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lavc decoders: properly initialize AVFrame.
[FFMpeg-mirror/mplayer-patches.git] / avconv.c
blob900f49afe7936253d52da1f71486a9ced6bdff48
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 "libavformat/avformat.h"
31 #include "libavdevice/avdevice.h"
32 #include "libswscale/swscale.h"
33 #include "libavresample/avresample.h"
34 #include "libavutil/opt.h"
35 #include "libavutil/channel_layout.h"
36 #include "libavutil/parseutils.h"
37 #include "libavutil/samplefmt.h"
38 #include "libavutil/colorspace.h"
39 #include "libavutil/fifo.h"
40 #include "libavutil/intreadwrite.h"
41 #include "libavutil/dict.h"
42 #include "libavutil/mathematics.h"
43 #include "libavutil/pixdesc.h"
44 #include "libavutil/avstring.h"
45 #include "libavutil/libm.h"
46 #include "libavutil/imgutils.h"
47 #include "libavutil/time.h"
48 #include "libavformat/os_support.h"
49
50 # include "libavfilter/avfilter.h"
51 # include "libavfilter/avfiltergraph.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 exit_program(void)
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]);
164 }
165 av_freep(&filtergraphs);
166
167 /* close files */
168 for (i = 0; i < nb_output_files; i++) {
169 AVFormatContext *s = output_files[i]->ctx;
170 if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
171 avio_close(s->pb);
172 avformat_free_context(s);
173 av_dict_free(&output_files[i]->opts);
174 av_freep(&output_files[i]);
175 }
176 for (i = 0; i < nb_output_streams; i++) {
177 AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
178 while (bsfc) {
179 AVBitStreamFilterContext *next = bsfc->next;
180 av_bitstream_filter_close(bsfc);
181 bsfc = next;
182 }
183 output_streams[i]->bitstream_filters = NULL;
184 avcodec_free_frame(&output_streams[i]->filtered_frame);
185
186 av_freep(&output_streams[i]->forced_keyframes);
187 av_freep(&output_streams[i]->avfilter);
188 av_freep(&output_streams[i]->logfile_prefix);
189 av_freep(&output_streams[i]);
190 }
191 for (i = 0; i < nb_input_files; i++) {
192 avformat_close_input(&input_files[i]->ctx);
193 av_freep(&input_files[i]);
194 }
195 for (i = 0; i < nb_input_streams; i++) {
196 avcodec_free_frame(&input_streams[i]->decoded_frame);
197 av_dict_free(&input_streams[i]->opts);
198 free_buffer_pool(&input_streams[i]->buffer_pool);
199 av_freep(&input_streams[i]->filters);
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 avfilter_uninit();
215 avformat_network_deinit();
216
217 if (received_sigterm) {
218 av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
219 (int) received_sigterm);
220 exit (255);
221 }
222 }
223
224 void assert_avoptions(AVDictionary *m)
225 {
226 AVDictionaryEntry *t;
227 if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
228 av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
229 exit(1);
230 }
231 }
232
233 static void abort_codec_experimental(AVCodec *c, int encoder)
234 {
235 const char *codec_string = encoder ? "encoder" : "decoder";
236 AVCodec *codec;
237 av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
238 "results.\nAdd '-strict experimental' if you want to use it.\n",
239 codec_string, c->name);
240 codec = encoder ? avcodec_find_encoder(c->id) : avcodec_find_decoder(c->id);
241 if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
242 av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
243 codec_string, codec->name);
244 exit(1);
245 }
246
247 /*
248 * Update the requested input sample format based on the output sample format.
249 * This is currently only used to request float output from decoders which
250 * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
251 * Ideally this will be removed in the future when decoders do not do format
252 * conversion and only output in their native format.
253 */
254 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
255 AVCodecContext *enc)
256 {
257 /* if sample formats match or a decoder sample format has already been
258 requested, just return */
259 if (enc->sample_fmt == dec->sample_fmt ||
260 dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
261 return;
262
263 /* if decoder supports more than one output format */
264 if (dec_codec && dec_codec->sample_fmts &&
265 dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
266 dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
267 const enum AVSampleFormat *p;
268 int min_dec = INT_MAX, min_inc = INT_MAX;
269 enum AVSampleFormat dec_fmt = AV_SAMPLE_FMT_NONE;
270 enum AVSampleFormat inc_fmt = AV_SAMPLE_FMT_NONE;
271
272 /* find a matching sample format in the encoder */
273 for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
274 if (*p == enc->sample_fmt) {
275 dec->request_sample_fmt = *p;
276 return;
277 } else {
278 enum AVSampleFormat dfmt = av_get_packed_sample_fmt(*p);
279 enum AVSampleFormat efmt = av_get_packed_sample_fmt(enc->sample_fmt);
280 int fmt_diff = 32 * abs(dfmt - efmt);
281 if (av_sample_fmt_is_planar(*p) !=
282 av_sample_fmt_is_planar(enc->sample_fmt))
283 fmt_diff++;
284 if (dfmt == efmt) {
285 min_inc = fmt_diff;
286 inc_fmt = *p;
287 } else if (dfmt > efmt) {
288 if (fmt_diff < min_inc) {
289 min_inc = fmt_diff;
290 inc_fmt = *p;
291 }
292 } else {
293 if (fmt_diff < min_dec) {
294 min_dec = fmt_diff;
295 dec_fmt = *p;
296 }
297 }
298 }
299 }
300
301 /* if none match, provide the one that matches quality closest */
302 dec->request_sample_fmt = min_inc != INT_MAX ? inc_fmt : dec_fmt;
303 }
304 }
305
306 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
307 {
308 AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
309 AVCodecContext *avctx = ost->st->codec;
310 int ret;
311
312 /*
313 * Audio encoders may split the packets -- #frames in != #packets out.
314 * But there is no reordering, so we can limit the number of output packets
315 * by simply dropping them here.
316 * Counting encoded video frames needs to be done separately because of
317 * reordering, see do_video_out()
318 */
319 if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
320 if (ost->frame_number >= ost->max_frames) {
321 av_free_packet(pkt);
322 return;
323 }
324 ost->frame_number++;
325 }
326
327 while (bsfc) {
328 AVPacket new_pkt = *pkt;
329 int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
330 &new_pkt.data, &new_pkt.size,
331 pkt->data, pkt->size,
332 pkt->flags & AV_PKT_FLAG_KEY);
333 if (a > 0) {
334 av_free_packet(pkt);
335 new_pkt.destruct = av_destruct_packet;
336 } else if (a < 0) {
337 av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
338 bsfc->filter->name, pkt->stream_index,
339 avctx->codec ? avctx->codec->name : "copy");
340 print_error("", a);
341 if (exit_on_error)
342 exit(1);
343 }
344 *pkt = new_pkt;
345
346 bsfc = bsfc->next;
347 }
348
349 pkt->stream_index = ost->index;
350 ret = av_interleaved_write_frame(s, pkt);
351 if (ret < 0) {
352 print_error("av_interleaved_write_frame()", ret);
353 exit(1);
354 }
355 }
356
357 static int check_recording_time(OutputStream *ost)
358 {
359 OutputFile *of = output_files[ost->file_index];
360
361 if (of->recording_time != INT64_MAX &&
362 av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
363 AV_TIME_BASE_Q) >= 0) {
364 ost->finished = 1;
365 return 0;
366 }
367 return 1;
368 }
369
370 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
371 AVFrame *frame)
372 {
373 AVCodecContext *enc = ost->st->codec;
374 AVPacket pkt;
375 int got_packet = 0;
376
377 av_init_packet(&pkt);
378 pkt.data = NULL;
379 pkt.size = 0;
380
381 if (!check_recording_time(ost))
382 return;
383
384 if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
385 frame->pts = ost->sync_opts;
386 ost->sync_opts = frame->pts + frame->nb_samples;
387
388 if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
389 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
390 exit(1);
391 }
392
393 if (got_packet) {
394 if (pkt.pts != AV_NOPTS_VALUE)
395 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
396 if (pkt.dts != AV_NOPTS_VALUE)
397 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
398 if (pkt.duration > 0)
399 pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
400
401 write_frame(s, &pkt, ost);
402
403 audio_size += pkt.size;
404 }
405 }
406
407 #if FF_API_DEINTERLACE
408 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
409 {
410 AVCodecContext *dec;
411 AVPicture *picture2;
412 AVPicture picture_tmp;
413 uint8_t *buf = 0;
414
415 dec = ist->st->codec;
416
417 /* deinterlace : must be done before any resize */
418 if (do_deinterlace) {
419 int size;
420
421 /* create temporary picture */
422 size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
423 buf = av_malloc(size);
424 if (!buf)
425 return;
426
427 picture2 = &picture_tmp;
428 avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
429
