xcb: Add all the libraries to the link line explicitly
[libav.git] / avconv.c
1 /*
2 * avconv main
3 * Copyright (c) 2000-2011 The Libav developers
4 *
5 * This file is part of Libav.
6 *
7 * Libav is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * Libav is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #include "config.h"
23 #include <ctype.h>
24 #include <string.h>
25 #include <math.h>
26 #include <stdlib.h>
27 #include <errno.h>
28 #include <signal.h>
29 #include <limits.h>
30 #include <stdint.h>
31
32 #include "libavformat/avformat.h"
33 #include "libavdevice/avdevice.h"
34 #include "libswscale/swscale.h"
35 #include "libavresample/avresample.h"
36 #include "libavutil/opt.h"
37 #include "libavutil/channel_layout.h"
38 #include "libavutil/parseutils.h"
39 #include "libavutil/samplefmt.h"
40 #include "libavutil/fifo.h"
41 #include "libavutil/internal.h"
42 #include "libavutil/intreadwrite.h"
43 #include "libavutil/dict.h"
44 #include "libavutil/mathematics.h"
45 #include "libavutil/pixdesc.h"
46 #include "libavutil/avstring.h"
47 #include "libavutil/libm.h"
48 #include "libavutil/imgutils.h"
49 #include "libavutil/time.h"
50 #include "libavformat/os_support.h"
51
52 # include "libavfilter/avfilter.h"
53 # include "libavfilter/buffersrc.h"
54 # include "libavfilter/buffersink.h"
55
56 #if HAVE_SYS_RESOURCE_H
57 #include <sys/time.h>
58 #include <sys/types.h>
59 #include <sys/resource.h>
60 #elif HAVE_GETPROCESSTIMES
61 #include <windows.h>
62 #endif
63 #if HAVE_GETPROCESSMEMORYINFO
64 #include <windows.h>
65 #include <psapi.h>
66 #endif
67
68 #if HAVE_SYS_SELECT_H
69 #include <sys/select.h>
70 #endif
71
72 #if HAVE_PTHREADS
73 #include <pthread.h>
74 #endif
75
76 #include <time.h>
77
78 #include "avconv.h"
79 #include "cmdutils.h"
80
81 #include "libavutil/avassert.h"
82
83 const char program_name[] = "avconv";
84 const int program_birth_year = 2000;
85
86 static FILE *vstats_file;
87
88 static int nb_frames_drop = 0;
89
90 static int want_sdp = 1;
91
92 #if HAVE_PTHREADS
93 /* signal to input threads that they should exit; set by the main thread */
94 static int transcoding_finished;
95 #endif
96
97 InputStream **input_streams = NULL;
98 int nb_input_streams = 0;
99 InputFile **input_files = NULL;
100 int nb_input_files = 0;
101
102 OutputStream **output_streams = NULL;
103 int nb_output_streams = 0;
104 OutputFile **output_files = NULL;
105 int nb_output_files = 0;
106
107 FilterGraph **filtergraphs;
108 int nb_filtergraphs;
109
110 static void term_exit(void)
111 {
112 av_log(NULL, AV_LOG_QUIET, "");
113 }
114
115 static volatile int received_sigterm = 0;
116 static volatile int received_nb_signals = 0;
117
118 static void
119 sigterm_handler(int sig)
120 {
121 received_sigterm = sig;
122 received_nb_signals++;
123 term_exit();
124 }
125
126 static void term_init(void)
127 {
128 signal(SIGINT , sigterm_handler); /* Interrupt (ANSI). */
129 signal(SIGTERM, sigterm_handler); /* Termination (ANSI). */
130 #ifdef SIGXCPU
131 signal(SIGXCPU, sigterm_handler);
132 #endif
133 }
134
135 static int decode_interrupt_cb(void *ctx)
136 {
137 return received_nb_signals > 1;
138 }
139
140 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
141
142 static void avconv_cleanup(int ret)
143 {
144 int i, j;
145
146 for (i = 0; i < nb_filtergraphs; i++) {
147 FilterGraph *fg = filtergraphs[i];
148 avfilter_graph_free(&fg->graph);
149 for (j = 0; j < fg->nb_inputs; j++) {
150 while (av_fifo_size(fg->inputs[j]->frame_queue)) {
151 AVFrame *frame;
152 av_fifo_generic_read(fg->inputs[j]->frame_queue, &frame,
153 sizeof(frame), NULL);
154 av_frame_free(&frame);
155 }
156 av_fifo_free(fg->inputs[j]->frame_queue);
157 av_buffer_unref(&fg->inputs[j]->hw_frames_ctx);
158 av_freep(&fg->inputs[j]->name);
159 av_freep(&fg->inputs[j]);
160 }
161 av_freep(&fg->inputs);
162 for (j = 0; j < fg->nb_outputs; j++) {
163 av_freep(&fg->outputs[j]->name);
164 av_freep(&fg->outputs[j]->formats);
165 av_freep(&fg->outputs[j]->channel_layouts);
166 av_freep(&fg->outputs[j]->sample_rates);
167 av_freep(&fg->outputs[j]);
168 }
169 av_freep(&fg->outputs);
170 av_freep(&fg->graph_desc);
171
172 av_freep(&filtergraphs[i]);
173 }
174 av_freep(&filtergraphs);
175
176 /* close files */
177 for (i = 0; i < nb_output_files; i++) {
178 OutputFile *of = output_files[i];
179 AVFormatContext *s = of->ctx;
180 if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE) && s->pb)
181 avio_close(s->pb);
182 avformat_free_context(s);
183 av_dict_free(&of->opts);
184
185 av_freep(&output_files[i]);
186 }
187 for (i = 0; i < nb_output_streams; i++) {
188 OutputStream *ost = output_streams[i];
189
190 for (j = 0; j < ost->nb_bitstream_filters; j++)
191 av_bsf_free(&ost->bsf_ctx[j]);
192 av_freep(&ost->bsf_ctx);
193 av_freep(&ost->bitstream_filters);
194
195 av_frame_free(&ost->filtered_frame);
196
197 av_parser_close(ost->parser);
198 avcodec_free_context(&ost->parser_avctx);
199
200 av_freep(&ost->forced_keyframes);
201 av_freep(&ost->avfilter);
202 av_freep(&ost->logfile_prefix);
203
204 avcodec_free_context(&ost->enc_ctx);
205
206 if (ost->muxing_queue) {
207 while (av_fifo_size(ost->muxing_queue)) {
208 AVPacket pkt;
209 av_log(NULL, AV_LOG_INFO, "after av_fifo_size()\n");
210 av_fifo_generic_read(ost->muxing_queue, &pkt, sizeof(pkt), NULL);
211 av_packet_unref(&pkt);
212 }
213 av_fifo_free(ost->muxing_queue);
214 }
215 av_freep(&output_streams[i]);
216 }
217 for (i = 0; i < nb_input_files; i++) {
218 avformat_close_input(&input_files[i]->ctx);
219 av_freep(&input_files[i]);
220 }
221 for (i = 0; i < nb_input_streams; i++) {
222 InputStream *ist = input_streams[i];
223
224 av_frame_free(&ist->decoded_frame);
225 av_frame_free(&ist->filter_frame);
226 av_dict_free(&ist->decoder_opts);
227 av_freep(&ist->filters);
228 av_freep(&ist->hwaccel_device);
229
230 avcodec_free_context(&ist->dec_ctx);
231
232 av_freep(&input_streams[i]);
233 }
234
235 if (vstats_file)
236 fclose(vstats_file);
237 av_free(vstats_filename);
238
239 av_freep(&input_streams);
240 av_freep(&input_files);
241 av_freep(&output_streams);
242 av_freep(&output_files);
243
244 uninit_opts();
245
246 avformat_network_deinit();
247
248 if (received_sigterm) {
249 av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
250 (int) received_sigterm);
251 exit (255);
252 }
253 }
254
255 void assert_avoptions(AVDictionary *m)
256 {
257 AVDictionaryEntry *t;
258 if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
259 av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
260 exit_program(1);
261 }
262 }
263
264 static void abort_codec_experimental(AVCodec *c, int encoder)
265 {
266 const char *codec_string = encoder ? "encoder" : "decoder";
267 AVCodec *codec;
268 av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
269 "results.\nAdd '-strict experimental' if you want to use it.\n",
270 codec_string, c->name);
271 codec = encoder ? avcodec_find_encoder(c->id) : avcodec_find_decoder(c->id);
272 if (!(codec->capabilities & AV_CODEC_CAP_EXPERIMENTAL))
273 av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
274 codec_string, codec->name);
275 exit_program(1);
276 }
277
278 static void write_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost)
279 {
280 AVFormatContext *s = of->ctx;
281 AVStream *st = ost->st;
282 int ret;
283
284 if (!of->header_written) {
285 AVPacket tmp_pkt;
286 /* the muxer is not initialized yet, buffer the packet */
287 if (!av_fifo_space(ost->muxing_queue)) {
288 int new_size = FFMIN(2 * av_fifo_size(ost->muxing_queue),
289 ost->max_muxing_queue_size);
290 if (new_size <= av_fifo_size(ost->muxing_queue)) {
291 av_log(NULL, AV_LOG_ERROR,
292 "Too many packets buffered for output stream %d:%d.\n",
293 ost->file_index, ost->st->index);
294 exit_program(1);
295 }
296 ret = av_fifo_realloc2(ost->muxing_queue, new_size);
297 if (ret < 0)
298 exit_program(1);
299 }
300 av_packet_move_ref(&tmp_pkt, pkt);
301 av_fifo_generic_write(ost->muxing_queue, &tmp_pkt, sizeof(tmp_pkt), NULL);
302 return;
303 }
304
305 /*
306 * Audio encoders may split the packets -- #frames in != #packets out.
307 * But there is no reordering, so we can limit the number of output packets
308 * by simply dropping them here.
