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