d393ce1b352518ba43ac9cb7127d4660a5225d2d
[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 int nb_frames_drop = 0;
88
89
90
91 #if HAVE_PTHREADS
92 /* signal to input threads that they should exit; set by the main thread */
93 static int transcoding_finished;
94 #endif
95
96 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
97
98 InputStream **input_streams = NULL;
99 int nb_input_streams = 0;
100 InputFile **input_files = NULL;
101 int nb_input_files = 0;
102
103 OutputStream **output_streams = NULL;
104 int nb_output_streams = 0;
105 OutputFile **output_files = NULL;
106 int nb_output_files = 0;
107
108 FilterGraph **filtergraphs;
109 int nb_filtergraphs;
110
111 static void term_exit(void)
112 {
113 av_log(NULL, AV_LOG_QUIET, "");
114 }
115
116 static volatile int received_sigterm = 0;
117 static volatile int received_nb_signals = 0;
118
119 static void
120 sigterm_handler(int sig)
121 {
122 received_sigterm = sig;
123 received_nb_signals++;
124 term_exit();
125 }
126
127 static void term_init(void)
128 {
129 signal(SIGINT , sigterm_handler); /* Interrupt (ANSI). */
130 signal(SIGTERM, sigterm_handler); /* Termination (ANSI). */
131 #ifdef SIGXCPU
132 signal(SIGXCPU, sigterm_handler);
133 #endif
134 }
135
136 static int decode_interrupt_cb(void *ctx)
137 {
138 return received_nb_signals > 1;
139 }
140
141 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
142
143 static void avconv_cleanup(int ret)
144 {
145 int i, j;
146
147 for (i = 0; i < nb_filtergraphs; i++) {
148 avfilter_graph_free(&filtergraphs[i]->graph);
149 for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
150 av_freep(&filtergraphs[i]->inputs[j]->name);
151 av_freep(&filtergraphs[i]->inputs[j]);
152 }
153 av_freep(&filtergraphs[i]->inputs);
154 for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
155 av_freep(&filtergraphs[i]->outputs[j]->name);
156 av_freep(&filtergraphs[i]->outputs[j]);
157 }
158 av_freep(&filtergraphs[i]->outputs);
159 av_freep(&filtergraphs[i]->graph_desc);
160 av_freep(&filtergraphs[i]);
161 }
162 av_freep(&filtergraphs);
163
164 /* close files */
165 for (i = 0; i < nb_output_files; i++) {
166 AVFormatContext *s = output_files[i]->ctx;
167 if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE) && s->pb)
168 avio_close(s->pb);
169 avformat_free_context(s);
170 av_dict_free(&output_files[i]->opts);
171 av_freep(&output_files[i]);
172 }
173 for (i = 0; i < nb_output_streams; i++) {
174 AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
175 while (bsfc) {
176 AVBitStreamFilterContext *next = bsfc->next;
177 av_bitstream_filter_close(bsfc);
178 bsfc = next;
179 }
180 output_streams[i]->bitstream_filters = NULL;
181 av_frame_free(&output_streams[i]->filtered_frame);
182
183 av_parser_close(output_streams[i]->parser);
184
185 av_freep(&output_streams[i]->forced_keyframes);
186 av_freep(&output_streams[i]->avfilter);
187 av_freep(&output_streams[i]->logfile_prefix);
188 av_freep(&output_streams[i]);
189 }
190 for (i = 0; i < nb_input_files; i++) {
191 avformat_close_input(&input_files[i]->ctx);
192 av_freep(&input_files[i]);
193 }
194 for (i = 0; i < nb_input_streams; i++) {
195 av_frame_free(&input_streams[i]->decoded_frame);
196 av_frame_free(&input_streams[i]->filter_frame);
197 av_dict_free(&input_streams[i]->opts);
198 av_freep(&input_streams[i]->filters);
199 av_freep(&input_streams[i]->hwaccel_device);
200 av_freep(&input_streams[i]);
201 }
202
203 if (vstats_file)
204 fclose(vstats_file);
205 av_free(vstats_filename);
206
207 av_freep(&input_streams);
208 av_freep(&input_files);
209 av_freep(&output_streams);
210 av_freep(&output_files);
211
212 uninit_opts();
213
214 avformat_network_deinit();
215
216 if (received_sigterm) {
217 av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
218 (int) received_sigterm);
219 exit (255);
220 }
221 }
222
223 void assert_avoptions(AVDictionary *m)
224 {
225 AVDictionaryEntry *t;
226 if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
227 av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
228 exit_program(1);
229 }
230 }
231
232 static void abort_codec_experimental(AVCodec *c, int encoder)
233 {
234 const char *codec_string = encoder ? "encoder" : "decoder";
235 AVCodec *codec;
236 av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
237 "results.\nAdd '-strict experimental' if you want to use it.\n",
238 codec_string, c->name);
239 codec = encoder ? avcodec_find_encoder(c->id) : avcodec_find_decoder(c->id);
240 if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
241 av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
242 codec_string, codec->name);
243 exit_program(1);
244 }
245
246 /*
247 * Update the requested input sample format based on the output sample format.
248 * This is currently only used to request float output from decoders which
249 * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
250 * Ideally this will be removed in the future when decoders do not do format
251 * conversion and only output in their native format.
252 */
253 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
254 AVCodecContext *enc)
255 {
256 /* if sample formats match or a decoder sample format has already been
257 requested, just return */
258 if (enc->sample_fmt == dec->sample_fmt ||
259 dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
260 return;
261
262 /* if decoder supports more than one output format */
263 if (dec_codec && dec_codec->sample_fmts &&
264 dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
265 dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
266 const enum AVSampleFormat *p;
267 int min_dec = INT_MAX, min_inc = INT_MAX;
268 enum AVSampleFormat dec_fmt = AV_SAMPLE_FMT_NONE;
269 enum AVSampleFormat inc_fmt = AV_SAMPLE_FMT_NONE;
270
271 /* find a matching sample format in the encoder */
272 for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
273 if (*p == enc->sample_fmt) {
274 dec->request_sample_fmt = *p;
275 return;
276 } else {
277 enum AVSampleFormat dfmt = av_get_packed_sample_fmt(*p);
278 enum AVSampleFormat efmt = av_get_packed_sample_fmt(enc->sample_fmt);
279 int fmt_diff = 32 * abs(dfmt - efmt);
280 if (av_sample_fmt_is_planar(*p) !=
281 av_sample_fmt_is_planar(enc->sample_fmt))
282 fmt_diff++;
283 if (dfmt == efmt) {
284 min_inc = fmt_diff;
285 inc_fmt = *p;
286 } else if (dfmt > efmt) {
287 if (fmt_diff < min_inc) {
288 min_inc = fmt_diff;
289 inc_fmt = *p;
290 }
291 } else {
292 if (fmt_diff < min_dec) {
293 min_dec = fmt_diff;
294 dec_fmt = *p;
295 }
296 }
297 }
298 }
299
300 /* if none match, provide the one that matches quality closest */
301 dec->request_sample_fmt = min_inc != INT_MAX ? inc_fmt : dec_fmt;
302 }
303 }
304
305 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
306 {
307 AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
308 AVCodecContext *avctx = ost->st->codec;
309 int ret;
310
311 /*
312 * Audio encoders may split the packets -- #frames in != #packets out.