309 * Counting encoded video frames needs to be done separately because of
310 * reordering, see do_video_out()
311 */
312 if (!(st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO && ost->encoding_needed)) {
313 if (ost->frame_number >= ost->max_frames) {
314 av_packet_unref(pkt);
315 return;
316 }
317 ost->frame_number++;
318 }
319 if (st->codecpar->codec_type == AVMEDIA_TYPE_VIDEO) {
320 uint8_t *sd = av_packet_get_side_data(pkt, AV_PKT_DATA_QUALITY_FACTOR,
321 NULL);
322 ost->quality = sd ? *(int *)sd : -1;
323
324 if (ost->frame_rate.num) {
325 pkt->duration = av_rescale_q(1, av_inv_q(ost->frame_rate),
326 ost->mux_timebase);
327 }
328 }
329
330 if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS) &&
331 ost->last_mux_dts != AV_NOPTS_VALUE &&
332 pkt->dts < ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT)) {
333 av_log(NULL, AV_LOG_WARNING, "Non-monotonous DTS in output stream "
334 "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
335 ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
336 if (exit_on_error) {
337 av_log(NULL, AV_LOG_FATAL, "aborting.\n");
338 exit_program(1);
339 }
340 av_log(NULL, AV_LOG_WARNING, "changing to %"PRId64". This may result "
341 "in incorrect timestamps in the output file.\n",
342 ost->last_mux_dts + 1);
343 pkt->dts = ost->last_mux_dts + 1;
344 if (pkt->pts != AV_NOPTS_VALUE)
345 pkt->pts = FFMAX(pkt->pts, pkt->dts);
346 }
347 ost->last_mux_dts = pkt->dts;
348
349 ost->data_size += pkt->size;
350 ost->packets_written++;
351
352 pkt->stream_index = ost->index;
353 av_packet_rescale_ts(pkt, ost->mux_timebase, ost->st->time_base);
354
355 ret = av_interleaved_write_frame(s, pkt);
356 if (ret < 0) {
357 print_error("av_interleaved_write_frame()", ret);
358 exit_program(1);
359 }
360 }
361
362 static void output_packet(OutputFile *of, AVPacket *pkt, OutputStream *ost)
363 {
364 int ret = 0;
365
366 /* apply the output bitstream filters, if any */
367 if (ost->nb_bitstream_filters) {
368 int idx;
369
370 ret = av_bsf_send_packet(ost->bsf_ctx[0], pkt);
371 if (ret < 0)
372 goto finish;
373
374 idx = 1;
375 while (idx) {
376 /* get a packet from the previous filter up the chain */
377 ret = av_bsf_receive_packet(ost->bsf_ctx[idx - 1], pkt);
378 if (ret == AVERROR(EAGAIN)) {
379 ret = 0;
380 idx--;
381 continue;
382 } else if (ret < 0)
383 goto finish;
384
385 /* send it to the next filter down the chain or to the muxer */
386 if (idx < ost->nb_bitstream_filters) {
387 ret = av_bsf_send_packet(ost->bsf_ctx[idx], pkt);
388 if (ret < 0)
389 goto finish;
390 idx++;
391 } else
392 write_packet(of, pkt, ost);
393 }
394 } else
395 write_packet(of, pkt, ost);
396
397 finish:
398 if (ret < 0 && ret != AVERROR_EOF) {
399 av_log(NULL, AV_LOG_FATAL, "Error applying bitstream filters to an output "
400 "packet for stream #%d:%d.\n", ost->file_index, ost->index);
401 exit_program(1);
402 }
403 }
404
405 static int check_recording_time(OutputStream *ost)
406 {
407 OutputFile *of = output_files[ost->file_index];
408
409 if (of->recording_time != INT64_MAX &&
410 av_compare_ts(ost->sync_opts - ost->first_pts, ost->enc_ctx->time_base, of->recording_time,
411 AV_TIME_BASE_Q) >= 0) {
412 ost->finished = 1;
413 return 0;
414 }
415 return 1;
416 }
417
418 static void do_audio_out(OutputFile *of, OutputStream *ost,
419 AVFrame *frame)
420 {
421 AVCodecContext *enc = ost->enc_ctx;
422 AVPacket pkt;
423 int ret;
424
425 av_init_packet(&pkt);
426 pkt.data = NULL;
427 pkt.size = 0;
428
429 if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
430 frame->pts = ost->sync_opts;
431 ost->sync_opts = frame->pts + frame->nb_samples;
432
433 ost->samples_encoded += frame->nb_samples;
434 ost->frames_encoded++;
435
436 ret = avcodec_send_frame(enc, frame);
437 if (ret < 0)
438 goto error;
439
440 while (1) {
441 ret = avcodec_receive_packet(enc, &pkt);
442 if (ret == AVERROR(EAGAIN))
443 break;
444 if (ret < 0)
445 goto error;
446
447 output_packet(of, &pkt, ost);
448 }
449
450 return;
451 error:
452 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
453 exit_program(1);
454 }
455
456 static void do_subtitle_out(OutputFile *of,
457 OutputStream *ost,
458 InputStream *ist,
459 AVSubtitle *sub,
460 int64_t pts)
461 {
462 static uint8_t *subtitle_out = NULL;
463 int subtitle_out_max_size = 1024 * 1024;
464 int subtitle_out_size, nb, i;
465 AVCodecContext *enc;
466 AVPacket pkt;
467
468 if (pts == AV_NOPTS_VALUE) {
469 av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
470 if (exit_on_error)
471 exit_program(1);
472 return;
473 }
474
475 enc = ost->enc_ctx;
476
477 if (!subtitle_out) {
478 subtitle_out = av_malloc(subtitle_out_max_size);
479 }
480
481 /* Note: DVB subtitle need one packet to draw them and one other
482 packet to clear them */
483 /* XXX: signal it in the codec context ? */
484 if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
485 nb = 2;
486 else
487 nb = 1;
488
489 for (i = 0; i < nb; i++) {
490 ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
491 if (!check_recording_time(ost))
492 return;
493
494 sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
495 // start_display_time is required to be 0
496 sub->pts += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
497 sub->end_display_time -= sub->start_display_time;
498 sub->start_display_time = 0;
499
500 ost->frames_encoded++;
501
502 subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
503 subtitle_out_max_size, sub);
504 if (subtitle_out_size < 0) {
505 av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
506 exit_program(1);
507 }
508
509 av_init_packet(&pkt);
510 pkt.data = subtitle_out;
511 pkt.size = subtitle_out_size;
512 pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->mux_timebase);
513 if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
514 /* XXX: the pts correction is handled here. Maybe handling
515 it in the codec would be better */
516 if (i == 0)
517 pkt.pts += 90 * sub->start_display_time;
518 else
519 pkt.pts += 90 * sub->end_display_time;
520 }
521 output_packet(of, &pkt, ost);
522 }
523 }
524
525 static void do_video_out(OutputFile *of,
526 OutputStream *ost,
527 AVFrame *in_picture,
528 int *frame_size)
529 {
530 int ret, format_video_sync;
531 AVPacket pkt;
532 AVCodecContext *enc = ost->enc_ctx;
533
534 *frame_size = 0;
535
536 format_video_sync = video_sync_method;
537 if (format_video_sync == VSYNC_AUTO)
538 format_video_sync = (of->ctx->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH :
539 (of->ctx->oformat->flags & AVFMT_VARIABLE_FPS) ? VSYNC_VFR : VSYNC_CFR;
540 if (format_video_sync != VSYNC_PASSTHROUGH &&
541 ost->frame_number &&
542 in_picture->pts != AV_NOPTS_VALUE &&
543 in_picture->pts < ost->sync_opts) {
544 nb_frames_drop++;
545 av_log(NULL, AV_LOG_WARNING,
546 "*** dropping frame %d from stream %d at ts %"PRId64"\n",
547 ost->frame_number, ost->st->index, in_picture->pts);
548 return;
549 }
550
551 if (in_picture->pts == AV_NOPTS_VALUE)
552 in_picture->pts = ost->sync_opts;
553 ost->sync_opts = in_picture->pts;
554
555
556 if (!ost->frame_number)
557 ost->first_pts = in_picture->pts;
558
559 av_init_packet(&pkt);
560 pkt.data = NULL;
561 pkt.size = 0;
562
563 if (ost->frame_number >= ost->max_frames)
564 return;
565
566 if (enc->flags & (AV_CODEC_FLAG_INTERLACED_DCT | AV_CODEC_FLAG_INTERLACED_ME) &&
567 ost->top_field_first >= 0)
568 in_picture->top_field_first = !!ost->top_field_first;
569
570 in_picture->quality = enc->global_quality;
571 in_picture->pict_type = 0;
572 if (ost->forced_kf_index < ost->forced_kf_count &&
573 in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
574 in_picture->pict_type = AV_PICTURE_TYPE_I;
575 ost->forced_kf_index++;
576 }
577
578 ost->frames_encoded++;
579
580 ret = avcodec_send_frame(enc, in_picture);
581 if (ret < 0)
582 goto error;
583
584 /*
585 * For video, there may be reordering, so we can't throw away frames on
586 * encoder flush, we need to limit them here, before they go into encoder.
587 */
588 ost->frame_number++;
589
590 while (1) {
591 ret = avcodec_receive_packet(enc, &pkt);
592 if (ret == AVERROR(EAGAIN))
593 break;
594 if (ret < 0)
595 goto error;
596
597 output_packet(of, &pkt, ost);
598 *frame_size = pkt.size;
599
600 /* if two pass, output log */
601 if (ost->logfile && enc->stats_out) {
602 fprintf(ost->logfile, "%s", enc->stats_out);
603 }
604
605 ost->sync_opts++;
606 }
607
608 return;
609 error:
610 av_assert0(ret != AVERROR(EAGAIN) && ret != AVERROR_EOF);
611 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
612 exit_program(1);
613 }
614
615 #if FF_API_CODED_FRAME && FF_API_ERROR_FRAME
616 static double psnr(double d)
617 {
618 return -10.0 * log(d) / log(10.0);
619 }
620 #endif
621
622 static void do_video_stats(OutputStream *ost, int frame_size)
623 {
624 AVCodecContext *enc;
625 int frame_number;
626 double ti1, bitrate, avg_bitrate;
627
628 /* this is executed just the first time do_video_stats is called */
629 if (!vstats_file) {
630 vstats_file = fopen(vstats_filename, "w");
631 if (!vstats_file) {
632 perror("fopen");
633 exit_program(1);
634 }
635 }
636
637 enc = ost->enc_ctx;
638 if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
639 frame_number = ost->frame_number;
640 fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number,
641 ost->quality / (float)FF_QP2LAMBDA);
642
643 #if FF_API_CODED_FRAME && FF_API_ERROR_FRAME
644 FF_DISABLE_DEPRECATION_WARNINGS
645 if (enc->flags & AV_CODEC_FLAG_PSNR)
646 fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
647 FF_ENABLE_DEPRECATION_WARNINGS
648 #endif
649
650 fprintf(vstats_file,"f_size= %6d ", frame_size);
651 /* compute pts value */
652 ti1 = ost->sync_opts * av_q2d(enc->time_base);
653 if (ti1 < 0.01)
654 ti1 = 0.01;
655
656 bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
657 avg_bitrate = (double)(ost->data_size * 8) / ti1 / 1000.0;
658 fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
659 (double)ost->data_size / 1024, ti1, bitrate, avg_bitrate);
660 #if FF_API_CODED_FRAME
661 FF_DISABLE_DEPRECATION_WARNINGS
662 fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
663 FF_ENABLE_DEPRECATION_WARNINGS
664 #endif
665 }
666 }
667
668 static int init_output_stream(OutputStream *ost, char *error, int error_len);
669
670 /*
671 * Read one frame for lavfi output for ost and encode it.
672 */
673 static int poll_filter(OutputStream *ost)
674 {
675 OutputFile *of = output_files[ost->file_index];
676 AVFrame *filtered_frame = NULL;
677 int frame_size, ret;
678
679 if (!ost->filtered_frame && !(ost->filtered_frame = av_frame_alloc())) {
680 return AVERROR(ENOMEM);
681 }
682 filtered_frame = ost->filtered_frame;
683
684 if (!ost->initialized) {
685 char error[1024];
686 ret = init_output_stream(ost, error, sizeof(error));
687 if (ret < 0) {
688 av_log(NULL, AV_LOG_ERROR, "Error initializing output stream %d:%d -- %s\n",
689 ost->file_index, ost->index, error);
690 exit_program(1);
691 }
692 }
693
694 if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
695 !(ost->enc->capabilities & AV_CODEC_CAP_VARIABLE_FRAME_SIZE))
696 ret = av_buffersink_get_samples(ost->filter->filter, filtered_frame,
697 ost->enc_ctx->frame_size);
698 else
699 ret = av_buffersink_get_frame(ost->filter->filter, filtered_frame);
700
701 if (ret < 0)
702 return ret;
703
704 if (filtered_frame->pts != AV_NOPTS_VALUE) {
705 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
706 filtered_frame->pts = av_rescale_q(filtered_frame->pts,
707 ost->filter->filter->inputs[0]->time_base,
708 ost->enc_ctx->time_base) -
709 av_rescale_q(start_time,
710 AV_TIME_BASE_Q,
711 ost->enc_ctx->time_base);
712 }
713
714 switch (ost->filter->filter->inputs[0]->type) {
715 case AVMEDIA_TYPE_VIDEO:
716 if (!ost->frame_aspect_ratio)
717 ost->enc_ctx->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
718
719 do_video_out(of, ost, filtered_frame, &frame_size);
720 if (vstats_filename && frame_size)
721 do_video_stats(ost, frame_size);
722 break;
723 case AVMEDIA_TYPE_AUDIO:
724 do_audio_out(of, ost, filtered_frame);
725 break;
726 default:
727 // TODO support subtitle filters
728 av_assert0(0);
729 }
730
731 av_frame_unref(filtered_frame);
732
733 return 0;
734 }
735
736 static void finish_output_stream(OutputStream *ost)
737 {
738 OutputFile *of = output_files[ost->file_index];
739 int i;
740
741 ost->finished = 1;
742
743 if (of->shortest) {
744 for (i = 0; i < of->ctx->nb_streams; i++)
745 output_streams[of->ost_index + i]->finished = 1;
746 }
747 }
748
749 /*
750 * Read as many frames from possible from lavfi and encode them.
751 *
752 * Always read from the active stream with the lowest timestamp. If no frames
753 * are available for it then return EAGAIN and wait for more input. This way we
754 * can use lavfi sources that generate unlimited amount of frames without memory
755 * usage exploding.
