avconv: support parsing bitstream filter options
[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
194 av_frame_free(&ost->filtered_frame);
195
196 av_parser_close(ost->parser);
197 avcodec_free_context(&ost->parser_avctx);
198
199 av_freep(&ost->forced_keyframes);
200 av_freep(&ost->avfilter);
201 av_freep(&ost->logfile_prefix);
202
203 avcodec_free_context(&ost->enc_ctx);
204
205 if (ost->muxing_queue) {
206 while (av_fifo_size(ost->muxing_queue)) {
207 AVPacket pkt;
208 av_log(NULL, AV_LOG_INFO, "after av_fifo_size()\n");
209 av_fifo_generic_read(ost->muxing_queue, &pkt, sizeof(pkt), NULL);
210 av_packet_unref(&pkt);
211 }
212 av_fifo_free(ost->muxing_queue);
213 }
214 av_freep(&output_streams[i]);
215 }
216 for (i = 0; i < nb_input_files; i++) {
217 avformat_close_input(&input_files[i]->ctx);
218 av_freep(&input_files[i]);
219 }
220 for (i = 0; i < nb_input_streams; i++) {
221 InputStream *ist = input_streams[i];
222
223 av_frame_free(&ist->decoded_frame);
224 av_frame_free(&ist->filter_frame);
225 av_dict_free(&ist->decoder_opts);
226 av_freep(&ist->filters);
227 av_freep(&ist->hwaccel_device);
228
229 avcodec_free_context(&ist->dec_ctx);
230
231 av_freep(&input_streams[i]);
232 }
233
234 if (vstats_file)
235 fclose(vstats_file);
236 av_free(vstats_filename);
237
238 av_freep(&input_streams);
239 av_freep(&input_files);
240 av_freep(&output_streams);
241 av_freep(&output_files);
242
243 uninit_opts();
244
245 avformat_network_deinit();
246
247 if (received_sigterm) {
248 av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
249 (int) received_sigterm);
250 exit (255);
251 }
252 }
253
254 void assert_avoptions(AVDictionary *m)
255 {
256 AVDictionaryEntry *t;
257 if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
258 av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
259 exit_program(1);
260 }
261 }
262
263 static void abort_codec_experimental(AVCodec *c, int encoder)
264 {
265 const char *codec_string = encoder ? "encoder" : "decoder";
266 AVCodec *codec;
267 av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
268 "results.\nAdd '-strict experimental' if you want to use it.\n",
269 codec_string, c->name);
270 codec = encoder ? avcodec_find_encoder(c->id) : avcodec_find_decoder(c->id);
271 if (!(codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL))
272 av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
273 codec_string, codec->name);
274 exit_program(1);
275 }
276
277 static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost)
278 {
279 AVFormatContext *s = of->ctx;
280 AVStream *st = ost->st;
281 int ret;
282
283 if (!of->header_written) {
284 AVPacket tmp_pkt;
285 /* the muxer is not initialized yet, buffer the packet */
286 if (!av_fifo_space(ost->muxing_queue)) {
287 int new_size = FFMIN(2 * av_fifo_size(ost->muxing_queue),
288 ost->max_muxing_queue_size);
289 if (new_size <= av_fifo_size(ost->muxing_queue)) {
290 av_log(NULL, AV_LOG_ERROR,
291 "Too many packets buffered for output stream %d:%d.\n",
292 ost->file_index, ost->st->index);
293 exit_program(1);
294 }
295 ret = av_fifo_realloc2(ost->muxing_queue, new_size);
296 if (ret < 0)
297 exit_program(1);
298 }
299 av_packet_move_ref(&tmp_pkt, pkt);
300 av_fifo_generic_write(ost->muxing_queue, &tmp_pkt, sizeof(tmp_pkt), NULL);
301 return;
302 }
303
304 /*
305 * Audio encoders may split the packets -- #frames in != #packets out.
306 * But there is no reordering, so we can limit the number of output packets
307 * by simply dropping them here.
308 * Counting encoded video frames needs to be done separately because of
309 * reordering, see do_video_out()
310 */
311 if (!(st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && ost->encoding_needed)) {
312 if (ost->frame_number >= ost->max_frames) {
313 av_packet_unref(pkt);
314 return;
315 }
316 ost->frame_number++;
317 }
318 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
319 uint8_t *sd = av_packet_get_side_data(pkt, AV_PKT_DATA_QUALITY_FACTOR,
320 NULL);
321 ost->quality = sd ? *(int *)sd : -1;
322
323 if (ost->frame_rate.num) {
324 pkt->duration = av_rescale_q(1, av_inv_q(ost->frame_rate),
325 ost->mux_timebase);
326 }
327 }
328
329 if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS) &&
330 ost->last_mux_dts != AV_NOPTS_VALUE &&
331 pkt->dts < ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT)) {
332 av_log(NULL, AV_LOG_WARNING, "Non-monotonous DTS in output stream "
333 "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
334 ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
335 if (exit_on_error) {
336 av_log(NULL, AV_LOG_FATAL, "aborting.\n");
337 exit_program(1);
338 }
339 av_log(NULL, AV_LOG_WARNING, "changing to %"PRId64". This may result "
340 "in incorrect timestamps in the output file.\n",
341 ost->last_mux_dts + 1);
342 pkt->dts = ost->last_mux_dts + 1;
343 if (pkt->pts != AV_NOPTS_VALUE)
344 pkt->pts = FFMAX(pkt->pts, pkt->dts);
345 }
346 ost->last_mux_dts = pkt->dts;
347
348 ost->data_size += pkt->size;
349 ost->packets_written++;
350
351 pkt->stream_index = ost->index;
352 av_packet_rescale_ts(pkt, ost->mux_timebase, ost->st->time_base);
353
354 ret = av_interleaved_write_frame(s, pkt);
355 if (ret < 0) {
356 print_error("av_interleaved_write_frame()", ret);
357 exit_program(1);
358 }
359 }
360
361 static void output_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost)
362 {
363 int ret = 0;
364
365 /* apply the output bitstream filters, if any */
366 if (ost->nb_bitstream_filters) {
367 int idx;
368
369 ret = av_bsf_send_packet(ost->bsf_ctx[0], pkt);
370 if (ret < 0)
371 goto finish;
372
373 idx = 1;
374 while (idx) {
375 /* get a packet from the previous filter up the chain */
376 ret = av_bsf_receive_packet(ost->bsf_ctx[idx - 1], pkt);
377 if (ret == AVERROR(EAGAIN)) {
378 ret = 0;
379 idx--;
380 continue;
381 } else if (ret < 0)
382 goto finish;
383
384 /* send it to the next filter down the chain or to the muxer */
385 if (idx < ost->nb_bitstream_filters) {
386 ret = av_bsf_send_packet(ost->bsf_ctx[idx], pkt);
387 if (ret < 0)
388 goto finish;
389 idx++;
390 } else
391 write_packet(of, pkt, ost);
392 }
393 } else
394 write_packet(of, pkt, ost);
395
396 finish:
397 if (ret < 0 && ret != AVERROR_EOF) {
398 av_log(NULL, AV_LOG_FATAL, "Error applying bitstream filters to an output "
399 "packet for stream #%d:%d.\n", ost->file_index, ost->index);
400 exit_program(1);
401 }
402 }
403
404 static int check_recording_time(OutputStream *ost)
405 {
406 OutputFile *of = output_files[ost->file_index];
407
408 if (of->recording_time != INT64_MAX &&
409 av_compare_ts(ost->sync_opts - ost->first_pts, ost->enc_ctx->time_base, of->recording_time,
410 AV_TIME_BASE_Q) >= 0) {
411 ost->finished = 1;
412 return 0;
413 }
414 return 1;
415 }
416
417 static void do_audio_out(OutputFile *of, OutputStream *ost,
418 AVFrame *frame)
419 {
420 AVCodecContext *enc = ost->enc_ctx;
421 AVPacket pkt;
422 int ret;
423
424 av_init_packet(&pkt);
425 pkt.data = NULL;
426 pkt.size = 0;
427
428 if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
429 frame->pts = ost->sync_opts;
430 ost->sync_opts = frame->pts + frame->nb_samples;
431
432 ost->samples_encoded += frame->nb_samples;
433 ost->frames_encoded++;
434
435 ret = avcodec_send_frame(enc, frame);
436 if (ret < 0)
437 goto error;
438
439 while (1) {
440 ret = avcodec_receive_packet(enc, &pkt);
441 if (ret == AVERROR(EAGAIN))
442 break;
443 if (ret < 0)
444 goto error;
445
446 output_packet(of, &pkt, ost);
447 }
448
449 return;
450 error:
451 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
452 exit_program(1);
453 }
454
455 static void do_subtitle_out(OutputFile *of,
456 OutputStream *ost,
457 InputStream *ist,
458 AVSubtitle *sub,
459 int64_t pts)
460 {
461 static uint8_t *subtitle_out = NULL;
462 int subtitle_out_max_size = 1024 * 1024;
463 int subtitle_out_size, nb, i;
464 AVCodecContext *enc;
465 AVPacket pkt;
466
467 if (pts == AV_NOPTS_VALUE) {
468 av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
469 if (exit_on_error)
470 exit_program(1);
471 return;
472 }
473
474 enc = ost->enc_ctx;
475
476 if (!subtitle_out) {
477 subtitle_out = av_malloc(subtitle_out_max_size);
478 }
479
480 /* Note: DVB subtitle need one packet to draw them and one other
481 packet to clear them */
482 /* XXX: signal it in the codec context ? */
483 if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
484 nb = 2;
485 else
486 nb = 1;
487
488 for (i = 0; i < nb; i++) {
489 ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
490 if (!check_recording_time(ost))
491 return;
492
493 sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
494 // start_display_time is required to be 0
495 sub->pts += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
496 sub->end_display_time -= sub->start_display_time;
497 sub->start_display_time = 0;
498
499 ost->frames_encoded++;
500
501 subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
502 subtitle_out_max_size, sub);
503 if (subtitle_out_size < 0) {
504 av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
505 exit_program(1);
506 }
507
508 av_init_packet(&pkt);
509 pkt.data = subtitle_out;
510 pkt.size = subtitle_out_size;
511 pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->mux_timebase);
512 if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
513 /* XXX: the pts correction is handled here. Maybe handling
514 it in the codec would be better */
515 if (i == 0)
516 pkt.pts += 90 * sub->start_display_time;
517 else
518 pkt.pts += 90 * sub->end_display_time;
519 }
520 output_packet(of, &pkt, ost);
521 }
522 }
523
524 static void do_video_out(OutputFile *of,
525 OutputStream *ost,
526 AVFrame *in_picture,
527 int *frame_size)
528 {
529 int ret, format_video_sync;
530 AVPacket pkt;
531 AVCodecContext *enc = ost->enc_ctx;
532
533 *frame_size = 0;
534
535 format_video_sync = video_sync_method;
536 if (format_video_sync == VSYNC_AUTO)
537 format_video_sync = (of->ctx->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH :
538 (of->ctx->oformat->flags & AVFMT_VARIABLE_FPS) ? VSYNC_VFR : VSYNC_CFR;
539 if (format_video_sync != VSYNC_PASSTHROUGH &&
540 ost->frame_number &&
541 in_picture->pts != AV_NOPTS_VALUE &&
542 in_picture->pts < ost->sync_opts) {
543 nb_frames_drop++;
544 av_log(NULL, AV_LOG_WARNING,
545 "*** dropping frame %d from stream %d at ts %"PRId64"\n",
546 ost->frame_number, ost->st->index, in_picture->pts);
547 return;
548 }
549
550 if (in_picture->pts == AV_NOPTS_VALUE)
551 in_picture->pts = ost->sync_opts;
552 ost->sync_opts = in_picture->pts;
553
554
555 if (!ost->frame_number)
556 ost->first_pts = in_picture->pts;
557
558 av_init_packet(&pkt);
559 pkt.data = NULL;
560 pkt.size = 0;
561
562 if (ost->frame_number >= ost->max_frames)
563 return;
564
565 if (enc->flags & (AV_CODEC_FLAG_INTERLACED_DCT | AV_CODEC_FLAG_INTERLACED_ME) &&
566 ost->top_field_first >= 0)
567 in_picture->top_field_first = !!ost->top_field_first;
568
569 in_picture->quality = enc->global_quality;
570 in_picture->pict_type = 0;
571 if (ost->forced_kf_index < ost->forced_kf_count &&
572 in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
573 in_picture->pict_type = AV_PICTURE_TYPE_I;
574 ost->forced_kf_index++;
575 }
576
577 ost->frames_encoded++;
578
579 ret = avcodec_send_frame(enc, in_picture);
580 if (ret < 0)
581 goto error;
582
583 /*
584 * For video, there may be reordering, so we can't throw away frames on
585 * encoder flush, we need to limit them here, before they go into encoder.