313 * But there is no reordering, so we can limit the number of output packets
314 * by simply dropping them here.
315 * Counting encoded video frames needs to be done separately because of
316 * reordering, see do_video_out()
317 */
318 if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
319 if (ost->frame_number >= ost->max_frames) {
320 av_free_packet(pkt);
321 return;
322 }
323 ost->frame_number++;
324 }
325
326 while (bsfc) {
327 AVPacket new_pkt = *pkt;
328 int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
329 &new_pkt.data, &new_pkt.size,
330 pkt->data, pkt->size,
331 pkt->flags & AV_PKT_FLAG_KEY);
332 if (a > 0) {
333 av_free_packet(pkt);
334 new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
335 av_buffer_default_free, NULL, 0);
336 if (!new_pkt.buf)
337 exit_program(1);
338 } else if (a < 0) {
339 av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
340 bsfc->filter->name, pkt->stream_index,
341 avctx->codec ? avctx->codec->name : "copy");
342 print_error("", a);
343 if (exit_on_error)
344 exit_program(1);
345 }
346 *pkt = new_pkt;
347
348 bsfc = bsfc->next;
349 }
350
351 if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS) &&
352 ost->last_mux_dts != AV_NOPTS_VALUE &&
353 pkt->dts < ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT)) {
354 av_log(NULL, AV_LOG_WARNING, "Non-monotonous DTS in output stream "
355 "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
356 ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
357 if (exit_on_error) {
358 av_log(NULL, AV_LOG_FATAL, "aborting.\n");
359 exit_program(1);
360 }
361 av_log(NULL, AV_LOG_WARNING, "changing to %"PRId64". This may result "
362 "in incorrect timestamps in the output file.\n",
363 ost->last_mux_dts + 1);
364 pkt->dts = ost->last_mux_dts + 1;
365 if (pkt->pts != AV_NOPTS_VALUE)
366 pkt->pts = FFMAX(pkt->pts, pkt->dts);
367 }
368 ost->last_mux_dts = pkt->dts;
369
370 ost->data_size += pkt->size;
371
372 pkt->stream_index = ost->index;
373 ret = av_interleaved_write_frame(s, pkt);
374 if (ret < 0) {
375 print_error("av_interleaved_write_frame()", ret);
376 exit_program(1);
377 }
378 }
379
380 static int check_recording_time(OutputStream *ost)
381 {
382 OutputFile *of = output_files[ost->file_index];
383
384 if (of->recording_time != INT64_MAX &&
385 av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
386 AV_TIME_BASE_Q) >= 0) {
387 ost->finished = 1;
388 return 0;
389 }
390 return 1;
391 }
392
393 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
394 AVFrame *frame)
395 {
396 AVCodecContext *enc = ost->st->codec;
397 AVPacket pkt;
398 int got_packet = 0;
399
400 av_init_packet(&pkt);
401 pkt.data = NULL;
402 pkt.size = 0;
403
404 if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
405 frame->pts = ost->sync_opts;
406 ost->sync_opts = frame->pts + frame->nb_samples;
407
408 if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
409 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
410 exit_program(1);
411 }
412
413 if (got_packet) {
414 if (pkt.pts != AV_NOPTS_VALUE)
415 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
416 if (pkt.dts != AV_NOPTS_VALUE)
417 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
418 if (pkt.duration > 0)
419 pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
420
421 write_frame(s, &pkt, ost);
422 }
423 }
424
425 static void do_subtitle_out(AVFormatContext *s,
426 OutputStream *ost,
427 InputStream *ist,
428 AVSubtitle *sub,
429 int64_t pts)
430 {
431 static uint8_t *subtitle_out = NULL;
432 int subtitle_out_max_size = 1024 * 1024;
433 int subtitle_out_size, nb, i;
434 AVCodecContext *enc;
435 AVPacket pkt;
436
437 if (pts == AV_NOPTS_VALUE) {
438 av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
439 if (exit_on_error)
440 exit_program(1);
441 return;
442 }
443
444 enc = ost->st->codec;
445
446 if (!subtitle_out) {
447 subtitle_out = av_malloc(subtitle_out_max_size);
448 }
449
450 /* Note: DVB subtitle need one packet to draw them and one other
451 packet to clear them */
452 /* XXX: signal it in the codec context ? */
453 if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
454 nb = 2;
455 else
456 nb = 1;
457
458 for (i = 0; i < nb; i++) {
459 ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
460 if (!check_recording_time(ost))
461 return;
462
463 sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
464 // start_display_time is required to be 0
465 sub->pts += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
466 sub->end_display_time -= sub->start_display_time;
467 sub->start_display_time = 0;
468 subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
469 subtitle_out_max_size, sub);
470 if (subtitle_out_size < 0) {
471 av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
472 exit_program(1);
473 }
474
475 av_init_packet(&pkt);
476 pkt.data = subtitle_out;
477 pkt.size = subtitle_out_size;
478 pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
479 if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
480 /* XXX: the pts correction is handled here. Maybe handling
481 it in the codec would be better */
482 if (i == 0)
483 pkt.pts += 90 * sub->start_display_time;
484 else
485 pkt.pts += 90 * sub->end_display_time;
486 }
487 write_frame(s, &pkt, ost);
488 }
489 }
490
491 static void do_video_out(AVFormatContext *s,
492 OutputStream *ost,
493 AVFrame *in_picture,
494 int *frame_size)
495 {
496 int ret, format_video_sync;
497 AVPacket pkt;
498 AVCodecContext *enc = ost->st->codec;
499
500 *frame_size = 0;
501
502 format_video_sync = video_sync_method;
503 if (format_video_sync == VSYNC_AUTO)
504 format_video_sync = (s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH :
505 (s->oformat->flags & AVFMT_VARIABLE_FPS) ? VSYNC_VFR : VSYNC_CFR;
506 if (format_video_sync != VSYNC_PASSTHROUGH &&
507 ost->frame_number &&
508 in_picture->pts != AV_NOPTS_VALUE &&
509 in_picture->pts < ost->sync_opts) {
510 nb_frames_drop++;
511 av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
512 return;
513 }
514
515 if (in_picture->pts == AV_NOPTS_VALUE)
516 in_picture->pts = ost->sync_opts;
517 ost->sync_opts = in_picture->pts;
518
519
520 if (!ost->frame_number)
521 ost->first_pts = in_picture->pts;
522
523 av_init_packet(&pkt);
524 pkt.data = NULL;
525 pkt.size = 0;
526
527 if (ost->frame_number >= ost->max_frames)
528 return;
529
530 if (s->oformat->flags & AVFMT_RAWPICTURE &&
531 enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
532 /* raw pictures are written as AVPicture structure to
533 avoid any copies. We support temporarily the older
534 method. */
535 enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
536 enc->coded_frame->top_field_first = in_picture->top_field_first;
537 pkt.data = (uint8_t *)in_picture;
538 pkt.size = sizeof(AVPicture);
539 pkt.pts = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
540 pkt.flags |= AV_PKT_FLAG_KEY;
541
542 write_frame(s, &pkt, ost);
543 } else {
544 int got_packet;
545
546 if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME) &&
547 ost->top_field_first >= 0)
548 in_picture->top_field_first = !!ost->top_field_first;
549
550 in_picture->quality = ost->st->codec->global_quality;
551 if (!enc->me_threshold)
552 in_picture->pict_type = 0;
553 if (ost->forced_kf_index < ost->forced_kf_count &&
554 in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
555 in_picture->pict_type = AV_PICTURE_TYPE_I;
556 ost->forced_kf_index++;
557 }
558 ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
559 if (ret < 0) {
560 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
561 exit_program(1);
562 }
563
564 if (got_packet) {
565 if (pkt.pts != AV_NOPTS_VALUE)
566 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
567 if (pkt.dts != AV_NOPTS_VALUE)
568 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
569
570 write_frame(s, &pkt, ost);
571 *frame_size = pkt.size;
572
573 /* if two pass, output log */
574 if (ost->logfile && enc->stats_out) {
575 fprintf(ost->logfile, "%s", enc->stats_out);
576 }
577 }
578 }
579 ost->sync_opts++;
580 /*
581 * For video, number of frames in == number of packets out.
