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[libav.git] / ffmpeg.c
1 /*
2 * FFmpeg main
3 * Copyright (c) 2000-2003 Fabrice Bellard
4 *
5 * This file is part of FFmpeg.
6 *
7 * FFmpeg 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 * FFmpeg 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 FFmpeg; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 /* needed for usleep() */
23 #define _XOPEN_SOURCE 600
24
25 #include "config.h"
26 #include <ctype.h>
27 #include <string.h>
28 #include <math.h>
29 #include <stdlib.h>
30 #include <errno.h>
31 #include <signal.h>
32 #include <limits.h>
33 #include <unistd.h>
34 #include "libavformat/avformat.h"
35 #include "libavdevice/avdevice.h"
36 #include "libswscale/swscale.h"
37 #include "libavcodec/opt.h"
38 #include "libavcodec/audioconvert.h"
39 #include "libavcodec/colorspace.h"
40 #include "libavutil/fifo.h"
41 #include "libavutil/pixdesc.h"
42 #include "libavutil/avstring.h"
43 #include "libavutil/libm.h"
44 #include "libavformat/os_support.h"
45
46 #if CONFIG_AVFILTER
47 # include "libavfilter/avfilter.h"
48 # include "libavfilter/avfiltergraph.h"
49 # include "libavfilter/graphparser.h"
50 # include "libavfilter/vsrc_buffer.h"
51 #endif
52
53 #if HAVE_SYS_RESOURCE_H
54 #include <sys/types.h>
55 #include <sys/time.h>
56 #include <sys/resource.h>
57 #elif HAVE_GETPROCESSTIMES
58 #include <windows.h>
59 #endif
60 #if HAVE_GETPROCESSMEMORYINFO
61 #include <windows.h>
62 #include <psapi.h>
63 #endif
64
65 #if HAVE_SYS_SELECT_H
66 #include <sys/select.h>
67 #endif
68
69 #if HAVE_TERMIOS_H
70 #include <fcntl.h>
71 #include <sys/ioctl.h>
72 #include <sys/time.h>
73 #include <termios.h>
74 #elif HAVE_CONIO_H
75 #include <conio.h>
76 #endif
77 #include <time.h>
78
79 #include "cmdutils.h"
80
81 #undef NDEBUG
82 #include <assert.h>
83
84 const char program_name[] = "FFmpeg";
85 const int program_birth_year = 2000;
86
87 /* select an input stream for an output stream */
88 typedef struct AVStreamMap {
89 int file_index;
90 int stream_index;
91 int sync_file_index;
92 int sync_stream_index;
93 } AVStreamMap;
94
95 /** select an input file for an output file */
96 typedef struct AVMetaDataMap {
97 int out_file;
98 int in_file;
99 } AVMetaDataMap;
100
101 static const OptionDef options[];
102
103 #define MAX_FILES 100
104
105 static const char *last_asked_format = NULL;
106 static AVFormatContext *input_files[MAX_FILES];
107 static int64_t input_files_ts_offset[MAX_FILES];
108 static double input_files_ts_scale[MAX_FILES][MAX_STREAMS];
109 static AVCodec *input_codecs[MAX_FILES*MAX_STREAMS];
110 static int nb_input_files = 0;
111 static int nb_icodecs;
112
113 static AVFormatContext *output_files[MAX_FILES];
114 static AVCodec *output_codecs[MAX_FILES*MAX_STREAMS];
115 static int nb_output_files = 0;
116 static int nb_ocodecs;
117
118 static AVStreamMap stream_maps[MAX_FILES*MAX_STREAMS];
119 static int nb_stream_maps;
120
121 static AVMetaDataMap meta_data_maps[MAX_FILES];
122 static int nb_meta_data_maps;
123
124 static int frame_width = 0;
125 static int frame_height = 0;
126 static float frame_aspect_ratio = 0;
127 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
128 static enum SampleFormat audio_sample_fmt = SAMPLE_FMT_NONE;
129 static int frame_topBand = 0;
130 static int frame_bottomBand = 0;
131 static int frame_leftBand = 0;
132 static int frame_rightBand = 0;
133 static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
134 static AVRational frame_rate;
135 static float video_qscale = 0;
136 static uint16_t *intra_matrix = NULL;
137 static uint16_t *inter_matrix = NULL;
138 static const char *video_rc_override_string=NULL;
139 static int video_disable = 0;
140 static int video_discard = 0;
141 static char *video_codec_name = NULL;
142 static int video_codec_tag = 0;
143 static char *video_language = NULL;
144 static int same_quality = 0;
145 static int do_deinterlace = 0;
146 static int top_field_first = -1;
147 static int me_threshold = 0;
148 static int intra_dc_precision = 8;
149 static int loop_input = 0;
150 static int loop_output = AVFMT_NOOUTPUTLOOP;
151 static int qp_hist = 0;
152 #if CONFIG_AVFILTER
153 static char *vfilters = NULL;
154 AVFilterGraph *graph = NULL;
155 #endif
156
157 static int intra_only = 0;
158 static int audio_sample_rate = 44100;
159 static int64_t channel_layout = 0;
160 #define QSCALE_NONE -99999
161 static float audio_qscale = QSCALE_NONE;
162 static int audio_disable = 0;
163 static int audio_channels = 1;
164 static char *audio_codec_name = NULL;
165 static int audio_codec_tag = 0;
166 static char *audio_language = NULL;
167
168 static int subtitle_disable = 0;
169 static char *subtitle_codec_name = NULL;
170 static char *subtitle_language = NULL;
171 static int subtitle_codec_tag = 0;
172
173 static float mux_preload= 0.5;
174 static float mux_max_delay= 0.7;
175
176 static int64_t recording_time = INT64_MAX;
177 static int64_t start_time = 0;
178 static int64_t rec_timestamp = 0;
179 static int64_t input_ts_offset = 0;
180 static int file_overwrite = 0;
181 static int metadata_count;
182 static AVMetadataTag *metadata;
183 static int do_benchmark = 0;
184 static int do_hex_dump = 0;
185 static int do_pkt_dump = 0;
186 static int do_psnr = 0;
187 static int do_pass = 0;
188 static char *pass_logfilename_prefix = NULL;
189 static int audio_stream_copy = 0;
190 static int video_stream_copy = 0;
191 static int subtitle_stream_copy = 0;
192 static int video_sync_method= -1;
193 static int audio_sync_method= 0;
194 static float audio_drift_threshold= 0.1;
195 static int copy_ts= 0;
196 static int opt_shortest = 0;
197 static int video_global_header = 0;
198 static char *vstats_filename;
199 static FILE *vstats_file;
200 static int opt_programid = 0;
201 static int copy_initial_nonkeyframes = 0;
202
203 static int rate_emu = 0;
204
205 static int video_channel = 0;
206 static char *video_standard;
207
208 static int audio_volume = 256;
209
210 static int exit_on_error = 0;
211 static int using_stdin = 0;
212 static int verbose = 1;
213 static int thread_count= 1;
214 static int q_pressed = 0;
215 static int64_t video_size = 0;
216 static int64_t audio_size = 0;
217 static int64_t extra_size = 0;
218 static int nb_frames_dup = 0;
219 static int nb_frames_drop = 0;
220 static int input_sync;
221 static uint64_t limit_filesize = 0;
222 static int force_fps = 0;
223
224 static int pgmyuv_compatibility_hack=0;
225 static float dts_delta_threshold = 10;
226
227 static unsigned int sws_flags = SWS_BICUBIC;
228
229 static int64_t timer_start;
230
231 static uint8_t *audio_buf;
232 static uint8_t *audio_out;
233 unsigned int allocated_audio_out_size, allocated_audio_buf_size;
234
235 static short *samples;
236
237 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
238 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
239 static AVBitStreamFilterContext *subtitle_bitstream_filters=NULL;
240 static AVBitStreamFilterContext *bitstream_filters[MAX_FILES][MAX_STREAMS];
241
242 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
243
244 struct AVInputStream;
245
246 typedef struct AVOutputStream {
247 int file_index; /* file index */
248 int index; /* stream index in the output file */
249 int source_index; /* AVInputStream index */
250 AVStream *st; /* stream in the output file */
251 int encoding_needed; /* true if encoding needed for this stream */
252 int frame_number;
253 /* input pts and corresponding output pts
254 for A/V sync */
255 //double sync_ipts; /* dts from the AVPacket of the demuxer in second units */
256 struct AVInputStream *sync_ist; /* input stream to sync against */
257 int64_t sync_opts; /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
258 /* video only */
259 int video_resample;
260 AVFrame pict_tmp; /* temporary image for resampling */
261 struct SwsContext *img_resample_ctx; /* for image resampling */
262 int resample_height;
263 int resample_width;
264 int resample_pix_fmt;
265
266 /* full frame size of first frame */
267 int original_height;
268 int original_width;
269
270 /* cropping area sizes */
271 int video_crop;
272 int topBand;
273 int bottomBand;
274 int leftBand;
275 int rightBand;
276
277 /* cropping area of first frame */
278 int original_topBand;
279 int original_bottomBand;
280 int original_leftBand;
281 int original_rightBand;
282
283 /* audio only */
284 int audio_resample;
285 ReSampleContext *resample; /* for audio resampling */
286 int reformat_pair;
287 AVAudioConvert *reformat_ctx;
288 AVFifoBuffer *fifo; /* for compression: one audio fifo per codec */
289 FILE *logfile;
290 } AVOutputStream;
291
292 typedef struct AVInputStream {
293 int file_index;
294 int index;
295 AVStream *st;
296 int discard; /* true if stream data should be discarded */
297 int decoding_needed; /* true if the packets must be decoded in 'raw_fifo' */
298 int64_t sample_index; /* current sample */
299
300 int64_t start; /* time when read started */
301 int64_t next_pts; /* synthetic pts for cases where pkt.pts
302 is not defined */
303 int64_t pts; /* current pts */
304 int is_start; /* is 1 at the start and after a discontinuity */
305 int showed_multi_packet_warning;
306 int is_past_recording_time;
307 #if CONFIG_AVFILTER
308 AVFilterContext *out_video_filter;
309 AVFilterContext *input_video_filter;
310 AVFrame *filter_frame;
311 int has_filter_frame;
312 AVFilterPicRef *picref;
313 #endif
314 } AVInputStream;
315
316 typedef struct AVInputFile {
317 int eof_reached; /* true if eof reached */
318 int ist_index; /* index of first stream in ist_table */
319 int buffer_size; /* current total buffer size */
320 int nb_streams; /* nb streams we are aware of */
321 } AVInputFile;
322
323 #if HAVE_TERMIOS_H
324
325 /* init terminal so that we can grab keys */
326 static struct termios oldtty;
327 #endif
328
329 #if CONFIG_AVFILTER
330 typedef struct {
331 int pix_fmt;
332 } FilterOutPriv;
333
334
335 static int output_init(AVFilterContext *ctx, const char *args, void *opaque)
336 {
337 FilterOutPriv *priv = ctx->priv;
338
339 if(!opaque) return -1;
340
341 priv->pix_fmt = *((int *)opaque);
342
343 return 0;
344 }
345
346 static void output_end_frame(AVFilterLink *link)
347 {
348 }
349
350 static int output_query_formats(AVFilterContext *ctx)
351 {
352 FilterOutPriv *priv = ctx->priv;
353 enum PixelFormat pix_fmts[] = { priv->pix_fmt, PIX_FMT_NONE };
354
355 avfilter_set_common_formats(ctx, avfilter_make_format_list(pix_fmts));
356 return 0;
357 }
358
359 static int get_filtered_video_pic(AVFilterContext *ctx,
360 AVFilterPicRef **picref, AVFrame *pic2,
361 uint64_t *pts)
362 {
363 AVFilterPicRef *pic;
364
365 if(avfilter_request_frame(ctx->inputs[0]))
366 return -1;
367 if(!(pic = ctx->inputs[0]->cur_pic))
368 return -1;
369 *picref = pic;
370 ctx->inputs[0]->cur_pic = NULL;
371
372 *pts = pic->pts;
373
374 memcpy(pic2->data, pic->data, sizeof(pic->data));
375 memcpy(pic2->linesize, pic->linesize, sizeof(pic->linesize));
376 pic2->interlaced_frame = pic->interlaced;
377 pic2->top_field_first = pic->top_field_first;
378
379 return 1;
380 }
381
382 static AVFilter output_filter =
383 {
384 .name = "ffmpeg_output",
385
386 .priv_size = sizeof(FilterOutPriv),
387 .init = output_init,
388
389 .query_formats = output_query_formats,
390
391 .inputs = (AVFilterPad[]) {{ .name = "default",
392 .type = AVMEDIA_TYPE_VIDEO,
393 .end_frame = output_end_frame,
394 .min_perms = AV_PERM_READ, },
395 { .name = NULL }},
396 .outputs = (AVFilterPad[]) {{ .name = NULL }},
397 };
398
399 static int configure_filters(AVInputStream *ist, AVOutputStream *ost)
400 {
401 AVFilterContext *last_filter, *filter;
402 /** filter graph containing all filters including input & output */
403 AVCodecContext *codec = ost->st->codec;
404 AVCodecContext *icodec = ist->st->codec;
405 char args[255];
406
407 graph = av_mallocz(sizeof(AVFilterGraph));
408
409 if (!(ist->input_video_filter = avfilter_open(avfilter_get_by_name("buffer"), "src")))
410 return -1;
411 if (!(ist->out_video_filter = avfilter_open(&output_filter, "out")))
412 return -1;
413
414 snprintf(args, 255, "%d:%d:%d", ist->st->codec->width,
