1755 enc_ctx->codec_type = dec_ctx->codec_type;
1756
1757 if (!enc_ctx->codec_tag) {
1758 if (!oc->oformat->codec_tag ||
1759 av_codec_get_id (oc->oformat->codec_tag, dec_ctx->codec_tag) == enc_ctx->codec_id ||
1760 av_codec_get_tag(oc->oformat->codec_tag, dec_ctx->codec_id) <= 0)
1761 enc_ctx->codec_tag = dec_ctx->codec_tag;
1762 }
1763
1764 enc_ctx->bit_rate = dec_ctx->bit_rate;
1765 enc_ctx->rc_max_rate = dec_ctx->rc_max_rate;
1766 enc_ctx->rc_buffer_size = dec_ctx->rc_buffer_size;
1767 enc_ctx->field_order = dec_ctx->field_order;
1768 enc_ctx->extradata = av_mallocz(extra_size);
1769 if (!enc_ctx->extradata) {
1770 return AVERROR(ENOMEM);
1771 }
1772 memcpy(enc_ctx->extradata, dec_ctx->extradata, dec_ctx->extradata_size);
1773 enc_ctx->extradata_size = dec_ctx->extradata_size;
1774 if (!copy_tb) {
1775 enc_ctx->time_base = dec_ctx->time_base;
1776 enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
1777 av_reduce(&enc_ctx->time_base.num, &enc_ctx->time_base.den,
1778 enc_ctx->time_base.num, enc_ctx->time_base.den, INT_MAX);
1779 } else
1780 enc_ctx->time_base = ist->st->time_base;
1781
1782 if (ist->st->nb_side_data) {
1783 ost->st->side_data = av_realloc_array(NULL, ist->st->nb_side_data,
1784 sizeof(*ist->st->side_data));
1785 if (!ost->st->side_data)
1786 return AVERROR(ENOMEM);
1787
1788 for (j = 0; j < ist->st->nb_side_data; j++) {
1789 const AVPacketSideData *sd_src = &ist->st->side_data[j];
1790 AVPacketSideData *sd_dst = &ost->st->side_data[j];
1791
1792 sd_dst->data = av_malloc(sd_src->size);
1793 if (!sd_dst->data)
1794 return AVERROR(ENOMEM);
1795 memcpy(sd_dst->data, sd_src->data, sd_src->size);
1796 sd_dst->size = sd_src->size;
1797 sd_dst->type = sd_src->type;
1798 ost->st->nb_side_data++;
1799 }
1800 }
1801
1802 ost->parser = av_parser_init(enc_ctx->codec_id);
1803
1804 switch (enc_ctx->codec_type) {
1805 case AVMEDIA_TYPE_AUDIO:
1806 if (audio_volume != 256) {
1807 av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
1808 exit_program(1);
1809 }
1810 enc_ctx->channel_layout = dec_ctx->channel_layout;
1811 enc_ctx->sample_rate = dec_ctx->sample_rate;
1812 enc_ctx->channels = dec_ctx->channels;
1813 enc_ctx->frame_size = dec_ctx->frame_size;
1814 enc_ctx->audio_service_type = dec_ctx->audio_service_type;
1815 enc_ctx->block_align = dec_ctx->block_align;
1816 break;
1817 case AVMEDIA_TYPE_VIDEO:
1818 enc_ctx->pix_fmt = dec_ctx->pix_fmt;
1819 enc_ctx->width = dec_ctx->width;
1820 enc_ctx->height = dec_ctx->height;
1821 enc_ctx->has_b_frames = dec_ctx->has_b_frames;
1822 if (ost->frame_aspect_ratio)
1823 sar = av_d2q(ost->frame_aspect_ratio * enc_ctx->height / enc_ctx->width, 255);
1824 else if (ist->st->sample_aspect_ratio.num)
1825 sar = ist->st->sample_aspect_ratio;
1826 else
1827 sar = dec_ctx->sample_aspect_ratio;
1828 ost->st->sample_aspect_ratio = enc_ctx->sample_aspect_ratio = sar;
1829 break;
1830 case AVMEDIA_TYPE_SUBTITLE:
1831 enc_ctx->width = dec_ctx->width;
1832 enc_ctx->height = dec_ctx->height;
1833 break;
1834 case AVMEDIA_TYPE_DATA:
1835 case AVMEDIA_TYPE_ATTACHMENT:
1836 break;
1837 default:
1838 abort();
1839 }
1840 } else {
1841 if (!ost->enc) {
1842 /* should only happen when a default codec is not present. */
1843 snprintf(error, sizeof(error), "Automatic encoder selection "
1844 "failed for output stream #%d:%d. Default encoder for "
1845 "format %s is probably disabled. Please choose an "
1846 "encoder manually.\n", ost->file_index, ost->index,
1847 oc->oformat->name);
1848 ret = AVERROR(EINVAL);
1849 goto dump_format;
1850 }
1851
