Merge commit '650a5206a944fd36a42d92f98e745972056b1f7c'
[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 #include <stdint.h>
34
35 #if HAVE_ISATTY
36 #if HAVE_IO_H
37 #include <io.h>
38 #endif
39 #if HAVE_UNISTD_H
40 #include <unistd.h>
41 #endif
42 #endif
43
44 #include "libavformat/avformat.h"
45 #include "libavdevice/avdevice.h"
46 #include "libswresample/swresample.h"
47 #include "libavutil/opt.h"
48 #include "libavutil/channel_layout.h"
49 #include "libavutil/parseutils.h"
50 #include "libavutil/samplefmt.h"
51 #include "libavutil/fifo.h"
52 #include "libavutil/intreadwrite.h"
53 #include "libavutil/dict.h"
54 #include "libavutil/mathematics.h"
55 #include "libavutil/pixdesc.h"
56 #include "libavutil/avstring.h"
57 #include "libavutil/libm.h"
58 #include "libavutil/imgutils.h"
59 #include "libavutil/timestamp.h"
60 #include "libavutil/bprint.h"
61 #include "libavutil/time.h"
62 #include "libavformat/os_support.h"
63
64 #include "libavformat/ffm.h" // not public API
65
66 # include "libavfilter/avcodec.h"
67 # include "libavfilter/avfilter.h"
68 # include "libavfilter/buffersrc.h"
69 # include "libavfilter/buffersink.h"
70
71 #if HAVE_SYS_RESOURCE_H
72 #include <sys/time.h>
73 #include <sys/types.h>
74 #include <sys/resource.h>
75 #elif HAVE_GETPROCESSTIMES
76 #include <windows.h>
77 #endif
78 #if HAVE_GETPROCESSMEMORYINFO
79 #include <windows.h>
80 #include <psapi.h>
81 #endif
82
83 #if HAVE_SYS_SELECT_H
84 #include <sys/select.h>
85 #endif
86
87 #if HAVE_TERMIOS_H
88 #include <fcntl.h>
89 #include <sys/ioctl.h>
90 #include <sys/time.h>
91 #include <termios.h>
92 #elif HAVE_KBHIT
93 #include <conio.h>
94 #endif
95
96 #if HAVE_PTHREADS
97 #include <pthread.h>
98 #endif
99
100 #include <time.h>
101
102 #include "ffmpeg.h"
103 #include "cmdutils.h"
104
105 #include "libavutil/avassert.h"
106
107 const char program_name[] = "ffmpeg";
108 const int program_birth_year = 2000;
109
110 static FILE *vstats_file;
111
112 const char *const forced_keyframes_const_names[] = {
113     "n",
114     "n_forced",
115     "prev_forced_n",
116     "prev_forced_t",
117     "t",
118     NULL
119 };
120
121 static void do_video_stats(OutputStream *ost, int frame_size);
122 static int64_t getutime(void);
123 static int64_t getmaxrss(void);
124
125 static int run_as_daemon  = 0;
126 static int nb_frames_dup = 0;
127 static int nb_frames_drop = 0;
128 static int64_t decode_error_stat[2];
129
130 static int current_time;
131 AVIOContext *progress_avio = NULL;
132
133 static uint8_t *subtitle_out;
134
135 #if HAVE_PTHREADS
136 /* signal to input threads that they should exit; set by the main thread */
137 static int transcoding_finished;
138 #endif
139
140 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
141
142 InputStream **input_streams = NULL;
143 int        nb_input_streams = 0;
144 InputFile   **input_files   = NULL;
145 int        nb_input_files   = 0;
146
147 OutputStream **output_streams = NULL;
148 int         nb_output_streams = 0;
149 OutputFile   **output_files   = NULL;
150 int         nb_output_files   = 0;
151
152 FilterGraph **filtergraphs;
153 int        nb_filtergraphs;
154
155 #if HAVE_TERMIOS_H
156
157 /* init terminal so that we can grab keys */
158 static struct termios oldtty;
159 static int restore_tty;
160 #endif
161
162 static void free_input_threads(void);
163
164
165 /* sub2video hack:
166    Convert subtitles to video with alpha to insert them in filter graphs.
167    This is a temporary solution until libavfilter gets real subtitles support.
168  */
169
170 static int sub2video_get_blank_frame(InputStream *ist)
171 {
172     int ret;
173     AVFrame *frame = ist->sub2video.frame;
174
175     av_frame_unref(frame);
176     ist->sub2video.frame->width  = ist->sub2video.w;
177     ist->sub2video.frame->height = ist->sub2video.h;
178     ist->sub2video.frame->format = AV_PIX_FMT_RGB32;
179     if ((ret = av_frame_get_buffer(frame, 32)) < 0)
180         return ret;
181     memset(frame->data[0], 0, frame->height * frame->linesize[0]);
182     return 0;
183 }
184
185 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
186                                 AVSubtitleRect *r)
187 {
188     uint32_t *pal, *dst2;
189     uint8_t *src, *src2;
190     int x, y;
191
192     if (r->type != SUBTITLE_BITMAP) {
193         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
194         return;
195     }
196     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
197         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
198         return;
199     }
200
201     dst += r->y * dst_linesize + r->x * 4;
202     src = r->pict.data[0];
203     pal = (uint32_t *)r->pict.data[1];
204     for (y = 0; y < r->h; y++) {
205         dst2 = (uint32_t *)dst;
206         src2 = src;
207         for (x = 0; x < r->w; x++)
208             *(dst2++) = pal[*(src2++)];
209         dst += dst_linesize;
210         src += r->pict.linesize[0];
211     }
212 }
213
214 static void sub2video_push_ref(InputStream *ist, int64_t pts)
215 {
216     AVFrame *frame = ist->sub2video.frame;
217     int i;
218
219     av_assert1(frame->data[0]);
220     ist->sub2video.last_pts = frame->pts = pts;
221     for (i = 0; i < ist->nb_filters; i++)
222         av_buffersrc_add_frame_flags(ist->filters[i]->filter, frame,
223                                      AV_BUFFERSRC_FLAG_KEEP_REF |
224                                      AV_BUFFERSRC_FLAG_PUSH);
225 }
226
227 static void sub2video_update(InputStream *ist, AVSubtitle *sub)
228 {
229     int w = ist->sub2video.w, h = ist->sub2video.h;
230     AVFrame *frame = ist->sub2video.frame;
231     int8_t *dst;
232     int     dst_linesize;
233     int num_rects, i;
234     int64_t pts, end_pts;
235
236     if (!frame)
237         return;
238     if (sub) {
239         pts       = av_rescale_q(sub->pts + sub->start_display_time * 1000,
240                                  AV_TIME_BASE_Q, ist->st->time_base);
241         end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000,
242                                  AV_TIME_BASE_Q, ist->st->time_base);
243         num_rects = sub->num_rects;
244     } else {
245         pts       = ist->sub2video.end_pts;
246         end_pts   = INT64_MAX;
247         num_rects = 0;
248     }
249     if (sub2video_get_blank_frame(ist) < 0) {
250         av_log(ist->st->codec, AV_LOG_ERROR,
251                "Impossible to get a blank canvas.\n");
252         return;
253     }
254     dst          = frame->data    [0];
255     dst_linesize = frame->linesize[0];
256     for (i = 0; i < num_rects; i++)
257         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
258     sub2video_push_ref(ist, pts);
259     ist->sub2video.end_pts = end_pts;
260 }
261
262 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
263 {
264     InputFile *infile = input_files[ist->file_index];
265     int i, j, nb_reqs;
266     int64_t pts2;
267
268     /* When a frame is read from a file, examine all sub2video streams in
269        the same file and send the sub2video frame again. Otherwise, decoded
270        video frames could be accumulating in the filter graph while a filter
271        (possibly overlay) is desperately waiting for a subtitle frame. */
272     for (i = 0; i < infile->nb_streams; i++) {
273         InputStream *ist2 = input_streams[infile->ist_index + i];
274         if (!ist2->sub2video.frame)
275             continue;
276         /* subtitles seem to be usually muxed ahead of other streams;
277            if not, substracting a larger time here is necessary */
278         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
279         /* do not send the heartbeat frame if the subtitle is already ahead */
280         if (pts2 <= ist2->sub2video.last_pts)
281             continue;
282         if (pts2 >= ist2->sub2video.end_pts || !ist2->sub2video.frame->data[0])
283             sub2video_update(ist2, NULL);
284         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
285             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
286         if (nb_reqs)
287             sub2video_push_ref(ist2, pts2);
288     }
289 }
290
291 static void sub2video_flush(InputStream *ist)
292 {
293     int i;
294
295     if (ist->sub2video.end_pts < INT64_MAX)
296         sub2video_update(ist, NULL);
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 static void term_exit_sigsafe(void)
304 {
305 #if HAVE_TERMIOS_H
306     if(restore_tty)
307         tcsetattr (0, TCSANOW, &oldtty);
308 #endif
309 }
310
311 void term_exit(void)
312 {
313     av_log(NULL, AV_LOG_QUIET, "%s", "");
314     term_exit_sigsafe();
315 }
316
317 static volatile int received_sigterm = 0;
318 static volatile int received_nb_signals = 0;
319 static volatile int transcode_init_done = 0;
320 static int main_return_code = 0;
321
322 static void
323 sigterm_handler(int sig)
324 {
325     received_sigterm = sig;
326     received_nb_signals++;
327     term_exit_sigsafe();
328     if(received_nb_signals > 3)
329         exit(123);
330 }
331
332 void term_init(void)
333 {
334 #if HAVE_TERMIOS_H
335     if(!run_as_daemon){
336         struct termios tty;
337         int istty = 1;
338 #if HAVE_ISATTY
339         istty = isatty(0) && isatty(2);
340 #endif
341         if (istty && tcgetattr (0, &tty) == 0) {
342             oldtty = tty;
343             restore_tty = 1;
344
345             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
346                              |INLCR|IGNCR|ICRNL|IXON);
347             tty.c_oflag |= OPOST;
348             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
349             tty.c_cflag &= ~(CSIZE|PARENB);
350             tty.c_cflag |= CS8;
351             tty.c_cc[VMIN] = 1;
352             tty.c_cc[VTIME] = 0;
353
354             tcsetattr (0, TCSANOW, &tty);
355         }
356         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
357     }
358 #endif
359     avformat_network_deinit();
360
361     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
362     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
363 #ifdef SIGXCPU
364     signal(SIGXCPU, sigterm_handler);
365 #endif
366 }
367
368 /* read a key without blocking */
369 static int read_key(void)
370 {
371     unsigned char ch;
372 #if HAVE_TERMIOS_H
373     int n = 1;
374     struct timeval tv;
375     fd_set rfds;
376
377     FD_ZERO(&rfds);
378     FD_SET(0, &rfds);
379     tv.tv_sec = 0;
380     tv.tv_usec = 0;
381     n = select(1, &rfds, NULL, NULL, &tv);
382     if (n > 0) {
383         n = read(0, &ch, 1);
384         if (n == 1)
385             return ch;
386
387         return n;
388     }
389 #elif HAVE_KBHIT
390 #    if HAVE_PEEKNAMEDPIPE
391     static int is_pipe;
392     static HANDLE input_handle;
393     DWORD dw, nchars;
394     if(!input_handle){
395         input_handle = GetStdHandle(STD_INPUT_HANDLE);
396         is_pipe = !GetConsoleMode(input_handle, &dw);
397     }
398
399     if (stdin->_cnt > 0) {
400         read(0, &ch, 1);
401         return ch;
402     }
403     if (is_pipe) {
404         /* When running under a GUI, you will end here. */
405         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
406             // input pipe may have been closed by the program that ran ffmpeg
407             return -1;
408         }
409         //Read it
410         if(nchars != 0) {
411             read(0, &ch, 1);
412             return ch;
413         }else{
414             return -1;
415         }
416     }
417 #    endif
418     if(kbhit())
419         return(getch());
420 #endif
421     return -1;
422 }
423
424 static int decode_interrupt_cb(void *ctx)
425 {
426     return received_nb_signals > transcode_init_done;
427 }
428
429 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
430
431 static void ffmpeg_cleanup(int ret)
432 {
433     int i, j;
434
435     if (do_benchmark) {
436         int maxrss = getmaxrss() / 1024;
437         printf("bench: maxrss=%ikB\n", maxrss);
438     }
439
440     for (i = 0; i < nb_filtergraphs; i++) {
441         FilterGraph *fg = filtergraphs[i];
442         avfilter_graph_free(&fg->graph);
443         for (j = 0; j < fg->nb_inputs; j++) {
444             av_freep(&fg->inputs[j]->name);
445             av_freep(&fg->inputs[j]);
446         }
447         av_freep(&fg->inputs);
448         for (j = 0; j < fg->nb_outputs; j++) {
449             av_freep(&fg->outputs[j]->name);
450             av_freep(&fg->outputs[j]);
451         }
452         av_freep(&fg->outputs);
