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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 #include "config.h"
23 #include <ctype.h>
24 #include <string.h>
25 #include <math.h>
26 #include <stdlib.h>
27 #include <errno.h>
28 #include <signal.h>
29 #include <limits.h>
30 #include "avformat.h"
31 #include "swscale.h"
32 #include "framehook.h"
33 #include "opt.h"
34 #include "fifo.h"
35 #include "avstring.h"
36
37 #if !defined(HAVE_GETRUSAGE) && defined(HAVE_GETPROCESSTIMES)
38 #include <windows.h>
39 #endif
40
41 #if defined(HAVE_TERMIOS_H)
42 #include <unistd.h>
43 #include <fcntl.h>
44 #include <sys/ioctl.h>
45 #include <sys/time.h>
46 #include <termios.h>
47 #include <sys/resource.h>
48 #elif defined(HAVE_CONIO_H)
49 #include <conio.h>
50 #endif
51 #undef time //needed because HAVE_AV_CONFIG_H is defined on top
52 #include <time.h>
53
54 #include "version.h"
55 #include "cmdutils.h"
56
57 #undef NDEBUG
58 #include <assert.h>
59
60 #if !defined(INFINITY) && defined(HUGE_VAL)
61 #define INFINITY HUGE_VAL
62 #endif
63
64 #undef exit
65
66 static const char program_name[] = "FFmpeg";
67 static const int program_birth_year = 2000;
68
69 /* select an input stream for an output stream */
70 typedef struct AVStreamMap {
71 int file_index;
72 int stream_index;
73 int sync_file_index;
74 int sync_stream_index;
75 } AVStreamMap;
76
77 /** select an input file for an output file */
78 typedef struct AVMetaDataMap {
79 int out_file;
80 int in_file;
81 } AVMetaDataMap;
82
83 extern const OptionDef options[];
84
85 static void show_help(void);
86 static void opt_show_license(void);
87 static int opt_default(const char *opt, const char *arg);
88
89 #define MAX_FILES 20
90
91 static AVFormatContext *input_files[MAX_FILES];
92 static int64_t input_files_ts_offset[MAX_FILES];
93 static int nb_input_files = 0;
94
95 static AVFormatContext *output_files[MAX_FILES];
96 static int nb_output_files = 0;
97
98 static AVStreamMap stream_maps[MAX_FILES];
99 static int nb_stream_maps;
100
101 static AVMetaDataMap meta_data_maps[MAX_FILES];
102 static int nb_meta_data_maps;
103
104 static AVInputFormat *file_iformat;
105 static AVOutputFormat *file_oformat;
106 static int frame_width = 0;
107 static int frame_height = 0;
108 static float frame_aspect_ratio = 0;
109 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
110 static int frame_padtop = 0;
111 static int frame_padbottom = 0;
112 static int frame_padleft = 0;
113 static int frame_padright = 0;
114 static int padcolor[3] = {16,128,128}; /* default to black */
115 static int frame_topBand = 0;
116 static int frame_bottomBand = 0;
117 static int frame_leftBand = 0;
118 static int frame_rightBand = 0;
119 static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
120 static AVRational frame_rate = (AVRational) {25,1};
121 static float video_qscale = 0;
122 static int video_qdiff = 3;
123 static uint16_t *intra_matrix = NULL;
124 static uint16_t *inter_matrix = NULL;
125 #if 0 //experimental, (can be removed)
126 static float video_rc_qsquish=1.0;
127 static float video_rc_qmod_amp=0;
128 static int video_rc_qmod_freq=0;
129 #endif
130 static char *video_rc_override_string=NULL;
131 static char *video_rc_eq="tex^qComp";
132 static int video_disable = 0;
133 static int video_discard = 0;
134 static char *video_codec_name = NULL;
135 static int video_codec_tag = 0;
136 static int same_quality = 0;
137 static int do_deinterlace = 0;
138 static int strict = 0;
139 static int top_field_first = -1;
140 static int me_threshold = 0;
141 static int intra_dc_precision = 8;
142 static int loop_input = 0;
143 static int loop_output = AVFMT_NOOUTPUTLOOP;
144 static int qp_hist = 0;
145
146 static int intra_only = 0;
147 static int audio_sample_rate = 44100;
148 #define QSCALE_NONE -99999
149 static float audio_qscale = QSCALE_NONE;
150 static int audio_disable = 0;
151 static int audio_channels = 1;
152 static char *audio_codec_name = NULL;
153 static int audio_codec_tag = 0;
154 static char *audio_language = NULL;
155
156 static int subtitle_disable = 0;
157 static char *subtitle_codec_name = NULL;
158 static char *subtitle_language = NULL;
159
160 static float mux_preload= 0.5;
161 static float mux_max_delay= 0.7;
162
163 static int64_t recording_time = 0;
164 static int64_t start_time = 0;
165 static int64_t rec_timestamp = 0;
166 static int64_t input_ts_offset = 0;
167 static int file_overwrite = 0;
168 static char *str_title = NULL;
169 static char *str_author = NULL;
170 static char *str_copyright = NULL;
171 static char *str_comment = NULL;
172 static char *str_album = NULL;
173 static int do_benchmark = 0;
174 static int do_hex_dump = 0;
175 static int do_pkt_dump = 0;
176 static int do_psnr = 0;
177 static int do_pass = 0;
178 static char *pass_logfilename = NULL;
179 static int audio_stream_copy = 0;
180 static int video_stream_copy = 0;
181 static int subtitle_stream_copy = 0;
182 static int video_sync_method= 1;
183 static int audio_sync_method= 0;
184 static float audio_drift_threshold= 0.1;
185 static int copy_ts= 0;
186 static int opt_shortest = 0; //
187 static int video_global_header = 0;
188 static char *vstats_filename;
189 static FILE *vstats_file;
190 static int opt_programid = 0;
191
192 static int rate_emu = 0;
193
194 static int video_channel = 0;
195 static char *video_standard;
196
197 static int audio_volume = 256;
198
199 static int using_stdin = 0;
200 static int using_vhook = 0;
201 static int verbose = 1;
202 static int thread_count= 1;
203 static int q_pressed = 0;
204 static int64_t video_size = 0;
205 static int64_t audio_size = 0;
206 static int64_t extra_size = 0;
207 static int nb_frames_dup = 0;
208 static int nb_frames_drop = 0;
209 static int input_sync;
210 static uint64_t limit_filesize = 0; //
211
212 static int pgmyuv_compatibility_hack=0;
213 static float dts_delta_threshold = 10;
214
215 static int sws_flags = SWS_BICUBIC;
216
217 static const char **opt_names;
218 static int opt_name_count;
219 static AVCodecContext *avctx_opts[CODEC_TYPE_NB];
220 static AVFormatContext *avformat_opts;
221 static struct SwsContext *sws_opts;
222 static int64_t timer_start;
223
224 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
225 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
226 static AVBitStreamFilterContext *bitstream_filters[MAX_FILES][MAX_STREAMS];
227
228 #define DEFAULT_PASS_LOGFILENAME "ffmpeg2pass"
229
230 struct AVInputStream;
231
232 typedef struct AVOutputStream {
233 int file_index; /* file index */
234 int index; /* stream index in the output file */
235 int source_index; /* AVInputStream index */
236 AVStream *st; /* stream in the output file */
237 int encoding_needed; /* true if encoding needed for this stream */
238 int frame_number;
239 /* input pts and corresponding output pts
240 for A/V sync */
241 //double sync_ipts; /* dts from the AVPacket of the demuxer in second units */
242 struct AVInputStream *sync_ist; /* input stream to sync against */
243 int64_t sync_opts; /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
244 /* video only */
245 int video_resample;
246 AVFrame pict_tmp; /* temporary image for resampling */
247 struct SwsContext *img_resample_ctx; /* for image resampling */
248 int resample_height;
249
250 int video_crop;
251 int topBand; /* cropping area sizes */
252 int leftBand;
253
254 int video_pad;
255 int padtop; /* padding area sizes */
256 int padbottom;
257 int padleft;
258 int padright;
259
260 /* audio only */
261 int audio_resample;
262 ReSampleContext *resample; /* for audio resampling */
263 AVFifoBuffer fifo; /* for compression: one audio fifo per codec */
264 FILE *logfile;
265 } AVOutputStream;
266
267 typedef struct AVInputStream {
268 int file_index;
269 int index;
270 AVStream *st;
271 int discard; /* true if stream data should be discarded */
272 int decoding_needed; /* true if the packets must be decoded in 'raw_fifo' */
273 int64_t sample_index; /* current sample */
274
275 int64_t start; /* time when read started */
276 unsigned long frame; /* current frame */
277 int64_t next_pts; /* synthetic pts for cases where pkt.pts
278 is not defined */
279 int64_t pts; /* current pts */
280 int is_start; /* is 1 at the start and after a discontinuity */
281 } AVInputStream;
282
283 typedef struct AVInputFile {
284 int eof_reached; /* true if eof reached */
285 int ist_index; /* index of first stream in ist_table */
286 int buffer_size; /* current total buffer size */
287 int nb_streams; /* nb streams we are aware of */
288 } AVInputFile;
289
290 #ifdef HAVE_TERMIOS_H
291
292 /* init terminal so that we can grab keys */
293 static struct termios oldtty;
294 #endif
295
296 static void term_exit(void)
297 {
298 #ifdef HAVE_TERMIOS_H
299 tcsetattr (0, TCSANOW, &oldtty);
300 #endif
301 }
302
303 static volatile sig_atomic_t received_sigterm = 0;
304
305 static void
306 sigterm_handler(int sig)
307 {
308 received_sigterm = sig;
309 term_exit();
310 }
311
312 static void term_init(void)
313 {
314 #ifdef HAVE_TERMIOS_H
315 struct termios tty;
316
317 tcgetattr (0, &tty);
318 oldtty = tty;
319
320 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
321 |INLCR|IGNCR|ICRNL|IXON);
322 tty.c_oflag |= OPOST;
323 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
324 tty.c_cflag &= ~(CSIZE|PARENB);
325 tty.c_cflag |= CS8;
326 tty.c_cc[VMIN] = 1;
327 tty.c_cc[VTIME] = 0;
328
329 tcsetattr (0, TCSANOW, &tty);
330 signal(SIGQUIT, sigterm_handler); /* Quit (POSIX). */
331 #endif
332
333 signal(SIGINT , sigterm_handler); /* Interrupt (ANSI). */
334 signal(SIGTERM, sigterm_handler); /* Termination (ANSI). */
335 /*
336 register a function to be called at normal program termination
337 */
338 atexit(term_exit);
339 #ifdef CONFIG_BEOS_NETSERVER
340 fcntl(0, F_SETFL, fcntl(0, F_GETFL) | O_NONBLOCK);
341 #endif
342 }
343
344 /* read a key without blocking */
345 static int read_key(void)
346 {
347 #if defined(HAVE_TERMIOS_H)
348 int n = 1;
349 unsigned char ch;
350 #ifndef CONFIG_BEOS_NETSERVER
351 struct timeval tv;
352 fd_set rfds;
353
354 FD_ZERO(&rfds);
355 FD_SET(0, &rfds);
356 tv.tv_sec = 0;
357 tv.tv_usec = 0;
358 n = select(1, &rfds, NULL, NULL, &tv);
359 #endif
360 if (n > 0) {
361 n = read(0, &ch, 1);
362 if (n == 1)
363 return ch;
364
365 return n;
366 }
367 #elif defined(HAVE_CONIO_H)
368 if(kbhit())
369 return(getch());
370 #endif
371 return -1;
372 }
373
374 static int decode_interrupt_cb(void)
375 {
376 return q_pressed || (q_pressed = read_key() == 'q');
377 }
378
379 static int read_ffserver_streams(AVFormatContext *s, const char *filename)
380 {
381 int i, err;
382 AVFormatContext *ic;
383
384 err = av_open_input_file(&ic, filename, NULL, FFM_PACKET_SIZE, NULL);
385 if (err < 0)
386 return err;
387 /* copy stream format */
388 s->nb_streams = ic->nb_streams;
389 for(i=0;i<ic->nb_streams;i++) {
390 AVStream *st;
391
392 // FIXME: a more elegant solution is needed
393 st = av_mallocz(sizeof(AVStream));
394 memcpy(st, ic->streams[i], sizeof(AVStream));
395 st->codec = avcodec_alloc_context();
396 memcpy(st->codec, ic->streams[i]->codec, sizeof(AVCodecContext));
397 s->streams[i] = st;
398 }
399
400 av_close_input_file(ic);
401 return 0;
402 }
403
404 static double
405 get_sync_ipts(const AVOutputStream *ost)
406 {
407 const AVInputStream *ist = ost->sync_ist;
408 return (double)(ist->pts - start_time)/AV_TIME_BASE;
409 }
410
411 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
412 int ret;
413
414 while(bsfc){
415 AVPacket new_pkt= *pkt;
416 int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
417 &new_pkt.data, &new_pkt.size,
418 pkt->data, pkt->size,
419 pkt->flags & PKT_FLAG_KEY);
420 if(a){
421 av_free_packet(pkt);
422 new_pkt.destruct= av_destruct_packet;
423 }
424 *pkt= new_pkt;
425
426 bsfc= bsfc->next;
427 }
428
429 ret= av_interleaved_write_frame(s, pkt);
430 if(ret < 0){
431 print_error("av_interleaved_write_frame()", ret);
432 exit(1);
433 }
434 }
435
436 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
437
438 static void do_audio_out(AVFormatContext *s,
439 AVOutputStream *ost,
440 AVInputStream *ist,
441 unsigned char *buf, int size)
442 {
443 uint8_t *buftmp;
444 static uint8_t *audio_buf = NULL;
445 static uint8_t *audio_out = NULL;
446 const int audio_out_size= 4*MAX_AUDIO_PACKET_SIZE;
447
448 int size_out, frame_bytes, ret;
449 AVCodecContext *enc= ost->st->codec;
450
451 /* SC: dynamic allocation of buffers */
452 if (!audio_buf)
453 audio_buf = av_malloc(2*MAX_AUDIO_PACKET_SIZE);
454 if (!audio_out)
455 audio_out = av_malloc(audio_out_size);
456 if (!audio_buf || !audio_out)
457 return; /* Should signal an error ! */
458
459 if(audio_sync_method){
460 double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
461 - av_fifo_size(&ost->fifo)/(ost->st->codec->channels * 2);
462 double idelta= delta*ist->st->codec->sample_rate / enc->sample_rate;
463 int byte_delta= ((int)idelta)*2*ist->st->codec->channels;
