Use avcodec_free_frame() to free AVFrames.
[libav.git] / avconv.c
1 /*
2 * avconv main
3 * Copyright (c) 2000-2011 The libav developers.
4 *
5 * This file is part of Libav.
6 *
7 * Libav is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * Libav is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with Libav; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #include "config.h"
23 #include <ctype.h>
24 #include <string.h>
25 #include <math.h>
26 #include <stdlib.h>
27 #include <errno.h>
28 #include <signal.h>
29 #include <limits.h>
30 #include "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/audioconvert.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/types.h>
57 #include <sys/resource.h>
58 #elif HAVE_GETPROCESSTIMES
59 #include <windows.h>
60 #endif
61 #if HAVE_GETPROCESSMEMORYINFO
62 #include <windows.h>
63 #include <psapi.h>
64 #endif
65
66 #if HAVE_SYS_SELECT_H
67 #include <sys/select.h>
68 #endif
69
70 #if HAVE_PTHREADS
71 #include <pthread.h>
72 #endif
73
74 #include <time.h>
75
76 #include "avconv.h"
77 #include "cmdutils.h"
78
79 #include "libavutil/avassert.h"
80
81 const char program_name[] = "avconv";
82 const int program_birth_year = 2000;
83
84 static FILE *vstats_file;
85
86 static int64_t video_size = 0;
87 static int64_t audio_size = 0;
88 static int64_t extra_size = 0;
89 static int nb_frames_dup = 0;
90 static int nb_frames_drop = 0;
91
92
93
94 #if HAVE_PTHREADS
95 /* signal to input threads that they should exit; set by the main thread */
96 static int transcoding_finished;
97 #endif
98
99 #define DEFAULT_PASS_LOGFILENAME_PREFIX "av2pass"
100
101 InputStream **input_streams = NULL;
102 int nb_input_streams = 0;
103 InputFile **input_files = NULL;
104 int nb_input_files = 0;
105
106 OutputStream **output_streams = NULL;
107 int nb_output_streams = 0;
108 OutputFile **output_files = NULL;
109 int nb_output_files = 0;
110
111 FilterGraph **filtergraphs;
112 int nb_filtergraphs;
113
114 static void term_exit(void)
115 {
116 av_log(NULL, AV_LOG_QUIET, "");
117 }
118
119 static volatile int received_sigterm = 0;
120 static volatile int received_nb_signals = 0;
121
122 static void
123 sigterm_handler(int sig)
124 {
125 received_sigterm = sig;
126 received_nb_signals++;
127 term_exit();
128 }
129
130 static void term_init(void)
131 {
132 signal(SIGINT , sigterm_handler); /* Interrupt (ANSI). */
133 signal(SIGTERM, sigterm_handler); /* Termination (ANSI). */
134 #ifdef SIGXCPU
135 signal(SIGXCPU, sigterm_handler);
136 #endif
137 }
138
139 static int decode_interrupt_cb(void *ctx)
140 {
141 return received_nb_signals > 1;
142 }
143
144 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
145
146 void exit_program(int ret)
147 {
148 int i, j;
149
150 for (i = 0; i < nb_filtergraphs; i++) {
151 avfilter_graph_free(&filtergraphs[i]->graph);
152 for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
153 av_freep(&filtergraphs[i]->inputs[j]->name);
154 av_freep(&filtergraphs[i]->inputs[j]);
155 }
156 av_freep(&filtergraphs[i]->inputs);
157 for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
158 av_freep(&filtergraphs[i]->outputs[j]->name);
159 av_freep(&filtergraphs[i]->outputs[j]);
160 }
161 av_freep(&filtergraphs[i]->outputs);
162 av_freep(&filtergraphs[i]);
163 }
164 av_freep(&filtergraphs);
165
166 /* close files */
167 for (i = 0; i < nb_output_files; i++) {
168 AVFormatContext *s = output_files[i]->ctx;
169 if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
170 avio_close(s->pb);
171 avformat_free_context(s);
172 av_dict_free(&output_files[i]->opts);
173 av_freep(&output_files[i]);
174 }
175 for (i = 0; i < nb_output_streams; i++) {
176 AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
177 while (bsfc) {
178 AVBitStreamFilterContext *next = bsfc->next;
179 av_bitstream_filter_close(bsfc);
180 bsfc = next;
181 }
182 output_streams[i]->bitstream_filters = NULL;
183 avcodec_free_frame(&output_streams[i]->filtered_frame);
184
185 av_freep(&output_streams[i]->forced_keyframes);
186 av_freep(&output_streams[i]->avfilter);
187 av_freep(&output_streams[i]->logfile_prefix);
188 av_freep(&output_streams[i]);
189 }
190 for (i = 0; i < nb_input_files; i++) {
191 avformat_close_input(&input_files[i]->ctx);
192 av_freep(&input_files[i]);
193 }
194 for (i = 0; i < nb_input_streams; i++) {
195 avcodec_free_frame(&input_streams[i]->decoded_frame);
196 av_dict_free(&input_streams[i]->opts);
197 free_buffer_pool(&input_streams[i]->buffer_pool);
198 av_freep(&input_streams[i]->filters);
199 av_freep(&input_streams[i]);
200 }
201
202 if (vstats_file)
203 fclose(vstats_file);
204 av_free(vstats_filename);
205
206 av_freep(&input_streams);
207 av_freep(&input_files);
208 av_freep(&output_streams);
209 av_freep(&output_files);
210
211 uninit_opts();
212
213 avfilter_uninit();
214 avformat_network_deinit();
215
216 if (received_sigterm) {
217 av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
218 (int) received_sigterm);
219 exit (255);
220 }
221
222 exit(ret);
223 }
224
225 void assert_avoptions(AVDictionary *m)
226 {
227 AVDictionaryEntry *t;
228 if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
229 av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
230 exit_program(1);
231 }
232 }
233
234 static void assert_codec_experimental(AVCodecContext *c, int encoder)
235 {
236 const char *codec_string = encoder ? "encoder" : "decoder";
237 AVCodec *codec;
238 if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
239 c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
240 av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
241 "results.\nAdd '-strict experimental' if you want to use it.\n",
242 codec_string, c->codec->name);
243 codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
244 if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
245 av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
246 codec_string, codec->name);
247 exit_program(1);
248 }
249 }
250
251 /**
252 * Update the requested input sample format based on the output sample format.
253 * This is currently only used to request float output from decoders which
254 * support multiple sample formats, one of which is AV_SAMPLE_FMT_FLT.
255 * Ideally this will be removed in the future when decoders do not do format
256 * conversion and only output in their native format.
257 */
258 static void update_sample_fmt(AVCodecContext *dec, AVCodec *dec_codec,
259 AVCodecContext *enc)
260 {
261 /* if sample formats match or a decoder sample format has already been
262 requested, just return */
263 if (enc->sample_fmt == dec->sample_fmt ||
264 dec->request_sample_fmt > AV_SAMPLE_FMT_NONE)
265 return;
266
267 /* if decoder supports more than one output format */
268 if (dec_codec && dec_codec->sample_fmts &&
269 dec_codec->sample_fmts[0] != AV_SAMPLE_FMT_NONE &&
270 dec_codec->sample_fmts[1] != AV_SAMPLE_FMT_NONE) {
271 const enum AVSampleFormat *p;
272 int min_dec = -1, min_inc = -1;
273
274 /* find a matching sample format in the encoder */
275 for (p = dec_codec->sample_fmts; *p != AV_SAMPLE_FMT_NONE; p++) {
276 if (*p == enc->sample_fmt) {
277 dec->request_sample_fmt = *p;
278 return;
279 } else if (*p > enc->sample_fmt) {
280 min_inc = FFMIN(min_inc, *p - enc->sample_fmt);
281 } else
282 min_dec = FFMIN(min_dec, enc->sample_fmt - *p);
283 }
284
285 /* if none match, provide the one that matches quality closest */
286 dec->request_sample_fmt = min_inc > 0 ? enc->sample_fmt + min_inc :
287 enc->sample_fmt - min_dec;
288 }
289 }
290
291 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
292 {
293 AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
294 AVCodecContext *avctx = ost->st->codec;
295 int ret;
296
297 /*
298 * Audio encoders may split the packets -- #frames in != #packets out.
299 * But there is no reordering, so we can limit the number of output packets
300 * by simply dropping them here.