1852 set_encoder_id(output_files[ost->file_index], ost);
1853
1854 /*
1855 * We want CFR output if and only if one of those is true:
1856 * 1) user specified output framerate with -r
1857 * 2) user specified -vsync cfr
1858 * 3) output format is CFR and the user didn't force vsync to
1859 * something else than CFR
1860 *
1861 * in such a case, set ost->frame_rate
1862 */
1863 if (enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO &&
1864 !ost->frame_rate.num && ist &&
1865 (video_sync_method == VSYNC_CFR ||
1866 (video_sync_method == VSYNC_AUTO &&
1867 !(oc->oformat->flags & (AVFMT_NOTIMESTAMPS | AVFMT_VARIABLE_FPS))))) {
1868 if (ist->framerate.num)
1869 ost->frame_rate = ist->framerate;
1870 else if (ist->st->avg_frame_rate.num)
1871 ost->frame_rate = ist->st->avg_frame_rate;
1872 else {
1873 av_log(NULL, AV_LOG_WARNING, "Constant framerate requested "
1874 "for the output stream #%d:%d, but no information "
1875 "about the input framerate is available. Falling "
1876 "back to a default value of 25fps. Use the -r option "
1877 "if you want a different framerate.\n",
1878 ost->file_index, ost->index);
1879 ost->frame_rate = (AVRational){ 25, 1 };
1880 }
1881
1882 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
1883 int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
1884 ost->frame_rate = ost->enc->supported_framerates[idx];
1885 }
1886 }
1887
1888 #if CONFIG_LIBMFX
1889 if (qsv_transcode_init(ost))
1890 exit_program(1);
1891 #endif
1892
1893 if (!ost->filter &&
1894 (enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
1895 enc_ctx->codec_type == AVMEDIA_TYPE_AUDIO)) {
1896 FilterGraph *fg;
1897 fg = init_simple_filtergraph(ist, ost);
1898 if (configure_filtergraph(fg)) {
1899 av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
1900 exit_program(1);
1901 }
1902 }
1903
1904 switch (enc_ctx->codec_type) {
1905 case AVMEDIA_TYPE_AUDIO:
1906 enc_ctx->sample_fmt = ost->filter->filter->inputs[0]->format;
1907 enc_ctx->sample_rate = ost->filter->filter->inputs[0]->sample_rate;
1908 enc_ctx->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
1909 enc_ctx->channels = av_get_channel_layout_nb_channels(enc_ctx->channel_layout);
1910 enc_ctx->time_base = (AVRational){ 1, enc_ctx->sample_rate };
1911 break;
1912 case AVMEDIA_TYPE_VIDEO:
1913 enc_ctx->time_base = ost->filter->filter->inputs[0]->time_base;
1914
1915 enc_ctx->width = ost->filter->filter->inputs[0]->w;
1916 enc_ctx->height = ost->filter->filter->inputs[0]->h;
1917 enc_ctx->sample_aspect_ratio = ost->st->sample_aspect_ratio =
1918 ost->frame_aspect_ratio ? // overridden by the -aspect cli option
1919 av_d2q(ost->frame_aspect_ratio * enc_ctx->height/enc_ctx->width, 255) :
1920 ost->filter->filter->inputs[0]->sample_aspect_ratio;
1921 enc_ctx->pix_fmt = ost->filter->filter->inputs[0]->format;
1922
1923 ost->st->avg_frame_rate = ost->frame_rate;
1924
1925 if (dec_ctx &&
1926 (enc_ctx->width != dec_ctx->width ||
1927 enc_ctx->height != dec_ctx->height ||
1928 enc_ctx->pix_fmt != dec_ctx->pix_fmt)) {
1929 enc_ctx->bits_per_raw_sample = 0;
1930 }
1931
1932 if (ost->forced_keyframes)
1933 parse_forced_key_frames(ost->forced_keyframes, ost,
1934 ost->enc_ctx);
1935 break;
1936 case AVMEDIA_TYPE_SUBTITLE:
1937 enc_ctx->time_base = (AVRational){1, 1000};
1938 break;
1939 default:
1940 abort();
1941 break;
1942 }
1943 }
1944 }
1945
1946 /* open each encoder */
1947 for (i = 0; i < nb_output_streams; i++) {
1948 ret = init_output_stream(output_streams[i], error, sizeof(error));
1949 if (ret < 0)
1950 goto dump_format;