586 */
587 ost->frame_number++;
588
589 while (1) {
590 ret = avcodec_receive_packet(enc, &pkt);
591 if (ret == AVERROR(EAGAIN))
592 break;
593 if (ret < 0)
594 goto error;
595
596 output_packet(of, &pkt, ost);
597 *frame_size = pkt.size;
598
599 /* if two pass, output log */
600 if (ost->logfile && enc->stats_out) {
601 fprintf(ost->logfile, "%s", enc->stats_out);
602 }
603
604 ost->sync_opts++;
605 }
606
607 return;
608 error:
609 av_assert0(ret != AVERROR(EAGAIN) && ret != AVERROR_EOF);
610 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
611 exit_program(1);
612 }
613
614 #if FF_API_CODED_FRAME && FF_API_ERROR_FRAME
615 static double psnr(double d)
616 {
617 return -10.0 * log(d) / log(10.0);
618 }
619 #endif
620
621 static void do_video_stats(OutputStream *ost, int frame_size)
622 {
623 AVCodecContext *enc;
624 int frame_number;
625 double ti1, bitrate, avg_bitrate;
626
627 /* this is executed just the first time do_video_stats is called */
628 if (!vstats_file) {
629 vstats_file = fopen(vstats_filename, "w");
630 if (!vstats_file) {
631 perror("fopen");
632 exit_program(1);
633 }
634 }
635
636 enc = ost->enc_ctx;
637 if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
638 frame_number = ost->frame_number;
639 fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number,
640 ost->quality / (float)FF_QP2LAMBDA);
641
642 #if FF_API_CODED_FRAME && FF_API_ERROR_FRAME
643 FF_DISABLE_DEPRECATION_WARNINGS
644 if (enc->flags & AV_CODEC_FLAG_PSNR)
645 fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
646 FF_ENABLE_DEPRECATION_WARNINGS
647 #endif
648
649 fprintf(vstats_file,"f_size= %6d ", frame_size);
650 /* compute pts value */
651 ti1 = ost->sync_opts * av_q2d(enc->time_base);
652 if (ti1 < 0.01)
653 ti1 = 0.01;
654
655 bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
656 avg_bitrate = (double)(ost->data_size * 8) / ti1 / 1000.0;
657 fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
658 (double)ost->data_size / 1024, ti1, bitrate, avg_bitrate);
659 #if FF_API_CODED_FRAME
660 FF_DISABLE_DEPRECATION_WARNINGS
661 fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
662 FF_ENABLE_DEPRECATION_WARNINGS
663 #endif
664 }
665 }
666
667 static int init_output_stream(OutputStream *ost, char *error, int error_len);
668
669 /*
670 * Read one frame for lavfi output for ost and encode it.
671 */
672 static int poll_filter(OutputStream *ost)
673 {
674 OutputFile *of = output_files[ost->file_index];
675 AVFrame *filtered_frame = NULL;
676 int frame_size, ret;
677
678 if (!ost->filtered_frame && !(ost->filtered_frame = av_frame_alloc())) {
679 return AVERROR(ENOMEM);
680 }
681 filtered_frame = ost->filtered_frame;
682
683 if (!ost->initialized) {
684 char error[1024];
685 ret = init_output_stream(ost, error, sizeof(error));
686 if (ret < 0) {
687 av_log(NULL, AV_LOG_ERROR, "Error initializing output stream %d:%d -- %s\n",
688 ost->file_index, ost->index, error);
689 exit_program(1);
690 }
691 }
692
693 if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
694 !(ost->enc->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE))
695 ret = av_buffersink_get_samples(ost->filter->filter, filtered_frame,
696 ost->enc_ctx->frame_size);
697 else
698 ret = av_buffersink_get_frame(ost->filter->filter, filtered_frame);
699
700 if (ret < 0)
701 return ret;
702
703 if (filtered_frame->pts != AV_NOPTS_VALUE) {
704 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
705 filtered_frame->pts = av_rescale_q(filtered_frame->pts,
706 ost->filter->filter->inputs[0]->time_base,
707 ost->enc_ctx->time_base) -
708 av_rescale_q(start_time,
709 AV_TIME_BASE_Q,
710 ost->enc_ctx->time_base);
711 }
712
713 switch (ost->filter->filter->inputs[0]->type) {
714 case AVMEDIA_TYPE_VIDEO:
715 if (!ost->frame_aspect_ratio)
716 ost->enc_ctx->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
717
718 do_video_out(of, ost, filtered_frame, &frame_size);
719 if (vstats_filename && frame_size)
720 do_video_stats(ost, frame_size);
721 break;
722 case AVMEDIA_TYPE_AUDIO:
723 do_audio_out(of, ost, filtered_frame);
724 break;
725 default:
726 // TODO support subtitle filters
727 av_assert0(0);
728 }
729
730 av_frame_unref(filtered_frame);
731
732 return 0;
733 }
734
735 static void finish_output_stream(OutputStream *ost)
736 {
737 OutputFile *of = output_files[ost->file_index];
738 int i;
739
740 ost->finished = 1;
741
742 if (of->shortest) {
743 for (i = 0; i < of->ctx->nb_streams; i++)
744 output_streams[of->ost_index + i]->finished = 1;
745 }
746 }
747
748 /*
749 * Read as many frames from possible from lavfi and encode them.
750 *
751 * Always read from the active stream with the lowest timestamp. If no frames
752 * are available for it then return EAGAIN and wait for more input. This way we
753 * can use lavfi sources that generate unlimited amount of frames without memory
754 * usage exploding.
755 */
756 static int poll_filters(void)
757 {
758 int i, ret = 0;
759
760 while (ret >= 0 && !received_sigterm) {
761 OutputStream *ost = NULL;
762 int64_t min_pts = INT64_MAX;
763
764 /* choose output stream with the lowest timestamp */
765 for (i = 0; i < nb_output_streams; i++) {
766 int64_t pts = output_streams[i]->sync_opts;
767
768 if (output_streams[i]->filter && !output_streams[i]->filter->graph->graph &&
769 !output_streams[i]->filter->graph->nb_inputs) {
770 ret = configure_filtergraph(output_streams[i]->filter->graph);
771 if (ret < 0) {
772 av_log(NULL, AV_LOG_ERROR, "Error reinitializing filters!\n");
773 return ret;
774 }
775 }
776
777 if (!output_streams[i]->filter || output_streams[i]->finished ||
778 !output_streams[i]->filter->graph->graph)
779 continue;
780
781 pts = av_rescale_q(pts, output_streams[i]->enc_ctx->time_base,
782 AV_TIME_BASE_Q);
783 if (pts < min_pts) {
784 min_pts = pts;
785 ost = output_streams[i];
786 }
787 }
788
789 if (!ost)
790 break;
791
792 ret = poll_filter(ost);
793
794 if (ret == AVERROR_EOF) {
795 finish_output_stream(ost);
796 ret = 0;
797 } else if (ret == AVERROR(EAGAIN))
798 return 0;
799 }
800
801 return ret;
802 }
803
804 static void print_final_stats(int64_t total_size)
805 {
806 uint64_t video_size = 0, audio_size = 0, extra_size = 0, other_size = 0;
807 uint64_t data_size = 0;
808 float percent = -1.0;
809 int i, j;
810
811 for (i = 0; i < nb_output_streams; i++) {
812 OutputStream *ost = output_streams[i];
813 switch (ost->enc_ctx->codec_type) {
814 case AVMEDIA_TYPE_VIDEO: video_size += ost->data_size; break;
815 case AVMEDIA_TYPE_AUDIO: audio_size += ost->data_size; break;
816 default: other_size += ost->data_size; break;
817 }
818 extra_size += ost->enc_ctx->extradata_size;
819 data_size += ost->data_size;
820 }
821
822 if (data_size && total_size >= data_size)
823 percent = 100.0 * (total_size - data_size) / data_size;
824
825 av_log(NULL, AV_LOG_INFO, "\n");
826 av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB other streams:%1.0fkB global headers:%1.0fkB muxing overhead: ",
827 video_size / 1024.0,
828 audio_size / 1024.0,
829 other_size / 1024.0,
830 extra_size / 1024.0);
831 if (percent >= 0.0)
832 av_log(NULL, AV_LOG_INFO, "%f%%", percent);
833 else
834 av_log(NULL, AV_LOG_INFO, "unknown");
835 av_log(NULL, AV_LOG_INFO, "\n");
836
837 /* print verbose per-stream stats */
838 for (i = 0; i < nb_input_files; i++) {
839 InputFile *f = input_files[i];
840 uint64_t total_packets = 0, total_size = 0;
841
842 av_log(NULL, AV_LOG_VERBOSE, "Input file #%d (%s):\n",
843 i, f->ctx->filename);
844
845 for (j = 0; j < f->nb_streams; j++) {
846 InputStream *ist = input_streams[f->ist_index + j];
847 enum AVMediaType type = ist->dec_ctx->codec_type;
848
849 total_size += ist->data_size;
850 total_packets += ist->nb_packets;
851
852 av_log(NULL, AV_LOG_VERBOSE, " Input stream #%d:%d (%s): ",
853 i, j, media_type_string(type));
854 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets read (%"PRIu64" bytes); ",
855 ist->nb_packets, ist->data_size);
856
857 if (ist->decoding_needed) {
858 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames decoded",
859 ist->frames_decoded);
860 if (type == AVMEDIA_TYPE_AUDIO)
861 av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ist->samples_decoded);
862 av_log(NULL, AV_LOG_VERBOSE, "; ");
863 }
864
865 av_log(NULL, AV_LOG_VERBOSE, "\n");
866 }
867
868 av_log(NULL, AV_LOG_VERBOSE, " Total: %"PRIu64" packets (%"PRIu64" bytes) demuxed\n",
869 total_packets, total_size);
870 }
871
872 for (i = 0; i < nb_output_files; i++) {
873 OutputFile *of = output_files[i];
874 uint64_t total_packets = 0, total_size = 0;
875
876 av_log(NULL, AV_LOG_VERBOSE, "Output file #%d (%s):\n",
877 i, of->ctx->filename);
878
879 for (j = 0; j < of->ctx->nb_streams; j++) {
880 OutputStream *ost = output_streams[of->ost_index + j];
881 enum AVMediaType type = ost->enc_ctx->codec_type;
882
883 total_size += ost->data_size;
884 total_packets += ost->packets_written;
885
886 av_log(NULL, AV_LOG_VERBOSE, " Output stream #%d:%d (%s): ",
887 i, j, media_type_string(type));
888 if (ost->encoding_needed) {
889 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames encoded",
890 ost->frames_encoded);
891 if (type == AVMEDIA_TYPE_AUDIO)
892 av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ost->samples_encoded);
893 av_log(NULL, AV_LOG_VERBOSE, "; ");
894 }
895
896 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets muxed (%"PRIu64" bytes); ",
897 ost->packets_written, ost->data_size);
898
899 av_log(NULL, AV_LOG_VERBOSE, "\n");
900 }
901
902 av_log(NULL, AV_LOG_VERBOSE, " Total: %"PRIu64" packets (%"PRIu64" bytes) muxed\n",
903 total_packets, total_size);
904 }
905 }
906
907 static void print_report(int is_last_report, int64_t timer_start)
908 {
909 char buf[1024];
910 OutputStream *ost;
911 AVFormatContext *oc;
912 int64_t total_size;
913 AVCodecContext *enc;
914 int frame_number, vid, i;
915 double bitrate, ti1, pts;
916 static int64_t last_time = -1;
917 static int qp_histogram[52];
918
919 if (!print_stats && !is_last_report)
920 return;
921
922 if (!is_last_report) {
