a628fe637d602ccc3942397081d9616cc4107038
[ffmpeg.git] / ffmpeg.c
1 /*
2  * Copyright (c) 2000-2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * multimedia converter based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <ctype.h>
28 #include <string.h>
29 #include <math.h>
30 #include <stdlib.h>
31 #include <errno.h>
32 #include <limits.h>
33 #if HAVE_ISATTY
34 #if HAVE_IO_H
35 #include <io.h>
36 #endif
37 #if HAVE_UNISTD_H
38 #include <unistd.h>
39 #endif
40 #endif
41 #include "libavformat/avformat.h"
42 #include "libavdevice/avdevice.h"
43 #include "libswscale/swscale.h"
44 #include "libswresample/swresample.h"
45 #include "libavutil/opt.h"
46 #include "libavutil/channel_layout.h"
47 #include "libavutil/parseutils.h"
48 #include "libavutil/samplefmt.h"
49 #include "libavutil/fifo.h"
50 #include "libavutil/intreadwrite.h"
51 #include "libavutil/dict.h"
52 #include "libavutil/mathematics.h"
53 #include "libavutil/pixdesc.h"
54 #include "libavutil/avstring.h"
55 #include "libavutil/libm.h"
56 #include "libavutil/imgutils.h"
57 #include "libavutil/timestamp.h"
58 #include "libavutil/bprint.h"
59 #include "libavutil/time.h"
60 #include "libavformat/os_support.h"
61
62 #include "libavformat/ffm.h" // not public API
63
64 # include "libavfilter/avcodec.h"
65 # include "libavfilter/avfilter.h"
66 # include "libavfilter/buffersrc.h"
67 # include "libavfilter/buffersink.h"
68
69 #if HAVE_SYS_RESOURCE_H
70 #include <sys/time.h>
71 #include <sys/types.h>
72 #include <sys/resource.h>
73 #elif HAVE_GETPROCESSTIMES
74 #include <windows.h>
75 #endif
76 #if HAVE_GETPROCESSMEMORYINFO
77 #include <windows.h>
78 #include <psapi.h>
79 #endif
80
81 #if HAVE_SYS_SELECT_H
82 #include <sys/select.h>
83 #endif
84
85 #if HAVE_TERMIOS_H
86 #include <fcntl.h>
87 #include <sys/ioctl.h>
88 #include <sys/time.h>
89 #include <termios.h>
90 #elif HAVE_KBHIT
91 #include <conio.h>
92 #endif
93
94 #if HAVE_PTHREADS
95 #include <pthread.h>
96 #endif
97
98 #include <time.h>
99
100 #include "ffmpeg.h"
101 #include "cmdutils.h"
102
103 #include "libavutil/avassert.h"
104
105 const char program_name[] = "ffmpeg";
106 const int program_birth_year = 2000;
107
108 static FILE *vstats_file;
109
110 const char *const forced_keyframes_const_names[] = {
111     "n",
112     "n_forced",
113     "prev_forced_n",
114     "prev_forced_t",
115     "t",
116     NULL
117 };
118
119 static void do_video_stats(OutputStream *ost, int frame_size);
120 static int64_t getutime(void);
121 static int64_t getmaxrss(void);
122
123 static int run_as_daemon  = 0;
124 static int64_t video_size = 0;
125 static int64_t audio_size = 0;
126 static int64_t subtitle_size = 0;
127 static int64_t extra_size = 0;
128 static int nb_frames_dup = 0;
129 static int nb_frames_drop = 0;
130 static int64_t decode_error_stat[2];
131
132 static int current_time;
133 AVIOContext *progress_avio = NULL;
134
135 static uint8_t *subtitle_out;
136
137 #if HAVE_PTHREADS
138 /* signal to input threads that they should exit; set by the main thread */
139 static int transcoding_finished;
140 #endif
141
142 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
143
144 InputStream **input_streams = NULL;
145 int        nb_input_streams = 0;
146 InputFile   **input_files   = NULL;
147 int        nb_input_files   = 0;
148
149 OutputStream **output_streams = NULL;
150 int         nb_output_streams = 0;
151 OutputFile   **output_files   = NULL;
152 int         nb_output_files   = 0;
153
154 FilterGraph **filtergraphs;
155 int        nb_filtergraphs;
156
157 #if HAVE_TERMIOS_H
158
159 /* init terminal so that we can grab keys */
160 static struct termios oldtty;
161 static int restore_tty;
162 #endif
163
164 static void free_input_threads(void);
165
166
167 /* sub2video hack:
168    Convert subtitles to video with alpha to insert them in filter graphs.
169    This is a temporary solution until libavfilter gets real subtitles support.
170  */
171
172 static int sub2video_get_blank_frame(InputStream *ist)
173 {
174     int ret;
175     AVFrame *frame = ist->sub2video.frame;
176
177     av_frame_unref(frame);
178     ist->sub2video.frame->width  = ist->sub2video.w;
179     ist->sub2video.frame->height = ist->sub2video.h;
180     ist->sub2video.frame->format = AV_PIX_FMT_RGB32;
181     if ((ret = av_frame_get_buffer(frame, 32)) < 0)
182         return ret;
183     memset(frame->data[0], 0, frame->height * frame->linesize[0]);
184     return 0;
185 }
186
187 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
188                                 AVSubtitleRect *r)
189 {
190     uint32_t *pal, *dst2;
191     uint8_t *src, *src2;
192     int x, y;
193
194     if (r->type != SUBTITLE_BITMAP) {
195         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
196         return;
197     }
198     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
199         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
200         return;
201     }
202
203     dst += r->y * dst_linesize + r->x * 4;
204     src = r->pict.data[0];
205     pal = (uint32_t *)r->pict.data[1];
206     for (y = 0; y < r->h; y++) {
207         dst2 = (uint32_t *)dst;
208         src2 = src;
209         for (x = 0; x < r->w; x++)
210             *(dst2++) = pal[*(src2++)];
211         dst += dst_linesize;
212         src += r->pict.linesize[0];
213     }
214 }
215
216 static void sub2video_push_ref(InputStream *ist, int64_t pts)
217 {
218     AVFrame *frame = ist->sub2video.frame;
219     int i;
220
221     av_assert1(frame->data[0]);
222     ist->sub2video.last_pts = frame->pts = pts;
223     for (i = 0; i < ist->nb_filters; i++)
224         av_buffersrc_add_frame_flags(ist->filters[i]->filter, frame,
225                                      AV_BUFFERSRC_FLAG_KEEP_REF |
226                                      AV_BUFFERSRC_FLAG_PUSH);
227 }
228
229 static void sub2video_update(InputStream *ist, AVSubtitle *sub)
230 {
231     int w = ist->sub2video.w, h = ist->sub2video.h;
232     AVFrame *frame = ist->sub2video.frame;
233     int8_t *dst;
234     int     dst_linesize;
235     int num_rects, i;
236     int64_t pts, end_pts;
237
238     if (!frame)
239         return;
240     if (sub) {
241         pts       = av_rescale_q(sub->pts + sub->start_display_time * 1000,
242                                  AV_TIME_BASE_Q, ist->st->time_base);
243         end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000,
244                                  AV_TIME_BASE_Q, ist->st->time_base);
245         num_rects = sub->num_rects;
246     } else {
247         pts       = ist->sub2video.end_pts;
248         end_pts   = INT64_MAX;
249         num_rects = 0;
250     }
251     if (sub2video_get_blank_frame(ist) < 0) {
252         av_log(ist->st->codec, AV_LOG_ERROR,
253                "Impossible to get a blank canvas.\n");
254         return;
255     }
256     dst          = frame->data    [0];
257     dst_linesize = frame->linesize[0];
258     for (i = 0; i < num_rects; i++)
259         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
260     sub2video_push_ref(ist, pts);
261     ist->sub2video.end_pts = end_pts;
262 }
263
264 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
265 {
266     InputFile *infile = input_files[ist->file_index];
267     int i, j, nb_reqs;
268     int64_t pts2;
269
270     /* When a frame is read from a file, examine all sub2video streams in
271        the same file and send the sub2video frame again. Otherwise, decoded
272        video frames could be accumulating in the filter graph while a filter
273        (possibly overlay) is desperately waiting for a subtitle frame. */
274     for (i = 0; i < infile->nb_streams; i++) {
275         InputStream *ist2 = input_streams[infile->ist_index + i];
276         if (!ist2->sub2video.frame)
277             continue;
278         /* subtitles seem to be usually muxed ahead of other streams;
279            if not, substracting a larger time here is necessary */
280         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
281         /* do not send the heartbeat frame if the subtitle is already ahead */
282         if (pts2 <= ist2->sub2video.last_pts)
283             continue;
284         if (pts2 >= ist2->sub2video.end_pts || !ist2->sub2video.frame->data[0])
285             sub2video_update(ist2, NULL);
286         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
287             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
288         if (nb_reqs)
289             sub2video_push_ref(ist2, pts2);
290     }
291 }
292
293 static void sub2video_flush(InputStream *ist)
294 {
295     int i;
296
297     for (i = 0; i < ist->nb_filters; i++)
298         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
299 }
300
301 /* end of sub2video hack */
302
303 void term_exit(void)
304 {
305     av_log(NULL, AV_LOG_QUIET, "%s", "");
306 #if HAVE_TERMIOS_H
307     if(restore_tty)
308         tcsetattr (0, TCSANOW, &oldtty);
309 #endif
310 }
311
312 static volatile int received_sigterm = 0;
313 static volatile int received_nb_signals = 0;
314
315 static void
316 sigterm_handler(int sig)
317 {
318     received_sigterm = sig;
319     received_nb_signals++;
320     term_exit();
321     if(received_nb_signals > 3)
322         exit_program(123);
323 }
324
325 void term_init(void)
326 {
327 #if HAVE_TERMIOS_H
328     if(!run_as_daemon){
329         struct termios tty;
330         int istty = 1;
331 #if HAVE_ISATTY
332         istty = isatty(0) && isatty(2);
333 #endif
334         if (istty && tcgetattr (0, &tty) == 0) {
335             oldtty = tty;
336             restore_tty = 1;
337
338             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
339                              |INLCR|IGNCR|ICRNL|IXON);
340             tty.c_oflag |= OPOST;
341             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
342             tty.c_cflag &= ~(CSIZE|PARENB);
343             tty.c_cflag |= CS8;
344             tty.c_cc[VMIN] = 1;
345             tty.c_cc[VTIME] = 0;
346
347             tcsetattr (0, TCSANOW, &tty);
348         }
349         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
350     }
351 #endif
352     avformat_network_deinit();
353
354     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
355     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
356 #ifdef SIGXCPU
357     signal(SIGXCPU, sigterm_handler);
358 #endif
359 }
360
361 /* read a key without blocking */
362 static int read_key(void)
363 {
364     unsigned char ch;
365 #if HAVE_TERMIOS_H
366     int n = 1;
367     struct timeval tv;
368     fd_set rfds;
369
370     FD_ZERO(&rfds);
371     FD_SET(0, &rfds);
372     tv.tv_sec = 0;
373     tv.tv_usec = 0;
374     n = select(1, &rfds, NULL, NULL, &tv);
375     if (n > 0) {
376         n = read(0, &ch, 1);
377         if (n == 1)
378             return ch;
379
380         return n;
381     }
382 #elif HAVE_KBHIT
383 #    if HAVE_PEEKNAMEDPIPE
384     static int is_pipe;
385     static HANDLE input_handle;
386     DWORD dw, nchars;
387     if(!input_handle){
388         input_handle = GetStdHandle(STD_INPUT_HANDLE);
389         is_pipe = !GetConsoleMode(input_handle, &dw);
390     }
391
392     if (stdin->_cnt > 0) {
393         read(0, &ch, 1);
394         return ch;
395     }
396     if (is_pipe) {
397         /* When running under a GUI, you will end here. */
398         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
399             // input pipe may have been closed by the program that ran ffmpeg
400             return -1;
401         }
402         //Read it
403         if(nchars != 0) {
404             read(0, &ch, 1);
405             return ch;
406         }else{
407             return -1;
408         }
409     }
410 #    endif
411     if(kbhit())
412         return(getch());
413 #endif
414     return -1;
415 }
416
417 static int decode_interrupt_cb(void *ctx)
418 {
419     return received_nb_signals > 1;
420 }
421
422 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
423
424 static void ffmpeg_cleanup(int ret)
425 {
426     int i, j;
427
428     if (do_benchmark) {
429         int maxrss = getmaxrss() / 1024;
430         printf("bench: maxrss=%ikB\n", maxrss);
431     }
432
433     for (i = 0; i < nb_filtergraphs; i++) {
434         avfilter_graph_free(&filtergraphs[i]->graph);
435         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
436             av_freep(&filtergraphs[i]->inputs[j]->name);
437             av_freep(&filtergraphs[i]->inputs[j]);
438         }
439         av_freep(&filtergraphs[i]->inputs);
440         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
441             av_freep(&filtergraphs[i]->outputs[j]->name);
442             av_freep(&filtergraphs[i]->outputs[j]);
443         }
444         av_freep(&filtergraphs[i]->outputs);
445         av_freep(&filtergraphs[i]->graph_desc);
446         av_freep(&filtergraphs[i]);
447     }
448     av_freep(&filtergraphs);
449
450     av_freep(&subtitle_out);
451
452     /* close files */
453     for (i = 0; i < nb_output_files; i++) {
454         AVFormatContext *s = output_files[i]->ctx;
455         if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE) && s->pb)
456             avio_close(s->pb);
457         avformat_free_context(s);
458         av_dict_free(&output_files[i]->opts);
459         av_freep(&output_files[i]);
460     }
461     for (i = 0; i < nb_output_streams; i++) {
462         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
463         while (bsfc) {
464             AVBitStreamFilterContext *next = bsfc->next;
465             av_bitstream_filter_close(bsfc);
466             bsfc = next;
467         }
468         output_streams[i]->bitstream_filters = NULL;
469         avcodec_free_frame(&output_streams[i]->filtered_frame);
470
471         av_parser_close(output_streams[i]->parser);
472
473         av_freep(&output_streams[i]->forced_keyframes);
474         av_expr_free(output_streams[i]->forced_keyframes_pexpr);
475         av_freep(&output_streams[i]->avfilter);
476         av_freep(&output_streams[i]->logfile_prefix);
477         av_freep(&output_streams[i]);
478     }
479 #if HAVE_PTHREADS
480     free_input_threads();
481 #endif
482     for (i = 0; i < nb_input_files; i++) {
483         avformat_close_input(&input_files[i]->ctx);
484         av_freep(&input_files[i]);
485     }
486     for (i = 0; i < nb_input_streams; i++) {
487         av_frame_free(&input_streams[i]->decoded_frame);
488         av_frame_free(&input_streams[i]->filter_frame);
489         av_dict_free(&input_streams[i]->opts);
490         avsubtitle_free(&input_streams[i]->prev_sub.subtitle);
491         av_frame_free(&input_streams[i]->sub2video.frame);
492         av_freep(&input_streams[i]->filters);
493         av_freep(&input_streams[i]);
494     }
495
496     if (vstats_file)
497         fclose(vstats_file);
498     av_free(vstats_filename);
499
500     av_freep(&input_streams);
501     av_freep(&input_files);
502     av_freep(&output_streams);
503     av_freep(&output_files);
504
505     uninit_opts();
506
507     avformat_network_deinit();
508
509     if (received_sigterm) {
510         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
511                (int) received_sigterm);
512     }
513     term_exit();
514 }
515
516 void assert_avoptions(AVDictionary *m)
517 {
518     AVDictionaryEntry *t;
519     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
520         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
521         exit_program(1);
522     }
523 }
524
525 static void abort_codec_experimental(AVCodec *c, int encoder)
526 {
527     exit_program(1);
528 }
529
530 static void update_benchmark(const char *fmt, ...)