453         av_freep(&fg->graph_desc);
454
455         av_freep(&filtergraphs[i]);
456     }
457     av_freep(&filtergraphs);
458
459     av_freep(&subtitle_out);
460
461     /* close files */
462     for (i = 0; i < nb_output_files; i++) {
463         OutputFile *of = output_files[i];
464         AVFormatContext *s = of->ctx;
465         if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE) && s->pb)
466             avio_close(s->pb);
467         avformat_free_context(s);
468         av_dict_free(&of->opts);
469
470         av_freep(&output_files[i]);
471     }
472     for (i = 0; i < nb_output_streams; i++) {
473         OutputStream *ost = output_streams[i];
474         AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
475         while (bsfc) {
476             AVBitStreamFilterContext *next = bsfc->next;
477             av_bitstream_filter_close(bsfc);
478             bsfc = next;
479         }
480         ost->bitstream_filters = NULL;
481         av_frame_free(&ost->filtered_frame);
482
483         av_parser_close(ost->parser);
484
485         av_freep(&ost->forced_keyframes);
486         av_expr_free(ost->forced_keyframes_pexpr);
487         av_freep(&ost->avfilter);
488         av_freep(&ost->logfile_prefix);
489
490         av_freep(&output_streams[i]);
491     }
492 #if HAVE_PTHREADS
493     free_input_threads();
494 #endif
495     for (i = 0; i < nb_input_files; i++) {
496         avformat_close_input(&input_files[i]->ctx);
497         av_freep(&input_files[i]);
498     }
499     for (i = 0; i < nb_input_streams; i++) {
500         InputStream *ist = input_streams[i];
501
502         av_frame_free(&ist->decoded_frame);
503         av_frame_free(&ist->filter_frame);
504         av_dict_free(&ist->decoder_opts);
505         avsubtitle_free(&ist->prev_sub.subtitle);
506         av_frame_free(&ist->sub2video.frame);
507         av_freep(&ist->filters);
508         av_freep(&ist->hwaccel_device);
509
510         av_freep(&input_streams[i]);
511     }
512
513     if (vstats_file)
514         fclose(vstats_file);
515     av_free(vstats_filename);
516
517     av_freep(&input_streams);
518     av_freep(&input_files);
519     av_freep(&output_streams);
520     av_freep(&output_files);
521
522     uninit_opts();
523
524     avformat_network_deinit();
525
526     if (received_sigterm) {
527         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
528                (int) received_sigterm);
529     } else if (ret && transcode_init_done) {
530         av_log(NULL, AV_LOG_INFO, "Conversion failed!\n");
531     }
532     term_exit();
533 }
534
535 void assert_avoptions(AVDictionary *m)
536 {
537     AVDictionaryEntry *t;
538     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
539         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
540         exit_program(1);
541     }
542 }
543
544 static void abort_codec_experimental(AVCodec *c, int encoder)
545 {
546     exit_program(1);
547 }
548
549 static void update_benchmark(const char *fmt, ...)
550 {
551     if (do_benchmark_all) {
552         int64_t t = getutime();
553         va_list va;
554         char buf[1024];
555
556         if (fmt) {
557             va_start(va, fmt);
558             vsnprintf(buf, sizeof(buf), fmt, va);
559             va_end(va);
560             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
561         }
562         current_time = t;
563     }
564 }
565
566 static void close_all_output_streams(OutputStream *ost, OSTFinished this_stream, OSTFinished others)
567 {
568     int i;
569     for (i = 0; i < nb_output_streams; i++) {
570         OutputStream *ost2 = output_streams[i];
571         ost2->finished |= ost == ost2 ? this_stream : others;
572     }
573 }
574
575 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
576 {
577     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
578     AVCodecContext          *avctx = ost->st->codec;
579     int ret;
580
581     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
582         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
583         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
584
585     /*
586      * Audio encoders may split the packets --  #frames in != #packets out.
587      * But there is no reordering, so we can limit the number of output packets
588      * by simply dropping them here.
589      * Counting encoded video frames needs to be done separately because of
590      * reordering, see do_video_out()
591      */
592     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
593         if (ost->frame_number >= ost->max_frames) {
594             av_free_packet(pkt);
595             return;
596         }
597         ost->frame_number++;
598     }
599
600     while (bsfc) {
601         AVPacket new_pkt = *pkt;
602         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
603                                            &new_pkt.data, &new_pkt.size,
604                                            pkt->data, pkt->size,
605                                            pkt->flags & AV_PKT_FLAG_KEY);
606         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
607             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
608             if(t) {
609                 memcpy(t, new_pkt.data, new_pkt.size);
610                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
611                 new_pkt.data = t;
612                 new_pkt.buf = NULL;
613                 a = 1;
614             } else
615                 a = AVERROR(ENOMEM);
616         }
617         if (a > 0) {
618             av_free_packet(pkt);
619             new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
620                                            av_buffer_default_free, NULL, 0);
621             if (!new_pkt.buf)
622                 exit_program(1);
623         } else if (a < 0) {
624             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
625                    bsfc->filter->name, pkt->stream_index,
626                    avctx->codec ? avctx->codec->name : "copy");
627             print_error("", a);
628             if (exit_on_error)
629                 exit_program(1);
630         }
631         *pkt = new_pkt;
632
633         bsfc = bsfc->next;
634     }
635
636     if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS) &&
637         (avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) &&
638         pkt->dts != AV_NOPTS_VALUE &&
639         ost->last_mux_dts != AV_NOPTS_VALUE) {
640       int64_t max = ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
641       if (pkt->dts < max) {
642         int loglevel = max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG;
643         av_log(s, loglevel, "Non-monotonous DTS in output stream "
644                "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
645                ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
646         if (exit_on_error) {
647             av_log(NULL, AV_LOG_FATAL, "aborting.\n");
648             exit_program(1);
649         }
650         av_log(s, loglevel, "changing to %"PRId64". This may result "
651                "in incorrect timestamps in the output file.\n",
652                max);
653         if(pkt->pts >= pkt->dts)
654             pkt->pts = FFMAX(pkt->pts, max);
655         pkt->dts = max;
656       }
657     }
658     ost->last_mux_dts = pkt->dts;
659
660     ost->data_size += pkt->size;
661     ost->packets_written++;
662
663     pkt->stream_index = ost->index;
664
665     if (debug_ts) {
666         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
667                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
668                 av_get_media_type_string(ost->st->codec->codec_type),
669                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
670                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
671                 pkt->size
672               );
673     }
674
675     ret = av_interleaved_write_frame(s, pkt);
676     if (ret < 0) {
677         print_error("av_interleaved_write_frame()", ret);
678         main_return_code = 1;
679         close_all_output_streams(ost, MUXER_FINISHED | ENCODER_FINISHED, ENCODER_FINISHED);
680     }
681     av_free_packet(pkt);
682 }
683
684 static void close_output_stream(OutputStream *ost)
685 {
686     OutputFile *of = output_files[ost->file_index];
687
688     ost->finished |= ENCODER_FINISHED;
689     if (of->shortest) {
690         int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, AV_TIME_BASE_Q);
691         of->recording_time = FFMIN(of->recording_time, end);
692     }
693 }
694
695 static int check_recording_time(OutputStream *ost)
696 {
697     OutputFile *of = output_files[ost->file_index];
698
699     if (of->recording_time != INT64_MAX &&
700         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
701                       AV_TIME_BASE_Q) >= 0) {
702         close_output_stream(ost);
703         return 0;
704     }
705     return 1;
706 }
707
708 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
709                          AVFrame *frame)
710 {
711     AVCodecContext *enc = ost->st->codec;
712     AVPacket pkt;
713     int got_packet = 0;
714
715     av_init_packet(&pkt);
716     pkt.data = NULL;
717     pkt.size = 0;
718
719     if (!check_recording_time(ost))
720         return;
721
722     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
723         frame->pts = ost->sync_opts;
724     ost->sync_opts = frame->pts + frame->nb_samples;
725     ost->samples_encoded += frame->nb_samples;
726     ost->frames_encoded++;
727
728     av_assert0(pkt.size || !pkt.data);
729     update_benchmark(NULL);
730     if (debug_ts) {
731         av_log(NULL, AV_LOG_INFO, "encoder <- type:audio "
732                "frame_pts:%s frame_pts_time:%s time_base:%d/%d\n",
733                av_ts2str(frame->pts), av_ts2timestr(frame->pts, &enc->time_base),
734                enc->time_base.num, enc->time_base.den);
735     }
736
737     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
738         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
739         exit_program(1);
740     }
741     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
742
743     if (got_packet) {
744         if (pkt.pts != AV_NOPTS_VALUE)
745             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
746         if (pkt.dts != AV_NOPTS_VALUE)
747             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
748         if (pkt.duration > 0)
749             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
750
751         if (debug_ts) {
752             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
753                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
754                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
755                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
756         }
757
758         write_frame(s, &pkt, ost);
759     }
760 }
761
762 static void do_subtitle_out(AVFormatContext *s,
763                             OutputStream *ost,
764                             InputStream *ist,
765                             AVSubtitle *sub)
766 {
767     int subtitle_out_max_size = 1024 * 1024;
768     int subtitle_out_size, nb, i;
769     AVCodecContext *enc;
770     AVPacket pkt;
771     int64_t pts;
772
773     if (sub->pts == AV_NOPTS_VALUE) {
774         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
775         if (exit_on_error)
776             exit_program(1);
777         return;
778     }
779
780     enc = ost->st->codec;
781
782     if (!subtitle_out) {
783         subtitle_out = av_malloc(subtitle_out_max_size);
784     }
785
786     /* Note: DVB subtitle need one packet to draw them and one other
787        packet to clear them */
788     /* XXX: signal it in the codec context ? */
789     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
790         nb = 2;
791     else
792         nb = 1;
793
794     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
795     pts = sub->pts;
796     if (output_files[ost->file_index]->start_time != AV_NOPTS_VALUE)
797         pts -= output_files[ost->file_index]->start_time;
798     for (i = 0; i < nb; i++) {
799         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
800         if (!check_recording_time(ost))
801             return;
802
803         sub->pts = pts;
804         // start_display_time is required to be 0
805         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