430 if (avpicture_deinterlace(picture2, picture,
431 dec->pix_fmt, dec->width, dec->height) < 0) {
432 /* if error, do not deinterlace */
433 av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
434 av_free(buf);
435 buf = NULL;
436 picture2 = picture;
437 }
438 } else {
439 picture2 = picture;
440 }
441
442 if (picture != picture2)
443 *picture = *picture2;
444 *bufp = buf;
445 }
446 #endif
447
448 static void do_subtitle_out(AVFormatContext *s,
449 OutputStream *ost,
450 InputStream *ist,
451 AVSubtitle *sub,
452 int64_t pts)
453 {
454 static uint8_t *subtitle_out = NULL;
455 int subtitle_out_max_size = 1024 * 1024;
456 int subtitle_out_size, nb, i;
457 AVCodecContext *enc;
458 AVPacket pkt;
459
460 if (pts == AV_NOPTS_VALUE) {
461 av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
462 if (exit_on_error)
463 exit(1);
464 return;
465 }
466
467 enc = ost->st->codec;
468
469 if (!subtitle_out) {
470 subtitle_out = av_malloc(subtitle_out_max_size);
471 }
472
473 /* Note: DVB subtitle need one packet to draw them and one other
474 packet to clear them */
475 /* XXX: signal it in the codec context ? */
476 if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
477 nb = 2;
478 else
479 nb = 1;
480
481 for (i = 0; i < nb; i++) {
482 ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
483 if (!check_recording_time(ost))
484 return;
485
486 sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
487 // start_display_time is required to be 0
488 sub->pts += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
489 sub->end_display_time -= sub->start_display_time;
490 sub->start_display_time = 0;
491 subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
492 subtitle_out_max_size, sub);
493 if (subtitle_out_size < 0) {
494 av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
495 exit(1);
496 }
497
498 av_init_packet(&pkt);
499 pkt.data = subtitle_out;
500 pkt.size = subtitle_out_size;
501 pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
502 if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
503 /* XXX: the pts correction is handled here. Maybe handling
504 it in the codec would be better */
505 if (i == 0)
506 pkt.pts += 90 * sub->start_display_time;
507 else
508 pkt.pts += 90 * sub->end_display_time;
509 }
510 write_frame(s, &pkt, ost);
511 }
512 }
513
514 static void do_video_out(AVFormatContext *s,
515 OutputStream *ost,
516 AVFrame *in_picture,
517 int *frame_size)
518 {
519 int ret, format_video_sync;
520 AVPacket pkt;
521 AVCodecContext *enc = ost->st->codec;
522
523 *frame_size = 0;
524
525 format_video_sync = video_sync_method;
526 if (format_video_sync == VSYNC_AUTO)
527 format_video_sync = (s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH :
528 (s->oformat->flags & AVFMT_VARIABLE_FPS) ? VSYNC_VFR : VSYNC_CFR;
529 if (format_video_sync != VSYNC_PASSTHROUGH &&
530 ost->frame_number &&
531 in_picture->pts != AV_NOPTS_VALUE &&
532 in_picture->pts < ost->sync_opts) {
533 nb_frames_drop++;
534 av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
535 return;
536 }
537
538 if (in_picture->pts == AV_NOPTS_VALUE)
539 in_picture->pts = ost->sync_opts;
540 ost->sync_opts = in_picture->pts;
541
542
543 if (!ost->frame_number)
544 ost->first_pts = in_picture->pts;
545
546 av_init_packet(&pkt);
547 pkt.data = NULL;
548 pkt.size = 0;
549
550 if (!check_recording_time(ost) ||
551 ost->frame_number >= ost->max_frames)
552 return;
553
554 if (s->oformat->flags & AVFMT_RAWPICTURE &&
555 enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
556 /* raw pictures are written as AVPicture structure to
557 avoid any copies. We support temporarily the older
558 method. */
559 enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
560 enc->coded_frame->top_field_first = in_picture->top_field_first;
561 pkt.data = (uint8_t *)in_picture;
562 pkt.size = sizeof(AVPicture);
563 pkt.pts = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
564 pkt.flags |= AV_PKT_FLAG_KEY;
565
566 write_frame(s, &pkt, ost);
567 } else {
568 int got_packet;
569 AVFrame big_picture;
570
571 big_picture = *in_picture;
572 /* better than nothing: use input picture interlaced
573 settings */
574 big_picture.interlaced_frame = in_picture->interlaced_frame;
575 if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
576 if (ost->top_field_first == -1)
577 big_picture.top_field_first = in_picture->top_field_first;
578 else
579 big_picture.top_field_first = !!ost->top_field_first;
580 }
581
582 big_picture.quality = ost->st->codec->global_quality;
583 if (!enc->me_threshold)
584 big_picture.pict_type = 0;
585 if (ost->forced_kf_index < ost->forced_kf_count &&
586 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
587 big_picture.pict_type = AV_PICTURE_TYPE_I;
588 ost->forced_kf_index++;
589 }
590 ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
591 if (ret < 0) {
592 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
593 exit(1);
594 }
595
596 if (got_packet) {
597 if (pkt.pts != AV_NOPTS_VALUE)
598 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
599 if (pkt.dts != AV_NOPTS_VALUE)
600 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
601
602 write_frame(s, &pkt, ost);
603 *frame_size = pkt.size;
604 video_size += pkt.size;
605
606 /* if two pass, output log */
607 if (ost->logfile && enc->stats_out) {
608 fprintf(ost->logfile, "%s", enc->stats_out);
609 }
610 }
611 }
612 ost->sync_opts++;
613 /*
614 * For video, number of frames in == number of packets out.
615 * But there may be reordering, so we can't throw away frames on encoder
616 * flush, we need to limit them here, before they go into encoder.
617 */
618 ost->frame_number++;
619 }
620
621 static double psnr(double d)
622 {
623 return -10.0 * log(d) / log(10.0);
624 }
625
626 static void do_video_stats(OutputStream *ost, int frame_size)
627 {
628 AVCodecContext *enc;
629 int frame_number;
630 double ti1, bitrate, avg_bitrate;
631
632 /* this is executed just the first time do_video_stats is called */
633 if (!vstats_file) {
634 vstats_file = fopen(vstats_filename, "w");
635 if (!vstats_file) {
636 perror("fopen");
637 exit(1);
638 }
639 }
640
641 enc = ost->st->codec;
642 if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
643 frame_number = ost->frame_number;
644 fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
645 if (enc->flags&CODEC_FLAG_PSNR)
646 fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
647
648 fprintf(vstats_file,"f_size= %6d ", frame_size);
649 /* compute pts value */
650 ti1 = ost->sync_opts * av_q2d(enc->time_base);
651 if (ti1 < 0.01)
652 ti1 = 0.01;
653
654 bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
655 avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
656 fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
657 (double)video_size / 1024, ti1, bitrate, avg_bitrate);
658 fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
659 }
660 }
661
662 /*
663 * Read one frame for lavfi output for ost and encode it.
664 */
665 static int poll_filter(OutputStream *ost)
666 {
667 OutputFile *of = output_files[ost->file_index];
668 AVFilterBufferRef *picref;
669 AVFrame *filtered_frame = NULL;
670 int frame_size, ret;
671
672 if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
673 return AVERROR(ENOMEM);
674 } else
675 avcodec_get_frame_defaults(ost->filtered_frame);
676 filtered_frame = ost->filtered_frame;
677
678 if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
679 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
680 ret = av_buffersink_read_samples(ost->filter->filter, &picref,
681 ost->st->codec->frame_size);
682 else
683 ret = av_buffersink_read(ost->filter->filter, &picref);
684
685 if (ret < 0)
686 return ret;
687
688 avfilter_copy_buf_props(filtered_frame, picref);
689 if (picref->pts != AV_NOPTS_VALUE) {
690 filtered_frame->pts = av_rescale_q(picref->pts,
691 ost->filter->filter->inputs[0]->time_base,
692 ost->st->codec->time_base) -
693 av_rescale_q(of->start_time,
694 AV_TIME_BASE_Q,
695 ost->st->codec->time_base);
696
697 if (of->start_time && filtered_frame->pts < 0) {
698 avfilter_unref_buffer(picref);
699 return 0;
700 }
701 }
702
703 switch (ost->filter->filter->inputs[0]->type) {
704 case AVMEDIA_TYPE_VIDEO:
705 if (!ost->frame_aspect_ratio)
706 ost->st->codec->sample_aspect_ratio = picref->video->pixel_aspect;
707
708 do_video_out(of->ctx, ost, filtered_frame, &frame_size);
709 if (vstats_filename && frame_size)
710 do_video_stats(ost, frame_size);
711 break;
712 case AVMEDIA_TYPE_AUDIO:
713 do_audio_out(of->ctx, ost, filtered_frame);
714 break;
715 default:
716 // TODO support subtitle filters
717 av_assert0(0);
718 }
719
720 avfilter_unref_buffer(picref);
721
722 return 0;
723 }
724
725 /*
726 * Read as many frames from possible from lavfi and encode them.