415 ist->st->codec->height, ist->st->codec->pix_fmt);
416 if (avfilter_init_filter(ist->input_video_filter, args, NULL))
417 return -1;
418 if (avfilter_init_filter(ist->out_video_filter, NULL, &codec->pix_fmt))
419 return -1;
420
421 /* add input and output filters to the overall graph */
422 avfilter_graph_add_filter(graph, ist->input_video_filter);
423 avfilter_graph_add_filter(graph, ist->out_video_filter);
424
425 last_filter = ist->input_video_filter;
426
427 if (ost->video_crop) {
428 snprintf(args, 255, "%d:%d:%d:%d", ost->leftBand, ost->topBand,
429 codec->width,
430 codec->height);
431 filter = avfilter_open(avfilter_get_by_name("crop"), NULL);
432 if (!filter)
433 return -1;
434 if (avfilter_init_filter(filter, args, NULL))
435 return -1;
436 if (avfilter_link(last_filter, 0, filter, 0))
437 return -1;
438 last_filter = filter;
439 avfilter_graph_add_filter(graph, last_filter);
440 }
441
442 if((codec->width !=
443 icodec->width - (frame_leftBand + frame_rightBand)) ||
444 (codec->height != icodec->height - (frame_topBand + frame_bottomBand))) {
445 snprintf(args, 255, "%d:%d:flags=0x%X",
446 codec->width,
447 codec->height,
448 (int)av_get_int(sws_opts, "sws_flags", NULL));
449 filter = avfilter_open(avfilter_get_by_name("scale"), NULL);
450 if (!filter)
451 return -1;
452 if (avfilter_init_filter(filter, args, NULL))
453 return -1;
454 if (avfilter_link(last_filter, 0, filter, 0))
455 return -1;
456 last_filter = filter;
457 avfilter_graph_add_filter(graph, last_filter);
458 }
459
460 if (vfilters) {
461 AVFilterInOut *outputs = av_malloc(sizeof(AVFilterInOut));
462 AVFilterInOut *inputs = av_malloc(sizeof(AVFilterInOut));
463
464 outputs->name = av_strdup("in");
465 outputs->filter = last_filter;
466 outputs->pad_idx = 0;
467 outputs->next = NULL;
468
469 inputs->name = av_strdup("out");
470 inputs->filter = ist->out_video_filter;
471 inputs->pad_idx = 0;
472 inputs->next = NULL;
473
474 if (avfilter_graph_parse(graph, vfilters, inputs, outputs, NULL) < 0)
475 return -1;
476 av_freep(&vfilters);
477 } else {
478 if (avfilter_link(last_filter, 0, ist->out_video_filter, 0) < 0)
479 return -1;
480 }
481
482 snprintf(args, sizeof(args), "flags=0x%X", (int)av_get_int(sws_opts, "sws_flags", NULL));
483 graph->scale_sws_opts = av_strdup(args);
484
485 /* configure all the filter links */
486 if (avfilter_graph_check_validity(graph, NULL))
487 return -1;
488 if (avfilter_graph_config_formats(graph, NULL))
489 return -1;
490 if (avfilter_graph_config_links(graph, NULL))
491 return -1;
492
493 codec->width = ist->out_video_filter->inputs[0]->w;
494 codec->height = ist->out_video_filter->inputs[0]->h;
495
496 return 0;
497 }
498 #endif /* CONFIG_AVFILTER */
499
500 static void term_exit(void)
501 {
502 #if HAVE_TERMIOS_H
503 tcsetattr (0, TCSANOW, &oldtty);
504 #endif
505 }
506
507 static volatile int received_sigterm = 0;
508
509 static void
510 sigterm_handler(int sig)
511 {
512 received_sigterm = sig;
513 term_exit();
514 }
515
516 static void term_init(void)
517 {
518 #if HAVE_TERMIOS_H
519 struct termios tty;
520
521 tcgetattr (0, &tty);
522 oldtty = tty;
523 atexit(term_exit);
524
525 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
526 |INLCR|IGNCR|ICRNL|IXON);
527 tty.c_oflag |= OPOST;
528 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
529 tty.c_cflag &= ~(CSIZE|PARENB);
530 tty.c_cflag |= CS8;
531 tty.c_cc[VMIN] = 1;
532 tty.c_cc[VTIME] = 0;
533
534 tcsetattr (0, TCSANOW, &tty);
535 signal(SIGQUIT, sigterm_handler); /* Quit (POSIX). */
536 #endif
537
538 signal(SIGINT , sigterm_handler); /* Interrupt (ANSI). */
539 signal(SIGTERM, sigterm_handler); /* Termination (ANSI). */
540 #ifdef SIGXCPU
541 signal(SIGXCPU, sigterm_handler);
542 #endif
543
544 #if CONFIG_BEOS_NETSERVER
545 fcntl(0, F_SETFL, fcntl(0, F_GETFL) | O_NONBLOCK);
546 #endif
547 }
548
549 /* read a key without blocking */
550 static int read_key(void)
551 {
552 #if HAVE_TERMIOS_H
553 int n = 1;
554 unsigned char ch;
555 #if !CONFIG_BEOS_NETSERVER
556 struct timeval tv;
557 fd_set rfds;
558
559 FD_ZERO(&rfds);
560 FD_SET(0, &rfds);
561 tv.tv_sec = 0;
562 tv.tv_usec = 0;
563 n = select(1, &rfds, NULL, NULL, &tv);
564 #endif
565 if (n > 0) {
566 n = read(0, &ch, 1);
567 if (n == 1)
568 return ch;
569
570 return n;
571 }
572 #elif HAVE_CONIO_H
573 if(kbhit())
574 return(getch());
575 #endif
576 return -1;
577 }
578
579 static int decode_interrupt_cb(void)
580 {
581 return q_pressed || (q_pressed = read_key() == 'q');
582 }
583
584 static int av_exit(int ret)
585 {
586 int i;
587
588 /* close files */
589 for(i=0;i<nb_output_files;i++) {
590 /* maybe av_close_output_file ??? */
591 AVFormatContext *s = output_files[i];
592 int j;
593 if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
594 url_fclose(s->pb);
595 for(j=0;j<s->nb_streams;j++) {
596 av_metadata_free(&s->streams[j]->metadata);
597 av_free(s->streams[j]->codec);
598 av_free(s->streams[j]);
599 }
600 for(j=0;j<s->nb_programs;j++) {
601 av_metadata_free(&s->programs[j]->metadata);
602 }
603 for(j=0;j<s->nb_chapters;j++) {
604 av_metadata_free(&s->chapters[j]->metadata);
605 }
606 av_metadata_free(&s->metadata);
607 av_free(s);
608 }
609 for(i=0;i<nb_input_files;i++)
610 av_close_input_file(input_files[i]);
611
612 av_free(intra_matrix);
613 av_free(inter_matrix);
614
615 if (vstats_file)
616 fclose(vstats_file);
617 av_free(vstats_filename);
618
619 av_free(opt_names);
620
621 av_free(video_codec_name);
622 av_free(audio_codec_name);
623 av_free(subtitle_codec_name);
624
625 av_free(video_standard);
626
627 #if CONFIG_POWERPC_PERF
628 void powerpc_display_perf_report(void);
629 powerpc_display_perf_report();
630 #endif /* CONFIG_POWERPC_PERF */
631
632 for (i=0;i<AVMEDIA_TYPE_NB;i++)
633 av_free(avcodec_opts[i]);
634 av_free(avformat_opts);
635 av_free(sws_opts);
636 av_free(audio_buf);
637 av_free(audio_out);
638 allocated_audio_buf_size= allocated_audio_out_size= 0;
639 av_free(samples);
640
641 #if CONFIG_AVFILTER
642 avfilter_uninit();
643 #endif
644
645 if (received_sigterm) {
646 fprintf(stderr,
647 "Received signal %d: terminating.\n",
648 (int) received_sigterm);
649 exit (255);
650 }
651
652 exit(ret); /* not all OS-es handle main() return value */
653 return ret;
654 }
655
656 static void choose_sample_fmt(AVStream *st, AVCodec *codec)
657 {
658 if(codec && codec->sample_fmts){
659 const enum SampleFormat *p= codec->sample_fmts;
660 for(; *p!=-1; p++){
661 if(*p == st->codec->sample_fmt)
662 break;
663 }
664 if(*p == -1)
665 st->codec->sample_fmt = codec->sample_fmts[0];
666 }
667 }
668
669 static void choose_sample_rate(AVStream *st, AVCodec *codec)
670 {
671 if(codec && codec->supported_samplerates){
672 const int *p= codec->supported_samplerates;
673 int best;
674 int best_dist=INT_MAX;
675 for(; *p; p++){
676 int dist= abs(st->codec->sample_rate - *p);
677 if(dist < best_dist){
678 best_dist= dist;
679 best= *p;
680 }
681 }
682 if(best_dist){
683 av_log(st->codec, AV_LOG_WARNING, "Requested sampling rate unsupported using closest supported (%d)\n", best);
684 }
685 st->codec->sample_rate= best;
686 }
687 }
688
689 static void choose_pixel_fmt(AVStream *st, AVCodec *codec)
690 {
691 if(codec && codec->pix_fmts){
692 const enum PixelFormat *p= codec->pix_fmts;
693 for(; *p!=-1; p++){
694 if(*p == st->codec->pix_fmt)
695 break;
696 }
697 if(*p == -1
698 && !( st->codec->codec_id==CODEC_ID_MJPEG
699 && st->codec->strict_std_compliance <= FF_COMPLIANCE_INOFFICIAL
700 && ( st->codec->pix_fmt == PIX_FMT_YUV420P
701 || st->codec->pix_fmt == PIX_FMT_YUV422P)))
702 st->codec->pix_fmt = codec->pix_fmts[0];
703 }
704 }
705
706 static int read_ffserver_streams(AVFormatContext *s, const char *filename)
707 {
708 int i, err;
709 AVFormatContext *ic;
710 int nopts = 0;
711
712 err = av_open_input_file(&ic, filename, NULL, FFM_PACKET_SIZE, NULL);
713 if (err < 0)
714 return err;
715 /* copy stream format */
716 s->nb_streams = ic->nb_streams;
717 for(i=0;i<ic->nb_streams;i++) {
718 AVStream *st;
719 AVCodec *codec;
720
721 // FIXME: a more elegant solution is needed
722 st = av_mallocz(sizeof(AVStream));
723 memcpy(st, ic->streams[i], sizeof(AVStream));
724 st->codec = avcodec_alloc_context();
725 if (!st->codec) {
726 print_error(filename, AVERROR(ENOMEM));
727 av_exit(1);
728 }
729 avcodec_copy_context(st->codec, ic->streams[i]->codec);
730 s->streams[i] = st;
731
732 codec = avcodec_find_encoder(st->codec->codec_id);
733 if (st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
734 if (audio_stream_copy) {
735 st->stream_copy = 1;
736 } else
737 choose_sample_fmt(st, codec);
738 } else if (st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
739 if (video_stream_copy) {
740 st->stream_copy = 1;
741 } else
742 choose_pixel_fmt(st, codec);
743 }
744
745 if(!st->codec->thread_count)
746 st->codec->thread_count = 1;
747 if(st->codec->thread_count>1)
748 avcodec_thread_init(st->codec, st->codec->thread_count);
749
750 if(st->codec->flags & CODEC_FLAG_BITEXACT)
751 nopts = 1;
752 }
753
754 if (!nopts)
755 s->timestamp = av_gettime();
756
757 av_close_input_file(ic);
758 return 0;
759 }
760
761 static double
762 get_sync_ipts(const AVOutputStream *ost)
763 {
764 const AVInputStream *ist = ost->sync_ist;
765 return (double)(ist->pts - start_time)/AV_TIME_BASE;
766 }
767
768 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
769 int ret;
770
771 while(bsfc){
772 AVPacket new_pkt= *pkt;
773 int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
774 &new_pkt.data, &new_pkt.size,
775 pkt->data, pkt->size,
776 pkt->flags & AV_PKT_FLAG_KEY);
777 if(a>0){
778 av_free_packet(pkt);
779 new_pkt.destruct= av_destruct_packet;
780 } else if(a<0){
781 fprintf(stderr, "%s failed for stream %d, codec %s",
782 bsfc->filter->name, pkt->stream_index,
783 avctx->codec ? avctx->codec->name : "copy");
784 print_error("", a);
785 if (exit_on_error)
786 av_exit(1);
787 }
788 *pkt= new_pkt;
789
790 bsfc= bsfc->next;
791 }
792
793 ret= av_interleaved_write_frame(s, pkt);
794 if(ret < 0){
795 print_error("av_interleaved_write_frame()", ret);
796 av_exit(1);
797 }
798 }
799
800 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
801
802 static void do_audio_out(AVFormatContext *s,
803 AVOutputStream *ost,
804 AVInputStream *ist,
805 unsigned char *buf, int size)
806 {
807 uint8_t *buftmp;
808 int64_t audio_out_size, audio_buf_size;
809 int64_t allocated_for_size= size;
810
811 int size_out, frame_bytes, ret;
812 AVCodecContext *enc= ost->st->codec;
813 AVCodecContext *dec= ist->st->codec;
814 int osize= av_get_bits_per_sample_format(enc->sample_fmt)/8;
815 int isize= av_get_bits_per_sample_format(dec->sample_fmt)/8;
816 const int coded_bps = av_get_bits_per_sample(enc->codec->id);
817
818 need_realloc:
819 audio_buf_size= (allocated_for_size + isize*dec->channels - 1) / (isize*dec->channels);
820 audio_buf_size= (audio_buf_size*enc->sample_rate + dec->sample_rate) / dec->sample_rate;
821 audio_buf_size= audio_buf_size*2 + 10000; //safety factors for the deprecated resampling API
822 audio_buf_size*= osize*enc->channels;
823
824 audio_out_size= FFMAX(audio_buf_size, enc->frame_size * osize * enc->channels);
825 if(coded_bps > 8*osize)
826 audio_out_size= audio_out_size * coded_bps / (8*osize);
827 audio_out_size += FF_MIN_BUFFER_SIZE;
828
829 if(audio_out_size > INT_MAX || audio_buf_size > INT_MAX){
830 fprintf(stderr, "Buffer sizes too large\n");
831 av_exit(1);
832 }
833
834 av_fast_malloc(&audio_buf, &allocated_audio_buf_size, audio_buf_size);
835 av_fast_malloc(&audio_out, &allocated_audio_out_size, audio_out_size);
836 if (!audio_buf || !audio_out){
837 fprintf(stderr, "Out of memory in do_audio_out\n");
838 av_exit(1);
839 }
840
841 if (enc->channels != dec->channels)
842 ost->audio_resample = 1;
843
844 if (ost->audio_resample && !ost->resample) {
845 if (dec->sample_fmt != SAMPLE_FMT_S16)
846 fprintf(stderr, "Warning, using s16 intermediate sample format for resampling\n");
847 ost->resample = av_audio_resample_init(enc->channels, dec->channels,
848 enc->sample_rate, dec->sample_rate,
849 enc->sample_fmt, dec->sample_fmt,
850 16, 10, 0, 0.8);
851 if (!ost->resample) {