923 int64_t cur_time;
924 /* display the report every 0.5 seconds */
925 cur_time = av_gettime_relative();
926 if (last_time == -1) {
927 last_time = cur_time;
928 return;
929 }
930 if ((cur_time - last_time) < 500000)
931 return;
932 last_time = cur_time;
933 }
934
935
936 oc = output_files[0]->ctx;
937
938 total_size = avio_size(oc->pb);
939 if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
940 total_size = avio_tell(oc->pb);
941 if (total_size < 0) {
942 char errbuf[128];
943 av_strerror(total_size, errbuf, sizeof(errbuf));
944 av_log(NULL, AV_LOG_VERBOSE, "Bitrate not available, "
945 "avio_tell() failed: %s\n", errbuf);
946 total_size = 0;
947 }
948
949 buf[0] = '\0';
950 ti1 = 1e10;
951 vid = 0;
952 for (i = 0; i < nb_output_streams; i++) {
953 float q = -1;
954 ost = output_streams[i];
955 enc = ost->enc_ctx;
956 if (!ost->stream_copy)
957 q = ost->quality / (float) FF_QP2LAMBDA;
958
959 if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
960 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
961 }
962 if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
963 float t = (av_gettime_relative() - timer_start) / 1000000.0;
964
965 frame_number = ost->frame_number;
966 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
967 frame_number, (t > 1) ? (int)(frame_number / t + 0.5) : 0, q);
968 if (is_last_report)
969 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
970 if (qp_hist) {
971 int j;
972 int qp = lrintf(q);
973 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
974 qp_histogram[qp]++;
975 for (j = 0; j < 32; j++)
976 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
977 }
978
979 #if FF_API_CODED_FRAME && FF_API_ERROR_FRAME
980 FF_DISABLE_DEPRECATION_WARNINGS
981 if (enc->flags & AV_CODEC_FLAG_PSNR) {
982 int j;
983 double error, error_sum = 0;
984 double scale, scale_sum = 0;
985 char type[3] = { 'Y','U','V' };
986 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
987 for (j = 0; j < 3; j++) {
988 if (is_last_report) {
989 error = enc->error[j];
990 scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
991 } else {
992 error = enc->coded_frame->error[j];
993 scale = enc->width * enc->height * 255.0 * 255.0;
994 }
995 if (j)
996 scale /= 4;
997 error_sum += error;
998 scale_sum += scale;
999 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
1000 }
1001 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1002 }
1003 FF_ENABLE_DEPRECATION_WARNINGS
1004 #endif
1005 vid = 1;
1006 }
1007 /* compute min output value */
1008 pts = (double)ost->last_mux_dts * av_q2d(ost->mux_timebase);
1009 if ((pts < ti1) && (pts > 0))
1010 ti1 = pts;
1011 }
1012 if (ti1 < 0.01)
1013 ti1 = 0.01;
1014
1015 bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1016
1017 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1018 "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1019 (double)total_size / 1024, ti1, bitrate);
1020
1021 if (nb_frames_drop)
1022 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " drop=%d",
1023 nb_frames_drop);
1024
1025 av_log(NULL, AV_LOG_INFO, "%s \r", buf);
1026
1027 fflush(stderr);
1028
1029 if (is_last_report)
1030 print_final_stats(total_size);
1031
1032 }
1033
1034 static void flush_encoders(void)
1035 {
1036 int i, ret;
1037
1038 for (i = 0; i < nb_output_streams; i++) {
1039 OutputStream *ost = output_streams[i];
1040 AVCodecContext *enc = ost->enc_ctx;
1041 OutputFile *of = output_files[ost->file_index];
1042 int stop_encoding = 0;
1043
1044 if (!ost->encoding_needed)
1045 continue;
1046
1047 if (enc->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1048 continue;
1049
1050 if (enc->codec_type != AVMEDIA_TYPE_VIDEO && enc->codec_type != AVMEDIA_TYPE_AUDIO)
1051 continue;
1052
1053 avcodec_send_frame(enc, NULL);
1054
1055 for (;;) {
1056 const char *desc = NULL;
1057
1058 switch (enc->codec_type) {
1059 case AVMEDIA_TYPE_AUDIO:
1060 desc = "Audio";
1061 break;
1062 case AVMEDIA_TYPE_VIDEO:
1063 desc = "Video";
1064 break;
1065 default:
1066 av_assert0(0);
1067 }
1068
1069 if (1) {
1070 AVPacket pkt;
1071 av_init_packet(&pkt);
1072 pkt.data = NULL;
1073 pkt.size = 0;
1074
1075 ret = avcodec_receive_packet(enc, &pkt);
1076 if (ret < 0 && ret != AVERROR_EOF) {
1077 av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1078 exit_program(1);
1079 }
1080 if (ost->logfile && enc->stats_out) {
1081 fprintf(ost->logfile, "%s", enc->stats_out);
1082 }
1083 if (ret == AVERROR_EOF) {
1084 stop_encoding = 1;
1085 break;
1086 }
1087 output_packet(of, &pkt, ost);
1088 }
1089
1090 if (stop_encoding)
1091 break;
1092 }
1093 }
1094 }
1095
1096 /*
1097 * Check whether a packet from ist should be written into ost at this time
1098 */
1099 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1100 {
1101 OutputFile *of = output_files[ost->file_index];
1102 int ist_index = input_files[ist->file_index]->ist_index + ist->st->index;
1103
1104 if (ost->source_index != ist_index)
1105 return 0;
1106
1107 if (of->start_time != AV_NOPTS_VALUE && ist->last_dts < of->start_time)
1108 return 0;
1109
1110 return 1;
1111 }
1112
1113 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1114 {
1115 OutputFile *of = output_files[ost->file_index];
1116 InputFile *f = input_files [ist->file_index];
1117 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1118 int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->mux_timebase);
1119 AVPacket opkt;
1120
1121 av_init_packet(&opkt);
1122
1123 if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1124 !ost->copy_initial_nonkeyframes)
1125 return;
1126
1127 if (of->recording_time != INT64_MAX &&
1128 ist->last_dts >= of->recording_time + start_time) {
1129 ost->finished = 1;
1130 return;
1131 }
1132
1133 if (f->recording_time != INT64_MAX) {
1134 start_time = f->ctx->start_time;
1135 if (f->start_time != AV_NOPTS_VALUE)
1136 start_time += f->start_time;
1137 if (ist->last_dts >= f->recording_time + start_time) {
1138 ost->finished = 1;
1139 return;
1140 }
1141 }
1142
1143 /* force the input stream PTS */
1144 if (ost->enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO)
1145 ost->sync_opts++;
1146
1147 if (pkt->pts != AV_NOPTS_VALUE)
1148 opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->mux_timebase) - ost_tb_start_time;
1149 else
1150 opkt.pts = AV_NOPTS_VALUE;
1151
1152 if (pkt->dts == AV_NOPTS_VALUE)
1153 opkt.dts = av_rescale_q(ist->last_dts, AV_TIME_BASE_Q, ost->mux_timebase);
1154 else
1155 opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->mux_timebase);
1156 opkt.dts -= ost_tb_start_time;
1157
1158 opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->mux_timebase);
1159 opkt.flags = pkt->flags;
1160
1161 // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1162 if ( ost->enc_ctx->codec_id != AV_CODEC_ID_H264
1163 && ost->enc_ctx->codec_id != AV_CODEC_ID_MPEG1VIDEO
1164 && ost->enc_ctx->codec_id != AV_CODEC_ID_MPEG2VIDEO
1165 && ost->enc_ctx->codec_id != AV_CODEC_ID_VC1
1166 ) {
1167 if (av_parser_change(ost->parser, ost->parser_avctx,
1168 &opkt.data, &opkt.size,
1169 pkt->data, pkt->size,
1170 pkt->flags & AV_PKT_FLAG_KEY)) {
1171 opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1172 if (!opkt.buf)
1173 exit_program(1);
1174 }
1175 } else {
1176 opkt.data = pkt->data;
1177 opkt.size = pkt->size;
1178 }
1179
1180 output_packet(of, &opkt, ost);
1181 }
1182
1183 static int ifilter_send_frame(InputFilter *ifilter, AVFrame *frame)
1184 {
1185 FilterGraph *fg = ifilter->graph;
1186 int need_reinit, ret, i;
1187
1188 /* determine if the parameters for this input changed */
1189 need_reinit = ifilter->format != frame->format;
1190 if (!!ifilter->hw_frames_ctx != !!frame->hw_frames_ctx ||
1191 (ifilter->hw_frames_ctx && ifilter->hw_frames_ctx->data != frame->hw_frames_ctx->data))
1192 need_reinit = 1;
1193
1194 switch (ifilter->ist->st->codecpar->codec_type) {
1195 case AVMEDIA_TYPE_AUDIO:
1196 need_reinit |= ifilter->sample_rate != frame->sample_rate ||
1197 ifilter->channel_layout != frame->channel_layout;
1198 break;
1199 case AVMEDIA_TYPE_VIDEO:
1200 need_reinit |= ifilter->width != frame->width ||
1201 ifilter->height != frame->height;
1202 break;
1203 }
1204
1205 if (need_reinit) {
1206 ret = ifilter_parameters_from_frame(ifilter, frame);
1207 if (ret < 0)
1208 return ret;
1209 }
1210
1211 /* (re)init the graph if possible, otherwise buffer the frame and return */
1212 if (need_reinit || !fg->graph) {
1213 for (i = 0; i < fg->nb_inputs; i++) {
1214 if (fg->inputs[i]->format < 0) {
1215 AVFrame *tmp = av_frame_clone(frame);
1216 if (!tmp)
1217 return AVERROR(ENOMEM);
1218 av_frame_unref(frame);
1219
1220 if (!av_fifo_space(ifilter->frame_queue)) {
1221 ret = av_fifo_realloc2(ifilter->frame_queue, 2 * av_fifo_size(ifilter->frame_queue));
1222 if (ret < 0)
1223 return ret;
1224 }
1225 av_fifo_generic_write(ifilter->frame_queue, &tmp, sizeof(tmp), NULL);
1226 return 0;
1227 }
1228 }
1229
1230 ret = poll_filters();
1231 if (ret < 0 && ret != AVERROR_EOF) {
1232 char errbuf[128];
1233 av_strerror(ret, errbuf, sizeof(errbuf));
1234
1235 av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n", errbuf);
1236 return ret;
1237 }
1238
1239 ret = configure_filtergraph(fg);
1240 if (ret < 0) {
1241 av_log(NULL, AV_LOG_ERROR, "Error reinitializing filters!\n");
1242 return ret;
1243 }
1244 }
1245
1246 ret = av_buffersrc_add_frame(ifilter->filter, frame);
1247 if (ret < 0) {
1248 av_log(NULL, AV_LOG_ERROR, "Error while filtering\n");
1249 return ret;
1250 }
1251
1252 return 0;
1253 }
1254
1255 static int ifilter_send_eof(InputFilter *ifilter)
1256 {
1257 int i, j, ret;
1258
1259 ifilter->eof = 1;
1260
1261 if (ifilter->filter) {
1262 ret = av_buffersrc_add_frame(ifilter->filter, NULL);
1263 if (ret < 0)
1264 return ret;
1265 } else {
1266 // the filtergraph was never configured
1267 FilterGraph *fg = ifilter->graph;
1268 for (i = 0; i < fg->nb_inputs; i++)
1269 if (!fg->inputs[i]->eof)
1270 break;
1271 if (i == fg->nb_inputs) {
1272 // All the input streams have finished without the filtergraph
1273 // ever being configured.