806         sub->end_display_time  -= sub->start_display_time;
807         sub->start_display_time = 0;
808         if (i == 1)
809             sub->num_rects = 0;
810
811         ost->frames_encoded++;
812
813         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
814                                                     subtitle_out_max_size, sub);
815         if (subtitle_out_size < 0) {
816             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
817             exit_program(1);
818         }
819
820         av_init_packet(&pkt);
821         pkt.data = subtitle_out;
822         pkt.size = subtitle_out_size;
823         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
824         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
825         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
826             /* XXX: the pts correction is handled here. Maybe handling
827                it in the codec would be better */
828             if (i == 0)
829                 pkt.pts += 90 * sub->start_display_time;
830             else
831                 pkt.pts += 90 * sub->end_display_time;
832         }
833         write_frame(s, &pkt, ost);
834     }
835 }
836
837 static void do_video_out(AVFormatContext *s,
838                          OutputStream *ost,
839                          AVFrame *in_picture)
840 {
841     int ret, format_video_sync;
842     AVPacket pkt;
843     AVCodecContext *enc = ost->st->codec;
844     int nb_frames, i;
845     double sync_ipts, delta;
846     double duration = 0;
847     int frame_size = 0;
848     InputStream *ist = NULL;
849
850     if (ost->source_index >= 0)
851         ist = input_streams[ost->source_index];
852
853     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
854         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
855
856     sync_ipts = in_picture->pts;
857     delta = sync_ipts - ost->sync_opts + duration;
858
859     /* by default, we output a single frame */
860     nb_frames = 1;
861
862     format_video_sync = video_sync_method;
863     if (format_video_sync == VSYNC_AUTO) {
864         if(!strcmp(s->oformat->name, "avi")) {
865             format_video_sync = VSYNC_VFR;
866         } else
867             format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
868         if (   ist
869             && format_video_sync == VSYNC_CFR
870             && input_files[ist->file_index]->ctx->nb_streams == 1
871             && input_files[ist->file_index]->input_ts_offset == 0) {
872             format_video_sync = VSYNC_VSCFR;
873         }
874         if (format_video_sync == VSYNC_CFR && copy_ts) {
875             format_video_sync = VSYNC_VSCFR;
876         }
877     }
878
879     switch (format_video_sync) {
880     case VSYNC_VSCFR:
881         if (ost->frame_number == 0 && delta - duration >= 0.5) {
882             av_log(NULL, AV_LOG_DEBUG, "Not duplicating %d initial frames\n", (int)lrintf(delta - duration));
883             delta = duration;
884             ost->sync_opts = lrint(sync_ipts);
885         }
886     case VSYNC_CFR:
887         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
888         if (delta < -1.1)
889             nb_frames = 0;
890         else if (delta > 1.1)
891             nb_frames = lrintf(delta);
892         break;
893     case VSYNC_VFR:
894         if (delta <= -0.6)
895             nb_frames = 0;
896         else if (delta > 0.6)
897             ost->sync_opts = lrint(sync_ipts);
898         break;
899     case VSYNC_DROP:
900     case VSYNC_PASSTHROUGH:
901         ost->sync_opts = lrint(sync_ipts);
902         break;
903     default:
904         av_assert0(0);
905     }
906
907     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
908     if (nb_frames == 0) {
909         nb_frames_drop++;
910         av_log(NULL, AV_LOG_VERBOSE,
911                "*** dropping frame %d from stream %d at ts %"PRId64"\n",
912                ost->frame_number, ost->st->index, in_picture->pts);
913         return;
914     } else if (nb_frames > 1) {
915         if (nb_frames > dts_error_threshold * 30) {
916             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
917             nb_frames_drop++;
918             return;
919         }
920         nb_frames_dup += nb_frames - 1;
921         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
922     }
923
924   /* duplicates frame if needed */
925   for (i = 0; i < nb_frames; i++) {
926     av_init_packet(&pkt);
927     pkt.data = NULL;
928     pkt.size = 0;
929
930     in_picture->pts = ost->sync_opts;
931
932 #if 1
933     if (!check_recording_time(ost))
934 #else
935     if (ost->frame_number >= ost->max_frames)
936 #endif
937         return;
938
939     if (s->oformat->flags & AVFMT_RAWPICTURE &&
940         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
941         /* raw pictures are written as AVPicture structure to
942            avoid any copies. We support temporarily the older
943            method. */
944         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
945         enc->coded_frame->top_field_first  = in_picture->top_field_first;
946         if (enc->coded_frame->interlaced_frame)
947             enc->field_order = enc->coded_frame->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
948         else
949             enc->field_order = AV_FIELD_PROGRESSIVE;
950         pkt.data   = (uint8_t *)in_picture;
951         pkt.size   =  sizeof(AVPicture);
952         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
953         pkt.flags |= AV_PKT_FLAG_KEY;
954
955         write_frame(s, &pkt, ost);
956     } else {
957         int got_packet, forced_keyframe = 0;
958         double pts_time;
959
960         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME) &&
961             ost->top_field_first >= 0)
962             in_picture->top_field_first = !!ost->top_field_first;
963
964         if (in_picture->interlaced_frame) {
965             if (enc->codec->id == AV_CODEC_ID_MJPEG)
966                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
967             else
968                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
969         } else
970             enc->field_order = AV_FIELD_PROGRESSIVE;
971
972         in_picture->quality = ost->st->codec->global_quality;
973         if (!enc->me_threshold)
974             in_picture->pict_type = 0;
975
976         pts_time = in_picture->pts != AV_NOPTS_VALUE ?
977             in_picture->pts * av_q2d(enc->time_base) : NAN;
978         if (ost->forced_kf_index < ost->forced_kf_count &&
979             in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
980             ost->forced_kf_index++;
981             forced_keyframe = 1;
982         } else if (ost->forced_keyframes_pexpr) {
983             double res;
984             ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
985             res = av_expr_eval(ost->forced_keyframes_pexpr,
986                                ost->forced_keyframes_expr_const_values, NULL);
987             av_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
988                     ost->forced_keyframes_expr_const_values[FKF_N],
989                     ost->forced_keyframes_expr_const_values[FKF_N_FORCED],
990                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N],
991                     ost->forced_keyframes_expr_const_values[FKF_T],
992                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T],
993                     res);
994             if (res) {
995                 forced_keyframe = 1;
996                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] =
997                     ost->forced_keyframes_expr_const_values[FKF_N];
998                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] =
999                     ost->forced_keyframes_expr_const_values[FKF_T];
1000                 ost->forced_keyframes_expr_const_values[FKF_N_FORCED] += 1;
1001             }
1002
1003             ost->forced_keyframes_expr_const_values[FKF_N] += 1;
1004         }
1005
1006         if (forced_keyframe) {
1007             in_picture->pict_type = AV_PICTURE_TYPE_I;
1008             av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
1009         }
1010
1011         update_benchmark(NULL);
1012         if (debug_ts) {
1013             av_log(NULL, AV_LOG_INFO, "encoder <- type:video "
1014                    "frame_pts:%s frame_pts_time:%s time_base:%d/%d\n",
1015                    av_ts2str(in_picture->pts), av_ts2timestr(in_picture->pts, &enc->time_base),
1016                    enc->time_base.num, enc->time_base.den);
1017         }
1018
1019         ost->frames_encoded++;
1020
1021         ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
1022         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
1023         if (ret < 0) {
1024             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1025             exit_program(1);
1026         }
1027
1028         if (got_packet) {
1029             if (debug_ts) {
1030                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1031                        "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1032                        av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &enc->time_base),
1033                        av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &enc->time_base));
1034             }
1035
1036             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
1037                 pkt.pts = ost->sync_opts;
1038
1039             if (pkt.pts != AV_NOPTS_VALUE)
1040                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1041             if (pkt.dts != AV_NOPTS_VALUE)
1042                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1043
1044             if (debug_ts) {
1045                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1046                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1047                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1048                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1049             }
1050
1051             frame_size = pkt.size;
1052             write_frame(s, &pkt, ost);
1053
1054             /* if two pass, output log */
1055             if (ost->logfile && enc->stats_out) {
1056                 fprintf(ost->logfile, "%s", enc->stats_out);
1057             }
1058         }
1059     }
1060     ost->sync_opts++;
1061     /*
1062      * For video, number of frames in == number of packets out.
1063      * But there may be reordering, so we can't throw away frames on encoder
1064      * flush, we need to limit them here, before they go into encoder.
1065      */
1066     ost->frame_number++;
1067
1068     if (vstats_filename && frame_size)
1069         do_video_stats(ost, frame_size);
1070   }
1071 }
1072
1073 static double psnr(double d)
1074 {
1075     return -10.0 * log(d) / log(10.0);
1076 }
1077
1078 static void do_video_stats(OutputStream *ost, int frame_size)
1079 {
1080     AVCodecContext *enc;
1081     int frame_number;
1082     double ti1, bitrate, avg_bitrate;
1083
1084     /* this is executed just the first time do_video_stats is called */
1085     if (!vstats_file) {
1086         vstats_file = fopen(vstats_filename, "w");
1087         if (!vstats_file) {
1088             perror("fopen");
1089             exit_program(1);
1090         }
1091     }
1092
1093     enc = ost->st->codec;
1094     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1095         frame_number = ost->st->nb_frames;
1096         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1097         if (enc->flags&CODEC_FLAG_PSNR)
1098             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1099
1100         fprintf(vstats_file,"f_size= %6d ", frame_size);
1101         /* compute pts value */
1102         ti1 = ost->st->pts.val * av_q2d(enc->time_base);
1103         if (ti1 < 0.01)
1104             ti1 = 0.01;
1105
1106         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1107         avg_bitrate = (double)(ost->data_size * 8) / ti1 / 1000.0;
1108         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1109                (double)ost->data_size / 1024, ti1, bitrate, avg_bitrate);
1110         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1111     }
1112 }
1113
1114 /**
1115  * Get and encode new output from any of the filtergraphs, without causing
1116  * activity.
