c41b279b2a89dead877ee96bc9ab5fcdc279f2a3
[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 #define HAVE_AV_CONFIG_H
22 #include <limits.h>
23 #include "avformat.h"
24 #include "swscale.h"
25 #include "framehook.h"
26 #include "dsputil.h"
27 #include "opt.h"
28 #include "fifo.h"
29
30 #ifndef __MINGW32__
31 #include <unistd.h>
32 #include <fcntl.h>
33 #include <sys/ioctl.h>
34 #include <sys/time.h>
35 #include <termios.h>
36 #include <sys/resource.h>
37 #include <signal.h>
38 #endif
39 #ifdef CONFIG_OS2
40 #include <sys/types.h>
41 #include <sys/select.h>
42 #include <stdlib.h>
43 #endif
44 #undef time //needed because HAVE_AV_CONFIG_H is defined on top
45 #include <time.h>
46
47 #include "version.h"
48 #include "cmdutils.h"
49
50 #undef NDEBUG
51 #include <assert.h>
52
53 #if !defined(INFINITY) && defined(HUGE_VAL)
54 #define INFINITY HUGE_VAL
55 #endif
56
57 /* select an input stream for an output stream */
58 typedef struct AVStreamMap {
59 int file_index;
60 int stream_index;
61 int sync_file_index;
62 int sync_stream_index;
63 } AVStreamMap;
64
65 /** select an input file for an output file */
66 typedef struct AVMetaDataMap {
67 int out_file;
68 int in_file;
69 } AVMetaDataMap;
70
71 extern const OptionDef options[];
72
73 static void show_help(void);
74 static void show_license(void);
75 static int opt_default(const char *opt, const char *arg);
76
77 #define MAX_FILES 20
78
79 static AVFormatContext *input_files[MAX_FILES];
80 static int64_t input_files_ts_offset[MAX_FILES];
81 static int nb_input_files = 0;
82
83 static AVFormatContext *output_files[MAX_FILES];
84 static int nb_output_files = 0;
85
86 static AVStreamMap stream_maps[MAX_FILES];
87 static int nb_stream_maps;
88
89 static AVMetaDataMap meta_data_maps[MAX_FILES];
90 static int nb_meta_data_maps;
91
92 static AVInputFormat *file_iformat;
93 static AVOutputFormat *file_oformat;
94 static int frame_width = 0;
95 static int frame_height = 0;
96 static float frame_aspect_ratio = 0;
97 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
98 static int frame_padtop = 0;
99 static int frame_padbottom = 0;
100 static int frame_padleft = 0;
101 static int frame_padright = 0;
102 static int padcolor[3] = {16,128,128}; /* default to black */
103 static int frame_topBand = 0;
104 static int frame_bottomBand = 0;
105 static int frame_leftBand = 0;
106 static int frame_rightBand = 0;
107 static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
108 static int frame_rate = 25;
109 static int frame_rate_base = 1;
110 static float video_qscale = 0;
111 static int video_qdiff = 3;
112 static uint16_t *intra_matrix = NULL;
113 static uint16_t *inter_matrix = NULL;
114 #if 0 //experimental, (can be removed)
115 static float video_rc_qsquish=1.0;
116 static float video_rc_qmod_amp=0;
117 static int video_rc_qmod_freq=0;
118 #endif
119 static char *video_rc_override_string=NULL;
120 static char *video_rc_eq="tex^qComp";
121 static int me_method = ME_EPZS;
122 static int video_disable = 0;
123 static int video_discard = 0;
124 static int video_codec_id = CODEC_ID_NONE;
125 static int video_codec_tag = 0;
126 static int same_quality = 0;
127 static int do_deinterlace = 0;
128 static int packet_size = 0;
129 static int strict = 0;
130 static int top_field_first = -1;
131 static int me_threshold = 0;
132 static int intra_dc_precision = 8;
133 static int loop_input = 0;
134 static int loop_output = AVFMT_NOOUTPUTLOOP;
135 static int qp_hist = 0;
136
137 static int intra_only = 0;
138 static int audio_sample_rate = 44100;
139 static int audio_bit_rate = 64000;
140 #define QSCALE_NONE -99999
141 static float audio_qscale = QSCALE_NONE;
142 static int audio_disable = 0;
143 static int audio_channels = 1;
144 static int audio_codec_id = CODEC_ID_NONE;
145 static int audio_codec_tag = 0;
146 static char *audio_language = NULL;
147
148 static int subtitle_codec_id = CODEC_ID_NONE;
149 static char *subtitle_language = NULL;
150
151 static float mux_preload= 0.5;
152 static float mux_max_delay= 0.7;
153
154 static int64_t recording_time = 0;
155 static int64_t start_time = 0;
156 static int64_t rec_timestamp = 0;
157 static int64_t input_ts_offset = 0;
158 static int file_overwrite = 0;
159 static char *str_title = NULL;
160 static char *str_author = NULL;
161 static char *str_copyright = NULL;
162 static char *str_comment = NULL;
163 static char *str_album = NULL;
164 static int do_benchmark = 0;
165 static int do_hex_dump = 0;
166 static int do_pkt_dump = 0;
167 static int do_psnr = 0;
168 static int do_vstats = 0;
169 static int do_pass = 0;
170 static char *pass_logfilename = NULL;
171 static int audio_stream_copy = 0;
172 static int video_stream_copy = 0;
173 static int subtitle_stream_copy = 0;
174 static int video_sync_method= 1;
175 static int audio_sync_method= 0;
176 static int copy_ts= 0;
177 static int opt_shortest = 0; //
178 static int video_global_header = 0;
179
180 static int rate_emu = 0;
181
182 #ifdef CONFIG_BKTR
183 static const char *video_grab_format = "bktr";
184 #else
185 #ifdef CONFIG_VIDEO4LINUX2
186 static const char *video_grab_format = "video4linux2";
187 #else
188 static const char *video_grab_format = "video4linux";
189 #endif
190 #endif
191 static char *video_device = NULL;
192 static char *grab_device = NULL;
193 static int video_channel = 0;
194 static char *video_standard = "ntsc";
195
196 static const char *audio_grab_format = "audio_device";
197 static char *audio_device = NULL;
198 static int audio_volume = 256;
199
200 static int using_stdin = 0;
201 static int using_vhook = 0;
202 static int verbose = 1;
203 static int thread_count= 1;
204 static int q_pressed = 0;
205 static int64_t video_size = 0;
206 static int64_t audio_size = 0;
207 static int64_t extra_size = 0;
208 static int nb_frames_dup = 0;
209 static int nb_frames_drop = 0;
210 static int input_sync;
211 static int limit_filesize = 0; //
212
213 static int pgmyuv_compatibility_hack=0;
214 static int dts_delta_threshold = 10;
215
216 static int sws_flags = SWS_BICUBIC;
217
218 const char **opt_names=NULL;
219 int opt_name_count=0;
220 AVCodecContext *avctx_opts;
221 AVFormatContext *avformat_opts;
222
223 static AVBitStreamFilterContext *video_bitstream_filters=NULL;
224 static AVBitStreamFilterContext *audio_bitstream_filters=NULL;
225 static AVBitStreamFilterContext *bitstream_filters[MAX_FILES][MAX_STREAMS];
226
227 #define DEFAULT_PASS_LOGFILENAME "ffmpeg2pass"
228
229 struct AVInputStream;
230
231 typedef struct AVOutputStream {
232 int file_index; /* file index */
233 int index; /* stream index in the output file */
234 int source_index; /* AVInputStream index */
235 AVStream *st; /* stream in the output file */
236 int encoding_needed; /* true if encoding needed for this stream */
237 int frame_number;
238 /* input pts and corresponding output pts
239 for A/V sync */
240 //double sync_ipts; /* dts from the AVPacket of the demuxer in second units */
241 struct AVInputStream *sync_ist; /* input stream to sync against */
242 int64_t sync_opts; /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
243 /* video only */
244 int video_resample;
245 AVFrame pict_tmp; /* temporary image for resampling */
246 struct SwsContext *img_resample_ctx; /* for image resampling */
247 int resample_height;
248
249 int video_crop;
250 int topBand; /* cropping area sizes */
251 int leftBand;
252
253 int video_pad;
254 int padtop; /* padding area sizes */
255 int padbottom;
256 int padleft;
257 int padright;
258
259 /* audio only */
260 int audio_resample;
261 ReSampleContext *resample; /* for audio resampling */
262 AVFifoBuffer fifo; /* for compression: one audio fifo per codec */
263 FILE *logfile;
264 } AVOutputStream;
265
266 typedef struct AVInputStream {
267 int file_index;
268 int index;
269 AVStream *st;
270 int discard; /* true if stream data should be discarded */
271 int decoding_needed; /* true if the packets must be decoded in 'raw_fifo' */
272 int64_t sample_index; /* current sample */
273
274 int64_t start; /* time when read started */
275 unsigned long frame; /* current frame */
276 int64_t next_pts; /* synthetic pts for cases where pkt.pts
277 is not defined */
278 int64_t pts; /* current pts */
279 int is_start; /* is 1 at the start and after a discontinuity */
280 } AVInputStream;
281
282 typedef struct AVInputFile {
283 int eof_reached; /* true if eof reached */
284 int ist_index; /* index of first stream in ist_table */
285 int buffer_size; /* current total buffer size */
286 int buffer_size_max; /* buffer size at which we consider we can stop
287 buffering */
288 int nb_streams; /* nb streams we are aware of */
289 } AVInputFile;
290
291 #ifndef __MINGW32__
292
293 /* init terminal so that we can grab keys */
294 static struct termios oldtty;
295
296 static void term_exit(void)
297 {
298 tcsetattr (0, TCSANOW, &oldtty);
299 }
300
301 static volatile sig_atomic_t received_sigterm = 0;
302
303 static void
304 sigterm_handler(int sig)
305 {
306 received_sigterm = sig;
307 term_exit();
308 }
309
310 static void term_init(void)
311 {
312 struct termios tty;
313
314 tcgetattr (0, &tty);
315 oldtty = tty;
316
317 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
318 |INLCR|IGNCR|ICRNL|IXON);
319 tty.c_oflag |= OPOST;
320 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
321 tty.c_cflag &= ~(CSIZE|PARENB);
322 tty.c_cflag |= CS8;
323 tty.c_cc[VMIN] = 1;
324 tty.c_cc[VTIME] = 0;
325
326 tcsetattr (0, TCSANOW, &tty);
327
328 signal(SIGINT , sigterm_handler); /* Interrupt (ANSI). */
329 signal(SIGQUIT, sigterm_handler); /* Quit (POSIX). */
330 signal(SIGTERM, sigterm_handler); /* Termination (ANSI). */
331 /*
332 register a function to be called at normal program termination
333 */
334 atexit(term_exit);
335 #ifdef CONFIG_BEOS_NETSERVER
336 fcntl(0, F_SETFL, fcntl(0, F_GETFL) | O_NONBLOCK);
337 #endif
338 }
339
340 /* read a key without blocking */
341 static int read_key(void)
342 {
343 int n = 1;
344 unsigned char ch;
345 #ifndef CONFIG_BEOS_NETSERVER
346 struct timeval tv;
347 fd_set rfds;
348
349 FD_ZERO(&rfds);
350 FD_SET(0, &rfds);
351 tv.tv_sec = 0;
352 tv.tv_usec = 0;
353 n = select(1, &rfds, NULL, NULL, &tv);
354 #endif
355 if (n > 0) {
356 n = read(0, &ch, 1);
357 if (n == 1)
358 return ch;
359
360 return n;
361 }
362 return -1;
363 }
364
365 static int decode_interrupt_cb(void)
366 {
367 return q_pressed || (q_pressed = read_key() == 'q');
368 }
369
370 #else
371
372 static volatile int received_sigterm = 0;
373
374 /* no interactive support */
375 static void term_exit(void)
376 {
377 }
378
379 static void term_init(void)
380 {
381 }
382
383 static int read_key(void)
384 {
385 return 0;
386 }
387
388 #endif
389
390 static int read_ffserver_streams(AVFormatContext *s, const char *filename)
391 {
392 int i, err;
393 AVFormatContext *ic;
394
395 err = av_open_input_file(&ic, filename, NULL, FFM_PACKET_SIZE, NULL);
396 if (err < 0)
397 return err;
398 /* copy stream format */
399 s->nb_streams = ic->nb_streams;
400 for(i=0;i<ic->nb_streams;i++) {
401 AVStream *st;
402
403 // FIXME: a more elegant solution is needed
404 st = av_mallocz(sizeof(AVStream));
405 memcpy(st, ic->streams[i], sizeof(AVStream));
406 st->codec = avcodec_alloc_context();
407 memcpy(st->codec, ic->streams[i]->codec, sizeof(AVCodecContext));
408 s->streams[i] = st;
409 }
410
411 av_close_input_file(ic);
412 return 0;
413 }
414
415 static double
416 get_sync_ipts(const AVOutputStream *ost)
417 {
418 const AVInputStream *ist = ost->sync_ist;
419 return (double)(ist->pts + input_files_ts_offset[ist->file_index] - start_time)/AV_TIME_BASE;
420 }
421
422 static void write_frame(AVFormatContext *s, AVPacket *pkt, AVCodecContext *avctx, AVBitStreamFilterContext *bsfc){
423 while(bsfc){
424 AVPacket new_pkt= *pkt;
425 int a= av_bitstream_filter_filter(bsfc, avctx, NULL,
426 &new_pkt.data, &new_pkt.size,
427 pkt->data, pkt->size,
428 pkt->flags & PKT_FLAG_KEY);
429 if(a){
430 av_free_packet(pkt);
431 new_pkt.destruct= av_destruct_packet;
432 }
433 *pkt= new_pkt;
434
435 bsfc= bsfc->next;
436 }
437
438 av_interleaved_write_frame(s, pkt);
439 }
440
441 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
442
443 static void do_audio_out(AVFormatContext *s,
444 AVOutputStream *ost,
445 AVInputStream *ist,
446 unsigned char *buf, int size)
447 {
448 uint8_t *buftmp;
449 static uint8_t *audio_buf = NULL;
450 static uint8_t *audio_out = NULL;
451 const int audio_out_size= 4*MAX_AUDIO_PACKET_SIZE;
452
453 int size_out, frame_bytes, ret;