852 fprintf(stderr, "Can not resample %d channels @ %d Hz to %d channels @ %d Hz\n",
853 dec->channels, dec->sample_rate,
854 enc->channels, enc->sample_rate);
855 av_exit(1);
856 }
857 }
858
859 #define MAKE_SFMT_PAIR(a,b) ((a)+SAMPLE_FMT_NB*(b))
860 if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt &&
861 MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt)!=ost->reformat_pair) {
862 if (ost->reformat_ctx)
863 av_audio_convert_free(ost->reformat_ctx);
864 ost->reformat_ctx = av_audio_convert_alloc(enc->sample_fmt, 1,
865 dec->sample_fmt, 1, NULL, 0);
866 if (!ost->reformat_ctx) {
867 fprintf(stderr, "Cannot convert %s sample format to %s sample format\n",
868 avcodec_get_sample_fmt_name(dec->sample_fmt),
869 avcodec_get_sample_fmt_name(enc->sample_fmt));
870 av_exit(1);
871 }
872 ost->reformat_pair=MAKE_SFMT_PAIR(enc->sample_fmt,dec->sample_fmt);
873 }
874
875 if(audio_sync_method){
876 double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
877 - av_fifo_size(ost->fifo)/(ost->st->codec->channels * 2);
878 double idelta= delta*ist->st->codec->sample_rate / enc->sample_rate;
879 int byte_delta= ((int)idelta)*2*ist->st->codec->channels;
880
881 //FIXME resample delay
882 if(fabs(delta) > 50){
883 if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
884 if(byte_delta < 0){
885 byte_delta= FFMAX(byte_delta, -size);
886 size += byte_delta;
887 buf -= byte_delta;
888 if(verbose > 2)
889 fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
890 if(!size)
891 return;
892 ist->is_start=0;
893 }else{
894 static uint8_t *input_tmp= NULL;
895 input_tmp= av_realloc(input_tmp, byte_delta + size);
896
897 if(byte_delta > allocated_for_size - size){
898 allocated_for_size= byte_delta + (int64_t)size;
899 goto need_realloc;
900 }
901 ist->is_start=0;
902
903 memset(input_tmp, 0, byte_delta);
904 memcpy(input_tmp + byte_delta, buf, size);
905 buf= input_tmp;
906 size += byte_delta;
907 if(verbose > 2)
908 fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
909 }
910 }else if(audio_sync_method>1){
911 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
912 assert(ost->audio_resample);
913 if(verbose > 2)
914 fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
915 // fprintf(stderr, "drift:%f len:%d opts:%"PRId64" ipts:%"PRId64" fifo:%d\n", delta, -1, ost->sync_opts, (int64_t)(get_sync_ipts(ost) * enc->sample_rate), av_fifo_size(ost->fifo)/(ost->st->codec->channels * 2));
916 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
917 }
918 }
919 }else
920 ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
921 - av_fifo_size(ost->fifo)/(ost->st->codec->channels * 2); //FIXME wrong
922
923 if (ost->audio_resample) {
924 buftmp = audio_buf;
925 size_out = audio_resample(ost->resample,
926 (short *)buftmp, (short *)buf,
927 size / (ist->st->codec->channels * isize));
928 size_out = size_out * enc->channels * osize;
929 } else {
930 buftmp = buf;
931 size_out = size;
932 }
933
934 if (!ost->audio_resample && dec->sample_fmt!=enc->sample_fmt) {
935 const void *ibuf[6]= {buftmp};
936 void *obuf[6]= {audio_buf};
937 int istride[6]= {isize};
938 int ostride[6]= {osize};
939 int len= size_out/istride[0];
940 if (av_audio_convert(ost->reformat_ctx, obuf, ostride, ibuf, istride, len)<0) {
941 printf("av_audio_convert() failed\n");
942 if (exit_on_error)
943 av_exit(1);
944 return;
945 }
946 buftmp = audio_buf;
947 size_out = len*osize;
948 }
949
950 /* now encode as many frames as possible */
951 if (enc->frame_size > 1) {
952 /* output resampled raw samples */
953 if (av_fifo_realloc2(ost->fifo, av_fifo_size(ost->fifo) + size_out) < 0) {
954 fprintf(stderr, "av_fifo_realloc2() failed\n");
955 av_exit(1);
956 }
957 av_fifo_generic_write(ost->fifo, buftmp, size_out, NULL);
958
959 frame_bytes = enc->frame_size * osize * enc->channels;
960
961 while (av_fifo_size(ost->fifo) >= frame_bytes) {
962 AVPacket pkt;
963 av_init_packet(&pkt);
964
965 av_fifo_generic_read(ost->fifo, audio_buf, frame_bytes, NULL);
966
967 //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
968
969 ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
970 (short *)audio_buf);
971 if (ret < 0) {
972 fprintf(stderr, "Audio encoding failed\n");
973 av_exit(1);
974 }
975 audio_size += ret;
976 pkt.stream_index= ost->index;
977 pkt.data= audio_out;
978 pkt.size= ret;
979 if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
980 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
981 pkt.flags |= AV_PKT_FLAG_KEY;
982 write_frame(s, &pkt, ost->st->codec, bitstream_filters[ost->file_index][pkt.stream_index]);
983
984 ost->sync_opts += enc->frame_size;
985 }
986 } else {
987 AVPacket pkt;
988 av_init_packet(&pkt);
989
990 ost->sync_opts += size_out / (osize * enc->channels);
991
992 /* output a pcm frame */
993 /* determine the size of the coded buffer */
994 size_out /= osize;
995 if (coded_bps)
996 size_out = size_out*coded_bps/8;
997
998 if(size_out > audio_out_size){
999 fprintf(stderr, "Internal error, buffer size too small\n");
1000 av_exit(1);
1001 }
1002
1003 //FIXME pass ost->sync_opts as AVFrame.pts in avcodec_encode_audio()
1004 ret = avcodec_encode_audio(enc, audio_out, size_out,
1005 (short *)buftmp);
1006 if (ret < 0) {
1007 fprintf(stderr, "Audio encoding failed\n");
1008 av_exit(1);
1009 }
1010 audio_size += ret;
1011 pkt.stream_index= ost->index;
1012 pkt.data= audio_out;
1013 pkt.size= ret;
1014 if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1015 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1016 pkt.flags |= AV_PKT_FLAG_KEY;
1017 write_frame(s, &pkt, ost->st->codec, bitstream_filters[ost->file_index][pkt.stream_index]);
1018 }
1019 }
1020
1021 static void pre_process_video_frame(AVInputStream *ist, AVPicture *picture, void **bufp)
1022 {
1023 AVCodecContext *dec;
1024 AVPicture *picture2;
1025 AVPicture picture_tmp;
1026 uint8_t *buf = 0;
1027
1028 dec = ist->st->codec;
1029
1030 /* deinterlace : must be done before any resize */
1031 if (do_deinterlace) {
1032 int size;
1033
1034 /* create temporary picture */
1035 size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
1036 buf = av_malloc(size);
1037 if (!buf)
1038 return;
1039
1040 picture2 = &picture_tmp;
1041 avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
1042
1043 if(avpicture_deinterlace(picture2, picture,
1044 dec->pix_fmt, dec->width, dec->height) < 0) {
1045 /* if error, do not deinterlace */
1046 fprintf(stderr, "Deinterlacing failed\n");
1047 av_free(buf);
1048 buf = NULL;
1049 picture2 = picture;
1050 }
1051 } else {
1052 picture2 = picture;
1053 }
1054
1055 if (picture != picture2)
1056 *picture = *picture2;
1057 *bufp = buf;
1058 }
1059
1060 /* we begin to correct av delay at this threshold */
1061 #define AV_DELAY_MAX 0.100
1062
1063 static void do_subtitle_out(AVFormatContext *s,
1064 AVOutputStream *ost,
1065 AVInputStream *ist,
1066 AVSubtitle *sub,
1067 int64_t pts)
1068 {
1069 static uint8_t *subtitle_out = NULL;
1070 int subtitle_out_max_size = 1024 * 1024;
1071 int subtitle_out_size, nb, i;
1072 AVCodecContext *enc;
1073 AVPacket pkt;
1074
1075 if (pts == AV_NOPTS_VALUE) {
1076 fprintf(stderr, "Subtitle packets must have a pts\n");
1077 if (exit_on_error)
1078 av_exit(1);
1079 return;
1080 }
1081
1082 enc = ost->st->codec;
1083
1084 if (!subtitle_out) {
1085 subtitle_out = av_malloc(subtitle_out_max_size);
1086 }
1087
1088 /* Note: DVB subtitle need one packet to draw them and one other
1089 packet to clear them */
1090 /* XXX: signal it in the codec context ? */
1091 if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
1092 nb = 2;
1093 else
1094 nb = 1;
1095
1096 for(i = 0; i < nb; i++) {
1097 sub->pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q);
1098 // start_display_time is required to be 0
1099 sub->pts += av_rescale_q(sub->start_display_time, (AVRational){1, 1000}, AV_TIME_BASE_Q);
1100 sub->end_display_time -= sub->start_display_time;
1101 sub->start_display_time = 0;
1102 subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
1103 subtitle_out_max_size, sub);
1104 if (subtitle_out_size < 0) {
1105 fprintf(stderr, "Subtitle encoding failed\n");
1106 av_exit(1);
1107 }
1108
1109 av_init_packet(&pkt);
1110 pkt.stream_index = ost->index;
1111 pkt.data = subtitle_out;
1112 pkt.size = subtitle_out_size;
1113 pkt.pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
1114 if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
1115 /* XXX: the pts correction is handled here. Maybe handling
1116 it in the codec would be better */
1117 if (i == 0)
1118 pkt.pts += 90 * sub->start_display_time;
1119 else
1120 pkt.pts += 90 * sub->end_display_time;
1121 }
1122 write_frame(s, &pkt, ost->st->codec, bitstream_filters[ost->file_index][pkt.stream_index]);
1123 }
1124 }
1125
1126 static int bit_buffer_size= 1024*256;
1127 static uint8_t *bit_buffer= NULL;
1128
1129 static void do_video_out(AVFormatContext *s,
1130 AVOutputStream *ost,
1131 AVInputStream *ist,
1132 AVFrame *in_picture,
1133 int *frame_size)
1134 {
1135 int nb_frames, i, ret;
1136 #if !CONFIG_AVFILTER
1137 int64_t topBand, bottomBand, leftBand, rightBand;
1138 #endif
1139 AVFrame *final_picture, *formatted_picture, *resampling_dst, *padding_src;
1140 AVFrame picture_crop_temp, picture_pad_temp;
1141 AVCodecContext *enc, *dec;
1142 double sync_ipts;
1143
1144 avcodec_get_frame_defaults(&picture_crop_temp);
1145 avcodec_get_frame_defaults(&picture_pad_temp);
1146
1147 enc = ost->st->codec;
1148 dec = ist->st->codec;
1149
1150 sync_ipts = get_sync_ipts(ost) / av_q2d(enc->time_base);
1151
1152 /* by default, we output a single frame */
1153 nb_frames = 1;
1154
1155 *frame_size = 0;
1156
1157 if(video_sync_method){
1158 double vdelta = sync_ipts - ost->sync_opts;
1159 //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
1160 if (vdelta < -1.1)
1161 nb_frames = 0;
1162 else if (video_sync_method == 2 || (video_sync_method<0 && (s->oformat->flags & AVFMT_VARIABLE_FPS))){
1163 if(vdelta<=-0.6){
1164 nb_frames=0;
1165 }else if(vdelta>0.6)
1166 ost->sync_opts= lrintf(sync_ipts);
1167 }else if (vdelta > 1.1)
1168 nb_frames = lrintf(vdelta);
1169 //fprintf(stderr, "vdelta:%f, ost->sync_opts:%"PRId64", ost->sync_ipts:%f nb_frames:%d\n", vdelta, ost->sync_opts, get_sync_ipts(ost), nb_frames);
1170 if (nb_frames == 0){
1171 ++nb_frames_drop;
1172 if (verbose>2)
1173 fprintf(stderr, "*** drop!\n");
1174 }else if (nb_frames > 1) {
1175 nb_frames_dup += nb_frames - 1;
1176 if (verbose>2)
1177 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
1178 }
1179 }else
1180 ost->sync_opts= lrintf(sync_ipts);
1181
1182 nb_frames= FFMIN(nb_frames, max_frames[AVMEDIA_TYPE_VIDEO] - ost->frame_number);
1183 if (nb_frames <= 0)
1184 return;
1185
1186 #if CONFIG_AVFILTER
1187 formatted_picture = in_picture;
1188 #else
1189 if (ost->video_crop) {
1190 if (av_picture_crop((AVPicture *)&picture_crop_temp, (AVPicture *)in_picture, dec->pix_fmt, ost->topBand, ost->leftBand) < 0) {
1191 fprintf(stderr, "error cropping picture\n");
1192 if (exit_on_error)
1193 av_exit(1);
1194 return;
1195 }
1196 formatted_picture = &picture_crop_temp;
1197 } else {
1198 formatted_picture = in_picture;
1199 }
1200 #endif
1201
1202 final_picture = formatted_picture;
1203 padding_src = formatted_picture;
1204 resampling_dst = &ost->pict_tmp;
1205
1206 if( (ost->resample_height != (ist->st->codec->height - (ost->topBand + ost->bottomBand)))
1207 || (ost->resample_width != (ist->st->codec->width - (ost->leftBand + ost->rightBand)))
1208 || (ost->resample_pix_fmt!= ist->st->codec->pix_fmt) ) {
1209
1210 fprintf(stderr,"Input Stream #%d.%d frame size changed to %dx%d, %s\n", ist->file_index, ist->index, ist->st->codec->width, ist->st->codec->height,avcodec_get_pix_fmt_name(ist->st->codec->pix_fmt));
1211 if(!ost->video_resample)
1212 av_exit(1);
1213 }
1214
1215 #if !CONFIG_AVFILTER
1216 if (ost->video_resample) {
1217 padding_src = NULL;
1218 final_picture = &ost->pict_tmp;
1219 if( (ost->resample_height != (ist->st->codec->height - (ost->topBand + ost->bottomBand)))
1220 || (ost->resample_width != (ist->st->codec->width - (ost->leftBand + ost->rightBand)))
1221 || (ost->resample_pix_fmt!= ist->st->codec->pix_fmt) ) {
1222