301 * Counting encoded video frames needs to be done separately because of
302 * reordering, see do_video_out()
303 */
304 if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
305 if (ost->frame_number >= ost->max_frames) {
306 av_free_packet(pkt);
307 return;
308 }
309 ost->frame_number++;
310 }
311
312 while (bsfc) {
313 AVPacket new_pkt = *pkt;
314 int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
315 &new_pkt.data, &new_pkt.size,
316 pkt->data, pkt->size,
317 pkt->flags & AV_PKT_FLAG_KEY);
318 if (a > 0) {
319 av_free_packet(pkt);
320 new_pkt.destruct = av_destruct_packet;
321 } else if (a < 0) {
322 av_log(NULL, AV_LOG_ERROR, "%s failed for stream %d, codec %s",
323 bsfc->filter->name, pkt->stream_index,
324 avctx->codec ? avctx->codec->name : "copy");
325 print_error("", a);
326 if (exit_on_error)
327 exit_program(1);
328 }
329 *pkt = new_pkt;
330
331 bsfc = bsfc->next;
332 }
333
334 pkt->stream_index = ost->index;
335 ret = av_interleaved_write_frame(s, pkt);
336 if (ret < 0) {
337 print_error("av_interleaved_write_frame()", ret);
338 exit_program(1);
339 }
340 }
341
342 static int check_recording_time(OutputStream *ost)
343 {
344 OutputFile *of = output_files[ost->file_index];
345
346 if (of->recording_time != INT64_MAX &&
347 av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
348 AV_TIME_BASE_Q) >= 0) {
349 ost->finished = 1;
350 return 0;
351 }
352 return 1;
353 }
354
355 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
356 AVFrame *frame)
357 {
358 AVCodecContext *enc = ost->st->codec;
359 AVPacket pkt;
360 int got_packet = 0;
361
362 av_init_packet(&pkt);
363 pkt.data = NULL;
364 pkt.size = 0;
365
366 if (!check_recording_time(ost))
367 return;
368
369 if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
370 frame->pts = ost->sync_opts;
371 ost->sync_opts = frame->pts + frame->nb_samples;
372
373 if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
374 av_log(NULL, AV_LOG_FATAL, "Audio encoding failed\n");
375 exit_program(1);
376 }
377
378 if (got_packet) {
379 if (pkt.pts != AV_NOPTS_VALUE)
380 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
381 if (pkt.dts != AV_NOPTS_VALUE)
382 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
383 if (pkt.duration > 0)
384 pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
385
386 write_frame(s, &pkt, ost);
387
388 audio_size += pkt.size;
389 }
390 }
391
392 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
393 {
394 AVCodecContext *dec;
395 AVPicture *picture2;
396 AVPicture picture_tmp;
397 uint8_t *buf = 0;
398
399 dec = ist->st->codec;
400
401 /* deinterlace : must be done before any resize */
402 if (do_deinterlace) {
403 int size;
404
405 /* create temporary picture */
406 size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
407 buf = av_malloc(size);
408 if (!buf)
409 return;
410
411 picture2 = &picture_tmp;
412 avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
413
414 if (avpicture_deinterlace(picture2, picture,
415 dec->pix_fmt, dec->width, dec->height) < 0) {
416 /* if error, do not deinterlace */
417 av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
418 av_free(buf);
419 buf = NULL;
420 picture2 = picture;
421 }
422 } else {
423 picture2 = picture;
424 }
425
426 if (picture != picture2)
427 *picture = *picture2;
428 *bufp = buf;
429 }
430
431 static void do_subtitle_out(AVFormatContext *s,
432 OutputStream *ost,
433 InputStream *ist,
434 AVSubtitle *sub,
435 int64_t pts)
436 {
437 static uint8_t *subtitle_out = NULL;
438 int subtitle_out_max_size = 1024 * 1024;
439 int subtitle_out_size, nb, i;
440 AVCodecContext *enc;
441 AVPacket pkt;
442
443 if (pts == AV_NOPTS_VALUE) {
444 av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
445 if (exit_on_error)
446 exit_program(1);
447 return;
448 }
449
450 enc = ost->st->codec;
451
452 if (!subtitle_out) {
453 subtitle_out = av_malloc(subtitle_out_max_size);
454 }
455
456 /* Note: DVB subtitle need one packet to draw them and one other
457 packet to clear them */
458 /* XXX: signal it in the codec context ? */
459 if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
460 nb = 2;
461 else
462 nb = 1;
463
464 for (i = 0; i < nb; i++) {
465 ost->sync_opts = av_rescale_q(pts, ist->st->time_base, enc->time_base);
466 if (!check_recording_time(ost))
467 return;
468
469 sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
470 // start_display_time is required to be 0
471 sub->pts += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
472 sub->end_display_time -= sub->start_display_time;
473 sub->start_display_time = 0;
474 subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
475 subtitle_out_max_size, sub);
476 if (subtitle_out_size < 0) {
477 av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
478 exit_program(1);
479 }
480
481 av_init_packet(&pkt);
482 pkt.data = subtitle_out;
483 pkt.size = subtitle_out_size;
484 pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
485 if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
486 /* XXX: the pts correction is handled here. Maybe handling
487 it in the codec would be better */
488 if (i == 0)
489 pkt.pts += 90 * sub->start_display_time;
490 else
491 pkt.pts += 90 * sub->end_display_time;
492 }
493 write_frame(s, &pkt, ost);
494 }
495 }
496
497 static void do_video_out(AVFormatContext *s,
498 OutputStream *ost,
499 AVFrame *in_picture,
500 int *frame_size, float quality)
501 {
502 int ret, format_video_sync;
503 AVPacket pkt;
504 AVCodecContext *enc = ost->st->codec;
505
506 *frame_size = 0;
507
508 format_video_sync = video_sync_method;
509 if (format_video_sync == VSYNC_AUTO)
510 format_video_sync = (s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH :
511 (s->oformat->flags & AVFMT_VARIABLE_FPS) ? VSYNC_VFR : VSYNC_CFR;
512 if (format_video_sync != VSYNC_PASSTHROUGH &&
513 ost->frame_number &&
514 in_picture->pts != AV_NOPTS_VALUE &&
515 in_picture->pts < ost->sync_opts) {
516 nb_frames_drop++;
517 av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
518 return;
519 }
520
521 if (in_picture->pts == AV_NOPTS_VALUE)
522 in_picture->pts = ost->sync_opts;
523 ost->sync_opts = in_picture->pts;
524
525
526 if (!ost->frame_number)
527 ost->first_pts = in_picture->pts;
528
529 av_init_packet(&pkt);
530 pkt.data = NULL;
531 pkt.size = 0;
532
533 if (!check_recording_time(ost) ||
534 ost->frame_number >= ost->max_frames)
535 return;
536
537 if (s->oformat->flags & AVFMT_RAWPICTURE &&
538 enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
539 /* raw pictures are written as AVPicture structure to
540 avoid any copies. We support temporarily the older
541 method. */
542 enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
543 enc->coded_frame->top_field_first = in_picture->top_field_first;
544 pkt.data = (uint8_t *)in_picture;
545 pkt.size = sizeof(AVPicture);
546 pkt.pts = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
547 pkt.flags |= AV_PKT_FLAG_KEY;
548
549 write_frame(s, &pkt, ost);
550 } else {
551 int got_packet;
552 AVFrame big_picture;
553
554 big_picture = *in_picture;
555 /* better than nothing: use input picture interlaced
556 settings */
557 big_picture.interlaced_frame = in_picture->interlaced_frame;
558 if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
559 if (ost->top_field_first == -1)
560 big_picture.top_field_first = in_picture->top_field_first;
561 else
562 big_picture.top_field_first = !!ost->top_field_first;
563 }
564
565 /* handles same_quant here. This is not correct because it may
566 not be a global option */
567 big_picture.quality = quality;
568 if (!enc->me_threshold)
569 big_picture.pict_type = 0;
570 if (ost->forced_kf_index < ost->forced_kf_count &&
571 big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
572 big_picture.pict_type = AV_PICTURE_TYPE_I;
573 ost->forced_kf_index++;
574 }
575 ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
576 if (ret < 0) {
577 av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
578 exit_program(1);
579 }
580
581 if (got_packet) {
582 if (pkt.pts != AV_NOPTS_VALUE)
583 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
584 if (pkt.dts != AV_NOPTS_VALUE)
585 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
586
587 write_frame(s, &pkt, ost);
588 *frame_size = pkt.size;
589 video_size += pkt.size;
590
591 /* if two pass, output log */
592 if (ost->logfile && enc->stats_out) {
593 fprintf(ost->logfile, "%s", enc->stats_out);
594 }
595 }
596 }
597 ost->sync_opts++;
598 /*
599 * For video, number of frames in == number of packets out.
600 * But there may be reordering, so we can't throw away frames on encoder
601 * flush, we need to limit them here, before they go into encoder.
602 */
603 ost->frame_number++;
604 }
605
606 static double psnr(double d)
607 {
608 return -10.0 * log(d) / log(10.0);
609 }
610
611 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
612 int frame_size)
613 {
614 AVCodecContext *enc;
615 int frame_number;
616 double ti1, bitrate, avg_bitrate;
617
618 /* this is executed just the first time do_video_stats is called */
619 if (!vstats_file) {
620 vstats_file = fopen(vstats_filename, "w");
621 if (!vstats_file) {
622 perror("fopen");
623 exit_program(1);
624 }
625 }
626
627 enc = ost->st->codec;
628 if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
629 frame_number = ost->frame_number;
630 fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
631 if (enc->flags&CODEC_FLAG_PSNR)
632 fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
633
634 fprintf(vstats_file,"f_size= %6d ", frame_size);
635 /* compute pts value */
636 ti1 = ost->sync_opts * av_q2d(enc->time_base);
637 if (ti1 < 0.01)
638 ti1 = 0.01;
639
640 bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
641 avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
642 fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
643 (double)video_size / 1024, ti1, bitrate, avg_bitrate);
644 fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
645 }
646 }
647
648 /**
649 * Read one frame for lavfi output for ost and encode it.
