avconv: factor out initializing stream parameters for encoding
[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 av_buffer_unref(&fg->inputs[j]->hw_frames_ctx);
151 av_freep(&fg->inputs[j]->name);
152 av_freep(&fg->inputs[j]);
153 }
154 av_freep(&fg->inputs);
155 for (j = 0; j < fg->nb_outputs; j++) {
156 av_freep(&fg->outputs[j]->name);
157 av_freep(&fg->outputs[j]);
158 }
159 av_freep(&fg->outputs);
160 av_freep(&fg->graph_desc);
161
162 av_freep(&filtergraphs[i]);
163 }
164 av_freep(&filtergraphs);
165
166 /* close files */
167 for (i = 0; i < nb_output_files; i++) {
168 OutputFile *of = output_files[i];
169 AVFormatContext *s = of->ctx;
170 if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE) && s->pb)
171 avio_close(s->pb);
172 avformat_free_context(s);
173 av_dict_free(&of->opts);
174
175 av_freep(&output_files[i]);
176 }
177 for (i = 0; i < nb_output_streams; i++) {
178 OutputStream *ost = output_streams[i];
179
180 for (j = 0; j < ost->nb_bitstream_filters; j++)
181 av_bsf_free(&ost->bsf_ctx[j]);
182 av_freep(&ost->bsf_ctx);
183 av_freep(&ost->bitstream_filters);
184
185 av_frame_free(&ost->filtered_frame);
186
187 av_parser_close(ost->parser);
188 avcodec_free_context(&ost->parser_avctx);
189
190 av_freep(&ost->forced_keyframes);
191 av_freep(&ost->avfilter);
192 av_freep(&ost->logfile_prefix);
193
194 avcodec_free_context(&ost->enc_ctx);
195
196 while (av_fifo_size(ost->muxing_queue)) {
197 AVPacket pkt;
198 av_fifo_generic_read(ost->muxing_queue, &pkt, sizeof(pkt), NULL);
199 av_packet_unref(&pkt);
200 }
201 av_fifo_free(ost->muxing_queue);
202
203 av_freep(&output_streams[i]);
204 }
205 for (i = 0; i < nb_input_files; i++) {
206 avformat_close_input(&input_files[i]->ctx);
207 av_freep(&input_files[i]);
208 }
209 for (i = 0; i < nb_input_streams; i++) {
210 InputStream *ist = input_streams[i];
211
212 av_frame_free(&ist->decoded_frame);
213 av_frame_free(&ist->filter_frame);
214 av_dict_free(&ist->decoder_opts);
215 av_freep(&ist->filters);
216 av_freep(&ist->hwaccel_device);
217
218 avcodec_free_context(&ist->dec_ctx);
219
220 av_freep(&input_streams[i]);
221 }
222
223 if (vstats_file)
224 fclose(vstats_file);
225 av_free(vstats_filename);
226
227 av_freep(&input_streams);
228 av_freep(&input_files);
229 av_freep(&output_streams);
230 av_freep(&output_files);
231
232 uninit_opts();
233
234 avformat_network_deinit();
235
236 if (received_sigterm) {
237 av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
238 (int) received_sigterm);
239 exit (255);
240 }
241 }
242
243 void assert_avoptions(AVDictionary *m)
244 {
245 AVDictionaryEntry *t;
246 if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
247 av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
248 exit_program(1);
249 }
250 }
251
252 static void abort_codec_experimental(AVCodec *c, int encoder)
253 {
254 const char *codec_string = encoder ? "encoder" : "decoder";
255 AVCodec *codec;
256 av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
257 "results.\nAdd '-strict experimental' if you want to use it.\n",
258 codec_string, c->name);
259 codec = encoder ? avcodec_find_encoder(c->id) : avcodec_find_decoder(c->id);
260 if (!(codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL))
261 av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
262 codec_string, codec->name);
263 exit_program(1);
264 }
265
266 static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost)
267 {
268 AVFormatContext *s = of->ctx;
269 AVStream *st = ost->st;
270 int ret;
271
272 if (!of->header_written) {
273 AVPacket tmp_pkt;
274 /* the muxer is not initialized yet, buffer the packet */
275 if (!av_fifo_space(ost->muxing_queue)) {
276 int new_size = FFMIN(2 * av_fifo_size(ost->muxing_queue),
277 ost->max_muxing_queue_size);
278 if (new_size <= av_fifo_size(ost->muxing_queue)) {
279 av_log(NULL, AV_LOG_ERROR,
280 "Too many packets buffered for output stream %d:%d.\n",
281 ost->file_index, ost->st->index);
282 exit_program(1);
283 }
284 ret = av_fifo_realloc2(ost->muxing_queue, new_size);
285 if (ret < 0)
286 exit_program(1);
287 }
288 av_packet_move_ref(&tmp_pkt, pkt);
289 av_fifo_generic_write(ost->muxing_queue, &tmp_pkt, sizeof(tmp_pkt), NULL);
290 return;
291 }
292
293 /*
294 * Audio encoders may split the packets -- #frames in != #packets out.
295 * But there is no reordering, so we can limit the number of output packets
296 * by simply dropping them here.
297 * Counting encoded video frames needs to be done separately because of
298 * reordering, see do_video_out()
299 */
300 if (!(st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && ost->encoding_needed)) {
301 if (ost->frame_number >= ost->max_frames) {
302 av_packet_unref(pkt);
303 return;
304 }
305 ost->frame_number++;
306 }
307 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
308 uint8_t *sd = av_packet_get_side_data(pkt, AV_PKT_DATA_QUALITY_FACTOR,
309 NULL);
310 ost->quality = sd ? *(int *)sd : -1;
311
312 if (ost->frame_rate.num) {
313 pkt->duration = av_rescale_q(1, av_inv_q(ost->frame_rate),
314 ost->st->time_base);
315 }
316 }
317
318 if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS) &&
319 ost->last_mux_dts != AV_NOPTS_VALUE &&
320 pkt->dts < ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT)) {
321 av_log(NULL, AV_LOG_WARNING, "Non-monotonous DTS in output stream "
322 "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
323 ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
324 if (exit_on_error) {
325 av_log(NULL, AV_LOG_FATAL, "aborting.\n");
326 exit_program(1);
327 }
328 av_log(NULL, AV_LOG_WARNING, "changing to %"PRId64". This may result "
329 "in incorrect timestamps in the output file.\n",
330 ost->last_mux_dts + 1);
331 pkt->dts = ost->last_mux_dts + 1;
332 if (pkt->pts != AV_NOPTS_VALUE)
333 pkt->pts = FFMAX(pkt->pts, pkt->dts);
334 }
335 ost->last_mux_dts = pkt->dts;
336
337 ost->data_size += pkt->size;
338 ost->packets_written++;
339
340 pkt->stream_index = ost->index;
341 ret = av_interleaved_write_frame(s, pkt);
342 if (ret < 0) {
343 print_error("av_interleaved_write_frame()", ret);
344 exit_program(1);
345 }
346 }
347
348 static void output_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost)
349 {
350 int ret = 0;
351
352 /* apply the output bitstream filters, if any */
353 if (ost->nb_bitstream_filters) {
354 int idx;
355
356 ret = av_bsf_send_packet(ost->bsf_ctx[0], pkt);
357 if (ret < 0)
358 goto finish;
359
360 idx = 1;
361 while (idx) {
362 /* get a packet from the previous filter up the chain */
363 ret = av_bsf_receive_packet(ost->bsf_ctx[idx - 1], pkt);
364 if (ret == AVERROR(EAGAIN)) {
365 ret = 0;
366 idx--;
367 continue;
368 } else if (ret < 0)
369 goto finish;
370
371 /* send it to the next filter down the chain or to the muxer */
372 if (idx < ost->nb_bitstream_filters) {
373 ret = av_bsf_send_packet(ost->bsf_ctx[idx], pkt);
374 if (ret < 0)
375 goto finish;
376 idx++;
377 } else
378 write_packet(of, pkt, ost);
379 }
380 } else
381 write_packet(of, pkt, ost);
382
383 finish:
384 if (ret < 0 && ret != AVERROR_EOF) {
385 av_log(NULL, AV_LOG_FATAL, "Error applying bitstream filters to an output "
386 "packet for stream #%d:%d.\n", ost->file_index, ost->index);
387 exit_program(1);
388 }
389 }
390
391 static int check_recording_time(OutputStream *ost)
392 {
393 OutputFile *of = output_files[ost->file_index];
394
395 if (of->recording_time != INT64_MAX &&
396 av_compare_ts(ost->sync_opts - ost->first_pts, ost->enc_ctx->time_base, of->recording_time,
397 AV_TIME_BASE_Q) >= 0) {
398 ost->finished = 1;
399 return 0;
400 }
401 return 1;
402 }
403
404 static void do_audio_out(OutputFile *of, OutputStream *ost,
405 AVFrame *frame)
406 {
407 AVCodecContext *enc = ost->enc_ctx;
408 AVPacket pkt;
409 int ret;
410
411 av_init_packet(&pkt);
412 pkt.data = NULL;
413 pkt.size = 0;
414
415 if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
416 frame->pts = ost->sync_opts;
417 ost->sync_opts = frame->pts + frame->nb_samples;
418
419 ost->samples_encoded += frame->nb_samples;
420 ost->frames_encoded++;
421
422 ret = avcodec_send_frame(enc, frame);
423 if (ret < 0)
424 goto error;
425
426 while (1) {
427 ret = avcodec_receive_packet(enc, &pkt);
428 if (ret == AVERROR(EAGAIN))
429 break;
430 if (ret < 0)
431 goto error;
432
433 av_packet_rescale_ts(&pkt, enc->time_base, ost->st->time_base);
434 output_packet(of, &pkt, ost);
435 }
436
437 return;
438 error:
439 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
440 exit_program(1);
441 }
442
443 static void do_subtitle_out(OutputFile *of,
444 OutputStream *ost,
445 InputStream *ist,
446 AVSubtitle *sub,
447 int64_t pts)
448 {
449 static uint8_t *subtitle_out = NULL;
450 int subtitle_out_max_size = 1024 * 1024;
451 int subtitle_out_size, nb, i;
452 AVCodecContext *enc;
453 AVPacket pkt;
454
455 if (pts == AV_NOPTS_VALUE) {
456 av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
457 if (exit_on_error)
458 exit_program(1);
459 return;
460 }
461
462 enc = ost->enc_ctx;
463
464 if (!subtitle_out) {
465 subtitle_out = av_malloc(subtitle_out_max_size);
466 }
467
468 /* Note: DVB subtitle need one packet to draw them and one other
469 packet to clear them */
470 /* XXX: signal it in the codec context ? */
471 if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
472 nb = 2;
473 else
474 nb = 1;
475
476 for (i = 0; i < nb; i++) {
477 ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
478 if (!check_recording_time(ost))
479 return;
480
481 sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
482 // start_display_time is required to be 0
483 sub->pts += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
484 sub->end_display_time -= sub->start_display_time;
485 sub->start_display_time = 0;
486
487 ost->frames_encoded++;
488
489 subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
490 subtitle_out_max_size, sub);
491 if (subtitle_out_size < 0) {
492 av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
493 exit_program(1);
494 }
495
496 av_init_packet(&pkt);
497 pkt.data = subtitle_out;
498 pkt.size = subtitle_out_size;
499 pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
500 if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
501 /* XXX: the pts correction is handled here. Maybe handling
502 it in the codec would be better */
503 if (i == 0)
504 pkt.pts += 90 * sub->start_display_time;
505 else
506 pkt.pts += 90 * sub->end_display_time;
507 }
508 output_packet(of, &pkt, ost);
509 }
510 }
511
512 static void do_video_out(OutputFile *of,
513 OutputStream *ost,
514 AVFrame *in_picture,
515 int *frame_size)
516 {
517 int ret, format_video_sync;
518 AVPacket pkt;
519 AVCodecContext *enc = ost->enc_ctx;
520
521 *frame_size = 0;
522
523 format_video_sync = video_sync_method;
524 if (format_video_sync == VSYNC_AUTO)
525 format_video_sync = (of->ctx->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH :
526 (of->ctx->oformat->flags & AVFMT_VARIABLE_FPS) ? VSYNC_VFR : VSYNC_CFR;
527 if (format_video_sync != VSYNC_PASSTHROUGH &&
528 ost->frame_number &&
529 in_picture->pts != AV_NOPTS_VALUE &&
530 in_picture->pts < ost->sync_opts) {
531 nb_frames_drop++;
532 av_log(NULL, AV_LOG_WARNING,
533 "*** dropping frame %d from stream %d at ts %"PRId64"\n",
534 ost->frame_number, ost->st->index, in_picture->pts);
535 return;
536 }
537
538 if (in_picture->pts == AV_NOPTS_VALUE)
539 in_picture->pts = ost->sync_opts;
540 ost->sync_opts = in_picture->pts;
541
542
543 if (!ost->frame_number)
544 ost->first_pts = in_picture->pts;
545
546 av_init_packet(&pkt);
547 pkt.data = NULL;
548 pkt.size = 0;
549
550 if (ost->frame_number >= ost->max_frames)
551 return;
552
553 if (enc->flags & (AV_CODEC_FLAG_INTERLACED_DCT | AV_CODEC_FLAG_INTERLACED_ME) &&
554 ost->top_field_first >= 0)
555 in_picture->top_field_first = !!ost->top_field_first;
556
557 in_picture->quality = enc->global_quality;
558 in_picture->pict_type = 0;
559 if (ost->forced_kf_index < ost->forced_kf_count &&
560 in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
561 in_picture->pict_type = AV_PICTURE_TYPE_I;
562 ost->forced_kf_index++;
563 }
564
565 ost->frames_encoded++;
566
567 ret = avcodec_send_frame(enc, in_picture);
568 if (ret < 0)
569 goto error;
570
571 /*
572 * For video, there may be reordering, so we can't throw away frames on
573 * encoder flush, we need to limit them here, before they go into encoder.