727 *
728 * Always read from the active stream with the lowest timestamp. If no frames
729 * are available for it then return EAGAIN and wait for more input. This way we
730 * can use lavfi sources that generate unlimited amount of frames without memory
731 * usage exploding.
732 */
733 static int poll_filters(void)
734 {
735 int i, j, ret = 0;
736
737 while (ret >= 0 && !received_sigterm) {
738 OutputStream *ost = NULL;
739 int64_t min_pts = INT64_MAX;
740
741 /* choose output stream with the lowest timestamp */
742 for (i = 0; i < nb_output_streams; i++) {
743 int64_t pts = output_streams[i]->sync_opts;
744
745 if (!output_streams[i]->filter || output_streams[i]->finished)
746 continue;
747
748 pts = av_rescale_q(pts, output_streams[i]->st->codec->time_base,
749 AV_TIME_BASE_Q);
750 if (pts < min_pts) {
751 min_pts = pts;
752 ost = output_streams[i];
753 }
754 }
755
756 if (!ost)
757 break;
758
759 ret = poll_filter(ost);
760
761 if (ret == AVERROR_EOF) {
762 OutputFile *of = output_files[ost->file_index];
763
764 ost->finished = 1;
765
766 if (of->shortest) {
767 for (j = 0; j < of->ctx->nb_streams; j++)
768 output_streams[of->ost_index + j]->finished = 1;
769 }
770
771 ret = 0;
772 } else if (ret == AVERROR(EAGAIN))
773 return 0;
774 }
775
776 return ret;
777 }
778
779 static void print_report(int is_last_report, int64_t timer_start)
780 {
781 char buf[1024];
782 OutputStream *ost;
783 AVFormatContext *oc;
784 int64_t total_size;
785 AVCodecContext *enc;
786 int frame_number, vid, i;
787 double bitrate, ti1, pts;
788 static int64_t last_time = -1;
789 static int qp_histogram[52];
790
791 if (!print_stats && !is_last_report)
792 return;
793
794 if (!is_last_report) {
795 int64_t cur_time;
796 /* display the report every 0.5 seconds */
797 cur_time = av_gettime();
798 if (last_time == -1) {
799 last_time = cur_time;
800 return;
801 }
802 if ((cur_time - last_time) < 500000)
803 return;
804 last_time = cur_time;
805 }
806
807
808 oc = output_files[0]->ctx;
809
810 total_size = avio_size(oc->pb);
811 if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
812 total_size = avio_tell(oc->pb);
813 if (total_size < 0) {
814 char errbuf[128];
815 av_strerror(total_size, errbuf, sizeof(errbuf));
816 av_log(NULL, AV_LOG_VERBOSE, "Bitrate not available, "
817 "avio_tell() failed: %s\n", errbuf);
818 total_size = 0;
819 }
820
821 buf[0] = '\0';
822 ti1 = 1e10;
823 vid = 0;
824 for (i = 0; i < nb_output_streams; i++) {
825 float q = -1;
826 ost = output_streams[i];
827 enc = ost->st->codec;
828 if (!ost->stream_copy && enc->coded_frame)
829 q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
830 if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
831 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
832 }
833 if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
834 float t = (av_gettime() - timer_start) / 1000000.0;
835
836 frame_number = ost->frame_number;
837 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
838 frame_number, (t > 1) ? (int)(frame_number / t + 0.5) : 0, q);
839 if (is_last_report)
840 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
841 if (qp_hist) {
842 int j;
843 int qp = lrintf(q);
844 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
845 qp_histogram[qp]++;
846 for (j = 0; j < 32; j++)
847 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
848 }
849 if (enc->flags&CODEC_FLAG_PSNR) {
850 int j;
851 double error, error_sum = 0;
852 double scale, scale_sum = 0;
853 char type[3] = { 'Y','U','V' };
854 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
855 for (j = 0; j < 3; j++) {
856 if (is_last_report) {
857 error = enc->error[j];
858 scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
859 } else {
860 error = enc->coded_frame->error[j];
861 scale = enc->width * enc->height * 255.0 * 255.0;
862 }
863 if (j)
864 scale /= 4;
865 error_sum += error;
866 scale_sum += scale;
867 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
868 }
869 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
870 }
871 vid = 1;
872 }
873 /* compute min output value */
874 pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
875 if ((pts < ti1) && (pts > 0))
876 ti1 = pts;
877 }
878 if (ti1 < 0.01)
879 ti1 = 0.01;
880
881 bitrate = (double)(total_size * 8) / ti1 / 1000.0;
882
883 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
884 "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
885 (double)total_size / 1024, ti1, bitrate);
886
887 if (nb_frames_dup || nb_frames_drop)
888 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
889 nb_frames_dup, nb_frames_drop);
890
891 av_log(NULL, AV_LOG_INFO, "%s \r", buf);
892
893 fflush(stderr);
894
895 if (is_last_report) {
896 int64_t raw= audio_size + video_size + extra_size;
897 av_log(NULL, AV_LOG_INFO, "\n");
898 av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
899 video_size / 1024.0,
900 audio_size / 1024.0,
901 extra_size / 1024.0,
902 100.0 * (total_size - raw) / raw
903 );
904 }
905 }
906
907 static void flush_encoders(void)
908 {
909 int i, ret;
910
911 for (i = 0; i < nb_output_streams; i++) {
912 OutputStream *ost = output_streams[i];
913 AVCodecContext *enc = ost->st->codec;
914 AVFormatContext *os = output_files[ost->file_index]->ctx;
915 int stop_encoding = 0;
916
917 if (!ost->encoding_needed)
918 continue;
919
920 if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
921 continue;
922 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
923 continue;
924
925 for (;;) {
926 int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
927 const char *desc;
928 int64_t *size;
929
930 switch (ost->st->codec->codec_type) {
931 case AVMEDIA_TYPE_AUDIO:
932 encode = avcodec_encode_audio2;
933 desc = "Audio";
934 size = &audio_size;
935 break;
936 case AVMEDIA_TYPE_VIDEO:
937 encode = avcodec_encode_video2;
938 desc = "Video";
939 size = &video_size;
940 break;
941 default:
942 stop_encoding = 1;
943 }
944
945 if (encode) {
946 AVPacket pkt;
947 int got_packet;
948 av_init_packet(&pkt);
949 pkt.data = NULL;
950 pkt.size = 0;
951
952 ret = encode(enc, &pkt, NULL, &got_packet);
953 if (ret < 0) {
954 av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
955 exit(1);
956 }
957 *size += ret;
958 if (ost->logfile && enc->stats_out) {
959 fprintf(ost->logfile, "%s", enc->stats_out);
960 }
961 if (!got_packet) {
962 stop_encoding = 1;
963 break;
964 }
965 if (pkt.pts != AV_NOPTS_VALUE)
966 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
967 if (pkt.dts != AV_NOPTS_VALUE)
968 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
969 if (pkt.duration > 0)
970 pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
971 write_frame(os, &pkt, ost);
972 }
973
974 if (stop_encoding)
975 break;
976 }
977 }
978 }
979
980 /*
981 * Check whether a packet from ist should be written into ost at this time
982 */
983 static int check_output_constraints(InputStream *ist, OutputStream *ost)
984 {
985 OutputFile *of = output_files[ost->file_index];
986 int ist_index = input_files[ist->file_index]->ist_index + ist->st->index;
987
988 if (ost->source_index != ist_index)
989 return 0;
990
991 if (of->start_time && ist->last_dts < of->start_time)
992 return 0;
993
994 return 1;
995 }
996
997 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
998 {
999 OutputFile *of = output_files[ost->file_index];
1000 int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1001 AVPacket opkt;
1002
1003 av_init_packet(&opkt);
1004
1005 if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1006 !ost->copy_initial_nonkeyframes)
1007 return;
1008
1009 if (of->recording_time != INT64_MAX &&
1010 ist->last_dts >= of->recording_time + of->start_time) {
1011 ost->finished = 1;
1012 return;
1013 }
1014
1015 /* force the input stream PTS */
1016 if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1017 audio_size += pkt->size;
1018 else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1019 video_size += pkt->size;
1020 ost->sync_opts++;
1021 }
1022
1023 if (pkt->pts != AV_NOPTS_VALUE)
1024 opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1025 else
1026 opkt.pts = AV_NOPTS_VALUE;
1027
1028 if (pkt->dts == AV_NOPTS_VALUE)
1029 opkt.dts = av_rescale_q(ist->last_dts, AV_TIME_BASE_Q, ost->st->time_base);
1030 else
1031 opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1032 opkt.dts -= ost_tb_start_time;
1033
1034 opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1035 opkt.flags = pkt->flags;
1036
1037 // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1038 if ( ost->st->codec->codec_id != AV_CODEC_ID_H264
1039 && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1040 && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1041 && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1042 ) {
1043 if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1044 opkt.destruct = av_destruct_packet;
1045 } else {
1046 opkt.data = pkt->data;
1047 opkt.size = pkt->size;
1048 }
1049
1050 write_frame(of->ctx, &opkt, ost);
1051 ost->st->codec->frame_number++;
1052 }
1053
1054 static void rate_emu_sleep(InputStream *ist)
1055 {
1056 if (input_files[ist->file_index]->rate_emu) {
1057 int64_t pts = av_rescale(ist->last_dts, 1000000, AV_TIME_BASE);
1058 int64_t now = av_gettime() - ist->start;
1059 if (pts > now)
1060 av_usleep(pts - now);
1061 }
1062 }
1063
1064 int guess_input_channel_layout(InputStream *ist)
1065 {
1066 AVCodecContext *dec = ist->st->codec;
1067
1068 if (!dec->channel_layout) {
1069 char layout_name[256];
1070
1071 dec->channel_layout = av_get_default_channel_layout(dec->channels);
1072 if (!dec->channel_layout)
1073 return 0;
1074 av_get_channel_layout_string(layout_name, sizeof(layout_name),
1075 dec->channels, dec->channel_layout);
1076 av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for Input Stream "
1077 "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1078 }
1079 return 1;
1080 }
1081
1082 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1083 {
1084 AVFrame *decoded_frame;
1085 AVCodecContext *avctx = ist->st->codec;
1086 int i, ret, resample_changed;
1087
1088 if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1089 return AVERROR(ENOMEM);
1090 decoded_frame = ist->decoded_frame;
1091
1092 ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1093 if (!*got_output || ret < 0) {
1094 if (!pkt->size) {
1095 for (i = 0; i < ist->nb_filters; i++)
1096 av_buffersrc_buffer(ist->filters[i]->filter, NULL);
1097 }
1098 return ret;
1099 }
1100
1101 /* if the decoder provides a pts, use it instead of the last packet pts.