756 */
757 static int poll_filters(void)
758 {
759 int i, ret = 0;
760
761 while (ret >= 0 && !received_sigterm) {
762 OutputStream *ost = NULL;
763 int64_t min_pts = INT64_MAX;
764
765 /* choose output stream with the lowest timestamp */
766 for (i = 0; i < nb_output_streams; i++) {
767 int64_t pts = output_streams[i]->sync_opts;
768
769 if (output_streams[i]->filter && !output_streams[i]->filter->graph->graph &&
770 !output_streams[i]->filter->graph->nb_inputs) {
771 ret = configure_filtergraph(output_streams[i]->filter->graph);
772 if (ret < 0) {
773 av_log(NULL, AV_LOG_ERROR, "Error reinitializing filters!\n");
774 return ret;
775 }
776 }
777
778 if (!output_streams[i]->filter || output_streams[i]->finished ||
779 !output_streams[i]->filter->graph->graph)
780 continue;
781
782 pts = av_rescale_q(pts, output_streams[i]->enc_ctx->time_base,
783 AV_TIME_BASE_Q);
784 if (pts < min_pts) {
785 min_pts = pts;
786 ost = output_streams[i];
787 }
788 }
789
790 if (!ost)
791 break;
792
793 ret = poll_filter(ost);
794
795 if (ret == AVERROR_EOF) {
796 finish_output_stream(ost);
797 ret = 0;
798 } else if (ret == AVERROR(EAGAIN))
799 return 0;
800 }
801
802 return ret;
803 }
804
805 static void print_final_stats(int64_t total_size)
806 {
807 uint64_t video_size = 0, audio_size = 0, extra_size = 0, other_size = 0;
808 uint64_t data_size = 0;
809 float percent = -1.0;
810 int i, j;
811
812 for (i = 0; i < nb_output_streams; i++) {
813 OutputStream *ost = output_streams[i];
814 switch (ost->enc_ctx->codec_type) {
815 case AVMEDIA_TYPE_VIDEO: video_size += ost->data_size; break;
816 case AVMEDIA_TYPE_AUDIO: audio_size += ost->data_size; break;
817 default: other_size += ost->data_size; break;
818 }
819 extra_size += ost->enc_ctx->extradata_size;
820 data_size += ost->data_size;
821 }
822
823 if (data_size && total_size >= data_size)
824 percent = 100.0 * (total_size - data_size) / data_size;
825
826 av_log(NULL, AV_LOG_INFO, "\n");
827 av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB other streams:%1.0fkB global headers:%1.0fkB muxing overhead: ",
828 video_size / 1024.0,
829 audio_size / 1024.0,
830 other_size / 1024.0,
831 extra_size / 1024.0);
832 if (percent >= 0.0)
833 av_log(NULL, AV_LOG_INFO, "%f%%", percent);
834 else
835 av_log(NULL, AV_LOG_INFO, "unknown");
836 av_log(NULL, AV_LOG_INFO, "\n");
837
838 /* print verbose per-stream stats */
839 for (i = 0; i < nb_input_files; i++) {
840 InputFile *f = input_files[i];
841 uint64_t total_packets = 0, total_size = 0;
842
843 av_log(NULL, AV_LOG_VERBOSE, "Input file #%d (%s):\n",
844 i, f->ctx->filename);
845
846 for (j = 0; j < f->nb_streams; j++) {
847 InputStream *ist = input_streams[f->ist_index + j];
848 enum AVMediaType type = ist->dec_ctx->codec_type;
849
850 total_size += ist->data_size;
851 total_packets += ist->nb_packets;
852
853 av_log(NULL, AV_LOG_VERBOSE, " Input stream #%d:%d (%s): ",
854 i, j, media_type_string(type));
855 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets read (%"PRIu64" bytes); ",
856 ist->nb_packets, ist->data_size);
857
858 if (ist->decoding_needed) {
859 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames decoded",
860 ist->frames_decoded);
861 if (type == AVMEDIA_TYPE_AUDIO)
862 av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ist->samples_decoded);
863 av_log(NULL, AV_LOG_VERBOSE, "; ");
864 }
865
866 av_log(NULL, AV_LOG_VERBOSE, "\n");
867 }
868
869 av_log(NULL, AV_LOG_VERBOSE, " Total: %"PRIu64" packets (%"PRIu64" bytes) demuxed\n",
870 total_packets, total_size);
871 }
872
873 for (i = 0; i < nb_output_files; i++) {
874 OutputFile *of = output_files[i];
875 uint64_t total_packets = 0, total_size = 0;
876
877 av_log(NULL, AV_LOG_VERBOSE, "Output file #%d (%s):\n",
878 i, of->ctx->filename);
879
880 for (j = 0; j < of->ctx->nb_streams; j++) {
881 OutputStream *ost = output_streams[of->ost_index + j];
882 enum AVMediaType type = ost->enc_ctx->codec_type;
883
884 total_size += ost->data_size;
885 total_packets += ost->packets_written;
886
887 av_log(NULL, AV_LOG_VERBOSE, " Output stream #%d:%d (%s): ",
888 i, j, media_type_string(type));
889 if (ost->encoding_needed) {
890 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames encoded",
891 ost->frames_encoded);
892 if (type == AVMEDIA_TYPE_AUDIO)
893 av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ost->samples_encoded);
894 av_log(NULL, AV_LOG_VERBOSE, "; ");
895 }
896
897 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets muxed (%"PRIu64" bytes); ",
898 ost->packets_written, ost->data_size);
899
900 av_log(NULL, AV_LOG_VERBOSE, "\n");
901 }
902
903 av_log(NULL, AV_LOG_VERBOSE, " Total: %"PRIu64" packets (%"PRIu64" bytes) muxed\n",
904 total_packets, total_size);
905 }
906 }
907
908 static void print_report(int is_last_report, int64_t timer_start)
909 {
910 char buf[1024];
911 OutputStream *ost;
912 AVFormatContext *oc;
913 int64_t total_size;
914 AVCodecContext *enc;
915 int frame_number, vid, i;
916 double bitrate, ti1, pts;
917 static int64_t last_time = -1;
918 static int qp_histogram[52];
919
920 if (!print_stats && !is_last_report)
921 return;
922
923 if (!is_last_report) {
924 int64_t cur_time;
925 /* display the report every 0.5 seconds */
926 cur_time = av_gettime_relative();
927 if (last_time == -1) {
928 last_time = cur_time;
929 return;
930 }
931 if ((cur_time - last_time) < 500000)
932 return;
933 last_time = cur_time;
934 }
935
936
937 oc = output_files[0]->ctx;
938
939 total_size = avio_size(oc->pb);
940 if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
941 total_size = avio_tell(oc->pb);
942 if (total_size < 0) {
943 char errbuf[128];
944 av_strerror(total_size, errbuf, sizeof(errbuf));
945 av_log(NULL, AV_LOG_VERBOSE, "Bitrate not available, "
946 "avio_tell() failed: %s\n", errbuf);
947 total_size = 0;
948 }
949
950 buf[0] = '\0';
951 ti1 = 1e10;
952 vid = 0;
953 for (i = 0; i < nb_output_streams; i++) {
954 float q = -1;
955 ost = output_streams[i];
956 enc = ost->enc_ctx;
957 if (!ost->stream_copy)
958 q = ost->quality / (float) FF_QP2LAMBDA;
959
960 if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
961 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
962 }
963 if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
964 float t = (av_gettime_relative() - timer_start) / 1000000.0;
965
966 frame_number = ost->frame_number;
967 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
968 frame_number, (t > 1) ? (int)(frame_number / t + 0.5) : 0, q);
969 if (is_last_report)
970 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
971 if (qp_hist) {
972 int j;
973 int qp = lrintf(q);
974 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
975 qp_histogram[qp]++;
976 for (j = 0; j < 32; j++)
977 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
978 }
979
980 #if FF_API_CODED_FRAME && FF_API_ERROR_FRAME
981 FF_DISABLE_DEPRECATION_WARNINGS
982 if (enc->flags & AV_CODEC_FLAG_PSNR) {
983 int j;
984 double error, error_sum = 0;
985 double scale, scale_sum = 0;
986 char type[3] = { 'Y','U','V' };
987 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
988 for (j = 0; j < 3; j++) {
989 if (is_last_report) {
990 error = enc->error[j];
991 scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
992 } else {
993 error = enc->coded_frame->error[j];
994 scale = enc->width * enc->height * 255.0 * 255.0;
995 }
996 if (j)
997 scale /= 4;
998 error_sum += error;
999 scale_sum += scale;
1000 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
1001 }
1002 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1003 }
1004 FF_ENABLE_DEPRECATION_WARNINGS
1005 #endif
1006 vid = 1;
1007 }
1008 /* compute min output value */
1009 pts = (double)ost->last_mux_dts * av_q2d(ost->mux_timebase);
1010 if ((pts < ti1) && (pts > 0))
1011 ti1 = pts;
1012 }
1013 if (ti1 < 0.01)
1014 ti1 = 0.01;
1015
1016 bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1017
1018 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1019 "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1020 (double)total_size / 1024, ti1, bitrate);
1021
1022 if (nb_frames_drop)
1023 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " drop=%d",
1024 nb_frames_drop);
1025
1026 av_log(NULL, AV_LOG_INFO, "%s \r", buf);
1027
1028 fflush(stderr);
1029
1030 if (is_last_report)
1031 print_final_stats(total_size);
1032
1033 }
1034
1035 static void flush_encoders(void)
1036 {
1037 int i, ret;
1038
1039 for (i = 0; i < nb_output_streams; i++) {
1040 OutputStream *ost = output_streams[i];
1041 AVCodecContext *enc = ost->enc_ctx;
1042 OutputFile *of = output_files[ost->file_index];
1043 int stop_encoding = 0;
1044
1045 if (!ost->encoding_needed)
1046 continue;
1047
1048 if (enc->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1049 continue;
1050
1051 if (enc->codec_type != AVMEDIA_TYPE_VIDEO && enc->codec_type != AVMEDIA_TYPE_AUDIO)
1052 continue;
1053
1054 avcodec_send_frame(enc, NULL);
1055
1056 for (;;) {
1057 const char *desc = NULL;
1058
1059 switch (enc->codec_type) {
1060 case AVMEDIA_TYPE_AUDIO:
1061 desc = "Audio";
1062 break;
1063 case AVMEDIA_TYPE_VIDEO:
1064 desc = "Video";
1065 break;
1066 default:
1067 av_assert0(0);
1068 }
1069
1070 if (1) {
1071 AVPacket pkt;
1072 av_init_packet(&pkt);
1073 pkt.data = NULL;
1074 pkt.size = 0;
1075
1076 ret = avcodec_receive_packet(enc, &pkt);
1077 if (ret < 0 && ret != AVERROR_EOF) {
1078 av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1079 exit_program(1);
1080 }
1081 if (ost->logfile && enc->stats_out) {
1082 fprintf(ost->logfile, "%s", enc->stats_out);
1083 }
1084 if (ret == AVERROR_EOF) {
1085 stop_encoding = 1;
1086 break;
1087 }
1088 output_packet(of, &pkt, ost);
1089 }
1090
1091 if (stop_encoding)
1092 break;
1093 }
1094 }
1095 }
1096
1097 /*
1098 * Check whether a packet from ist should be written into ost at this time
1099 */
1100 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1101 {
1102 OutputFile *of = output_files[ost->file_index];
1103 int ist_index = input_files[ist->file_index]->ist_index + ist->st->index;
1104
1105 if (ost->source_index != ist_index)