531 {
532     if (do_benchmark_all) {
533         int64_t t = getutime();
534         va_list va;
535         char buf[1024];
536
537         if (fmt) {
538             va_start(va, fmt);
539             vsnprintf(buf, sizeof(buf), fmt, va);
540             va_end(va);
541             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
542         }
543         current_time = t;
544     }
545 }
546
547 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
548 {
549     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
550     AVCodecContext          *avctx = ost->st->codec;
551     int ret;
552
553     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
554         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
555         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
556
557     /*
558      * Audio encoders may split the packets --  #frames in != #packets out.
559      * But there is no reordering, so we can limit the number of output packets
560      * by simply dropping them here.
561      * Counting encoded video frames needs to be done separately because of
562      * reordering, see do_video_out()
563      */
564     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
565         if (ost->frame_number >= ost->max_frames) {
566             av_free_packet(pkt);
567             return;
568         }
569         ost->frame_number++;
570     }
571
572     while (bsfc) {
573         AVPacket new_pkt = *pkt;
574         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
575                                            &new_pkt.data, &new_pkt.size,
576                                            pkt->data, pkt->size,
577                                            pkt->flags & AV_PKT_FLAG_KEY);
578         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
579             uint8_t *t = av_malloc(new_pkt.size + FF_INPUT_BUFFER_PADDING_SIZE); //the new should be a subset of the old so cannot overflow
580             if(t) {
581                 memcpy(t, new_pkt.data, new_pkt.size);
582                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
583                 new_pkt.data = t;
584                 new_pkt.buf = NULL;
585                 a = 1;
586             } else
587                 a = AVERROR(ENOMEM);
588         }
589         if (a > 0) {
590             av_free_packet(pkt);
591             new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
592                                            av_buffer_default_free, NULL, 0);
593             if (!new_pkt.buf)
594                 exit_program(1);
595         } else if (a < 0) {
596             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
597                    bsfc->filter->name, pkt->stream_index,
598                    avctx->codec ? avctx->codec->name : "copy");
599             print_error("", a);
600             if (exit_on_error)
601                 exit_program(1);
602         }
603         *pkt = new_pkt;
604
605         bsfc = bsfc->next;
606     }
607
608     if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS) &&
609         (avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) &&
610         pkt->dts != AV_NOPTS_VALUE &&
611         ost->last_mux_dts != AV_NOPTS_VALUE) {
612       int64_t max = ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
613       if (pkt->dts < max) {
614         int loglevel = max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG;
615         av_log(s, loglevel, "Non-monotonous DTS in output stream "
616                "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
617                ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
618         if (exit_on_error) {
619             av_log(NULL, AV_LOG_FATAL, "aborting.\n");
620             exit_program(1);
621         }
622         av_log(s, loglevel, "changing to %"PRId64". This may result "
623                "in incorrect timestamps in the output file.\n",
624                max);
625         if(pkt->pts >= pkt->dts)
626             pkt->pts = FFMAX(pkt->pts, max);
627         pkt->dts = max;
628       }
629     }
630     ost->last_mux_dts = pkt->dts;
631
632     pkt->stream_index = ost->index;
633
634     if (debug_ts) {
635         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
636                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
637                 av_get_media_type_string(ost->st->codec->codec_type),
638                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
639                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
640                 pkt->size
641               );
642     }
643
644     ret = av_interleaved_write_frame(s, pkt);
645     if (ret < 0) {
646         print_error("av_interleaved_write_frame()", ret);
647         exit_program(1);
648     }
649 }
650
651 static void close_output_stream(OutputStream *ost)
652 {
653     OutputFile *of = output_files[ost->file_index];
654
655     ost->finished = 1;
656     if (of->shortest) {
657         int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, AV_TIME_BASE_Q);
658         of->recording_time = FFMIN(of->recording_time, end);
659     }
660 }
661
662 static int check_recording_time(OutputStream *ost)
663 {
664     OutputFile *of = output_files[ost->file_index];
665
666     if (of->recording_time != INT64_MAX &&
667         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
668                       AV_TIME_BASE_Q) >= 0) {
669         close_output_stream(ost);
670         return 0;
671     }
672     return 1;
673 }
674
675 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
676                          AVFrame *frame)
677 {
678     AVCodecContext *enc = ost->st->codec;
679     AVPacket pkt;
680     int got_packet = 0;
681
682     av_init_packet(&pkt);
683     pkt.data = NULL;
684     pkt.size = 0;
685
686     if (!check_recording_time(ost))
687         return;
688
689     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
690         frame->pts = ost->sync_opts;
691     ost->sync_opts = frame->pts + frame->nb_samples;
692
693     av_assert0(pkt.size || !pkt.data);
694     update_benchmark(NULL);
695     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
696         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
697         exit_program(1);
698     }
699     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
700
701     if (got_packet) {
702         if (pkt.pts != AV_NOPTS_VALUE)
703             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
704         if (pkt.dts != AV_NOPTS_VALUE)
705             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
706         if (pkt.duration > 0)
707             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
708
709         if (debug_ts) {
710             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
711                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
712                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
713                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
714         }
715
716         audio_size += pkt.size;
717         write_frame(s, &pkt, ost);
718
719         av_free_packet(&pkt);
720     }
721 }
722
723 static void do_subtitle_out(AVFormatContext *s,
724                             OutputStream *ost,
725                             InputStream *ist,
726                             AVSubtitle *sub)
727 {
728     int subtitle_out_max_size = 1024 * 1024;
729     int subtitle_out_size, nb, i;
730     AVCodecContext *enc;
731     AVPacket pkt;
732     int64_t pts;
733
734     if (sub->pts == AV_NOPTS_VALUE) {
735         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
736         if (exit_on_error)
737             exit_program(1);
738         return;
739     }
740
741     enc = ost->st->codec;
742
743     if (!subtitle_out) {
744         subtitle_out = av_malloc(subtitle_out_max_size);
745     }
746
747     /* Note: DVB subtitle need one packet to draw them and one other
748        packet to clear them */
749     /* XXX: signal it in the codec context ? */
750     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
751         nb = 2;
752     else
753         nb = 1;
754
755     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
756     pts = sub->pts;
757     if (output_files[ost->file_index]->start_time != AV_NOPTS_VALUE)
758         pts -= output_files[ost->file_index]->start_time;
759     for (i = 0; i < nb; i++) {
760         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
761         if (!check_recording_time(ost))
762             return;
763
764         sub->pts = pts;
765         // start_display_time is required to be 0
766         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
767         sub->end_display_time  -= sub->start_display_time;
768         sub->start_display_time = 0;
769         if (i == 1)
770             sub->num_rects = 0;
771         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
772                                                     subtitle_out_max_size, sub);
773         if (subtitle_out_size < 0) {
774             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
775             exit_program(1);
776         }
777
778         av_init_packet(&pkt);
779         pkt.data = subtitle_out;
780         pkt.size = subtitle_out_size;
781         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
782         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
783         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
784             /* XXX: the pts correction is handled here. Maybe handling
785                it in the codec would be better */
786             if (i == 0)
787                 pkt.pts += 90 * sub->start_display_time;
788             else
789                 pkt.pts += 90 * sub->end_display_time;
790         }
791         subtitle_size += pkt.size;
792         write_frame(s, &pkt, ost);
793     }
794 }
795
796 static void do_video_out(AVFormatContext *s,
797                          OutputStream *ost,
798                          AVFrame *in_picture)
799 {
800     int ret, format_video_sync;
801     AVPacket pkt;
802     AVCodecContext *enc = ost->st->codec;
803     int nb_frames, i;
804     double sync_ipts, delta;
805     double duration = 0;
806     int frame_size = 0;
807     InputStream *ist = NULL;
808
809     if (ost->source_index >= 0)
810         ist = input_streams[ost->source_index];
811
812     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
813         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
814
815     sync_ipts = in_picture->pts;
816     delta = sync_ipts - ost->sync_opts + duration;
817
818     /* by default, we output a single frame */
819     nb_frames = 1;
820
821     format_video_sync = video_sync_method;
822     if (format_video_sync == VSYNC_AUTO) {
823         if(!strcmp(s->oformat->name, "avi")) {
824             format_video_sync = VSYNC_VFR;
825         } else
826             format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
827     }
828
829     switch (format_video_sync) {
830     case VSYNC_CFR:
831         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
832         if (delta < -1.1)
833             nb_frames = 0;
834         else if (delta > 1.1)
835             nb_frames = lrintf(delta);
836         break;
837     case VSYNC_VFR:
838         if (delta <= -0.6)
839             nb_frames = 0;
840         else if (delta > 0.6)
841             ost->sync_opts = lrint(sync_ipts);
842         break;
843     case VSYNC_DROP:
844     case VSYNC_PASSTHROUGH:
845         ost->sync_opts = lrint(sync_ipts);
846         break;
847     default:
848         av_assert0(0);
849     }
850
851     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
852     if (nb_frames == 0) {
853         nb_frames_drop++;
854         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
855         return;
856     } else if (nb_frames > 1) {
857         if (nb_frames > dts_error_threshold * 30) {
858             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
859             nb_frames_drop++;
860             return;
861         }
862         nb_frames_dup += nb_frames - 1;
863         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
864     }
865
866   /* duplicates frame if needed */
867   for (i = 0; i < nb_frames; i++) {
868     av_init_packet(&pkt);
869     pkt.data = NULL;
870     pkt.size = 0;
871
872     in_picture->pts = ost->sync_opts;
873
874 #if 1
875     if (!check_recording_time(ost))
876 #else
877     if (ost->frame_number >= ost->max_frames)
878 #endif
879         return;
880
881     if (s->oformat->flags & AVFMT_RAWPICTURE &&
882         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
883         /* raw pictures are written as AVPicture structure to
884            avoid any copies. We support temporarily the older
885            method. */
886         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
887         enc->coded_frame->top_field_first  = in_picture->top_field_first;
888         if (enc->coded_frame->interlaced_frame)
889             enc->field_order = enc->coded_frame->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
890         else
891             enc->field_order = AV_FIELD_PROGRESSIVE;
892         pkt.data   = (uint8_t *)in_picture;
893         pkt.size   =  sizeof(AVPicture);
894         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
895         pkt.flags |= AV_PKT_FLAG_KEY;
896
897         video_size += pkt.size;
898         write_frame(s, &pkt, ost);
899     } else {
900         int got_packet, forced_keyframe = 0;
901         double pts_time;
902
903         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME) &&
904             ost->top_field_first >= 0)
905             in_picture->top_field_first = !!ost->top_field_first;
906
907         if (in_picture->interlaced_frame) {
908             if (enc->codec->id == AV_CODEC_ID_MJPEG)
909                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
910             else
911                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
912         } else
913             enc->field_order = AV_FIELD_PROGRESSIVE;
914
915         in_picture->quality = ost->st->codec->global_quality;
916         if (!enc->me_threshold)
917             in_picture->pict_type = 0;
918
919         pts_time = in_picture->pts != AV_NOPTS_VALUE ?
