c8c33c663b65e41cea50748f97159e1ebc9088e2
[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/intreadwrite.h"
42 #include "libavutil/dict.h"
43 #include "libavutil/mathematics.h"
44 #include "libavutil/pixdesc.h"
45 #include "libavutil/avstring.h"
46 #include "libavutil/libm.h"
47 #include "libavutil/imgutils.h"
48 #include "libavutil/time.h"
49 #include "libavformat/os_support.h"
50
51 # include "libavfilter/avfilter.h"
52 # include "libavfilter/buffersrc.h"
53 # include "libavfilter/buffersink.h"
54
55 #if HAVE_SYS_RESOURCE_H
56 #include <sys/time.h>
57 #include <sys/types.h>
58 #include <sys/resource.h>
59 #elif HAVE_GETPROCESSTIMES
60 #include <windows.h>
61 #endif
62 #if HAVE_GETPROCESSMEMORYINFO
63 #include <windows.h>
64 #include <psapi.h>
65 #endif
66
67 #if HAVE_SYS_SELECT_H
68 #include <sys/select.h>
69 #endif
70
71 #if HAVE_PTHREADS
72 #include <pthread.h>
73 #endif
74
75 #include <time.h>
76
77 #include "avconv.h"
78 #include "cmdutils.h"
79
80 #include "libavutil/avassert.h"
81
82 const char program_name[] = "avconv";
83 const int program_birth_year = 2000;
84
85 static FILE *vstats_file;
86
87 static int64_t video_size = 0;
88 static int64_t audio_size = 0;
89 static int64_t extra_size = 0;
90 static int nb_frames_drop = 0;
91
92
93
94 #if HAVE_PTHREADS
95 /* signal to input threads that they should exit; set by the main thread */
96 static int transcoding_finished;
97 #endif
98
99 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
100
101 InputStream **input_streams = NULL;
102 int nb_input_streams = 0;
103 InputFile **input_files = NULL;
104 int nb_input_files = 0;
105
106 OutputStream **output_streams = NULL;
107 int nb_output_streams = 0;
108 OutputFile **output_files = NULL;
109 int nb_output_files = 0;
110
111 FilterGraph **filtergraphs;
112 int nb_filtergraphs;
113
114 static void term_exit(void)
115 {
116 av_log(NULL, AV_LOG_QUIET, "");
117 }
118
119 static volatile int received_sigterm = 0;
120 static volatile int received_nb_signals = 0;
121
122 static void
123 sigterm_handler(int sig)
124 {
125 received_sigterm = sig;
126 received_nb_signals++;
127 term_exit();
128 }
129
130 static void term_init(void)
131 {
132 signal(SIGINT , sigterm_handler); /* Interrupt (ANSI). */
133 signal(SIGTERM, sigterm_handler); /* Termination (ANSI). */
134 #ifdef SIGXCPU
135 signal(SIGXCPU, sigterm_handler);
136 #endif
137 }
138
139 static int decode_interrupt_cb(void *ctx)
140 {
141 return received_nb_signals > 1;
142 }
143
144 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
145
146 static void avconv_cleanup(int ret)
147 {
148 int i, j;
149
150 for (i = 0; i < nb_filtergraphs; i++) {
151 avfilter_graph_free(&filtergraphs[i]->graph);
152 for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
153 av_freep(&filtergraphs[i]->inputs[j]->name);
154 av_freep(&filtergraphs[i]->inputs[j]);
155 }
156 av_freep(&filtergraphs[i]->inputs);
157 for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
158 av_freep(&filtergraphs[i]->outputs[j]->name);
159 av_freep(&filtergraphs[i]->outputs[j]);
160 }
161 av_freep(&filtergraphs[i]->outputs);
162 av_freep(&filtergraphs[i]->graph_desc);
163 av_freep(&filtergraphs[i]);
164 }
165 av_freep(&filtergraphs);
166
167 /* close files */
168 for (i = 0; i < nb_output_files; i++) {
169 AVFormatContext *s = output_files[i]->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(&output_files[i]->opts);
174 av_freep(&output_files[i]);
175 }
176 for (i = 0; i < nb_output_streams; i++) {
177 AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
178 while (bsfc) {
179 AVBitStreamFilterContext *next = bsfc->next;
180 av_bitstream_filter_close(bsfc);
181 bsfc = next;
182 }
183 output_streams[i]->bitstream_filters = NULL;
184 av_frame_free(&output_streams[i]->filtered_frame);
185
186 av_parser_close(output_streams[i]->parser);
187
188 av_freep(&output_streams[i]->forced_keyframes);
189 av_freep(&output_streams[i]->avfilter);
190 av_freep(&output_streams[i]->logfile_prefix);
191 av_freep(&output_streams[i]);
192 }
193 for (i = 0; i < nb_input_files; i++) {
194 avformat_close_input(&input_files[i]->ctx);
195 av_freep(&input_files[i]);
196 }
197 for (i = 0; i < nb_input_streams; i++) {
198 av_frame_free(&input_streams[i]->decoded_frame);
199 av_frame_free(&input_streams[i]->filter_frame);
200 av_dict_free(&input_streams[i]->opts);
201 av_freep(&input_streams[i]->filters);
202 av_freep(&input_streams[i]->hwaccel_device);
203 av_freep(&input_streams[i]);
204 }
205
206 if (vstats_file)
207 fclose(vstats_file);
208 av_free(vstats_filename);
209
210 av_freep(&input_streams);
211 av_freep(&input_files);
212 av_freep(&output_streams);
213 av_freep(&output_files);
214
215 uninit_opts();
216
217 avformat_network_deinit();
218
219 if (received_sigterm) {
220 av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
221 (int) received_sigterm);
222 exit (255);
223 }
224 }
225
226 void assert_avoptions(AVDictionary *m)
227 {
228 AVDictionaryEntry *t;
229 if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
230 av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
231 exit_program(1);
232 }
233 }
234
235 static void abort_codec_experimental(AVCodec *c, int encoder)
236 {
237 const char *codec_string = encoder ? "encoder" : "decoder";
238 AVCodec *codec;
239 av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
240 "results.\nAdd '-strict experimental' if you want to use it.\n",
241 codec_string, c->name);
242 codec = encoder ? avcodec_find_encoder(c->id) : avcodec_find_decoder(c->id);
243 if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
244 av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
245 codec_string, codec->name);
246 exit_program(1);
247 }
248
249 /*
250 * Update the requested input sample format based on the output sample format.
251 * This is currently only used to request float output from decoders which
252 * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
253 * Ideally this will be removed in the future when decoders do not do format
254 * conversion and only output in their native format.
255 */
256 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
257 AVCodecContext *enc)
258 {
259 /* if sample formats match or a decoder sample format has already been
260 requested, just return */
261 if (enc->sample_fmt == dec->sample_fmt ||
262 dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
263 return;
264
265 /* if decoder supports more than one output format */
266 if (dec_codec && dec_codec->sample_fmts &&
267 dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
268 dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
269 const enum AVSampleFormat *p;
270 int min_dec = INT_MAX, min_inc = INT_MAX;
271 enum AVSampleFormat dec_fmt = AV_SAMPLE_FMT_NONE;
272 enum AVSampleFormat inc_fmt = AV_SAMPLE_FMT_NONE;
273
274 /* find a matching sample format in the encoder */
275 for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
276 if (*p == enc->sample_fmt) {
277 dec->request_sample_fmt = *p;
278 return;
279 } else {
280 enum AVSampleFormat dfmt = av_get_packed_sample_fmt(*p);
281 enum AVSampleFormat efmt = av_get_packed_sample_fmt(enc->sample_fmt);
282 int fmt_diff = 32 * abs(dfmt - efmt);
283 if (av_sample_fmt_is_planar(*p) !=
284 av_sample_fmt_is_planar(enc->sample_fmt))
285 fmt_diff++;
286 if (dfmt == efmt) {
287 min_inc = fmt_diff;
288 inc_fmt = *p;
289 } else if (dfmt > efmt) {
290 if (fmt_diff < min_inc) {
291 min_inc = fmt_diff;
292 inc_fmt = *p;
293 }
294 } else {
295 if (fmt_diff < min_dec) {
296 min_dec = fmt_diff;
297 dec_fmt = *p;
298 }
299 }
300 }
301 }
302
303 /* if none match, provide the one that matches quality closest */
304 dec->request_sample_fmt = min_inc != INT_MAX ? inc_fmt : dec_fmt;
305 }
306 }
307
308 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
309 {
310 AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
311 AVCodecContext *avctx = ost->st->codec;
312 int ret;
313
314 /*
315 * Audio encoders may split the packets -- #frames in != #packets out.
316 * But there is no reordering, so we can limit the number of output packets
317 * by simply dropping them here.
