3a7a898aa0fef7c7867445af1a52c5559a2143ad
[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 static int want_sdp = 1;
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 while (av_fifo_size(fg->inputs[j]->frame_queue)) {
151 AVFrame *frame;
152 av_fifo_generic_read(fg->inputs[j]->frame_queue, &frame,
153 sizeof(frame), NULL);
154 av_frame_free(&frame);
155 }
156 av_fifo_free(fg->inputs[j]->frame_queue);
157 av_buffer_unref(&fg->inputs[j]->hw_frames_ctx);
158 av_freep(&fg->inputs[j]->name);
159 av_freep(&fg->inputs[j]);
160 }
161 av_freep(&fg->inputs);
162 for (j = 0; j < fg->nb_outputs; j++) {
163 av_freep(&fg->outputs[j]->name);
164 av_freep(&fg->outputs[j]->formats);
165 av_freep(&fg->outputs[j]->channel_layouts);
166 av_freep(&fg->outputs[j]->sample_rates);
167 av_freep(&fg->outputs[j]);
168 }
169 av_freep(&fg->outputs);
170 av_freep(&fg->graph_desc);
171
172 av_freep(&filtergraphs[i]);
173 }
174 av_freep(&filtergraphs);
175
176 /* close files */
177 for (i = 0; i < nb_output_files; i++) {
178 OutputFile *of = output_files[i];
179 AVFormatContext *s = of->ctx;
180 if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE) && s->pb)
181 avio_close(s->pb);
182 avformat_free_context(s);
183 av_dict_free(&of->opts);
184
185 av_freep(&output_files[i]);
186 }
187 for (i = 0; i < nb_output_streams; i++) {
188 OutputStream *ost = output_streams[i];
189
190 for (j = 0; j < ost->nb_bitstream_filters; j++)
191 av_bsf_free(&ost->bsf_ctx[j]);
192 av_freep(&ost->bsf_ctx);
193 av_freep(&ost->bitstream_filters);
194
195 av_frame_free(&ost->filtered_frame);
196
197 av_parser_close(ost->parser);
198 avcodec_free_context(&ost->parser_avctx);
199
200 av_freep(&ost->forced_keyframes);
201 av_freep(&ost->avfilter);
202 av_freep(&ost->logfile_prefix);
203
204 avcodec_free_context(&ost->enc_ctx);
205
206 while (av_fifo_size(ost->muxing_queue)) {
207 AVPacket pkt;
208 av_fifo_generic_read(ost->muxing_queue, &pkt, sizeof(pkt), NULL);
209 av_packet_unref(&pkt);
210 }
211 av_fifo_free(ost->muxing_queue);
212
213 av_freep(&output_streams[i]);
214 }
215 for (i = 0; i < nb_input_files; i++) {
216 avformat_close_input(&input_files[i]->ctx);
217 av_freep(&input_files[i]);
218 }
219 for (i = 0; i < nb_input_streams; i++) {
220 InputStream *ist = input_streams[i];
221
222 av_frame_free(&ist->decoded_frame);
223 av_frame_free(&ist->filter_frame);
224 av_dict_free(&ist->decoder_opts);
225 av_freep(&ist->filters);
226 av_freep(&ist->hwaccel_device);
227
228 avcodec_free_context(&ist->dec_ctx);
229
230 av_freep(&input_streams[i]);
231 }
232
233 if (vstats_file)
234 fclose(vstats_file);
235 av_free(vstats_filename);
236
237 av_freep(&input_streams);
238 av_freep(&input_files);
239 av_freep(&output_streams);
240 av_freep(&output_files);
241
242 uninit_opts();
243
244 avformat_network_deinit();
245
246 if (received_sigterm) {
247 av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
248 (int) received_sigterm);
249 exit (255);
250 }
251 }
252
253 void assert_avoptions(AVDictionary *m)
254 {
255 AVDictionaryEntry *t;
256 if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
257 av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
258 exit_program(1);
259 }
260 }
261
262 static void abort_codec_experimental(AVCodec *c, int encoder)
263 {
264 const char *codec_string = encoder ? "encoder" : "decoder";
265 AVCodec *codec;
266 av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
267 "results.\nAdd '-strict experimental' if you want to use it.\n",
268 codec_string, c->name);
269 codec = encoder ? avcodec_find_encoder(c->id) : avcodec_find_decoder(c->id);
270 if (!(codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL))
271 av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
272 codec_string, codec->name);
273 exit_program(1);
274 }
275
276 static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost)
277 {
278 AVFormatContext *s = of->ctx;
279 AVStream *st = ost->st;
280 int ret;
281
282 if (!of->header_written) {
283 AVPacket tmp_pkt;
284 /* the muxer is not initialized yet, buffer the packet */
285 if (!av_fifo_space(ost->muxing_queue)) {
286 int new_size = FFMIN(2 * av_fifo_size(ost->muxing_queue),
287 ost->max_muxing_queue_size);
288 if (new_size <= av_fifo_size(ost->muxing_queue)) {
289 av_log(NULL, AV_LOG_ERROR,
290 "Too many packets buffered for output stream %d:%d.\n",
291 ost->file_index, ost->st->index);
292 exit_program(1);
293 }
294 ret = av_fifo_realloc2(ost->muxing_queue, new_size);
295 if (ret < 0)
296 exit_program(1);
297 }
298 av_packet_move_ref(&tmp_pkt, pkt);
299 av_fifo_generic_write(ost->muxing_queue, &tmp_pkt, sizeof(tmp_pkt), NULL);
300 return;
301 }
302
303 /*
304 * Audio encoders may split the packets -- #frames in != #packets out.
305 * But there is no reordering, so we can limit the number of output packets
306 * by simply dropping them here.
307 * Counting encoded video frames needs to be done separately because of
308 * reordering, see do_video_out()
309 */
310 if (!(st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && ost->encoding_needed)) {
311 if (ost->frame_number >= ost->max_frames) {
312 av_packet_unref(pkt);
313 return;
314 }
315 ost->frame_number++;
316 }
317 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
318 uint8_t *sd = av_packet_get_side_data(pkt, AV_PKT_DATA_QUALITY_FACTOR,
319 NULL);
320 ost->quality = sd ? *(int *)sd : -1;
321
322 if (ost->frame_rate.num) {
323 pkt->duration = av_rescale_q(1, av_inv_q(ost->frame_rate),
324 ost->mux_timebase);
325 }
326 }
327
328 if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS) &&
329 ost->last_mux_dts != AV_NOPTS_VALUE &&
330 pkt->dts < ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT)) {
331 av_log(NULL, AV_LOG_WARNING, "Non-monotonous DTS in output stream "
332 "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
333 ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
334 if (exit_on_error) {
335 av_log(NULL, AV_LOG_FATAL, "aborting.\n");
336 exit_program(1);
337 }
338 av_log(NULL, AV_LOG_WARNING, "changing to %"PRId64". This may result "
339 "in incorrect timestamps in the output file.\n",
340 ost->last_mux_dts + 1);
341 pkt->dts = ost->last_mux_dts + 1;
342 if (pkt->pts != AV_NOPTS_VALUE)
343 pkt->pts = FFMAX(pkt->pts, pkt->dts);
344 }
345 ost->last_mux_dts = pkt->dts;
346
347 ost->data_size += pkt->size;
348 ost->packets_written++;
349
350 pkt->stream_index = ost->index;
351 av_packet_rescale_ts(pkt, ost->mux_timebase, ost->st->time_base);
352
353 ret = av_interleaved_write_frame(s, pkt);
354 if (ret < 0) {
355 print_error("av_interleaved_write_frame()", ret);
356 exit_program(1);
357 }
358 }
359
360 static void output_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost)
361 {
362 int ret = 0;
363
364 /* apply the output bitstream filters, if any */
365 if (ost->nb_bitstream_filters) {
366 int idx;
367
368 ret = av_bsf_send_packet(ost->bsf_ctx[0], pkt);
369 if (ret < 0)
370 goto finish;
371
372 idx = 1;
373 while (idx) {
374 /* get a packet from the previous filter up the chain */
375 ret = av_bsf_receive_packet(ost->bsf_ctx[idx - 1], pkt);
376 if (ret == AVERROR(EAGAIN)) {
377 ret = 0;
378 idx--;
379 continue;
380 } else if (ret < 0)
381 goto finish;
382
383 /* send it to the next filter down the chain or to the muxer */
384 if (idx < ost->nb_bitstream_filters) {
385 ret = av_bsf_send_packet(ost->bsf_ctx[idx], pkt);
386 if (ret < 0)
387 goto finish;
388 idx++;
389 } else
390 write_packet(of, pkt, ost);
391 }
392 } else
393 write_packet(of, pkt, ost);
394
395 finish:
396 if (ret < 0 && ret != AVERROR_EOF) {
397 av_log(NULL, AV_LOG_FATAL, "Error applying bitstream filters to an output "
398 "packet for stream #%d:%d.\n", ost->file_index, ost->index);
399 exit_program(1);
400 }
401 }
402
403 static int check_recording_time(OutputStream *ost)
404 {
405 OutputFile *of = output_files[ost->file_index];
406
407 if (of->recording_time != INT64_MAX &&
408 av_compare_ts(ost->sync_opts - ost->first_pts, ost->enc_ctx->time_base, of->recording_time,
409 AV_TIME_BASE_Q) >= 0) {
410 ost->finished = 1;
411 return 0;
412 }
413 return 1;
414 }
415
416 static void do_audio_out(OutputFile *of, OutputStream *ost,
417 AVFrame *frame)
418 {
419 AVCodecContext *enc = ost->enc_ctx;
420 AVPacket pkt;
421 int ret;
422
423 av_init_packet(&pkt);
424 pkt.data = NULL;
425 pkt.size = 0;
426
427 if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
428 frame->pts = ost->sync_opts;
429 ost->sync_opts = frame->pts + frame->nb_samples;
430
431 ost->samples_encoded += frame->nb_samples;
432 ost->frames_encoded++;
433
434 ret = avcodec_send_frame(enc, frame);
435 if (ret < 0)
436 goto error;
437
438 while (1) {
439 ret = avcodec_receive_packet(enc, &pkt);
440 if (ret == AVERROR(EAGAIN))
441 break;
442 if (ret < 0)
443 goto error;
444
445 output_packet(of, &pkt, ost);
446 }
447
448 return;
449 error:
450 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
451 exit_program(1);
452 }
453
454 static void do_subtitle_out(OutputFile *of,
455 OutputStream *ost,
456 InputStream *ist,
457 AVSubtitle *sub,
458 int64_t pts)
459 {
460 static uint8_t *subtitle_out = NULL;
461 int subtitle_out_max_size = 1024 * 1024;
462 int subtitle_out_size, nb, i;
463 AVCodecContext *enc;
464 AVPacket pkt;
465
466 if (pts == AV_NOPTS_VALUE) {
467 av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
468 if (exit_on_error)
469 exit_program(1);
470 return;
471 }
472
473 enc = ost->enc_ctx;
474
475 if (!subtitle_out) {
476 subtitle_out = av_malloc(subtitle_out_max_size);
477 }
478
479 /* Note: DVB subtitle need one packet to draw them and one other
480 packet to clear them */
481 /* XXX: signal it in the codec context ? */
482 if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
483 nb = 2;
484 else
485 nb = 1;
486
487 for (i = 0; i < nb; i++) {
488 ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
489 if (!check_recording_time(ost))
490 return;
491
492 sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
493 // start_display_time is required to be 0
494 sub->pts += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
495 sub->end_display_time -= sub->start_display_time;
496 sub->start_display_time = 0;
497
498 ost->frames_encoded++;
499
500 subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
501 subtitle_out_max_size, sub);
502 if (subtitle_out_size < 0) {
503 av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
504 exit_program(1);
505 }
506
507 av_init_packet(&pkt);
508 pkt.data = subtitle_out;
509 pkt.size = subtitle_out_size;
510 pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->mux_timebase);
511 if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
512 /* XXX: the pts correction is handled here. Maybe handling
513 it in the codec would be better */
514 if (i == 0)
515 pkt.pts += 90 * sub->start_display_time;
516 else
517 pkt.pts += 90 * sub->end_display_time;
518 }
519 output_packet(of, &pkt, ost);
520 }
521 }
522
523 static void do_video_out(OutputFile *of,
524 OutputStream *ost,
525 AVFrame *in_picture,
526 int *frame_size)
527 {
528 int ret, format_video_sync;
529 AVPacket pkt;
530 AVCodecContext *enc = ost->enc_ctx;
531
532 *frame_size = 0;
533
534 format_video_sync = video_sync_method;
535 if (format_video_sync == VSYNC_AUTO)
536 format_video_sync = (of->ctx->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH :
537 (of->ctx->oformat->flags & AVFMT_VARIABLE_FPS) ? VSYNC_VFR : VSYNC_CFR;
538 if (format_video_sync != VSYNC_PASSTHROUGH &&
539 ost->frame_number &&
540 in_picture->pts != AV_NOPTS_VALUE &&
541 in_picture->pts < ost->sync_opts) {
542 nb_frames_drop++;
543 av_log(NULL, AV_LOG_WARNING,
544 "*** dropping frame %d from stream %d at ts %"PRId64"\n",
545 ost->frame_number, ost->st->index, in_picture->pts);
546 return;
547 }
548
549 if (in_picture->pts == AV_NOPTS_VALUE)
550 in_picture->pts = ost->sync_opts;
551 ost->sync_opts = in_picture->pts;
552
553
554 if (!ost->frame_number)
555 ost->first_pts = in_picture->pts;
556
557 av_init_packet(&pkt);
558 pkt.data = NULL;
559 pkt.size = 0;
560
561 if (ost->frame_number >= ost->max_frames)
562 return;
563
564 if (enc->flags & (AV_CODEC_FLAG_INTERLACED_DCT | AV_CODEC_FLAG_INTERLACED_ME) &&
565 ost->top_field_first >= 0)
566 in_picture->top_field_first = !!ost->top_field_first;
567
568 in_picture->quality = enc->global_quality;
569 in_picture->pict_type = 0;
570 if (ost->forced_kf_index < ost->forced_kf_count &&
571 in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
572 in_picture->pict_type = AV_PICTURE_TYPE_I;
573 ost->forced_kf_index++;
574 }
575
576 ost->frames_encoded++;
577
578 ret = avcodec_send_frame(enc, in_picture);
579 if (ret < 0)
580 goto error;
581
582 /*
583 * For video, there may be reordering, so we can't throw away frames on
584 * encoder flush, we need to limit them here, before they go into encoder.