1102 the decoder could be delaying output by a packet or more. */
1103 if (decoded_frame->pts != AV_NOPTS_VALUE)
1104 ist->next_dts = decoded_frame->pts;
1105 else if (pkt->pts != AV_NOPTS_VALUE) {
1106 decoded_frame->pts = pkt->pts;
1107 pkt->pts = AV_NOPTS_VALUE;
1108 }
1109
1110 rate_emu_sleep(ist);
1111
1112 resample_changed = ist->resample_sample_fmt != decoded_frame->format ||
1113 ist->resample_channels != avctx->channels ||
1114 ist->resample_channel_layout != decoded_frame->channel_layout ||
1115 ist->resample_sample_rate != decoded_frame->sample_rate;
1116 if (resample_changed) {
1117 char layout1[64], layout2[64];
1118
1119 if (!guess_input_channel_layout(ist)) {
1120 av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1121 "layout for Input Stream #%d.%d\n", ist->file_index,
1122 ist->st->index);
1123 exit(1);
1124 }
1125 decoded_frame->channel_layout = avctx->channel_layout;
1126
1127 av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1128 ist->resample_channel_layout);
1129 av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1130 decoded_frame->channel_layout);
1131
1132 av_log(NULL, AV_LOG_INFO,
1133 "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",
1134 ist->file_index, ist->st->index,
1135 ist->resample_sample_rate, av_get_sample_fmt_name(ist->resample_sample_fmt),
1136 ist->resample_channels, layout1,
1137 decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1138 avctx->channels, layout2);
1139
1140 ist->resample_sample_fmt = decoded_frame->format;
1141 ist->resample_sample_rate = decoded_frame->sample_rate;
1142 ist->resample_channel_layout = decoded_frame->channel_layout;
1143 ist->resample_channels = avctx->channels;
1144
1145 for (i = 0; i < nb_filtergraphs; i++)
1146 if (ist_in_filtergraph(filtergraphs[i], ist) &&
1147 configure_filtergraph(filtergraphs[i]) < 0) {
1148 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1149 exit(1);
1150 }
1151 }
1152
1153 if (decoded_frame->pts != AV_NOPTS_VALUE)
1154 decoded_frame->pts = av_rescale_q(decoded_frame->pts,
1155 ist->st->time_base,
1156 (AVRational){1, ist->st->codec->sample_rate});
1157 for (i = 0; i < ist->nb_filters; i++)
1158 av_buffersrc_write_frame(ist->filters[i]->filter, decoded_frame);
1159
1160 return ret;
1161 }
1162
1163 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1164 {
1165 AVFrame *decoded_frame;
1166 void *buffer_to_free = NULL;
1167 int i, ret = 0, resample_changed;
1168
1169 if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1170 return AVERROR(ENOMEM);
1171 decoded_frame = ist->decoded_frame;
1172
1173 ret = avcodec_decode_video2(ist->st->codec,
1174 decoded_frame, got_output, pkt);
1175 if (!*got_output || ret < 0) {
1176 if (!pkt->size) {
1177 for (i = 0; i < ist->nb_filters; i++)
1178 av_buffersrc_buffer(ist->filters[i]->filter, NULL);
1179 }
1180 return ret;
1181 }
1182
1183 decoded_frame->pts = guess_correct_pts(&ist->pts_ctx, decoded_frame->pkt_pts,
1184 decoded_frame->pkt_dts);
1185 pkt->size = 0;
1186 #if FF_API_DEINTERLACE
1187 pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1188 #endif
1189
1190 rate_emu_sleep(ist);
1191
1192 if (ist->st->sample_aspect_ratio.num)
1193 decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1194
1195 resample_changed = ist->resample_width != decoded_frame->width ||
1196 ist->resample_height != decoded_frame->height ||
1197 ist->resample_pix_fmt != decoded_frame->format;
1198 if (resample_changed) {
1199 av_log(NULL, AV_LOG_INFO,
1200 "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1201 ist->file_index, ist->st->index,
1202 ist->resample_width, ist->resample_height, av_get_pix_fmt_name(ist->resample_pix_fmt),
1203 decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1204
1205 ret = poll_filters();
1206 if (ret < 0 && (ret != AVERROR_EOF && ret != AVERROR(EAGAIN)))
1207 av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
1208
1209 ist->resample_width = decoded_frame->width;
1210 ist->resample_height = decoded_frame->height;
1211 ist->resample_pix_fmt = decoded_frame->format;
1212
1213 for (i = 0; i < nb_filtergraphs; i++)
1214 if (ist_in_filtergraph(filtergraphs[i], ist) &&
1215 configure_filtergraph(filtergraphs[i]) < 0) {
1216 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1217 exit(1);
1218 }
1219 }
1220
1221 for (i = 0; i < ist->nb_filters; i++) {
1222 if (ist->st->codec->codec->capabilities & CODEC_CAP_DR1) {
1223 FrameBuffer *buf = decoded_frame->opaque;
1224 AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1225 decoded_frame->data, decoded_frame->linesize,
1226 AV_PERM_READ | AV_PERM_PRESERVE,
1227 ist->st->codec->width, ist->st->codec->height,
1228 ist->st->codec->pix_fmt);
1229
1230 avfilter_copy_frame_props(fb, decoded_frame);
1231 fb->buf->priv = buf;
1232 fb->buf->free = filter_release_buffer;
1233
1234 buf->refcount++;
1235 av_buffersrc_buffer(ist->filters[i]->filter, fb);
1236 } else
1237 av_buffersrc_write_frame(ist->filters[i]->filter, decoded_frame);
1238 }
1239
1240 av_free(buffer_to_free);
1241 return ret;
1242 }
1243
1244 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1245 {
1246 AVSubtitle subtitle;
1247 int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1248 &subtitle, got_output, pkt);
1249 if (ret < 0)
1250 return ret;
1251 if (!*got_output)
1252 return ret;
1253
1254 rate_emu_sleep(ist);
1255
1256 for (i = 0; i < nb_output_streams; i++) {
1257 OutputStream *ost = output_streams[i];
1258
1259 if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1260 continue;
1261
1262 do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pkt->pts);
1263 }
1264
1265 avsubtitle_free(&subtitle);
1266 return ret;
1267 }
1268
1269 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1270 static int output_packet(InputStream *ist, const AVPacket *pkt)
1271 {
1272 int i;
1273 int got_output;
1274 AVPacket avpkt;
1275
1276 if (ist->next_dts == AV_NOPTS_VALUE)
1277 ist->next_dts = ist->last_dts;
1278
1279 if (pkt == NULL) {
1280 /* EOF handling */
1281 av_init_packet(&avpkt);
1282 avpkt.data = NULL;
1283 avpkt.size = 0;
1284 goto handle_eof;
1285 } else {
1286 avpkt = *pkt;
1287 }
1288
1289 if (pkt->dts != AV_NOPTS_VALUE)
1290 ist->next_dts = ist->last_dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1291
1292 // while we have more to decode or while the decoder did output something on EOF
1293 while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1294 int ret = 0;
1295 handle_eof:
1296
1297 ist->last_dts = ist->next_dts;
1298
1299 if (avpkt.size && avpkt.size != pkt->size) {
1300 av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1301 "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1302 ist->showed_multi_packet_warning = 1;
1303 }
1304
1305 switch (ist->st->codec->codec_type) {
1306 case AVMEDIA_TYPE_AUDIO:
1307 ret = decode_audio (ist, &avpkt, &got_output);
1308 break;
1309 case AVMEDIA_TYPE_VIDEO:
1310 ret = decode_video (ist, &avpkt, &got_output);
1311 if (avpkt.duration)
1312 ist->next_dts += av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1313 else if (ist->st->avg_frame_rate.num)
1314 ist->next_dts += av_rescale_q(1, av_inv_q(ist->st->avg_frame_rate),
1315 AV_TIME_BASE_Q);
1316 else if (ist->st->codec->time_base.num != 0) {
1317 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 :
1318 ist->st->codec->ticks_per_frame;
1319 ist->next_dts += av_rescale_q(ticks, ist->st->codec->time_base, AV_TIME_BASE_Q);
1320 }
1321 break;
1322 case AVMEDIA_TYPE_SUBTITLE:
1323 ret = transcode_subtitles(ist, &avpkt, &got_output);
1324 break;
1325 default:
1326 return -1;
1327 }
1328
1329 if (ret < 0)
1330 return ret;
1331 // touch data and size only if not EOF
1332 if (pkt) {
1333 avpkt.data += ret;
1334 avpkt.size -= ret;
1335 }
1336 if (!got_output) {
1337 continue;
1338 }
1339 }
1340
1341 /* handle stream copy */