1223 /* keep bands proportional to the frame size */
1224 topBand = ((int64_t)ist->st->codec->height * ost->original_topBand / ost->original_height) & ~1;
1225 bottomBand = ((int64_t)ist->st->codec->height * ost->original_bottomBand / ost->original_height) & ~1;
1226 leftBand = ((int64_t)ist->st->codec->width * ost->original_leftBand / ost->original_width) & ~1;
1227 rightBand = ((int64_t)ist->st->codec->width * ost->original_rightBand / ost->original_width) & ~1;
1228
1229 /* sanity check to ensure no bad band sizes sneak in */
1230 assert(topBand <= INT_MAX && topBand >= 0);
1231 assert(bottomBand <= INT_MAX && bottomBand >= 0);
1232 assert(leftBand <= INT_MAX && leftBand >= 0);
1233 assert(rightBand <= INT_MAX && rightBand >= 0);
1234
1235 ost->topBand = topBand;
1236 ost->bottomBand = bottomBand;
1237 ost->leftBand = leftBand;
1238 ost->rightBand = rightBand;
1239
1240 ost->resample_height = ist->st->codec->height - (ost->topBand + ost->bottomBand);
1241 ost->resample_width = ist->st->codec->width - (ost->leftBand + ost->rightBand);
1242 ost->resample_pix_fmt= ist->st->codec->pix_fmt;
1243
1244 /* initialize a new scaler context */
1245 sws_freeContext(ost->img_resample_ctx);
1246 sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
1247 ost->img_resample_ctx = sws_getContext(
1248 ist->st->codec->width - (ost->leftBand + ost->rightBand),
1249 ist->st->codec->height - (ost->topBand + ost->bottomBand),
1250 ist->st->codec->pix_fmt,
1251 ost->st->codec->width,
1252 ost->st->codec->height,
1253 ost->st->codec->pix_fmt,
1254 sws_flags, NULL, NULL, NULL);
1255 if (ost->img_resample_ctx == NULL) {
1256 fprintf(stderr, "Cannot get resampling context\n");
1257 av_exit(1);
1258 }
1259 }
1260 sws_scale(ost->img_resample_ctx, formatted_picture->data, formatted_picture->linesize,
1261 0, ost->resample_height, resampling_dst->data, resampling_dst->linesize);
1262 }
1263 #endif
1264
1265 /* duplicates frame if needed */
1266 for(i=0;i<nb_frames;i++) {
1267 AVPacket pkt;
1268 av_init_packet(&pkt);
1269 pkt.stream_index= ost->index;
1270
1271 if (s->oformat->flags & AVFMT_RAWPICTURE) {
1272 /* raw pictures are written as AVPicture structure to
1273 avoid any copies. We support temorarily the older
1274 method. */
1275 AVFrame* old_frame = enc->coded_frame;
1276 enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
1277 pkt.data= (uint8_t *)final_picture;
1278 pkt.size= sizeof(AVPicture);
1279 pkt.pts= av_rescale_q(ost->sync_opts, enc->time_base, ost->st->time_base);
1280 pkt.flags |= AV_PKT_FLAG_KEY;
1281
1282 write_frame(s, &pkt, ost->st->codec, bitstream_filters[ost->file_index][pkt.stream_index]);
1283 enc->coded_frame = old_frame;
1284 } else {
1285 AVFrame big_picture;
1286
1287 big_picture= *final_picture;
1288 /* better than nothing: use input picture interlaced
1289 settings */
1290 big_picture.interlaced_frame = in_picture->interlaced_frame;
1291 if(avcodec_opts[AVMEDIA_TYPE_VIDEO]->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)){
1292 if(top_field_first == -1)
1293 big_picture.top_field_first = in_picture->top_field_first;
1294 else
1295 big_picture.top_field_first = top_field_first;
1296 }
1297
1298 /* handles sameq here. This is not correct because it may
1299 not be a global option */
1300 if (same_quality) {
1301 big_picture.quality = ist->st->quality;
1302 }else
1303 big_picture.quality = ost->st->quality;
1304 if(!me_threshold)
1305 big_picture.pict_type = 0;
1306 // big_picture.pts = AV_NOPTS_VALUE;
1307 big_picture.pts= ost->sync_opts;
1308 // big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
1309 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
1310 ret = avcodec_encode_video(enc,
1311 bit_buffer, bit_buffer_size,
1312 &big_picture);
1313 if (ret < 0) {
1314 fprintf(stderr, "Video encoding failed\n");
1315 av_exit(1);
1316 }
1317
1318 if(ret>0){
1319 pkt.data= bit_buffer;
1320 pkt.size= ret;
1321 if(enc->coded_frame->pts != AV_NOPTS_VALUE)
1322 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1323 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
1324 pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
1325 pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
1326
1327 if(enc->coded_frame->key_frame)
1328 pkt.flags |= AV_PKT_FLAG_KEY;
1329 write_frame(s, &pkt, ost->st->codec, bitstream_filters[ost->file_index][pkt.stream_index]);
1330 *frame_size = ret;
1331 video_size += ret;
1332 //fprintf(stderr,"\nFrame: %3d size: %5d type: %d",
1333 // enc->frame_number-1, ret, enc->pict_type);
1334 /* if two pass, output log */
1335 if (ost->logfile && enc->stats_out) {
1336 fprintf(ost->logfile, "%s", enc->stats_out);
1337 }
1338 }
1339 }
1340 ost->sync_opts++;
1341 ost->frame_number++;
1342 }
1343 }
1344
1345 static double psnr(double d){
1346 return -10.0*log(d)/log(10.0);
1347 }
1348
1349 static void do_video_stats(AVFormatContext *os, AVOutputStream *ost,
1350 int frame_size)
1351 {
1352 AVCodecContext *enc;
1353 int frame_number;
1354 double ti1, bitrate, avg_bitrate;
1355
1356 /* this is executed just the first time do_video_stats is called */
1357 if (!vstats_file) {
1358 vstats_file = fopen(vstats_filename, "w");
1359 if (!vstats_file) {
1360 perror("fopen");
1361 av_exit(1);
1362 }
1363 }
1364
1365 enc = ost->st->codec;
1366 if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1367 frame_number = ost->frame_number;
1368 fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1369 if (enc->flags&CODEC_FLAG_PSNR)
1370 fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
1371
1372 fprintf(vstats_file,"f_size= %6d ", frame_size);
1373 /* compute pts value */
1374 ti1 = ost->sync_opts * av_q2d(enc->time_base);
1375 if (ti1 < 0.01)
1376 ti1 = 0.01;
1377
1378 bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1379 avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1380 fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1381 (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1382 fprintf(vstats_file,"type= %c\n", av_get_pict_type_char(enc->coded_frame->pict_type));
1383 }
1384 }
1385
1386 static void print_report(AVFormatContext **output_files,
1387 AVOutputStream **ost_table, int nb_ostreams,
1388 int is_last_report)
1389 {
1390 char buf[1024];
1391 AVOutputStream *ost;
1392 AVFormatContext *oc;
1393 int64_t total_size;
1394 AVCodecContext *enc;
1395 int frame_number, vid, i;
1396 double bitrate, ti1, pts;
1397 static int64_t last_time = -1;
1398 static int qp_histogram[52];
1399
1400 if (!is_last_report) {
1401 int64_t cur_time;
1402 /* display the report every 0.5 seconds */
1403 cur_time = av_gettime();
1404 if (last_time == -1) {
1405 last_time = cur_time;
1406 return;
1407 }
1408 if ((cur_time - last_time) < 500000)
1409 return;
1410 last_time = cur_time;
1411 }
1412
1413
1414 oc = output_files[0];
1415
1416 total_size = url_fsize(oc->pb);
1417 if(total_size<0) // FIXME improve url_fsize() so it works with non seekable output too
1418 total_size= url_ftell(oc->pb);
1419
1420 buf[0] = '\0';
1421 ti1 = 1e10;
1422 vid = 0;
1423 for(i=0;i<nb_ostreams;i++) {
1424 ost = ost_table[i];
1425 enc = ost->st->codec;
1426 if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1427 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ",
1428 !ost->st->stream_copy ?
1429 enc->coded_frame->quality/(float)FF_QP2LAMBDA : -1);
1430 }
1431 if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1432 float t = (av_gettime()-timer_start) / 1000000.0;
1433
1434 frame_number = ost->frame_number;
1435 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
1436 frame_number, (t>1)?(int)(frame_number/t+0.5) : 0,
1437 !ost->st->stream_copy ?
1438 enc->coded_frame->quality/(float)FF_QP2LAMBDA : -1);
1439 if(is_last_report)
1440 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1441 if(qp_hist){
1442 int j;
1443 int qp= lrintf(enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1444 if(qp>=0 && qp<FF_ARRAY_ELEMS(qp_histogram))
1445 qp_histogram[qp]++;
1446 for(j=0; j<32; j++)
1447 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1448 }
1449 if (enc->flags&CODEC_FLAG_PSNR){
1450 int j;
1451 double error, error_sum=0;
1452 double scale, scale_sum=0;
1453 char type[3]= {'Y','U','V'};
1454 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1455 for(j=0; j<3; j++){
1456 if(is_last_report){
1457 error= enc->error[j];
1458 scale= enc->width*enc->height*255.0*255.0*frame_number;
1459 }else{
1460 error= enc->coded_frame->error[j];
1461 scale= enc->width*enc->height*255.0*255.0;
1462 }
1463 if(j) scale/=4;
1464 error_sum += error;
1465 scale_sum += scale;
1466 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1467 }
1468 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1469 }
1470 vid = 1;
1471 }
1472 /* compute min output value */
1473 pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
1474 if ((pts < ti1) && (pts > 0))
1475 ti1 = pts;
1476 }
1477 if (ti1 < 0.01)
1478 ti1 = 0.01;
1479
1480 if (verbose || is_last_report) {
1481 bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1482
1483 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1484 "size=%8.0fkB time=%0.2f bitrate=%6.1fkbits/s",
1485 (double)total_size / 1024, ti1, bitrate);
1486
1487 if (nb_frames_dup || nb_frames_drop)
1488 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1489 nb_frames_dup, nb_frames_drop);
1490
1491 if (verbose >= 0)
1492 fprintf(stderr, "%s \r", buf);
1493
1494 fflush(stderr);
1495 }
1496
1497 if (is_last_report && verbose >= 0){
1498 int64_t raw= audio_size + video_size + extra_size;
1499 fprintf(stderr, "\n");
1500 fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1501 video_size/1024.0,
1502 audio_size/1024.0,
1503 extra_size/1024.0,
1504 100.0*(total_size - raw)/raw
1505 );
1506 }
1507 }
1508
1509 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1510 static int output_packet(AVInputStream *ist, int ist_index,
1511 AVOutputStream **ost_table, int nb_ostreams,
1512 const AVPacket *pkt)
1513 {
1514 AVFormatContext *os;
1515 AVOutputStream *ost;
1516 int ret, i;
1517 int got_picture;
1518 AVFrame picture;
1519 void *buffer_to_free;
1520 static unsigned int samples_size= 0;
1521 AVSubtitle subtitle, *subtitle_to_free;
1522 int got_subtitle;
1523 #if CONFIG_AVFILTER
1524 int frame_available;
1525 #endif
1526
1527 AVPacket avpkt;
1528 int bps = av_get_bits_per_sample_format(ist->st->codec->sample_fmt)>>3;
1529
1530 if(ist->next_pts == AV_NOPTS_VALUE)
1531 ist->next_pts= ist->pts;
1532
1533 if (pkt == NULL) {
1534 /* EOF handling */
1535 av_init_packet(&avpkt);
1536 avpkt.data = NULL;
1537 avpkt.size = 0;
1538 goto handle_eof;
1539 } else {
1540 avpkt = *pkt;
1541 }
1542
1543 if(pkt->dts != AV_NOPTS_VALUE)
1544 ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1545
1546 //while we have more to decode or while the decoder did output something on EOF
1547 while (avpkt.size > 0 || (!pkt && ist->next_pts != ist->pts)) {
1548 uint8_t *data_buf, *decoded_data_buf;
1549 int data_size, decoded_data_size;
1550 handle_eof:
1551 ist->pts= ist->next_pts;
1552
1553 if(avpkt.size && avpkt.size != pkt->size &&
1554 ((!ist->showed_multi_packet_warning && verbose>0) || verbose>1)){
1555 fprintf(stderr, "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1556 ist->showed_multi_packet_warning=1;
1557 }
1558
1559 /* decode the packet if needed */
1560 decoded_data_buf = NULL; /* fail safe */
1561 decoded_data_size= 0;
1562 data_buf = avpkt.data;
1563 data_size = avpkt.size;
1564 subtitle_to_free = NULL;
1565 if (ist->decoding_needed) {
1566 switch(ist->st->codec->codec_type) {
1567 case AVMEDIA_TYPE_AUDIO:{
1568 if(pkt && samples_size < FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE)) {
1569 samples_size = FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE);
1570 av_free(samples);
1571 samples= av_malloc(samples_size);
1572 }
1573 decoded_data_size= samples_size;
1574 /* XXX: could avoid copy if PCM 16 bits with same
1575 endianness as CPU */
1576 ret = avcodec_decode_audio3(ist->st->codec, samples, &decoded_data_size,
1577 &avpkt);
1578 if (ret < 0)
1579 goto fail_decode;
1580 avpkt.data += ret;
1581 avpkt.size -= ret;
1582 data_size = ret;
1583 /* Some bug in mpeg audio decoder gives */