585 */
586 ost->frame_number++;
587
588 while (1) {
589 ret = avcodec_receive_packet(enc, &pkt);
590 if (ret == AVERROR(EAGAIN))
591 break;
592 if (ret < 0)
593 goto error;
594
595 output_packet(of, &pkt, ost);
596 *frame_size = pkt.size;
597
598 /* if two pass, output log */
599 if (ost->logfile && enc->stats_out) {
600 fprintf(ost->logfile, "%s", enc->stats_out);
601 }
602
603 ost->sync_opts++;
604 }
605
606 return;
607 error:
608 av_assert0(ret != AVERROR(EAGAIN) && ret != AVERROR_EOF);
609 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
610 exit_program(1);
611 }
612
613 #if FF_API_CODED_FRAME && FF_API_ERROR_FRAME
614 static double psnr(double d)
615 {
616 return -10.0 * log(d) / log(10.0);
617 }
618 #endif
619
620 static void do_video_stats(OutputStream *ost, int frame_size)
621 {
622 AVCodecContext *enc;
623 int frame_number;
624 double ti1, bitrate, avg_bitrate;
625
626 /* this is executed just the first time do_video_stats is called */
627 if (!vstats_file) {
628 vstats_file = fopen(vstats_filename, "w");
629 if (!vstats_file) {
630 perror("fopen");
631 exit_program(1);
632 }
633 }
634
635 enc = ost->enc_ctx;
636 if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
637 frame_number = ost->frame_number;
638 fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number,
639 ost->quality / (float)FF_QP2LAMBDA);
640
641 #if FF_API_CODED_FRAME && FF_API_ERROR_FRAME
642 FF_DISABLE_DEPRECATION_WARNINGS
643 if (enc->flags & AV_CODEC_FLAG_PSNR)
644 fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
645 FF_ENABLE_DEPRECATION_WARNINGS
646 #endif
647
648 fprintf(vstats_file,"f_size= %6d ", frame_size);
649 /* compute pts value */
650 ti1 = ost->sync_opts * av_q2d(enc->time_base);
651 if (ti1 < 0.01)
652 ti1 = 0.01;
653
654 bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
655 avg_bitrate = (double)(ost->data_size * 8) / ti1 / 1000.0;
656 fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
657 (double)ost->data_size / 1024, ti1, bitrate, avg_bitrate);
658 #if FF_API_CODED_FRAME
659 FF_DISABLE_DEPRECATION_WARNINGS
660 fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
661 FF_ENABLE_DEPRECATION_WARNINGS
662 #endif
663 }
664 }
665
666 static int init_output_stream(OutputStream *ost, char *error, int error_len);
667
668 /*
669 * Read one frame for lavfi output for ost and encode it.
670 */
671 static int poll_filter(OutputStream *ost)
672 {
673 OutputFile *of = output_files[ost->file_index];
674 AVFrame *filtered_frame = NULL;
675 int frame_size, ret;
676
677 if (!ost->filtered_frame && !(ost->filtered_frame = av_frame_alloc())) {
678 return AVERROR(ENOMEM);
679 }
680 filtered_frame = ost->filtered_frame;
681
682 if (!ost->initialized) {
683 char error[1024];
684 ret = init_output_stream(ost, error, sizeof(error));
685 if (ret < 0) {
686 av_log(NULL, AV_LOG_ERROR, "Error initializing output stream %d:%d -- %s\n",
687 ost->file_index, ost->index, error);
688 exit_program(1);
689 }
690 }
691
692 if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
693 !(ost->enc->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE))
694 ret = av_buffersink_get_samples(ost->filter->filter, filtered_frame,
695 ost->enc_ctx->frame_size);
696 else
697 ret = av_buffersink_get_frame(ost->filter->filter, filtered_frame);
698
699 if (ret < 0)
700 return ret;
701
702 if (filtered_frame->pts != AV_NOPTS_VALUE) {
703 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
704 filtered_frame->pts = av_rescale_q(filtered_frame->pts,
705 ost->filter->filter->inputs[0]->time_base,
706 ost->enc_ctx->time_base) -
707 av_rescale_q(start_time,
708 AV_TIME_BASE_Q,
709 ost->enc_ctx->time_base);
710 }
711
712 switch (ost->filter->filter->inputs[0]->type) {
713 case AVMEDIA_TYPE_VIDEO:
714 if (!ost->frame_aspect_ratio)
715 ost->enc_ctx->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
716
717 do_video_out(of, ost, filtered_frame, &frame_size);
718 if (vstats_filename && frame_size)
719 do_video_stats(ost, frame_size);
720 break;
721 case AVMEDIA_TYPE_AUDIO:
722 do_audio_out(of, ost, filtered_frame);
723 break;
724 default:
725 // TODO support subtitle filters
726 av_assert0(0);
727 }
728
729 av_frame_unref(filtered_frame);
730
731 return 0;
732 }
733
734 static void finish_output_stream(OutputStream *ost)
735 {
736 OutputFile *of = output_files[ost->file_index];
737 int i;
738
739 ost->finished = 1;
740
741 if (of->shortest) {
742 for (i = 0; i < of->ctx->nb_streams; i++)
743 output_streams[of->ost_index + i]->finished = 1;
744 }
745 }
746
747 /*
748 * Read as many frames from possible from lavfi and encode them.
749 *
750 * Always read from the active stream with the lowest timestamp. If no frames
751 * are available for it then return EAGAIN and wait for more input. This way we
752 * can use lavfi sources that generate unlimited amount of frames without memory
753 * usage exploding.
