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Add missing newlines at end of file.
[libav.git] / ffmpeg.c
1 /*
2 * FFmpeg main
3 * Copyright (c) 2000-2003 Fabrice Bellard
4 *
5 * This library is free software; you can redistribute it and/or
6 * modify it under the terms of the GNU Lesser General Public
7 * License as published by the Free Software Foundation; either
8 * version 2 of the License, or (at your option) any later version.
9 *
10 * This library is distributed in the hope that it will be useful,
11 * but WITHOUT ANY WARRANTY; without even the implied warranty of
12 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
13 * Lesser General Public License for more details.
14 *
15 * You should have received a copy of the GNU Lesser General Public
16 * License along with this library; if not, write to the Free Software
17 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
18 */
19 #define HAVE_AV_CONFIG_H
20 #include <limits.h>
21 #include "avformat.h"
22 #include "framehook.h"
23 #include "dsputil.h"
24 #include "opt.h"
25
26 #ifndef CONFIG_WIN32
27 #include <unistd.h>
28 #include <fcntl.h>
29 #include <sys/ioctl.h>
30 #include <sys/time.h>
31 #include <termios.h>
32 #include <sys/resource.h>
33 #include <signal.h>
34 #endif
35 #ifdef CONFIG_OS2
36 #include <sys/types.h>
37 #include <sys/select.h>
38 #include <stdlib.h>
39 #endif
40 #undef time //needed because HAVE_AV_CONFIG_H is defined on top
41 #include <time.h>
42
43 #include "cmdutils.h"
44
45 #undef NDEBUG
46 #include <assert.h>
47
48 #if !defined(INFINITY) && defined(HUGE_VAL)
49 #define INFINITY HUGE_VAL
50 #endif
51
52 /* select an input stream for an output stream */
53 typedef struct AVStreamMap {
54 int file_index;
55 int stream_index;
56 int sync_file_index;
57 int sync_stream_index;
58 } AVStreamMap;
59
60 /** select an input file for an output file */
61 typedef struct AVMetaDataMap {
62 int out_file;
63 int in_file;
64 } AVMetaDataMap;
65
66 extern const OptionDef options[];
67
68 static void show_help(void);
69 static void show_license(void);
70 static int opt_default(const char *opt, const char *arg);
71
72 #define MAX_FILES 20
73
74 static AVFormatContext *input_files[MAX_FILES];
75 static int64_t input_files_ts_offset[MAX_FILES];
76 static int nb_input_files = 0;
77
78 static AVFormatContext *output_files[MAX_FILES];
79 static int nb_output_files = 0;
80
81 static AVStreamMap stream_maps[MAX_FILES];
82 static int nb_stream_maps;
83
84 static AVMetaDataMap meta_data_maps[MAX_FILES];
85 static int nb_meta_data_maps;
86
87 static AVInputFormat *file_iformat;
88 static AVOutputFormat *file_oformat;
89 static AVImageFormat *image_format;
90 static int frame_width = 0;
91 static int frame_height = 0;
92 static float frame_aspect_ratio = 0;
93 static enum PixelFormat frame_pix_fmt = PIX_FMT_NONE;
94 static int frame_padtop = 0;
95 static int frame_padbottom = 0;
96 static int frame_padleft = 0;
97 static int frame_padright = 0;
98 static int padcolor[3] = {16,128,128}; /* default to black */
99 static int frame_topBand = 0;
100 static int frame_bottomBand = 0;
101 static int frame_leftBand = 0;
102 static int frame_rightBand = 0;
103 static int max_frames[4] = {INT_MAX, INT_MAX, INT_MAX, INT_MAX};
104 static int frame_rate = 25;
105 static int frame_rate_base = 1;
106 static int video_bit_rate = 200*1000;
107 static int video_bit_rate_tolerance = 4000*1000;
108 static float video_qscale = 0;
109 static int video_qmin = 2;
110 static int video_qmax = 31;
111 static int video_lmin = 2*FF_QP2LAMBDA;
112 static int video_lmax = 31*FF_QP2LAMBDA;
113 static int video_mb_lmin = 2*FF_QP2LAMBDA;
114 static int video_mb_lmax = 31*FF_QP2LAMBDA;
115 static int video_qdiff = 3;
116 static float video_qblur = 0.5;
117 static float video_qsquish = 0.0;
118 static float video_qcomp = 0.5;
119 static uint16_t *intra_matrix = NULL;
120 static uint16_t *inter_matrix = NULL;
121 #if 0 //experimental, (can be removed)
122 static float video_rc_qsquish=1.0;
123 static float video_rc_qmod_amp=0;
124 static int video_rc_qmod_freq=0;
125 #endif
126 static char *video_rc_override_string=NULL;
127 static char *video_rc_eq="tex^qComp";
128 static int video_rc_buffer_size=0;
129 static float video_rc_buffer_aggressivity=1.0;
130 static int video_rc_max_rate=0;
131 static int video_rc_min_rate=0;
132 static float video_rc_initial_cplx=0;
133 static float video_b_qfactor = 1.25;
134 static float video_b_qoffset = 1.25;
135 static float video_i_qfactor = -0.8;
136 static float video_i_qoffset = 0.0;
137 static int video_intra_quant_bias= FF_DEFAULT_QUANT_BIAS;
138 static int video_inter_quant_bias= FF_DEFAULT_QUANT_BIAS;
139 static int me_method = ME_EPZS;
140 static int video_disable = 0;
141 static int video_discard = 0;
142 static int video_codec_id = CODEC_ID_NONE;
143 static int video_codec_tag = 0;
144 static int same_quality = 0;
145 static int b_frames = 0;
146 static int pre_me = 0;
147 static int do_deinterlace = 0;
148 static int workaround_bugs = FF_BUG_AUTODETECT;
149 static int packet_size = 0;
150 static int error_rate = 0;
151 static int strict = 0;
152 static int top_field_first = -1;
153 static int sc_threshold = 0;
154 static int me_threshold = 0;
155 static int mb_threshold = 0;
156 static int intra_dc_precision = 8;
157 static int me_penalty_compensation= 256;
158 static int frame_skip_threshold= 0;
159 static int frame_skip_factor= 0;
160 static int frame_skip_exp= 0;
161 extern int loop_input; /* currently a hack */
162 static int loop_output = AVFMT_NOOUTPUTLOOP;
163 static int genpts = 0;
164 static int qp_hist = 0;
165
166 static int gop_size = 12;
167 static int intra_only = 0;
168 static int audio_sample_rate = 44100;
169 static int audio_bit_rate = 64000;
170 #define QSCALE_NONE -99999
171 static float audio_qscale = QSCALE_NONE;
172 static int audio_disable = 0;
173 static int audio_channels = 1;
174 static int audio_codec_id = CODEC_ID_NONE;
175 static int audio_codec_tag = 0;
176 static char *audio_language = NULL;
177
178 static int subtitle_codec_id = CODEC_ID_NONE;
179 static char *subtitle_language = NULL;
180
181 static int mux_rate= 0;
182 static int mux_packet_size= 0;
183 static float mux_preload= 0.5;
184 static float mux_max_delay= 0.7;
185
186 static int64_t recording_time = 0;
187 static int64_t start_time = 0;
188 static int64_t rec_timestamp = 0;
189 static int64_t input_ts_offset = 0;
190 static int file_overwrite = 0;
191 static char *str_title = NULL;
192 static char *str_author = NULL;
193 static char *str_copyright = NULL;
194 static char *str_comment = NULL;
195 static int do_benchmark = 0;
196 static int do_hex_dump = 0;
197 static int do_pkt_dump = 0;
198 static int do_psnr = 0;
199 static int do_vstats = 0;
200 static int do_pass = 0;
201 static char *pass_logfilename = NULL;
202 static int audio_stream_copy = 0;
203 static int video_stream_copy = 0;
204 static int subtitle_stream_copy = 0;
205 static int video_sync_method= 1;
206 static int audio_sync_method= 0;
207 static int copy_ts= 0;
208 static int opt_shortest = 0; //
209 static int video_global_header = 0;
210
211 static int rate_emu = 0;
212
213 #ifdef CONFIG_BKTR
214 static char *video_grab_format = "bktr";
215 #else
216 #ifdef CONFIG_VIDEO4LINUX2
217 static char *video_grab_format = "video4linux2";
218 #else
219 static char *video_grab_format = "video4linux";
220 #endif
221 #endif
222 static char *video_device = NULL;
223 static char *grab_device = NULL;
224 static int video_channel = 0;
225 static char *video_standard = "ntsc";
226
227 static char *audio_grab_format = "audio_device";
228 static char *audio_device = NULL;
229 static int audio_volume = 256;
230
231 static int using_stdin = 0;
232 static int using_vhook = 0;
233 static int verbose = 1;
234 static int thread_count= 1;
235 static int q_pressed = 0;
236 static int me_range = 0;
237 static int64_t video_size = 0;
238 static int64_t audio_size = 0;
239 static int64_t extra_size = 0;
240 static int nb_frames_dup = 0;
241 static int nb_frames_drop = 0;
242 static int input_sync;
243 static int limit_filesize = 0; //
244
245 static int pgmyuv_compatibility_hack=0;
246 static int dts_delta_threshold = 10;
247
248 const char **opt_names=NULL;
249 int opt_name_count=0;
250 AVCodecContext *avctx_opts;
251
252
253 #define DEFAULT_PASS_LOGFILENAME "ffmpeg2pass"
254
255 struct AVInputStream;
256
257 typedef struct AVOutputStream {
258 int file_index; /* file index */
259 int index; /* stream index in the output file */
260 int source_index; /* AVInputStream index */
261 AVStream *st; /* stream in the output file */
262 int encoding_needed; /* true if encoding needed for this stream */
263 int frame_number;
264 /* input pts and corresponding output pts
265 for A/V sync */
266 //double sync_ipts; /* dts from the AVPacket of the demuxer in second units */
267 struct AVInputStream *sync_ist; /* input stream to sync against */
268 int64_t sync_opts; /* output frame counter, could be changed to some true timestamp */ //FIXME look at frame_number
269 /* video only */
270 int video_resample;
271 AVFrame pict_tmp; /* temporary image for resampling */
272 ImgReSampleContext *img_resample_ctx; /* for image resampling */
273
274 int video_crop;
275 int topBand; /* cropping area sizes */
276 int leftBand;
277
278 int video_pad;
279 int padtop; /* padding area sizes */
280 int padbottom;
281 int padleft;
282 int padright;
283
284 /* audio only */
285 int audio_resample;
286 ReSampleContext *resample; /* for audio resampling */
287 FifoBuffer fifo; /* for compression: one audio fifo per codec */
288 FILE *logfile;
289 } AVOutputStream;
290
291 typedef struct AVInputStream {
292 int file_index;
293 int index;
294 AVStream *st;
295 int discard; /* true if stream data should be discarded */
296 int decoding_needed; /* true if the packets must be decoded in 'raw_fifo' */
297 int64_t sample_index; /* current sample */
298
299 int64_t start; /* time when read started */
300 unsigned long frame; /* current frame */
301 int64_t next_pts; /* synthetic pts for cases where pkt.pts
302 is not defined */
303 int64_t pts; /* current pts */
304 int is_start; /* is 1 at the start and after a discontinuity */
305 } AVInputStream;
306
307 typedef struct AVInputFile {
308 int eof_reached; /* true if eof reached */
309 int ist_index; /* index of first stream in ist_table */
310 int buffer_size; /* current total buffer size */
311 int buffer_size_max; /* buffer size at which we consider we can stop
312 buffering */
313 int nb_streams; /* nb streams we are aware of */
314 } AVInputFile;
315
316 #ifndef CONFIG_WIN32
317
318 /* init terminal so that we can grab keys */
319 static struct termios oldtty;
320
321 static void term_exit(void)
322 {
323 tcsetattr (0, TCSANOW, &oldtty);
324 }
325
326 static volatile sig_atomic_t received_sigterm = 0;
327
328 static void
329 sigterm_handler(int sig)
330 {
331 received_sigterm = sig;
332 term_exit();
333 }
334
335 static void term_init(void)
336 {
337 struct termios tty;
338
339 tcgetattr (0, &tty);
340 oldtty = tty;
341
342 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
343 |INLCR|IGNCR|ICRNL|IXON);
344 tty.c_oflag |= OPOST;
345 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
346 tty.c_cflag &= ~(CSIZE|PARENB);
347 tty.c_cflag |= CS8;
348 tty.c_cc[VMIN] = 1;
349 tty.c_cc[VTIME] = 0;
350
351 tcsetattr (0, TCSANOW, &tty);
352
353 signal(SIGINT , sigterm_handler); /* Interrupt (ANSI). */
354 signal(SIGQUIT, sigterm_handler); /* Quit (POSIX). */
355 signal(SIGTERM, sigterm_handler); /* Termination (ANSI). */
356 /*
357 register a function to be called at normal program termination
358 */
359 atexit(term_exit);
360 #ifdef CONFIG_BEOS_NETSERVER
361 fcntl(0, F_SETFL, fcntl(0, F_GETFL) | O_NONBLOCK);
362 #endif
363 }
364
365 /* read a key without blocking */
366 static int read_key(void)
367 {
368 int n = 1;
369 unsigned char ch;
370 #ifndef CONFIG_BEOS_NETSERVER
371 struct timeval tv;
372 fd_set rfds;
373
374 FD_ZERO(&rfds);
375 FD_SET(0, &rfds);
376 tv.tv_sec = 0;
377 tv.tv_usec = 0;
378 n = select(1, &rfds, NULL, NULL, &tv);
379 #endif
380 if (n > 0) {
381 n = read(0, &ch, 1);
382 if (n == 1)
383 return ch;
384
385 return n;
386 }
387 return -1;
388 }
389
390 static int decode_interrupt_cb(void)
391 {
392 return q_pressed || (q_pressed = read_key() == 'q');
393 }
394
395 #else
396
397 static volatile int received_sigterm = 0;
398
399 /* no interactive support */
400 static void term_exit(void)
401 {
402 }
403
404 static void term_init(void)
405 {
406 }
407
408 static int read_key(void)
409 {
410 return 0;
411 }
412
413 #endif
414
415 static int read_ffserver_streams(AVFormatContext *s, const char *filename)
416 {
417 int i, err;
418 AVFormatContext *ic;
419
420 err = av_open_input_file(&ic, filename, NULL, FFM_PACKET_SIZE, NULL);
421 if (err < 0)
422 return err;
423 /* copy stream format */
424 s->nb_streams = ic->nb_streams;
425 for(i=0;i<ic->nb_streams;i++) {
426 AVStream *st;
427
428 // FIXME: a more elegant solution is needed