1274 // Mark the output streams as finished.
1275 for (j = 0; j < fg->nb_outputs; j++)
1276 finish_output_stream(fg->outputs[j]->ost);
1277 }
1278 }
1279
1280 return 0;
1281 }
1282
1283 // This does not quite work like avcodec_decode_audio4/avcodec_decode_video2.
1284 // There is the following difference: if you got a frame, you must call
1285 // it again with pkt=NULL. pkt==NULL is treated differently from pkt.size==0
1286 // (pkt==NULL means get more output, pkt.size==0 is a flush/drain packet)
1287 static int decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *pkt)
1288 {
1289 int ret;
1290
1291 *got_frame = 0;
1292
1293 if (pkt) {
1294 ret = avcodec_send_packet(avctx, pkt);
1295 // In particular, we don't expect AVERROR(EAGAIN), because we read all
1296 // decoded frames with avcodec_receive_frame() until done.
1297 if (ret < 0)
1298 return ret == AVERROR_EOF ? 0 : ret;
1299 }
1300
1301 ret = avcodec_receive_frame(avctx, frame);
1302 if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
1303 return ret;
1304 if (ret >= 0)
1305 *got_frame = 1;
1306
1307 return 0;
1308 }
1309
1310 int guess_input_channel_layout(InputStream *ist)
1311 {
1312 AVCodecContext *dec = ist->dec_ctx;
1313
1314 if (!dec->channel_layout) {
1315 char layout_name[256];
1316
1317 dec->channel_layout = av_get_default_channel_layout(dec->channels);
1318 if (!dec->channel_layout)
1319 return 0;
1320 av_get_channel_layout_string(layout_name, sizeof(layout_name),
1321 dec->channels, dec->channel_layout);
1322 av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for Input Stream "
1323 "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1324 }
1325 return 1;
1326 }
1327
1328 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output,
1329 int *decode_failed)
1330 {
1331 AVFrame *decoded_frame, *f;
1332 AVCodecContext *avctx = ist->dec_ctx;
1333 int i, ret, err = 0;
1334
1335 if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1336 return AVERROR(ENOMEM);
1337 if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1338 return AVERROR(ENOMEM);
1339 decoded_frame = ist->decoded_frame;
1340
1341 ret = decode(avctx, decoded_frame, got_output, pkt);
1342 if (ret < 0)
1343 *decode_failed = 1;
1344 if (!*got_output || ret < 0)
1345 return ret;
1346
1347 ist->samples_decoded += decoded_frame->nb_samples;
1348 ist->frames_decoded++;
1349
1350 /* if the decoder provides a pts, use it instead of the last packet pts.
1351 the decoder could be delaying output by a packet or more. */
1352 if (decoded_frame->pts != AV_NOPTS_VALUE)
1353 ist->next_dts = decoded_frame->pts;
1354 else if (pkt && pkt->pts != AV_NOPTS_VALUE) {
1355 decoded_frame->pts = pkt->pts;
1356 }
1357
1358 if (decoded_frame->pts != AV_NOPTS_VALUE)
1359 decoded_frame->pts = av_rescale_q(decoded_frame->pts,
1360 ist->st->time_base,
1361 (AVRational){1, avctx->sample_rate});
1362 ist->nb_samples = decoded_frame->nb_samples;
1363 for (i = 0; i < ist->nb_filters; i++) {
1364 if (i < ist->nb_filters - 1) {
1365 f = ist->filter_frame;
1366 err = av_frame_ref(f, decoded_frame);
1367 if (err < 0)
1368 break;
1369 } else
1370 f = decoded_frame;
1371
1372 err = ifilter_send_frame(ist->filters[i], f);
1373 if (err < 0)
1374 break;
1375 }
1376
1377 av_frame_unref(ist->filter_frame);
1378 av_frame_unref(decoded_frame);
1379 return err < 0 ? err : ret;
1380 }
1381
1382 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output,
1383 int *decode_failed)
1384 {
1385 AVFrame *decoded_frame, *f;
1386 int i, ret = 0, err = 0;
1387
1388 if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1389 return AVERROR(ENOMEM);
1390 if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1391 return AVERROR(ENOMEM);
1392 decoded_frame = ist->decoded_frame;
1393
1394 ret = decode(ist->dec_ctx, decoded_frame, got_output, pkt);
1395 if (ret < 0)
1396 *decode_failed = 1;
1397 if (!*got_output || ret < 0)
1398 return ret;
1399
1400 ist->frames_decoded++;
1401
1402 if (ist->hwaccel_retrieve_data && decoded_frame->format == ist->hwaccel_pix_fmt) {
1403 err = ist->hwaccel_retrieve_data(ist->dec_ctx, decoded_frame);
1404 if (err < 0)
1405 goto fail;
1406 }
1407 ist->hwaccel_retrieved_pix_fmt = decoded_frame->format;
1408
1409 decoded_frame->pts = guess_correct_pts(&ist->pts_ctx, decoded_frame->pts,
1410 decoded_frame->pkt_dts);
1411 if (ist->framerate.num)
1412 decoded_frame->pts = ist->cfr_next_pts++;
1413
1414 if (ist->st->sample_aspect_ratio.num)
1415 decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1416
1417 for (i = 0; i < ist->nb_filters; i++) {
1418 if (i < ist->nb_filters - 1) {
1419 f = ist->filter_frame;
1420 err = av_frame_ref(f, decoded_frame);
1421 if (err < 0)
1422 break;
1423 } else
1424 f = decoded_frame;
1425
1426 err = ifilter_send_frame(ist->filters[i], f);
1427 if (err < 0)
1428 break;
1429 }
1430
1431 fail:
1432 av_frame_unref(ist->filter_frame);
1433 av_frame_unref(decoded_frame);
1434 return err < 0 ? err : ret;
1435 }
1436
1437 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output,
1438 int *decode_failed)
1439 {
1440 AVSubtitle subtitle;
1441 int i, ret = avcodec_decode_subtitle2(ist->dec_ctx,
1442 &subtitle, got_output, pkt);
1443 if (ret < 0) {
1444 *decode_failed = 1;
1445 return ret;
1446 }
1447 if (!*got_output)
1448 return ret;
1449
1450 ist->frames_decoded++;
1451
1452 for (i = 0; i < nb_output_streams; i++) {
1453 OutputStream *ost = output_streams[i];
1454
1455 if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1456 continue;
1457
1458 do_subtitle_out(output_files[ost->file_index], ost, ist, &subtitle, pkt->pts);
1459 }
1460
1461 avsubtitle_free(&subtitle);
1462 return ret;
1463 }
1464
1465 static int send_filter_eof(InputStream *ist)
1466 {
1467 int i, ret;
1468 for (i = 0; i < ist->nb_filters; i++) {
1469 ret = ifilter_send_eof(ist->filters[i]);
1470 if (ret < 0)
1471 return ret;
1472 }
1473 return 0;
1474 }
1475
1476 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1477 static void process_input_packet(InputStream *ist, const AVPacket *pkt, int no_eof)
1478 {
1479 int i;
1480 int repeating = 0;
1481 AVPacket avpkt;
1482
1483 if (ist->next_dts == AV_NOPTS_VALUE)
1484 ist->next_dts = ist->last_dts;
1485
1486 if (!pkt) {
1487 /* EOF handling */
1488 av_init_packet(&avpkt);
1489 avpkt.data = NULL;
1490 avpkt.size = 0;
1491 } else {
1492 avpkt = *pkt;
1493 }
1494
1495 if (pkt && pkt->dts != AV_NOPTS_VALUE)
1496 ist->next_dts = ist->last_dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1497
1498 // while we have more to decode or while the decoder did output something on EOF
1499 while (ist->decoding_needed && (!pkt || avpkt.size > 0)) {
1500 int ret = 0;
1501 int got_output = 0;
1502 int decode_failed = 0;
1503
1504 if (!repeating)
1505 ist->last_dts = ist->next_dts;
1506
1507 switch (ist->dec_ctx->codec_type) {
1508 case AVMEDIA_TYPE_AUDIO:
1509 ret = decode_audio (ist, repeating ? NULL : &avpkt, &got_output,
1510 &decode_failed);
1511 break;
1512 case AVMEDIA_TYPE_VIDEO:
1513 ret = decode_video (ist, repeating ? NULL : &avpkt, &got_output,
1514 &decode_failed);
1515 if (repeating && !got_output)
1516 ;
1517 else if (pkt && pkt->duration)
1518 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1519 else if (ist->st->avg_frame_rate.num)
1520 ist->next_dts += av_rescale_q(1, av_inv_q(ist->st->avg_frame_rate),
1521 AV_TIME_BASE_Q);
1522 else if (ist->dec_ctx->framerate.num != 0) {
1523 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 :
1524 ist->dec_ctx->ticks_per_frame;
1525 ist->next_dts += av_rescale_q(ticks, ist->dec_ctx->framerate, AV_TIME_BASE_Q);
1526 }
1527 break;
1528 case AVMEDIA_TYPE_SUBTITLE:
1529 if (repeating)
1530 break;
1531 ret = transcode_subtitles(ist, &avpkt, &got_output, &decode_failed);
1532 break;
1533 default:
1534 return;
1535 }
1536
1537 if (ret < 0) {
1538 if (decode_failed) {
1539 av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
1540 ist->file_index, ist->st->index);
1541 } else {
1542 av_log(NULL, AV_LOG_FATAL, "Error while processing the decoded "
1543 "data for stream #%d:%d\n", ist->file_index, ist->st->index);
1544 }
1545 if (!decode_failed || exit_on_error)
1546 exit_program(1);
1547 break;
1548 }
1549
1550 if (!got_output)
1551 break;
1552