650 */
651 static int poll_filter(OutputStream *ost)
652 {
653 OutputFile *of = output_files[ost->file_index];
654 AVFilterBufferRef *picref;
655 AVFrame *filtered_frame = NULL;
656 int frame_size, ret;
657
658 if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
659 return AVERROR(ENOMEM);
660 } else
661 avcodec_get_frame_defaults(ost->filtered_frame);
662 filtered_frame = ost->filtered_frame;
663
664 if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
665 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
666 ret = av_buffersink_read_samples(ost->filter->filter, &picref,
667 ost->st->codec->frame_size);
668 else
669 ret = av_buffersink_read(ost->filter->filter, &picref);
670
671 if (ret < 0)
672 return ret;
673
674 avfilter_copy_buf_props(filtered_frame, picref);
675 if (picref->pts != AV_NOPTS_VALUE) {
676 filtered_frame->pts = av_rescale_q(picref->pts,
677 ost->filter->filter->inputs[0]->time_base,
678 ost->st->codec->time_base) -
679 av_rescale_q(of->start_time,
680 AV_TIME_BASE_Q,
681 ost->st->codec->time_base);
682
683 if (of->start_time && filtered_frame->pts < 0) {
684 avfilter_unref_buffer(picref);
685 return 0;
686 }
687 }
688
689 switch (ost->filter->filter->inputs[0]->type) {
690 case AVMEDIA_TYPE_VIDEO:
691 if (!ost->frame_aspect_ratio)
692 ost->st->codec->sample_aspect_ratio = picref->video->pixel_aspect;
693
694 do_video_out(of->ctx, ost, filtered_frame, &frame_size,
695 same_quant ? ost->last_quality :
696 ost->st->codec->global_quality);
697 if (vstats_filename && frame_size)
698 do_video_stats(of->ctx, ost, frame_size);
699 break;
700 case AVMEDIA_TYPE_AUDIO:
701 do_audio_out(of->ctx, ost, filtered_frame);
702 break;
703 default:
704 // TODO support subtitle filters
705 av_assert0(0);
706 }
707
708 avfilter_unref_buffer(picref);
709
710 return 0;
711 }
712
713 /**
714 * Read as many frames from possible from lavfi and encode them.
715 *
716 * Always read from the active stream with the lowest timestamp. If no frames
717 * are available for it then return EAGAIN and wait for more input. This way we
718 * can use lavfi sources that generate unlimited amount of frames without memory
719 * usage exploding.
720 */
721 static int poll_filters(void)
722 {
723 int i, j, ret = 0;
724
725 while (ret >= 0 && !received_sigterm) {
726 OutputStream *ost = NULL;
727 int64_t min_pts = INT64_MAX;
728
729 /* choose output stream with the lowest timestamp */
730 for (i = 0; i < nb_output_streams; i++) {
731 int64_t pts = output_streams[i]->sync_opts;
732
733 if (!output_streams[i]->filter || output_streams[i]->finished)
734 continue;
735
736 pts = av_rescale_q(pts, output_streams[i]->st->codec->time_base,
737 AV_TIME_BASE_Q);
738 if (pts < min_pts) {
739 min_pts = pts;
740 ost = output_streams[i];
741 }
742 }
743
744 if (!ost)
745 break;
746
747 ret = poll_filter(ost);
748
749 if (ret == AVERROR_EOF) {
750 OutputFile *of = output_files[ost->file_index];
751
752 ost->finished = 1;
753
754 if (of->shortest) {
755 for (j = 0; j < of->ctx->nb_streams; j++)
756 output_streams[of->ost_index + j]->finished = 1;
757 }
758
759 ret = 0;
760 } else if (ret == AVERROR(EAGAIN))
761 return 0;
762 }
763
764 return ret;
765 }
766
767 static void print_report(int is_last_report, int64_t timer_start)
768 {
769 char buf[1024];
770 OutputStream *ost;
771 AVFormatContext *oc;
772 int64_t total_size;
773 AVCodecContext *enc;
774 int frame_number, vid, i;
775 double bitrate, ti1, pts;
776 static int64_t last_time = -1;
777 static int qp_histogram[52];
778
779 if (!print_stats && !is_last_report)
780 return;
781
782 if (!is_last_report) {
783 int64_t cur_time;
784 /* display the report every 0.5 seconds */
785 cur_time = av_gettime();
786 if (last_time == -1) {
787 last_time = cur_time;
788 return;
789 }
790 if ((cur_time - last_time) < 500000)
791 return;
792 last_time = cur_time;
793 }
794
795
796 oc = output_files[0]->ctx;
797
798 total_size = avio_size(oc->pb);
799 if (total_size < 0) // FIXME improve avio_size() so it works with non seekable output too
800 total_size = avio_tell(oc->pb);
801
802 buf[0] = '\0';
803 ti1 = 1e10;
804 vid = 0;
805 for (i = 0; i < nb_output_streams; i++) {
806 float q = -1;
807 ost = output_streams[i];
808 enc = ost->st->codec;
809 if (!ost->stream_copy && enc->coded_frame)
810 q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
811 if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
812 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
813 }
814 if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
815 float t = (av_gettime() - timer_start) / 1000000.0;
816
817 frame_number = ost->frame_number;
818 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
819 frame_number, (t > 1) ? (int)(frame_number / t + 0.5) : 0, q);
820 if (is_last_report)
821 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
822 if (qp_hist) {
823 int j;
824 int qp = lrintf(q);
825 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
826 qp_histogram[qp]++;
827 for (j = 0; j < 32; j++)
828 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
829 }
830 if (enc->flags&CODEC_FLAG_PSNR) {
831 int j;
832 double error, error_sum = 0;
833 double scale, scale_sum = 0;
834 char type[3] = { 'Y','U','V' };
835 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
836 for (j = 0; j < 3; j++) {
837 if (is_last_report) {
838 error = enc->error[j];
839 scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
840 } else {
841 error = enc->coded_frame->error[j];
842 scale = enc->width * enc->height * 255.0 * 255.0;
843 }
844 if (j)
845 scale /= 4;
846 error_sum += error;
847 scale_sum += scale;
848 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error / scale));
849 }
850 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
851 }
852 vid = 1;
853 }
854 /* compute min output value */
855 pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
856 if ((pts < ti1) && (pts > 0))
857 ti1 = pts;
858 }
859 if (ti1 < 0.01)
860 ti1 = 0.01;
861
862 bitrate = (double)(total_size * 8) / ti1 / 1000.0;
863
864 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
865 "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
866 (double)total_size / 1024, ti1, bitrate);
867
868 if (nb_frames_dup || nb_frames_drop)
869 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
870 nb_frames_dup, nb_frames_drop);
871
872 av_log(NULL, AV_LOG_INFO, "%s \r", buf);
873
874 fflush(stderr);
875
876 if (is_last_report) {
877 int64_t raw= audio_size + video_size + extra_size;
878 av_log(NULL, AV_LOG_INFO, "\n");
879 av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
880 video_size / 1024.0,
881 audio_size / 1024.0,
882 extra_size / 1024.0,
883 100.0 * (total_size - raw) / raw
884 );
885 }
886 }
887
888 static void flush_encoders(void)
889 {
890 int i, ret;
891
892 for (i = 0; i < nb_output_streams; i++) {
893 OutputStream *ost = output_streams[i];
894 AVCodecContext *enc = ost->st->codec;
895 AVFormatContext *os = output_files[ost->file_index]->ctx;
896 int stop_encoding = 0;
897
898 if (!ost->encoding_needed)
899 continue;
900
901 if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
902 continue;
903 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
904 continue;
905
906 for (;;) {
907 int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
908 const char *desc;
909 int64_t *size;
910
911 switch (ost->st->codec->codec_type) {
912 case AVMEDIA_TYPE_AUDIO:
913 encode = avcodec_encode_audio2;
914 desc = "Audio";
915 size = &audio_size;
916 break;
917 case AVMEDIA_TYPE_VIDEO:
918 encode = avcodec_encode_video2;
919 desc = "Video";
920 size = &video_size;
921 break;
922 default:
923 stop_encoding = 1;
924 }
925
926 if (encode) {
927 AVPacket pkt;
928 int got_packet;
929 av_init_packet(&pkt);
930 pkt.data = NULL;
931 pkt.size = 0;
932
933 ret = encode(enc, &pkt, NULL, &got_packet);
934 if (ret < 0) {
935 av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
936 exit_program(1);
937 }
938 *size += ret;
939 if (ost->logfile && enc->stats_out) {
940 fprintf(ost->logfile, "%s", enc->stats_out);
941 }
942 if (!got_packet) {
943 stop_encoding = 1;
944 break;
945 }
946 if (pkt.pts != AV_NOPTS_VALUE)
947 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
948 if (pkt.dts != AV_NOPTS_VALUE)
949 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
950 write_frame(os, &pkt, ost);
951 }
952
953 if (stop_encoding)
954 break;
955 }
956 }
957 }
958
959 /*
960 * Check whether a packet from ist should be written into ost at this time
961 */
962 static int check_output_constraints(InputStream *ist, OutputStream *ost)
963 {
964 OutputFile *of = output_files[ost->file_index];
965 int ist_index = input_files[ist->file_index]->ist_index + ist->st->index;
966
967 if (ost->source_index != ist_index)
968 return 0;
969
970 if (of->start_time && ist->last_dts < of->start_time)
971 return 0;
972
973 return 1;
974 }
975
976 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
977 {
978 OutputFile *of = output_files[ost->file_index];
979 int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
980 AVPacket opkt;
981
982 av_init_packet(&opkt);
983
984 if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
985 !ost->copy_initial_nonkeyframes)
986 return;
987
988 if (of->recording_time != INT64_MAX &&
989 ist->last_dts >= of->recording_time + of->start_time) {
990 ost->finished = 1;
991 return;
992 }
993
994 /* force the input stream PTS */
995 if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
996 audio_size += pkt->size;
997 else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
998 video_size += pkt->size;
999 ost->sync_opts++;
1000 }
1001
1002 if (pkt->pts != AV_NOPTS_VALUE)
1003 opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1004 else
1005 opkt.pts = AV_NOPTS_VALUE;
1006
1007 if (pkt->dts == AV_NOPTS_VALUE)
1008 opkt.dts = av_rescale_q(ist->last_dts, AV_TIME_BASE_Q, ost->st->time_base);
1009 else
1010 opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1011 opkt.dts -= ost_tb_start_time;
1012
1013 opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1014 opkt.flags = pkt->flags;
1015
1016 // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1017 if ( ost->st->codec->codec_id != AV_CODEC_ID_H264
1018 && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1019 && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1020 && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1021 ) {
1022 if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1023 opkt.destruct = av_destruct_packet;
1024 } else {
1025 opkt.data = pkt->data;
1026 opkt.size = pkt->size;
1027 }
1028
1029 write_frame(of->ctx, &opkt, ost);
1030 ost->st->codec->frame_number++;
1031 av_free_packet(&opkt);
1032 }
1033
1034 static void rate_emu_sleep(InputStream *ist)
1035 {
1036 if (input_files[ist->file_index]->rate_emu) {
1037 int64_t pts = av_rescale(ist->last_dts, 1000000, AV_TIME_BASE);
1038 int64_t now = av_gettime() - ist->start;
1039 if (pts > now)
1040 av_usleep(pts - now);
1041 }
1042 }
1043
1044 int guess_input_channel_layout(InputStream *ist)
1045 {
1046 AVCodecContext *dec = ist->st->codec;
1047
1048 if (!dec->channel_layout) {
1049 char layout_name[256];
1050
1051 dec->channel_layout = av_get_default_channel_layout(dec->channels);
1052 if (!dec->channel_layout)
1053 return 0;
1054 av_get_channel_layout_string(layout_name, sizeof(layout_name),
1055 dec->channels, dec->channel_layout);
1056 av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for Input Stream "
1057 "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1058 }
1059 return 1;
1060 }
1061
1062 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1063 {
1064 AVFrame *decoded_frame;
1065 AVCodecContext *avctx = ist->st->codec;
1066 int bps = av_get_bytes_per_sample(ist->st->codec->sample_fmt);
1067 int i, ret, resample_changed;
1068
1069 if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1070 return AVERROR(ENOMEM);
1071 else
1072 avcodec_get_frame_defaults(ist->decoded_frame);
1073 decoded_frame = ist->decoded_frame;
1074
1075 ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1076 if (!*got_output || ret < 0) {
1077 if (!pkt->size) {
1078 for (i = 0; i < ist->nb_filters; i++)
1079 av_buffersrc_buffer(ist->filters[i]->filter, NULL);
1080 }
1081 return ret;
1082 }
1083
1084 /* if the decoder provides a pts, use it instead of the last packet pts.