454 AVCodecContext *enc= ost->st->codec;
455
456 /* SC: dynamic allocation of buffers */
457 if (!audio_buf)
458 audio_buf = av_malloc(2*MAX_AUDIO_PACKET_SIZE);
459 if (!audio_out)
460 audio_out = av_malloc(audio_out_size);
461 if (!audio_buf || !audio_out)
462 return; /* Should signal an error ! */
463
464 if(audio_sync_method){
465 double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
466 - av_fifo_size(&ost->fifo)/(ost->st->codec->channels * 2);
467 double idelta= delta*ist->st->codec->sample_rate / enc->sample_rate;
468 int byte_delta= ((int)idelta)*2*ist->st->codec->channels;
469
470 //FIXME resample delay
471 if(fabs(delta) > 50){
472 if(ist->is_start){
473 if(byte_delta < 0){
474 byte_delta= FFMAX(byte_delta, -size);
475 size += byte_delta;
476 buf -= byte_delta;
477 if(verbose > 2)
478 fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
479 if(!size)
480 return;
481 ist->is_start=0;
482 }else{
483 static uint8_t *input_tmp= NULL;
484 input_tmp= av_realloc(input_tmp, byte_delta + size);
485
486 if(byte_delta + size <= MAX_AUDIO_PACKET_SIZE)
487 ist->is_start=0;
488 else
489 byte_delta= MAX_AUDIO_PACKET_SIZE - size;
490
491 memset(input_tmp, 0, byte_delta);
492 memcpy(input_tmp + byte_delta, buf, size);
493 buf= input_tmp;
494 size += byte_delta;
495 if(verbose > 2)
496 fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
497 }
498 }else if(audio_sync_method>1){
499 int comp= clip(delta, -audio_sync_method, audio_sync_method);
500 assert(ost->audio_resample);
501 if(verbose > 2)
502 fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
503 // 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));
504 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
505 }
506 }
507 }else
508 ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
509 - av_fifo_size(&ost->fifo)/(ost->st->codec->channels * 2); //FIXME wrong
510
511 if (ost->audio_resample) {
512 buftmp = audio_buf;
513 size_out = audio_resample(ost->resample,
514 (short *)buftmp, (short *)buf,
515 size / (ist->st->codec->channels * 2));
516 size_out = size_out * enc->channels * 2;
517 } else {
518 buftmp = buf;
519 size_out = size;
520 }
521
522 /* now encode as many frames as possible */
523 if (enc->frame_size > 1) {
524 /* output resampled raw samples */
525 av_fifo_write(&ost->fifo, buftmp, size_out);
526
527 frame_bytes = enc->frame_size * 2 * enc->channels;
528
529 while (av_fifo_read(&ost->fifo, audio_buf, frame_bytes) == 0) {
530 AVPacket pkt;
531 av_init_packet(&pkt);
532
533 ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
534 (short *)audio_buf);
535 audio_size += ret;
536 pkt.stream_index= ost->index;
537 pkt.data= audio_out;
538 pkt.size= ret;
539 if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
540 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
541 pkt.flags |= PKT_FLAG_KEY;
542 write_frame(s, &pkt, ost->st->codec, bitstream_filters[ost->file_index][pkt.stream_index]);
543
544 ost->sync_opts += enc->frame_size;
545 }
546 } else {
547 AVPacket pkt;
548 av_init_packet(&pkt);
549
550 ost->sync_opts += size_out / (2 * enc->channels);
551
552 /* output a pcm frame */
553 /* XXX: change encoding codec API to avoid this ? */
554 switch(enc->codec->id) {
555 case CODEC_ID_PCM_S32LE:
556 case CODEC_ID_PCM_S32BE:
557 case CODEC_ID_PCM_U32LE:
558 case CODEC_ID_PCM_U32BE:
559 size_out = size_out << 1;
560 break;
561 case CODEC_ID_PCM_S24LE:
562 case CODEC_ID_PCM_S24BE:
563 case CODEC_ID_PCM_U24LE:
564 case CODEC_ID_PCM_U24BE:
565 case CODEC_ID_PCM_S24DAUD:
566 size_out = size_out / 2 * 3;
567 break;
568 case CODEC_ID_PCM_S16LE:
569 case CODEC_ID_PCM_S16BE:
570 case CODEC_ID_PCM_U16LE:
571 case CODEC_ID_PCM_U16BE:
572 break;
573 default:
574 size_out = size_out >> 1;
575 break;
576 }
577 ret = avcodec_encode_audio(enc, audio_out, size_out,
578 (short *)buftmp);
579 audio_size += ret;
580 pkt.stream_index= ost->index;
581 pkt.data= audio_out;
582 pkt.size= ret;
583 if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
584 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
585 pkt.flags |= PKT_FLAG_KEY;
586 write_frame(s, &pkt, ost->st->codec, bitstream_filters[ost->file_index][pkt.stream_index]);
587 }
588 }
589
590 static void pre_process_video_frame(AVInputStream *ist, AVPicture *picture, void **bufp)
591 {
592 AVCodecContext *dec;
593 AVPicture *picture2;
594 AVPicture picture_tmp;
595 uint8_t *buf = 0;
596
597 dec = ist->st->codec;
598
599 /* deinterlace : must be done before any resize */
600 if (do_deinterlace || using_vhook) {
601 int size;
602
603 /* create temporary picture */
604 size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
605 buf = av_malloc(size);
606 if (!buf)
607 return;
608
609 picture2 = &picture_tmp;
610 avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
611
612 if (do_deinterlace){
613 if(avpicture_deinterlace(picture2, picture,
614 dec->pix_fmt, dec->width, dec->height) < 0) {
615 /* if error, do not deinterlace */
616 av_free(buf);
617 buf = NULL;
618 picture2 = picture;
619 }
620 } else {
621 img_copy(picture2, picture, dec->pix_fmt, dec->width, dec->height);
622 }
623 } else {
624 picture2 = picture;
625 }
626
627 frame_hook_process(picture2, dec->pix_fmt, dec->width, dec->height);
628
629 if (picture != picture2)
630 *picture = *picture2;
631 *bufp = buf;
632 }
633
634 /* we begin to correct av delay at this threshold */
635 #define AV_DELAY_MAX 0.100
636
637 static void do_subtitle_out(AVFormatContext *s,
638 AVOutputStream *ost,
639 AVInputStream *ist,
640 AVSubtitle *sub,
641 int64_t pts)
642 {
643 static uint8_t *subtitle_out = NULL;
644 int subtitle_out_max_size = 65536;
645 int subtitle_out_size, nb, i;
646 AVCodecContext *enc;
647 AVPacket pkt;
648
649 if (pts == AV_NOPTS_VALUE) {
650 fprintf(stderr, "Subtitle packets must have a pts\n");
651 return;
652 }
653
654 enc = ost->st->codec;
655
656 if (!subtitle_out) {
657 subtitle_out = av_malloc(subtitle_out_max_size);
658 }
659
660 /* Note: DVB subtitle need one packet to draw them and one other
661 packet to clear them */
662 /* XXX: signal it in the codec context ? */
663 if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
664 nb = 2;
665 else
666 nb = 1;
667
668 for(i = 0; i < nb; i++) {
669 subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
670 subtitle_out_max_size, sub);
671
672 av_init_packet(&pkt);
673 pkt.stream_index = ost->index;
674 pkt.data = subtitle_out;
675 pkt.size = subtitle_out_size;
676 pkt.pts = av_rescale_q(av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q) + input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ost->st->time_base);
677 if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
678 /* XXX: the pts correction is handled here. Maybe handling
679 it in the codec would be better */
680 if (i == 0)
681 pkt.pts += 90 * sub->start_display_time;
682 else
683 pkt.pts += 90 * sub->end_display_time;
684 }
685 write_frame(s, &pkt, ost->st->codec, bitstream_filters[ost->file_index][pkt.stream_index]);
686 }
687 }
688
689 static int bit_buffer_size= 1024*256;
690 static uint8_t *bit_buffer= NULL;
691
692 static void do_video_out(AVFormatContext *s,
693 AVOutputStream *ost,
694 AVInputStream *ist,
695 AVFrame *in_picture,
696 int *frame_size)
697 {
698 int nb_frames, i, ret;
699 AVFrame *final_picture, *formatted_picture, *resampling_dst, *padding_src;
700 AVFrame picture_crop_temp, picture_pad_temp;
701 uint8_t *buf = NULL, *buf1 = NULL;
702 AVCodecContext *enc, *dec;
703
704 avcodec_get_frame_defaults(&picture_crop_temp);
705 avcodec_get_frame_defaults(&picture_pad_temp);
706
707 enc = ost->st->codec;
708 dec = ist->st->codec;
709
710 /* by default, we output a single frame */
711 nb_frames = 1;
712
713 *frame_size = 0;
714
715 if(video_sync_method){
716 double vdelta;
717 vdelta = get_sync_ipts(ost) / av_q2d(enc->time_base) - ost->sync_opts;
718 //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
719 if (vdelta < -1.1)
720 nb_frames = 0;
721 else if (vdelta > 1.1)
722 nb_frames = lrintf(vdelta);
723 //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);
724 if (nb_frames == 0){
725 ++nb_frames_drop;
726 if (verbose>2)
727 fprintf(stderr, "*** drop!\n");
728 }else if (nb_frames > 1) {
729 nb_frames_dup += nb_frames;
730 if (verbose>2)
731 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
732 }
733 }else
734 ost->sync_opts= lrintf(get_sync_ipts(ost) / av_q2d(enc->time_base));
735
736 nb_frames= FFMIN(nb_frames, max_frames[CODEC_TYPE_VIDEO] - ost->frame_number);
737 if (nb_frames <= 0)
738 return;
739
740 if (ost->video_crop) {
741 if (img_crop((AVPicture *)&picture_crop_temp, (AVPicture *)in_picture, dec->pix_fmt, ost->topBand, ost->leftBand) < 0) {
742 av_log(NULL, AV_LOG_ERROR, "error cropping picture\n");
743 goto the_end;
744 }
745 formatted_picture = &picture_crop_temp;
746 } else {
747 formatted_picture = in_picture;
748 }
749
750 final_picture = formatted_picture;
751 padding_src = formatted_picture;
752 resampling_dst = &ost->pict_tmp;
753 if (ost->video_pad) {
754 final_picture = &ost->pict_tmp;
755 if (ost->video_resample) {
756 if (img_crop((AVPicture *)&picture_pad_temp, (AVPicture *)final_picture, enc->pix_fmt, ost->padtop, ost->padleft) < 0) {
757 av_log(NULL, AV_LOG_ERROR, "error padding picture\n");
758 goto the_end;
759 }
760 resampling_dst = &picture_pad_temp;
761 }
762 }
763
764 if (ost->video_resample) {
765 padding_src = NULL;
766 final_picture = &ost->pict_tmp;
767 sws_scale(ost->img_resample_ctx, formatted_picture->data, formatted_picture->linesize,
768 0, ost->resample_height, resampling_dst->data, resampling_dst->linesize);
769 }
770
771 if (ost->video_pad) {
772 img_pad((AVPicture*)final_picture, (AVPicture *)padding_src,
773 enc->height, enc->width, enc->pix_fmt,
774 ost->padtop, ost->padbottom, ost->padleft, ost->padright, padcolor);
775 }
776
777 /* duplicates frame if needed */
778 for(i=0;i<nb_frames;i++) {
779 AVPacket pkt;
780 av_init_packet(&pkt);
781 pkt.stream_index= ost->index;
782
783 if (s->oformat->flags & AVFMT_RAWPICTURE) {
784 /* raw pictures are written as AVPicture structure to
785 avoid any copies. We support temorarily the older
786 method. */
787 AVFrame* old_frame = enc->coded_frame;
788 enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
789 pkt.data= (uint8_t *)final_picture;
790 pkt.size= sizeof(AVPicture);
791 if(dec->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
792 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
793 if(dec->coded_frame && dec->coded_frame->key_frame)
794 pkt.flags |= PKT_FLAG_KEY;
795
796 write_frame(s, &pkt, ost->st->codec, bitstream_filters[ost->file_index][pkt.stream_index]);
797 enc->coded_frame = old_frame;
798 } else {
799 AVFrame big_picture;
800
801 big_picture= *final_picture;
802 /* better than nothing: use input picture interlaced
803 settings */
804 big_picture.interlaced_frame = in_picture->interlaced_frame;
805 if(avctx_opts->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)){
806 if(top_field_first == -1)
807 big_picture.top_field_first = in_picture->top_field_first;
808 else
809 big_picture.top_field_first = top_field_first;
810 }
811
812 /* handles sameq here. This is not correct because it may
813 not be a global option */
814 if (same_quality) {
815 big_picture.quality = ist->st->quality;
816 }else
817 big_picture.quality = ost->st->quality;
818 if(!me_threshold)
819 big_picture.pict_type = 0;
820 // big_picture.pts = AV_NOPTS_VALUE;
821 big_picture.pts= ost->sync_opts;
822 // big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
823 //av_log(NULL, AV_LOG_DEBUG, "%"PRId64" -> encoder\n", ost->sync_opts);
824 ret = avcodec_encode_video(enc,
825 bit_buffer, bit_buffer_size,
826 &big_picture);
827 if (ret == -1) {
828 fprintf(stderr, "Video encoding failed\n");
829 exit(1);
830 }
831 //enc->frame_number = enc->real_pict_num;
832 if(ret>0){
833 pkt.data= bit_buffer;
834 pkt.size= ret;
835 if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
836 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
837 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %"PRId64"/%"PRId64"\n",
838 pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
839 pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
840
841 if(enc->coded_frame && enc->coded_frame->key_frame)
842 pkt.flags |= PKT_FLAG_KEY;
843 write_frame(s, &pkt, ost->st->codec, bitstream_filters[ost->file_index][pkt.stream_index]);
844 *frame_size = ret;
845 //fprintf(stderr,"\nFrame: %3d %3d size: %5d type: %d",