920             in_picture->pts * av_q2d(enc->time_base) : NAN;
921         if (ost->forced_kf_index < ost->forced_kf_count &&
922             in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
923             ost->forced_kf_index++;
924             forced_keyframe = 1;
925         } else if (ost->forced_keyframes_pexpr) {
926             double res;
927             ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
928             res = av_expr_eval(ost->forced_keyframes_pexpr,
929                                ost->forced_keyframes_expr_const_values, NULL);
930             av_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
931                     ost->forced_keyframes_expr_const_values[FKF_N],
932                     ost->forced_keyframes_expr_const_values[FKF_N_FORCED],
933                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N],
934                     ost->forced_keyframes_expr_const_values[FKF_T],
935                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T],
936                     res);
937             if (res) {
938                 forced_keyframe = 1;
939                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] =
940                     ost->forced_keyframes_expr_const_values[FKF_N];
941                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] =
942                     ost->forced_keyframes_expr_const_values[FKF_T];
943                 ost->forced_keyframes_expr_const_values[FKF_N_FORCED] += 1;
944             }
945
946             ost->forced_keyframes_expr_const_values[FKF_N] += 1;
947         }
948         if (forced_keyframe) {
949             in_picture->pict_type = AV_PICTURE_TYPE_I;
950             av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
951         }
952
953         update_benchmark(NULL);
954         ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
955         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
956         if (ret < 0) {
957             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
958             exit_program(1);
959         }
960
961         if (got_packet) {
962             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
963                 pkt.pts = ost->sync_opts;
964
965             if (pkt.pts != AV_NOPTS_VALUE)
966                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
967             if (pkt.dts != AV_NOPTS_VALUE)
968                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
969
970             if (debug_ts) {
971                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
972                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
973                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
974                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
975             }
976
977             frame_size = pkt.size;
978             video_size += pkt.size;
979             write_frame(s, &pkt, ost);
980             av_free_packet(&pkt);
981
982             /* if two pass, output log */
983             if (ost->logfile && enc->stats_out) {
984                 fprintf(ost->logfile, "%s", enc->stats_out);
985             }
986         }
987     }
988     ost->sync_opts++;
989     /*
990      * For video, number of frames in == number of packets out.
991      * But there may be reordering, so we can't throw away frames on encoder
992      * flush, we need to limit them here, before they go into encoder.
993      */
994     ost->frame_number++;
995
996     if (vstats_filename && frame_size)
997         do_video_stats(ost, frame_size);
998   }
999 }
1000
1001 static double psnr(double d)
1002 {
1003     return -10.0 * log(d) / log(10.0);
1004 }
1005
1006 static void do_video_stats(OutputStream *ost, int frame_size)
1007 {
1008     AVCodecContext *enc;
1009     int frame_number;
1010     double ti1, bitrate, avg_bitrate;
1011
1012     /* this is executed just the first time do_video_stats is called */
1013     if (!vstats_file) {
1014         vstats_file = fopen(vstats_filename, "w");
1015         if (!vstats_file) {
1016             perror("fopen");
1017             exit_program(1);
1018         }
1019     }
1020
1021     enc = ost->st->codec;
1022     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1023         frame_number = ost->st->nb_frames;
1024         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1025         if (enc->flags&CODEC_FLAG_PSNR)
1026             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1027
1028         fprintf(vstats_file,"f_size= %6d ", frame_size);
1029         /* compute pts value */
1030         ti1 = ost->st->pts.val * av_q2d(enc->time_base);
1031         if (ti1 < 0.01)
1032             ti1 = 0.01;
1033
1034         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1035         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1036         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1037                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1038         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1039     }
1040 }
1041
1042 /**
1043  * Get and encode new output from any of the filtergraphs, without causing
1044  * activity.
1045  *
1046  * @return  0 for success, <0 for severe errors
1047  */
1048 static int reap_filters(void)
1049 {
1050     AVFrame *filtered_frame = NULL;
1051     int i;
1052     int64_t frame_pts;
1053
1054     /* Reap all buffers present in the buffer sinks */
1055     for (i = 0; i < nb_output_streams; i++) {
1056         OutputStream *ost = output_streams[i];
1057         OutputFile    *of = output_files[ost->file_index];
1058         int ret = 0;
1059
1060         if (!ost->filter)
1061             continue;
1062
1063         if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1064             return AVERROR(ENOMEM);
1065         } else
1066             avcodec_get_frame_defaults(ost->filtered_frame);
1067         filtered_frame = ost->filtered_frame;
1068
1069         while (1) {
1070             ret = av_buffersink_get_frame_flags(ost->filter->filter, filtered_frame,
1071                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1072             if (ret < 0) {
1073                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1074                     av_log(NULL, AV_LOG_WARNING,
1075                            "Error in av_buffersink_get_frame_flags(): %s\n", av_err2str(ret));
1076                 }
1077                 break;
1078             }
1079             frame_pts = AV_NOPTS_VALUE;
1080             if (filtered_frame->pts != AV_NOPTS_VALUE) {
1081                 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1082                 filtered_frame->pts = frame_pts = av_rescale_q(filtered_frame->pts,
1083                                                 ost->filter->filter->inputs[0]->time_base,
1084                                                 ost->st->codec->time_base) -
1085                                     av_rescale_q(start_time,
1086                                                 AV_TIME_BASE_Q,
1087                                                 ost->st->codec->time_base);
1088             }
1089             //if (ost->source_index >= 0)
1090             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1091
1092
1093             switch (ost->filter->filter->inputs[0]->type) {
1094             case AVMEDIA_TYPE_VIDEO:
1095                 filtered_frame->pts = frame_pts;
1096                 if (!ost->frame_aspect_ratio.num)
1097                     ost->st->codec->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
1098
1099                 do_video_out(of->ctx, ost, filtered_frame);
1100                 break;
1101             case AVMEDIA_TYPE_AUDIO:
1102                 filtered_frame->pts = frame_pts;
1103                 if (!(ost->st->codec->codec->capabilities & CODEC_CAP_PARAM_CHANGE) &&
1104                     ost->st->codec->channels != av_frame_get_channels(filtered_frame)) {
1105                     av_log(NULL, AV_LOG_ERROR,
1106                            "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
1107                     break;
1108                 }
1109                 do_audio_out(of->ctx, ost, filtered_frame);
1110                 break;
1111             default:
1112                 // TODO support subtitle filters
1113                 av_assert0(0);
1114             }
1115
1116             av_frame_unref(filtered_frame);
1117         }
1118     }
1119
1120     return 0;
1121 }
1122
1123 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1124 {
1125     char buf[1024];
1126     AVBPrint buf_script;
1127     OutputStream *ost;
1128     AVFormatContext *oc;
1129     int64_t total_size;
1130     AVCodecContext *enc;
1131     int frame_number, vid, i;
1132     double bitrate;
1133     int64_t pts = INT64_MIN;
1134     static int64_t last_time = -1;
1135     static int qp_histogram[52];
1136     int hours, mins, secs, us;
1137
1138     if (!print_stats && !is_last_report && !progress_avio)
1139         return;
1140
1141     if (!is_last_report) {
1142         if (last_time == -1) {
1143             last_time = cur_time;
1144             return;
1145         }
1146         if ((cur_time - last_time) < 500000)
1147             return;
1148         last_time = cur_time;
1149     }
1150
1151
1152     oc = output_files[0]->ctx;
1153
1154     total_size = avio_size(oc->pb);
1155     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1156         total_size = avio_tell(oc->pb);
1157
1158     buf[0] = '\0';
1159     vid = 0;
1160     av_bprint_init(&buf_script, 0, 1);
1161     for (i = 0; i < nb_output_streams; i++) {
1162         float q = -1;
1163         ost = output_streams[i];
1164         enc = ost->st->codec;
1165         if (!ost->stream_copy && enc->coded_frame)
1166             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1167         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1168             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1169             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1170                        ost->file_index, ost->index, q);
1171         }
1172         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1173             float fps, t = (cur_time-timer_start) / 1000000.0;
1174
1175             frame_number = ost->frame_number;
1176             fps = t > 1 ? frame_number / t : 0;
1177             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1178                      frame_number, fps < 9.95, fps, q);
1179             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1180             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1181             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1182                        ost->file_index, ost->index, q);
1183             if (is_last_report)
1184                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1185             if (qp_hist) {
1186                 int j;
1187                 int qp = lrintf(q);
1188                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1189                     qp_histogram[qp]++;
1190                 for (j = 0; j < 32; j++)
1191                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1192             }
1193             if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1194                 int j;
1195                 double error, error_sum = 0;
1196                 double scale, scale_sum = 0;
1197                 double p;
1198                 char type[3] = { 'Y','U','V' };
1199                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1200                 for (j = 0; j < 3; j++) {
1201                     if (is_last_report) {
1202                         error = enc->error[j];
1203                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1204                     } else {
1205                         error = enc->coded_frame->error[j];
1206                         scale = enc->width * enc->height * 255.0 * 255.0;
1207                     }
1208                     if (j)
1209                         scale /= 4;
1210                     error_sum += error;
1211                     scale_sum += scale;
1212                     p = psnr(error / scale);
1213                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1214                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1215                                ost->file_index, ost->index, type[j] | 32, p);
1216                 }
1217                 p = psnr(error_sum / scale_sum);
1218                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1219                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1220                            ost->file_index, ost->index, p);
1221             }
1222             vid = 1;
1223         }
1224         /* compute min output value */
1225         if ((is_last_report || !ost->finished) && ost->st->pts.val != AV_NOPTS_VALUE)
1226             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1227                                           ost->st->time_base, AV_TIME_BASE_Q));
1228     }
1229
1230     secs = pts / AV_TIME_BASE;
1231     us = pts % AV_TIME_BASE;
1232     mins = secs / 60;
1233     secs %= 60;
1234     hours = mins / 60;
1235     mins %= 60;
1236
1237     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1238
1239     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1240                                  "size=N/A time=");
1241     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1242                                  "size=%8.0fkB time=", total_size / 1024.0);
1243     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1244              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1245              (100 * us) / AV_TIME_BASE);
1246     if (bitrate < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1247                               "bitrate=N/A");
1248     else             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1249                               "bitrate=%6.1fkbits/s", bitrate);
1250     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
1251     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1252     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1253     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1254                hours, mins, secs, us);
1255
1256     if (nb_frames_dup || nb_frames_drop)
1257         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1258                 nb_frames_dup, nb_frames_drop);
1259     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1260     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1261
1262     if (print_stats || is_last_report) {
1263         if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
1264             fprintf(stderr, "%s    \r", buf);
1265         } else
1266             av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1267
1268     fflush(stderr);
1269     }
1270
1271     if (progress_avio) {
1272         av_bprintf(&buf_script, "progress=%s\n",
1273                    is_last_report ? "end" : "continue");
1274         avio_write(progress_avio, buf_script.str,
1275                    FFMIN(buf_script.len, buf_script.size - 1));
1276         avio_flush(progress_avio);
1277         av_bprint_finalize(&buf_script, NULL);
1278         if (is_last_report) {
1279             avio_close(progress_avio);
1280             progress_avio = NULL;
1281         }
1282     }
1283
1284     if (is_last_report) {
1285         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1286         av_log(NULL, AV_LOG_INFO, "\n");
1287         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1288                video_size / 1024.0,
1289                audio_size / 1024.0,
1290                subtitle_size / 1024.0,
1291                extra_size / 1024.0,
1292                100.0 * (total_size - raw) / raw
1293         );
1294         if(video_size + audio_size + subtitle_size + extra_size == 0){
1295             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1296         }
1297     }
1298 }
1299
1300 static void flush_encoders(void)
1301 {
1302     int i, ret;
1303
1304     for (i = 0; i < nb_output_streams; i++) {
1305         OutputStream   *ost = output_streams[i];
1306         AVCodecContext *enc = ost->st->codec;
1307         AVFormatContext *os = output_files[ost->file_index]->ctx;
1308         int stop_encoding = 0;
1309
1310         if (!ost->encoding_needed)
1311             continue;
1312
1313         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1314             continue;
1315         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1316             continue;
1317
1318         for (;;) {
1319             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1320             const char *desc;
1321             int64_t *size;
1322
1323             switch (ost->st->codec->codec_type) {
1324             case AVMEDIA_TYPE_AUDIO:
1325                 encode = avcodec_encode_audio2;
1326                 desc   = "Audio";
1327                 size   = &audio_size;
1328                 break;
1329             case AVMEDIA_TYPE_VIDEO:
1330                 encode = avcodec_encode_video2;
1331                 desc   = "Video";
1332                 size   = &video_size;
1333                 break;
1334             default:
1335                 stop_encoding = 1;
1336             }
1337
1338             if (encode) {
1339                 AVPacket pkt;
1340                 int got_packet;
1341                 av_init_packet(&pkt);
1342                 pkt.data = NULL;
1343                 pkt.size = 0;
1344
1345                 update_benchmark(NULL);
1346                 ret = encode(enc, &pkt, NULL, &got_packet);
1347                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1348                 if (ret < 0) {
1349                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1350                     exit_program(1);
1351                 }
1352                 *size += pkt.size;
1353                 if (ost->logfile && enc->stats_out) {
1354                     fprintf(ost->logfile, "%s", enc->stats_out);
1355                 }
1356                 if (!got_packet) {
1357                     stop_encoding = 1;
1358                     break;
1359                 }
1360                 if (pkt.pts != AV_NOPTS_VALUE)