1951 }
1952
1953 /* init input streams */
1954 for (i = 0; i < nb_input_streams; i++)
1955 if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
1956 goto dump_format;
1957
1958 /* discard unused programs */
1959 for (i = 0; i < nb_input_files; i++) {
1960 InputFile *ifile = input_files[i];
1961 for (j = 0; j < ifile->ctx->nb_programs; j++) {
1962 AVProgram *p = ifile->ctx->programs[j];
1963 int discard = AVDISCARD_ALL;
1964
1965 for (k = 0; k < p->nb_stream_indexes; k++)
1966 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
1967 discard = AVDISCARD_DEFAULT;
1968 break;
1969 }
1970 p->discard = discard;
1971 }
1972 }
1973
1974 /* open files and write file headers */
1975 for (i = 0; i < nb_output_files; i++) {
1976 oc = output_files[i]->ctx;
1977 oc->interrupt_callback = int_cb;
1978 if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
1979 char errbuf[128];
1980 av_strerror(ret, errbuf, sizeof(errbuf));
1981 snprintf(error, sizeof(error),
1982 "Could not write header for output file #%d "
1983 "(incorrect codec parameters ?): %s",
1984 i, errbuf);
1985 ret = AVERROR(EINVAL);
1986 goto dump_format;
1987 }
1988 assert_avoptions(output_files[i]->opts);
1989 if (strcmp(oc->oformat->name, "rtp")) {
1990 want_sdp = 0;
1991 }
1992 }
1993
1994 dump_format:
1995 /* dump the file output parameters - cannot be done before in case
1996 of stream copy */
1997 for (i = 0; i < nb_output_files; i++) {
1998 av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
1999 }
2000
2001 /* dump the stream mapping */
2002 av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2003 for (i = 0; i < nb_input_streams; i++) {
2004 ist = input_streams[i];
2005
2006 for (j = 0; j < ist->nb_filters; j++) {
2007 if (ist->filters[j]->graph->graph_desc) {
2008 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d (%s) -> %s",
2009 ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2010 ist->filters[j]->name);
2011 if (nb_filtergraphs > 1)
2012 av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2013 av_log(NULL, AV_LOG_INFO, "\n");
2014 }
2015 }
2016 }
2017
2018 for (i = 0; i < nb_output_streams; i++) {
2019 ost = output_streams[i];
2020
2021 if (ost->attachment_filename) {
2022 /* an attached file */
2023 av_log(NULL, AV_LOG_INFO, " File %s -> Stream #%d:%d\n",
2024 ost->attachment_filename, ost->file_index, ost->index);
2025 continue;
2026 }
2027
2028 if (ost->filter && ost->filter->graph->graph_desc) {
2029 /* output from a complex graph */
2030 av_log(NULL, AV_LOG_INFO, " %s", ost->filter->name);
2031 if (nb_filtergraphs > 1)
2032 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2033
2034 av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2035 ost->index, ost->enc ? ost->enc->name : "?");
2036 continue;
2037 }
2038
2039 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d -> #%d:%d",
2040 input_streams[ost->source_index]->file_index,
2041 input_streams[ost->source_index]->st->index,
2042 ost->file_index,
2043 ost->index);
2044 if (ost->sync_ist != input_streams[ost->source_index])
2045 av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2046 ost->sync_ist->file_index,
2047 ost->sync_ist->st->index);
2048 if (ost->stream_copy)
2049 av_log(NULL, AV_LOG_INFO, " (copy)");
2050 else {
2051 const AVCodec *in_codec = input_streams[ost->source_index]->dec;
2052 const AVCodec *out_codec = ost->enc;
2053 const char *decoder_name = "?";
2054 const char *in_codec_name = "?";
2055 const char *encoder_name = "?";
2056 const char *out_codec_name = "?";
2057 const AVCodecDescriptor *desc;