464
465 //FIXME resample delay
466 if(fabs(delta) > 50){
467 if(ist->is_start || fabs(delta) > audio_drift_threshold*enc->sample_rate){
468 if(byte_delta < 0){
469 byte_delta= FFMAX(byte_delta, -size);
470 size += byte_delta;
471 buf -= byte_delta;
472 if(verbose > 2)
473 fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
474 if(!size)
475 return;
476 ist->is_start=0;
477 }else{
478 static uint8_t *input_tmp= NULL;
479 input_tmp= av_realloc(input_tmp, byte_delta + size);
480
481 if(byte_delta + size <= MAX_AUDIO_PACKET_SIZE)
482 ist->is_start=0;
483 else
484 byte_delta= MAX_AUDIO_PACKET_SIZE - size;
485
486 memset(input_tmp, 0, byte_delta);
487 memcpy(input_tmp + byte_delta, buf, size);
488 buf= input_tmp;
489 size += byte_delta;
490 if(verbose > 2)
491 fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
492 }
493 }else if(audio_sync_method>1){
494 int comp= av_clip(delta, -audio_sync_method, audio_sync_method);
495 assert(ost->audio_resample);
496 if(verbose > 2)
497 fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
498 // 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));
499 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
500 }
501 }
502 }else
503 ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
504 - av_fifo_size(&ost->fifo)/(ost->st->codec->channels * 2); //FIXME wrong
505
506 if (ost->audio_resample) {
507 buftmp = audio_buf;
508 size_out = audio_resample(ost->resample,
509 (short *)buftmp, (short *)buf,
510 size / (ist->st->codec->channels * 2));
511 size_out = size_out * enc->channels * 2;
512 } else {
513 buftmp = buf;
514 size_out = size;
515 }
516
517 /* now encode as many frames as possible */
518 if (enc->frame_size > 1) {
519 /* output resampled raw samples */
520 av_fifo_write(&ost->fifo, buftmp, size_out);
521
522 frame_bytes = enc->frame_size * 2 * enc->channels;
523
524 while (av_fifo_read(&ost->fifo, audio_buf, frame_bytes) == 0) {
525 AVPacket pkt;
526 av_init_packet(&pkt);
527
528 ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
529 (short *)audio_buf);
530 audio_size += ret;
531 pkt.stream_index= ost->index;
532 pkt.data= audio_out;
533 pkt.size= ret;
534 if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
535 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
536 pkt.flags |= PKT_FLAG_KEY;
537 write_frame(s, &pkt, ost->st->codec, bitstream_filters[ost->file_index][pkt.stream_index]);
538
539 ost->sync_opts += enc->frame_size;
540 }
541 } else {
542 AVPacket pkt;
543 av_init_packet(&pkt);
544
545 ost->sync_opts += size_out / (2 * enc->channels);
546
547 /* output a pcm frame */
548 /* XXX: change encoding codec API to avoid this ? */
549 switch(enc->codec->id) {
550 case CODEC_ID_PCM_S32LE:
551 case CODEC_ID_PCM_S32BE:
552 case CODEC_ID_PCM_U32LE:
553 case CODEC_ID_PCM_U32BE:
554 size_out = size_out << 1;
555 break;
556 case CODEC_ID_PCM_S24LE:
557 case CODEC_ID_PCM_S24BE:
558 case CODEC_ID_PCM_U24LE:
559 case CODEC_ID_PCM_U24BE:
560 case CODEC_ID_PCM_S24DAUD:
561 size_out = size_out / 2 * 3;
562 break;
563 case CODEC_ID_PCM_S16LE:
564 case CODEC_ID_PCM_S16BE:
565 case CODEC_ID_PCM_U16LE:
566 case CODEC_ID_PCM_U16BE:
567 break;
568 default:
569 size_out = size_out >> 1;
570 break;
571 }
572 ret = avcodec_encode_audio(enc, audio_out, size_out,
573 (short *)buftmp);
574 audio_size += ret;
575 pkt.stream_index= ost->index;
576 pkt.data= audio_out;
577 pkt.size= ret;
578 if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
579 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
580 pkt.flags |= PKT_FLAG_KEY;
581 write_frame(s, &pkt, ost->st->codec, bitstream_filters[ost->file_index][pkt.stream_index]);
582 }
583 }
584
585 static void pre_process_video_frame(AVInputStream *ist, AVPicture *picture, void **bufp)
586 {
587 AVCodecContext *dec;
588 AVPicture *picture2;
589 AVPicture picture_tmp;
590 uint8_t *buf = 0;
591
592 dec = ist->st->codec;
593
594 /* deinterlace : must be done before any resize */
595 if (do_deinterlace || using_vhook) {
596 int size;
597
598 /* create temporary picture */
599 size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
600 buf = av_malloc(size);
601 if (!buf)
602 return;
603
604 picture2 = &picture_tmp;
605 avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
606
607 if (do_deinterlace){
608 if(avpicture_deinterlace(picture2, picture,
609 dec->pix_fmt, dec->width, dec->height) < 0) {
610 /* if error, do not deinterlace */
611 av_free(buf);
612 buf = NULL;
613 picture2 = picture;
614 }
615 } else {
616 av_picture_copy(picture2, picture, dec->pix_fmt, dec->width, dec->height);
617 }
618 } else {
619 picture2 = picture;
620 }
621
622 if (ENABLE_VHOOK)
623 frame_hook_process(picture2, dec->pix_fmt, dec->width, dec->height,
624 1000000 * ist->pts / AV_TIME_BASE);
625
626 if (picture != picture2)
627 *picture = *picture2;
628 *bufp = buf;
629 }
630
631 /* we begin to correct av delay at this threshold */
632 #define AV_DELAY_MAX 0.100
633
634 static void do_subtitle_out(AVFormatContext *s,
635 AVOutputStream *ost,
636 AVInputStream *ist,
637 AVSubtitle *sub,
638 int64_t pts)
639 {
640 static uint8_t *subtitle_out = NULL;
641 int subtitle_out_max_size = 65536;
642 int subtitle_out_size, nb, i;
643 AVCodecContext *enc;
644 AVPacket pkt;
645
646 if (pts == AV_NOPTS_VALUE) {
647 fprintf(stderr, "Subtitle packets must have a pts\n");
648 return;
649 }
650
651 enc = ost->st->codec;
652
653 if (!subtitle_out) {
654 subtitle_out = av_malloc(subtitle_out_max_size);
655 }
656
657 /* Note: DVB subtitle need one packet to draw them and one other
658 packet to clear them */
659 /* XXX: signal it in the codec context ? */
660 if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
661 nb = 2;
662 else
663 nb = 1;
664
665 for(i = 0; i < nb; i++) {
666 subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
667 subtitle_out_max_size, sub);
668
669 av_init_packet(&pkt);
670 pkt.stream_index = ost->index;
671 pkt.data = subtitle_out;
672 pkt.size = subtitle_out_size;
673 pkt.pts = av_rescale_q(pts, ist->st->time_base, ost->st->time_base);
674 if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
675 /* XXX: the pts correction is handled here. Maybe handling
676 it in the codec would be better */
677 if (i == 0)
678 pkt.pts += 90 * sub->start_display_time;
679 else
680 pkt.pts += 90 * sub->end_display_time;
681 }
682 write_frame(s, &pkt, ost->st->codec, bitstream_filters[ost->file_index][pkt.stream_index]);
683 }
684 }
685
686 static int bit_buffer_size= 1024*256;
687 static uint8_t *bit_buffer= NULL;
688
689 static void do_video_out(AVFormatContext *s,
690 AVOutputStream *ost,
691 AVInputStream *ist,
692 AVFrame *in_picture,
693 int *frame_size)
694 {
695 int nb_frames, i, ret;
696 AVFrame *final_picture, *formatted_picture, *resampling_dst, *padding_src;
697 AVFrame picture_crop_temp, picture_pad_temp;
698 AVCodecContext *enc, *dec;
699
700 avcodec_get_frame_defaults(&picture_crop_temp);
701 avcodec_get_frame_defaults(&picture_pad_temp);
702
703 enc = ost->st->codec;
704 dec = ist->st->codec;
705
706 /* by default, we output a single frame */
707 nb_frames = 1;
708
709 *frame_size = 0;
710
711 if(video_sync_method){
712 double vdelta;
713 vdelta = get_sync_ipts(ost) / av_q2d(enc->time_base) - ost->sync_opts;
714 //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
715 if (vdelta < -1.1)
716 nb_frames = 0;
717 else if (vdelta > 1.1)
718 nb_frames = lrintf(vdelta);
719 //fprintf(stderr, "vdelta:%f, ost->sync_opts:%"PRId64", ost->sync_ipts:%f nb_frames:%d\n", vdelta, ost->sync_opts, ost->sync_ipts, nb_frames);
720 if (nb_frames == 0){
721 ++nb_frames_drop;
722 if (verbose>2)
723 fprintf(stderr, "*** drop!\n");
724 }else if (nb_frames > 1) {
725 nb_frames_dup += nb_frames;
726 if (verbose>2)
727 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
728 }
729 }else
730 ost->sync_opts= lrintf(get_sync_ipts(ost) / av_q2d(enc->time_base));
731
732 nb_frames= FFMIN(nb_frames, max_frames[CODEC_TYPE_VIDEO] - ost->frame_number);
733 if (nb_frames <= 0)
734 return;
735
736 if (ost->video_crop) {
737 if (av_picture_crop((AVPicture *)&picture_crop_temp, (AVPicture *)in_picture, dec->pix_fmt, ost->topBand, ost->leftBand) < 0) {
738 av_log(NULL, AV_LOG_ERROR, "error cropping picture\n");
739 return;
740 }
741 formatted_picture = &picture_crop_temp;
742 } else {
743 formatted_picture = in_picture;
744 }
745
746 final_picture = formatted_picture;
747 padding_src = formatted_picture;
748 resampling_dst = &ost->pict_tmp;
749 if (ost->video_pad) {
750 final_picture = &ost->pict_tmp;
751 if (ost->video_resample) {
752 if (av_picture_crop((AVPicture *)&picture_pad_temp, (AVPicture *)final_picture, enc->pix_fmt, ost->padtop, ost->padleft) < 0) {
753 av_log(NULL, AV_LOG_ERROR, "error padding picture\n");
754 return;
755 }
756 resampling_dst = &picture_pad_temp;
757 }
758 }
759
760 if (ost->video_resample) {
761 padding_src = NULL;
762 final_picture = &ost->pict_tmp;
763 sws_scale(ost->img_resample_ctx, formatted_picture->data, formatted_picture->linesize,
764 0, ost->resample_height, resampling_dst->data, resampling_dst->linesize);
765 }
766
767 if (ost->video_pad) {
768 av_picture_pad((AVPicture*)final_picture, (AVPicture *)padding_src,
769 enc->height, enc->width, enc->pix_fmt,
770 ost->padtop, ost->padbottom, ost->padleft, ost->padright, padcolor);
771 }
772
773 /* duplicates frame if needed */
774 for(i=0;i<nb_frames;i++) {
775 AVPacket pkt;
776 av_init_packet(&pkt);
777 pkt.stream_index= ost->index;
778
779 if (s->oformat->flags & AVFMT_RAWPICTURE) {
780 /* raw pictures are written as AVPicture structure to
781 avoid any copies. We support temorarily the older
782 method. */
783 AVFrame* old_frame = enc->coded_frame;
784 enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
785 pkt.data= (uint8_t *)final_picture;
786 pkt.size= sizeof(AVPicture);
787 if(dec->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
788 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
789 if(dec->coded_frame && dec->coded_frame->key_frame)
790 pkt.flags |= PKT_FLAG_KEY;
791
792 write_frame(s, &pkt, ost->st->codec, bitstream_filters[ost->file_index][pkt.stream_index]);
793 enc->coded_frame = old_frame;
794 } else {
795 AVFrame big_picture;
796
797 big_picture= *final_picture;
798 /* better than nothing: use input picture interlaced
799 settings */
800 big_picture.interlaced_frame = in_picture->interlaced_frame;
801 if(avctx_opts[CODEC_TYPE_VIDEO]->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)){
802 if(top_field_first == -1)
803 big_picture.top_field_first = in_picture->top_field_first;
804 else
805 big_picture.top_field_first = top_field_first;
806 }
807
808 /* handles sameq here. This is not correct because it may
809 not be a global option */
810 if (same_quality) {
811 big_picture.quality = ist->st->quality;
812 }else
813 big_picture.quality = ost->st->quality;
814 if(!me_threshold)
815 big_picture.pict_type = 0;
816 // big_picture.pts = AV_NOPTS_VALUE;
817 big_picture.pts= ost->sync_opts;
818 // big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
819 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
820 ret = avcodec_encode_video(enc,
821 bit_buffer, bit_buffer_size,
822 &big_picture);
823 if (ret == -1) {
824 fprintf(stderr, "Video encoding failed\n");
825 exit(1);
826 }
827 //enc->frame_number = enc->real_pict_num;
828 if(ret>0){
829 pkt.data= bit_buffer;
830 pkt.size= ret;
831 if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
832 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
833 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
834 pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
835 pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
836
837 if(enc->coded_frame && enc->coded_frame->key_frame)
838 pkt.flags |= PKT_FLAG_KEY;
839 write_frame(s, &pkt, ost->st->codec, bitstream_filters[ost->file_index][pkt.stream_index]);
840 *frame_size = ret;
841 //fprintf(stderr,"\nFrame: %3d %3d size: %5d type: %d",
842 // enc->frame_number-1, enc->real_pict_num, ret,
843 // enc->pict_type);
844 /* if two pass, output log */
845 if (ost->logfile && enc->stats_out) {
846 fprintf(ost->logfile, "%s", enc->stats_out);
847 }
848 }
849 }
850 ost->sync_opts++;
851 ost->frame_number++;
852 }
853 }
854
855 static double psnr(double d){
856 if(d==0) return INFINITY;
857 return -10.0*log(d)/log(10.0);
858 }
859
860 static void do_video_stats(AVFormatContext *os, AVOutputStream *ost,
861 int frame_size)
862 {
863 AVCodecContext *enc;
864 int frame_number;
865 double ti1, bitrate, avg_bitrate;
866
867 /* this is executed just the first time do_video_stats is called */
868 if (!vstats_file) {
869 vstats_file = fopen(vstats_filename, "w");
870 if (!vstats_file) {
871 perror("fopen");
872 exit(1);
873 }
874 }
875
876 enc = ost->st->codec;
877 if (enc->codec_type == CODEC_TYPE_VIDEO) {
878 frame_number = ost->frame_number;
879 fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