574 */
575 ost->frame_number++;
576
577 while (1) {
578 ret = avcodec_receive_packet(enc, &pkt);
579 if (ret == AVERROR(EAGAIN))
580 break;
581 if (ret < 0)
582 goto error;
583
584 av_packet_rescale_ts(&pkt, enc->time_base, ost->st->time_base);
585 output_packet(of, &pkt, ost);
586 *frame_size = pkt.size;
587
588 /* if two pass, output log */
589 if (ost->logfile && enc->stats_out) {
590 fprintf(ost->logfile, "%s", enc->stats_out);
591 }
592
593 ost->sync_opts++;
594 }
595
596 return;
597 error:
598 av_assert0(ret != AVERROR(EAGAIN) && ret != AVERROR_EOF);
599 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
600 exit_program(1);
601 }
602
603 #if FF_API_CODED_FRAME && FF_API_ERROR_FRAME
604 static double psnr(double d)
605 {
606 return -10.0 * log(d) / log(10.0);
607 }
608 #endif
609
610 static void do_video_stats(OutputStream *ost, int frame_size)
611 {
612 AVCodecContext *enc;
613 int frame_number;
614 double ti1, bitrate, avg_bitrate;
615
616 /* this is executed just the first time do_video_stats is called */
617 if (!vstats_file) {
618 vstats_file = fopen(vstats_filename, "w");
619 if (!vstats_file) {
620 perror("fopen");
621 exit_program(1);
622 }
623 }
624
625 enc = ost->enc_ctx;
626 if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
627 frame_number = ost->frame_number;
628 fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number,
629 ost->quality / (float)FF_QP2LAMBDA);
630
631 #if FF_API_CODED_FRAME && FF_API_ERROR_FRAME
632 FF_DISABLE_DEPRECATION_WARNINGS
633 if (enc->flags & AV_CODEC_FLAG_PSNR)
634 fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
635 FF_ENABLE_DEPRECATION_WARNINGS
636 #endif
637
638 fprintf(vstats_file,"f_size= %6d ", frame_size);
639 /* compute pts value */
640 ti1 = ost->sync_opts * av_q2d(enc->time_base);
641 if (ti1 < 0.01)
642 ti1 = 0.01;
643
644 bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
645 avg_bitrate = (double)(ost->data_size * 8) / ti1 / 1000.0;
646 fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
647 (double)ost->data_size / 1024, ti1, bitrate, avg_bitrate);
648 #if FF_API_CODED_FRAME
649 FF_DISABLE_DEPRECATION_WARNINGS
650 fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
651 FF_ENABLE_DEPRECATION_WARNINGS
652 #endif
653 }
654 }
655
656 /*
657 * Read one frame for lavfi output for ost and encode it.
658 */
659 static int poll_filter(OutputStream *ost)
660 {
661 OutputFile *of = output_files[ost->file_index];
662 AVFrame *filtered_frame = NULL;
663 int frame_size, ret;
664
665 if (!ost->filtered_frame && !(ost->filtered_frame = av_frame_alloc())) {
666 return AVERROR(ENOMEM);
667 }
668 filtered_frame = ost->filtered_frame;
669
670 if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
671 !(ost->enc->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE))
672 ret = av_buffersink_get_samples(ost->filter->filter, filtered_frame,
673 ost->enc_ctx->frame_size);
674 else
675 ret = av_buffersink_get_frame(ost->filter->filter, filtered_frame);
676
677 if (ret < 0)
678 return ret;
679
680 if (filtered_frame->pts != AV_NOPTS_VALUE) {
681 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
682 filtered_frame->pts = av_rescale_q(filtered_frame->pts,
683 ost->filter->filter->inputs[0]->time_base,
684 ost->enc_ctx->time_base) -
685 av_rescale_q(start_time,
686 AV_TIME_BASE_Q,
687 ost->enc_ctx->time_base);
688 }
689
690 switch (ost->filter->filter->inputs[0]->type) {
691 case AVMEDIA_TYPE_VIDEO:
692 if (!ost->frame_aspect_ratio)
693 ost->enc_ctx->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
694
695 do_video_out(of, ost, filtered_frame, &frame_size);
696 if (vstats_filename && frame_size)
697 do_video_stats(ost, frame_size);
698 break;
699 case AVMEDIA_TYPE_AUDIO:
700 do_audio_out(of, ost, filtered_frame);
701 break;
702 default:
703 // TODO support subtitle filters
704 av_assert0(0);
705 }
706
707 av_frame_unref(filtered_frame);
708
709 return 0;
710 }
711
712 static void finish_output_stream(OutputStream *ost)
713 {
714 OutputFile *of = output_files[ost->file_index];
715 int i;
716
717 ost->finished = 1;
718
719 if (of->shortest) {
720 for (i = 0; i < of->ctx->nb_streams; i++)
721 output_streams[of->ost_index + i]->finished = 1;
722 }
723 }
724
725 /*
726 * Read as many frames from possible from lavfi and encode them.
727 *
728 * Always read from the active stream with the lowest timestamp. If no frames
729 * are available for it then return EAGAIN and wait for more input. This way we
730 * can use lavfi sources that generate unlimited amount of frames without memory
731 * usage exploding.
732 */
733 static int poll_filters(void)
734 {
735 int i, ret = 0;
736
737 while (ret >= 0 && !received_sigterm) {
738 OutputStream *ost = NULL;
739 int64_t min_pts = INT64_MAX;
740
741 /* choose output stream with the lowest timestamp */
742 for (i = 0; i < nb_output_streams; i++) {
743 int64_t pts = output_streams[i]->sync_opts;
744
745 if (!output_streams[i]->filter || output_streams[i]->finished)
746 continue;
747
748 pts = av_rescale_q(pts, output_streams[i]->enc_ctx->time_base,
749 AV_TIME_BASE_Q);
750 if (pts < min_pts) {
751 min_pts = pts;
752 ost = output_streams[i];
753 }
754 }
755
756 if (!ost)
757 break;
758
759 ret = poll_filter(ost);
760
761 if (ret == AVERROR_EOF) {
762 finish_output_stream(ost);
763 ret = 0;
764 } else if (ret == AVERROR(EAGAIN))
765 return 0;
766 }
767
768 return ret;
769 }
770
771 static void print_final_stats(int64_t total_size)
772 {
773 uint64_t video_size = 0, audio_size = 0, extra_size = 0, other_size = 0;
774 uint64_t data_size = 0;
775 float percent = -1.0;
776 int i, j;
777
778 for (i = 0; i < nb_output_streams; i++) {
779 OutputStream *ost = output_streams[i];
780 switch (ost->enc_ctx->codec_type) {
781 case AVMEDIA_TYPE_VIDEO: video_size += ost->data_size; break;
782 case AVMEDIA_TYPE_AUDIO: audio_size += ost->data_size; break;
783 default: other_size += ost->data_size; break;
784 }
785 extra_size += ost->enc_ctx->extradata_size;
786 data_size += ost->data_size;
787 }
788
789 if (data_size && total_size >= data_size)
790 percent = 100.0 * (total_size - data_size) / data_size;
791
792 av_log(NULL, AV_LOG_INFO, "\n");
793 av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB other streams:%1.0fkB global headers:%1.0fkB muxing overhead: ",
794 video_size / 1024.0,
795 audio_size / 1024.0,
796 other_size / 1024.0,
797 extra_size / 1024.0);
798 if (percent >= 0.0)
799 av_log(NULL, AV_LOG_INFO, "%f%%", percent);
800 else
801 av_log(NULL, AV_LOG_INFO, "unknown");
802 av_log(NULL, AV_LOG_INFO, "\n");
803
804 /* print verbose per-stream stats */
805 for (i = 0; i < nb_input_files; i++) {
806 InputFile *f = input_files[i];
807 uint64_t total_packets = 0, total_size = 0;
808
809 av_log(NULL, AV_LOG_VERBOSE, "Input file #%d (%s):\n",
810 i, f->ctx->filename);
811
812 for (j = 0; j < f->nb_streams; j++) {
813 InputStream *ist = input_streams[f->ist_index + j];
814 enum AVMediaType type = ist->dec_ctx->codec_type;
815
816 total_size += ist->data_size;
817 total_packets += ist->nb_packets;
818
819 av_log(NULL, AV_LOG_VERBOSE, " Input stream #%d:%d (%s): ",
820 i, j, media_type_string(type));
821 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets read (%"PRIu64" bytes); ",
822 ist->nb_packets, ist->data_size);
823
824 if (ist->decoding_needed) {
825 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames decoded",
826 ist->frames_decoded);
827 if (type == AVMEDIA_TYPE_AUDIO)
828 av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ist->samples_decoded);
829 av_log(NULL, AV_LOG_VERBOSE, "; ");
830 }
831
832 av_log(NULL, AV_LOG_VERBOSE, "\n");
833 }
834
835 av_log(NULL, AV_LOG_VERBOSE, " Total: %"PRIu64" packets (%"PRIu64" bytes) demuxed\n",
836 total_packets, total_size);
837 }
838
839 for (i = 0; i < nb_output_files; i++) {
840 OutputFile *of = output_files[i];
841 uint64_t total_packets = 0, total_size = 0;
842
843 av_log(NULL, AV_LOG_VERBOSE, "Output file #%d (%s):\n",
844 i, of->ctx->filename);
845
846 for (j = 0; j < of->ctx->nb_streams; j++) {
847 OutputStream *ost = output_streams[of->ost_index + j];
848 enum AVMediaType type = ost->enc_ctx->codec_type;
849
850 total_size += ost->data_size;
851 total_packets += ost->packets_written;
852
853 av_log(NULL, AV_LOG_VERBOSE, " Output stream #%d:%d (%s): ",
854 i, j, media_type_string(type));
855 if (ost->encoding_needed) {
856 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames encoded",
857 ost->frames_encoded);
858 if (type == AVMEDIA_TYPE_AUDIO)
859 av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ost->samples_encoded);
860 av_log(NULL, AV_LOG_VERBOSE, "; ");
861 }
862
863 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets muxed (%"PRIu64" bytes); ",
864 ost->packets_written, ost->data_size);
865
866 av_log(NULL, AV_LOG_VERBOSE, "\n");
867 }
868
869 av_log(NULL, AV_LOG_VERBOSE, " Total: %"PRIu64" packets (%"PRIu64" bytes) muxed\n",
870 total_packets, total_size);
871 }
872 }
873
874 static void print_report(int is_last_report, int64_t timer_start)
875 {
876 char buf[1024];
877 OutputStream *ost;
878 AVFormatContext *oc;
879 int64_t total_size;
880 AVCodecContext *enc;
881 int frame_number, vid, i;
882 double bitrate, ti1, pts;
883 static int64_t last_time = -1;
884 static int qp_histogram[52];
885
886 if (!print_stats && !is_last_report)
887 return;
888
889 if (!is_last_report) {
890 int64_t cur_time;
891 /* display the report every 0.5 seconds */