754 */
755 static int poll_filters(void)
756 {
757 int i, ret = 0;
758
759 while (ret >= 0 && !received_sigterm) {
760 OutputStream *ost = NULL;
761 int64_t min_pts = INT64_MAX;
762
763 /* choose output stream with the lowest timestamp */
764 for (i = 0; i < nb_output_streams; i++) {
765 int64_t pts = output_streams[i]->sync_opts;
766
767 if (!output_streams[i]->filter || output_streams[i]->finished ||
768 !output_streams[i]->filter->graph->graph)
769 continue;
770
771 pts = av_rescale_q(pts, output_streams[i]->enc_ctx->time_base,
772 AV_TIME_BASE_Q);
773 if (pts < min_pts) {
774 min_pts = pts;
775 ost = output_streams[i];
776 }
777 }
778
779 if (!ost)
780 break;
781
782 ret = poll_filter(ost);
783
784 if (ret == AVERROR_EOF) {
785 finish_output_stream(ost);
786 ret = 0;
787 } else if (ret == AVERROR(EAGAIN))
788 return 0;
789 }
790
791 return ret;
792 }
793
794 static void print_final_stats(int64_t total_size)
795 {
796 uint64_t video_size = 0, audio_size = 0, extra_size = 0, other_size = 0;
797 uint64_t data_size = 0;
798 float percent = -1.0;
799 int i, j;
800
801 for (i = 0; i < nb_output_streams; i++) {
802 OutputStream *ost = output_streams[i];
803 switch (ost->enc_ctx->codec_type) {
804 case AVMEDIA_TYPE_VIDEO: video_size += ost->data_size; break;
805 case AVMEDIA_TYPE_AUDIO: audio_size += ost->data_size; break;
806 default: other_size += ost->data_size; break;
807 }
808 extra_size += ost->enc_ctx->extradata_size;
809 data_size += ost->data_size;
810 }
811
812 if (data_size && total_size >= data_size)
813 percent = 100.0 * (total_size - data_size) / data_size;
814
815 av_log(NULL, AV_LOG_INFO, "\n");
816 av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB other streams:%1.0fkB global headers:%1.0fkB muxing overhead: ",
817 video_size / 1024.0,
818 audio_size / 1024.0,
819 other_size / 1024.0,
820 extra_size / 1024.0);
821 if (percent >= 0.0)
822 av_log(NULL, AV_LOG_INFO, "%f%%", percent);
823 else
824 av_log(NULL, AV_LOG_INFO, "unknown");
825 av_log(NULL, AV_LOG_INFO, "\n");
826
827 /* print verbose per-stream stats */
828 for (i = 0; i < nb_input_files; i++) {
829 InputFile *f = input_files[i];
830 uint64_t total_packets = 0, total_size = 0;
831
832 av_log(NULL, AV_LOG_VERBOSE, "Input file #%d (%s):\n",
833 i, f->ctx->filename);
834
835 for (j = 0; j < f->nb_streams; j++) {
836 InputStream *ist = input_streams[f->ist_index + j];
837 enum AVMediaType type = ist->dec_ctx->codec_type;
838
839 total_size += ist->data_size;
840 total_packets += ist->nb_packets;
841
842 av_log(NULL, AV_LOG_VERBOSE, " Input stream #%d:%d (%s): ",
843 i, j, media_type_string(type));
844 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets read (%"PRIu64" bytes); ",
845 ist->nb_packets, ist->data_size);
846
847 if (ist->decoding_needed) {
848 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames decoded",
849 ist->frames_decoded);
850 if (type == AVMEDIA_TYPE_AUDIO)
851 av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ist->samples_decoded);
852 av_log(NULL, AV_LOG_VERBOSE, "; ");
853 }
854
855 av_log(NULL, AV_LOG_VERBOSE, "\n");
856 }
857
858 av_log(NULL, AV_LOG_VERBOSE, " Total: %"PRIu64" packets (%"PRIu64" bytes) demuxed\n",
859 total_packets, total_size);
860 }
861
862 for (i = 0; i < nb_output_files; i++) {
863 OutputFile *of = output_files[i];
864 uint64_t total_packets = 0, total_size = 0;
865
866 av_log(NULL, AV_LOG_VERBOSE, "Output file #%d (%s):\n",
867 i, of->ctx->filename);
868
869 for (j = 0; j < of->ctx->nb_streams; j++) {
870 OutputStream *ost = output_streams[of->ost_index + j];
871 enum AVMediaType type = ost->enc_ctx->codec_type;
872
873 total_size += ost->data_size;
874 total_packets += ost->packets_written;
875
876 av_log(NULL, AV_LOG_VERBOSE, " Output stream #%d:%d (%s): ",
877 i, j, media_type_string(type));
878 if (ost->encoding_needed) {
879 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames encoded",
880 ost->frames_encoded);
881 if (type == AVMEDIA_TYPE_AUDIO)
882 av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ost->samples_encoded);
883 av_log(NULL, AV_LOG_VERBOSE, "; ");
884 }
885
886 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets muxed (%"PRIu64" bytes); ",
887 ost->packets_written, ost->data_size);
888
889 av_log(NULL, AV_LOG_VERBOSE, "\n");
890 }
891
892 av_log(NULL, AV_LOG_VERBOSE, " Total: %"PRIu64" packets (%"PRIu64" bytes) muxed\n",
893 total_packets, total_size);
894 }
895 }
896
897 static void print_report(int is_last_report, int64_t timer_start)
898 {
899 char buf[1024];
900 OutputStream *ost;
901 AVFormatContext *oc;
902 int64_t total_size;
903 AVCodecContext *enc;
904 int frame_number, vid, i;
905 double bitrate, ti1, pts;
906 static int64_t last_time = -1;
907 static int qp_histogram[52];
908
909 if (!print_stats && !is_last_report)
910 return;
911
912 if (!is_last_report) {
913 int64_t cur_time;
914 /* display the report every 0.5 seconds */
915 cur_time = av_gettime_relative();
916 if (last_time == -1) {
917 last_time = cur_time;
918 return;
919 }
920 if ((cur_time - last_time) < 500000)
921 return;
922 last_time = cur_time;
923 }
924
925
926 oc = output_files[0]->ctx;
927
928 total_size = avio_size(oc->pb);
929 if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
930 total_size = avio_tell(oc->pb);
931 if (total_size < 0) {
932 char errbuf[128];
933 av_strerror(total_size, errbuf, sizeof(errbuf));
934 av_log(NULL, AV_LOG_VERBOSE, "Bitrate not available, "
935 "avio_tell() failed: %s\n", errbuf);
936 total_size = 0;
937 }
938
939 buf[0] = '\0';
940 ti1 = 1e10;
941 vid = 0;
942 for (i = 0; i < nb_output_streams; i++) {
943 float q = -1;
944 ost = output_streams[i];
945 enc = ost->enc_ctx;
946 if (!ost->stream_copy)
947 q = ost->quality / (float) FF_QP2LAMBDA;
948
949 if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
950 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
951 }
952 if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
953 float t = (av_gettime_relative() - timer_start) / 1000000.0;
954
955 frame_number = ost->frame_number;
956 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
957 frame_number, (t > 1) ? (int)(frame_number / t + 0.5) : 0, q);
958 if (is_last_report)
959 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
960 if (qp_hist) {
961 int j;
962 int qp = lrintf(q);
963 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
964 qp_histogram[qp]++;
965 for (j = 0; j < 32; j++)
966 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
967 }
968
969 #if FF_API_CODED_FRAME && FF_API_ERROR_FRAME
970 FF_DISABLE_DEPRECATION_WARNINGS
971 if (enc->flags & AV_CODEC_FLAG_PSNR) {
972 int j;
973 double error, error_sum = 0;
974 double scale, scale_sum = 0;
975 char type[3] = { 'Y','U','V' };
976 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
977 for (j = 0; j < 3; j++) {
978 if (is_last_report) {
979 error = enc->error[j];
980 scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
981 } else {
982 error = enc->coded_frame->error[j];
983 scale = enc->width * enc->height * 255.0 * 255.0;
984 }
985 if (j)
986 scale /= 4;
987 error_sum += error;
988 scale_sum += scale;
989 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
990 }
991 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
992 }
993 FF_ENABLE_DEPRECATION_WARNINGS
994 #endif
995 vid = 1;
996 }
997 /* compute min output value */
998 pts = (double)ost->last_mux_dts * av_q2d(ost->mux_timebase);
999 if ((pts < ti1) && (pts > 0))
1000 ti1 = pts;
1001 }
1002 if (ti1 < 0.01)
1003 ti1 = 0.01;
1004
1005 bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1006
1007 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1008 "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1009 (double)total_size / 1024, ti1, bitrate);
1010
1011 if (nb_frames_drop)
1012 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " drop=%d",
1013 nb_frames_drop);
1014
1015 av_log(NULL, AV_LOG_INFO, "%s \r", buf);
1016
1017 fflush(stderr);
1018
1019 if (is_last_report)
1020 print_final_stats(total_size);
1021
1022 }
1023
1024 static void flush_encoders(void)
1025 {
1026 int i, ret;
1027
1028 for (i = 0; i < nb_output_streams; i++) {
1029 OutputStream *ost = output_streams[i];
1030 AVCodecContext *enc = ost->enc_ctx;
1031 OutputFile *of = output_files[ost->file_index];
1032 int stop_encoding = 0;
1033
1034 if (!ost->encoding_needed)
1035 continue;
1036
1037 if (enc->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1038 continue;
1039
1040 if (enc->codec_type != AVMEDIA_TYPE_VIDEO && enc->codec_type != AVMEDIA_TYPE_AUDIO)
1041 continue;
1042
1043 avcodec_send_frame(enc, NULL);
1044
1045 for (;;) {
1046 const char *desc = NULL;
1047
1048 switch (enc->codec_type) {
1049 case AVMEDIA_TYPE_AUDIO:
1050 desc = "Audio";
1051 break;
1052 case AVMEDIA_TYPE_VIDEO:
1053 desc = "Video";
1054 break;
1055 default:
1056 av_assert0(0);
1057 }
1058
1059 if (1) {
1060 AVPacket pkt;
1061 av_init_packet(&pkt);
1062 pkt.data = NULL;
1063 pkt.size = 0;
1064
1065 ret = avcodec_receive_packet(enc, &pkt);
1066 if (ret < 0 && ret != AVERROR_EOF) {
1067 av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1068 exit_program(1);
1069 }
1070 if (ost->logfile && enc->stats_out) {
1071 fprintf(ost->logfile, "%s", enc->stats_out);
1072 }
1073 if (ret == AVERROR_EOF) {
1074 stop_encoding = 1;
1075 break;
1076 }
1077 output_packet(of, &pkt, ost);
1078 }
1079
1080 if (stop_encoding)
1081 break;
1082 }
1083 }
1084 }
1085
1086 /*
1087 * Check whether a packet from ist should be written into ost at this time
1088 */
1089 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1090 {
1091 OutputFile *of = output_files[ost->file_index];
1092 int ist_index = input_files[ist->file_index]->ist_index + ist->st->index;
1093
1094 if (ost->source_index != ist_index)
1095 return 0;
1096
1097 if (of->start_time != AV_NOPTS_VALUE && ist->last_dts < of->start_time)
1098 return 0;
1099
1100 return 1;
1101 }
1102
1103 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1104 {
1105 OutputFile *of = output_files[ost->file_index];
1106 InputFile *f = input_files [ist->file_index];
1107 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1108 int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->mux_timebase);
1109 AVPacket opkt;
1110
1111 av_init_packet(&opkt);
1112
1113 if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1114 !ost->copy_initial_nonkeyframes)
1115 return;
1116
1117 if (of->recording_time != INT64_MAX &&
1118 ist->last_dts >= of->recording_time + start_time) {
1119 ost->finished = 1;
1120 return;
1121 }
1122
1123 if (f->recording_time != INT64_MAX) {
1124 start_time = f->ctx->start_time;
1125 if (f->start_time != AV_NOPTS_VALUE)
1126 start_time += f->start_time;
1127 if (ist->last_dts >= f->recording_time + start_time) {
1128 ost->finished = 1;
1129 return;
1130 }
1131 }
1132
1133 /* force the input stream PTS */
1134 if (ost->enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO)
1135 ost->sync_opts++;
1136
1137 if (pkt->pts != AV_NOPTS_VALUE)
1138 opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->mux_timebase) - ost_tb_start_time;
1139 else
1140 opkt.pts = AV_NOPTS_VALUE;
1141
1142 if (pkt->dts == AV_NOPTS_VALUE)
1143 opkt.dts = av_rescale_q(ist->last_dts, AV_TIME_BASE_Q, ost->mux_timebase);
1144 else
1145 opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->mux_timebase);
1146 opkt.dts -= ost_tb_start_time;
1147
1148 opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->mux_timebase);
1149 opkt.flags = pkt->flags;
1150
1151 // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1152 if ( ost->enc_ctx->codec_id != AV_CODEC_ID_H264
1153 && ost->enc_ctx->codec_id != AV_CODEC_ID_MPEG1VIDEO
1154 && ost->enc_ctx->codec_id != AV_CODEC_ID_MPEG2VIDEO
1155 && ost->enc_ctx->codec_id != AV_CODEC_ID_VC1
1156 ) {
1157 if (av_parser_change(ost->parser, ost->parser_avctx,
1158 &opkt.data, &opkt.size,
1159 pkt->data, pkt->size,
1160 pkt->flags & AV_PKT_FLAG_KEY)) {
1161 opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1162 if (!opkt.buf)
1163 exit_program(1);
1164 }
1165 } else {
1166 opkt.data = pkt->data;
1167 opkt.size = pkt->size;
1168 }
1169
1170 output_packet(of, &opkt, ost);
1171 }
1172
1173 static int ifilter_send_frame(InputFilter *ifilter, AVFrame *frame)
1174 {
1175 FilterGraph *fg = ifilter->graph;
1176 int need_reinit, ret, i;
1177
1178 /* determine if the parameters for this input changed */
1179 need_reinit = ifilter->format != frame->format;
1180 if (!!ifilter->hw_frames_ctx != !!frame->hw_frames_ctx ||
1181 (ifilter->hw_frames_ctx && ifilter->hw_frames_ctx->data != frame->hw_frames_ctx->data))
1182 need_reinit = 1;
1183
1184 switch (ifilter->ist->st->codecpar->codec_type) {
1185 case AVMEDIA_TYPE_AUDIO:
1186 need_reinit |= ifilter->sample_rate != frame->sample_rate ||
1187 ifilter->channel_layout != frame->channel_layout;
1188 break;
1189 case AVMEDIA_TYPE_VIDEO:
1190 need_reinit |= ifilter->width != frame->width ||
1191 ifilter->height != frame->height;
1192 break;
1193 }
1194
1195 if (need_reinit) {
1196 ret = ifilter_parameters_from_frame(ifilter, frame);
1197 if (ret < 0)
1198 return ret;
1199 }
1200
1201 /* (re)init the graph if possible, otherwise buffer the frame and return */
1202 if (need_reinit || !fg->graph) {
1203 for (i = 0; i < fg->nb_inputs; i++) {
1204 if (fg->inputs[i]->format < 0) {
1205 AVFrame *tmp = av_frame_clone(frame);
1206 if (!tmp)
1207 return AVERROR(ENOMEM);
1208 av_frame_unref(frame);
1209
1210 if (!av_fifo_space(ifilter->frame_queue)) {
1211 ret = av_fifo_realloc2(ifilter->frame_queue, 2 * av_fifo_size(ifilter->frame_queue));
1212 if (ret < 0)
1213 return ret;
1214 }
1215 av_fifo_generic_write(ifilter->frame_queue, &tmp, sizeof(tmp), NULL);
1216 return 0;
1217 }
1218 }
1219
1220 ret = poll_filters();
1221 if (ret < 0 && ret != AVERROR_EOF) {
1222 char errbuf[128];
1223 av_strerror(ret, errbuf, sizeof(errbuf));
1224
1225 av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n", errbuf);
1226 return ret;
1227 }
1228
1229 ret = configure_filtergraph(fg);
1230 if (ret < 0) {
1231 av_log(NULL, AV_LOG_ERROR, "Error reinitializing filters!\n");
1232 return ret;
1233 }
1234 }
1235
1236 ret = av_buffersrc_add_frame(ifilter->filter, frame);
1237 if (ret < 0) {
1238 av_log(NULL, AV_LOG_ERROR, "Error while filtering\n");
1239 return ret;
1240 }
1241
1242 return 0;
1243 }
1244
1245 static int ifilter_send_eof(InputFilter *ifilter)
1246 {
1247 int i, j, ret;
1248
1249 ifilter->eof = 1;
1250
1251 if (ifilter->filter) {
1252 ret = av_buffersrc_add_frame(ifilter->filter, NULL);
1253 if (ret < 0)
1254 return ret;
1255 } else {
1256 // the filtergraph was never configured
1257 FilterGraph *fg = ifilter->graph;
1258 for (i = 0; i < fg->nb_inputs; i++)
1259 if (!fg->inputs[i]->eof)
1260 break;
1261 if (i == fg->nb_inputs) {
1262 // All the input streams have finished without the filtergraph
1263 // ever being configured.