318 * Counting encoded video frames needs to be done separately because of
319 * reordering, see do_video_out()
320 */
321 if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
322 if (ost->frame_number >= ost->max_frames) {
323 av_free_packet(pkt);
324 return;
325 }
326 ost->frame_number++;
327 }
328
329 while (bsfc) {
330 AVPacket new_pkt = *pkt;
331 int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
332 &new_pkt.data, &new_pkt.size,
333 pkt->data, pkt->size,
334 pkt->flags & AV_PKT_FLAG_KEY);
335 if (a > 0) {
336 av_free_packet(pkt);
337 new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
338 av_buffer_default_free, NULL, 0);
339 if (!new_pkt.buf)
340 exit_program(1);
341 } else if (a < 0) {
342 av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
343 bsfc->filter->name, pkt->stream_index,
344 avctx->codec ? avctx->codec->name : "copy");
345 print_error("", a);
346 if (exit_on_error)
347 exit_program(1);
348 }
349 *pkt = new_pkt;
350
351 bsfc = bsfc->next;
352 }
353
354 if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS) &&
355 ost->last_mux_dts != AV_NOPTS_VALUE &&
356 pkt->dts < ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT)) {
357 av_log(NULL, AV_LOG_WARNING, "Non-monotonous DTS in output stream "
358 "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
359 ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
360 if (exit_on_error) {
361 av_log(NULL, AV_LOG_FATAL, "aborting.\n");
362 exit_program(1);
363 }
364 av_log(NULL, AV_LOG_WARNING, "changing to %"PRId64". This may result "
365 "in incorrect timestamps in the output file.\n",
366 ost->last_mux_dts + 1);
367 pkt->dts = ost->last_mux_dts + 1;
368 if (pkt->pts != AV_NOPTS_VALUE)
369 pkt->pts = FFMAX(pkt->pts, pkt->dts);
370 }
371 ost->last_mux_dts = pkt->dts;
372
373 pkt->stream_index = ost->index;
374 ret = av_interleaved_write_frame(s, pkt);
375 if (ret < 0) {
376 print_error("av_interleaved_write_frame()", ret);
377 exit_program(1);
378 }
379 }
380
381 static int check_recording_time(OutputStream *ost)
382 {
383 OutputFile *of = output_files[ost->file_index];
384
385 if (of->recording_time != INT64_MAX &&
386 av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
387 AV_TIME_BASE_Q) >= 0) {
388 ost->finished = 1;
389 return 0;
390 }
391 return 1;
392 }
393
394 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
395 AVFrame *frame)
396 {
397 AVCodecContext *enc = ost->st->codec;
398 AVPacket pkt;
399 int got_packet = 0;
400
401 av_init_packet(&pkt);
402 pkt.data = NULL;
403 pkt.size = 0;
404
405 if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
406 frame->pts = ost->sync_opts;
407 ost->sync_opts = frame->pts + frame->nb_samples;
408
409 if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
410 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
411 exit_program(1);
412 }
413
414 if (got_packet) {
415 if (pkt.pts != AV_NOPTS_VALUE)
416 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
417 if (pkt.dts != AV_NOPTS_VALUE)
418 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
419 if (pkt.duration > 0)
420 pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
421
422 write_frame(s, &pkt, ost);
423
424 audio_size += pkt.size;
425 }
426 }
427
428 static void do_subtitle_out(AVFormatContext *s,
429 OutputStream *ost,
430 InputStream *ist,
431 AVSubtitle *sub,
432 int64_t pts)
433 {
434 static uint8_t *subtitle_out = NULL;
435 int subtitle_out_max_size = 1024 * 1024;
436 int subtitle_out_size, nb, i;
437 AVCodecContext *enc;
438 AVPacket pkt;
439
440 if (pts == AV_NOPTS_VALUE) {
441 av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
442 if (exit_on_error)
443 exit_program(1);
444 return;
445 }
446
447 enc = ost->st->codec;
448
449 if (!subtitle_out) {
450 subtitle_out = av_malloc(subtitle_out_max_size);
451 }
452
453 /* Note: DVB subtitle need one packet to draw them and one other
454 packet to clear them */
455 /* XXX: signal it in the codec context ? */
456 if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
457 nb = 2;
458 else
459 nb = 1;
460
461 for (i = 0; i < nb; i++) {
462 ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
463 if (!check_recording_time(ost))
464 return;
465
466 sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
467 // start_display_time is required to be 0
468 sub->pts += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
469 sub->end_display_time -= sub->start_display_time;
470 sub->start_display_time = 0;
471 subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
472 subtitle_out_max_size, sub);
473 if (subtitle_out_size < 0) {
474 av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
475 exit_program(1);
476 }
477
478 av_init_packet(&pkt);
479 pkt.data = subtitle_out;
480 pkt.size = subtitle_out_size;
481 pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
482 if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
483 /* XXX: the pts correction is handled here. Maybe handling
484 it in the codec would be better */
485 if (i == 0)
486 pkt.pts += 90 * sub->start_display_time;
487 else
488 pkt.pts += 90 * sub->end_display_time;
489 }
490 write_frame(s, &pkt, ost);
491 }
492 }
493
494 static void do_video_out(AVFormatContext *s,
495 OutputStream *ost,
496 AVFrame *in_picture,
497 int *frame_size)
498 {
499 int ret, format_video_sync;
500 AVPacket pkt;
501 AVCodecContext *enc = ost->st->codec;
502
503 *frame_size = 0;
504
505 format_video_sync = video_sync_method;
506 if (format_video_sync == VSYNC_AUTO)
507 format_video_sync = (s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH :
508 (s->oformat->flags & AVFMT_VARIABLE_FPS) ? VSYNC_VFR : VSYNC_CFR;
509 if (format_video_sync != VSYNC_PASSTHROUGH &&
510 ost->frame_number &&
511 in_picture->pts != AV_NOPTS_VALUE &&
512 in_picture->pts < ost->sync_opts) {
513 nb_frames_drop++;
514 av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
515 return;
516 }
517
518 if (in_picture->pts == AV_NOPTS_VALUE)
519 in_picture->pts = ost->sync_opts;
520 ost->sync_opts = in_picture->pts;
521
522
523 if (!ost->frame_number)
524 ost->first_pts = in_picture->pts;
525
526 av_init_packet(&pkt);
527 pkt.data = NULL;
528 pkt.size = 0;
529
530 if (ost->frame_number >= ost->max_frames)
531 return;
532
533 if (s->oformat->flags & AVFMT_RAWPICTURE &&
534 enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
535 /* raw pictures are written as AVPicture structure to
536 avoid any copies. We support temporarily the older
537 method. */
538 enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
539 enc->coded_frame->top_field_first = in_picture->top_field_first;
540 pkt.data = (uint8_t *)in_picture;
541 pkt.size = sizeof(AVPicture);
542 pkt.pts = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
543 pkt.flags |= AV_PKT_FLAG_KEY;
544
545 write_frame(s, &pkt, ost);
546 } else {
547 int got_packet;
548
549 if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME) &&
550 ost->top_field_first >= 0)
551 in_picture->top_field_first = !!ost->top_field_first;
552
553 in_picture->quality = ost->st->codec->global_quality;
554 if (!enc->me_threshold)
555 in_picture->pict_type = 0;
556 if (ost->forced_kf_index < ost->forced_kf_count &&
557 in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
558 in_picture->pict_type = AV_PICTURE_TYPE_I;
559 ost->forced_kf_index++;
560 }
561 ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
562 if (ret < 0) {
563 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
564 exit_program(1);
565 }
566
567 if (got_packet) {
568 if (pkt.pts != AV_NOPTS_VALUE)
569 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
570 if (pkt.dts != AV_NOPTS_VALUE)
571 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
572
573 write_frame(s, &pkt, ost);
574 *frame_size = pkt.size;
575 video_size += pkt.size;
576
577 /* if two pass, output log */
578 if (ost->logfile && enc->stats_out) {
579 fprintf(ost->logfile, "%s", enc->stats_out);
580 }
581 }
582 }
583 ost->sync_opts++;
584 /*
585 * For video, number of frames in == number of packets out.
586 * But there may be reordering, so we can't throw away frames on encoder
587 * flush, we need to limit them here, before they go into encoder.
588 */
589 ost->frame_number++;
590 }
591
592 static double psnr(double d)
593 {
594 return -10.0 * log(d) / log(10.0);
595 }
596
597 static void do_video_stats(OutputStream *ost, int frame_size)
598 {
599 AVCodecContext *enc;
600 int frame_number;
601 double ti1, bitrate, avg_bitrate;
602
603 /* this is executed just the first time do_video_stats is called */
604 if (!vstats_file) {
605 vstats_file = fopen(vstats_filename, "w");
606 if (!vstats_file) {
607 perror("fopen");
608 exit_program(1);
609 }
610 }
611
612 enc = ost->st->codec;
613 if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
614 frame_number = ost->frame_number;
615 fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
616 if (enc->flags&CODEC_FLAG_PSNR)
617 fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
618
619 fprintf(vstats_file,"f_size= %6d ", frame_size);
620 /* compute pts value */
621 ti1 = ost->sync_opts * av_q2d(enc->time_base);
622 if (ti1 < 0.01)
623 ti1 = 0.01;
624
625 bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
626 avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
627 fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
628 (double)video_size / 1024, ti1, bitrate, avg_bitrate);
629 fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
630 }
631 }
632
633 /*
634 * Read one frame for lavfi output for ost and encode it.
635 */
636 static int poll_filter(OutputStream *ost)
637 {
638 OutputFile *of = output_files[ost->file_index];
639 AVFrame *filtered_frame = NULL;
640 int frame_size, ret;
641
642 if (!ost->filtered_frame && !(ost->filtered_frame = av_frame_alloc())) {
643 return AVERROR(ENOMEM);
644 }
645 filtered_frame = ost->filtered_frame;
646
647 if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
648 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
649 ret = av_buffersink_get_samples(ost->filter->filter, filtered_frame,
650 ost->st->codec->frame_size);
651 else
652 ret = av_buffersink_get_frame(ost->filter->filter, filtered_frame);
653
654 if (ret < 0)
655 return ret;
656
657 if (filtered_frame->pts != AV_NOPTS_VALUE) {
658 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
659 filtered_frame->pts = av_rescale_q(filtered_frame->pts,
660 ost->filter->filter->inputs[0]->time_base,
661 ost->st->codec->time_base) -
662 av_rescale_q(start_time,
663 AV_TIME_BASE_Q,
664 ost->st->codec->time_base);
665 }
666
667 switch (ost->filter->filter->inputs[0]->type) {
668 case AVMEDIA_TYPE_VIDEO:
669 if (!ost->frame_aspect_ratio)
670 ost->st->codec->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
671
672 do_video_out(of->ctx, ost, filtered_frame, &frame_size);
673 if (vstats_filename && frame_size)
674 do_video_stats(ost, frame_size);
675 break;
676 case AVMEDIA_TYPE_AUDIO:
677 do_audio_out(of->ctx, ost, filtered_frame);
678 break;
679 default:
680 // TODO support subtitle filters
681 av_assert0(0);
682 }
683
684 av_frame_unref(filtered_frame);
685
686 return 0;
687 }
688
689 /*
690 * Read as many frames from possible from lavfi and encode them.