846 // enc->frame_number-1, enc->real_pict_num, ret,
847 // enc->pict_type);
848 /* if two pass, output log */
849 if (ost->logfile && enc->stats_out) {
850 fprintf(ost->logfile, "%s", enc->stats_out);
851 }
852 }
853 }
854 ost->sync_opts++;
855 ost->frame_number++;
856 }
857 the_end:
858 av_free(buf);
859 av_free(buf1);
860 }
861
862 static double psnr(double d){
863 if(d==0) return INFINITY;
864 return -10.0*log(d)/log(10.0);
865 }
866
867 static void do_video_stats(AVFormatContext *os, AVOutputStream *ost,
868 int frame_size)
869 {
870 static FILE *fvstats=NULL;
871 char filename[40];
872 time_t today2;
873 struct tm *today;
874 AVCodecContext *enc;
875 int frame_number;
876 int64_t ti;
877 double ti1, bitrate, avg_bitrate;
878
879 if (!fvstats) {
880 today2 = time(NULL);
881 today = localtime(&today2);
882 snprintf(filename, sizeof(filename), "vstats_%02d%02d%02d.log", today->tm_hour,
883 today->tm_min,
884 today->tm_sec);
885 fvstats = fopen(filename,"w");
886 if (!fvstats) {
887 perror("fopen");
888 exit(1);
889 }
890 }
891
892 ti = MAXINT64;
893 enc = ost->st->codec;
894 if (enc->codec_type == CODEC_TYPE_VIDEO) {
895 frame_number = ost->frame_number;
896 fprintf(fvstats, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
897 if (enc->flags&CODEC_FLAG_PSNR)
898 fprintf(fvstats, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
899
900 fprintf(fvstats,"f_size= %6d ", frame_size);
901 /* compute pts value */
902 ti1 = ost->sync_opts * av_q2d(enc->time_base);
903 if (ti1 < 0.01)
904 ti1 = 0.01;
905
906 bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
907 avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
908 fprintf(fvstats, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
909 (double)video_size / 1024, ti1, bitrate, avg_bitrate);
910 fprintf(fvstats,"type= %c\n", av_get_pict_type_char(enc->coded_frame->pict_type));
911 }
912 }
913
914 static void print_report(AVFormatContext **output_files,
915 AVOutputStream **ost_table, int nb_ostreams,
916 int is_last_report)
917 {
918 char buf[1024];
919 AVOutputStream *ost;
920 AVFormatContext *oc, *os;
921 int64_t total_size;
922 AVCodecContext *enc;
923 int frame_number, vid, i;
924 double bitrate, ti1, pts;
925 static int64_t last_time = -1;
926 static int qp_histogram[52];
927
928 if (!is_last_report) {
929 int64_t cur_time;
930 /* display the report every 0.5 seconds */
931 cur_time = av_gettime();
932 if (last_time == -1) {
933 last_time = cur_time;
934 return;
935 }
936 if ((cur_time - last_time) < 500000)
937 return;
938 last_time = cur_time;
939 }
940
941
942 oc = output_files[0];
943
944 total_size = url_ftell(&oc->pb);
945
946 buf[0] = '\0';
947 ti1 = 1e10;
948 vid = 0;
949 for(i=0;i<nb_ostreams;i++) {
950 ost = ost_table[i];
951 os = output_files[ost->file_index];
952 enc = ost->st->codec;
953 if (vid && enc->codec_type == CODEC_TYPE_VIDEO) {
954 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ",
955 enc->coded_frame->quality/(float)FF_QP2LAMBDA);
956 }
957 if (!vid && enc->codec_type == CODEC_TYPE_VIDEO) {
958 frame_number = ost->frame_number;
959 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d q=%3.1f ",
960 frame_number, enc->coded_frame ? enc->coded_frame->quality/(float)FF_QP2LAMBDA : -1);
961 if(is_last_report)
962 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
963 if(qp_hist && enc->coded_frame){
964 int j;
965 int qp= lrintf(enc->coded_frame->quality/(float)FF_QP2LAMBDA);
966 if(qp>=0 && qp<sizeof(qp_histogram)/sizeof(int))
967 qp_histogram[qp]++;
968 for(j=0; j<32; j++)
969 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
970 }
971 if (enc->flags&CODEC_FLAG_PSNR){
972 int j;
973 double error, error_sum=0;
974 double scale, scale_sum=0;
975 char type[3]= {'Y','U','V'};
976 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
977 for(j=0; j<3; j++){
978 if(is_last_report){
979 error= enc->error[j];
980 scale= enc->width*enc->height*255.0*255.0*frame_number;
981 }else{
982 error= enc->coded_frame->error[j];
983 scale= enc->width*enc->height*255.0*255.0;
984 }
985 if(j) scale/=4;
986 error_sum += error;
987 scale_sum += scale;
988 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
989 }
990 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
991 }
992 vid = 1;
993 }
994 /* compute min output value */
995 pts = (double)ost->st->pts.val * ost->st->time_base.num / ost->st->time_base.den;
996 if ((pts < ti1) && (pts > 0))
997 ti1 = pts;
998 }
999 if (ti1 < 0.01)
1000 ti1 = 0.01;
1001
1002 if (verbose || is_last_report) {
1003 bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1004
1005 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1006 "size=%8.0fkB time=%0.1f bitrate=%6.1fkbits/s",
1007 (double)total_size / 1024, ti1, bitrate);
1008
1009 if (verbose > 1)
1010 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1011 nb_frames_dup, nb_frames_drop);
1012
1013 if (verbose >= 0)
1014 fprintf(stderr, "%s \r", buf);
1015
1016 fflush(stderr);
1017 }
1018
1019 if (is_last_report && verbose >= 0){
1020 int64_t raw= audio_size + video_size + extra_size;
1021 fprintf(stderr, "\n");
1022 fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1023 video_size/1024.0,
1024 audio_size/1024.0,
1025 extra_size/1024.0,
1026 100.0*(total_size - raw)/raw
1027 );
1028 }
1029 }
1030
1031 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1032 static int output_packet(AVInputStream *ist, int ist_index,
1033 AVOutputStream **ost_table, int nb_ostreams,
1034 const AVPacket *pkt)
1035 {
1036 AVFormatContext *os;
1037 AVOutputStream *ost;
1038 uint8_t *ptr;
1039 int len, ret, i;
1040 uint8_t *data_buf;
1041 int data_size, got_picture;
1042 AVFrame picture;
1043 void *buffer_to_free;
1044 static unsigned int samples_size= 0;
1045 static short *samples= NULL;
1046 AVSubtitle subtitle, *subtitle_to_free;
1047 int got_subtitle;
1048
1049 if(!pkt){
1050 ist->pts= ist->next_pts; // needed for last packet if vsync=0
1051 } else if (pkt->dts != AV_NOPTS_VALUE) { //FIXME seems redundant, as libavformat does this too
1052 ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1053 } else {
1054 // assert(ist->pts == ist->next_pts);
1055 }
1056
1057 if (pkt == NULL) {
1058 /* EOF handling */
1059 ptr = NULL;
1060 len = 0;
1061 goto handle_eof;
1062 }
1063
1064 len = pkt->size;
1065 ptr = pkt->data;
1066 while (len > 0) {
1067 handle_eof:
1068 /* decode the packet if needed */
1069 data_buf = NULL; /* fail safe */
1070 data_size = 0;
1071 subtitle_to_free = NULL;
1072 if (ist->decoding_needed) {
1073 switch(ist->st->codec->codec_type) {
1074 case CODEC_TYPE_AUDIO:{
1075 if(pkt)
1076 samples= av_fast_realloc(samples, &samples_size, FFMAX(pkt->size, AVCODEC_MAX_AUDIO_FRAME_SIZE));
1077 /* XXX: could avoid copy if PCM 16 bits with same
1078 endianness as CPU */
1079 ret = avcodec_decode_audio(ist->st->codec, samples, &data_size,
1080 ptr, len);
1081 if (ret < 0)
1082 goto fail_decode;
1083 ptr += ret;
1084 len -= ret;
1085 /* Some bug in mpeg audio decoder gives */
1086 /* data_size < 0, it seems they are overflows */
1087 if (data_size <= 0) {
1088 /* no audio frame */
1089 continue;
1090 }
1091 data_buf = (uint8_t *)samples;
1092 ist->next_pts += ((int64_t)AV_TIME_BASE/2 * data_size) /
1093 (ist->st->codec->sample_rate * ist->st->codec->channels);
1094 break;}
1095 case CODEC_TYPE_VIDEO:
1096 data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1097 /* XXX: allocate picture correctly */
1098 avcodec_get_frame_defaults(&picture);
1099
1100 ret = avcodec_decode_video(ist->st->codec,
1101 &picture, &got_picture, ptr, len);
1102 ist->st->quality= picture.quality;
1103 if (ret < 0)
1104 goto fail_decode;
1105 if (!got_picture) {
1106 /* no picture yet */
1107 goto discard_packet;
1108 }
1109 if (ist->st->codec->time_base.num != 0) {
1110 ist->next_pts += ((int64_t)AV_TIME_BASE *
1111 ist->st->codec->time_base.num) /
1112 ist->st->codec->time_base.den;
1113 }
1114 len = 0;
1115 break;
1116 case CODEC_TYPE_SUBTITLE:
1117 ret = avcodec_decode_subtitle(ist->st->codec,
1118 &subtitle, &got_subtitle, ptr, len);
1119 if (ret < 0)
1120 goto fail_decode;
1121 if (!got_subtitle) {
1122 goto discard_packet;
1123 }
1124 subtitle_to_free = &subtitle;
1125 len = 0;
1126 break;
1127 default:
1128 goto fail_decode;
1129 }
1130 } else {
1131 switch(ist->st->codec->codec_type) {
1132 case CODEC_TYPE_AUDIO:
1133 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1134 (ist->st->codec->sample_rate * ist->st->codec->channels);
1135 break;
1136 case CODEC_TYPE_VIDEO:
1137 if (ist->st->codec->time_base.num != 0) {
1138 ist->next_pts += ((int64_t)AV_TIME_BASE *
1139 ist->st->codec->time_base.num) /
1140 ist->st->codec->time_base.den;
1141 }
1142 break;
1143 }
1144 data_buf = ptr;
1145 data_size = len;
1146 ret = len;
1147 len = 0;
1148 }
1149
1150 buffer_to_free = NULL;
1151 if (ist->st->codec->codec_type == CODEC_TYPE_VIDEO) {
1152 pre_process_video_frame(ist, (AVPicture *)&picture,
1153 &buffer_to_free);
1154 }
1155
1156 // preprocess audio (volume)
1157 if (ist->st->codec->codec_type == CODEC_TYPE_AUDIO) {
1158 if (audio_volume != 256) {
1159 short *volp;
1160 volp = samples;
1161 for(i=0;i<(data_size / sizeof(short));i++) {
1162 int v = ((*volp) * audio_volume + 128) >> 8;
1163 if (v < -32768) v = -32768;
1164 if (v > 32767) v = 32767;
1165 *volp++ = v;
1166 }
1167 }
1168 }
1169
1170 /* frame rate emulation */
1171 if (ist->st->codec->rate_emu) {
1172 int64_t pts = av_rescale((int64_t) ist->frame * ist->st->codec->time_base.num, 1000000, ist->st->codec->time_base.den);
1173 int64_t now = av_gettime() - ist->start;
1174 if (pts > now)
1175 usleep(pts - now);
1176
1177 ist->frame++;
1178 }
1179
1180 #if 0
1181 /* mpeg PTS deordering : if it is a P or I frame, the PTS
1182 is the one of the next displayed one */
1183 /* XXX: add mpeg4 too ? */
1184 if (ist->st->codec->codec_id == CODEC_ID_MPEG1VIDEO) {
1185 if (ist->st->codec->pict_type != B_TYPE) {
1186 int64_t tmp;
1187 tmp = ist->last_ip_pts;
1188 ist->last_ip_pts = ist->frac_pts.val;
1189 ist->frac_pts.val = tmp;
1190 }
1191 }
1192 #endif
1193 /* if output time reached then transcode raw format,
1194 encode packets and output them */
1195 if (start_time == 0 || ist->pts >= start_time)
1196 for(i=0;i<nb_ostreams;i++) {
1197 int frame_size;
1198
1199 ost = ost_table[i];
1200 if (ost->source_index == ist_index) {
1201 os = output_files[ost->file_index];
1202
1203 #if 0
1204 printf("%d: got pts=%0.3f %0.3f\n", i,
1205 (double)pkt->pts / AV_TIME_BASE,
1206 ((double)ist->pts / AV_TIME_BASE) -
1207 ((double)ost->st->pts.val * ost->st->time_base.num / ost->st->time_base.den));
1208 #endif
1209 /* set the input output pts pairs */
1210 //ost->sync_ipts = (double)(ist->pts + input_files_ts_offset[ist->file_index] - start_time)/ AV_TIME_BASE;
1211
1212 if (ost->encoding_needed) {
1213 switch(ost->st->codec->codec_type) {
1214 case CODEC_TYPE_AUDIO:
1215 do_audio_out(os, ost, ist, data_buf, data_size);
1216 break;
1217 case CODEC_TYPE_VIDEO:
1218 do_video_out(os, ost, ist, &picture, &frame_size);
1219 video_size += frame_size;
1220 if (do_vstats && frame_size)
1221 do_video_stats(os, ost, frame_size);
1222 break;
1223 case CODEC_TYPE_SUBTITLE:
1224 do_subtitle_out(os, ost, ist, &subtitle,
1225 pkt->pts);
1226 break;
1227 default:
1228 av_abort();
1229 }
1230 } else {
1231 AVFrame avframe; //FIXME/XXX remove this
1232 AVPacket opkt;
1233 av_init_packet(&opkt);
1234
1235 /* no reencoding needed : output the packet directly */
1236 /* force the input stream PTS */
1237
1238 avcodec_get_frame_defaults(&avframe);
1239 ost->st->codec->coded_frame= &avframe;
1240 avframe.key_frame = pkt->flags & PKT_FLAG_KEY;
1241
1242 if(ost->st->codec->codec_type == CODEC_TYPE_AUDIO)
1243 audio_size += data_size;
1244 else if (ost->st->codec->codec_type == CODEC_TYPE_VIDEO) {
1245 video_size += data_size;
1246 ost->sync_opts++;
1247 }
1248
1249 opkt.stream_index= ost->index;
1250 if(pkt->pts != AV_NOPTS_VALUE)
1251 opkt.pts= av_rescale_q(av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q) + input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ost->st->time_base);
1252 else
1253 opkt.pts= AV_NOPTS_VALUE;
1254
1255 {
1256 int64_t dts;
1257 if (pkt->dts == AV_NOPTS_VALUE)
1258 dts = ist->next_pts;
1259 else
1260 dts= av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1261 opkt.dts= av_rescale_q(dts + input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ost->st->time_base);
1262 }
1263 opkt.flags= pkt->flags;
1264