1264 // Mark the output streams as finished.
1265 for (j = 0; j < fg->nb_outputs; j++)
1266 finish_output_stream(fg->outputs[j]->ost);
1267 }
1268 }
1269
1270 return 0;
1271 }
1272
1273 // This does not quite work like avcodec_decode_audio4/avcodec_decode_video2.
1274 // There is the following difference: if you got a frame, you must call
1275 // it again with pkt=NULL. pkt==NULL is treated differently from pkt.size==0
1276 // (pkt==NULL means get more output, pkt.size==0 is a flush/drain packet)
1277 static int decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *pkt)
1278 {
1279 int ret;
1280
1281 *got_frame = 0;
1282
1283 if (pkt) {
1284 ret = avcodec_send_packet(avctx, pkt);
1285 // In particular, we don't expect AVERROR(EAGAIN), because we read all
1286 // decoded frames with avcodec_receive_frame() until done.
1287 if (ret < 0)
1288 return ret == AVERROR_EOF ? 0 : ret;
1289 }
1290
1291 ret = avcodec_receive_frame(avctx, frame);
1292 if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
1293 return ret;
1294 if (ret >= 0)
1295 *got_frame = 1;
1296
1297 return 0;
1298 }
1299
1300 int guess_input_channel_layout(InputStream *ist)
1301 {
1302 AVCodecContext *dec = ist->dec_ctx;
1303
1304 if (!dec->channel_layout) {
1305 char layout_name[256];
1306
1307 dec->channel_layout = av_get_default_channel_layout(dec->channels);
1308 if (!dec->channel_layout)
1309 return 0;
1310 av_get_channel_layout_string(layout_name, sizeof(layout_name),
1311 dec->channels, dec->channel_layout);
1312 av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for Input Stream "
1313 "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1314 }
1315 return 1;
1316 }
1317
1318 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1319 {
1320 AVFrame *decoded_frame, *f;
1321 AVCodecContext *avctx = ist->dec_ctx;
1322 int i, ret, err = 0;
1323
1324 if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1325 return AVERROR(ENOMEM);
1326 if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1327 return AVERROR(ENOMEM);
1328 decoded_frame = ist->decoded_frame;
1329
1330 ret = decode(avctx, decoded_frame, got_output, pkt);
1331 if (!*got_output || ret < 0)
1332 return ret;
1333
1334 ist->samples_decoded += decoded_frame->nb_samples;
1335 ist->frames_decoded++;
1336
1337 /* if the decoder provides a pts, use it instead of the last packet pts.
1338 the decoder could be delaying output by a packet or more. */
1339 if (decoded_frame->pts != AV_NOPTS_VALUE)
1340 ist->next_dts = decoded_frame->pts;
1341 else if (pkt && pkt->pts != AV_NOPTS_VALUE) {
1342 decoded_frame->pts = pkt->pts;
1343 }
1344
1345 if (decoded_frame->pts != AV_NOPTS_VALUE)
1346 decoded_frame->pts = av_rescale_q(decoded_frame->pts,
1347 ist->st->time_base,
1348 (AVRational){1, avctx->sample_rate});
1349 ist->nb_samples = decoded_frame->nb_samples;
1350 for (i = 0; i < ist->nb_filters; i++) {
1351 if (i < ist->nb_filters - 1) {
1352 f = ist->filter_frame;
1353 err = av_frame_ref(f, decoded_frame);
1354 if (err < 0)
1355 break;
1356 } else
1357 f = decoded_frame;
1358
1359 err = ifilter_send_frame(ist->filters[i], f);
1360 if (err < 0)
1361 break;
1362 }
1363
1364 av_frame_unref(ist->filter_frame);
1365 av_frame_unref(decoded_frame);
1366 return err < 0 ? err : ret;
1367 }
1368
1369 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1370 {
1371 AVFrame *decoded_frame, *f;
1372 int i, ret = 0, err = 0;
1373
1374 if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1375 return AVERROR(ENOMEM);
1376 if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1377 return AVERROR(ENOMEM);
1378 decoded_frame = ist->decoded_frame;
1379
1380 ret = decode(ist->dec_ctx, decoded_frame, got_output, pkt);
1381 if (!*got_output || ret < 0)
1382 return ret;
1383
1384 ist->frames_decoded++;
1385
1386 if (ist->hwaccel_retrieve_data && decoded_frame->format == ist->hwaccel_pix_fmt) {
1387 err = ist->hwaccel_retrieve_data(ist->dec_ctx, decoded_frame);
1388 if (err < 0)
1389 goto fail;
1390 }
1391 ist->hwaccel_retrieved_pix_fmt = decoded_frame->format;
1392
1393 decoded_frame->pts = guess_correct_pts(&ist->pts_ctx, decoded_frame->pts,
1394 decoded_frame->pkt_dts);
1395
1396 if (ist->st->sample_aspect_ratio.num)
1397 decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1398
1399 for (i = 0; i < ist->nb_filters; i++) {
1400 if (i < ist->nb_filters - 1) {
1401 f = ist->filter_frame;
1402 err = av_frame_ref(f, decoded_frame);
1403 if (err < 0)
1404 break;
1405 } else
1406 f = decoded_frame;
1407
1408 err = ifilter_send_frame(ist->filters[i], f);
1409 if (err < 0)
1410 break;
1411 }
1412
1413 fail:
1414 av_frame_unref(ist->filter_frame);
1415 av_frame_unref(decoded_frame);
1416 return err < 0 ? err : ret;
1417 }
1418
1419 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1420 {
1421 AVSubtitle subtitle;
1422 int i, ret = avcodec_decode_subtitle2(ist->dec_ctx,
1423 &subtitle, got_output, pkt);
1424 if (ret < 0)
1425 return ret;
1426 if (!*got_output)
1427 return ret;
1428
1429 ist->frames_decoded++;
1430
1431 for (i = 0; i < nb_output_streams; i++) {
1432 OutputStream *ost = output_streams[i];
1433
1434 if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1435 continue;
1436
1437 do_subtitle_out(output_files[ost->file_index], ost, ist, &subtitle, pkt->pts);
1438 }
1439
1440 avsubtitle_free(&subtitle);
1441 return ret;
1442 }
1443
1444 static int send_filter_eof(InputStream *ist)
1445 {
1446 int i, ret;
1447 for (i = 0; i < ist->nb_filters; i++) {
1448 ret = ifilter_send_eof(ist->filters[i]);
1449 if (ret < 0)
1450 return ret;
1451 }
1452 return 0;
1453 }
1454
1455 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1456 static void process_input_packet(InputStream *ist, const AVPacket *pkt, int no_eof)
1457 {
1458 int i;
1459 int repeating = 0;
1460 AVPacket avpkt;
1461
1462 if (ist->next_dts == AV_NOPTS_VALUE)
1463 ist->next_dts = ist->last_dts;
1464
1465 if (!pkt) {
1466 /* EOF handling */
1467 av_init_packet(&avpkt);
1468 avpkt.data = NULL;
1469 avpkt.size = 0;
1470 } else {
1471 avpkt = *pkt;
1472 }
1473
1474 if (pkt && pkt->dts != AV_NOPTS_VALUE)
1475 ist->next_dts = ist->last_dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1476
1477 // while we have more to decode or while the decoder did output something on EOF
1478 while (ist->decoding_needed && (!pkt || avpkt.size > 0)) {
1479 int ret = 0;
1480 int got_output = 0;
1481
1482 if (!repeating)
1483 ist->last_dts = ist->next_dts;
1484
1485 switch (ist->dec_ctx->codec_type) {
1486 case AVMEDIA_TYPE_AUDIO:
1487 ret = decode_audio (ist, repeating ? NULL : &avpkt, &got_output);
1488 break;
1489 case AVMEDIA_TYPE_VIDEO:
1490 ret = decode_video (ist, repeating ? NULL : &avpkt, &got_output);
1491 if (repeating && !got_output)
1492 ;
1493 else if (pkt && pkt->duration)
1494 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1495 else if (ist->st->avg_frame_rate.num)
1496 ist->next_dts += av_rescale_q(1, av_inv_q(ist->st->avg_frame_rate),
1497 AV_TIME_BASE_Q);
1498 else if (ist->dec_ctx->framerate.num != 0) {
1499 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 :
1500 ist->dec_ctx->ticks_per_frame;
1501 ist->next_dts += av_rescale_q(ticks, ist->dec_ctx->framerate, AV_TIME_BASE_Q);
1502 }
1503 break;
1504 case AVMEDIA_TYPE_SUBTITLE:
1505 if (repeating)
1506 break;
1507 ret = transcode_subtitles(ist, &avpkt, &got_output);
1508 break;
1509 default:
1510 return;
1511 }
1512
1513 if (ret < 0) {
1514 av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
1515 ist->file_index, ist->st->index);
1516 if (exit_on_error)
1517 exit_program(1);
1518 break;
1519 }
1520
1521 if (!got_output)
1522 break;
1523
1524 repeating = 1;
1525 }
1526
1527 /* after flushing, send an EOF on all the filter inputs attached to the stream */
1528 /* except when looping we need to flush but not to send an EOF */
1529 if (!pkt && ist->decoding_needed && !no_eof) {
1530 int ret = send_filter_eof(ist);
1531 if (ret < 0) {
1532 av_log(NULL, AV_LOG_FATAL, "Error marking filters as finished\n");
1533 exit_program(1);
1534 }
1535 }
1536
1537 /* handle stream copy */
1538 if (!ist->decoding_needed) {
1539 ist->last_dts = ist->next_dts;