1117  *
1118  * @return  0 for success, <0 for severe errors
1119  */
1120 static int reap_filters(void)
1121 {
1122     AVFrame *filtered_frame = NULL;
1123     int i;
1124     int64_t frame_pts;
1125
1126     /* Reap all buffers present in the buffer sinks */
1127     for (i = 0; i < nb_output_streams; i++) {
1128         OutputStream *ost = output_streams[i];
1129         OutputFile    *of = output_files[ost->file_index];
1130         AVFilterContext *filter;
1131         AVCodecContext *enc = ost->st->codec;
1132         int ret = 0;
1133
1134         if (!ost->filter)
1135             continue;
1136         filter = ost->filter->filter;
1137
1138         if (!ost->filtered_frame && !(ost->filtered_frame = av_frame_alloc())) {
1139             return AVERROR(ENOMEM);
1140         }
1141         filtered_frame = ost->filtered_frame;
1142
1143         while (1) {
1144             ret = av_buffersink_get_frame_flags(filter, filtered_frame,
1145                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1146             if (ret < 0) {
1147                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1148                     av_log(NULL, AV_LOG_WARNING,
1149                            "Error in av_buffersink_get_frame_flags(): %s\n", av_err2str(ret));
1150                 }
1151                 break;
1152             }
1153             if (ost->finished) {
1154                 av_frame_unref(filtered_frame);
1155                 continue;
1156             }
1157             frame_pts = AV_NOPTS_VALUE;
1158             if (filtered_frame->pts != AV_NOPTS_VALUE) {
1159                 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1160                 filtered_frame->pts = frame_pts =
1161                     av_rescale_q(filtered_frame->pts, filter->inputs[0]->time_base, enc->time_base) -
1162                     av_rescale_q(start_time, AV_TIME_BASE_Q, enc->time_base);
1163             }
1164             //if (ost->source_index >= 0)
1165             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1166
1167             switch (filter->inputs[0]->type) {
1168             case AVMEDIA_TYPE_VIDEO:
1169                 filtered_frame->pts = frame_pts;
1170                 if (!ost->frame_aspect_ratio.num)
1171                     enc->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
1172
1173                 if (debug_ts) {
1174                     av_log(NULL, AV_LOG_INFO, "filter -> pts:%s pts_time:%s time_base:%d/%d\n",
1175                             av_ts2str(filtered_frame->pts), av_ts2timestr(filtered_frame->pts, &enc->time_base),
1176                             enc->time_base.num, enc->time_base.den);
1177                 }
1178
1179                 do_video_out(of->ctx, ost, filtered_frame);
1180                 break;
1181             case AVMEDIA_TYPE_AUDIO:
1182                 filtered_frame->pts = frame_pts;
1183                 if (!(enc->codec->capabilities & CODEC_CAP_PARAM_CHANGE) &&
1184                     enc->channels != av_frame_get_channels(filtered_frame)) {
1185                     av_log(NULL, AV_LOG_ERROR,
1186                            "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
1187                     break;
1188                 }
1189                 do_audio_out(of->ctx, ost, filtered_frame);
1190                 break;
1191             default:
1192                 // TODO support subtitle filters
1193                 av_assert0(0);
1194             }
1195
1196             av_frame_unref(filtered_frame);
1197         }
1198     }
1199
1200     return 0;
1201 }
1202
1203 static void print_final_stats(int64_t total_size)
1204 {
1205     uint64_t video_size = 0, audio_size = 0, extra_size = 0, other_size = 0;
1206     uint64_t subtitle_size = 0;
1207     uint64_t data_size = 0;
1208     float percent = -1.0;
1209     int i, j;
1210
1211     for (i = 0; i < nb_output_streams; i++) {
1212         OutputStream *ost = output_streams[i];
1213         switch (ost->st->codec->codec_type) {
1214             case AVMEDIA_TYPE_VIDEO: video_size += ost->data_size; break;
1215             case AVMEDIA_TYPE_AUDIO: audio_size += ost->data_size; break;
1216             case AVMEDIA_TYPE_SUBTITLE: subtitle_size += ost->data_size; break;
1217             default:                 other_size += ost->data_size; break;
1218         }
1219         extra_size += ost->st->codec->extradata_size;
1220         data_size  += ost->data_size;
1221     }
1222
1223     if (data_size && total_size >= data_size)
1224         percent = 100.0 * (total_size - data_size) / data_size;
1225
1226     av_log(NULL, AV_LOG_INFO, "\n");
1227     av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0fkB other streams:%1.0fkB global headers:%1.0fkB muxing overhead: ",
1228            video_size / 1024.0,
1229            audio_size / 1024.0,
1230            subtitle_size / 1024.0,
1231            other_size / 1024.0,
1232            extra_size / 1024.0);
1233     if (percent >= 0.0)
1234         av_log(NULL, AV_LOG_INFO, "%f%%", percent);
1235     else
1236         av_log(NULL, AV_LOG_INFO, "unknown");
1237     av_log(NULL, AV_LOG_INFO, "\n");
1238
1239     /* print verbose per-stream stats */
1240     for (i = 0; i < nb_input_files; i++) {
1241         InputFile *f = input_files[i];
1242         uint64_t total_packets = 0, total_size = 0;
1243
1244         av_log(NULL, AV_LOG_VERBOSE, "Input file #%d (%s):\n",
1245                i, f->ctx->filename);
1246
1247         for (j = 0; j < f->nb_streams; j++) {
1248             InputStream *ist = input_streams[f->ist_index + j];
1249             enum AVMediaType type = ist->st->codec->codec_type;
1250
1251             total_size    += ist->data_size;
1252             total_packets += ist->nb_packets;
1253
1254             av_log(NULL, AV_LOG_VERBOSE, "  Input stream #%d:%d (%s): ",
1255                    i, j, media_type_string(type));
1256             av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets read (%"PRIu64" bytes); ",
1257                    ist->nb_packets, ist->data_size);
1258
1259             if (ist->decoding_needed) {
1260                 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames decoded",
1261                        ist->frames_decoded);
1262                 if (type == AVMEDIA_TYPE_AUDIO)
1263                     av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ist->samples_decoded);
1264                 av_log(NULL, AV_LOG_VERBOSE, "; ");
1265             }
1266
1267             av_log(NULL, AV_LOG_VERBOSE, "\n");
1268         }
1269
1270         av_log(NULL, AV_LOG_VERBOSE, "  Total: %"PRIu64" packets (%"PRIu64" bytes) demuxed\n",
1271                total_packets, total_size);
1272     }
1273
1274     for (i = 0; i < nb_output_files; i++) {
1275         OutputFile *of = output_files[i];
1276         uint64_t total_packets = 0, total_size = 0;
1277
1278         av_log(NULL, AV_LOG_VERBOSE, "Output file #%d (%s):\n",
1279                i, of->ctx->filename);
1280
1281         for (j = 0; j < of->ctx->nb_streams; j++) {
1282             OutputStream *ost = output_streams[of->ost_index + j];
1283             enum AVMediaType type = ost->st->codec->codec_type;
1284
1285             total_size    += ost->data_size;
1286             total_packets += ost->packets_written;
1287
1288             av_log(NULL, AV_LOG_VERBOSE, "  Output stream #%d:%d (%s): ",
1289                    i, j, media_type_string(type));
1290             if (ost->encoding_needed) {
1291                 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames encoded",
1292                        ost->frames_encoded);
1293                 if (type == AVMEDIA_TYPE_AUDIO)
1294                     av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ost->samples_encoded);
1295                 av_log(NULL, AV_LOG_VERBOSE, "; ");
1296             }
1297
1298             av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets muxed (%"PRIu64" bytes); ",
1299                    ost->packets_written, ost->data_size);
1300
1301             av_log(NULL, AV_LOG_VERBOSE, "\n");
1302         }
1303
1304         av_log(NULL, AV_LOG_VERBOSE, "  Total: %"PRIu64" packets (%"PRIu64" bytes) muxed\n",
1305                total_packets, total_size);
1306     }
1307     if(video_size + data_size + audio_size + subtitle_size + extra_size == 0){
1308         av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1309     }
1310 }
1311
1312 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1313 {
1314     char buf[1024];
1315     AVBPrint buf_script;
1316     OutputStream *ost;
1317     AVFormatContext *oc;
1318     int64_t total_size;
1319     AVCodecContext *enc;
1320     int frame_number, vid, i;
1321     double bitrate;
1322     int64_t pts = INT64_MIN;
1323     static int64_t last_time = -1;
1324     static int qp_histogram[52];
1325     int hours, mins, secs, us;
1326
1327     if (!print_stats && !is_last_report && !progress_avio)
1328         return;
1329
1330     if (!is_last_report) {
1331         if (last_time == -1) {
1332             last_time = cur_time;
1333             return;
1334         }
1335         if ((cur_time - last_time) < 500000)
1336             return;
1337         last_time = cur_time;
1338     }
1339
1340
1341     oc = output_files[0]->ctx;
1342
1343     total_size = avio_size(oc->pb);
1344     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1345         total_size = avio_tell(oc->pb);
1346
1347     buf[0] = '\0';
1348     vid = 0;
1349     av_bprint_init(&buf_script, 0, 1);
1350     for (i = 0; i < nb_output_streams; i++) {
1351         float q = -1;
1352         ost = output_streams[i];
1353         enc = ost->st->codec;
1354         if (!ost->stream_copy && enc->coded_frame)
1355             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1356         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1357             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1358             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1359                        ost->file_index, ost->index, q);
1360         }
1361         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1362             float fps, t = (cur_time-timer_start) / 1000000.0;
1363
1364             frame_number = ost->frame_number;
1365             fps = t > 1 ? frame_number / t : 0;
1366             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1367                      frame_number, fps < 9.95, fps, q);
1368             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1369             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1370             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1371                        ost->file_index, ost->index, q);
1372             if (is_last_report)
1373                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1374             if (qp_hist) {
1375                 int j;
1376                 int qp = lrintf(q);
1377                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1378                     qp_histogram[qp]++;
1379                 for (j = 0; j < 32; j++)
1380                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1381             }
1382             if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1383                 int j;
1384                 double error, error_sum = 0;
1385                 double scale, scale_sum = 0;
1386                 double p;
1387                 char type[3] = { 'Y','U','V' };
1388                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1389                 for (j = 0; j < 3; j++) {
1390                     if (is_last_report) {
1391                         error = enc->error[j];
1392                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1393                     } else {
1394                         error = enc->coded_frame->error[j];
1395                         scale = enc->width * enc->height * 255.0 * 255.0;
1396                     }
1397                     if (j)
1398                         scale /= 4;
1399                     error_sum += error;
1400                     scale_sum += scale;
1401                     p = psnr(error / scale);
1402                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1403                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1404                                ost->file_index, ost->index, type[j] | 32, p);
1405                 }
1406                 p = psnr(error_sum / scale_sum);
1407                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1408                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1409                            ost->file_index, ost->index, p);
1410             }
1411             vid = 1;
1412         }
1413         /* compute min output value */
1414         if (ost->st->pts.val != AV_NOPTS_VALUE)
1415             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1416                                           ost->st->time_base, AV_TIME_BASE_Q));
1417     }
1418
1419     secs = pts / AV_TIME_BASE;
1420     us = pts % AV_TIME_BASE;
1421     mins = secs / 60;
1422     secs %= 60;
1423     hours = mins / 60;
1424     mins %= 60;
1425
1426     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1427
1428     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1429                                  "size=N/A time=");
1430     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1431                                  "size=%8.0fkB time=", total_size / 1024.0);
1432     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1433              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1434              (100 * us) / AV_TIME_BASE);
1435     if (bitrate < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1436                               "bitrate=N/A");
1437     else             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1438                               "bitrate=%6.1fkbits/s", bitrate);
1439     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
1440     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1441     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1442     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1443                hours, mins, secs, us);
1444
1445     if (nb_frames_dup || nb_frames_drop)
1446         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1447                 nb_frames_dup, nb_frames_drop);
1448     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1449     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1450
1451     if (print_stats || is_last_report) {
1452         if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
1453             fprintf(stderr, "%s    \r", buf);
1454         } else
1455             av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1456
1457     fflush(stderr);
1458     }
1459
1460     if (progress_avio) {
1461         av_bprintf(&buf_script, "progress=%s\n",
1462                    is_last_report ? "end" : "continue");
1463         avio_write(progress_avio, buf_script.str,
1464                    FFMIN(buf_script.len, buf_script.size - 1));
1465         avio_flush(progress_avio);
1466         av_bprint_finalize(&buf_script, NULL);
1467         if (is_last_report) {
1468             avio_close(progress_avio);
1469             progress_avio = NULL;
1470         }
1471     }
1472
1473     if (is_last_report)
1474         print_final_stats(total_size);
1475 }
1476
1477 static void flush_encoders(void)
1478 {
1479     int i, ret;
1480
1481     for (i = 0; i < nb_output_streams; i++) {
1482         OutputStream   *ost = output_streams[i];
1483         AVCodecContext *enc = ost->st->codec;
1484         AVFormatContext *os = output_files[ost->file_index]->ctx;
1485         int stop_encoding = 0;
1486
1487         if (!ost->encoding_needed)