1106 return 0;
1107
1108 if (of->start_time != AV_NOPTS_VALUE && ist->last_dts < of->start_time)
1109 return 0;
1110
1111 return 1;
1112 }
1113
1114 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1115 {
1116 OutputFile *of = output_files[ost->file_index];
1117 InputFile *f = input_files [ist->file_index];
1118 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1119 int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->mux_timebase);
1120 AVPacket opkt;
1121
1122 av_init_packet(&opkt);
1123
1124 if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1125 !ost->copy_initial_nonkeyframes)
1126 return;
1127
1128 if (of->recording_time != INT64_MAX &&
1129 ist->last_dts >= of->recording_time + start_time) {
1130 ost->finished = 1;
1131 return;
1132 }
1133
1134 if (f->recording_time != INT64_MAX) {
1135 start_time = f->ctx->start_time;
1136 if (f->start_time != AV_NOPTS_VALUE)
1137 start_time += f->start_time;
1138 if (ist->last_dts >= f->recording_time + start_time) {
1139 ost->finished = 1;
1140 return;
1141 }
1142 }
1143
1144 /* force the input stream PTS */
1145 if (ost->enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO)
1146 ost->sync_opts++;
1147
1148 if (pkt->pts != AV_NOPTS_VALUE)
1149 opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->mux_timebase) - ost_tb_start_time;
1150 else
1151 opkt.pts = AV_NOPTS_VALUE;
1152
1153 if (pkt->dts == AV_NOPTS_VALUE)
1154 opkt.dts = av_rescale_q(ist->last_dts, AV_TIME_BASE_Q, ost->mux_timebase);
1155 else
1156 opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->mux_timebase);
1157 opkt.dts -= ost_tb_start_time;
1158
1159 opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->mux_timebase);
1160 opkt.flags = pkt->flags;
1161
1162 // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1163 if ( ost->enc_ctx->codec_id != AV_CODEC_ID_H264
1164 && ost->enc_ctx->codec_id != AV_CODEC_ID_MPEG1VIDEO
1165 && ost->enc_ctx->codec_id != AV_CODEC_ID_MPEG2VIDEO
1166 && ost->enc_ctx->codec_id != AV_CODEC_ID_VC1
1167 ) {
1168 if (av_parser_change(ost->parser, ost->parser_avctx,
1169 &opkt.data, &opkt.size,
1170 pkt->data, pkt->size,
1171 pkt->flags & AV_PKT_FLAG_KEY)) {
1172 opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1173 if (!opkt.buf)
1174 exit_program(1);
1175 }
1176 } else {
1177 opkt.data = pkt->data;
1178 opkt.size = pkt->size;
1179 }
1180
1181 output_packet(of, &opkt, ost);
1182 }
1183
1184 static int ifilter_send_frame(InputFilter *ifilter, AVFrame *frame)
1185 {
1186 FilterGraph *fg = ifilter->graph;
1187 int need_reinit, ret, i;
1188
1189 /* determine if the parameters for this input changed */
1190 need_reinit = ifilter->format != frame->format;
1191 if (!!ifilter->hw_frames_ctx != !!frame->hw_frames_ctx ||
1192 (ifilter->hw_frames_ctx && ifilter->hw_frames_ctx->data != frame->hw_frames_ctx->data))
1193 need_reinit = 1;
1194
1195 switch (ifilter->ist->st->codecpar->codec_type) {
1196 case AVMEDIA_TYPE_AUDIO:
1197 need_reinit |= ifilter->sample_rate != frame->sample_rate ||
1198 ifilter->channel_layout != frame->channel_layout;
1199 break;
1200 case AVMEDIA_TYPE_VIDEO:
1201 need_reinit |= ifilter->width != frame->width ||
1202 ifilter->height != frame->height;
1203 break;
1204 }
1205
1206 if (need_reinit) {
1207 ret = ifilter_parameters_from_frame(ifilter, frame);
1208 if (ret < 0)
1209 return ret;
1210 }
1211
1212 /* (re)init the graph if possible, otherwise buffer the frame and return */
1213 if (need_reinit || !fg->graph) {
1214 for (i = 0; i < fg->nb_inputs; i++) {
1215 if (fg->inputs[i]->format < 0) {
1216 AVFrame *tmp = av_frame_clone(frame);
1217 if (!tmp)
1218 return AVERROR(ENOMEM);
1219 av_frame_unref(frame);
1220
1221 if (!av_fifo_space(ifilter->frame_queue)) {
1222 ret = av_fifo_realloc2(ifilter->frame_queue, 2 * av_fifo_size(ifilter->frame_queue));
1223 if (ret < 0)
1224 return ret;
1225 }
1226 av_fifo_generic_write(ifilter->frame_queue, &tmp, sizeof(tmp), NULL);
1227 return 0;
1228 }
1229 }
1230
1231 ret = poll_filters();
1232 if (ret < 0 && ret != AVERROR_EOF) {
1233 char errbuf[128];
1234 av_strerror(ret, errbuf, sizeof(errbuf));
1235
1236 av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n", errbuf);
1237 return ret;
1238 }
1239
1240 ret = configure_filtergraph(fg);
1241 if (ret < 0) {
1242 av_log(NULL, AV_LOG_ERROR, "Error reinitializing filters!\n");
1243 return ret;
1244 }
1245 }
1246
1247 ret = av_buffersrc_add_frame(ifilter->filter, frame);
1248 if (ret < 0) {
1249 av_log(NULL, AV_LOG_ERROR, "Error while filtering\n");
1250 return ret;
1251 }
1252
1253 return 0;
1254 }
1255
1256 static int ifilter_send_eof(InputFilter *ifilter)
1257 {
1258 int i, j, ret;
1259
1260 ifilter->eof = 1;
1261
1262 if (ifilter->filter) {
1263 ret = av_buffersrc_add_frame(ifilter->filter, NULL);
1264 if (ret < 0)
1265 return ret;
1266 } else {
1267 // the filtergraph was never configured
1268 FilterGraph *fg = ifilter->graph;
1269 for (i = 0; i < fg->nb_inputs; i++)
1270 if (!fg->inputs[i]->eof)
1271 break;
1272 if (i == fg->nb_inputs) {
1273 // All the input streams have finished without the filtergraph
1274 // ever being configured.
1275 // Mark the output streams as finished.
1276 for (j = 0; j < fg->nb_outputs; j++)
1277 finish_output_stream(fg->outputs[j]->ost);
1278 }
1279 }
1280
1281 return 0;
1282 }
1283
1284 // This does not quite work like avcodec_decode_audio4/avcodec_decode_video2.
1285 // There is the following difference: if you got a frame, you must call
1286 // it again with pkt=NULL. pkt==NULL is treated differently from pkt.size==0
1287 // (pkt==NULL means get more output, pkt.size==0 is a flush/drain packet)
1288 static int decode(AVCodecContext *avctx, AVFrame *frame, int *got_frame, AVPacket *pkt)
1289 {
1290 int ret;
1291
1292 *got_frame = 0;
1293
1294 if (pkt) {
1295 ret = avcodec_send_packet(avctx, pkt);
1296 // In particular, we don't expect AVERROR(EAGAIN), because we read all
1297 // decoded frames with avcodec_receive_frame() until done.
1298 if (ret < 0)
1299 return ret == AVERROR_EOF ? 0 : ret;
1300 }
1301
1302 ret = avcodec_receive_frame(avctx, frame);
1303 if (ret < 0 && ret != AVERROR(EAGAIN) && ret != AVERROR_EOF)
1304 return ret;
1305 if (ret >= 0)
1306 *got_frame = 1;
1307
1308 return 0;
1309 }
1310
1311 int guess_input_channel_layout(InputStream *ist)
1312 {
1313 AVCodecContext *dec = ist->dec_ctx;
1314
1315 if (!dec->channel_layout) {
1316 char layout_name[256];
1317
1318 dec->channel_layout = av_get_default_channel_layout(dec->channels);
1319 if (!dec->channel_layout)
1320 return 0;
1321 av_get_channel_layout_string(layout_name, sizeof(layout_name),
1322 dec->channels, dec->channel_layout);
1323 av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for Input Stream "
1324 "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1325 }
1326 return 1;
1327 }
1328
1329 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output,
1330 int *decode_failed)
1331 {
1332 AVFrame *decoded_frame, *f;
1333 AVCodecContext *avctx = ist->dec_ctx;
1334 int i, ret, err = 0;
1335
1336 if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1337 return AVERROR(ENOMEM);
1338 if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1339 return AVERROR(ENOMEM);
1340 decoded_frame = ist->decoded_frame;
1341
1342 ret = decode(avctx, decoded_frame, got_output, pkt);
1343 if (ret < 0)
1344 *decode_failed = 1;
1345 if (!*got_output || ret < 0)
1346 return ret;
1347
1348 ist->samples_decoded += decoded_frame->nb_samples;
1349 ist->frames_decoded++;
1350
1351 /* if the decoder provides a pts, use it instead of the last packet pts.
1352 the decoder could be delaying output by a packet or more. */
1353 if (decoded_frame->pts != AV_NOPTS_VALUE)
1354 ist->next_dts = decoded_frame->pts;
1355 else if (pkt && pkt->pts != AV_NOPTS_VALUE) {
1356 decoded_frame->pts = pkt->pts;
1357 }
1358
1359 if (decoded_frame->pts != AV_NOPTS_VALUE)
1360 decoded_frame->pts = av_rescale_q(decoded_frame->pts,
1361 ist->st->time_base,
1362 (AVRational){1, avctx->sample_rate});
1363 ist->nb_samples = decoded_frame->nb_samples;
1364 for (i = 0; i < ist->nb_filters; i++) {
1365 if (i < ist->nb_filters - 1) {
1366 f = ist->filter_frame;
1367 err = av_frame_ref(f, decoded_frame);
1368 if (err < 0)
1369 break;
1370 } else
1371 f = decoded_frame;
1372
1373 err = ifilter_send_frame(ist->filters[i], f);
1374 if (err < 0)
1375 break;
1376 }
1377
1378 av_frame_unref(ist->filter_frame);
1379 av_frame_unref(decoded_frame);
1380 return err < 0 ? err : ret;
1381 }
1382
1383 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output,
1384 int *decode_failed)
1385 {
1386 AVFrame *decoded_frame, *f;
1387 int i, ret = 0, err = 0;
1388
1389 if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1390 return AVERROR(ENOMEM);
1391 if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1392 return AVERROR(ENOMEM);
1393 decoded_frame = ist->decoded_frame;
1394
1395 ret = decode(ist->dec_ctx, decoded_frame, got_output, pkt);
1396 if (ret < 0)
1397 *decode_failed = 1;
1398 if (!*got_output || ret < 0)
1399 return ret;
1400
1401 ist->frames_decoded++;
1402
1403 if (ist->hwaccel_retrieve_data && decoded_frame->format == ist->hwaccel_pix_fmt) {
1404 err = ist->hwaccel_retrieve_data(ist->dec_ctx, decoded_frame);
1405 if (err < 0)
1406 goto fail;
1407 }
1408 ist->hwaccel_retrieved_pix_fmt = decoded_frame->format;
1409
1410 decoded_frame->pts = guess_correct_pts(&ist->pts_ctx, decoded_frame->pts,
1411 decoded_frame->pkt_dts);
1412 if (ist->framerate.num)
1413 decoded_frame->pts = ist->cfr_next_pts++;
1414
1415 if (ist->st->sample_aspect_ratio.num)
1416 decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1417
1418 for (i = 0; i < ist->nb_filters; i++) {
1419 if (i < ist->nb_filters - 1) {
1420 f = ist->filter_frame;
1421 err = av_frame_ref(f, decoded_frame);
1422 if (err < 0)
1423 break;
1424 } else
1425 f = decoded_frame;
1426
1427 err = ifilter_send_frame(ist->filters[i], f);
1428 if (err < 0)
1429 break;
1430 }
1431
1432 fail:
1433 av_frame_unref(ist->filter_frame);
1434 av_frame_unref(decoded_frame);