691 *
692 * Always read from the active stream with the lowest timestamp. If no frames
693 * are available for it then return EAGAIN and wait for more input. This way we
694 * can use lavfi sources that generate unlimited amount of frames without memory
695 * usage exploding.
696 */
697 static int poll_filters(void)
698 {
699 int i, j, ret = 0;
700
701 while (ret >= 0 && !received_sigterm) {
702 OutputStream *ost = NULL;
703 int64_t min_pts = INT64_MAX;
704
705 /* choose output stream with the lowest timestamp */
706 for (i = 0; i < nb_output_streams; i++) {
707 int64_t pts = output_streams[i]->sync_opts;
708
709 if (!output_streams[i]->filter || output_streams[i]->finished)
710 continue;
711
712 pts = av_rescale_q(pts, output_streams[i]->st->codec->time_base,
713 AV_TIME_BASE_Q);
714 if (pts < min_pts) {
715 min_pts = pts;
716 ost = output_streams[i];
717 }
718 }
719
720 if (!ost)
721 break;
722
723 ret = poll_filter(ost);
724
725 if (ret == AVERROR_EOF) {
726 OutputFile *of = output_files[ost->file_index];
727
728 ost->finished = 1;
729
730 if (of->shortest) {
731 for (j = 0; j < of->ctx->nb_streams; j++)
732 output_streams[of->ost_index + j]->finished = 1;
733 }
734
735 ret = 0;
736 } else if (ret == AVERROR(EAGAIN))
737 return 0;
738 }
739
740 return ret;
741 }
742
743 static void print_report(int is_last_report, int64_t timer_start)
744 {
745 char buf[1024];
746 OutputStream *ost;
747 AVFormatContext *oc;
748 int64_t total_size;
749 AVCodecContext *enc;
750 int frame_number, vid, i;
751 double bitrate, ti1, pts;
752 static int64_t last_time = -1;
753 static int qp_histogram[52];
754
755 if (!print_stats && !is_last_report)
756 return;
757
758 if (!is_last_report) {
759 int64_t cur_time;
760 /* display the report every 0.5 seconds */
761 cur_time = av_gettime();
762 if (last_time == -1) {
763 last_time = cur_time;
764 return;
765 }
766 if ((cur_time - last_time) < 500000)
767 return;
768 last_time = cur_time;
769 }
770
771
772 oc = output_files[0]->ctx;
773
774 total_size = avio_size(oc->pb);
775 if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
776 total_size = avio_tell(oc->pb);
777 if (total_size < 0) {
778 char errbuf[128];
779 av_strerror(total_size, errbuf, sizeof(errbuf));
780 av_log(NULL, AV_LOG_VERBOSE, "Bitrate not available, "
781 "avio_tell() failed: %s\n", errbuf);
782 total_size = 0;
783 }
784
785 buf[0] = '\0';
786 ti1 = 1e10;
787 vid = 0;
788 for (i = 0; i < nb_output_streams; i++) {
789 float q = -1;
790 ost = output_streams[i];
791 enc = ost->st->codec;
792 if (!ost->stream_copy && enc->coded_frame)
793 q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
794 if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
795 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
796 }
797 if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
798 float t = (av_gettime() - timer_start) / 1000000.0;
799
800 frame_number = ost->frame_number;
801 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
802 frame_number, (t > 1) ? (int)(frame_number / t + 0.5) : 0, q);
803 if (is_last_report)
804 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
805 if (qp_hist) {
806 int j;
807 int qp = lrintf(q);
808 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
809 qp_histogram[qp]++;
810 for (j = 0; j < 32; j++)
811 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
812 }
813 if (enc->flags&CODEC_FLAG_PSNR) {
814 int j;
815 double error, error_sum = 0;
816 double scale, scale_sum = 0;
817 char type[3] = { 'Y','U','V' };
818 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
819 for (j = 0; j < 3; j++) {
820 if (is_last_report) {
821 error = enc->error[j];
822 scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
823 } else {
824 error = enc->coded_frame->error[j];
825 scale = enc->width * enc->height * 255.0 * 255.0;
826 }
827 if (j)
828 scale /= 4;
829 error_sum += error;
830 scale_sum += scale;
831 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
832 }
833 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
834 }
835 vid = 1;
836 }
837 /* compute min output value */
838 pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
839 if ((pts < ti1) && (pts > 0))
840 ti1 = pts;
841 }
842 if (ti1 < 0.01)
843 ti1 = 0.01;
844
845 bitrate = (double)(total_size * 8) / ti1 / 1000.0;
846
847 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
848 "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
849 (double)total_size / 1024, ti1, bitrate);
850
851 if (nb_frames_drop)
852 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " drop=%d",
853 nb_frames_drop);
854
855 av_log(NULL, AV_LOG_INFO, "%s \r", buf);
856
857 fflush(stderr);
858
859 if (is_last_report) {
860 int64_t raw = audio_size + video_size + extra_size;
861 float percent = -1.0;
862
863 if (raw)
864 percent = 100.0 * (total_size - raw) / raw;
865
866 av_log(NULL, AV_LOG_INFO, "\n");
867 av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead: ",
868 video_size / 1024.0,
869 audio_size / 1024.0,
870 extra_size / 1024.0,
871 if (percent >= 0.0)
872 av_log(NULL, AV_LOG_INFO, "%f%%", percent);
873 else
874 av_log(NULL, AV_LOG_INFO, "unknown");
875 av_log(NULL, AV_LOG_INFO, "\n");
876 }
877 }
878
879 static void flush_encoders(void)
880 {
881 int i, ret;
882
883 for (i = 0; i < nb_output_streams; i++) {
884 OutputStream *ost = output_streams[i];
885 AVCodecContext *enc = ost->st->codec;
886 AVFormatContext *os = output_files[ost->file_index]->ctx;
887 int stop_encoding = 0;
888
889 if (!ost->encoding_needed)
890 continue;
891
892 if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
893 continue;
894 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
895 continue;
896
897 for (;;) {
898 int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
899 const char *desc;
900 int64_t *size;
901
902 switch (ost->st->codec->codec_type) {
903 case AVMEDIA_TYPE_AUDIO:
904 encode = avcodec_encode_audio2;
905 desc = "Audio";
906 size = &audio_size;
907 break;
908 case AVMEDIA_TYPE_VIDEO:
909 encode = avcodec_encode_video2;
910 desc = "Video";
911 size = &video_size;
912 break;
913 default:
914 stop_encoding = 1;
915 }
916
917 if (encode) {
918 AVPacket pkt;
919 int got_packet;
920 av_init_packet(&pkt);
921 pkt.data = NULL;
922 pkt.size = 0;
923
924 ret = encode(enc, &pkt, NULL, &got_packet);
925 if (ret < 0) {
926 av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
927 exit_program(1);
928 }
929 *size += ret;
930 if (ost->logfile && enc->stats_out) {
931 fprintf(ost->logfile, "%s", enc->stats_out);
932 }
933 if (!got_packet) {
934 stop_encoding = 1;
935 break;
936 }
937 if (pkt.pts != AV_NOPTS_VALUE)
938 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
939 if (pkt.dts != AV_NOPTS_VALUE)
940 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
941 if (pkt.duration > 0)
942 pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
943 write_frame(os, &pkt, ost);
944 }
945
946 if (stop_encoding)
947 break;
948 }
949 }
950 }
951
952 /*
953 * Check whether a packet from ist should be written into ost at this time
954 */
955 static int check_output_constraints(InputStream *ist, OutputStream *ost)
956 {
957 OutputFile *of = output_files[ost->file_index];
958 int ist_index = input_files[ist->file_index]->ist_index + ist->st->index;
959
960 if (ost->source_index != ist_index)
961 return 0;
962
963 if (of->start_time != AV_NOPTS_VALUE && ist->last_dts < of->start_time)
964 return 0;
965
966 return 1;
967 }
968
969 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
970 {
971 OutputFile *of = output_files[ost->file_index];
972 InputFile *f = input_files [ist->file_index];
973 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
974 int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
975 AVPacket opkt;
976
977 av_init_packet(&opkt);
978
979 if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
980 !ost->copy_initial_nonkeyframes)
981 return;
982
983 if (of->recording_time != INT64_MAX &&
984 ist->last_dts >= of->recording_time + start_time) {
985 ost->finished = 1;
986 return;
987 }
988
989 if (f->recording_time != INT64_MAX) {
990 start_time = f->ctx->start_time;
991 if (f->start_time != AV_NOPTS_VALUE)
992 start_time += f->start_time;
993 if (ist->last_dts >= f->recording_time + start_time) {
994 ost->finished = 1;
995 return;
996 }
997 }
998
999 /* force the input stream PTS */
1000 if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1001 audio_size += pkt->size;
1002 else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1003 video_size += pkt->size;
1004 ost->sync_opts++;
1005 }
1006
1007 if (pkt->pts != AV_NOPTS_VALUE)
1008 opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1009 else
1010 opkt.pts = AV_NOPTS_VALUE;
1011
1012 if (pkt->dts == AV_NOPTS_VALUE)
1013 opkt.dts = av_rescale_q(ist->last_dts, AV_TIME_BASE_Q, ost->st->time_base);
1014 else
1015 opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1016 opkt.dts -= ost_tb_start_time;
1017
1018 opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1019 opkt.flags = pkt->flags;
1020
1021 // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1022 if ( ost->st->codec->codec_id != AV_CODEC_ID_H264
1023 && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1024 && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1025 && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1026 ) {
1027 if (av_parser_change(ost->parser, ost->st->codec,
1028 &opkt.data, &opkt.size,
1029 pkt->data, pkt->size,
1030 pkt->flags & AV_PKT_FLAG_KEY)) {
1031 opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1032 if (!opkt.buf)
1033 exit_program(1);
1034 }
1035 } else {
1036 opkt.data = pkt->data;
1037 opkt.size = pkt->size;
1038 }
1039
1040 write_frame(of->ctx, &opkt, ost);
1041 ost->st->codec->frame_number++;
1042 }
1043
1044 int guess_input_channel_layout(InputStream *ist)
1045 {
1046 AVCodecContext *dec = ist->st->codec;
1047
1048 if (!dec->channel_layout) {
1049 char layout_name[256];
1050
1051 dec->channel_layout = av_get_default_channel_layout(dec->channels);
1052 if (!dec->channel_layout)
1053 return 0;
1054 av_get_channel_layout_string(layout_name, sizeof(layout_name),
1055 dec->channels, dec->channel_layout);
1056 av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for Input Stream "
1057 "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1058 }
1059 return 1;
1060 }
1061
1062 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1063 {
1064 AVFrame *decoded_frame, *f;
1065 AVCodecContext *avctx = ist->st->codec;
1066 int i, ret, err = 0, resample_changed;
1067
1068 if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1069 return AVERROR(ENOMEM);
1070 if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1071 return AVERROR(ENOMEM);
1072 decoded_frame = ist->decoded_frame;
1073
1074 ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1075 if (!*got_output || ret < 0) {
1076 if (!pkt->size) {
1077 for (i = 0; i < ist->nb_filters; i++)
1078 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1079 }
1080 return ret;
1081 }
1082
1083 /* if the decoder provides a pts, use it instead of the last packet pts.