880 if (enc->flags&CODEC_FLAG_PSNR)
881 fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
882
883 fprintf(vstats_file,"f_size= %6d ", frame_size);
884 /* compute pts value */
885 ti1 = ost->sync_opts * av_q2d(enc->time_base);
886 if (ti1 < 0.01)
887 ti1 = 0.01;
888
889 bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
890 avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
891 fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
892 (double)video_size / 1024, ti1, bitrate, avg_bitrate);
893 fprintf(vstats_file,"type= %c\n", av_get_pict_type_char(enc->coded_frame->pict_type));
894 }
895 }
896
897 static void print_report(AVFormatContext **output_files,
898 AVOutputStream **ost_table, int nb_ostreams,
899 int is_last_report)
900 {
901 char buf[1024];
902 AVOutputStream *ost;
903 AVFormatContext *oc, *os;
904 int64_t total_size;
905 AVCodecContext *enc;
906 int frame_number, vid, i;
907 double bitrate, ti1, pts;
908 static int64_t last_time = -1;
909 static int qp_histogram[52];
910
911 if (!is_last_report) {
912 int64_t cur_time;
913 /* display the report every 0.5 seconds */
914 cur_time = av_gettime();
915 if (last_time == -1) {
916 last_time = cur_time;
917 return;
918 }
919 if ((cur_time - last_time) < 500000)
920 return;
921 last_time = cur_time;
922 }
923
924
925 oc = output_files[0];
926
927 total_size = url_fsize(&oc->pb);
928 if(total_size<0) // FIXME improve url_fsize() so it works with non seekable output too
929 total_size= url_ftell(&oc->pb);
930
931 buf[0] = '\0';
932 ti1 = 1e10;
933 vid = 0;
934 for(i=0;i<nb_ostreams;i++) {
935 ost = ost_table[i];
936 os = output_files[ost->file_index];
937 enc = ost->st->codec;
938 if (vid && enc->codec_type == CODEC_TYPE_VIDEO) {
939 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ",
940 enc->coded_frame->quality/(float)FF_QP2LAMBDA);
941 }
942 if (!vid && enc->codec_type == CODEC_TYPE_VIDEO) {
943 float t = (av_gettime()-timer_start) / 1000000.0;
944
945 frame_number = ost->frame_number;
946 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3d q=%3.1f ",
947 frame_number, (t>1)?(int)(frame_number/t+0.5) : 0,
948 enc->coded_frame ? enc->coded_frame->quality/(float)FF_QP2LAMBDA : -1);
949 if(is_last_report)
950 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
951 if(qp_hist && enc->coded_frame){
952 int j;
953 int qp= lrintf(enc->coded_frame->quality/(float)FF_QP2LAMBDA);
954 if(qp>=0 && qp<sizeof(qp_histogram)/sizeof(int))
955 qp_histogram[qp]++;
956 for(j=0; j<32; j++)
957 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
958 }
959 if (enc->flags&CODEC_FLAG_PSNR){
960 int j;
961 double error, error_sum=0;
962 double scale, scale_sum=0;
963 char type[3]= {'Y','U','V'};
964 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
965 for(j=0; j<3; j++){
966 if(is_last_report){
967 error= enc->error[j];
968 scale= enc->width*enc->height*255.0*255.0*frame_number;
969 }else{
970 error= enc->coded_frame->error[j];
971 scale= enc->width*enc->height*255.0*255.0;
972 }
973 if(j) scale/=4;
974 error_sum += error;
975 scale_sum += scale;
976 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
977 }
978 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
979 }
980 vid = 1;
981 }
982 /* compute min output value */
983 pts = (double)ost->st->pts.val * av_q2d(ost->st->time_base);
984 if ((pts < ti1) && (pts > 0))
985 ti1 = pts;
986 }
987 if (ti1 < 0.01)
988 ti1 = 0.01;
989
990 if (verbose || is_last_report) {
991 bitrate = (double)(total_size * 8) / ti1 / 1000.0;
992
993 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
994 "size=%8.0fkB time=%0.1f bitrate=%6.1fkbits/s",
995 (double)total_size / 1024, ti1, bitrate);
996
997 if (verbose > 1)
998 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
999 nb_frames_dup, nb_frames_drop);
1000
1001 if (verbose >= 0)
1002 fprintf(stderr, "%s \r", buf);
1003
1004 fflush(stderr);
1005 }
1006
1007 if (is_last_report && verbose >= 0){
1008 int64_t raw= audio_size + video_size + extra_size;
1009 fprintf(stderr, "\n");
1010 fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1011 video_size/1024.0,
1012 audio_size/1024.0,
1013 extra_size/1024.0,
1014 100.0*(total_size - raw)/raw
1015 );
1016 }
1017 }
1018
1019 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1020 static int output_packet(AVInputStream *ist, int ist_index,
1021 AVOutputStream **ost_table, int nb_ostreams,
1022 const AVPacket *pkt)
1023 {
1024 AVFormatContext *os;
1025 AVOutputStream *ost;
1026 uint8_t *ptr;
1027 int len, ret, i;
1028 uint8_t *data_buf;
1029 int data_size, got_picture;
1030 AVFrame picture;
1031 void *buffer_to_free;
1032 static unsigned int samples_size= 0;
1033 static short *samples= NULL;
1034 AVSubtitle subtitle, *subtitle_to_free;
1035 int got_subtitle;
1036
1037 if(!pkt){
1038 ist->pts= ist->next_pts; // needed for last packet if vsync=0
1039 } else if (pkt->dts != AV_NOPTS_VALUE) { //FIXME seems redundant, as libavformat does this too
1040 ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1041 } else {
1042 // assert(ist->pts == ist->next_pts);
1043 }
1044
1045 if (pkt == NULL) {
1046 /* EOF handling */
1047 ptr = NULL;
1048 len = 0;
1049 goto handle_eof;
1050 }
1051
1052 len = pkt->size;
1053 ptr = pkt->data;
1054 while (len > 0) {
1055 handle_eof:
1056 /* decode the packet if needed */
1057 data_buf = NULL; /* fail safe */
1058 data_size = 0;
1059 subtitle_to_free = NULL;
1060 if (ist->decoding_needed) {
1061 switch(ist->st->codec->codec_type) {
1062 case CODEC_TYPE_AUDIO:{
1063 if(pkt)
1064 samples= av_fast_realloc(samples, &samples_size, FFMAX(pkt->size*sizeof(*samples), AVCODEC_MAX_AUDIO_FRAME_SIZE));
1065 data_size= samples_size;
1066 /* XXX: could avoid copy if PCM 16 bits with same
1067 endianness as CPU */
1068 ret = avcodec_decode_audio2(ist->st->codec, samples, &data_size,
1069 ptr, len);
1070 if (ret < 0)
1071 goto fail_decode;
1072 ptr += ret;
1073 len -= ret;
1074 /* Some bug in mpeg audio decoder gives */
1075 /* data_size < 0, it seems they are overflows */
1076 if (data_size <= 0) {
1077 /* no audio frame */
1078 continue;
1079 }
1080 data_buf = (uint8_t *)samples;
1081 ist->next_pts += ((int64_t)AV_TIME_BASE/2 * data_size) /
1082 (ist->st->codec->sample_rate * ist->st->codec->channels);
1083 break;}
1084 case CODEC_TYPE_VIDEO:
1085 data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1086 /* XXX: allocate picture correctly */
1087 avcodec_get_frame_defaults(&picture);
1088
1089 ret = avcodec_decode_video(ist->st->codec,
1090 &picture, &got_picture, ptr, len);
1091 ist->st->quality= picture.quality;
1092 if (ret < 0)
1093 goto fail_decode;
1094 if (!got_picture) {
1095 /* no picture yet */
1096 goto discard_packet;
1097 }
1098 if (ist->st->codec->time_base.num != 0) {
1099 ist->next_pts += ((int64_t)AV_TIME_BASE *
1100 ist->st->codec->time_base.num) /
1101 ist->st->codec->time_base.den;
1102 }
1103 len = 0;
1104 break;
1105 case CODEC_TYPE_SUBTITLE:
1106 ret = avcodec_decode_subtitle(ist->st->codec,
1107 &subtitle, &got_subtitle, ptr, len);
1108 if (ret < 0)
1109 goto fail_decode;
1110 if (!got_subtitle) {
1111 goto discard_packet;
1112 }
1113 subtitle_to_free = &subtitle;
1114 len = 0;
1115 break;
1116 default:
1117 goto fail_decode;
1118 }
1119 } else {
1120 switch(ist->st->codec->codec_type) {
1121 case CODEC_TYPE_AUDIO:
1122 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1123 (ist->st->codec->sample_rate * ist->st->codec->channels);
1124 break;
1125 case CODEC_TYPE_VIDEO:
1126 if (ist->st->codec->time_base.num != 0) {
1127 ist->next_pts += ((int64_t)AV_TIME_BASE *
1128 ist->st->codec->time_base.num) /
1129 ist->st->codec->time_base.den;
1130 }
1131 break;
1132 }
1133 data_buf = ptr;
1134 data_size = len;
1135 ret = len;
1136 len = 0;
1137 }
1138
1139 buffer_to_free = NULL;
1140 if (ist->st->codec->codec_type == CODEC_TYPE_VIDEO) {
1141 pre_process_video_frame(ist, (AVPicture *)&picture,
1142 &buffer_to_free);
1143 }
1144
1145 // preprocess audio (volume)
1146 if (ist->st->codec->codec_type == CODEC_TYPE_AUDIO) {
1147 if (audio_volume != 256) {
1148 short *volp;
1149 volp = samples;
1150 for(i=0;i<(data_size / sizeof(short));i++) {
1151 int v = ((*volp) * audio_volume + 128) >> 8;
1152 if (v < -32768) v = -32768;
1153 if (v > 32767) v = 32767;
1154 *volp++ = v;
1155 }
1156 }
1157 }
1158
1159 /* frame rate emulation */
1160 if (ist->st->codec->rate_emu) {
1161 int64_t pts = av_rescale((int64_t) ist->frame * ist->st->codec->time_base.num, 1000000, ist->st->codec->time_base.den);
1162 int64_t now = av_gettime() - ist->start;
1163 if (pts > now)
1164 usleep(pts - now);
1165
1166 ist->frame++;
1167 }
1168
1169 #if 0
1170 /* mpeg PTS deordering : if it is a P or I frame, the PTS
1171 is the one of the next displayed one */
1172 /* XXX: add mpeg4 too ? */
1173 if (ist->st->codec->codec_id == CODEC_ID_MPEG1VIDEO) {
1174 if (ist->st->codec->pict_type != B_TYPE) {
1175 int64_t tmp;
1176 tmp = ist->last_ip_pts;
1177 ist->last_ip_pts = ist->frac_pts.val;
1178 ist->frac_pts.val = tmp;
1179 }
1180 }
1181 #endif
1182 /* if output time reached then transcode raw format,
1183 encode packets and output them */
1184 if (start_time == 0 || ist->pts >= start_time)
1185 for(i=0;i<nb_ostreams;i++) {
1186 int frame_size;
1187
1188 ost = ost_table[i];
1189 if (ost->source_index == ist_index) {
1190 os = output_files[ost->file_index];
1191
1192 #if 0
1193 printf("%d: got pts=%0.3f %0.3f\n", i,
1194 (double)pkt->pts / AV_TIME_BASE,
1195 ((double)ist->pts / AV_TIME_BASE) -
1196 ((double)ost->st->pts.val * ost->st->time_base.num / ost->st->time_base.den));
1197 #endif
1198 /* set the input output pts pairs */
1199 //ost->sync_ipts = (double)(ist->pts + input_files_ts_offset[ist->file_index] - start_time)/ AV_TIME_BASE;
1200
1201 if (ost->encoding_needed) {
1202 switch(ost->st->codec->codec_type) {
1203 case CODEC_TYPE_AUDIO:
1204 do_audio_out(os, ost, ist, data_buf, data_size);
1205 break;
1206 case CODEC_TYPE_VIDEO:
1207 do_video_out(os, ost, ist, &picture, &frame_size);
1208 video_size += frame_size;
1209 if (vstats_filename && frame_size)
1210 do_video_stats(os, ost, frame_size);
1211 break;
1212 case CODEC_TYPE_SUBTITLE:
1213 do_subtitle_out(os, ost, ist, &subtitle,
1214 pkt->pts);
1215 break;
1216 default:
1217 abort();
1218 }
1219 } else {
1220 AVFrame avframe; //FIXME/XXX remove this
1221 AVPacket opkt;
1222 av_init_packet(&opkt);
1223
1224 if (!ost->frame_number && !(pkt->flags & PKT_FLAG_KEY))
1225 continue;
1226
1227 /* no reencoding needed : output the packet directly */
1228 /* force the input stream PTS */
1229
1230 avcodec_get_frame_defaults(&avframe);
1231 ost->st->codec->coded_frame= &avframe;
1232 avframe.key_frame = pkt->flags & PKT_FLAG_KEY;
1233
1234 if(ost->st->codec->codec_type == CODEC_TYPE_AUDIO)
1235 audio_size += data_size;
1236 else if (ost->st->codec->codec_type == CODEC_TYPE_VIDEO) {
1237 video_size += data_size;
1238 ost->sync_opts++;
1239 }
1240
1241 opkt.stream_index= ost->index;
1242 if(pkt->pts != AV_NOPTS_VALUE)
1243 opkt.pts= av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base);
1244 else
1245 opkt.pts= AV_NOPTS_VALUE;
1246
1247 if (pkt->dts == AV_NOPTS_VALUE)
1248 opkt.dts = av_rescale_q(ist->next_pts, AV_TIME_BASE_Q, ost->st->time_base);
1249 else
1250 opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1251
1252 opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1253 opkt.flags= pkt->flags;
1254
1255 //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1256 if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & PKT_FLAG_KEY))
1257 opkt.destruct= av_destruct_packet;
1258
1259 write_frame(os, &opkt, ost->st->codec, bitstream_filters[ost->file_index][pkt->stream_index]);
1260 ost->st->codec->frame_number++;
1261 ost->frame_number++;
1262 av_free_packet(&opkt);
1263 }
1264 }
1265 }
1266 av_free(buffer_to_free);
1267 /* XXX: allocate the subtitles in the codec ? */
1268 if (subtitle_to_free) {
1269 if (subtitle_to_free->rects != NULL) {
1270 for (i = 0; i < subtitle_to_free->num_rects; i++) {
1271 av_free(subtitle_to_free->rects[i].bitmap);
1272 av_free(subtitle_to_free->rects[i].rgba_palette);
1273 }
1274 av_freep(&subtitle_to_free->rects);
1275 }
1276 subtitle_to_free->num_rects = 0;
1277 subtitle_to_free = NULL;
1278 }
1279 }
1280 discard_packet:
1281 if (pkt == NULL) {
1282 /* EOF handling */
1283
1284 for(i=0;i<nb_ostreams;i++) {
1285 ost = ost_table[i];
1286 if (ost->source_index == ist_index) {
1287 AVCodecContext *enc= ost->st->codec;
1288 os = output_files[ost->file_index];
1289
1290 if(ost->st->codec->codec_type == CODEC_TYPE_AUDIO && enc->frame_size <=1)
1291 continue;
1292 if(ost->st->codec->codec_type == CODEC_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1293 continue;
1294
1295 if (ost->encoding_needed) {
1296 for(;;) {
1297 AVPacket pkt;
1298 int fifo_bytes;
1299 av_init_packet(&pkt);
1300 pkt.stream_index= ost->index;
1301
1302 switch(ost->st->codec->codec_type) {
1303 case CODEC_TYPE_AUDIO:
1304 fifo_bytes = av_fifo_size(&ost->fifo);
1305 ret = 0;
1306 /* encode any samples remaining in fifo */
1307 if(fifo_bytes > 0 && enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1308 int fs_tmp = enc->frame_size;
1309 enc->frame_size = fifo_bytes / (2 * enc->channels);
1310 if(av_fifo_read(&ost->fifo, (uint8_t *)samples, fifo_bytes) == 0) {
1311 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, samples);
1312 }
1313 enc->frame_size = fs_tmp;
1314 }
1315 if(ret <= 0) {
1316 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1317 }
1318 audio_size += ret;
1319 pkt.flags |= PKT_FLAG_KEY;
1320 break;
1321 case CODEC_TYPE_VIDEO:
1322 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1323 video_size += ret;
1324 if(enc->coded_frame && enc->coded_frame->key_frame)
1325 pkt.flags |= PKT_FLAG_KEY;
1326 if (ost->logfile && enc->stats_out) {
1327 fprintf(ost->logfile, "%s", enc->stats_out);
1328 }
1329 break;
1330 default:
1331 ret=-1;
1332 }
1333
1334 if(ret<=0)
1335 break;
1336 pkt.data= bit_buffer;
1337 pkt.size= ret;
1338 if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1339 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1340 write_frame(os, &pkt, ost->st->codec, bitstream_filters[ost->file_index][pkt.stream_index]);
1341 }
1342 }
1343 }
1344 }
1345 }
1346
1347 return 0;
1348 fail_decode:
1349 return -1;
1350 }
1351
1352 static void print_sdp(AVFormatContext **avc, int n)
1353 {
1354 char sdp[2048];
1355
1356 avf_sdp_create(avc, n, sdp, sizeof(sdp));
1357 printf("SDP:\n%s\n", sdp);
1358 }
1359
1360 static int stream_index_from_inputs(AVFormatContext **input_files,
1361 int nb_input_files,
1362 AVInputFile *file_table,
1363 AVInputStream **ist_table,
1364 enum CodecType type,
1365 int programid)
1366 {
1367 int p, q, z;
1368 for(z=0; z<nb_input_files; z++) {
1369 AVFormatContext *ic = input_files[z];
1370 for(p=0; p<ic->nb_programs; p++) {
1371 AVProgram *program = ic->programs[p];
1372 if(program->id != programid)
1373 continue;
1374 for(q=0; q<program->nb_stream_indexes; q++) {
1375 int sidx = program->stream_index[q];
1376 int ris = file_table[z].ist_index + sidx;
1377 if(ist_table[ris]->discard && ic->streams[sidx]->codec->codec_type == type)
1378 return ris;
1379 }
1380 }
1381 }
1382
1383 return -1;
1384 }
1385
1386 /*
1387 * The following code is the main loop of the file converter
1388 */
1389 static int av_encode(AVFormatContext **output_files,
1390 int nb_output_files,
1391 AVFormatContext **input_files,
1392 int nb_input_files,
1393 AVStreamMap *stream_maps, int nb_stream_maps)
1394 {
1395 int ret, i, j, k, n, nb_istreams = 0, nb_ostreams = 0;
1396 AVFormatContext *is, *os;
1397 AVCodecContext *codec, *icodec;
1398 AVOutputStream *ost, **ost_table = NULL;
1399 AVInputStream *ist, **ist_table = NULL;
1400 AVInputFile *file_table;
1401 int key;
1402 int want_sdp = 1;
1403
1404 file_table= (AVInputFile*) av_mallocz(nb_input_files * sizeof(AVInputFile));
1405 if (!file_table)
1406 goto fail;
1407
1408 /* input stream init */
1409 j = 0;
1410 for(i=0;i<nb_input_files;i++) {
1411 is = input_files[i];
1412 file_table[i].ist_index = j;
1413 file_table[i].nb_streams = is->nb_streams;
1414 j += is->nb_streams;
1415 }
1416 nb_istreams = j;
1417
1418 ist_table = av_mallocz(nb_istreams * sizeof(AVInputStream *));
1419 if (!ist_table)
1420 goto fail;
1421
1422 for(i=0;i<nb_istreams;i++) {
1423 ist = av_mallocz(sizeof(AVInputStream));
1424 if (!ist)
1425 goto fail;
1426 ist_table[i] = ist;
1427 }
1428 j = 0;
1429 for(i=0;i<nb_input_files;i++) {
1430 is = input_files[i];
1431 for(k=0;k<is->nb_streams;k++) {
1432 ist = ist_table[j++];
1433 ist->st = is->streams[k];
1434 ist->file_index = i;
1435 ist->index = k;
1436 ist->discard = 1; /* the stream is discarded by default
1437 (changed later) */
1438
1439 if (ist->st->codec->rate_emu) {
1440 ist->start = av_gettime();
1441 ist->frame = 0;
1442 }
1443 }
1444 }
1445
1446 /* output stream init */
1447 nb_ostreams = 0;
1448 for(i=0;i<nb_output_files;i++) {
1449 os = output_files[i];
1450 if (!os->nb_streams) {
1451 fprintf(stderr, "Output file does not contain any stream\n");
1452 exit(1);
1453 }
1454 nb_ostreams += os->nb_streams;
1455 }
1456 if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) {
1457 fprintf(stderr, "Number of stream maps must match number of output streams\n");
1458 exit(1);
1459 }
1460
1461 /* Sanity check the mapping args -- do the input files & streams exist? */
1462 for(i=0;i<nb_stream_maps;i++) {
1463 int fi = stream_maps[i].file_index;
1464 int si = stream_maps[i].stream_index;
1465
1466 if (fi < 0 || fi > nb_input_files - 1 ||
1467 si < 0 || si > file_table[fi].nb_streams - 1) {
1468 fprintf(stderr,"Could not find input stream #%d.%d\n", fi, si);
1469 exit(1);
1470 }
1471 fi = stream_maps[i].sync_file_index;
1472 si = stream_maps[i].sync_stream_index;
1473 if (fi < 0 || fi > nb_input_files - 1 ||
1474 si < 0 || si > file_table[fi].nb_streams - 1) {
1475 fprintf(stderr,"Could not find sync stream #%d.%d\n", fi, si);
1476 exit(1);
1477 }
1478 }
1479
1480 ost_table = av_mallocz(sizeof(AVOutputStream *) * nb_ostreams);
1481 if (!ost_table)
1482 goto fail;
1483 for(i=0;i<nb_ostreams;i++) {
1484 ost = av_mallocz(sizeof(AVOutputStream));
1485 if (!ost)
1486 goto fail;
1487 ost_table[i] = ost;
1488 }
1489
1490 n = 0;
1491 for(k=0;k<nb_output_files;k++) {
1492 os = output_files[k];
1493 for(i=0;i<os->nb_streams;i++) {
1494 int found;
1495 ost = ost_table[n++];
1496 ost->file_index = k;
1497 ost->index = i;
1498 ost->st = os->streams[i];
1499 if (nb_stream_maps > 0) {
1500 ost->source_index = file_table[stream_maps[n-1].file_index].ist_index +
1501 stream_maps[n-1].stream_index;
1502
1503 /* Sanity check that the stream types match */
1504 if (ist_table[ost->source_index]->st->codec->codec_type != ost->st->codec->codec_type) {
1505 fprintf(stderr, "Codec type mismatch for mapping #%d.%d -> #%d.%d\n",
1506 stream_maps[n-1].file_index, stream_maps[n-1].stream_index,
1507 ost->file_index, ost->index);
1508 exit(1);
1509 }
1510
1511 } else {
1512 if(opt_programid) {
1513 found = 0;
1514 j = stream_index_from_inputs(input_files, nb_input_files, file_table, ist_table, ost->st->codec->codec_type, opt_programid);
1515 if(j != -1) {
1516 ost->source_index = j;
1517 found = 1;
1518 }
1519 } else {
1520 /* get corresponding input stream index : we select the first one with the right type */
1521 found = 0;
1522 for(j=0;j<nb_istreams;j++) {
1523 ist = ist_table[j];
1524 if (ist->discard &&
1525 ist->st->codec->codec_type == ost->st->codec->codec_type) {
1526 ost->source_index = j;
1527 found = 1;
1528 break;
1529 }
1530 }
1531 }
1532
1533 if (!found) {
1534 if(! opt_programid) {
1535 /* try again and reuse existing stream */
1536 for(j=0;j<nb_istreams;j++) {
1537 ist = ist_table[j];
1538 if (ist->st->codec->codec_type == ost->st->codec->codec_type) {
1539 ost->source_index = j;
1540 found = 1;
1541 }
1542 }
1543 }
1544 if (!found) {
1545 fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
1546 ost->file_index, ost->index);
1547 exit(1);
1548 }
1549 }
1550 }
1551 ist = ist_table[ost->source_index];
1552 ist->discard = 0;
1553 ost->sync_ist = (nb_stream_maps > 0) ?
1554 ist_table[file_table[stream_maps[n-1].sync_file_index].ist_index +
1555 stream_maps[n-1].sync_stream_index] : ist;
1556 }
1557 }
1558
1559 /* for each output stream, we compute the right encoding parameters */
1560 for(i=0;i<nb_ostreams;i++) {
1561 ost = ost_table[i];
1562 os = output_files[ost->file_index];
1563 ist = ist_table[ost->source_index];
1564
1565 codec = ost->st->codec;
1566 icodec = ist->st->codec;
1567
1568 if (!ost->st->language[0])
1569 av_strlcpy(ost->st->language, ist->st->language,
1570 sizeof(ost->st->language));
1571
1572 if (ost->st->stream_copy) {
1573 /* if stream_copy is selected, no need to decode or encode */
1574 codec->codec_id = icodec->codec_id;
1575 codec->codec_type = icodec->codec_type;
1576
1577 if(!codec->codec_tag){
1578 if( !os->oformat->codec_tag
1579 || av_codec_get_id (os->oformat->codec_tag, icodec->codec_tag) > 0
1580 || av_codec_get_tag(os->oformat->codec_tag, icodec->codec_id) <= 0)
1581 codec->codec_tag = icodec->codec_tag;
1582 }
1583
1584 codec->bit_rate = icodec->bit_rate;
1585 codec->extradata= icodec->extradata;
1586 codec->extradata_size= icodec->extradata_size;
1587 if(av_q2d(icodec->time_base) > av_q2d(ist->st->time_base) && av_q2d(ist->st->time_base) < 1.0/1000)
1588 codec->time_base = icodec->time_base;
1589 else
1590 codec->time_base = ist->st->time_base;
1591 switch(codec->codec_type) {
1592 case CODEC_TYPE_AUDIO:
1593 codec->sample_rate = icodec->sample_rate;
1594 codec->channels = icodec->channels;
1595 codec->frame_size = icodec->frame_size;
1596 codec->block_align= icodec->block_align;
1597 if(codec->block_align == 1 && codec->codec_id == CODEC_ID_MP3)
1598 codec->block_align= 0;
1599 break;
1600 case CODEC_TYPE_VIDEO:
1601 if(using_vhook) {
1602 fprintf(stderr,"-vcodec copy and -vhook are incompatible (frames are not decoded)\n");
1603 exit(1);
1604 }
1605 codec->pix_fmt = icodec->pix_fmt;
1606 codec->width = icodec->width;
1607 codec->height = icodec->height;
1608 codec->has_b_frames = icodec->has_b_frames;
1609 break;
1610 case CODEC_TYPE_SUBTITLE:
1611 break;
1612 default:
1613 abort();
1614 }
1615 } else {
1616 switch(codec->codec_type) {
1617 case CODEC_TYPE_AUDIO:
1618 if (av_fifo_init(&ost->fifo, 2 * MAX_AUDIO_PACKET_SIZE))
1619 goto fail;
1620
1621 if (codec->channels == icodec->channels &&
1622 codec->sample_rate == icodec->sample_rate) {
1623 ost->audio_resample = 0;
1624 } else {
1625 if (codec->channels != icodec->channels &&
1626 (icodec->codec_id == CODEC_ID_AC3 ||
1627 icodec->codec_id == CODEC_ID_DTS)) {
1628 /* Special case for 5:1 AC3 and DTS input */
1629 /* and mono or stereo output */
1630 /* Request specific number of channels */
1631 icodec->channels = codec->channels;
1632 if (codec->sample_rate == icodec->sample_rate)
1633 ost->audio_resample = 0;
1634 else {
1635 ost->audio_resample = 1;
1636 }
1637 } else {
1638 ost->audio_resample = 1;
1639 }
1640 }
1641 if(audio_sync_method>1)
1642 ost->audio_resample = 1;
1643
1644 if(ost->audio_resample){
1645 ost->resample = audio_resample_init(codec->channels, icodec->channels,
1646 codec->sample_rate, icodec->sample_rate);
1647 if(!ost->resample){
1648 printf("Can't resample. Aborting.\n");
1649 abort();
1650 }
1651 }
1652 ist->decoding_needed = 1;
1653 ost->encoding_needed = 1;
1654 break;
1655 case CODEC_TYPE_VIDEO:
1656 ost->video_crop = ((frame_leftBand + frame_rightBand + frame_topBand + frame_bottomBand) != 0);
1657 ost->video_pad = ((frame_padleft + frame_padright + frame_padtop + frame_padbottom) != 0);
1658 ost->video_resample = ((codec->width != icodec->width -
1659 (frame_leftBand + frame_rightBand) +
1660 (frame_padleft + frame_padright)) ||
1661 (codec->height != icodec->height -
1662 (frame_topBand + frame_bottomBand) +
1663 (frame_padtop + frame_padbottom)) ||
1664 (codec->pix_fmt != icodec->pix_fmt));
1665 if (ost->video_crop) {
1666 ost->topBand = frame_topBand;
1667 ost->leftBand = frame_leftBand;
1668 }
1669 if (ost->video_pad) {
1670 ost->padtop = frame_padtop;
1671 ost->padleft = frame_padleft;
1672 ost->padbottom = frame_padbottom;
1673 ost->padright = frame_padright;
1674 if (!ost->video_resample) {
1675 avcodec_get_frame_defaults(&ost->pict_tmp);
1676 if( avpicture_alloc( (AVPicture*)&ost->pict_tmp, codec->pix_fmt,
1677 codec->width, codec->height ) )
1678 goto fail;
1679 }
1680 }
1681 if (ost->video_resample) {
1682 avcodec_get_frame_defaults(&ost->pict_tmp);
1683 if( avpicture_alloc( (AVPicture*)&ost->pict_tmp, codec->pix_fmt,
1684 codec->width, codec->height ) ) {
1685 fprintf(stderr, "Cannot allocate temp picture, check pix fmt\n");
1686 exit(1);
1687 }
1688 sws_flags = av_get_int(sws_opts, "sws_flags", NULL);
1689 ost->img_resample_ctx = sws_getContext(
1690 icodec->width - (frame_leftBand + frame_rightBand),
1691 icodec->height - (frame_topBand + frame_bottomBand),
1692 icodec->pix_fmt,
1693 codec->width - (frame_padleft + frame_padright),
1694 codec->height - (frame_padtop + frame_padbottom),
1695 codec->pix_fmt,
1696 sws_flags, NULL, NULL, NULL);
1697 if (ost->img_resample_ctx == NULL) {
1698 fprintf(stderr, "Cannot get resampling context\n");
1699 exit(1);
1700 }
1701 ost->resample_height = icodec->height - (frame_topBand + frame_bottomBand);
1702 }
1703 ost->encoding_needed = 1;
1704 ist->decoding_needed = 1;
1705 break;
1706 case CODEC_TYPE_SUBTITLE:
1707 ost->encoding_needed = 1;
1708 ist->decoding_needed = 1;
1709 break;
1710 default:
1711 abort();
1712 break;
1713 }
1714 /* two pass mode */
1715 if (ost->encoding_needed &&
1716 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
1717 char logfilename[1024];
1718 FILE *f;
1719 int size;
1720 char *logbuffer;
1721
1722 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
1723 pass_logfilename ?