1265 //FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1266 if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & PKT_FLAG_KEY))
1267 opkt.destruct= av_destruct_packet;
1268
1269 write_frame(os, &opkt, ost->st->codec, bitstream_filters[ost->file_index][pkt->stream_index]);
1270 ost->st->codec->frame_number++;
1271 ost->frame_number++;
1272 av_free_packet(&opkt);
1273 }
1274 }
1275 }
1276 av_free(buffer_to_free);
1277 /* XXX: allocate the subtitles in the codec ? */
1278 if (subtitle_to_free) {
1279 if (subtitle_to_free->rects != NULL) {
1280 for (i = 0; i < subtitle_to_free->num_rects; i++) {
1281 av_free(subtitle_to_free->rects[i].bitmap);
1282 av_free(subtitle_to_free->rects[i].rgba_palette);
1283 }
1284 av_freep(&subtitle_to_free->rects);
1285 }
1286 subtitle_to_free->num_rects = 0;
1287 subtitle_to_free = NULL;
1288 }
1289 }
1290 discard_packet:
1291 if (pkt == NULL) {
1292 /* EOF handling */
1293
1294 for(i=0;i<nb_ostreams;i++) {
1295 ost = ost_table[i];
1296 if (ost->source_index == ist_index) {
1297 AVCodecContext *enc= ost->st->codec;
1298 os = output_files[ost->file_index];
1299
1300 if(ost->st->codec->codec_type == CODEC_TYPE_AUDIO && enc->frame_size <=1)
1301 continue;
1302 if(ost->st->codec->codec_type == CODEC_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1303 continue;
1304
1305 if (ost->encoding_needed) {
1306 for(;;) {
1307 AVPacket pkt;
1308 int fifo_bytes;
1309 av_init_packet(&pkt);
1310 pkt.stream_index= ost->index;
1311
1312 switch(ost->st->codec->codec_type) {
1313 case CODEC_TYPE_AUDIO:
1314 fifo_bytes = av_fifo_size(&ost->fifo);
1315 ret = 0;
1316 /* encode any samples remaining in fifo */
1317 if(fifo_bytes > 0 && enc->codec->capabilities & CODEC_CAP_SMALL_LAST_FRAME) {
1318 int fs_tmp = enc->frame_size;
1319 enc->frame_size = fifo_bytes / (2 * enc->channels);
1320 if(av_fifo_read(&ost->fifo, (uint8_t *)samples, fifo_bytes) == 0) {
1321 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, samples);
1322 }
1323 enc->frame_size = fs_tmp;
1324 }
1325 if(ret <= 0) {
1326 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1327 }
1328 audio_size += ret;
1329 pkt.flags |= PKT_FLAG_KEY;
1330 break;
1331 case CODEC_TYPE_VIDEO:
1332 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1333 video_size += ret;
1334 if(enc->coded_frame && enc->coded_frame->key_frame)
1335 pkt.flags |= PKT_FLAG_KEY;
1336 if (ost->logfile && enc->stats_out) {
1337 fprintf(ost->logfile, "%s", enc->stats_out);
1338 }
1339 break;
1340 default:
1341 ret=-1;
1342 }
1343
1344 if(ret<=0)
1345 break;
1346 pkt.data= bit_buffer;
1347 pkt.size= ret;
1348 if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1349 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1350 write_frame(os, &pkt, ost->st->codec, bitstream_filters[ost->file_index][pkt.stream_index]);
1351 }
1352 }
1353 }
1354 }
1355 }
1356
1357 return 0;
1358 fail_decode:
1359 return -1;
1360 }
1361
1362
1363 /*
1364 * The following code is the main loop of the file converter
1365 */
1366 static int av_encode(AVFormatContext **output_files,
1367 int nb_output_files,
1368 AVFormatContext **input_files,
1369 int nb_input_files,
1370 AVStreamMap *stream_maps, int nb_stream_maps)
1371 {
1372 int ret, i, j, k, n, nb_istreams = 0, nb_ostreams = 0;
1373 AVFormatContext *is, *os;
1374 AVCodecContext *codec, *icodec;
1375 AVOutputStream *ost, **ost_table = NULL;
1376 AVInputStream *ist, **ist_table = NULL;
1377 AVInputFile *file_table;
1378 AVFormatContext *stream_no_data;
1379 int key;
1380
1381 file_table= (AVInputFile*) av_mallocz(nb_input_files * sizeof(AVInputFile));
1382 if (!file_table)
1383 goto fail;
1384
1385 /* input stream init */
1386 j = 0;
1387 for(i=0;i<nb_input_files;i++) {
1388 is = input_files[i];
1389 file_table[i].ist_index = j;
1390 file_table[i].nb_streams = is->nb_streams;
1391 j += is->nb_streams;
1392 }
1393 nb_istreams = j;
1394
1395 ist_table = av_mallocz(nb_istreams * sizeof(AVInputStream *));
1396 if (!ist_table)
1397 goto fail;
1398
1399 for(i=0;i<nb_istreams;i++) {
1400 ist = av_mallocz(sizeof(AVInputStream));
1401 if (!ist)
1402 goto fail;
1403 ist_table[i] = ist;
1404 }
1405 j = 0;
1406 for(i=0;i<nb_input_files;i++) {
1407 is = input_files[i];
1408 for(k=0;k<is->nb_streams;k++) {
1409 ist = ist_table[j++];
1410 ist->st = is->streams[k];
1411 ist->file_index = i;
1412 ist->index = k;
1413 ist->discard = 1; /* the stream is discarded by default
1414 (changed later) */
1415
1416 if (ist->st->codec->rate_emu) {
1417 ist->start = av_gettime();
1418 ist->frame = 0;
1419 }
1420 }
1421 }
1422
1423 /* output stream init */
1424 nb_ostreams = 0;
1425 for(i=0;i<nb_output_files;i++) {
1426 os = output_files[i];
1427 if (!os->nb_streams) {
1428 fprintf(stderr, "Output file does not contain any stream\n");
1429 exit(1);
1430 }
1431 nb_ostreams += os->nb_streams;
1432 }
1433 if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) {
1434 fprintf(stderr, "Number of stream maps must match number of output streams\n");
1435 exit(1);
1436 }
1437
1438 /* Sanity check the mapping args -- do the input files & streams exist? */
1439 for(i=0;i<nb_stream_maps;i++) {
1440 int fi = stream_maps[i].file_index;
1441 int si = stream_maps[i].stream_index;
1442
1443 if (fi < 0 || fi > nb_input_files - 1 ||
1444 si < 0 || si > file_table[fi].nb_streams - 1) {
1445 fprintf(stderr,"Could not find input stream #%d.%d\n", fi, si);
1446 exit(1);
1447 }
1448 fi = stream_maps[i].sync_file_index;
1449 si = stream_maps[i].sync_stream_index;
1450 if (fi < 0 || fi > nb_input_files - 1 ||
1451 si < 0 || si > file_table[fi].nb_streams - 1) {
1452 fprintf(stderr,"Could not find sync stream #%d.%d\n", fi, si);
1453 exit(1);
1454 }
1455 }
1456
1457 ost_table = av_mallocz(sizeof(AVOutputStream *) * nb_ostreams);
1458 if (!ost_table)
1459 goto fail;
1460 for(i=0;i<nb_ostreams;i++) {
1461 ost = av_mallocz(sizeof(AVOutputStream));
1462 if (!ost)
1463 goto fail;
1464 ost_table[i] = ost;
1465 }
1466
1467 n = 0;
1468 for(k=0;k<nb_output_files;k++) {
1469 os = output_files[k];
1470 for(i=0;i<os->nb_streams;i++) {
1471 int found;
1472 ost = ost_table[n++];
1473 ost->file_index = k;
1474 ost->index = i;
1475 ost->st = os->streams[i];
1476 if (nb_stream_maps > 0) {
1477 ost->source_index = file_table[stream_maps[n-1].file_index].ist_index +
1478 stream_maps[n-1].stream_index;
1479
1480 /* Sanity check that the stream types match */
1481 if (ist_table[ost->source_index]->st->codec->codec_type != ost->st->codec->codec_type) {
1482 fprintf(stderr, "Codec type mismatch for mapping #%d.%d -> #%d.%d\n",
1483 stream_maps[n-1].file_index, stream_maps[n-1].stream_index,
1484 ost->file_index, ost->index);
1485 exit(1);
1486 }
1487
1488 } else {
1489 /* get corresponding input stream index : we select the first one with the right type */
1490 found = 0;
1491 for(j=0;j<nb_istreams;j++) {
1492 ist = ist_table[j];
1493 if (ist->discard &&
1494 ist->st->codec->codec_type == ost->st->codec->codec_type) {
1495 ost->source_index = j;
1496 found = 1;
1497 break;
1498 }
1499 }
1500
1501 if (!found) {
1502 /* try again and reuse existing stream */
1503 for(j=0;j<nb_istreams;j++) {
1504 ist = ist_table[j];
1505 if (ist->st->codec->codec_type == ost->st->codec->codec_type) {
1506 ost->source_index = j;
1507 found = 1;
1508 }
1509 }
1510 if (!found) {
1511 fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
1512 ost->file_index, ost->index);
1513 exit(1);
1514 }
1515 }
1516 }
1517 ist = ist_table[ost->source_index];
1518 ist->discard = 0;
1519 ost->sync_ist = (nb_stream_maps > 0) ?
1520 ist_table[file_table[stream_maps[n-1].sync_file_index].ist_index +
1521 stream_maps[n-1].sync_stream_index] : ist;
1522 }
1523 }
1524
1525 /* for each output stream, we compute the right encoding parameters */
1526 for(i=0;i<nb_ostreams;i++) {
1527 ost = ost_table[i];
1528 ist = ist_table[ost->source_index];
1529
1530 codec = ost->st->codec;
1531 icodec = ist->st->codec;
1532
1533 if (ost->st->stream_copy) {
1534 /* if stream_copy is selected, no need to decode or encode */
1535 codec->codec_id = icodec->codec_id;
1536 codec->codec_type = icodec->codec_type;
1537 if(!codec->codec_tag) codec->codec_tag = icodec->codec_tag;
1538 codec->bit_rate = icodec->bit_rate;
1539 codec->extradata= icodec->extradata;
1540 codec->extradata_size= icodec->extradata_size;
1541 if(av_q2d(icodec->time_base) > av_q2d(ist->st->time_base) && av_q2d(ist->st->time_base) < 1.0/1000)
1542 codec->time_base = icodec->time_base;
1543 else
1544 codec->time_base = ist->st->time_base;
1545 switch(codec->codec_type) {
1546 case CODEC_TYPE_AUDIO:
1547 codec->sample_rate = icodec->sample_rate;
1548 codec->channels = icodec->channels;
1549 codec->frame_size = icodec->frame_size;
1550 codec->block_align= icodec->block_align;
1551 break;
1552 case CODEC_TYPE_VIDEO:
1553 codec->pix_fmt = icodec->pix_fmt;
1554 codec->width = icodec->width;
1555 codec->height = icodec->height;
1556 codec->has_b_frames = icodec->has_b_frames;
1557 break;
1558 case CODEC_TYPE_SUBTITLE:
1559 break;
1560 default:
1561 av_abort();
1562 }
1563 } else {
1564 switch(codec->codec_type) {
1565 case CODEC_TYPE_AUDIO:
1566 if (av_fifo_init(&ost->fifo, 2 * MAX_AUDIO_PACKET_SIZE))
1567 goto fail;
1568
1569 if (codec->channels == icodec->channels &&
1570 codec->sample_rate == icodec->sample_rate) {
1571 ost->audio_resample = 0;
1572 } else {
1573 if (codec->channels != icodec->channels &&
1574 (icodec->codec_id == CODEC_ID_AC3 ||
1575 icodec->codec_id == CODEC_ID_DTS)) {
1576 /* Special case for 5:1 AC3 and DTS input */
1577 /* and mono or stereo output */
1578 /* Request specific number of channels */
1579 icodec->channels = codec->channels;
1580 if (codec->sample_rate == icodec->sample_rate)
1581 ost->audio_resample = 0;
1582 else {
1583 ost->audio_resample = 1;
1584 }
1585 } else {
1586 ost->audio_resample = 1;
1587 }
1588 }
1589 if(audio_sync_method>1)
1590 ost->audio_resample = 1;
1591
1592 if(ost->audio_resample){
1593 ost->resample = audio_resample_init(codec->channels, icodec->channels,
1594 codec->sample_rate, icodec->sample_rate);
1595 if(!ost->resample){
1596 printf("Can't resample. Aborting.\n");
1597 av_abort();
1598 }
1599 }
1600 ist->decoding_needed = 1;
1601 ost->encoding_needed = 1;
1602 break;
1603 case CODEC_TYPE_VIDEO:
1604 ost->video_crop = ((frame_leftBand + frame_rightBand + frame_topBand + frame_bottomBand) != 0);
1605 ost->video_pad = ((frame_padleft + frame_padright + frame_padtop + frame_padbottom) != 0);
1606 ost->video_resample = ((codec->width != icodec->width -
1607 (frame_leftBand + frame_rightBand) +
1608 (frame_padleft + frame_padright)) ||
1609 (codec->height != icodec->height -
1610 (frame_topBand + frame_bottomBand) +
1611 (frame_padtop + frame_padbottom)) ||
1612 (codec->pix_fmt != icodec->pix_fmt));
1613 if (ost->video_crop) {
1614 ost->topBand = frame_topBand;
1615 ost->leftBand = frame_leftBand;
1616 }
1617 if (ost->video_pad) {
1618 ost->padtop = frame_padtop;
1619 ost->padleft = frame_padleft;
1620 ost->padbottom = frame_padbottom;
1621 ost->padright = frame_padright;
1622 if (!ost->video_resample) {
1623 avcodec_get_frame_defaults(&ost->pict_tmp);
1624 if( avpicture_alloc( (AVPicture*)&ost->pict_tmp, codec->pix_fmt,
1625 codec->width, codec->height ) )
1626 goto fail;
1627 }
1628 }
1629 if (ost->video_resample) {
1630 avcodec_get_frame_defaults(&ost->pict_tmp);
1631 if( avpicture_alloc( (AVPicture*)&ost->pict_tmp, codec->pix_fmt,
1632 codec->width, codec->height ) )
1633 goto fail;
1634
1635 ost->img_resample_ctx = sws_getContext(
1636 icodec->width - (frame_leftBand + frame_rightBand),
1637 icodec->height - (frame_topBand + frame_bottomBand),
1638 icodec->pix_fmt,
1639 codec->width - (frame_padleft + frame_padright),
1640 codec->height - (frame_padtop + frame_padbottom),
1641 codec->pix_fmt,
1642 sws_flags, NULL, NULL, NULL);
1643 if (ost->img_resample_ctx == NULL) {
1644 fprintf(stderr, "Cannot get resampling context\n");
1645 exit(1);
1646 }
1647 ost->resample_height = icodec->height - (frame_topBand + frame_bottomBand);
1648 }
1649 ost->encoding_needed = 1;
1650 ist->decoding_needed = 1;
1651 break;
1652 case CODEC_TYPE_SUBTITLE:
1653 ost->encoding_needed = 1;
1654 ist->decoding_needed = 1;
1655 break;
1656 default:
1657 av_abort();
1658 break;
1659 }
1660 /* two pass mode */
1661 if (ost->encoding_needed &&
1662 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
1663 char logfilename[1024];
1664 FILE *f;
1665 int size;
1666 char *logbuffer;
1667
1668 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
1669 pass_logfilename ?