1361                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1362                 if (pkt.dts != AV_NOPTS_VALUE)
1363                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1364                 if (pkt.duration > 0)
1365                     pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1366                 write_frame(os, &pkt, ost);
1367                 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
1368                     do_video_stats(ost, pkt.size);
1369                 }
1370             }
1371
1372             if (stop_encoding)
1373                 break;
1374         }
1375     }
1376 }
1377
1378 /*
1379  * Check whether a packet from ist should be written into ost at this time
1380  */
1381 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1382 {
1383     OutputFile *of = output_files[ost->file_index];
1384     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1385
1386     if (ost->source_index != ist_index)
1387         return 0;
1388
1389     if (of->start_time != AV_NOPTS_VALUE && ist->pts < of->start_time)
1390         return 0;
1391
1392     return 1;
1393 }
1394
1395 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1396 {
1397     OutputFile *of = output_files[ost->file_index];
1398     InputFile   *f = input_files [ist->file_index];
1399     int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1400     int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1401     int64_t ist_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ist->st->time_base);
1402     AVPicture pict;
1403     AVPacket opkt;
1404
1405     av_init_packet(&opkt);
1406
1407     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1408         !ost->copy_initial_nonkeyframes)
1409         return;
1410
1411     if (pkt->pts == AV_NOPTS_VALUE) {
1412         if (!ost->frame_number && ist->pts < start_time &&
1413             !ost->copy_prior_start)
1414             return;
1415     } else {
1416         if (!ost->frame_number && pkt->pts < ist_tb_start_time &&
1417             !ost->copy_prior_start)
1418             return;
1419     }
1420
1421     if (of->recording_time != INT64_MAX &&
1422         ist->pts >= of->recording_time + start_time) {
1423         close_output_stream(ost);
1424         return;
1425     }
1426
1427     if (f->recording_time != INT64_MAX) {
1428         start_time = f->ctx->start_time;
1429         if (f->start_time != AV_NOPTS_VALUE)
1430             start_time += f->start_time;
1431         if (ist->pts >= f->recording_time + start_time) {
1432             close_output_stream(ost);
1433             return;
1434         }
1435     }
1436
1437     /* force the input stream PTS */
1438     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1439         audio_size += pkt->size;
1440     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1441         video_size += pkt->size;
1442         ost->sync_opts++;
1443     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1444         subtitle_size += pkt->size;
1445     }
1446
1447     if (pkt->pts != AV_NOPTS_VALUE)
1448         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1449     else
1450         opkt.pts = AV_NOPTS_VALUE;
1451
1452     if (pkt->dts == AV_NOPTS_VALUE)
1453         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1454     else
1455         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1456     opkt.dts -= ost_tb_start_time;
1457
1458     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1459         int duration = av_get_audio_frame_duration(ist->st->codec, pkt->size);
1460         if(!duration)
1461             duration = ist->st->codec->frame_size;
1462         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1463                                                (AVRational){1, ist->st->codec->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
1464                                                ost->st->time_base) - ost_tb_start_time;
1465     }
1466
1467     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1468     opkt.flags    = pkt->flags;
1469
1470     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1471     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1472        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1473        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1474        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1475        ) {
1476         if (av_parser_change(ost->parser, ost->st->codec,
1477                              &opkt.data, &opkt.size,
1478                              pkt->data, pkt->size,
1479                              pkt->flags & AV_PKT_FLAG_KEY)) {
1480             opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1481             if (!opkt.buf)
1482                 exit_program(1);
1483         }
1484     } else {
1485         opkt.data = pkt->data;
1486         opkt.size = pkt->size;
1487     }
1488
1489     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1490         /* store AVPicture in AVPacket, as expected by the output format */
1491         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1492         opkt.data = (uint8_t *)&pict;
1493         opkt.size = sizeof(AVPicture);
1494         opkt.flags |= AV_PKT_FLAG_KEY;
1495     }
1496
1497     write_frame(of->ctx, &opkt, ost);
1498     ost->st->codec->frame_number++;
1499 }
1500
1501 int guess_input_channel_layout(InputStream *ist)
1502 {
1503     AVCodecContext *dec = ist->st->codec;
1504
1505     if (!dec->channel_layout) {
1506         char layout_name[256];
1507
1508         if (dec->channels > ist->guess_layout_max)
1509             return 0;
1510         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1511         if (!dec->channel_layout)
1512             return 0;
1513         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1514                                      dec->channels, dec->channel_layout);
1515         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1516                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1517     }
1518     return 1;
1519 }
1520
1521 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1522 {
1523     AVFrame *decoded_frame, *f;
1524     AVCodecContext *avctx = ist->st->codec;
1525     int i, ret, err = 0, resample_changed;
1526     AVRational decoded_frame_tb;
1527
1528     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1529         return AVERROR(ENOMEM);
1530     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1531         return AVERROR(ENOMEM);
1532     decoded_frame = ist->decoded_frame;
1533
1534     update_benchmark(NULL);
1535     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1536     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1537
1538     if (ret >= 0 && avctx->sample_rate <= 0) {
1539         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1540         ret = AVERROR_INVALIDDATA;
1541     }
1542
1543     if (*got_output || ret<0 || pkt->size)
1544         decode_error_stat[ret<0] ++;
1545
1546     if (!*got_output || ret < 0) {
1547         if (!pkt->size) {
1548             for (i = 0; i < ist->nb_filters; i++)
1549 #if 1
1550                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1551 #else
1552                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1553 #endif
1554         }
1555         return ret;
1556     }
1557
1558 #if 1
1559     /* increment next_dts to use for the case where the input stream does not
1560        have timestamps or there are multiple frames in the packet */
1561     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1562                      avctx->sample_rate;
1563     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1564                      avctx->sample_rate;
1565 #endif
1566
1567     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1568                        ist->resample_channels       != avctx->channels               ||
1569                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1570                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1571     if (resample_changed) {
1572         char layout1[64], layout2[64];
1573
1574         if (!guess_input_channel_layout(ist)) {
1575             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1576                    "layout for Input Stream #%d.%d\n", ist->file_index,
1577                    ist->st->index);
1578             exit_program(1);
1579         }
1580         decoded_frame->channel_layout = avctx->channel_layout;
1581
1582         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1583                                      ist->resample_channel_layout);
1584         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1585                                      decoded_frame->channel_layout);
1586
1587         av_log(NULL, AV_LOG_INFO,
1588                "Input stream #%d:%d frame changed from rate:%d fmt:%s ch:%d chl:%s to rate:%d fmt:%s ch:%d chl:%s\n",
1589                ist->file_index, ist->st->index,
1590                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1591                ist->resample_channels, layout1,
1592                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1593                avctx->channels, layout2);
1594
1595         ist->resample_sample_fmt     = decoded_frame->format;
1596         ist->resample_sample_rate    = decoded_frame->sample_rate;
1597         ist->resample_channel_layout = decoded_frame->channel_layout;
1598         ist->resample_channels       = avctx->channels;
1599
1600         for (i = 0; i < nb_filtergraphs; i++)
1601             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1602                 FilterGraph *fg = filtergraphs[i];
1603                 int j;
1604                 if (configure_filtergraph(fg) < 0) {
1605                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1606                     exit_program(1);
1607                 }
1608                 for (j = 0; j < fg->nb_outputs; j++) {
1609                     OutputStream *ost = fg->outputs[j]->ost;
1610                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1611                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1612                         av_buffersink_set_frame_size(ost->filter->filter,
1613                                                      ost->st->codec->frame_size);
1614                 }
1615             }
1616     }
1617
1618     /* if the decoder provides a pts, use it instead of the last packet pts.
1619        the decoder could be delaying output by a packet or more. */
1620     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1621         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1622         decoded_frame_tb   = avctx->time_base;
1623     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1624         decoded_frame->pts = decoded_frame->pkt_pts;
1625         pkt->pts           = AV_NOPTS_VALUE;
1626         decoded_frame_tb   = ist->st->time_base;
1627     } else if (pkt->pts != AV_NOPTS_VALUE) {
1628         decoded_frame->pts = pkt->pts;
1629         pkt->pts           = AV_NOPTS_VALUE;
1630         decoded_frame_tb   = ist->st->time_base;
1631     }else {
1632         decoded_frame->pts = ist->dts;
1633         decoded_frame_tb   = AV_TIME_BASE_Q;
1634     }
1635     if (decoded_frame->pts != AV_NOPTS_VALUE)
1636         decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
1637                                               (AVRational){1, ist->st->codec->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
1638                                               (AVRational){1, ist->st->codec->sample_rate});
1639     for (i = 0; i < ist->nb_filters; i++) {
1640         if (i < ist->nb_filters - 1) {
1641             f = ist->filter_frame;
1642             err = av_frame_ref(f, decoded_frame);
1643             if (err < 0)
1644                 break;
1645         } else
1646             f = decoded_frame;
1647         err = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f,
1648                                      AV_BUFFERSRC_FLAG_PUSH);
1649         if (err == AVERROR_EOF)
1650             err = 0; /* ignore */
1651         if (err < 0)
1652             break;
1653     }
1654     decoded_frame->pts = AV_NOPTS_VALUE;
1655
1656     av_frame_unref(ist->filter_frame);
1657     av_frame_unref(decoded_frame);
1658     return err < 0 ? err : ret;
1659 }
1660
1661 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1662 {
1663     AVFrame *decoded_frame, *f;
1664     int i, ret = 0, err = 0, resample_changed;
1665     int64_t best_effort_timestamp;
1666     AVRational *frame_sample_aspect;
1667
1668     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1669         return AVERROR(ENOMEM);
1670     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1671         return AVERROR(ENOMEM);
1672     decoded_frame = ist->decoded_frame;
1673     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1674
1675     update_benchmark(NULL);
1676     ret = avcodec_decode_video2(ist->st->codec,
1677                                 decoded_frame, got_output, pkt);
1678     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1679
1680     if (*got_output || ret<0 || pkt->size)
1681         decode_error_stat[ret<0] ++;
1682
1683     if (!*got_output || ret < 0) {
1684         if (!pkt->size) {
1685             for (i = 0; i < ist->nb_filters; i++)
1686 #if 1
1687                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1688 #else
1689                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1690 #endif
1691         }
1692         return ret;
1693     }
1694
1695     if(ist->top_field_first>=0)
1696         decoded_frame->top_field_first = ist->top_field_first;
1697
1698     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1699     if(best_effort_timestamp != AV_NOPTS_VALUE)
1700         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1701
1702     if (debug_ts) {
1703         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1704                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1705                 ist->st->index, av_ts2str(decoded_frame->pts),
1706                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1707                 best_effort_timestamp,
1708                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1709                 decoded_frame->key_frame, decoded_frame->pict_type);
1710     }
1711
1712     pkt->size = 0;
1713
1714     if (ist->st->sample_aspect_ratio.num)
1715         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1716
1717     resample_changed = ist->resample_width   != decoded_frame->width  ||
1718                        ist->resample_height  != decoded_frame->height ||
1719                        ist->resample_pix_fmt != decoded_frame->format;
1720     if (resample_changed) {
1721         av_log(NULL, AV_LOG_INFO,
1722                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1723                ist->file_index, ist->st->index,
1724                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1725                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1726
1727         ist->resample_width   = decoded_frame->width;
1728         ist->resample_height  = decoded_frame->height;
1729         ist->resample_pix_fmt = decoded_frame->format;
1730
1731         for (i = 0; i < nb_filtergraphs; i++) {
1732             if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
1733                 configure_filtergraph(filtergraphs[i]) < 0) {
1734                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1735                 exit_program(1);
1736             }
1737         }
1738     }
1739
1740     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1741     for (i = 0; i < ist->nb_filters; i++) {
1742         if (!frame_sample_aspect->num)
1743             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1744
1745         if (i < ist->nb_filters - 1) {
1746             f = ist->filter_frame;
1747             err = av_frame_ref(f, decoded_frame);
1748             if (err < 0)
1749                 break;
1750         } else
1751             f = decoded_frame;
1752         ret = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f, AV_BUFFERSRC_FLAG_PUSH);
1753         if (ret == AVERROR_EOF) {
1754             ret = 0; /* ignore */
1755         } else if (ret < 0) {
1756             av_log(NULL, AV_LOG_FATAL,
1757                    "Failed to inject frame into filter network: %s\n", av_err2str(ret));
1758             exit_program(1);
1759         }
1760     }
1761
1762     av_frame_unref(ist->filter_frame);
1763     av_frame_unref(decoded_frame);
1764     return err < 0 ? err : ret;
1765 }
1766
1767 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1768 {
1769     AVSubtitle subtitle;
1770     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1771                                           &subtitle, got_output, pkt);
1772
1773     if (*got_output || ret<0 || pkt->size)
1774         decode_error_stat[ret<0] ++;
1775
1776     if (ret < 0 || !*got_output) {
1777         if (!pkt->size)
1778             sub2video_flush(ist);
1779         return ret;
1780     }
1781
1782     if (ist->fix_sub_duration) {
1783         if (ist->prev_sub.got_output) {
1784             int end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1785                                  1000, AV_TIME_BASE);
1786             if (end < ist->prev_sub.subtitle.end_display_time) {
1787                 av_log(ist->st->codec, AV_LOG_DEBUG,
1788                        "Subtitle duration reduced from %d to %d\n",
1789                        ist->prev_sub.subtitle.end_display_time, end);
1790                 ist->prev_sub.subtitle.end_display_time = end;
1791             }
1792         }
1793         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1794         FFSWAP(int,        ret,         ist->prev_sub.ret);
1795         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1796     }
1797
1798     sub2video_update(ist, &subtitle);
1799
1800     if (!*got_output || !subtitle.num_rects)
1801         return ret;
1802
1803     for (i = 0; i < nb_output_streams; i++) {
1804         OutputStream *ost = output_streams[i];
1805
1806         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1807             continue;