1584 /* decoded_data_size < 0, it seems they are overflows */
1585 if (decoded_data_size <= 0) {
1586 /* no audio frame */
1587 continue;
1588 }
1589 decoded_data_buf = (uint8_t *)samples;
1590 ist->next_pts += ((int64_t)AV_TIME_BASE/bps * decoded_data_size) /
1591 (ist->st->codec->sample_rate * ist->st->codec->channels);
1592 break;}
1593 case AVMEDIA_TYPE_VIDEO:
1594 decoded_data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1595 /* XXX: allocate picture correctly */
1596 avcodec_get_frame_defaults(&picture);
1597
1598 ret = avcodec_decode_video2(ist->st->codec,
1599 &picture, &got_picture, &avpkt);
1600 ist->st->quality= picture.quality;
1601 if (ret < 0)
1602 goto fail_decode;
1603 if (!got_picture) {
1604 /* no picture yet */
1605 goto discard_packet;
1606 }
1607 if (ist->st->codec->time_base.num != 0) {
1608 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1609 ist->next_pts += ((int64_t)AV_TIME_BASE *
1610 ist->st->codec->time_base.num * ticks) /
1611 ist->st->codec->time_base.den;
1612 }
1613 avpkt.size = 0;
1614 break;
1615 case AVMEDIA_TYPE_SUBTITLE:
1616 ret = avcodec_decode_subtitle2(ist->st->codec,
1617 &subtitle, &got_subtitle, &avpkt);
1618 if (ret < 0)
1619 goto fail_decode;
1620 if (!got_subtitle) {
1621 goto discard_packet;
1622 }
1623 subtitle_to_free = &subtitle;
1624 avpkt.size = 0;
1625 break;
1626 default:
1627 goto fail_decode;
1628 }
1629 } else {
1630 switch(ist->st->codec->codec_type) {
1631 case AVMEDIA_TYPE_AUDIO:
1632 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1633 ist->st->codec->sample_rate;
1634 break;
1635 case AVMEDIA_TYPE_VIDEO:
1636 if (ist->st->codec->time_base.num != 0) {
1637 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1638 ist->next_pts += ((int64_t)AV_TIME_BASE *
1639 ist->st->codec->time_base.num * ticks) /
1640 ist->st->codec->time_base.den;
1641 }
1642 break;
1643 }
1644 ret = avpkt.size;
1645 avpkt.size = 0;
1646 }
1647
1648 buffer_to_free = NULL;
1649 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1650 pre_process_video_frame(ist, (AVPicture *)&picture,
1651 &buffer_to_free);
1652 }
1653
1654 #if CONFIG_AVFILTER
1655 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ist->input_video_filter) {
1656 // add it to be filtered
1657 av_vsrc_buffer_add_frame(ist->input_video_filter, &picture,
1658 ist->pts,
1659 ist->st->codec->sample_aspect_ratio);
1660 }
1661 #endif
1662
1663 // preprocess audio (volume)
1664 if (ist->st->codec->codec_type == AVMEDIA_TYPE_AUDIO) {
1665 if (audio_volume != 256) {
1666 short *volp;
1667 volp = samples;
1668 for(i=0;i<(decoded_data_size / sizeof(short));i++) {
1669 int v = ((*volp) * audio_volume + 128) >> 8;
1670 if (v < -32768) v = -32768;
1671 if (v > 32767) v = 32767;
1672 *volp++ = v;
1673 }
1674 }
1675 }
1676
1677 /* frame rate emulation */
1678 if (rate_emu) {
1679 int64_t pts = av_rescale(ist->pts, 1000000, AV_TIME_BASE);
1680 int64_t now = av_gettime() - ist->start;
1681 if (pts > now)
1682 usleep(pts - now);
1683 }
1684 #if CONFIG_AVFILTER
1685 frame_available = ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO ||
1686 !ist->out_video_filter || avfilter_poll_frame(ist->out_video_filter->inputs[0]);
1687 #endif
1688 /* if output time reached then transcode raw format,
1689 encode packets and output them */
1690 if (start_time == 0 || ist->pts >= start_time)
1691 #if CONFIG_AVFILTER
1692 while (frame_available) {
1693 if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && ist->out_video_filter)
1694 get_filtered_video_pic(ist->out_video_filter, &ist->picref, &picture, &ist->pts);
1695 #endif
1696 for(i=0;i<nb_ostreams;i++) {
1697 int frame_size;
1698
1699 ost = ost_table[i];
1700 if (ost->source_index == ist_index) {
1701 os = output_files[ost->file_index];
1702
1703 /* set the input output pts pairs */
1704 //ost->sync_ipts = (double)(ist->pts + input_files_ts_offset[ist->file_index] - start_time)/ AV_TIME_BASE;
1705
1706 if (ost->encoding_needed) {
1707 assert(ist->decoding_needed);
1708 switch(ost->st->codec->codec_type) {
1709 case AVMEDIA_TYPE_AUDIO:
1710 do_audio_out(os, ost, ist, decoded_data_buf, decoded_data_size);
1711 break;
1712 case AVMEDIA_TYPE_VIDEO:
1713 #if CONFIG_AVFILTER
1714 ost->st->codec->sample_aspect_ratio = ist->picref->pixel_aspect;
1715 #endif
1716 do_video_out(os, ost, ist, &picture, &frame_size);
1717 if (vstats_filename && frame_size)
1718 do_video_stats(os, ost, frame_size);
1719 break;
1720 case AVMEDIA_TYPE_SUBTITLE:
1721 do_subtitle_out(os, ost, ist, &subtitle,
1722 pkt->pts);
1723 break;
1724 default:
1725 abort();
1726 }
1727 } else {
1728 AVFrame avframe; //FIXME/XXX remove this
1729 AVPacket opkt;
1730 int64_t ost_tb_start_time= av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1731
1732 av_init_packet(&opkt);
1733
1734 if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) && !copy_initial_nonkeyframes)
1735 continue;
1736
1737 /* no reencoding needed : output the packet directly */
1738 /* force the input stream PTS */
1739
1740 avcodec_get_frame_defaults(&avframe);
1741 ost->st->codec->coded_frame= &avframe;
1742 avframe.key_frame = pkt->flags & AV_PKT_FLAG_KEY;
1743
1744 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1745 audio_size += data_size;
1746 else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1747 video_size += data_size;
1748 ost->sync_opts++;
1749 }
1750
1751 opkt.stream_index= ost->index;
1752 if(pkt->pts != AV_NOPTS_VALUE)
1753 opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1754 else
1755 opkt.pts= AV_NOPTS_VALUE;
1756
1757 if (pkt->dts == AV_NOPTS_VALUE)
1758 opkt.dts = av_rescale_q(ist->pts, AV_TIME_BASE_Q, ost->st->time_base);
1759 else
1760 opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1761 opkt.dts -= ost_tb_start_time;
1762
1763 opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1764 opkt.flags= pkt->flags;
1765
1766 //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1767 if( ost->st->codec->codec_id != CODEC_ID_H264
1768 && ost->st->codec->codec_id != CODEC_ID_MPEG1VIDEO
1769 && ost->st->codec->codec_id != CODEC_ID_MPEG2VIDEO
1770 ) {
1771 if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & AV_PKT_FLAG_KEY))
1772 opkt.destruct= av_destruct_packet;
1773 } else {
1774 opkt.data = data_buf;
1775 opkt.size = data_size;
1776 }
1777
1778 write_frame(os, &opkt, ost->st->codec, bitstream_filters[ost->file_index][opkt.stream_index]);
1779 ost->st->codec->frame_number++;
1780 ost->frame_number++;
1781 av_free_packet(&opkt);
1782 }
1783 }
1784 #if CONFIG_AVFILTER
1785 frame_available = (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) &&
1786 ist->out_video_filter && avfilter_poll_frame(ist->out_video_filter->inputs[0]);
1787 #endif
1788 }
1789
1790 #if CONFIG_AVFILTER
1791 if(ist->picref)
1792 avfilter_unref_pic(ist->picref);
1793 }
1794 #endif
1795 av_free(buffer_to_free);
1796 /* XXX: allocate the subtitles in the codec ? */
1797 if (subtitle_to_free) {
1798 if (subtitle_to_free->rects != NULL) {
1799 for (i = 0; i < subtitle_to_free->num_rects; i++) {
1800 av_freep(&subtitle_to_free->rects[i]->pict.data[0]);
1801 av_freep(&subtitle_to_free->rects[i]->pict.data[1]);
1802 av_freep(&subtitle_to_free->rects[i]);
1803 }
1804 av_freep(&subtitle_to_free->rects);
1805 }
1806 subtitle_to_free->num_rects = 0;
1807 subtitle_to_free = NULL;
1808 }
1809 }
1810 discard_packet:
1811 if (pkt == NULL) {
1812 /* EOF handling */
1813
1814 for(i=0;i<nb_ostreams;i++) {
1815 ost = ost_table[i];
1816 if (ost->source_index == ist_index) {
1817 AVCodecContext *enc= ost->st->codec;
1818 os = output_files[ost->file_index];
1819
1820 if(ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <=1)
1821 continue;
1822 if(ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1823 continue;
1824
1825 if (ost->encoding_needed) {
1826 for(;;) {
1827 AVPacket pkt;
1828 int fifo_bytes;
1829 av_init_packet(&pkt);
1830 pkt.stream_index= ost->index;
1831
1832 switch(ost->st->codec->codec_type) {
1833 case AVMEDIA_TYPE_AUDIO:
1834 fifo_bytes = av_fifo_size(ost->fifo);
1835 ret = 0;
1836 /* encode any samples remaining in fifo */
1837 if (fifo_bytes > 0) {
1838 int osize = av_get_bits_per_sample_format(enc->sample_fmt) >> 3;
1839 int fs_tmp = enc->frame_size;
1840
1841 av_fifo_generic_read(ost->fifo, samples, fifo_bytes, NULL);
1842 if (enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1843 enc->frame_size = fifo_bytes / (osize * enc->channels);
1844 } else { /* pad */
1845 int frame_bytes = enc->frame_size*osize*enc->channels;
1846 if (samples_size < frame_bytes)
1847 av_exit(1);
1848 memset((uint8_t*)samples+fifo_bytes, 0, frame_bytes - fifo_bytes);
1849 }
1850
1851 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, samples);
1852 pkt.duration = av_rescale((int64_t)enc->frame_size*ost->st->time_base.den,
1853 ost->st->time_base.num, enc->sample_rate);
1854 enc->frame_size = fs_tmp;
1855 }
1856 if(ret <= 0) {
1857 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1858 }
1859 if (ret < 0) {
1860 fprintf(stderr, "Audio encoding failed\n");
1861 av_exit(1);
1862 }
1863 audio_size += ret;
1864 pkt.flags |= AV_PKT_FLAG_KEY;
1865 break;
1866 case AVMEDIA_TYPE_VIDEO:
1867 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1868 if (ret < 0) {
1869 fprintf(stderr, "Video encoding failed\n");
1870 av_exit(1);
1871 }
1872 video_size += ret;
1873 if(enc->coded_frame && enc->coded_frame->key_frame)
1874 pkt.flags |= AV_PKT_FLAG_KEY;
1875 if (ost->logfile && enc->stats_out) {
1876 fprintf(ost->logfile, "%s", enc->stats_out);
1877 }
1878 break;
1879 default:
1880 ret=-1;
1881 }
1882
1883 if(ret<=0)
1884 break;
1885 pkt.data= bit_buffer;
1886 pkt.size= ret;
1887 if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1888 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1889 write_frame(os, &pkt, ost->st->codec, bitstream_filters[ost->file_index][pkt.stream_index]);
1890 }
1891 }
1892 }
1893 }
1894 }
1895
1896 return 0;
1897 fail_decode:
1898 return -1;
1899 }
1900
1901 static void print_sdp(AVFormatContext **avc, int n)
1902 {
1903 char sdp[2048];
1904
1905 avf_sdp_create(avc, n, sdp, sizeof(sdp));
1906 printf("SDP:\n%s\n", sdp);
1907 fflush(stdout);
1908 }
1909
1910 static int copy_chapters(int infile, int outfile)
1911 {
1912 AVFormatContext *is = input_files[infile];
1913 AVFormatContext *os = output_files[outfile];
1914 int i;
1915
1916 for (i = 0; i < is->nb_chapters; i++) {
1917 AVChapter *in_ch = is->chapters[i], *out_ch;
1918 AVMetadataTag *t = NULL;
1919 int64_t ts_off = av_rescale_q(start_time - input_files_ts_offset[infile],
1920 AV_TIME_BASE_Q, in_ch->time_base);
1921 int64_t rt = (recording_time == INT64_MAX) ? INT64_MAX :
1922 av_rescale_q(recording_time, AV_TIME_BASE_Q, in_ch->time_base);
1923
1924
1925 if (in_ch->end < ts_off)
1926 continue;
1927 if (rt != INT64_MAX && in_ch->start > rt + ts_off)
1928 break;
1929
1930 out_ch = av_mallocz(sizeof(AVChapter));
1931 if (!out_ch)
1932 return AVERROR(ENOMEM);
1933
1934 out_ch->id = in_ch->id;
1935 out_ch->time_base = in_ch->time_base;
1936 out_ch->start = FFMAX(0, in_ch->start - ts_off);
1937 out_ch->end = FFMIN(rt, in_ch->end - ts_off);
1938
1939 while ((t = av_metadata_get(in_ch->metadata, "", t, AV_METADATA_IGNORE_SUFFIX)))
1940 av_metadata_set2(&out_ch->metadata, t->key, t->value, 0);
1941
1942 os->nb_chapters++;
1943 os->chapters = av_realloc(os->chapters, sizeof(AVChapter)*os->nb_chapters);
1944 if (!os->chapters)
1945 return AVERROR(ENOMEM);
1946 os->chapters[os->nb_chapters - 1] = out_ch;
1947 }
1948 return 0;
1949 }
1950
1951 /*
1952 * The following code is the main loop of the file converter
1953 */
1954 static int av_transcode(AVFormatContext **output_files,
1955 int nb_output_files,
1956 AVFormatContext **input_files,
1957 int nb_input_files,
1958 AVStreamMap *stream_maps, int nb_stream_maps)
1959 {
1960 int ret = 0, i, j, k, n, nb_istreams = 0, nb_ostreams = 0;
1961 AVFormatContext *is, *os;
1962 AVCodecContext *codec, *icodec;
1963 AVOutputStream *ost, **ost_table = NULL;
1964 AVInputStream *ist, **ist_table = NULL;
1965 AVInputFile *file_table;
1966 char error[1024];
1967 int key;
1968 int want_sdp = 1;
1969 uint8_t no_packet[MAX_FILES]={0};