1085 the decoder could be delaying output by a packet or more. */
1086 if (decoded_frame->pts != AV_NOPTS_VALUE)
1087 ist->next_dts = decoded_frame->pts;
1088 else if (pkt->pts != AV_NOPTS_VALUE) {
1089 decoded_frame->pts = pkt->pts;
1090 pkt->pts = AV_NOPTS_VALUE;
1091 }
1092
1093 // preprocess audio (volume)
1094 if (audio_volume != 256) {
1095 int decoded_data_size = decoded_frame->nb_samples * avctx->channels * bps;
1096 void *samples = decoded_frame->data[0];
1097 switch (avctx->sample_fmt) {
1098 case AV_SAMPLE_FMT_U8:
1099 {
1100 uint8_t *volp = samples;
1101 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1102 int v = (((*volp - 128) * audio_volume + 128) >> 8) + 128;
1103 *volp++ = av_clip_uint8(v);
1104 }
1105 break;
1106 }
1107 case AV_SAMPLE_FMT_S16:
1108 {
1109 int16_t *volp = samples;
1110 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1111 int v = ((*volp) * audio_volume + 128) >> 8;
1112 *volp++ = av_clip_int16(v);
1113 }
1114 break;
1115 }
1116 case AV_SAMPLE_FMT_S32:
1117 {
1118 int32_t *volp = samples;
1119 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1120 int64_t v = (((int64_t)*volp * audio_volume + 128) >> 8);
1121 *volp++ = av_clipl_int32(v);
1122 }
1123 break;
1124 }
1125 case AV_SAMPLE_FMT_FLT:
1126 {
1127 float *volp = samples;
1128 float scale = audio_volume / 256.f;
1129 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1130 *volp++ *= scale;
1131 }
1132 break;
1133 }
1134 case AV_SAMPLE_FMT_DBL:
1135 {
1136 double *volp = samples;
1137 double scale = audio_volume / 256.;
1138 for (i = 0; i < (decoded_data_size / sizeof(*volp)); i++) {
1139 *volp++ *= scale;
1140 }
1141 break;
1142 }
1143 default:
1144 av_log(NULL, AV_LOG_FATAL,
1145 "Audio volume adjustment on sample format %s is not supported.\n",
1146 av_get_sample_fmt_name(ist->st->codec->sample_fmt));
1147 exit_program(1);
1148 }
1149 }
1150
1151 rate_emu_sleep(ist);
1152
1153 resample_changed = ist->resample_sample_fmt != decoded_frame->format ||
1154 ist->resample_channels != avctx->channels ||
1155 ist->resample_channel_layout != decoded_frame->channel_layout ||
1156 ist->resample_sample_rate != decoded_frame->sample_rate;
1157 if (resample_changed) {
1158 char layout1[64], layout2[64];
1159
1160 if (!guess_input_channel_layout(ist)) {
1161 av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1162 "layout for Input Stream #%d.%d\n", ist->file_index,
1163 ist->st->index);
1164 exit_program(1);
1165 }
1166 decoded_frame->channel_layout = avctx->channel_layout;
1167
1168 av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1169 ist->resample_channel_layout);
1170 av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1171 decoded_frame->channel_layout);
1172
1173 av_log(NULL, AV_LOG_INFO,
1174 "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",
1175 ist->file_index, ist->st->index,
1176 ist->resample_sample_rate, av_get_sample_fmt_name(ist->resample_sample_fmt),
1177 ist->resample_channels, layout1,
1178 decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1179 avctx->channels, layout2);
1180
1181 ist->resample_sample_fmt = decoded_frame->format;
1182 ist->resample_sample_rate = decoded_frame->sample_rate;
1183 ist->resample_channel_layout = decoded_frame->channel_layout;
1184 ist->resample_channels = avctx->channels;
1185
1186 for (i = 0; i < nb_filtergraphs; i++)
1187 if (ist_in_filtergraph(filtergraphs[i], ist) &&
1188 configure_filtergraph(filtergraphs[i]) < 0) {
1189 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1190 exit_program(1);
1191 }
1192 }
1193
1194 if (decoded_frame->pts != AV_NOPTS_VALUE)
1195 decoded_frame->pts = av_rescale_q(decoded_frame->pts,
1196 ist->st->time_base,
1197 (AVRational){1, ist->st->codec->sample_rate});
1198 for (i = 0; i < ist->nb_filters; i++)
1199 av_buffersrc_write_frame(ist->filters[i]->filter, decoded_frame);
1200
1201 return ret;
1202 }
1203
1204 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1205 {
1206 AVFrame *decoded_frame;
1207 void *buffer_to_free = NULL;
1208 int i, ret = 0, resample_changed;
1209 float quality;
1210
1211 if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1212 return AVERROR(ENOMEM);
1213 else
1214 avcodec_get_frame_defaults(ist->decoded_frame);
1215 decoded_frame = ist->decoded_frame;
1216
1217 ret = avcodec_decode_video2(ist->st->codec,
1218 decoded_frame, got_output, pkt);
1219 if (!*got_output || ret < 0) {
1220 if (!pkt->size) {
1221 for (i = 0; i < ist->nb_filters; i++)
1222 av_buffersrc_buffer(ist->filters[i]->filter, NULL);
1223 }
1224 return ret;
1225 }
1226
1227 quality = same_quant ? decoded_frame->quality : 0;
1228 decoded_frame->pts = guess_correct_pts(&ist->pts_ctx, decoded_frame->pkt_pts,
1229 decoded_frame->pkt_dts);
1230 pkt->size = 0;
1231 pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1232
1233 rate_emu_sleep(ist);
1234
1235 if (ist->st->sample_aspect_ratio.num)
1236 decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1237
1238 resample_changed = ist->resample_width != decoded_frame->width ||
1239 ist->resample_height != decoded_frame->height ||
1240 ist->resample_pix_fmt != decoded_frame->format;
1241 if (resample_changed) {
1242 av_log(NULL, AV_LOG_INFO,
1243 "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1244 ist->file_index, ist->st->index,
1245 ist->resample_width, ist->resample_height, av_get_pix_fmt_name(ist->resample_pix_fmt),
1246 decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1247
1248 ret = poll_filters();
1249 if (ret < 0 && (ret != AVERROR_EOF && ret != AVERROR(EAGAIN)))
1250 av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
1251
1252 ist->resample_width = decoded_frame->width;
1253 ist->resample_height = decoded_frame->height;
1254 ist->resample_pix_fmt = decoded_frame->format;
1255
1256 for (i = 0; i < nb_filtergraphs; i++)
1257 if (ist_in_filtergraph(filtergraphs[i], ist) &&
1258 configure_filtergraph(filtergraphs[i]) < 0) {
1259 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1260 exit_program(1);
1261 }
1262 }
1263
1264 for (i = 0; i < ist->nb_filters; i++) {
1265 // XXX what an ugly hack
1266 if (ist->filters[i]->graph->nb_outputs == 1)
1267 ist->filters[i]->graph->outputs[0]->ost->last_quality = quality;
1268
1269 if (ist->st->codec->codec->capabilities & CODEC_CAP_DR1) {
1270 FrameBuffer *buf = decoded_frame->opaque;
1271 AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1272 decoded_frame->data, decoded_frame->linesize,
1273 AV_PERM_READ | AV_PERM_PRESERVE,
1274 ist->st->codec->width, ist->st->codec->height,
1275 ist->st->codec->pix_fmt);
1276
1277 avfilter_copy_frame_props(fb, decoded_frame);
1278 fb->buf->priv = buf;
1279 fb->buf->free = filter_release_buffer;
1280
1281 buf->refcount++;
1282 av_buffersrc_buffer(ist->filters[i]->filter, fb);
1283 } else
1284 av_buffersrc_write_frame(ist->filters[i]->filter, decoded_frame);
1285 }
1286
1287 av_free(buffer_to_free);
1288 return ret;
1289 }
1290
1291 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1292 {
1293 AVSubtitle subtitle;
1294 int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1295 &subtitle, got_output, pkt);
1296 if (ret < 0)
1297 return ret;
1298 if (!*got_output)
1299 return ret;
1300
1301 rate_emu_sleep(ist);
1302
1303 for (i = 0; i < nb_output_streams; i++) {
1304 OutputStream *ost = output_streams[i];
1305
1306 if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1307 continue;
1308
1309 do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pkt->pts);
1310 }
1311
1312 avsubtitle_free(&subtitle);
1313 return ret;
1314 }
1315
1316 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1317 static int output_packet(InputStream *ist, const AVPacket *pkt)
1318 {
1319 int i;
1320 int got_output;
1321 AVPacket avpkt;
1322
1323 if (ist->next_dts == AV_NOPTS_VALUE)
1324 ist->next_dts = ist->last_dts;
1325
1326 if (pkt == NULL) {
1327 /* EOF handling */
1328 av_init_packet(&avpkt);
1329 avpkt.data = NULL;
1330 avpkt.size = 0;
1331 goto handle_eof;
1332 } else {
1333 avpkt = *pkt;
1334 }
1335
1336 if (pkt->dts != AV_NOPTS_VALUE)