582 * But there may be reordering, so we can't throw away frames on encoder
583 * flush, we need to limit them here, before they go into encoder.
584 */
585 ost->frame_number++;
586 }
587
588 static double psnr(double d)
589 {
590 return -10.0 * log(d) / log(10.0);
591 }
592
593 static void do_video_stats(OutputStream *ost, int frame_size)
594 {
595 AVCodecContext *enc;
596 int frame_number;
597 double ti1, bitrate, avg_bitrate;
598
599 /* this is executed just the first time do_video_stats is called */
600 if (!vstats_file) {
601 vstats_file = fopen(vstats_filename, "w");
602 if (!vstats_file) {
603 perror("fopen");
604 exit_program(1);
605 }
606 }
607
608 enc = ost->st->codec;
609 if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
610 frame_number = ost->frame_number;
611 fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
612 if (enc->flags&CODEC_FLAG_PSNR)
613 fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
614
615 fprintf(vstats_file,"f_size= %6d ", frame_size);
616 /* compute pts value */
617 ti1 = ost->sync_opts * av_q2d(enc->time_base);
618 if (ti1 < 0.01)
619 ti1 = 0.01;
620
621 bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
622 avg_bitrate = (double)(ost->data_size * 8) / ti1 / 1000.0;
623 fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
624 (double)ost->data_size / 1024, ti1, bitrate, avg_bitrate);
625 fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
626 }
627 }
628
629 /*
630 * Read one frame for lavfi output for ost and encode it.
631 */
632 static int poll_filter(OutputStream *ost)
633 {
634 OutputFile *of = output_files[ost->file_index];
635 AVFrame *filtered_frame = NULL;
636 int frame_size, ret;
637
638 if (!ost->filtered_frame && !(ost->filtered_frame = av_frame_alloc())) {
639 return AVERROR(ENOMEM);
640 }
641 filtered_frame = ost->filtered_frame;
642
643 if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
644 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
645 ret = av_buffersink_get_samples(ost->filter->filter, filtered_frame,
646 ost->st->codec->frame_size);
647 else
648 ret = av_buffersink_get_frame(ost->filter->filter, filtered_frame);
649
650 if (ret < 0)
651 return ret;
652
653 if (filtered_frame->pts != AV_NOPTS_VALUE) {
654 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
655 filtered_frame->pts = av_rescale_q(filtered_frame->pts,
656 ost->filter->filter->inputs[0]->time_base,
657 ost->st->codec->time_base) -
658 av_rescale_q(start_time,
659 AV_TIME_BASE_Q,
660 ost->st->codec->time_base);
661 }
662
663 switch (ost->filter->filter->inputs[0]->type) {
664 case AVMEDIA_TYPE_VIDEO:
665 if (!ost->frame_aspect_ratio)
666 ost->st->codec->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
667
668 do_video_out(of->ctx, ost, filtered_frame, &frame_size);
669 if (vstats_filename && frame_size)
670 do_video_stats(ost, frame_size);
671 break;
672 case AVMEDIA_TYPE_AUDIO:
673 do_audio_out(of->ctx, ost, filtered_frame);
674 break;
675 default:
676 // TODO support subtitle filters
677 av_assert0(0);
678 }
679
680 av_frame_unref(filtered_frame);
681
682 return 0;
683 }
684
685 /*
686 * Read as many frames from possible from lavfi and encode them.
687 *
688 * Always read from the active stream with the lowest timestamp. If no frames
689 * are available for it then return EAGAIN and wait for more input. This way we
690 * can use lavfi sources that generate unlimited amount of frames without memory
691 * usage exploding.
692 */
693 static int poll_filters(void)
694 {
695 int i, j, ret = 0;
696
697 while (ret >= 0 && !received_sigterm) {
698 OutputStream *ost = NULL;
699 int64_t min_pts = INT64_MAX;
700
701 /* choose output stream with the lowest timestamp */
702 for (i = 0; i < nb_output_streams; i++) {
703 int64_t pts = output_streams[i]->sync_opts;
704
705 if (!output_streams[i]->filter || output_streams[i]->finished)
706 continue;
707
708 pts = av_rescale_q(pts, output_streams[i]->st->codec->time_base,
709 AV_TIME_BASE_Q);
710 if (pts < min_pts) {
711 min_pts = pts;
712 ost = output_streams[i];
713 }
714 }
715
716 if (!ost)
717 break;
718
719 ret = poll_filter(ost);
720
721 if (ret == AVERROR_EOF) {
722 OutputFile *of = output_files[ost->file_index];
723
724 ost->finished = 1;
725
726 if (of->shortest) {
727 for (j = 0; j < of->ctx->nb_streams; j++)
728 output_streams[of->ost_index + j]->finished = 1;
729 }
730
731 ret = 0;
732 } else if (ret == AVERROR(EAGAIN))
733 return 0;
734 }
735
736 return ret;
737 }
738
739 static void print_report(int is_last_report, int64_t timer_start)
740 {
741 char buf[1024];
742 OutputStream *ost;
743 AVFormatContext *oc;
744 int64_t total_size;
745 AVCodecContext *enc;
746 int frame_number, vid, i;
747 double bitrate, ti1, pts;
748 static int64_t last_time = -1;
749 static int qp_histogram[52];
750
751 if (!print_stats && !is_last_report)
752 return;
753
754 if (!is_last_report) {
755 int64_t cur_time;
756 /* display the report every 0.5 seconds */
757 cur_time = av_gettime();
758 if (last_time == -1) {
759 last_time = cur_time;
760 return;
761 }
762 if ((cur_time - last_time) < 500000)
763 return;
764 last_time = cur_time;
765 }
766
767
768 oc = output_files[0]->ctx;
769
770 total_size = avio_size(oc->pb);
771 if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
772 total_size = avio_tell(oc->pb);
773 if (total_size < 0) {
774 char errbuf[128];
775 av_strerror(total_size, errbuf, sizeof(errbuf));
776 av_log(NULL, AV_LOG_VERBOSE, "Bitrate not available, "
777 "avio_tell() failed: %s\n", errbuf);
778 total_size = 0;
779 }
780
781 buf[0] = '\0';
782 ti1 = 1e10;
783 vid = 0;
784 for (i = 0; i < nb_output_streams; i++) {
785 float q = -1;
786 ost = output_streams[i];
787 enc = ost->st->codec;
788 if (!ost->stream_copy && enc->coded_frame)
789 q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
790 if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
791 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
792 }
793 if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
794 float t = (av_gettime() - timer_start) / 1000000.0;
795
796 frame_number = ost->frame_number;
797 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
798 frame_number, (t > 1) ? (int)(frame_number / t + 0.5) : 0, q);
799 if (is_last_report)
800 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
801 if (qp_hist) {
802 int j;
803 int qp = lrintf(q);
804 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
805 qp_histogram[qp]++;
806 for (j = 0; j < 32; j++)
807 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
808 }
809 if (enc->flags&CODEC_FLAG_PSNR) {
810 int j;
811 double error, error_sum = 0;
812 double scale, scale_sum = 0;
813 char type[3] = { 'Y','U','V' };
814 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
815 for (j = 0; j < 3; j++) {
816 if (is_last_report) {
817 error = enc->error[j];
818 scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
819 } else {
820 error = enc->coded_frame->error[j];
821 scale = enc->width * enc->height * 255.0 * 255.0;
822 }
823 if (j)
824 scale /= 4;
825 error_sum += error;
826 scale_sum += scale;
827 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
828 }
829 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
830 }
831 vid = 1;
832 }
833 /* compute min output value */
834 pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