1808
1809         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
1810     }
1811
1812     avsubtitle_free(&subtitle);
1813     return ret;
1814 }
1815
1816 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1817 static int output_packet(InputStream *ist, const AVPacket *pkt)
1818 {
1819     int ret = 0, i;
1820     int got_output = 0;
1821
1822     AVPacket avpkt;
1823     if (!ist->saw_first_ts) {
1824         ist->dts = ist->st->avg_frame_rate.num ? - ist->st->codec->has_b_frames * AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
1825         ist->pts = 0;
1826         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1827             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1828             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1829         }
1830         ist->saw_first_ts = 1;
1831     }
1832
1833     if (ist->next_dts == AV_NOPTS_VALUE)
1834         ist->next_dts = ist->dts;
1835     if (ist->next_pts == AV_NOPTS_VALUE)
1836         ist->next_pts = ist->pts;
1837
1838     if (pkt == NULL) {
1839         /* EOF handling */
1840         av_init_packet(&avpkt);
1841         avpkt.data = NULL;
1842         avpkt.size = 0;
1843         goto handle_eof;
1844     } else {
1845         avpkt = *pkt;
1846     }
1847
1848     if (pkt->dts != AV_NOPTS_VALUE) {
1849         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1850         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1851             ist->next_pts = ist->pts = ist->dts;
1852     }
1853
1854     // while we have more to decode or while the decoder did output something on EOF
1855     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1856         int duration;
1857     handle_eof:
1858
1859         ist->pts = ist->next_pts;
1860         ist->dts = ist->next_dts;
1861
1862         if (avpkt.size && avpkt.size != pkt->size) {
1863             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1864                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1865             ist->showed_multi_packet_warning = 1;
1866         }
1867
1868         switch (ist->st->codec->codec_type) {
1869         case AVMEDIA_TYPE_AUDIO:
1870             ret = decode_audio    (ist, &avpkt, &got_output);
1871             break;
1872         case AVMEDIA_TYPE_VIDEO:
1873             ret = decode_video    (ist, &avpkt, &got_output);
1874             if (avpkt.duration) {
1875                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1876             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1877                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1878                 duration = ((int64_t)AV_TIME_BASE *
1879                                 ist->st->codec->time_base.num * ticks) /
1880                                 ist->st->codec->time_base.den;
1881             } else
1882                 duration = 0;
1883
1884             if(ist->dts != AV_NOPTS_VALUE && duration) {
1885                 ist->next_dts += duration;
1886             }else
1887                 ist->next_dts = AV_NOPTS_VALUE;
1888
1889             if (got_output)
1890                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1891             break;
1892         case AVMEDIA_TYPE_SUBTITLE:
1893             ret = transcode_subtitles(ist, &avpkt, &got_output);
1894             break;
1895         default:
1896             return -1;
1897         }
1898
1899         if (ret < 0)
1900             return ret;
1901
1902         avpkt.dts=
1903         avpkt.pts= AV_NOPTS_VALUE;
1904
1905         // touch data and size only if not EOF
1906         if (pkt) {
1907             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1908                 ret = avpkt.size;
1909             avpkt.data += ret;
1910             avpkt.size -= ret;
1911         }
1912         if (!got_output) {
1913             continue;
1914         }
1915     }
1916
1917     /* handle stream copy */
1918     if (!ist->decoding_needed) {
1919         ist->dts = ist->next_dts;
1920         switch (ist->st->codec->codec_type) {
1921         case AVMEDIA_TYPE_AUDIO:
1922             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1923                              ist->st->codec->sample_rate;
1924             break;
1925         case AVMEDIA_TYPE_VIDEO:
1926             if (ist->framerate.num) {
1927                 // TODO: Remove work-around for c99-to-c89 issue 7
1928                 AVRational time_base_q = AV_TIME_BASE_Q;
1929                 int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate));
1930                 ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q);
1931             } else if (pkt->duration) {
1932                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1933             } else if(ist->st->codec->time_base.num != 0) {
1934                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1935                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1936                                   ist->st->codec->time_base.num * ticks) /
1937                                   ist->st->codec->time_base.den;
1938             }
1939             break;
1940         }
1941         ist->pts = ist->dts;
1942         ist->next_pts = ist->next_dts;
1943     }
1944     for (i = 0; pkt && i < nb_output_streams; i++) {
1945         OutputStream *ost = output_streams[i];
1946
1947         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1948             continue;
1949
1950         do_streamcopy(ist, ost, pkt);
1951     }
1952
1953     return 0;
1954 }
1955
1956 static void print_sdp(void)
1957 {
1958     char sdp[16384];
1959     int i;
1960     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1961
1962     if (!avc)
1963         exit_program(1);
1964     for (i = 0; i < nb_output_files; i++)
1965         avc[i] = output_files[i]->ctx;
1966
1967     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1968     printf("SDP:\n%s\n", sdp);
1969     fflush(stdout);
1970     av_freep(&avc);
1971 }
1972
1973 static int init_input_stream(int ist_index, char *error, int error_len)
1974 {
1975     int ret;
1976     InputStream *ist = input_streams[ist_index];
1977
1978     if (ist->decoding_needed) {
1979         AVCodec *codec = ist->dec;
1980         if (!codec) {
1981             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1982                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1983             return AVERROR(EINVAL);
1984         }
1985
1986         av_opt_set_int(ist->st->codec, "refcounted_frames", 1, 0);
1987
1988         if (!av_dict_get(ist->opts, "threads", NULL, 0))
1989             av_dict_set(&ist->opts, "threads", "auto", 0);
1990         if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
1991             char errbuf[128];
1992             if (ret == AVERROR_EXPERIMENTAL)
1993                 abort_codec_experimental(codec, 0);
1994
1995             av_strerror(ret, errbuf, sizeof(errbuf));
1996
1997             snprintf(error, error_len,
1998                      "Error while opening decoder for input stream "
1999                      "#%d:%d : %s",
2000                      ist->file_index, ist->st->index, errbuf);
2001             return ret;
2002         }
2003         assert_avoptions(ist->opts);
2004     }
2005
2006     ist->next_pts = AV_NOPTS_VALUE;
2007     ist->next_dts = AV_NOPTS_VALUE;
2008     ist->is_start = 1;
2009
2010     return 0;
2011 }
2012
2013 static InputStream *get_input_stream(OutputStream *ost)
2014 {
2015     if (ost->source_index >= 0)
2016         return input_streams[ost->source_index];
2017     return NULL;
2018 }
2019
2020 static int compare_int64(const void *a, const void *b)
2021 {
2022     int64_t va = *(int64_t *)a, vb = *(int64_t *)b;
2023     return va < vb ? -1 : va > vb ? +1 : 0;
2024 }
2025
2026 static void parse_forced_key_frames(char *kf, OutputStream *ost,
2027                                     AVCodecContext *avctx)
2028 {
2029     char *p;
2030     int n = 1, i, size, index = 0;
2031     int64_t t, *pts;
2032
2033     for (p = kf; *p; p++)
2034         if (*p == ',')
2035             n++;
2036     size = n;
2037     pts = av_malloc(sizeof(*pts) * size);
2038     if (!pts) {
2039         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
2040         exit_program(1);
2041     }
2042
2043     p = kf;
2044     for (i = 0; i < n; i++) {
2045         char *next = strchr(p, ',');
2046
2047         if (next)
2048             *next++ = 0;
2049
2050         if (!memcmp(p, "chapters", 8)) {
2051
2052             AVFormatContext *avf = output_files[ost->file_index]->ctx;
2053             int j;
2054
2055             if (avf->nb_chapters > INT_MAX - size ||
2056                 !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
2057                                      sizeof(*pts)))) {
2058                 av_log(NULL, AV_LOG_FATAL,
2059                        "Could not allocate forced key frames array.\n");
2060                 exit_program(1);
2061             }
2062             t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
2063             t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2064
2065             for (j = 0; j < avf->nb_chapters; j++) {
2066                 AVChapter *c = avf->chapters[j];
2067                 av_assert1(index < size);
2068                 pts[index++] = av_rescale_q(c->start, c->time_base,
2069                                             avctx->time_base) + t;
2070             }
2071
2072         } else {
2073
2074             t = parse_time_or_die("force_key_frames", p, 1);
2075             av_assert1(index < size);
2076             pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2077
2078         }
2079
2080         p = next;
2081     }
2082
2083     av_assert0(index == size);
2084     qsort(pts, size, sizeof(*pts), compare_int64);
2085     ost->forced_kf_count = size;
2086     ost->forced_kf_pts   = pts;
2087 }
2088
2089 static void report_new_stream(int input_index, AVPacket *pkt)
2090 {
2091     InputFile *file = input_files[input_index];
2092     AVStream *st = file->ctx->streams[pkt->stream_index];
2093
2094     if (pkt->stream_index < file->nb_streams_warn)
2095         return;
2096     av_log(file->ctx, AV_LOG_WARNING,
2097            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
2098            av_get_media_type_string(st->codec->codec_type),
2099            input_index, pkt->stream_index,
2100            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
2101     file->nb_streams_warn = pkt->stream_index + 1;
2102 }
2103
2104 static int transcode_init(void)
2105 {
2106     int ret = 0, i, j, k;
2107     AVFormatContext *oc;
2108     AVCodecContext *codec;
2109     OutputStream *ost;
2110     InputStream *ist;
2111     char error[1024];
2112     int want_sdp = 1;
2113
2114     for (i = 0; i < nb_filtergraphs; i++) {
2115         FilterGraph *fg = filtergraphs[i];
2116         for (j = 0; j < fg->nb_outputs; j++) {
2117             OutputFilter *ofilter = fg->outputs[j];
2118             if (!ofilter->ost || ofilter->ost->source_index >= 0)
2119                 continue;
2120             if (fg->nb_inputs != 1)
2121                 continue;
2122             for (k = nb_input_streams-1; k >= 0 ; k--)
2123                 if (fg->inputs[0]->ist == input_streams[k])
2124                     break;
2125             ofilter->ost->source_index = k;
2126         }
2127     }
2128
2129     /* init framerate emulation */
2130     for (i = 0; i < nb_input_files; i++) {
2131         InputFile *ifile = input_files[i];
2132         if (ifile->rate_emu)
2133             for (j = 0; j < ifile->nb_streams; j++)
2134                 input_streams[j + ifile->ist_index]->start = av_gettime();
2135     }
2136
2137     /* output stream init */
2138     for (i = 0; i < nb_output_files; i++) {
2139         oc = output_files[i]->ctx;
2140         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2141             av_dump_format(oc, i, oc->filename, 1);
2142             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2143             return AVERROR(EINVAL);
2144         }
2145     }
2146
2147     /* init complex filtergraphs */
2148     for (i = 0; i < nb_filtergraphs; i++)
2149         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2150             return ret;
2151
2152     /* for each output stream, we compute the right encoding parameters */
2153     for (i = 0; i < nb_output_streams; i++) {
2154         AVCodecContext *icodec = NULL;
2155         ost = output_streams[i];
2156         oc  = output_files[ost->file_index]->ctx;
2157         ist = get_input_stream(ost);
2158
2159         if (ost->attachment_filename)
2160             continue;
2161
2162         codec  = ost->st->codec;
2163
2164         if (ist) {
2165             icodec = ist->st->codec;
2166
2167             ost->st->disposition          = ist->st->disposition;
2168             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2169             codec->chroma_sample_location = icodec->chroma_sample_location;
2170         } else {
2171             for (j=0; j<oc->nb_streams; j++) {
2172                 AVStream *st = oc->streams[j];
2173                 if (st != ost->st && st->codec->codec_type == codec->codec_type)
2174                     break;
2175             }
2176             if (j == oc->nb_streams)
2177                 if (codec->codec_type == AVMEDIA_TYPE_AUDIO || codec->codec_type == AVMEDIA_TYPE_VIDEO)
2178                     ost->st->disposition = AV_DISPOSITION_DEFAULT;
2179         }
2180
2181         if (ost->stream_copy) {
2182             AVRational sar;
2183             uint64_t extra_size;
2184
2185             av_assert0(ist && !ost->filter);
2186
2187             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2188
2189             if (extra_size > INT_MAX) {
2190                 return AVERROR(EINVAL);
2191             }
2192
2193             /* if stream_copy is selected, no need to decode or encode */
2194             codec->codec_id   = icodec->codec_id;
2195             codec->codec_type = icodec->codec_type;
2196
2197             if (!codec->codec_tag) {
2198                 unsigned int codec_tag;
2199                 if (!oc->oformat->codec_tag ||
2200                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2201                      !av_codec_get_tag2(oc->oformat->codec_tag, icodec->codec_id, &codec_tag))
2202                     codec->codec_tag = icodec->codec_tag;
2203             }
2204
2205             codec->bit_rate       = icodec->bit_rate;
2206             codec->rc_max_rate    = icodec->rc_max_rate;
2207             codec->rc_buffer_size = icodec->rc_buffer_size;
2208             codec->field_order    = icodec->field_order;
2209             codec->extradata      = av_mallocz(extra_size);
2210             if (!codec->extradata) {
2211                 return AVERROR(ENOMEM);
2212             }
2213             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2214             codec->extradata_size= icodec->extradata_size;
2215             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2216
2217             codec->time_base = ist->st->time_base;
2218             /*
2219              * Avi is a special case here because it supports variable fps but
2220              * having the fps and timebase differe significantly adds quite some
2221              * overhead
2222              */
2223             if(!strcmp(oc->oformat->name, "avi")) {
2224                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2225                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2226                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2227                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2228                      || copy_tb==2){
2229                     codec->time_base.num = ist->st->r_frame_rate.den;
2230                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2231                     codec->ticks_per_frame = 2;
2232                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2233                                  && av_q2d(ist->st->time_base) < 1.0/500
2234                     || copy_tb==0){
2235                     codec->time_base = icodec->time_base;
2236                     codec->time_base.num *= icodec->ticks_per_frame;
2237                     codec->time_base.den *= 2;
2238                     codec->ticks_per_frame = 2;
2239                 }
2240             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2241                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2242                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2243                       && strcmp(oc->oformat->name, "f4v")
2244             ) {
2245                 if(   copy_tb<0 && icodec->time_base.den
2246                                 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2247                                 && av_q2d(ist->st->time_base) < 1.0/500
2248                    || copy_tb==0){
2249                     codec->time_base = icodec->time_base;
2250                     codec->time_base.num *= icodec->ticks_per_frame;
2251                 }
2252             }
2253             if (   codec->codec_tag == AV_RL32("tmcd")
2254                 && icodec->time_base.num < icodec->time_base.den
2255                 && icodec->time_base.num > 0
2256                 && 121LL*icodec->time_base.num > icodec->time_base.den) {
2257                 codec->time_base = icodec->time_base;
2258             }
2259
2260             if (ist && !ost->frame_rate.num)
2261                 ost->frame_rate = ist->framerate;
2262             if(ost->frame_rate.num)
2263                 codec->time_base = av_inv_q(ost->frame_rate);
2264
2265             av_reduce(&codec->time_base.num, &codec->time_base.den,
2266                         codec->time_base.num, codec->time_base.den, INT_MAX);
2267
2268             ost->parser = av_parser_init(codec->codec_id);
2269
2270             switch (codec->codec_type) {
2271             case AVMEDIA_TYPE_AUDIO:
2272                 if (audio_volume != 256) {
2273                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2274                     exit_program(1);
2275                 }
2276                 codec->channel_layout     = icodec->channel_layout;