1970 int no_packet_count=0;
1971
1972 file_table= av_mallocz(nb_input_files * sizeof(AVInputFile));
1973 if (!file_table)
1974 goto fail;
1975
1976 /* input stream init */
1977 j = 0;
1978 for(i=0;i<nb_input_files;i++) {
1979 is = input_files[i];
1980 file_table[i].ist_index = j;
1981 file_table[i].nb_streams = is->nb_streams;
1982 j += is->nb_streams;
1983 }
1984 nb_istreams = j;
1985
1986 ist_table = av_mallocz(nb_istreams * sizeof(AVInputStream *));
1987 if (!ist_table)
1988 goto fail;
1989
1990 for(i=0;i<nb_istreams;i++) {
1991 ist = av_mallocz(sizeof(AVInputStream));
1992 if (!ist)
1993 goto fail;
1994 ist_table[i] = ist;
1995 }
1996 j = 0;
1997 for(i=0;i<nb_input_files;i++) {
1998 is = input_files[i];
1999 for(k=0;k<is->nb_streams;k++) {
2000 ist = ist_table[j++];
2001 ist->st = is->streams[k];
2002 ist->file_index = i;
2003 ist->index = k;
2004 ist->discard = 1; /* the stream is discarded by default
2005 (changed later) */
2006
2007 if (rate_emu) {
2008 ist->start = av_gettime();
2009 }
2010 }
2011 }
2012
2013 /* output stream init */
2014 nb_ostreams = 0;
2015 for(i=0;i<nb_output_files;i++) {
2016 os = output_files[i];
2017 if (!os->nb_streams) {
2018 dump_format(output_files[i], i, output_files[i]->filename, 1);
2019 fprintf(stderr, "Output file #%d does not contain any stream\n", i);
2020 av_exit(1);
2021 }
2022 nb_ostreams += os->nb_streams;
2023 }
2024 if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) {
2025 fprintf(stderr, "Number of stream maps must match number of output streams\n");
2026 av_exit(1);
2027 }
2028
2029 /* Sanity check the mapping args -- do the input files & streams exist? */
2030 for(i=0;i<nb_stream_maps;i++) {
2031 int fi = stream_maps[i].file_index;
2032 int si = stream_maps[i].stream_index;
2033
2034 if (fi < 0 || fi > nb_input_files - 1 ||
2035 si < 0 || si > file_table[fi].nb_streams - 1) {
2036 fprintf(stderr,"Could not find input stream #%d.%d\n", fi, si);
2037 av_exit(1);
2038 }
2039 fi = stream_maps[i].sync_file_index;
2040 si = stream_maps[i].sync_stream_index;
2041 if (fi < 0 || fi > nb_input_files - 1 ||
2042 si < 0 || si > file_table[fi].nb_streams - 1) {
2043 fprintf(stderr,"Could not find sync stream #%d.%d\n", fi, si);
2044 av_exit(1);
2045 }
2046 }
2047
2048 ost_table = av_mallocz(sizeof(AVOutputStream *) * nb_ostreams);
2049 if (!ost_table)
2050 goto fail;
2051 for(i=0;i<nb_ostreams;i++) {
2052 ost = av_mallocz(sizeof(AVOutputStream));
2053 if (!ost)
2054 goto fail;
2055 ost_table[i] = ost;
2056 }
2057
2058 n = 0;
2059 for(k=0;k<nb_output_files;k++) {
2060 os = output_files[k];
2061 for(i=0;i<os->nb_streams;i++,n++) {
2062 int found;
2063 ost = ost_table[n];
2064 ost->file_index = k;
2065 ost->index = i;
2066 ost->st = os->streams[i];
2067 if (nb_stream_maps > 0) {
2068 ost->source_index = file_table[stream_maps[n].file_index].ist_index +
2069 stream_maps[n].stream_index;
2070
2071 /* Sanity check that the stream types match */
2072 if (ist_table[ost->source_index]->st->codec->codec_type != ost->st->codec->codec_type) {
2073 int i= ost->file_index;
2074 dump_format(output_files[i], i, output_files[i]->filename, 1);
2075 fprintf(stderr, "Codec type mismatch for mapping #%d.%d -> #%d.%d\n",
2076 stream_maps[n].file_index, stream_maps[n].stream_index,
2077 ost->file_index, ost->index);
2078 av_exit(1);
2079 }
2080
2081 } else {
2082 int best_nb_frames=-1;
2083 /* get corresponding input stream index : we select the first one with the right type */
2084 found = 0;
2085 for(j=0;j<nb_istreams;j++) {
2086 int skip=0;
2087 ist = ist_table[j];
2088 if(opt_programid){
2089 int pi,si;
2090 AVFormatContext *f= input_files[ ist->file_index ];
2091 skip=1;
2092 for(pi=0; pi<f->nb_programs; pi++){
2093 AVProgram *p= f->programs[pi];
2094 if(p->id == opt_programid)
2095 for(si=0; si<p->nb_stream_indexes; si++){
2096 if(f->streams[ p->stream_index[si] ] == ist->st)
2097 skip=0;
2098 }
2099 }
2100 }
2101 if (ist->discard && ist->st->discard != AVDISCARD_ALL && !skip &&
2102 ist->st->codec->codec_type == ost->st->codec->codec_type) {
2103 if(best_nb_frames < ist->st->codec_info_nb_frames){
2104 best_nb_frames= ist->st->codec_info_nb_frames;
2105 ost->source_index = j;
2106 found = 1;
2107 }
2108 }
2109 }
2110
2111 if (!found) {
2112 if(! opt_programid) {
2113 /* try again and reuse existing stream */
2114 for(j=0;j<nb_istreams;j++) {
2115 ist = ist_table[j];
2116 if ( ist->st->codec->codec_type == ost->st->codec->codec_type
2117 && ist->st->discard != AVDISCARD_ALL) {
2118 ost->source_index = j;
2119 found = 1;
2120 }
2121 }
2122 }
2123 if (!found) {
2124 int i= ost->file_index;
2125 dump_format(output_files[i], i, output_files[i]->filename, 1);
2126 fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
2127 ost->file_index, ost->index);
2128 av_exit(1);
2129 }
2130 }
2131 }
2132 ist = ist_table[ost->source_index];
2133 ist->discard = 0;
2134 ost->sync_ist = (nb_stream_maps > 0) ?
2135 ist_table[file_table[stream_maps[n].sync_file_index].ist_index +
2136 stream_maps[n].sync_stream_index] : ist;
2137 }
2138 }
2139
2140 /* for each output stream, we compute the right encoding parameters */
2141 for(i=0;i<nb_ostreams;i++) {
2142 AVMetadataTag *t = NULL;
2143 ost = ost_table[i];
2144 os = output_files[ost->file_index];
2145 ist = ist_table[ost->source_index];
2146
2147 codec = ost->st->codec;
2148 icodec = ist->st->codec;
2149
2150 while ((t = av_metadata_get(ist->st->metadata, "", t, AV_METADATA_IGNORE_SUFFIX))) {
2151 av_metadata_set2(&ost->st->metadata, t->key, t->value, AV_METADATA_DONT_OVERWRITE);
2152 }
2153
2154 ost->st->disposition = ist->st->disposition;
2155 codec->bits_per_raw_sample= icodec->bits_per_raw_sample;
2156 codec->chroma_sample_location = icodec->chroma_sample_location;
2157
2158 if (ost->st->stream_copy) {
2159 /* if stream_copy is selected, no need to decode or encode */
2160 codec->codec_id = icodec->codec_id;
2161 codec->codec_type = icodec->codec_type;
2162
2163 if(!codec->codec_tag){
2164 if( !os->oformat->codec_tag
2165 || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) == codec->codec_id
2166 || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
2167 codec->codec_tag = icodec->codec_tag;
2168 }
2169
2170 codec->bit_rate = icodec->bit_rate;
2171 codec->extradata= icodec->extradata;
2172 codec->extradata_size= icodec->extradata_size;
2173 if(av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base) && av_q2d(ist->st->time_base) < 1.0/1000){
2174 codec->time_base = icodec->time_base;
2175 codec->time_base.num *= icodec->ticks_per_frame;
2176 }else
2177 codec->time_base = ist->st->time_base;
2178 switch(codec->codec_type) {
2179 case AVMEDIA_TYPE_AUDIO:
2180 if(audio_volume != 256) {
2181 fprintf(stderr,"-acodec copy and -vol are incompatible (frames are not decoded)\n");
2182 av_exit(1);
2183 }
2184 codec->channel_layout = icodec->channel_layout;
2185 codec->sample_rate = icodec->sample_rate;
2186 codec->channels = icodec->channels;
2187 codec->frame_size = icodec->frame_size;
2188 codec->block_align= icodec->block_align;
2189 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
2190 codec->block_align= 0;
2191 if(codec->codec_id == CODEC_ID_AC3)
2192 codec->block_align= 0;
2193 break;
2194 case AVMEDIA_TYPE_VIDEO:
2195 codec->pix_fmt = icodec->pix_fmt;
2196 codec->width = icodec->width;
2197 codec->height = icodec->height;
2198 codec->has_b_frames = icodec->has_b_frames;
2199 break;
2200 case AVMEDIA_TYPE_SUBTITLE:
2201 codec->width = icodec->width;
2202 codec->height = icodec->height;
2203 break;
2204 default:
2205 abort();
2206 }
2207 } else {
2208 switch(codec->codec_type) {
2209 case AVMEDIA_TYPE_AUDIO:
2210 ost->fifo= av_fifo_alloc(1024);
2211 if(!ost->fifo)
2212 goto fail;
2213 ost->reformat_pair = MAKE_SFMT_PAIR(SAMPLE_FMT_NONE,SAMPLE_FMT_NONE);
2214 ost->audio_resample = codec->sample_rate != icodec->sample_rate || audio_sync_method > 1;
2215 icodec->request_channels = codec->channels;
2216 ist->decoding_needed = 1;
2217 ost->encoding_needed = 1;
2218 break;
2219 case AVMEDIA_TYPE_VIDEO:
2220 if (ost->st->codec->pix_fmt == PIX_FMT_NONE) {
2221 fprintf(stderr, "Video pixel format is unknown, stream cannot be encoded\n");
2222 av_exit(1);
2223 }
2224 ost->video_crop = ((frame_leftBand + frame_rightBand + frame_topBand + frame_bottomBand) != 0);
2225 ost->video_resample = ((codec->width != icodec->width -
2226 (frame_leftBand + frame_rightBand)) ||
2227 (codec->height != icodec->height -
2228 (frame_topBand + frame_bottomBand)) ||
2229 (codec->pix_fmt != icodec->pix_fmt));
2230 if (ost->video_crop) {
2231 ost->topBand = ost->original_topBand = frame_topBand;
2232 ost->bottomBand = ost->original_bottomBand = frame_bottomBand;
2233 ost->leftBand = ost->original_leftBand = frame_leftBand;
2234 ost->rightBand = ost->original_rightBand = frame_rightBand;
2235 }
2236 if (ost->video_resample) {
2237 avcodec_get_frame_defaults(&ost->pict_tmp);
2238 if(avpicture_alloc((AVPicture*)&ost->pict_tmp, codec->pix_fmt,
2239 codec->width, codec->height)) {
2240 fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
2241 av_exit(1);
2242 }
2243 sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
2244 ost->img_resample_ctx = sws_getContext(
2245 icodec->width - (frame_leftBand + frame_rightBand),
2246 icodec->height - (frame_topBand + frame_bottomBand),
2247 icodec->pix_fmt,
2248 codec->width,
2249 codec->height,
2250 codec->pix_fmt,
2251 sws_flags, NULL, NULL, NULL);
2252 if (ost->img_resample_ctx == NULL) {
2253 fprintf(stderr, "Cannot get resampling context\n");
2254 av_exit(1);
2255 }
2256
2257 #if !CONFIG_AVFILTER
2258 ost->original_height = icodec->height;
2259 ost->original_width = icodec->width;
2260 #endif
2261 codec->bits_per_raw_sample= 0;
2262 }
2263 ost->resample_height = icodec->height - (frame_topBand + frame_bottomBand);
2264 ost->resample_width = icodec->width - (frame_leftBand + frame_rightBand);
2265 ost->resample_pix_fmt= icodec->pix_fmt;
2266 ost->encoding_needed = 1;
2267 ist->decoding_needed = 1;
2268
2269 #if CONFIG_AVFILTER
2270 if (configure_filters(ist, ost)) {
2271 fprintf(stderr, "Error opening filters!\n");
2272 exit(1);
2273 }
2274 #endif
2275 break;
2276 case AVMEDIA_TYPE_SUBTITLE:
2277 ost->encoding_needed = 1;
2278 ist->decoding_needed = 1;
2279 break;
2280 default:
2281 abort();
2282 break;
2283 }
2284 /* two pass mode */
2285 if (ost->encoding_needed &&
2286 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
2287 char logfilename[1024];
2288 FILE *f;
2289
2290 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2291 pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2292 i);
2293 if (codec->flags & CODEC_FLAG_PASS1) {
2294 f = fopen(logfilename, "wb");
2295 if (!f) {
2296 fprintf(stderr, "Cannot write log file '%s' for pass-1 encoding: %s\n", logfilename, strerror(errno));
2297 av_exit(1);
2298 }
2299 ost->logfile = f;
2300 } else {
2301 char *logbuffer;
2302 size_t logbuffer_size;
2303 if (read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2304 fprintf(stderr, "Error reading log file '%s' for pass-2 encoding\n", logfilename);
2305 av_exit(1);
2306 }
2307 codec->stats_in = logbuffer;
2308 }
2309 }
2310 }
2311 if(codec->codec_type == AVMEDIA_TYPE_VIDEO){
2312 int size= codec->width * codec->height;
2313 bit_buffer_size= FFMAX(bit_buffer_size, 6*size + 200);
2314 }
2315 }
2316
2317 if (!bit_buffer)
2318 bit_buffer = av_malloc(bit_buffer_size);
2319 if (!bit_buffer) {
2320 fprintf(stderr, "Cannot allocate %d bytes output buffer\n",
2321 bit_buffer_size);
2322 ret = AVERROR(ENOMEM);
2323 goto fail;
2324 }
2325
2326 /* open each encoder */
2327 for(i=0;i<nb_ostreams;i++) {
2328 ost = ost_table[i];
2329 if (ost->encoding_needed) {
2330 AVCodec *codec = output_codecs[i];
2331 if (!codec)
2332 codec = avcodec_find_encoder(ost->st->codec->codec_id);
2333 if (!codec) {
2334 snprintf(error, sizeof(error), "Encoder (codec id %d) not found for output stream #%d.%d",
2335 ost->st->codec->codec_id, ost->file_index, ost->index);
2336 ret = AVERROR(EINVAL);
2337 goto dump_format;
2338 }
2339 if (avcodec_open(ost->st->codec, codec) < 0) {
2340 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2341 ost->file_index, ost->index);