1337 ist->next_dts = ist->last_dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1338
1339 // while we have more to decode or while the decoder did output something on EOF
1340 while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1341 int ret = 0;
1342 handle_eof:
1343
1344 ist->last_dts = ist->next_dts;
1345
1346 if (avpkt.size && avpkt.size != pkt->size) {
1347 av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1348 "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1349 ist->showed_multi_packet_warning = 1;
1350 }
1351
1352 switch (ist->st->codec->codec_type) {
1353 case AVMEDIA_TYPE_AUDIO:
1354 ret = decode_audio (ist, &avpkt, &got_output);
1355 break;
1356 case AVMEDIA_TYPE_VIDEO:
1357 ret = decode_video (ist, &avpkt, &got_output);
1358 if (avpkt.duration)
1359 ist->next_dts += av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1360 else if (ist->st->avg_frame_rate.num)
1361 ist->next_dts += av_rescale_q(1, av_inv_q(ist->st->avg_frame_rate),
1362 AV_TIME_BASE_Q);
1363 else if (ist->st->codec->time_base.num != 0) {
1364 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 :
1365 ist->st->codec->ticks_per_frame;
1366 ist->next_dts += av_rescale_q(ticks, ist->st->codec->time_base, AV_TIME_BASE_Q);
1367 }
1368 break;
1369 case AVMEDIA_TYPE_SUBTITLE:
1370 ret = transcode_subtitles(ist, &avpkt, &got_output);
1371 break;
1372 default:
1373 return -1;
1374 }
1375
1376 if (ret < 0)
1377 return ret;
1378 // touch data and size only if not EOF
1379 if (pkt) {
1380 avpkt.data += ret;
1381 avpkt.size -= ret;
1382 }
1383 if (!got_output) {
1384 continue;
1385 }
1386 }
1387
1388 /* handle stream copy */
1389 if (!ist->decoding_needed) {
1390 rate_emu_sleep(ist);
1391 ist->last_dts = ist->next_dts;
1392 switch (ist->st->codec->codec_type) {
1393 case AVMEDIA_TYPE_AUDIO:
1394 ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1395 ist->st->codec->sample_rate;
1396 break;
1397 case AVMEDIA_TYPE_VIDEO:
1398 if (ist->st->codec->time_base.num != 0) {
1399 int ticks = ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1400 ist->next_dts += ((int64_t)AV_TIME_BASE *
1401 ist->st->codec->time_base.num * ticks) /
1402 ist->st->codec->time_base.den;
1403 }
1404 break;
1405 }
1406 }
1407 for (i = 0; pkt && i < nb_output_streams; i++) {
1408 OutputStream *ost = output_streams[i];
1409
1410 if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1411 continue;
1412
1413 do_streamcopy(ist, ost, pkt);
1414 }
1415
1416 return 0;
1417 }
1418
1419 static void print_sdp(void)
1420 {
1421 char sdp[2048];
1422 int i;
1423 AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1424
1425 if (!avc)
1426 exit_program(1);
1427 for (i = 0; i < nb_output_files; i++)
1428 avc[i] = output_files[i]->ctx;
1429
1430 av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1431 printf("SDP:\n%s\n", sdp);
1432 fflush(stdout);
1433 av_freep(&avc);
1434 }
1435
1436 static int init_input_stream(int ist_index, char *error, int error_len)
1437 {
1438 int i;
1439 InputStream *ist = input_streams[ist_index];
1440 if (ist->decoding_needed) {
1441 AVCodec *codec = ist->dec;
1442 if (!codec) {
1443 snprintf(error, error_len, "Decoder (codec id %d) not found for input stream #%d:%d",
1444 ist->st->codec->codec_id, ist->file_index, ist->st->index);
1445 return AVERROR(EINVAL);
1446 }
1447
1448 /* update requested sample format for the decoder based on the
1449 corresponding encoder sample format */
1450 for (i = 0; i < nb_output_streams; i++) {
1451 OutputStream *ost = output_streams[i];
1452 if (ost->source_index == ist_index) {
1453 update_sample_fmt(ist->st->codec, codec, ost->st->codec);
1454 break;
1455 }
1456 }
1457
1458 if (codec->type == AVMEDIA_TYPE_VIDEO && codec->capabilities & CODEC_CAP_DR1) {
1459 ist->st->codec->get_buffer = codec_get_buffer;
1460 ist->st->codec->release_buffer = codec_release_buffer;
1461 ist->st->codec->opaque = &ist->buffer_pool;
1462 }
1463
1464 if (!av_dict_get(ist->opts, "threads", NULL, 0))
1465 av_dict_set(&ist->opts, "threads", "auto", 0);
1466 if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
1467 snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1468 ist->file_index, ist->st->index);
1469 return AVERROR(EINVAL);
1470 }
1471 assert_codec_experimental(ist->st->codec, 0);
1472 assert_avoptions(ist->opts);
1473 }
1474
1475 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;
1476 ist->next_dts = AV_NOPTS_VALUE;
1477 init_pts_correction(&ist->pts_ctx);
1478 ist->is_start = 1;
1479
1480 return 0;
1481 }
1482
1483 static InputStream *get_input_stream(OutputStream *ost)
1484 {
1485 if (ost->source_index >= 0)
1486 return input_streams[ost->source_index];
1487
1488 if (ost->filter) {
1489 FilterGraph *fg = ost->filter->graph;
1490 int i;
1491
1492 for (i = 0; i < fg->nb_inputs; i++)
1493 if (fg->inputs[i]->ist->st->codec->codec_type == ost->st->codec->codec_type)
1494 return fg->inputs[i]->ist;
1495 }
1496
1497 return NULL;
1498 }
1499
1500 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1501 AVCodecContext *avctx)
1502 {
1503 char *p;
1504 int n = 1, i;
1505 int64_t t;
1506
1507 for (p = kf; *p; p++)
1508 if (*p == ',')
1509 n++;
1510 ost->forced_kf_count = n;
1511 ost->forced_kf_pts = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1512 if (!ost->forced_kf_pts) {
1513 av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1514 exit_program(1);
1515 }
1516
1517 p = kf;
1518 for (i = 0; i < n; i++) {
1519 char *next = strchr(p, ',');
1520
1521 if (next)
1522 *next++ = 0;
1523
1524 t = parse_time_or_die("force_key_frames", p, 1);
1525 ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1526
1527 p = next;
1528 }
1529 }
1530
1531 static int transcode_init(void)
1532 {
1533 int ret = 0, i, j, k;
1534 AVFormatContext *oc;
1535 AVCodecContext *codec;
1536 OutputStream *ost;
1537 InputStream *ist;
1538 char error[1024];
1539 int want_sdp = 1;
1540
1541 /* init framerate emulation */
1542 for (i = 0; i < nb_input_files; i++) {
1543 InputFile *ifile = input_files[i];
1544 if (ifile->rate_emu)
1545 for (j = 0; j < ifile->nb_streams; j++)
1546 input_streams[j + ifile->ist_index]->start = av_gettime();
1547 }
1548
1549 /* output stream init */
1550 for (i = 0; i < nb_output_files; i++) {
1551 oc = output_files[i]->ctx;
1552 if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
1553 av_dump_format(oc, i, oc->filename, 1);
1554 av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
1555 return AVERROR(EINVAL);
1556 }
1557 }
1558
1559 /* init complex filtergraphs */
1560 for (i = 0; i < nb_filtergraphs; i++)
1561 if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
1562 return ret;
1563
1564 /* for each output stream, we compute the right encoding parameters */
1565 for (i = 0; i < nb_output_streams; i++) {
1566 AVCodecContext *icodec = NULL;
1567 ost = output_streams[i];
1568 oc = output_files[ost->file_index]->ctx;
1569 ist = get_input_stream(ost);
1570
1571 if (ost->attachment_filename)
1572 continue;
1573
1574 codec = ost->st->codec;
1575
1576 if (ist) {
1577 icodec = ist->st->codec;
1578
1579 ost->st->disposition = ist->st->disposition;
1580 codec->bits_per_raw_sample = icodec->bits_per_raw_sample;
1581 codec->chroma_sample_location = icodec->chroma_sample_location;
1582 }
1583
1584 if (ost->stream_copy) {
1585 uint64_t extra_size;
1586
1587 av_assert0(ist && !ost->filter);
1588
1589 extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
1590
1591 if (extra_size > INT_MAX) {
1592 return AVERROR(EINVAL);
1593 }
1594
1595 /* if stream_copy is selected, no need to decode or encode */
1596 codec->codec_id = icodec->codec_id;
1597 codec->codec_type = icodec->codec_type;
1598
1599 if (!codec->codec_tag) {
1600 if (!oc->oformat->codec_tag ||
1601 av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
1602 av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
1603 codec->codec_tag = icodec->codec_tag;
1604 }
1605
1606 codec->bit_rate = icodec->bit_rate;
1607 codec->rc_max_rate = icodec->rc_max_rate;
1608 codec->rc_buffer_size = icodec->rc_buffer_size;