1342 if (!ist->decoding_needed) {
1343 rate_emu_sleep(ist);
1344 ist->last_dts = ist->next_dts;
1345 switch (ist->st->codec->codec_type) {
1346 case AVMEDIA_TYPE_AUDIO:
1347 ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1348 ist->st->codec->sample_rate;
1349 break;
1350 case AVMEDIA_TYPE_VIDEO:
1351 if (ist->st->codec->time_base.num != 0) {
1352 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1353 ist->next_dts += ((int64_t)AV_TIME_BASE *
1354 ist->st->codec->time_base.num * ticks) /
1355 ist->st->codec->time_base.den;
1356 }
1357 break;
1358 }
1359 }
1360 for (i = 0; pkt && i < nb_output_streams; i++) {
1361 OutputStream *ost = output_streams[i];
1362
1363 if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1364 continue;
1365
1366 do_streamcopy(ist, ost, pkt);
1367 }
1368
1369 return 0;
1370 }
1371
1372 static void print_sdp(void)
1373 {
1374 char sdp[16384];
1375 int i;
1376 AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1377
1378 if (!avc)
1379 exit(1);
1380 for (i = 0; i < nb_output_files; i++)
1381 avc[i] = output_files[i]->ctx;
1382
1383 av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1384 printf("SDP:\n%s\n", sdp);
1385 fflush(stdout);
1386 av_freep(&avc);
1387 }
1388
1389 static int init_input_stream(int ist_index, char *error, int error_len)
1390 {
1391 int i, ret;
1392 InputStream *ist = input_streams[ist_index];
1393 if (ist->decoding_needed) {
1394 AVCodec *codec = ist->dec;
1395 if (!codec) {
1396 snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d:%d",
1397 ist->st->codec->codec_id, ist->file_index, ist->st->index);
1398 return AVERROR(EINVAL);
1399 }
1400
1401 /* update requested sample format for the decoder based on the
1402 corresponding encoder sample format */
1403 for (i = 0; i < nb_output_streams; i++) {
1404 OutputStream *ost = output_streams[i];
1405 if (ost->source_index == ist_index) {
1406 update_sample_fmt(ist->st->codec, codec, ost->st->codec);
1407 break;
1408 }
1409 }
1410
1411 if (codec->type == AVMEDIA_TYPE_VIDEO && codec->capabilities & CODEC_CAP_DR1) {
1412 ist->st->codec->get_buffer = codec_get_buffer;
1413 ist->st->codec->release_buffer = codec_release_buffer;
1414 ist->st->codec->opaque = &ist->buffer_pool;
1415 }
1416
1417 if (!av_dict_get(ist->opts, "threads", NULL, 0))
1418 av_dict_set(&ist->opts, "threads", "auto", 0);
1419 if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
1420 if (ret == AVERROR_EXPERIMENTAL)
1421 abort_codec_experimental(codec, 0);
1422 snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1423 ist->file_index, ist->st->index);
1424 return ret;
1425 }
1426 assert_avoptions(ist->opts);
1427 }
1428
1429 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;
1430 ist->next_dts = AV_NOPTS_VALUE;
1431 init_pts_correction(&ist->pts_ctx);
1432 ist->is_start = 1;
1433
1434 return 0;
1435 }
1436
1437 static InputStream *get_input_stream(OutputStream *ost)
1438 {
1439 if (ost->source_index >= 0)
1440 return input_streams[ost->source_index];
1441
1442 if (ost->filter) {
1443 FilterGraph *fg = ost->filter->graph;
1444 int i;
1445
1446 for (i = 0; i < fg->nb_inputs; i++)
1447 if (fg->inputs[i]->ist->st->codec->codec_type == ost->st->codec->codec_type)
1448 return fg->inputs[i]->ist;
1449 }
1450
1451 return NULL;
1452 }
1453
1454 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1455 AVCodecContext *avctx)
1456 {
1457 char *p;
1458 int n = 1, i;
1459 int64_t t;
1460
1461 for (p = kf; *p; p++)
1462 if (*p == ',')
1463 n++;
1464 ost->forced_kf_count = n;
1465 ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1466 if (!ost->forced_kf_pts) {
1467 av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1468 exit(1);
1469 }
1470
1471 p = kf;
1472 for (i = 0; i < n; i++) {
1473 char *next = strchr(p, ',');
1474
1475 if (next)
1476 *next++ = 0;
1477
1478 t = parse_time_or_die("force_key_frames", p, 1);
1479 ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1480
1481 p = next;
1482 }
1483 }
1484
1485 static int transcode_init(void)
1486 {
1487 int ret = 0, i, j, k;
1488 AVFormatContext *oc;
1489 AVCodecContext *codec;
1490 OutputStream *ost;
1491 InputStream *ist;
1492 char error[1024];
1493 int want_sdp = 1;
1494
1495 /* init framerate emulation */
1496 for (i = 0; i < nb_input_files; i++) {
1497 InputFile *ifile = input_files[i];
1498 if (ifile->rate_emu)
1499 for (j = 0; j < ifile->nb_streams; j++)
1500 input_streams[j + ifile->ist_index]->start = av_gettime();
1501 }
1502
1503 /* output stream init */
1504 for (i = 0; i < nb_output_files; i++) {
1505 oc = output_files[i]->ctx;
1506 if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
1507 av_dump_format(oc, i, oc->filename, 1);
1508 av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
1509 return AVERROR(EINVAL);
1510 }
1511 }
1512
1513 /* init complex filtergraphs */
1514 for (i = 0; i < nb_filtergraphs; i++)
1515 if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
1516 return ret;
1517
1518 /* for each output stream, we compute the right encoding parameters */
1519 for (i = 0; i < nb_output_streams; i++) {
1520 AVCodecContext *icodec = NULL;
1521 ost = output_streams[i];
1522 oc = output_files[ost->file_index]->ctx;
1523 ist = get_input_stream(ost);
1524
1525 if (ost->attachment_filename)
1526 continue;
1527
1528 codec = ost->st->codec;
1529
1530 if (ist) {
1531 icodec = ist->st->codec;
1532
1533 ost->st->disposition = ist->st->disposition;
1534 codec->bits_per_raw_sample = icodec->bits_per_raw_sample;
1535 codec->chroma_sample_location = icodec->chroma_sample_location;
1536 }
1537
1538 if (ost->stream_copy) {
1539 uint64_t extra_size;
1540
1541 av_assert0(ist && !ost->filter);
1542
1543 extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
1544
1545 if (extra_size > INT_MAX) {
1546 return AVERROR(EINVAL);
1547 }
1548
1549 /* if stream_copy is selected, no need to decode or encode */
1550 codec->codec_id = icodec->codec_id;
1551 codec->codec_type = icodec->codec_type;
1552
1553 if (!codec->codec_tag) {
1554 if (!oc->oformat->codec_tag ||
1555 av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
1556 av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
1557 codec->codec_tag = icodec->codec_tag;
1558 }
1559
1560 codec->bit_rate = icodec->bit_rate;
1561 codec->rc_max_rate = icodec->rc_max_rate;
1562 codec->rc_buffer_size = icodec->rc_buffer_size;
1563 codec->field_order = icodec->field_order;
1564 codec->extradata = av_mallocz(extra_size);
1565 if (!codec->extradata) {
1566 return AVERROR(ENOMEM);
1567 }
1568 memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
1569 codec->extradata_size = icodec->extradata_size;
1570 if (!copy_tb) {
1571 codec->time_base = icodec->time_base;
1572 codec->time_base.num *= icodec->ticks_per_frame;
1573 av_reduce(&codec->time_base.num, &codec->time_base.den,
1574 codec->time_base.num, codec->time_base.den, INT_MAX);
1575 } else
1576 codec->time_base = ist->st->time_base;
1577
1578 switch (codec->codec_type) {
1579 case AVMEDIA_TYPE_AUDIO:
1580 if (audio_volume != 256) {
1581 av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
1582 exit(1);
1583 }
1584 codec->channel_layout = icodec->channel_layout;
1585 codec->sample_rate = icodec->sample_rate;
1586 codec->channels = icodec->channels;
1587 codec->frame_size = icodec->frame_size;
1588 codec->audio_service_type = icodec->audio_service_type;
1589 codec->block_align = icodec->block_align;
1590 break;
1591 case AVMEDIA_TYPE_VIDEO:
1592 codec->pix_fmt = icodec->pix_fmt;
1593 codec->width = icodec->width;
1594 codec->height = icodec->height;
1595 codec->has_b_frames = icodec->has_b_frames;
1596 if (!codec->sample_aspect_ratio.num) {
1597 codec->sample_aspect_ratio =
1598 ost->st->sample_aspect_ratio =
1599 ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
1600 ist->st->codec->sample_aspect_ratio.num ?