1670 pass_logfilename : DEFAULT_PASS_LOGFILENAME, i);
1671 if (codec->flags & CODEC_FLAG_PASS1) {
1672 f = fopen(logfilename, "w");
1673 if (!f) {
1674 perror(logfilename);
1675 exit(1);
1676 }
1677 ost->logfile = f;
1678 } else {
1679 /* read the log file */
1680 f = fopen(logfilename, "r");
1681 if (!f) {
1682 perror(logfilename);
1683 exit(1);
1684 }
1685 fseek(f, 0, SEEK_END);
1686 size = ftell(f);
1687 fseek(f, 0, SEEK_SET);
1688 logbuffer = av_malloc(size + 1);
1689 if (!logbuffer) {
1690 fprintf(stderr, "Could not allocate log buffer\n");
1691 exit(1);
1692 }
1693 size = fread(logbuffer, 1, size, f);
1694 fclose(f);
1695 logbuffer[size] = '\0';
1696 codec->stats_in = logbuffer;
1697 }
1698 }
1699 }
1700 if(codec->codec_type == CODEC_TYPE_VIDEO){
1701 int size= codec->width * codec->height;
1702 bit_buffer_size= FFMAX(bit_buffer_size, 4*size);
1703 }
1704 }
1705
1706 if (!bit_buffer)
1707 bit_buffer = av_malloc(bit_buffer_size);
1708 if (!bit_buffer)
1709 goto fail;
1710
1711 /* dump the file output parameters - cannot be done before in case
1712 of stream copy */
1713 for(i=0;i<nb_output_files;i++) {
1714 dump_format(output_files[i], i, output_files[i]->filename, 1);
1715 }
1716
1717 /* dump the stream mapping */
1718 if (verbose >= 0) {
1719 fprintf(stderr, "Stream mapping:\n");
1720 for(i=0;i<nb_ostreams;i++) {
1721 ost = ost_table[i];
1722 fprintf(stderr, " Stream #%d.%d -> #%d.%d",
1723 ist_table[ost->source_index]->file_index,
1724 ist_table[ost->source_index]->index,
1725 ost->file_index,
1726 ost->index);
1727 if (ost->sync_ist != ist_table[ost->source_index])
1728 fprintf(stderr, " [sync #%d.%d]",
1729 ost->sync_ist->file_index,
1730 ost->sync_ist->index);
1731 fprintf(stderr, "\n");
1732 }
1733 }
1734
1735 /* open each encoder */
1736 for(i=0;i<nb_ostreams;i++) {
1737 ost = ost_table[i];
1738 if (ost->encoding_needed) {
1739 AVCodec *codec;
1740 codec = avcodec_find_encoder(ost->st->codec->codec_id);
1741 if (!codec) {
1742 fprintf(stderr, "Unsupported codec for output stream #%d.%d\n",
1743 ost->file_index, ost->index);
1744 exit(1);
1745 }
1746 if (avcodec_open(ost->st->codec, codec) < 0) {
1747 fprintf(stderr, "Error while opening codec for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height\n",
1748 ost->file_index, ost->index);
1749 exit(1);
1750 }
1751 extra_size += ost->st->codec->extradata_size;
1752 }
1753 }
1754
1755 /* open each decoder */
1756 for(i=0;i<nb_istreams;i++) {
1757 ist = ist_table[i];
1758 if (ist->decoding_needed) {
1759 AVCodec *codec;
1760 codec = avcodec_find_decoder(ist->st->codec->codec_id);
1761 if (!codec) {
1762 fprintf(stderr, "Unsupported codec (id=%d) for input stream #%d.%d\n",
1763 ist->st->codec->codec_id, ist->file_index, ist->index);
1764 exit(1);
1765 }
1766 if (avcodec_open(ist->st->codec, codec) < 0) {
1767 fprintf(stderr, "Error while opening codec for input stream #%d.%d\n",
1768 ist->file_index, ist->index);
1769 exit(1);
1770 }
1771 //if (ist->st->codec->codec_type == CODEC_TYPE_VIDEO)
1772 // ist->st->codec->flags |= CODEC_FLAG_REPEAT_FIELD;
1773 }
1774 }
1775
1776 /* init pts */
1777 for(i=0;i<nb_istreams;i++) {
1778 ist = ist_table[i];
1779 is = input_files[ist->file_index];
1780 ist->pts = 0;
1781 ist->next_pts = av_rescale_q(ist->st->start_time, ist->st->time_base, AV_TIME_BASE_Q);
1782 if(ist->st->start_time == AV_NOPTS_VALUE)
1783 ist->next_pts=0;
1784 if(input_files_ts_offset[ist->file_index])
1785 ist->next_pts= AV_NOPTS_VALUE;
1786 ist->is_start = 1;
1787 }
1788
1789 /* compute buffer size max (should use a complete heuristic) */
1790 for(i=0;i<nb_input_files;i++) {
1791 file_table[i].buffer_size_max = 2048;
1792 }
1793
1794 /* set meta data information from input file if required */
1795 for (i=0;i<nb_meta_data_maps;i++) {
1796 AVFormatContext *out_file;
1797 AVFormatContext *in_file;
1798
1799 int out_file_index = meta_data_maps[i].out_file;
1800 int in_file_index = meta_data_maps[i].in_file;
1801 if ( out_file_index < 0 || out_file_index >= nb_output_files ) {
1802 fprintf(stderr, "Invalid output file index %d map_meta_data(%d,%d)\n", out_file_index, out_file_index, in_file_index);
1803 ret = -EINVAL;
1804 goto fail;
1805 }
1806 if ( in_file_index < 0 || in_file_index >= nb_input_files ) {
1807 fprintf(stderr, "Invalid input file index %d map_meta_data(%d,%d)\n", in_file_index, out_file_index, in_file_index);
1808 ret = -EINVAL;
1809 goto fail;
1810 }
1811
1812 out_file = output_files[out_file_index];
1813 in_file = input_files[in_file_index];
1814
1815 strcpy(out_file->title, in_file->title);
1816 strcpy(out_file->author, in_file->author);
1817 strcpy(out_file->copyright, in_file->copyright);
1818 strcpy(out_file->comment, in_file->comment);
1819 strcpy(out_file->album, in_file->album);
1820 out_file->year = in_file->year;
1821 out_file->track = in_file->track;
1822 strcpy(out_file->genre, in_file->genre);
1823 }
1824
1825 /* open files and write file headers */
1826 for(i=0;i<nb_output_files;i++) {
1827 os = output_files[i];
1828 if (av_write_header(os) < 0) {
1829 fprintf(stderr, "Could not write header for output file #%d (incorrect codec parameters ?)\n", i);
1830 ret = -EINVAL;
1831 goto fail;
1832 }
1833 }
1834
1835 #ifndef __MINGW32__
1836 if ( !using_stdin && verbose >= 0) {
1837 fprintf(stderr, "Press [q] to stop encoding\n");
1838 url_set_interrupt_cb(decode_interrupt_cb);
1839 }
1840 #endif
1841 term_init();
1842
1843 stream_no_data = 0;
1844 key = -1;
1845
1846 for(; received_sigterm == 0;) {
1847 int file_index, ist_index;
1848 AVPacket pkt;
1849 double ipts_min;
1850 double opts_min;
1851
1852 redo:
1853 ipts_min= 1e100;
1854 opts_min= 1e100;
1855 /* if 'q' pressed, exits */
1856 if (!using_stdin) {
1857 if (q_pressed)
1858 break;
1859 /* read_key() returns 0 on EOF */
1860 key = read_key();
1861 if (key == 'q')
1862 break;
1863 }
1864
1865 /* select the stream that we must read now by looking at the
1866 smallest output pts */
1867 file_index = -1;
1868 for(i=0;i<nb_ostreams;i++) {
1869 double ipts, opts;
1870 ost = ost_table[i];
1871 os = output_files[ost->file_index];
1872 ist = ist_table[ost->source_index];
1873 if(ost->st->codec->codec_type == CODEC_TYPE_VIDEO)
1874 opts = ost->sync_opts * av_q2d(ost->st->codec->time_base);
1875 else
1876 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
1877 ipts = (double)ist->pts;
1878 if (!file_table[ist->file_index].eof_reached){
1879 if(ipts < ipts_min) {
1880 ipts_min = ipts;
1881 if(input_sync ) file_index = ist->file_index;
1882 }
1883 if(opts < opts_min) {
1884 opts_min = opts;
1885 if(!input_sync) file_index = ist->file_index;
1886 }
1887 }
1888 if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
1889 file_index= -1;
1890 break;
1891 }
1892 }
1893 /* if none, if is finished */
1894 if (file_index < 0) {
1895 break;
1896 }
1897
1898 /* finish if recording time exhausted */
1899 if (recording_time > 0 && opts_min >= (recording_time / 1000000.0))
1900 break;
1901
1902 /* finish if limit size exhausted */
1903 if (limit_filesize != 0 && (limit_filesize * 1024) < url_ftell(&output_files[0]->pb))
1904 break;
1905
1906 /* read a frame from it and output it in the fifo */
1907 is = input_files[file_index];
1908 if (av_read_frame(is, &pkt) < 0) {
1909 file_table[file_index].eof_reached = 1;
1910 if (opt_shortest) break; else continue; //
1911 }
1912
1913 if (!pkt.size) {
1914 stream_no_data = is;
1915 } else {
1916 stream_no_data = 0;
1917 }
1918 if (do_pkt_dump) {
1919 av_pkt_dump(stdout, &pkt, do_hex_dump);
1920 }
1921 /* the following test is needed in case new streams appear
1922 dynamically in stream : we ignore them */
1923 if (pkt.stream_index >= file_table[file_index].nb_streams)
1924 goto discard_packet;
1925 ist_index = file_table[file_index].ist_index + pkt.stream_index;
1926 ist = ist_table[ist_index];
1927 if (ist->discard)
1928 goto discard_packet;
1929
1930 // 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);
1931 if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE) {
1932 int64_t delta= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q) - ist->next_pts;
1933 if(FFABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE && !copy_ts){
1934 input_files_ts_offset[ist->file_index]-= delta;
1935 if (verbose > 2)
1936 fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n", delta, input_files_ts_offset[ist->file_index]);
1937 for(i=0; i<file_table[file_index].nb_streams; i++){
1938 int index= file_table[file_index].ist_index + i;
1939 ist_table[index]->next_pts += delta;
1940 ist_table[index]->is_start=1;
1941 }
1942 }
1943 }
1944
1945 //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->index, pkt.size);
1946 if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
1947
1948 if (verbose >= 0)
1949 fprintf(stderr, "Error while decoding stream #%d.%d\n",
1950 ist->file_index, ist->index);
1951
1952 av_free_packet(&pkt);
1953 goto redo;
1954 }
1955
1956 discard_packet:
1957 av_free_packet(&pkt);
1958
1959 /* dump report by using the output first video and audio streams */
1960 print_report(output_files, ost_table, nb_ostreams, 0);
1961 }
1962
1963 /* at the end of stream, we must flush the decoder buffers */
1964 for(i=0;i<nb_istreams;i++) {
1965 ist = ist_table[i];
1966 if (ist->decoding_needed) {
1967 output_packet(ist, i, ost_table, nb_ostreams, NULL);
1968 }
1969 }
1970
1971 term_exit();
1972
1973 /* write the trailer if needed and close file */
1974 for(i=0;i<nb_output_files;i++) {
1975 os = output_files[i];
1976 av_write_trailer(os);
1977 }
1978
1979 /* dump report by using the first video and audio streams */
1980 print_report(output_files, ost_table, nb_ostreams, 1);
1981
1982 /* close each encoder */
1983 for(i=0;i<nb_ostreams;i++) {
1984 ost = ost_table[i];
1985 if (ost->encoding_needed) {
1986 av_freep(&ost->st->codec->stats_in);
1987 avcodec_close(ost->st->codec);
1988 }
1989 }
1990
1991 /* close each decoder */
1992 for(i=0;i<nb_istreams;i++) {
1993 ist = ist_table[i];
1994 if (ist->decoding_needed) {
1995 avcodec_close(ist->st->codec);
1996 }
1997 }
1998
1999 /* finished ! */
2000
2001 ret = 0;
2002 fail1:
2003 av_freep(&bit_buffer);
2004 av_free(file_table);
2005
2006 if (ist_table) {
2007 for(i=0;i<nb_istreams;i++) {
2008 ist = ist_table[i];
2009 av_free(ist);
2010 }
2011 av_free(ist_table);
2012 }
2013 if (ost_table) {
2014 for(i=0;i<nb_ostreams;i++) {
2015 ost = ost_table[i];
2016 if (ost) {
2017 if (ost->logfile) {
2018 fclose(ost->logfile);
2019 ost->logfile = NULL;
2020 }
2021 av_fifo_free(&ost->fifo); /* works even if fifo is not
2022 initialized but set to zero */
2023 av_free(ost->pict_tmp.data[0]);
2024 if (ost->video_resample)
2025 sws_freeContext(ost->img_resample_ctx);
2026 if (ost->audio_resample)
2027 audio_resample_close(ost->resample);
2028 av_free(ost);
2029 }
2030 }
2031 av_free(ost_table);
2032 }
2033 return ret;
2034 fail:
2035 ret = -ENOMEM;
2036 goto fail1;
2037 }
2038
2039 #if 0
2040 int file_read(const char *filename)
2041 {
2042 URLContext *h;
2043 unsigned char buffer[1024];
2044 int len, i;
2045
2046 if (url_open(&h, filename, O_RDONLY) < 0) {
2047 printf("could not open '%s'\n", filename);
2048 return -1;
2049 }
2050 for(;;) {
2051 len = url_read(h, buffer, sizeof(buffer));
2052 if (len <= 0)
2053 break;