892 cur_time = av_gettime_relative();
893 if (last_time == -1) {
894 last_time = cur_time;
895 return;
896 }
897 if ((cur_time - last_time) < 500000)
898 return;
899 last_time = cur_time;
900 }
901
902
903 oc = output_files[0]->ctx;
904
905 total_size = avio_size(oc->pb);
906 if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
907 total_size = avio_tell(oc->pb);
908 if (total_size < 0) {
909 char errbuf[128];
910 av_strerror(total_size, errbuf, sizeof(errbuf));
911 av_log(NULL, AV_LOG_VERBOSE, "Bitrate not available, "
912 "avio_tell() failed: %s\n", errbuf);
913 total_size = 0;
914 }
915
916 buf[0] = '\0';
917 ti1 = 1e10;
918 vid = 0;
919 for (i = 0; i < nb_output_streams; i++) {
920 float q = -1;
921 ost = output_streams[i];
922 enc = ost->enc_ctx;
923 if (!ost->stream_copy)
924 q = ost->quality / (float) FF_QP2LAMBDA;
925
926 if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
927 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
928 }
929 if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
930 float t = (av_gettime_relative() - timer_start) / 1000000.0;
931
932 frame_number = ost->frame_number;
933 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
934 frame_number, (t > 1) ? (int)(frame_number / t + 0.5) : 0, q);
935 if (is_last_report)
936 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
937 if (qp_hist) {
938 int j;
939 int qp = lrintf(q);
940 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
941 qp_histogram[qp]++;
942 for (j = 0; j < 32; j++)
943 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
944 }
945
946 #if FF_API_CODED_FRAME && FF_API_ERROR_FRAME
947 FF_DISABLE_DEPRECATION_WARNINGS
948 if (enc->flags & AV_CODEC_FLAG_PSNR) {
949 int j;
950 double error, error_sum = 0;
951 double scale, scale_sum = 0;
952 char type[3] = { 'Y','U','V' };
953 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
954 for (j = 0; j < 3; j++) {
955 if (is_last_report) {
956 error = enc->error[j];
957 scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
958 } else {
959 error = enc->coded_frame->error[j];
960 scale = enc->width * enc->height * 255.0 * 255.0;
961 }
962 if (j)
963 scale /= 4;
964 error_sum += error;
965 scale_sum += scale;
966 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
967 }
968 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
969 }
970 FF_ENABLE_DEPRECATION_WARNINGS
971 #endif
972 vid = 1;
973 }
974 /* compute min output value */
975 pts = (double)ost->last_mux_dts * av_q2d(ost->st->time_base);
976 if ((pts < ti1) && (pts > 0))
977 ti1 = pts;
978 }
979 if (ti1 < 0.01)
980 ti1 = 0.01;
981
982 bitrate = (double)(total_size * 8) / ti1 / 1000.0;
983
984 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
985 "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
986 (double)total_size / 1024, ti1, bitrate);
987
988 if (nb_frames_drop)
989 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " drop=%d",
990 nb_frames_drop);
991
992 av_log(NULL, AV_LOG_INFO, "%s \r", buf);
993
994 fflush(stderr);
995
996 if (is_last_report)
997 print_final_stats(total_size);
998
999 }
1000
1001 static void flush_encoders(void)
1002 {
1003 int i, ret;
1004
1005 for (i = 0; i < nb_output_streams; i++) {
1006 OutputStream *ost = output_streams[i];
1007 AVCodecContext *enc = ost->enc_ctx;
1008 OutputFile *of = output_files[ost->file_index];
1009 int stop_encoding = 0;
1010
1011 if (!ost->encoding_needed)
1012 continue;
1013
1014 if (enc->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1015 continue;
1016
1017 if (enc->codec_type != AVMEDIA_TYPE_VIDEO && enc->codec_type != AVMEDIA_TYPE_AUDIO)
1018 continue;
1019
1020 avcodec_send_frame(enc, NULL);
1021
1022 for (;;) {
1023 const char *desc = NULL;
1024
1025 switch (enc->codec_type) {
1026 case AVMEDIA_TYPE_AUDIO:
1027 desc = "Audio";
1028 break;
1029 case AVMEDIA_TYPE_VIDEO:
1030 desc = "Video";
1031 break;
1032 default:
1033 av_assert0(0);
1034 }
1035
1036 if (1) {
1037 AVPacket pkt;
1038 av_init_packet(&pkt);
1039 pkt.data = NULL;
1040 pkt.size = 0;
1041
1042 ret = avcodec_receive_packet(enc, &pkt);
1043 if (ret < 0 && ret != AVERROR_EOF) {
1044 av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1045 exit_program(1);
1046 }
1047 if (ost->logfile && enc->stats_out) {
1048 fprintf(ost->logfile, "%s", enc->stats_out);
1049 }
1050 if (ret == AVERROR_EOF) {
1051 stop_encoding = 1;
1052 break;
1053 }
1054 av_packet_rescale_ts(&pkt, enc->time_base, ost->st->time_base);
1055 output_packet(of, &pkt, ost);
1056 }
1057
1058 if (stop_encoding)
1059 break;
1060 }
1061 }
1062 }
1063
1064 /*
1065 * Check whether a packet from ist should be written into ost at this time
1066 */
1067 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1068 {
1069 OutputFile *of = output_files[ost->file_index];
1070 int ist_index = input_files[ist->file_index]->ist_index + ist->st->index;
1071
1072 if (ost->source_index != ist_index)
1073 return 0;
1074
1075 if (of->start_time != AV_NOPTS_VALUE && ist->last_dts < of->start_time)
1076 return 0;
1077
1078 return 1;
1079 }
1080
1081 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1082 {
1083 OutputFile *of = output_files[ost->file_index];
1084 InputFile *f = input_files [ist->file_index];
1085 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1086 int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1087 AVPacket opkt;
1088
1089 av_init_packet(&opkt);
1090
1091 if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1092 !ost->copy_initial_nonkeyframes)
1093 return;
1094
1095 if (of->recording_time != INT64_MAX &&
1096 ist->last_dts >= of->recording_time + start_time) {
1097 ost->finished = 1;
1098 return;
1099 }
1100
1101 if (f->recording_time != INT64_MAX) {
1102 start_time = f->ctx->start_time;
1103 if (f->start_time != AV_NOPTS_VALUE)
1104 start_time += f->start_time;
1105 if (ist->last_dts >= f->recording_time + start_time) {
1106 ost->finished = 1;
1107 return;
1108 }
1109 }
1110
1111 /* force the input stream PTS */
1112 if (ost->enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO)
1113 ost->sync_opts++;
1114
1115 if (pkt->pts != AV_NOPTS_VALUE)
1116 opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1117 else
1118 opkt.pts = AV_NOPTS_VALUE;
1119
1120 if (pkt->dts == AV_NOPTS_VALUE)
1121 opkt.dts = av_rescale_q(ist->last_dts, AV_TIME_BASE_Q, ost->st->time_base);
1122 else
1123 opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1124 opkt.dts -= ost_tb_start_time;
1125
1126 opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1127 opkt.flags = pkt->flags;
1128
1129 // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1130 if ( ost->enc_ctx->codec_id != AV_CODEC_ID_H264
1131 && ost->enc_ctx->codec_id != AV_CODEC_ID_MPEG1VIDEO
1132 && ost->enc_ctx->codec_id != AV_CODEC_ID_MPEG2VIDEO
1133 && ost->enc_ctx->codec_id != AV_CODEC_ID_VC1
1134 ) {
1135 if (av_parser_change(ost->parser, ost->parser_avctx,
1136 &opkt.data, &opkt.size,
1137 pkt->data, pkt->size,
1138 pkt->flags & AV_PKT_FLAG_KEY)) {
1139 opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1140 if (!opkt.buf)
1141 exit_program(1);
1142 }
1143 } else {
1144 opkt.data = pkt->data;
1145 opkt.size = pkt->size;
1146 }
1147
1148 output_packet(of, &opkt, ost);
1149 }
1150
1151 // This does not quite work like avcodec_decode_audio4/avcodec_decode_video2.
1152 // There is the following difference: if you got a frame, you must call
1153 // it again with pkt=NULL. pkt==NULL is treated differently from pkt.size==0
1154 // (pkt==NULL means get more output, pkt.size==0 is a flush/drain packet)
1155 static int decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *pkt)
1156 {
1157 int ret;
1158
1159 *got_frame = 0;
1160
1161 if (pkt) {
1162 ret = avcodec_send_packet(avctx, pkt);
1163 // In particular, we don't expect AVERROR(EAGAIN), because we read all
1164 // decoded frames with avcodec_receive_frame() until done.
1165 if (ret < 0)
1166 return ret == AVERROR_EOF ? 0 : ret;
1167 }
1168
1169 ret = avcodec_receive_frame(avctx, frame);
1170 if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
1171 return ret;
1172 if (ret >= 0)
1173 *got_frame = 1;
1174
1175 return 0;
1176 }
1177
1178 int guess_input_channel_layout(InputStream *ist)
1179 {
1180 AVCodecContext *dec = ist->dec_ctx;
1181
1182 if (!dec->channel_layout) {
1183 char layout_name[256];
1184
1185 dec->channel_layout = av_get_default_channel_layout(dec->channels);
1186 if (!dec->channel_layout)
1187 return 0;
1188 av_get_channel_layout_string(layout_name, sizeof(layout_name),
1189 dec->channels, dec->channel_layout);
1190 av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for Input Stream "
1191 "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1192 }
1193 return 1;
1194 }
1195
1196 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1197 {
1198 AVFrame *decoded_frame, *f;
1199 AVCodecContext *avctx = ist->dec_ctx;
1200 int i, ret, err = 0, resample_changed;
1201
1202 if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1203 return AVERROR(ENOMEM);
1204 if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1205 return AVERROR(ENOMEM);
1206 decoded_frame = ist->decoded_frame;
1207
1208 ret = decode(avctx, decoded_frame, got_output, pkt);
1209 if (!*got_output || ret < 0)
1210 return ret;
1211
1212 ist->samples_decoded += decoded_frame->nb_samples;
1213 ist->frames_decoded++;
1214
1215 /* if the decoder provides a pts, use it instead of the last packet pts.