1724 pass_logfilename : DEFAULT_PASS_LOGFILENAME, i);
1725 if (codec->flags & CODEC_FLAG_PASS1) {
1726 f = fopen(logfilename, "w");
1727 if (!f) {
1728 perror(logfilename);
1729 exit(1);
1730 }
1731 ost->logfile = f;
1732 } else {
1733 /* read the log file */
1734 f = fopen(logfilename, "r");
1735 if (!f) {
1736 perror(logfilename);
1737 exit(1);
1738 }
1739 fseek(f, 0, SEEK_END);
1740 size = ftell(f);
1741 fseek(f, 0, SEEK_SET);
1742 logbuffer = av_malloc(size + 1);
1743 if (!logbuffer) {
1744 fprintf(stderr, "Could not allocate log buffer\n");
1745 exit(1);
1746 }
1747 size = fread(logbuffer, 1, size, f);
1748 fclose(f);
1749 logbuffer[size] = '\0';
1750 codec->stats_in = logbuffer;
1751 }
1752 }
1753 }
1754 if(codec->codec_type == CODEC_TYPE_VIDEO){
1755 int size= codec->width * codec->height;
1756 bit_buffer_size= FFMAX(bit_buffer_size, 4*size);
1757 }
1758 }
1759
1760 if (!bit_buffer)
1761 bit_buffer = av_malloc(bit_buffer_size);
1762 if (!bit_buffer)
1763 goto fail;
1764
1765 /* dump the file output parameters - cannot be done before in case
1766 of stream copy */
1767 for(i=0;i<nb_output_files;i++) {
1768 dump_format(output_files[i], i, output_files[i]->filename, 1);
1769 }
1770
1771 /* dump the stream mapping */
1772 if (verbose >= 0) {
1773 fprintf(stderr, "Stream mapping:\n");
1774 for(i=0;i<nb_ostreams;i++) {
1775 ost = ost_table[i];
1776 fprintf(stderr, " Stream #%d.%d -> #%d.%d",
1777 ist_table[ost->source_index]->file_index,
1778 ist_table[ost->source_index]->index,
1779 ost->file_index,
1780 ost->index);
1781 if (ost->sync_ist != ist_table[ost->source_index])
1782 fprintf(stderr, " [sync #%d.%d]",
1783 ost->sync_ist->file_index,
1784 ost->sync_ist->index);
1785 fprintf(stderr, "\n");
1786 }
1787 }
1788
1789 /* open each encoder */
1790 for(i=0;i<nb_ostreams;i++) {
1791 ost = ost_table[i];
1792 if (ost->encoding_needed) {
1793 AVCodec *codec;
1794 codec = avcodec_find_encoder(ost->st->codec->codec_id);
1795 if (!codec) {
1796 fprintf(stderr, "Unsupported codec for output stream #%d.%d\n",
1797 ost->file_index, ost->index);
1798 exit(1);
1799 }
1800 if (avcodec_open(ost->st->codec, codec) < 0) {
1801 fprintf(stderr, "Error while opening codec for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height\n",
1802 ost->file_index, ost->index);
1803 exit(1);
1804 }
1805 extra_size += ost->st->codec->extradata_size;
1806 }
1807 }
1808
1809 /* open each decoder */
1810 for(i=0;i<nb_istreams;i++) {
1811 ist = ist_table[i];
1812 if (ist->decoding_needed) {
1813 AVCodec *codec;
1814 codec = avcodec_find_decoder(ist->st->codec->codec_id);
1815 if (!codec) {
1816 fprintf(stderr, "Unsupported codec (id=%d) for input stream #%d.%d\n",
1817 ist->st->codec->codec_id, ist->file_index, ist->index);
1818 exit(1);
1819 }
1820 if (avcodec_open(ist->st->codec, codec) < 0) {
1821 fprintf(stderr, "Error while opening codec for input stream #%d.%d\n",
1822 ist->file_index, ist->index);
1823 exit(1);
1824 }
1825 //if (ist->st->codec->codec_type == CODEC_TYPE_VIDEO)
1826 // ist->st->codec->flags |= CODEC_FLAG_REPEAT_FIELD;
1827 }
1828 }
1829
1830 /* init pts */
1831 for(i=0;i<nb_istreams;i++) {
1832 ist = ist_table[i];
1833 is = input_files[ist->file_index];
1834 ist->pts = 0;
1835 ist->next_pts=0;
1836 if( input_files_ts_offset[ist->file_index] != -is->start_time
1837 && !(is->start_time == AV_NOPTS_VALUE && input_files_ts_offset[ist->file_index]==0))
1838 ist->next_pts= AV_NOPTS_VALUE;
1839 ist->is_start = 1;
1840 }
1841
1842 /* set meta data information from input file if required */
1843 for (i=0;i<nb_meta_data_maps;i++) {
1844 AVFormatContext *out_file;
1845 AVFormatContext *in_file;
1846
1847 int out_file_index = meta_data_maps[i].out_file;
1848 int in_file_index = meta_data_maps[i].in_file;
1849 if ( out_file_index < 0 || out_file_index >= nb_output_files ) {
1850 fprintf(stderr, "Invalid output file index %d map_meta_data(%d,%d)\n", out_file_index, out_file_index, in_file_index);
1851 ret = AVERROR(EINVAL);
1852 goto fail;
1853 }
1854 if ( in_file_index < 0 || in_file_index >= nb_input_files ) {
1855 fprintf(stderr, "Invalid input file index %d map_meta_data(%d,%d)\n", in_file_index, out_file_index, in_file_index);
1856 ret = AVERROR(EINVAL);
1857 goto fail;
1858 }
1859
1860 out_file = output_files[out_file_index];
1861 in_file = input_files[in_file_index];
1862
1863 strcpy(out_file->title, in_file->title);
1864 strcpy(out_file->author, in_file->author);
1865 strcpy(out_file->copyright, in_file->copyright);
1866 strcpy(out_file->comment, in_file->comment);
1867 strcpy(out_file->album, in_file->album);
1868 out_file->year = in_file->year;
1869 out_file->track = in_file->track;
1870 strcpy(out_file->genre, in_file->genre);
1871 }
1872
1873 /* open files and write file headers */
1874 for(i=0;i<nb_output_files;i++) {
1875 os = output_files[i];
1876 if (av_write_header(os) < 0) {
1877 fprintf(stderr, "Could not write header for output file #%d (incorrect codec parameters ?)\n", i);
1878 ret = AVERROR(EINVAL);
1879 goto fail;
1880 }
1881 if (strcmp(output_files[i]->oformat->name, "rtp")) {
1882 want_sdp = 0;
1883 }
1884 }
1885 if (want_sdp) {
1886 print_sdp(output_files, nb_output_files);
1887 }
1888
1889 if ( !using_stdin && verbose >= 0) {
1890 fprintf(stderr, "Press [q] to stop encoding\n");
1891 url_set_interrupt_cb(decode_interrupt_cb);
1892 }
1893 term_init();
1894
1895 key = -1;
1896 timer_start = av_gettime();
1897
1898 for(; received_sigterm == 0;) {
1899 int file_index, ist_index;
1900 AVPacket pkt;
1901 double ipts_min;
1902 double opts_min;
1903
1904 redo:
1905 ipts_min= 1e100;
1906 opts_min= 1e100;
1907 /* if 'q' pressed, exits */
1908 if (!using_stdin) {
1909 if (q_pressed)
1910 break;
1911 /* read_key() returns 0 on EOF */
1912 key = read_key();
1913 if (key == 'q')
1914 break;
1915 }
1916
1917 /* select the stream that we must read now by looking at the
1918 smallest output pts */
1919 file_index = -1;
1920 for(i=0;i<nb_ostreams;i++) {
1921 double ipts, opts;
1922 ost = ost_table[i];
1923 os = output_files[ost->file_index];
1924 ist = ist_table[ost->source_index];
1925 if(ost->st->codec->codec_type == CODEC_TYPE_VIDEO)
1926 opts = ost->sync_opts * av_q2d(ost->st->codec->time_base);
1927 else
1928 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
1929 ipts = (double)ist->pts;
1930 if (!file_table[ist->file_index].eof_reached){
1931 if(ipts < ipts_min) {
1932 ipts_min = ipts;
1933 if(input_sync ) file_index = ist->file_index;
1934 }
1935 if(opts < opts_min) {
1936 opts_min = opts;
1937 if(!input_sync) file_index = ist->file_index;
1938 }
1939 }
1940 if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
1941 file_index= -1;
1942 break;
1943 }
1944 }
1945 /* if none, if is finished */
1946 if (file_index < 0) {
1947 break;
1948 }
1949
1950 /* finish if recording time exhausted */
1951 if (recording_time > 0 && opts_min >= (recording_time / 1000000.0))
1952 break;
1953
1954 /* finish if limit size exhausted */
1955 if (limit_filesize != 0 && limit_filesize < url_ftell(&output_files[0]->pb))
1956 break;
1957
1958 /* read a frame from it and output it in the fifo */
1959 is = input_files[file_index];
1960 if (av_read_frame(is, &pkt) < 0) {
1961 file_table[file_index].eof_reached = 1;
1962 if (opt_shortest)
1963 break;
1964 else
1965 continue;
1966 }
1967
1968 if (do_pkt_dump) {
1969 av_pkt_dump_log(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump);
1970 }
1971 /* the following test is needed in case new streams appear
1972 dynamically in stream : we ignore them */
1973 if (pkt.stream_index >= file_table[file_index].nb_streams)
1974 goto discard_packet;
1975 ist_index = file_table[file_index].ist_index + pkt.stream_index;
1976 ist = ist_table[ist_index];
1977 if (ist->discard)
1978 goto discard_packet;
1979
1980 if (pkt.dts != AV_NOPTS_VALUE)
1981 pkt.dts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
1982 if (pkt.pts != AV_NOPTS_VALUE)
1983 pkt.pts += av_rescale_q(input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ist->st->time_base);
1984
1985 // 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);
1986 if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE) {
1987 int64_t pkt_dts= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
1988 int64_t delta= pkt_dts - ist->next_pts;
1989 if((FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE || pkt_dts+1<ist->pts)&& !copy_ts){
1990 input_files_ts_offset[ist->file_index]-= delta;
1991 if (verbose > 2)
1992 fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n", delta, input_files_ts_offset[ist->file_index]);
1993 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
1994 if(pkt.pts != AV_NOPTS_VALUE)
1995 pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
1996 }
1997 }
1998
1999 //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->index, pkt.size);
2000 if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
2001
2002 if (verbose >= 0)
2003 fprintf(stderr, "Error while decoding stream #%d.%d\n",
2004 ist->file_index, ist->index);
2005
2006 av_free_packet(&pkt);
2007 goto redo;
2008 }
2009
2010 discard_packet:
2011 av_free_packet(&pkt);
2012
2013 /* dump report by using the output first video and audio streams */
2014 print_report(output_files, ost_table, nb_ostreams, 0);
2015 }
2016
2017 /* at the end of stream, we must flush the decoder buffers */
2018 for(i=0;i<nb_istreams;i++) {
2019 ist = ist_table[i];
2020 if (ist->decoding_needed) {
2021 output_packet(ist, i, ost_table, nb_ostreams, NULL);
2022 }
2023 }
2024
2025 term_exit();
2026
2027 /* write the trailer if needed and close file */
2028 for(i=0;i<nb_output_files;i++) {
2029 os = output_files[i];
2030 av_write_trailer(os);
2031 }
2032
2033 /* dump report by using the first video and audio streams */
2034 print_report(output_files, ost_table, nb_ostreams, 1);
2035
2036 /* close each encoder */
2037 for(i=0;i<nb_ostreams;i++) {
2038 ost = ost_table[i];
2039 if (ost->encoding_needed) {
2040 av_freep(&ost->st->codec->stats_in);
2041 avcodec_close(ost->st->codec);
2042 }
2043 }
2044
2045 /* close each decoder */
2046 for(i=0;i<nb_istreams;i++) {
2047 ist = ist_table[i];
2048 if (ist->decoding_needed) {
2049 avcodec_close(ist->st->codec);
2050 }
2051 }
2052
2053 /* finished ! */
2054
2055 ret = 0;
2056 fail1:
2057 av_freep(&bit_buffer);
2058 av_free(file_table);
2059
2060 if (ist_table) {
2061 for(i=0;i<nb_istreams;i++) {
2062 ist = ist_table[i];
2063 av_free(ist);
2064 }
2065 av_free(ist_table);
2066 }
2067 if (ost_table) {
2068 for(i=0;i<nb_ostreams;i++) {
2069 ost = ost_table[i];
2070 if (ost) {
2071 if (ost->logfile) {
2072 fclose(ost->logfile);
2073 ost->logfile = NULL;
2074 }
2075 av_fifo_free(&ost->fifo); /* works even if fifo is not
2076 initialized but set to zero */
2077 av_free(ost->pict_tmp.data[0]);
2078 if (ost->video_resample)
2079 sws_freeContext(ost->img_resample_ctx);
2080 if (ost->audio_resample)
2081 audio_resample_close(ost->resample);
2082 av_free(ost);
2083 }
2084 }
2085 av_free(ost_table);
2086 }
2087 return ret;
2088 fail:
2089 ret = AVERROR(ENOMEM);
2090 goto fail1;
2091 }
2092
2093 #if 0
2094 int file_read(const char *filename)
2095 {
2096 URLContext *h;
2097 unsigned char buffer[1024];
2098 int len, i;
2099
2100 if (url_open(&h, filename, O_RDONLY) < 0) {
2101 printf("could not open '%s'\n", filename);
2102 return -1;
2103 }
2104 for(;;) {
2105 len = url_read(h, buffer, sizeof(buffer));
2106 if (len <= 0)
2107 break;
2108 for(i=0;i<len;i++) putchar(buffer[i]);
2109 }
2110 url_close(h);
2111 return 0;
2112 }
2113 #endif
2114
2115 static void opt_format(const char *arg)
2116 {
2117 /* compatibility stuff for pgmyuv */
2118 if (!strcmp(arg, "pgmyuv")) {
2119 pgmyuv_compatibility_hack=1;
2120 // opt_image_format(arg);