835 if ((pts < ti1) && (pts > 0))
836 ti1 = pts;
837 }
838 if (ti1 < 0.01)
839 ti1 = 0.01;
840
841 bitrate = (double)(total_size * 8) / ti1 / 1000.0;
842
843 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
844 "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
845 (double)total_size / 1024, ti1, bitrate);
846
847 if (nb_frames_drop)
848 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " drop=%d",
849 nb_frames_drop);
850
851 av_log(NULL, AV_LOG_INFO, "%s \r", buf);
852
853 fflush(stderr);
854
855 if (is_last_report) {
856 uint64_t video_size = 0, audio_size = 0, extra_size = 0, other_size = 0;
857 uint64_t data_size = 0;
858 float percent = -1.0;
859
860 for (i = 0; i < nb_output_streams; i++) {
861 OutputStream *ost = output_streams[i];
862 switch (ost->st->codec->codec_type) {
863 case AVMEDIA_TYPE_VIDEO: video_size += ost->data_size; break;
864 case AVMEDIA_TYPE_AUDIO: audio_size += ost->data_size; break;
865 default: other_size += ost->data_size; break;
866 }
867 extra_size += ost->st->codec->extradata_size;
868 data_size += ost->data_size;
869 }
870
871 if (data_size && total_size >= data_size)
872 percent = 100.0 * (total_size - data_size) / data_size;
873
874 av_log(NULL, AV_LOG_INFO, "\n");
875 av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB other streams:%1.0fkB global headers:%1.0fkB muxing overhead: ",
876 video_size / 1024.0,
877 audio_size / 1024.0,
878 other_size / 1024.0,
879 extra_size / 1024.0);
880 if (percent >= 0.0)
881 av_log(NULL, AV_LOG_INFO, "%f%%", percent);
882 else
883 av_log(NULL, AV_LOG_INFO, "unknown");
884 av_log(NULL, AV_LOG_INFO, "\n");
885 }
886 }
887
888 static void flush_encoders(void)
889 {
890 int i, ret;
891
892 for (i = 0; i < nb_output_streams; i++) {
893 OutputStream *ost = output_streams[i];
894 AVCodecContext *enc = ost->st->codec;
895 AVFormatContext *os = output_files[ost->file_index]->ctx;
896 int stop_encoding = 0;
897
898 if (!ost->encoding_needed)
899 continue;
900
901 if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
902 continue;
903 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
904 continue;
905
906 for (;;) {
907 int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
908 const char *desc;
909
910 switch (ost->st->codec->codec_type) {
911 case AVMEDIA_TYPE_AUDIO:
912 encode = avcodec_encode_audio2;
913 desc = "Audio";
914 break;
915 case AVMEDIA_TYPE_VIDEO:
916 encode = avcodec_encode_video2;
917 desc = "Video";
918 break;
919 default:
920 stop_encoding = 1;
921 }
922
923 if (encode) {
924 AVPacket pkt;
925 int got_packet;
926 av_init_packet(&pkt);
927 pkt.data = NULL;
928 pkt.size = 0;
929
930 ret = encode(enc, &pkt, NULL, &got_packet);
931 if (ret < 0) {
932 av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
933 exit_program(1);
934 }
935 if (ost->logfile && enc->stats_out) {
936 fprintf(ost->logfile, "%s", enc->stats_out);
937 }
938 if (!got_packet) {
939 stop_encoding = 1;
940 break;
941 }
942 if (pkt.pts != AV_NOPTS_VALUE)
943 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
944 if (pkt.dts != AV_NOPTS_VALUE)
945 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
946 if (pkt.duration > 0)
947 pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
948 write_frame(os, &pkt, ost);
949 }
950
951 if (stop_encoding)
952 break;
953 }
954 }
955 }
956
957 /*
958 * Check whether a packet from ist should be written into ost at this time
959 */
960 static int check_output_constraints(InputStream *ist, OutputStream *ost)
961 {
962 OutputFile *of = output_files[ost->file_index];
963 int ist_index = input_files[ist->file_index]->ist_index + ist->st->index;
964
965 if (ost->source_index != ist_index)
966 return 0;
967
968 if (of->start_time != AV_NOPTS_VALUE && ist->last_dts < of->start_time)
969 return 0;
970
971 return 1;
972 }
973
974 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
975 {
976 OutputFile *of = output_files[ost->file_index];
977 InputFile *f = input_files [ist->file_index];
978 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
979 int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
980 AVPacket opkt;
981
982 av_init_packet(&opkt);
983
984 if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
985 !ost->copy_initial_nonkeyframes)
986 return;
987
988 if (of->recording_time != INT64_MAX &&
989 ist->last_dts >= of->recording_time + start_time) {
990 ost->finished = 1;
991 return;
992 }
993
994 if (f->recording_time != INT64_MAX) {
995 start_time = f->ctx->start_time;
996 if (f->start_time != AV_NOPTS_VALUE)
997 start_time += f->start_time;
998 if (ist->last_dts >= f->recording_time + start_time) {
999 ost->finished = 1;
1000 return;
1001 }
1002 }
1003
1004 /* force the input stream PTS */
1005 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
1006 ost->sync_opts++;
1007
1008 if (pkt->pts != AV_NOPTS_VALUE)
1009 opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1010 else
1011 opkt.pts = AV_NOPTS_VALUE;
1012
1013 if (pkt->dts == AV_NOPTS_VALUE)
1014 opkt.dts = av_rescale_q(ist->last_dts, AV_TIME_BASE_Q, ost->st->time_base);
1015 else
1016 opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1017 opkt.dts -= ost_tb_start_time;
1018
1019 opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1020 opkt.flags = pkt->flags;
1021
1022 // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1023 if ( ost->st->codec->codec_id != AV_CODEC_ID_H264
1024 && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1025 && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1026 && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1027 ) {
1028 if (av_parser_change(ost->parser, ost->st->codec,
1029 &opkt.data, &opkt.size,
1030 pkt->data, pkt->size,
1031 pkt->flags & AV_PKT_FLAG_KEY)) {
1032 opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1033 if (!opkt.buf)
1034 exit_program(1);
1035 }
1036 } else {
1037 opkt.data = pkt->data;
1038 opkt.size = pkt->size;
1039 }
1040
1041 write_frame(of->ctx, &opkt, ost);
1042 ost->st->codec->frame_number++;
1043 }
1044
1045 int guess_input_channel_layout(InputStream *ist)
1046 {
1047 AVCodecContext *dec = ist->st->codec;
1048
1049 if (!dec->channel_layout) {
1050 char layout_name[256];
1051
1052 dec->channel_layout = av_get_default_channel_layout(dec->channels);
1053 if (!dec->channel_layout)
1054 return 0;
1055 av_get_channel_layout_string(layout_name, sizeof(layout_name),
1056 dec->channels, dec->channel_layout);
1057 av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for Input Stream "
1058 "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1059 }
1060 return 1;
1061 }
1062
1063 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1064 {
1065 AVFrame *decoded_frame, *f;
1066 AVCodecContext *avctx = ist->st->codec;
1067 int i, ret, err = 0, resample_changed;
1068
1069 if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1070 return AVERROR(ENOMEM);
1071 if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1072 return AVERROR(ENOMEM);
1073 decoded_frame = ist->decoded_frame;
1074
1075 ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1076 if (!*got_output || ret < 0) {
1077 if (!pkt->size) {
1078 for (i = 0; i < ist->nb_filters; i++)
1079 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1080 }
1081 return ret;
1082 }
1083
1084 /* if the decoder provides a pts, use it instead of the last packet pts.