429 st = av_mallocz(sizeof(AVStream));
430 memcpy(st, ic->streams[i], sizeof(AVStream));
431 st->codec = avcodec_alloc_context();
432 memcpy(st->codec, ic->streams[i]->codec, sizeof(AVCodecContext));
433 s->streams[i] = st;
434 }
435
436 av_close_input_file(ic);
437 return 0;
438 }
439
440 static double
441 get_sync_ipts(const AVOutputStream *ost)
442 {
443 const AVInputStream *ist = ost->sync_ist;
444 return (double)(ist->pts + input_files_ts_offset[ist->file_index] - start_time)/AV_TIME_BASE;
445 }
446
447 #define MAX_AUDIO_PACKET_SIZE (128 * 1024)
448
449 static void do_audio_out(AVFormatContext *s,
450 AVOutputStream *ost,
451 AVInputStream *ist,
452 unsigned char *buf, int size)
453 {
454 uint8_t *buftmp;
455 static uint8_t *audio_buf = NULL;
456 static uint8_t *audio_out = NULL;
457 const int audio_out_size= 4*MAX_AUDIO_PACKET_SIZE;
458
459 int size_out, frame_bytes, ret;
460 AVCodecContext *enc= ost->st->codec;
461
462 /* SC: dynamic allocation of buffers */
463 if (!audio_buf)
464 audio_buf = av_malloc(2*MAX_AUDIO_PACKET_SIZE);
465 if (!audio_out)
466 audio_out = av_malloc(audio_out_size);
467 if (!audio_buf || !audio_out)
468 return; /* Should signal an error ! */
469
470 if(audio_sync_method){
471 double delta = get_sync_ipts(ost) * enc->sample_rate - ost->sync_opts
472 - fifo_size(&ost->fifo, ost->fifo.rptr)/(ost->st->codec->channels * 2);
473 double idelta= delta*ist->st->codec->sample_rate / enc->sample_rate;
474 int byte_delta= ((int)idelta)*2*ist->st->codec->channels;
475
476 //FIXME resample delay
477 if(fabs(delta) > 50){
478 if(ist->is_start){
479 if(byte_delta < 0){
480 byte_delta= FFMAX(byte_delta, -size);
481 size += byte_delta;
482 buf -= byte_delta;
483 if(verbose > 2)
484 fprintf(stderr, "discarding %d audio samples\n", (int)-delta);
485 if(!size)
486 return;
487 ist->is_start=0;
488 }else{
489 static uint8_t *input_tmp= NULL;
490 input_tmp= av_realloc(input_tmp, byte_delta + size);
491
492 if(byte_delta + size <= MAX_AUDIO_PACKET_SIZE)
493 ist->is_start=0;
494 else
495 byte_delta= MAX_AUDIO_PACKET_SIZE - size;
496
497 memset(input_tmp, 0, byte_delta);
498 memcpy(input_tmp + byte_delta, buf, size);
499 buf= input_tmp;
500 size += byte_delta;
501 if(verbose > 2)
502 fprintf(stderr, "adding %d audio samples of silence\n", (int)delta);
503 }
504 }else if(audio_sync_method>1){
505 int comp= clip(delta, -audio_sync_method, audio_sync_method);
506 assert(ost->audio_resample);
507 if(verbose > 2)
508 fprintf(stderr, "compensating audio timestamp drift:%f compensation:%d in:%d\n", delta, comp, enc->sample_rate);
509 // fprintf(stderr, "drift:%f len:%d opts:%lld ipts:%lld fifo:%d\n", delta, -1, ost->sync_opts, (int64_t)(get_sync_ipts(ost) * enc->sample_rate), fifo_size(&ost->fifo, ost->fifo.rptr)/(ost->st->codec->channels * 2));
510 av_resample_compensate(*(struct AVResampleContext**)ost->resample, comp, enc->sample_rate);
511 }
512 }
513 }else
514 ost->sync_opts= lrintf(get_sync_ipts(ost) * enc->sample_rate)
515 - fifo_size(&ost->fifo, ost->fifo.rptr)/(ost->st->codec->channels * 2); //FIXME wrong
516
517 if (ost->audio_resample) {
518 buftmp = audio_buf;
519 size_out = audio_resample(ost->resample,
520 (short *)buftmp, (short *)buf,
521 size / (ist->st->codec->channels * 2));
522 size_out = size_out * enc->channels * 2;
523 } else {
524 buftmp = buf;
525 size_out = size;
526 }
527
528 /* now encode as many frames as possible */
529 if (enc->frame_size > 1) {
530 /* output resampled raw samples */
531 fifo_write(&ost->fifo, buftmp, size_out,
532 &ost->fifo.wptr);
533
534 frame_bytes = enc->frame_size * 2 * enc->channels;
535
536 while (fifo_read(&ost->fifo, audio_buf, frame_bytes,
537 &ost->fifo.rptr) == 0) {
538 AVPacket pkt;
539 av_init_packet(&pkt);
540
541 ret = avcodec_encode_audio(enc, audio_out, audio_out_size,
542 (short *)audio_buf);
543 audio_size += ret;
544 pkt.stream_index= ost->index;
545 pkt.data= audio_out;
546 pkt.size= ret;
547 if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
548 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
549 pkt.flags |= PKT_FLAG_KEY;
550 av_interleaved_write_frame(s, &pkt);
551
552 ost->sync_opts += enc->frame_size;
553 }
554 } else {
555 AVPacket pkt;
556 av_init_packet(&pkt);
557
558 ost->sync_opts += size_out / (2 * enc->channels);
559
560 /* output a pcm frame */
561 /* XXX: change encoding codec API to avoid this ? */
562 switch(enc->codec->id) {
563 case CODEC_ID_PCM_S32LE:
564 case CODEC_ID_PCM_S32BE:
565 case CODEC_ID_PCM_U32LE:
566 case CODEC_ID_PCM_U32BE:
567 size_out = size_out << 1;
568 break;
569 case CODEC_ID_PCM_S24LE:
570 case CODEC_ID_PCM_S24BE:
571 case CODEC_ID_PCM_U24LE:
572 case CODEC_ID_PCM_U24BE:
573 case CODEC_ID_PCM_S24DAUD:
574 size_out = size_out / 2 * 3;
575 break;
576 case CODEC_ID_PCM_S16LE:
577 case CODEC_ID_PCM_S16BE:
578 case CODEC_ID_PCM_U16LE:
579 case CODEC_ID_PCM_U16BE:
580 break;
581 default:
582 size_out = size_out >> 1;
583 break;
584 }
585 ret = avcodec_encode_audio(enc, audio_out, size_out,
586 (short *)buftmp);
587 audio_size += ret;
588 pkt.stream_index= ost->index;
589 pkt.data= audio_out;
590 pkt.size= ret;
591 if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
592 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
593 pkt.flags |= PKT_FLAG_KEY;
594 av_interleaved_write_frame(s, &pkt);
595 }
596 }
597
598 static void pre_process_video_frame(AVInputStream *ist, AVPicture *picture, void **bufp)
599 {
600 AVCodecContext *dec;
601 AVPicture *picture2;
602 AVPicture picture_tmp;
603 uint8_t *buf = 0;
604
605 dec = ist->st->codec;
606
607 /* deinterlace : must be done before any resize */
608 if (do_deinterlace || using_vhook) {
609 int size;
610
611 /* create temporary picture */
612 size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
613 buf = av_malloc(size);
614 if (!buf)
615 return;
616
617 picture2 = &picture_tmp;
618 avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
619
620 if (do_deinterlace){
621 if(avpicture_deinterlace(picture2, picture,
622 dec->pix_fmt, dec->width, dec->height) < 0) {
623 /* if error, do not deinterlace */
624 av_free(buf);
625 buf = NULL;
626 picture2 = picture;
627 }
628 } else {
629 img_copy(picture2, picture, dec->pix_fmt, dec->width, dec->height);
630 }
631 } else {
632 picture2 = picture;
633 }
634
635 frame_hook_process(picture2, dec->pix_fmt, dec->width, dec->height);
636
637 if (picture != picture2)
638 *picture = *picture2;
639 *bufp = buf;
640 }
641
642 /* we begin to correct av delay at this threshold */
643 #define AV_DELAY_MAX 0.100
644
645 static void do_subtitle_out(AVFormatContext *s,
646 AVOutputStream *ost,
647 AVInputStream *ist,
648 AVSubtitle *sub,
649 int64_t pts)
650 {
651 static uint8_t *subtitle_out = NULL;
652 int subtitle_out_max_size = 65536;
653 int subtitle_out_size, nb, i;
654 AVCodecContext *enc;
655 AVPacket pkt;
656
657 if (pts == AV_NOPTS_VALUE) {
658 fprintf(stderr, "Subtitle packets must have a pts\n");
659 return;
660 }
661
662 enc = ost->st->codec;
663
664 if (!subtitle_out) {
665 subtitle_out = av_malloc(subtitle_out_max_size);
666 }
667
668 /* Note: DVB subtitle need one packet to draw them and one other
669 packet to clear them */
670 /* XXX: signal it in the codec context ? */
671 if (enc->codec_id == CODEC_ID_DVB_SUBTITLE)
672 nb = 2;
673 else
674 nb = 1;
675
676 for(i = 0; i < nb; i++) {
677 subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
678 subtitle_out_max_size, sub);
679
680 av_init_packet(&pkt);
681 pkt.stream_index = ost->index;
682 pkt.data = subtitle_out;
683 pkt.size = subtitle_out_size;
684 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);
685 if (enc->codec_id == CODEC_ID_DVB_SUBTITLE) {
686 /* XXX: the pts correction is handled here. Maybe handling
687 it in the codec would be better */
688 if (i == 0)
689 pkt.pts += 90 * sub->start_display_time;
690 else
691 pkt.pts += 90 * sub->end_display_time;
692 }
693 av_interleaved_write_frame(s, &pkt);
694 }
695 }
696
697 static int bit_buffer_size= 1024*256;
698 static uint8_t *bit_buffer= NULL;
699
700 static void do_video_out(AVFormatContext *s,
701 AVOutputStream *ost,
702 AVInputStream *ist,
703 AVFrame *in_picture,
704 int *frame_size)
705 {
706 int nb_frames, i, ret;
707 AVFrame *final_picture, *formatted_picture, *resampling_dst, *padding_src;
708 AVFrame picture_format_temp, picture_crop_temp, picture_pad_temp;
709 uint8_t *buf = NULL, *buf1 = NULL;
710 AVCodecContext *enc, *dec;
711 enum PixelFormat target_pixfmt;
712
713 avcodec_get_frame_defaults(&picture_format_temp);
714 avcodec_get_frame_defaults(&picture_crop_temp);
715 avcodec_get_frame_defaults(&picture_pad_temp);
716
717 enc = ost->st->codec;
718 dec = ist->st->codec;
719
720 /* by default, we output a single frame */
721 nb_frames = 1;
722
723 *frame_size = 0;
724
725 if(video_sync_method){
726 double vdelta;
727 vdelta = get_sync_ipts(ost) / av_q2d(enc->time_base) - ost->sync_opts;
728 //FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
729 if (vdelta < -1.1)
730 nb_frames = 0;
731 else if (vdelta > 1.1)
732 nb_frames = lrintf(vdelta);
733 //fprintf(stderr, "vdelta:%f, ost->sync_opts:%lld, ost->sync_ipts:%f nb_frames:%d\n", vdelta, ost->sync_opts, ost->sync_ipts, nb_frames);
734 if (nb_frames == 0){
735 ++nb_frames_drop;
736 if (verbose>2)
737 fprintf(stderr, "*** drop!\n");
738 }else if (nb_frames > 1) {
739 nb_frames_dup += nb_frames;
740 if (verbose>2)
741 fprintf(stderr, "*** %d dup!\n", nb_frames-1);
742 }
743 }else
744 ost->sync_opts= lrintf(get_sync_ipts(ost) / av_q2d(enc->time_base));
745
746 nb_frames= FFMIN(nb_frames, max_frames[CODEC_TYPE_VIDEO] - ost->frame_number);
747 if (nb_frames <= 0)
748 return;
749
750 /* convert pixel format if needed */
751 target_pixfmt = ost->video_resample ? PIX_FMT_YUV420P : enc->pix_fmt;
752 if (dec->pix_fmt != target_pixfmt) {
753 int size;
754
755 /* create temporary picture */
756 size = avpicture_get_size(target_pixfmt, dec->width, dec->height);
757 buf = av_malloc(size);
758 if (!buf)
759 return;
760 formatted_picture = &picture_format_temp;
761 avpicture_fill((AVPicture*)formatted_picture, buf, target_pixfmt, dec->width, dec->height);
762
763 if (img_convert((AVPicture*)formatted_picture, target_pixfmt,
764 (AVPicture *)in_picture, dec->pix_fmt,
765 dec->width, dec->height) < 0) {
766
767 if (verbose >= 0)
768 fprintf(stderr, "pixel format conversion not handled\n");
769
770 goto the_end;
771 }
772 } else {
773 formatted_picture = in_picture;
774 }
775
776 if (ost->video_crop) {
777 if (img_crop((AVPicture *)&picture_crop_temp, (AVPicture *)formatted_picture, target_pixfmt, ost->topBand, ost->leftBand) < 0) {
778 av_log(NULL, AV_LOG_ERROR, "error cropping picture\n");
779 goto the_end;
780 }
781 formatted_picture = &picture_crop_temp;
782 }
783
784 final_picture = formatted_picture;
785 padding_src = formatted_picture;
786 resampling_dst = &ost->pict_tmp;
787 if (ost->video_pad) {
788 final_picture = &ost->pict_tmp;
789 if (ost->video_resample) {
790 if (img_crop((AVPicture *)&picture_pad_temp, (AVPicture *)final_picture, target_pixfmt, ost->padtop, ost->padleft) < 0) {
791 av_log(NULL, AV_LOG_ERROR, "error padding picture\n");
792 goto the_end;
793 }
794 resampling_dst = &picture_pad_temp;
795 }
796 }
797
798 /* XXX: resampling could be done before raw format conversion in
799 some cases to go faster */
800 /* XXX: only works for YUV420P */
801 if (ost->video_resample) {
802 padding_src = NULL;
803 final_picture = &ost->pict_tmp;
804 img_resample(ost->img_resample_ctx, (AVPicture *)resampling_dst, (AVPicture*)formatted_picture);
805 }
806
807 if (enc->pix_fmt != target_pixfmt) {
808 int size;
809
810 av_free(buf);
811 /* create temporary picture */
812 size = avpicture_get_size(enc->pix_fmt, enc->width, enc->height);
813 buf = av_malloc(size);
814 if (!buf)
815 return;
816 final_picture = &picture_format_temp;
817 avpicture_fill((AVPicture*)final_picture, buf, enc->pix_fmt, enc->width, enc->height);
818
819 if (img_convert((AVPicture*)final_picture, enc->pix_fmt,
820 (AVPicture*)&ost->pict_tmp, target_pixfmt,
821 enc->width, enc->height) < 0) {
822
823 if (verbose >= 0)
824 fprintf(stderr, "pixel format conversion not handled\n");
825
826 goto the_end;
827 }
828 }
829
830 if (ost->video_pad) {
831 img_pad((AVPicture*)final_picture, (AVPicture *)padding_src,
832 enc->height, enc->width, enc->pix_fmt,
833 ost->padtop, ost->padbottom, ost->padleft, ost->padright, padcolor);
834 }
835
836 /* duplicates frame if needed */
837 for(i=0;i<nb_frames;i++) {
838 AVPacket pkt;
839 av_init_packet(&pkt);
840 pkt.stream_index= ost->index;
841
842 if (s->oformat->flags & AVFMT_RAWPICTURE) {
843 /* raw pictures are written as AVPicture structure to
844 avoid any copies. We support temorarily the older
845 method. */
846 AVFrame* old_frame = enc->coded_frame;
847 enc->coded_frame = dec->coded_frame; //FIXME/XXX remove this hack
848 pkt.data= (uint8_t *)final_picture;
849 pkt.size= sizeof(AVPicture);
850 if(dec->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