2054 for(i=0;i<len;i++) putchar(buffer[i]);
2055 }
2056 url_close(h);
2057 return 0;
2058 }
2059 #endif
2060
2061 static void opt_format(const char *arg)
2062 {
2063 /* compatibility stuff for pgmyuv */
2064 if (!strcmp(arg, "pgmyuv")) {
2065 pgmyuv_compatibility_hack=1;
2066 // opt_image_format(arg);
2067 arg = "image2";
2068 }
2069
2070 file_iformat = av_find_input_format(arg);
2071 file_oformat = guess_format(arg, NULL, NULL);
2072 if (!file_iformat && !file_oformat) {
2073 fprintf(stderr, "Unknown input or output format: %s\n", arg);
2074 exit(1);
2075 }
2076 }
2077
2078 static void opt_video_rc_eq(char *arg)
2079 {
2080 video_rc_eq = arg;
2081 }
2082
2083 static void opt_video_rc_override_string(char *arg)
2084 {
2085 video_rc_override_string = arg;
2086 }
2087
2088 static void opt_me_threshold(const char *arg)
2089 {
2090 me_threshold = atoi(arg);
2091 }
2092
2093 static void opt_verbose(const char *arg)
2094 {
2095 verbose = atoi(arg);
2096 av_log_set_level(atoi(arg));
2097 }
2098
2099 static void opt_frame_rate(const char *arg)
2100 {
2101 if (parse_frame_rate(&frame_rate, &frame_rate_base, arg) < 0) {
2102 fprintf(stderr, "Incorrect frame rate\n");
2103 exit(1);
2104 }
2105 }
2106
2107 static void opt_frame_crop_top(const char *arg)
2108 {
2109 frame_topBand = atoi(arg);
2110 if (frame_topBand < 0) {
2111 fprintf(stderr, "Incorrect top crop size\n");
2112 exit(1);
2113 }
2114 if ((frame_topBand % 2) != 0) {
2115 fprintf(stderr, "Top crop size must be a multiple of 2\n");
2116 exit(1);
2117 }
2118 if ((frame_topBand) >= frame_height){
2119 fprintf(stderr, "Vertical crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");
2120 exit(1);
2121 }
2122 frame_height -= frame_topBand;
2123 }
2124
2125 static void opt_frame_crop_bottom(const char *arg)
2126 {
2127 frame_bottomBand = atoi(arg);
2128 if (frame_bottomBand < 0) {
2129 fprintf(stderr, "Incorrect bottom crop size\n");
2130 exit(1);
2131 }
2132 if ((frame_bottomBand % 2) != 0) {
2133 fprintf(stderr, "Bottom crop size must be a multiple of 2\n");
2134 exit(1);
2135 }
2136 if ((frame_bottomBand) >= frame_height){
2137 fprintf(stderr, "Vertical crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");
2138 exit(1);
2139 }
2140 frame_height -= frame_bottomBand;
2141 }
2142
2143 static void opt_frame_crop_left(const char *arg)
2144 {
2145 frame_leftBand = atoi(arg);
2146 if (frame_leftBand < 0) {
2147 fprintf(stderr, "Incorrect left crop size\n");
2148 exit(1);
2149 }
2150 if ((frame_leftBand % 2) != 0) {
2151 fprintf(stderr, "Left crop size must be a multiple of 2\n");
2152 exit(1);
2153 }
2154 if ((frame_leftBand) >= frame_width){
2155 fprintf(stderr, "Horizontal crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");
2156 exit(1);
2157 }
2158 frame_width -= frame_leftBand;
2159 }
2160
2161 static void opt_frame_crop_right(const char *arg)
2162 {
2163 frame_rightBand = atoi(arg);
2164 if (frame_rightBand < 0) {
2165 fprintf(stderr, "Incorrect right crop size\n");
2166 exit(1);
2167 }
2168 if ((frame_rightBand % 2) != 0) {
2169 fprintf(stderr, "Right crop size must be a multiple of 2\n");
2170 exit(1);
2171 }
2172 if ((frame_rightBand) >= frame_width){
2173 fprintf(stderr, "Horizontal crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");
2174 exit(1);
2175 }
2176 frame_width -= frame_rightBand;
2177 }
2178
2179 static void opt_frame_size(const char *arg)
2180 {
2181 if (parse_image_size(&frame_width, &frame_height, arg) < 0) {
2182 fprintf(stderr, "Incorrect frame size\n");
2183 exit(1);
2184 }
2185 if ((frame_width % 2) != 0 || (frame_height % 2) != 0) {
2186 fprintf(stderr, "Frame size must be a multiple of 2\n");
2187 exit(1);
2188 }
2189 }
2190
2191
2192 #define SCALEBITS 10
2193 #define ONE_HALF (1 << (SCALEBITS - 1))
2194 #define FIX(x) ((int) ((x) * (1<<SCALEBITS) + 0.5))
2195
2196 #define RGB_TO_Y(r, g, b) \
2197 ((FIX(0.29900) * (r) + FIX(0.58700) * (g) + \
2198 FIX(0.11400) * (b) + ONE_HALF) >> SCALEBITS)
2199
2200 #define RGB_TO_U(r1, g1, b1, shift)\
2201 (((- FIX(0.16874) * r1 - FIX(0.33126) * g1 + \
2202 FIX(0.50000) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
2203
2204 #define RGB_TO_V(r1, g1, b1, shift)\
2205 (((FIX(0.50000) * r1 - FIX(0.41869) * g1 - \
2206 FIX(0.08131) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
2207
2208 static void opt_pad_color(const char *arg) {
2209 /* Input is expected to be six hex digits similar to
2210 how colors are expressed in html tags (but without the #) */
2211 int rgb = strtol(arg, NULL, 16);
2212 int r,g,b;
2213
2214 r = (rgb >> 16);
2215 g = ((rgb >> 8) & 255);
2216 b = (rgb & 255);
2217
2218 padcolor[0] = RGB_TO_Y(r,g,b);
2219 padcolor[1] = RGB_TO_U(r,g,b,0);
2220 padcolor[2] = RGB_TO_V(r,g,b,0);
2221 }
2222
2223 static void opt_frame_pad_top(const char *arg)
2224 {
2225 frame_padtop = atoi(arg);
2226 if (frame_padtop < 0) {
2227 fprintf(stderr, "Incorrect top pad size\n");
2228 exit(1);
2229 }
2230 if ((frame_padtop % 2) != 0) {
2231 fprintf(stderr, "Top pad size must be a multiple of 2\n");
2232 exit(1);
2233 }
2234 }
2235
2236 static void opt_frame_pad_bottom(const char *arg)
2237 {
2238 frame_padbottom = atoi(arg);
2239 if (frame_padbottom < 0) {
2240 fprintf(stderr, "Incorrect bottom pad size\n");
2241 exit(1);
2242 }
2243 if ((frame_padbottom % 2) != 0) {
2244 fprintf(stderr, "Bottom pad size must be a multiple of 2\n");
2245 exit(1);
2246 }
2247 }
2248
2249
2250 static void opt_frame_pad_left(const char *arg)
2251 {
2252 frame_padleft = atoi(arg);
2253 if (frame_padleft < 0) {
2254 fprintf(stderr, "Incorrect left pad size\n");
2255 exit(1);
2256 }
2257 if ((frame_padleft % 2) != 0) {
2258 fprintf(stderr, "Left pad size must be a multiple of 2\n");
2259 exit(1);
2260 }
2261 }
2262
2263
2264 static void opt_frame_pad_right(const char *arg)
2265 {
2266 frame_padright = atoi(arg);
2267 if (frame_padright < 0) {
2268 fprintf(stderr, "Incorrect right pad size\n");
2269 exit(1);
2270 }
2271 if ((frame_padright % 2) != 0) {
2272 fprintf(stderr, "Right pad size must be a multiple of 2\n");
2273 exit(1);
2274 }
2275 }
2276
2277
2278 static void opt_frame_pix_fmt(const char *arg)
2279 {
2280 frame_pix_fmt = avcodec_get_pix_fmt(arg);
2281 }
2282
2283 static void opt_frame_aspect_ratio(const char *arg)
2284 {
2285 int x = 0, y = 0;
2286 double ar = 0;
2287 const char *p;
2288
2289 p = strchr(arg, ':');
2290 if (p) {
2291 x = strtol(arg, (char **)&arg, 10);
2292 if (arg == p)
2293 y = strtol(arg+1, (char **)&arg, 10);
2294 if (x > 0 && y > 0)
2295 ar = (double)x / (double)y;
2296 } else
2297 ar = strtod(arg, (char **)&arg);
2298
2299 if (!ar) {
2300 fprintf(stderr, "Incorrect aspect ratio specification.\n");
2301 exit(1);
2302 }
2303 frame_aspect_ratio = ar;
2304 }
2305
2306 static void opt_qscale(const char *arg)
2307 {
2308 video_qscale = atof(arg);
2309 if (video_qscale <= 0 ||
2310 video_qscale > 255) {
2311 fprintf(stderr, "qscale must be > 0.0 and <= 255\n");
2312 exit(1);
2313 }
2314 }
2315
2316 static void opt_qdiff(const char *arg)
2317 {
2318 video_qdiff = atoi(arg);
2319 if (video_qdiff < 0 ||
2320 video_qdiff > 31) {
2321 fprintf(stderr, "qdiff must be >= 1 and <= 31\n");
2322 exit(1);
2323 }
2324 }
2325
2326 static void opt_packet_size(const char *arg)
2327 {
2328 packet_size= atoi(arg);
2329 }
2330
2331 static void opt_strict(const char *arg)
2332 {
2333 strict= atoi(arg);
2334 }
2335
2336 static void opt_top_field_first(const char *arg)
2337 {
2338 top_field_first= atoi(arg);
2339 }
2340
2341 static void opt_thread_count(const char *arg)
2342 {
2343 thread_count= atoi(arg);
2344 #if !defined(HAVE_THREADS)
2345 if (verbose >= 0)
2346 fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2347 #endif
2348 }
2349
2350 static void opt_audio_bitrate(const char *arg)
2351 {
2352 audio_bit_rate = atoi(arg) * 1000;
2353 }
2354
2355 static void opt_audio_rate(const char *arg)
2356 {
2357 audio_sample_rate = atoi(arg);
2358 }
2359
2360 static void opt_audio_channels(const char *arg)
2361 {
2362 audio_channels = atoi(arg);
2363 }
2364
2365 static void opt_video_device(const char *arg)
2366 {
2367 video_device = av_strdup(arg);
2368 }
2369
2370 static void opt_grab_device(const char *arg)
2371 {
2372 grab_device = av_strdup(arg);
2373 }
2374
2375 static void opt_video_channel(const char *arg)
2376 {
2377 video_channel = strtol(arg, NULL, 0);
2378 }
2379
2380 static void opt_video_standard(const char *arg)
2381 {
2382 video_standard = av_strdup(arg);
2383 }
2384
2385 static void opt_audio_device(const char *arg)
2386 {
2387 audio_device = av_strdup(arg);
2388 }
2389
2390 static void opt_codec(int *pstream_copy, int *pcodec_id,
2391 int codec_type, const char *arg)
2392 {
2393 AVCodec *p;
2394
2395 if (!strcmp(arg, "copy")) {
2396 *pstream_copy = 1;
2397 } else {
2398 p = first_avcodec;
2399 while (p) {
2400 if (!strcmp(p->name, arg) && p->type == codec_type)
2401 break;
2402 p = p->next;
2403 }
2404 if (p == NULL) {
2405 fprintf(stderr, "Unknown codec '%s'\n", arg);
2406 exit(1);
2407 } else {
2408 *pcodec_id = p->id;
2409 }
2410 }
2411 }
2412
2413 static void opt_audio_codec(const char *arg)
2414 {
2415 opt_codec(&audio_stream_copy, &audio_codec_id, CODEC_TYPE_AUDIO, arg);
2416 }
2417
2418 static void opt_audio_tag(const char *arg)
2419 {
2420 char *tail;
2421 audio_codec_tag= strtol(arg, &tail, 0);
2422
2423 if(!tail || *tail)
2424 audio_codec_tag= arg[0] + (arg[1]<<8) + (arg[2]<<16) + (arg[3]<<24);
2425 }
2426
2427 static void opt_video_tag(const char *arg)
2428 {
2429 char *tail;
2430 video_codec_tag= strtol(arg, &tail, 0);
2431
2432 if(!tail || *tail)
2433 video_codec_tag= arg[0] + (arg[1]<<8) + (arg[2]<<16) + (arg[3]<<24);
2434 }
2435
2436 static void add_frame_hooker(const char *arg)
2437 {
2438 int argc = 0;
2439 char *argv[64];
2440 int i;
2441 char *args = av_strdup(arg);
2442
2443 using_vhook = 1;
2444
2445 argv[0] = strtok(args, " ");
2446 while (argc < 62 && (argv[++argc] = strtok(NULL, " "))) {
2447 }
2448
2449 i = frame_hook_add(argc, argv);
2450
2451 if (i != 0) {
2452 fprintf(stderr, "Failed to add video hook function: %s\n", arg);
2453 exit(1);
2454 }
2455 }
2456
2457 const char *motion_str[] = {
2458 "zero",
2459 "full",
2460 "log",
2461 "phods",
2462 "epzs",
2463 "x1",
2464 "hex",
2465 "umh",
2466 "iter",
2467 NULL,
2468 };
2469
2470 static void opt_motion_estimation(const char *arg)
2471 {
2472 const char **p;
2473 p = motion_str;
2474 for(;;) {
2475 if (!*p) {
2476 fprintf(stderr, "Unknown motion estimation method '%s'\n", arg);
2477 exit(1);
2478 }
2479 if (!strcmp(*p, arg))
2480 break;
2481 p++;
2482 }
2483 me_method = (p - motion_str) + 1;
2484 }
2485
2486 static void opt_video_codec(const char *arg)
2487 {
2488 opt_codec(&video_stream_copy, &video_codec_id, CODEC_TYPE_VIDEO, arg);
2489 }
2490
2491 static void opt_subtitle_codec(const char *arg)
2492 {
2493 opt_codec(&subtitle_stream_copy, &subtitle_codec_id, CODEC_TYPE_SUBTITLE, arg);
2494 }
2495
2496 static void opt_map(const char *arg)
2497 {
2498 AVStreamMap *m;
2499 const char *p;
2500
2501 p = arg;
2502 m = &stream_maps[nb_stream_maps++];
2503
2504 m->file_index = strtol(arg, (char **)&p, 0);
2505 if (*p)
2506 p++;
2507
2508 m->stream_index = strtol(p, (char **)&p, 0);
2509 if (*p) {
2510 p++;
2511 m->sync_file_index = strtol(p, (char **)&p, 0);