1085 the decoder could be delaying output by a packet or more. */
1086 if (decoded_frame->pts != AV_NOPTS_VALUE)
1087 ist->next_dts = decoded_frame->pts;
1088 else if (pkt->pts != AV_NOPTS_VALUE) {
1089 decoded_frame->pts = pkt->pts;
1090 pkt->pts = AV_NOPTS_VALUE;
1091 }
1092
1093 resample_changed = ist->resample_sample_fmt != decoded_frame->format ||
1094 ist->resample_channels != avctx->channels ||
1095 ist->resample_channel_layout != decoded_frame->channel_layout ||
1096 ist->resample_sample_rate != decoded_frame->sample_rate;
1097 if (resample_changed) {
1098 char layout1[64], layout2[64];
1099
1100 if (!guess_input_channel_layout(ist)) {
1101 av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1102 "layout for Input Stream #%d.%d\n", ist->file_index,
1103 ist->st->index);
1104 exit_program(1);
1105 }
1106 decoded_frame->channel_layout = avctx->channel_layout;
1107
1108 av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1109 ist->resample_channel_layout);
1110 av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1111 decoded_frame->channel_layout);
1112
1113 av_log(NULL, AV_LOG_INFO,
1114 "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",
1115 ist->file_index, ist->st->index,
1116 ist->resample_sample_rate, av_get_sample_fmt_name(ist->resample_sample_fmt),
1117 ist->resample_channels, layout1,
1118 decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1119 avctx->channels, layout2);
1120
1121 ist->resample_sample_fmt = decoded_frame->format;
1122 ist->resample_sample_rate = decoded_frame->sample_rate;
1123 ist->resample_channel_layout = decoded_frame->channel_layout;
1124 ist->resample_channels = avctx->channels;
1125
1126 for (i = 0; i < nb_filtergraphs; i++)
1127 if (ist_in_filtergraph(filtergraphs[i], ist) &&
1128 configure_filtergraph(filtergraphs[i]) < 0) {
1129 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1130 exit_program(1);
1131 }
1132 }
1133
1134 if (decoded_frame->pts != AV_NOPTS_VALUE)
1135 decoded_frame->pts = av_rescale_q(decoded_frame->pts,
1136 ist->st->time_base,
1137 (AVRational){1, ist->st->codec->sample_rate});
1138 for (i = 0; i < ist->nb_filters; i++) {
1139 if (i < ist->nb_filters - 1) {
1140 f = ist->filter_frame;
1141 err = av_frame_ref(f, decoded_frame);
1142 if (err < 0)
1143 break;
1144 } else
1145 f = decoded_frame;
1146
1147 err = av_buffersrc_add_frame(ist->filters[i]->filter, f);
1148 if (err < 0)
1149 break;
1150 }
1151
1152 av_frame_unref(ist->filter_frame);
1153 av_frame_unref(decoded_frame);
1154 return err < 0 ? err : ret;
1155 }
1156
1157 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1158 {
1159 AVFrame *decoded_frame, *f;
1160 int i, ret = 0, err = 0, resample_changed;
1161
1162 if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1163 return AVERROR(ENOMEM);
1164 if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1165 return AVERROR(ENOMEM);
1166 decoded_frame = ist->decoded_frame;
1167
1168 ret = avcodec_decode_video2(ist->st->codec,
1169 decoded_frame, got_output, pkt);
1170 if (!*got_output || ret < 0) {
1171 if (!pkt->size) {
1172 for (i = 0; i < ist->nb_filters; i++)
1173 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1174 }
1175 return ret;
1176 }
1177
1178 if (ist->hwaccel_retrieve_data && decoded_frame->format == ist->hwaccel_pix_fmt) {
1179 err = ist->hwaccel_retrieve_data(ist->st->codec, decoded_frame);
1180 if (err < 0)
1181 goto fail;
1182 }
1183 ist->hwaccel_retrieved_pix_fmt = decoded_frame->format;
1184
1185 decoded_frame->pts = guess_correct_pts(&ist->pts_ctx, decoded_frame->pkt_pts,
1186 decoded_frame->pkt_dts);
1187 pkt->size = 0;
1188
1189 if (ist->st->sample_aspect_ratio.num)
1190 decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1191
1192 resample_changed = ist->resample_width != decoded_frame->width ||
1193 ist->resample_height != decoded_frame->height ||
1194 ist->resample_pix_fmt != decoded_frame->format;
1195 if (resample_changed) {
1196 av_log(NULL, AV_LOG_INFO,
1197 "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1198 ist->file_index, ist->st->index,
1199 ist->resample_width, ist->resample_height, av_get_pix_fmt_name(ist->resample_pix_fmt),
1200 decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1201
1202 ret = poll_filters();
1203 if (ret < 0 && (ret != AVERROR_EOF && ret != AVERROR(EAGAIN)))
1204 av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
1205
1206 ist->resample_width = decoded_frame->width;
1207 ist->resample_height = decoded_frame->height;
1208 ist->resample_pix_fmt = decoded_frame->format;
1209
1210 for (i = 0; i < nb_filtergraphs; i++)
1211 if (ist_in_filtergraph(filtergraphs[i], ist) &&
1212 configure_filtergraph(filtergraphs[i]) < 0) {
1213 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1214 exit_program(1);
1215 }
1216 }
1217
1218 for (i = 0; i < ist->nb_filters; i++) {
1219 if (i < ist->nb_filters - 1) {
1220 f = ist->filter_frame;
1221 err = av_frame_ref(f, decoded_frame);
1222 if (err < 0)
1223 break;
1224 } else
1225 f = decoded_frame;
1226
1227 err = av_buffersrc_add_frame(ist->filters[i]->filter, f);
1228 if (err < 0)
1229 break;
1230 }
1231
1232 fail:
1233 av_frame_unref(ist->filter_frame);
1234 av_frame_unref(decoded_frame);
1235 return err < 0 ? err : ret;
1236 }
1237
1238 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1239 {
1240 AVSubtitle subtitle;
1241 int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1242 &subtitle, got_output, pkt);
1243 if (ret < 0)
1244 return ret;
1245 if (!*got_output)
1246 return ret;
1247
1248 for (i = 0; i < nb_output_streams; i++) {
1249 OutputStream *ost = output_streams[i];
1250
1251 if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1252 continue;
1253
1254 do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pkt->pts);
1255 }
1256
1257 avsubtitle_free(&subtitle);
1258 return ret;
1259 }
1260
1261 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1262 static int output_packet(InputStream *ist, const AVPacket *pkt)