2058
2059 if (in_codec) {
2060 decoder_name = in_codec->name;
2061 desc = avcodec_descriptor_get(in_codec->id);
2062 if (desc)
2063 in_codec_name = desc->name;
2064 if (!strcmp(decoder_name, in_codec_name))
2065 decoder_name = "native";
2066 }
2067
2068 if (out_codec) {
2069 encoder_name = out_codec->name;
2070 desc = avcodec_descriptor_get(out_codec->id);
2071 if (desc)
2072 out_codec_name = desc->name;
2073 if (!strcmp(encoder_name, out_codec_name))
2074 encoder_name = "native";
2075 }
2076
2077 av_log(NULL, AV_LOG_INFO, " (%s (%s) -> %s (%s))",
2078 in_codec_name, decoder_name,
2079 out_codec_name, encoder_name);
2080 }
2081 av_log(NULL, AV_LOG_INFO, "\n");
2082 }
2083
2084 if (ret) {
2085 av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2086 return ret;
2087 }
2088
2089 if (want_sdp) {
2090 print_sdp();
2091 }
2092
2093 return 0;
2094 }
2095
2096 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2097 static int need_output(void)
2098 {
2099 int i;
2100
2101 for (i = 0; i < nb_output_streams; i++) {
2102 OutputStream *ost = output_streams[i];
2103 OutputFile *of = output_files[ost->file_index];
2104 AVFormatContext *os = output_files[ost->file_index]->ctx;
2105
2106 if (ost->finished ||
2107 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2108 continue;
2109 if (ost->frame_number >= ost->max_frames) {
2110 int j;
2111 for (j = 0; j < of->ctx->nb_streams; j++)
2112 output_streams[of->ost_index + j]->finished = 1;
2113 continue;
2114 }
2115
2116 return 1;
2117 }
2118
2119 return 0;
2120 }
2121
2122 static InputFile *select_input_file(void)
2123 {
2124 InputFile *ifile = NULL;
2125 int64_t ipts_min = INT64_MAX;
2126 int i;
2127
2128 for (i = 0; i < nb_input_streams; i++) {
2129 InputStream *ist = input_streams[i];
2130 int64_t ipts = ist->last_dts;
2131
2132 if (ist->discard || input_files[ist->file_index]->eagain)
2133 continue;
2134 if (!input_files[ist->file_index]->eof_reached) {
2135 if (ipts < ipts_min) {
2136 ipts_min = ipts;
2137 ifile = input_files[ist->file_index];
2138 }
2139 }
2140 }
2141
2142 return ifile;
2143 }
2144
2145 #if HAVE_PTHREADS
2146 static void *input_thread(void *arg)
2147 {
2148 InputFile *f = arg;
2149 int ret = 0;
2150
2151 while (!transcoding_finished && ret >= 0) {
2152 AVPacket pkt;
2153 ret = av_read_frame(f->ctx, &pkt);
2154
2155 if (ret == AVERROR(EAGAIN)) {
2156 av_usleep(10000);
2157 ret = 0;
2158 continue;
2159 } else if (ret < 0)
2160 break;
2161
2162 pthread_mutex_lock(&f->fifo_lock);
2163 while (!av_fifo_space(f->fifo))
2164 pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2165
2166 av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2167
2168 pthread_mutex_unlock(&f->fifo_lock);
2169 }
2170
2171 f->finished = 1;
2172 return NULL;
2173 }
2174
2175 static void free_input_threads(void)
2176 {
2177 int i;
2178
2179 if (nb_input_files == 1)
2180 return;
2181
2182 transcoding_finished = 1;
2183
2184 for (i = 0; i < nb_input_files; i++) {
2185 InputFile *f = input_files[i];
2186 AVPacket pkt;
2187
2188 if (!f->fifo || f->joined)
2189 continue;
2190
2191 pthread_mutex_lock(&f->fifo_lock);
2192 while (av_fifo_size(f->fifo)) {
2193 av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2194 av_packet_unref(&pkt);
2195 }
2196 pthread_cond_signal(&f->fifo_cond);
2197 pthread_mutex_unlock(&f->fifo_lock);
2198
2199 pthread_join(f->thread, NULL);
2200 f->joined = 1;
2201
2202 while (av_fifo_size(f->fifo)) {
2203 av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2204 av_packet_unref(&pkt);
2205 }
2206 av_fifo_free(f->fifo);
