?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
h264: remove obsolete comment.
[FFMpeg-mirror/mplayer-patches.git] / avconv.c
blobf086cbb5e2663694c162fe8f4676eeba2a637f21
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 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
408 {
409 AVCodecContext *dec;
410 AVPicture *picture2;
411 AVPicture picture_tmp;
412 uint8_t *buf = 0;
413
414 dec = ist->st->codec;
415
416 /* deinterlace : must be done before any resize */
417 if (do_deinterlace) {
418 int size;
419
420 /* create temporary picture */
421 size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
422 buf = av_malloc(size);
423 if (!buf)
424 return;
425
426 picture2 = &picture_tmp;
427 avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
428
429 if (avpicture_deinterlace(picture2, picture,
430 dec->pix_fmt, dec->width, dec->height) < 0) {
431 /* if error, do not deinterlace */
432 av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
433 av_free(buf);
434 buf = NULL;
435 picture2 = picture;
436 }
437 } else {
438 picture2 = picture;
439 }
440
441 if (picture != picture2)
442 *picture = *picture2;
443 *bufp = buf;
444 }
445
446 static void do_subtitle_out(AVFormatContext *s,
447 OutputStream *ost,
448 InputStream *ist,
449 AVSubtitle *sub,
450 int64_t pts)
451 {
452 static uint8_t *subtitle_out = NULL;
453 int subtitle_out_max_size = 1024 * 1024;
454 int subtitle_out_size, nb, i;
455 AVCodecContext *enc;
456 AVPacket pkt;
457
458 if (pts == AV_NOPTS_VALUE) {
459 av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
460 if (exit_on_error)
461 exit(1);
462 return;
463 }
464
465 enc = ost->st->codec;
466
467 if (!subtitle_out) {
468 subtitle_out = av_malloc(subtitle_out_max_size);
469 }
470
471 /* Note: DVB subtitle need one packet to draw them and one other
472 packet to clear them */
473 /* XXX: signal it in the codec context ? */
474 if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
475 nb = 2;
476 else
477 nb = 1;
478
479 for (i = 0; i < nb; i++) {
480 ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
481 if (!check_recording_time(ost))
482 return;
483
484 sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
485 // start_display_time is required to be 0
486 sub->pts += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
487 sub->end_display_time -= sub->start_display_time;
488 sub->start_display_time = 0;
489 subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
490 subtitle_out_max_size, sub);
491 if (subtitle_out_size < 0) {
492 av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
493 exit(1);
494 }
495
496 av_init_packet(&pkt);
497 pkt.data = subtitle_out;
498 pkt.size = subtitle_out_size;
499 pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
500 if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
501 /* XXX: the pts correction is handled here. Maybe handling
502 it in the codec would be better */
503 if (i == 0)
504 pkt.pts += 90 * sub->start_display_time;
505 else
506 pkt.pts += 90 * sub->end_display_time;
507 }
508 write_frame(s, &pkt, ost);
509 }
510 }
511
512 static void do_video_out(AVFormatContext *s,
513 OutputStream *ost,
514 AVFrame *in_picture,
515 int *frame_size)
516 {
517 int ret, format_video_sync;
518 AVPacket pkt;
519 AVCodecContext *enc = ost->st->codec;
520
521 *frame_size = 0;
522
523 format_video_sync = video_sync_method;
524 if (format_video_sync == VSYNC_AUTO)
525 format_video_sync = (s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH :
526 (s->oformat->flags & AVFMT_VARIABLE_FPS) ? VSYNC_VFR : VSYNC_CFR;
527 if (format_video_sync != VSYNC_PASSTHROUGH &&
528 ost->frame_number &&
529 in_picture->pts != AV_NOPTS_VALUE &&
530 in_picture->pts < ost->sync_opts) {
531 nb_frames_drop++;
532 av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
533 return;
534 }
535
536 if (in_picture->pts == AV_NOPTS_VALUE)
537 in_picture->pts = ost->sync_opts;
538 ost->sync_opts = in_picture->pts;
539
540
541 if (!ost->frame_number)
542 ost->first_pts = in_picture->pts;
543
544 av_init_packet(&pkt);
545 pkt.data = NULL;
546 pkt.size = 0;
547
548 if (!check_recording_time(ost) ||
549 ost->frame_number >= ost->max_frames)
550 return;
551
552 if (s->oformat->flags & AVFMT_RAWPICTURE &&
553 enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
554 /* raw pictures are written as AVPicture structure to
555 avoid any copies. We support temporarily the older
556 method. */
557 enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
558 enc->coded_frame->top_field_first = in_picture->top_field_first;
559 pkt.data = (uint8_t *)in_picture;
560 pkt.size = sizeof(AVPicture);
561 pkt.pts = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
562 pkt.flags |= AV_PKT_FLAG_KEY;
563
564 write_frame(s, &pkt, ost);
565 } else {
566 int got_packet;
567 AVFrame big_picture;
568
569 big_picture = *in_picture;
570 /* better than nothing: use input picture interlaced
571 settings */
572 big_picture.interlaced_frame = in_picture->interlaced_frame;
573 if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
574 if (ost->top_field_first == -1)
575 big_picture.top_field_first = in_picture->top_field_first;
576 else
577 big_picture.top_field_first = !!ost->top_field_first;
578 }
579
580 big_picture.quality = ost->st->codec->global_quality;
581 if (!enc->me_threshold)
582 big_picture.pict_type = 0;
583 if (ost->forced_kf_index < ost->forced_kf_count &&
584 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
585 big_picture.pict_type = AV_PICTURE_TYPE_I;
586 ost->forced_kf_index++;
587 }
588 ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
589 if (ret < 0) {
590 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
591 exit(1);
592 }
593
594 if (got_packet) {
595 if (pkt.pts != AV_NOPTS_VALUE)
596 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
597 if (pkt.dts != AV_NOPTS_VALUE)
598 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
599
600 write_frame(s, &pkt, ost);
601 *frame_size = pkt.size;
602 video_size += pkt.size;
603
604 /* if two pass, output log */
605 if (ost->logfile && enc->stats_out) {
606 fprintf(ost->logfile, "%s", enc->stats_out);
607 }
608 }
609 }
610 ost->sync_opts++;
611 /*
612 * For video, number of frames in == number of packets out.
613 * But there may be reordering, so we can't throw away frames on encoder
614 * flush, we need to limit them here, before they go into encoder.
615 */
616 ost->frame_number++;
617 }
618
619 static double psnr(double d)
620 {
621 return -10.0 * log(d) / log(10.0);
622 }
623
624 static void do_video_stats(OutputStream *ost, int frame_size)
625 {
626 AVCodecContext *enc;
627 int frame_number;
628 double ti1, bitrate, avg_bitrate;
629
630 /* this is executed just the first time do_video_stats is called */
631 if (!vstats_file) {
632 vstats_file = fopen(vstats_filename, "w");
633 if (!vstats_file) {
634 perror("fopen");
635 exit(1);
636 }
637 }
638
639 enc = ost->st->codec;
640 if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
641 frame_number = ost->frame_number;
642 fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
643 if (enc->flags&CODEC_FLAG_PSNR)
644 fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
645
646 fprintf(vstats_file,"f_size= %6d ", frame_size);
647 /* compute pts value */
648 ti1 = ost->sync_opts * av_q2d(enc->time_base);
649 if (ti1 < 0.01)
650 ti1 = 0.01;
651
652 bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
653 avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
654 fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
655 (double)video_size / 1024, ti1, bitrate, avg_bitrate);
656 fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
657 }
658 }
659
660 /*
661 * Read one frame for lavfi output for ost and encode it.