1263 {
1264 int i;
1265 int got_output;
1266 AVPacket avpkt;
1267
1268 if (ist->next_dts == AV_NOPTS_VALUE)
1269 ist->next_dts = ist->last_dts;
1270
1271 if (pkt == NULL) {
1272 /* EOF handling */
1273 av_init_packet(&avpkt);
1274 avpkt.data = NULL;
1275 avpkt.size = 0;
1276 goto handle_eof;
1277 } else {
1278 avpkt = *pkt;
1279 }
1280
1281 if (pkt->dts != AV_NOPTS_VALUE)
1282 ist->next_dts = ist->last_dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1283
1284 // while we have more to decode or while the decoder did output something on EOF
1285 while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1286 int ret = 0;
1287 handle_eof:
1288
1289 ist->last_dts = ist->next_dts;
1290
1291 if (avpkt.size && avpkt.size != pkt->size) {
1292 av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1293 "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1294 ist->showed_multi_packet_warning = 1;
1295 }
1296
1297 switch (ist->st->codec->codec_type) {
1298 case AVMEDIA_TYPE_AUDIO:
1299 ret = decode_audio (ist, &avpkt, &got_output);
1300 break;
1301 case AVMEDIA_TYPE_VIDEO:
1302 ret = decode_video (ist, &avpkt, &got_output);
1303 if (avpkt.duration)
1304 ist->next_dts += av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1305 else if (ist->st->avg_frame_rate.num)
1306 ist->next_dts += av_rescale_q(1, av_inv_q(ist->st->avg_frame_rate),
1307 AV_TIME_BASE_Q);
1308 else if (ist->st->codec->time_base.num != 0) {
1309 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 :
1310 ist->st->codec->ticks_per_frame;
1311 ist->next_dts += av_rescale_q(ticks, ist->st->codec->time_base, AV_TIME_BASE_Q);
1312 }
1313 break;
1314 case AVMEDIA_TYPE_SUBTITLE:
1315 ret = transcode_subtitles(ist, &avpkt, &got_output);
1316 break;
1317 default:
1318 return -1;
1319 }
1320
1321 if (ret < 0)
1322 return ret;
1323 // touch data and size only if not EOF
1324 if (pkt) {
1325 avpkt.data += ret;
1326 avpkt.size -= ret;
1327 }
1328 if (!got_output) {
1329 continue;
1330 }
1331 }
1332
1333 /* handle stream copy */
1334 if (!ist->decoding_needed) {
1335 ist->last_dts = ist->next_dts;
1336 switch (ist->st->codec->codec_type) {
1337 case AVMEDIA_TYPE_AUDIO:
1338 ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1339 ist->st->codec->sample_rate;
1340 break;
1341 case AVMEDIA_TYPE_VIDEO:
1342 if (ist->st->codec->time_base.num != 0) {
1343 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1344 ist->next_dts += ((int64_t)AV_TIME_BASE *
1345 ist->st->codec->time_base.num * ticks) /
1346 ist->st->codec->time_base.den;
1347 }
1348 break;
1349 }
1350 }
1351 for (i = 0; pkt && i < nb_output_streams; i++) {
1352 OutputStream *ost = output_streams[i];
1353
1354 if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1355 continue;
1356
1357 do_streamcopy(ist, ost, pkt);
1358 }
1359
1360 return 0;
1361 }
1362
1363 static void print_sdp(void)
1364 {
1365 char sdp[16384];
1366 int i;
1367 AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1368
1369 if (!avc)
1370 exit_program(1);
1371 for (i = 0; i < nb_output_files; i++)
1372 avc[i] = output_files[i]->ctx;
1373
1374 av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1375 printf("SDP:\n%s\n", sdp);
1376 fflush(stdout);
1377 av_freep(&avc);
1378 }
1379
1380 static const HWAccel *get_hwaccel(enum AVPixelFormat pix_fmt)
1381 {
1382 int i;
1383 for (i = 0; hwaccels[i].name; i++)
1384 if (hwaccels[i].pix_fmt == pix_fmt)
1385 return &hwaccels[i];
1386 return NULL;
1387 }
1388
1389 static enum AVPixelFormat get_format(AVCodecContext *s, const enum AVPixelFormat *pix_fmts)
1390 {
1391 InputStream *ist = s->opaque;
1392 const enum AVPixelFormat *p;
1393 int ret;
1394
1395 for (p = pix_fmts; *p != -1; p++) {
1396 const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(*p);
1397 const HWAccel *hwaccel;
1398
1399 if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
1400 break;
1401
1402 hwaccel = get_hwaccel(*p);
1403 if (!hwaccel ||
1404 (ist->active_hwaccel_id && ist->active_hwaccel_id != hwaccel->id) ||
1405 (ist->hwaccel_id != HWACCEL_AUTO && ist->hwaccel_id != hwaccel->id))
1406 continue;
1407
1408 ret = hwaccel->init(s);
1409 if (ret < 0) {
1410 if (ist->hwaccel_id == hwaccel->id) {
1411 av_log(NULL, AV_LOG_FATAL,
1412 "%s hwaccel requested for input stream #%d:%d, "
1413 "but cannot be initialized.\n", hwaccel->name,
1414 ist->file_index, ist->st->index);
1415 exit_program(1);
1416 }
1417 continue;
1418 }
1419 ist->active_hwaccel_id = hwaccel->id;
1420 ist->hwaccel_pix_fmt = *p;
1421 break;
1422 }
1423
1424 return *p;
1425 }
1426
1427 static int get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
1428 {
1429 InputStream *ist = s->opaque;
1430
1431 if (ist->hwaccel_get_buffer && frame->format == ist->hwaccel_pix_fmt)
1432 return ist->hwaccel_get_buffer(s, frame, flags);
1433
1434 return avcodec_default_get_buffer2(s, frame, flags);
1435 }
1436
1437 static int init_input_stream(int ist_index, char *error, int error_len)
1438 {
1439 int i, ret;
1440 InputStream *ist = input_streams[ist_index];
1441 if (ist->decoding_needed) {
1442 AVCodec *codec = ist->dec;
1443 if (!codec) {
1444 snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d:%d",
1445 ist->st->codec->codec_id, ist->file_index, ist->st->index);
1446 return AVERROR(EINVAL);
1447 }
1448
1449 /* update requested sample format for the decoder based on the
1450 corresponding encoder sample format */
1451 for (i = 0; i < nb_output_streams; i++) {
1452 OutputStream *ost = output_streams[i];
1453 if (ost->source_index == ist_index) {
1454 update_sample_fmt(ist->st->codec, codec, ost->st->codec);
1455 break;
1456 }
1457 }
1458
1459 ist->st->codec->opaque = ist;
1460 ist->st->codec->get_format = get_format;
1461 ist->st->codec->get_buffer2 = get_buffer;
1462 ist->st->codec->thread_safe_callbacks = 1;
1463
1464 av_opt_set_int(ist->st->codec, "refcounted_frames", 1, 0);
1465
1466 if (!av_dict_get(ist->opts, "threads", NULL, 0))