2342 ret = AVERROR(EINVAL);
2343 goto dump_format;
2344 }
2345 extra_size += ost->st->codec->extradata_size;
2346 }
2347 }
2348
2349 /* open each decoder */
2350 for(i=0;i<nb_istreams;i++) {
2351 ist = ist_table[i];
2352 if (ist->decoding_needed) {
2353 AVCodec *codec = input_codecs[i];
2354 if (!codec)
2355 codec = avcodec_find_decoder(ist->st->codec->codec_id);
2356 if (!codec) {
2357 snprintf(error, sizeof(error), "Decoder (codec id %d) not found for input stream #%d.%d",
2358 ist->st->codec->codec_id, ist->file_index, ist->index);
2359 ret = AVERROR(EINVAL);
2360 goto dump_format;
2361 }
2362 if (avcodec_open(ist->st->codec, codec) < 0) {
2363 snprintf(error, sizeof(error), "Error while opening decoder for input stream #%d.%d",
2364 ist->file_index, ist->index);
2365 ret = AVERROR(EINVAL);
2366 goto dump_format;
2367 }
2368 //if (ist->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
2369 // ist->st->codec->flags |= CODEC_FLAG_REPEAT_FIELD;
2370 }
2371 }
2372
2373 /* init pts */
2374 for(i=0;i<nb_istreams;i++) {
2375 AVStream *st;
2376 ist = ist_table[i];
2377 st= ist->st;
2378 ist->pts = st->avg_frame_rate.num ? - st->codec->has_b_frames*AV_TIME_BASE / av_q2d(st->avg_frame_rate) : 0;
2379 ist->next_pts = AV_NOPTS_VALUE;
2380 ist->is_start = 1;
2381 }
2382
2383 /* set meta data information from input file if required */
2384 for (i=0;i<nb_meta_data_maps;i++) {
2385 AVFormatContext *out_file;
2386 AVFormatContext *in_file;
2387 AVMetadataTag *mtag;
2388
2389 int out_file_index = meta_data_maps[i].out_file;
2390 int in_file_index = meta_data_maps[i].in_file;
2391 if (out_file_index < 0 || out_file_index >= nb_output_files) {
2392 snprintf(error, sizeof(error), "Invalid output file index %d map_meta_data(%d,%d)",
2393 out_file_index, out_file_index, in_file_index);
2394 ret = AVERROR(EINVAL);
2395 goto dump_format;
2396 }
2397 if (in_file_index < 0 || in_file_index >= nb_input_files) {
2398 snprintf(error, sizeof(error), "Invalid input file index %d map_meta_data(%d,%d)",
2399 in_file_index, out_file_index, in_file_index);
2400 ret = AVERROR(EINVAL);
2401 goto dump_format;
2402 }
2403
2404 out_file = output_files[out_file_index];
2405 in_file = input_files[in_file_index];
2406
2407
2408 mtag=NULL;
2409 while((mtag=av_metadata_get(in_file->metadata, "", mtag, AV_METADATA_IGNORE_SUFFIX)))
2410 av_metadata_set2(&out_file->metadata, mtag->key, mtag->value, AV_METADATA_DONT_OVERWRITE);
2411 av_metadata_conv(out_file, out_file->oformat->metadata_conv,
2412 in_file->iformat->metadata_conv);
2413 }
2414
2415 /* copy chapters from the first input file that has them*/
2416 for (i = 0; i < nb_input_files; i++) {
2417 if (!input_files[i]->nb_chapters)
2418 continue;
2419
2420 for (j = 0; j < nb_output_files; j++)
2421 if ((ret = copy_chapters(i, j)) < 0)
2422 goto dump_format;
2423 }
2424
2425 /* open files and write file headers */
2426 for(i=0;i<nb_output_files;i++) {
2427 os = output_files[i];
2428 if (av_write_header(os) < 0) {
2429 snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?)", i);
2430 ret = AVERROR(EINVAL);
2431 goto dump_format;
2432 }
2433 if (strcmp(output_files[i]->oformat->name, "rtp")) {
2434 want_sdp = 0;
2435 }
2436 }
2437
2438 dump_format:
2439 /* dump the file output parameters - cannot be done before in case
2440 of stream copy */
2441 for(i=0;i<nb_output_files;i++) {
2442 dump_format(output_files[i], i, output_files[i]->filename, 1);
2443 }
2444
2445 /* dump the stream mapping */
2446 if (verbose >= 0) {
2447 fprintf(stderr, "Stream mapping:\n");
2448 for(i=0;i<nb_ostreams;i++) {
2449 ost = ost_table[i];
2450 fprintf(stderr, " Stream #%d.%d -> #%d.%d",
2451 ist_table[ost->source_index]->file_index,
2452 ist_table[ost->source_index]->index,
2453 ost->file_index,
2454 ost->index);
2455 if (ost->sync_ist != ist_table[ost->source_index])
2456 fprintf(stderr, " [sync #%d.%d]",
2457 ost->sync_ist->file_index,
2458 ost->sync_ist->index);
2459 fprintf(stderr, "\n");
2460 }
2461 }
2462
2463 if (ret) {
2464 fprintf(stderr, "%s\n", error);
2465 goto fail;
2466 }
2467
2468 if (want_sdp) {
2469 print_sdp(output_files, nb_output_files);
2470 }
2471
2472 if (!using_stdin && verbose >= 0) {
2473 fprintf(stderr, "Press [q] to stop encoding\n");
2474 url_set_interrupt_cb(decode_interrupt_cb);
2475 }
2476 term_init();
2477
2478 timer_start = av_gettime();
2479
2480 for(; received_sigterm == 0;) {
2481 int file_index, ist_index;
2482 AVPacket pkt;
2483 double ipts_min;
2484 double opts_min;
2485
2486 redo:
2487 ipts_min= 1e100;
2488 opts_min= 1e100;
2489 /* if 'q' pressed, exits */
2490 if (!using_stdin) {
2491 if (q_pressed)
2492 break;
2493 /* read_key() returns 0 on EOF */
2494 key = read_key();
2495 if (key == 'q')
2496 break;
2497 }
2498
2499 /* select the stream that we must read now by looking at the
2500 smallest output pts */
2501 file_index = -1;
2502 for(i=0;i<nb_ostreams;i++) {
2503 double ipts, opts;
2504 ost = ost_table[i];
2505 os = output_files[ost->file_index];
2506 ist = ist_table[ost->source_index];
2507 if(ist->is_past_recording_time || no_packet[ist->file_index])
2508 continue;
2509 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
2510 ipts = (double)ist->pts;
2511 if (!file_table[ist->file_index].eof_reached){
2512 if(ipts < ipts_min) {
2513 ipts_min = ipts;
2514 if(input_sync ) file_index = ist->file_index;
2515 }
2516 if(opts < opts_min) {
2517 opts_min = opts;
2518 if(!input_sync) file_index = ist->file_index;
2519 }
2520 }
2521 if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
2522 file_index= -1;
2523 break;
2524 }
2525 }
2526 /* if none, if is finished */
2527 if (file_index < 0) {
2528 if(no_packet_count){
2529 no_packet_count=0;
2530 memset(no_packet, 0, sizeof(no_packet));
2531 usleep(10000);
2532 continue;
2533 }
2534 break;
2535 }
2536
2537 /* finish if limit size exhausted */
2538 if (limit_filesize != 0 && limit_filesize < url_ftell(output_files[0]->pb))
2539 break;
2540
2541 /* read a frame from it and output it in the fifo */
2542 is = input_files[file_index];
2543 ret= av_read_frame(is, &pkt);
2544 if(ret == AVERROR(EAGAIN)){
2545 no_packet[file_index]=1;
2546 no_packet_count++;
2547 continue;
2548 }
2549 if (ret < 0) {
2550 file_table[file_index].eof_reached = 1;
2551 if (opt_shortest)
2552 break;
2553 else
2554 continue;
2555 }
2556
2557 no_packet_count=0;
2558 memset(no_packet, 0, sizeof(no_packet));
2559
2560 if (do_pkt_dump) {
2561 av_pkt_dump_log(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump);
2562 }
2563 /* the following test is needed in case new streams appear
2564 dynamically in stream : we ignore them */
2565 if (pkt.stream_index >= file_table[file_index].nb_streams)
2566 goto discard_packet;
2567 ist_index = file_table[file_index].ist_index + pkt.stream_index;
2568 ist = ist_table[ist_index];
2569 if (ist->discard)
2570 goto discard_packet;
2571
2572 if (pkt.dts != AV_NOPTS_VALUE)
2573 pkt.dts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2574 if (pkt.pts != AV_NOPTS_VALUE)
2575 pkt.pts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
2576
2577 if(input_files_ts_scale[file_index][pkt.stream_index]){
2578 if(pkt.pts != AV_NOPTS_VALUE)
2579 pkt.pts *= input_files_ts_scale[file_index][pkt.stream_index];
2580 if(pkt.dts != AV_NOPTS_VALUE)
2581 pkt.dts *= input_files_ts_scale[file_index][pkt.stream_index];
2582 }
2583
2584 // fprintf(stderr, "next:%"PRId64" dts:%"PRId64" off:%"PRId64" %d\n", ist->next_pts, pkt.dts, input_files_ts_offset[ist->file_index], ist->st->codec->codec_type);
2585 if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE
2586 && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2587 int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2588 int64_t delta= pkt_dts - ist->next_pts;
2589 if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
2590 input_files_ts_offset[ist->file_index]-= delta;
2591 if (verbose > 2)
2592 fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n", delta, input_files_ts_offset[ist->file_index]);
2593 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2594 if(pkt.pts != AV_NOPTS_VALUE)
2595 pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2596 }
2597 }
2598
2599 /* finish if recording time exhausted */
2600 if (recording_time != INT64_MAX &&
2601 av_compare_ts(pkt.pts, ist->st->time_base, recording_time + start_time, (AVRational){1, 1000000}) >= 0) {
2602 ist->is_past_recording_time = 1;
2603 goto discard_packet;
2604 }
2605
2606 //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->index, pkt.size);
2607 if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
2608
2609 if (verbose >= 0)
2610 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2611 ist->file_index, ist->index);
2612 if (exit_on_error)
2613 av_exit(1);
2614 av_free_packet(&pkt);
2615 goto redo;
2616 }
2617
2618 discard_packet:
2619 av_free_packet(&pkt);
2620
2621 /* dump report by using the output first video and audio streams */
2622 print_report(output_files, ost_table, nb_ostreams, 0);
2623 }
2624
2625 /* at the end of stream, we must flush the decoder buffers */
2626 for(i=0;i<nb_istreams;i++) {
2627 ist = ist_table[i];
2628 if (ist->decoding_needed) {
2629 output_packet(ist, i, ost_table, nb_ostreams, NULL);
2630 }
2631 }
2632
2633 term_exit();
2634
2635 /* write the trailer if needed and close file */
2636 for(i=0;i<nb_output_files;i++) {
2637 os = output_files[i];
2638 av_write_trailer(os);
2639 }
2640
2641 /* dump report by using the first video and audio streams */
2642 print_report(output_files, ost_table, nb_ostreams, 1);
2643
2644 /* close each encoder */
2645 for(i=0;i<nb_ostreams;i++) {
2646 ost = ost_table[i];
2647 if (ost->encoding_needed) {
2648 av_freep(&ost->st->codec->stats_in);
2649 avcodec_close(ost->st->codec);
2650 }
2651 }
2652
2653 /* close each decoder */
2654 for(i=0;i<nb_istreams;i++) {
2655 ist = ist_table[i];
2656 if (ist->decoding_needed) {
2657 avcodec_close(ist->st->codec);
2658 }
2659 }
2660 #if CONFIG_AVFILTER
2661 if (graph) {
2662 avfilter_graph_destroy(graph);
2663 av_freep(&graph);
2664 }
2665 #endif
2666
2667 /* finished ! */
2668 ret = 0;
2669
2670 fail:
2671 av_freep(&bit_buffer);
2672 av_free(file_table);
2673
2674 if (ist_table) {
2675 for(i=0;i<nb_istreams;i++) {
2676 ist = ist_table[i];
2677 av_free(ist);
2678 }
2679 av_free(ist_table);
2680 }
2681 if (ost_table) {
2682 for(i=0;i<nb_ostreams;i++) {
2683 ost = ost_table[i];
2684 if (ost) {
2685 if (ost->logfile) {
2686 fclose(ost->logfile);
2687 ost->logfile = NULL;
2688 }
2689 av_fifo_free(ost->fifo); /* works even if fifo is not
2690 initialized but set to zero */
2691 av_free(ost->pict_tmp.data[0]);
2692 if (ost->video_resample)
2693 sws_freeContext(ost->img_resample_ctx);
2694 if (ost->resample)
2695 audio_resample_close(ost->resample);
2696 if (ost->reformat_ctx)
2697 av_audio_convert_free(ost->reformat_ctx);
2698 av_free(ost);
2699 }
2700 }
2701 av_free(ost_table);
2702 }
2703 return ret;
2704 }
2705
2706 static void opt_format(const char *arg)
2707 {
2708 /* compatibility stuff for pgmyuv */
2709 if (!strcmp(arg, "pgmyuv")) {
2710 pgmyuv_compatibility_hack=1;
2711 // opt_image_format(arg);
2712 arg = "image2";
2713 fprintf(stderr, "pgmyuv format is deprecated, use image2\n");
2714 }
2715
2716 last_asked_format = arg;
2717 }
2718
2719 static void opt_video_rc_override_string(const char *arg)
2720 {
2721 video_rc_override_string = arg;
2722 }
2723
2724 static int opt_me_threshold(const char *opt, const char *arg)
2725 {
2726 me_threshold = parse_number_or_die(opt, arg, OPT_INT64, INT_MIN, INT_MAX);
2727 return 0;
2728 }
2729
2730 static int opt_verbose(const char *opt, const char *arg)
2731 {
2732 verbose = parse_number_or_die(opt, arg, OPT_INT64, -10, 10);
2733 return 0;
2734 }
2735
2736 static int opt_frame_rate(const char *opt, const char *arg)
2737 {
2738 if (av_parse_video_frame_rate(&frame_rate, arg) < 0) {
2739 fprintf(stderr, "Incorrect value for %s: %s\n", opt, arg);
2740 av_exit(1);
2741 }
2742 return 0;
2743 }
2744
2745 static int opt_bitrate(const char *opt, const char *arg)
2746 {
2747 int codec_type = opt[0]=='a' ? AVMEDIA_TYPE_AUDIO : AVMEDIA_TYPE_VIDEO;