1609 codec->field_order = icodec->field_order;
1610 codec->extradata = av_mallocz(extra_size);
1611 if (!codec->extradata) {
1612 return AVERROR(ENOMEM);
1613 }
1614 memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
1615 codec->extradata_size = icodec->extradata_size;
1616 if (!copy_tb) {
1617 codec->time_base = icodec->time_base;
1618 codec->time_base.num *= icodec->ticks_per_frame;
1619 av_reduce(&codec->time_base.num, &codec->time_base.den,
1620 codec->time_base.num, codec->time_base.den, INT_MAX);
1621 } else
1622 codec->time_base = ist->st->time_base;
1623
1624 switch (codec->codec_type) {
1625 case AVMEDIA_TYPE_AUDIO:
1626 if (audio_volume != 256) {
1627 av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
1628 exit_program(1);
1629 }
1630 codec->channel_layout = icodec->channel_layout;
1631 codec->sample_rate = icodec->sample_rate;
1632 codec->channels = icodec->channels;
1633 codec->frame_size = icodec->frame_size;
1634 codec->audio_service_type = icodec->audio_service_type;
1635 codec->block_align = icodec->block_align;
1636 break;
1637 case AVMEDIA_TYPE_VIDEO:
1638 codec->pix_fmt = icodec->pix_fmt;
1639 codec->width = icodec->width;
1640 codec->height = icodec->height;
1641 codec->has_b_frames = icodec->has_b_frames;
1642 if (!codec->sample_aspect_ratio.num) {
1643 codec->sample_aspect_ratio =
1644 ost->st->sample_aspect_ratio =
1645 ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
1646 ist->st->codec->sample_aspect_ratio.num ?
1647 ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
1648 }
1649 break;
1650 case AVMEDIA_TYPE_SUBTITLE:
1651 codec->width = icodec->width;
1652 codec->height = icodec->height;
1653 break;
1654 case AVMEDIA_TYPE_DATA:
1655 case AVMEDIA_TYPE_ATTACHMENT:
1656 break;
1657 default:
1658 abort();
1659 }
1660 } else {
1661 if (!ost->enc) {
1662 /* should only happen when a default codec is not present. */
1663 snprintf(error, sizeof(error), "Automatic encoder selection "
1664 "failed for output stream #%d:%d. Default encoder for "
1665 "format %s is probably disabled. Please choose an "
1666 "encoder manually.\n", ost->file_index, ost->index,
1667 oc->oformat->name);
1668 ret = AVERROR(EINVAL);
1669 goto dump_format;
1670 }
1671
1672 if (ist)
1673 ist->decoding_needed = 1;
1674 ost->encoding_needed = 1;
1675
1676 /*
1677 * We want CFR output if and only if one of those is true:
1678 * 1) user specified output framerate with -r
1679 * 2) user specified -vsync cfr
1680 * 3) output format is CFR and the user didn't force vsync to
1681 * something else than CFR
1682 *
1683 * in such a case, set ost->frame_rate
1684 */
1685 if (codec->codec_type == AVMEDIA_TYPE_VIDEO &&
1686 !ost->frame_rate.num && ist &&
1687 (video_sync_method == VSYNC_CFR ||
1688 (video_sync_method == VSYNC_AUTO &&
1689 !(oc->oformat->flags & (AVFMT_NOTIMESTAMPS | AVFMT_VARIABLE_FPS))))) {
1690 ost->frame_rate = ist->framerate.num ? ist->framerate :
1691 ist->st->avg_frame_rate.num ?
1692 ist->st->avg_frame_rate :
1693 (AVRational){25, 1};
1694
1695 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
1696 int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
1697 ost->frame_rate = ost->enc->supported_framerates[idx];
1698 }
1699 }
1700
1701 if (!ost->filter &&
1702 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
1703 codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
1704 FilterGraph *fg;
1705 fg = init_simple_filtergraph(ist, ost);
1706 if (configure_filtergraph(fg)) {
1707 av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
1708 exit(1);
1709 }
1710 }
1711
1712 switch (codec->codec_type) {
1713 case AVMEDIA_TYPE_AUDIO:
1714 codec->sample_fmt = ost->filter->filter->inputs[0]->format;
1715 codec->sample_rate = ost->filter->filter->inputs[0]->sample_rate;
1716 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
1717 codec->channels = av_get_channel_layout_nb_channels(codec->channel_layout);
1718 codec->time_base = (AVRational){ 1, codec->sample_rate };
1719 break;
1720 case AVMEDIA_TYPE_VIDEO:
1721 codec->time_base = ost->filter->filter->inputs[0]->time_base;
1722
1723 codec->width = ost->filter->filter->inputs[0]->w;
1724 codec->height = ost->filter->filter->inputs[0]->h;
1725 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
1726 ost->frame_aspect_ratio ? // overridden by the -aspect cli option
1727 av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
1728 ost->filter->filter->inputs[0]->sample_aspect_ratio;
1729 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
1730
1731 if (icodec &&
1732 (codec->width != icodec->width ||
1733 codec->height != icodec->height ||
1734 codec->pix_fmt != icodec->pix_fmt)) {
1735 codec->bits_per_raw_sample = 0;
1736 }
1737
1738 if (ost->forced_keyframes)
1739 parse_forced_key_frames(ost->forced_keyframes, ost,
1740 ost->st->codec);
1741 break;
1742 case AVMEDIA_TYPE_SUBTITLE:
1743 codec->time_base = (AVRational){1, 1000};
1744 break;
1745 default:
1746 abort();
1747 break;
1748 }
1749 /* two pass mode */
1750 if ((codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
1751 char logfilename[1024];
1752 FILE *f;
1753
1754 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
1755 ost->logfile_prefix ? ost->logfile_prefix :
1756 DEFAULT_PASS_LOGFILENAME_PREFIX,
1757 i);
1758 if (!strcmp(ost->enc->name, "libx264")) {
1759 av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
1760 } else {
1761 if (codec->flags & CODEC_FLAG_PASS1) {
1762 f = fopen(logfilename, "wb");
1763 if (!f) {
1764 av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
1765 logfilename, strerror(errno));
1766 exit_program(1);
1767 }
1768 ost->logfile = f;
1769 } else {
1770 char *logbuffer;
1771 size_t logbuffer_size;
1772 if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
1773 av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
1774 logfilename);
1775 exit_program(1);
1776 }
1777 codec->stats_in = logbuffer;
1778 }
1779 }
1780 }
1781 }
1782 }
1783
1784 /* open each encoder */
1785 for (i = 0; i < nb_output_streams; i++) {
1786 ost = output_streams[i];
1787 if (ost->encoding_needed) {
1788 AVCodec *codec = ost->enc;
1789 AVCodecContext *dec = NULL;
1790
1791 if ((ist = get_input_stream(ost)))
1792 dec = ist->st->codec;
1793 if (dec && dec->subtitle_header) {
1794 ost->st->codec->subtitle_header = av_malloc(dec->subtitle_header_size);
1795 if (!ost->st->codec->subtitle_header) {
1796 ret = AVERROR(ENOMEM);
1797 goto dump_format;
1798 }
1799 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
1800 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
1801 }
1802 if (!av_dict_get(ost->opts, "threads", NULL, 0))
1803 av_dict_set(&ost->opts, "threads", "auto", 0);
1804 if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
1805 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
1806 ost->file_index, ost->index);
1807 ret = AVERROR(EINVAL);
1808 goto dump_format;
1809 }
1810 assert_codec_experimental(ost->st->codec, 1);
1811 assert_avoptions(ost->opts);
1812 if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
1813 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
1814 "It takes bits/s as argument, not kbits/s\n");
1815 extra_size += ost->st->codec->extradata_size;
1816
1817 if (ost->st->codec->me_threshold)
1818 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
1819 }
1820 }
1821
1822 /* init input streams */
1823 for (i = 0; i < nb_input_streams; i++)
1824 if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
1825 goto dump_format;
1826
1827 /* discard unused programs */
1828 for (i = 0; i < nb_input_files; i++) {
1829 InputFile *ifile = input_files[i];
1830 for (j = 0; j < ifile->ctx->nb_programs; j++) {
1831 AVProgram *p = ifile->ctx->programs[j];
1832 int discard = AVDISCARD_ALL;
1833
1834 for (k = 0; k < p->nb_stream_indexes; k++)
1835 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
1836 discard = AVDISCARD_DEFAULT;
1837 break;
1838 }
1839 p->discard = discard;
1840 }
1841 }
1842
1843 /* open files and write file headers */
1844 for (i = 0; i < nb_output_files; i++) {
1845 oc = output_files[i]->ctx;