1084 the decoder could be delaying output by a packet or more. */
1085 if (decoded_frame->pts != AV_NOPTS_VALUE)
1086 ist->next_dts = decoded_frame->pts;
1087 else if (pkt->pts != AV_NOPTS_VALUE) {
1088 decoded_frame->pts = pkt->pts;
1089 pkt->pts = AV_NOPTS_VALUE;
1090 }
1091
1092 resample_changed = ist->resample_sample_fmt != decoded_frame->format ||
1093 ist->resample_channels != avctx->channels ||
1094 ist->resample_channel_layout != decoded_frame->channel_layout ||
1095 ist->resample_sample_rate != decoded_frame->sample_rate;
1096 if (resample_changed) {
1097 char layout1[64], layout2[64];
1098
1099 if (!guess_input_channel_layout(ist)) {
1100 av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1101 "layout for Input Stream #%d.%d\n", ist->file_index,
1102 ist->st->index);
1103 exit_program(1);
1104 }
1105 decoded_frame->channel_layout = avctx->channel_layout;
1106
1107 av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1108 ist->resample_channel_layout);
1109 av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1110 decoded_frame->channel_layout);
1111
1112 av_log(NULL, AV_LOG_INFO,
1113 "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",
1114 ist->file_index, ist->st->index,
1115 ist->resample_sample_rate, av_get_sample_fmt_name(ist->resample_sample_fmt),
1116 ist->resample_channels, layout1,
1117 decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1118 avctx->channels, layout2);
1119
1120 ist->resample_sample_fmt = decoded_frame->format;
1121 ist->resample_sample_rate = decoded_frame->sample_rate;
1122 ist->resample_channel_layout = decoded_frame->channel_layout;
1123 ist->resample_channels = avctx->channels;
1124
1125 for (i = 0; i < nb_filtergraphs; i++)
1126 if (ist_in_filtergraph(filtergraphs[i], ist) &&
1127 configure_filtergraph(filtergraphs[i]) < 0) {
1128 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1129 exit_program(1);
1130 }
1131 }
1132
1133 if (decoded_frame->pts != AV_NOPTS_VALUE)
1134 decoded_frame->pts = av_rescale_q(decoded_frame->pts,
1135 ist->st->time_base,
1136 (AVRational){1, ist->st->codec->sample_rate});
1137 for (i = 0; i < ist->nb_filters; i++) {
1138 if (i < ist->nb_filters - 1) {
1139 f = ist->filter_frame;
1140 err = av_frame_ref(f, decoded_frame);
1141 if (err < 0)
1142 break;
1143 } else
1144 f = decoded_frame;
1145
1146 err = av_buffersrc_add_frame(ist->filters[i]->filter, f);
1147 if (err < 0)
1148 break;
1149 }
1150
1151 av_frame_unref(ist->filter_frame);
1152 av_frame_unref(decoded_frame);
1153 return err < 0 ? err : ret;
1154 }
1155
1156 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1157 {
1158 AVFrame *decoded_frame, *f;
1159 int i, ret = 0, err = 0, resample_changed;
1160
1161 if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1162 return AVERROR(ENOMEM);
1163 if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1164 return AVERROR(ENOMEM);
1165 decoded_frame = ist->decoded_frame;
1166
1167 ret = avcodec_decode_video2(ist->st->codec,
1168 decoded_frame, got_output, pkt);
1169 if (!*got_output || ret < 0) {
1170 if (!pkt->size) {
1171 for (i = 0; i < ist->nb_filters; i++)
1172 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1173 }
1174 return ret;
1175 }
1176
1177 if (ist->hwaccel_retrieve_data && decoded_frame->format == ist->hwaccel_pix_fmt) {
1178 err = ist->hwaccel_retrieve_data(ist->st->codec, decoded_frame);
1179 if (err < 0)
1180 goto fail;
1181 }
1182 ist->hwaccel_retrieved_pix_fmt = decoded_frame->format;
1183
1184 decoded_frame->pts = guess_correct_pts(&ist->pts_ctx, decoded_frame->pkt_pts,
1185 decoded_frame->pkt_dts);
1186 pkt->size = 0;
1187
1188 if (ist->st->sample_aspect_ratio.num)
1189 decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1190
1191 resample_changed = ist->resample_width != decoded_frame->width ||
1192 ist->resample_height != decoded_frame->height ||
1193 ist->resample_pix_fmt != decoded_frame->format;
1194 if (resample_changed) {
1195 av_log(NULL, AV_LOG_INFO,
1196 "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1197 ist->file_index, ist->st->index,
1198 ist->resample_width, ist->resample_height, av_get_pix_fmt_name(ist->resample_pix_fmt),
1199 decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1200
1201 ret = poll_filters();
1202 if (ret < 0 && (ret != AVERROR_EOF && ret != AVERROR(EAGAIN)))
1203 av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
1204
1205 ist->resample_width = decoded_frame->width;
1206 ist->resample_height = decoded_frame->height;
1207 ist->resample_pix_fmt = decoded_frame->format;
1208
1209 for (i = 0; i < nb_filtergraphs; i++)
1210 if (ist_in_filtergraph(filtergraphs[i], ist) &&
1211 configure_filtergraph(filtergraphs[i]) < 0) {
1212 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1213 exit_program(1);
1214 }
1215 }
1216
1217 for (i = 0; i < ist->nb_filters; i++) {
1218 if (i < ist->nb_filters - 1) {
1219 f = ist->filter_frame;
1220 err = av_frame_ref(f, decoded_frame);
1221 if (err < 0)
1222 break;
1223 } else
1224 f = decoded_frame;
1225
1226 err = av_buffersrc_add_frame(ist->filters[i]->filter, f);
1227 if (err < 0)
1228 break;
1229 }
1230
1231 fail:
1232 av_frame_unref(ist->filter_frame);
1233 av_frame_unref(decoded_frame);
1234 return err < 0 ? err : ret;
1235 }
1236
1237 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1238 {
1239 AVSubtitle subtitle;
1240 int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1241 &subtitle, got_output, pkt);
1242 if (ret < 0)
1243 return ret;
1244 if (!*got_output)
1245 return ret;
1246
1247 for (i = 0; i < nb_output_streams; i++) {
1248 OutputStream *ost = output_streams[i];
1249
1250 if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1251 continue;
1252
1253 do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pkt->pts);
1254 }
1255
1256 avsubtitle_free(&subtitle);
1257 return ret;
1258 }
1259
1260 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1261 static int output_packet(InputStream *ist, const AVPacket *pkt)
1262 {
1263 int i;
1264 int got_output;
1265 AVPacket avpkt;
1266
1267 if (ist->next_dts == AV_NOPTS_VALUE)
1268 ist->next_dts = ist->last_dts;
1269
1270 if (pkt == NULL) {
1271 /* EOF handling */
1272 av_init_packet(&avpkt);
1273 avpkt.data = NULL;
1274 avpkt.size = 0;
1275 goto handle_eof;
1276 } else {
1277 avpkt = *pkt;
1278 }
1279
1280 if (pkt->dts != AV_NOPTS_VALUE)
1281 ist->next_dts = ist->last_dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1282
1283 // while we have more to decode or while the decoder did output something on EOF
1284 while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1285 int ret = 0;
1286 handle_eof:
1287
1288 ist->last_dts = ist->next_dts;
1289
1290 if (avpkt.size && avpkt.size != pkt->size) {
1291 av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1292 "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1293 ist->showed_multi_packet_warning = 1;
1294 }
1295
1296 switch (ist->st->codec->codec_type) {
1297 case AVMEDIA_TYPE_AUDIO:
1298 ret = decode_audio (ist, &avpkt, &got_output);
1299 break;
1300 case AVMEDIA_TYPE_VIDEO:
1301 ret = decode_video (ist, &avpkt, &got_output);
1302 if (avpkt.duration)
1303 ist->next_dts += av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1304 else if (ist->st->avg_frame_rate.num)
1305 ist->next_dts += av_rescale_q(1, av_inv_q(ist->st->avg_frame_rate),
1306 AV_TIME_BASE_Q);
1307 else if (ist->st->codec->time_base.num != 0) {
1308 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 :
1309 ist->st->codec->ticks_per_frame;
1310 ist->next_dts += av_rescale_q(ticks, ist->st->codec->time_base, AV_TIME_BASE_Q);
1311 }
1312 break;
1313 case AVMEDIA_TYPE_SUBTITLE:
1314 ret = transcode_subtitles(ist, &avpkt, &got_output);
1315 break;
1316 default:
1317 return -1;
1318 }
1319
1320 if (ret < 0)
1321 return ret;
1322 // touch data and size only if not EOF
1323 if (pkt) {
1324 avpkt.data += ret;
1325 avpkt.size -= ret;
1326 }
1327 if (!got_output) {
1328 continue;
1329 }
1330 }
1331
1332 /* handle stream copy */
1333 if (!ist->decoding_needed) {
1334 ist->last_dts = ist->next_dts;
1335 switch (ist->st->codec->codec_type) {
1336 case AVMEDIA_TYPE_AUDIO:
1337 ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1338 ist->st->codec->sample_rate;
1339 break;
1340 case AVMEDIA_TYPE_VIDEO:
1341 if (ist->st->codec->time_base.num != 0) {
1342 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1343 ist->next_dts += ((int64_t)AV_TIME_BASE *
1344 ist->st->codec->time_base.num * ticks) /
1345 ist->st->codec->time_base.den;
1346 }
1347 break;
1348 }
1349 }
1350 for (i = 0; pkt && i < nb_output_streams; i++) {
1351 OutputStream *ost = output_streams[i];
1352
1353 if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1354 continue;
1355
1356 do_streamcopy(ist, ost, pkt);
1357 }
1358
1359 return 0;
1360 }
1361
1362 static void print_sdp(void)
1363 {
1364 char sdp[16384];
1365 int i;
1366 AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1367
1368 if (!avc)
1369 exit_program(1);
1370 for (i = 0; i < nb_output_files; i++)
1371 avc[i] = output_files[i]->ctx;
1372
1373 av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1374 printf("SDP:\n%s\n", sdp);
1375 fflush(stdout);
1376 av_freep(&avc);
1377 }
1378
1379 static const HWAccel *get_hwaccel(enum AVPixelFormat pix_fmt)
1380 {
1381 int i;
1382 for (i = 0; hwaccels[i].name; i++)
1383 if (hwaccels[i].pix_fmt == pix_fmt)
1384 return &hwaccels[i];
1385 return NULL;
1386 }
1387
1388 static enum AVPixelFormat get_format(AVCodecContext *s, const enum AVPixelFormat *pix_fmts)
1389 {
1390 InputStream *ist = s->opaque;
1391 const enum AVPixelFormat *p;
1392 int ret;
1393
1394 for (p = pix_fmts; *p != -1; p++) {
1395 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(*p);
1396 const HWAccel *hwaccel;
1397
1398 if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
1399 break;
1400
1401 hwaccel = get_hwaccel(*p);
1402 if (!hwaccel ||
1403 (ist->active_hwaccel_id && ist->active_hwaccel_id != hwaccel->id) ||
1404 (ist->hwaccel_id != HWACCEL_AUTO && ist->hwaccel_id != hwaccel->id))
1405 continue;
1406
1407 ret = hwaccel->init(s);
1408 if (ret < 0) {
1409 if (ist->hwaccel_id == hwaccel->id) {
1410 av_log(NULL, AV_LOG_FATAL,
1411 "%s hwaccel requested for input stream #%d:%d, "
1412 "but cannot be initialized.\n", hwaccel->name,
1413 ist->file_index, ist->st->index);
1414 exit_program(1);
1415 }
1416 continue;
1417 }
1418 ist->active_hwaccel_id = hwaccel->id;
1419 ist->hwaccel_pix_fmt = *p;
1420 break;
1421 }
1422
1423 return *p;
1424 }
1425
1426 static int get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
1427 {
1428 InputStream *ist = s->opaque;
1429
1430 if (ist->hwaccel_get_buffer && frame->format == ist->hwaccel_pix_fmt)
1431 return ist->hwaccel_get_buffer(s, frame, flags);
1432
1433 return avcodec_default_get_buffer2(s, frame, flags);
1434 }
1435
1436 static int init_input_stream(int ist_index, char *error, int error_len)
1437 {
1438 int i, ret;
1439 InputStream *ist = input_streams[ist_index];
1440 if (ist->decoding_needed) {
1441 AVCodec *codec = ist->dec;
1442 if (!codec) {
1443 snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d:%d",
1444 ist->st->codec->codec_id, ist->file_index, ist->st->index);
1445 return AVERROR(EINVAL);
1446 }
1447
1448 /* update requested sample format for the decoder based on the
1449 corresponding encoder sample format */
1450 for (i = 0; i < nb_output_streams; i++) {
1451 OutputStream *ost = output_streams[i];
1452 if (ost->source_index == ist_index) {
1453 update_sample_fmt(ist->st->codec, codec, ost->st->codec);
1454 break;
1455 }
1456 }
1457
1458 ist->st->codec->opaque = ist;
1459 ist->st->codec->get_format = get_format;
1460 ist->st->codec->get_buffer2 = get_buffer;
1461 ist->st->codec->thread_safe_callbacks = 1;
1462
1463 av_opt_set_int(ist->st->codec, "refcounted_frames", 1, 0);
1464
1465 if (!av_dict_get(ist->opts, "threads", NULL, 0))
1466 av_dict_set(&ist->opts, "threads", "auto", 0);
1467 if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
1468 char errbuf[128];
1469 if (ret == AVERROR_EXPERIMENTAL)
1470 abort_codec_experimental(codec, 0);
1471
1472 av_strerror(ret, errbuf, sizeof(errbuf));
1473
1474 snprintf(error, error_len,
1475 "Error while opening decoder for input stream "
1476 "#%d:%d : %s",
1477 ist->file_index, ist->st->index, errbuf);
1478 return ret;
1479 }
1480 assert_avoptions(ist->opts);
1481 }
1482
1483 ist->last_dts = ist->st->avg_frame_rate.num ? - ist->st->codec->has_b_frames * AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
1484 ist->next_dts = AV_NOPTS_VALUE;
1485 init_pts_correction(&ist->pts_ctx);
1486
1487 return 0;
1488 }
1489
1490 static InputStream *get_input_stream(OutputStream *ost)
1491 {
1492 if (ost->source_index >= 0)
1493 return input_streams[ost->source_index];
1494
1495 if (ost->filter) {
1496 FilterGraph *fg = ost->filter->graph;
1497 int i;
1498
1499 for (i = 0; i < fg->nb_inputs; i++)
1500 if (fg->inputs[i]->ist->st->codec->codec_type == ost->st->codec->codec_type)
1501 return fg->inputs[i]->ist;
1502 }
1503
1504 return NULL;
1505 }
1506
1507 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1508 AVCodecContext *avctx)
1509 {
1510 char *p;
1511 int n = 1, i;
1512 int64_t t;
1513
1514 for (p = kf; *p; p++)
1515 if (*p == ',')
1516 n++;
1517 ost->forced_kf_count = n;
1518 ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1519 if (!ost->forced_kf_pts) {
1520 av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1521 exit_program(1);
1522 }
1523
1524 p = kf;
1525 for (i = 0; i < n; i++) {
1526 char *next = strchr(p, ',');
1527
1528 if (next)
1529 *next++ = 0;
1530
1531 t = parse_time_or_die("force_key_frames", p, 1);
1532 ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1533
1534 p = next;
1535 }
1536 }
1537
1538 static int transcode_init(void)
1539 {
1540 int ret = 0, i, j, k;
1541 AVFormatContext *oc;
1542 AVCodecContext *codec;
1543 OutputStream *ost;
1544 InputStream *ist;
1545 char error[1024];
1546 int want_sdp = 1;
1547
1548 /* init framerate emulation */
1549 for (i = 0; i < nb_input_files; i++) {
1550 InputFile *ifile = input_files[i];
1551 if (ifile->rate_emu)
1552 for (j = 0; j < ifile->nb_streams; j++)
1553 input_streams[j + ifile->ist_index]->start = av_gettime();
1554 }
1555
1556 /* output stream init */
1557 for (i = 0; i < nb_output_files; i++) {
1558 oc = output_files[i]->ctx;
1559 if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
1560 av_dump_format(oc, i, oc->filename, 1);
1561 av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
1562 return AVERROR(EINVAL);
1563 }
1564 }
1565
1566 /* init complex filtergraphs */
1567 for (i = 0; i < nb_filtergraphs; i++)
1568 if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
1569 return ret;
1570
1571 /* for each output stream, we compute the right encoding parameters */
1572 for (i = 0; i < nb_output_streams; i++) {
1573 AVCodecContext *icodec = NULL;
1574 ost = output_streams[i];
1575 oc = output_files[ost->file_index]->ctx;
1576 ist = get_input_stream(ost);
1577
1578 if (ost->attachment_filename)
1579 continue;
1580
1581 codec = ost->st->codec;
1582
1583 if (ist) {
1584 icodec = ist->st->codec;
1585
1586 ost->st->disposition = ist->st->disposition;
1587 codec->bits_per_raw_sample = icodec->bits_per_raw_sample;
1588 codec->chroma_sample_location = icodec->chroma_sample_location;
1589 }
1590
1591 if (ost->stream_copy) {
1592 AVRational sar;
1593 uint64_t extra_size;
1594
1595 av_assert0(ist && !ost->filter);
1596
1597 extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
1598
1599 if (extra_size > INT_MAX) {
1600 return AVERROR(EINVAL);
1601 }
1602
1603 /* if stream_copy is selected, no need to decode or encode */
1604 codec->codec_id = icodec->codec_id;
1605 codec->codec_type = icodec->codec_type;
1606
1607 if (!codec->codec_tag) {
1608 if (!oc->oformat->codec_tag ||
1609 av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
1610 av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
1611 codec->codec_tag = icodec->codec_tag;
1612 }
1613
1614 codec->bit_rate = icodec->bit_rate;
1615 codec->rc_max_rate = icodec->rc_max_rate;
1616 codec->rc_buffer_size = icodec->rc_buffer_size;
1617 codec->field_order = icodec->field_order;
1618 codec->extradata = av_mallocz(extra_size);
1619 if (!codec->extradata) {
1620 return AVERROR(ENOMEM);
1621 }
1622 memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
1623 codec->extradata_size = icodec->extradata_size;
1624 if (!copy_tb) {
1625 codec->time_base = icodec->time_base;
1626 codec->time_base.num *= icodec->ticks_per_frame;