662 */
663 static int poll_filter(OutputStream *ost)
664 {
665 OutputFile *of = output_files[ost->file_index];
666 AVFilterBufferRef *picref;
667 AVFrame *filtered_frame = NULL;
668 int frame_size, ret;
669
670 if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
671 return AVERROR(ENOMEM);
672 } else
673 avcodec_get_frame_defaults(ost->filtered_frame);
674 filtered_frame = ost->filtered_frame;
675
676 if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
677 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
678 ret = av_buffersink_read_samples(ost->filter->filter, &picref,
679 ost->st->codec->frame_size);
680 else
681 ret = av_buffersink_read(ost->filter->filter, &picref);
682
683 if (ret < 0)
684 return ret;
685
686 avfilter_copy_buf_props(filtered_frame, picref);
687 if (picref->pts != AV_NOPTS_VALUE) {
688 filtered_frame->pts = av_rescale_q(picref->pts,
689 ost->filter->filter->inputs[0]->time_base,
690 ost->st->codec->time_base) -
691 av_rescale_q(of->start_time,
692 AV_TIME_BASE_Q,
693 ost->st->codec->time_base);
694
695 if (of->start_time && filtered_frame->pts < 0) {
696 avfilter_unref_buffer(picref);
697 return 0;
698 }
699 }
700
701 switch (ost->filter->filter->inputs[0]->type) {
702 case AVMEDIA_TYPE_VIDEO:
703 if (!ost->frame_aspect_ratio)
704 ost->st->codec->sample_aspect_ratio = picref->video->pixel_aspect;
705
706 do_video_out(of->ctx, ost, filtered_frame, &frame_size);
707 if (vstats_filename && frame_size)
708 do_video_stats(ost, frame_size);
709 break;
710 case AVMEDIA_TYPE_AUDIO:
711 do_audio_out(of->ctx, ost, filtered_frame);
712 break;
713 default:
714 // TODO support subtitle filters
715 av_assert0(0);
716 }
717
718 avfilter_unref_buffer(picref);
719
720 return 0;
721 }
722
723 /*
724 * Read as many frames from possible from lavfi and encode them.
725 *
726 * Always read from the active stream with the lowest timestamp. If no frames
727 * are available for it then return EAGAIN and wait for more input. This way we
728 * can use lavfi sources that generate unlimited amount of frames without memory
729 * usage exploding.
730 */
731 static int poll_filters(void)
732 {
733 int i, j, ret = 0;
734
735 while (ret >= 0 && !received_sigterm) {
736 OutputStream *ost = NULL;
737 int64_t min_pts = INT64_MAX;
738
739 /* choose output stream with the lowest timestamp */
740 for (i = 0; i < nb_output_streams; i++) {
741 int64_t pts = output_streams[i]->sync_opts;
742
743 if (!output_streams[i]->filter || output_streams[i]->finished)
744 continue;
745
746 pts = av_rescale_q(pts, output_streams[i]->st->codec->time_base,
747 AV_TIME_BASE_Q);
748 if (pts < min_pts) {
749 min_pts = pts;
750 ost = output_streams[i];
751 }
752 }
753
754 if (!ost)
755 break;
756
757 ret = poll_filter(ost);
758
759 if (ret == AVERROR_EOF) {
760 OutputFile *of = output_files[ost->file_index];
761
762 ost->finished = 1;
763
764 if (of->shortest) {
765 for (j = 0; j < of->ctx->nb_streams; j++)
766 output_streams[of->ost_index + j]->finished = 1;
767 }
768
769 ret = 0;
770 } else if (ret == AVERROR(EAGAIN))
771 return 0;
772 }
773
774 return ret;
775 }
776
777 static void print_report(int is_last_report, int64_t timer_start)
778 {
779 char buf[1024];
780 OutputStream *ost;
781 AVFormatContext *oc;
782 int64_t total_size;
783 AVCodecContext *enc;
784 int frame_number, vid, i;
785 double bitrate, ti1, pts;
786 static int64_t last_time = -1;
787 static int qp_histogram[52];
788
789 if (!print_stats && !is_last_report)
790 return;
791
792 if (!is_last_report) {
793 int64_t cur_time;
794 /* display the report every 0.5 seconds */
795 cur_time = av_gettime();
796 if (last_time == -1) {
797 last_time = cur_time;
798 return;
799 }
800 if ((cur_time - last_time) < 500000)
801 return;
802 last_time = cur_time;
803 }
804
805
806 oc = output_files[0]->ctx;
807
808 total_size = avio_size(oc->pb);
809 if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
810 total_size = avio_tell(oc->pb);
811 if (total_size < 0) {
812 char errbuf[128];
813 av_strerror(total_size, errbuf, sizeof(errbuf));
814 av_log(NULL, AV_LOG_VERBOSE, "Bitrate not available, "
815 "avio_tell() failed: %s\n", errbuf);
816 total_size = 0;
817 }
818
819 buf[0] = '\0';
820 ti1 = 1e10;
821 vid = 0;
822 for (i = 0; i < nb_output_streams; i++) {
823 float q = -1;
824 ost = output_streams[i];
825 enc = ost->st->codec;
826 if (!ost->stream_copy && enc->coded_frame)
827 q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
828 if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
829 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
830 }
831 if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
832 float t = (av_gettime() - timer_start) / 1000000.0;
833
834 frame_number = ost->frame_number;
835 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
836 frame_number, (t > 1) ? (int)(frame_number / t + 0.5) : 0, q);
837 if (is_last_report)
838 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
839 if (qp_hist) {
840 int j;
841 int qp = lrintf(q);
842 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
843 qp_histogram[qp]++;
844 for (j = 0; j < 32; j++)
845 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
846 }
847 if (enc->flags&CODEC_FLAG_PSNR) {
848 int j;
849 double error, error_sum = 0;
850 double scale, scale_sum = 0;
851 char type[3] = { 'Y','U','V' };
852 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
853 for (j = 0; j < 3; j++) {
854 if (is_last_report) {
855 error = enc->error[j];
856 scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
857 } else {
858 error = enc->coded_frame->error[j];
859 scale = enc->width * enc->height * 255.0 * 255.0;
860 }
861 if (j)
862 scale /= 4;
863 error_sum += error;
864 scale_sum += scale;
865 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
866 }
867 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
868 }
869 vid = 1;
870 }
871 /* compute min output value */
872 pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
873 if ((pts < ti1) && (pts > 0))
874 ti1 = pts;
875 }
876 if (ti1 < 0.01)
877 ti1 = 0.01;
878
879 bitrate = (double)(total_size * 8) / ti1 / 1000.0;
880
881 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
882 "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
883 (double)total_size / 1024, ti1, bitrate);
884
885 if (nb_frames_dup || nb_frames_drop)
886 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
887 nb_frames_dup, nb_frames_drop);
888
889 av_log(NULL, AV_LOG_INFO, "%s \r", buf);
890
891 fflush(stderr);
892
893 if (is_last_report) {
894 int64_t raw= audio_size + video_size + extra_size;
895 av_log(NULL, AV_LOG_INFO, "\n");
896 av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
897 video_size / 1024.0,
898 audio_size / 1024.0,
899 extra_size / 1024.0,
900 100.0 * (total_size - raw) / raw
901 );
902 }
903 }
904
905 static void flush_encoders(void)
906 {
907 int i, ret;
908
909 for (i = 0; i < nb_output_streams; i++) {
910 OutputStream *ost = output_streams[i];
911 AVCodecContext *enc = ost->st->codec;
912 AVFormatContext *os = output_files[ost->file_index]->ctx;
913 int stop_encoding = 0;
914
915 if (!ost->encoding_needed)
916 continue;
917
918 if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
919 continue;
920 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
921 continue;
922
923 for (;;) {
924 int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