2121 arg = "image2";
2122 fprintf(stderr, "pgmyuv format is deprecated, use image2\n");
2123 }
2124
2125 file_iformat = av_find_input_format(arg);
2126 file_oformat = guess_format(arg, NULL, NULL);
2127 if (!file_iformat && !file_oformat) {
2128 fprintf(stderr, "Unknown input or output format: %s\n", arg);
2129 exit(1);
2130 }
2131 }
2132
2133 static void opt_video_rc_eq(char *arg)
2134 {
2135 video_rc_eq = arg;
2136 }
2137
2138 static void opt_video_rc_override_string(char *arg)
2139 {
2140 video_rc_override_string = arg;
2141 }
2142
2143 static void opt_me_threshold(const char *arg)
2144 {
2145 me_threshold = atoi(arg);
2146 }
2147
2148 static void opt_verbose(const char *arg)
2149 {
2150 verbose = atoi(arg);
2151 av_log_level = atoi(arg);
2152 }
2153
2154 static void opt_frame_rate(const char *arg)
2155 {
2156 if (av_parse_video_frame_rate(&frame_rate, arg) < 0) {
2157 fprintf(stderr, "Incorrect frame rate\n");
2158 exit(1);
2159 }
2160 }
2161
2162 static void opt_frame_crop_top(const char *arg)
2163 {
2164 frame_topBand = atoi(arg);
2165 if (frame_topBand < 0) {
2166 fprintf(stderr, "Incorrect top crop size\n");
2167 exit(1);
2168 }
2169 if ((frame_topBand % 2) != 0) {
2170 fprintf(stderr, "Top crop size must be a multiple of 2\n");
2171 exit(1);
2172 }
2173 if ((frame_topBand) >= frame_height){
2174 fprintf(stderr, "Vertical crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");
2175 exit(1);
2176 }
2177 frame_height -= frame_topBand;
2178 }
2179
2180 static void opt_frame_crop_bottom(const char *arg)
2181 {
2182 frame_bottomBand = atoi(arg);
2183 if (frame_bottomBand < 0) {
2184 fprintf(stderr, "Incorrect bottom crop size\n");
2185 exit(1);
2186 }
2187 if ((frame_bottomBand % 2) != 0) {
2188 fprintf(stderr, "Bottom crop size must be a multiple of 2\n");
2189 exit(1);
2190 }
2191 if ((frame_bottomBand) >= frame_height){
2192 fprintf(stderr, "Vertical crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");
2193 exit(1);
2194 }
2195 frame_height -= frame_bottomBand;
2196 }
2197
2198 static void opt_frame_crop_left(const char *arg)
2199 {
2200 frame_leftBand = atoi(arg);
2201 if (frame_leftBand < 0) {
2202 fprintf(stderr, "Incorrect left crop size\n");
2203 exit(1);
2204 }
2205 if ((frame_leftBand % 2) != 0) {
2206 fprintf(stderr, "Left crop size must be a multiple of 2\n");
2207 exit(1);
2208 }
2209 if ((frame_leftBand) >= frame_width){
2210 fprintf(stderr, "Horizontal crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");
2211 exit(1);
2212 }
2213 frame_width -= frame_leftBand;
2214 }
2215
2216 static void opt_frame_crop_right(const char *arg)
2217 {
2218 frame_rightBand = atoi(arg);
2219 if (frame_rightBand < 0) {
2220 fprintf(stderr, "Incorrect right crop size\n");
2221 exit(1);
2222 }
2223 if ((frame_rightBand % 2) != 0) {
2224 fprintf(stderr, "Right crop size must be a multiple of 2\n");
2225 exit(1);
2226 }
2227 if ((frame_rightBand) >= frame_width){
2228 fprintf(stderr, "Horizontal crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");
2229 exit(1);
2230 }
2231 frame_width -= frame_rightBand;
2232 }
2233
2234 static void opt_frame_size(const char *arg)
2235 {
2236 if (av_parse_video_frame_size(&frame_width, &frame_height, arg) < 0) {
2237 fprintf(stderr, "Incorrect frame size\n");
2238 exit(1);
2239 }
2240 if ((frame_width % 2) != 0 || (frame_height % 2) != 0) {
2241 fprintf(stderr, "Frame size must be a multiple of 2\n");
2242 exit(1);
2243 }
2244 }
2245
2246
2247 #define SCALEBITS 10
2248 #define ONE_HALF (1 << (SCALEBITS - 1))
2249 #define FIX(x) ((int) ((x) * (1<<SCALEBITS) + 0.5))
2250
2251 #define RGB_TO_Y(r, g, b) \
2252 ((FIX(0.29900) * (r) + FIX(0.58700) * (g) + \
2253 FIX(0.11400) * (b) + ONE_HALF) >> SCALEBITS)
2254
2255 #define RGB_TO_U(r1, g1, b1, shift)\
2256 (((- FIX(0.16874) * r1 - FIX(0.33126) * g1 + \
2257 FIX(0.50000) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
2258
2259 #define RGB_TO_V(r1, g1, b1, shift)\
2260 (((FIX(0.50000) * r1 - FIX(0.41869) * g1 - \
2261 FIX(0.08131) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
2262
2263 static void opt_pad_color(const char *arg) {
2264 /* Input is expected to be six hex digits similar to
2265 how colors are expressed in html tags (but without the #) */
2266 int rgb = strtol(arg, NULL, 16);
2267 int r,g,b;
2268
2269 r = (rgb >> 16);
2270 g = ((rgb >> 8) & 255);
2271 b = (rgb & 255);
2272
2273 padcolor[0] = RGB_TO_Y(r,g,b);
2274 padcolor[1] = RGB_TO_U(r,g,b,0);
2275 padcolor[2] = RGB_TO_V(r,g,b,0);
2276 }
2277
2278 static void opt_frame_pad_top(const char *arg)
2279 {
2280 frame_padtop = atoi(arg);
2281 if (frame_padtop < 0) {
2282 fprintf(stderr, "Incorrect top pad size\n");
2283 exit(1);
2284 }
2285 if ((frame_padtop % 2) != 0) {
2286 fprintf(stderr, "Top pad size must be a multiple of 2\n");
2287 exit(1);
2288 }
2289 }
2290
2291 static void opt_frame_pad_bottom(const char *arg)
2292 {
2293 frame_padbottom = atoi(arg);
2294 if (frame_padbottom < 0) {
2295 fprintf(stderr, "Incorrect bottom pad size\n");
2296 exit(1);
2297 }
2298 if ((frame_padbottom % 2) != 0) {
2299 fprintf(stderr, "Bottom pad size must be a multiple of 2\n");
2300 exit(1);
2301 }
2302 }
2303
2304
2305 static void opt_frame_pad_left(const char *arg)
2306 {
2307 frame_padleft = atoi(arg);
2308 if (frame_padleft < 0) {
2309 fprintf(stderr, "Incorrect left pad size\n");
2310 exit(1);
2311 }
2312 if ((frame_padleft % 2) != 0) {
2313 fprintf(stderr, "Left pad size must be a multiple of 2\n");
2314 exit(1);
2315 }
2316 }
2317
2318
2319 static void opt_frame_pad_right(const char *arg)
2320 {
2321 frame_padright = atoi(arg);
2322 if (frame_padright < 0) {
2323 fprintf(stderr, "Incorrect right pad size\n");
2324 exit(1);
2325 }
2326 if ((frame_padright % 2) != 0) {
2327 fprintf(stderr, "Right pad size must be a multiple of 2\n");
2328 exit(1);
2329 }
2330 }
2331
2332 void list_pix_fmts(void)
2333 {
2334 int i;
2335 char pix_fmt_str[128];
2336 for (i=-1; i < PIX_FMT_NB; i++) {
2337 avcodec_pix_fmt_string (pix_fmt_str, sizeof(pix_fmt_str), i);
2338 fprintf(stdout, "%s\n", pix_fmt_str);
2339 }
2340 }
2341
2342 static void opt_frame_pix_fmt(const char *arg)
2343 {
2344 if (strcmp(arg, "list"))
2345 frame_pix_fmt = avcodec_get_pix_fmt(arg);
2346 else {
2347 list_pix_fmts();
2348 exit(0);
2349 }
2350 }
2351
2352 static void opt_frame_aspect_ratio(const char *arg)
2353 {
2354 int x = 0, y = 0;
2355 double ar = 0;
2356 const char *p;
2357
2358 p = strchr(arg, ':');
2359 if (p) {
2360 x = strtol(arg, (char **)&arg, 10);
2361 if (arg == p)
2362 y = strtol(arg+1, (char **)&arg, 10);
2363 if (x > 0 && y > 0)
2364 ar = (double)x / (double)y;
2365 } else
2366 ar = strtod(arg, (char **)&arg);
2367
2368 if (!ar) {
2369 fprintf(stderr, "Incorrect aspect ratio specification.\n");
2370 exit(1);
2371 }
2372 frame_aspect_ratio = ar;
2373 }
2374
2375 static void opt_qscale(const char *arg)
2376 {
2377 video_qscale = atof(arg);
2378 if (video_qscale <= 0 ||
2379 video_qscale > 255) {
2380 fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2381 exit(1);
2382 }
2383 }
2384
2385 static void opt_qdiff(const char *arg)
2386 {
2387 video_qdiff = atoi(arg);
2388 if (video_qdiff < 0 ||
2389 video_qdiff > 31) {
2390 fprintf(stderr, "qdiff must be >= 1 and <= 31\n");
2391 exit(1);
2392 }
2393 }
2394
2395 static void opt_strict(const char *arg)
2396 {
2397 strict= atoi(arg);
2398 }
2399
2400 static void opt_top_field_first(const char *arg)
2401 {
2402 top_field_first= atoi(arg);
2403 }
2404
2405 static void opt_thread_count(const char *arg)
2406 {
2407 thread_count= atoi(arg);
2408 #if !defined(HAVE_THREADS)
2409 if (verbose >= 0)
2410 fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2411 #endif
2412 }
2413
2414 static void opt_audio_rate(const char *arg)
2415 {
2416 audio_sample_rate = atoi(arg);
2417 }
2418
2419 static void opt_audio_channels(const char *arg)
2420 {
2421 audio_channels = atoi(arg);
2422 }
2423
2424 static void opt_video_channel(const char *arg)
2425 {
2426 video_channel = strtol(arg, NULL, 0);
2427 }
2428
2429 static void opt_video_standard(const char *arg)
2430 {
2431 video_standard = av_strdup(arg);
2432 }
2433
2434 static void opt_codec(int *pstream_copy, char **pcodec_name,
2435 int codec_type, const char *arg)
2436 {
2437 av_freep(pcodec_name);
2438 if (!strcmp(arg, "copy")) {
2439 *pstream_copy = 1;
2440 } else {
2441 *pcodec_name = av_strdup(arg);
2442 }
2443 }
2444
2445 static void opt_audio_codec(const char *arg)
2446 {
2447 opt_codec(&audio_stream_copy, &audio_codec_name, CODEC_TYPE_AUDIO, arg);
2448 }
2449
2450 static void opt_audio_tag(const char *arg)
2451 {
2452 char *tail;
2453 audio_codec_tag= strtol(arg, &tail, 0);
2454
2455 if(!tail || *tail)
2456 audio_codec_tag= arg[0] + (arg[1]<<8) + (arg[2]<<16) + (arg[3]<<24);
2457 }
2458
2459 static void opt_video_tag(const char *arg)
2460 {
2461 char *tail;
2462 video_codec_tag= strtol(arg, &tail, 0);
2463
2464 if(!tail || *tail)
2465 video_codec_tag= arg[0] + (arg[1]<<8) + (arg[2]<<16) + (arg[3]<<24);
2466 }
2467
2468 #ifdef CONFIG_VHOOK
2469 static void add_frame_hooker(const char *arg)
2470 {
2471 int argc = 0;
2472 char *argv[64];
2473 int i;
2474 char *args = av_strdup(arg);
2475
2476 using_vhook = 1;
2477
2478 argv[0] = strtok(args, " ");
2479 while (argc < 62 && (argv[++argc] = strtok(NULL, " "))) {
2480 }
2481
2482 i = frame_hook_add(argc, argv);
2483
2484 if (i != 0) {
2485 fprintf(stderr, "Failed to add video hook function: %s\n", arg);
2486 exit(1);
2487 }
2488 }
2489 #endif
2490
2491 static void opt_video_codec(const char *arg)
2492 {
2493 opt_codec(&video_stream_copy, &video_codec_name, CODEC_TYPE_VIDEO, arg);
2494 }
2495
2496 static void opt_subtitle_codec(const char *arg)
2497 {
2498 opt_codec(&subtitle_stream_copy, &subtitle_codec_name, CODEC_TYPE_SUBTITLE, arg);
2499 }
2500
2501 static void opt_map(const char *arg)
2502 {
2503 AVStreamMap *m;
2504 const char *p;
2505
2506 p = arg;
2507 m = &stream_maps[nb_stream_maps++];
2508
2509 m->file_index = strtol(arg, (char **)&p, 0);
2510 if (*p)
2511 p++;
2512
2513 m->stream_index = strtol(p, (char **)&p, 0);
2514 if (*p) {
2515 p++;
2516 m->sync_file_index = strtol(p, (char **)&p, 0);
2517 if (*p)
2518 p++;
2519 m->sync_stream_index = strtol(p, (char **)&p, 0);
2520 } else {
2521 m->sync_file_index = m->file_index;
2522 m->sync_stream_index = m->stream_index;
2523 }
2524 }
2525
2526 static void opt_map_meta_data(const char *arg)
2527 {
2528 AVMetaDataMap *m;
2529 const char *p;
2530
2531 p = arg;
2532 m = &meta_data_maps[nb_meta_data_maps++];
2533
2534 m->out_file = strtol(arg, (char **)&p, 0);
2535 if (*p)
2536 p++;
2537
2538 m->in_file = strtol(p, (char **)&p, 0);
2539 }
2540
2541 static int64_t parse_time_or_die(const char *timestr, int is_duration)
2542 {
2543 int64_t us = parse_date(timestr, is_duration);
2544 if (us == INT64_MIN) {
2545 fprintf(stderr, "Invalid %s specification: %s\n",
2546 is_duration ? "duration" : "date", timestr);
2547 exit(1);
2548 }
2549 return us;
2550 }
2551
2552 static void opt_recording_time(const char *arg)
2553 {
2554 recording_time = parse_time_or_die(arg, 1);
2555 }
2556
2557 static void opt_start_time(const char *arg)
2558 {
2559 start_time = parse_time_or_die(arg, 1);
2560 }
2561
2562 static void opt_rec_timestamp(const char *arg)
2563 {
2564 rec_timestamp = parse_time_or_die(arg, 0) / 1000000;
2565 }
2566
2567 static void opt_input_ts_offset(const char *arg)
2568 {
2569 input_ts_offset = parse_time_or_die(arg, 1);
2570 }
2571
2572 static enum CodecID find_codec_or_die(const char *name, int type, int encoder)
2573 {
2574 char *codec_string = encoder ? "encoder" : "decoder";
2575 AVCodec *codec;
2576
2577 if(!name)
2578 return CODEC_ID_NONE;
2579 codec = encoder ?