1540 switch (ist->dec_ctx->codec_type) {
1541 case AVMEDIA_TYPE_AUDIO:
1542 ist->next_dts += ((int64_t)AV_TIME_BASE * ist->dec_ctx->frame_size) /
1543 ist->dec_ctx->sample_rate;
1544 break;
1545 case AVMEDIA_TYPE_VIDEO:
1546 if (ist->dec_ctx->framerate.num != 0) {
1547 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->dec_ctx->ticks_per_frame;
1548 ist->next_dts += ((int64_t)AV_TIME_BASE *
1549 ist->dec_ctx->framerate.den * ticks) /
1550 ist->dec_ctx->framerate.num;
1551 }
1552 break;
1553 }
1554 }
1555 for (i = 0; pkt && i < nb_output_streams; i++) {
1556 OutputStream *ost = output_streams[i];
1557
1558 if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1559 continue;
1560
1561 do_streamcopy(ist, ost, pkt);
1562 }
1563
1564 return;
1565 }
1566
1567 static void print_sdp(void)
1568 {
1569 char sdp[16384];
1570 int i;
1571 AVFormatContext **avc;
1572
1573 for (i = 0; i < nb_output_files; i++) {
1574 if (!output_files[i]->header_written)
1575 return;
1576 }
1577
1578 avc = av_malloc(sizeof(*avc) * nb_output_files);
1579 if (!avc)
1580 exit_program(1);
1581 for (i = 0; i < nb_output_files; i++)
1582 avc[i] = output_files[i]->ctx;
1583
1584 av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1585 printf("SDP:\n%s\n", sdp);
1586 fflush(stdout);
1587 av_freep(&avc);
1588 }
1589
1590 static const HWAccel *get_hwaccel(enum AVPixelFormat pix_fmt)
1591 {
1592 int i;
1593 for (i = 0; hwaccels[i].name; i++)
1594 if (hwaccels[i].pix_fmt == pix_fmt)
1595 return &hwaccels[i];
1596 return NULL;
1597 }
1598
1599 static enum AVPixelFormat get_format(AVCodecContext *s, const enum AVPixelFormat *pix_fmts)
1600 {
1601 InputStream *ist = s->opaque;
1602 const enum AVPixelFormat *p;
1603 int ret;
1604
1605 for (p = pix_fmts; *p != -1; p++) {
1606 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(*p);
1607 const HWAccel *hwaccel;
1608
1609 if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
1610 break;
1611
1612 hwaccel = get_hwaccel(*p);
1613 if (!hwaccel ||
1614 (ist->active_hwaccel_id && ist->active_hwaccel_id != hwaccel->id) ||
1615 (ist->hwaccel_id != HWACCEL_AUTO && ist->hwaccel_id != hwaccel->id))
1616 continue;
1617
1618 ret = hwaccel->init(s);
1619 if (ret < 0) {
1620 if (ist->hwaccel_id == hwaccel->id) {
1621 av_log(NULL, AV_LOG_FATAL,
1622 "%s hwaccel requested for input stream #%d:%d, "
1623 "but cannot be initialized.\n", hwaccel->name,
1624 ist->file_index, ist->st->index);
1625 return AV_PIX_FMT_NONE;
1626 }
1627 continue;
1628 }
1629
1630 if (ist->hw_frames_ctx) {
1631 s->hw_frames_ctx = av_buffer_ref(ist->hw_frames_ctx);
1632 if (!s->hw_frames_ctx)
1633 return AV_PIX_FMT_NONE;
1634 }
1635
1636 ist->active_hwaccel_id = hwaccel->id;
1637 ist->hwaccel_pix_fmt = *p;
1638 break;
1639 }
1640
1641 return *p;
1642 }
1643
1644 static int get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
1645 {
1646 InputStream *ist = s->opaque;
1647
1648 if (ist->hwaccel_get_buffer && frame->format == ist->hwaccel_pix_fmt)
1649 return ist->hwaccel_get_buffer(s, frame, flags);
1650
1651 return avcodec_default_get_buffer2(s, frame, flags);
1652 }
1653
1654 static int init_input_stream(int ist_index, char *error, int error_len)
1655 {
1656 int ret;
1657 InputStream *ist = input_streams[ist_index];
1658
1659 if (ist->decoding_needed) {
1660 AVCodec *codec = ist->dec;
1661 if (!codec) {
1662 snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d:%d",
1663 ist->dec_ctx->codec_id, ist->file_index, ist->st->index);
1664 return AVERROR(EINVAL);
1665 }
1666
1667 ist->dec_ctx->opaque = ist;
1668 ist->dec_ctx->get_format = get_format;
1669 ist->dec_ctx->get_buffer2 = get_buffer;
1670 ist->dec_ctx->thread_safe_callbacks = 1;
1671
1672 av_opt_set_int(ist->dec_ctx, "refcounted_frames", 1, 0);
1673
1674 if (!av_dict_get(ist->decoder_opts, "threads", NULL, 0))
1675 av_dict_set(&ist->decoder_opts, "threads", "auto", 0);
1676 if ((ret = avcodec_open2(ist->dec_ctx, codec, &ist->decoder_opts)) < 0) {
1677 char errbuf[128];
1678 if (ret == AVERROR_EXPERIMENTAL)
1679 abort_codec_experimental(codec, 0);
1680
1681 av_strerror(ret, errbuf, sizeof(errbuf));
1682
1683 snprintf(error, error_len,
1684 "Error while opening decoder for input stream "
1685 "#%d:%d : %s",
1686 ist->file_index, ist->st->index, errbuf);
1687 return ret;
1688 }
1689 assert_avoptions(ist->decoder_opts);
1690 }
1691
1692 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;
1693 ist->next_dts = AV_NOPTS_VALUE;
1694 init_pts_correction(&ist->pts_ctx);
1695
1696 return 0;
1697 }
1698
1699 static InputStream *get_input_stream(OutputStream *ost)
1700 {
1701 if (ost->source_index >= 0)
1702 return input_streams[ost->source_index];
1703
1704 if (ost->filter) {
1705 FilterGraph *fg = ost->filter->graph;
1706 int i;
1707
1708 for (i = 0; i < fg->nb_inputs; i++)
1709 if (fg->inputs[i]->ist->dec_ctx->codec_type == ost->enc_ctx->codec_type)
1710 return fg->inputs[i]->ist;
1711 }
1712
1713 return NULL;
1714 }
1715
1716 /* open the muxer when all the streams are initialized */
1717 static int check_init_output_file(OutputFile *of, int file_index)
1718 {
1719 int ret, i;
1720
1721 for (i = 0; i < of->ctx->nb_streams; i++) {
1722 OutputStream *ost = output_streams[of->ost_index + i];
1723 if (!ost->initialized)
1724 return 0;
1725 }
1726
1727 of->ctx->interrupt_callback = int_cb;
1728
1729 ret = avformat_write_header(of->ctx, &of->opts);
1730 if (ret < 0) {
1731 char errbuf[128];
1732
1733 av_strerror(ret, errbuf, sizeof(errbuf));
1734
1735 av_log(NULL, AV_LOG_ERROR,
1736 "Could not write header for output file #%d "
1737 "(incorrect codec parameters ?): %s",
1738 file_index, errbuf);
1739 return ret;
1740 }
1741 assert_avoptions(of->opts);
1742 of->header_written = 1;
1743
1744 av_dump_format(of->ctx, file_index, of->ctx->filename, 1);
1745
1746 if (want_sdp)
1747 print_sdp();
1748
1749 /* flush the muxing queues */
1750 for (i = 0; i < of->ctx->nb_streams; i++) {
1751 OutputStream *ost = output_streams[of->ost_index + i];
1752
1753 while (av_fifo_size(ost->muxing_queue)) {
1754 AVPacket pkt;
1755 av_fifo_generic_read(ost->muxing_queue, &pkt, sizeof(pkt), NULL);
1756 write_packet(of, &pkt, ost);
1757 }
1758 }
1759
1760 return 0;
1761 }
1762
1763 static int init_output_bsfs(OutputStream *ost)
1764 {
1765 AVBSFContext *ctx;
1766 int i, ret;
1767
1768 if (!ost->nb_bitstream_filters)
1769 return 0;
1770
1771 ost->bsf_ctx = av_mallocz_array(ost->nb_bitstream_filters, sizeof(*ost->bsf_ctx));
1772 if (!ost->bsf_ctx)
1773 return AVERROR(ENOMEM);
1774
1775 for (i = 0; i < ost->nb_bitstream_filters; i++) {
1776 ret = av_bsf_alloc(ost->bitstream_filters[i], &ctx);
1777 if (ret < 0) {
1778 av_log(NULL, AV_LOG_ERROR, "Error allocating a bitstream filter context\n");
1779 return ret;
1780 }
1781 ost->bsf_ctx[i] = ctx;
1782
1783 ret = avcodec_parameters_copy(ctx->par_in,
1784 i ? ost->bsf_ctx[i - 1]->par_out : ost->st->codecpar);
1785 if (ret < 0)
1786 return ret;
1787
1788 ctx->time_base_in = i ? ost->bsf_ctx[i - 1]->time_base_out : ost->st->time_base;
1789
1790 ret = av_bsf_init(ctx);
1791 if (ret < 0) {
1792 av_log(NULL, AV_LOG_ERROR, "Error initializing bitstream filter: %s\n",
1793 ost->bitstream_filters[i]->name);
1794 return ret;
1795 }
1796 }
1797
1798 ctx = ost->bsf_ctx[ost->nb_bitstream_filters - 1];
1799 ret = avcodec_parameters_copy(ost->st->codecpar, ctx->par_out);
1800 if (ret < 0)
1801 return ret;
1802
1803 ost->st->time_base = ctx->time_base_out;
1804
1805 return 0;
1806 }
1807
1808 static int init_output_stream_streamcopy(OutputStream *ost)
1809 {
1810 OutputFile *of = output_files[ost->file_index];
1811 InputStream *ist = get_input_stream(ost);
1812 AVCodecParameters *par_dst = ost->st->codecpar;
1813 AVCodecParameters *par_src = ist->st->codecpar;
1814 AVRational sar;
1815 uint32_t codec_tag = par_dst->codec_tag;
1816 int i, ret;
1817
1818 if (!codec_tag) {
1819 if (!of->ctx->oformat->codec_tag ||
1820 av_codec_get_id (of->ctx->oformat->codec_tag, par_src->codec_tag) == par_src->codec_id ||
1821 av_codec_get_tag(of->ctx->oformat->codec_tag, par_src->codec_id) <= 0)
1822 codec_tag = par_src->codec_tag;
1823 }
1824