851 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
852 if(dec->coded_frame && dec->coded_frame->key_frame)
853 pkt.flags |= PKT_FLAG_KEY;
854
855 av_interleaved_write_frame(s, &pkt);
856 enc->coded_frame = old_frame;
857 } else {
858 AVFrame big_picture;
859
860 big_picture= *final_picture;
861 /* better than nothing: use input picture interlaced
862 settings */
863 big_picture.interlaced_frame = in_picture->interlaced_frame;
864 if(avctx_opts->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)){
865 if(top_field_first == -1)
866 big_picture.top_field_first = in_picture->top_field_first;
867 else
868 big_picture.top_field_first = top_field_first;
869 }
870
871 /* handles sameq here. This is not correct because it may
872 not be a global option */
873 if (same_quality) {
874 big_picture.quality = ist->st->quality;
875 }else
876 big_picture.quality = ost->st->quality;
877 if(!me_threshold)
878 big_picture.pict_type = 0;
879 // big_picture.pts = AV_NOPTS_VALUE;
880 big_picture.pts= ost->sync_opts;
881 // big_picture.pts= av_rescale(ost->sync_opts, AV_TIME_BASE*(int64_t)enc->time_base.num, enc->time_base.den);
882 //av_log(NULL, AV_LOG_DEBUG, "%lld -> encoder\n", ost->sync_opts);
883 ret = avcodec_encode_video(enc,
884 bit_buffer, bit_buffer_size,
885 &big_picture);
886 //enc->frame_number = enc->real_pict_num;
887 if(ret>0){
888 pkt.data= bit_buffer;
889 pkt.size= ret;
890 if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
891 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
892 /*av_log(NULL, AV_LOG_DEBUG, "encoder -> %lld/%lld\n",
893 pkt.pts != AV_NOPTS_VALUE ? av_rescale(pkt.pts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1,
894 pkt.dts != AV_NOPTS_VALUE ? av_rescale(pkt.dts, enc->time_base.den, AV_TIME_BASE*(int64_t)enc->time_base.num) : -1);*/
895
896 if(enc->coded_frame && enc->coded_frame->key_frame)
897 pkt.flags |= PKT_FLAG_KEY;
898 av_interleaved_write_frame(s, &pkt);
899 *frame_size = ret;
900 //fprintf(stderr,"\nFrame: %3d %3d size: %5d type: %d",
901 // enc->frame_number-1, enc->real_pict_num, ret,
902 // enc->pict_type);
903 /* if two pass, output log */
904 if (ost->logfile && enc->stats_out) {
905 fprintf(ost->logfile, "%s", enc->stats_out);
906 }
907 }
908 }
909 ost->sync_opts++;
910 ost->frame_number++;
911 }
912 the_end:
913 av_free(buf);
914 av_free(buf1);
915 }
916
917 static double psnr(double d){
918 if(d==0) return INFINITY;
919 return -10.0*log(d)/log(10.0);
920 }
921
922 static void do_video_stats(AVFormatContext *os, AVOutputStream *ost,
923 int frame_size)
924 {
925 static FILE *fvstats=NULL;
926 char filename[40];
927 time_t today2;
928 struct tm *today;
929 AVCodecContext *enc;
930 int frame_number;
931 int64_t ti;
932 double ti1, bitrate, avg_bitrate;
933
934 if (!fvstats) {
935 today2 = time(NULL);
936 today = localtime(&today2);
937 snprintf(filename, sizeof(filename), "vstats_%02d%02d%02d.log", today->tm_hour,
938 today->tm_min,
939 today->tm_sec);
940 fvstats = fopen(filename,"w");
941 if (!fvstats) {
942 perror("fopen");
943 exit(1);
944 }
945 }
946
947 ti = MAXINT64;
948 enc = ost->st->codec;
949 if (enc->codec_type == CODEC_TYPE_VIDEO) {
950 frame_number = ost->frame_number;
951 fprintf(fvstats, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality/(float)FF_QP2LAMBDA);
952 if (enc->flags&CODEC_FLAG_PSNR)
953 fprintf(fvstats, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0]/(enc->width*enc->height*255.0*255.0)));
954
955 fprintf(fvstats,"f_size= %6d ", frame_size);
956 /* compute pts value */
957 ti1 = ost->sync_opts * av_q2d(enc->time_base);
958 if (ti1 < 0.01)
959 ti1 = 0.01;
960
961 bitrate = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
962 avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
963 fprintf(fvstats, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
964 (double)video_size / 1024, ti1, bitrate, avg_bitrate);
965 fprintf(fvstats,"type= %c\n", av_get_pict_type_char(enc->coded_frame->pict_type));
966 }
967 }
968
969 static void print_report(AVFormatContext **output_files,
970 AVOutputStream **ost_table, int nb_ostreams,
971 int is_last_report)
972 {
973 char buf[1024];
974 AVOutputStream *ost;
975 AVFormatContext *oc, *os;
976 int64_t total_size;
977 AVCodecContext *enc;
978 int frame_number, vid, i;
979 double bitrate, ti1, pts;
980 static int64_t last_time = -1;
981 static int qp_histogram[52];
982
983 if (!is_last_report) {
984 int64_t cur_time;
985 /* display the report every 0.5 seconds */
986 cur_time = av_gettime();
987 if (last_time == -1) {
988 last_time = cur_time;
989 return;
990 }
991 if ((cur_time - last_time) < 500000)
992 return;
993 last_time = cur_time;
994 }
995
996
997 oc = output_files[0];
998
999 total_size = url_ftell(&oc->pb);
1000
1001 buf[0] = '\0';
1002 ti1 = 1e10;
1003 vid = 0;
1004 for(i=0;i<nb_ostreams;i++) {
1005 ost = ost_table[i];
1006 os = output_files[ost->file_index];
1007 enc = ost->st->codec;
1008 if (vid && enc->codec_type == CODEC_TYPE_VIDEO) {
1009 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ",
1010 enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1011 }
1012 if (!vid && enc->codec_type == CODEC_TYPE_VIDEO) {
1013 frame_number = ost->frame_number;
1014 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d q=%3.1f ",
1015 frame_number, enc->coded_frame ? enc->coded_frame->quality/(float)FF_QP2LAMBDA : -1);
1016 if(is_last_report)
1017 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1018 if(qp_hist && enc->coded_frame){
1019 int j;
1020 int qp= lrintf(enc->coded_frame->quality/(float)FF_QP2LAMBDA);
1021 if(qp>=0 && qp<sizeof(qp_histogram)/sizeof(int))
1022 qp_histogram[qp]++;
1023 for(j=0; j<32; j++)
1024 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j]+1)/log(2)));
1025 }
1026 if (enc->flags&CODEC_FLAG_PSNR){
1027 int j;
1028 double error, error_sum=0;
1029 double scale, scale_sum=0;
1030 char type[3]= {'Y','U','V'};
1031 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1032 for(j=0; j<3; j++){
1033 if(is_last_report){
1034 error= enc->error[j];
1035 scale= enc->width*enc->height*255.0*255.0*frame_number;
1036 }else{
1037 error= enc->coded_frame->error[j];
1038 scale= enc->width*enc->height*255.0*255.0;
1039 }
1040 if(j) scale/=4;
1041 error_sum += error;
1042 scale_sum += scale;
1043 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], psnr(error/scale));
1044 }
1045 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum/scale_sum));
1046 }
1047 vid = 1;
1048 }
1049 /* compute min output value */
1050 pts = (double)ost->st->pts.val * ost->st->time_base.num / ost->st->time_base.den;
1051 if ((pts < ti1) && (pts > 0))
1052 ti1 = pts;
1053 }
1054 if (ti1 < 0.01)
1055 ti1 = 0.01;
1056
1057 if (verbose || is_last_report) {
1058 bitrate = (double)(total_size * 8) / ti1 / 1000.0;
1059
1060 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1061 "size=%8.0fkB time=%0.1f bitrate=%6.1fkbits/s",
1062 (double)total_size / 1024, ti1, bitrate);
1063
1064 if (verbose > 1)
1065 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1066 nb_frames_dup, nb_frames_drop);
1067
1068 if (verbose >= 0)
1069 fprintf(stderr, "%s \r", buf);
1070
1071 fflush(stderr);
1072 }
1073
1074 if (is_last_report && verbose >= 0){
1075 int64_t raw= audio_size + video_size + extra_size;
1076 fprintf(stderr, "\n");
1077 fprintf(stderr, "video:%1.0fkB audio:%1.0fkB global headers:%1.0fkB muxing overhead %f%%\n",
1078 video_size/1024.0,
1079 audio_size/1024.0,
1080 extra_size/1024.0,
1081 100.0*(total_size - raw)/raw
1082 );
1083 }
1084 }
1085
1086 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1087 static int output_packet(AVInputStream *ist, int ist_index,
1088 AVOutputStream **ost_table, int nb_ostreams,
1089 const AVPacket *pkt)
1090 {
1091 AVFormatContext *os;
1092 AVOutputStream *ost;
1093 uint8_t *ptr;
1094 int len, ret, i;
1095 uint8_t *data_buf;
1096 int data_size, got_picture;
1097 AVFrame picture;
1098 void *buffer_to_free;
1099 static unsigned int samples_size= 0;
1100 static short *samples= NULL;
1101 AVSubtitle subtitle, *subtitle_to_free;
1102 int got_subtitle;
1103
1104 if(!pkt){
1105 ist->pts= ist->next_pts; // needed for last packet if vsync=0
1106 } else if (pkt->dts != AV_NOPTS_VALUE) { //FIXME seems redundant, as libavformat does this too
1107 ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1108 } else {
1109 // assert(ist->pts == ist->next_pts);
1110 }
1111
1112 if (pkt == NULL) {
1113 /* EOF handling */
1114 ptr = NULL;
1115 len = 0;
1116 goto handle_eof;
1117 }
1118
1119 len = pkt->size;
1120 ptr = pkt->data;
1121 while (len > 0) {
1122 handle_eof:
1123 /* decode the packet if needed */
1124 data_buf = NULL; /* fail safe */
1125 data_size = 0;
1126 subtitle_to_free = NULL;
1127 if (ist->decoding_needed) {
1128 switch(ist->st->codec->codec_type) {
1129 case CODEC_TYPE_AUDIO:{
1130 if(pkt)
1131 samples= av_fast_realloc(samples, &samples_size, FFMAX(pkt->size, AVCODEC_MAX_AUDIO_FRAME_SIZE));
1132 /* XXX: could avoid copy if PCM 16 bits with same
1133 endianness as CPU */
1134 ret = avcodec_decode_audio(ist->st->codec, samples, &data_size,
1135 ptr, len);
1136 if (ret < 0)
1137 goto fail_decode;
1138 ptr += ret;
1139 len -= ret;
1140 /* Some bug in mpeg audio decoder gives */
1141 /* data_size < 0, it seems they are overflows */
1142 if (data_size <= 0) {
1143 /* no audio frame */
1144 continue;
1145 }
1146 data_buf = (uint8_t *)samples;
1147 ist->next_pts += ((int64_t)AV_TIME_BASE/2 * data_size) /
1148 (ist->st->codec->sample_rate * ist->st->codec->channels);
1149 break;}
1150 case CODEC_TYPE_VIDEO:
1151 data_size = (ist->st->codec->width * ist->st->codec->height * 3) / 2;
1152 /* XXX: allocate picture correctly */
1153 avcodec_get_frame_defaults(&picture);
1154
1155 ret = avcodec_decode_video(ist->st->codec,
1156 &picture, &got_picture, ptr, len);
1157 ist->st->quality= picture.quality;
1158 if (ret < 0)
1159 goto fail_decode;
1160 if (!got_picture) {
1161 /* no picture yet */
1162 goto discard_packet;
1163 }
1164 if (ist->st->codec->time_base.num != 0) {
1165 ist->next_pts += ((int64_t)AV_TIME_BASE *
1166 ist->st->codec->time_base.num) /
1167 ist->st->codec->time_base.den;
1168 }
1169 len = 0;
1170 break;
1171 case CODEC_TYPE_SUBTITLE:
1172 ret = avcodec_decode_subtitle(ist->st->codec,
1173 &subtitle, &got_subtitle, ptr, len);
1174 if (ret < 0)
1175 goto fail_decode;
1176 if (!got_subtitle) {
1177 goto discard_packet;
1178 }
1179 subtitle_to_free = &subtitle;
1180 len = 0;
1181 break;
1182 default:
1183 goto fail_decode;
1184 }
1185 } else {
1186 switch(ist->st->codec->codec_type) {
1187 case CODEC_TYPE_AUDIO:
1188 ist->next_pts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1189 (ist->st->codec->sample_rate * ist->st->codec->channels);
1190 break;
1191 case CODEC_TYPE_VIDEO:
1192 if (ist->st->codec->time_base.num != 0) {
1193 ist->next_pts += ((int64_t)AV_TIME_BASE *
1194 ist->st->codec->time_base.num) /
1195 ist->st->codec->time_base.den;
1196 }
1197 break;
1198 }
1199 data_buf = ptr;
1200 data_size = len;
1201 ret = len;
1202 len = 0;
1203 }
1204
1205 buffer_to_free = NULL;
1206 if (ist->st->codec->codec_type == CODEC_TYPE_VIDEO) {
1207 pre_process_video_frame(ist, (AVPicture *)&picture,
1208 &buffer_to_free);
1209 }
1210
1211 // preprocess audio (volume)
1212 if (ist->st->codec->codec_type == CODEC_TYPE_AUDIO) {
1213 if (audio_volume != 256) {
1214 short *volp;
1215 volp = samples;
1216 for(i=0;i<(data_size / sizeof(short));i++) {
1217 int v = ((*volp) * audio_volume + 128) >> 8;
1218 if (v < -32768) v = -32768;
1219 if (v > 32767) v = 32767;
1220 *volp++ = v;
1221 }
1222 }
1223 }
1224
1225 /* frame rate emulation */
1226 if (ist->st->codec->rate_emu) {
1227 int64_t pts = av_rescale((int64_t) ist->frame * ist->st->codec->time_base.num, 1000000, ist->st->codec->time_base.den);
1228 int64_t now = av_gettime() - ist->start;
1229 if (pts > now)
1230 usleep(pts - now);
1231
1232 ist->frame++;
1233 }
1234
1235 #if 0
1236 /* mpeg PTS deordering : if it is a P or I frame, the PTS
1237 is the one of the next displayed one */
1238 /* XXX: add mpeg4 too ? */
1239 if (ist->st->codec->codec_id == CODEC_ID_MPEG1VIDEO) {
1240 if (ist->st->codec->pict_type != B_TYPE) {
1241 int64_t tmp;
1242 tmp = ist->last_ip_pts;
1243 ist->last_ip_pts = ist->frac_pts.val;
1244 ist->frac_pts.val = tmp;
1245 }
1246 }
1247 #endif
1248 /* if output time reached then transcode raw format,
1249 encode packets and output them */
1250 if (start_time == 0 || ist->pts >= start_time)
1251 for(i=0;i<nb_ostreams;i++) {
1252 int frame_size;
1253
1254 ost = ost_table[i];
1255 if (ost->source_index == ist_index) {
1256 os = output_files[ost->file_index];
1257
1258 #if 0
1259 printf("%d: got pts=%0.3f %0.3f\n", i,
1260 (double)pkt->pts / AV_TIME_BASE,
1261 ((double)ist->pts / AV_TIME_BASE) -
1262 ((double)ost->st->pts.val * ost->st->time_base.num / ost->st->time_base.den));
1263 #endif
1264 /* set the input output pts pairs */
1265 //ost->sync_ipts = (double)(ist->pts + input_files_ts_offset[ist->file_index] - start_time)/ AV_TIME_BASE;