1216 the decoder could be delaying output by a packet or more. */
1217 if (decoded_frame->pts != AV_NOPTS_VALUE)
1218 ist->next_dts = decoded_frame->pts;
1219 else if (pkt && pkt->pts != AV_NOPTS_VALUE) {
1220 decoded_frame->pts = pkt->pts;
1221 }
1222
1223 resample_changed = ist->resample_sample_fmt != decoded_frame->format ||
1224 ist->resample_channels != avctx->channels ||
1225 ist->resample_channel_layout != decoded_frame->channel_layout ||
1226 ist->resample_sample_rate != decoded_frame->sample_rate;
1227 if (resample_changed) {
1228 char layout1[64], layout2[64];
1229
1230 if (!guess_input_channel_layout(ist)) {
1231 av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1232 "layout for Input Stream #%d.%d\n", ist->file_index,
1233 ist->st->index);
1234 exit_program(1);
1235 }
1236 decoded_frame->channel_layout = avctx->channel_layout;
1237
1238 av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1239 ist->resample_channel_layout);
1240 av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1241 decoded_frame->channel_layout);
1242
1243 av_log(NULL, AV_LOG_INFO,
1244 "Input stream #%d:%d frame changed from rate:%d fmt:%s ch:%d chl:%s to rate:%d fmt:%s ch:%d chl:%s\n",
1245 ist->file_index, ist->st->index,
1246 ist->resample_sample_rate, av_get_sample_fmt_name(ist->resample_sample_fmt),
1247 ist->resample_channels, layout1,
1248 decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1249 avctx->channels, layout2);
1250
1251 ist->resample_sample_fmt = decoded_frame->format;
1252 ist->resample_sample_rate = decoded_frame->sample_rate;
1253 ist->resample_channel_layout = decoded_frame->channel_layout;
1254 ist->resample_channels = avctx->channels;
1255
1256 for (i = 0; i < ist->nb_filters; i++) {
1257 err = ifilter_parameters_from_frame(ist->filters[i], decoded_frame);
1258 if (err < 0) {
1259 av_log(NULL, AV_LOG_ERROR,
1260 "Error reconfiguring input stream %d:%d filter %d\n",
1261 ist->file_index, ist->st->index, i);
1262 goto fail;
1263 }
1264 }
1265
1266 for (i = 0; i < nb_filtergraphs; i++)
1267 if (ist_in_filtergraph(filtergraphs[i], ist) &&
1268 configure_filtergraph(filtergraphs[i]) < 0) {
1269 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1270 exit_program(1);
1271 }
1272 }
1273
1274 if (decoded_frame->pts != AV_NOPTS_VALUE)
1275 decoded_frame->pts = av_rescale_q(decoded_frame->pts,
1276 ist->st->time_base,
1277 (AVRational){1, avctx->sample_rate});
1278 ist->nb_samples = decoded_frame->nb_samples;
1279 for (i = 0; i < ist->nb_filters; i++) {
1280 if (i < ist->nb_filters - 1) {
1281 f = ist->filter_frame;
1282 err = av_frame_ref(f, decoded_frame);
1283 if (err < 0)
1284 break;
1285 } else
1286 f = decoded_frame;
1287
1288 err = av_buffersrc_add_frame(ist->filters[i]->filter, f);
1289 if (err < 0)
1290 break;
1291 }
1292
1293 fail:
1294 av_frame_unref(ist->filter_frame);
1295 av_frame_unref(decoded_frame);
1296 return err < 0 ? err : ret;
1297 }
1298
1299 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1300 {
1301 AVFrame *decoded_frame, *f;
1302 int i, ret = 0, err = 0, resample_changed;
1303
1304 if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1305 return AVERROR(ENOMEM);
1306 if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1307 return AVERROR(ENOMEM);
1308 decoded_frame = ist->decoded_frame;
1309
1310 ret = decode(ist->dec_ctx, decoded_frame, got_output, pkt);
1311 if (!*got_output || ret < 0)
1312 return ret;
1313
1314 ist->frames_decoded++;
1315
1316 if (ist->hwaccel_retrieve_data && decoded_frame->format == ist->hwaccel_pix_fmt) {
1317 err = ist->hwaccel_retrieve_data(ist->dec_ctx, decoded_frame);
1318 if (err < 0)
1319 goto fail;
1320 }
1321 ist->hwaccel_retrieved_pix_fmt = decoded_frame->format;
1322
1323 decoded_frame->pts = guess_correct_pts(&ist->pts_ctx, decoded_frame->pts,
1324 decoded_frame->pkt_dts);
1325
1326 if (ist->st->sample_aspect_ratio.num)
1327 decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1328
1329 resample_changed = ist->resample_width != decoded_frame->width ||
1330 ist->resample_height != decoded_frame->height ||
1331 ist->resample_pix_fmt != decoded_frame->format;
1332 if (resample_changed) {
1333 av_log(NULL, AV_LOG_INFO,
1334 "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1335 ist->file_index, ist->st->index,
1336 ist->resample_width, ist->resample_height, av_get_pix_fmt_name(ist->resample_pix_fmt),
1337 decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1338
1339 ret = poll_filters();
1340 if (ret < 0 && ret != AVERROR_EOF) {
1341 char errbuf[128];
1342 av_strerror(ret, errbuf, sizeof(errbuf));
1343
1344 av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n", errbuf);
1345 }
1346
1347 ist->resample_width = decoded_frame->width;
1348 ist->resample_height = decoded_frame->height;
1349 ist->resample_pix_fmt = decoded_frame->format;
1350
1351 for (i = 0; i < ist->nb_filters; i++) {
1352 err = ifilter_parameters_from_frame(ist->filters[i], decoded_frame);
1353 if (err < 0) {
1354 av_log(NULL, AV_LOG_ERROR,
1355 "Error reconfiguring input stream %d:%d filter %d\n",
1356 ist->file_index, ist->st->index, i);
1357 goto fail;
1358 }
1359 }
1360
1361 for (i = 0; i < nb_filtergraphs; i++)
1362 if (ist_in_filtergraph(filtergraphs[i], ist) &&
1363 configure_filtergraph(filtergraphs[i]) < 0) {
1364 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1365 exit_program(1);
1366 }
1367 }
1368
1369 for (i = 0; i < ist->nb_filters; i++) {
1370 if (i < ist->nb_filters - 1) {
1371 f = ist->filter_frame;
1372 err = av_frame_ref(f, decoded_frame);
1373 if (err < 0)
1374 break;
1375 } else
1376 f = decoded_frame;
1377
1378 err = av_buffersrc_add_frame(ist->filters[i]->filter, f);
1379 if (err < 0)
1380 break;
1381 }
1382
1383 fail:
1384 av_frame_unref(ist->filter_frame);
1385 av_frame_unref(decoded_frame);
1386 return err < 0 ? err : ret;
1387 }
1388
1389 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1390 {
1391 AVSubtitle subtitle;
1392 int i, ret = avcodec_decode_subtitle2(ist->dec_ctx,
1393 &subtitle, got_output, pkt);
1394 if (ret < 0)
1395 return ret;
1396 if (!*got_output)
1397 return ret;
1398
1399 ist->frames_decoded++;
1400
1401 for (i = 0; i < nb_output_streams; i++) {
1402 OutputStream *ost = output_streams[i];
1403
1404 if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1405 continue;
1406
1407 do_subtitle_out(output_files[ost->file_index], ost, ist, &subtitle, pkt->pts);
1408 }
1409
1410 avsubtitle_free(&subtitle);
1411 return ret;
1412 }
1413
1414 static int send_filter_eof(InputStream *ist)
1415 {
1416 int i, ret;
1417 for (i = 0; i < ist->nb_filters; i++) {
1418 ret = av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1419 if (ret < 0)
1420 return ret;
1421 }
1422 return 0;
1423 }
1424
1425 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1426 static void process_input_packet(InputStream *ist, const AVPacket *pkt, int no_eof)
1427 {
1428 int i;
1429 int repeating = 0;
1430 AVPacket avpkt;
1431
1432 if (ist->next_dts == AV_NOPTS_VALUE)
1433 ist->next_dts = ist->last_dts;
1434
1435 if (!pkt) {
1436 /* EOF handling */
1437 av_init_packet(&avpkt);
1438 avpkt.data = NULL;
1439 avpkt.size = 0;
1440 } else {
1441 avpkt = *pkt;
1442 }
1443
1444 if (pkt && pkt->dts != AV_NOPTS_VALUE)
1445 ist->next_dts = ist->last_dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1446
1447 // while we have more to decode or while the decoder did output something on EOF
1448 while (ist->decoding_needed && (!pkt || avpkt.size > 0)) {
1449 int ret = 0;
1450 int got_output = 0;
1451
1452 if (!repeating)
1453 ist->last_dts = ist->next_dts;
1454
1455 switch (ist->dec_ctx->codec_type) {
1456 case AVMEDIA_TYPE_AUDIO:
1457 ret = decode_audio (ist, repeating ? NULL : &avpkt, &got_output);
1458 break;
1459 case AVMEDIA_TYPE_VIDEO:
1460 ret = decode_video (ist, repeating ? NULL : &avpkt, &got_output);
1461 if (repeating && !got_output)
1462 ;
1463 else if (pkt && pkt->duration)
1464 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1465 else if (ist->st->avg_frame_rate.num)
1466 ist->next_dts += av_rescale_q(1, av_inv_q(ist->st->avg_frame_rate),
1467 AV_TIME_BASE_Q);
1468 else if (ist->dec_ctx->framerate.num != 0) {
1469 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 :
1470 ist->dec_ctx->ticks_per_frame;
1471 ist->next_dts += av_rescale_q(ticks, ist->dec_ctx->framerate, AV_TIME_BASE_Q);
1472 }
1473 break;
1474 case AVMEDIA_TYPE_SUBTITLE:
1475 if (repeating)
1476 break;
1477 ret = transcode_subtitles(ist, &avpkt, &got_output);
1478 break;
1479 default:
1480 return;
1481 }
1482
1483 if (ret < 0) {
1484 av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
1485 ist->file_index, ist->st->index);
1486 if (exit_on_error)
1487 exit_program(1);
1488 break;
1489 }
1490
1491 if (!got_output)
1492 break;
1493
1494 repeating = 1;
1495 }
1496
1497 /* after flushing, send an EOF on all the filter inputs attached to the stream */
1498 /* except when looping we need to flush but not to send an EOF */
1499 if (!pkt && ist->decoding_needed && !no_eof) {
1500 int ret = send_filter_eof(ist);
1501 if (ret < 0) {
1502 av_log(NULL, AV_LOG_FATAL, "Error marking filters as finished\n");