1553 repeating = 1;
1554 }
1555
1556 /* after flushing, send an EOF on all the filter inputs attached to the stream */
1557 /* except when looping we need to flush but not to send an EOF */
1558 if (!pkt && ist->decoding_needed && !no_eof) {
1559 int ret = send_filter_eof(ist);
1560 if (ret < 0) {
1561 av_log(NULL, AV_LOG_FATAL, "Error marking filters as finished\n");
1562 exit_program(1);
1563 }
1564 }
1565
1566 /* handle stream copy */
1567 if (!ist->decoding_needed) {
1568 ist->last_dts = ist->next_dts;
1569 switch (ist->dec_ctx->codec_type) {
1570 case AVMEDIA_TYPE_AUDIO:
1571 ist->next_dts += ((int64_t)AV_TIME_BASE * ist->dec_ctx->frame_size) /
1572 ist->dec_ctx->sample_rate;
1573 break;
1574 case AVMEDIA_TYPE_VIDEO:
1575 if (ist->dec_ctx->framerate.num != 0) {
1576 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->dec_ctx->ticks_per_frame;
1577 ist->next_dts += ((int64_t)AV_TIME_BASE *
1578 ist->dec_ctx->framerate.den * ticks) /
1579 ist->dec_ctx->framerate.num;
1580 }
1581 break;
1582 }
1583 }
1584 for (i = 0; pkt && i < nb_output_streams; i++) {
1585 OutputStream *ost = output_streams[i];
1586
1587 if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1588 continue;
1589
1590 do_streamcopy(ist, ost, pkt);
1591 }
1592
1593 return;
1594 }
1595
1596 static void print_sdp(void)
1597 {
1598 char sdp[16384];
1599 int i;
1600 AVFormatContext **avc;
1601
1602 for (i = 0; i < nb_output_files; i++) {
1603 if (!output_files[i]->header_written)
1604 return;
1605 }
1606
1607 avc = av_malloc(sizeof(*avc) * nb_output_files);
1608 if (!avc)
1609 exit_program(1);
1610 for (i = 0; i < nb_output_files; i++)
1611 avc[i] = output_files[i]->ctx;
1612
1613 av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1614 printf("SDP:\n%s\n", sdp);
1615 fflush(stdout);
1616 av_freep(&avc);
1617 }
1618
1619 static const HWAccel *get_hwaccel(enum AVPixelFormat pix_fmt)
1620 {
1621 int i;
1622 for (i = 0; hwaccels[i].name; i++)
1623 if (hwaccels[i].pix_fmt == pix_fmt)
1624 return &hwaccels[i];
1625 return NULL;
1626 }
1627
1628 static enum AVPixelFormat get_format(AVCodecContext *s, const enum AVPixelFormat *pix_fmts)
1629 {
1630 InputStream *ist = s->opaque;
1631 const enum AVPixelFormat *p;
1632 int ret;
1633
1634 for (p = pix_fmts; *p != -1; p++) {
1635 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(*p);
1636 const HWAccel *hwaccel;
1637
1638 if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
1639 break;
1640
1641 hwaccel = get_hwaccel(*p);
1642 if (!hwaccel ||
1643 (ist->active_hwaccel_id && ist->active_hwaccel_id != hwaccel->id) ||
1644 (ist->hwaccel_id != HWACCEL_AUTO && ist->hwaccel_id != hwaccel->id))
1645 continue;
1646
1647 ret = hwaccel->init(s);
1648 if (ret < 0) {
1649 if (ist->hwaccel_id == hwaccel->id) {
1650 av_log(NULL, AV_LOG_FATAL,
1651 "%s hwaccel requested for input stream #%d:%d, "
1652 "but cannot be initialized.\n", hwaccel->name,
1653 ist->file_index, ist->st->index);
1654 return AV_PIX_FMT_NONE;
1655 }
1656 continue;
1657 }
1658
1659 if (ist->hw_frames_ctx) {
1660 s->hw_frames_ctx = av_buffer_ref(ist->hw_frames_ctx);
1661 if (!s->hw_frames_ctx)
1662 return AV_PIX_FMT_NONE;
1663 }
1664
1665 ist->active_hwaccel_id = hwaccel->id;
1666 ist->hwaccel_pix_fmt = *p;
1667 break;
1668 }
1669
1670 return *p;
1671 }
1672
1673 static int get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
1674 {
1675 InputStream *ist = s->opaque;
1676
1677 if (ist->hwaccel_get_buffer && frame->format == ist->hwaccel_pix_fmt)
1678 return ist->hwaccel_get_buffer(s, frame, flags);
1679
1680 return avcodec_default_get_buffer2(s, frame, flags);
1681 }
1682
1683 static int init_input_stream(int ist_index, char *error, int error_len)
1684 {
1685 int ret;
1686 InputStream *ist = input_streams[ist_index];
1687
1688 if (ist->decoding_needed) {
1689 AVCodec *codec = ist->dec;
1690 if (!codec) {
1691 snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d:%d",
1692 ist->dec_ctx->codec_id, ist->file_index, ist->st->index);
1693 return AVERROR(EINVAL);
1694 }
1695
1696 ist->dec_ctx->opaque = ist;
1697 ist->dec_ctx->get_format = get_format;
1698 ist->dec_ctx->get_buffer2 = get_buffer;
1699 ist->dec_ctx->thread_safe_callbacks = 1;
1700
1701 av_opt_set_int(ist->dec_ctx, "refcounted_frames", 1, 0);
1702
1703 if (!av_dict_get(ist->decoder_opts, "threads", NULL, 0))
1704 av_dict_set(&ist->decoder_opts, "threads", "auto", 0);
1705 if ((ret = avcodec_open2(ist->dec_ctx, codec, &ist->decoder_opts)) < 0) {
1706 char errbuf[128];
1707 if (ret == AVERROR_EXPERIMENTAL)
1708 abort_codec_experimental(codec, 0);
1709
1710 av_strerror(ret, errbuf, sizeof(errbuf));
1711
1712 snprintf(error, error_len,
1713 "Error while opening decoder for input stream "
1714 "#%d:%d : %s",
1715 ist->file_index, ist->st->index, errbuf);
1716 return ret;
1717 }
1718 assert_avoptions(ist->decoder_opts);
1719 }
1720
1721 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;
1722 ist->next_dts = AV_NOPTS_VALUE;
1723 init_pts_correction(&ist->pts_ctx);
1724
1725 return 0;
1726 }
1727
1728 static InputStream *get_input_stream(OutputStream *ost)
1729 {
1730 if (ost->source_index >= 0)
1731 return input_streams[ost->source_index];
1732
1733 if (ost->filter) {
1734 FilterGraph *fg = ost->filter->graph;
1735 int i;
1736
1737 for (i = 0; i < fg->nb_inputs; i++)
1738 if (fg->inputs[i]->ist->dec_ctx->codec_type == ost->enc_ctx->codec_type)
1739 return fg->inputs[i]->ist;
1740 }
1741
1742 return NULL;
1743 }
1744
1745 /* open the muxer when all the streams are initialized */
1746 static int check_init_output_file(OutputFile *of, int file_index)
1747 {
1748 int ret, i;
1749
1750 for (i = 0; i < of->ctx->nb_streams; i++) {
1751 OutputStream *ost = output_streams[of->ost_index + i];
1752 if (!ost->initialized)
1753 return 0;
1754 }
1755
1756 of->ctx->interrupt_callback = int_cb;
1757
1758 ret = avformat_write_header(of->ctx, &of->opts);
1759 if (ret < 0) {
1760 char errbuf[128];
1761
1762 av_strerror(ret, errbuf, sizeof(errbuf));
1763
1764 av_log(NULL, AV_LOG_ERROR,
1765 "Could not write header for output file #%d "
1766 "(incorrect codec parameters ?): %s",
1767 file_index, errbuf);
1768 return ret;
1769 }
1770 assert_avoptions(of->opts);
1771 of->header_written = 1;
1772
1773 av_dump_format(of->ctx, file_index, of->ctx->filename, 1);
1774
1775 if (want_sdp)
1776 print_sdp();
1777
1778 /* flush the muxing queues */
1779 for (i = 0; i < of->ctx->nb_streams; i++) {
1780 OutputStream *ost = output_streams[of->ost_index + i];
1781
1782 while (av_fifo_size(ost->muxing_queue)) {
1783 AVPacket pkt;
1784 av_fifo_generic_read(ost->muxing_queue, &pkt, sizeof(pkt), NULL);
1785 write_packet(of, &pkt, ost);
1786 }
1787 }
1788
1789 return 0;
1790 }
1791
1792 static int init_output_bsfs(OutputStream *ost)
1793 {
1794 AVBSFContext *ctx;
1795 int i, ret;
1796
1797 if (!ost->nb_bitstream_filters)
1798 return 0;
1799
1800 for (i = 0; i < ost->nb_bitstream_filters; i++) {
1801 ctx = ost->bsf_ctx[i];
1802
1803 ret = avcodec_parameters_copy(ctx->par_in,
1804 i ? ost->bsf_ctx[i - 1]->par_out : ost->st->codecpar);
1805 if (ret < 0)
1806 return ret;
1807
1808 ctx->time_base_in = i ? ost->bsf_ctx[i - 1]->time_base_out : ost->st->time_base;
1809
1810 ret = av_bsf_init(ctx);
1811 if (ret < 0) {
1812 av_log(NULL, AV_LOG_ERROR, "Error initializing bitstream filter: %s\n",
1813 ctx->filter->name);
1814 return ret;
1815 }
1816 }
1817
1818 ret = avcodec_parameters_copy(ost->st->codecpar, ctx->par_out);
1819 if (ret < 0)
1820 return ret;
1821
1822 ost->st->time_base = ctx->time_base_out;
1823
1824 return 0;
1825 }
1826
1827 static int init_output_stream_streamcopy(OutputStream *ost)
1828 {
1829 OutputFile *of = output_files[ost->file_index];
1830 InputStream *ist = get_input_stream(ost);
1831 AVCodecParameters *par_dst = ost->st->codecpar;
1832 AVCodecParameters *par_src = ist->st->codecpar;
1833 AVRational sar;
1834 uint32_t codec_tag = par_dst->codec_tag;
1835 int i, ret;
1836
1837 if (!codec_tag) {
1838 if (!of->ctx->oformat->codec_tag ||
1839 av_codec_get_id (of->ctx->oformat->codec_tag, par_src->codec_tag) == par_src->codec_id ||
1840 av_codec_get_tag(of->ctx->oformat->codec_tag, par_src->codec_id) <= 0)
1841 codec_tag = par_src->codec_tag;
1842 }