2277                 codec->sample_rate        = icodec->sample_rate;
2278                 codec->channels           = icodec->channels;
2279                 codec->frame_size         = icodec->frame_size;
2280                 codec->audio_service_type = icodec->audio_service_type;
2281                 codec->block_align        = icodec->block_align;
2282                 if((codec->block_align == 1 || codec->block_align == 1152 || codec->block_align == 576) && codec->codec_id == AV_CODEC_ID_MP3)
2283                     codec->block_align= 0;
2284                 if(codec->codec_id == AV_CODEC_ID_AC3)
2285                     codec->block_align= 0;
2286                 break;
2287             case AVMEDIA_TYPE_VIDEO:
2288                 codec->pix_fmt            = icodec->pix_fmt;
2289                 codec->width              = icodec->width;
2290                 codec->height             = icodec->height;
2291                 codec->has_b_frames       = icodec->has_b_frames;
2292                 if (ost->frame_aspect_ratio.num) { // overridden by the -aspect cli option
2293                     sar =
2294                         av_mul_q(ost->frame_aspect_ratio,
2295                                  (AVRational){ codec->height, codec->width });
2296                     av_log(NULL, AV_LOG_WARNING, "Overriding aspect ratio "
2297                            "with stream copy may produce invalid files\n");
2298                 }
2299                 else if (ist->st->sample_aspect_ratio.num)
2300                     sar = ist->st->sample_aspect_ratio;
2301                 else
2302                     sar = icodec->sample_aspect_ratio;
2303                 ost->st->sample_aspect_ratio = codec->sample_aspect_ratio = sar;
2304                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2305                 break;
2306             case AVMEDIA_TYPE_SUBTITLE:
2307                 codec->width  = icodec->width;
2308                 codec->height = icodec->height;
2309                 break;
2310             case AVMEDIA_TYPE_DATA:
2311             case AVMEDIA_TYPE_ATTACHMENT:
2312                 break;
2313             default:
2314                 abort();
2315             }
2316         } else {
2317             if (!ost->enc)
2318                 ost->enc = avcodec_find_encoder(codec->codec_id);
2319             if (!ost->enc) {
2320                 /* should only happen when a default codec is not present. */
2321                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2322                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2323                 ret = AVERROR(EINVAL);
2324                 goto dump_format;
2325             }
2326
2327             if (ist)
2328                 ist->decoding_needed++;
2329             ost->encoding_needed = 1;
2330
2331             if (!ost->filter &&
2332                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2333                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2334                     FilterGraph *fg;
2335                     fg = init_simple_filtergraph(ist, ost);
2336                     if (configure_filtergraph(fg)) {
2337                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2338                         exit_program(1);
2339                     }
2340             }
2341
2342             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2343                 if (ost->filter && !ost->frame_rate.num)
2344                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2345                 if (ist && !ost->frame_rate.num)
2346                     ost->frame_rate = ist->framerate;
2347                 if (ist && !ost->frame_rate.num)
2348                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2349 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2350                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2351                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2352                     ost->frame_rate = ost->enc->supported_framerates[idx];
2353                 }
2354             }
2355
2356             switch (codec->codec_type) {
2357             case AVMEDIA_TYPE_AUDIO:
2358                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2359                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2360                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2361                 codec->channels       = avfilter_link_get_channels(ost->filter->filter->inputs[0]);
2362                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2363                 break;
2364             case AVMEDIA_TYPE_VIDEO:
2365                 codec->time_base = av_inv_q(ost->frame_rate);
2366                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2367                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2368                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2369                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2370                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2371                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2372                 }
2373                 for (j = 0; j < ost->forced_kf_count; j++)
2374                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2375                                                          AV_TIME_BASE_Q,
2376                                                          codec->time_base);
2377
2378                 codec->width  = ost->filter->filter->inputs[0]->w;
2379                 codec->height = ost->filter->filter->inputs[0]->h;
2380                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2381                     ost->frame_aspect_ratio.num ? // overridden by the -aspect cli option
2382                     av_mul_q(ost->frame_aspect_ratio, (AVRational){ codec->height, codec->width }) :
2383                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2384                 if (!strncmp(ost->enc->name, "libx264", 7) &&
2385                     codec->pix_fmt == AV_PIX_FMT_NONE &&
2386                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2387                     av_log(NULL, AV_LOG_WARNING,
2388                            "No pixel format specified, %s for H.264 encoding chosen.\n"
2389                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2390                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2391                 if (!strncmp(ost->enc->name, "mpeg2video", 10) &&
2392                     codec->pix_fmt == AV_PIX_FMT_NONE &&
2393                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2394                     av_log(NULL, AV_LOG_WARNING,
2395                            "No pixel format specified, %s for MPEG-2 encoding chosen.\n"
2396                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2397                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2398                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2399
2400                 if (!icodec ||
2401                     codec->width   != icodec->width  ||
2402                     codec->height  != icodec->height ||
2403                     codec->pix_fmt != icodec->pix_fmt) {
2404                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2405                 }
2406
2407                 if (ost->forced_keyframes) {
2408                     if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
2409                         ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
2410                                             forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
2411                         if (ret < 0) {
2412                             av_log(NULL, AV_LOG_ERROR,
2413                                    "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
2414                             return ret;
2415                         }
2416                         ost->forced_keyframes_expr_const_values[FKF_N] = 0;
2417                         ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
2418                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
2419                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;
2420                     } else {
2421                         parse_forced_key_frames(ost->forced_keyframes, ost, ost->st->codec);
2422                     }
2423                 }
2424                 break;
2425             case AVMEDIA_TYPE_SUBTITLE:
2426                 codec->time_base = (AVRational){1, 1000};
2427                 if (!codec->width) {
2428                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2429                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2430                 }
2431                 break;
2432             default:
2433                 abort();
2434                 break;
2435             }
2436             /* two pass mode */
2437             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2438                 char logfilename[1024];
2439                 FILE *f;
2440
2441                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2442                          ost->logfile_prefix ? ost->logfile_prefix :
2443                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2444                          i);
2445                 if (!strcmp(ost->enc->name, "libx264")) {
2446                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2447                 } else {
2448                     if (codec->flags & CODEC_FLAG_PASS2) {
2449                         char  *logbuffer;
2450                         size_t logbuffer_size;
2451                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2452                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2453                                    logfilename);
2454                             exit_program(1);
2455                         }
2456                         codec->stats_in = logbuffer;
2457                     }
2458                     if (codec->flags & CODEC_FLAG_PASS1) {
2459                         f = fopen(logfilename, "wb");
2460                         if (!f) {
2461                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2462                                 logfilename, strerror(errno));
2463                             exit_program(1);
2464                         }
2465                         ost->logfile = f;
2466                     }
2467                 }
2468             }
2469         }
2470     }
2471
2472     /* open each encoder */
2473     for (i = 0; i < nb_output_streams; i++) {
2474         ost = output_streams[i];
2475         if (ost->encoding_needed) {
2476             AVCodec      *codec = ost->enc;
2477             AVCodecContext *dec = NULL;
2478
2479             if ((ist = get_input_stream(ost)))
2480                 dec = ist->st->codec;
2481             if (dec && dec->subtitle_header) {
2482                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2483                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2484                 if (!ost->st->codec->subtitle_header) {
2485                     ret = AVERROR(ENOMEM);
2486                     goto dump_format;
2487                 }
2488                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2489                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2490             }
2491             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2492                 av_dict_set(&ost->opts, "threads", "auto", 0);
2493             if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
2494                 if (ret == AVERROR_EXPERIMENTAL)
2495                     abort_codec_experimental(codec, 1);
2496                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2497                         ost->file_index, ost->index);
2498                 goto dump_format;
2499             }
2500             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2501                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2502                 av_buffersink_set_frame_size(ost->filter->filter,
2503                                              ost->st->codec->frame_size);
2504             assert_avoptions(ost->opts);
2505             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2506                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2507                                              " It takes bits/s as argument, not kbits/s\n");
2508             extra_size += ost->st->codec->extradata_size;
2509         } else {
2510             av_opt_set_dict(ost->st->codec, &ost->opts);
2511         }
2512     }
2513
2514     /* init input streams */
2515     for (i = 0; i < nb_input_streams; i++)
2516         if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
2517             for (i = 0; i < nb_output_streams; i++) {
2518                 ost = output_streams[i];
2519                 avcodec_close(ost->st->codec);
2520             }
2521             goto dump_format;
2522         }
2523
2524     /* discard unused programs */
2525     for (i = 0; i < nb_input_files; i++) {
2526         InputFile *ifile = input_files[i];
2527         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2528             AVProgram *p = ifile->ctx->programs[j];
2529             int discard  = AVDISCARD_ALL;
2530
2531             for (k = 0; k < p->nb_stream_indexes; k++)
2532                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2533                     discard = AVDISCARD_DEFAULT;
2534                     break;
2535                 }
2536             p->discard = discard;
2537         }
2538     }
2539
2540     /* open files and write file headers */
2541     for (i = 0; i < nb_output_files; i++) {
2542         oc = output_files[i]->ctx;
2543         oc->interrupt_callback = int_cb;
2544         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2545             char errbuf[128];
2546             av_strerror(ret, errbuf, sizeof(errbuf));
2547             snprintf(error, sizeof(error),
2548                      "Could not write header for output file #%d "
2549                      "(incorrect codec parameters ?): %s",
2550                      i, errbuf);
2551             ret = AVERROR(EINVAL);
2552             goto dump_format;
2553         }
2554 //         assert_avoptions(output_files[i]->opts);
2555         if (strcmp(oc->oformat->name, "rtp")) {
2556             want_sdp = 0;
2557         }
2558     }
2559
2560  dump_format:
2561     /* dump the file output parameters - cannot be done before in case
2562        of stream copy */
2563     for (i = 0; i < nb_output_files; i++) {
2564         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2565     }
2566
2567     /* dump the stream mapping */
2568     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2569     for (i = 0; i < nb_input_streams; i++) {
2570         ist = input_streams[i];
2571
2572         for (j = 0; j < ist->nb_filters; j++) {
2573             if (ist->filters[j]->graph->graph_desc) {
2574                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2575                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2576                        ist->filters[j]->name);
2577                 if (nb_filtergraphs > 1)
2578                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2579                 av_log(NULL, AV_LOG_INFO, "\n");
2580             }
2581         }
2582     }
2583
2584     for (i = 0; i < nb_output_streams; i++) {
2585         ost = output_streams[i];
2586
2587         if (ost->attachment_filename) {
2588             /* an attached file */
2589             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2590                    ost->attachment_filename, ost->file_index, ost->index);
2591             continue;
2592         }
2593
2594         if (ost->filter && ost->filter->graph->graph_desc) {
2595             /* output from a complex graph */
2596             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2597             if (nb_filtergraphs > 1)
2598                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2599
2600             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2601                    ost->index, ost->enc ? ost->enc->name : "?");
2602             continue;
2603         }
2604
2605         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2606                input_streams[ost->source_index]->file_index,
2607                input_streams[ost->source_index]->st->index,
2608                ost->file_index,
2609                ost->index);
2610         if (ost->sync_ist != input_streams[ost->source_index])
2611             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2612                    ost->sync_ist->file_index,
2613                    ost->sync_ist->st->index);
2614         if (ost->stream_copy)
2615             av_log(NULL, AV_LOG_INFO, " (copy)");
2616         else
2617             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2618                    input_streams[ost->source_index]->dec->name : "?",
2619                    ost->enc ? ost->enc->name : "?");
2620         av_log(NULL, AV_LOG_INFO, "\n");
2621     }
2622
2623     if (ret) {
2624         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2625         return ret;
2626     }
2627
2628     if (want_sdp) {
2629         print_sdp();
2630     }
2631
2632     return 0;
2633 }
2634
2635 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2636 static int need_output(void)
2637 {
2638     int i;
2639
2640     for (i = 0; i < nb_output_streams; i++) {
2641         OutputStream *ost    = output_streams[i];
2642         OutputFile *of       = output_files[ost->file_index];
2643         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2644
2645         if (ost->finished ||
2646             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2647             continue;
2648         if (ost->frame_number >= ost->max_frames) {
2649             int j;
2650             for (j = 0; j < of->ctx->nb_streams; j++)
2651                 close_output_stream(output_streams[of->ost_index + j]);
2652             continue;
2653         }
2654
2655         return 1;
2656     }
2657
2658     return 0;
2659 }
2660
2661 /**
2662  * Select the output stream to process.