1488             continue;
1489
1490         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1491             continue;
1492         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1493             continue;
1494
1495         for (;;) {
1496             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1497             const char *desc;
1498
1499             switch (ost->st->codec->codec_type) {
1500             case AVMEDIA_TYPE_AUDIO:
1501                 encode = avcodec_encode_audio2;
1502                 desc   = "Audio";
1503                 break;
1504             case AVMEDIA_TYPE_VIDEO:
1505                 encode = avcodec_encode_video2;
1506                 desc   = "Video";
1507                 break;
1508             default:
1509                 stop_encoding = 1;
1510             }
1511
1512             if (encode) {
1513                 AVPacket pkt;
1514                 int pkt_size;
1515                 int got_packet;
1516                 av_init_packet(&pkt);
1517                 pkt.data = NULL;
1518                 pkt.size = 0;
1519
1520                 update_benchmark(NULL);
1521                 ret = encode(enc, &pkt, NULL, &got_packet);
1522                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1523                 if (ret < 0) {
1524                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1525                     exit_program(1);
1526                 }
1527                 if (ost->logfile && enc->stats_out) {
1528                     fprintf(ost->logfile, "%s", enc->stats_out);
1529                 }
1530                 if (!got_packet) {
1531                     stop_encoding = 1;
1532                     break;
1533                 }
1534                 if (ost->finished & MUXER_FINISHED) {
1535                     av_free_packet(&pkt);
1536                     continue;
1537                 }
1538                 if (pkt.pts != AV_NOPTS_VALUE)
1539                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1540                 if (pkt.dts != AV_NOPTS_VALUE)
1541                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1542                 if (pkt.duration > 0)
1543                     pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1544                 pkt_size = pkt.size;
1545                 write_frame(os, &pkt, ost);
1546                 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
1547                     do_video_stats(ost, pkt_size);
1548                 }
1549             }
1550
1551             if (stop_encoding)
1552                 break;
1553         }
1554     }
1555 }
1556
1557 /*
1558  * Check whether a packet from ist should be written into ost at this time
1559  */
1560 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1561 {
1562     OutputFile *of = output_files[ost->file_index];
1563     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1564
1565     if (ost->source_index != ist_index)
1566         return 0;
1567
1568     if (ost->finished)
1569         return 0;
1570
1571     if (of->start_time != AV_NOPTS_VALUE && ist->pts < of->start_time)
1572         return 0;
1573
1574     return 1;
1575 }
1576
1577 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1578 {
1579     OutputFile *of = output_files[ost->file_index];
1580     InputFile   *f = input_files [ist->file_index];
1581     int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1582     int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1583     int64_t ist_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ist->st->time_base);
1584     AVPicture pict;
1585     AVPacket opkt;
1586
1587     av_init_packet(&opkt);
1588
1589     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1590         !ost->copy_initial_nonkeyframes)
1591         return;
1592
1593     if (pkt->pts == AV_NOPTS_VALUE) {
1594         if (!ost->frame_number && ist->pts < start_time &&
1595             !ost->copy_prior_start)
1596             return;
1597     } else {
1598         if (!ost->frame_number && pkt->pts < ist_tb_start_time &&
1599             !ost->copy_prior_start)
1600             return;
1601     }
1602
1603     if (of->recording_time != INT64_MAX &&
1604         ist->pts >= of->recording_time + start_time) {
1605         close_output_stream(ost);
1606         return;
1607     }
1608
1609     if (f->recording_time != INT64_MAX) {
1610         start_time = f->ctx->start_time;
1611         if (f->start_time != AV_NOPTS_VALUE)
1612             start_time += f->start_time;
1613         if (ist->pts >= f->recording_time + start_time) {
1614             close_output_stream(ost);
1615             return;
1616         }
1617     }
1618
1619     /* force the input stream PTS */
1620     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
1621         ost->sync_opts++;
1622
1623     if (pkt->pts != AV_NOPTS_VALUE)
1624         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1625     else
1626         opkt.pts = AV_NOPTS_VALUE;
1627
1628     if (pkt->dts == AV_NOPTS_VALUE)
1629         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1630     else
1631         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1632     opkt.dts -= ost_tb_start_time;
1633
1634     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1635         int duration = av_get_audio_frame_duration(ist->st->codec, pkt->size);
1636         if(!duration)
1637             duration = ist->st->codec->frame_size;
1638         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1639                                                (AVRational){1, ist->st->codec->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
1640                                                ost->st->time_base) - ost_tb_start_time;
1641     }
1642
1643     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1644     opkt.flags    = pkt->flags;
1645
1646     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1647     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1648        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1649        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1650        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1651        ) {
1652         if (av_parser_change(ost->parser, ost->st->codec,
1653                              &opkt.data, &opkt.size,
1654                              pkt->data, pkt->size,
1655                              pkt->flags & AV_PKT_FLAG_KEY)) {
1656             opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1657             if (!opkt.buf)
1658                 exit_program(1);
1659         }
1660     } else {
1661         opkt.data = pkt->data;
1662         opkt.size = pkt->size;
1663     }
1664     av_copy_packet_side_data(&opkt, pkt);
1665
1666     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1667         /* store AVPicture in AVPacket, as expected by the output format */
1668         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1669         opkt.data = (uint8_t *)&pict;
1670         opkt.size = sizeof(AVPicture);
1671         opkt.flags |= AV_PKT_FLAG_KEY;
1672     }
1673
1674     write_frame(of->ctx, &opkt, ost);
1675     ost->st->codec->frame_number++;
1676 }
1677
1678 int guess_input_channel_layout(InputStream *ist)
1679 {
1680     AVCodecContext *dec = ist->st->codec;
1681
1682     if (!dec->channel_layout) {
1683         char layout_name[256];
1684
1685         if (dec->channels > ist->guess_layout_max)
1686             return 0;
1687         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1688         if (!dec->channel_layout)
1689             return 0;
1690         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1691                                      dec->channels, dec->channel_layout);
1692         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1693                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1694     }
1695     return 1;
1696 }
1697
1698 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1699 {
1700     AVFrame *decoded_frame, *f;
1701     AVCodecContext *avctx = ist->st->codec;
1702     int i, ret, err = 0, resample_changed;
1703     AVRational decoded_frame_tb;
1704
1705     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1706         return AVERROR(ENOMEM);
1707     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1708         return AVERROR(ENOMEM);
1709     decoded_frame = ist->decoded_frame;
1710
1711     update_benchmark(NULL);
1712     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1713     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1714
1715     if (ret >= 0 && avctx->sample_rate <= 0) {
1716         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1717         ret = AVERROR_INVALIDDATA;
1718     }
1719
1720     if (*got_output || ret<0 || pkt->size)
1721         decode_error_stat[ret<0] ++;
1722
1723     if (!*got_output || ret < 0) {
1724         if (!pkt->size) {
1725             for (i = 0; i < ist->nb_filters; i++)
1726 #if 1
1727                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1728 #else
1729                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1730 #endif
1731         }
1732         return ret;
1733     }
1734
1735     ist->samples_decoded += decoded_frame->nb_samples;
1736     ist->frames_decoded++;
1737
1738 #if 1
1739     /* increment next_dts to use for the case where the input stream does not
1740        have timestamps or there are multiple frames in the packet */
1741     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1742                      avctx->sample_rate;
1743     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1744                      avctx->sample_rate;
1745 #endif
1746
1747     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1748                        ist->resample_channels       != avctx->channels               ||
1749                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1750                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1751     if (resample_changed) {
1752         char layout1[64], layout2[64];
1753
1754         if (!guess_input_channel_layout(ist)) {
1755             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1756                    "layout for Input Stream #%d.%d\n", ist->file_index,
1757                    ist->st->index);
1758             exit_program(1);
1759         }
1760         decoded_frame->channel_layout = avctx->channel_layout;
1761
1762         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1763                                      ist->resample_channel_layout);
1764         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1765                                      decoded_frame->channel_layout);
1766
1767         av_log(NULL, AV_LOG_INFO,
1768                "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",
1769                ist->file_index, ist->st->index,
1770                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1771                ist->resample_channels, layout1,
1772                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1773                avctx->channels, layout2);
1774
1775         ist->resample_sample_fmt     = decoded_frame->format;
1776         ist->resample_sample_rate    = decoded_frame->sample_rate;
1777         ist->resample_channel_layout = decoded_frame->channel_layout;
1778         ist->resample_channels       = avctx->channels;
1779
1780         for (i = 0; i < nb_filtergraphs; i++)
1781             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1782                 FilterGraph *fg = filtergraphs[i];
1783                 int j;
1784                 if (configure_filtergraph(fg) < 0) {
1785                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1786                     exit_program(1);
1787                 }
1788                 for (j = 0; j < fg->nb_outputs; j++) {
1789                     OutputStream *ost = fg->outputs[j]->ost;
1790                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1791                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1792                         av_buffersink_set_frame_size(ost->filter->filter,
1793                                                      ost->st->codec->frame_size);
1794                 }
1795             }
1796     }
1797
1798     /* if the decoder provides a pts, use it instead of the last packet pts.
1799        the decoder could be delaying output by a packet or more. */
1800     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1801         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1802         decoded_frame_tb   = avctx->time_base;
1803     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1804         decoded_frame->pts = decoded_frame->pkt_pts;
1805         decoded_frame_tb   = ist->st->time_base;
1806     } else if (pkt->pts != AV_NOPTS_VALUE) {
1807         decoded_frame->pts = pkt->pts;
1808         decoded_frame_tb   = ist->st->time_base;
1809     }else {
1810         decoded_frame->pts = ist->dts;
1811         decoded_frame_tb   = AV_TIME_BASE_Q;
1812     }
1813     pkt->pts           = AV_NOPTS_VALUE;
1814     if (decoded_frame->pts != AV_NOPTS_VALUE)
1815         decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
1816                                               (AVRational){1, ist->st->codec->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
1817                                               (AVRational){1, ist->st->codec->sample_rate});
1818     for (i = 0; i < ist->nb_filters; i++) {
1819         if (i < ist->nb_filters - 1) {
1820             f = ist->filter_frame;
1821             err = av_frame_ref(f, decoded_frame);
1822             if (err < 0)
1823                 break;
1824         } else
1825             f = decoded_frame;
1826         err = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f,
1827                                      AV_BUFFERSRC_FLAG_PUSH);
1828         if (err == AVERROR_EOF)
1829             err = 0; /* ignore */
1830         if (err < 0)
1831             break;
1832     }
1833     decoded_frame->pts = AV_NOPTS_VALUE;
1834
1835     av_frame_unref(ist->filter_frame);
1836     av_frame_unref(decoded_frame);
1837     return err < 0 ? err : ret;
1838 }
1839
1840 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1841 {
1842     AVFrame *decoded_frame, *f;
1843     int i, ret = 0, err = 0, resample_changed;
1844     int64_t best_effort_timestamp;
1845     AVRational *frame_sample_aspect;
1846
1847     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1848         return AVERROR(ENOMEM);
1849     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1850         return AVERROR(ENOMEM);
1851     decoded_frame = ist->decoded_frame;
1852     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1853
1854     update_benchmark(NULL);
1855     ret = avcodec_decode_video2(ist->st->codec,
1856                                 decoded_frame, got_output, pkt);
1857     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1858
1859     if (*got_output || ret<0 || pkt->size)
1860         decode_error_stat[ret<0] ++;
1861
1862     if (!*got_output || ret < 0) {
1863         if (!pkt->size) {
1864             for (i = 0; i < ist->nb_filters; i++)
1865 #if 1
1866                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1867 #else
1868                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1869 #endif
1870         }
1871         return ret;
1872     }
1873
1874     if(ist->top_field_first>=0)
1875         decoded_frame->top_field_first = ist->top_field_first;
1876
1877     ist->frames_decoded++;
1878
1879     if (ist->hwaccel_retrieve_data && decoded_frame->format == ist->hwaccel_pix_fmt) {
1880         err = ist->hwaccel_retrieve_data(ist->st->codec, decoded_frame);