1843
1844 ret = avcodec_parameters_copy(par_dst, par_src);
1845 if (ret < 0)
1846 return ret;
1847
1848 par_dst->codec_tag = codec_tag;
1849
1850 ost->st->disposition = ist->st->disposition;
1851
1852 ost->st->time_base = ist->st->time_base;
1853
1854 if (ist->st->nb_side_data) {
1855 ost->st->side_data = av_realloc_array(NULL, ist->st->nb_side_data,
1856 sizeof(*ist->st->side_data));
1857 if (!ost->st->side_data)
1858 return AVERROR(ENOMEM);
1859
1860 for (i = 0; i < ist->st->nb_side_data; i++) {
1861 const AVPacketSideData *sd_src = &ist->st->side_data[i];
1862 AVPacketSideData *sd_dst = &ost->st->side_data[i];
1863
1864 sd_dst->data = av_malloc(sd_src->size);
1865 if (!sd_dst->data)
1866 return AVERROR(ENOMEM);
1867 memcpy(sd_dst->data, sd_src->data, sd_src->size);
1868 sd_dst->size = sd_src->size;
1869 sd_dst->type = sd_src->type;
1870 ost->st->nb_side_data++;
1871 }
1872 }
1873
1874 ost->parser = av_parser_init(par_dst->codec_id);
1875 ost->parser_avctx = avcodec_alloc_context3(NULL);
1876 if (!ost->parser_avctx)
1877 return AVERROR(ENOMEM);
1878
1879 if (par_dst->codec_type == AVMEDIA_TYPE_VIDEO) {
1880 if (ost->frame_aspect_ratio)
1881 sar = av_d2q(ost->frame_aspect_ratio * par_dst->height / par_dst->width, 255);
1882 else if (ist->st->sample_aspect_ratio.num)
1883 sar = ist->st->sample_aspect_ratio;
1884 else
1885 sar = par_src->sample_aspect_ratio;
1886 ost->st->sample_aspect_ratio = par_dst->sample_aspect_ratio = sar;
1887 }
1888
1889 return 0;
1890 }
1891
1892 static void set_encoder_id(OutputFile *of, OutputStream *ost)
1893 {
1894 AVDictionaryEntry *e;
1895
1896 uint8_t *encoder_string;
1897 int encoder_string_len;
1898 int format_flags = 0;
1899
1900 e = av_dict_get(of->opts, "fflags", NULL, 0);
1901 if (e) {
1902 const AVOption *o = av_opt_find(of->ctx, "fflags", NULL, 0, 0);
1903 if (!o)
1904 return;
1905 av_opt_eval_flags(of->ctx, o, e->value, &format_flags);
1906 }
1907
1908 encoder_string_len = sizeof(LIBAVCODEC_IDENT) + strlen(ost->enc->name) + 2;
1909 encoder_string = av_mallocz(encoder_string_len);
1910 if (!encoder_string)
1911 exit_program(1);
1912
1913 if (!(format_flags & AVFMT_FLAG_BITEXACT))
1914 av_strlcpy(encoder_string, LIBAVCODEC_IDENT " ", encoder_string_len);
1915 av_strlcat(encoder_string, ost->enc->name, encoder_string_len);
1916 av_dict_set(&ost->st->metadata, "encoder", encoder_string,
1917 AV_DICT_DONT_STRDUP_VAL | AV_DICT_DONT_OVERWRITE);
1918 }
1919
1920 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1921 AVCodecContext *avctx)
1922 {
1923 char *p;
1924 int n = 1, i;
1925 int64_t t;
1926
1927 for (p = kf; *p; p++)
1928 if (*p == ',')
1929 n++;
1930 ost->forced_kf_count = n;
1931 ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1932 if (!ost->forced_kf_pts) {
1933 av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1934 exit_program(1);
1935 }
1936
1937 p = kf;
1938 for (i = 0; i < n; i++) {
1939 char *next = strchr(p, ',');
1940
1941 if (next)
1942 *next++ = 0;
1943
1944 t = parse_time_or_die("force_key_frames", p, 1);
1945 ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1946
1947 p = next;
1948 }
1949 }
1950
1951 static int init_output_stream_encode(OutputStream *ost)
1952 {
1953 InputStream *ist = get_input_stream(ost);
1954 AVCodecContext *enc_ctx = ost->enc_ctx;
1955 AVCodecContext *dec_ctx = NULL;
1956
1957 set_encoder_id(output_files[ost->file_index], ost);
1958
1959 if (ist) {
1960 ost->st->disposition = ist->st->disposition;
1961
1962 dec_ctx = ist->dec_ctx;
1963
1964 enc_ctx->bits_per_raw_sample = dec_ctx->bits_per_raw_sample;
1965 enc_ctx->chroma_sample_location = dec_ctx->chroma_sample_location;
1966 }
1967
1968 switch (enc_ctx->codec_type) {
1969 case AVMEDIA_TYPE_AUDIO:
1970 enc_ctx->sample_fmt = ost->filter->filter->inputs[0]->format;
1971 enc_ctx->sample_rate = ost->filter->filter->inputs[0]->sample_rate;
1972 enc_ctx->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
1973 enc_ctx->channels = av_get_channel_layout_nb_channels(enc_ctx->channel_layout);
1974 enc_ctx->time_base = (AVRational){ 1, enc_ctx->sample_rate };
1975 break;
1976 case AVMEDIA_TYPE_VIDEO:
1977 enc_ctx->time_base = ost->filter->filter->inputs[0]->time_base;
1978
1979 enc_ctx->width = ost->filter->filter->inputs[0]->w;
1980 enc_ctx->height = ost->filter->filter->inputs[0]->h;
1981 enc_ctx->sample_aspect_ratio = ost->st->sample_aspect_ratio =
1982 ost->frame_aspect_ratio ? // overridden by the -aspect cli option
1983 av_d2q(ost->frame_aspect_ratio * enc_ctx->height/enc_ctx->width, 255) :
1984 ost->filter->filter->inputs[0]->sample_aspect_ratio;
1985 enc_ctx->pix_fmt = ost->filter->filter->inputs[0]->format;
1986
1987 enc_ctx->framerate = ost->frame_rate;
1988
1989 ost->st->avg_frame_rate = ost->frame_rate;
1990
1991 if (dec_ctx &&
1992 (enc_ctx->width != dec_ctx->width ||
1993 enc_ctx->height != dec_ctx->height ||
1994 enc_ctx->pix_fmt != dec_ctx->pix_fmt)) {
1995 enc_ctx->bits_per_raw_sample = 0;
1996 }
1997
1998 if (ost->forced_keyframes)
1999 parse_forced_key_frames(ost->forced_keyframes, ost,
2000 ost->enc_ctx);
2001 break;
2002 case AVMEDIA_TYPE_SUBTITLE:
2003 enc_ctx->time_base = (AVRational){1, 1000};
2004 break;
2005 default:
2006 abort();
2007 break;
2008 }
2009
2010 return 0;
2011 }
2012
2013 static int init_output_stream(OutputStream *ost, char *error, int error_len)
2014 {
2015 int ret = 0;
2016
2017 if (ost->encoding_needed) {
2018 AVCodec *codec = ost->enc;
2019 AVCodecContext *dec = NULL;
2020 InputStream *ist;
2021
2022 ret = init_output_stream_encode(ost);
2023 if (ret < 0)
2024 return ret;
2025
2026 if ((ist = get_input_stream(ost)))
2027 dec = ist->dec_ctx;
2028 if (dec && dec->subtitle_header) {
2029 ost->enc_ctx->subtitle_header = av_malloc(dec->subtitle_header_size);
2030 if (!ost->enc_ctx->subtitle_header)
2031 return AVERROR(ENOMEM);
2032 memcpy(ost->enc_ctx->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2033 ost->enc_ctx->subtitle_header_size = dec->subtitle_header_size;
2034 }
2035 if (!av_dict_get(ost->encoder_opts, "threads", NULL, 0))
2036 av_dict_set(&ost->encoder_opts, "threads", "auto", 0);
2037
2038 if (ost->filter && ost->filter->filter->inputs[0]->hw_frames_ctx) {
2039 ost->enc_ctx->hw_frames_ctx = av_buffer_ref(ost->filter->filter->inputs[0]->hw_frames_ctx);
2040 if (!ost->enc_ctx->hw_frames_ctx)
2041 return AVERROR(ENOMEM);
2042 }
2043
2044 if ((ret = avcodec_open2(ost->enc_ctx, codec, &ost->encoder_opts)) < 0) {
2045 if (ret == AVERROR_EXPERIMENTAL)
2046 abort_codec_experimental(codec, 1);
2047 snprintf(error, error_len,
2048 "Error while opening encoder for output stream #%d:%d - "
2049 "maybe incorrect parameters such as bit_rate, rate, width or height",
2050 ost->file_index, ost->index);
2051 return ret;
2052 }
2053 assert_avoptions(ost->encoder_opts);
2054 if (ost->enc_ctx->bit_rate && ost->enc_ctx->bit_rate < 1000)
2055 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2056 "It takes bits/s as argument, not kbits/s\n");
2057
2058 ret = avcodec_parameters_from_context(ost->st->codecpar, ost->enc_ctx);
2059 if (ret < 0) {
2060 av_log(NULL, AV_LOG_FATAL,
2061 "Error initializing the output stream codec context.\n");
2062 exit_program(1);
2063 }
2064
2065 if (ost->enc_ctx->nb_coded_side_data) {
2066 int i;
2067
2068 ost->st->side_data = av_realloc_array(NULL, ost->enc_ctx->nb_coded_side_data,
2069 sizeof(*ost->st->side_data));
2070 if (!ost->st->side_data)
2071 return AVERROR(ENOMEM);
2072
2073 for (i = 0; i < ost->enc_ctx->nb_coded_side_data; i++) {
2074 const AVPacketSideData *sd_src = &ost->enc_ctx->coded_side_data[i];
2075 AVPacketSideData *sd_dst = &ost->st->side_data[i];
2076
2077 sd_dst->data = av_malloc(sd_src->size);
2078 if (!sd_dst->data)
2079 return AVERROR(ENOMEM);
2080 memcpy(sd_dst->data, sd_src->data, sd_src->size);
2081 sd_dst->size = sd_src->size;
2082 sd_dst->type = sd_src->type;
2083 ost->st->nb_side_data++;
2084 }
2085 }
2086
2087 ost->st->time_base = ost->enc_ctx->time_base;
2088 } else if (ost->stream_copy) {
2089 ret = init_output_stream_streamcopy(ost);
2090 if (ret < 0)
2091 return ret;
2092
2093 /*
2094 * FIXME: will the codec context used by the parser during streamcopy
2095 * This should go away with the new parser API.