1601 ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
1602 }
1603 break;
1604 case AVMEDIA_TYPE_SUBTITLE:
1605 codec->width = icodec->width;
1606 codec->height = icodec->height;
1607 break;
1608 case AVMEDIA_TYPE_DATA:
1609 case AVMEDIA_TYPE_ATTACHMENT:
1610 break;
1611 default:
1612 abort();
1613 }
1614 } else {
1615 if (!ost->enc) {
1616 /* should only happen when a default codec is not present. */
1617 snprintf(error, sizeof(error), "Automatic encoder selection "
1618 "failed for output stream #%d:%d. Default encoder for "
1619 "format %s is probably disabled. Please choose an "
1620 "encoder manually.\n", ost->file_index, ost->index,
1621 oc->oformat->name);
1622 ret = AVERROR(EINVAL);
1623 goto dump_format;
1624 }
1625
1626 if (ist)
1627 ist->decoding_needed = 1;
1628 ost->encoding_needed = 1;
1629
1630 /*
1631 * We want CFR output if and only if one of those is true:
1632 * 1) user specified output framerate with -r
1633 * 2) user specified -vsync cfr
1634 * 3) output format is CFR and the user didn't force vsync to
1635 * something else than CFR
1636 *
1637 * in such a case, set ost->frame_rate
1638 */
1639 if (codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1640 !ost->frame_rate.num && ist &&
1641 (video_sync_method == VSYNC_CFR ||
1642 (video_sync_method == VSYNC_AUTO &&
1643 !(oc->oformat->flags & (AVFMT_NOTIMESTAMPS | AVFMT_VARIABLE_FPS))))) {
1644 ost->frame_rate = ist->framerate.num ? ist->framerate :
1645 ist->st->avg_frame_rate.num ?
1646 ist->st->avg_frame_rate :
1647 (AVRational){25, 1};
1648
1649 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
1650 int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
1651 ost->frame_rate = ost->enc->supported_framerates[idx];
1652 }
1653 }
1654
1655 if (!ost->filter &&
1656 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
1657 codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
1658 FilterGraph *fg;
1659 fg = init_simple_filtergraph(ist, ost);
1660 if (configure_filtergraph(fg)) {
1661 av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
1662 exit(1);
1663 }
1664 }
1665
1666 switch (codec->codec_type) {
1667 case AVMEDIA_TYPE_AUDIO:
1668 codec->sample_fmt = ost->filter->filter->inputs[0]->format;
1669 codec->sample_rate = ost->filter->filter->inputs[0]->sample_rate;
1670 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
1671 codec->channels = av_get_channel_layout_nb_channels(codec->channel_layout);
1672 codec->time_base = (AVRational){ 1, codec->sample_rate };
1673 break;
1674 case AVMEDIA_TYPE_VIDEO:
1675 codec->time_base = ost->filter->filter->inputs[0]->time_base;
1676
1677 codec->width = ost->filter->filter->inputs[0]->w;
1678 codec->height = ost->filter->filter->inputs[0]->h;
1679 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
1680 ost->frame_aspect_ratio ? // overridden by the -aspect cli option
1681 av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
1682 ost->filter->filter->inputs[0]->sample_aspect_ratio;
1683 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
1684
1685 if (icodec &&
1686 (codec->width != icodec->width ||
1687 codec->height != icodec->height ||
1688 codec->pix_fmt != icodec->pix_fmt)) {
1689 codec->bits_per_raw_sample = 0;
1690 }
1691
1692 if (ost->forced_keyframes)
1693 parse_forced_key_frames(ost->forced_keyframes, ost,
1694 ost->st->codec);
1695 break;
1696 case AVMEDIA_TYPE_SUBTITLE:
1697 codec->time_base = (AVRational){1, 1000};
1698 break;
1699 default:
1700 abort();
1701 break;
1702 }
1703 /* two pass mode */
1704 if ((codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
1705 char logfilename[1024];
1706 FILE *f;
1707
1708 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
1709 ost->logfile_prefix ? ost->logfile_prefix :
1710 DEFAULT_PASS_LOGFILENAME_PREFIX,
1711 i);
1712 if (!strcmp(ost->enc->name, "libx264")) {
1713 av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
1714 } else {
1715 if (codec->flags & CODEC_FLAG_PASS1) {
1716 f = fopen(logfilename, "wb");
1717 if (!f) {
1718 av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
1719 logfilename, strerror(errno));
1720 exit(1);
1721 }
1722 ost->logfile = f;
1723 } else {
1724 char *logbuffer;
1725 size_t logbuffer_size;
1726 if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
1727 av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
1728 logfilename);
1729 exit(1);
1730 }
1731 codec->stats_in = logbuffer;
1732 }
1733 }
1734 }
1735 }
1736 }
1737
1738 /* open each encoder */
1739 for (i = 0; i < nb_output_streams; i++) {
1740 ost = output_streams[i];
1741 if (ost->encoding_needed) {
1742 AVCodec *codec = ost->enc;
1743 AVCodecContext *dec = NULL;
1744
1745 if ((ist = get_input_stream(ost)))
1746 dec = ist->st->codec;
1747 if (dec && dec->subtitle_header) {
1748 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
1749 if (!ost->st->codec->subtitle_header) {
1750 ret = AVERROR(ENOMEM);
1751 goto dump_format;
1752 }
1753 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
1754 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
1755 }
1756 if (!av_dict_get(ost->opts, "threads", NULL, 0))
1757 av_dict_set(&ost->opts, "threads", "auto", 0);
1758 if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
1759 if (ret == AVERROR_EXPERIMENTAL)
1760 abort_codec_experimental(codec, 1);
1761 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
1762 ost->file_index, ost->index);
1763 goto dump_format;
1764 }
1765 assert_avoptions(ost->opts);
1766 if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
1767 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
1768 "It takes bits/s as argument, not kbits/s\n");
1769 extra_size += ost->st->codec->extradata_size;
1770
1771 if (ost->st->codec->me_threshold)
1772 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
1773 } else {
1774 av_opt_set_dict(ost->st->codec, &ost->opts);
1775 }
1776 }
1777
1778 /* init input streams */
1779 for (i = 0; i < nb_input_streams; i++)
1780 if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
1781 goto dump_format;
1782
1783 /* discard unused programs */
1784 for (i = 0; i < nb_input_files; i++) {
1785 InputFile *ifile = input_files[i];
1786 for (j = 0; j < ifile->ctx->nb_programs; j++) {
1787 AVProgram *p = ifile->ctx->programs[j];
1788 int discard = AVDISCARD_ALL;
1789
1790 for (k = 0; k < p->nb_stream_indexes; k++)
1791 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
1792 discard = AVDISCARD_DEFAULT;
1793 break;
1794 }
1795 p->discard = discard;
1796 }
1797 }
1798
1799 /* open files and write file headers */
1800 for (i = 0; i < nb_output_files; i++) {
1801 oc = output_files[i]->ctx;
1802 oc->interrupt_callback = int_cb;
1803 if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
1804 char errbuf[128];
1805 const char *errbuf_ptr = errbuf;
1806 if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
1807 errbuf_ptr = strerror(AVUNERROR(ret));
1808 snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
1809 ret = AVERROR(EINVAL);
1810 goto dump_format;
1811 }
1812 assert_avoptions(output_files[i]->opts);
1813 if (strcmp(oc->oformat->name, "rtp")) {
1814 want_sdp = 0;
1815 }
1816 }
1817
1818 dump_format:
1819 /* dump the file output parameters - cannot be done before in case
1820 of stream copy */
1821 for (i = 0; i < nb_output_files; i++) {
1822 av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
1823 }
1824
1825 /* dump the stream mapping */
1826 av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
1827 for (i = 0; i < nb_input_streams; i++) {