1627 av_reduce(&codec->time_base.num, &codec->time_base.den,
1628 codec->time_base.num, codec->time_base.den, INT_MAX);
1629 } else
1630 codec->time_base = ist->st->time_base;
1631
1632 ost->parser = av_parser_init(codec->codec_id);
1633
1634 switch (codec->codec_type) {
1635 case AVMEDIA_TYPE_AUDIO:
1636 if (audio_volume != 256) {
1637 av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
1638 exit_program(1);
1639 }
1640 codec->channel_layout = icodec->channel_layout;
1641 codec->sample_rate = icodec->sample_rate;
1642 codec->channels = icodec->channels;
1643 codec->frame_size = icodec->frame_size;
1644 codec->audio_service_type = icodec->audio_service_type;
1645 codec->block_align = icodec->block_align;
1646 break;
1647 case AVMEDIA_TYPE_VIDEO:
1648 codec->pix_fmt = icodec->pix_fmt;
1649 codec->width = icodec->width;
1650 codec->height = icodec->height;
1651 codec->has_b_frames = icodec->has_b_frames;
1652 if (ost->frame_aspect_ratio)
1653 sar = av_d2q(ost->frame_aspect_ratio * codec->height / codec->width, 255);
1654 else if (ist->st->sample_aspect_ratio.num)
1655 sar = ist->st->sample_aspect_ratio;
1656 else
1657 sar = icodec->sample_aspect_ratio;
1658 ost->st->sample_aspect_ratio = codec->sample_aspect_ratio = sar;
1659 break;
1660 case AVMEDIA_TYPE_SUBTITLE:
1661 codec->width = icodec->width;
1662 codec->height = icodec->height;
1663 break;
1664 case AVMEDIA_TYPE_DATA:
1665 case AVMEDIA_TYPE_ATTACHMENT:
1666 break;
1667 default:
1668 abort();
1669 }
1670 } else {
1671 if (!ost->enc) {
1672 /* should only happen when a default codec is not present. */
1673 snprintf(error, sizeof(error), "Automatic encoder selection "
1674 "failed for output stream #%d:%d. Default encoder for "
1675 "format %s is probably disabled. Please choose an "
1676 "encoder manually.\n", ost->file_index, ost->index,
1677 oc->oformat->name);
1678 ret = AVERROR(EINVAL);
1679 goto dump_format;
1680 }
1681
1682 if (ist)
1683 ist->decoding_needed = 1;
1684 ost->encoding_needed = 1;
1685
1686 /*
1687 * We want CFR output if and only if one of those is true:
1688 * 1) user specified output framerate with -r
1689 * 2) user specified -vsync cfr
1690 * 3) output format is CFR and the user didn't force vsync to
1691 * something else than CFR
1692 *
1693 * in such a case, set ost->frame_rate
1694 */
1695 if (codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1696 !ost->frame_rate.num && ist &&
1697 (video_sync_method == VSYNC_CFR ||
1698 (video_sync_method == VSYNC_AUTO &&
1699 !(oc->oformat->flags & (AVFMT_NOTIMESTAMPS | AVFMT_VARIABLE_FPS))))) {
1700 if (ist->framerate.num)
1701 ost->frame_rate = ist->framerate;
1702 else if (ist->st->avg_frame_rate.num)
1703 ost->frame_rate = ist->st->avg_frame_rate;
1704 else {
1705 av_log(NULL, AV_LOG_WARNING, "Constant framerate requested "
1706 "for the output stream #%d:%d, but no information "
1707 "about the input framerate is available. Falling "
1708 "back to a default value of 25fps. Use the -r option "
1709 "if you want a different framerate.\n",
1710 ost->file_index, ost->index);
1711 ost->frame_rate = (AVRational){ 25, 1 };
1712 }
1713
1714 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
1715 int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
1716 ost->frame_rate = ost->enc->supported_framerates[idx];
1717 }
1718 }
1719
1720 if (!ost->filter &&
1721 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
1722 codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
1723 FilterGraph *fg;
1724 fg = init_simple_filtergraph(ist, ost);
1725 if (configure_filtergraph(fg)) {
1726 av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
1727 exit_program(1);
1728 }
1729 }
1730
1731 switch (codec->codec_type) {
1732 case AVMEDIA_TYPE_AUDIO:
1733 codec->sample_fmt = ost->filter->filter->inputs[0]->format;
1734 codec->sample_rate = ost->filter->filter->inputs[0]->sample_rate;
1735 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
1736 codec->channels = av_get_channel_layout_nb_channels(codec->channel_layout);
1737 codec->time_base = (AVRational){ 1, codec->sample_rate };
1738 break;
1739 case AVMEDIA_TYPE_VIDEO:
1740 codec->time_base = ost->filter->filter->inputs[0]->time_base;
1741
1742 codec->width = ost->filter->filter->inputs[0]->w;
1743 codec->height = ost->filter->filter->inputs[0]->h;
1744 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
1745 ost->frame_aspect_ratio ? // overridden by the -aspect cli option
1746 av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
1747 ost->filter->filter->inputs[0]->sample_aspect_ratio;
1748 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
1749
1750 if (icodec &&
1751 (codec->width != icodec->width ||
1752 codec->height != icodec->height ||
1753 codec->pix_fmt != icodec->pix_fmt)) {
1754 codec->bits_per_raw_sample = 0;
1755 }
1756
1757 if (ost->forced_keyframes)
1758 parse_forced_key_frames(ost->forced_keyframes, ost,
1759 ost->st->codec);
1760 break;
1761 case AVMEDIA_TYPE_SUBTITLE:
1762 codec->time_base = (AVRational){1, 1000};
1763 break;
1764 default:
1765 abort();
1766 break;
1767 }
1768 /* two pass mode */
1769 if ((codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
1770 char logfilename[1024];
1771 FILE *f;
1772
1773 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
1774 ost->logfile_prefix ? ost->logfile_prefix :
1775 DEFAULT_PASS_LOGFILENAME_PREFIX,
1776 i);
1777 if (!strcmp(ost->enc->name, "libx264")) {
1778 av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
1779 } else {
1780 if (codec->flags & CODEC_FLAG_PASS1) {
1781 f = fopen(logfilename, "wb");
1782 if (!f) {
1783 av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
1784 logfilename, strerror(errno));
1785 exit_program(1);
1786 }
1787 ost->logfile = f;
1788 } else {
1789 char *logbuffer;
1790 size_t logbuffer_size;
1791 if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
1792 av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
1793 logfilename);
1794 exit_program(1);
1795 }
1796 codec->stats_in = logbuffer;
1797 }
1798 }
1799 }
1800 }
1801 }
1802
1803 /* open each encoder */
1804 for (i = 0; i < nb_output_streams; i++) {
1805 ost = output_streams[i];
1806 if (ost->encoding_needed) {
1807 AVCodec *codec = ost->enc;
1808 AVCodecContext *dec = NULL;
1809
1810 if ((ist = get_input_stream(ost)))
1811 dec = ist->st->codec;
1812 if (dec && dec->subtitle_header) {
1813 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
1814 if (!ost->st->codec->subtitle_header) {
1815 ret = AVERROR(ENOMEM);
1816 goto dump_format;
1817 }
1818 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
1819 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
1820 }
1821 if (!av_dict_get(ost->opts, "threads", NULL, 0))
1822 av_dict_set(&ost->opts, "threads", "auto", 0);
1823 if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
1824 if (ret == AVERROR_EXPERIMENTAL)
1825 abort_codec_experimental(codec, 1);
1826 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
1827 ost->file_index, ost->index);
1828 goto dump_format;
1829 }
1830 assert_avoptions(ost->opts);
1831 if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
1832 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
1833 "It takes bits/s as argument, not kbits/s\n");
1834 extra_size += ost->st->codec->extradata_size;
1835 } else {
1836 av_opt_set_dict(ost->st->codec, &ost->opts);
1837 }
1838 }
1839
1840 /* init input streams */
1841 for (i = 0; i < nb_input_streams; i++)
1842 if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
1843 goto dump_format;
1844
1845 /* discard unused programs */
1846 for (i = 0; i < nb_input_files; i++) {
1847 InputFile *ifile = input_files[i];
1848 for (j = 0; j < ifile->ctx->nb_programs; j++) {
1849 AVProgram *p = ifile->ctx->programs[j];
1850 int discard = AVDISCARD_ALL;
1851
1852 for (k = 0; k < p->nb_stream_indexes; k++)
1853 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
1854 discard = AVDISCARD_DEFAULT;
1855 break;
1856 }
1857 p->discard = discard;
1858 }
1859 }
1860
1861 /* open files and write file headers */
1862 for (i = 0; i < nb_output_files; i++) {
1863 oc = output_files[i]->ctx;
1864 oc->interrupt_callback = int_cb;
1865 if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
1866 char errbuf[128];
1867 av_strerror(ret, errbuf, sizeof(errbuf));
1868 snprintf(error, sizeof(error),