1503 exit_program(1);
1504 }
1505 }
1506
1507 /* handle stream copy */
1508 if (!ist->decoding_needed) {
1509 ist->last_dts = ist->next_dts;
1510 switch (ist->dec_ctx->codec_type) {
1511 case AVMEDIA_TYPE_AUDIO:
1512 ist->next_dts += ((int64_t)AV_TIME_BASE * ist->dec_ctx->frame_size) /
1513 ist->dec_ctx->sample_rate;
1514 break;
1515 case AVMEDIA_TYPE_VIDEO:
1516 if (ist->dec_ctx->framerate.num != 0) {
1517 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->dec_ctx->ticks_per_frame;
1518 ist->next_dts += ((int64_t)AV_TIME_BASE *
1519 ist->dec_ctx->framerate.den * ticks) /
1520 ist->dec_ctx->framerate.num;
1521 }
1522 break;
1523 }
1524 }
1525 for (i = 0; pkt && i < nb_output_streams; i++) {
1526 OutputStream *ost = output_streams[i];
1527
1528 if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1529 continue;
1530
1531 do_streamcopy(ist, ost, pkt);
1532 }
1533
1534 return;
1535 }
1536
1537 static void print_sdp(void)
1538 {
1539 char sdp[16384];
1540 int i;
1541 AVFormatContext **avc;
1542
1543 for (i = 0; i < nb_output_files; i++) {
1544 if (!output_files[i]->header_written)
1545 return;
1546 }
1547
1548 avc = av_malloc(sizeof(*avc) * nb_output_files);
1549 if (!avc)
1550 exit_program(1);
1551 for (i = 0; i < nb_output_files; i++)
1552 avc[i] = output_files[i]->ctx;
1553
1554 av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1555 printf("SDP:\n%s\n", sdp);
1556 fflush(stdout);
1557 av_freep(&avc);
1558 }
1559
1560 static const HWAccel *get_hwaccel(enum AVPixelFormat pix_fmt)
1561 {
1562 int i;
1563 for (i = 0; hwaccels[i].name; i++)
1564 if (hwaccels[i].pix_fmt == pix_fmt)
1565 return &hwaccels[i];
1566 return NULL;
1567 }
1568
1569 static enum AVPixelFormat get_format(AVCodecContext *s, const enum AVPixelFormat *pix_fmts)
1570 {
1571 InputStream *ist = s->opaque;
1572 const enum AVPixelFormat *p;
1573 int ret;
1574
1575 for (p = pix_fmts; *p != -1; p++) {
1576 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(*p);
1577 const HWAccel *hwaccel;
1578
1579 if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
1580 break;
1581
1582 hwaccel = get_hwaccel(*p);
1583 if (!hwaccel ||
1584 (ist->active_hwaccel_id && ist->active_hwaccel_id != hwaccel->id) ||
1585 (ist->hwaccel_id != HWACCEL_AUTO && ist->hwaccel_id != hwaccel->id))
1586 continue;
1587
1588 ret = hwaccel->init(s);
1589 if (ret < 0) {
1590 if (ist->hwaccel_id == hwaccel->id) {
1591 av_log(NULL, AV_LOG_FATAL,
1592 "%s hwaccel requested for input stream #%d:%d, "
1593 "but cannot be initialized.\n", hwaccel->name,
1594 ist->file_index, ist->st->index);
1595 return AV_PIX_FMT_NONE;
1596 }
1597 continue;
1598 }
1599 ist->active_hwaccel_id = hwaccel->id;
1600 ist->hwaccel_pix_fmt = *p;
1601 break;
1602 }
1603
1604 return *p;
1605 }
1606
1607 static int get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
1608 {
1609 InputStream *ist = s->opaque;
1610
1611 if (ist->hwaccel_get_buffer && frame->format == ist->hwaccel_pix_fmt)
1612 return ist->hwaccel_get_buffer(s, frame, flags);
1613
1614 return avcodec_default_get_buffer2(s, frame, flags);
1615 }
1616
1617 static int init_input_stream(int ist_index, char *error, int error_len)
1618 {
1619 int i, ret;
1620 InputStream *ist = input_streams[ist_index];
1621
1622 for (i = 0; i < ist->nb_filters; i++) {
1623 ret = ifilter_parameters_from_decoder(ist->filters[i], ist->dec_ctx);
1624 if (ret < 0) {
1625 av_log(NULL, AV_LOG_FATAL, "Error initializing filter input\n");
1626 return ret;
1627 }
1628 }
1629
1630 if (ist->decoding_needed) {
1631 AVCodec *codec = ist->dec;
1632 if (!codec) {
1633 snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d:%d",
1634 ist->dec_ctx->codec_id, ist->file_index, ist->st->index);
1635 return AVERROR(EINVAL);
1636 }
1637
1638 ist->dec_ctx->opaque = ist;
1639 ist->dec_ctx->get_format = get_format;
1640 ist->dec_ctx->get_buffer2 = get_buffer;
1641 ist->dec_ctx->thread_safe_callbacks = 1;
1642
1643 av_opt_set_int(ist->dec_ctx, "refcounted_frames", 1, 0);
1644
1645 if (!av_dict_get(ist->decoder_opts, "threads", NULL, 0))
1646 av_dict_set(&ist->decoder_opts, "threads", "auto", 0);
1647 if ((ret = avcodec_open2(ist->dec_ctx, codec, &ist->decoder_opts)) < 0) {
1648 char errbuf[128];
1649 if (ret == AVERROR_EXPERIMENTAL)
1650 abort_codec_experimental(codec, 0);
1651
1652 av_strerror(ret, errbuf, sizeof(errbuf));
1653
1654 snprintf(error, error_len,
1655 "Error while opening decoder for input stream "
1656 "#%d:%d : %s",
1657 ist->file_index, ist->st->index, errbuf);
1658 return ret;
1659 }
1660 assert_avoptions(ist->decoder_opts);
1661 }
1662
1663 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;
1664 ist->next_dts = AV_NOPTS_VALUE;
1665 init_pts_correction(&ist->pts_ctx);
1666
1667 return 0;
1668 }
1669
1670 static InputStream *get_input_stream(OutputStream *ost)
1671 {
1672 if (ost->source_index >= 0)
1673 return input_streams[ost->source_index];
1674
1675 if (ost->filter) {
1676 FilterGraph *fg = ost->filter->graph;
1677 int i;
1678
1679 for (i = 0; i < fg->nb_inputs; i++)
1680 if (fg->inputs[i]->ist->dec_ctx->codec_type == ost->enc_ctx->codec_type)
1681 return fg->inputs[i]->ist;
1682 }
1683
1684 return NULL;
1685 }
1686
1687 /* open the muxer when all the streams are initialized */
1688 static int check_init_output_file(OutputFile *of, int file_index)
1689 {
1690 int ret, i;
1691
1692 for (i = 0; i < of->ctx->nb_streams; i++) {
1693 OutputStream *ost = output_streams[of->ost_index + i];
1694 if (!ost->initialized)
1695 return 0;
1696 }
1697
1698 of->ctx->interrupt_callback = int_cb;
1699
1700 ret = avformat_write_header(of->ctx, &of->opts);
1701 if (ret < 0) {
1702 char errbuf[128];
1703
1704 av_strerror(ret, errbuf, sizeof(errbuf));
1705
1706 av_log(NULL, AV_LOG_ERROR,
1707 "Could not write header for output file #%d "
1708 "(incorrect codec parameters ?): %s",
1709 file_index, errbuf);
1710 return ret;
1711 }
1712 assert_avoptions(of->opts);
1713 of->header_written = 1;
1714
1715 av_dump_format(of->ctx, file_index, of->ctx->filename, 1);
1716
1717 if (want_sdp)
1718 print_sdp();
1719
1720 /* flush the muxing queues */
1721 for (i = 0; i < of->ctx->nb_streams; i++) {
1722 OutputStream *ost = output_streams[of->ost_index + i];
1723
1724 while (av_fifo_size(ost->muxing_queue)) {
1725 AVPacket pkt;
1726 av_fifo_generic_read(ost->muxing_queue, &pkt, sizeof(pkt), NULL);
1727 write_packet(of, &pkt, ost);
1728 }
1729 }
1730
1731 return 0;
1732 }
1733
1734 static int init_output_bsfs(OutputStream *ost)
1735 {
1736 AVBSFContext *ctx;
1737 int i, ret;
1738
1739 if (!ost->nb_bitstream_filters)
1740 return 0;
1741
1742 ost->bsf_ctx = av_mallocz_array(ost->nb_bitstream_filters, sizeof(*ost->bsf_ctx));
1743 if (!ost->bsf_ctx)
1744 return AVERROR(ENOMEM);
1745
1746 for (i = 0; i < ost->nb_bitstream_filters; i++) {
1747 ret = av_bsf_alloc(ost->bitstream_filters[i], &ctx);
1748 if (ret < 0) {
1749 av_log(NULL, AV_LOG_ERROR, "Error allocating a bitstream filter context\n");
1750 return ret;
1751 }
1752 ost->bsf_ctx[i] = ctx;
1753
1754 ret = avcodec_parameters_copy(ctx->par_in,
1755 i ? ost->bsf_ctx[i - 1]->par_out : ost->st->codecpar);
1756 if (ret < 0)
1757 return ret;
1758
1759 ctx->time_base_in = i ? ost->bsf_ctx[i - 1]->time_base_out : ost->st->time_base;
1760
1761 ret = av_bsf_init(ctx);
1762 if (ret < 0) {
1763 av_log(NULL, AV_LOG_ERROR, "Error initializing bitstream filter: %s\n",
1764 ost->bitstream_filters[i]->name);
1765 return ret;
1766 }
1767 }
1768
1769 ctx = ost->bsf_ctx[ost->nb_bitstream_filters - 1];
1770 ret = avcodec_parameters_copy(ost->st->codecpar, ctx->par_out);
1771 if (ret < 0)
1772 return ret;
1773
1774 ost->st->time_base = ctx->time_base_out;
1775
1776 return 0;
1777 }
1778
1779 static int init_output_stream_streamcopy(OutputStream *ost)
1780 {
1781 OutputFile *of = output_files[ost->file_index];
1782 InputStream *ist = get_input_stream(ost);
1783 AVCodecParameters *par_dst = ost->st->codecpar;
1784 AVCodecParameters *par_src = ist->st->codecpar;
1785 AVRational sar;
1786 int i;
1787 uint64_t extra_size;
1788
1789 extra_size = (uint64_t)par_src->extradata_size + AV_INPUT_BUFFER_PADDING_SIZE;
1790 if (extra_size > INT_MAX) {
1791 return AVERROR(EINVAL);
1792 }
1793
1794 ost->st->disposition = ist->st->disposition;
1795
1796 /* if stream_copy is selected, no need to decode or encode */
1797 par_dst->codec_id = par_src->codec_id;
1798 par_dst->codec_type = par_src->codec_type;
1799
1800 if (!par_dst->codec_tag) {
1801 if (!of->ctx->oformat->codec_tag ||
1802 av_codec_get_id (of->ctx->oformat->codec_tag, par_src->codec_tag) == par_dst->codec_id ||
1803 av_codec_get_tag(of->ctx->oformat->codec_tag, par_src->codec_id) <= 0)
1804 par_dst->codec_tag = par_src->codec_tag;
1805 }
1806
1807 par_dst->bit_rate = par_src->bit_rate;
1808 par_dst->field_order = par_src->field_order;
1809 par_dst->chroma_location = par_src->chroma_location;
1810
1811 if (par_src->extradata) {
1812 par_dst->extradata = av_mallocz(extra_size);
1813 if (!par_dst->extradata) {
1814 return AVERROR(ENOMEM);
1815 }
1816 memcpy(par_dst->extradata, par_src->extradata, par_src->extradata_size);