925 const char *desc;
926 int64_t *size;
927
928 switch (ost->st->codec->codec_type) {
929 case AVMEDIA_TYPE_AUDIO:
930 encode = avcodec_encode_audio2;
931 desc = "Audio";
932 size = &audio_size;
933 break;
934 case AVMEDIA_TYPE_VIDEO:
935 encode = avcodec_encode_video2;
936 desc = "Video";
937 size = &video_size;
938 break;
939 default:
940 stop_encoding = 1;
941 }
942
943 if (encode) {
944 AVPacket pkt;
945 int got_packet;
946 av_init_packet(&pkt);
947 pkt.data = NULL;
948 pkt.size = 0;
949
950 ret = encode(enc, &pkt, NULL, &got_packet);
951 if (ret < 0) {
952 av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
953 exit(1);
954 }
955 *size += ret;
956 if (ost->logfile && enc->stats_out) {
957 fprintf(ost->logfile, "%s", enc->stats_out);
958 }
959 if (!got_packet) {
960 stop_encoding = 1;
961 break;
962 }
963 if (pkt.pts != AV_NOPTS_VALUE)
964 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
965 if (pkt.dts != AV_NOPTS_VALUE)
966 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
967 if (pkt.duration > 0)
968 pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
969 write_frame(os, &pkt, ost);
970 }
971
972 if (stop_encoding)
973 break;
974 }
975 }
976 }
977
978 /*
979 * Check whether a packet from ist should be written into ost at this time
980 */
981 static int check_output_constraints(InputStream *ist, OutputStream *ost)
982 {
983 OutputFile *of = output_files[ost->file_index];
984 int ist_index = input_files[ist->file_index]->ist_index + ist->st->index;
985
986 if (ost->source_index != ist_index)
987 return 0;
988
989 if (of->start_time && ist->last_dts < of->start_time)
990 return 0;
991
992 return 1;
993 }
994
995 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
996 {
997 OutputFile *of = output_files[ost->file_index];
998 int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
999 AVPacket opkt;
1000
1001 av_init_packet(&opkt);
1002
1003 if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1004 !ost->copy_initial_nonkeyframes)
1005 return;
1006
1007 if (of->recording_time != INT64_MAX &&
1008 ist->last_dts >= of->recording_time + of->start_time) {
1009 ost->finished = 1;
1010 return;
1011 }
1012
1013 /* force the input stream PTS */
1014 if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1015 audio_size += pkt->size;
1016 else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1017 video_size += pkt->size;
1018 ost->sync_opts++;
1019 }
1020
1021 if (pkt->pts != AV_NOPTS_VALUE)
1022 opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1023 else
1024 opkt.pts = AV_NOPTS_VALUE;
1025
1026 if (pkt->dts == AV_NOPTS_VALUE)
1027 opkt.dts = av_rescale_q(ist->last_dts, AV_TIME_BASE_Q, ost->st->time_base);
1028 else
1029 opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1030 opkt.dts -= ost_tb_start_time;
1031
1032 opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1033 opkt.flags = pkt->flags;
1034
1035 // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1036 if ( ost->st->codec->codec_id != AV_CODEC_ID_H264
1037 && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1038 && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1039 && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1040 ) {
1041 if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1042 opkt.destruct = av_destruct_packet;
1043 } else {
1044 opkt.data = pkt->data;
1045 opkt.size = pkt->size;
1046 }
1047
1048 write_frame(of->ctx, &opkt, ost);
1049 ost->st->codec->frame_number++;
1050 }
1051
1052 static void rate_emu_sleep(InputStream *ist)
1053 {
1054 if (input_files[ist->file_index]->rate_emu) {
1055 int64_t pts = av_rescale(ist->last_dts, 1000000, AV_TIME_BASE);
1056 int64_t now = av_gettime() - ist->start;
1057 if (pts > now)
1058 av_usleep(pts - now);
1059 }
1060 }
1061
1062 int guess_input_channel_layout(InputStream *ist)
1063 {
1064 AVCodecContext *dec = ist->st->codec;
1065
1066 if (!dec->channel_layout) {
1067 char layout_name[256];
1068
1069 dec->channel_layout = av_get_default_channel_layout(dec->channels);
1070 if (!dec->channel_layout)
1071 return 0;
1072 av_get_channel_layout_string(layout_name, sizeof(layout_name),
1073 dec->channels, dec->channel_layout);
1074 av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for Input Stream "
1075 "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1076 }
1077 return 1;
1078 }
1079
1080 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1081 {
1082 AVFrame *decoded_frame;
1083 AVCodecContext *avctx = ist->st->codec;
1084 int i, ret, resample_changed;
1085
1086 if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1087 return AVERROR(ENOMEM);
1088 decoded_frame = ist->decoded_frame;
1089
1090 ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1091 if (!*got_output || ret < 0) {
1092 if (!pkt->size) {
1093 for (i = 0; i < ist->nb_filters; i++)
1094 av_buffersrc_buffer(ist->filters[i]->filter, NULL);
1095 }
1096 return ret;
1097 }
1098
1099 /* if the decoder provides a pts, use it instead of the last packet pts.
1100 the decoder could be delaying output by a packet or more. */
1101 if (decoded_frame->pts != AV_NOPTS_VALUE)
1102 ist->next_dts = decoded_frame->pts;
1103 else if (pkt->pts != AV_NOPTS_VALUE) {
1104 decoded_frame->pts = pkt->pts;
1105 pkt->pts = AV_NOPTS_VALUE;
1106 }
1107
1108 rate_emu_sleep(ist);
1109
1110 resample_changed = ist->resample_sample_fmt != decoded_frame->format ||
1111 ist->resample_channels != avctx->channels ||
1112 ist->resample_channel_layout != decoded_frame->channel_layout ||
1113 ist->resample_sample_rate != decoded_frame->sample_rate;
1114 if (resample_changed) {
1115 char layout1[64], layout2[64];
1116
1117 if (!guess_input_channel_layout(ist)) {
1118 av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1119 "layout for Input Stream #%d.%d\n", ist->file_index,
1120 ist->st->index);
1121 exit(1);
1122 }
1123 decoded_frame->channel_layout = avctx->channel_layout;
1124
1125 av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1126 ist->resample_channel_layout);
1127 av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1128 decoded_frame->channel_layout);
1129
1130 av_log(NULL, AV_LOG_INFO,
1131 "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",
1132 ist->file_index, ist->st->index,
1133 ist->resample_sample_rate, av_get_sample_fmt_name(ist->resample_sample_fmt),
1134 ist->resample_channels, layout1,
1135 decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1136 avctx->channels, layout2);
1137
1138 ist->resample_sample_fmt = decoded_frame->format;
1139 ist->resample_sample_rate = decoded_frame->sample_rate;
1140 ist->resample_channel_layout = decoded_frame->channel_layout;
1141 ist->resample_channels = avctx->channels;
1142
1143 for (i = 0; i < nb_filtergraphs; i++)
1144 if (ist_in_filtergraph(filtergraphs[i], ist) &&
1145 configure_filtergraph(filtergraphs[i]) < 0) {
1146 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1147 exit(1);
1148 }
1149 }
1150
1151 if (decoded_frame->pts != AV_NOPTS_VALUE)
1152 decoded_frame->pts = av_rescale_q(decoded_frame->pts,
1153 ist->st->time_base,
1154 (AVRational){1, ist->st->codec->sample_rate});
1155 for (i = 0; i < ist->nb_filters; i++)
1156 av_buffersrc_write_frame(ist->filters[i]->filter, decoded_frame);
1157
1158 return ret;
1159 }
1160
1161 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1162 {
1163 AVFrame *decoded_frame;