1869 "Could not write header for output file #%d "
1870 "(incorrect codec parameters ?): %s",
1871 i, errbuf);
1872 ret = AVERROR(EINVAL);
1873 goto dump_format;
1874 }
1875 assert_avoptions(output_files[i]->opts);
1876 if (strcmp(oc->oformat->name, "rtp")) {
1877 want_sdp = 0;
1878 }
1879 }
1880
1881 dump_format:
1882 /* dump the file output parameters - cannot be done before in case
1883 of stream copy */
1884 for (i = 0; i < nb_output_files; i++) {
1885 av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
1886 }
1887
1888 /* dump the stream mapping */
1889 av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
1890 for (i = 0; i < nb_input_streams; i++) {
1891 ist = input_streams[i];
1892
1893 for (j = 0; j < ist->nb_filters; j++) {
1894 if (ist->filters[j]->graph->graph_desc) {
1895 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d (%s) -> %s",
1896 ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
1897 ist->filters[j]->name);
1898 if (nb_filtergraphs > 1)
1899 av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
1900 av_log(NULL, AV_LOG_INFO, "\n");
1901 }
1902 }
1903 }
1904
1905 for (i = 0; i < nb_output_streams; i++) {
1906 ost = output_streams[i];
1907
1908 if (ost->attachment_filename) {
1909 /* an attached file */
1910 av_log(NULL, AV_LOG_INFO, " File %s -> Stream #%d:%d\n",
1911 ost->attachment_filename, ost->file_index, ost->index);
1912 continue;
1913 }
1914
1915 if (ost->filter && ost->filter->graph->graph_desc) {
1916 /* output from a complex graph */
1917 av_log(NULL, AV_LOG_INFO, " %s", ost->filter->name);
1918 if (nb_filtergraphs > 1)
1919 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
1920
1921 av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
1922 ost->index, ost->enc ? ost->enc->name : "?");
1923 continue;
1924 }
1925
1926 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d -> #%d:%d",
1927 input_streams[ost->source_index]->file_index,
1928 input_streams[ost->source_index]->st->index,
1929 ost->file_index,
1930 ost->index);
1931 if (ost->sync_ist != input_streams[ost->source_index])
1932 av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
1933 ost->sync_ist->file_index,
1934 ost->sync_ist->st->index);
1935 if (ost->stream_copy)
1936 av_log(NULL, AV_LOG_INFO, " (copy)");
1937 else
1938 av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
1939 input_streams[ost->source_index]->dec->name : "?",
1940 ost->enc ? ost->enc->name : "?");
1941 av_log(NULL, AV_LOG_INFO, "\n");
1942 }
1943
1944 if (ret) {
1945 av_log(NULL, AV_LOG_ERROR, "%s\n", error);
1946 return ret;
1947 }
1948
1949 if (want_sdp) {
1950 print_sdp();
1951 }
1952
1953 return 0;
1954 }
1955
1956 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
1957 static int need_output(void)
1958 {
1959 int i;
1960
1961 for (i = 0; i < nb_output_streams; i++) {
1962 OutputStream *ost = output_streams[i];
1963 OutputFile *of = output_files[ost->file_index];
1964 AVFormatContext *os = output_files[ost->file_index]->ctx;
1965
1966 if (ost->finished ||
1967 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
1968 continue;
1969 if (ost->frame_number >= ost->max_frames) {
1970 int j;
1971 for (j = 0; j < of->ctx->nb_streams; j++)
1972 output_streams[of->ost_index + j]->finished = 1;
1973 continue;
1974 }
1975
1976 return 1;
1977 }
1978
1979 return 0;
1980 }
1981
1982 static InputFile *select_input_file(void)
1983 {
1984 InputFile *ifile = NULL;
1985 int64_t ipts_min = INT64_MAX;
1986 int i;
1987
1988 for (i = 0; i < nb_input_streams; i++) {
1989 InputStream *ist = input_streams[i];
1990 int64_t ipts = ist->last_dts;
1991
1992 if (ist->discard || input_files[ist->file_index]->eagain)
1993 continue;
1994 if (!input_files[ist->file_index]->eof_reached) {
1995 if (ipts < ipts_min) {
1996 ipts_min = ipts;
1997 ifile = input_files[ist->file_index];
1998 }
1999 }
2000 }
2001
2002 return ifile;
2003 }
2004
2005 #if HAVE_PTHREADS
2006 static void *input_thread(void *arg)
2007 {
2008 InputFile *f = arg;
2009 int ret = 0;
2010
2011 while (!transcoding_finished && ret >= 0) {
2012 AVPacket pkt;
2013 ret = av_read_frame(f->ctx, &pkt);
2014
2015 if (ret == AVERROR(EAGAIN)) {
2016 av_usleep(10000);
2017 ret = 0;
2018 continue;
2019 } else if (ret < 0)
2020 break;
2021
2022 pthread_mutex_lock(&f->fifo_lock);
2023 while (!av_fifo_space(f->fifo))
2024 pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2025
2026 av_dup_packet(&pkt);
2027 av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2028
2029 pthread_mutex_unlock(&f->fifo_lock);
2030 }
2031
2032 f->finished = 1;
2033 return NULL;
2034 }
2035
2036 static void free_input_threads(void)
2037 {
2038 int i;
2039
2040 if (nb_input_files == 1)
2041 return;
2042
2043 transcoding_finished = 1;
2044
2045 for (i = 0; i < nb_input_files; i++) {
2046 InputFile *f = input_files[i];
2047 AVPacket pkt;
2048
2049 if (!f->fifo || f->joined)
2050 continue;
2051
2052 pthread_mutex_lock(&f->fifo_lock);
2053 while (av_fifo_size(f->fifo)) {
2054 av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2055 av_free_packet(&pkt);
2056 }
2057 pthread_cond_signal(&f->fifo_cond);
2058 pthread_mutex_unlock(&f->fifo_lock);
2059
2060 pthread_join(f->thread, NULL);
2061 f->joined = 1;
2062
2063 while (av_fifo_size(f->fifo)) {
2064 av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2065 av_free_packet(&pkt);
2066 }
2067 av_fifo_free(f->fifo);
2068 }
2069 }
2070
2071 static int init_input_threads(void)
2072 {
2073 int i, ret;
2074
2075 if (nb_input_files == 1)
2076 return 0;
2077
2078 for (i = 0; i < nb_input_files; i++) {
2079 InputFile *f = input_files[i];
2080
2081 if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2082 return AVERROR(ENOMEM);
2083
2084 pthread_mutex_init(&f->fifo_lock, NULL);
2085 pthread_cond_init (&f->fifo_cond, NULL);
2086
2087 if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2088 return AVERROR(ret);
2089 }
2090 return 0;
2091 }
2092
2093 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2094 {
2095 int ret = 0;
2096
2097 pthread_mutex_lock(&f->fifo_lock);
2098
2099 if (av_fifo_size(f->fifo)) {
2100 av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2101 pthread_cond_signal(&f->fifo_cond);
2102 } else {
2103 if (f->finished)
2104 ret = AVERROR_EOF;
2105 else
2106 ret = AVERROR(EAGAIN);
2107 }
2108
2109 pthread_mutex_unlock(&f->fifo_lock);
2110
2111 return ret;
2112 }
2113 #endif
2114
2115 static int get_input_packet(InputFile *f, AVPacket *pkt)
2116 {
2117 if (f->rate_emu) {
2118 int i;
2119 for (i = 0; i < f->nb_streams; i++) {
2120 InputStream *ist = input_streams[f->ist_index + i];
2121 int64_t pts = av_rescale(ist->last_dts, 1000000, AV_TIME_BASE);
2122 int64_t now = av_gettime() - ist->start;
2123 if (pts > now)
2124 return AVERROR(EAGAIN);
2125 }
2126 }
2127
2128 #if HAVE_PTHREADS
2129 if (nb_input_files > 1)
2130 return get_input_packet_mt(f, pkt);
2131 #endif
2132 return av_read_frame(f->ctx, pkt);
2133 }
2134
2135 static int got_eagain(void)
2136 {
2137 int i;
2138 for (i = 0; i < nb_input_files; i++)
2139 if (input_files[i]->eagain)
2140 return 1;
2141 return 0;
2142 }
2143
2144 static void reset_eagain(void)
2145 {
2146 int i;
2147 for (i = 0; i < nb_input_files; i++)
2148 input_files[i]->eagain = 0;
2149 }
2150
2151 /*
2152 * Read one packet from an input file and send it for
2153 * - decoding -> lavfi (audio/video)
2154 * - decoding -> encoding -> muxing (subtitles)
2155 * - muxing (streamcopy)
2156 *
2157 * Return
2158 * - 0 -- one packet was read and processed
2159 * - AVERROR(EAGAIN) -- no packets were available for selected file,
2160 * this function should be called again
2161 * - AVERROR_EOF -- this function should not be called again
2162 */
2163 static int process_input(void)
2164 {
2165 InputFile *ifile;
2166 AVFormatContext *is;
2167 InputStream *ist;
2168 AVPacket pkt;
2169 int ret, i, j;
2170
2171 /* select the stream that we must read now */
2172 ifile = select_input_file();
2173 /* if none, if is finished */
2174 if (!ifile) {
2175 if (got_eagain()) {
2176 reset_eagain();
2177 av_usleep(10000);
2178 return AVERROR(EAGAIN);
2179 }
2180 av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from.\n");
2181 return AVERROR_EOF;
2182 }
2183
2184 is = ifile->ctx;
2185 ret = get_input_packet(ifile, &pkt);
2186
2187 if (ret == AVERROR(EAGAIN)) {