1817 par_dst->extradata_size = par_src->extradata_size;
1818 }
1819
1820 ost->st->time_base = ist->st->time_base;
1821
1822 if (ist->st->nb_side_data) {
1823 ost->st->side_data = av_realloc_array(NULL, ist->st->nb_side_data,
1824 sizeof(*ist->st->side_data));
1825 if (!ost->st->side_data)
1826 return AVERROR(ENOMEM);
1827
1828 for (i = 0; i < ist->st->nb_side_data; i++) {
1829 const AVPacketSideData *sd_src = &ist->st->side_data[i];
1830 AVPacketSideData *sd_dst = &ost->st->side_data[i];
1831
1832 sd_dst->data = av_malloc(sd_src->size);
1833 if (!sd_dst->data)
1834 return AVERROR(ENOMEM);
1835 memcpy(sd_dst->data, sd_src->data, sd_src->size);
1836 sd_dst->size = sd_src->size;
1837 sd_dst->type = sd_src->type;
1838 ost->st->nb_side_data++;
1839 }
1840 }
1841
1842 ost->parser = av_parser_init(par_dst->codec_id);
1843 ost->parser_avctx = avcodec_alloc_context3(NULL);
1844 if (!ost->parser_avctx)
1845 return AVERROR(ENOMEM);
1846
1847 switch (par_dst->codec_type) {
1848 case AVMEDIA_TYPE_AUDIO:
1849 if (audio_volume != 256) {
1850 av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
1851 exit_program(1);
1852 }
1853 par_dst->channel_layout = par_src->channel_layout;
1854 par_dst->sample_rate = par_src->sample_rate;
1855 par_dst->channels = par_src->channels;
1856 par_dst->block_align = par_src->block_align;
1857 break;
1858 case AVMEDIA_TYPE_VIDEO:
1859 par_dst->format = par_src->format;
1860 par_dst->width = par_src->width;
1861 par_dst->height = par_src->height;
1862 if (ost->frame_aspect_ratio)
1863 sar = av_d2q(ost->frame_aspect_ratio * par_dst->height / par_dst->width, 255);
1864 else if (ist->st->sample_aspect_ratio.num)
1865 sar = ist->st->sample_aspect_ratio;
1866 else
1867 sar = par_src->sample_aspect_ratio;
1868 ost->st->sample_aspect_ratio = par_dst->sample_aspect_ratio = sar;
1869 break;
1870 case AVMEDIA_TYPE_SUBTITLE:
1871 par_dst->width = par_src->width;
1872 par_dst->height = par_src->height;
1873 break;
1874 case AVMEDIA_TYPE_DATA:
1875 case AVMEDIA_TYPE_ATTACHMENT:
1876 break;
1877 default:
1878 abort();
1879 }
1880
1881 return 0;
1882 }
1883
1884 static void set_encoder_id(OutputFile *of, OutputStream *ost)
1885 {
1886 AVDictionaryEntry *e;
1887
1888 uint8_t *encoder_string;
1889 int encoder_string_len;
1890 int format_flags = 0;
1891
1892 e = av_dict_get(of->opts, "fflags", NULL, 0);
1893 if (e) {
1894 const AVOption *o = av_opt_find(of->ctx, "fflags", NULL, 0, 0);
1895 if (!o)
1896 return;
1897 av_opt_eval_flags(of->ctx, o, e->value, &format_flags);
1898 }
1899
1900 encoder_string_len = sizeof(LIBAVCODEC_IDENT) + strlen(ost->enc->name) + 2;
1901 encoder_string = av_mallocz(encoder_string_len);
1902 if (!encoder_string)
1903 exit_program(1);
1904
1905 if (!(format_flags & AVFMT_FLAG_BITEXACT))
1906 av_strlcpy(encoder_string, LIBAVCODEC_IDENT " ", encoder_string_len);
1907 av_strlcat(encoder_string, ost->enc->name, encoder_string_len);
1908 av_dict_set(&ost->st->metadata, "encoder", encoder_string,
1909 AV_DICT_DONT_STRDUP_VAL | AV_DICT_DONT_OVERWRITE);
1910 }
1911
1912 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1913 AVCodecContext *avctx)
1914 {
1915 char *p;
1916 int n = 1, i;
1917 int64_t t;
1918
1919 for (p = kf; *p; p++)
1920 if (*p == ',')
1921 n++;
1922 ost->forced_kf_count = n;
1923 ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1924 if (!ost->forced_kf_pts) {
1925 av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1926 exit_program(1);
1927 }
1928
1929 p = kf;
1930 for (i = 0; i < n; i++) {
1931 char *next = strchr(p, ',');
1932
1933 if (next)
1934 *next++ = 0;
1935
1936 t = parse_time_or_die("force_key_frames", p, 1);
1937 ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1938
1939 p = next;
1940 }
1941 }
1942
1943 static int init_output_stream_encode(OutputStream *ost)
1944 {
1945 InputStream *ist = get_input_stream(ost);
1946 AVCodecContext *enc_ctx = ost->enc_ctx;
1947 AVCodecContext *dec_ctx = NULL;
1948
1949 set_encoder_id(output_files[ost->file_index], ost);
1950
1951 if (ist) {
1952 ost->st->disposition = ist->st->disposition;
1953
1954 dec_ctx = ist->dec_ctx;
1955
1956 enc_ctx->bits_per_raw_sample = dec_ctx->bits_per_raw_sample;
1957 enc_ctx->chroma_sample_location = dec_ctx->chroma_sample_location;
1958 }
1959
1960 if ((enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
1961 enc_ctx->codec_type == AVMEDIA_TYPE_AUDIO) &&
1962 filtergraph_is_simple(ost->filter->graph)) {
1963 FilterGraph *fg = ost->filter->graph;
1964
1965 if (configure_filtergraph(fg)) {
1966 av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
1967 exit_program(1);
1968 }
1969 }
1970
1971 switch (enc_ctx->codec_type) {
1972 case AVMEDIA_TYPE_AUDIO:
1973 enc_ctx->sample_fmt = ost->filter->filter->inputs[0]->format;
1974 enc_ctx->sample_rate = ost->filter->filter->inputs[0]->sample_rate;
1975 enc_ctx->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
1976 enc_ctx->channels = av_get_channel_layout_nb_channels(enc_ctx->channel_layout);
1977 enc_ctx->time_base = (AVRational){ 1, enc_ctx->sample_rate };
1978 break;
1979 case AVMEDIA_TYPE_VIDEO:
1980 enc_ctx->time_base = ost->filter->filter->inputs[0]->time_base;
1981
1982 enc_ctx->width = ost->filter->filter->inputs[0]->w;
1983 enc_ctx->height = ost->filter->filter->inputs[0]->h;
1984 enc_ctx->sample_aspect_ratio = ost->st->sample_aspect_ratio =
1985 ost->frame_aspect_ratio ? // overridden by the -aspect cli option
1986 av_d2q(ost->frame_aspect_ratio * enc_ctx->height/enc_ctx->width, 255) :
1987 ost->filter->filter->inputs[0]->sample_aspect_ratio;
1988 enc_ctx->pix_fmt = ost->filter->filter->inputs[0]->format;
1989
1990 ost->st->avg_frame_rate = ost->frame_rate;
1991
1992 if (dec_ctx &&
1993 (enc_ctx->width != dec_ctx->width ||
1994 enc_ctx->height != dec_ctx->height ||
1995 enc_ctx->pix_fmt != dec_ctx->pix_fmt)) {
1996 enc_ctx->bits_per_raw_sample = 0;
1997 }
1998
1999 if (ost->forced_keyframes)
2000 parse_forced_key_frames(ost->forced_keyframes, ost,
2001 ost->enc_ctx);
2002 break;
2003 case AVMEDIA_TYPE_SUBTITLE:
2004 enc_ctx->time_base = (AVRational){1, 1000};
2005 break;
2006 default:
2007 abort();
2008 break;
2009 }
2010
2011 return 0;
2012 }
2013
2014 static int init_output_stream(OutputStream *ost, char *error, int error_len)
2015 {
2016 int ret = 0;
2017
2018 if (ost->encoding_needed) {
2019 AVCodec *codec = ost->enc;
2020 AVCodecContext *dec = NULL;
2021 InputStream *ist;
2022
2023 ret = init_output_stream_encode(ost);
2024 if (ret < 0)
2025 return ret;
2026
2027 if ((ist = get_input_stream(ost)))
2028 dec = ist->dec_ctx;
2029 if (dec && dec->subtitle_header) {
2030 ost->enc_ctx->subtitle_header = av_malloc(dec->subtitle_header_size);
2031 if (!ost->enc_ctx->subtitle_header)
2032 return AVERROR(ENOMEM);
2033 memcpy(ost->enc_ctx->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2034 ost->enc_ctx->subtitle_header_size = dec->subtitle_header_size;
2035 }
2036 if (!av_dict_get(ost->encoder_opts, "threads", NULL, 0))
2037 av_dict_set(&ost->encoder_opts, "threads", "auto", 0);
2038
2039 if (ost->filter && ost->filter->filter->inputs[0]->hw_frames_ctx) {
2040 ost->enc_ctx->hw_frames_ctx = av_buffer_ref(ost->filter->filter->inputs[0]->hw_frames_ctx);
2041 if (!ost->enc_ctx->hw_frames_ctx)
2042 return AVERROR(ENOMEM);
2043 }
2044
2045 if ((ret = avcodec_open2(ost->enc_ctx, codec, &ost->encoder_opts)) < 0) {
2046 if (ret == AVERROR_EXPERIMENTAL)
2047 abort_codec_experimental(codec, 1);
2048 snprintf(error, error_len,
2049 "Error while opening encoder for output stream #%d:%d - "
2050 "maybe incorrect parameters such as bit_rate, rate, width or height",
2051 ost->file_index, ost->index);
2052 return ret;
2053 }
2054 assert_avoptions(ost->encoder_opts);
2055 if (ost->enc_ctx->bit_rate && ost->enc_ctx->bit_rate < 1000)
2056 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2057 "It takes bits/s as argument, not kbits/s\n");
2058
2059 ret = avcodec_parameters_from_context(ost->st->codecpar, ost->enc_ctx);
2060 if (ret < 0) {
2061 av_log(NULL, AV_LOG_FATAL,
2062 "Error initializing the output stream codec context.\n");
2063 exit_program(1);
2064 }
2065
2066 if (ost->enc_ctx->nb_coded_side_data) {
2067 int i;
2068
2069 ost->st->side_data = av_realloc_array(NULL, ost->enc_ctx->nb_coded_side_data,
2070 sizeof(*ost->st->side_data));
2071 if (!ost->st->side_data)
2072 return AVERROR(ENOMEM);
2073
2074 for (i = 0; i < ost->enc_ctx->nb_coded_side_data; i++) {
2075 const AVPacketSideData *sd_src = &ost->enc_ctx->coded_side_data[i];
2076 AVPacketSideData *sd_dst = &ost->st->side_data[i];
2077
2078 sd_dst->data = av_malloc(sd_src->size);
2079 if (!sd_dst->data)
2080 return AVERROR(ENOMEM);
2081 memcpy(sd_dst->data, sd_src->data, sd_src->size);
2082 sd_dst->size = sd_src->size;
2083 sd_dst->type = sd_src->type;
2084 ost->st->nb_side_data++;
2085 }
2086 }
2087
2088 ost->st->time_base = ost->enc_ctx->time_base;
2089 } else if (ost->stream_copy) {
2090 ret = init_output_stream_streamcopy(ost);
2091 if (ret < 0)
2092 return ret;
2093
2094 /*
2095 * FIXME: will the codec context used by the parser during streamcopy
2096 * This should go away with the new parser API.