1828 ist = input_streams[i];
1829
1830 for (j = 0; j < ist->nb_filters; j++) {
1831 if (ist->filters[j]->graph->graph_desc) {
1832 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d (%s) -> %s",
1833 ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
1834 ist->filters[j]->name);
1835 if (nb_filtergraphs > 1)
1836 av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
1837 av_log(NULL, AV_LOG_INFO, "\n");
1838 }
1839 }
1840 }
1841
1842 for (i = 0; i < nb_output_streams; i++) {
1843 ost = output_streams[i];
1844
1845 if (ost->attachment_filename) {
1846 /* an attached file */
1847 av_log(NULL, AV_LOG_INFO, " File %s -> Stream #%d:%d\n",
1848 ost->attachment_filename, ost->file_index, ost->index);
1849 continue;
1850 }
1851
1852 if (ost->filter && ost->filter->graph->graph_desc) {
1853 /* output from a complex graph */
1854 av_log(NULL, AV_LOG_INFO, " %s", ost->filter->name);
1855 if (nb_filtergraphs > 1)
1856 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
1857
1858 av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
1859 ost->index, ost->enc ? ost->enc->name : "?");
1860 continue;
1861 }
1862
1863 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d -> #%d:%d",
1864 input_streams[ost->source_index]->file_index,
1865 input_streams[ost->source_index]->st->index,
1866 ost->file_index,
1867 ost->index);
1868 if (ost->sync_ist != input_streams[ost->source_index])
1869 av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
1870 ost->sync_ist->file_index,
1871 ost->sync_ist->st->index);
1872 if (ost->stream_copy)
1873 av_log(NULL, AV_LOG_INFO, " (copy)");
1874 else
1875 av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
1876 input_streams[ost->source_index]->dec->name : "?",
1877 ost->enc ? ost->enc->name : "?");
1878 av_log(NULL, AV_LOG_INFO, "\n");
1879 }
1880
1881 if (ret) {
1882 av_log(NULL, AV_LOG_ERROR, "%s\n", error);
1883 return ret;
1884 }
1885
1886 if (want_sdp) {
1887 print_sdp();
1888 }
1889
1890 return 0;
1891 }
1892
1893 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
1894 static int need_output(void)
1895 {
1896 int i;
1897
1898 for (i = 0; i < nb_output_streams; i++) {
1899 OutputStream *ost = output_streams[i];
1900 OutputFile *of = output_files[ost->file_index];
1901 AVFormatContext *os = output_files[ost->file_index]->ctx;
1902
1903 if (ost->finished ||
1904 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
1905 continue;
1906 if (ost->frame_number >= ost->max_frames) {
1907 int j;
1908 for (j = 0; j < of->ctx->nb_streams; j++)
1909 output_streams[of->ost_index + j]->finished = 1;
1910 continue;
1911 }
1912
1913 return 1;
1914 }
1915
1916 return 0;
1917 }
1918
1919 static InputFile *select_input_file(void)
1920 {
1921 InputFile *ifile = NULL;
1922 int64_t ipts_min = INT64_MAX;
1923 int i;
1924
1925 for (i = 0; i < nb_input_streams; i++) {
1926 InputStream *ist = input_streams[i];
1927 int64_t ipts = ist->last_dts;
1928
1929 if (ist->discard || input_files[ist->file_index]->eagain)
1930 continue;
1931 if (!input_files[ist->file_index]->eof_reached) {
1932 if (ipts < ipts_min) {
1933 ipts_min = ipts;
1934 ifile = input_files[ist->file_index];
1935 }
1936 }
1937 }
1938
1939 return ifile;
1940 }
1941
1942 #if HAVE_PTHREADS
1943 static void *input_thread(void *arg)
1944 {
1945 InputFile *f = arg;
1946 int ret = 0;
1947
1948 while (!transcoding_finished && ret >= 0) {
1949 AVPacket pkt;
1950 ret = av_read_frame(f->ctx, &pkt);
1951
1952 if (ret == AVERROR(EAGAIN)) {
1953 av_usleep(10000);
1954 ret = 0;
1955 continue;
1956 } else if (ret < 0)
1957 break;
1958
1959 pthread_mutex_lock(&f->fifo_lock);
1960 while (!av_fifo_space(f->fifo))
1961 pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
1962
1963 av_dup_packet(&pkt);
1964 av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
1965
1966 pthread_mutex_unlock(&f->fifo_lock);
1967 }
1968
1969 f->finished = 1;
1970 return NULL;
1971 }
1972
1973 static void free_input_threads(void)
1974 {
1975 int i;
1976
1977 if (nb_input_files == 1)
1978 return;
1979
1980 transcoding_finished = 1;
1981
1982 for (i = 0; i < nb_input_files; i++) {
1983 InputFile *f = input_files[i];
1984 AVPacket pkt;
1985
1986 if (!f->fifo || f->joined)
1987 continue;
1988
1989 pthread_mutex_lock(&f->fifo_lock);
1990 while (av_fifo_size(f->fifo)) {
1991 av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
1992 av_free_packet(&pkt);
1993 }
1994 pthread_cond_signal(&f->fifo_cond);
1995 pthread_mutex_unlock(&f->fifo_lock);
1996
1997 pthread_join(f->thread, NULL);
1998 f->joined = 1;
1999
2000 while (av_fifo_size(f->fifo)) {
2001 av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2002 av_free_packet(&pkt);
2003 }
2004 av_fifo_free(f->fifo);
2005 }
2006 }
2007
2008 static int init_input_threads(void)
2009 {
2010 int i, ret;
2011
2012 if (nb_input_files == 1)
2013 return 0;
2014
2015 for (i = 0; i < nb_input_files; i++) {
2016 InputFile *f = input_files[i];
2017
2018 if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2019 return AVERROR(ENOMEM);
2020
2021 pthread_mutex_init(&f->fifo_lock, NULL);
2022 pthread_cond_init (&f->fifo_cond, NULL);
2023
2024 if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2025 return AVERROR(ret);
2026 }
2027 return 0;
2028 }
2029
2030 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2031 {
2032 int ret = 0;
2033
2034 pthread_mutex_lock(&f->fifo_lock);
2035
2036 if (av_fifo_size(f->fifo)) {
2037 av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2038 pthread_cond_signal(&f->fifo_cond);
2039 } else {
2040 if (f->finished)
2041 ret = AVERROR_EOF;
2042 else
2043 ret = AVERROR(EAGAIN);
2044 }
2045
2046 pthread_mutex_unlock(&f->fifo_lock);
2047
2048 return ret;
2049 }
2050 #endif
2051
2052 static int get_input_packet(InputFile *f, AVPacket *pkt)
2053 {
2054 #if HAVE_PTHREADS
2055 if (nb_input_files > 1)
2056 return get_input_packet_mt(f, pkt);
2057 #endif
2058 return av_read_frame(f->ctx, pkt);
2059 }
2060
2061 static int got_eagain(void)
2062 {
2063 int i;
2064 for (i = 0; i < nb_input_files; i++)
2065 if (input_files[i]->eagain)
2066 return 1;
2067 return 0;
2068 }
2069
2070 static void reset_eagain(void)
2071 {
2072 int i;
2073 for (i = 0; i < nb_input_files; i++)
2074 input_files[i]->eagain = 0;
2075 }
2076
2077 /*
2078 * Read one packet from an input file and send it for
2079 * - decoding -> lavfi (audio/video)
2080 * - decoding -> encoding -> muxing (subtitles)
2081 * - muxing (streamcopy)
2082 *
2083 * Return
2084 * - 0 -- one packet was read and processed
2085 * - AVERROR(EAGAIN) -- no packets were available for selected file,
2086 * this function should be called again
2087 * - AVERROR_EOF -- this function should not be called again
2088 */
2089 static int process_input(void)
2090 {
2091 InputFile *ifile;
2092 AVFormatContext *is;
2093 InputStream *ist;
2094 AVPacket pkt;
2095 int ret, i, j;
2096
2097 /* select the stream that we must read now */
2098 ifile = select_input_file();
2099 /* if none, if is finished */
2100 if (!ifile) {
2101 if (got_eagain()) {
2102 reset_eagain();
2103 av_usleep(10000);
2104 return AVERROR(EAGAIN);
2105 }
2106 av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from.\n");
2107 return AVERROR_EOF;
2108 }
2109
2110 is = ifile->ctx;
2111 ret = get_input_packet(ifile, &pkt);
2112
2113 if (ret == AVERROR(EAGAIN)) {
2114 ifile->eagain = 1;
2115 return ret;
2116 }
2117 if (ret < 0) {
2118 if (ret != AVERROR_EOF) {
2119 print_error(is->filename, ret);
2120 if (exit_on_error)
2121 exit(1);