1467 av_dict_set(&ist->opts, "threads", "auto", 0);
1468 if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
1469 char errbuf[128];
1470 if (ret == AVERROR_EXPERIMENTAL)
1471 abort_codec_experimental(codec, 0);
1472
1473 av_strerror(ret, errbuf, sizeof(errbuf));
1474
1475 snprintf(error, error_len,
1476 "Error while opening decoder for input stream "
1477 "#%d:%d : %s",
1478 ist->file_index, ist->st->index, errbuf);
1479 return ret;
1480 }
1481 assert_avoptions(ist->opts);
1482 }
1483
1484 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;
1485 ist->next_dts = AV_NOPTS_VALUE;
1486 init_pts_correction(&ist->pts_ctx);
1487
1488 return 0;
1489 }
1490
1491 static InputStream *get_input_stream(OutputStream *ost)
1492 {
1493 if (ost->source_index >= 0)
1494 return input_streams[ost->source_index];
1495
1496 if (ost->filter) {
1497 FilterGraph *fg = ost->filter->graph;
1498 int i;
1499
1500 for (i = 0; i < fg->nb_inputs; i++)
1501 if (fg->inputs[i]->ist->st->codec->codec_type == ost->st->codec->codec_type)
1502 return fg->inputs[i]->ist;
1503 }
1504
1505 return NULL;
1506 }
1507
1508 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1509 AVCodecContext *avctx)
1510 {
1511 char *p;
1512 int n = 1, i;
1513 int64_t t;
1514
1515 for (p = kf; *p; p++)
1516 if (*p == ',')
1517 n++;
1518 ost->forced_kf_count = n;
1519 ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1520 if (!ost->forced_kf_pts) {
1521 av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1522 exit_program(1);
1523 }
1524
1525 p = kf;
1526 for (i = 0; i < n; i++) {
1527 char *next = strchr(p, ',');
1528
1529 if (next)
1530 *next++ = 0;
1531
1532 t = parse_time_or_die("force_key_frames", p, 1);
1533 ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1534
1535 p = next;
1536 }
1537 }
1538
1539 static int transcode_init(void)
1540 {
1541 int ret = 0, i, j, k;
1542 AVFormatContext *oc;
1543 AVCodecContext *codec;
1544 OutputStream *ost;
1545 InputStream *ist;
1546 char error[1024];
1547 int want_sdp = 1;
1548
1549 /* init framerate emulation */
1550 for (i = 0; i < nb_input_files; i++) {
1551 InputFile *ifile = input_files[i];
1552 if (ifile->rate_emu)
1553 for (j = 0; j < ifile->nb_streams; j++)
1554 input_streams[j + ifile->ist_index]->start = av_gettime();
1555 }
1556
1557 /* output stream init */
1558 for (i = 0; i < nb_output_files; i++) {
1559 oc = output_files[i]->ctx;
1560 if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
1561 av_dump_format(oc, i, oc->filename, 1);
1562 av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
1563 return AVERROR(EINVAL);
1564 }
1565 }
1566
1567 /* init complex filtergraphs */
1568 for (i = 0; i < nb_filtergraphs; i++)
1569 if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
1570 return ret;
1571
1572 /* for each output stream, we compute the right encoding parameters */
1573 for (i = 0; i < nb_output_streams; i++) {
1574 AVCodecContext *icodec = NULL;
1575 ost = output_streams[i];
1576 oc = output_files[ost->file_index]->ctx;
1577 ist = get_input_stream(ost);
1578
1579 if (ost->attachment_filename)
1580 continue;
1581
1582 codec = ost->st->codec;
1583
1584 if (ist) {
1585 icodec = ist->st->codec;
1586
1587 ost->st->disposition = ist->st->disposition;
1588 codec->bits_per_raw_sample = icodec->bits_per_raw_sample;
1589 codec->chroma_sample_location = icodec->chroma_sample_location;
1590 }
1591
1592 if (ost->stream_copy) {
1593 AVRational sar;
1594 uint64_t extra_size;
1595
1596 av_assert0(ist && !ost->filter);
1597
1598 extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
1599
1600 if (extra_size > INT_MAX) {
1601 return AVERROR(EINVAL);
1602 }
1603
1604 /* if stream_copy is selected, no need to decode or encode */
1605 codec->codec_id = icodec->codec_id;
1606 codec->codec_type = icodec->codec_type;
1607
1608 if (!codec->codec_tag) {
1609 if (!oc->oformat->codec_tag ||
1610 av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
1611 av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
1612 codec->codec_tag = icodec->codec_tag;
1613 }
1614
1615 codec->bit_rate = icodec->bit_rate;
1616 codec->rc_max_rate = icodec->rc_max_rate;
1617 codec->rc_buffer_size = icodec->rc_buffer_size;
1618 codec->field_order = icodec->field_order;
1619 codec->extradata = av_mallocz(extra_size);
1620 if (!codec->extradata) {
1621 return AVERROR(ENOMEM);
1622 }
1623 memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
1624 codec->extradata_size = icodec->extradata_size;
1625 if (!copy_tb) {
1626 codec->time_base = icodec->time_base;
1627 codec->time_base.num *= icodec->ticks_per_frame;
1628 av_reduce(&codec->time_base.num, &codec->time_base.den,
1629 codec->time_base.num, codec->time_base.den, INT_MAX);
1630 } else
1631 codec->time_base = ist->st->time_base;
1632
1633 ost->parser = av_parser_init(codec->codec_id);
1634
1635 switch (codec->codec_type) {
1636 case AVMEDIA_TYPE_AUDIO:
1637 if (audio_volume != 256) {
1638 av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
1639 exit_program(1);
1640 }
1641 codec->channel_layout = icodec->channel_layout;
1642 codec->sample_rate = icodec->sample_rate;
1643 codec->channels = icodec->channels;
1644 codec->frame_size = icodec->frame_size;
1645 codec->audio_service_type = icodec->audio_service_type;
1646 codec->block_align = icodec->block_align;
1647 break;
1648 case AVMEDIA_TYPE_VIDEO:
1649 codec->pix_fmt = icodec->pix_fmt;
1650 codec->width = icodec->width;
1651 codec->height = icodec->height;
1652 codec->has_b_frames = icodec->has_b_frames;
1653 if (ost->frame_aspect_ratio)
1654 sar = av_d2q(ost->frame_aspect_ratio * codec->height / codec->width, 255);
1655 else if (ist->st->sample_aspect_ratio.num)
1656 sar = ist->st->sample_aspect_ratio;
1657 else
1658 sar = icodec->sample_aspect_ratio;
1659 ost->st->sample_aspect_ratio = codec->sample_aspect_ratio = sar;
1660 break;
1661 case AVMEDIA_TYPE_SUBTITLE:
1662 codec->width = icodec->width;