1164 void *buffer_to_free = NULL;
1165 int i, ret = 0, resample_changed;
1166
1167 if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1168 return AVERROR(ENOMEM);
1169 decoded_frame = ist->decoded_frame;
1170
1171 ret = avcodec_decode_video2(ist->st->codec,
1172 decoded_frame, got_output, pkt);
1173 if (!*got_output || ret < 0) {
1174 if (!pkt->size) {
1175 for (i = 0; i < ist->nb_filters; i++)
1176 av_buffersrc_buffer(ist->filters[i]->filter, NULL);
1177 }
1178 return ret;
1179 }
1180
1181 decoded_frame->pts = guess_correct_pts(&ist->pts_ctx, decoded_frame->pkt_pts,
1182 decoded_frame->pkt_dts);
1183 pkt->size = 0;
1184 pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1185
1186 rate_emu_sleep(ist);
1187
1188 if (ist->st->sample_aspect_ratio.num)
1189 decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1190
1191 resample_changed = ist->resample_width != decoded_frame->width ||
1192 ist->resample_height != decoded_frame->height ||
1193 ist->resample_pix_fmt != decoded_frame->format;
1194 if (resample_changed) {
1195 av_log(NULL, AV_LOG_INFO,
1196 "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1197 ist->file_index, ist->st->index,
1198 ist->resample_width, ist->resample_height, av_get_pix_fmt_name(ist->resample_pix_fmt),
1199 decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1200
1201 ret = poll_filters();
1202 if (ret < 0 && (ret != AVERROR_EOF && ret != AVERROR(EAGAIN)))
1203 av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
1204
1205 ist->resample_width = decoded_frame->width;
1206 ist->resample_height = decoded_frame->height;
1207 ist->resample_pix_fmt = decoded_frame->format;
1208
1209 for (i = 0; i < nb_filtergraphs; i++)
1210 if (ist_in_filtergraph(filtergraphs[i], ist) &&
1211 configure_filtergraph(filtergraphs[i]) < 0) {
1212 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1213 exit(1);
1214 }
1215 }
1216
1217 for (i = 0; i < ist->nb_filters; i++) {
1218 if (ist->st->codec->codec->capabilities & CODEC_CAP_DR1) {
1219 FrameBuffer *buf = decoded_frame->opaque;
1220 AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1221 decoded_frame->data, decoded_frame->linesize,
1222 AV_PERM_READ | AV_PERM_PRESERVE,
1223 ist->st->codec->width, ist->st->codec->height,
1224 ist->st->codec->pix_fmt);
1225
1226 avfilter_copy_frame_props(fb, decoded_frame);
1227 fb->buf->priv = buf;
1228 fb->buf->free = filter_release_buffer;
1229
1230 buf->refcount++;
1231 av_buffersrc_buffer(ist->filters[i]->filter, fb);
1232 } else
1233 av_buffersrc_write_frame(ist->filters[i]->filter, decoded_frame);
1234 }
1235
1236 av_free(buffer_to_free);
1237 return ret;
1238 }
1239
1240 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1241 {
1242 AVSubtitle subtitle;
1243 int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1244 &subtitle, got_output, pkt);
1245 if (ret < 0)
1246 return ret;
1247 if (!*got_output)
1248 return ret;
1249
1250 rate_emu_sleep(ist);
1251
1252 for (i = 0; i < nb_output_streams; i++) {
1253 OutputStream *ost = output_streams[i];
1254
1255 if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1256 continue;
1257
1258 do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pkt->pts);
1259 }
1260
1261 avsubtitle_free(&subtitle);
1262 return ret;
1263 }
1264
1265 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1266 static int output_packet(InputStream *ist, const AVPacket *pkt)
1267 {
1268 int i;
1269 int got_output;
1270 AVPacket avpkt;
1271
1272 if (ist->next_dts == AV_NOPTS_VALUE)
1273 ist->next_dts = ist->last_dts;
1274
1275 if (pkt == NULL) {
1276 /* EOF handling */
1277 av_init_packet(&avpkt);
1278 avpkt.data = NULL;
1279 avpkt.size = 0;
1280 goto handle_eof;
1281 } else {
1282 avpkt = *pkt;
1283 }
1284
1285 if (pkt->dts != AV_NOPTS_VALUE)
1286 ist->next_dts = ist->last_dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1287
1288 // while we have more to decode or while the decoder did output something on EOF
1289 while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1290 int ret = 0;
1291 handle_eof:
1292
1293 ist->last_dts = ist->next_dts;
1294
1295 if (avpkt.size && avpkt.size != pkt->size) {
1296 av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1297 "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1298 ist->showed_multi_packet_warning = 1;
1299 }
1300
1301 switch (ist->st->codec->codec_type) {
1302 case AVMEDIA_TYPE_AUDIO:
1303 ret = decode_audio (ist, &avpkt, &got_output);
1304 break;
1305 case AVMEDIA_TYPE_VIDEO:
1306 ret = decode_video (ist, &avpkt, &got_output);
1307 if (avpkt.duration)
1308 ist->next_dts += av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1309 else if (ist->st->avg_frame_rate.num)
1310 ist->next_dts += av_rescale_q(1, av_inv_q(ist->st->avg_frame_rate),
1311 AV_TIME_BASE_Q);
1312 else if (ist->st->codec->time_base.num != 0) {
1313 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 :
1314 ist->st->codec->ticks_per_frame;
1315 ist->next_dts += av_rescale_q(ticks, ist->st->codec->time_base, AV_TIME_BASE_Q);
1316 }
1317 break;
1318 case AVMEDIA_TYPE_SUBTITLE:
1319 ret = transcode_subtitles(ist, &avpkt, &got_output);
1320 break;
1321 default:
1322 return -1;
1323 }
1324
1325 if (ret < 0)
1326 return ret;
1327 // touch data and size only if not EOF
1328 if (pkt) {
1329 avpkt.data += ret;
1330 avpkt.size -= ret;
1331 }
1332 if (!got_output) {
1333 continue;
1334 }
1335 }
1336
1337 /* handle stream copy */
1338 if (!ist->decoding_needed) {
1339 rate_emu_sleep(ist);
1340 ist->last_dts = ist->next_dts;
1341 switch (ist->st->codec->codec_type) {
1342 case AVMEDIA_TYPE_AUDIO:
1343 ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1344 ist->st->codec->sample_rate;
1345 break;
1346 case AVMEDIA_TYPE_VIDEO:
1347 if (ist->st->codec->time_base.num != 0) {
1348 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1349 ist->next_dts += ((int64_t)AV_TIME_BASE *
1350 ist->st->codec->time_base.num * ticks) /
1351 ist->st->codec->time_base.den;
1352 }
1353 break;
1354 }
1355 }
1356 for (i = 0; pkt && i < nb_output_streams; i++) {
1357 OutputStream *ost = output_streams[i];
1358
1359 if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1360 continue;
1361
1362 do_streamcopy(ist, ost, pkt);
1363 }
1364
1365 return 0;
1366 }
1367
1368 static void print_sdp(void)
1369 {
1370 char sdp[16384];
1371 int i;
1372 AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1373
1374 if (!avc)
1375 exit(1);
1376 for (i = 0; i < nb_output_files; i++)
1377 avc[i] = output_files[i]->ctx;
1378
1379 av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1380 printf("SDP:\n%s\n", sdp);
1381 fflush(stdout);
1382 av_freep(&avc);
1383 }
1384
1385 static int init_input_stream(int ist_index, char *error, int error_len)
1386 {
1387 int i, ret;
1388 InputStream *ist = input_streams[ist_index];
1389 if (ist->decoding_needed) {
1390 AVCodec *codec = ist->dec;
1391 if (!codec) {
1392 snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d:%d",
1393 ist->st->codec->codec_id, ist->file_index, ist->st->index);
1394 return AVERROR(EINVAL);
1395 }
1396
1397 /* update requested sample format for the decoder based on the
1398 corresponding encoder sample format */
1399 for (i = 0; i < nb_output_streams; i++) {
1400 OutputStream *ost = output_streams[i];
1401 if (ost->source_index == ist_index) {
1402 update_sample_fmt(ist->st->codec, codec, ost->st->codec);