1266
1267 if (ost->encoding_needed) {
1268 switch(ost->st->codec->codec_type) {
1269 case CODEC_TYPE_AUDIO:
1270 do_audio_out(os, ost, ist, data_buf, data_size);
1271 break;
1272 case CODEC_TYPE_VIDEO:
1273 do_video_out(os, ost, ist, &picture, &frame_size);
1274 video_size += frame_size;
1275 if (do_vstats && frame_size)
1276 do_video_stats(os, ost, frame_size);
1277 break;
1278 case CODEC_TYPE_SUBTITLE:
1279 do_subtitle_out(os, ost, ist, &subtitle,
1280 pkt->pts);
1281 break;
1282 default:
1283 av_abort();
1284 }
1285 } else {
1286 AVFrame avframe; //FIXME/XXX remove this
1287 AVPacket opkt;
1288 av_init_packet(&opkt);
1289
1290 /* no reencoding needed : output the packet directly */
1291 /* force the input stream PTS */
1292
1293 avcodec_get_frame_defaults(&avframe);
1294 ost->st->codec->coded_frame= &avframe;
1295 avframe.key_frame = pkt->flags & PKT_FLAG_KEY;
1296
1297 if(ost->st->codec->codec_type == CODEC_TYPE_AUDIO)
1298 audio_size += data_size;
1299 else if (ost->st->codec->codec_type == CODEC_TYPE_VIDEO) {
1300 video_size += data_size;
1301 ost->sync_opts++;
1302 }
1303
1304 opkt.stream_index= ost->index;
1305 if(pkt->pts != AV_NOPTS_VALUE)
1306 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);
1307 else
1308 opkt.pts= AV_NOPTS_VALUE;
1309
1310 {
1311 int64_t dts;
1312 if (pkt->dts == AV_NOPTS_VALUE)
1313 dts = ist->next_pts;
1314 else
1315 dts= av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1316 opkt.dts= av_rescale_q(dts + input_files_ts_offset[ist->file_index], AV_TIME_BASE_Q, ost->st->time_base);
1317 }
1318 opkt.flags= pkt->flags;
1319 if(av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, data_buf, data_size, pkt->flags & PKT_FLAG_KEY))
1320 opkt.destruct= av_destruct_packet;
1321 av_interleaved_write_frame(os, &opkt);
1322 ost->st->codec->frame_number++;
1323 ost->frame_number++;
1324 av_free_packet(&opkt);
1325 }
1326 }
1327 }
1328 av_free(buffer_to_free);
1329 /* XXX: allocate the subtitles in the codec ? */
1330 if (subtitle_to_free) {
1331 if (subtitle_to_free->rects != NULL) {
1332 for (i = 0; i < subtitle_to_free->num_rects; i++) {
1333 av_free(subtitle_to_free->rects[i].bitmap);
1334 av_free(subtitle_to_free->rects[i].rgba_palette);
1335 }
1336 av_freep(&subtitle_to_free->rects);
1337 }
1338 subtitle_to_free->num_rects = 0;
1339 subtitle_to_free = NULL;
1340 }
1341 }
1342 discard_packet:
1343 if (pkt == NULL) {
1344 /* EOF handling */
1345
1346 for(i=0;i<nb_ostreams;i++) {
1347 ost = ost_table[i];
1348 if (ost->source_index == ist_index) {
1349 AVCodecContext *enc= ost->st->codec;
1350 os = output_files[ost->file_index];
1351
1352 if(ost->st->codec->codec_type == CODEC_TYPE_AUDIO && enc->frame_size <=1)
1353 continue;
1354 if(ost->st->codec->codec_type == CODEC_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE))
1355 continue;
1356
1357 if (ost->encoding_needed) {
1358 for(;;) {
1359 AVPacket pkt;
1360 av_init_packet(&pkt);
1361 pkt.stream_index= ost->index;
1362
1363 switch(ost->st->codec->codec_type) {
1364 case CODEC_TYPE_AUDIO:
1365 ret = avcodec_encode_audio(enc, bit_buffer, bit_buffer_size, NULL);
1366 audio_size += ret;
1367 pkt.flags |= PKT_FLAG_KEY;
1368 break;
1369 case CODEC_TYPE_VIDEO:
1370 ret = avcodec_encode_video(enc, bit_buffer, bit_buffer_size, NULL);
1371 video_size += ret;
1372 if(enc->coded_frame && enc->coded_frame->key_frame)
1373 pkt.flags |= PKT_FLAG_KEY;
1374 if (ost->logfile && enc->stats_out) {
1375 fprintf(ost->logfile, "%s", enc->stats_out);
1376 }
1377 break;
1378 default:
1379 ret=-1;
1380 }
1381
1382 if(ret<=0)
1383 break;
1384 pkt.data= bit_buffer;
1385 pkt.size= ret;
1386 if(enc->coded_frame && enc->coded_frame->pts != AV_NOPTS_VALUE)
1387 pkt.pts= av_rescale_q(enc->coded_frame->pts, enc->time_base, ost->st->time_base);
1388 av_interleaved_write_frame(os, &pkt);
1389 }
1390 }
1391 }
1392 }
1393 }
1394
1395 return 0;
1396 fail_decode:
1397 return -1;
1398 }
1399
1400
1401 /*
1402 * The following code is the main loop of the file converter
1403 */
1404 static int av_encode(AVFormatContext **output_files,
1405 int nb_output_files,
1406 AVFormatContext **input_files,
1407 int nb_input_files,
1408 AVStreamMap *stream_maps, int nb_stream_maps)
1409 {
1410 int ret, i, j, k, n, nb_istreams = 0, nb_ostreams = 0;
1411 AVFormatContext *is, *os;
1412 AVCodecContext *codec, *icodec;
1413 AVOutputStream *ost, **ost_table = NULL;
1414 AVInputStream *ist, **ist_table = NULL;
1415 AVInputFile *file_table;
1416 AVFormatContext *stream_no_data;
1417 int key;
1418
1419 file_table= (AVInputFile*) av_mallocz(nb_input_files * sizeof(AVInputFile));
1420 if (!file_table)
1421 goto fail;
1422
1423 /* input stream init */
1424 j = 0;
1425 for(i=0;i<nb_input_files;i++) {
1426 is = input_files[i];
1427 file_table[i].ist_index = j;
1428 file_table[i].nb_streams = is->nb_streams;
1429 j += is->nb_streams;
1430 }
1431 nb_istreams = j;
1432
1433 ist_table = av_mallocz(nb_istreams * sizeof(AVInputStream *));
1434 if (!ist_table)
1435 goto fail;
1436
1437 for(i=0;i<nb_istreams;i++) {
1438 ist = av_mallocz(sizeof(AVInputStream));
1439 if (!ist)
1440 goto fail;
1441 ist_table[i] = ist;
1442 }
1443 j = 0;
1444 for(i=0;i<nb_input_files;i++) {
1445 is = input_files[i];
1446 for(k=0;k<is->nb_streams;k++) {
1447 ist = ist_table[j++];
1448 ist->st = is->streams[k];
1449 ist->file_index = i;
1450 ist->index = k;
1451 ist->discard = 1; /* the stream is discarded by default
1452 (changed later) */
1453
1454 if (ist->st->codec->rate_emu) {
1455 ist->start = av_gettime();
1456 ist->frame = 0;
1457 }
1458 }
1459 }
1460
1461 /* output stream init */
1462 nb_ostreams = 0;
1463 for(i=0;i<nb_output_files;i++) {
1464 os = output_files[i];
1465 nb_ostreams += os->nb_streams;
1466 }
1467 if (nb_stream_maps > 0 && nb_stream_maps != nb_ostreams) {
1468 fprintf(stderr, "Number of stream maps must match number of output streams\n");
1469 exit(1);
1470 }
1471
1472 /* Sanity check the mapping args -- do the input files & streams exist? */
1473 for(i=0;i<nb_stream_maps;i++) {
1474 int fi = stream_maps[i].file_index;
1475 int si = stream_maps[i].stream_index;
1476
1477 if (fi < 0 || fi > nb_input_files - 1 ||
1478 si < 0 || si > file_table[fi].nb_streams - 1) {
1479 fprintf(stderr,"Could not find input stream #%d.%d\n", fi, si);
1480 exit(1);
1481 }
1482 fi = stream_maps[i].sync_file_index;
1483 si = stream_maps[i].sync_stream_index;
1484 if (fi < 0 || fi > nb_input_files - 1 ||
1485 si < 0 || si > file_table[fi].nb_streams - 1) {
1486 fprintf(stderr,"Could not find sync stream #%d.%d\n", fi, si);
1487 exit(1);
1488 }
1489 }
1490
1491 ost_table = av_mallocz(sizeof(AVOutputStream *) * nb_ostreams);
1492 if (!ost_table)
1493 goto fail;
1494 for(i=0;i<nb_ostreams;i++) {
1495 ost = av_mallocz(sizeof(AVOutputStream));
1496 if (!ost)
1497 goto fail;
1498 ost_table[i] = ost;
1499 }
1500
1501 n = 0;
1502 for(k=0;k<nb_output_files;k++) {
1503 os = output_files[k];
1504 for(i=0;i<os->nb_streams;i++) {
1505 int found;
1506 ost = ost_table[n++];
1507 ost->file_index = k;
1508 ost->index = i;
1509 ost->st = os->streams[i];
1510 if (nb_stream_maps > 0) {
1511 ost->source_index = file_table[stream_maps[n-1].file_index].ist_index +
1512 stream_maps[n-1].stream_index;
1513
1514 /* Sanity check that the stream types match */
1515 if (ist_table[ost->source_index]->st->codec->codec_type != ost->st->codec->codec_type) {
1516 fprintf(stderr, "Codec type mismatch for mapping #%d.%d -> #%d.%d\n",
1517 stream_maps[n-1].file_index, stream_maps[n-1].stream_index,
1518 ost->file_index, ost->index);
1519 exit(1);
1520 }
1521
1522 } else {
1523 /* get corresponding input stream index : we select the first one with the right type */
1524 found = 0;
1525 for(j=0;j<nb_istreams;j++) {
1526 ist = ist_table[j];
1527 if (ist->discard &&
1528 ist->st->codec->codec_type == ost->st->codec->codec_type) {
1529 ost->source_index = j;
1530 found = 1;
1531 break;
1532 }
1533 }
1534
1535 if (!found) {
1536 /* try again and reuse existing stream */
1537 for(j=0;j<nb_istreams;j++) {
1538 ist = ist_table[j];
1539 if (ist->st->codec->codec_type == ost->st->codec->codec_type) {
1540 ost->source_index = j;
1541 found = 1;
1542 }
1543 }
1544 if (!found) {
1545 fprintf(stderr, "Could not find input stream matching output stream #%d.%d\n",
1546 ost->file_index, ost->index);
1547 exit(1);
1548 }
1549 }
1550 }
1551 ist = ist_table[ost->source_index];
1552 ist->discard = 0;
1553 ost->sync_ist = (nb_stream_maps > 0) ?
1554 ist_table[file_table[stream_maps[n-1].sync_file_index].ist_index +
1555 stream_maps[n-1].sync_stream_index] : ist;
1556 }
1557 }
1558
1559 /* for each output stream, we compute the right encoding parameters */
1560 for(i=0;i<nb_ostreams;i++) {
1561 ost = ost_table[i];
1562 ist = ist_table[ost->source_index];
1563
1564 codec = ost->st->codec;
1565 icodec = ist->st->codec;
1566
1567 if (ost->st->stream_copy) {
1568 /* if stream_copy is selected, no need to decode or encode */
1569 codec->codec_id = icodec->codec_id;
1570 codec->codec_type = icodec->codec_type;
1571 if(!codec->codec_tag) codec->codec_tag = icodec->codec_tag;
1572 codec->bit_rate = icodec->bit_rate;
1573 codec->extradata= icodec->extradata;
1574 codec->extradata_size= icodec->extradata_size;
1575 codec->time_base = icodec->time_base;
1576 switch(codec->codec_type) {
1577 case CODEC_TYPE_AUDIO:
1578 codec->sample_rate = icodec->sample_rate;
1579 codec->channels = icodec->channels;
1580 codec->frame_size = icodec->frame_size;
1581 codec->block_align= icodec->block_align;
1582 break;
1583 case CODEC_TYPE_VIDEO:
1584 codec->pix_fmt = icodec->pix_fmt;
1585 codec->width = icodec->width;
1586 codec->height = icodec->height;
1587 codec->has_b_frames = icodec->has_b_frames;
1588 break;
1589 case CODEC_TYPE_SUBTITLE:
1590 break;
1591 default:
1592 av_abort();
1593 }
1594 } else {
1595 switch(codec->codec_type) {
1596 case CODEC_TYPE_AUDIO:
1597 if (fifo_init(&ost->fifo, 2 * MAX_AUDIO_PACKET_SIZE))
1598 goto fail;
1599
1600 if (codec->channels == icodec->channels &&
1601 codec->sample_rate == icodec->sample_rate) {
1602 ost->audio_resample = 0;
1603 } else {
1604 if (codec->channels != icodec->channels &&
1605 (icodec->codec_id == CODEC_ID_AC3 ||
1606 icodec->codec_id == CODEC_ID_DTS)) {
1607 /* Special case for 5:1 AC3 and DTS input */
1608 /* and mono or stereo output */
1609 /* Request specific number of channels */
1610 icodec->channels = codec->channels;
1611 if (codec->sample_rate == icodec->sample_rate)
1612 ost->audio_resample = 0;
1613 else {
1614 ost->audio_resample = 1;
1615 }
1616 } else {
1617 ost->audio_resample = 1;
1618 }
1619 }
1620 if(audio_sync_method>1)
1621 ost->audio_resample = 1;
1622
1623 if(ost->audio_resample){
1624 ost->resample = audio_resample_init(codec->channels, icodec->channels,
1625 codec->sample_rate, icodec->sample_rate);
1626 if(!ost->resample){
1627 printf("Can't resample. Aborting.\n");
1628 av_abort();
1629 }
1630 }
1631 ist->decoding_needed = 1;
1632 ost->encoding_needed = 1;
1633 break;
1634 case CODEC_TYPE_VIDEO:
1635 ost->video_crop = ((frame_leftBand + frame_rightBand + frame_topBand + frame_bottomBand) != 0);
1636 ost->video_pad = ((frame_padleft + frame_padright + frame_padtop + frame_padbottom) != 0);
1637 ost->video_resample = ((codec->width != icodec->width -
1638 (frame_leftBand + frame_rightBand) +
1639 (frame_padleft + frame_padright)) ||
1640 (codec->height != icodec->height -
1641 (frame_topBand + frame_bottomBand) +
1642 (frame_padtop + frame_padbottom)));
1643 if (ost->video_crop) {
1644 ost->topBand = frame_topBand;
1645 ost->leftBand = frame_leftBand;
1646 }
1647 if (ost->video_pad) {
1648 ost->padtop = frame_padtop;
1649 ost->padleft = frame_padleft;
1650 ost->padbottom = frame_padbottom;
1651 ost->padright = frame_padright;
1652 if (!ost->video_resample) {
1653 avcodec_get_frame_defaults(&ost->pict_tmp);
1654 if( avpicture_alloc( (AVPicture*)&ost->pict_tmp, codec->pix_fmt,
1655 codec->width, codec->height ) )
1656 goto fail;
1657 }
1658 }
1659 if (ost->video_resample) {
1660 avcodec_get_frame_defaults(&ost->pict_tmp);
1661 if( avpicture_alloc( (AVPicture*)&ost->pict_tmp, PIX_FMT_YUV420P,
1662 codec->width, codec->height ) )
1663 goto fail;
1664
1665 ost->img_resample_ctx = img_resample_init(
1666 codec->width - (frame_padleft + frame_padright),
1667 codec->height - (frame_padtop + frame_padbottom),
1668 icodec->width - (frame_leftBand + frame_rightBand),
1669 icodec->height - (frame_topBand + frame_bottomBand));
1670
1671 }
1672 ost->encoding_needed = 1;
1673 ist->decoding_needed = 1;
1674 break;
1675 case CODEC_TYPE_SUBTITLE:
1676 ost->encoding_needed = 1;
1677 ist->decoding_needed = 1;
1678 break;
1679 default:
1680 av_abort();
1681 break;
1682 }
1683 /* two pass mode */
1684 if (ost->encoding_needed &&
1685 (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))) {
1686 char logfilename[1024];
1687 FILE *f;
1688 int size;
1689 char *logbuffer;
1690
1691 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
1692 pass_logfilename ?