2663  *
2664  * @return  selected output stream, or NULL if none available
2665  */
2666 static OutputStream *choose_output(void)
2667 {
2668     int i;
2669     int64_t opts_min = INT64_MAX;
2670     OutputStream *ost_min = NULL;
2671
2672     for (i = 0; i < nb_output_streams; i++) {
2673         OutputStream *ost = output_streams[i];
2674         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2675                                     AV_TIME_BASE_Q);
2676         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2677             opts_min = opts;
2678             ost_min  = ost;
2679         }
2680     }
2681     return ost_min;
2682 }
2683
2684 static int check_keyboard_interaction(int64_t cur_time)
2685 {
2686     int i, ret, key;
2687     static int64_t last_time;
2688     if (received_nb_signals)
2689         return AVERROR_EXIT;
2690     /* read_key() returns 0 on EOF */
2691     if(cur_time - last_time >= 100000 && !run_as_daemon){
2692         key =  read_key();
2693         last_time = cur_time;
2694     }else
2695         key = -1;
2696     if (key == 'q')
2697         return AVERROR_EXIT;
2698     if (key == '+') av_log_set_level(av_log_get_level()+10);
2699     if (key == '-') av_log_set_level(av_log_get_level()-10);
2700     if (key == 's') qp_hist     ^= 1;
2701     if (key == 'h'){
2702         if (do_hex_dump){
2703             do_hex_dump = do_pkt_dump = 0;
2704         } else if(do_pkt_dump){
2705             do_hex_dump = 1;
2706         } else
2707             do_pkt_dump = 1;
2708         av_log_set_level(AV_LOG_DEBUG);
2709     }
2710     if (key == 'c' || key == 'C'){
2711         char buf[4096], target[64], command[256], arg[256] = {0};
2712         double time;
2713         int k, n = 0;
2714         fprintf(stderr, "\nEnter command: <target>|all <time>|-1 <command>[ <argument>]\n");
2715         i = 0;
2716         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2717             if (k > 0)
2718                 buf[i++] = k;
2719         buf[i] = 0;
2720         if (k > 0 &&
2721             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2722             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2723                    target, time, command, arg);
2724             for (i = 0; i < nb_filtergraphs; i++) {
2725                 FilterGraph *fg = filtergraphs[i];
2726                 if (fg->graph) {
2727                     if (time < 0) {
2728                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2729                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2730                         fprintf(stderr, "Command reply for stream %d: ret:%d res:\n%s", i, ret, buf);
2731                     } else if (key == 'c') {
2732                         fprintf(stderr, "Queing commands only on filters supporting the specific command is unsupported\n");
2733                         ret = AVERROR_PATCHWELCOME;
2734                     } else {
2735                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2736                     }
2737                 }
2738             }
2739         } else {
2740             av_log(NULL, AV_LOG_ERROR,
2741                    "Parse error, at least 3 arguments were expected, "
2742                    "only %d given in string '%s'\n", n, buf);
2743         }
2744     }
2745     if (key == 'd' || key == 'D'){
2746         int debug=0;
2747         if(key == 'D') {
2748             debug = input_streams[0]->st->codec->debug<<1;
2749             if(!debug) debug = 1;
2750             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2751                 debug += debug;
2752         }else
2753             if(scanf("%d", &debug)!=1)
2754                 fprintf(stderr,"error parsing debug value\n");
2755         for(i=0;i<nb_input_streams;i++) {
2756             input_streams[i]->st->codec->debug = debug;
2757         }
2758         for(i=0;i<nb_output_streams;i++) {
2759             OutputStream *ost = output_streams[i];
2760             ost->st->codec->debug = debug;
2761         }
2762         if(debug) av_log_set_level(AV_LOG_DEBUG);
2763         fprintf(stderr,"debug=%d\n", debug);
2764     }
2765     if (key == '?'){
2766         fprintf(stderr, "key    function\n"
2767                         "?      show this help\n"
2768                         "+      increase verbosity\n"
2769                         "-      decrease verbosity\n"
2770                         "c      Send command to first matching filter supporting it\n"
2771                         "C      Send/Que command to all matching filters\n"
2772                         "D      cycle through available debug modes\n"
2773                         "h      dump packets/hex press to cycle through the 3 states\n"
2774                         "q      quit\n"
2775                         "s      Show QP histogram\n"
2776         );
2777     }
2778     return 0;
2779 }
2780
2781 #if HAVE_PTHREADS
2782 static void *input_thread(void *arg)
2783 {
2784     InputFile *f = arg;
2785     int ret = 0;
2786
2787     while (!transcoding_finished && ret >= 0) {
2788         AVPacket pkt;
2789         ret = av_read_frame(f->ctx, &pkt);
2790
2791         if (ret == AVERROR(EAGAIN)) {
2792             av_usleep(10000);
2793             ret = 0;
2794             continue;
2795         } else if (ret < 0)
2796             break;
2797
2798         pthread_mutex_lock(&f->fifo_lock);
2799         while (!av_fifo_space(f->fifo))
2800             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2801
2802         av_dup_packet(&pkt);
2803         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2804
2805         pthread_mutex_unlock(&f->fifo_lock);
2806     }
2807
2808     f->finished = 1;
2809     return NULL;
2810 }
2811
2812 static void free_input_threads(void)
2813 {
2814     int i;
2815
2816     if (nb_input_files == 1)
2817         return;
2818
2819     transcoding_finished = 1;
2820
2821     for (i = 0; i < nb_input_files; i++) {
2822         InputFile *f = input_files[i];
2823         AVPacket pkt;
2824
2825         if (!f->fifo || f->joined)
2826             continue;
2827
2828         pthread_mutex_lock(&f->fifo_lock);
2829         while (av_fifo_size(f->fifo)) {
2830             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2831             av_free_packet(&pkt);
2832         }
2833         pthread_cond_signal(&f->fifo_cond);
2834         pthread_mutex_unlock(&f->fifo_lock);
2835
2836         pthread_join(f->thread, NULL);
2837         f->joined = 1;
2838
2839         while (av_fifo_size(f->fifo)) {
2840             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2841             av_free_packet(&pkt);
2842         }
2843         av_fifo_free(f->fifo);
2844     }
2845 }
2846
2847 static int init_input_threads(void)
2848 {
2849     int i, ret;
2850
2851     if (nb_input_files == 1)
2852         return 0;
2853
2854     for (i = 0; i < nb_input_files; i++) {
2855         InputFile *f = input_files[i];
2856
2857         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2858             return AVERROR(ENOMEM);
2859
2860         pthread_mutex_init(&f->fifo_lock, NULL);
2861         pthread_cond_init (&f->fifo_cond, NULL);
2862
2863         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2864             return AVERROR(ret);
2865     }
2866     return 0;
2867 }
2868
2869 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2870 {
2871     int ret = 0;
2872
2873     pthread_mutex_lock(&f->fifo_lock);
2874
2875     if (av_fifo_size(f->fifo)) {
2876         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2877         pthread_cond_signal(&f->fifo_cond);
2878     } else {
2879         if (f->finished)
2880             ret = AVERROR_EOF;
2881         else
2882             ret = AVERROR(EAGAIN);
2883     }
2884
2885     pthread_mutex_unlock(&f->fifo_lock);
2886
2887     return ret;
2888 }
2889 #endif
2890
2891 static int get_input_packet(InputFile *f, AVPacket *pkt)
2892 {
2893     if (f->rate_emu) {
2894         int i;
2895         for (i = 0; i < f->nb_streams; i++) {
2896             InputStream *ist = input_streams[f->ist_index + i];
2897             int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
2898             int64_t now = av_gettime() - ist->start;
2899             if (pts > now)
2900                 return AVERROR(EAGAIN);
2901         }
2902     }
2903
2904 #if HAVE_PTHREADS
2905     if (nb_input_files > 1)
2906         return get_input_packet_mt(f, pkt);
2907 #endif
2908     return av_read_frame(f->ctx, pkt);
2909 }
2910
2911 static int got_eagain(void)
2912 {
2913     int i;
2914     for (i = 0; i < nb_output_streams; i++)
2915         if (output_streams[i]->unavailable)
2916             return 1;
2917     return 0;
2918 }
2919
2920 static void reset_eagain(void)
2921 {
2922     int i;
2923     for (i = 0; i < nb_input_files; i++)
2924         input_files[i]->eagain = 0;
2925     for (i = 0; i < nb_output_streams; i++)
2926         output_streams[i]->unavailable = 0;
2927 }
2928
2929 /*
2930  * Return
2931  * - 0 -- one packet was read and processed
2932  * - AVERROR(EAGAIN) -- no packets were available for selected file,
2933  *   this function should be called again
2934  * - AVERROR_EOF -- this function should not be called again
2935  */
2936 static int process_input(int file_index)
2937 {
2938     InputFile *ifile = input_files[file_index];
2939     AVFormatContext *is;
2940     InputStream *ist;
2941     AVPacket pkt;
2942     int ret, i, j;
2943
2944     is  = ifile->ctx;
2945     ret = get_input_packet(ifile, &pkt);
2946
2947     if (ret == AVERROR(EAGAIN)) {
2948         ifile->eagain = 1;
2949         return ret;
2950     }
2951     if (ret < 0) {
2952         if (ret != AVERROR_EOF) {
2953             print_error(is->filename, ret);
2954             if (exit_on_error)
2955                 exit_program(1);
2956         }
2957         ifile->eof_reached = 1;
2958
2959         for (i = 0; i < ifile->nb_streams; i++) {
2960             ist = input_streams[ifile->ist_index + i];
2961             if (ist->decoding_needed)
2962                 output_packet(ist, NULL);
2963
2964             /* mark all outputs that don't go through lavfi as finished */
2965             for (j = 0; j < nb_output_streams; j++) {
2966                 OutputStream *ost = output_streams[j];
2967
2968                 if (ost->source_index == ifile->ist_index + i &&
2969                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2970                     close_output_stream(ost);
2971             }
2972         }
2973
2974         return AVERROR(EAGAIN);
2975     }
2976
2977     reset_eagain();
2978
2979     if (do_pkt_dump) {
2980         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2981                          is->streams[pkt.stream_index]);
2982     }
2983     /* the following test is needed in case new streams appear
2984        dynamically in stream : we ignore them */
2985     if (pkt.stream_index >= ifile->nb_streams) {
2986         report_new_stream(file_index, &pkt);
2987         goto discard_packet;
2988     }
2989
2990     ist = input_streams[ifile->ist_index + pkt.stream_index];
2991     if (ist->discard)
2992         goto discard_packet;
2993
2994     if (debug_ts) {
2995         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
2996                "next_dts:%s next_dts_time:%s next_pts:%s next_pts_time:%s pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%s off_time:%s\n",
2997                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2998                av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
2999                av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
3000                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3001                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3002                av_ts2str(input_files[ist->file_index]->ts_offset),
3003                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3004     }
3005
3006     if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
3007         int64_t stime, stime2;
3008         // Correcting starttime based on the enabled streams
3009         // FIXME this ideally should be done before the first use of starttime but we do not know which are the enabled streams at that point.