1846 oc->interrupt_callback = int_cb;
1847 if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
1848 char errbuf[128];
1849 const char *errbuf_ptr = errbuf;
1850 if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
1851 errbuf_ptr = strerror(AVUNERROR(ret));
1852 snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
1853 ret = AVERROR(EINVAL);
1854 goto dump_format;
1855 }
1856 assert_avoptions(output_files[i]->opts);
1857 if (strcmp(oc->oformat->name, "rtp")) {
1858 want_sdp = 0;
1859 }
1860 }
1861
1862 dump_format:
1863 /* dump the file output parameters - cannot be done before in case
1864 of stream copy */
1865 for (i = 0; i < nb_output_files; i++) {
1866 av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
1867 }
1868
1869 /* dump the stream mapping */
1870 av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
1871 for (i = 0; i < nb_input_streams; i++) {
1872 ist = input_streams[i];
1873
1874 for (j = 0; j < ist->nb_filters; j++) {
1875 if (ist->filters[j]->graph->graph_desc) {
1876 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d (%s) -> %s",
1877 ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
1878 ist->filters[j]->name);
1879 if (nb_filtergraphs > 1)
1880 av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
1881 av_log(NULL, AV_LOG_INFO, "\n");
1882 }
1883 }
1884 }
1885
1886 for (i = 0; i < nb_output_streams; i++) {
1887 ost = output_streams[i];
1888
1889 if (ost->attachment_filename) {
1890 /* an attached file */
1891 av_log(NULL, AV_LOG_INFO, " File %s -> Stream #%d:%d\n",
1892 ost->attachment_filename, ost->file_index, ost->index);
1893 continue;
1894 }
1895
1896 if (ost->filter && ost->filter->graph->graph_desc) {
1897 /* output from a complex graph */
1898 av_log(NULL, AV_LOG_INFO, " %s", ost->filter->name);
1899 if (nb_filtergraphs > 1)
1900 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
1901
1902 av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
1903 ost->index, ost->enc ? ost->enc->name : "?");
1904 continue;
1905 }
1906
1907 av_log(NULL, AV_LOG_INFO, " Stream #%d:%d -> #%d:%d",
1908 input_streams[ost->source_index]->file_index,
1909 input_streams[ost->source_index]->st->index,
1910 ost->file_index,
1911 ost->index);
1912 if (ost->sync_ist != input_streams[ost->source_index])
1913 av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
1914 ost->sync_ist->file_index,
1915 ost->sync_ist->st->index);
1916 if (ost->stream_copy)
1917 av_log(NULL, AV_LOG_INFO, " (copy)");
1918 else
1919 av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
1920 input_streams[ost->source_index]->dec->name : "?",
1921 ost->enc ? ost->enc->name : "?");
1922 av_log(NULL, AV_LOG_INFO, "\n");
1923 }
1924
1925 if (ret) {
1926 av_log(NULL, AV_LOG_ERROR, "%s\n", error);
1927 return ret;
1928 }
1929
1930 if (want_sdp) {
1931 print_sdp();
1932 }
1933
1934 return 0;
1935 }
1936
1937 /**
1938 * @return 1 if there are still streams where more output is wanted,
1939 * 0 otherwise
1940 */
1941 static int need_output(void)
1942 {
1943 int i;
1944
1945 for (i = 0; i < nb_output_streams; i++) {
1946 OutputStream *ost = output_streams[i];
1947 OutputFile *of = output_files[ost->file_index];
1948 AVFormatContext *os = output_files[ost->file_index]->ctx;
1949
1950 if (ost->finished ||
1951 (os->pb && avio_tell(os->pb) >= of->limit_filesize))
1952 continue;
1953 if (ost->frame_number >= ost->max_frames) {
1954 int j;
1955 for (j = 0; j < of->ctx->nb_streams; j++)
1956 output_streams[of->ost_index + j]->finished = 1;
1957 continue;
1958 }
1959
1960 return 1;
1961 }
1962
1963 return 0;
1964 }
1965
1966 static InputFile *select_input_file(void)
1967 {
1968 InputFile *ifile = NULL;
1969 int64_t ipts_min = INT64_MAX;
1970 int i;
1971
1972 for (i = 0; i < nb_input_streams; i++) {
1973 InputStream *ist = input_streams[i];
1974 int64_t ipts = ist->last_dts;
1975
1976 if (ist->discard || input_files[ist->file_index]->eagain)
1977 continue;
1978 if (!input_files[ist->file_index]->eof_reached) {
1979 if (ipts < ipts_min) {
1980 ipts_min = ipts;
1981 ifile = input_files[ist->file_index];
1982 }
1983 }
1984 }
1985
1986 return ifile;
1987 }
1988
1989 #if HAVE_PTHREADS
1990 static void *input_thread(void *arg)
1991 {
1992 InputFile *f = arg;
1993 int ret = 0;
1994
1995 while (!transcoding_finished && ret >= 0) {
1996 AVPacket pkt;
1997 ret = av_read_frame(f->ctx, &pkt);
1998
1999 if (ret == AVERROR(EAGAIN)) {
2000 av_usleep(10000);
2001 ret = 0;
2002 continue;
2003 } else if (ret < 0)
2004 break;
2005
2006 pthread_mutex_lock(&f->fifo_lock);
2007 while (!av_fifo_space(f->fifo))
2008 pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2009
2010 av_dup_packet(&pkt);
2011 av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2012
2013 pthread_mutex_unlock(&f->fifo_lock);
2014 }
2015
2016 f->finished = 1;
2017 return NULL;
2018 }
2019
2020 static void free_input_threads(void)
2021 {
2022 int i;
2023
2024 if (nb_input_files == 1)
2025 return;
2026
2027 transcoding_finished = 1;
2028
2029 for (i = 0; i < nb_input_files; i++) {
2030 InputFile *f = input_files[i];
2031 AVPacket pkt;
2032
2033 if (!f->fifo || f->joined)
2034 continue;
2035
2036 pthread_mutex_lock(&f->fifo_lock);
2037 while (av_fifo_size(f->fifo)) {
2038 av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2039 av_free_packet(&pkt);
2040 }
2041 pthread_cond_signal(&f->fifo_cond);
2042 pthread_mutex_unlock(&f->fifo_lock);
2043
2044 pthread_join(f->thread, NULL);
2045 f->joined = 1;
2046
2047 while (av_fifo_size(f->fifo)) {
2048 av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2049 av_free_packet(&pkt);
2050 }
2051 av_fifo_free(f->fifo);
2052 }
2053 }
2054
2055 static int init_input_threads(void)
2056 {
2057 int i, ret;
2058
2059 if (nb_input_files == 1)
2060 return 0;
2061
2062 for (i = 0; i < nb_input_files; i++) {
2063 InputFile *f = input_files[i];
2064
2065 if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2066 return AVERROR(ENOMEM);
2067
2068 pthread_mutex_init(&f->fifo_lock, NULL);
2069 pthread_cond_init (&f->fifo_cond, NULL);
2070
2071 if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2072 return AVERROR(ret);
2073 }
2074 return 0;
2075 }
2076
2077 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2078 {
2079 int ret = 0;
2080
2081 pthread_mutex_lock(&f->fifo_lock);
2082
2083 if (av_fifo_size(f->fifo)) {
2084 av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2085 pthread_cond_signal(&f->fifo_cond);
2086 } else {
2087 if (f->finished)
2088 ret = AVERROR_EOF;
2089 else
2090 ret = AVERROR(EAGAIN);
2091 }
2092
2093 pthread_mutex_unlock(&f->fifo_lock);
2094
2095 return ret;
2096 }
2097 #endif
2098
2099 static int get_input_packet(InputFile *f, AVPacket *pkt)
2100 {
2101 #if HAVE_PTHREADS
2102 if (nb_input_files > 1)
2103 return get_input_packet_mt(f, pkt);
2104 #endif
2105 return av_read_frame(f->ctx, pkt);
2106 }
2107
2108 static int got_eagain(void)
2109 {
2110 int i;
2111 for (i = 0; i < nb_input_files; i++)
2112 if (input_files[i]->eagain)
2113 return 1;
2114 return 0;
2115 }
2116
2117 static void reset_eagain(void)
2118 {
2119 int i;
2120 for (i = 0; i < nb_input_files; i++)
2121 input_files[i]->eagain = 0;
2122 }
2123
2124 /**
2125 * Read one packet from an input file and send it for
2126 * - decoding -> lavfi (audio/video)
2127 * - decoding -> encoding -> muxing (subtitles)
2128 * - muxing (streamcopy)
2129 *
2130 * @return
2131 * - 0 -- one packet was read and processed
2132 * - AVERROR(EAGAIN) -- no packets were available for selected file,
2133 * this function should be called again
2134 * - AVERROR_EOF -- this function should not be called again
2135 */
2136 static int process_input(void)
2137 {
2138 InputFile *ifile;
2139 AVFormatContext *is;
2140 InputStream *ist;
2141 AVPacket pkt;
2142 int ret, i, j;
2143
2144 /* select the stream that we must read now */
2145 ifile = select_input_file();
2146 /* if none, if is finished */
2147 if (!ifile) {
2148 if (got_eagain()) {
2149 reset_eagain();
2150 av_usleep(10000);
2151 return AVERROR(EAGAIN);
2152 }
2153 av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from.\n");