1693 pass_logfilename : DEFAULT_PASS_LOGFILENAME, i);
1694 if (codec->flags & CODEC_FLAG_PASS1) {
1695 f = fopen(logfilename, "w");
1696 if (!f) {
1697 perror(logfilename);
1698 exit(1);
1699 }
1700 ost->logfile = f;
1701 } else {
1702 /* read the log file */
1703 f = fopen(logfilename, "r");
1704 if (!f) {
1705 perror(logfilename);
1706 exit(1);
1707 }
1708 fseek(f, 0, SEEK_END);
1709 size = ftell(f);
1710 fseek(f, 0, SEEK_SET);
1711 logbuffer = av_malloc(size + 1);
1712 if (!logbuffer) {
1713 fprintf(stderr, "Could not allocate log buffer\n");
1714 exit(1);
1715 }
1716 size = fread(logbuffer, 1, size, f);
1717 fclose(f);
1718 logbuffer[size] = '\0';
1719 codec->stats_in = logbuffer;
1720 }
1721 }
1722 }
1723 if(codec->codec_type == CODEC_TYPE_VIDEO){
1724 int size= codec->width * codec->height;
1725 bit_buffer_size= FFMAX(bit_buffer_size, 4*size);
1726 }
1727 }
1728
1729 if (!bit_buffer)
1730 bit_buffer = av_malloc(bit_buffer_size);
1731 if (!bit_buffer)
1732 goto fail;
1733
1734 /* dump the file output parameters - cannot be done before in case
1735 of stream copy */
1736 for(i=0;i<nb_output_files;i++) {
1737 dump_format(output_files[i], i, output_files[i]->filename, 1);
1738 }
1739
1740 /* dump the stream mapping */
1741 if (verbose >= 0) {
1742 fprintf(stderr, "Stream mapping:\n");
1743 for(i=0;i<nb_ostreams;i++) {
1744 ost = ost_table[i];
1745 fprintf(stderr, " Stream #%d.%d -> #%d.%d",
1746 ist_table[ost->source_index]->file_index,
1747 ist_table[ost->source_index]->index,
1748 ost->file_index,
1749 ost->index);
1750 if (ost->sync_ist != ist_table[ost->source_index])
1751 fprintf(stderr, " [sync #%d.%d]",
1752 ost->sync_ist->file_index,
1753 ost->sync_ist->index);
1754 fprintf(stderr, "\n");
1755 }
1756 }
1757
1758 /* open each encoder */
1759 for(i=0;i<nb_ostreams;i++) {
1760 ost = ost_table[i];
1761 if (ost->encoding_needed) {
1762 AVCodec *codec;
1763 codec = avcodec_find_encoder(ost->st->codec->codec_id);
1764 if (!codec) {
1765 fprintf(stderr, "Unsupported codec for output stream #%d.%d\n",
1766 ost->file_index, ost->index);
1767 exit(1);
1768 }
1769 if (avcodec_open(ost->st->codec, codec) < 0) {
1770 fprintf(stderr, "Error while opening codec for output stream #%d.%d - maybe incorrect parameters such as bit_rate, rate, width or height\n",
1771 ost->file_index, ost->index);
1772 exit(1);
1773 }
1774 extra_size += ost->st->codec->extradata_size;
1775 }
1776 }
1777
1778 /* open each decoder */
1779 for(i=0;i<nb_istreams;i++) {
1780 ist = ist_table[i];
1781 if (ist->decoding_needed) {
1782 AVCodec *codec;
1783 codec = avcodec_find_decoder(ist->st->codec->codec_id);
1784 if (!codec) {
1785 fprintf(stderr, "Unsupported codec (id=%d) for input stream #%d.%d\n",
1786 ist->st->codec->codec_id, ist->file_index, ist->index);
1787 exit(1);
1788 }
1789 if (avcodec_open(ist->st->codec, codec) < 0) {
1790 fprintf(stderr, "Error while opening codec for input stream #%d.%d\n",
1791 ist->file_index, ist->index);
1792 exit(1);
1793 }
1794 //if (ist->st->codec->codec_type == CODEC_TYPE_VIDEO)
1795 // ist->st->codec->flags |= CODEC_FLAG_REPEAT_FIELD;
1796 }
1797 }
1798
1799 /* init pts */
1800 for(i=0;i<nb_istreams;i++) {
1801 ist = ist_table[i];
1802 is = input_files[ist->file_index];
1803 ist->pts = 0;
1804 ist->next_pts = av_rescale_q(ist->st->start_time, ist->st->time_base, AV_TIME_BASE_Q);
1805 if(ist->st->start_time == AV_NOPTS_VALUE)
1806 ist->next_pts=0;
1807 if(input_files_ts_offset[ist->file_index])
1808 ist->next_pts= AV_NOPTS_VALUE;
1809 ist->is_start = 1;
1810 }
1811
1812 /* compute buffer size max (should use a complete heuristic) */
1813 for(i=0;i<nb_input_files;i++) {
1814 file_table[i].buffer_size_max = 2048;
1815 }
1816
1817 /* set meta data information from input file if required */
1818 for (i=0;i<nb_meta_data_maps;i++) {
1819 AVFormatContext *out_file;
1820 AVFormatContext *in_file;
1821
1822 int out_file_index = meta_data_maps[i].out_file;
1823 int in_file_index = meta_data_maps[i].in_file;
1824 if ( out_file_index < 0 || out_file_index >= nb_output_files ) {
1825 fprintf(stderr, "Invalid output file index %d map_meta_data(%d,%d)\n", out_file_index, out_file_index, in_file_index);
1826 ret = -EINVAL;
1827 goto fail;
1828 }
1829 if ( in_file_index < 0 || in_file_index >= nb_input_files ) {
1830 fprintf(stderr, "Invalid input file index %d map_meta_data(%d,%d)\n", in_file_index, out_file_index, in_file_index);
1831 ret = -EINVAL;
1832 goto fail;
1833 }
1834
1835 out_file = output_files[out_file_index];
1836 in_file = input_files[in_file_index];
1837
1838 strcpy(out_file->title, in_file->title);
1839 strcpy(out_file->author, in_file->author);
1840 strcpy(out_file->copyright, in_file->copyright);
1841 strcpy(out_file->comment, in_file->comment);
1842 strcpy(out_file->album, in_file->album);
1843 out_file->year = in_file->year;
1844 out_file->track = in_file->track;
1845 strcpy(out_file->genre, in_file->genre);
1846 }
1847
1848 /* open files and write file headers */
1849 for(i=0;i<nb_output_files;i++) {
1850 os = output_files[i];
1851 if (av_write_header(os) < 0) {
1852 fprintf(stderr, "Could not write header for output file #%d (incorrect codec parameters ?)\n", i);
1853 ret = -EINVAL;
1854 goto fail;
1855 }
1856 }
1857
1858 #ifndef CONFIG_WIN32
1859 if ( !using_stdin && verbose >= 0) {
1860 fprintf(stderr, "Press [q] to stop encoding\n");
1861 url_set_interrupt_cb(decode_interrupt_cb);
1862 }
1863 #endif
1864 term_init();
1865
1866 stream_no_data = 0;
1867 key = -1;
1868
1869 for(; received_sigterm == 0;) {
1870 int file_index, ist_index;
1871 AVPacket pkt;
1872 double ipts_min;
1873 double opts_min;
1874
1875 redo:
1876 ipts_min= 1e100;
1877 opts_min= 1e100;
1878 /* if 'q' pressed, exits */
1879 if (!using_stdin) {
1880 if (q_pressed)
1881 break;
1882 /* read_key() returns 0 on EOF */
1883 key = read_key();
1884 if (key == 'q')
1885 break;
1886 }
1887
1888 /* select the stream that we must read now by looking at the
1889 smallest output pts */
1890 file_index = -1;
1891 for(i=0;i<nb_ostreams;i++) {
1892 double ipts, opts;
1893 ost = ost_table[i];
1894 os = output_files[ost->file_index];
1895 ist = ist_table[ost->source_index];
1896 if(ost->st->codec->codec_type == CODEC_TYPE_VIDEO)
1897 opts = ost->sync_opts * av_q2d(ost->st->codec->time_base);
1898 else
1899 opts = ost->st->pts.val * av_q2d(ost->st->time_base);
1900 ipts = (double)ist->pts;
1901 if (!file_table[ist->file_index].eof_reached){
1902 if(ipts < ipts_min) {
1903 ipts_min = ipts;
1904 if(input_sync ) file_index = ist->file_index;
1905 }
1906 if(opts < opts_min) {
1907 opts_min = opts;
1908 if(!input_sync) file_index = ist->file_index;
1909 }
1910 }
1911 if(ost->frame_number >= max_frames[ost->st->codec->codec_type]){
1912 file_index= -1;
1913 break;
1914 }
1915 }
1916 /* if none, if is finished */
1917 if (file_index < 0) {
1918 break;
1919 }
1920
1921 /* finish if recording time exhausted */
1922 if (recording_time > 0 && opts_min >= (recording_time / 1000000.0))
1923 break;
1924
1925 /* finish if limit size exhausted */
1926 if (limit_filesize != 0 && (limit_filesize * 1024) < url_ftell(&output_files[0]->pb))
1927 break;
1928
1929 /* read a frame from it and output it in the fifo */
1930 is = input_files[file_index];
1931 if (av_read_frame(is, &pkt) < 0) {
1932 file_table[file_index].eof_reached = 1;
1933 if (opt_shortest) break; else continue; //
1934 }
1935
1936 if (!pkt.size) {
1937 stream_no_data = is;
1938 } else {
1939 stream_no_data = 0;
1940 }
1941 if (do_pkt_dump) {
1942 av_pkt_dump(stdout, &pkt, do_hex_dump);
1943 }
1944 /* the following test is needed in case new streams appear
1945 dynamically in stream : we ignore them */
1946 if (pkt.stream_index >= file_table[file_index].nb_streams)
1947 goto discard_packet;
1948 ist_index = file_table[file_index].ist_index + pkt.stream_index;
1949 ist = ist_table[ist_index];
1950 if (ist->discard)
1951 goto discard_packet;
1952
1953 // fprintf(stderr, "next:%lld dts:%lld off:%lld %d\n", ist->next_pts, pkt.dts, input_files_ts_offset[ist->file_index], ist->st->codec->codec_type);
1954 if (pkt.dts != AV_NOPTS_VALUE && ist->next_pts != AV_NOPTS_VALUE) {
1955 int64_t delta= av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q) - ist->next_pts;
1956 if(ABS(delta) > 1LL*dts_delta_threshold*AV_TIME_BASE && !copy_ts){
1957 input_files_ts_offset[ist->file_index]-= delta;
1958 if (verbose > 2)
1959 fprintf(stderr, "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n", delta, input_files_ts_offset[ist->file_index]);
1960 for(i=0; i<file_table[file_index].nb_streams; i++){
1961 int index= file_table[file_index].ist_index + i;
1962 ist_table[index]->next_pts += delta;
1963 ist_table[index]->is_start=1;
1964 }
1965 }
1966 }
1967
1968 //fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->index, pkt.size);
1969 if (output_packet(ist, ist_index, ost_table, nb_ostreams, &pkt) < 0) {
1970
1971 if (verbose >= 0)
1972 fprintf(stderr, "Error while decoding stream #%d.%d\n",
1973 ist->file_index, ist->index);
1974
1975 av_free_packet(&pkt);
1976 goto redo;
1977 }
1978
1979 discard_packet:
1980 av_free_packet(&pkt);
1981
1982 /* dump report by using the output first video and audio streams */
1983 print_report(output_files, ost_table, nb_ostreams, 0);
1984 }
1985
1986 /* at the end of stream, we must flush the decoder buffers */
1987 for(i=0;i<nb_istreams;i++) {
1988 ist = ist_table[i];
1989 if (ist->decoding_needed) {
1990 output_packet(ist, i, ost_table, nb_ostreams, NULL);
1991 }
1992 }
1993
1994 term_exit();
1995
1996 /* write the trailer if needed and close file */
1997 for(i=0;i<nb_output_files;i++) {
1998 os = output_files[i];
1999 av_write_trailer(os);
2000 }
2001
2002 /* dump report by using the first video and audio streams */
2003 print_report(output_files, ost_table, nb_ostreams, 1);
2004
2005 /* close each encoder */
2006 for(i=0;i<nb_ostreams;i++) {
2007 ost = ost_table[i];
2008 if (ost->encoding_needed) {
2009 av_freep(&ost->st->codec->stats_in);
2010 avcodec_close(ost->st->codec);
2011 }
2012 }
2013
2014 /* close each decoder */
2015 for(i=0;i<nb_istreams;i++) {
2016 ist = ist_table[i];
2017 if (ist->decoding_needed) {
2018 avcodec_close(ist->st->codec);
2019 }
2020 }
2021
2022 /* finished ! */
2023
2024 ret = 0;
2025 fail1:
2026 av_freep(&bit_buffer);
2027 av_free(file_table);
2028
2029 if (ist_table) {
2030 for(i=0;i<nb_istreams;i++) {
2031 ist = ist_table[i];
2032 av_free(ist);
2033 }
2034 av_free(ist_table);
2035 }
2036 if (ost_table) {
2037 for(i=0;i<nb_ostreams;i++) {
2038 ost = ost_table[i];
2039 if (ost) {
2040 if (ost->logfile) {
2041 fclose(ost->logfile);
2042 ost->logfile = NULL;
2043 }
2044 fifo_free(&ost->fifo); /* works even if fifo is not
2045 initialized but set to zero */
2046 av_free(ost->pict_tmp.data[0]);
2047 if (ost->video_resample)
2048 img_resample_close(ost->img_resample_ctx);
2049 if (ost->audio_resample)
2050 audio_resample_close(ost->resample);
2051 av_free(ost);
2052 }
2053 }
2054 av_free(ost_table);
2055 }
2056 return ret;
2057 fail:
2058 ret = -ENOMEM;
2059 goto fail1;
2060 }
2061
2062 #if 0
2063 int file_read(const char *filename)