1435 return err < 0 ? err : ret;
1436 }
1437
1438 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output,
1439 int *decode_failed)
1440 {
1441 AVSubtitle subtitle;
1442 int i, ret = avcodec_decode_subtitle2(ist->dec_ctx,
1443 &subtitle, got_output, pkt);
1444 if (ret < 0) {
1445 *decode_failed = 1;
1446 return ret;
1447 }
1448 if (!*got_output)
1449 return ret;
1450
1451 ist->frames_decoded++;
1452
1453 for (i = 0; i < nb_output_streams; i++) {
1454 OutputStream *ost = output_streams[i];
1455
1456 if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1457 continue;
1458
1459 do_subtitle_out(output_files[ost->file_index], ost, ist, &subtitle, pkt->pts);
1460 }
1461
1462 avsubtitle_free(&subtitle);
1463 return ret;
1464 }
1465
1466 static int send_filter_eof(InputStream *ist)
1467 {
1468 int i, ret;
1469 for (i = 0; i < ist->nb_filters; i++) {
1470 ret = ifilter_send_eof(ist->filters[i]);
1471 if (ret < 0)
1472 return ret;
1473 }
1474 return 0;
1475 }
1476
1477 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1478 static void process_input_packet(InputStream *ist, const AVPacket *pkt, int no_eof)
1479 {
1480 int i;
1481 int repeating = 0;
1482 AVPacket avpkt;
1483
1484 if (ist->next_dts == AV_NOPTS_VALUE)
1485 ist->next_dts = ist->last_dts;
1486
1487 if (!pkt) {
1488 /* EOF handling */
1489 av_init_packet(&avpkt);
1490 avpkt.data = NULL;
1491 avpkt.size = 0;
1492 } else {
1493 avpkt = *pkt;
1494 }
1495
1496 if (pkt && pkt->dts != AV_NOPTS_VALUE)
1497 ist->next_dts = ist->last_dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1498
1499 // while we have more to decode or while the decoder did output something on EOF
1500 while (ist->decoding_needed && (!pkt || avpkt.size > 0)) {
1501 int ret = 0;
1502 int got_output = 0;
1503 int decode_failed = 0;
1504
1505 if (!repeating)
1506 ist->last_dts = ist->next_dts;
1507
1508 switch (ist->dec_ctx->codec_type) {
1509 case AVMEDIA_TYPE_AUDIO:
1510 ret = decode_audio (ist, repeating ? NULL : &avpkt, &got_output,
1511 &decode_failed);
1512 break;
1513 case AVMEDIA_TYPE_VIDEO:
1514 ret = decode_video (ist, repeating ? NULL : &avpkt, &got_output,
1515 &decode_failed);
1516 if (repeating && !got_output)
1517 ;
1518 else if (pkt && pkt->duration)
1519 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1520 else if (ist->st->avg_frame_rate.num)
1521 ist->next_dts += av_rescale_q(1, av_inv_q(ist->st->avg_frame_rate),
1522 AV_TIME_BASE_Q);
1523 else if (ist->dec_ctx->framerate.num != 0) {
1524 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 :
1525 ist->dec_ctx->ticks_per_frame;
1526 ist->next_dts += av_rescale_q(ticks, ist->dec_ctx->framerate, AV_TIME_BASE_Q);
1527 }
1528 break;
1529 case AVMEDIA_TYPE_SUBTITLE:
1530 if (repeating)
1531 break;
1532 ret = transcode_subtitles(ist, &avpkt, &got_output, &decode_failed);
1533 break;
1534 default:
1535 return;
1536 }
1537
1538 if (ret < 0) {
1539 if (decode_failed) {
1540 av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
1541 ist->file_index, ist->st->index);
1542 } else {
1543 av_log(NULL, AV_LOG_FATAL, "Error while processing the decoded "
1544 "data for stream #%d:%d\n", ist->file_index, ist->st->index);
1545 }
1546 if (!decode_failed || exit_on_error)
1547 exit_program(1);
1548 break;
1549 }
1550
1551 if (!got_output)
1552 break;
1553
1554 repeating = 1;
1555 }
1556
1557 /* after flushing, send an EOF on all the filter inputs attached to the stream */
1558 /* except when looping we need to flush but not to send an EOF */
1559 if (!pkt && ist->decoding_needed && !no_eof) {
1560 int ret = send_filter_eof(ist);
1561 if (ret < 0) {
1562 av_log(NULL, AV_LOG_FATAL, "Error marking filters as finished\n");
1563 exit_program(1);
1564 }
1565 }
1566
1567 /* handle stream copy */
1568 if (!ist->decoding_needed) {
1569 ist->last_dts = ist->next_dts;
1570 switch (ist->dec_ctx->codec_type) {
1571 case AVMEDIA_TYPE_AUDIO:
1572 ist->next_dts += ((int64_t)AV_TIME_BASE * ist->dec_ctx->frame_size) /
1573 ist->dec_ctx->sample_rate;
1574 break;
1575 case AVMEDIA_TYPE_VIDEO:
1576 if (ist->dec_ctx->framerate.num != 0) {
1577 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->dec_ctx->ticks_per_frame;
1578 ist->next_dts += ((int64_t)AV_TIME_BASE *
1579 ist->dec_ctx->framerate.den * ticks) /
1580 ist->dec_ctx->framerate.num;
1581 }
1582 break;
1583 }
1584 }
1585 for (i = 0; pkt && i < nb_output_streams; i++) {
1586 OutputStream *ost = output_streams[i];
1587
1588 if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1589 continue;
1590
1591 do_streamcopy(ist, ost, pkt);
1592 }
1593
1594 return;
1595 }
1596
1597 static void print_sdp(void)
1598 {
1599 char sdp[16384];
1600 int i;
1601 AVFormatContext **avc;
1602
1603 for (i = 0; i < nb_output_files; i++) {
1604 if (!output_files[i]->header_written)
1605 return;
1606 }
1607
1608 avc = av_malloc(sizeof(*avc) * nb_output_files);
1609 if (!avc)
1610 exit_program(1);
1611 for (i = 0; i < nb_output_files; i++)
1612 avc[i] = output_files[i]->ctx;
1613
1614 av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1615 printf("SDP:\n%s\n", sdp);
1616 fflush(stdout);
1617 av_freep(&avc);
1618 }
1619
1620 static const HWAccel *get_hwaccel(enum AVPixelFormat pix_fmt)
1621 {
1622 int i;
1623 for (i = 0; hwaccels[i].name; i++)
1624 if (hwaccels[i].pix_fmt == pix_fmt)
1625 return &hwaccels[i];
1626 return NULL;
1627 }
1628
1629 static enum AVPixelFormat get_format(AVCodecContext *s, const enum AVPixelFormat *pix_fmts)
1630 {
1631 InputStream *ist = s->opaque;
1632 const enum AVPixelFormat *p;
1633 int ret;
1634
1635 for (p = pix_fmts; *p != -1; p++) {
1636 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(*p);
1637 const HWAccel *hwaccel;
1638
1639 if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
1640 break;
1641
1642 hwaccel = get_hwaccel(*p);
1643 if (!hwaccel ||
1644 (ist->active_hwaccel_id && ist->active_hwaccel_id != hwaccel->id) ||
1645 (ist->hwaccel_id != HWACCEL_AUTO && ist->hwaccel_id != hwaccel->id))
1646 continue;
1647
1648 ret = hwaccel->init(s);
1649 if (ret < 0) {
1650 if (ist->hwaccel_id == hwaccel->id) {
1651 av_log(NULL, AV_LOG_FATAL,
1652 "%s hwaccel requested for input stream #%d:%d, "
1653 "but cannot be initialized.\n", hwaccel->name,
1654 ist->file_index, ist->st->index);
1655 return AV_PIX_FMT_NONE;
1656 }
1657 continue;
1658 }
1659
1660 if (ist->hw_frames_ctx) {
1661 s->hw_frames_ctx = av_buffer_ref(ist->hw_frames_ctx);
1662 if (!s->hw_frames_ctx)
1663 return AV_PIX_FMT_NONE;
1664 }
1665
1666 ist->active_hwaccel_id = hwaccel->id;
1667 ist->hwaccel_pix_fmt = *p;
1668 break;
1669 }
1670
1671 return *p;
1672 }
1673
1674 static int get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
1675 {
1676 InputStream *ist = s->opaque;
1677
1678 if (ist->hwaccel_get_buffer && frame->format == ist->hwaccel_pix_fmt)
1679 return ist->hwaccel_get_buffer(s, frame, flags);
1680
1681 return avcodec_default_get_buffer2(s, frame, flags);
1682 }
1683
1684 static int init_input_stream(int ist_index, char *error, int error_len)
1685 {
1686 int ret;
1687 InputStream *ist = input_streams[ist_index];
1688
1689 if (ist->decoding_needed) {
1690 AVCodec *codec = ist->dec;
1691 if (!codec) {
1692 snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d:%d",
1693 ist->dec_ctx->codec_id, ist->file_index, ist->st->index);
1694 return AVERROR(EINVAL);
1695 }
1696
1697 ist->dec_ctx->opaque = ist;
1698 ist->dec_ctx->get_format = get_format;
1699 ist->dec_ctx->get_buffer2 = get_buffer;
1700 ist->dec_ctx->thread_safe_callbacks = 1;
1701
1702 av_opt_set_int(ist->dec_ctx, "refcounted_frames", 1, 0);
1703
1704 if (!av_dict_get(ist->decoder_opts, "threads", NULL, 0))
1705 av_dict_set(&ist->decoder_opts, "threads", "auto", 0);
1706 if ((ret = avcodec_open2(ist->dec_ctx, codec, &ist->decoder_opts)) < 0) {
1707 char errbuf[128];
1708 if (ret == AVERROR_EXPERIMENTAL)
1709 abort_codec_experimental(codec, 0);
1710
1711 av_strerror(ret, errbuf, sizeof(errbuf));
1712
1713 snprintf(error, error_len,
1714 "Error while opening decoder for input stream "
1715 "#%d:%d : %s",
1716 ist->file_index, ist->st->index, errbuf);
1717 return ret;
1718 }
1719 assert_avoptions(ist->decoder_opts);
1720 }
1721
1722 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;
1723 ist->next_dts = AV_NOPTS_VALUE;
1724 init_pts_correction(&ist->pts_ctx);
1725
1726 return 0;
1727 }
1728
1729 static InputStream *get_input_stream(OutputStream *ost)
1730 {
1731 if (ost->source_index >= 0)
1732 return input_streams[ost->source_index];
1733
1734 if (ost->filter) {
1735 FilterGraph *fg = ost->filter->graph;
1736 int i;
1737
1738 for (i = 0; i < fg->nb_inputs; i++)
1739 if (fg->inputs[i]->ist->dec_ctx->codec_type == ost->enc_ctx->codec_type)
1740 return fg->inputs[i]->ist;
1741 }
1742
1743 return NULL;
1744 }
1745
1746 /* open the muxer when all the streams are initialized */
1747 static int check_init_output_file(OutputFile *of, int file_index)
1748 {
1749 int ret, i;
1750
1751 for (i = 0; i < of->ctx->nb_streams; i++) {
1752 OutputStream *ost = output_streams[of->ost_index + i];
1753 if (!ost->initialized)
1754 return 0;
1755 }
1756
1757 of->ctx->interrupt_callback = int_cb;
1758
1759 ret = avformat_write_header(of->ctx, &of->opts);
1760 if (ret < 0) {
1761 char errbuf[128];
1762
1763 av_strerror(ret, errbuf, sizeof(errbuf));
1764
1765 av_log(NULL, AV_LOG_ERROR,
1766 "Could not write header for output file #%d "
1767 "(incorrect codec parameters ?): %s",
1768 file_index, errbuf);
1769 return ret;
1770 }
1771 assert_avoptions(of->opts);
1772 of->header_written = 1;
1773
1774 av_dump_format(of->ctx, file_index, of->ctx->filename, 1);
1775
1776 if (want_sdp)
1777 print_sdp();
1778
1779 /* flush the muxing queues */
1780 for (i = 0; i < of->ctx->nb_streams; i++) {
1781 OutputStream *ost = output_streams[of->ost_index + i];
1782
1783 while (av_fifo_size(ost->muxing_queue)) {
1784 AVPacket pkt;
1785 av_fifo_generic_read(ost->muxing_queue, &pkt, sizeof(pkt), NULL);
1786 write_packet(of, &pkt, ost);
1787 }
1788 }
1789
1790 return 0;
1791 }
1792
1793 static int init_output_bsfs(OutputStream *ost)
1794 {