1403 break;
1404 }
1405 }
1406
1407 if (codec->type == AVMEDIA_TYPE_VIDEO && codec->capabilities & CODEC_CAP_DR1) {
1408 ist->st->codec->get_buffer = codec_get_buffer;
1409 ist->st->codec->release_buffer = codec_release_buffer;
1410 ist->st->codec->opaque = &ist->buffer_pool;
1411 }
1412
1413 if (!av_dict_get(ist->opts, "threads", NULL, 0))
1414 av_dict_set(&ist->opts, "threads", "auto", 0);
1415 if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
1416 if (ret == AVERROR_EXPERIMENTAL)
1417 abort_codec_experimental(codec, 0);
1418 snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1419 ist->file_index, ist->st->index);
1420 return ret;
1421 }
1422 assert_avoptions(ist->opts);
1423 }
1424
1425 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;
1426 ist->next_dts = AV_NOPTS_VALUE;
1427 init_pts_correction(&ist->pts_ctx);
1428 ist->is_start = 1;
1429
1430 return 0;
1431 }
1432
1433 static InputStream *get_input_stream(OutputStream *ost)
1434 {
1435 if (ost->source_index >= 0)
1436 return input_streams[ost->source_index];
1437
1438 if (ost->filter) {
1439 FilterGraph *fg = ost->filter->graph;
1440 int i;
1441
1442 for (i = 0; i < fg->nb_inputs; i++)
1443 if (fg->inputs[i]->ist->st->codec->codec_type == ost->st->codec->codec_type)
1444 return fg->inputs[i]->ist;
1445 }
1446
1447 return NULL;
1448 }
1449
1450 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1451 AVCodecContext *avctx)
1452 {
1453 char *p;
1454 int n = 1, i;
1455 int64_t t;
1456
1457 for (p = kf; *p; p++)
1458 if (*p == ',')
1459 n++;
1460 ost->forced_kf_count = n;
1461 ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1462 if (!ost->forced_kf_pts) {
1463 av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1464 exit(1);
1465 }
1466
1467 p = kf;
1468 for (i = 0; i < n; i++) {
1469 char *next = strchr(p, ',');
1470
1471 if (next)
1472 *next++ = 0;
1473
1474 t = parse_time_or_die("force_key_frames", p, 1);
1475 ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1476
1477 p = next;
1478 }
1479 }
1480
1481 static int transcode_init(void)
1482 {
1483 int ret = 0, i, j, k;
1484 AVFormatContext *oc;
1485 AVCodecContext *codec;
1486 OutputStream *ost;
1487 InputStream *ist;
1488 char error[1024];
1489 int want_sdp = 1;
1490
1491 /* init framerate emulation */
1492 for (i = 0; i < nb_input_files; i++) {
1493 InputFile *ifile = input_files[i];
1494 if (ifile->rate_emu)
1495 for (j = 0; j < ifile->nb_streams; j++)
1496 input_streams[j + ifile->ist_index]->start = av_gettime();
1497 }
1498
1499 /* output stream init */
1500 for (i = 0; i < nb_output_files; i++) {
1501 oc = output_files[i]->ctx;
1502 if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
1503 av_dump_format(oc, i, oc->filename, 1);
1504 av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
1505 return AVERROR(EINVAL);
1506 }
1507 }
1508
1509 /* init complex filtergraphs */
1510 for (i = 0; i < nb_filtergraphs; i++)
1511 if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
1512 return ret;
1513
1514 /* for each output stream, we compute the right encoding parameters */
1515 for (i = 0; i < nb_output_streams; i++) {
1516 AVCodecContext *icodec = NULL;
1517 ost = output_streams[i];
1518 oc = output_files[ost->file_index]->ctx;
1519 ist = get_input_stream(ost);
1520
1521 if (ost->attachment_filename)
1522 continue;
1523
1524 codec = ost->st->codec;
1525
1526 if (ist) {
1527 icodec = ist->st->codec;
1528
1529 ost->st->disposition = ist->st->disposition;
1530 codec->bits_per_raw_sample = icodec->bits_per_raw_sample;
1531 codec->chroma_sample_location = icodec->chroma_sample_location;
1532 }
1533
1534 if (ost->stream_copy) {
1535 uint64_t extra_size;
1536
1537 av_assert0(ist && !ost->filter);
1538
1539 extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
1540
1541 if (extra_size > INT_MAX) {
1542 return AVERROR(EINVAL);
1543 }
1544
1545 /* if stream_copy is selected, no need to decode or encode */
1546 codec->codec_id = icodec->codec_id;
1547 codec->codec_type = icodec->codec_type;
1548
1549 if (!codec->codec_tag) {
1550 if (!oc->oformat->codec_tag ||
1551 av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
1552 av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
1553 codec->codec_tag = icodec->codec_tag;
1554 }
1555
1556 codec->bit_rate = icodec->bit_rate;
1557 codec->rc_max_rate = icodec->rc_max_rate;
1558 codec->rc_buffer_size = icodec->rc_buffer_size;
1559 codec->field_order = icodec->field_order;
1560 codec->extradata = av_mallocz(extra_size);
1561 if (!codec->extradata) {
1562 return AVERROR(ENOMEM);
1563 }
1564 memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
1565 codec->extradata_size = icodec->extradata_size;
1566 if (!copy_tb) {
1567 codec->time_base = icodec->time_base;
1568 codec->time_base.num *= icodec->ticks_per_frame;
1569 av_reduce(&codec->time_base.num, &codec->time_base.den,
1570 codec->time_base.num, codec->time_base.den, INT_MAX);
1571 } else
1572 codec->time_base = ist->st->time_base;
1573
1574 switch (codec->codec_type) {
1575 case AVMEDIA_TYPE_AUDIO:
1576 if (audio_volume != 256) {
1577 av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
1578 exit(1);
1579 }
1580 codec->channel_layout = icodec->channel_layout;
1581 codec->sample_rate = icodec->sample_rate;
1582 codec->channels = icodec->channels;
1583 codec->frame_size = icodec->frame_size;
1584 codec->audio_service_type = icodec->audio_service_type;
1585 codec->block_align = icodec->block_align;
1586 break;
1587 case AVMEDIA_TYPE_VIDEO:
1588 codec->pix_fmt = icodec->pix_fmt;
1589 codec->width = icodec->width;
1590 codec->height = icodec->height;
1591 codec->has_b_frames = icodec->has_b_frames;
1592 if (!codec->sample_aspect_ratio.num) {
1593 codec->sample_aspect_ratio =
1594 ost->st->sample_aspect_ratio =
1595 ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
1596 ist->st->codec->sample_aspect_ratio.num ?
1597 ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
1598 }
1599 break;
1600 case AVMEDIA_TYPE_SUBTITLE:
1601 codec->width = icodec->width;
1602 codec->height = icodec->height;
1603 break;
1604 case AVMEDIA_TYPE_DATA:
1605 case AVMEDIA_TYPE_ATTACHMENT:
1606 break;
1607 default:
1608 abort();
1609 }
1610 } else {
1611 if (!ost->enc) {
1612 /* should only happen when a default codec is not present. */
1613 snprintf(error, sizeof(error), "Automatic encoder selection "
1614 "failed for output stream #%d:%d. Default encoder for "
1615 "format %s is probably disabled. Please choose an "
1616 "encoder manually.\n", ost->file_index, ost->index,
1617 oc->oformat->name);
1618 ret = AVERROR(EINVAL);
1619 goto dump_format;
1620 }
1621
1622 if (ist)
1623 ist->decoding_needed = 1;
1624 ost->encoding_needed = 1;
1625
1626 /*
1627 * We want CFR output if and only if one of those is true:
1628 * 1) user specified output framerate with -r
1629 * 2) user specified -vsync cfr
1630 * 3) output format is CFR and the user didn't force vsync to
1631 * something else than CFR
1632 *
1633 * in such a case, set ost->frame_rate
1634 */
1635 if (codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1636 !ost->frame_rate.num && ist &&
1637 (video_sync_method == VSYNC_CFR ||
1638 (video_sync_method == VSYNC_AUTO &&
1639 !(oc->oformat->flags & (AVFMT_NOTIMESTAMPS | AVFMT_VARIABLE_FPS))))) {
1640 ost->frame_rate = ist->framerate.num ? ist->framerate :
1641 ist->st->avg_frame_rate.num ?