2122 }
2123 ifile->eof_reached = 1;
2124
2125 for (i = 0; i < ifile->nb_streams; i++) {
2126 ist = input_streams[ifile->ist_index + i];
2127 if (ist->decoding_needed)
2128 output_packet(ist, NULL);
2129
2130 /* mark all outputs that don't go through lavfi as finished */
2131 for (j = 0; j < nb_output_streams; j++) {
2132 OutputStream *ost = output_streams[j];
2133
2134 if (ost->source_index == ifile->ist_index + i &&
2135 (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2136 ost->finished= 1;
2137 }
2138 }
2139
2140 return AVERROR(EAGAIN);
2141 }
2142
2143 reset_eagain();
2144
2145 if (do_pkt_dump) {
2146 av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2147 is->streams[pkt.stream_index]);
2148 }
2149 /* the following test is needed in case new streams appear
2150 dynamically in stream : we ignore them */
2151 if (pkt.stream_index >= ifile->nb_streams)
2152 goto discard_packet;
2153
2154 ist = input_streams[ifile->ist_index + pkt.stream_index];
2155 if (ist->discard)
2156 goto discard_packet;
2157
2158 if (pkt.dts != AV_NOPTS_VALUE)
2159 pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2160 if (pkt.pts != AV_NOPTS_VALUE)
2161 pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2162
2163 if (pkt.pts != AV_NOPTS_VALUE)
2164 pkt.pts *= ist->ts_scale;
2165 if (pkt.dts != AV_NOPTS_VALUE)
2166 pkt.dts *= ist->ts_scale;
2167
2168 if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2169 (is->iformat->flags & AVFMT_TS_DISCONT)) {
2170 int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2171 int64_t delta = pkt_dts - ist->next_dts;
2172
2173 if ((FFABS(delta) > 1LL * dts_delta_threshold * AV_TIME_BASE || pkt_dts + 1 < ist->last_dts) && !copy_ts) {
2174 ifile->ts_offset -= delta;
2175 av_log(NULL, AV_LOG_DEBUG,
2176 "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2177 delta, ifile->ts_offset);
2178 pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2179 if (pkt.pts != AV_NOPTS_VALUE)
2180 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2181 }
2182 }
2183
2184 ret = output_packet(ist, &pkt);
2185 if (ret < 0) {
2186 av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
2187 ist->file_index, ist->st->index);
2188 if (exit_on_error)
2189 exit(1);
2190 }
2191
2192 discard_packet:
2193 av_free_packet(&pkt);
2194
2195 return 0;
2196 }
2197
2198 /*
2199 * The following code is the main loop of the file converter
2200 */
2201 static int transcode(void)
2202 {
2203 int ret, i, need_input = 1;
2204 AVFormatContext *os;
2205 OutputStream *ost;
2206 InputStream *ist;
2207 int64_t timer_start;
2208
2209 ret = transcode_init();
2210 if (ret < 0)
2211 goto fail;
2212
2213 av_log(NULL, AV_LOG_INFO, "Press ctrl-c to stop encoding\n");
2214 term_init();
2215
2216 timer_start = av_gettime();
2217
2218 #if HAVE_PTHREADS
2219 if ((ret = init_input_threads()) < 0)
2220 goto fail;
2221 #endif
2222
2223 while (!received_sigterm) {
2224 /* check if there's any stream where output is still needed */
2225 if (!need_output()) {
2226 av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
2227 break;
2228 }
2229
2230 /* read and process one input packet if needed */
2231 if (need_input) {
2232 ret = process_input();
2233 if (ret == AVERROR_EOF)
2234 need_input = 0;
2235 }
2236
2237 ret = poll_filters();
2238 if (ret < 0) {
2239 if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
2240 continue;
2241
2242 av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
2243 break;
2244 }
2245
2246 /* dump report by using the output first video and audio streams */
2247 print_report(0, timer_start);
2248 }
2249 #if HAVE_PTHREADS
2250 free_input_threads();
2251 #endif
2252
2253 /* at the end of stream, we must flush the decoder buffers */
2254 for (i = 0; i < nb_input_streams; i++) {
2255 ist = input_streams[i];
2256 if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
2257 output_packet(ist, NULL);
2258 }
2259 }
2260 poll_filters();
2261 flush_encoders();
2262
2263 term_exit();
2264
2265 /* write the trailer if needed and close file */
2266 for (i = 0; i < nb_output_files; i++) {
2267 os = output_files[i]->ctx;
2268 av_write_trailer(os);
2269 }
2270
2271 /* dump report by using the first video and audio streams */
2272 print_report(1, timer_start);
2273
2274 /* close each encoder */
2275 for (i = 0; i < nb_output_streams; i++) {
2276 ost = output_streams[i];
2277 if (ost->encoding_needed) {
2278 av_freep(&ost->st->codec->stats_in);
2279 avcodec_close(ost->st->codec);
2280 }
2281 }
2282
2283 /* close each decoder */
2284 for (i = 0; i < nb_input_streams; i++) {
2285 ist = input_streams[i];
2286 if (ist->decoding_needed) {
2287 avcodec_close(ist->st->codec);
2288 }
2289 }
2290
2291 /* finished ! */
2292 ret = 0;
2293
2294 fail:
2295 #if HAVE_PTHREADS
2296 free_input_threads();
2297 #endif
2298
2299 if (output_streams) {
2300 for (i = 0; i < nb_output_streams; i++) {
2301 ost = output_streams[i];
2302 if (ost) {
2303 if (ost->stream_copy)
2304 av_freep(&ost->st->codec->extradata);
2305 if (ost->logfile) {
2306 fclose(ost->logfile);
2307 ost->logfile = NULL;
2308 }
2309 av_freep(&ost->st->codec->subtitle_header);
2310 av_free(ost->forced_kf_pts);
2311 av_dict_free(&ost->opts);
2312 av_dict_free(&ost->resample_opts);
2313 }
2314 }
2315 }
2316 return ret;
2317 }
2318
2319 static int64_t getutime(void)
2320 {
2321 #if HAVE_GETRUSAGE
2322 struct rusage rusage;
2323
2324 getrusage(RUSAGE_SELF, &rusage);
2325 return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
2326 #elif HAVE_GETPROCESSTIMES
2327 HANDLE proc;
2328 FILETIME c, e, k, u;
2329 proc = GetCurrentProcess();
2330 GetProcessTimes(proc, &c, &e, &k, &u);
2331 return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
2332 #else
2333 return av_gettime();
2334 #endif
2335 }
2336
2337 static int64_t getmaxrss(void)
2338 {
2339 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
2340 struct rusage rusage;
2341 getrusage(RUSAGE_SELF, &rusage);
2342 return (int64_t)rusage.ru_maxrss * 1024;
2343 #elif HAVE_GETPROCESSMEMORYINFO
2344 HANDLE proc;
2345 PROCESS_MEMORY_COUNTERS memcounters;
2346 proc = GetCurrentProcess();
2347 memcounters.cb = sizeof(memcounters);
2348 GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
2349 return memcounters.PeakPagefileUsage;
2350 #else
2351 return 0;
2352 #endif
2353 }
2354
2355 int main(int argc, char **argv)
2356 {
2357 int ret;
2358 int64_t ti;
2359
2360 atexit(exit_program);
2361
2362 av_log_set_flags(AV_LOG_SKIP_REPEATED);
2363 parse_loglevel(argc, argv, options);
2364
2365 avcodec_register_all();
2366 #if CONFIG_AVDEVICE
2367 avdevice_register_all();
2368 #endif
2369 avfilter_register_all();
2370 av_register_all();
2371 avformat_network_init();
2372
2373 show_banner();
2374
2375 /* parse options and open all input/output files */
2376 ret = avconv_parse_options(argc, argv);
2377 if (ret < 0)
2378 exit(1);
2379
2380 if (nb_output_files <= 0 && nb_input_files == 0) {
2381 show_usage();
2382 av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
2383 exit(1);
2384 }
2385
2386 /* file converter / grab */
2387 if (nb_output_files <= 0) {
2388 fprintf(stderr, "At least one output file must be specified\n");
2389 exit(1);
2390 }
2391
2392 ti = getutime();
2393 if (transcode() < 0)
2394 exit(1);
2395 ti = getutime() - ti;
2396 if (do_benchmark) {
2397 int maxrss = getmaxrss() / 1024;
2398 printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss);
2399 }
2400
2401 exit(0);
2402 return 0;
2403 }
A couple of patches to make building with MPlayer easier