2154 return AVERROR_EOF;
2155 }
2156
2157 is = ifile->ctx;
2158 ret = get_input_packet(ifile, &pkt);
2159
2160 if (ret == AVERROR(EAGAIN)) {
2161 ifile->eagain = 1;
2162 return ret;
2163 }
2164 if (ret < 0) {
2165 if (ret != AVERROR_EOF) {
2166 print_error(is->filename, ret);
2167 if (exit_on_error)
2168 exit_program(1);
2169 }
2170 ifile->eof_reached = 1;
2171
2172 for (i = 0; i < ifile->nb_streams; i++) {
2173 ist = input_streams[ifile->ist_index + i];
2174 if (ist->decoding_needed)
2175 output_packet(ist, NULL);
2176
2177 /* mark all outputs that don't go through lavfi as finished */
2178 for (j = 0; j < nb_output_streams; j++) {
2179 OutputStream *ost = output_streams[j];
2180
2181 if (ost->source_index == ifile->ist_index + i &&
2182 (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2183 ost->finished= 1;
2184 }
2185 }
2186
2187 return AVERROR(EAGAIN);
2188 }
2189
2190 reset_eagain();
2191
2192 if (do_pkt_dump) {
2193 av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2194 is->streams[pkt.stream_index]);
2195 }
2196 /* the following test is needed in case new streams appear
2197 dynamically in stream : we ignore them */
2198 if (pkt.stream_index >= ifile->nb_streams)
2199 goto discard_packet;
2200
2201 ist = input_streams[ifile->ist_index + pkt.stream_index];
2202 if (ist->discard)
2203 goto discard_packet;
2204
2205 if (pkt.dts != AV_NOPTS_VALUE)
2206 pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2207 if (pkt.pts != AV_NOPTS_VALUE)
2208 pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2209
2210 if (pkt.pts != AV_NOPTS_VALUE)
2211 pkt.pts *= ist->ts_scale;
2212 if (pkt.dts != AV_NOPTS_VALUE)
2213 pkt.dts *= ist->ts_scale;
2214
2215 if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2216 (is->iformat->flags & AVFMT_TS_DISCONT)) {
2217 int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2218 int64_t delta = pkt_dts - ist->next_dts;
2219
2220 if ((FFABS(delta) > 1LL * dts_delta_threshold * AV_TIME_BASE || pkt_dts + 1 < ist->last_dts) && !copy_ts) {
2221 ifile->ts_offset -= delta;
2222 av_log(NULL, AV_LOG_DEBUG,
2223 "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2224 delta, ifile->ts_offset);
2225 pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2226 if (pkt.pts != AV_NOPTS_VALUE)
2227 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2228 }
2229 }
2230
2231 ret = output_packet(ist, &pkt);
2232 if (ret < 0) {
2233 av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d\n",
2234 ist->file_index, ist->st->index);
2235 if (exit_on_error)
2236 exit_program(1);
2237 }
2238
2239 discard_packet:
2240 av_free_packet(&pkt);
2241
2242 return 0;
2243 }
2244
2245 /*
2246 * The following code is the main loop of the file converter
2247 */
2248 static int transcode(void)
2249 {
2250 int ret, i, need_input = 1;
2251 AVFormatContext *os;
2252 OutputStream *ost;
2253 InputStream *ist;
2254 int64_t timer_start;
2255
2256 ret = transcode_init();
2257 if (ret < 0)
2258 goto fail;
2259
2260 av_log(NULL, AV_LOG_INFO, "Press ctrl-c to stop encoding\n");
2261 term_init();
2262
2263 timer_start = av_gettime();
2264
2265 #if HAVE_PTHREADS
2266 if ((ret = init_input_threads()) < 0)
2267 goto fail;
2268 #endif
2269
2270 while (!received_sigterm) {
2271 /* check if there's any stream where output is still needed */
2272 if (!need_output()) {
2273 av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
2274 break;
2275 }
2276
2277 /* read and process one input packet if needed */
2278 if (need_input) {
2279 ret = process_input();
2280 if (ret == AVERROR_EOF)
2281 need_input = 0;
2282 }
2283
2284 ret = poll_filters();
2285 if (ret < 0) {
2286 if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
2287 continue;
2288
2289 av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
2290 break;
2291 }
2292
2293 /* dump report by using the output first video and audio streams */
2294 print_report(0, timer_start);
2295 }
2296 #if HAVE_PTHREADS
2297 free_input_threads();
2298 #endif
2299
2300 /* at the end of stream, we must flush the decoder buffers */
2301 for (i = 0; i < nb_input_streams; i++) {
2302 ist = input_streams[i];
2303 if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
2304 output_packet(ist, NULL);
2305 }
2306 }
2307 poll_filters();
2308 flush_encoders();
2309
2310 term_exit();
2311
2312 /* write the trailer if needed and close file */
2313 for (i = 0; i < nb_output_files; i++) {
2314 os = output_files[i]->ctx;
2315 av_write_trailer(os);
2316 }
2317
2318 /* dump report by using the first video and audio streams */
2319 print_report(1, timer_start);
2320
2321 /* close each encoder */
2322 for (i = 0; i < nb_output_streams; i++) {
2323 ost = output_streams[i];
2324 if (ost->encoding_needed) {
2325 av_freep(&ost->st->codec->stats_in);
2326 avcodec_close(ost->st->codec);
2327 }
2328 }
2329
2330 /* close each decoder */
2331 for (i = 0; i < nb_input_streams; i++) {
2332 ist = input_streams[i];
2333 if (ist->decoding_needed) {
2334 avcodec_close(ist->st->codec);
2335 }
2336 }
2337
2338 /* finished ! */
2339 ret = 0;
2340
2341 fail:
2342 #if HAVE_PTHREADS
2343 free_input_threads();
2344 #endif
2345
2346 if (output_streams) {
2347 for (i = 0; i < nb_output_streams; i++) {
2348 ost = output_streams[i];
2349 if (ost) {
2350 if (ost->stream_copy)
2351 av_freep(&ost->st->codec->extradata);
2352 if (ost->logfile) {
2353 fclose(ost->logfile);
2354 ost->logfile = NULL;
2355 }
2356 av_freep(&ost->st->codec->subtitle_header);
2357 av_free(ost->forced_kf_pts);
2358 av_dict_free(&ost->opts);
2359 }
2360 }
2361 }
2362 return ret;
2363 }
2364
2365 static int64_t getutime(void)
2366 {
2367 #if HAVE_GETRUSAGE
2368 struct rusage rusage;
2369
2370 getrusage(RUSAGE_SELF, &rusage);
2371 return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
2372 #elif HAVE_GETPROCESSTIMES
2373 HANDLE proc;
2374 FILETIME c, e, k, u;
2375 proc = GetCurrentProcess();
2376 GetProcessTimes(proc, &c, &e, &k, &u);
2377 return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
2378 #else
2379 return av_gettime();
2380 #endif
2381 }
2382
2383 static int64_t getmaxrss(void)
2384 {
2385 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
2386 struct rusage rusage;
2387 getrusage(RUSAGE_SELF, &rusage);
2388 return (int64_t)rusage.ru_maxrss * 1024;
2389 #elif HAVE_GETPROCESSMEMORYINFO
2390 HANDLE proc;
2391 PROCESS_MEMORY_COUNTERS memcounters;
2392 proc = GetCurrentProcess();
2393 memcounters.cb = sizeof(memcounters);
2394 GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
2395 return memcounters.PeakPagefileUsage;
2396 #else
2397 return 0;
2398 #endif
2399 }
2400
2401 static void parse_cpuflags(int argc, char **argv, const OptionDef *options)
2402 {
2403 int idx = locate_option(argc, argv, options, "cpuflags");
2404 if (idx && argv[idx + 1])
2405 opt_cpuflags(NULL, "cpuflags", argv[idx + 1]);
2406 }
2407
2408 int main(int argc, char **argv)
2409 {
2410 OptionsContext o = { 0 };
2411 int64_t ti;
2412
2413 reset_options(&o);
2414
2415 av_log_set_flags(AV_LOG_SKIP_REPEATED);
2416 parse_loglevel(argc, argv, options);
2417
2418 avcodec_register_all();
2419 #if CONFIG_AVDEVICE
2420 avdevice_register_all();
2421 #endif
2422 avfilter_register_all();
2423 av_register_all();
2424 avformat_network_init();
2425
2426 show_banner();
2427
2428 parse_cpuflags(argc, argv, options);
2429
2430 /* parse options */
2431 parse_options(&o, argc, argv, options, opt_output_file);
2432
2433 if (nb_output_files <= 0 && nb_input_files == 0) {
2434 show_usage();
2435 av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
2436 exit_program(1);
2437 }
2438
2439 /* file converter / grab */
2440 if (nb_output_files <= 0) {
2441 fprintf(stderr, "At least one output file must be specified\n");
2442 exit_program(1);
2443 }
2444
2445 ti = getutime();
2446 if (transcode() < 0)
2447 exit_program(1);
2448 ti = getutime() - ti;
2449 if (do_benchmark) {
2450 int maxrss = getmaxrss() / 1024;
2451 printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss);
2452 }
2453
2454 exit_program(0);
2455 return 0;
2456 }