1825 ret = avcodec_parameters_copy(par_dst, par_src);
1826 if (ret < 0)
1827 return ret;
1828
1829 par_dst->codec_tag = codec_tag;
1830
1831 ost->st->disposition = ist->st->disposition;
1832
1833 ost->st->time_base = ist->st->time_base;
1834
1835 if (ist->st->nb_side_data) {
1836 ost->st->side_data = av_realloc_array(NULL, ist->st->nb_side_data,
1837 sizeof(*ist->st->side_data));
1838 if (!ost->st->side_data)
1839 return AVERROR(ENOMEM);
1840
1841 for (i = 0; i < ist->st->nb_side_data; i++) {
1842 const AVPacketSideData *sd_src = &ist->st->side_data[i];
1843 AVPacketSideData *sd_dst = &ost->st->side_data[i];
1844
1845 sd_dst->data = av_malloc(sd_src->size);
1846 if (!sd_dst->data)
1847 return AVERROR(ENOMEM);
1848 memcpy(sd_dst->data, sd_src->data, sd_src->size);
1849 sd_dst->size = sd_src->size;
1850 sd_dst->type = sd_src->type;
1851 ost->st->nb_side_data++;
1852 }
1853 }
1854
1855 ost->parser = av_parser_init(par_dst->codec_id);
1856 ost->parser_avctx = avcodec_alloc_context3(NULL);
1857 if (!ost->parser_avctx)
1858 return AVERROR(ENOMEM);
1859
1860 if (par_dst->codec_type == AVMEDIA_TYPE_VIDEO) {
1861 if (ost->frame_aspect_ratio)
1862 sar = av_d2q(ost->frame_aspect_ratio * par_dst->height / par_dst->width, 255);
1863 else if (ist->st->sample_aspect_ratio.num)
1864 sar = ist->st->sample_aspect_ratio;
1865 else
1866 sar = par_src->sample_aspect_ratio;
1867 ost->st->sample_aspect_ratio = par_dst->sample_aspect_ratio = sar;
1868 }
1869
1870 return 0;
1871 }
1872
1873 static void set_encoder_id(OutputFile *of, OutputStream *ost)
1874 {
1875 AVDictionaryEntry *e;
1876
1877 uint8_t *encoder_string;
1878 int encoder_string_len;
1879 int format_flags = 0;
1880
1881 e = av_dict_get(of->opts, "fflags", NULL, 0);
1882 if (e) {
1883 const AVOption *o = av_opt_find(of->ctx, "fflags", NULL, 0, 0);
1884 if (!o)
1885 return;
1886 av_opt_eval_flags(of->ctx, o, e->value, &format_flags);
1887 }
1888
1889 encoder_string_len = sizeof(LIBAVCODEC_IDENT) + strlen(ost->enc->name) + 2;
1890 encoder_string = av_mallocz(encoder_string_len);
1891 if (!encoder_string)
1892 exit_program(1);
1893
1894 if (!(format_flags & AVFMT_FLAG_BITEXACT))
1895 av_strlcpy(encoder_string, LIBAVCODEC_IDENT " ", encoder_string_len);
1896 av_strlcat(encoder_string, ost->enc->name, encoder_string_len);
1897 av_dict_set(&ost->st->metadata, "encoder", encoder_string,
1898 AV_DICT_DONT_STRDUP_VAL | AV_DICT_DONT_OVERWRITE);
1899 }
1900
1901 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1902 AVCodecContext *avctx)
1903 {
1904 char *p;
1905 int n = 1, i;
1906 int64_t t;
1907
1908 for (p = kf; *p; p++)
1909 if (*p == ',')
1910 n++;
1911 ost->forced_kf_count = n;
1912 ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1913 if (!ost->forced_kf_pts) {
1914 av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1915 exit_program(1);
1916 }
1917
1918 p = kf;
1919 for (i = 0; i < n; i++) {
1920 char *next = strchr(p, ',');
1921
1922 if (next)
1923 *next++ = 0;
1924
1925 t = parse_time_or_die("force_key_frames", p, 1);
1926 ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1927
1928 p = next;
1929 }
1930 }
1931
1932 static int init_output_stream_encode(OutputStream *ost)
1933 {
1934 InputStream *ist = get_input_stream(ost);
1935 AVCodecContext *enc_ctx = ost->enc_ctx;
1936 AVCodecContext *dec_ctx = NULL;
1937
1938 set_encoder_id(output_files[ost->file_index], ost);
1939
1940 if (ist) {
1941 ost->st->disposition = ist->st->disposition;
1942
1943 dec_ctx = ist->dec_ctx;
1944
1945 enc_ctx->bits_per_raw_sample = dec_ctx->bits_per_raw_sample;
1946 enc_ctx->chroma_sample_location = dec_ctx->chroma_sample_location;
1947 }
1948
1949 switch (enc_ctx->codec_type) {
1950 case AVMEDIA_TYPE_AUDIO:
1951 enc_ctx->sample_fmt = ost->filter->filter->inputs[0]->format;
1952 enc_ctx->sample_rate = ost->filter->filter->inputs[0]->sample_rate;
1953 enc_ctx->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
1954 enc_ctx->channels = av_get_channel_layout_nb_channels(enc_ctx->channel_layout);
1955 enc_ctx->time_base = (AVRational){ 1, enc_ctx->sample_rate };
1956 break;
1957 case AVMEDIA_TYPE_VIDEO:
1958 enc_ctx->time_base = ost->filter->filter->inputs[0]->time_base;
1959
1960 enc_ctx->width = ost->filter->filter->inputs[0]->w;
1961 enc_ctx->height = ost->filter->filter->inputs[0]->h;
1962 enc_ctx->sample_aspect_ratio = ost->st->sample_aspect_ratio =
1963 ost->frame_aspect_ratio ? // overridden by the -aspect cli option
1964 av_d2q(ost->frame_aspect_ratio * enc_ctx->height/enc_ctx->width, 255) :
1965 ost->filter->filter->inputs[0]->sample_aspect_ratio;
1966 enc_ctx->pix_fmt = ost->filter->filter->inputs[0]->format;
1967
1968 ost->st->avg_frame_rate = ost->frame_rate;
1969
1970 if (dec_ctx &&
1971 (enc_ctx->width != dec_ctx->width ||
1972 enc_ctx->height != dec_ctx->height ||
1973 enc_ctx->pix_fmt != dec_ctx->pix_fmt)) {
1974 enc_ctx->bits_per_raw_sample = 0;
1975 }
1976
1977 if (ost->forced_keyframes)
1978 parse_forced_key_frames(ost->forced_keyframes, ost,
1979 ost->enc_ctx);
1980 break;
1981 case AVMEDIA_TYPE_SUBTITLE:
1982 enc_ctx->time_base = (AVRational){1, 1000};
1983 break;
1984 default:
1985 abort();
1986 break;
1987 }
1988
1989 return 0;
1990 }
1991
1992 static int init_output_stream(OutputStream *ost, char *error, int error_len)
1993 {
1994 int ret = 0;
1995
1996 if (ost->encoding_needed) {
1997 AVCodec *codec = ost->enc;
1998 AVCodecContext *dec = NULL;
1999 InputStream *ist;
2000
2001 ret = init_output_stream_encode(ost);
2002 if (ret < 0)
2003 return ret;
2004
2005 if ((ist = get_input_stream(ost)))
2006 dec = ist->dec_ctx;
2007 if (dec && dec->subtitle_header) {
2008 ost->enc_ctx->subtitle_header = av_malloc(dec->subtitle_header_size);
2009 if (!ost->enc_ctx->subtitle_header)
2010 return AVERROR(ENOMEM);
2011 memcpy(ost->enc_ctx->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2012 ost->enc_ctx->subtitle_header_size = dec->subtitle_header_size;
2013 }
2014 if (!av_dict_get(ost->encoder_opts, "threads", NULL, 0))
2015 av_dict_set(&ost->encoder_opts, "threads", "auto", 0);
2016
2017 if (ost->filter && ost->filter->filter->inputs[0]->hw_frames_ctx) {
2018 ost->enc_ctx->hw_frames_ctx = av_buffer_ref(ost->filter->filter->inputs[0]->hw_frames_ctx);
2019 if (!ost->enc_ctx->hw_frames_ctx)
2020 return AVERROR(ENOMEM);
2021 }
2022
2023 if ((ret = avcodec_open2(ost->enc_ctx, codec, &ost->encoder_opts)) < 0) {
2024 if (ret == AVERROR_EXPERIMENTAL)
2025 abort_codec_experimental(codec, 1);
2026 snprintf(error, error_len,
2027 "Error while opening encoder for output stream #%d:%d - "
2028 "maybe incorrect parameters such as bit_rate, rate, width or height",
2029 ost->file_index, ost->index);
2030 return ret;
2031 }
2032 assert_avoptions(ost->encoder_opts);
2033 if (ost->enc_ctx->bit_rate && ost->enc_ctx->bit_rate < 1000)
2034 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2035 "It takes bits/s as argument, not kbits/s\n");
2036
2037 ret = avcodec_parameters_from_context(ost->st->codecpar, ost->enc_ctx);
2038 if (ret < 0) {
2039 av_log(NULL, AV_LOG_FATAL,
2040 "Error initializing the output stream codec context.\n");
2041 exit_program(1);
2042 }
2043
2044 if (ost->enc_ctx->nb_coded_side_data) {
2045 int i;
2046
2047 ost->st->side_data = av_realloc_array(NULL, ost->enc_ctx->nb_coded_side_data,
2048 sizeof(*ost->st->side_data));
2049 if (!ost->st->side_data)
2050 return AVERROR(ENOMEM);
2051
2052 for (i = 0; i < ost->enc_ctx->nb_coded_side_data; i++) {
2053 const AVPacketSideData *sd_src = &ost->enc_ctx->coded_side_data[i];
2054 AVPacketSideData *sd_dst = &ost->st->side_data[i];
2055
2056 sd_dst->data = av_malloc(sd_src->size);
2057 if (!sd_dst->data)
2058 return AVERROR(ENOMEM);
2059 memcpy(sd_dst->data, sd_src->data, sd_src->size);
2060 sd_dst->size = sd_src->size;
2061 sd_dst->type = sd_src->type;
2062 ost->st->nb_side_data++;
2063 }
2064 }
2065
2066 ost->st->time_base = ost->enc_ctx->time_base;
2067 } else if (ost->stream_copy) {
2068 ret = init_output_stream_streamcopy(ost);
2069 if (ret < 0)
2070 return ret;
2071
2072 /*
2073 * FIXME: will the codec context used by the parser during streamcopy
2074 * This should go away with the new parser API.