2188 ifile->eagain = 1;
2189 return ret;
2190 }
2191 if (ret < 0) {
2192 if (ret != AVERROR_EOF) {
2193 print_error(is->filename, ret);
2194 if (exit_on_error)
2195 exit_program(1);
2196 }
2197 ifile->eof_reached = 1;
2198
2199 for (i = 0; i < ifile->nb_streams; i++) {
2200 ist = input_streams[ifile->ist_index + i];
2201 if (ist->decoding_needed)
2202 output_packet(ist, NULL);
2203
2204 /* mark all outputs that don't go through lavfi as finished */
2205 for (j = 0; j < nb_output_streams; j++) {
2206 OutputStream *ost = output_streams[j];
2207
2208 if (ost->source_index == ifile->ist_index + i &&
2209 (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2210 ost->finished= 1;
2211 }
2212 }
2213
2214 return AVERROR(EAGAIN);
2215 }
2216
2217 reset_eagain();
2218
2219 if (do_pkt_dump) {
2220 av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2221 is->streams[pkt.stream_index]);
2222 }
2223 /* the following test is needed in case new streams appear
2224 dynamically in stream : we ignore them */
2225 if (pkt.stream_index >= ifile->nb_streams)
2226 goto discard_packet;
2227
2228 ist = input_streams[ifile->ist_index + pkt.stream_index];
2229 ist->nb_packets++;
2230 if (ist->discard)
2231 goto discard_packet;
2232
2233 /* add the stream-global side data to the first packet */
2234 if (ist->nb_packets == 1)
2235 for (i = 0; i < ist->st->nb_side_data; i++) {
2236 AVPacketSideData *src_sd = &ist->st->side_data[i];
2237 uint8_t *dst_data;
2238
2239 if (av_packet_get_side_data(&pkt, src_sd->type, NULL))
2240 continue;
2241
2242 dst_data = av_packet_new_side_data(&pkt, src_sd->type, src_sd->size);
2243 if (!dst_data)
2244 exit_program(1);
2245
2246 memcpy(dst_data, src_sd->data, src_sd->size);
2247 }
2248
2249 if (pkt.dts != AV_NOPTS_VALUE)
2250 pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2251 if (pkt.pts != AV_NOPTS_VALUE)
2252 pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2253
2254 if (pkt.pts != AV_NOPTS_VALUE)
2255 pkt.pts *= ist->ts_scale;
2256 if (pkt.dts != AV_NOPTS_VALUE)
2257 pkt.dts *= ist->ts_scale;
2258
2259 if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2260 (is->iformat->flags & AVFMT_TS_DISCONT)) {
2261 int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2262 int64_t delta = pkt_dts - ist->next_dts;
2263
2264 if ((FFABS(delta) > 1LL * dts_delta_threshold * AV_TIME_BASE || pkt_dts + 1 < ist->last_dts) && !copy_ts) {
2265 ifile->ts_offset -= delta;
2266 av_log(NULL, AV_LOG_DEBUG,
2267 "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2268 delta, ifile->ts_offset);
2269 pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2270 if (pkt.pts != AV_NOPTS_VALUE)
2271 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2272 }
2273 }
2274
2275 ret = output_packet(ist, &pkt);
2276 if (ret < 0) {
2277 av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
2278 ist->file_index, ist->st->index);
2279 if (exit_on_error)
2280 exit_program(1);
2281 }
2282
2283 discard_packet:
2284 av_free_packet(&pkt);
2285
2286 return 0;
2287 }
2288
2289 /*
2290 * The following code is the main loop of the file converter
2291 */
2292 static int transcode(void)
2293 {
2294 int ret, i, need_input = 1;
2295 AVFormatContext *os;
2296 OutputStream *ost;
2297 InputStream *ist;
2298 int64_t timer_start;
2299
2300 ret = transcode_init();
2301 if (ret < 0)
2302 goto fail;
2303
2304 av_log(NULL, AV_LOG_INFO, "Press ctrl-c to stop encoding\n");
2305 term_init();
2306
2307 timer_start = av_gettime();
2308
2309 #if HAVE_PTHREADS
2310 if ((ret = init_input_threads()) < 0)
2311 goto fail;
2312 #endif
2313
2314 while (!received_sigterm) {
2315 /* check if there's any stream where output is still needed */
2316 if (!need_output()) {
2317 av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
2318 break;
2319 }
2320
2321 /* read and process one input packet if needed */
2322 if (need_input) {
2323 ret = process_input();
2324 if (ret == AVERROR_EOF)
2325 need_input = 0;
2326 }
2327
2328 ret = poll_filters();
2329 if (ret < 0) {
2330 if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
2331 continue;
2332
2333 av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
2334 break;
2335 }
2336
2337 /* dump report by using the output first video and audio streams */
2338 print_report(0, timer_start);
2339 }
2340 #if HAVE_PTHREADS
2341 free_input_threads();
2342 #endif
2343
2344 /* at the end of stream, we must flush the decoder buffers */
2345 for (i = 0; i < nb_input_streams; i++) {
2346 ist = input_streams[i];
2347 if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
2348 output_packet(ist, NULL);
2349 }
2350 }
2351 poll_filters();
2352 flush_encoders();
2353
2354 term_exit();
2355
2356 /* write the trailer if needed and close file */
2357 for (i = 0; i < nb_output_files; i++) {
2358 os = output_files[i]->ctx;
2359 av_write_trailer(os);
2360 }
2361
2362 /* dump report by using the first video and audio streams */
2363 print_report(1, timer_start);
2364
2365 /* close each encoder */
2366 for (i = 0; i < nb_output_streams; i++) {
2367 ost = output_streams[i];
2368 if (ost->encoding_needed) {
2369 av_freep(&ost->st->codec->stats_in);
2370 avcodec_close(ost->st->codec);
2371 }
2372 }
2373
2374 /* close each decoder */
2375 for (i = 0; i < nb_input_streams; i++) {
2376 ist = input_streams[i];
2377 if (ist->decoding_needed) {
2378 avcodec_close(ist->st->codec);
2379 if (ist->hwaccel_uninit)
2380 ist->hwaccel_uninit(ist->st->codec);
2381 }
2382 }
2383
2384 /* finished ! */
2385 ret = 0;
2386
2387 fail:
2388 #if HAVE_PTHREADS
2389 free_input_threads();
2390 #endif
2391
2392 if (output_streams) {
2393 for (i = 0; i < nb_output_streams; i++) {
2394 ost = output_streams[i];
2395 if (ost) {
2396 if (ost->stream_copy)
2397 av_freep(&ost->st->codec->extradata);
2398 if (ost->logfile) {
2399 fclose(ost->logfile);
2400 ost->logfile = NULL;
2401 }
2402 av_freep(&ost->st->codec->subtitle_header);
2403 av_free(ost->forced_kf_pts);
2404 av_dict_free(&ost->opts);
2405 av_dict_free(&ost->resample_opts);
2406 }
2407 }
2408 }
2409 return ret;
2410 }
2411
2412 static int64_t getutime(void)
2413 {
2414 #if HAVE_GETRUSAGE
2415 struct rusage rusage;
2416
2417 getrusage(RUSAGE_SELF, &rusage);
2418 return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
2419 #elif HAVE_GETPROCESSTIMES
2420 HANDLE proc;
2421 FILETIME c, e, k, u;
2422 proc = GetCurrentProcess();
2423 GetProcessTimes(proc, &c, &e, &k, &u);
2424 return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
2425 #else
2426 return av_gettime();
2427 #endif
2428 }
2429
2430 static int64_t getmaxrss(void)
2431 {
2432 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
2433 struct rusage rusage;
2434 getrusage(RUSAGE_SELF, &rusage);
2435 return (int64_t)rusage.ru_maxrss * 1024;
2436 #elif HAVE_GETPROCESSMEMORYINFO
2437 HANDLE proc;
2438 PROCESS_MEMORY_COUNTERS memcounters;
2439 proc = GetCurrentProcess();
2440 memcounters.cb = sizeof(memcounters);
2441 GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
2442 return memcounters.PeakPagefileUsage;
2443 #else
2444 return 0;
2445 #endif
2446 }
2447
2448 int main(int argc, char **argv)
2449 {
2450 int ret;
2451 int64_t ti;
2452
2453 register_exit(avconv_cleanup);
2454
2455 av_log_set_flags(AV_LOG_SKIP_REPEATED);
2456 parse_loglevel(argc, argv, options);
2457
2458 avcodec_register_all();
2459 #if CONFIG_AVDEVICE
2460 avdevice_register_all();
2461 #endif
2462 avfilter_register_all();
2463 av_register_all();
2464 avformat_network_init();
2465
2466 show_banner();
2467
2468 /* parse options and open all input/output files */
2469 ret = avconv_parse_options(argc, argv);
2470 if (ret < 0)
2471 exit_program(1);
2472
2473 if (nb_output_files <= 0 && nb_input_files == 0) {
2474 show_usage();
2475 av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
2476 exit_program(1);
2477 }
2478
2479 /* file converter / grab */
2480 if (nb_output_files <= 0) {
2481 fprintf(stderr, "At least one output file must be specified\n");
2482 exit_program(1);
2483 }
2484
2485 ti = getutime();
2486 if (transcode() < 0)
2487 exit_program(1);
2488 ti = getutime() - ti;
2489 if (do_benchmark) {
2490 int maxrss = getmaxrss() / 1024;
2491 printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss);
2492 }
2493
2494 exit_program(0);
2495 return 0;
2496 }