2207 }
2208 }
2209
2210 static int init_input_threads(void)
2211 {
2212 int i, ret;
2213
2214 if (nb_input_files == 1)
2215 return 0;
2216
2217 for (i = 0; i < nb_input_files; i++) {
2218 InputFile *f = input_files[i];
2219
2220 if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2221 return AVERROR(ENOMEM);
2222
2223 pthread_mutex_init(&f->fifo_lock, NULL);
2224 pthread_cond_init (&f->fifo_cond, NULL);
2225
2226 if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2227 return AVERROR(ret);
2228 }
2229 return 0;
2230 }
2231
2232 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2233 {
2234 int ret = 0;
2235
2236 pthread_mutex_lock(&f->fifo_lock);
2237
2238 if (av_fifo_size(f->fifo)) {
2239 av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2240 pthread_cond_signal(&f->fifo_cond);
2241 } else {
2242 if (f->finished)
2243 ret = AVERROR_EOF;
2244 else
2245 ret = AVERROR(EAGAIN);
2246 }
2247
2248 pthread_mutex_unlock(&f->fifo_lock);
2249
2250 return ret;
2251 }
2252 #endif
2253
2254 static int get_input_packet(InputFile *f, AVPacket *pkt)
2255 {
2256 if (f->rate_emu) {
2257 int i;
2258 for (i = 0; i < f->nb_streams; i++) {
2259 InputStream *ist = input_streams[f->ist_index + i];
2260 int64_t pts = av_rescale(ist->last_dts, 1000000, AV_TIME_BASE);
2261 int64_t now = av_gettime_relative() - ist->start;
2262 if (pts > now)
2263 return AVERROR(EAGAIN);
2264 }
2265 }
2266
2267 #if HAVE_PTHREADS
2268 if (nb_input_files > 1)
2269 return get_input_packet_mt(f, pkt);
2270 #endif
2271 return av_read_frame(f->ctx, pkt);
2272 }
2273
2274 static int got_eagain(void)
2275 {
2276 int i;
2277 for (i = 0; i < nb_input_files; i++)
2278 if (input_files[i]->eagain)
2279 return 1;
2280 return 0;
2281 }
2282
2283 static void reset_eagain(void)
2284 {
2285 int i;
2286 for (i = 0; i < nb_input_files; i++)
2287 input_files[i]->eagain = 0;
2288 }
2289
2290 // set duration to max(tmp, duration) in a proper time base and return duration's time_base
2291 static AVRational duration_max(int64_t tmp, int64_t *duration, AVRational tmp_time_base,
2292 AVRational time_base)
2293 {
2294 int ret;
2295
2296 if (!*duration) {
2297 *duration = tmp;
2298 return tmp_time_base;
2299 }
2300
2301 ret = av_compare_ts(*duration, time_base, tmp, tmp_time_base);
2302 if (ret < 0) {
2303 *duration = tmp;
2304 return tmp_time_base;
2305 }
2306
2307 return time_base;
2308 }
2309
2310 static int seek_to_start(InputFile *ifile, AVFormatContext *is)
2311 {
2312 InputStream *ist;
2313 AVCodecContext *avctx;
2314 int i, ret, has_audio = 0;
2315 int64_t duration = 0;
2316
2317 ret = av_seek_frame(is, -1, is->start_time, 0);
2318 if (ret < 0)
2319 return ret;
2320
2321 for (i = 0; i < ifile->nb_streams; i++) {
2322 ist = input_streams[ifile->ist_index + i];
2323 avctx = ist->dec_ctx;
2324
2325 // flush decoders
2326 if (ist->decoding_needed) {
2327 process_input_packet(ist, NULL, 1);
2328 avcodec_flush_buffers(avctx);
2329 }
2330
2331 /* duration is the length of the last frame in a stream
2332 * when audio stream is present we don't care about
2333 * last video frame length because it's not defined exactly */
2334 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && ist->nb_samples)
2335 has_audio = 1;
2336 }
2337
2338 for (i = 0; i < ifile->nb_streams; i++) {
2339 ist = input_streams[ifile->ist_index + i];
2340 avctx = ist->dec_ctx;
2341
2342 if (has_audio) {
2343 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && ist->nb_samples) {
2344 AVRational sample_rate = {1, avctx->sample_rate};
2345