2064 {
2065 URLContext *h;
2066 unsigned char buffer[1024];
2067 int len, i;
2068
2069 if (url_open(&h, filename, O_RDONLY) < 0) {
2070 printf("could not open '%s'\n", filename);
2071 return -1;
2072 }
2073 for(;;) {
2074 len = url_read(h, buffer, sizeof(buffer));
2075 if (len <= 0)
2076 break;
2077 for(i=0;i<len;i++) putchar(buffer[i]);
2078 }
2079 url_close(h);
2080 return 0;
2081 }
2082 #endif
2083
2084 static void opt_image_format(const char *arg)
2085 {
2086 AVImageFormat *f;
2087
2088 for(f = first_image_format; f != NULL; f = f->next) {
2089 if (!strcmp(arg, f->name))
2090 break;
2091 }
2092 if (!f) {
2093 fprintf(stderr, "Unknown image format: '%s'\n", arg);
2094 exit(1);
2095 }
2096 image_format = f;
2097 }
2098
2099 static void opt_format(const char *arg)
2100 {
2101 /* compatibility stuff for pgmyuv */
2102 if (!strcmp(arg, "pgmyuv")) {
2103 pgmyuv_compatibility_hack=1;
2104 // opt_image_format(arg);
2105 arg = "image2";
2106 }
2107
2108 file_iformat = av_find_input_format(arg);
2109 file_oformat = guess_format(arg, NULL, NULL);
2110 if (!file_iformat && !file_oformat) {
2111 fprintf(stderr, "Unknown input or output format: %s\n", arg);
2112 exit(1);
2113 }
2114 }
2115
2116 static void opt_video_bitrate(const char *arg)
2117 {
2118 video_bit_rate = atoi(arg) * 1000;
2119 }
2120
2121 static void opt_video_bitrate_tolerance(const char *arg)
2122 {
2123 video_bit_rate_tolerance = atoi(arg) * 1000;
2124 }
2125
2126 static void opt_video_bitrate_max(const char *arg)
2127 {
2128 video_rc_max_rate = atoi(arg) * 1000;
2129 }
2130
2131 static void opt_video_bitrate_min(const char *arg)
2132 {
2133 video_rc_min_rate = atoi(arg) * 1000;
2134 }
2135
2136 static void opt_video_buffer_size(const char *arg)
2137 {
2138 video_rc_buffer_size = atoi(arg) * 8*1024;
2139 }
2140
2141 static void opt_video_rc_eq(char *arg)
2142 {
2143 video_rc_eq = arg;
2144 }
2145
2146 static void opt_video_rc_override_string(char *arg)
2147 {
2148 video_rc_override_string = arg;
2149 }
2150
2151
2152 static void opt_workaround_bugs(const char *arg)
2153 {
2154 workaround_bugs = atoi(arg);
2155 }
2156
2157 static void opt_me_threshold(const char *arg)
2158 {
2159 me_threshold = atoi(arg);
2160 }
2161
2162 static void opt_mb_threshold(const char *arg)
2163 {
2164 mb_threshold = atoi(arg);
2165 }
2166
2167 static void opt_verbose(const char *arg)
2168 {
2169 verbose = atoi(arg);
2170 av_log_set_level(atoi(arg));
2171 }
2172
2173 static void opt_frame_rate(const char *arg)
2174 {
2175 if (parse_frame_rate(&frame_rate, &frame_rate_base, arg) < 0) {
2176 fprintf(stderr, "Incorrect frame rate\n");
2177 exit(1);
2178 }
2179 }
2180
2181 static void opt_frame_crop_top(const char *arg)
2182 {
2183 frame_topBand = atoi(arg);
2184 if (frame_topBand < 0) {
2185 fprintf(stderr, "Incorrect top crop size\n");
2186 exit(1);
2187 }
2188 if ((frame_topBand % 2) != 0) {
2189 fprintf(stderr, "Top crop size must be a multiple of 2\n");
2190 exit(1);
2191 }
2192 if ((frame_topBand) >= frame_height){
2193 fprintf(stderr, "Vertical crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");
2194 exit(1);
2195 }
2196 frame_height -= frame_topBand;
2197 }
2198
2199 static void opt_frame_crop_bottom(const char *arg)
2200 {
2201 frame_bottomBand = atoi(arg);
2202 if (frame_bottomBand < 0) {
2203 fprintf(stderr, "Incorrect bottom crop size\n");
2204 exit(1);
2205 }
2206 if ((frame_bottomBand % 2) != 0) {
2207 fprintf(stderr, "Bottom crop size must be a multiple of 2\n");
2208 exit(1);
2209 }
2210 if ((frame_bottomBand) >= frame_height){
2211 fprintf(stderr, "Vertical crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");
2212 exit(1);
2213 }
2214 frame_height -= frame_bottomBand;
2215 }
2216
2217 static void opt_frame_crop_left(const char *arg)
2218 {
2219 frame_leftBand = atoi(arg);
2220 if (frame_leftBand < 0) {
2221 fprintf(stderr, "Incorrect left crop size\n");
2222 exit(1);
2223 }
2224 if ((frame_leftBand % 2) != 0) {
2225 fprintf(stderr, "Left crop size must be a multiple of 2\n");
2226 exit(1);
2227 }
2228 if ((frame_leftBand) >= frame_width){
2229 fprintf(stderr, "Horizontal crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");
2230 exit(1);
2231 }
2232 frame_width -= frame_leftBand;
2233 }
2234
2235 static void opt_frame_crop_right(const char *arg)
2236 {
2237 frame_rightBand = atoi(arg);
2238 if (frame_rightBand < 0) {
2239 fprintf(stderr, "Incorrect right crop size\n");
2240 exit(1);
2241 }
2242 if ((frame_rightBand % 2) != 0) {
2243 fprintf(stderr, "Right crop size must be a multiple of 2\n");
2244 exit(1);
2245 }
2246 if ((frame_rightBand) >= frame_width){
2247 fprintf(stderr, "Horizontal crop dimensions are outside the range of the original image.\nRemember to crop first and scale second.\n");
2248 exit(1);
2249 }
2250 frame_width -= frame_rightBand;
2251 }
2252
2253 static void opt_frame_size(const char *arg)
2254 {
2255 if (parse_image_size(&frame_width, &frame_height, arg) < 0) {
2256 fprintf(stderr, "Incorrect frame size\n");
2257 exit(1);
2258 }
2259 if ((frame_width % 2) != 0 || (frame_height % 2) != 0) {
2260 fprintf(stderr, "Frame size must be a multiple of 2\n");
2261 exit(1);
2262 }
2263 }
2264
2265
2266 #define SCALEBITS 10
2267 #define ONE_HALF (1 << (SCALEBITS - 1))
2268 #define FIX(x) ((int) ((x) * (1<<SCALEBITS) + 0.5))
2269
2270 #define RGB_TO_Y(r, g, b) \
2271 ((FIX(0.29900) * (r) + FIX(0.58700) * (g) + \
2272 FIX(0.11400) * (b) + ONE_HALF) >> SCALEBITS)
2273
2274 #define RGB_TO_U(r1, g1, b1, shift)\
2275 (((- FIX(0.16874) * r1 - FIX(0.33126) * g1 + \
2276 FIX(0.50000) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
2277
2278 #define RGB_TO_V(r1, g1, b1, shift)\
2279 (((FIX(0.50000) * r1 - FIX(0.41869) * g1 - \
2280 FIX(0.08131) * b1 + (ONE_HALF << shift) - 1) >> (SCALEBITS + shift)) + 128)
2281
2282 static void opt_pad_color(const char *arg) {
2283 /* Input is expected to be six hex digits similar to
2284 how colors are expressed in html tags (but without the #) */
2285 int rgb = strtol(arg, NULL, 16);
2286 int r,g,b;
2287
2288 r = (rgb >> 16);
2289 g = ((rgb >> 8) & 255);
2290 b = (rgb & 255);
2291
2292 padcolor[0] = RGB_TO_Y(r,g,b);
2293 padcolor[1] = RGB_TO_U(r,g,b,0);
2294 padcolor[2] = RGB_TO_V(r,g,b,0);
2295 }
2296
2297 static void opt_frame_pad_top(const char *arg)
2298 {
2299 frame_padtop = atoi(arg);
2300 if (frame_padtop < 0) {
2301 fprintf(stderr, "Incorrect top pad size\n");
2302 exit(1);
2303 }
2304 if ((frame_padtop % 2) != 0) {
2305 fprintf(stderr, "Top pad size must be a multiple of 2\n");
2306 exit(1);
2307 }
2308 }
2309
2310 static void opt_frame_pad_bottom(const char *arg)
2311 {
2312 frame_padbottom = atoi(arg);
2313 if (frame_padbottom < 0) {
2314 fprintf(stderr, "Incorrect bottom pad size\n");
2315 exit(1);
2316 }
2317 if ((frame_padbottom % 2) != 0) {
2318 fprintf(stderr, "Bottom pad size must be a multiple of 2\n");
2319 exit(1);
2320 }
2321 }
2322
2323
2324 static void opt_frame_pad_left(const char *arg)
2325 {
2326 frame_padleft = atoi(arg);
2327 if (frame_padleft < 0) {
2328 fprintf(stderr, "Incorrect left pad size\n");
2329 exit(1);
2330 }
2331 if ((frame_padleft % 2) != 0) {
2332 fprintf(stderr, "Left pad size must be a multiple of 2\n");
2333 exit(1);
2334 }
2335 }
2336
2337
2338 static void opt_frame_pad_right(const char *arg)
2339 {
2340 frame_padright = atoi(arg);
2341 if (frame_padright < 0) {
2342 fprintf(stderr, "Incorrect right pad size\n");
2343 exit(1);
2344 }
2345 if ((frame_padright % 2) != 0) {
2346 fprintf(stderr, "Right pad size must be a multiple of 2\n");
2347 exit(1);
2348 }
2349 }
2350
2351
2352 static void opt_frame_pix_fmt(const char *arg)
2353 {
2354 frame_pix_fmt = avcodec_get_pix_fmt(arg);
2355 }
2356
2357 static void opt_frame_aspect_ratio(const char *arg)
2358 {
2359 int x = 0, y = 0;
2360 double ar = 0;
2361 const char *p;
2362
2363 p = strchr(arg, ':');
2364 if (p) {
2365 x = strtol(arg, (char **)&arg, 10);
2366 if (arg == p)
2367 y = strtol(arg+1, (char **)&arg, 10);
2368 if (x > 0 && y > 0)
2369 ar = (double)x / (double)y;
2370 } else
2371 ar = strtod(arg, (char **)&arg);
2372
2373 if (!ar) {
2374 fprintf(stderr, "Incorrect aspect ratio specification.\n");
2375 exit(1);
2376 }
2377 frame_aspect_ratio = ar;
2378 }
2379
2380 static void opt_gop_size(const char *arg)
2381 {
2382 gop_size = atoi(arg);
2383 }
2384
2385 static void opt_b_frames(const char *arg)
2386 {
2387 b_frames = atoi(arg);
2388 if (b_frames > FF_MAX_B_FRAMES) {
2389 fprintf(stderr, "\nCannot have more than %d B frames, increase FF_MAX_B_FRAMES.\n", FF_MAX_B_FRAMES);
2390 exit(1);
2391 } else if (b_frames < 1) {
2392 fprintf(stderr, "\nNumber of B frames must be higher than 0\n");
2393 exit(1);
2394 }
2395 }
2396
2397 static void opt_pre_me(const char *arg)
2398 {
2399 pre_me = atoi(arg);
2400 }
2401
2402 static void opt_qscale(const char *arg)
2403 {
2404 video_qscale = atof(arg);
2405 if (video_qscale < 0.01 ||
2406 video_qscale > 255) {
2407 fprintf(stderr, "qscale must be >= 0.01 and <= 255\n");
2408 exit(1);
2409 }
2410 }
2411
2412 static void opt_qsquish(const char *arg)
2413 {
2414 video_qsquish = atof(arg);
2415 if (video_qsquish < 0.0 ||
2416 video_qsquish > 99.0) {
2417 fprintf(stderr, "qsquish must be >= 0.0 and <= 99.0\n");
2418 exit(1);
2419 }
2420 }
2421
2422 static void opt_lmax(const char *arg)
2423 {
2424 video_lmax = atof(arg)*FF_QP2LAMBDA;
2425 }
2426
2427 static void opt_lmin(const char *arg)
2428 {
2429 video_lmin = atof(arg)*FF_QP2LAMBDA;
2430 }
2431
2432 static void opt_qmin(const char *arg)
2433 {
2434 video_qmin = atoi(arg);
2435 if (video_qmin < 1 ||
2436 video_qmin > 51) {
2437 fprintf(stderr, "qmin must be >= 1 and <= 51\n");
2438 exit(1);
2439 }
2440 }
2441
2442 static void opt_qmax(const char *arg)
2443 {
2444 video_qmax = atoi(arg);
2445 if (video_qmax < 1 ||
2446 video_qmax > 51) {
2447 fprintf(stderr, "qmax must be >= 1 and <= 51\n");
2448 exit(1);
2449 }
2450 }
2451
2452 static void opt_mb_lmin(const char *arg)
2453 {
2454 video_mb_lmin = atof(arg)*FF_QP2LAMBDA;
2455 if (video_mb_lmin < 1 ||
2456 video_mb_lmin > FF_LAMBDA_MAX) {
2457 fprintf(stderr, "mblmin must be >= 1 and <= %d\n", FF_LAMBDA_MAX / FF_QP2LAMBDA);
2458 exit(1);
2459 }
2460 }
2461
2462 static void opt_mb_lmax(const char *arg)
2463 {
2464 video_mb_lmax = atof(arg)*FF_QP2LAMBDA;
2465 if (video_mb_lmax < 1 ||
2466 video_mb_lmax > FF_LAMBDA_MAX) {
2467 fprintf(stderr, "mblmax must be >= 1 and <= %d\n", FF_LAMBDA_MAX / FF_QP2LAMBDA);
2468 exit(1);
2469 }
2470 }
2471
2472 static void opt_qdiff(const char *arg)
2473 {
2474 video_qdiff = atoi(arg);
2475 if (video_qdiff < 0 ||
2476 video_qdiff > 31) {
2477 fprintf(stderr, "qdiff must be >= 1 and <= 31\n");
2478 exit(1);
2479 }
2480 }
2481
2482 static void opt_qblur(const char *arg)
2483 {
2484 video_qblur = atof(arg);
2485 }
2486
2487 static void opt_qcomp(const char *arg)
2488 {
2489 video_qcomp = atof(arg);
2490 }
2491
2492 static void opt_rc_initial_cplx(const char *arg)
2493 {
2494 video_rc_initial_cplx = atof(arg);
2495 }
2496 static void opt_b_qfactor(const char *arg)
2497 {
2498 video_b_qfactor = atof(arg);