1795 AVBSFContext *ctx;
1796 int i, ret;
1797
1798 if (!ost->nb_bitstream_filters)
1799 return 0;
1800
1801 ost->bsf_ctx = av_mallocz_array(ost->nb_bitstream_filters, sizeof(*ost->bsf_ctx));
1802 if (!ost->bsf_ctx)
1803 return AVERROR(ENOMEM);
1804
1805 for (i = 0; i < ost->nb_bitstream_filters; i++) {
1806 ret = av_bsf_alloc(ost->bitstream_filters[i], &ctx);
1807 if (ret < 0) {
1808 av_log(NULL, AV_LOG_ERROR, "Error allocating a bitstream filter context\n");
1809 return ret;
1810 }
1811 ost->bsf_ctx[i] = ctx;
1812
1813 ret = avcodec_parameters_copy(ctx->par_in,
1814 i ? ost->bsf_ctx[i - 1]->par_out : ost->st->codecpar);
1815 if (ret < 0)
1816 return ret;
1817
1818 ctx->time_base_in = i ? ost->bsf_ctx[i - 1]->time_base_out : ost->st->time_base;
1819
1820 ret = av_bsf_init(ctx);
1821 if (ret < 0) {
1822 av_log(NULL, AV_LOG_ERROR, "Error initializing bitstream filter: %s\n",
1823 ost->bitstream_filters[i]->name);
1824 return ret;
1825 }
1826 }
1827
1828 ctx = ost->bsf_ctx[ost->nb_bitstream_filters - 1];
1829 ret = avcodec_parameters_copy(ost->st->codecpar, ctx->par_out);
1830 if (ret < 0)
1831 return ret;
1832
1833 ost->st->time_base = ctx->time_base_out;
1834
1835 return 0;
1836 }
1837
1838 static int init_output_stream_streamcopy(OutputStream *ost)
1839 {
1840 OutputFile *of = output_files[ost->file_index];
1841 InputStream *ist = get_input_stream(ost);
1842 AVCodecParameters *par_dst = ost->st->codecpar;
1843 AVCodecParameters *par_src = ist->st->codecpar;
1844 AVRational sar;
1845 uint32_t codec_tag = par_dst->codec_tag;
1846 int i, ret;
1847
1848 if (!codec_tag) {
1849 if (!of->ctx->oformat->codec_tag ||
1850 av_codec_get_id (of->ctx->oformat->codec_tag, par_src->codec_tag) == par_src->codec_id ||
1851 av_codec_get_tag(of->ctx->oformat->codec_tag, par_src->codec_id) <= 0)
1852 codec_tag = par_src->codec_tag;
1853 }
1854
1855 ret = avcodec_parameters_copy(par_dst, par_src);
1856 if (ret < 0)
1857 return ret;
1858
1859 par_dst->codec_tag = codec_tag;
1860
1861 ost->st->disposition = ist->st->disposition;
1862
1863 ost->st->time_base = ist->st->time_base;
1864
1865 if (ist->st->nb_side_data) {
1866 ost->st->side_data = av_realloc_array(NULL, ist->st->nb_side_data,
1867 sizeof(*ist->st->side_data));
1868 if (!ost->st->side_data)
1869 return AVERROR(ENOMEM);
1870
1871 for (i = 0; i < ist->st->nb_side_data; i++) {
1872 const AVPacketSideData *sd_src = &ist->st->side_data[i];
1873 AVPacketSideData *sd_dst = &ost->st->side_data[i];
1874
1875 sd_dst->data = av_malloc(sd_src->size);
1876 if (!sd_dst->data)
1877 return AVERROR(ENOMEM);
1878 memcpy(sd_dst->data, sd_src->data, sd_src->size);
1879 sd_dst->size = sd_src->size;
1880 sd_dst->type = sd_src->type;
1881 ost->st->nb_side_data++;
1882 }
1883 }
1884
1885 ost->parser = av_parser_init(par_dst->codec_id);
1886 ost->parser_avctx = avcodec_alloc_context3(NULL);
1887 if (!ost->parser_avctx)
1888 return AVERROR(ENOMEM);
1889
1890 if (par_dst->codec_type == AVMEDIA_TYPE_VIDEO) {
1891 if (ost->frame_aspect_ratio)
1892 sar = av_d2q(ost->frame_aspect_ratio * par_dst->height / par_dst->width, 255);
1893 else if (ist->st->sample_aspect_ratio.num)
1894 sar = ist->st->sample_aspect_ratio;
1895 else
1896 sar = par_src->sample_aspect_ratio;
1897 ost->st->sample_aspect_ratio = par_dst->sample_aspect_ratio = sar;
1898 }
1899
1900 return 0;
1901 }
1902
1903 static void set_encoder_id(OutputFile *of, OutputStream *ost)
1904 {
1905 AVDictionaryEntry *e;
1906
1907 uint8_t *encoder_string;
1908 int encoder_string_len;
1909 int format_flags = 0;
1910
1911 e = av_dict_get(of->opts, "fflags", NULL, 0);
1912 if (e) {
1913 const AVOption *o = av_opt_find(of->ctx, "fflags", NULL, 0, 0);
1914 if (!o)
1915 return;
1916 av_opt_eval_flags(of->ctx, o, e->value, &format_flags);
1917 }
1918
1919 encoder_string_len = sizeof(LIBAVCODEC_IDENT) + strlen(ost->enc->name) + 2;
1920 encoder_string = av_mallocz(encoder_string_len);
1921 if (!encoder_string)
1922 exit_program(1);
1923
1924 if (!(format_flags & AVFMT_FLAG_BITEXACT))
1925 av_strlcpy(encoder_string, LIBAVCODEC_IDENT " ", encoder_string_len);
1926 av_strlcat(encoder_string, ost->enc->name, encoder_string_len);
1927 av_dict_set(&ost->st->metadata, "encoder", encoder_string,
1928 AV_DICT_DONT_STRDUP_VAL | AV_DICT_DONT_OVERWRITE);
1929 }
1930
1931 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1932 AVCodecContext *avctx)
1933 {
1934 char *p;
1935 int n = 1, i;
1936 int64_t t;
1937
1938 for (p = kf; *p; p++)
1939 if (*p == ',')
1940 n++;
1941 ost->forced_kf_count = n;
1942 ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1943 if (!ost->forced_kf_pts) {
1944 av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1945 exit_program(1);
1946 }
1947
1948 p = kf;
1949 for (i = 0; i < n; i++) {
1950 char *next = strchr(p, ',');
1951
1952 if (next)
1953 *next++ = 0;
1954
1955 t = parse_time_or_die("force_key_frames", p, 1);
1956 ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1957
1958 p = next;
1959 }
1960 }
1961
1962 static int init_output_stream_encode(OutputStream *ost)
1963 {
1964 InputStream *ist = get_input_stream(ost);
1965 AVCodecContext *enc_ctx = ost->enc_ctx;
1966 AVCodecContext *dec_ctx = NULL;
1967
1968 set_encoder_id(output_files[ost->file_index], ost);
1969
1970 if (ist) {
1971 ost->st->disposition = ist->st->disposition;
1972
1973 dec_ctx = ist->dec_ctx;
1974
1975 enc_ctx->bits_per_raw_sample = dec_ctx->bits_per_raw_sample;
1976 enc_ctx->chroma_sample_location = dec_ctx->chroma_sample_location;
1977 }
1978
1979 switch (enc_ctx->codec_type) {
1980 case AVMEDIA_TYPE_AUDIO:
1981 enc_ctx->sample_fmt = ost->filter->filter->inputs[0]->format;
1982 enc_ctx->sample_rate = ost->filter->filter->inputs[0]->sample_rate;
1983 enc_ctx->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
1984 enc_ctx->channels = av_get_channel_layout_nb_channels(enc_ctx->channel_layout);
1985 enc_ctx->time_base = (AVRational){ 1, enc_ctx->sample_rate };
1986 break;
1987 case AVMEDIA_TYPE_VIDEO:
1988 enc_ctx->time_base = ost->filter->filter->inputs[0]->time_base;
1989
1990 enc_ctx->width = ost->filter->filter->inputs[0]->w;
1991 enc_ctx->height = ost->filter->filter->inputs[0]->h;
1992 enc_ctx->sample_aspect_ratio = ost->st->sample_aspect_ratio =
1993 ost->frame_aspect_ratio ? // overridden by the -aspect cli option
1994 av_d2q(ost->frame_aspect_ratio * enc_ctx->height/enc_ctx->width, 255) :
1995 ost->filter->filter->inputs[0]->sample_aspect_ratio;
1996 enc_ctx->pix_fmt = ost->filter->filter->inputs[0]->format;
1997
1998 enc_ctx->framerate = ost->frame_rate;
1999
2000 ost->st->avg_frame_rate = ost->frame_rate;
2001
2002 if (dec_ctx &&
2003 (enc_ctx->width != dec_ctx->width ||
2004 enc_ctx->height != dec_ctx->height ||
2005 enc_ctx->pix_fmt != dec_ctx->pix_fmt)) {
2006 enc_ctx->bits_per_raw_sample = 0;
2007 }
2008
2009 if (ost->forced_keyframes)
2010 parse_forced_key_frames(ost->forced_keyframes, ost,
2011 ost->enc_ctx);
2012 break;
2013 case AVMEDIA_TYPE_SUBTITLE:
2014 enc_ctx->time_base = (AVRational){1, 1000};
2015 break;
2016 default:
2017 abort();
2018 break;
2019 }
2020
2021 return 0;
2022 }
2023
2024 static int init_output_stream(OutputStream *ost, char *error, int error_len)
2025 {
2026 int ret = 0;
2027
2028 if (ost->encoding_needed) {
2029 AVCodec *codec = ost->enc;
2030 AVCodecContext *dec = NULL;
2031 InputStream *ist;
2032
2033 ret = init_output_stream_encode(ost);
2034 if (ret < 0)
2035 return ret;
2036
2037 if ((ist = get_input_stream(ost)))
2038 dec = ist->dec_ctx;
2039 if (dec && dec->subtitle_header) {
2040 ost->enc_ctx->subtitle_header = av_malloc(dec->subtitle_header_size);
2041 if (!ost->enc_ctx->subtitle_header)
2042 return AVERROR(ENOMEM);
2043 memcpy(ost->enc_ctx->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2044 ost->enc_ctx->subtitle_header_size = dec->subtitle_header_size;
2045 }
2046 if (!av_dict_get(ost->encoder_opts, "threads", NULL, 0))
2047 av_dict_set(&ost->encoder_opts, "threads", "auto", 0);
2048
2049 if (ost->filter && ost->filter->filter->inputs[0]->hw_frames_ctx) {
2050 ost->enc_ctx->hw_frames_ctx = av_buffer_ref(ost->filter->filter->inputs[0]->hw_frames_ctx);
2051 if (!ost->enc_ctx->hw_frames_ctx)
2052 return AVERROR(ENOMEM);
2053 }
2054
2055 if ((ret = avcodec_open2(ost->enc_ctx, codec, &ost->encoder_opts)) < 0) {
2056 if (ret == AVERROR_EXPERIMENTAL)
2057 abort_codec_experimental(codec, 1);
2058 snprintf(error, error_len,
2059 "Error while opening encoder for output stream #%d:%d - "
2060 "maybe incorrect parameters such as bit_rate, rate, width or height",
2061 ost->file_index, ost->index);
2062 return ret;
2063 }
2064 assert_avoptions(ost->encoder_opts);
2065 if (ost->enc_ctx->bit_rate && ost->enc_ctx->bit_rate < 1000)
2066 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2067 "It takes bits/s as argument, not kbits/s\n");
2068
2069 ret = avcodec_parameters_from_context(ost->st->codecpar, ost->enc_ctx);
2070 if (ret < 0) {
2071 av_log(NULL, AV_LOG_FATAL,
2072 "Error initializing the output stream codec context.\n");
2073 exit_program(1);
2074 }
2075
2076 if (ost->enc_ctx->nb_coded_side_data) {
2077 int i;
2078
2079 ost->st->side_data = av_realloc_array(NULL, ost->enc_ctx->nb_coded_side_data,
2080 sizeof(*ost->st->side_data));
2081 if (!ost->st->side_data)
2082 return AVERROR(ENOMEM);
2083
2084 for (i = 0; i < ost->enc_ctx->nb_coded_side_data; i++) {
2085 const AVPacketSideData *sd_src = &ost->enc_ctx->coded_side_data[i];
2086 AVPacketSideData *sd_dst = &ost->st->side_data[i];
2087
2088 sd_dst->data = av_malloc(sd_src->size);
2089 if (!sd_dst->data)
2090 return AVERROR(ENOMEM);
2091 memcpy(sd_dst->data, sd_src->data, sd_src->size);
2092 sd_dst->size = sd_src->size;
2093 sd_dst->type = sd_src->type;
2094 ost->st->nb_side_data++;
2095 }
2096 }
2097
2098 ost->st->time_base = ost->enc_ctx->time_base;
2099 } else if (ost->stream_copy) {
2100 ret = init_output_stream_streamcopy(ost);
2101 if (ret < 0)
2102 return ret;
2103
2104 /*
2105 * FIXME: will the codec context used by the parser during streamcopy
2106 * This should go away with the new parser API.