2346 duration = av_rescale_q(ist->nb_samples, sample_rate, ist->st->time_base);
2347 } else
2348 continue;
2349 } else {
2350 if (ist->framerate.num) {
2351 duration = av_rescale_q(1, ist->framerate, ist->st->time_base);
2352 } else if (ist->st->avg_frame_rate.num) {
2353 duration = av_rescale_q(1, ist->st->avg_frame_rate, ist->st->time_base);
2354 } else duration = 1;
2355 }
2356 if (!ifile->duration)
2357 ifile->time_base = ist->st->time_base;
2358 /* the total duration of the stream, max_pts - min_pts is
2359 * the duration of the stream without the last frame */
2360 duration += ist->max_pts - ist->min_pts;
2361 ifile->time_base = duration_max(duration, &ifile->duration, ist->st->time_base,
2362 ifile->time_base);
2363 }
2364
2365 if (ifile->loop > 0)
2366 ifile->loop--;
2367
2368 return ret;
2369 }
2370
2371 /*
2372 * Read one packet from an input file and send it for
2373 * - decoding -> lavfi (audio/video)
2374 * - decoding -> encoding -> muxing (subtitles)
2375 * - muxing (streamcopy)
2376 *
2377 * Return
2378 * - 0 -- one packet was read and processed
2379 * - AVERROR(EAGAIN) -- no packets were available for selected file,
2380 * this function should be called again
2381 * - AVERROR_EOF -- this function should not be called again
2382 */
2383 static int process_input(void)
2384 {
2385 InputFile *ifile;
2386 AVFormatContext *is;
2387 InputStream *ist;
2388 AVPacket pkt;
2389 int ret, i, j;
2390 int64_t duration;
2391
2392 /* select the stream that we must read now */
2393 ifile = select_input_file();
2394 /* if none, if is finished */
2395 if (!ifile) {
2396 if (got_eagain()) {
2397 reset_eagain();
2398 av_usleep(10000);
2399 return AVERROR(EAGAIN);
2400 }
2401 av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from.\n");
2402 return AVERROR_EOF;
2403 }
2404
2405 is = ifile->ctx;
2406 ret = get_input_packet(ifile, &pkt);
2407
2408 if (ret == AVERROR(EAGAIN)) {
2409 ifile->eagain = 1;
2410 return ret;
2411 }
2412 if (ret < 0 && ifile->loop) {
2413 if ((ret = seek_to_start(ifile, is)) < 0)
2414 return ret;
2415 ret = get_input_packet(ifile, &pkt);
2416 }
2417 if (ret < 0) {
2418 if (ret != AVERROR_EOF) {
2419 print_error(is->filename, ret);
2420 if (exit_on_error)
2421 exit_program(1);
2422 }
2423 ifile->eof_reached = 1;
2424
2425 for (i = 0; i < ifile->nb_streams; i++) {
2426 ist = input_streams[ifile->ist_index + i];
2427 if (ist->decoding_needed)
2428 process_input_packet(ist, NULL, 0);
2429
2430 /* mark all outputs that don't go through lavfi as finished */
2431 for (j = 0; j < nb_output_streams; j++) {
2432 OutputStream *ost = output_streams[j];
2433
2434 if (ost->source_index == ifile->ist_index + i &&
2435 (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2436 finish_output_stream(ost);
2437 }
2438 }
2439
2440 return AVERROR(EAGAIN);
2441 }
2442
2443 reset_eagain();
2444
2445 if (do_pkt_dump) {
2446 av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2447 is->streams[pkt.stream_index]);
2448 }
2449 /* the following test is needed in case new streams appear
2450 dynamically in stream : we ignore them */
2451 if (pkt.stream_index >= ifile->nb_streams)
2452 goto discard_packet;
2453
2454 ist = input_streams[ifile->ist_index + pkt.stream_index];
2455
2456 ist->data_size += pkt.size;
2457 ist->nb_packets++;
2458
2459 if (ist->discard)
2460 goto discard_packet;
2461
2462 /* add the stream-global side data to the first packet */
2463 if (ist->nb_packets == 1)
2464 for (i = 0; i < ist->st->nb_side_data; i++) {
2465 AVPacketSideData *src_sd = &ist->st->side_data[i];
2466 uint8_t *dst_data;