1642 ist->st->avg_frame_rate :
1643 (AVRational){25, 1};
1644
1645 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
1646 int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
1647 ost->frame_rate = ost->enc->supported_framerates[idx];
1648 }
1649 }
1650
1651 if (!ost->filter &&
1652 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
1653 codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
1654 FilterGraph *fg;
1655 fg = init_simple_filtergraph(ist, ost);
1656 if (configure_filtergraph(fg)) {
1657 av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
1658 exit(1);
1659 }
1660 }
1661
1662 switch (codec->codec_type) {
1663 case AVMEDIA_TYPE_AUDIO:
1664 codec->sample_fmt = ost->filter->filter->inputs[0]->format;
1665 codec->sample_rate = ost->filter->filter->inputs[0]->sample_rate;
1666 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
1667 codec->channels = av_get_channel_layout_nb_channels(codec->channel_layout);
1668 codec->time_base = (AVRational){ 1, codec->sample_rate };
1669 break;
1670 case AVMEDIA_TYPE_VIDEO:
1671 codec->time_base = ost->filter->filter->inputs[0]->time_base;
1672
1673 codec->width = ost->filter->filter->inputs[0]->w;
1674 codec->height = ost->filter->filter->inputs[0]->h;
1675 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
1676 ost->frame_aspect_ratio ? // overridden by the -aspect cli option
1677 av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
1678 ost->filter->filter->inputs[0]->sample_aspect_ratio;
1679 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
1680
1681 if (icodec &&
1682 (codec->width != icodec->width ||
1683 codec->height != icodec->height ||
1684 codec->pix_fmt != icodec->pix_fmt)) {
1685 codec->bits_per_raw_sample = 0;
1686 }
1687
1688 if (ost->forced_keyframes)
1689 parse_forced_key_frames(ost->forced_keyframes, ost,
1690 ost->st->codec);
1691 break;
1692 case AVMEDIA_TYPE_SUBTITLE:
1693 codec->time_base = (AVRational){1, 1000};
1694 break;
1695 default:
1696 abort();
1697 break;
1698 }
1699 /* two pass mode */
1700 if ((codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
1701 char logfilename[1024];
1702 FILE *f;
1703
1704 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
1705 ost->logfile_prefix ? ost->logfile_prefix :
1706 DEFAULT_PASS_LOGFILENAME_PREFIX,
1707 i);
1708 if (!strcmp(ost->enc->name, "libx264")) {
1709 av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
1710 } else {
1711 if (codec->flags & CODEC_FLAG_PASS1) {
1712 f = fopen(logfilename, "wb");
1713 if (!f) {
1714 av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
1715 logfilename, strerror(errno));
1716 exit(1);
1717 }
1718 ost->logfile = f;
1719 } else {
1720 char *logbuffer;
1721 size_t logbuffer_size;
1722 if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
1723 av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
1724 logfilename);
1725 exit(1);
1726 }
1727 codec->stats_in = logbuffer;
1728 }
1729 }
1730 }
1731 }
1732 }
1733
1734 /* open each encoder */
1735 for (i = 0; i < nb_output_streams; i++) {
1736 ost = output_streams[i];
1737 if (ost->encoding_needed) {
1738 AVCodec *codec = ost->enc;
1739 AVCodecContext *dec = NULL;
1740
1741 if ((ist = get_input_stream(ost)))
1742 dec = ist->st->codec;
1743 if (dec && dec->subtitle_header) {
1744 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
1745 if (!ost->st->codec->subtitle_header) {
1746 ret = AVERROR(ENOMEM);
1747 goto dump_format;
1748 }
1749 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
1750 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
1751 }
1752 if (!av_dict_get(ost->opts, "threads", NULL, 0))
1753 av_dict_set(&ost->opts, "threads", "auto", 0);
1754 if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
1755 if (ret == AVERROR_EXPERIMENTAL)
1756 abort_codec_experimental(codec, 1);
1757 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
1758 ost->file_index, ost->index);
1759 goto dump_format;
1760 }
1761 assert_avoptions(ost->opts);
1762 if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
1763 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
1764 "It takes bits/s as argument, not kbits/s\n");
1765 extra_size += ost->st->codec->extradata_size;
1766
1767 if (ost->st->codec->me_threshold)
1768 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
1769 }
1770 }
1771
1772 /* init input streams */
1773 for (i = 0; i < nb_input_streams; i++)
1774 if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
1775 goto dump_format;
1776
1777 /* discard unused programs */
1778 for (i = 0; i < nb_input_files; i++) {
1779 InputFile *ifile = input_files[i];
1780 for (j = 0; j < ifile->ctx->nb_programs; j++) {
1781 AVProgram *p = ifile->ctx->programs[j];
1782 int discard = AVDISCARD_ALL;
1783
1784 for (k = 0; k < p->nb_stream_indexes; k++)
1785 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
1786 discard = AVDISCARD_DEFAULT;
1787 break;
1788 }
1789 p->discard = discard;
1790 }
1791 }
1792
1793 /* open files and write file headers */
1794 for (i = 0; i < nb_output_files; i++) {
1795 oc = output_files[i]->ctx;
1796 oc->interrupt_callback = int_cb;
1797 if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
1798 char errbuf[128];
1799 const char *errbuf_ptr = errbuf;
1800 if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
1801 errbuf_ptr = strerror(AVUNERROR(ret));
1802 snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
1803 ret = AVERROR(EINVAL);
1804 goto dump_format;
1805 }
1806 assert_avoptions(output_files[i]->opts);
1807 if (strcmp(oc->oformat->name, "rtp")) {
1808 want_sdp = 0;
1809 }
1810 }
1811
1812 dump_format:
1813 /* dump the file output parameters - cannot be done before in case
1814 of stream copy */
1815 for (i = 0; i < nb_output_files; i++) {
1816 av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
1817 }
1818
1819 /* dump the stream mapping */
1820 av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
1821 for (i = 0; i < nb_input_streams; i++) {
1822 ist = input_streams[i];
1823
1824 for (j = 0; j < ist->nb_filters; j++) {
1825 if (ist->filters[j]->graph->graph_desc) {
1826 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d (%s) -> %s",
1827 ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
1828 ist->filters[j]->name);
1829 if (nb_filtergraphs > 1)
1830 av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
1831 av_log(NULL, AV_LOG_INFO, "\n");
1832 }
1833 }
1834 }
1835
1836 for (i = 0; i < nb_output_streams; i++) {
1837 ost = output_streams[i];
1838
1839 if (ost->attachment_filename) {
1840 /* an attached file */
1841 av_log(NULL, AV_LOG_INFO, " File %s -> Stream #%d:%d\n",
1842 ost->attachment_filename, ost->file_index, ost->index);
1843 continue;
1844 }
1845
1846 if (ost->filter && ost->filter->graph->graph_desc) {
1847 /* output from a complex graph */
1848 av_log(NULL, AV_LOG_INFO, " %s", ost->filter->name);
1849 if (nb_filtergraphs > 1)
1850 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
1851