1881         if (err < 0)
1882             goto fail;
1883     }
1884     ist->hwaccel_retrieved_pix_fmt = decoded_frame->format;
1885
1886     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1887     if(best_effort_timestamp != AV_NOPTS_VALUE)
1888         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1889
1890     if (debug_ts) {
1891         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1892                "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d time_base:%d/%d\n",
1893                ist->st->index, av_ts2str(decoded_frame->pts),
1894                av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1895                best_effort_timestamp,
1896                av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1897                decoded_frame->key_frame, decoded_frame->pict_type,
1898                ist->st->time_base.num, ist->st->time_base.den);
1899     }
1900
1901     pkt->size = 0;
1902
1903     if (ist->st->sample_aspect_ratio.num)
1904         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1905
1906     resample_changed = ist->resample_width   != decoded_frame->width  ||
1907                        ist->resample_height  != decoded_frame->height ||
1908                        ist->resample_pix_fmt != decoded_frame->format;
1909     if (resample_changed) {
1910         av_log(NULL, AV_LOG_INFO,
1911                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1912                ist->file_index, ist->st->index,
1913                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1914                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1915
1916         ist->resample_width   = decoded_frame->width;
1917         ist->resample_height  = decoded_frame->height;
1918         ist->resample_pix_fmt = decoded_frame->format;
1919
1920         for (i = 0; i < nb_filtergraphs; i++) {
1921             if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
1922                 configure_filtergraph(filtergraphs[i]) < 0) {
1923                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1924                 exit_program(1);
1925             }
1926         }
1927     }
1928
1929     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1930     for (i = 0; i < ist->nb_filters; i++) {
1931         if (!frame_sample_aspect->num)
1932             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1933
1934         if (i < ist->nb_filters - 1) {
1935             f = ist->filter_frame;
1936             err = av_frame_ref(f, decoded_frame);
1937             if (err < 0)
1938                 break;
1939         } else
1940             f = decoded_frame;
1941         ret = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f, AV_BUFFERSRC_FLAG_PUSH);
1942         if (ret == AVERROR_EOF) {
1943             ret = 0; /* ignore */
1944         } else if (ret < 0) {
1945             av_log(NULL, AV_LOG_FATAL,
1946                    "Failed to inject frame into filter network: %s\n", av_err2str(ret));
1947             exit_program(1);
1948         }
1949     }
1950
1951 fail:
1952     av_frame_unref(ist->filter_frame);
1953     av_frame_unref(decoded_frame);
1954     return err < 0 ? err : ret;
1955 }
1956
1957 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1958 {
1959     AVSubtitle subtitle;
1960     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1961                                           &subtitle, got_output, pkt);
1962
1963     if (*got_output || ret<0 || pkt->size)
1964         decode_error_stat[ret<0] ++;
1965
1966     if (ret < 0 || !*got_output) {
1967         if (!pkt->size)
1968             sub2video_flush(ist);
1969         return ret;
1970     }
1971
1972     if (ist->fix_sub_duration) {
1973         int end = 1;
1974         if (ist->prev_sub.got_output) {
1975             end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1976                              1000, AV_TIME_BASE);
1977             if (end < ist->prev_sub.subtitle.end_display_time) {
1978                 av_log(ist->st->codec, AV_LOG_DEBUG,
1979                        "Subtitle duration reduced from %d to %d%s\n",
1980                        ist->prev_sub.subtitle.end_display_time, end,
1981                        end <= 0 ? ", dropping it" : "");
1982                 ist->prev_sub.subtitle.end_display_time = end;
1983             }
1984         }
1985         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1986         FFSWAP(int,        ret,         ist->prev_sub.ret);
1987         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1988         if (end <= 0)
1989             goto out;
1990     }
1991
1992     if (!*got_output)
1993         return ret;
1994
1995     sub2video_update(ist, &subtitle);
1996
1997     if (!subtitle.num_rects)
1998         goto out;
1999
2000     ist->frames_decoded++;
2001
2002     for (i = 0; i < nb_output_streams; i++) {
2003         OutputStream *ost = output_streams[i];
2004
2005         if (!check_output_constraints(ist, ost) || !ost->encoding_needed
2006             || ost->enc->type != AVMEDIA_TYPE_SUBTITLE)
2007             continue;
2008
2009         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
2010     }
2011
2012 out:
2013     avsubtitle_free(&subtitle);
2014     return ret;
2015 }
2016
2017 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2018 static int output_packet(InputStream *ist, const AVPacket *pkt)
2019 {
2020     int ret = 0, i;
2021     int got_output = 0;
2022
2023     AVPacket avpkt;
2024     if (!ist->saw_first_ts) {
2025         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;
2026         ist->pts = 0;
2027         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
2028             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2029             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
2030         }
2031         ist->saw_first_ts = 1;
2032     }
2033
2034     if (ist->next_dts == AV_NOPTS_VALUE)
2035         ist->next_dts = ist->dts;
2036     if (ist->next_pts == AV_NOPTS_VALUE)
2037         ist->next_pts = ist->pts;
2038
2039     if (pkt == NULL) {
2040         /* EOF handling */
2041         av_init_packet(&avpkt);
2042         avpkt.data = NULL;
2043         avpkt.size = 0;
2044         goto handle_eof;
2045     } else {
2046         avpkt = *pkt;
2047     }
2048
2049     if (pkt->dts != AV_NOPTS_VALUE) {
2050         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2051         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2052             ist->next_pts = ist->pts = ist->dts;
2053     }
2054
2055     // while we have more to decode or while the decoder did output something on EOF
2056     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2057         int duration;
2058     handle_eof:
2059
2060         ist->pts = ist->next_pts;
2061         ist->dts = ist->next_dts;
2062
2063         if (avpkt.size && avpkt.size != pkt->size &&
2064             !(ist->dec->capabilities & CODEC_CAP_SUBFRAMES)) {
2065             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2066                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2067             ist->showed_multi_packet_warning = 1;
2068         }
2069
2070         switch (ist->st->codec->codec_type) {
2071         case AVMEDIA_TYPE_AUDIO:
2072             ret = decode_audio    (ist, &avpkt, &got_output);
2073             break;
2074         case AVMEDIA_TYPE_VIDEO:
2075             ret = decode_video    (ist, &avpkt, &got_output);
2076             if (avpkt.duration) {
2077                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
2078             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
2079                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2080                 duration = ((int64_t)AV_TIME_BASE *
2081                                 ist->st->codec->time_base.num * ticks) /
2082                                 ist->st->codec->time_base.den;
2083             } else
2084                 duration = 0;
2085
2086             if(ist->dts != AV_NOPTS_VALUE && duration) {
2087                 ist->next_dts += duration;
2088             }else
2089                 ist->next_dts = AV_NOPTS_VALUE;
2090
2091             if (got_output)
2092                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
2093             break;
2094         case AVMEDIA_TYPE_SUBTITLE:
2095             ret = transcode_subtitles(ist, &avpkt, &got_output);
2096             break;
2097         default:
2098             return -1;
2099         }
2100
2101         if (ret < 0)
2102             return ret;
2103
2104         avpkt.dts=
2105         avpkt.pts= AV_NOPTS_VALUE;
2106
2107         // touch data and size only if not EOF
2108         if (pkt) {
2109             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
2110                 ret = avpkt.size;
2111             avpkt.data += ret;
2112             avpkt.size -= ret;
2113         }
2114         if (!got_output) {
2115             continue;
2116         }
2117     }
2118
2119     /* handle stream copy */
2120     if (!ist->decoding_needed) {
2121         ist->dts = ist->next_dts;
2122         switch (ist->st->codec->codec_type) {
2123         case AVMEDIA_TYPE_AUDIO:
2124             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2125                              ist->st->codec->sample_rate;
2126             break;
2127         case AVMEDIA_TYPE_VIDEO:
2128             if (ist->framerate.num) {
2129                 // TODO: Remove work-around for c99-to-c89 issue 7
2130                 AVRational time_base_q = AV_TIME_BASE_Q;
2131                 int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate));
2132                 ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q);
2133             } else if (pkt->duration) {
2134                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2135             } else if(ist->st->codec->time_base.num != 0) {
2136                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
2137                 ist->next_dts += ((int64_t)AV_TIME_BASE *
2138                                   ist->st->codec->time_base.num * ticks) /
2139                                   ist->st->codec->time_base.den;
2140             }
2141             break;
2142         }
2143         ist->pts = ist->dts;
2144         ist->next_pts = ist->next_dts;
2145     }
2146     for (i = 0; pkt && i < nb_output_streams; i++) {
2147         OutputStream *ost = output_streams[i];
2148
2149         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2150             continue;
2151
2152         do_streamcopy(ist, ost, pkt);
2153     }
2154
2155     return 0;
2156 }
2157
2158 static void print_sdp(void)
2159 {
2160     char sdp[16384];
2161     int i;
2162     AVFormatContext **avc = av_malloc_array(nb_output_files, sizeof(*avc));
2163
2164     if (!avc)
2165         exit_program(1);
2166     for (i = 0; i < nb_output_files; i++)
2167         avc[i] = output_files[i]->ctx;
2168
2169     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
2170     printf("SDP:\n%s\n", sdp);
2171     fflush(stdout);
2172     av_freep(&avc);
2173 }
2174
2175 static const HWAccel *get_hwaccel(enum AVPixelFormat pix_fmt)
2176 {
2177     int i;
2178     for (i = 0; hwaccels[i].name; i++)
2179         if (hwaccels[i].pix_fmt == pix_fmt)
2180             return &hwaccels[i];
2181     return NULL;
2182 }
2183
2184 static enum AVPixelFormat get_format(AVCodecContext *s, const enum AVPixelFormat *pix_fmts)
2185 {
2186     InputStream *ist = s->opaque;
2187     const enum AVPixelFormat *p;
2188     int ret;
2189
2190     for (p = pix_fmts; *p != -1; p++) {
2191         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(*p);
2192         const HWAccel *hwaccel;
2193
2194         if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
2195             break;
2196
2197         hwaccel = get_hwaccel(*p);
2198         if (!hwaccel ||
2199             (ist->active_hwaccel_id && ist->active_hwaccel_id != hwaccel->id) ||
2200             (ist->hwaccel_id != HWACCEL_AUTO && ist->hwaccel_id != hwaccel->id))
2201             continue;
2202
2203         ret = hwaccel->init(s);
2204         if (ret < 0) {
2205             if (ist->hwaccel_id == hwaccel->id) {
2206                 av_log(NULL, AV_LOG_FATAL,
2207                        "%s hwaccel requested for input stream #%d:%d, "
2208                        "but cannot be initialized.\n", hwaccel->name,
2209                        ist->file_index, ist->st->index);
2210                 exit_program(1);
2211             }
2212             continue;
2213         }
2214         ist->active_hwaccel_id = hwaccel->id;
2215         ist->hwaccel_pix_fmt   = *p;
2216         break;
2217     }
2218
2219     return *p;
2220 }
2221
2222 static int get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
2223 {
2224     InputStream *ist = s->opaque;
2225
2226     if (ist->hwaccel_get_buffer && frame->format == ist->hwaccel_pix_fmt)
2227         return ist->hwaccel_get_buffer(s, frame, flags);
2228
2229     return avcodec_default_get_buffer2(s, frame, flags);
2230 }
2231
2232 static int init_input_stream(int ist_index, char *error, int error_len)
2233 {
2234     int ret;
2235     InputStream *ist = input_streams[ist_index];
2236
2237     if (ist->decoding_needed) {
2238         AVCodec *codec = ist->dec;
2239         if (!codec) {
2240             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2241                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2242             return AVERROR(EINVAL);
2243         }
2244
2245         ist->st->codec->opaque      = ist;
2246         ist->st->codec->get_format  = get_format;
2247         ist->st->codec->get_buffer2 = get_buffer;
2248         ist->st->codec->thread_safe_callbacks = 1;
2249
2250         av_opt_set_int(ist->st->codec, "refcounted_frames", 1, 0);
2251
2252         if (!av_dict_get(ist->decoder_opts, "threads", NULL, 0))
2253             av_dict_set(&ist->decoder_opts, "threads", "auto", 0);
2254         if ((ret = avcodec_open2(ist->st->codec, codec, &ist->decoder_opts)) < 0) {
2255             if (ret == AVERROR_EXPERIMENTAL)
2256                 abort_codec_experimental(codec, 0);
2257
2258             snprintf(error, error_len,
2259                      "Error while opening decoder for input stream "
2260                      "#%d:%d : %s",
2261                      ist->file_index, ist->st->index, av_err2str(ret));
2262             return ret;
2263         }
2264         assert_avoptions(ist->decoder_opts);
2265     }
2266
2267     ist->next_pts = AV_NOPTS_VALUE;
2268     ist->next_dts = AV_NOPTS_VALUE;
2269
2270     return 0;
2271 }
2272
2273 static InputStream *get_input_stream(OutputStream *ost)
2274 {
2275     if (ost->source_index >= 0)
2276         return input_streams[ost->source_index];
2277     return NULL;
2278 }
2279
2280 static int compare_int64(const void *a, const void *b)
2281 {
2282     int64_t va = *(int64_t *)a, vb = *(int64_t *)b;
2283     return va < vb ? -1 : va > vb ? +1 : 0;
2284 }
2285
2286 static void parse_forced_key_frames(char *kf, OutputStream *ost,
2287                                     AVCodecContext *avctx)
2288 {
2289     char *p;
2290     int n = 1, i, size, index = 0;
2291     int64_t t, *pts;
2292
2293     for (p = kf; *p; p++)
2294         if (*p == ',')
2295             n++;
2296     size = n;
2297     pts = av_malloc_array(size, sizeof(*pts));
2298     if (!pts) {
2299         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
2300         exit_program(1);
2301     }
2302
2303     p = kf;
2304     for (i = 0; i < n; i++) {
2305         char *next = strchr(p, ',');
2306
2307         if (next)
2308             *next++ = 0;
2309
2310         if (!memcmp(p, "chapters", 8)) {
2311
2312             AVFormatContext *avf = output_files[ost->file_index]->ctx;