2512 if (*p)
2513 p++;
2514 m->sync_stream_index = strtol(p, (char **)&p, 0);
2515 } else {
2516 m->sync_file_index = m->file_index;
2517 m->sync_stream_index = m->stream_index;
2518 }
2519 }
2520
2521 static void opt_map_meta_data(const char *arg)
2522 {
2523 AVMetaDataMap *m;
2524 const char *p;
2525
2526 p = arg;
2527 m = &meta_data_maps[nb_meta_data_maps++];
2528
2529 m->out_file = strtol(arg, (char **)&p, 0);
2530 if (*p)
2531 p++;
2532
2533 m->in_file = strtol(p, (char **)&p, 0);
2534 }
2535
2536 static void opt_recording_time(const char *arg)
2537 {
2538 recording_time = parse_date(arg, 1);
2539 }
2540
2541 static void opt_start_time(const char *arg)
2542 {
2543 start_time = parse_date(arg, 1);
2544 }
2545
2546 static void opt_rec_timestamp(const char *arg)
2547 {
2548 rec_timestamp = parse_date(arg, 0) / 1000000;
2549 }
2550
2551 static void opt_input_ts_offset(const char *arg)
2552 {
2553 input_ts_offset = parse_date(arg, 1);
2554 }
2555
2556 static void opt_input_file(const char *filename)
2557 {
2558 AVFormatContext *ic;
2559 AVFormatParameters params, *ap = &params;
2560 int err, i, ret, rfps, rfps_base;
2561 int64_t timestamp;
2562
2563 if (!strcmp(filename, "-"))
2564 filename = "pipe:";
2565
2566 using_stdin |= !strncmp(filename, "pipe:", 5) ||
2567 !strcmp( filename, "/dev/stdin" );
2568
2569 /* get default parameters from command line */
2570 ic = av_alloc_format_context();
2571
2572 memset(ap, 0, sizeof(*ap));
2573 ap->prealloced_context = 1;
2574 ap->sample_rate = audio_sample_rate;
2575 ap->channels = audio_channels;
2576 ap->time_base.den = frame_rate;
2577 ap->time_base.num = frame_rate_base;
2578 ap->width = frame_width + frame_padleft + frame_padright;
2579 ap->height = frame_height + frame_padtop + frame_padbottom;
2580 ap->pix_fmt = frame_pix_fmt;
2581 ap->device = grab_device;
2582 ap->channel = video_channel;
2583 ap->standard = video_standard;
2584 ap->video_codec_id = video_codec_id;
2585 ap->audio_codec_id = audio_codec_id;
2586 if(pgmyuv_compatibility_hack)
2587 ap->video_codec_id= CODEC_ID_PGMYUV;
2588
2589 for(i=0; i<opt_name_count; i++){
2590 AVOption *opt;
2591 double d= av_get_double(avformat_opts, opt_names[i], &opt);
2592 if(d==d && (opt->flags&AV_OPT_FLAG_DECODING_PARAM))
2593 av_set_double(ic, opt_names[i], d);
2594 }
2595 /* open the input file with generic libav function */
2596 err = av_open_input_file(&ic, filename, file_iformat, 0, ap);
2597 if (err < 0) {
2598 print_error(filename, err);
2599 exit(1);
2600 }
2601
2602 ic->loop_input = loop_input;
2603
2604 /* If not enough info to get the stream parameters, we decode the
2605 first frames to get it. (used in mpeg case for example) */
2606 ret = av_find_stream_info(ic);
2607 if (ret < 0 && verbose >= 0) {
2608 fprintf(stderr, "%s: could not find codec parameters\n", filename);
2609 exit(1);
2610 }
2611
2612 timestamp = start_time;
2613 /* add the stream start time */
2614 if (ic->start_time != AV_NOPTS_VALUE)
2615 timestamp += ic->start_time;
2616
2617 /* if seeking requested, we execute it */
2618 if (start_time != 0) {
2619 ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
2620 if (ret < 0) {
2621 fprintf(stderr, "%s: could not seek to position %0.3f\n",
2622 filename, (double)timestamp / AV_TIME_BASE);
2623 }
2624 /* reset seek info */
2625 start_time = 0;
2626 }
2627
2628 /* update the current parameters so that they match the one of the input stream */
2629 for(i=0;i<ic->nb_streams;i++) {
2630 int j;
2631 AVCodecContext *enc = ic->streams[i]->codec;
2632 #if defined(HAVE_THREADS)
2633 if(thread_count>1)
2634 avcodec_thread_init(enc, thread_count);
2635 #endif
2636 enc->thread_count= thread_count;
2637 switch(enc->codec_type) {
2638 case CODEC_TYPE_AUDIO:
2639 for(j=0; j<opt_name_count; j++){
2640 AVOption *opt;
2641 double d= av_get_double(avctx_opts, opt_names[j], &opt);
2642 if(d==d && (opt->flags&AV_OPT_FLAG_AUDIO_PARAM) && (opt->flags&AV_OPT_FLAG_DECODING_PARAM))
2643 av_set_double(enc, opt_names[j], d);
2644 }
2645 //fprintf(stderr, "\nInput Audio channels: %d", enc->channels);
2646 audio_channels = enc->channels;
2647 audio_sample_rate = enc->sample_rate;
2648 if(audio_disable)
2649 ic->streams[i]->discard= AVDISCARD_ALL;
2650 break;
2651 case CODEC_TYPE_VIDEO:
2652 for(j=0; j<opt_name_count; j++){
2653 AVOption *opt;
2654 double d= av_get_double(avctx_opts, opt_names[j], &opt);
2655 if(d==d && (opt->flags&AV_OPT_FLAG_VIDEO_PARAM) && (opt->flags&AV_OPT_FLAG_DECODING_PARAM))
2656 av_set_double(enc, opt_names[j], d);
2657 }
2658 frame_height = enc->height;
2659 frame_width = enc->width;
2660 frame_aspect_ratio = av_q2d(enc->sample_aspect_ratio) * enc->width / enc->height;
2661 frame_pix_fmt = enc->pix_fmt;
2662 rfps = ic->streams[i]->r_frame_rate.num;
2663 rfps_base = ic->streams[i]->r_frame_rate.den;
2664 if(enc->lowres) enc->flags |= CODEC_FLAG_EMU_EDGE;
2665 if(me_threshold)
2666 enc->debug |= FF_DEBUG_MV;
2667
2668 if (enc->time_base.den != rfps || enc->time_base.num != rfps_base) {
2669
2670 if (verbose >= 0)
2671 fprintf(stderr,"\nSeems that stream %d comes from film source: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
2672 i, (float)enc->time_base.den / enc->time_base.num, enc->time_base.den, enc->time_base.num,
2673
2674 (float)rfps / rfps_base, rfps, rfps_base);
2675 }
2676 /* update the current frame rate to match the stream frame rate */
2677 frame_rate = rfps;
2678 frame_rate_base = rfps_base;
2679
2680 enc->rate_emu = rate_emu;
2681 if(video_disable)
2682 ic->streams[i]->discard= AVDISCARD_ALL;
2683 else if(video_discard)
2684 ic->streams[i]->discard= video_discard;
2685 break;
2686 case CODEC_TYPE_DATA:
2687 break;
2688 case CODEC_TYPE_SUBTITLE:
2689 break;
2690 case CODEC_TYPE_UNKNOWN:
2691 break;
2692 default:
2693 av_abort();
2694 }
2695 }
2696
2697 input_files[nb_input_files] = ic;
2698 input_files_ts_offset[nb_input_files] = input_ts_offset - (copy_ts ? 0 : timestamp);
2699 /* dump the file content */
2700 if (verbose >= 0)
2701 dump_format(ic, nb_input_files, filename, 0);
2702
2703 nb_input_files++;
2704 file_iformat = NULL;
2705 file_oformat = NULL;
2706
2707 grab_device = NULL;
2708 video_channel = 0;
2709
2710 rate_emu = 0;
2711 }
2712
2713 static void opt_grab(const char *arg)
2714 {
2715 file_iformat = av_find_input_format(arg);
2716 opt_input_file("");
2717 }
2718
2719 static void check_audio_video_inputs(int *has_video_ptr, int *has_audio_ptr)
2720 {
2721 int has_video, has_audio, i, j;
2722 AVFormatContext *ic;
2723
2724 has_video = 0;
2725 has_audio = 0;
2726 for(j=0;j<nb_input_files;j++) {
2727 ic = input_files[j];
2728 for(i=0;i<ic->nb_streams;i++) {
2729 AVCodecContext *enc = ic->streams[i]->codec;
2730 switch(enc->codec_type) {
2731 case CODEC_TYPE_AUDIO:
2732 has_audio = 1;
2733 break;
2734 case CODEC_TYPE_VIDEO:
2735 has_video = 1;
2736 break;
2737 case CODEC_TYPE_DATA:
2738 case CODEC_TYPE_UNKNOWN:
2739 case CODEC_TYPE_SUBTITLE:
2740 break;
2741 default:
2742 av_abort();
2743 }
2744 }
2745 }
2746 *has_video_ptr = has_video;
2747 *has_audio_ptr = has_audio;
2748 }
2749
2750 static void new_video_stream(AVFormatContext *oc)
2751 {
2752 AVStream *st;
2753 AVCodecContext *video_enc;
2754 int codec_id;
2755
2756 st = av_new_stream(oc, oc->nb_streams);
2757 if (!st) {
2758 fprintf(stderr, "Could not alloc stream\n");
2759 exit(1);
2760 }
2761 bitstream_filters[nb_output_files][oc->nb_streams - 1]= video_bitstream_filters;
2762 video_bitstream_filters= NULL;
2763
2764 #if defined(HAVE_THREADS)
2765 if(thread_count>1)
2766 avcodec_thread_init(st->codec, thread_count);
2767 #endif
2768
2769 video_enc = st->codec;
2770
2771 if(video_codec_tag)
2772 video_enc->codec_tag= video_codec_tag;
2773
2774 if( (video_global_header&1)
2775 || (video_global_header==0 && (oc->oformat->flags & AVFMT_GLOBALHEADER))){
2776 video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
2777 avctx_opts->flags|= CODEC_FLAG_GLOBAL_HEADER;
2778 }
2779 if(video_global_header&2){
2780 video_enc->flags2 |= CODEC_FLAG2_LOCAL_HEADER;
2781 avctx_opts->flags2|= CODEC_FLAG2_LOCAL_HEADER;
2782 }
2783
2784 if (video_stream_copy) {
2785 st->stream_copy = 1;
2786 video_enc->codec_type = CODEC_TYPE_VIDEO;
2787 } else {
2788 char *p;
2789 int i;
2790 AVCodec *codec;
2791
2792 codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, CODEC_TYPE_VIDEO);
2793 if (video_codec_id != CODEC_ID_NONE)
2794 codec_id = video_codec_id;
2795
2796 video_enc->codec_id = codec_id;
2797 codec = avcodec_find_encoder(codec_id);
2798
2799 for(i=0; i<opt_name_count; i++){
2800 AVOption *opt;
2801 double d= av_get_double(avctx_opts, opt_names[i], &opt);
2802 if(d==d && (opt->flags&AV_OPT_FLAG_VIDEO_PARAM) && (opt->flags&AV_OPT_FLAG_ENCODING_PARAM))
2803 av_set_double(video_enc, opt_names[i], d);
2804 }
2805
2806 video_enc->time_base.den = frame_rate;
2807 video_enc->time_base.num = frame_rate_base;
2808 if(codec && codec->supported_framerates){
2809 const AVRational *p= codec->supported_framerates;
2810 AVRational req= (AVRational){frame_rate, frame_rate_base};
2811 const AVRational *best=NULL;
2812 AVRational best_error= (AVRational){INT_MAX, 1};
2813 for(; p->den!=0; p++){
2814 AVRational error= av_sub_q(req, *p);
2815 if(error.num <0) error.num *= -1;
2816 if(av_cmp_q(error, best_error) < 0){
2817 best_error= error;
2818 best= p;
2819 }
2820 }
2821 video_enc->time_base.den= best->num;
2822 video_enc->time_base.num= best->den;
2823 }
2824
2825 video_enc->width = frame_width + frame_padright + frame_padleft;
2826 video_enc->height = frame_height + frame_padtop + frame_padbottom;
2827 video_enc->sample_aspect_ratio = av_d2q(frame_aspect_ratio*video_enc->height/video_enc->width, 255);
2828 video_enc->pix_fmt = frame_pix_fmt;
2829
2830 if(codec && codec->pix_fmts){
2831 const enum PixelFormat *p= codec->pix_fmts;
2832 for(; *p!=-1; p++){
2833 if(*p == video_enc->pix_fmt)
2834 break;
2835 }
2836 if(*p == -1)
2837 video_enc->pix_fmt = codec->pix_fmts[0];
2838 }
2839
2840 if (intra_only)
2841 video_enc->gop_size = 0;
2842 if (video_qscale || same_quality) {
2843 video_enc->flags |= CODEC_FLAG_QSCALE;
2844 video_enc->global_quality=
2845 st->quality = FF_QP2LAMBDA * video_qscale;
2846 }
2847
2848 if(intra_matrix)
2849 video_enc->intra_matrix = intra_matrix;
2850 if(inter_matrix)
2851 video_enc->inter_matrix = inter_matrix;
2852
2853 video_enc->max_qdiff = video_qdiff;
2854 video_enc->rc_eq = video_rc_eq;
2855 video_enc->thread_count = thread_count;
2856 p= video_rc_override_string;
2857 for(i=0; p; i++){
2858 int start, end, q;
2859 int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
2860 if(e!=3){
2861 fprintf(stderr, "error parsing rc_override\n");
2862 exit(1);
2863 }
2864 video_enc->rc_override=
2865 av_realloc(video_enc->rc_override,
2866 sizeof(RcOverride)*(i+1));
2867 video_enc->rc_override[i].start_frame= start;
2868 video_enc->rc_override[i].end_frame = end;
2869 if(q>0){
2870 video_enc->rc_override[i].qscale= q;
2871 video_enc->rc_override[i].quality_factor= 1.0;
2872 }
2873 else{
2874 video_enc->rc_override[i].qscale= 0;
2875 video_enc->rc_override[i].quality_factor= -q/100.0;
2876 }
2877 p= strchr(p, '/');
2878 if(p) p++;
2879 }
2880 video_enc->rc_override_count=i;
2881 video_enc->rc_initial_buffer_occupancy = video_enc->rc_buffer_size*3/4;