3010         //       so we instead do it here as part of discontinuity handling
3011         if (   ist->next_dts == AV_NOPTS_VALUE
3012             && ifile->ts_offset == -is->start_time
3013             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
3014             int64_t new_start_time = INT64_MAX;
3015             for (i=0; i<is->nb_streams; i++) {
3016                 AVStream *st = is->streams[i];
3017                 if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
3018                     continue;
3019                 new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
3020             }
3021             if (new_start_time > is->start_time) {
3022                 av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
3023                 ifile->ts_offset = -new_start_time;
3024             }
3025         }
3026
3027         stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
3028         stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
3029         ist->wrap_correction_done = 1;
3030
3031         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
3032             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
3033             ist->wrap_correction_done = 0;
3034         }
3035         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
3036             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
3037             ist->wrap_correction_done = 0;
3038         }
3039     }
3040
3041     if (pkt.dts != AV_NOPTS_VALUE)
3042         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3043     if (pkt.pts != AV_NOPTS_VALUE)
3044         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3045
3046     if (pkt.pts != AV_NOPTS_VALUE)
3047         pkt.pts *= ist->ts_scale;
3048     if (pkt.dts != AV_NOPTS_VALUE)
3049         pkt.dts *= ist->ts_scale;
3050
3051     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts == AV_NOPTS_VALUE && !copy_ts
3052         && (is->iformat->flags & AVFMT_TS_DISCONT) && ifile->last_ts != AV_NOPTS_VALUE) {
3053         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3054         int64_t delta   = pkt_dts - ifile->last_ts;
3055         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3056             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3057                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)){
3058             ifile->ts_offset -= delta;
3059             av_log(NULL, AV_LOG_DEBUG,
3060                    "Inter stream timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3061                    delta, ifile->ts_offset);
3062             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3063             if (pkt.pts != AV_NOPTS_VALUE)
3064                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3065         }
3066     }
3067
3068     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
3069         !copy_ts) {
3070         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3071         int64_t delta   = pkt_dts - ist->next_dts;
3072         if (is->iformat->flags & AVFMT_TS_DISCONT) {
3073         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3074             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3075                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3076             pkt_dts + AV_TIME_BASE/10 < ist->pts){
3077             ifile->ts_offset -= delta;
3078             av_log(NULL, AV_LOG_DEBUG,
3079                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3080                    delta, ifile->ts_offset);
3081             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3082             if (pkt.pts != AV_NOPTS_VALUE)
3083                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3084         }
3085         } else {
3086             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3087                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
3088                ) {
3089                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3090                 pkt.dts = AV_NOPTS_VALUE;
3091             }
3092             if (pkt.pts != AV_NOPTS_VALUE){
3093                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3094                 delta   = pkt_pts - ist->next_dts;
3095                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3096                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
3097                    ) {
3098                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3099                     pkt.pts = AV_NOPTS_VALUE;
3100                 }
3101             }
3102         }
3103     }
3104
3105     if (pkt.dts != AV_NOPTS_VALUE)
3106         ifile->last_ts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3107
3108     if (debug_ts) {
3109         av_log(NULL, AV_LOG_INFO, "demuxer+ffmpeg -> ist_index:%d type:%s pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%s off_time:%s\n",
3110                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
3111                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3112                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3113                av_ts2str(input_files[ist->file_index]->ts_offset),
3114                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3115     }
3116
3117     sub2video_heartbeat(ist, pkt.pts);
3118
3119     ret = output_packet(ist, &pkt);
3120     if (ret < 0) {
3121         char buf[128];
3122         av_strerror(ret, buf, sizeof(buf));
3123         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
3124                 ist->file_index, ist->st->index, buf);
3125         if (exit_on_error)
3126             exit_program(1);
3127     }
3128
3129 discard_packet:
3130     av_free_packet(&pkt);
3131
3132     return 0;
3133 }
3134
3135 /**
3136  * Perform a step of transcoding for the specified filter graph.
3137  *
3138  * @param[in]  graph     filter graph to consider
3139  * @param[out] best_ist  input stream where a frame would allow to continue
3140  * @return  0 for success, <0 for error
3141  */
3142 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
3143 {
3144     int i, ret;
3145     int nb_requests, nb_requests_max = 0;
3146     InputFilter *ifilter;
3147     InputStream *ist;
3148
3149     *best_ist = NULL;
3150     ret = avfilter_graph_request_oldest(graph->graph);
3151     if (ret >= 0)
3152         return reap_filters();
3153
3154     if (ret == AVERROR_EOF) {
3155         ret = reap_filters();
3156         for (i = 0; i < graph->nb_outputs; i++)
3157             close_output_stream(graph->outputs[i]->ost);
3158         return ret;
3159     }
3160     if (ret != AVERROR(EAGAIN))
3161         return ret;
3162
3163     for (i = 0; i < graph->nb_inputs; i++) {
3164         ifilter = graph->inputs[i];
3165         ist = ifilter->ist;
3166         if (input_files[ist->file_index]->eagain ||
3167             input_files[ist->file_index]->eof_reached)
3168             continue;
3169         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
3170         if (nb_requests > nb_requests_max) {
3171             nb_requests_max = nb_requests;
3172             *best_ist = ist;
3173         }
3174     }
3175
3176     if (!*best_ist)
3177         for (i = 0; i < graph->nb_outputs; i++)
3178             graph->outputs[i]->ost->unavailable = 1;
3179
3180     return 0;
3181 }
3182
3183 /**
3184  * Run a single step of transcoding.
3185  *
3186  * @return  0 for success, <0 for error
3187  */
3188 static int transcode_step(void)
3189 {
3190     OutputStream *ost;
3191     InputStream  *ist;
3192     int ret;
3193
3194     ost = choose_output();
3195     if (!ost) {
3196         if (got_eagain()) {
3197             reset_eagain();
3198             av_usleep(10000);
3199             return 0;
3200         }
3201         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
3202         return AVERROR_EOF;
3203     }
3204
3205     if (ost->filter) {
3206         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
3207             return ret;
3208         if (!ist)
3209             return 0;
3210     } else {
3211         av_assert0(ost->source_index >= 0);
3212         ist = input_streams[ost->source_index];
3213     }
3214
3215     ret = process_input(ist->file_index);
3216     if (ret == AVERROR(EAGAIN)) {
3217         if (input_files[ist->file_index]->eagain)
3218             ost->unavailable = 1;
3219         return 0;
3220     }
3221     if (ret < 0)
3222         return ret == AVERROR_EOF ? 0 : ret;
3223
3224     return reap_filters();
3225 }
3226
3227 /*
3228  * The following code is the main loop of the file converter
3229  */
3230 static int transcode(void)
3231 {
3232     int ret, i;
3233     AVFormatContext *os;
3234     OutputStream *ost;
3235     InputStream *ist;
3236     int64_t timer_start;
3237
3238     ret = transcode_init();
3239     if (ret < 0)
3240         goto fail;
3241
3242     if (stdin_interaction) {
3243         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3244     }
3245
3246     timer_start = av_gettime();
3247
3248 #if HAVE_PTHREADS
3249     if ((ret = init_input_threads()) < 0)
3250         goto fail;
3251 #endif
3252
3253     while (!received_sigterm) {
3254         int64_t cur_time= av_gettime();
3255
3256         /* if 'q' pressed, exits */
3257         if (stdin_interaction)
3258             if (check_keyboard_interaction(cur_time) < 0)
3259                 break;
3260
3261         /* check if there's any stream where output is still needed */
3262         if (!need_output()) {
3263             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3264             break;
3265         }
3266
3267         ret = transcode_step();
3268         if (ret < 0) {
3269             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
3270                 continue;
3271
3272             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
3273             break;
3274         }
3275
3276         /* dump report by using the output first video and audio streams */
3277         print_report(0, timer_start, cur_time);
3278     }
3279 #if HAVE_PTHREADS
3280     free_input_threads();
3281 #endif
3282
3283     /* at the end of stream, we must flush the decoder buffers */
3284     for (i = 0; i < nb_input_streams; i++) {
3285         ist = input_streams[i];
3286         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3287             output_packet(ist, NULL);
3288         }
3289     }
3290     flush_encoders();
3291
3292     term_exit();
3293
3294     /* write the trailer if needed and close file */
3295     for (i = 0; i < nb_output_files; i++) {
3296         os = output_files[i]->ctx;
3297         av_write_trailer(os);
3298     }
3299
3300     /* dump report by using the first video and audio streams */
3301     print_report(1, timer_start, av_gettime());
3302
3303     /* close each encoder */
3304     for (i = 0; i < nb_output_streams; i++) {
3305         ost = output_streams[i];
3306         if (ost->encoding_needed) {
3307             av_freep(&ost->st->codec->stats_in);
3308             avcodec_close(ost->st->codec);
3309         }
3310     }
3311
3312     /* close each decoder */
3313     for (i = 0; i < nb_input_streams; i++) {
3314         ist = input_streams[i];
3315         if (ist->decoding_needed) {
3316             avcodec_close(ist->st->codec);
3317         }
3318     }
3319
3320     /* finished ! */
3321     ret = 0;
3322
3323  fail:
3324 #if HAVE_PTHREADS
3325     free_input_threads();
3326 #endif
3327
3328     if (output_streams) {
3329         for (i = 0; i < nb_output_streams; i++) {
3330             ost = output_streams[i];
3331             if (ost) {
3332                 if (ost->stream_copy)
3333                     av_freep(&ost->st->codec->extradata);
3334                 if (ost->logfile) {
3335                     fclose(ost->logfile);
3336                     ost->logfile = NULL;
3337                 }
3338                 av_freep(&ost->st->codec->subtitle_header);
3339                 av_freep(&ost->forced_kf_pts);
3340                 av_freep(&ost->apad);
3341                 av_dict_free(&ost->opts);
3342                 av_dict_free(&ost->swr_opts);
3343                 av_dict_free(&ost->resample_opts);
3344             }
3345         }
3346     }
3347     return ret;
3348 }
3349
3350
3351 static int64_t getutime(void)
3352 {
3353 #if HAVE_GETRUSAGE
3354     struct rusage rusage;
3355
3356     getrusage(RUSAGE_SELF, &rusage);
3357     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3358 #elif HAVE_GETPROCESSTIMES
3359     HANDLE proc;
3360     FILETIME c, e, k, u;
3361     proc = GetCurrentProcess();
3362     GetProcessTimes(proc, &c, &e, &k, &u);
3363     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3364 #else
3365     return av_gettime();
3366 #endif
3367 }
3368
3369 static int64_t getmaxrss(void)
3370 {
3371 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3372     struct rusage rusage;
3373     getrusage(RUSAGE_SELF, &rusage);
3374     return (int64_t)rusage.ru_maxrss * 1024;
3375 #elif HAVE_GETPROCESSMEMORYINFO
3376     HANDLE proc;
3377     PROCESS_MEMORY_COUNTERS memcounters;
3378     proc = GetCurrentProcess();
3379     memcounters.cb = sizeof(memcounters);
3380     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3381     return memcounters.PeakPagefileUsage;
3382 #else
3383     return 0;
3384 #endif
3385 }
3386
3387 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3388 {
3389 }
3390
3391 int main(int argc, char **argv)
3392 {
3393     int ret;
3394     int64_t ti;
3395
3396     register_exit(ffmpeg_cleanup);
3397
3398     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3399
3400     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3401     parse_loglevel(argc, argv, options);
3402
3403     if(argc>1 && !strcmp(argv[1], "-d")){
3404         run_as_daemon=1;
3405         av_log_set_callback(log_callback_null);
3406         argc--;
3407         argv++;
3408     }
3409
3410     avcodec_register_all();
3411 #if CONFIG_AVDEVICE
3412     avdevice_register_all();
3413 #endif
3414     avfilter_register_all();
3415     av_register_all();
3416     avformat_network_init();
3417
3418     show_banner(argc, argv, options);
3419
3420     term_init();
3421
3422     /* parse options and open all input/output files */
3423     ret = ffmpeg_parse_options(argc, argv);
3424     if (ret < 0)
3425         exit_program(1);
3426
3427     if (nb_output_files <= 0 && nb_input_files == 0) {
3428         show_usage();
3429         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3430         exit_program(1);
3431     }
3432
3433     /* file converter / grab */
3434     if (nb_output_files <= 0) {
3435         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3436         exit_program(1);
3437     }
3438
3439 //     if (nb_input_files == 0) {
3440 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3441 //         exit_program(1);
3442 //     }
3443
3444     current_time = ti = getutime();
3445     if (transcode() < 0)
3446         exit_program(1);
3447     ti = getutime() - ti;
3448     if (do_benchmark) {
3449         printf("bench: utime=%0.3fs\n", ti / 1000000.0);
3450     }
3451     av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" frames successfully decoded, %"PRIu64" decoding errors\n",
3452            decode_error_stat[0], decode_error_stat[1]);
3453     if ((decode_error_stat[0] + decode_error_stat[1]) * max_error_rate < decode_error_stat[1])
3454         exit_program(69);
3455
3456     exit_program(received_nb_signals ? 255 : 0);
3457     return 0;
3458 }