2097 */
2098 ret = avcodec_parameters_to_context(ost->parser_avctx, ost->st->codecpar);
2099 if (ret < 0)
2100 return ret;
2101 }
2102
2103 /* initialize bitstream filters for the output stream
2104 * needs to be done here, because the codec id for streamcopy is not
2105 * known until now */
2106 ret = init_output_bsfs(ost);
2107 if (ret < 0)
2108 return ret;
2109
2110 ost->initialized = 1;
2111
2112 ret = check_init_output_file(output_files[ost->file_index], ost->file_index);
2113 if (ret < 0)
2114 return ret;
2115
2116 return ret;
2117 }
2118
2119 static int transcode_init(void)
2120 {
2121 int ret = 0, i, j, k;
2122 OutputStream *ost;
2123 InputStream *ist;
2124 char error[1024];
2125
2126 /* init framerate emulation */
2127 for (i = 0; i < nb_input_files; i++) {
2128 InputFile *ifile = input_files[i];
2129 if (ifile->rate_emu)
2130 for (j = 0; j < ifile->nb_streams; j++)
2131 input_streams[j + ifile->ist_index]->start = av_gettime_relative();
2132 }
2133
2134 /* init input streams */
2135 for (i = 0; i < nb_input_streams; i++)
2136 if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
2137 goto dump_format;
2138
2139 /* open each encoder */
2140 for (i = 0; i < nb_output_streams; i++) {
2141 ret = init_output_stream(output_streams[i], error, sizeof(error));
2142 if (ret < 0)
2143 goto dump_format;
2144 }
2145
2146
2147 /* discard unused programs */
2148 for (i = 0; i < nb_input_files; i++) {
2149 InputFile *ifile = input_files[i];
2150 for (j = 0; j < ifile->ctx->nb_programs; j++) {
2151 AVProgram *p = ifile->ctx->programs[j];
2152 int discard = AVDISCARD_ALL;
2153
2154 for (k = 0; k < p->nb_stream_indexes; k++)
2155 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2156 discard = AVDISCARD_DEFAULT;
2157 break;
2158 }
2159 p->discard = discard;
2160 }
2161 }
2162
2163 dump_format:
2164 /* dump the stream mapping */
2165 av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2166 for (i = 0; i < nb_input_streams; i++) {
2167 ist = input_streams[i];
2168
2169 for (j = 0; j < ist->nb_filters; j++) {
2170 if (!filtergraph_is_simple(ist->filters[j]->graph)) {
2171 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d (%s) -> %s",
2172 ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2173 ist->filters[j]->name);
2174 if (nb_filtergraphs > 1)
2175 av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2176 av_log(NULL, AV_LOG_INFO, "\n");
2177 }
2178 }
2179 }
2180
2181 for (i = 0; i < nb_output_streams; i++) {
2182 ost = output_streams[i];
2183
2184 if (ost->attachment_filename) {
2185 /* an attached file */
2186 av_log(NULL, AV_LOG_INFO, " File %s -> Stream #%d:%d\n",
2187 ost->attachment_filename, ost->file_index, ost->index);
2188 continue;
2189 }
2190
2191 if (ost->filter && !filtergraph_is_simple(ost->filter->graph)) {
2192 /* output from a complex graph */
2193 av_log(NULL, AV_LOG_INFO, " %s", ost->filter->name);
2194 if (nb_filtergraphs > 1)
2195 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2196
2197 av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2198 ost->index, ost->enc ? ost->enc->name : "?");
2199 continue;
2200 }
2201
2202 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d -> #%d:%d",
2203 input_streams[ost->source_index]->file_index,
2204 input_streams[ost->source_index]->st->index,
2205 ost->file_index,
2206 ost->index);
2207 if (ost->sync_ist != input_streams[ost->source_index])
2208 av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2209 ost->sync_ist->file_index,
2210 ost->sync_ist->st->index);
2211 if (ost->stream_copy)
2212 av_log(NULL, AV_LOG_INFO, " (copy)");
2213 else {
2214 const AVCodec *in_codec = input_streams[ost->source_index]->dec;
2215 const AVCodec *out_codec = ost->enc;
2216 const char *decoder_name = "?";
2217 const char *in_codec_name = "?";
2218 const char *encoder_name = "?";
2219 const char *out_codec_name = "?";
2220 const AVCodecDescriptor *desc;
2221
2222 if (in_codec) {
2223 decoder_name = in_codec->name;
2224 desc = avcodec_descriptor_get(in_codec->id);
2225 if (desc)
2226 in_codec_name = desc->name;
2227 if (!strcmp(decoder_name, in_codec_name))
2228 decoder_name = "native";
2229 }
2230
2231 if (out_codec) {
2232 encoder_name = out_codec->name;
2233 desc = avcodec_descriptor_get(out_codec->id);
2234 if (desc)
2235 out_codec_name = desc->name;
2236 if (!strcmp(encoder_name, out_codec_name))
2237 encoder_name = "native";
2238 }
2239
2240 av_log(NULL, AV_LOG_INFO, " (%s (%s) -> %s (%s))",
2241 in_codec_name, decoder_name,
2242 out_codec_name, encoder_name);
2243 }
2244 av_log(NULL, AV_LOG_INFO, "\n");
2245 }
2246
2247 if (ret) {
2248 av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2249 return ret;
2250 }
2251
2252 return 0;
2253 }
2254
2255 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2256 static int need_output(void)
2257 {
2258 int i;
2259
2260 for (i = 0; i < nb_output_streams; i++) {
2261 OutputStream *ost = output_streams[i];
2262 OutputFile *of = output_files[ost->file_index];
2263 AVFormatContext *os = output_files[ost->file_index]->ctx;
2264
2265 if (ost->finished ||
2266 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2267 continue;
2268 if (ost->frame_number >= ost->max_frames) {
2269 int j;
2270 for (j = 0; j < of->ctx->nb_streams; j++)
2271 output_streams[of->ost_index + j]->finished = 1;
2272 continue;
2273 }
2274
2275 return 1;
2276 }
2277
2278 return 0;
2279 }
2280
2281 static InputFile *select_input_file(void)
2282 {
2283 InputFile *ifile = NULL;
2284 int64_t ipts_min = INT64_MAX;
2285 int i;
2286
2287 for (i = 0; i < nb_input_streams; i++) {
2288 InputStream *ist = input_streams[i];
2289 int64_t ipts = ist->last_dts;
2290
2291 if (ist->discard || input_files[ist->file_index]->eagain)
2292 continue;
2293 if (!input_files[ist->file_index]->eof_reached) {
2294 if (ipts < ipts_min) {
2295 ipts_min = ipts;
2296 ifile = input_files[ist->file_index];
2297 }
2298 }
2299 }
2300
2301 return ifile;
2302 }
2303
2304 #if HAVE_PTHREADS
2305 static void *input_thread(void *arg)
2306 {
2307 InputFile *f = arg;
2308 int ret = 0;
2309
2310 while (!transcoding_finished && ret >= 0) {
2311 AVPacket pkt;
2312 ret = av_read_frame(f->ctx, &pkt);
2313
2314 if (ret == AVERROR(EAGAIN)) {
2315 av_usleep(10000);
2316 ret = 0;
2317 continue;
2318 } else if (ret < 0)
2319 break;
2320
2321 pthread_mutex_lock(&f->fifo_lock);
2322 while (!av_fifo_space(f->fifo))
2323 pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2324
2325 av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2326
2327 pthread_mutex_unlock(&f->fifo_lock);
2328 }
2329
2330 f->finished = 1;
2331 return NULL;
2332 }
2333
2334 static void free_input_threads(void)
2335 {
2336 int i;
2337
2338 if (nb_input_files == 1)
2339 return;
2340
2341 transcoding_finished = 1;
2342
2343 for (i = 0; i < nb_input_files; i++) {
2344 InputFile *f = input_files[i];
2345 AVPacket pkt;
2346
2347 if (!f->fifo || f->joined)
2348 continue;
2349
2350 pthread_mutex_lock(&f->fifo_lock);
2351 while (av_fifo_size(f->fifo)) {
2352 av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2353 av_packet_unref(&pkt);
2354 }
2355 pthread_cond_signal(&f->fifo_cond);
2356 pthread_mutex_unlock(&f->fifo_lock);
2357
2358 pthread_join(f->thread, NULL);
2359 f->joined = 1;
2360
2361 while (av_fifo_size(f->fifo)) {
2362 av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2363 av_packet_unref(&pkt);
2364 }
2365 av_fifo_free(f->fifo);
2366 }
2367 }
2368
2369 static int init_input_threads(void)
2370 {
2371 int i, ret;
2372
2373 if (nb_input_files == 1)
2374 return 0;
2375
2376 for (i = 0; i < nb_input_files; i++) {
2377 InputFile *f = input_files[i];
2378
2379 if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2380 return AVERROR(ENOMEM);
2381
2382 pthread_mutex_init(&f->fifo_lock, NULL);
2383 pthread_cond_init (&f->fifo_cond, NULL);
2384
2385 if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2386 return AVERROR(ret);
2387 }
2388 return 0;
2389 }
2390
2391 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2392 {
2393 int ret = 0;
2394
2395 pthread_mutex_lock(&f->fifo_lock);
2396
2397 if (av_fifo_size(f->fifo)) {
2398 av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2399 pthread_cond_signal(&f->fifo_cond);
2400 } else {
2401 if (f->finished)
2402 ret = AVERROR_EOF;
2403 else
2404 ret = AVERROR(EAGAIN);
2405 }
2406
2407 pthread_mutex_unlock(&f->fifo_lock);
2408
2409 return ret;
2410 }
2411 #endif
2412
2413 static int get_input_packet(InputFile *f, AVPacket *pkt)
2414 {
2415 if (f->rate_emu) {
2416 int i;
2417 for (i = 0; i < f->nb_streams; i++) {
2418 InputStream *ist = input_streams[f->ist_index + i];
2419 int64_t pts = av_rescale(ist->last_dts, 1000000, AV_TIME_BASE);
2420 int64_t now = av_gettime_relative() - ist->start;
2421 if (pts > now)
2422 return AVERROR(EAGAIN);
2423 }
2424 }
2425
2426 #if HAVE_PTHREADS
2427 if (nb_input_files > 1)
2428 return get_input_packet_mt(f, pkt);
2429 #endif
2430 return av_read_frame(f->ctx, pkt);
2431 }
2432
2433 static int got_eagain(void)
2434 {
2435 int i;
2436 for (i = 0; i < nb_input_files; i++)
2437 if (input_files[i]->eagain)
2438 return 1;
2439 return 0;
2440 }
2441
2442 static void reset_eagain(void)
2443 {
2444 int i;
2445 for (i = 0; i < nb_input_files; i++)
2446 input_files[i]->eagain = 0;
2447 }
2448
2449 // set duration to max(tmp, duration) in a proper time base and return duration's time_base
2450 static AVRational duration_max(int64_t tmp, int64_t *duration, AVRational tmp_time_base,
2451 AVRational time_base)
2452 {
2453 int ret;
2454
2455 if (!*duration) {
2456 *duration = tmp;
2457 return tmp_time_base;
2458 }
2459
2460 ret = av_compare_ts(*duration, time_base, tmp, tmp_time_base);
2461 if (ret < 0) {
2462 *duration = tmp;
2463 return tmp_time_base;
2464 }
2465
2466 return time_base;
2467 }
2468
2469 static int seek_to_start(InputFile *ifile, AVFormatContext *is)
2470 {
2471 InputStream *ist;
2472 AVCodecContext *avctx;
2473 int i, ret, has_audio = 0;
2474 int64_t duration = 0;
2475
2476 ret = av_seek_frame(is, -1, is->start_time, 0);
2477 if (ret < 0)
2478 return ret;
2479
2480 for (i = 0; i < ifile->nb_streams; i++) {
2481 ist = input_streams[ifile->ist_index + i];
2482 avctx = ist->dec_ctx;
2483
2484 // flush decoders
2485 if (ist->decoding_needed) {
2486 process_input_packet(ist, NULL, 1);
2487 avcodec_flush_buffers(avctx);
2488 }
2489
2490 /* duration is the length of the last frame in a stream
2491 * when audio stream is present we don't care about
2492 * last video frame length because it's not defined exactly */
2493 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && ist->nb_samples)
2494 has_audio = 1;
2495 }
2496
2497 for (i = 0; i < ifile->nb_streams; i++) {
2498 ist = input_streams[ifile->ist_index + i];
2499 avctx = ist->dec_ctx;
2500
2501 if (has_audio) {
2502 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && ist->nb_samples) {
2503 AVRational sample_rate = {1, avctx->sample_rate};
2504
2505 duration = av_rescale_q(ist->nb_samples, sample_rate, ist->st->time_base);