2748
2749 opt_default(opt, arg);
2750
2751 if (av_get_int(avcodec_opts[codec_type], "b", NULL) < 1000)
2752 fprintf(stderr, "WARNING: The bitrate parameter is set too low. It takes bits/s as argument, not kbits/s\n");
2753
2754 return 0;
2755 }
2756
2757 static void opt_frame_crop_top(const char *arg)
2758 {
2759 frame_topBand = atoi(arg);
2760 if (frame_topBand < 0) {
2761 fprintf(stderr, "Incorrect top crop size\n");
2762 av_exit(1);
2763 }
2764 if ((frame_topBand) >= frame_height){
2765 fprintf(stderr, "Vertical crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");
2766 av_exit(1);
2767 }
2768 frame_height -= frame_topBand;
2769 }
2770
2771 static void opt_frame_crop_bottom(const char *arg)
2772 {
2773 frame_bottomBand = atoi(arg);
2774 if (frame_bottomBand < 0) {
2775 fprintf(stderr, "Incorrect bottom crop size\n");
2776 av_exit(1);
2777 }
2778 if ((frame_bottomBand) >= frame_height){
2779 fprintf(stderr, "Vertical crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");
2780 av_exit(1);
2781 }
2782 frame_height -= frame_bottomBand;
2783 }
2784
2785 static void opt_frame_crop_left(const char *arg)
2786 {
2787 frame_leftBand = atoi(arg);
2788 if (frame_leftBand < 0) {
2789 fprintf(stderr, "Incorrect left crop size\n");
2790 av_exit(1);
2791 }
2792 if ((frame_leftBand) >= frame_width){
2793 fprintf(stderr, "Horizontal crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");
2794 av_exit(1);
2795 }
2796 frame_width -= frame_leftBand;
2797 }
2798
2799 static void opt_frame_crop_right(const char *arg)
2800 {
2801 frame_rightBand = atoi(arg);
2802 if (frame_rightBand < 0) {
2803 fprintf(stderr, "Incorrect right crop size\n");
2804 av_exit(1);
2805 }
2806 if ((frame_rightBand) >= frame_width){
2807 fprintf(stderr, "Horizontal crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");
2808 av_exit(1);
2809 }
2810 frame_width -= frame_rightBand;
2811 }
2812
2813 static void opt_frame_size(const char *arg)
2814 {
2815 if (av_parse_video_frame_size(&frame_width, &frame_height, arg) < 0) {
2816 fprintf(stderr, "Incorrect frame size\n");
2817 av_exit(1);
2818 }
2819 }
2820
2821 static void opt_pad(const char *arg) {
2822 fprintf(stderr, "Please use vf=pad\n");
2823 av_exit(1);
2824 }
2825
2826 static void opt_frame_pix_fmt(const char *arg)
2827 {
2828 if (strcmp(arg, "list")) {
2829 frame_pix_fmt = av_get_pix_fmt(arg);
2830 if (frame_pix_fmt == PIX_FMT_NONE) {
2831 fprintf(stderr, "Unknown pixel format requested: %s\n", arg);
2832 av_exit(1);
2833 }
2834 } else {
2835 show_pix_fmts();
2836 av_exit(0);
2837 }
2838 }
2839
2840 static void opt_frame_aspect_ratio(const char *arg)
2841 {
2842 int x = 0, y = 0;
2843 double ar = 0;
2844 const char *p;
2845 char *end;
2846
2847 p = strchr(arg, ':');
2848 if (p) {
2849 x = strtol(arg, &end, 10);
2850 if (end == p)
2851 y = strtol(end+1, &end, 10);
2852 if (x > 0 && y > 0)
2853 ar = (double)x / (double)y;
2854 } else
2855 ar = strtod(arg, NULL);
2856
2857 if (!ar) {
2858 fprintf(stderr, "Incorrect aspect ratio specification.\n");
2859 av_exit(1);
2860 }
2861 frame_aspect_ratio = ar;
2862 }
2863
2864 static int opt_metadata(const char *opt, const char *arg)
2865 {
2866 char *mid= strchr(arg, '=');
2867
2868 if(!mid){
2869 fprintf(stderr, "Missing =\n");
2870 av_exit(1);
2871 }
2872 *mid++= 0;
2873
2874 metadata_count++;
2875 metadata= av_realloc(metadata, sizeof(*metadata)*metadata_count);
2876 metadata[metadata_count-1].key = av_strdup(arg);
2877 metadata[metadata_count-1].value= av_strdup(mid);
2878
2879 return 0;
2880 }
2881
2882 static void opt_qscale(const char *arg)
2883 {
2884 video_qscale = atof(arg);
2885 if (video_qscale <= 0 ||
2886 video_qscale > 255) {
2887 fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2888 av_exit(1);
2889 }
2890 }
2891
2892 static void opt_top_field_first(const char *arg)
2893 {
2894 top_field_first= atoi(arg);
2895 }
2896
2897 static int opt_thread_count(const char *opt, const char *arg)
2898 {
2899 thread_count= parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2900 #if !HAVE_THREADS
2901 if (verbose >= 0)
2902 fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2903 #endif
2904 return 0;
2905 }
2906
2907 static void opt_audio_sample_fmt(const char *arg)
2908 {
2909 if (strcmp(arg, "list"))
2910 audio_sample_fmt = avcodec_get_sample_fmt(arg);
2911 else {
2912 list_fmts(avcodec_sample_fmt_string, SAMPLE_FMT_NB);
2913 av_exit(0);
2914 }
2915 }
2916
2917 static int opt_audio_rate(const char *opt, const char *arg)
2918 {
2919 audio_sample_rate = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2920 return 0;
2921 }
2922
2923 static int opt_audio_channels(const char *opt, const char *arg)
2924 {
2925 audio_channels = parse_number_or_die(opt, arg, OPT_INT64, 0, INT_MAX);
2926 return 0;
2927 }
2928
2929 static void opt_video_channel(const char *arg)
2930 {
2931 video_channel = strtol(arg, NULL, 0);
2932 }
2933
2934 static void opt_video_standard(const char *arg)
2935 {
2936 video_standard = av_strdup(arg);
2937 }
2938
2939 static void opt_codec(int *pstream_copy, char **pcodec_name,
2940 int codec_type, const char *arg)
2941 {
2942 av_freep(pcodec_name);
2943 if (!strcmp(arg, "copy")) {
2944 *pstream_copy = 1;
2945 } else {
2946 *pcodec_name = av_strdup(arg);
2947 }
2948 }
2949
2950 static void opt_audio_codec(const char *arg)
2951 {
2952 opt_codec(&audio_stream_copy, &audio_codec_name, AVMEDIA_TYPE_AUDIO, arg);
2953 }
2954
2955 static void opt_audio_tag(const char *arg)
2956 {
2957 char *tail;
2958 audio_codec_tag= strtol(arg, &tail, 0);
2959
2960 if(!tail || *tail)
2961 audio_codec_tag= arg[0] + (arg[1]<<8) + (arg[2]<<16) + (arg[3]<<24);
2962 }
2963
2964 static void opt_video_tag(const char *arg)
2965 {
2966 char *tail;
2967 video_codec_tag= strtol(arg, &tail, 0);
2968
2969 if(!tail || *tail)
2970 video_codec_tag= arg[0] + (arg[1]<<8) + (arg[2]<<16) + (arg[3]<<24);
2971 }
2972
2973 static void opt_video_codec(const char *arg)
2974 {
2975 opt_codec(&video_stream_copy, &video_codec_name, AVMEDIA_TYPE_VIDEO, arg);
2976 }
2977
2978 static void opt_subtitle_codec(const char *arg)
2979 {
2980 opt_codec(&subtitle_stream_copy, &subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, arg);
2981 }
2982
2983 static void opt_subtitle_tag(const char *arg)
2984 {
2985 char *tail;
2986 subtitle_codec_tag= strtol(arg, &tail, 0);
2987
2988 if(!tail || *tail)
2989 subtitle_codec_tag= arg[0] + (arg[1]<<8) + (arg[2]<<16) + (arg[3]<<24);
2990 }
2991
2992 static void opt_map(const char *arg)
2993 {
2994 AVStreamMap *m;
2995 char *p;
2996
2997 m = &stream_maps[nb_stream_maps++];
2998
2999 m->file_index = strtol(arg, &p, 0);
3000 if (*p)
3001 p++;
3002
3003 m->stream_index = strtol(p, &p, 0);
3004 if (*p) {
3005 p++;
3006 m->sync_file_index = strtol(p, &p, 0);
3007 if (*p)
3008 p++;
3009 m->sync_stream_index = strtol(p, &p, 0);
3010 } else {
3011 m->sync_file_index = m->file_index;
3012 m->sync_stream_index = m->stream_index;
3013 }
3014 }
3015
3016 static void opt_map_meta_data(const char *arg)
3017 {
3018 AVMetaDataMap *m;
3019 char *p;
3020
3021 m = &meta_data_maps[nb_meta_data_maps++];
3022
3023 m->out_file = strtol(arg, &p, 0);
3024 if (*p)
3025 p++;
3026
3027 m->in_file = strtol(p, &p, 0);
3028 }
3029
3030 static void opt_input_ts_scale(const char *arg)
3031 {
3032 unsigned int stream;
3033 double scale;
3034 char *p;
3035
3036 stream = strtol(arg, &p, 0);
3037 if (*p)
3038 p++;
3039 scale= strtod(p, &p);
3040
3041 if(stream >= MAX_STREAMS)
3042 av_exit(1);
3043
3044 input_files_ts_scale[nb_input_files][stream]= scale;
3045 }
3046
3047 static int opt_recording_time(const char *opt, const char *arg)
3048 {
3049 recording_time = parse_time_or_die(opt, arg, 1);
3050 return 0;
3051 }
3052
3053 static int opt_start_time(const char *opt, const char *arg)
3054 {
3055 start_time = parse_time_or_die(opt, arg, 1);
3056 return 0;
3057 }
3058
3059 static int opt_rec_timestamp(const char *opt, const char *arg)
3060 {
3061 rec_timestamp = parse_time_or_die(opt, arg, 0) / 1000000;
3062 return 0;
3063 }
3064
3065 static int opt_input_ts_offset(const char *opt, const char *arg)
3066 {
3067 input_ts_offset = parse_time_or_die(opt, arg, 1);
3068 return 0;
3069 }
3070
3071 static enum CodecID find_codec_or_die(const char *name, int type, int encoder)
3072 {
3073 const char *codec_string = encoder ? "encoder" : "decoder";
3074 AVCodec *codec;
3075
3076 if(!name)
3077 return CODEC_ID_NONE;
3078 codec = encoder ?
3079 avcodec_find_encoder_by_name(name) :
3080 avcodec_find_decoder_by_name(name);
3081 if(!codec) {
3082 fprintf(stderr, "Unknown %s '%s'\n", codec_string, name);
3083 av_exit(1);
3084 }
3085 if(codec->type != type) {
3086 fprintf(stderr, "Invalid %s type '%s'\n", codec_string, name);
3087 av_exit(1);
3088 }
3089 return codec->id;
3090 }
3091
3092 static void opt_input_file(const char *filename)
3093 {
3094 AVFormatContext *ic;
3095 AVFormatParameters params, *ap = &params;
3096 AVInputFormat *file_iformat = NULL;
3097 int err, i, ret, rfps, rfps_base;
3098 int64_t timestamp;
3099
3100 if (last_asked_format) {
3101 if (!(file_iformat = av_find_input_format(last_asked_format))) {
3102 fprintf(stderr, "Unknown input format: '%s'\n", last_asked_format);
3103 av_exit(1);
3104 }
3105 last_asked_format = NULL;
3106 }
3107
3108 if (!strcmp(filename, "-"))
3109 filename = "pipe:";
3110
3111 using_stdin |= !strncmp(filename, "pipe:", 5) ||
3112 !strcmp(filename, "/dev/stdin");
3113
3114 /* get default parameters from command line */
3115 ic = avformat_alloc_context();
3116 if (!ic) {
3117 print_error(filename, AVERROR(ENOMEM));
3118 av_exit(1);
3119 }
3120
3121 memset(ap, 0, sizeof(*ap));
3122 ap->prealloced_context = 1;
3123 ap->sample_rate = audio_sample_rate;
3124 ap->channels = audio_channels;
3125 ap->time_base.den = frame_rate.num;
3126 ap->time_base.num = frame_rate.den;
3127 ap->width = frame_width;
3128 ap->height = frame_height;
3129 ap->pix_fmt = frame_pix_fmt;
3130 // ap->sample_fmt = audio_sample_fmt; //FIXME:not implemented in libavformat
3131 ap->channel = video_channel;
3132 ap->standard = video_standard;
3133
3134 set_context_opts(ic, avformat_opts, AV_OPT_FLAG_DECODING_PARAM);
3135
3136 ic->video_codec_id = find_codec_or_die(video_codec_name , AVMEDIA_TYPE_VIDEO , 0);
3137 ic->audio_codec_id = find_codec_or_die(audio_codec_name , AVMEDIA_TYPE_AUDIO , 0);
3138 ic->subtitle_codec_id= find_codec_or_die(subtitle_codec_name, AVMEDIA_TYPE_SUBTITLE, 0);
3139 ic->flags |= AVFMT_FLAG_NONBLOCK;
3140
3141 if(pgmyuv_compatibility_hack)
3142 ic->video_codec_id= CODEC_ID_PGMYUV;
3143
3144 /* open the input file with generic libav function */
3145 err = av_open_input_file(&ic, filename, file_iformat, 0, ap);
3146 if (err < 0) {
3147 print_error(filename, err);
3148 av_exit(1);
3149 }
3150 if(opt_programid) {
3151 int i, j;
3152 int found=0;
3153 for(i=0; i<ic->nb_streams; i++){
3154 ic->streams[i]->discard= AVDISCARD_ALL;
3155 }
3156 for(i=0; i<ic->nb_programs; i++){
3157 AVProgram *p= ic->programs[i];
3158 if(p->id != opt_programid){
3159 p->discard = AVDISCARD_ALL;
3160 }else{
3161 found=1;
3162 for(j=0; j<p->nb_stream_indexes; j++){
3163 ic->streams[p->stream_index[j]]->discard= AVDISCARD_DEFAULT;
3164 }
3165 }
3166 }
3167 if(!found){
3168 fprintf(stderr, "Specified program id not found\n");
3169 av_exit(1);
3170 }
3171 opt_programid=0;
3172 }
3173
3174 ic->loop_input = loop_input;
3175
3176 /* If not enough info to get the stream parameters, we decode the
3177 first frames to get it. (used in mpeg case for example) */
3178 ret = av_find_stream_info(ic);
3179 if (ret < 0 && verbose >= 0) {
3180 fprintf(stderr, "%s: could not find codec parameters\n", filename);
3181 av_exit(1);
3182 }
3183
3184 timestamp = start_time;
3185 /* add the stream start time */
3186 if (ic->start_time != AV_NOPTS_VALUE)
3187 timestamp += ic->start_time;
3188
3189 /* if seeking requested, we execute it */
3190 if (start_time != 0) {
3191 ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
3192 if (ret < 0) {
3193 fprintf(stderr, "%s: could not seek to position %0.3f\n",
3194 filename, (double)timestamp / AV_TIME_BASE);
3195 }
3196 /* reset seek info */
3197 start_time = 0;