2107 */
2108 ret = avcodec_parameters_to_context(ost->parser_avctx, ost->st->codecpar);
2109 if (ret < 0)
2110 return ret;
2111 }
2112
2113 /* initialize bitstream filters for the output stream
2114 * needs to be done here, because the codec id for streamcopy is not
2115 * known until now */
2116 ret = init_output_bsfs(ost);
2117 if (ret < 0)
2118 return ret;
2119
2120 ost->mux_timebase = ost->st->time_base;
2121
2122 ost->initialized = 1;
2123
2124 ret = check_init_output_file(output_files[ost->file_index], ost->file_index);
2125 if (ret < 0)
2126 return ret;
2127
2128 return ret;
2129 }
2130
2131 static int transcode_init(void)
2132 {
2133 int ret = 0, i, j, k;
2134 OutputStream *ost;
2135 InputStream *ist;
2136 char error[1024];
2137
2138 /* init framerate emulation */
2139 for (i = 0; i < nb_input_files; i++) {
2140 InputFile *ifile = input_files[i];
2141 if (ifile->rate_emu)
2142 for (j = 0; j < ifile->nb_streams; j++)
2143 input_streams[j + ifile->ist_index]->start = av_gettime_relative();
2144 }
2145
2146 /* init input streams */
2147 for (i = 0; i < nb_input_streams; i++)
2148 if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
2149 goto dump_format;
2150
2151 /* open each encoder */
2152 for (i = 0; i < nb_output_streams; i++) {
2153 // skip streams fed from filtergraphs until we have a frame for them
2154 if (output_streams[i]->filter)
2155 continue;
2156
2157 ret = init_output_stream(output_streams[i], error, sizeof(error));
2158 if (ret < 0)
2159 goto dump_format;
2160 }
2161
2162
2163 /* discard unused programs */
2164 for (i = 0; i < nb_input_files; i++) {
2165 InputFile *ifile = input_files[i];
2166 for (j = 0; j < ifile->ctx->nb_programs; j++) {
2167 AVProgram *p = ifile->ctx->programs[j];
2168 int discard = AVDISCARD_ALL;
2169
2170 for (k = 0; k < p->nb_stream_indexes; k++)
2171 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2172 discard = AVDISCARD_DEFAULT;
2173 break;
2174 }
2175 p->discard = discard;
2176 }
2177 }
2178
2179 dump_format:
2180 /* dump the stream mapping */
2181 av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2182 for (i = 0; i < nb_input_streams; i++) {
2183 ist = input_streams[i];
2184
2185 for (j = 0; j < ist->nb_filters; j++) {
2186 if (!filtergraph_is_simple(ist->filters[j]->graph)) {
2187 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d (%s) -> %s",
2188 ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2189 ist->filters[j]->name);
2190 if (nb_filtergraphs > 1)
2191 av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2192 av_log(NULL, AV_LOG_INFO, "\n");
2193 }
2194 }
2195 }
2196
2197 for (i = 0; i < nb_output_streams; i++) {
2198 ost = output_streams[i];
2199
2200 if (ost->attachment_filename) {
2201 /* an attached file */
2202 av_log(NULL, AV_LOG_INFO, " File %s -> Stream #%d:%d\n",
2203 ost->attachment_filename, ost->file_index, ost->index);
2204 continue;
2205 }
2206
2207 if (ost->filter && !filtergraph_is_simple(ost->filter->graph)) {
2208 /* output from a complex graph */
2209 av_log(NULL, AV_LOG_INFO, " %s", ost->filter->name);
2210 if (nb_filtergraphs > 1)
2211 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2212
2213 av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2214 ost->index, ost->enc ? ost->enc->name : "?");
2215 continue;
2216 }
2217
2218 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d -> #%d:%d",
2219 input_streams[ost->source_index]->file_index,
2220 input_streams[ost->source_index]->st->index,
2221 ost->file_index,
2222 ost->index);
2223 if (ost->sync_ist != input_streams[ost->source_index])
2224 av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2225 ost->sync_ist->file_index,
2226 ost->sync_ist->st->index);
2227 if (ost->stream_copy)
2228 av_log(NULL, AV_LOG_INFO, " (copy)");
2229 else {
2230 const AVCodec *in_codec = input_streams[ost->source_index]->dec;
2231 const AVCodec *out_codec = ost->enc;
2232 const char *decoder_name = "?";
2233 const char *in_codec_name = "?";
2234 const char *encoder_name = "?";
2235 const char *out_codec_name = "?";
2236 const AVCodecDescriptor *desc;
2237
2238 if (in_codec) {
2239 decoder_name = in_codec->name;
2240 desc = avcodec_descriptor_get(in_codec->id);
2241 if (desc)
2242 in_codec_name = desc->name;
2243 if (!strcmp(decoder_name, in_codec_name))
2244 decoder_name = "native";
2245 }
2246
2247 if (out_codec) {
2248 encoder_name = out_codec->name;
2249 desc = avcodec_descriptor_get(out_codec->id);
2250 if (desc)
2251 out_codec_name = desc->name;
2252 if (!strcmp(encoder_name, out_codec_name))
2253 encoder_name = "native";
2254 }
2255
2256 av_log(NULL, AV_LOG_INFO, " (%s (%s) -> %s (%s))",
2257 in_codec_name, decoder_name,
2258 out_codec_name, encoder_name);
2259 }
2260 av_log(NULL, AV_LOG_INFO, "\n");
2261 }
2262
2263 if (ret) {
2264 av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2265 return ret;
2266 }
2267
2268 return 0;
2269 }
2270
2271 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2272 static int need_output(void)
2273 {
2274 int i;
2275
2276 for (i = 0; i < nb_output_streams; i++) {
2277 OutputStream *ost = output_streams[i];
2278 OutputFile *of = output_files[ost->file_index];
2279 AVFormatContext *os = output_files[ost->file_index]->ctx;
2280
2281 if (ost->finished ||
2282 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2283 continue;
2284 if (ost->frame_number >= ost->max_frames) {
2285 int j;
2286 for (j = 0; j < of->ctx->nb_streams; j++)
2287 output_streams[of->ost_index + j]->finished = 1;
2288 continue;
2289 }
2290
2291 return 1;
2292 }
2293
2294 return 0;
2295 }
2296
2297 static InputFile *select_input_file(void)
2298 {
2299 InputFile *ifile = NULL;
2300 int64_t ipts_min = INT64_MAX;
2301 int i;
2302
2303 for (i = 0; i < nb_input_streams; i++) {
2304 InputStream *ist = input_streams[i];
2305 int64_t ipts = ist->last_dts;
2306
2307 if (ist->discard || input_files[ist->file_index]->eagain)
2308 continue;
2309 if (!input_files[ist->file_index]->eof_reached) {
2310 if (ipts < ipts_min) {
2311 ipts_min = ipts;
2312 ifile = input_files[ist->file_index];
2313 }
2314 }
2315 }
2316
2317 return ifile;
2318 }
2319
2320 #if HAVE_PTHREADS
2321 static void *input_thread(void *arg)
2322 {
2323 InputFile *f = arg;
2324 int ret = 0;
2325
2326 while (!transcoding_finished && ret >= 0) {
2327 AVPacket pkt;
2328 ret = av_read_frame(f->ctx, &pkt);
2329
2330 if (ret == AVERROR(EAGAIN)) {
2331 av_usleep(10000);
2332 ret = 0;
2333 continue;
2334 } else if (ret < 0)
2335 break;
2336
2337 pthread_mutex_lock(&f->fifo_lock);
2338 while (!av_fifo_space(f->fifo))
2339 pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2340
2341 av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2342
2343 pthread_mutex_unlock(&f->fifo_lock);
2344 }
2345
2346 f->finished = 1;
2347 return NULL;
2348 }
2349
2350 static void free_input_threads(void)
2351 {
2352 int i;
2353
2354 if (nb_input_files == 1)
2355 return;
2356
2357 transcoding_finished = 1;
2358
2359 for (i = 0; i < nb_input_files; i++) {
2360 InputFile *f = input_files[i];
2361 AVPacket pkt;
2362
2363 if (!f->fifo || f->joined)
2364 continue;
2365
2366 pthread_mutex_lock(&f->fifo_lock);
2367 while (av_fifo_size(f->fifo)) {
2368 av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2369 av_packet_unref(&pkt);
2370 }
2371 pthread_cond_signal(&f->fifo_cond);
2372 pthread_mutex_unlock(&f->fifo_lock);
2373
2374 pthread_join(f->thread, NULL);
2375 f->joined = 1;
2376
2377 while (av_fifo_size(f->fifo)) {
2378 av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2379 av_packet_unref(&pkt);
2380 }
2381 av_fifo_free(f->fifo);
2382 }
2383 }
2384
2385 static int init_input_threads(void)
2386 {
2387 int i, ret;
2388
2389 if (nb_input_files == 1)
2390 return 0;
2391
2392 for (i = 0; i < nb_input_files; i++) {
2393 InputFile *f = input_files[i];
2394
2395 if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2396 return AVERROR(ENOMEM);
2397
2398 pthread_mutex_init(&f->fifo_lock, NULL);
2399 pthread_cond_init (&f->fifo_cond, NULL);
2400
2401 if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2402 return AVERROR(ret);
2403 }
2404 return 0;
2405 }
2406
2407 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2408 {
2409 int ret = 0;
2410
2411 pthread_mutex_lock(&f->fifo_lock);
2412
2413 if (av_fifo_size(f->fifo)) {
2414 av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2415 pthread_cond_signal(&f->fifo_cond);
2416 } else {
2417 if (f->finished)
2418 ret = AVERROR_EOF;
2419 else
2420 ret = AVERROR(EAGAIN);
2421 }
2422
2423 pthread_mutex_unlock(&f->fifo_lock);
2424
2425 return ret;
2426 }
2427 #endif
2428
2429 static int get_input_packet(InputFile *f, AVPacket *pkt)
2430 {
2431 if (f->rate_emu) {
2432 int i;
2433 for (i = 0; i < f->nb_streams; i++) {
2434 InputStream *ist = input_streams[f->ist_index + i];
2435 int64_t pts = av_rescale(ist->last_dts, 1000000, AV_TIME_BASE);
2436 int64_t now = av_gettime_relative() - ist->start;
2437 if (pts > now)
2438 return AVERROR(EAGAIN);
2439 }
2440 }
2441
2442 #if HAVE_PTHREADS
2443 if (nb_input_files > 1)
2444 return get_input_packet_mt(f, pkt);
2445 #endif
2446 return av_read_frame(f->ctx, pkt);
2447 }
2448
2449 static int got_eagain(void)
2450 {
2451 int i;
2452 for (i = 0; i < nb_input_files; i++)
2453 if (input_files[i]->eagain)
2454 return 1;
2455 return 0;
2456 }
2457
2458 static void reset_eagain(void)
2459 {
2460 int i;
2461 for (i = 0; i < nb_input_files; i++)
2462 input_files[i]->eagain = 0;
2463 }
2464
2465 // set duration to max(tmp, duration) in a proper time base and return duration's time_base
2466 static AVRational duration_max(int64_t tmp, int64_t *duration, AVRational tmp_time_base,
2467 AVRational time_base)
2468 {
2469 int ret;
2470
2471 if (!*duration) {
2472 *duration = tmp;
2473 return tmp_time_base;
2474 }
2475
2476 ret = av_compare_ts(*duration, time_base, tmp, tmp_time_base);
2477 if (ret < 0) {
2478 *duration = tmp;
2479 return tmp_time_base;
2480 }
2481
2482 return time_base;
2483 }
2484
2485 static int seek_to_start(InputFile *ifile, AVFormatContext *is)
2486 {
2487 InputStream *ist;
2488 AVCodecContext *avctx;
2489 int i, ret, has_audio = 0;
2490 int64_t duration = 0;
2491
2492 ret = av_seek_frame(is, -1, is->start_time, 0);
2493 if (ret < 0)
2494 return ret;
2495
2496 for (i = 0; i < ifile->nb_streams; i++) {
2497 ist = input_streams[ifile->ist_index + i];
2498 avctx = ist->dec_ctx;
2499
2500 // flush decoders
2501 if (ist->decoding_needed) {
2502 process_input_packet(ist, NULL, 1);
2503 avcodec_flush_buffers(avctx);
2504 }
2505
2506 /* duration is the length of the last frame in a stream
2507 * when audio stream is present we don't care about
2508 * last video frame length because it's not defined exactly */
2509 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && ist->nb_samples)
2510 has_audio = 1;
2511 }
2512
2513 for (i = 0; i < ifile->nb_streams; i++) {
2514 ist = input_streams[ifile->ist_index + i];
2515 avctx = ist->dec_ctx;
2516
2517 if (has_audio) {
2518 if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && ist->nb_samples) {
2519 AVRational sample_rate = {1, avctx->sample_rate};