2580 avcodec_find_encoder_by_name(name) :
2581 avcodec_find_decoder_by_name(name);
2582 if(!codec) {
2583 av_log(NULL, AV_LOG_ERROR, "Unknown %s '%s'\n", codec_string, name);
2584 exit(1);
2585 }
2586 if(codec->type != type) {
2587 av_log(NULL, AV_LOG_ERROR, "Invalid %s type '%s'\n", codec_string, name);
2588 exit(1);
2589 }
2590 return codec->id;
2591 }
2592
2593 static void opt_input_file(const char *filename)
2594 {
2595 AVFormatContext *ic;
2596 AVFormatParameters params, *ap = &params;
2597 int err, i, ret, rfps, rfps_base;
2598 int64_t timestamp;
2599
2600 if (!strcmp(filename, "-"))
2601 filename = "pipe:";
2602
2603 using_stdin |= !strncmp(filename, "pipe:", 5) ||
2604 !strcmp( filename, "/dev/stdin" );
2605
2606 /* get default parameters from command line */
2607 ic = av_alloc_format_context();
2608
2609 memset(ap, 0, sizeof(*ap));
2610 ap->prealloced_context = 1;
2611 ap->sample_rate = audio_sample_rate;
2612 ap->channels = audio_channels;
2613 ap->time_base.den = frame_rate.num;
2614 ap->time_base.num = frame_rate.den;
2615 ap->width = frame_width + frame_padleft + frame_padright;
2616 ap->height = frame_height + frame_padtop + frame_padbottom;
2617 ap->pix_fmt = frame_pix_fmt;
2618 ap->channel = video_channel;
2619 ap->standard = video_standard;
2620 ap->video_codec_id = find_codec_or_die(video_codec_name, CODEC_TYPE_VIDEO, 0);
2621 ap->audio_codec_id = find_codec_or_die(audio_codec_name, CODEC_TYPE_AUDIO, 0);
2622 if(pgmyuv_compatibility_hack)
2623 ap->video_codec_id= CODEC_ID_PGMYUV;
2624
2625 for(i=0; i<opt_name_count; i++){
2626 const AVOption *opt;
2627 double d= av_get_double(avformat_opts, opt_names[i], &opt);
2628 if(!isnan(d) && (opt->flags&AV_OPT_FLAG_DECODING_PARAM))
2629 av_set_double(ic, opt_names[i], d);
2630 }
2631 /* open the input file with generic libav function */
2632 err = av_open_input_file(&ic, filename, file_iformat, 0, ap);
2633 if (err < 0) {
2634 print_error(filename, err);
2635 exit(1);
2636 }
2637 if(opt_programid) {
2638 int i;
2639 for(i=0; i<ic->nb_programs; i++)
2640 if(ic->programs[i]->id != opt_programid)
2641 ic->programs[i]->discard = AVDISCARD_ALL;
2642 }
2643
2644 ic->loop_input = loop_input;
2645
2646 /* If not enough info to get the stream parameters, we decode the
2647 first frames to get it. (used in mpeg case for example) */
2648 ret = av_find_stream_info(ic);
2649 if (ret < 0 && verbose >= 0) {
2650 fprintf(stderr, "%s: could not find codec parameters\n", filename);
2651 exit(1);
2652 }
2653
2654 timestamp = start_time;
2655 /* add the stream start time */
2656 if (ic->start_time != AV_NOPTS_VALUE)
2657 timestamp += ic->start_time;
2658
2659 /* if seeking requested, we execute it */
2660 if (start_time != 0) {
2661 ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
2662 if (ret < 0) {
2663 fprintf(stderr, "%s: could not seek to position %0.3f\n",
2664 filename, (double)timestamp / AV_TIME_BASE);
2665 }
2666 /* reset seek info */
2667 start_time = 0;
2668 }
2669
2670 /* update the current parameters so that they match the one of the input stream */
2671 for(i=0;i<ic->nb_streams;i++) {
2672 int j;
2673 AVCodecContext *enc = ic->streams[i]->codec;
2674 if(thread_count>1)
2675 avcodec_thread_init(enc, thread_count);
2676 enc->thread_count= thread_count;
2677 switch(enc->codec_type) {
2678 case CODEC_TYPE_AUDIO:
2679 for(j=0; j<opt_name_count; j++){
2680 const AVOption *opt;
2681 double d= av_get_double(avctx_opts[CODEC_TYPE_AUDIO], opt_names[j], &opt);
2682 if(!isnan(d) && (opt->flags&AV_OPT_FLAG_AUDIO_PARAM) && (opt->flags&AV_OPT_FLAG_DECODING_PARAM))
2683 av_set_double(enc, opt_names[j], d);
2684 }
2685 //fprintf(stderr, "\nInput Audio channels: %d", enc->channels);
2686 audio_channels = enc->channels;
2687 audio_sample_rate = enc->sample_rate;
2688 if(audio_disable)
2689 ic->streams[i]->discard= AVDISCARD_ALL;
2690 break;
2691 case CODEC_TYPE_VIDEO:
2692 for(j=0; j<opt_name_count; j++){
2693 const AVOption *opt;
2694 double d= av_get_double(avctx_opts[CODEC_TYPE_VIDEO], opt_names[j], &opt);
2695 if(!isnan(d) && (opt->flags&AV_OPT_FLAG_VIDEO_PARAM) && (opt->flags&AV_OPT_FLAG_DECODING_PARAM))
2696 av_set_double(enc, opt_names[j], d);
2697 }
2698 frame_height = enc->height;
2699 frame_width = enc->width;
2700 frame_aspect_ratio = av_q2d(enc->sample_aspect_ratio) * enc->width / enc->height;
2701 frame_pix_fmt = enc->pix_fmt;
2702 rfps = ic->streams[i]->r_frame_rate.num;
2703 rfps_base = ic->streams[i]->r_frame_rate.den;
2704 if(enc->lowres) enc->flags |= CODEC_FLAG_EMU_EDGE;
2705 if(me_threshold)
2706 enc->debug |= FF_DEBUG_MV;
2707
2708 if (enc->time_base.den != rfps || enc->time_base.num != rfps_base) {
2709
2710 if (verbose >= 0)
2711 fprintf(stderr,"\nSeems stream %d codec frame rate differs from container frame rate: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
2712 i, (float)enc->time_base.den / enc->time_base.num, enc->time_base.den, enc->time_base.num,
2713
2714 (float)rfps / rfps_base, rfps, rfps_base);
2715 }
2716 /* update the current frame rate to match the stream frame rate */
2717 frame_rate.num = rfps;
2718 frame_rate.den = rfps_base;
2719
2720 enc->rate_emu = rate_emu;
2721 if(video_disable)
2722 ic->streams[i]->discard= AVDISCARD_ALL;
2723 else if(video_discard)
2724 ic->streams[i]->discard= video_discard;
2725 break;
2726 case CODEC_TYPE_DATA:
2727 break;
2728 case CODEC_TYPE_SUBTITLE:
2729 if(subtitle_disable)
2730 ic->streams[i]->discard = AVDISCARD_ALL;
2731 break;
2732 case CODEC_TYPE_UNKNOWN:
2733 break;
2734 default:
2735 abort();
2736 }
2737 }
2738
2739 input_files[nb_input_files] = ic;
2740 input_files_ts_offset[nb_input_files] = input_ts_offset - (copy_ts ? 0 : timestamp);
2741 /* dump the file content */
2742 if (verbose >= 0)
2743 dump_format(ic, nb_input_files, filename, 0);
2744
2745 nb_input_files++;
2746 file_iformat = NULL;
2747 file_oformat = NULL;
2748
2749 video_channel = 0;
2750
2751 rate_emu = 0;
2752 }
2753
2754 static void check_audio_video_sub_inputs(int *has_video_ptr, int *has_audio_ptr,
2755 int *has_subtitle_ptr)
2756 {
2757 int has_video, has_audio, has_subtitle, i, j;
2758 AVFormatContext *ic;
2759
2760 has_video = 0;
2761 has_audio = 0;
2762 has_subtitle = 0;
2763 for(j=0;j<nb_input_files;j++) {
2764 ic = input_files[j];
2765 for(i=0;i<ic->nb_streams;i++) {
2766 AVCodecContext *enc = ic->streams[i]->codec;
2767 switch(enc->codec_type) {
2768 case CODEC_TYPE_AUDIO:
2769 has_audio = 1;
2770 break;
2771 case CODEC_TYPE_VIDEO:
2772 has_video = 1;
2773 break;
2774 case CODEC_TYPE_SUBTITLE:
2775 has_subtitle = 1;
2776 break;
2777 case CODEC_TYPE_DATA:
2778 case CODEC_TYPE_UNKNOWN:
2779 break;
2780 default:
2781 abort();
2782 }
2783 }
2784 }
2785 *has_video_ptr = has_video;
2786 *has_audio_ptr = has_audio;
2787 *has_subtitle_ptr = has_subtitle;
2788 }
2789
2790 static void new_video_stream(AVFormatContext *oc)
2791 {
2792 AVStream *st;
2793 AVCodecContext *video_enc;
2794 int codec_id;
2795
2796 st = av_new_stream(oc, oc->nb_streams);
2797 if (!st) {
2798 fprintf(stderr, "Could not alloc stream\n");
2799 exit(1);
2800 }
2801 avcodec_get_context_defaults2(st->codec, CODEC_TYPE_VIDEO);
2802 bitstream_filters[nb_output_files][oc->nb_streams - 1]= video_bitstream_filters;
2803 video_bitstream_filters= NULL;
2804
2805 if(thread_count>1)
2806 avcodec_thread_init(st->codec, thread_count);
2807
2808 video_enc = st->codec;
2809
2810 if(video_codec_tag)
2811 video_enc->codec_tag= video_codec_tag;
2812
2813 if( (video_global_header&1)
2814 || (video_global_header==0 && (oc->oformat->flags & AVFMT_GLOBALHEADER))){
2815 video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
2816 avctx_opts[CODEC_TYPE_VIDEO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
2817 }
2818 if(video_global_header&2){
2819 video_enc->flags2 |= CODEC_FLAG2_LOCAL_HEADER;
2820 avctx_opts[CODEC_TYPE_VIDEO]->flags2|= CODEC_FLAG2_LOCAL_HEADER;
2821 }
2822
2823 if (video_stream_copy) {
2824 st->stream_copy = 1;
2825 video_enc->codec_type = CODEC_TYPE_VIDEO;
2826 } else {
2827 char *p;
2828 int i;
2829 AVCodec *codec;
2830
2831 codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, CODEC_TYPE_VIDEO);
2832 if (video_codec_name)
2833 codec_id = find_codec_or_die(video_codec_name, CODEC_TYPE_VIDEO, 1);
2834
2835 video_enc->codec_id = codec_id;
2836 codec = avcodec_find_encoder(codec_id);
2837
2838 for(i=0; i<opt_name_count; i++){
2839 const AVOption *opt;
2840 double d= av_get_double(avctx_opts[CODEC_TYPE_VIDEO], opt_names[i], &opt);
2841 if(!isnan(d) && (opt->flags&AV_OPT_FLAG_VIDEO_PARAM) && (opt->flags&AV_OPT_FLAG_ENCODING_PARAM))
2842 av_set_double(video_enc, opt_names[i], d);
2843 }
2844
2845 video_enc->time_base.den = frame_rate.num;
2846 video_enc->time_base.num = frame_rate.den;
2847 if(codec && codec->supported_framerates){
2848 const AVRational *p= codec->supported_framerates;
2849 AVRational req= (AVRational){frame_rate.num, frame_rate.den};
2850 const AVRational *best=NULL;
2851 AVRational best_error= (AVRational){INT_MAX, 1};
2852 for(; p->den!=0; p++){
2853 AVRational error= av_sub_q(req, *p);
2854 if(error.num <0) error.num *= -1;
2855 if(av_cmp_q(error, best_error) < 0){
2856 best_error= error;
2857 best= p;
2858 }
2859 }
2860 video_enc->time_base.den= best->num;
2861 video_enc->time_base.num= best->den;
2862 }
2863
2864 video_enc->width = frame_width + frame_padright + frame_padleft;
2865 video_enc->height = frame_height + frame_padtop + frame_padbottom;
2866 video_enc->sample_aspect_ratio = av_d2q(frame_aspect_ratio*video_enc->height/video_enc->width, 255);
2867 video_enc->pix_fmt = frame_pix_fmt;
2868
2869 if(codec && codec->pix_fmts){
2870 const enum PixelFormat *p= codec->pix_fmts;
2871 for(; *p!=-1; p++){
2872 if(*p == video_enc->pix_fmt)
2873 break;
2874 }
2875 if(*p == -1)
2876 video_enc->pix_fmt = codec->pix_fmts[0];
2877 }
2878
2879 if (intra_only)
2880 video_enc->gop_size = 0;
2881 if (video_qscale || same_quality) {
2882 video_enc->flags |= CODEC_FLAG_QSCALE;
2883 video_enc->global_quality=
2884 st->quality = FF_QP2LAMBDA * video_qscale;
2885 }
2886
2887 if(intra_matrix)
2888 video_enc->intra_matrix = intra_matrix;
2889 if(inter_matrix)
2890 video_enc->inter_matrix = inter_matrix;
2891
2892 video_enc->max_qdiff = video_qdiff;