1663 codec->height = icodec->height;
1664 break;
1665 case AVMEDIA_TYPE_DATA:
1666 case AVMEDIA_TYPE_ATTACHMENT:
1667 break;
1668 default:
1669 abort();
1670 }
1671 } else {
1672 if (!ost->enc) {
1673 /* should only happen when a default codec is not present. */
1674 snprintf(error, sizeof(error), "Automatic encoder selection "
1675 "failed for output stream #%d:%d. Default encoder for "
1676 "format %s is probably disabled. Please choose an "
1677 "encoder manually.\n", ost->file_index, ost->index,
1678 oc->oformat->name);
1679 ret = AVERROR(EINVAL);
1680 goto dump_format;
1681 }
1682
1683 if (ist)
1684 ist->decoding_needed = 1;
1685 ost->encoding_needed = 1;
1686
1687 /*
1688 * We want CFR output if and only if one of those is true:
1689 * 1) user specified output framerate with -r
1690 * 2) user specified -vsync cfr
1691 * 3) output format is CFR and the user didn't force vsync to
1692 * something else than CFR
1693 *
1694 * in such a case, set ost->frame_rate
1695 */
1696 if (codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1697 !ost->frame_rate.num && ist &&
1698 (video_sync_method == VSYNC_CFR ||
1699 (video_sync_method == VSYNC_AUTO &&
1700 !(oc->oformat->flags & (AVFMT_NOTIMESTAMPS | AVFMT_VARIABLE_FPS))))) {
1701 if (ist->framerate.num)
1702 ost->frame_rate = ist->framerate;
1703 else if (ist->st->avg_frame_rate.num)
1704 ost->frame_rate = ist->st->avg_frame_rate;
1705 else {
1706 av_log(NULL, AV_LOG_WARNING, "Constant framerate requested "
1707 "for the output stream #%d:%d, but no information "
1708 "about the input framerate is available. Falling "
1709 "back to a default value of 25fps. Use the -r option "
1710 "if you want a different framerate.\n",
1711 ost->file_index, ost->index);
1712 ost->frame_rate = (AVRational){ 25, 1 };
1713 }
1714
1715 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
1716 int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
1717 ost->frame_rate = ost->enc->supported_framerates[idx];
1718 }
1719 }
1720
1721 if (!ost->filter &&
1722 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
1723 codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
1724 FilterGraph *fg;
1725 fg = init_simple_filtergraph(ist, ost);
1726 if (configure_filtergraph(fg)) {
1727 av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
1728 exit_program(1);
1729 }
1730 }
1731
1732 switch (codec->codec_type) {
1733 case AVMEDIA_TYPE_AUDIO:
1734 codec->sample_fmt = ost->filter->filter->inputs[0]->format;
1735 codec->sample_rate = ost->filter->filter->inputs[0]->sample_rate;
1736 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
1737 codec->channels = av_get_channel_layout_nb_channels(codec->channel_layout);
1738 codec->time_base = (AVRational){ 1, codec->sample_rate };
1739 break;
1740 case AVMEDIA_TYPE_VIDEO:
1741 codec->time_base = ost->filter->filter->inputs[0]->time_base;
1742
1743 codec->width = ost->filter->filter->inputs[0]->w;
1744 codec->height = ost->filter->filter->inputs[0]->h;
1745 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
1746 ost->frame_aspect_ratio ? // overridden by the -aspect cli option
1747 av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
1748 ost->filter->filter->inputs[0]->sample_aspect_ratio;
1749 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
1750
1751 if (icodec &&
1752 (codec->width != icodec->width ||
1753 codec->height != icodec->height ||
1754 codec->pix_fmt != icodec->pix_fmt)) {
1755 codec->bits_per_raw_sample = 0;
1756 }
1757
1758 if (ost->forced_keyframes)
1759 parse_forced_key_frames(ost->forced_keyframes, ost,
1760 ost->st->codec);
1761 break;
1762 case AVMEDIA_TYPE_SUBTITLE:
1763 codec->time_base = (AVRational){1, 1000};
1764 break;
1765 default:
1766 abort();
1767 break;
1768 }
1769 /* two pass mode */
1770 if ((codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
1771 char logfilename[1024];
1772 FILE *f;
1773
1774 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
1775 ost->logfile_prefix ? ost->logfile_prefix :
1776 DEFAULT_PASS_LOGFILENAME_PREFIX,
1777 i);
1778 if (!strcmp(ost->enc->name, "libx264")) {
1779 av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
1780 } else {
1781 if (codec->flags & CODEC_FLAG_PASS1) {
1782 f = fopen(logfilename, "wb");
1783 if (!f) {
1784 av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
1785 logfilename, strerror(errno));
1786 exit_program(1);
1787 }
1788 ost->logfile = f;
1789 } else {
1790 char *logbuffer;
1791 size_t logbuffer_size;
1792 if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
1793 av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
1794 logfilename);
1795 exit_program(1);
1796 }
1797 codec->stats_in = logbuffer;
1798 }
1799 }
1800 }
1801 }
1802 }
1803
1804 /* open each encoder */
1805 for (i = 0; i < nb_output_streams; i++) {
1806 ost = output_streams[i];
1807 if (ost->encoding_needed) {
1808 AVCodec *codec = ost->enc;
1809 AVCodecContext *dec = NULL;
1810
1811 if ((ist = get_input_stream(ost)))
1812 dec = ist->st->codec;
1813 if (dec && dec->subtitle_header) {
1814 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
1815 if (!ost->st->codec->subtitle_header) {
1816 ret = AVERROR(ENOMEM);
1817 goto dump_format;
1818 }
1819 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
1820 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
1821 }
1822 if (!av_dict_get(ost->opts, "threads", NULL, 0))
1823 av_dict_set(&ost->opts, "threads", "auto", 0);
1824 if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
1825 if (ret == AVERROR_EXPERIMENTAL)
1826 abort_codec_experimental(codec, 1);
1827 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
1828 ost->file_index, ost->index);
1829 goto dump_format;
1830 }
1831 assert_avoptions(ost->opts);
1832 if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
1833 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
1834 "It takes bits/s as argument, not kbits/s\n");
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 }