2313             int j;
2314
2315             if (avf->nb_chapters > INT_MAX - size ||
2316                 !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
2317                                      sizeof(*pts)))) {
2318                 av_log(NULL, AV_LOG_FATAL,
2319                        "Could not allocate forced key frames array.\n");
2320                 exit_program(1);
2321             }
2322             t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
2323             t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2324
2325             for (j = 0; j < avf->nb_chapters; j++) {
2326                 AVChapter *c = avf->chapters[j];
2327                 av_assert1(index < size);
2328                 pts[index++] = av_rescale_q(c->start, c->time_base,
2329                                             avctx->time_base) + t;
2330             }
2331
2332         } else {
2333
2334             t = parse_time_or_die("force_key_frames", p, 1);
2335             av_assert1(index < size);
2336             pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2337
2338         }
2339
2340         p = next;
2341     }
2342
2343     av_assert0(index == size);
2344     qsort(pts, size, sizeof(*pts), compare_int64);
2345     ost->forced_kf_count = size;
2346     ost->forced_kf_pts   = pts;
2347 }
2348
2349 static void report_new_stream(int input_index, AVPacket *pkt)
2350 {
2351     InputFile *file = input_files[input_index];
2352     AVStream *st = file->ctx->streams[pkt->stream_index];
2353
2354     if (pkt->stream_index < file->nb_streams_warn)
2355         return;
2356     av_log(file->ctx, AV_LOG_WARNING,
2357            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
2358            av_get_media_type_string(st->codec->codec_type),
2359            input_index, pkt->stream_index,
2360            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
2361     file->nb_streams_warn = pkt->stream_index + 1;
2362 }
2363
2364 static int transcode_init(void)
2365 {
2366     int ret = 0, i, j, k;
2367     AVFormatContext *oc;
2368     AVCodecContext *codec;
2369     OutputStream *ost;
2370     InputStream *ist;
2371     char error[1024];
2372     int want_sdp = 1;
2373
2374     for (i = 0; i < nb_filtergraphs; i++) {
2375         FilterGraph *fg = filtergraphs[i];
2376         for (j = 0; j < fg->nb_outputs; j++) {
2377             OutputFilter *ofilter = fg->outputs[j];
2378             if (!ofilter->ost || ofilter->ost->source_index >= 0)
2379                 continue;
2380             if (fg->nb_inputs != 1)
2381                 continue;
2382             for (k = nb_input_streams-1; k >= 0 ; k--)
2383                 if (fg->inputs[0]->ist == input_streams[k])
2384                     break;
2385             ofilter->ost->source_index = k;
2386         }
2387     }
2388
2389     /* init framerate emulation */
2390     for (i = 0; i < nb_input_files; i++) {
2391         InputFile *ifile = input_files[i];
2392         if (ifile->rate_emu)
2393             for (j = 0; j < ifile->nb_streams; j++)
2394                 input_streams[j + ifile->ist_index]->start = av_gettime();
2395     }
2396
2397     /* output stream init */
2398     for (i = 0; i < nb_output_files; i++) {
2399         oc = output_files[i]->ctx;
2400         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2401             av_dump_format(oc, i, oc->filename, 1);
2402             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2403             return AVERROR(EINVAL);
2404         }
2405     }
2406
2407     /* init complex filtergraphs */
2408     for (i = 0; i < nb_filtergraphs; i++)
2409         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2410             return ret;
2411
2412     /* for each output stream, we compute the right encoding parameters */
2413     for (i = 0; i < nb_output_streams; i++) {
2414         AVCodecContext *dec_ctx = NULL;
2415         ost = output_streams[i];
2416         oc  = output_files[ost->file_index]->ctx;
2417         ist = get_input_stream(ost);
2418
2419         if (ost->attachment_filename)
2420             continue;
2421
2422         codec  = ost->st->codec;
2423
2424         if (ist) {
2425             dec_ctx = ist->st->codec;
2426
2427             ost->st->disposition          = ist->st->disposition;
2428             codec->bits_per_raw_sample    = dec_ctx->bits_per_raw_sample;
2429             codec->chroma_sample_location = dec_ctx->chroma_sample_location;
2430         } else {
2431             for (j=0; j<oc->nb_streams; j++) {
2432                 AVStream *st = oc->streams[j];
2433                 if (st != ost->st && st->codec->codec_type == codec->codec_type)
2434                     break;
2435             }
2436             if (j == oc->nb_streams)
2437                 if (codec->codec_type == AVMEDIA_TYPE_AUDIO || codec->codec_type == AVMEDIA_TYPE_VIDEO)
2438                     ost->st->disposition = AV_DISPOSITION_DEFAULT;
2439         }
2440
2441         if (ost->stream_copy) {
2442             AVRational sar;
2443             uint64_t extra_size;
2444
2445             av_assert0(ist && !ost->filter);
2446
2447             extra_size = (uint64_t)dec_ctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2448
2449             if (extra_size > INT_MAX) {
2450                 return AVERROR(EINVAL);
2451             }
2452
2453             /* if stream_copy is selected, no need to decode or encode */
2454             codec->codec_id   = dec_ctx->codec_id;
2455             codec->codec_type = dec_ctx->codec_type;
2456
2457             if (!codec->codec_tag) {
2458                 unsigned int codec_tag;
2459                 if (!oc->oformat->codec_tag ||
2460                      av_codec_get_id (oc->oformat->codec_tag, dec_ctx->codec_tag) == codec->codec_id ||
2461                      !av_codec_get_tag2(oc->oformat->codec_tag, dec_ctx->codec_id, &codec_tag))
2462                     codec->codec_tag = dec_ctx->codec_tag;
2463             }
2464
2465             codec->bit_rate       = dec_ctx->bit_rate;
2466             codec->rc_max_rate    = dec_ctx->rc_max_rate;
2467             codec->rc_buffer_size = dec_ctx->rc_buffer_size;
2468             codec->field_order    = dec_ctx->field_order;
2469             codec->extradata      = av_mallocz(extra_size);
2470             if (!codec->extradata) {
2471                 return AVERROR(ENOMEM);
2472             }
2473             memcpy(codec->extradata, dec_ctx->extradata, dec_ctx->extradata_size);
2474             codec->extradata_size= dec_ctx->extradata_size;
2475             codec->bits_per_coded_sample  = dec_ctx->bits_per_coded_sample;
2476
2477             codec->time_base = ist->st->time_base;
2478             /*
2479              * Avi is a special case here because it supports variable fps but
2480              * having the fps and timebase differe significantly adds quite some
2481              * overhead
2482              */
2483             if(!strcmp(oc->oformat->name, "avi")) {
2484                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2485                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2486                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(dec_ctx->time_base)
2487                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(dec_ctx->time_base) < 1.0/500
2488                      || copy_tb==2){
2489                     codec->time_base.num = ist->st->r_frame_rate.den;
2490                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2491                     codec->ticks_per_frame = 2;
2492                 } else if (   copy_tb<0 && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2493                                  && av_q2d(ist->st->time_base) < 1.0/500
2494                     || copy_tb==0){
2495                     codec->time_base = dec_ctx->time_base;
2496                     codec->time_base.num *= dec_ctx->ticks_per_frame;
2497                     codec->time_base.den *= 2;
2498                     codec->ticks_per_frame = 2;
2499                 }
2500             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2501                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2502                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2503                       && strcmp(oc->oformat->name, "f4v")
2504             ) {
2505                 if(   copy_tb<0 && dec_ctx->time_base.den
2506                                 && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > av_q2d(ist->st->time_base)
2507                                 && av_q2d(ist->st->time_base) < 1.0/500
2508                    || copy_tb==0){
2509                     codec->time_base = dec_ctx->time_base;
2510                     codec->time_base.num *= dec_ctx->ticks_per_frame;
2511                 }
2512             }
2513             if (   codec->codec_tag == AV_RL32("tmcd")
2514                 && dec_ctx->time_base.num < dec_ctx->time_base.den
2515                 && dec_ctx->time_base.num > 0
2516                 && 121LL*dec_ctx->time_base.num > dec_ctx->time_base.den) {
2517                 codec->time_base = dec_ctx->time_base;
2518             }
2519
2520             if (ist && !ost->frame_rate.num)
2521                 ost->frame_rate = ist->framerate;
2522             if(ost->frame_rate.num)
2523                 codec->time_base = av_inv_q(ost->frame_rate);
2524
2525             av_reduce(&codec->time_base.num, &codec->time_base.den,
2526                         codec->time_base.num, codec->time_base.den, INT_MAX);
2527
2528             ost->parser = av_parser_init(codec->codec_id);
2529
2530             switch (codec->codec_type) {
2531             case AVMEDIA_TYPE_AUDIO:
2532                 if (audio_volume != 256) {
2533                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2534                     exit_program(1);
2535                 }
2536                 codec->channel_layout     = dec_ctx->channel_layout;
2537                 codec->sample_rate        = dec_ctx->sample_rate;
2538                 codec->channels           = dec_ctx->channels;
2539                 codec->frame_size         = dec_ctx->frame_size;
2540                 codec->audio_service_type = dec_ctx->audio_service_type;
2541                 codec->block_align        = dec_ctx->block_align;
2542                 codec->delay              = dec_ctx->delay;
2543                 if((codec->block_align == 1 || codec->block_align == 1152 || codec->block_align == 576) && codec->codec_id == AV_CODEC_ID_MP3)
2544                     codec->block_align= 0;
2545                 if(codec->codec_id == AV_CODEC_ID_AC3)
2546                     codec->block_align= 0;
2547                 break;
2548             case AVMEDIA_TYPE_VIDEO:
2549                 codec->pix_fmt            = dec_ctx->pix_fmt;
2550                 codec->width              = dec_ctx->width;
2551                 codec->height             = dec_ctx->height;
2552                 codec->has_b_frames       = dec_ctx->has_b_frames;
2553                 if (ost->frame_aspect_ratio.num) { // overridden by the -aspect cli option
2554                     sar =
2555                         av_mul_q(ost->frame_aspect_ratio,
2556                                  (AVRational){ codec->height, codec->width });
2557                     av_log(NULL, AV_LOG_WARNING, "Overriding aspect ratio "
2558                            "with stream copy may produce invalid files\n");
2559                 }
2560                 else if (ist->st->sample_aspect_ratio.num)
2561                     sar = ist->st->sample_aspect_ratio;
2562                 else
2563                     sar = dec_ctx->sample_aspect_ratio;
2564                 ost->st->sample_aspect_ratio = codec->sample_aspect_ratio = sar;
2565                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2566                 break;
2567             case AVMEDIA_TYPE_SUBTITLE:
2568                 codec->width  = dec_ctx->width;
2569                 codec->height = dec_ctx->height;
2570                 break;
2571             case AVMEDIA_TYPE_DATA:
2572             case AVMEDIA_TYPE_ATTACHMENT:
2573                 break;
2574             default:
2575                 abort();
2576             }
2577         } else {
2578             if (!ost->enc)
2579                 ost->enc = avcodec_find_encoder(codec->codec_id);
2580             if (!ost->enc) {
2581                 /* should only happen when a default codec is not present. */
2582                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2583                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2584                 ret = AVERROR(EINVAL);
2585                 goto dump_format;
2586             }
2587
2588             if (ist)
2589                 ist->decoding_needed++;
2590             ost->encoding_needed = 1;
2591
2592             if (!ost->filter &&
2593                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2594                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2595                     FilterGraph *fg;
2596                     fg = init_simple_filtergraph(ist, ost);
2597                     if (configure_filtergraph(fg)) {
2598                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2599                         exit_program(1);
2600                     }
2601             }
2602
2603             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2604                 if (ost->filter && !ost->frame_rate.num)
2605                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2606                 if (ist && !ost->frame_rate.num)
2607                     ost->frame_rate = ist->framerate;
2608                 if (ist && !ost->frame_rate.num)
2609                     ost->frame_rate = ist->st->r_frame_rate;
2610                 if (ist && !ost->frame_rate.num) {
2611                     ost->frame_rate = (AVRational){25, 1};
2612                     av_log(NULL, AV_LOG_WARNING,
2613                            "No information "
2614                            "about the input framerate is available. Falling "
2615                            "back to a default value of 25fps for output stream #%d:%d. Use the -r option "
2616                            "if you want a different framerate.\n",
2617                            ost->file_index, ost->index);
2618                 }
2619 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2620                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2621                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2622                     ost->frame_rate = ost->enc->supported_framerates[idx];
2623                 }
2624                 if (codec->codec_id == AV_CODEC_ID_MPEG4) {
2625                     av_reduce(&ost->frame_rate.num, &ost->frame_rate.den,
2626                               ost->frame_rate.num, ost->frame_rate.den, 65535);
2627                 }
2628             }
2629
2630             switch (codec->codec_type) {
2631             case AVMEDIA_TYPE_AUDIO:
2632                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2633                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2634                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2635                 codec->channels       = avfilter_link_get_channels(ost->filter->filter->inputs[0]);
2636                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2637                 break;
2638             case AVMEDIA_TYPE_VIDEO:
2639                 codec->time_base = av_inv_q(ost->frame_rate);