2096 */
2097 ret = avcodec_parameters_to_context(ost->parser_avctx, ost->st->codecpar);
2098 if (ret < 0)
2099 return ret;
2100 }
2101
2102 /* initialize bitstream filters for the output stream
2103 * needs to be done here, because the codec id for streamcopy is not
2104 * known until now */
2105 ret = init_output_bsfs(ost);
2106 if (ret < 0)
2107 return ret;
2108
2109 ost->mux_timebase = ost->st->time_base;
2110
2111 ost->initialized = 1;
2112
2113 ret = check_init_output_file(output_files[ost->file_index], ost->file_index);
2114 if (ret < 0)
2115 return ret;
2116
2117 return ret;
2118 }
2119
2120 static int transcode_init(void)
2121 {
2122 int ret = 0, i, j, k;
2123 OutputStream *ost;
2124 InputStream *ist;
2125 char error[1024];
2126
2127 /* init framerate emulation */
2128 for (i = 0; i < nb_input_files; i++) {
2129 InputFile *ifile = input_files[i];
2130 if (ifile->rate_emu)
2131 for (j = 0; j < ifile->nb_streams; j++)
2132 input_streams[j + ifile->ist_index]->start = av_gettime_relative();
2133 }
2134
2135 /* init input streams */
2136 for (i = 0; i < nb_input_streams; i++)
2137 if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
2138 goto dump_format;
2139
2140 /* open each encoder */
2141 for (i = 0; i < nb_output_streams; i++) {
2142 // skip streams fed from filtergraphs until we have a frame for them
2143 if (output_streams[i]->filter)
2144 continue;
2145
2146 ret = init_output_stream(output_streams[i], error, sizeof(error));
2147 if (ret < 0)
2148 goto dump_format;
2149 }
2150
2151
2152 /* discard unused programs */
2153 for (i = 0; i < nb_input_files; i++) {
2154 InputFile *ifile = input_files[i];
2155 for (j = 0; j < ifile->ctx->nb_programs; j++) {
2156 AVProgram *p = ifile->ctx->programs[j];
2157 int discard = AVDISCARD_ALL;
2158
2159 for (k = 0; k < p->nb_stream_indexes; k++)
2160 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2161 discard = AVDISCARD_DEFAULT;
2162 break;
2163 }
2164 p->discard = discard;
2165 }
2166 }
2167
2168 dump_format:
2169 /* dump the stream mapping */
2170 av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2171 for (i = 0; i < nb_input_streams; i++) {
2172 ist = input_streams[i];
2173
2174 for (j = 0; j < ist->nb_filters; j++) {
2175 if (!filtergraph_is_simple(ist->filters[j]->graph)) {
2176 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d (%s) -> %s",
2177 ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2178 ist->filters[j]->name);
2179 if (nb_filtergraphs > 1)
2180 av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2181 av_log(NULL, AV_LOG_INFO, "\n");
2182 }
2183 }
2184 }
2185
2186 for (i = 0; i < nb_output_streams; i++) {
2187 ost = output_streams[i];
2188
2189 if (ost->attachment_filename) {
2190 /* an attached file */
2191 av_log(NULL, AV_LOG_INFO, " File %s -> Stream #%d:%d\n",
2192 ost->attachment_filename, ost->file_index, ost->index);
2193 continue;
2194 }
2195
2196 if (ost->filter && !filtergraph_is_simple(ost->filter->graph)) {
2197 /* output from a complex graph */
2198 av_log(NULL, AV_LOG_INFO, " %s", ost->filter->name);
2199 if (nb_filtergraphs > 1)
2200 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2201
2202 av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2203 ost->index, ost->enc ? ost->enc->name : "?");
2204 continue;
2205 }
2206
2207 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d -> #%d:%d",
2208 input_streams[ost->source_index]->file_index,
2209 input_streams[ost->source_index]->st->index,
2210 ost->file_index,
2211 ost->index);
2212 if (ost->sync_ist != input_streams[ost->source_index])
2213 av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2214 ost->sync_ist->file_index,
2215 ost->sync_ist->st->index);
2216 if (ost->stream_copy)
2217 av_log(NULL, AV_LOG_INFO, " (copy)");
2218 else {
2219 const AVCodec *in_codec = input_streams[ost->source_index]->dec;
2220 const AVCodec *out_codec = ost->enc;
2221 const char *decoder_name = "?";
2222 const char *in_codec_name = "?";
2223 const char *encoder_name = "?";
2224 const char *out_codec_name = "?";
2225 const AVCodecDescriptor *desc;
2226
2227 if (in_codec) {
2228 decoder_name = in_codec->name;
2229 desc = avcodec_descriptor_get(in_codec->id);
2230 if (desc)
2231 in_codec_name = desc->name;
2232 if (!strcmp(decoder_name, in_codec_name))
2233 decoder_name = "native";
2234 }
2235
2236 if (out_codec) {
2237 encoder_name = out_codec->name;
2238 desc = avcodec_descriptor_get(out_codec->id);
2239 if (desc)
2240 out_codec_name = desc->name;
2241 if (!strcmp(encoder_name, out_codec_name))
2242 encoder_name = "native";
2243 }
2244
2245 av_log(NULL, AV_LOG_INFO, " (%s (%s) -> %s (%s))",
2246 in_codec_name, decoder_name,
2247 out_codec_name, encoder_name);
2248 }
2249 av_log(NULL, AV_LOG_INFO, "\n");
2250 }
2251
2252 if (ret) {
2253 av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2254 return ret;
2255 }
2256
2257 return 0;
2258 }
2259
2260 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2261 static int need_output(void)
2262 {
2263 int i;
2264
2265 for (i = 0; i < nb_output_streams; i++) {
2266 OutputStream *ost = output_streams[i];
2267 OutputFile *of = output_files[ost->file_index];
2268 AVFormatContext *os = output_files[ost->file_index]->ctx;
2269
2270 if (ost->finished ||
2271 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2272 continue;
2273 if (ost->frame_number >= ost->max_frames) {
2274 int j;
2275 for (j = 0; j < of->ctx->nb_streams; j++)
2276 output_streams[of->ost_index + j]->finished = 1;
2277 continue;
2278 }
2279
2280 return 1;
2281 }
2282
2283 return 0;
2284 }
2285
2286 static InputFile *select_input_file(void)
2287 {
2288 InputFile *ifile = NULL;
2289 int64_t ipts_min = INT64_MAX;
2290 int i;
2291
2292 for (i = 0; i < nb_input_streams; i++) {
2293 InputStream *ist = input_streams[i];
2294 int64_t ipts = ist->last_dts;
2295
2296 if (ist->discard || input_files[ist->file_index]->eagain)
2297 continue;
2298 if (!input_files[ist->file_index]->eof_reached) {
2299 if (ipts < ipts_min) {
2300 ipts_min = ipts;
2301 ifile = input_files[ist->file_index];
2302 }
2303 }
2304 }
2305
2306 return ifile;
2307 }
2308
2309 #if HAVE_PTHREADS
2310 static void *input_thread(void *arg)
2311 {
2312 InputFile *f = arg;
2313 int ret = 0;
2314
2315 while (!transcoding_finished && ret >= 0) {
2316 AVPacket pkt;
2317 ret = av_read_frame(f->ctx, &pkt);
2318
2319 if (ret == AVERROR(EAGAIN)) {
2320 av_usleep(10000);
2321 ret = 0;
2322 continue;
2323 } else if (ret < 0)
2324 break;
2325
2326 pthread_mutex_lock(&f->fifo_lock);
2327 while (!av_fifo_space(f->fifo))
2328 pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2329
2330 av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2331
2332 pthread_mutex_unlock(&f->fifo_lock);
2333 }
2334
2335 f->finished = 1;
2336 return NULL;
2337 }
2338
2339 static void free_input_threads(void)
2340 {
2341 int i;
2342
2343 if (nb_input_files == 1)
2344 return;
2345
2346 transcoding_finished = 1;
2347
2348 for (i = 0; i < nb_input_files; i++) {
2349 InputFile *f = input_files[i];
2350 AVPacket pkt;
2351
2352 if (!f->fifo || f->joined)
2353 continue;
2354
2355 pthread_mutex_lock(&f->fifo_lock);
2356 while (av_fifo_size(f->fifo)) {
2357 av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2358 av_packet_unref(&pkt);
2359 }
2360 pthread_cond_signal(&f->fifo_cond);
2361 pthread_mutex_unlock(&f->fifo_lock);
2362
2363 pthread_join(f->thread, NULL);
2364 f->joined = 1;
2365
2366 while (av_fifo_size(f->fifo)) {
2367 av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2368 av_packet_unref(&pkt);
2369 }
2370 av_fifo_free(f->fifo);
2371 }
2372 }
2373
2374 static int init_input_threads(void)
2375 {
2376 int i, ret;
2377
2378 if (nb_input_files == 1)
2379 return 0;
2380
2381 for (i = 0; i < nb_input_files; i++) {
2382 InputFile *f = input_files[i];
2383
2384 if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2385 return AVERROR(ENOMEM);
2386
2387 pthread_mutex_init(&f->fifo_lock, NULL);
2388 pthread_cond_init (&f->fifo_cond, NULL);
2389
2390 if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2391 return AVERROR(ret);
2392 }
2393 return 0;
2394 }
2395
2396 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2397 {
2398 int ret = 0;
2399
2400 pthread_mutex_lock(&f->fifo_lock);
2401
2402 if (av_fifo_size(f->fifo)) {
2403 av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2404 pthread_cond_signal(&f->fifo_cond);
2405 } else {
2406 if (f->finished)
2407 ret = AVERROR_EOF;
2408 else
2409 ret = AVERROR(EAGAIN);
2410 }
2411
2412 pthread_mutex_unlock(&f->fifo_lock);
2413
2414 return ret;
2415 }
2416 #endif
2417
2418 static int get_input_packet(InputFile *f, AVPacket *pkt)
2419 {
2420 if (f->rate_emu) {
2421 int i;
2422 for (i = 0; i < f->nb_streams; i++) {
2423 InputStream *ist = input_streams[f->ist_index + i];
2424 int64_t pts = av_rescale(ist->last_dts, 1000000, AV_TIME_BASE);
2425 int64_t now = av_gettime_relative() - ist->start;
2426 if (pts > now)
2427 return AVERROR(EAGAIN);
2428 }
2429 }
2430
2431 #if HAVE_PTHREADS
2432 if (nb_input_files > 1)
2433 return get_input_packet_mt(f, pkt);
2434 #endif
2435 return av_read_frame(f->ctx, pkt);
2436 }
2437
2438 static int got_eagain(void)
2439 {
2440 int i;
2441 for (i = 0; i < nb_input_files; i++)
2442 if (input_files[i]->eagain)
2443 return 1;
2444 return 0;
2445 }
2446
2447 static void reset_eagain(void)
2448 {
2449 int i;
2450 for (i = 0; i < nb_input_files; i++)
2451 input_files[i]->eagain = 0;
2452 }
2453
2454 // set duration to max(tmp, duration) in a proper time base and return duration's time_base
2455 static AVRational duration_max(int64_t tmp, int64_t *duration, AVRational tmp_time_base,
2456 AVRational time_base)
2457 {
2458 int ret;
2459
2460 if (!*duration) {
2461 *duration = tmp;
2462 return tmp_time_base;
2463 }
2464
2465 ret = av_compare_ts(*duration, time_base, tmp, tmp_time_base);
2466 if (ret < 0) {
2467 *duration = tmp;
2468 return tmp_time_base;
2469 }
2470
2471 return time_base;
2472 }
2473
2474 static int seek_to_start(InputFile *ifile, AVFormatContext *is)
2475 {
2476 InputStream *ist;
2477 AVCodecContext *avctx;
2478 int i, ret, has_audio = 0;
2479 int64_t duration = 0;
2480
2481 ret = av_seek_frame(is, -1, is->start_time, 0);
2482 if (ret < 0)
2483 return ret;
2484
2485 for (i = 0; i < ifile->nb_streams; i++) {
2486 ist = input_streams[ifile->ist_index + i];
2487 avctx = ist->dec_ctx;
2488
2489 // flush decoders
2490 if (ist->decoding_needed) {
2491 process_input_packet(ist, NULL, 1);
2492 avcodec_flush_buffers(avctx);
2493 }
2494
2495 /* duration is the length of the last frame in a stream
2496 * when audio stream is present we don't care about
2497 * last video frame length because it's not defined exactly */
2498 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && ist->nb_samples)
2499 has_audio = 1;
2500 }
2501
2502 for (i = 0; i < ifile->nb_streams; i++) {
2503 ist = input_streams[ifile->ist_index + i];
2504 avctx = ist->dec_ctx;
2505
2506 if (has_audio) {
2507 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && ist->nb_samples) {
2508 AVRational sample_rate = {1, avctx->sample_rate};