2893 video_enc->rc_eq = video_rc_eq;
2894 video_enc->thread_count = thread_count;
2895 p= video_rc_override_string;
2896 for(i=0; p; i++){
2897 int start, end, q;
2898 int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
2899 if(e!=3){
2900 fprintf(stderr, "error parsing rc_override\n");
2901 exit(1);
2902 }
2903 video_enc->rc_override=
2904 av_realloc(video_enc->rc_override,
2905 sizeof(RcOverride)*(i+1));
2906 video_enc->rc_override[i].start_frame= start;
2907 video_enc->rc_override[i].end_frame = end;
2908 if(q>0){
2909 video_enc->rc_override[i].qscale= q;
2910 video_enc->rc_override[i].quality_factor= 1.0;
2911 }
2912 else{
2913 video_enc->rc_override[i].qscale= 0;
2914 video_enc->rc_override[i].quality_factor= -q/100.0;
2915 }
2916 p= strchr(p, '/');
2917 if(p) p++;
2918 }
2919 video_enc->rc_override_count=i;
2920 if (!video_enc->rc_initial_buffer_occupancy)
2921 video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
2922 video_enc->me_threshold= me_threshold;
2923 video_enc->intra_dc_precision= intra_dc_precision - 8;
2924 video_enc->strict_std_compliance = strict;
2925
2926 if (do_psnr)
2927 video_enc->flags|= CODEC_FLAG_PSNR;
2928
2929 /* two pass mode */
2930 if (do_pass) {
2931 if (do_pass == 1) {
2932 video_enc->flags |= CODEC_FLAG_PASS1;
2933 } else {
2934 video_enc->flags |= CODEC_FLAG_PASS2;
2935 }
2936 }
2937 }
2938
2939 /* reset some key parameters */
2940 video_disable = 0;
2941 av_freep(&video_codec_name);
2942 video_stream_copy = 0;
2943 }
2944
2945 static void new_audio_stream(AVFormatContext *oc)
2946 {
2947 AVStream *st;
2948 AVCodecContext *audio_enc;
2949 int codec_id, i;
2950
2951 st = av_new_stream(oc, oc->nb_streams);
2952 if (!st) {
2953 fprintf(stderr, "Could not alloc stream\n");
2954 exit(1);
2955 }
2956 avcodec_get_context_defaults2(st->codec, CODEC_TYPE_AUDIO);
2957
2958 bitstream_filters[nb_output_files][oc->nb_streams - 1]= audio_bitstream_filters;
2959 audio_bitstream_filters= NULL;
2960
2961 if(thread_count>1)
2962 avcodec_thread_init(st->codec, thread_count);
2963
2964 audio_enc = st->codec;
2965 audio_enc->codec_type = CODEC_TYPE_AUDIO;
2966 audio_enc->strict_std_compliance = strict;
2967
2968 if(audio_codec_tag)
2969 audio_enc->codec_tag= audio_codec_tag;
2970
2971 if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
2972 audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
2973 avctx_opts[CODEC_TYPE_AUDIO]->flags|= CODEC_FLAG_GLOBAL_HEADER;
2974 }
2975 if (audio_stream_copy) {
2976 st->stream_copy = 1;
2977 audio_enc->channels = audio_channels;
2978 } else {
2979 codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, CODEC_TYPE_AUDIO);
2980
2981 for(i=0; i<opt_name_count; i++){
2982 const AVOption *opt;
2983 double d= av_get_double(avctx_opts[CODEC_TYPE_AUDIO], opt_names[i], &opt);
2984 if(!isnan(d) && (opt->flags&AV_OPT_FLAG_AUDIO_PARAM) && (opt->flags&AV_OPT_FLAG_ENCODING_PARAM))
2985 av_set_double(audio_enc, opt_names[i], d);
2986 }
2987
2988 if (audio_codec_name)
2989 codec_id = find_codec_or_die(audio_codec_name, CODEC_TYPE_AUDIO, 1);
2990 audio_enc->codec_id = codec_id;
2991
2992 if (audio_qscale > QSCALE_NONE) {
2993 audio_enc->flags |= CODEC_FLAG_QSCALE;
2994 audio_enc->global_quality = st->quality = FF_QP2LAMBDA * audio_qscale;
2995 }
2996 audio_enc->thread_count = thread_count;
2997 audio_enc->channels = audio_channels;
2998 }
2999 audio_enc->sample_rate = audio_sample_rate;
3000 audio_enc->time_base= (AVRational){1, audio_sample_rate};
3001 if (audio_language) {
3002 av_strlcpy(st->language, audio_language, sizeof(st->language));
3003 av_free(audio_language);
3004 audio_language = NULL;
3005 }
3006
3007 /* reset some key parameters */
3008 audio_disable = 0;
3009 av_freep(&audio_codec_name);
3010 audio_stream_copy = 0;
3011 }
3012
3013 static void new_subtitle_stream(AVFormatContext *oc)
3014 {
3015 AVStream *st;
3016 AVCodecContext *subtitle_enc;
3017 int i;
3018
3019 st = av_new_stream(oc, oc->nb_streams);
3020 if (!st) {
3021 fprintf(stderr, "Could not alloc stream\n");
3022 exit(1);
3023 }
3024 avcodec_get_context_defaults2(st->codec, CODEC_TYPE_SUBTITLE);
3025
3026 subtitle_enc = st->codec;
3027 subtitle_enc->codec_type = CODEC_TYPE_SUBTITLE;
3028 if (subtitle_stream_copy) {
3029 st->stream_copy = 1;
3030 } else {
3031 for(i=0; i<opt_name_count; i++){
3032 const AVOption *opt;
3033 double d= av_get_double(avctx_opts[CODEC_TYPE_SUBTITLE], opt_names[i], &opt);
3034 if(!isnan(d) && (opt->flags&AV_OPT_FLAG_SUBTITLE_PARAM) && (opt->flags&AV_OPT_FLAG_ENCODING_PARAM))
3035 av_set_double(subtitle_enc, opt_names[i], d);
3036 }
3037 subtitle_enc->codec_id = find_codec_or_die(subtitle_codec_name, CODEC_TYPE_SUBTITLE, 1);
3038 }
3039
3040 if (subtitle_language) {
3041 av_strlcpy(st->language, subtitle_language, sizeof(st->language));
3042 av_free(subtitle_language);
3043 subtitle_language = NULL;
3044 }
3045
3046 subtitle_disable = 0;
3047 av_freep(&subtitle_codec_name);
3048 subtitle_stream_copy = 0;
3049 }
3050
3051 static void opt_new_audio_stream(void)
3052 {
3053 AVFormatContext *oc;
3054 if (nb_output_files <= 0) {
3055 fprintf(stderr, "At least one output file must be specified\n");
3056 exit(1);
3057 }
3058 oc = output_files[nb_output_files - 1];
3059 new_audio_stream(oc);
3060 }
3061
3062 static void opt_new_video_stream(void)
3063 {
3064 AVFormatContext *oc;
3065 if (nb_output_files <= 0) {
3066 fprintf(stderr, "At least one output file must be specified\n");
3067 exit(1);
3068 }
3069 oc = output_files[nb_output_files - 1];
3070 new_video_stream(oc);
3071 }
3072
3073 static void opt_new_subtitle_stream(void)
3074 {
3075 AVFormatContext *oc;
3076 if (nb_output_files <= 0) {
3077 fprintf(stderr, "At least one output file must be specified\n");
3078 exit(1);
3079 }
3080 oc = output_files[nb_output_files - 1];
3081 new_subtitle_stream(oc);
3082 }
3083
3084 static void opt_output_file(const char *filename)
3085 {
3086 AVFormatContext *oc;
3087 int use_video, use_audio, use_subtitle;
3088 int input_has_video, input_has_audio, input_has_subtitle, i;
3089 AVFormatParameters params, *ap = &params;
3090
3091 if (!strcmp(filename, "-"))
3092 filename = "pipe:";
3093
3094 oc = av_alloc_format_context();
3095
3096 if (!file_oformat) {
3097 file_oformat = guess_format(NULL, filename, NULL);
3098 if (!file_oformat) {
3099 fprintf(stderr, "Unable to find a suitable output format for '%s'\n",
3100 filename);
3101 exit(1);
3102 }
3103 }
3104
3105 oc->oformat = file_oformat;
3106 av_strlcpy(oc->filename, filename, sizeof(oc->filename));
3107
3108 if (!strcmp(file_oformat->name, "ffm") &&
3109 av_strstart(filename, "http:", NULL)) {
3110 /* special case for files sent to ffserver: we get the stream
3111 parameters from ffserver */
3112 if (read_ffserver_streams(oc, filename) < 0) {
3113 fprintf(stderr, "Could not read stream parameters from '%s'\n", filename);
3114 exit(1);
3115 }
3116 } else {
3117 use_video = file_oformat->video_codec != CODEC_ID_NONE || video_stream_copy || video_codec_name;
3118 use_audio = file_oformat->audio_codec != CODEC_ID_NONE || audio_stream_copy || audio_codec_name;
3119 use_subtitle = file_oformat->subtitle_codec != CODEC_ID_NONE || subtitle_stream_copy || subtitle_codec_name;
3120
3121 /* disable if no corresponding type found and at least one
3122 input file */
3123 if (nb_input_files > 0) {
3124 check_audio_video_sub_inputs(&input_has_video, &input_has_audio,
3125 &input_has_subtitle);
3126 if (!input_has_video)
3127 use_video = 0;
3128 if (!input_has_audio)
3129 use_audio = 0;
3130 if (!input_has_subtitle)
3131 use_subtitle = 0;
3132 }
3133
3134 /* manual disable */
3135 if (audio_disable) {
3136 use_audio = 0;
3137 }
3138 if (video_disable) {
3139 use_video = 0;
3140 }
3141 if (subtitle_disable) {
3142 use_subtitle = 0;
3143 }
3144
3145 if (use_video) {
3146 new_video_stream(oc);
3147 }
3148
3149 if (use_audio) {
3150 new_audio_stream(oc);
3151 }
3152
3153 if (use_subtitle) {
3154 new_subtitle_stream(oc);
3155 }
3156
3157 oc->timestamp = rec_timestamp;
3158
3159 if (str_title)
3160 av_strlcpy(oc->title, str_title, sizeof(oc->title));
3161 if (str_author)
3162 av_strlcpy(oc->author, str_author, sizeof(oc->author));
3163 if (str_copyright)
3164 av_strlcpy(oc->copyright, str_copyright, sizeof(oc->copyright));
3165 if (str_comment)
3166 av_strlcpy(oc->comment, str_comment, sizeof(oc->comment));
3167 if (str_album)
3168 av_strlcpy(oc->album, str_album, sizeof(oc->album));
3169 }
3170
3171 output_files[nb_output_files++] = oc;
3172
3173 /* check filename in case of an image number is expected */
3174 if (oc->oformat->flags & AVFMT_NEEDNUMBER) {
3175 if (!av_filename_number_test(oc->filename)) {
3176 print_error(oc->filename, AVERROR_NUMEXPECTED);
3177 exit(1);
3178 }
3179 }
3180
3181 if (!(oc->oformat->flags & AVFMT_NOFILE)) {
3182 /* test if it already exists to avoid loosing precious files */
3183 if (!file_overwrite &&
3184 (strchr(filename, ':') == NULL ||
3185 av_strstart(filename, "file:", NULL))) {
3186 if (url_exist(filename)) {
3187 int c;
3188
3189 if ( !using_stdin ) {
3190 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3191 fflush(stderr);
3192 c = getchar();
3193 if (toupper(c) != 'Y') {
3194 fprintf(stderr, "Not overwriting - exiting\n");
3195 exit(1);
3196 }
3197 }
3198 else {
3199 fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
3200 exit(1);
3201 }
3202 }
3203 }
3204
3205 /* open the file */
3206 if (url_fopen(&oc->pb, filename, URL_WRONLY) < 0) {
3207 fprintf(stderr, "Could not open '%s'\n", filename);
3208 exit(1);
3209 }
3210 }
3211
3212 memset(ap, 0, sizeof(*ap));
3213 if (av_set_parameters(oc, ap) < 0) {
3214 fprintf(stderr, "%s: Invalid encoding parameters\n",
3215 oc->filename);
3216 exit(1);
3217 }
3218
3219 oc->preload= (int)(mux_preload*AV_TIME_BASE);
3220 oc->max_delay= (int)(mux_max_delay*AV_TIME_BASE);
3221 oc->loop_output = loop_output;
3222
3223 for(i=0; i<opt_name_count; i++){
3224 const AVOption *opt;
3225 double d = av_get_double(avformat_opts, opt_names[i], &opt);
3226 if(!isnan(d) && (opt->flags&AV_OPT_FLAG_ENCODING_PARAM))
3227 av_set_double(oc, opt_names[i], d);
3228 }
3229
3230 /* reset some options */
3231 file_oformat = NULL;
3232 file_iformat = NULL;
3233 }
3234
3235 /* s