2506 } else
2507 continue;
2508 } else {
2509 if (ist->framerate.num) {
2510 duration = av_rescale_q(1, ist->framerate, ist->st->time_base);
2511 } else if (ist->st->avg_frame_rate.num) {
2512 duration = av_rescale_q(1, ist->st->avg_frame_rate, ist->st->time_base);
2513 } else duration = 1;
2514 }
2515 if (!ifile->duration)
2516 ifile->time_base = ist->st->time_base;
2517 /* the total duration of the stream, max_pts - min_pts is
2518 * the duration of the stream without the last frame */
2519 duration += ist->max_pts - ist->min_pts;
2520 ifile->time_base = duration_max(duration, &ifile->duration, ist->st->time_base,
2521 ifile->time_base);
2522 }
2523
2524 if (ifile->loop > 0)
2525 ifile->loop--;
2526
2527 return ret;
2528 }
2529
2530 /*
2531 * Read one packet from an input file and send it for
2532 * - decoding -> lavfi (audio/video)
2533 * - decoding -> encoding -> muxing (subtitles)
2534 * - muxing (streamcopy)
2535 *
2536 * Return
2537 * - 0 -- one packet was read and processed
2538 * - AVERROR(EAGAIN) -- no packets were available for selected file,
2539 * this function should be called again
2540 * - AVERROR_EOF -- this function should not be called again
2541 */
2542 static int process_input(void)
2543 {
2544 InputFile *ifile;
2545 AVFormatContext *is;
2546 InputStream *ist;
2547 AVPacket pkt;
2548 int ret, i, j;
2549 int64_t duration;
2550
2551 /* select the stream that we must read now */
2552 ifile = select_input_file();
2553 /* if none, if is finished */
2554 if (!ifile) {
2555 if (got_eagain()) {
2556 reset_eagain();
2557 av_usleep(10000);
2558 return AVERROR(EAGAIN);
2559 }
2560 av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from.\n");
2561 return AVERROR_EOF;
2562 }
2563
2564 is = ifile->ctx;
2565 ret = get_input_packet(ifile, &pkt);
2566
2567 if (ret == AVERROR(EAGAIN)) {
2568 ifile->eagain = 1;
2569 return ret;
2570 }
2571 if (ret < 0 && ifile->loop) {
2572 if ((ret = seek_to_start(ifile, is)) < 0)
2573 return ret;
2574 ret = get_input_packet(ifile, &pkt);
2575 }
2576 if (ret < 0) {
2577 if (ret != AVERROR_EOF) {
2578 print_error(is->filename, ret);
2579 if (exit_on_error)
2580 exit_program(1);
2581 }
2582 ifile->eof_reached = 1;
2583
2584 for (i = 0; i < ifile->nb_streams; i++) {
2585 ist = input_streams[ifile->ist_index + i];
2586 if (ist->decoding_needed)
2587 process_input_packet(ist, NULL, 0);
2588
2589 /* mark all outputs that don't go through lavfi as finished */
2590 for (j = 0; j < nb_output_streams; j++) {
2591 OutputStream *ost = output_streams[j];
2592
2593 if (ost->source_index == ifile->ist_index + i &&
2594 (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2595 finish_output_stream(ost);
2596 }
2597 }
2598
2599 return AVERROR(EAGAIN);
2600 }
2601
2602 reset_eagain();
2603
2604 if (do_pkt_dump) {
2605 av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2606 is->streams[pkt.stream_index]);
2607 }
2608 /* the following test is needed in case new streams appear
2609 dynamically in stream : we ignore them */
2610 if (pkt.stream_index >= ifile->nb_streams)
2611 goto discard_packet;
2612
2613 ist = input_streams[ifile->ist_index + pkt.stream_index];
2614
2615 ist->data_size += pkt.size;
2616 ist->nb_packets++;
2617
2618 if (ist->discard)
2619 goto discard_packet;
2620
2621 /* add the stream-global side data to the first packet */
2622 if (ist->nb_packets == 1)
2623 for (i = 0; i < ist->st->nb_side_data; i++) {
2624 AVPacketSideData *src_sd = &ist->st->side_data[i];
2625 uint8_t *dst_data;
2626
2627 if (av_packet_get_side_data(&pkt, src_sd->type, NULL))
2628 continue;
2629 if (ist->autorotate && src_sd->type == AV_PKT_DATA_DISPLAYMATRIX)
2630 continue;
2631
2632 dst_data = av_packet_new_side_data(&pkt, src_sd->type, src_sd->size);
2633 if (!dst_data)
2634 exit_program(1);
2635
2636 memcpy(dst_data, src_sd->data, src_sd->size);
2637 }
2638
2639 if (pkt.dts != AV_NOPTS_VALUE)
2640 pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2641 if (pkt.pts != AV_NOPTS_VALUE)
2642 pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2643
2644 if (pkt.pts != AV_NOPTS_VALUE)
2645 pkt.pts *= ist->ts_scale;
2646 if (pkt.dts != AV_NOPTS_VALUE)
2647 pkt.dts *= ist->ts_scale;
2648
2649 if ((ist->dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
2650 ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) &&
2651 pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2652 (is->iformat->flags & AVFMT_TS_DISCONT)) {
2653 int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2654 int64_t delta = pkt_dts - ist->next_dts;
2655
2656 if ((FFABS(delta) > 1LL * dts_delta_threshold * AV_TIME_BASE || pkt_dts + 1 < ist->last_dts) && !copy_ts) {
2657 ifile->ts_offset -= delta;
2658 av_log(NULL, AV_LOG_DEBUG,
2659 "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2660 delta, ifile->ts_offset);
2661 pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2662 if (pkt.pts != AV_NOPTS_VALUE)
2663 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2664 }
2665 }
2666 duration = av_rescale_q(ifile->duration, ifile->time_base, ist->st->time_base);
2667 if (pkt.pts != AV_NOPTS_VALUE) {
2668 pkt.pts += duration;
2669 ist->max_pts = FFMAX(pkt.pts, ist->max_pts);
2670 ist->min_pts = FFMIN(pkt.pts, ist->min_pts);
2671 }
2672
2673 if (pkt.dts != AV_NOPTS_VALUE)
2674 pkt.dts += duration;
2675
2676 process_input_packet(ist, &pkt, 0);
2677
2678 discard_packet:
2679 av_packet_unref(&pkt);
2680
2681 return 0;
2682 }
2683
2684 /*
2685 * The following code is the main loop of the file converter
2686 */
2687 static int transcode(void)
2688 {
2689 int ret, i, need_input = 1;
2690 AVFormatContext *os;
2691 OutputStream *ost;
2692 InputStream *ist;
2693 int64_t timer_start;
2694
2695 ret = transcode_init();
2696 if (ret < 0)
2697 goto fail;
2698
2699 av_log(NULL, AV_LOG_INFO, "Press ctrl-c to stop encoding\n");
2700 term_init();
2701
2702 timer_start = av_gettime_relative();
2703
2704 #if HAVE_PTHREADS
2705 if ((ret = init_input_threads()) < 0)
2706 goto fail;
2707 #endif
2708
2709 while (!received_sigterm) {
2710 /* check if there's any stream where output is still needed */
2711 if (!need_output()) {
2712 av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
2713 break;
2714 }
2715
2716 /* read and process one input packet if needed */
2717 if (need_input) {
2718 ret = process_input();
2719 if (ret == AVERROR_EOF)
2720 need_input = 0;
2721 }
2722
2723 ret = poll_filters();
2724 if (ret < 0 && ret != AVERROR_EOF) {
2725 char errbuf[128];
2726 av_strerror(ret, errbuf, sizeof(errbuf));
2727
2728 av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n", errbuf);
2729 break;
2730 }
2731
2732 /* dump report by using the output first video and audio streams */
2733 print_report(0, timer_start);
2734 }
2735 #if HAVE_PTHREADS
2736 free_input_threads();
2737 #endif
2738
2739 /* at the end of stream, we must flush the decoder buffers */
2740 for (i = 0; i < nb_input_streams; i++) {
2741 ist = input_streams[i];
2742 if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
2743 process_input_packet(ist, NULL, 0);
2744 }
2745 }
2746 poll_filters();
2747 flush_encoders();
2748
2749 term_exit();
2750
2751 /* write the trailer if needed and close file */
2752 for (i = 0; i < nb_output_files; i++) {
2753 os = output_files[i]->ctx;
2754 if (!output_files[i]->header_written) {
2755 av_log(NULL, AV_LOG_ERROR,
2756 "Nothing was written into output file %d (%s), because "
2757 "at least one of its streams received no packets.\n",
2758 i, os->filename);
2759 continue;
2760 }
2761 av_write_trailer(os);
2762 }
2763
2764 /* dump report by using the first video and audio streams */
2765 print_report(1, timer_start);
2766
2767 /* close each encoder */
2768 for (i = 0; i < nb_output_streams; i++) {
2769 ost = output_streams[i];
2770 if (ost->encoding_needed) {
2771 av_freep(&ost->enc_ctx->stats_in);
2772 }
2773 }
2774
2775 /* close each decoder */
2776 for (i = 0; i < nb_input_streams; i++) {
2777 ist = input_streams[i];
2778 if (ist->decoding_needed) {
2779 avcodec_close(ist->dec_ctx);
2780 if (ist->hwaccel_uninit)
2781 ist->hwaccel_uninit(ist->dec_ctx);
2782 }
2783 }
2784
2785 av_buffer_unref(&hw_device_ctx);
2786
2787 /* finished ! */
2788 ret = 0;
2789
2790 fail:
2791 #if HAVE_PTHREADS
2792 free_input_threads();
2793 #endif
2794
2795 if (output_streams) {
2796 for (i = 0; i < nb_output_streams; i++) {
2797 ost = output_streams[i];
2798 if (ost) {
2799 if (ost->logfile) {
2800 fclose(ost->logfile);
2801 ost->logfile = NULL;
2802 }
2803 av_free(ost->forced_kf_pts);
2804 av_dict_free(&ost->encoder_opts);
2805 av_dict_free(&ost->resample_opts);
2806 }
2807 }
2808 }
2809 return ret;
2810 }
2811
2812 static int64_t getutime(void)
2813 {
2814 #if HAVE_GETRUSAGE
2815 struct rusage rusage;
2816
2817 getrusage(RUSAGE_SELF, &rusage);
2818 return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
2819 #elif HAVE_GETPROCESSTIMES
2820 HANDLE proc;
2821 FILETIME c, e, k, u;
2822 proc = GetCurrentProcess();
2823 GetProcessTimes(proc, &c, &e, &k, &u);
2824 return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
2825 #else
2826 return av_gettime_relative();
2827 #endif
2828 }
2829
2830 static int64_t getmaxrss(void)
2831 {
2832 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
2833 struct rusage rusage;
2834 getrusage(RUSAGE_SELF, &rusage);
2835 return (int64_t)rusage.ru_maxrss * 1024;
2836 #elif HAVE_GETPROCESSMEMORYINFO
2837 HANDLE proc;
2838 PROCESS_MEMORY_COUNTERS memcounters;
2839 proc = GetCurrentProcess();
2840 memcounters.cb = sizeof(memcounters);
2841 GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
2842 return memcounters.PeakPagefileUsage;
2843 #else
2844 return 0;
2845 #endif
2846 }
2847
2848 int main(int argc, char **argv)
2849 {
2850 int i, ret;
2851 int64_t ti;
2852
2853 register_exit(avconv_cleanup);
2854
2855 av_log_set_flags(AV_LOG_SKIP_REPEATED);
2856 parse_loglevel(argc, argv, options);
2857
2858 avcodec_register_all();
2859 #if CONFIG_AVDEVICE
2860 avdevice_register_all();
2861 #endif
2862 avfilter_register_all();
2863 av_register_all();
2864 avformat_network_init();
2865
2866 show_banner();
2867
2868 /* parse options and open all input/output files */
2869 ret = avconv_parse_options(argc, argv);
2870 if (ret < 0)
2871 exit_program(1);
2872
2873 if (nb_output_files <= 0 && nb_input_files == 0) {
2874 show_usage();
2875 av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
2876 exit_program(1);
2877 }
2878
2879 /* file converter / grab */
2880 if (nb_output_files <= 0) {
2881 fprintf(stderr, "At least one output file must be specified\n");
2882 exit_program(1);
2883 }
2884
2885 for (i = 0; i < nb_output_files; i++) {
2886 if (strcmp(output_files[i]->ctx->oformat->name, "rtp"))
2887 want_sdp = 0;
2888 }
2889
2890 ti = getutime();
2891 if (transcode() < 0)
2892 exit_program(1);
2893 ti = getutime() - ti;
2894 if (do_benchmark) {
2895 int maxrss = getmaxrss() / 1024;
2896 printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss);
2897 }
2898
2899 exit_program(0);
2900 return 0;
2901 }