2499 }
2500 static void opt_i_qfactor(const char *arg)
2501 {
2502 video_i_qfactor = atof(arg);
2503 }
2504 static void opt_b_qoffset(const char *arg)
2505 {
2506 video_b_qoffset = atof(arg);
2507 }
2508 static void opt_i_qoffset(const char *arg)
2509 {
2510 video_i_qoffset = atof(arg);
2511 }
2512
2513 static void opt_ibias(const char *arg)
2514 {
2515 video_intra_quant_bias = atoi(arg);
2516 }
2517 static void opt_pbias(const char *arg)
2518 {
2519 video_inter_quant_bias = atoi(arg);
2520 }
2521
2522 static void opt_packet_size(const char *arg)
2523 {
2524 packet_size= atoi(arg);
2525 }
2526
2527 static void opt_error_rate(const char *arg)
2528 {
2529 error_rate= atoi(arg);
2530 }
2531
2532 static void opt_strict(const char *arg)
2533 {
2534 strict= atoi(arg);
2535 }
2536
2537 static void opt_top_field_first(const char *arg)
2538 {
2539 top_field_first= atoi(arg);
2540 }
2541
2542 static void opt_sc_threshold(const char *arg)
2543 {
2544 sc_threshold= atoi(arg);
2545 }
2546
2547 static void opt_me_range(const char *arg)
2548 {
2549 me_range = atoi(arg);
2550 }
2551
2552 static void opt_thread_count(const char *arg)
2553 {
2554 thread_count= atoi(arg);
2555 #if !defined(HAVE_THREADS)
2556 if (verbose >= 0)
2557 fprintf(stderr, "Warning: not compiled with thread support, using thread emulation\n");
2558 #endif
2559 }
2560
2561 static void opt_audio_bitrate(const char *arg)
2562 {
2563 audio_bit_rate = atoi(arg) * 1000;
2564 }
2565
2566 static void opt_audio_rate(const char *arg)
2567 {
2568 audio_sample_rate = atoi(arg);
2569 }
2570
2571 static void opt_audio_channels(const char *arg)
2572 {
2573 audio_channels = atoi(arg);
2574 }
2575
2576 static void opt_video_device(const char *arg)
2577 {
2578 video_device = av_strdup(arg);
2579 }
2580
2581 static void opt_grab_device(const char *arg)
2582 {
2583 grab_device = av_strdup(arg);
2584 }
2585
2586 static void opt_video_channel(const char *arg)
2587 {
2588 video_channel = strtol(arg, NULL, 0);
2589 }
2590
2591 static void opt_video_standard(const char *arg)
2592 {
2593 video_standard = av_strdup(arg);
2594 }
2595
2596 static void opt_audio_device(const char *arg)
2597 {
2598 audio_device = av_strdup(arg);
2599 }
2600
2601 static void opt_codec(int *pstream_copy, int *pcodec_id,
2602 int codec_type, const char *arg)
2603 {
2604 AVCodec *p;
2605
2606 if (!strcmp(arg, "copy")) {
2607 *pstream_copy = 1;
2608 } else {
2609 p = first_avcodec;
2610 while (p) {
2611 if (!strcmp(p->name, arg) && p->type == codec_type)
2612 break;
2613 p = p->next;
2614 }
2615 if (p == NULL) {
2616 fprintf(stderr, "Unknown codec '%s'\n", arg);
2617 exit(1);
2618 } else {
2619 *pcodec_id = p->id;
2620 }
2621 }
2622 }
2623
2624 static void opt_audio_codec(const char *arg)
2625 {
2626 opt_codec(&audio_stream_copy, &audio_codec_id, CODEC_TYPE_AUDIO, arg);
2627 }
2628
2629 static void opt_audio_tag(const char *arg)
2630 {
2631 char *tail;
2632 audio_codec_tag= strtol(arg, &tail, 0);
2633
2634 if(!tail || *tail)
2635 audio_codec_tag= arg[0] + (arg[1]<<8) + (arg[2]<<16) + (arg[3]<<24);
2636 }
2637
2638 static void opt_video_tag(const char *arg)
2639 {
2640 char *tail;
2641 video_codec_tag= strtol(arg, &tail, 0);
2642
2643 if(!tail || *tail)
2644 video_codec_tag= arg[0] + (arg[1]<<8) + (arg[2]<<16) + (arg[3]<<24);
2645 }
2646
2647 static void add_frame_hooker(const char *arg)
2648 {
2649 int argc = 0;
2650 char *argv[64];
2651 int i;
2652 char *args = av_strdup(arg);
2653
2654 using_vhook = 1;
2655
2656 argv[0] = strtok(args, " ");
2657 while (argc < 62 && (argv[++argc] = strtok(NULL, " "))) {
2658 }
2659
2660 i = frame_hook_add(argc, argv);
2661
2662 if (i != 0) {
2663 fprintf(stderr, "Failed to add video hook function: %s\n", arg);
2664 exit(1);
2665 }
2666 }
2667
2668 const char *motion_str[] = {
2669 "zero",
2670 "full",
2671 "log",
2672 "phods",
2673 "epzs",
2674 "x1",
2675 "hex",
2676 "umh",
2677 "iter",
2678 NULL,
2679 };
2680
2681 static void opt_motion_estimation(const char *arg)
2682 {
2683 const char **p;
2684 p = motion_str;
2685 for(;;) {
2686 if (!*p) {
2687 fprintf(stderr, "Unknown motion estimation method '%s'\n", arg);
2688 exit(1);
2689 }
2690 if (!strcmp(*p, arg))
2691 break;
2692 p++;
2693 }
2694 me_method = (p - motion_str) + 1;
2695 }
2696
2697 static void opt_video_codec(const char *arg)
2698 {
2699 opt_codec(&video_stream_copy, &video_codec_id, CODEC_TYPE_VIDEO, arg);
2700 }
2701
2702 static void opt_subtitle_codec(const char *arg)
2703 {
2704 opt_codec(&subtitle_stream_copy, &subtitle_codec_id, CODEC_TYPE_SUBTITLE, arg);
2705 }
2706
2707 static void opt_map(const char *arg)
2708 {
2709 AVStreamMap *m;
2710 const char *p;
2711
2712 p = arg;
2713 m = &stream_maps[nb_stream_maps++];
2714
2715 m->file_index = strtol(arg, (char **)&p, 0);
2716 if (*p)
2717 p++;
2718
2719 m->stream_index = strtol(p, (char **)&p, 0);
2720 if (*p) {
2721 p++;
2722 m->sync_file_index = strtol(p, (char **)&p, 0);
2723 if (*p)
2724 p++;
2725 m->sync_stream_index = strtol(p, (char **)&p, 0);
2726 } else {
2727 m->sync_file_index = m->file_index;
2728 m->sync_stream_index = m->stream_index;
2729 }
2730 }
2731
2732 static void opt_map_meta_data(const char *arg)
2733 {
2734 AVMetaDataMap *m;
2735 const char *p;
2736
2737 p = arg;
2738 m = &meta_data_maps[nb_meta_data_maps++];
2739
2740 m->out_file = strtol(arg, (char **)&p, 0);
2741 if (*p)
2742 p++;
2743
2744 m->in_file = strtol(p, (char **)&p, 0);
2745 }
2746
2747 static void opt_recording_time(const char *arg)
2748 {
2749 recording_time = parse_date(arg, 1);
2750 }
2751
2752 static void opt_start_time(const char *arg)
2753 {
2754 start_time = parse_date(arg, 1);
2755 }
2756
2757 static void opt_rec_timestamp(const char *arg)
2758 {
2759 rec_timestamp = parse_date(arg, 0) / 1000000;
2760 }
2761
2762 static void opt_input_ts_offset(const char *arg)
2763 {
2764 input_ts_offset = parse_date(arg, 1);
2765 }
2766
2767 static void opt_input_file(const char *filename)
2768 {
2769 AVFormatContext *ic;
2770 AVFormatParameters params, *ap = &params;
2771 int err, i, ret, rfps, rfps_base;
2772 int64_t timestamp;
2773
2774 if (!strcmp(filename, "-"))
2775 filename = "pipe:";
2776
2777 using_stdin |= !strncmp(filename, "pipe:", 5) ||
2778 !strcmp( filename, "/dev/stdin" );
2779
2780 /* get default parameters from command line */
2781 memset(ap, 0, sizeof(*ap));
2782 ap->sample_rate = audio_sample_rate;
2783 ap->channels = audio_channels;
2784 ap->time_base.den = frame_rate;
2785 ap->time_base.num = frame_rate_base;
2786 ap->width = frame_width + frame_padleft + frame_padright;
2787 ap->height = frame_height + frame_padtop + frame_padbottom;
2788 ap->image_format = image_format;
2789 ap->pix_fmt = frame_pix_fmt;
2790 ap->device = grab_device;
2791 ap->channel = video_channel;
2792 ap->standard = video_standard;
2793 ap->video_codec_id = video_codec_id;
2794 ap->audio_codec_id = audio_codec_id;
2795 if(pgmyuv_compatibility_hack)
2796 ap->video_codec_id= CODEC_ID_PGMYUV;
2797
2798 /* open the input file with generic libav function */
2799 err = av_open_input_file(&ic, filename, file_iformat, 0, ap);
2800 if (err < 0) {
2801 print_error(filename, err);
2802 exit(1);
2803 }
2804
2805 if(genpts)
2806 ic->flags|= AVFMT_FLAG_GENPTS;
2807
2808 /* If not enough info to get the stream parameters, we decode the
2809 first frames to get it. (used in mpeg case for example) */
2810 ret = av_find_stream_info(ic);
2811 if (ret < 0 && verbose >= 0) {
2812 fprintf(stderr, "%s: could not find codec parameters\n", filename);
2813 exit(1);
2814 }
2815
2816 timestamp = start_time;
2817 /* add the stream start time */
2818 if (ic->start_time != AV_NOPTS_VALUE)
2819 timestamp += ic->start_time;
2820
2821 /* if seeking requested, we execute it */
2822 if (start_time != 0) {
2823 ret = av_seek_frame(ic, -1, timestamp, AVSEEK_FLAG_BACKWARD);
2824 if (ret < 0) {
2825 fprintf(stderr, "%s: could not seek to position %0.3f\n",
2826 filename, (double)timestamp / AV_TIME_BASE);
2827 }
2828 /* reset seek info */
2829 start_time = 0;
2830 }
2831
2832 /* update the current parameters so that they match the one of the input stream */
2833 for(i=0;i<ic->nb_streams;i++) {
2834 int j;
2835 AVCodecContext *enc = ic->streams[i]->codec;
2836 #if defined(HAVE_THREADS)
2837 if(thread_count>1)
2838 avcodec_thread_init(enc, thread_count);
2839 #endif
2840 enc->thread_count= thread_count;
2841 switch(enc->codec_type) {
2842 case CODEC_TYPE_AUDIO:
2843 for(j=0; j<opt_name_count; j++){
2844 AVOption *opt;
2845 double d= av_get_double(avctx_opts, opt_names[j], &opt);
2846 if(d==d && (opt->flags&AV_OPT_FLAG_AUDIO_PARAM) && (opt->flags&AV_OPT_FLAG_DECODING_PARAM))
2847 av_set_double(enc, opt_names[j], d);
2848 }
2849 //fprintf(stderr, "\nInput Audio channels: %d", enc->channels);
2850 audio_channels = enc->channels;
2851 audio_sample_rate = enc->sample_rate;
2852 if(audio_disable)
2853 ic->streams[i]->discard= AVDISCARD_ALL;
2854 break;
2855 case CODEC_TYPE_VIDEO:
2856 for(j=0; j<opt_name_count; j++){
2857 AVOption *opt;
2858 double d= av_get_double(avctx_opts, opt_names[j], &opt);
2859 if(d==d && (opt->flags&AV_OPT_FLAG_VIDEO_PARAM) && (opt->flags&AV_OPT_FLAG_DECODING_PARAM))
2860 av_set_double(enc, opt_names[j], d);
2861 }
2862 frame_height = enc->height;
2863 frame_width = enc->width;
2864 frame_aspect_ratio = av_q2d(enc->sample_aspect_ratio) * enc->width / enc->height;
2865 frame_pix_fmt = enc->pix_fmt;
2866 rfps = ic->streams[i]->r_frame_rate.num;
2867 rfps_base = ic->streams[i]->r_frame_rate.den;
2868 enc->workaround_bugs = workaround_bugs;
2869 if(enc->lowres) enc->flags |= CODEC_FLAG_EMU_EDGE;
2870 if(me_threshold)
2871 enc->debug |= FF_DEBUG_MV;
2872
2873 if (enc->time_base.den != rfps || enc->time_base.num != rfps_base) {
2874
2875 if (verbose >= 0)
2876 fprintf(stderr,"\nSeems that stream %d comes from film source: %2.2f (%d/%d) -> %2.2f (%d/%d)\n",
2877 i, (float)enc->time_base.den / enc->time_base.num, enc->time_base.den, enc->time_base.num,
2878
2879 (float)rfps / rfps_base, rfps, rfps_base);
2880 }
2881 /* update the current frame rate to match the stream frame rate */
2882 frame_rate = rfps;
2883 frame_rate_base = rfps_base;
2884
2885 enc->rate_emu = rate_emu;
2886 if(video_disable)
2887 ic->streams[i]->discard= AVDISCARD_ALL;
2888 else if(video_discard)
2889 ic->streams[i]->discard= video_discard;
2890 break;
2891 case CODEC_TYPE_DATA:
2892 break;
2893 case CODEC_TYPE_SUBTITLE:
2894 break;
2895 case CODEC_TYPE_UNKNOWN:
2896 break;
2897 default:
2898 av_abort();
2899 }
2900 }
2901
2902 input_files[nb_input_files] = ic;
2903 input_files_ts_offset[nb_input_files] = input_ts_offset - (copy_ts ? 0 : timestamp);
2904 /* dump the file content */
2905 if (verbose >= 0)
2906 dump_format(ic, nb_input_files, filename, 0);
2907
2908 nb_input_files++;
2909 file_iformat = NULL;
2910 file_oformat = NULL;
2911 image_format = NULL;
2912
2913 grab_device = NULL;
2914 video_channel = 0;
2915
2916 rate_emu = 0;
2917 }
2918
2919 static void opt_grab(const char *arg)
2920 {
2921 file_iformat = av_find_input_format(arg);
2922 opt_input_file("");
2923 }
2924