2520
2521 duration = av_rescale_q(ist->nb_samples, sample_rate, ist->st->time_base);
2522 } else
2523 continue;
2524 } else {
2525 if (ist->framerate.num) {
2526 duration = av_rescale_q(1, ist->framerate, ist->st->time_base);
2527 } else if (ist->st->avg_frame_rate.num) {
2528 duration = av_rescale_q(1, ist->st->avg_frame_rate, ist->st->time_base);
2529 } else duration = 1;
2530 }
2531 if (!ifile->duration)
2532 ifile->time_base = ist->st->time_base;
2533 /* the total duration of the stream, max_pts - min_pts is
2534 * the duration of the stream without the last frame */
2535 duration += ist->max_pts - ist->min_pts;
2536 ifile->time_base = duration_max(duration, &ifile->duration, ist->st->time_base,
2537 ifile->time_base);
2538 }
2539
2540 if (ifile->loop > 0)
2541 ifile->loop--;
2542
2543 return ret;
2544 }
2545
2546 /*
2547 * Read one packet from an input file and send it for
2548 * - decoding -> lavfi (audio/video)
2549 * - decoding -> encoding -> muxing (subtitles)
2550 * - muxing (streamcopy)
2551 *
2552 * Return
2553 * - 0 -- one packet was read and processed
2554 * - AVERROR(EAGAIN) -- no packets were available for selected file,
2555 * this function should be called again
2556 * - AVERROR_EOF -- this function should not be called again
2557 */
2558 static int process_input(void)
2559 {
2560 InputFile *ifile;
2561 AVFormatContext *is;
2562 InputStream *ist;
2563 AVPacket pkt;
2564 int ret, i, j;
2565 int64_t duration;
2566
2567 /* select the stream that we must read now */
2568 ifile = select_input_file();
2569 /* if none, if is finished */
2570 if (!ifile) {
2571 if (got_eagain()) {
2572 reset_eagain();
2573 av_usleep(10000);
2574 return AVERROR(EAGAIN);
2575 }
2576 av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from.\n");
2577 return AVERROR_EOF;
2578 }
2579
2580 is = ifile->ctx;
2581 ret = get_input_packet(ifile, &pkt);
2582
2583 if (ret == AVERROR(EAGAIN)) {
2584 ifile->eagain = 1;
2585 return ret;
2586 }
2587 if (ret < 0 && ifile->loop) {
2588 if ((ret = seek_to_start(ifile, is)) < 0)
2589 return ret;
2590 ret = get_input_packet(ifile, &pkt);
2591 }
2592 if (ret < 0) {
2593 if (ret != AVERROR_EOF) {
2594 print_error(is->filename, ret);
2595 if (exit_on_error)
2596 exit_program(1);
2597 }
2598 ifile->eof_reached = 1;
2599
2600 for (i = 0; i < ifile->nb_streams; i++) {
2601 ist = input_streams[ifile->ist_index + i];
2602 if (ist->decoding_needed)
2603 process_input_packet(ist, NULL, 0);
2604
2605 /* mark all outputs that don't go through lavfi as finished */
2606 for (j = 0; j < nb_output_streams; j++) {
2607 OutputStream *ost = output_streams[j];
2608
2609 if (ost->source_index == ifile->ist_index + i &&
2610 (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2611 finish_output_stream(ost);
2612 }
2613 }
2614
2615 return AVERROR(EAGAIN);
2616 }
2617
2618 reset_eagain();
2619
2620 if (do_pkt_dump) {
2621 av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2622 is->streams[pkt.stream_index]);
2623 }
2624 /* the following test is needed in case new streams appear
2625 dynamically in stream : we ignore them */
2626 if (pkt.stream_index >= ifile->nb_streams)
2627 goto discard_packet;
2628
2629 ist = input_streams[ifile->ist_index + pkt.stream_index];
2630
2631 ist->data_size += pkt.size;
2632 ist->nb_packets++;
2633
2634 if (ist->discard)
2635 goto discard_packet;
2636
2637 /* add the stream-global side data to the first packet */
2638 if (ist->nb_packets == 1)
2639 for (i = 0; i < ist->st->nb_side_data; i++) {
2640 AVPacketSideData *src_sd = &ist->st->side_data[i];
2641 uint8_t *dst_data;
2642
2643 if (av_packet_get_side_data(&pkt, src_sd->type, NULL))
2644 continue;
2645 if (ist->autorotate && src_sd->type == AV_PKT_DATA_DISPLAYMATRIX)
2646 continue;
2647
2648 dst_data = av_packet_new_side_data(&pkt, src_sd->type, src_sd->size);
2649 if (!dst_data)
2650 exit_program(1);
2651
2652 memcpy(dst_data, src_sd->data, src_sd->size);
2653 }
2654
2655 if (pkt.dts != AV_NOPTS_VALUE)
2656 pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2657 if (pkt.pts != AV_NOPTS_VALUE)
2658 pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2659
2660 if (pkt.pts != AV_NOPTS_VALUE)
2661 pkt.pts *= ist->ts_scale;
2662 if (pkt.dts != AV_NOPTS_VALUE)
2663 pkt.dts *= ist->ts_scale;
2664
2665 if ((ist->dec_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
2666 ist->dec_ctx->codec_type == AVMEDIA_TYPE_AUDIO) &&
2667 pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2668 (is->iformat->flags & AVFMT_TS_DISCONT)) {
2669 int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2670 int64_t delta = pkt_dts - ist->next_dts;
2671
2672 if ((FFABS(delta) > 1LL * dts_delta_threshold * AV_TIME_BASE || pkt_dts + 1 < ist->last_dts) && !copy_ts) {
2673 ifile->ts_offset -= delta;
2674 av_log(NULL, AV_LOG_DEBUG,
2675 "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2676 delta, ifile->ts_offset);
2677 pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2678 if (pkt.pts != AV_NOPTS_VALUE)
2679 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2680 }
2681 }
2682 duration = av_rescale_q(ifile->duration, ifile->time_base, ist->st->time_base);
2683 if (pkt.pts != AV_NOPTS_VALUE) {
2684 pkt.pts += duration;
2685 ist->max_pts = FFMAX(pkt.pts, ist->max_pts);
2686 ist->min_pts = FFMIN(pkt.pts, ist->min_pts);
2687 }
2688
2689 if (pkt.dts != AV_NOPTS_VALUE)
2690 pkt.dts += duration;
2691
2692 process_input_packet(ist, &pkt, 0);
2693
2694 discard_packet:
2695 av_packet_unref(&pkt);
2696
2697 return 0;
2698 }
2699
2700 /*
2701 * The following code is the main loop of the file converter
2702 */
2703 static int transcode(void)
2704 {
2705 int ret, i, need_input = 1;
2706 AVFormatContext *os;
2707 OutputStream *ost;
2708 InputStream *ist;
2709 int64_t timer_start;
2710
2711 ret = transcode_init();
2712 if (ret < 0)
2713 goto fail;
2714
2715 av_log(NULL, AV_LOG_INFO, "Press ctrl-c to stop encoding\n");
2716 term_init();
2717
2718 timer_start = av_gettime_relative();
2719
2720 #if HAVE_PTHREADS
2721 if ((ret = init_input_threads()) < 0)
2722 goto fail;
2723 #endif
2724
2725 while (!received_sigterm) {
2726 /* check if there's any stream where output is still needed */
2727 if (!need_output()) {
2728 av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
2729 break;
2730 }
2731
2732 /* read and process one input packet if needed */
2733 if (need_input) {
2734 ret = process_input();
2735 if (ret == AVERROR_EOF)
2736 need_input = 0;
2737 }
2738
2739 ret = poll_filters();
2740 if (ret < 0 && ret != AVERROR_EOF) {
2741 char errbuf[128];
2742 av_strerror(ret, errbuf, sizeof(errbuf));
2743
2744 av_log(NULL, AV_LOG_ERROR, "Error while filtering: %s\n", errbuf);
2745 break;
2746 }
2747
2748 /* dump report by using the output first video and audio streams */
2749 print_report(0, timer_start);
2750 }
2751 #if HAVE_PTHREADS
2752 free_input_threads();
2753 #endif
2754
2755 /* at the end of stream, we must flush the decoder buffers */
2756 for (i = 0; i < nb_input_streams; i++) {
2757 ist = input_streams[i];
2758 if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
2759 process_input_packet(ist, NULL, 0);
2760 }
2761 }
2762 poll_filters();
2763 flush_encoders();
2764
2765 term_exit();
2766
2767 /* write the trailer if needed and close file */
2768 for (i = 0; i < nb_output_files; i++) {
2769 os = output_files[i]->ctx;
2770 if (!output_files[i]->header_written) {
2771 av_log(NULL, AV_LOG_ERROR,
2772 "Nothing was written into output file %d (%s), because "
2773 "at least one of its streams received no packets.\n",
2774 i, os->filename);
2775 continue;
2776 }
2777 av_write_trailer(os);
2778 }
2779
2780 /* dump report by using the first video and audio streams */
2781 print_report(1, timer_start);
2782
2783 /* close each encoder */
2784 for (i = 0; i < nb_output_streams; i++) {
2785 ost = output_streams[i];
2786 if (ost->encoding_needed) {
2787 av_freep(&ost->enc_ctx->stats_in);
2788 }
2789 }
2790
2791 /* close each decoder */
2792 for (i = 0; i < nb_input_streams; i++) {
2793 ist = input_streams[i];
2794 if (ist->decoding_needed) {
2795 avcodec_close(ist->dec_ctx);
2796 if (ist->hwaccel_uninit)
2797 ist->hwaccel_uninit(ist->dec_ctx);
2798 }
2799 }
2800
2801 av_buffer_unref(&hw_device_ctx);
2802
2803 /* finished ! */
2804 ret = 0;
2805
2806 fail:
2807 #if HAVE_PTHREADS
2808 free_input_threads();
2809 #endif
2810
2811 if (output_streams) {
2812 for (i = 0; i < nb_output_streams; i++) {
2813 ost = output_streams[i];
2814 if (ost) {
2815 if (ost->logfile) {
2816 fclose(ost->logfile);
2817 ost->logfile = NULL;
2818 }
2819 av_free(ost->forced_kf_pts);
2820 av_dict_free(&ost->encoder_opts);
2821 av_dict_free(&ost->resample_opts);
2822 }
2823 }
2824 }
2825 return ret;
2826 }
2827
2828 static int64_t getutime(void)
2829 {
2830 #if HAVE_GETRUSAGE
2831 struct rusage rusage;
2832
2833 getrusage(RUSAGE_SELF, &rusage);
2834 return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
2835 #elif HAVE_GETPROCESSTIMES
2836 HANDLE proc;
2837 FILETIME c, e, k, u;
2838 proc = GetCurrentProcess();
2839 GetProcessTimes(proc, &c, &e, &k, &u);
2840 return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
2841 #else
2842 return av_gettime_relative();
2843 #endif
2844 }
2845
2846 static int64_t getmaxrss(void)
2847 {
2848 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
2849 struct rusage rusage;
2850 getrusage(RUSAGE_SELF, &rusage);
2851 return (int64_t)rusage.ru_maxrss * 1024;
2852 #elif HAVE_GETPROCESSMEMORYINFO
2853 HANDLE proc;
2854 PROCESS_MEMORY_COUNTERS memcounters;
2855 proc = GetCurrentProcess();
2856 memcounters.cb = sizeof(memcounters);
2857 GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
2858 return memcounters.PeakPagefileUsage;
2859 #else
2860 return 0;
2861 #endif
2862 }
2863
2864 int main(int argc, char **argv)
2865 {
2866 int i, ret;
2867 int64_t ti;
2868
2869 register_exit(avconv_cleanup);
2870
2871 av_log_set_flags(AV_LOG_SKIP_REPEATED);
2872 parse_loglevel(argc, argv, options);
2873
2874 avcodec_register_all();
2875 #if CONFIG_AVDEVICE
2876 avdevice_register_all();
2877 #endif
2878 avfilter_register_all();
2879 av_register_all();
2880 avformat_network_init();
2881
2882 show_banner();
2883
2884 /* parse options and open all input/output files */
2885 ret = avconv_parse_options(argc, argv);
2886 if (ret < 0)
2887 exit_program(1);
2888
2889 if (nb_output_files <= 0 && nb_input_files == 0) {
2890 show_usage();
2891 av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
2892 exit_program(1);
2893 }
2894
2895 /* file converter / grab */
2896 if (nb_output_files <= 0) {
2897 fprintf(stderr, "At least one output file must be specified\n");
2898 exit_program(1);
2899 }
2900
2901 for (i = 0; i < nb_output_files; i++) {
2902 if (strcmp(output_files[i]->ctx->oformat->name, "rtp"))
2903 want_sdp = 0;
2904 }
2905
2906 ti = getutime();
2907 if (transcode() < 0)
2908 exit_program(1);
2909 ti = getutime() - ti;
2910 if (do_benchmark) {
2911 int maxrss = getmaxrss() / 1024;
2912 printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss);
2913 }
2914
2915 exit_program(0);
2916 return 0;
2917 }