2075 */
2076 ret = avcodec_parameters_to_context(ost->parser_avctx, ost->st->codecpar);
2077 if (ret < 0)
2078 return ret;
2079 }
2080
2081 /* initialize bitstream filters for the output stream
2082 * needs to be done here, because the codec id for streamcopy is not
2083 * known until now */
2084 ret = init_output_bsfs(ost);
2085 if (ret < 0)
2086 return ret;
2087
2088 ost->mux_timebase = ost->st->time_base;
2089
2090 ost->initialized = 1;
2091
2092 ret = check_init_output_file(output_files[ost->file_index], ost->file_index);
2093 if (ret < 0)
2094 return ret;
2095
2096 return ret;
2097 }
2098
2099 static int transcode_init(void)
2100 {
2101 int ret = 0, i, j, k;
2102 OutputStream *ost;
2103 InputStream *ist;
2104 char error[1024];
2105
2106 /* init framerate emulation */
2107 for (i = 0; i < nb_input_files; i++) {
2108 InputFile *ifile = input_files[i];
2109 if (ifile->rate_emu)
2110 for (j = 0; j < ifile->nb_streams; j++)
2111 input_streams[j + ifile->ist_index]->start = av_gettime_relative();
2112 }
2113
2114 /* init input streams */
2115 for (i = 0; i < nb_input_streams; i++)
2116 if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
2117 goto dump_format;
2118
2119 /* open each encoder */
2120 for (i = 0; i < nb_output_streams; i++) {
2121 // skip streams fed from filtergraphs until we have a frame for them
2122 if (output_streams[i]->filter)
2123 continue;
2124
2125 ret = init_output_stream(output_streams[i], error, sizeof(error));
2126 if (ret < 0)
2127 goto dump_format;
2128 }
2129
2130
2131 /* discard unused programs */
2132 for (i = 0; i < nb_input_files; i++) {
2133 InputFile *ifile = input_files[i];
2134 for (j = 0; j < ifile->ctx->nb_programs; j++) {
2135 AVProgram *p = ifile->ctx->programs[j];
2136 int discard = AVDISCARD_ALL;
2137
2138 for (k = 0; k < p->nb_stream_indexes; k++)
2139 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2140 discard = AVDISCARD_DEFAULT;
2141 break;
2142 }
2143 p->discard = discard;
2144 }
2145 }
2146
2147 dump_format:
2148 /* dump the stream mapping */
2149 av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2150 for (i = 0; i < nb_input_streams; i++) {
2151 ist = input_streams[i];
2152
2153 for (j = 0; j < ist->nb_filters; j++) {
2154 if (!filtergraph_is_simple(ist->filters[j]->graph)) {
2155 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d (%s) -> %s",
2156 ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2157 ist->filters[j]->name);
2158 if (nb_filtergraphs > 1)
2159 av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2160 av_log(NULL, AV_LOG_INFO, "\n");
2161 }
2162 }
2163 }
2164
2165 for (i = 0; i < nb_output_streams; i++) {
2166 ost = output_streams[i];
2167
2168 if (ost->attachment_filename) {
2169 /* an attached file */
2170 av_log(NULL, AV_LOG_INFO, " File %s -> Stream #%d:%d\n",
2171 ost->attachment_filename, ost->file_index, ost->index);
2172 continue;
2173 }
2174
2175 if (ost->filter && !filtergraph_is_simple(ost->filter->graph)) {
2176 /* output from a complex graph */
2177 av_log(NULL, AV_LOG_INFO, " %s", ost->filter->name);
2178 if (nb_filtergraphs > 1)
2179 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2180
2181 av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2182 ost->index, ost->enc ? ost->enc->name : "?");
2183 continue;
2184 }
2185
2186 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d -> #%d:%d",
2187 input_streams[ost->source_index]->file_index,
2188 input_streams[ost->source_index]->st->index,
2189 ost->file_index,
2190 ost->index);
2191 if (ost->sync_ist != input_streams[ost->source_index])
2192 av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2193 ost->sync_ist->file_index,
2194 ost->sync_ist->st->index);
2195 if (ost->stream_copy)
2196 av_log(NULL, AV_LOG_INFO, " (copy)");
2197 else {
2198 const AVCodec *in_codec = input_streams[ost->source_index]->dec;
2199 const AVCodec *out_codec = ost->enc;
2200 const char *decoder_name = "?";
2201 const char *in_codec_name = "?";
2202 const char *encoder_name = "?";
2203 const char *out_codec_name = "?";
2204 const AVCodecDescriptor *desc;
2205
2206 if (in_codec) {
2207 decoder_name = in_codec->name;
2208 desc = avcodec_descriptor_get(in_codec->id);
2209 if (desc)
2210 in_codec_name = desc->name;
2211 if (!strcmp(decoder_name, in_codec_name))
2212 decoder_name = "native";
2213 }
2214
2215 if (out_codec) {
2216 encoder_name = out_codec->name;
2217 desc = avcodec_descriptor_get(out_codec->id);
2218 if (desc)
2219 out_codec_name = desc->name;
2220 if (!strcmp(encoder_name, out_codec_name))
2221 encoder_name = "native";
2222 }
2223
2224 av_log(NULL, AV_LOG_INFO, " (%s (%s) -> %s (%s))",
2225 in_codec_name, decoder_name,
2226 out_codec_name, encoder_name);
2227 }
2228 av_log(NULL, AV_LOG_INFO, "\n");
2229 }
2230
2231 if (ret) {
2232 av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2233 return ret;
2234 }
2235
2236 return 0;
2237 }
2238
2239 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2240 static int need_output(void)
2241 {
2242 int i;
2243
2244 for (i = 0; i < nb_output_streams; i++) {
2245 OutputStream *ost = output_streams[i];
2246 OutputFile *of = output_files[ost->file_index];
2247 AVFormatContext *os = output_files[ost->file_index]->ctx;
2248
2249 if (ost->finished ||
2250 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2251 continue;
2252 if (ost->frame_number >= ost->max_frames) {
2253 int j;
2254 for (j = 0; j < of->ctx->nb_streams; j++)
2255 output_streams[of->ost_index + j]->finished = 1;
2256 continue;
2257 }
2258
2259 return 1;
2260 }
2261
2262 return 0;
2263 }
2264
2265 static InputFile *select_input_file(void)
2266 {
2267 InputFile *ifile = NULL;
2268 int64_t ipts_min = INT64_MAX;
2269 int i;
2270
2271 for (i = 0; i < nb_input_streams; i++) {
2272 InputStream *ist = input_streams[i];
2273 int64_t ipts = ist->last_dts;
2274
2275 if (ist->discard || input_files[ist->file_index]->eagain)
2276 continue;
2277 if (!input_files[ist->file_index]->eof_reached) {
2278 if (ipts < ipts_min) {
2279 ipts_min = ipts;
2280 ifile = input_files[ist->file_index];
2281 }
2282 }
2283 }
2284
2285 return ifile;
2286 }
2287
2288 #if HAVE_PTHREADS
2289 static void *input_thread(void *arg)
2290 {
2291 InputFile *f = arg;
2292 int ret = 0;
2293
2294 while (!transcoding_finished && ret >= 0) {
2295 AVPacket pkt;
2296 ret = av_read_frame(f->ctx, &pkt);
2297
2298 if (ret == AVERROR(EAGAIN)) {
2299 av_usleep(10000);
2300 ret = 0;
2301 continue;
2302 } else if (ret < 0)
2303 break;
2304
2305 pthread_mutex_lock(&f->fifo_lock);
2306 while (!av_fifo_space(f->fifo))
2307 pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2308
2309 av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2310
2311 pthread_mutex_unlock(&f->fifo_lock);
2312 }
2313
2314 f->finished = 1;
2315 return NULL;
2316 }
2317
2318 static void free_input_threads(void)
2319 {
2320 int i;
2321
2322 if (nb_input_files == 1)
2323 return;
2324
2325 transcoding_finished = 1;
2326
2327 for (i = 0; i < nb_input_files; i++) {
2328 InputFile *f = input_files[i];
2329 AVPacket pkt;
2330
2331 if (!f->fifo || f->joined)
2332 continue;
2333
2334 pthread_mutex_lock(&f->fifo_lock);
2335 while (av_fifo_size(f->fifo)) {
2336 av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2337 av_packet_unref(&pkt);
2338 }
2339 pthread_cond_signal(&f->fifo_cond);
2340 pthread_mutex_unlock(&f->fifo_lock);
2341
2342 pthread_join(f->thread, NULL);
2343 f->joined = 1;
2344
2345 while (av_fifo_size(f->fifo)) {
2346 av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2347 av_packet_unref(&pkt);
2348 }
2349 av_fifo_free(f->fifo);
2350 }
2351 }
2352
2353 static int init_input_threads(void)
2354 {
2355 int i, ret;
2356
2357 if (nb_input_files == 1)
2358 return 0;
2359
2360 for (i = 0; i < nb_input_files; i++) {
2361 InputFile *f = input_files[i];
2362
2363 if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2364 return AVERROR(ENOMEM);
2365
2366 pthread_mutex_init(&f->fifo_lock, NULL);
2367 pthread_cond_init (&f->fifo_cond, NULL);
2368
2369 if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2370 return AVERROR(ret);
2371 }
2372 return 0;
2373 }
2374
2375 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2376 {
2377 int ret = 0;
2378
2379 pthread_mutex_lock(&f->fifo_lock);
2380
2381 if (av_fifo_size(f->fifo)) {
2382 av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2383 pthread_cond_signal(&f->fifo_cond);
2384 } else {
2385 if (f->finished)
2386 ret = AVERROR_EOF;
2387 else
2388 ret = AVERROR(EAGAIN);
2389 }
2390
2391 pthread_mutex_unlock(&f->fifo_lock);
2392
2393 return ret;
2394 }
2395 #endif
2396
2397 static int get_input_packet(InputFile *f, AVPacket *pkt)
2398 {
2399 if (f->rate_emu) {
2400 int i;
2401 for (i = 0; i < f->nb_streams; i++) {
2402 InputStream *ist = input_streams[f->ist_index + i];
2403 int64_t pts = av_rescale(ist->last_dts, 1000000, AV_TIME_BASE);
2404 int64_t now = av_gettime_relative() - ist->start;
2405 if (pts > now)
2406 return AVERROR(EAGAIN);
2407 }
2408 }
2409
2410 #if HAVE_PTHREADS
2411 if (nb_input_files > 1)
2412 return get_input_packet_mt(f, pkt);
2413 #endif
2414 return av_read_frame(f->ctx, pkt);
2415 }
2416
2417 static int got_eagain(void)
2418 {
2419 int i;
2420 for (i = 0; i < nb_input_files; i++)
2421 if (input_files[i]->eagain)
2422 return 1;
2423 return 0;
2424 }
2425
2426 static void reset_eagain(void)
2427 {
2428 int i;
2429 for (i = 0; i < nb_input_files; i++)
2430 input_files[i]->eagain = 0;
2431 }
2432
2433 // set duration to max(tmp, duration) in a proper time base and return duration's time_base
2434 static AVRational duration_max(int64_t tmp, int64_t *duration, AVRational tmp_time_base,
2435 AVRational time_base)
2436 {
2437 int ret;
2438
2439 if (!*duration) {
2440 *duration = tmp;
2441 return tmp_time_base;
2442 }
2443
2444 ret = av_compare_ts(*duration, time_base, tmp, tmp_time_base);
2445 if (ret < 0) {
2446 *duration = tmp;
2447 return tmp_time_base;
2448 }
2449
2450 return time_base;
2451 }
2452
2453 static int seek_to_start(InputFile *ifile, AVFormatContext *is)
2454 {
2455 InputStream *ist;
2456 AVCodecContext *avctx;
2457 int i, ret, has_audio = 0;
2458 int64_t duration = 0;
2459
2460 ret = av_seek_frame(is, -1, is->start_time, 0);
2461 if (ret < 0)
2462 return ret;
2463
2464 for (i = 0; i < ifile->nb_streams; i++) {
2465 ist = input_streams[ifile->ist_index + i];
2466 avctx = ist->dec_ctx;
2467
2468 // flush decoders
2469 if (ist->decoding_needed) {
2470 process_input_packet(ist, NULL, 1);
2471 avcodec_flush_buffers(avctx);
2472 }
2473
2474 /* duration is the length of the last frame in a stream
2475 * when audio stream is present we don't care about
2476 * last video frame length because it's not defined exactly */
2477 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && ist->nb_samples)
2478 has_audio = 1;
2479 }
2480
2481 for (i = 0; i < ifile->nb_streams; i++) {
2482 ist = input_streams[ifile->ist_index + i];
2483 avctx = ist->dec_ctx;
2484
2485 if (has_audio) {
2486 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && ist->nb_samples) {
2487 AVRational sample_rate = {1, avctx->sample_rate};