2925 static void check_audio_video_inputs(int *has_video_ptr, int *has_audio_ptr)
2926 {
2927 int has_video, has_audio, i, j;
2928 AVFormatContext *ic;
2929
2930 has_video = 0;
2931 has_audio = 0;
2932 for(j=0;j<nb_input_files;j++) {
2933 ic = input_files[j];
2934 for(i=0;i<ic->nb_streams;i++) {
2935 AVCodecContext *enc = ic->streams[i]->codec;
2936 switch(enc->codec_type) {
2937 case CODEC_TYPE_AUDIO:
2938 has_audio = 1;
2939 break;
2940 case CODEC_TYPE_VIDEO:
2941 has_video = 1;
2942 break;
2943 case CODEC_TYPE_DATA:
2944 case CODEC_TYPE_UNKNOWN:
2945 case CODEC_TYPE_SUBTITLE:
2946 break;
2947 default:
2948 av_abort();
2949 }
2950 }
2951 }
2952 *has_video_ptr = has_video;
2953 *has_audio_ptr = has_audio;
2954 }
2955
2956 static void new_video_stream(AVFormatContext *oc)
2957 {
2958 AVStream *st;
2959 AVCodecContext *video_enc;
2960 int codec_id;
2961
2962 st = av_new_stream(oc, oc->nb_streams);
2963 if (!st) {
2964 fprintf(stderr, "Could not alloc stream\n");
2965 exit(1);
2966 }
2967 #if defined(HAVE_THREADS)
2968 if(thread_count>1)
2969 avcodec_thread_init(st->codec, thread_count);
2970 #endif
2971
2972 video_enc = st->codec;
2973
2974 if(video_codec_tag)
2975 video_enc->codec_tag= video_codec_tag;
2976
2977 if( (video_global_header&1)
2978 || (video_global_header==0 && (oc->oformat->flags & AVFMT_GLOBALHEADER))){
2979 video_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
2980 avctx_opts->flags|= CODEC_FLAG_GLOBAL_HEADER;
2981 }
2982 if(video_global_header&2){
2983 video_enc->flags2 |= CODEC_FLAG2_LOCAL_HEADER;
2984 avctx_opts->flags2|= CODEC_FLAG2_LOCAL_HEADER;
2985 }
2986
2987 if (video_stream_copy) {
2988 st->stream_copy = 1;
2989 video_enc->codec_type = CODEC_TYPE_VIDEO;
2990 } else {
2991 char *p;
2992 int i;
2993 AVCodec *codec;
2994
2995 codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, CODEC_TYPE_VIDEO);
2996 if (video_codec_id != CODEC_ID_NONE)
2997 codec_id = video_codec_id;
2998
2999 video_enc->codec_id = codec_id;
3000 codec = avcodec_find_encoder(codec_id);
3001
3002 for(i=0; i<opt_name_count; i++){
3003 AVOption *opt;
3004 double d= av_get_double(avctx_opts, opt_names[i], &opt);
3005 if(d==d && (opt->flags&AV_OPT_FLAG_VIDEO_PARAM) && (opt->flags&AV_OPT_FLAG_ENCODING_PARAM))
3006 av_set_double(video_enc, opt_names[i], d);
3007 }
3008
3009 video_enc->bit_rate = video_bit_rate;
3010 video_enc->bit_rate_tolerance = video_bit_rate_tolerance;
3011 video_enc->time_base.den = frame_rate;
3012 video_enc->time_base.num = frame_rate_base;
3013 if(codec && codec->supported_framerates){
3014 const AVRational *p= codec->supported_framerates;
3015 AVRational req= (AVRational){frame_rate, frame_rate_base};
3016 const AVRational *best=NULL;
3017 AVRational best_error= (AVRational){INT_MAX, 1};
3018 for(; p->den!=0; p++){
3019 AVRational error= av_sub_q(req, *p);
3020 if(error.num <0) error.num *= -1;
3021 if(av_cmp_q(error, best_error) < 0){
3022 best_error= error;
3023 best= p;
3024 }
3025 }
3026 video_enc->time_base.den= best->num;
3027 video_enc->time_base.num= best->den;
3028 }
3029
3030 video_enc->width = frame_width + frame_padright + frame_padleft;
3031 video_enc->height = frame_height + frame_padtop + frame_padbottom;
3032 video_enc->sample_aspect_ratio = av_d2q(frame_aspect_ratio*frame_height/frame_width, 255);
3033 video_enc->pix_fmt = frame_pix_fmt;
3034
3035 if(codec && codec->pix_fmts){
3036 const enum PixelFormat *p= codec->pix_fmts;
3037 for(; *p!=-1; p++){
3038 if(*p == video_enc->pix_fmt)
3039 break;
3040 }
3041 if(*p == -1)
3042 video_enc->pix_fmt = codec->pix_fmts[0];
3043 }
3044
3045 if (!intra_only)
3046 video_enc->gop_size = gop_size;
3047 else
3048 video_enc->gop_size = 0;
3049 if (video_qscale || same_quality) {
3050 video_enc->flags |= CODEC_FLAG_QSCALE;
3051 video_enc->global_quality=
3052 st->quality = FF_QP2LAMBDA * video_qscale;
3053 }
3054
3055 if(intra_matrix)
3056 video_enc->intra_matrix = intra_matrix;
3057 if(inter_matrix)
3058 video_enc->inter_matrix = inter_matrix;
3059
3060 video_enc->pre_me = pre_me;
3061
3062 if (b_frames) {
3063 video_enc->max_b_frames = b_frames;
3064 video_enc->b_quant_factor = 2.0;
3065 }
3066 video_enc->qmin = video_qmin;
3067 video_enc->qmax = video_qmax;
3068 video_enc->lmin = video_lmin;
3069 video_enc->lmax = video_lmax;
3070 video_enc->rc_qsquish = video_qsquish;
3071 video_enc->mb_lmin = video_mb_lmin;
3072 video_enc->mb_lmax = video_mb_lmax;
3073 video_enc->max_qdiff = video_qdiff;
3074 video_enc->qblur = video_qblur;
3075 video_enc->qcompress = video_qcomp;
3076 video_enc->rc_eq = video_rc_eq;
3077 video_enc->workaround_bugs = workaround_bugs;
3078 video_enc->thread_count = thread_count;
3079 p= video_rc_override_string;
3080 for(i=0; p; i++){
3081 int start, end, q;
3082 int e=sscanf(p, "%d,%d,%d", &start, &end, &q);
3083 if(e!=3){
3084 fprintf(stderr, "error parsing rc_override\n");
3085 exit(1);
3086 }
3087 video_enc->rc_override=
3088 av_realloc(video_enc->rc_override,
3089 sizeof(RcOverride)*(i+1));
3090 video_enc->rc_override[i].start_frame= start;
3091 video_enc->rc_override[i].end_frame = end;
3092 if(q>0){
3093 video_enc->rc_override[i].qscale= q;
3094 video_enc->rc_override[i].quality_factor= 1.0;
3095 }
3096 else{
3097 video_enc->rc_override[i].qscale= 0;
3098 video_enc->rc_override[i].quality_factor= -q/100.0;
3099 }
3100 p= strchr(p, '/');
3101 if(p) p++;
3102 }
3103 video_enc->rc_override_count=i;
3104
3105 video_enc->rc_max_rate = video_rc_max_rate;
3106 video_enc->rc_min_rate = video_rc_min_rate;
3107 video_enc->rc_buffer_size = video_rc_buffer_size;
3108 video_enc->rc_initial_buffer_occupancy = video_rc_buffer_size*3/4;
3109 video_enc->rc_buffer_aggressivity= video_rc_buffer_aggressivity;
3110 video_enc->rc_initial_cplx= video_rc_initial_cplx;
3111 video_enc->i_quant_factor = video_i_qfactor;
3112 video_enc->b_quant_factor = video_b_qfactor;
3113 video_enc->i_quant_offset = video_i_qoffset;
3114 video_enc->b_quant_offset = video_b_qoffset;
3115 video_enc->intra_quant_bias = video_intra_quant_bias;
3116 video_enc->inter_quant_bias = video_inter_quant_bias;
3117 video_enc->me_threshold= me_threshold;
3118 video_enc->mb_threshold= mb_threshold;
3119 video_enc->intra_dc_precision= intra_dc_precision - 8;
3120 video_enc->strict_std_compliance = strict;
3121 video_enc->error_rate = error_rate;
3122 video_enc->scenechange_threshold= sc_threshold;
3123 video_enc->me_range = me_range;
3124 video_enc->me_penalty_compensation= me_penalty_compensation;
3125 video_enc->frame_skip_threshold= frame_skip_threshold;
3126 video_enc->frame_skip_factor= frame_skip_factor;
3127 video_enc->frame_skip_exp= frame_skip_exp;
3128
3129 if(packet_size){
3130 video_enc->rtp_mode= 1;
3131 video_enc->rtp_payload_size= packet_size;
3132 }
3133
3134 if (do_psnr)
3135 video_enc->flags|= CODEC_FLAG_PSNR;
3136
3137 video_enc->me_method = me_method;
3138
3139 /* two pass mode */
3140 if (do_pass) {
3141 if (do_pass == 1) {
3142 video_enc->flags |= CODEC_FLAG_PASS1;
3143 } else {
3144 video_enc->flags |= CODEC_FLAG_PASS2;
3145 }
3146 }
3147 }
3148
3149 /* reset some key parameters */
3150 video_disable = 0;
3151 video_codec_id = CODEC_ID_NONE;
3152 video_stream_copy = 0;
3153 }
3154
3155 static void new_audio_stream(AVFormatContext *oc)
3156 {
3157 AVStream *st;
3158 AVCodecContext *audio_enc;
3159 int codec_id, i;
3160
3161 st = av_new_stream(oc, oc->nb_streams);
3162 if (!st) {
3163 fprintf(stderr, "Could not alloc stream\n");
3164 exit(1);
3165 }
3166 #if defined(HAVE_THREADS)
3167 if(thread_count>1)
3168 avcodec_thread_init(st->codec, thread_count);
3169 #endif
3170
3171 audio_enc = st->codec;
3172 audio_enc->codec_type = CODEC_TYPE_AUDIO;
3173
3174 if(audio_codec_tag)
3175 audio_enc->codec_tag= audio_codec_tag;
3176
3177 if (oc->oformat->flags & AVFMT_GLOBALHEADER) {
3178 audio_enc->flags |= CODEC_FLAG_GLOBAL_HEADER;
3179 avctx_opts->flags|= CODEC_FLAG_GLOBAL_HEADER;
3180 }
3181 if (audio_stream_copy) {
3182 st->stream_copy = 1;
3183 audio_enc->channels = audio_channels;
3184 } else {
3185 codec_id = av_guess_codec(oc->oformat, NULL, oc->filename, NULL, CODEC_TYPE_AUDIO);
3186
3187 for(i=0; i<opt_name_count; i++){
3188 AVOption *opt;
3189 double d= av_get_double(avctx_opts, opt_names[i], &opt);
3190 if(d==d && (opt->flags&AV_OPT_FLAG_AUDIO_PARAM) && (opt->flags&AV_OPT_FLAG_ENCODING_PARAM))
3191 av_set_double(audio_enc, opt_names[i], d);
3192 }
3193
3194 if (audio_codec_id != CODEC_ID_NONE)
3195 codec_id = audio_codec_id;
3196 audio_enc->codec_id = codec_id;
3197
3198 audio_enc->bit_rate = audio_bit_rate;
3199 if (audio_qscale > QSCALE_NONE) {
3200 audio_enc->flags |= CODEC_FLAG_QSCALE;
3201 audio_enc->global_quality = st->quality = FF_QP2LAMBDA * audio_qscale;
3202 }
3203 audio_enc->strict_std_compliance = strict;
3204 audio_enc->thread_count = thread_count;
3205 /* For audio codecs other than AC3 or DTS we limit */
3206 /* the number of coded channels to stereo */
3207 if (audio_channels > 2 && codec_id != CODEC_ID_AC3
3208 && codec_id != CODEC_ID_DTS) {
3209 audio_enc->channels = 2;
3210 } else
3211 audio_enc->channels = audio_channels;
3212 }
3213 audio_enc->sample_rate = audio_sample_rate;
3214 audio_enc->time_base= (AVRational){1, audio_sample_rate};
3215 if (audio_language) {
3216 pstrcpy(st->language, sizeof(st->language), audio_language);
3217 av_free(audio_language);
3218 audio_language = NULL;
3219 }
3220
3221 /* reset some key parameters */
3222 audio_disable = 0;
3223 audio_codec_id = CODEC_ID_NONE;
3224 audio_stream_copy = 0;
3225 }
3226
3227 static void opt_new_subtitle_stream(void)
3228 {
3229 AVFormatContext *oc;
3230 AVStream *st;
3231 AVCodecContext *subtitle_enc;
3232 int i;
3233
3234 if (nb_output_files <= 0) {
3235 fprintf(stderr, "At least one output file must be specified\n");
3236 exit(1);
3237 }
3238 oc = output_files[nb_output_files - 1];
3239
3240 st = av_new_stream(oc, oc->nb_streams);
3241 if (!st) {
3242 fprintf(stderr, "Could not alloc stream\n");
3243 exit(1);
3244 }
3245
3246 subtitle_enc = st->codec;
3247 subtitle_enc->codec_type = CODEC_TYPE_SUBTITLE;
3248 if (subtitle_stream_copy) {
3249 st->stream_copy = 1;
3250 } else {
3251 for(i=0; i<opt_name_count; i++){
3252 AVOption *opt;
3253 double d= av_get_double(avctx_opts, opt_names[i], &opt);
3254 if(d==d && (opt->flags&AV_OPT_FLAG_SUBTITLE_PARAM) && (opt->flags&AV_OPT_FLAG_ENCODING_PARAM))
3255 av_set_double(subtitle_enc, opt_names[i], d);
3256 }
3257 subtitle_enc->codec_id = subtitle_codec_id;
3258 }
3259
3260 if (subtitle_language) {
3261 pstrcpy(st->language, sizeof(st->language), subtitle_language);
3262 av_free(subtitle_language);
3263 subtitle_language = NULL;
3264 }
3265
3266 subtitle_codec_id = CODEC_ID_NONE;
3267 subtitle_stream_copy = 0;
3268 }
3269
3270 static void opt_new_audio_stream(void)
3271 {
3272 AVFormatContext *oc;
3273 if (nb_output_files <= 0) {
3274 fprintf(stderr, "At least one output file must be specified\n");
3275 exit(1);
3276 }
3277 oc = output_files[nb_output_files - 1];
3278 new_audio_stream(oc);
3279 }
3280
3281 static void opt_new_video_stream(void)
3282 {
3283 AVFormatContext *oc;
3284 if (nb_output_files <= 0) {
3285 fprintf