2467
2468 if (av_packet_get_side_data(&pkt, src_sd->type, NULL))
2469 continue;
2470 if (ist->autorotate && src_sd->type == AV_PKT_DATA_DISPLAYMATRIX)
2471 continue;
2472
2473 dst_data = av_packet_new_side_data(&pkt, src_sd->type, src_sd->size);
2474 if (!dst_data)
2475 exit_program(1);
2476
2477 memcpy(dst_data, src_sd->data, src_sd->size);
2478 }
2479
2480 if (pkt.dts != AV_NOPTS_VALUE)
2481 pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2482 if (pkt.pts != AV_NOPTS_VALUE)
2483 pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2484
2485 if (pkt.pts != AV_NOPTS_VALUE)
2486 pkt.pts *= ist->ts_scale;
2487 if (pkt.dts != AV_NOPTS_VALUE)
2488 pkt.dts *= ist->ts_scale;
2489
2490 if ((ist->dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
2491 ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) &&
2492 pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2493 (is->iformat->flags & AVFMT_TS_DISCONT)) {
2494 int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2495 int64_t delta = pkt_dts - ist->next_dts;
2496
2497 if ((FFABS(delta) > 1LL * dts_delta_threshold * AV_TIME_BASE || pkt_dts + 1 < ist->last_dts) && !copy_ts) {
2498 ifile->ts_offset -= delta;
2499 av_log(NULL, AV_LOG_DEBUG,
2500 "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2501 delta, ifile->ts_offset);
2502 pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2503 if (pkt.pts != AV_NOPTS_VALUE)
2504 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2505 }
2506 }
2507 duration = av_rescale_q(ifile->duration, ifile->time_base, ist->st->time_base);
2508 if (pkt.pts != AV_NOPTS_VALUE) {
2509 pkt.pts += duration;
2510 ist->max_pts = FFMAX(pkt.pts, ist->max_pts);
2511 ist->min_pts = FFMIN(pkt.pts, ist->min_pts);
2512 }
2513
2514 if (pkt.dts != AV_NOPTS_VALUE)
2515 pkt.dts += duration;
2516
2517 process_input_packet(ist, &pkt, 0);
2518
2519 discard_packet:
2520 av_packet_unref(&pkt);
2521
2522 return 0;
2523 }
2524
2525 /*
2526 * The following code is the main loop of the file converter
2527 */
2528 static int transcode(void)
2529 {
2530 int ret, i, need_input = 1;
2531 AVFormatContext *os;
2532 OutputStream *ost;
2533 InputStream *ist;
2534 int64_t timer_start;
2535
2536 ret = transcode_init();
2537 if (ret < 0)
2538 goto fail;
2539
2540 av_log(NULL, AV_LOG_INFO, "Press ctrl-c to stop encoding\n");
2541 term_init();
2542
2543 timer_start = av_gettime_relative();
2544
2545 #if HAVE_PTHREADS
2546 if ((ret = init_input_threads()) < 0)
2547 goto fail;
2548 #endif
2549
2550 while (!received_sigterm) {
2551 /* check if there's any stream where output is still needed */
2552 if (!need_output()) {
2553 av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
2554 break;
2555 }
2556
2557 /* read and process one input packet if needed */
2558 if (need_input) {
2559 ret = process_input();
2560 if (ret == AVERROR_EOF)
2561 need_input = 0;
2562 }
2563
2564 ret = poll_filters();
2565 if (ret < 0 && ret != AVERROR_EOF) {
2566 char errbuf[128];
2567 av_strerror(ret, errbuf, sizeof(errbuf));
2568
2569 av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n", errbuf);
2570 break;
2571 }
2572
2573 /* dump report by using the output first video and audio streams */
2574 print_report(0, timer_start);
2575 }
2576 #if HAVE_PTHREADS
2577 free_input_threads();
2578 #endif
2579
2580 /* at the end of stream, we must flush the decoder buffers */
2581 for (i = 0; i < nb_input_streams; i++) {
2582 ist = input_streams[i];
2583 if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
2584 process_input_packet(ist, NULL, 0);