2488
2489 duration = av_rescale_q(ist->nb_samples, sample_rate, ist->st->time_base);
2490 } else
2491 continue;
2492 } else {
2493 if (ist->framerate.num) {
2494 duration = av_rescale_q(1, ist->framerate, ist->st->time_base);
2495 } else if (ist->st->avg_frame_rate.num) {
2496 duration = av_rescale_q(1, ist->st->avg_frame_rate, ist->st->time_base);
2497 } else duration = 1;
2498 }
2499 if (!ifile->duration)
2500 ifile->time_base = ist->st->time_base;
2501 /* the total duration of the stream, max_pts - min_pts is
2502 * the duration of the stream without the last frame */
2503 duration += ist->max_pts - ist->min_pts;
2504 ifile->time_base = duration_max(duration, &ifile->duration, ist->st->time_base,
2505 ifile->time_base);
2506 }
2507
2508 if (ifile->loop > 0)
2509 ifile->loop--;
2510
2511 return ret;
2512 }
2513
2514 /*
2515 * Read one packet from an input file and send it for
2516 * - decoding -> lavfi (audio/video)
2517 * - decoding -> encoding -> muxing (subtitles)
2518 * - muxing (streamcopy)
2519 *
2520 * Return
2521 * - 0 -- one packet was read and processed
2522 * - AVERROR(EAGAIN) -- no packets were available for selected file,
2523 * this function should be called again
2524 * - AVERROR_EOF -- this function should not be called again
2525 */
2526 static int process_input(void)
2527 {
2528 InputFile *ifile;
2529 AVFormatContext *is;
2530 InputStream *ist;
2531 AVPacket pkt;
2532 int ret, i, j;
2533 int64_t duration;
2534
2535 /* select the stream that we must read now */
2536 ifile = select_input_file();
2537 /* if none, if is finished */
2538 if (!ifile) {
2539 if (got_eagain()) {
2540 reset_eagain();
2541 av_usleep(10000);
2542 return AVERROR(EAGAIN);
2543 }
2544 av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from.\n");
2545 return AVERROR_EOF;
2546 }
2547
2548 is = ifile->ctx;
2549 ret = get_input_packet(ifile, &pkt);
2550
2551 if (ret == AVERROR(EAGAIN)) {
2552 ifile->eagain = 1;
2553 return ret;
2554 }
2555 if (ret < 0 && ifile->loop) {
2556 if ((ret = seek_to_start(ifile, is)) < 0)
2557 return ret;
2558 ret = get_input_packet(ifile, &pkt);
2559 }
2560 if (ret < 0) {
2561 if (ret != AVERROR_EOF) {
2562 print_error(is->filename, ret);
2563 if (exit_on_error)
2564 exit_program(1);
2565 }
2566 ifile->eof_reached = 1;
2567
2568 for (i = 0; i < ifile->nb_streams; i++) {
2569 ist = input_streams[ifile->ist_index + i];
2570 if (ist->decoding_needed)
2571 process_input_packet(ist, NULL, 0);
2572
2573 /* mark all outputs that don't go through lavfi as finished */
2574 for (j = 0; j < nb_output_streams; j++) {
2575 OutputStream *ost = output_streams[j];
2576
2577 if (ost->source_index == ifile->ist_index + i &&
2578 (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2579 finish_output_stream(ost);
2580 }
2581 }
2582
2583 return AVERROR(EAGAIN);
2584 }
2585
2586 reset_eagain();
2587
2588 if (do_pkt_dump) {
2589 av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2590 is->streams[pkt.stream_index]);
2591 }
2592 /* the following test is needed in case new streams appear
2593 dynamically in stream : we ignore them */
2594 if (pkt.stream_index >= ifile->nb_streams)
2595 goto discard_packet;
2596
2597 ist = input_streams[ifile->ist_index + pkt.stream_index];
2598
2599 ist->data_size += pkt.size;
2600 ist->nb_packets++;
2601
2602 if (ist->discard)
2603 goto discard_packet;
2604
2605 /* add the stream-global side data to the first packet */
2606 if (ist->nb_packets == 1)
2607 for (i = 0; i < ist->st->nb_side_data; i++) {
2608 AVPacketSideData *src_sd = &ist->st->side_data[i];
2609 uint8_t *dst_data;
2610
2611 if (av_packet_get_side_data(&pkt, src_sd->type, NULL))
2612 continue;
2613 if (ist->autorotate && src_sd->type == AV_PKT_DATA_DISPLAYMATRIX)
2614 continue;
2615
2616 dst_data = av_packet_new_side_data(&pkt, src_sd->type, src_sd->size);
2617 if (!dst_data)
2618 exit_program(1);
2619
2620 memcpy(dst_data, src_sd->data, src_sd->size);
2621 }
2622
2623 if (pkt.dts != AV_NOPTS_VALUE)
2624 pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2625 if (pkt.pts != AV_NOPTS_VALUE)
2626 pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2627
2628 if (pkt.pts != AV_NOPTS_VALUE)
2629 pkt.pts *= ist->ts_scale;
2630 if (pkt.dts != AV_NOPTS_VALUE)
2631 pkt.dts *= ist->ts_scale;
2632
2633 if ((ist->dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
2634 ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) &&
2635 pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2636 (is->iformat->flags & AVFMT_TS_DISCONT)) {
2637 int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2638 int64_t delta = pkt_dts - ist->next_dts;
2639
2640 if ((FFABS(delta) > 1LL * dts_delta_threshold * AV_TIME_BASE || pkt_dts + 1 < ist->last_dts) && !copy_ts) {
2641 ifile->ts_offset -= delta;
2642 av_log(NULL, AV_LOG_DEBUG,
2643 "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2644 delta, ifile->ts_offset);
2645 pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2646 if (pkt.pts != AV_NOPTS_VALUE)
2647 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2648 }
2649 }
2650 duration = av_rescale_q(ifile->duration, ifile->time_base, ist->st->time_base);
2651 if (pkt.pts != AV_NOPTS_VALUE) {
2652 pkt.pts += duration;
2653 ist->max_pts = FFMAX(pkt.pts, ist->max_pts);
2654 ist->min_pts = FFMIN(pkt.pts, ist->min_pts);
2655 }
2656
2657 if (pkt.dts != AV_NOPTS_VALUE)
2658 pkt.dts += duration;
2659
2660 process_input_packet(ist, &pkt, 0);
2661
2662 discard_packet:
2663 av_packet_unref(&pkt);
2664
2665 return 0;
2666 }
2667
2668 /*
2669 * The following code is the main loop of the file converter
2670 */
2671 static int transcode(void)
2672 {
2673 int ret, i, need_input = 1;
2674 AVFormatContext *os;
2675 OutputStream *ost;
2676 InputStream *ist;
2677 int64_t timer_start;
2678
2679 ret = transcode_init();
2680 if (ret < 0)
2681 goto fail;
2682
2683 av_log(NULL, AV_LOG_INFO, "Press ctrl-c to stop encoding\n");
2684 term_init();
2685
2686 timer_start = av_gettime_relative();
2687
2688 #if HAVE_PTHREADS
2689 if ((ret = init_input_threads()) < 0)
2690 goto fail;
2691 #endif
2692
2693 while (!received_sigterm) {
2694 /* check if there's any stream where output is still needed */
2695 if (!need_output()) {
2696 av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
2697 break;
2698 }
2699
2700 /* read and process one input packet if needed */
2701 if (need_input) {
2702 ret = process_input();
2703 if (ret == AVERROR_EOF)
2704 need_input = 0;
2705 }
2706
2707 ret = poll_filters();
2708 if (ret < 0 && ret != AVERROR_EOF) {
2709 char errbuf[128];
2710 av_strerror(ret, errbuf, sizeof(errbuf));
2711
2712 av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n", errbuf);
2713 break;
2714 }
2715
2716 /* dump report by using the output first video and audio streams */
2717 print_report(0, timer_start);
2718 }
2719 #if HAVE_PTHREADS
2720 free_input_threads();
2721 #endif
2722
2723 /* at the end of stream, we must flush the decoder buffers */
2724 for (i = 0; i < nb_input_streams; i++) {
2725 ist = input_streams[i];
2726 if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
2727 process_input_packet(ist, NULL, 0);
2728 }
2729 }
2730 poll_filters();
2731 flush_encoders();
2732
2733 term_exit();
2734
2735 /* write the trailer if needed and close file */
2736 for (i = 0; i < nb_output_files; i++) {
2737 os = output_files[i]->ctx;
2738 if (!output_files[i]->header_written) {
2739 av_log(NULL, AV_LOG_ERROR,
2740 "Nothing was written into output file %d (%s), because "
2741 "at least one of its streams received no packets.\n",
2742 i, os->filename);
2743 continue;
2744 }
2745 av_write_trailer(os);
2746 }
2747
2748 /* dump report by using the first video and audio streams */
2749 print_report(1, timer_start);
2750
2751 /* close each encoder */
2752 for (i = 0; i < nb_output_streams; i++) {
2753 ost = output_streams[i];
2754 if (ost->encoding_needed) {
2755 av_freep(&ost->enc_ctx->stats_in);
2756 }
2757 }
2758
2759 /* close each decoder */
2760 for (i = 0; i < nb_input_streams; i++) {
2761 ist = input_streams[i];
2762 if (ist->decoding_needed) {
2763 avcodec_close(ist->dec_ctx);
2764 if (ist->hwaccel_uninit)
2765 ist->hwaccel_uninit(ist->dec_ctx);
2766 }
2767 }
2768
2769 av_buffer_unref(&hw_device_ctx);
2770
2771 /* finished ! */
2772 ret = 0;
2773
2774 fail:
2775 #if HAVE_PTHREADS
2776 free_input_threads();
2777 #endif
2778
2779 if (output_streams) {
2780 for (i = 0; i < nb_output_streams; i++) {
2781 ost = output_streams[i];
2782 if (ost) {
2783 if (ost->logfile) {
2784 fclose(ost->logfile);
2785 ost->logfile = NULL;
2786 }
2787 av_free(ost->forced_kf_pts);
2788 av_dict_free(&ost->encoder_opts);
2789 av_dict_free(&ost->resample_opts);
2790 }
2791 }
2792 }
2793 return ret;
2794 }
2795
2796 static int64_t getutime(void)
2797 {
2798 #if HAVE_GETRUSAGE
2799 struct rusage rusage;
2800
2801 getrusage(RUSAGE_SELF, &rusage);
2802 return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
2803 #elif HAVE_GETPROCESSTIMES
2804 HANDLE proc;
2805 FILETIME c, e, k, u;
2806 proc = GetCurrentProcess();
2807 GetProcessTimes(proc, &c, &e, &k, &u);
2808 return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
2809 #else
2810 return av_gettime_relative();
2811 #endif
2812 }
2813
2814 static int64_t getmaxrss(void)
2815 {
2816 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
2817 struct rusage rusage;
2818 getrusage(RUSAGE_SELF, &rusage);
2819 return (int64_t)rusage.ru_maxrss * 1024;
2820 #elif HAVE_GETPROCESSMEMORYINFO
2821 HANDLE proc;
2822 PROCESS_MEMORY_COUNTERS memcounters;
2823 proc = GetCurrentProcess();
2824 memcounters.cb = sizeof(memcounters);
2825 GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
2826 return memcounters.PeakPagefileUsage;
2827 #else
2828 return 0;
2829 #endif
2830 }
2831
2832 int main(int argc, char **argv)
2833 {
2834 int i, ret;
2835 int64_t ti;
2836
2837 register_exit(avconv_cleanup);
2838
2839 av_log_set_flags(AV_LOG_SKIP_REPEATED);
2840 parse_loglevel(argc, argv, options);
2841
2842 avcodec_register_all();
2843 #if CONFIG_AVDEVICE
2844 avdevice_register_all();
2845 #endif
2846 avfilter_register_all();
2847 av_register_all();
2848 avformat_network_init();
2849
2850 show_banner();
2851
2852 /* parse options and open all input/output files */
2853 ret = avconv_parse_options(argc, argv);
2854 if (ret < 0)
2855 exit_program(1);
2856
2857 if (nb_output_files <= 0 && nb_input_files == 0) {
2858 show_usage();
2859 av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
2860 exit_program(1);
2861 }
2862
2863 /* file converter / grab */
2864 if (nb_output_files <= 0) {
2865 fprintf(stderr, "At least one output file must be specified\n");
2866 exit_program(1);
2867 }
2868
2869 for (i = 0; i < nb_output_files; i++) {
2870 if (strcmp(output_files[i]->ctx->oformat->name, "rtp"))
2871 want_sdp = 0;
2872 }
2873
2874 ti = getutime();
2875 if (transcode() < 0)
2876 exit_program(1);
2877 ti = getutime() - ti;
2878 if (do_benchmark) {
2879 int maxrss = getmaxrss() / 1024;
2880 printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss);
2881 }
2882
2883 exit_program(0);
2884 return 0;
2885 }