2882 video_enc->me_threshold= me_threshold;
2883 video_enc->intra_dc_precision= intra_dc_precision - 8;
2884 video_enc->strict_std_compliance = strict;
2885
2886 if(packet_size){
2887 video_enc->rtp_mode= 1;
2888 video_enc->rtp_payload_size= packet_size;
2889 }
2890
2891 if (do_psnr)
2892 video_enc->flags|= CODEC_FLAG_PSNR;
2893
2894 video_enc->me_method = me_method;
2895
2896 /* two pass mode */
2897 if (do_pass) {
2898 if (do_pass == 1) {
2899 video_enc->flags |= CODEC_FLAG_PASS1;
2900 } else {
2901 video_enc->flags |= CODEC_FLAG_PASS2;
2902 }
2903 }
2904 }
2905
2906 /* reset some key parameters */
2907 video_disable = 0;
2908 video_codec_id = CODEC_ID_NONE;
2909 video_stream_copy = 0;
2910 }
2911
2912 static void new_audio_stream(AVFormatContext *oc)
2913 {
2914 AVStream *st;
2915 AVCodecContext *audio_enc;
2916 int codec_id, i;
2917
2918 st = av_new_stream(oc, oc->nb_streams);
2919 if (!st) {
2920 fprintf(stderr, "Could not alloc stream\n");
2921 exit(1);
2922 }
2923
2924 bitstream_filters[nb_output_files][oc->nb_streams - 1]= audio_bitstream_filters;
2925 audio_bitstream_filters= NULL;
2926
2927 #if defined(HAVE_THREADS)
2928 if(thread_count>1)
2929 avcodec_thread_init(st->codec, thread_count);
2930 #endif
2931
2932 audio_enc = st->codec;
2933 audio_enc->codec_type = CODEC_TYPE_AUDIO;
2934 audio_enc->strict_std_compliance = strict;
2935
2936 if(audio_codec_tag)
2937 audio_enc->codec_tag= audio_codec_tag;
2938
2939 if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
2940 audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
2941 avctx_opts->flags|= CODEC_FLAG_GLOBAL_HEADER;
2942 }
2943 if (audio_stream_copy) {
2944 st->stream_copy = 1;
2945 audio_enc->channels = audio_channels;
2946 } else {
2947 codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, CODEC_TYPE_AUDIO);
2948
2949 for(i=0; i<opt_name_count; i++){
2950 AVOption *opt;
2951 double d= av_get_double(avctx_opts, opt_names[i], &opt);
2952 if(d==d && (opt->flags&AV_OPT_FLAG_AUDIO_PARAM) && (opt->flags&AV_OPT_FLAG_ENCODING_PARAM))
2953 av_set_double(audio_enc, opt_names[i], d);
2954 }
2955
2956 if (audio_codec_id != CODEC_ID_NONE)
2957 codec_id = audio_codec_id;
2958 audio_enc->codec_id = codec_id;
2959
2960 audio_enc->bit_rate = audio_bit_rate;
2961 if (audio_qscale > QSCALE_NONE) {
2962 audio_enc->flags |= CODEC_FLAG_QSCALE;
2963 audio_enc->global_quality = st->quality = FF_QP2LAMBDA * audio_qscale;
2964 }
2965 audio_enc->thread_count = thread_count;
2966 /* For audio codecs other than AC3 or DTS we limit */
2967 /* the number of coded channels to stereo */
2968 if (audio_channels > 2 && codec_id != CODEC_ID_AC3
2969 && codec_id != CODEC_ID_DTS) {
2970 audio_enc->channels = 2;
2971 } else
2972 audio_enc->channels = audio_channels;
2973 }
2974 audio_enc->sample_rate = audio_sample_rate;
2975 audio_enc->time_base= (AVRational){1, audio_sample_rate};
2976 if (audio_language) {
2977 pstrcpy(st->language, sizeof(st->language), audio_language);
2978 av_free(audio_language);
2979 audio_language = NULL;
2980 }
2981
2982 /* reset some key parameters */
2983 audio_disable = 0;
2984 audio_codec_id = CODEC_ID_NONE;
2985 audio_stream_copy = 0;
2986 }
2987
2988 static void opt_new_subtitle_stream(void)
2989 {
2990 AVFormatContext *oc;
2991 AVStream *st;
2992 AVCodecContext *subtitle_enc;
2993 int i;
2994
2995 if (nb_output_files <= 0) {
2996 fprintf(stderr, "At least one output file must be specified\n");
2997 exit(1);
2998 }
2999 oc = output_files[nb_output_files - 1];
3000
3001 st = av_new_stream(oc, oc->nb_streams);
3002 if (!st) {
3003 fprintf(stderr, "Could not alloc stream\n");
3004 exit(1);
3005 }
3006
3007 subtitle_enc = st->codec;
3008 subtitle_enc->codec_type = CODEC_TYPE_SUBTITLE;
3009 if (subtitle_stream_copy) {
3010 st->stream_copy = 1;
3011 } else {
3012 for(i=0; i<opt_name_count; i++){
3013 AVOption *opt;
3014 double d= av_get_double(avctx_opts, opt_names[i], &opt);
3015 if(d==d && (opt->flags&AV_OPT_FLAG_SUBTITLE_PARAM) && (opt->flags&AV_OPT_FLAG_ENCODING_PARAM))
3016 av_set_double(subtitle_enc, opt_names[i], d);
3017 }
3018 subtitle_enc->codec_id = subtitle_codec_id;
3019 }
3020
3021 if (subtitle_language) {
3022 pstrcpy(st->language, sizeof(st->language), subtitle_language);
3023 av_free(subtitle_language);
3024 subtitle_language = NULL;
3025 }
3026
3027 subtitle_codec_id = CODEC_ID_NONE;
3028 subtitle_stream_copy = 0;
3029 }
3030
3031 static void opt_new_audio_stream(void)
3032 {
3033 AVFormatContext *oc;
3034 if (nb_output_files <= 0) {
3035 fprintf(stderr, "At least one output file must be specified\n");
3036 exit(1);
3037 }
3038 oc = output_files[nb_output_files - 1];
3039 new_audio_stream(oc);
3040 }
3041
3042 static void opt_new_video_stream(void)
3043 {
3044 AVFormatContext *oc;
3045 if (nb_output_files <= 0) {
3046 fprintf(stderr, "At least one output file must be specified\n");
3047 exit(1);
3048 }
3049 oc = output_files[nb_output_files - 1];
3050 new_video_stream(oc);
3051 }
3052
3053 static void opt_output_file(const char *filename)
3054 {
3055 AVFormatContext *oc;
3056 int use_video, use_audio, input_has_video, input_has_audio, i;
3057 AVFormatParameters params, *ap = &params;
3058
3059 if (!strcmp(filename, "-"))
3060 filename = "pipe:";
3061
3062 oc = av_alloc_format_context();
3063
3064 if (!file_oformat) {
3065 file_oformat = guess_format(NULL, filename, NULL);
3066 if (!file_oformat) {
3067 fprintf(stderr, "Unable for find a suitable output format for '%s'\n",
3068 filename);
3069 exit(1);
3070 }
3071 }
3072
3073 oc->oformat = file_oformat;
3074 pstrcpy(oc->filename, sizeof(oc->filename), filename);
3075
3076 if (!strcmp(file_oformat->name, "ffm") &&
3077 strstart(filename, "http:", NULL)) {
3078 /* special case for files sent to ffserver: we get the stream
3079 parameters from ffserver */
3080 if (read_ffserver_streams(oc, filename) < 0) {
3081 fprintf(stderr, "Could not read stream parameters from '%s'\n", filename);
3082 exit(1);
3083 }
3084 } else {
3085 use_video = file_oformat->video_codec != CODEC_ID_NONE || video_stream_copy || video_codec_id != CODEC_ID_NONE;
3086 use_audio = file_oformat->audio_codec != CODEC_ID_NONE || audio_stream_copy || audio_codec_id != CODEC_ID_NONE;
3087
3088 /* disable if no corresponding type found and at least one
3089 input file */
3090 if (nb_input_files > 0) {
3091 check_audio_video_inputs(&input_has_video, &input_has_audio);
3092 if (!input_has_video)
3093 use_video = 0;
3094 if (!input_has_audio)
3095 use_audio = 0;
3096 }
3097
3098 /* manual disable */
3099 if (audio_disable) {
3100 use_audio = 0;
3101 }
3102 if (video_disable) {
3103 use_video = 0;
3104 }
3105
3106 if (use_video) {
3107 new_video_stream(oc);
3108 }
3109
3110 if (use_audio) {
3111 new_audio_stream(oc);
3112 }
3113
3114 oc->timestamp = rec_timestamp;
3115
3116 if (str_title)
3117 pstrcpy(oc->title, sizeof(oc->title), str_title);
3118 if (str_author)
3119 pstrcpy(oc->author, sizeof(oc->author), str_author);
3120 if (str_copyright)
3121 pstrcpy(oc->copyright, sizeof(oc->copyright), str_copyright);
3122 if (str_comment)
3123 pstrcpy(oc->comment, sizeof(oc->comment), str_comment);
3124 if (str_album)
3125 pstrcpy(oc->album, sizeof(oc->album), str_album);
3126 }
3127
3128 output_files[nb_output_files++] = oc;
3129
3130 /* check filename in case of an image number is expected */
3131 if (oc->oformat->flags & AVFMT_NEEDNUMBER) {
3132 if (!av_filename_number_test(oc->filename)) {
3133 print_error(oc->filename, AVERROR_NUMEXPECTED);
3134 exit(1);
3135 }
3136 }
3137
3138 if (!(oc->oformat->flags & AVFMT_NOFILE)) {
3139 /* test if it already exists to avoid loosing precious files */
3140 if (!file_overwrite &&
3141 (strchr(filename, ':') == NULL ||
3142 strstart(filename, "file:", NULL))) {
3143 if (url_exist(filename)) {
3144 int c;
3145
3146 if ( !using_stdin ) {
3147 fprintf(stderr,"File '%s' already exists. Overwrite ? [y/N] ", filename);
3148 fflush(stderr);
3149 c = getchar();
3150 if (toupper(c) != 'Y') {
3151 fprintf(stderr, "Not overwriting - exiting\n");
3152 exit(1);
3153 }
3154 }
3155 else {
3156 fprintf(stderr,"File '%s' already exists. Exiting.\n", filename);
3157 exit(1);
3158 }
3159 }
3160 }
3161
3162 /* open the file */
3163 if (url_fopen(&oc->pb, filename, URL_WRONLY) < 0) {
3164 fprintf(stderr, "Could not open '%s'\n", filename);
3165 exit(1);
3166 }
3167 }
3168
3169 memset(ap, 0, sizeof(*ap));
3170 if (av_set_parameters(oc, ap) < 0) {
3171 fprintf(stderr, "%s: Invalid encoding parameters\n",
3172 oc->filename);
3173 exit(1);
3174 }
3175
3176 oc->preload= (int)(mux_preload*AV_TIME_BASE);
3177 oc->max_delay= (int)(mux_max_delay*AV_TIME_BASE);
3178 oc->loop_output = loop_output;
3179
3180 for(i=0; i<opt_name_count; i++){
3181 AVOption *opt;
3182 double d = av_get_double(avformat_opts, opt_names[i], &opt);
3183 if(d==d && (opt->flags&AV_OPT_FLAG_ENCODING_PARAM))
3184 av_set_double(oc, opt_names[i], d);
3185 }
3186
3187 /* reset some options */
3188 file_oformat = NULL;
3189 file_iformat = NULL;
3190 }
3191
3192 /* prepare dummy protocols for grab */
3193 static void prepare_grab(void)
3194 {
3195 int has_video, has_audio, i, j;
3196 AVFormatContext *oc;
3197 AVFormatContext *ic;
3198 AVFormatParameters vp1, *vp = &vp1;
3199 AVFormatParameters ap1, *ap = &ap1;
3200
3201 /* see if audio/video inputs are needed */
3202 has_video = 0;
3203 has_audio = 0;
3204 memset(ap, 0, sizeof(*ap));
3205 memset(vp, 0, sizeof(*vp));
3206 vp->time_base.num= 1;
3207 for(j=0;j<nb_output_files;j++) {
3208 oc = output_files[j];
3209 for(i=0;i<oc->nb_streams;i++) {
3210 AVCodecContext *enc = oc->streams[i]->codec;
3211 switch(enc->codec_type) {
3212 case CODEC_TYPE_AUDIO:
3213 if (enc->sample_rate > ap->sample_rate)
3214 ap->sample_rate = enc->sample_rate;
3215 if (enc->channels > ap->channels)
3216 ap->channels = enc->channels;
3217 has_audio = 1;
3218 break;
3219 case CODEC_TYPE_VIDEO:
3220 if (enc->width > vp->width)
3221 vp->width = enc->width;
3222 if (enc->height > vp->height)
3223 vp->height = enc->height;
3224
3225 if (vp->time_base.num*(int64_t)enc->time_base.den > enc->time_base.num*(int64_t)vp->time_base.den){
3226 vp->time_base = enc->time_base;
3227 vp->width += frame_leftBand + frame_rightBand;
3228 vp->width -= (frame_padleft + frame_padright);
3229 vp->height += frame_topBand + frame_bottomBand;
3230 vp->height -= (frame_padtop + frame_padbottom);
3231 }
3232 has_video = 1;
3233 break;
3234 default:
3235 av_abort();
3236 }
3237 }
3238 }
3239
3240 if (has_video == 0 && has_audio == 0) {
3241 fprintf(stderr, "Output file must have at least one audio or video stream\n");
3242 exit(1);
3243 }
3244
3245 if (has_video) {
3246 AVInputFormat *fmt1;
3247 fmt1 = av_find_input_format(video_grab_format);
3248 vp->device = video_device;
3249 vp->channel = video_channel;
3250 vp->standard = video_standard;
3251 vp->pix_fmt = frame_pix_fmt;
3252 if (av_open_input_file(&ic, "", fmt1, 0, vp) < 0) {
3253 fprintf(stderr, "Could not find video grab device\n");
3254 exit(1);
3255 }
3256 /* If not enough info to get the stream parameters, we decode the
3257 first frames to get it. */
3258 if ((ic->ctx_flags & AVFMTCTX_NOHEADER) && av_find_stream_info(ic) < 0) {
3259 fprintf(stderr, "Could not find video grab parameters\n");