2509
2510 duration = av_rescale_q(ist->nb_samples, sample_rate, ist->st->time_base);
2511 } else
2512 continue;
2513 } else {
2514 if (ist->framerate.num) {
2515 duration = av_rescale_q(1, ist->framerate, ist->st->time_base);
2516 } else if (ist->st->avg_frame_rate.num) {
2517 duration = av_rescale_q(1, ist->st->avg_frame_rate, ist->st->time_base);
2518 } else duration = 1;
2519 }
2520 if (!ifile->duration)
2521 ifile->time_base = ist->st->time_base;
2522 /* the total duration of the stream, max_pts - min_pts is
2523 * the duration of the stream without the last frame */
2524 duration += ist->max_pts - ist->min_pts;
2525 ifile->time_base = duration_max(duration, &ifile->duration, ist->st->time_base,
2526 ifile->time_base);
2527 }
2528
2529 if (ifile->loop > 0)
2530 ifile->loop--;
2531
2532 return ret;
2533 }
2534
2535 /*
2536 * Read one packet from an input file and send it for
2537 * - decoding -> lavfi (audio/video)
2538 * - decoding -> encoding -> muxing (subtitles)
2539 * - muxing (streamcopy)
2540 *
2541 * Return
2542 * - 0 -- one packet was read and processed
2543 * - AVERROR(EAGAIN) -- no packets were available for selected file,
2544 * this function should be called again
2545 * - AVERROR_EOF -- this function should not be called again
2546 */
2547 static int process_input(void)
2548 {
2549 InputFile *ifile;
2550 AVFormatContext *is;
2551 InputStream *ist;
2552 AVPacket pkt;
2553 int ret, i, j;
2554 int64_t duration;
2555
2556 /* select the stream that we must read now */
2557 ifile = select_input_file();
2558 /* if none, if is finished */
2559 if (!ifile) {
2560 if (got_eagain()) {
2561 reset_eagain();
2562 av_usleep(10000);
2563 return AVERROR(EAGAIN);
2564 }
2565 av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from.\n");
2566 return AVERROR_EOF;
2567 }
2568
2569 is = ifile->ctx;
2570 ret = get_input_packet(ifile, &pkt);
2571
2572 if (ret == AVERROR(EAGAIN)) {
2573 ifile->eagain = 1;
2574 return ret;
2575 }
2576 if (ret < 0 && ifile->loop) {
2577 if ((ret = seek_to_start(ifile, is)) < 0)
2578 return ret;
2579 ret = get_input_packet(ifile, &pkt);
2580 }
2581 if (ret < 0) {
2582 if (ret != AVERROR_EOF) {
2583 print_error(is->filename, ret);
2584 if (exit_on_error)
2585 exit_program(1);
2586 }
2587 ifile->eof_reached = 1;
2588
2589 for (i = 0; i < ifile->nb_streams; i++) {
2590 ist = input_streams[ifile->ist_index + i];
2591 if (ist->decoding_needed)
2592 process_input_packet(ist, NULL, 0);
2593
2594 /* mark all outputs that don't go through lavfi as finished */
2595 for (j = 0; j < nb_output_streams; j++) {
2596 OutputStream *ost = output_streams[j];
2597
2598 if (ost->source_index == ifile->ist_index + i &&
2599 (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2600 finish_output_stream(ost);
2601 }
2602 }
2603
2604 return AVERROR(EAGAIN);
2605 }
2606
2607 reset_eagain();
2608
2609 if (do_pkt_dump) {
2610 av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2611 is->streams[pkt.stream_index]);
2612 }
2613 /* the following test is needed in case new streams appear
2614 dynamically in stream : we ignore them */
2615 if (pkt.stream_index >= ifile->nb_streams)
2616 goto discard_packet;
2617
2618 ist = input_streams[ifile->ist_index + pkt.stream_index];
2619
2620 ist->data_size += pkt.size;
2621 ist->nb_packets++;
2622
2623 if (ist->discard)
2624 goto discard_packet;
2625
2626 /* add the stream-global side data to the first packet */
2627 if (ist->nb_packets == 1)
2628 for (i = 0; i < ist->st->nb_side_data; i++) {
2629 AVPacketSideData *src_sd = &ist->st->side_data[i];
2630 uint8_t *dst_data;
2631
2632 if (av_packet_get_side_data(&pkt, src_sd->type, NULL))
2633 continue;
2634 if (ist->autorotate && src_sd->type == AV_PKT_DATA_DISPLAYMATRIX)
2635 continue;
2636
2637 dst_data = av_packet_new_side_data(&pkt, src_sd->type, src_sd->size);
2638 if (!dst_data)
2639 exit_program(1);
2640
2641 memcpy(dst_data, src_sd->data, src_sd->size);
2642 }
2643
2644 if (pkt.dts != AV_NOPTS_VALUE)
2645 pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2646 if (pkt.pts != AV_NOPTS_VALUE)
2647 pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2648
2649 if (pkt.pts != AV_NOPTS_VALUE)
2650 pkt.pts *= ist->ts_scale;
2651 if (pkt.dts != AV_NOPTS_VALUE)
2652 pkt.dts *= ist->ts_scale;
2653
2654 if ((ist->dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
2655 ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) &&
2656 pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2657 (is->iformat->flags & AVFMT_TS_DISCONT)) {
2658 int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2659 int64_t delta = pkt_dts - ist->next_dts;
2660
2661 if ((FFABS(delta) > 1LL * dts_delta_threshold * AV_TIME_BASE || pkt_dts + 1 < ist->last_dts) && !copy_ts) {
2662 ifile->ts_offset -= delta;
2663 av_log(NULL, AV_LOG_DEBUG,
2664 "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2665 delta, ifile->ts_offset);
2666 pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2667 if (pkt.pts != AV_NOPTS_VALUE)
2668 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2669 }
2670 }
2671 duration = av_rescale_q(ifile->duration, ifile->time_base, ist->st->time_base);
2672 if (pkt.pts != AV_NOPTS_VALUE) {
2673 pkt.pts += duration;
2674 ist->max_pts = FFMAX(pkt.pts, ist->max_pts);
2675 ist->min_pts = FFMIN(pkt.pts, ist->min_pts);
2676 }
2677
2678 if (pkt.dts != AV_NOPTS_VALUE)
2679 pkt.dts += duration;
2680
2681 process_input_packet(ist, &pkt, 0);
2682
2683 discard_packet:
2684 av_packet_unref(&pkt);
2685
2686 return 0;
2687 }
2688
2689 /*
2690 * The following code is the main loop of the file converter
2691 */
2692 static int transcode(void)
2693 {
2694 int ret, i, need_input = 1;
2695 AVFormatContext *os;
2696 OutputStream *ost;
2697 InputStream *ist;
2698 int64_t timer_start;
2699
2700 ret = transcode_init();
2701 if (ret < 0)
2702 goto fail;
2703
2704 av_log(NULL, AV_LOG_INFO, "Press ctrl-c to stop encoding\n");
2705 term_init();
2706
2707 timer_start = av_gettime_relative();
2708
2709 #if HAVE_PTHREADS
2710 if ((ret = init_input_threads()) < 0)
2711 goto fail;
2712 #endif
2713
2714 while (!received_sigterm) {
2715 /* check if there's any stream where output is still needed */
2716 if (!need_output()) {
2717 av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
2718 break;
2719 }
2720
2721 /* read and process one input packet if needed */
2722 if (need_input) {
2723 ret = process_input();
2724 if (ret == AVERROR_EOF)
2725 need_input = 0;
2726 }
2727
2728 ret = poll_filters();
2729 if (ret < 0 && ret != AVERROR_EOF) {
2730 char errbuf[128];
2731 av_strerror(ret, errbuf, sizeof(errbuf));
2732
2733 av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n", errbuf);
2734 break;
2735 }
2736
2737 /* dump report by using the output first video and audio streams */
2738 print_report(0, timer_start);
2739 }
2740 #if HAVE_PTHREADS
2741 free_input_threads();
2742 #endif
2743
2744 /* at the end of stream, we must flush the decoder buffers */
2745 for (i = 0; i < nb_input_streams; i++) {
2746 ist = input_streams[i];
2747 if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
2748 process_input_packet(ist, NULL, 0);
2749 }
2750 }
2751 poll_filters();
2752 flush_encoders();
2753
2754 term_exit();
2755
2756 /* write the trailer if needed and close file */
2757 for (i = 0; i < nb_output_files; i++) {
2758 os = output_files[i]->ctx;
2759 if (!output_files[i]->header_written) {
2760 av_log(NULL, AV_LOG_ERROR,
2761 "Nothing was written into output file %d (%s), because "
2762 "at least one of its streams received no packets.\n",
2763 i, os->filename);
2764 continue;
2765 }
2766 av_write_trailer(os);
2767 }
2768
2769 /* dump report by using the first video and audio streams */
2770 print_report(1, timer_start);
2771
2772 /* close each encoder */
2773 for (i = 0; i < nb_output_streams; i++) {
2774 ost = output_streams[i];
2775 if (ost->encoding_needed) {
2776 av_freep(&ost->enc_ctx->stats_in);
2777 }
2778 }
2779
2780 /* close each decoder */
2781 for (i = 0; i < nb_input_streams; i++) {
2782 ist = input_streams[i];
2783 if (ist->decoding_needed) {
2784 avcodec_close(ist->dec_ctx);
2785 if (ist->hwaccel_uninit)
2786 ist->hwaccel_uninit(ist->dec_ctx);
2787 }
2788 }
2789
2790 av_buffer_unref(&hw_device_ctx);
2791
2792 /* finished ! */
2793 ret = 0;
2794
2795 fail:
2796 #if HAVE_PTHREADS
2797 free_input_threads();
2798 #endif
2799
2800 if (output_streams) {
2801 for (i = 0; i < nb_output_streams; i++) {
2802 ost = output_streams[i];
2803 if (ost) {
2804 if (ost->logfile) {
2805 fclose(ost->logfile);
2806 ost->logfile = NULL;
2807 }
2808 av_free(ost->forced_kf_pts);
2809 av_dict_free(&ost->encoder_opts);
2810 av_dict_free(&ost->resample_opts);
2811 }
2812 }
2813 }
2814 return ret;
2815 }
2816
2817 static int64_t getutime(void)
2818 {
2819 #if HAVE_GETRUSAGE
2820 struct rusage rusage;
2821
2822 getrusage(RUSAGE_SELF, &rusage);
2823 return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
2824 #elif HAVE_GETPROCESSTIMES
2825 HANDLE proc;
2826 FILETIME c, e, k, u;
2827 proc = GetCurrentProcess();
2828 GetProcessTimes(proc, &c, &e, &k, &u);
2829 return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
2830 #else
2831 return av_gettime_relative();
2832 #endif
2833 }
2834
2835 static int64_t getmaxrss(void)
2836 {
2837 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
2838 struct rusage rusage;
2839 getrusage(RUSAGE_SELF, &rusage);
2840 return (int64_t)rusage.ru_maxrss * 1024;
2841 #elif HAVE_GETPROCESSMEMORYINFO
2842 HANDLE proc;
2843 PROCESS_MEMORY_COUNTERS memcounters;
2844 proc = GetCurrentProcess();
2845 memcounters.cb = sizeof(memcounters);
2846 GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
2847 return memcounters.PeakPagefileUsage;
2848 #else
2849 return 0;
2850 #endif
2851 }
2852
2853 int main(int argc, char **argv)
2854 {
2855 int i, ret;
2856 int64_t ti;
2857
2858 register_exit(avconv_cleanup);
2859
2860 av_log_set_flags(AV_LOG_SKIP_REPEATED);
2861 parse_loglevel(argc, argv, options);
2862
2863 avcodec_register_all();
2864 #if CONFIG_AVDEVICE
2865 avdevice_register_all();
2866 #endif
2867 avfilter_register_all();
2868 av_register_all();
2869 avformat_network_init();
2870
2871 show_banner();
2872
2873 /* parse options and open all input/output files */
2874 ret = avconv_parse_options(argc, argv);
2875 if (ret < 0)
2876 exit_program(1);
2877
2878 if (nb_output_files <= 0 && nb_input_files == 0) {
2879 show_usage();
2880 av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
2881 exit_program(1);
2882 }
2883
2884 /* file converter / grab */
2885 if (nb_output_files <= 0) {
2886 fprintf(stderr, "At least one output file must be specified\n");
2887 exit_program(1);
2888 }
2889
2890 for (i = 0; i < nb_output_files; i++) {
2891 if (strcmp(output_files[i]->ctx->oformat->name, "rtp"))
2892 want_sdp = 0;
2893 }
2894
2895 ti = getutime();
2896 if (transcode() < 0)
2897 exit_program(1);
2898 ti = getutime() - ti;
2899 if (do_benchmark) {
2900 int maxrss = getmaxrss() / 1024;
2901 printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss);
2902 }
2903
2904 exit_program(0);
2905 return 0;
2906 }