2585 }
2586 }
2587 poll_filters();
2588 flush_encoders();
2589
2590 term_exit();
2591
2592 /* write the trailer if needed and close file */
2593 for (i = 0; i < nb_output_files; i++) {
2594 os = output_files[i]->ctx;
2595 av_write_trailer(os);
2596 }
2597
2598 /* dump report by using the first video and audio streams */
2599 print_report(1, timer_start);
2600
2601 /* close each encoder */
2602 for (i = 0; i < nb_output_streams; i++) {
2603 ost = output_streams[i];
2604 if (ost->encoding_needed) {
2605 av_freep(&ost->enc_ctx->stats_in);
2606 }
2607 }
2608
2609 /* close each decoder */
2610 for (i = 0; i < nb_input_streams; i++) {
2611 ist = input_streams[i];
2612 if (ist->decoding_needed) {
2613 avcodec_close(ist->dec_ctx);
2614 if (ist->hwaccel_uninit)
2615 ist->hwaccel_uninit(ist->dec_ctx);
2616 }
2617 }
2618
2619 /* finished ! */
2620 ret = 0;
2621
2622 fail:
2623 #if HAVE_PTHREADS
2624 free_input_threads();
2625 #endif
2626
2627 if (output_streams) {
2628 for (i = 0; i < nb_output_streams; i++) {
2629 ost = output_streams[i];
2630 if (ost) {
2631 if (ost->logfile) {
2632 fclose(ost->logfile);
2633 ost->logfile = NULL;
2634 }
2635 av_free(ost->forced_kf_pts);
2636 av_dict_free(&ost->encoder_opts);
2637 av_dict_free(&ost->resample_opts);
2638 }
2639 }
2640 }
2641 return ret;
2642 }
2643
2644 static int64_t getutime(void)
2645 {
2646 #if HAVE_GETRUSAGE
2647 struct rusage rusage;
2648
2649 getrusage(RUSAGE_SELF, &rusage);
2650 return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
2651 #elif HAVE_GETPROCESSTIMES
2652 HANDLE proc;
2653 FILETIME c, e, k, u;
2654 proc = GetCurrentProcess();
2655 GetProcessTimes(proc, &c, &e, &k, &u);
2656 return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
2657 #else
2658 return av_gettime_relative();
2659 #endif
2660 }
2661
2662 static int64_t getmaxrss(void)
2663 {
2664 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
2665 struct rusage rusage;
2666 getrusage(RUSAGE_SELF, &rusage);
2667 return (int64_t)rusage.ru_maxrss * 1024;
2668 #elif HAVE_GETPROCESSMEMORYINFO
2669 HANDLE proc;
2670 PROCESS_MEMORY_COUNTERS memcounters;
2671 proc = GetCurrentProcess();
2672 memcounters.cb = sizeof(memcounters);
2673 GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
2674 return memcounters.PeakPagefileUsage;
2675 #else
2676 return 0;
2677 #endif
2678 }
2679
2680 int main(int argc, char **argv)
2681 {
2682 int ret;
2683 int64_t ti;
2684
2685 register_exit(avconv_cleanup);
2686
2687 av_log_set_flags(AV_LOG_SKIP_REPEATED);
2688 parse_loglevel(argc, argv, options);
2689
2690 avcodec_register_all();
2691 #if CONFIG_AVDEVICE
2692 avdevice_register_all();
2693 #endif
2694 avfilter_register_all();
2695 av_register_all();
2696 avformat_network_init();
2697
2698 show_banner();
2699
2700 /* parse options and open all input/output files */
2701 ret = avconv_parse_options(argc, argv);
2702 if (ret < 0)
2703 exit_program(1);
2704
2705 if (nb_output_files <= 0 && nb_input_files == 0) {
2706 show_usage();
2707 av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
2708 exit_program(1);
2709 }
2710
2711 /* file converter / grab */
2712 if (nb_output_files <= 0) {
2713 fprintf(stderr, "At least one output file must be specified\n");
2714 exit_program(1);
2715 }
2716
2717 ti = getutime();
2718 if (transcode() < 0)
2719 exit_program(1);
2720 ti = getutime() - ti;
2721 if (do_benchmark) {
2722 int maxrss = getmaxrss() / 1024;
2723 printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss);
2724 }
2725
2726 exit_program(0);
2727 return 0;
2728 }