1852 av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
1853 ost->index, ost->enc ? ost->enc->name : "?");
1854 continue;
1855 }
1856
1857 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d -> #%d:%d",
1858 input_streams[ost->source_index]->file_index,
1859 input_streams[ost->source_index]->st->index,
1860 ost->file_index,
1861 ost->index);
1862 if (ost->sync_ist != input_streams[ost->source_index])
1863 av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
1864 ost->sync_ist->file_index,
1865 ost->sync_ist->st->index);
1866 if (ost->stream_copy)
1867 av_log(NULL, AV_LOG_INFO, " (copy)");
1868 else
1869 av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
1870 input_streams[ost->source_index]->dec->name : "?",
1871 ost->enc ? ost->enc->name : "?");
1872 av_log(NULL, AV_LOG_INFO, "\n");
1873 }
1874
1875 if (ret) {
1876 av_log(NULL, AV_LOG_ERROR, "%s\n", error);
1877 return ret;
1878 }
1879
1880 if (want_sdp) {
1881 print_sdp();
1882 }
1883
1884 return 0;
1885 }
1886
1887 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
1888 static int need_output(void)
1889 {
1890 int i;
1891
1892 for (i = 0; i < nb_output_streams; i++) {
1893 OutputStream *ost = output_streams[i];
1894 OutputFile *of = output_files[ost->file_index];
1895 AVFormatContext *os = output_files[ost->file_index]->ctx;
1896
1897 if (ost->finished ||
1898 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
1899 continue;
1900 if (ost->frame_number >= ost->max_frames) {
1901 int j;
1902 for (j = 0; j < of->ctx->nb_streams; j++)
1903 output_streams[of->ost_index + j]->finished = 1;
1904 continue;
1905 }
1906
1907 return 1;
1908 }
1909
1910 return 0;
1911 }
1912
1913 static InputFile *select_input_file(void)
1914 {
1915 InputFile *ifile = NULL;
1916 int64_t ipts_min = INT64_MAX;
1917 int i;
1918
1919 for (i = 0; i < nb_input_streams; i++) {
1920 InputStream *ist = input_streams[i];
1921 int64_t ipts = ist->last_dts;
1922
1923 if (ist->discard || input_files[ist->file_index]->eagain)
1924 continue;
1925 if (!input_files[ist->file_index]->eof_reached) {
1926 if (ipts < ipts_min) {
1927 ipts_min = ipts;
1928 ifile = input_files[ist->file_index];
1929 }
1930 }
1931 }
1932
1933 return ifile;
1934 }
1935
1936 #if HAVE_PTHREADS
1937 static void *input_thread(void *arg)
1938 {
1939 InputFile *f = arg;
1940 int ret = 0;
1941
1942 while (!transcoding_finished && ret >= 0) {
1943 AVPacket pkt;
1944 ret = av_read_frame(f->ctx, &pkt);
1945
1946 if (ret == AVERROR(EAGAIN)) {
1947 av_usleep(10000);
1948 ret = 0;
1949 continue;
1950 } else if (ret < 0)
1951 break;
1952
1953 pthread_mutex_lock(&f->fifo_lock);
1954 while (!av_fifo_space(f->fifo))
1955 pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
1956
1957 av_dup_packet(&pkt);
1958 av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
1959
1960 pthread_mutex_unlock(&f->fifo_lock);
1961 }
1962
1963 f->finished = 1;
1964 return NULL;
1965 }
1966
1967 static void free_input_threads(void)
1968 {
1969 int i;
1970
1971 if (nb_input_files == 1)
1972 return;
1973
1974 transcoding_finished = 1;
1975
1976 for (i = 0; i < nb_input_files; i++) {
1977 InputFile *f = input_files[i];
1978 AVPacket pkt;
1979
1980 if (!f->fifo || f->joined)
1981 continue;
1982
1983 pthread_mutex_lock(&f->fifo_lock);
1984 while (av_fifo_size(f->fifo)) {
1985 av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
1986 av_free_packet(&pkt);
1987 }
1988 pthread_cond_signal(&f->fifo_cond);
1989 pthread_mutex_unlock(&f->fifo_lock);
1990
1991 pthread_join(f->thread, NULL);
1992 f->joined = 1;
1993
1994 while (av_fifo_size(f->fifo)) {
1995 av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
1996 av_free_packet(&pkt);
1997 }
1998 av_fifo_free(f->fifo);
1999 }
2000 }
2001
2002 static int init_input_threads(void)
2003 {
2004 int i, ret;
2005
2006 if (nb_input_files == 1)
2007 return 0;
2008
2009 for (i = 0; i < nb_input_files; i++) {
2010 InputFile *f = input_files[i];
2011
2012 if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2013 return AVERROR(ENOMEM);
2014
2015 pthread_mutex_init(&f->fifo_lock, NULL);
2016 pthread_cond_init (&f->fifo_cond, NULL);
2017
2018 if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2019 return AVERROR(ret);
2020 }
2021 return 0;
2022 }
2023
2024 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2025 {
2026 int ret = 0;
2027
2028 pthread_mutex_lock(&f->fifo_lock);
2029
2030 if (av_fifo_size(f->fifo)) {
2031 av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2032 pthread_cond_signal(&f->fifo_cond);
2033 } else {
2034 if (f->finished)
2035 ret = AVERROR_EOF;
2036 else
2037 ret = AVERROR(EAGAIN);
2038 }
2039
2040 pthread_mutex_unlock(&f->fifo_lock);
2041
2042 return ret;
2043 }
2044 #endif
2045
2046 static int get_input_packet(InputFile *f, AVPacket *pkt)
2047 {
2048 #if HAVE_PTHREADS
2049 if (nb_input_files > 1)
2050 return get_input_packet_mt(f, pkt);
2051 #endif
2052 return av_read_frame(f->ctx, pkt);
2053 }
2054
2055 static int got_eagain(void)
2056 {
2057 int i;
2058 for (i = 0; i < nb_input_files; i++)
2059 if (input_files[i]->eagain)
2060 return 1;
2061 return 0;
2062 }
2063
2064 static void reset_eagain(void)
2065 {
2066 int i;
2067 for (i = 0; i < nb_input_files; i++)
2068 input_files[i]->eagain = 0;
2069 }
2070
2071 /*
2072 * Read one packet from an input file and send it for
2073 * - decoding -> lavfi (audio/video)
2074 * - decoding -> encoding -> muxing (subtitles)
2075 * - muxing (streamcopy)
2076 *
2077 * Return
2078 * - 0 -- one packet was read and processed
2079 * - AVERROR(EAGAIN) -- no packets were available for selected file,
2080 * this function should be called again
2081 * - AVERROR_EOF -- this function should not be called again
2082 */
2083 static int process_input(void)
2084 {
2085 InputFile *ifile;
2086 AVFormatContext *is;
2087 InputStream *ist;
2088 AVPacket pkt;
2089 int ret, i, j;
2090
2091 /* select the stream that we must read now */
2092 ifile = select_input_file();
2093 /* if none, if is finished */
2094 if (!ifile) {
2095 if (got_eagain()) {
2096 reset_eagain();
2097 av_usleep(10000);
2098 return AVERROR(EAGAIN);
2099 }
2100 av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from.\n");
2101 return AVERROR_EOF;
2102 }
2103
2104 is = ifile->ctx;
2105 ret = get_input_packet(ifile, &pkt);
2106
2107 if (ret == AVERROR(EAGAIN)) {
2108 ifile->eagain = 1;
2109 return ret;
2110 }
2111 if (ret < 0) {
2112 if (ret != AVERROR_EOF) {
2113 print_error(is->filename, ret);
2114 if (exit_on_error)
2115 exit(1);
2116 }
2117 ifile->eof_reached = 1;
2118
2119 for (i = 0; i < ifile->nb_streams; i++) {
2120 ist = input_streams[ifile->ist_index + i];
2121 if (ist->decoding_needed)
2122 output_packet(ist, NULL);
2123
2124 /* mark all outputs that don't go through lavfi as finished */
2125 for (j = 0; j < nb_output_streams; j++) {
2126 OutputStream *ost = output_streams[j];
2127
2128 if (ost->source_index == ifile->ist_index + i &&
2129 (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2130 ost->finished= 1;
2131 }
2132 }
2133
2134 return AVERROR(EAGAIN);
2135 }
2136
2137 reset_eagain();
2138
2139 if (do_pkt_dump) {
2140 av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2141 is->streams[pkt.stream_index]);
2142 }
2143 /* the following test is needed in case new streams appear
2144 dynamically in stream : we ignore them */
2145 if (pkt.stream_index >= ifile->nb_streams)
2146 goto discard_packet;
2147
2148 ist = input_streams[ifile->ist_index + pkt.stream_index];
2149 if (ist->discard)
2150 goto discard_packet;
2151
2152 if (pkt.dts != AV_NOPTS_VALUE)
2153 pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2154 if (pkt.pts != AV_NOPTS_VALUE)
2155 pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2156
2157 if (pkt.pts != AV_NOPTS_VALUE)
2158 pkt.pts *= ist->ts_scale;
2159 if (pkt.dts != AV_NOPTS_VALUE)
2160 pkt.dts *= ist->ts_scale;
2161
2162 if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2163 (is->iformat->flags & AVFMT_TS_DISCONT)) {
2164 int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2165 int64_t delta = pkt_dts - ist->next_dts;
2166
2167 if ((FFABS(delta) > 1LL * dts_delta_threshold * AV_TIME_BASE || pkt_dts + 1 < ist->last_dts) && !copy_ts) {
2168 ifile->ts_offset -= delta;
2169 av_log(NULL, AV_LOG_DEBUG,
2170 "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2171 delta, ifile->ts_offset);
2172 pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2173 if (pkt.pts != AV_NOPTS_VALUE)
2174 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2175 }
2176 }
2177
2178 ret = output_packet(ist, &pkt);
2179 if (ret < 0) {
2180 av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
2181 ist->file_index, ist->st->index);
2182 if (exit_on_error)
2183 exit(1);
2184 }
2185
2186 discard_packet:
2187 av_free_packet(&pkt);
2188
2189 return 0;
2190 }
2191
2192 /*
2193 * The following code is the main loop of the file converter
2194 */
2195 static int transcode(void)
2196 {
2197 int ret, i, need_input = 1;
2198 AVFormatContext *os;
2199 OutputStream *ost;
2200 InputStream *ist;
2201 int64_t timer_start;
2202
2203 ret = transcode_init();
2204 if (ret < 0)
2205 goto fail;
2206
2207 av_log(NULL, AV_LOG_INFO, "Press ctrl-c to stop encoding\n");
2208 term_init();
2209
2210 timer_start = av_gettime();
2211
2212 #if HAVE_PTHREADS
2213 if ((ret = init_input_threads()) < 0)
2214 goto fail;
2215 #endif
2216
2217 while (!received_sigterm) {
2218 /* check if there's any stream where output is still needed */
2219 if (!need_output()) {
2220 av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
2221 break;
2222 }
2223
2224 /* read and process one input packet if needed */
2225 if (need_input) {
2226 ret = process_input();
2227 if (ret == AVERROR_EOF)
2228 need_input = 0;
2229 }
2230
2231 ret = poll_filters();
2232 if (ret < 0) {
2233 if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
2234 continue;
2235
2236 av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
2237 break;
2238 }
2239
2240 /* dump report by using the output first video and audio streams */
2241 print_report(0, timer_start);
2242 }
2243 #if HAVE_PTHREADS
2244 free_input_threads();
2245 #endif
2246
2247 /* at the end of stream, we must flush the decoder buffers */
2248 for (i = 0; i < nb_input_streams; i++) {
2249 ist = input_streams[i];
2250 if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
2251 output_packet(ist, NULL);
2252 }
2253 }
2254 poll_filters();
2255 flush_encoders();
2256
2257 term_exit();
2258
2259 /* write the trailer if needed and close file */
2260 for (i = 0; i < nb_output_files; i++) {
2261 os = output_files[i]->ctx;
2262 av_write_trailer(os);
2263 }
2264
2265 /* dump report by using the first video and audio streams */
2266 print_report(1, timer_start);
2267
2268 /* close each encoder */
2269 for (i = 0; i < nb_output_streams; i++) {
2270 ost = output_streams[i];
2271 if (ost->encoding_needed) {
2272 av_freep(&ost->st->codec->stats_in);
2273 avcodec_close(ost->st->codec);
2274 }
2275 }
2276
2277 /* close each decoder */
2278 for (i = 0; i < nb_input_streams; i++) {
2279 ist = input_streams[i];
2280 if (ist->decoding_needed) {
2281 avcodec_close(ist->st->codec);
2282 }
2283 }
2284
2285 /* finished ! */
2286 ret = 0;
2287
2288 fail:
2289 #if HAVE_PTHREADS
2290 free_input_threads();
2291 #endif
2292
2293 if (output_streams) {
2294 for (i = 0; i < nb_output_streams; i++) {
2295 ost = output_streams[i];
2296 if (ost) {
2297 if (ost->stream_copy)
2298 av_freep(&ost->st->codec->extradata);
2299 if (ost->logfile) {
2300 fclose(ost->logfile);
2301 ost->logfile = NULL;
2302 }
2303 av_freep(&ost->st->codec->subtitle_header);
2304 av_free(ost->forced_kf_pts);
2305 av_dict_free(&ost->opts);
2306 }
2307 }
2308 }
2309 return ret;
2310 }
2311
2312 static int64_t getutime(void)
2313 {
2314 #if HAVE_GETRUSAGE
2315 struct rusage rusage;
2316
2317 getrusage(RUSAGE_SELF, &rusage);
2318 return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
2319 #elif HAVE_GETPROCESSTIMES
2320 HANDLE proc;
2321 FILETIME c, e, k, u;
2322 proc = GetCurrentProcess();
2323 GetProcessTimes(proc, &c, &e, &k, &u);
2324 return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
2325 #else
2326 return av_gettime();
2327 #endif
2328 }
2329
2330 static int64_t getmaxrss(void)
2331 {
2332 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
2333 struct rusage rusage;
2334 getrusage(RUSAGE_SELF, &rusage);
2335 return (int64_t)rusage.ru_maxrss * 1024;
2336 #elif HAVE_GETPROCESSMEMORYINFO
2337 HANDLE proc;
2338 PROCESS_MEMORY_COUNTERS memcounters;
2339 proc = GetCurrentProcess();
2340 memcounters.cb = sizeof(memcounters);
2341 GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
2342 return memcounters.PeakPagefileUsage;
2343 #else
2344 return 0;
2345 #endif
2346 }
2347
2348 int main(int argc, char **argv)
2349 {
2350 int ret;
2351 int64_t ti;
2352
2353 atexit(exit_program);
2354
2355 av_log_set_flags(AV_LOG_SKIP_REPEATED);
2356 parse_loglevel(argc, argv, options);
2357
2358 avcodec_register_all();
2359 #if CONFIG_AVDEVICE
2360 avdevice_register_all();
2361 #endif
2362 avfilter_register_all();
2363 av_register_all();
2364 avformat_network_init();
2365
2366 show_banner();
2367
2368 /* parse options and open all input/output files */
2369 ret = avconv_parse_options(argc, argv);
2370 if (ret < 0)
2371 exit(1);
2372
2373 if (nb_output_files <= 0 && nb_input_files == 0) {
2374 show_usage();
2375 av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
2376 exit(1);
2377 }
2378
2379 /* file converter / grab */
2380 if (nb_output_files <= 0) {
2381 fprintf(stderr, "At least one output file must be specified\n");
2382 exit(1);
2383 }
2384
2385 ti = getutime();
2386 if (transcode() < 0)
2387 exit(1);
2388 ti = getutime() - ti;
2389 if (do_benchmark) {
2390 int maxrss = getmaxrss() / 1024;
2391 printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss);
2392 }
2393
2394 exit(0);
2395 return 0;
2396 }
A couple of patches to make building with MPlayer easier