2640                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2641                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2642                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2643                    && (video_sync_method == VSYNC_CFR || video_sync_method == VSYNC_VSCFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2644                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2645                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2646                 }
2647                 for (j = 0; j < ost->forced_kf_count; j++)
2648                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2649                                                          AV_TIME_BASE_Q,
2650                                                          codec->time_base);
2651
2652                 codec->width  = ost->filter->filter->inputs[0]->w;
2653                 codec->height = ost->filter->filter->inputs[0]->h;
2654                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2655                     ost->frame_aspect_ratio.num ? // overridden by the -aspect cli option
2656                     av_mul_q(ost->frame_aspect_ratio, (AVRational){ codec->height, codec->width }) :
2657                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2658                 if (!strncmp(ost->enc->name, "libx264", 7) &&
2659                     codec->pix_fmt == AV_PIX_FMT_NONE &&
2660                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2661                     av_log(NULL, AV_LOG_WARNING,
2662                            "No pixel format specified, %s for H.264 encoding chosen.\n"
2663                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2664                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2665                 if (!strncmp(ost->enc->name, "mpeg2video", 10) &&
2666                     codec->pix_fmt == AV_PIX_FMT_NONE &&
2667                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2668                     av_log(NULL, AV_LOG_WARNING,
2669                            "No pixel format specified, %s for MPEG-2 encoding chosen.\n"
2670                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2671                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2672                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2673
2674                 if (!dec_ctx ||
2675                     codec->width   != dec_ctx->width  ||
2676                     codec->height  != dec_ctx->height ||
2677                     codec->pix_fmt != dec_ctx->pix_fmt) {
2678                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2679                 }
2680
2681                 if (ost->forced_keyframes) {
2682                     if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
2683                         ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
2684                                             forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
2685                         if (ret < 0) {
2686                             av_log(NULL, AV_LOG_ERROR,
2687                                    "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
2688                             return ret;
2689                         }
2690                         ost->forced_keyframes_expr_const_values[FKF_N] = 0;
2691                         ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
2692                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
2693                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;
2694                     } else {
2695                         parse_forced_key_frames(ost->forced_keyframes, ost, ost->st->codec);
2696                     }
2697                 }
2698                 break;
2699             case AVMEDIA_TYPE_SUBTITLE:
2700                 codec->time_base = (AVRational){1, 1000};
2701                 if (!codec->width) {
2702                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2703                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2704                 }
2705                 break;
2706             default:
2707                 abort();
2708                 break;
2709             }
2710             /* two pass mode */
2711             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2712                 char logfilename[1024];
2713                 FILE *f;
2714
2715                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2716                          ost->logfile_prefix ? ost->logfile_prefix :
2717                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2718                          i);
2719                 if (!strcmp(ost->enc->name, "libx264")) {
2720                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2721                 } else {
2722                     if (codec->flags & CODEC_FLAG_PASS2) {
2723                         char  *logbuffer;
2724                         size_t logbuffer_size;
2725                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2726                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2727                                    logfilename);
2728                             exit_program(1);
2729                         }
2730                         codec->stats_in = logbuffer;
2731                     }
2732                     if (codec->flags & CODEC_FLAG_PASS1) {
2733                         f = av_fopen_utf8(logfilename, "wb");
2734                         if (!f) {
2735                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2736                                 logfilename, strerror(errno));
2737                             exit_program(1);
2738                         }
2739                         ost->logfile = f;
2740                     }
2741                 }
2742             }
2743         }
2744     }
2745
2746     /* open each encoder */
2747     for (i = 0; i < nb_output_streams; i++) {
2748         ost = output_streams[i];
2749         if (ost->encoding_needed) {
2750             AVCodec      *codec = ost->enc;
2751             AVCodecContext *dec = NULL;
2752
2753             if ((ist = get_input_stream(ost)))
2754                 dec = ist->st->codec;
2755             if (dec && dec->subtitle_header) {
2756                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2757                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2758                 if (!ost->st->codec->subtitle_header) {
2759                     ret = AVERROR(ENOMEM);
2760                     goto dump_format;
2761                 }
2762                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2763                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2764             }
2765             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2766                 av_dict_set(&ost->opts, "threads", "auto", 0);
2767             if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
2768                 if (ret == AVERROR_EXPERIMENTAL)
2769                     abort_codec_experimental(codec, 1);
2770                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2771                         ost->file_index, ost->index);
2772                 goto dump_format;
2773             }
2774             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2775                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2776                 av_buffersink_set_frame_size(ost->filter->filter,
2777                                              ost->st->codec->frame_size);
2778             assert_avoptions(ost->opts);
2779             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2780                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2781                                              " It takes bits/s as argument, not kbits/s\n");
2782         } else {
2783             av_opt_set_dict(ost->st->codec, &ost->opts);
2784         }
2785     }
2786
2787     /* init input streams */
2788     for (i = 0; i < nb_input_streams; i++)
2789         if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
2790             for (i = 0; i < nb_output_streams; i++) {
2791                 ost = output_streams[i];
2792                 avcodec_close(ost->st->codec);
2793             }
2794             goto dump_format;
2795         }
2796
2797     /* discard unused programs */
2798     for (i = 0; i < nb_input_files; i++) {
2799         InputFile *ifile = input_files[i];
2800         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2801             AVProgram *p = ifile->ctx->programs[j];
2802             int discard  = AVDISCARD_ALL;
2803
2804             for (k = 0; k < p->nb_stream_indexes; k++)
2805                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2806                     discard = AVDISCARD_DEFAULT;
2807                     break;
2808                 }
2809             p->discard = discard;
2810         }
2811     }
2812
2813     /* open files and write file headers */
2814     for (i = 0; i < nb_output_files; i++) {
2815         oc = output_files[i]->ctx;
2816         oc->interrupt_callback = int_cb;
2817         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2818             snprintf(error, sizeof(error),
2819                      "Could not write header for output file #%d "
2820                      "(incorrect codec parameters ?): %s",
2821                      i, av_err2str(ret));
2822             ret = AVERROR(EINVAL);
2823             goto dump_format;
2824         }
2825 //         assert_avoptions(output_files[i]->opts);
2826         if (strcmp(oc->oformat->name, "rtp")) {
2827             want_sdp = 0;
2828         }
2829     }
2830
2831  dump_format:
2832     /* dump the file output parameters - cannot be done before in case
2833        of stream copy */
2834     for (i = 0; i < nb_output_files; i++) {
2835         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2836     }
2837
2838     /* dump the stream mapping */
2839     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2840     for (i = 0; i < nb_input_streams; i++) {
2841         ist = input_streams[i];
2842
2843         for (j = 0; j < ist->nb_filters; j++) {
2844             if (ist->filters[j]->graph->graph_desc) {
2845                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2846                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2847                        ist->filters[j]->name);
2848                 if (nb_filtergraphs > 1)
2849                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2850                 av_log(NULL, AV_LOG_INFO, "\n");
2851             }
2852         }
2853     }
2854
2855     for (i = 0; i < nb_output_streams; i++) {
2856         ost = output_streams[i];
2857
2858         if (ost->attachment_filename) {
2859             /* an attached file */
2860             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2861                    ost->attachment_filename, ost->file_index, ost->index);
2862             continue;
2863         }
2864
2865         if (ost->filter && ost->filter->graph->graph_desc) {
2866             /* output from a complex graph */
2867             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2868             if (nb_filtergraphs > 1)
2869                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2870
2871             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2872                    ost->index, ost->enc ? ost->enc->name : "?");
2873             continue;
2874         }
2875
2876         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2877                input_streams[ost->source_index]->file_index,
2878                input_streams[ost->source_index]->st->index,
2879                ost->file_index,
2880                ost->index);
2881         if (ost->sync_ist != input_streams[ost->source_index])
2882             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2883                    ost->sync_ist->file_index,
2884                    ost->sync_ist->st->index);
2885         if (ost->stream_copy)
2886             av_log(NULL, AV_LOG_INFO, " (copy)");
2887         else
2888             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2889                    input_streams[ost->source_index]->dec->name : "?",
2890                    ost->enc ? ost->enc->name : "?");
2891         av_log(NULL, AV_LOG_INFO, "\n");
2892     }
2893
2894     if (ret) {
2895         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2896         return ret;
2897     }
2898
2899     if (want_sdp) {
2900         print_sdp();
2901     }
2902
2903     transcode_init_done = 1;
2904
2905     return 0;
2906 }
2907
2908 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2909 static int need_output(void)
2910 {
2911     int i;
2912
2913     for (i = 0; i < nb_output_streams; i++) {
2914         OutputStream *ost    = output_streams[i];
2915         OutputFile *of       = output_files[ost->file_index];
2916         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2917
2918         if (ost->finished ||
2919             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2920             continue;
2921         if (ost->frame_number >= ost->max_frames) {
2922             int j;
2923             for (j = 0; j < of->ctx->nb_streams; j++)
2924                 close_output_stream(output_streams[of->ost_index + j]);
2925             continue;
2926         }
2927
2928         return 1;
2929     }
2930
2931     return 0;
2932 }
2933
2934 /**
2935  * Select the output stream to process.
2936  *
2937  * @return  selected output stream, or NULL if none available
2938  */
2939 static OutputStream *choose_output(void)
2940 {
2941     int i;
2942     int64_t opts_min = INT64_MAX;
2943     OutputStream *ost_min = NULL;
2944
2945     for (i = 0; i < nb_output_streams; i++) {
2946         OutputStream *ost = output_streams[i];
2947         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2948                                     AV_TIME_BASE_Q);
2949         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2950             opts_min = opts;
2951             ost_min  = ost;
2952         }
2953     }
2954     return ost_min;
2955 }
2956
2957 static int check_keyboard_interaction(int64_t cur_time)
2958 {
2959     int i, ret, key;
2960     static int64_t last_time;
2961     if (received_nb_signals)
2962         return AVERROR_EXIT;
2963     /* read_key() returns 0 on EOF */
2964     if(cur_time - last_time >= 100000 && !run_as_daemon){
2965         key =  read_key();
2966         last_time = cur_time;
2967     }else
2968         key = -1;
2969     if (key == 'q')
2970         return AVERROR_EXIT;
2971     if (key == '+') av_log_set_level(av_log_get_level()+10);
2972     if (key == '-') av_log_set_level(av_log_get_level()-10);
2973     if (key == 's') qp_hist     ^= 1;
2974     if (key == 'h'){
2975         if (do_hex_dump){
2976             do_hex_dump = do_pkt_dump = 0;
2977         } else if(do_pkt_dump){
2978             do_hex_dump = 1;
2979         } else
2980             do_pkt_dump = 1;
2981         av_log_set_level(AV_LOG_DEBUG);
2982     }
2983     if (key == 'c' || key == 'C'){
2984         char buf[4096], target[64], command[256], arg[256] = {0};
2985         double time;
2986         int k, n = 0;
2987         fprintf(stderr, "\nEnter command: <target>|all <time>|-1 <command>[ <argument>]\n");
2988         i = 0;
2989         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2990             if (k > 0)
2991                 buf[i++] = k;
2992         buf[i] = 0;
2993         if (k > 0 &&
2994             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2995             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2996                    target, time, command, arg);
2997             for (i = 0; i < nb_filtergraphs; i++) {
2998                 FilterGraph *fg = filtergraphs[i];
2999                 if (fg->graph) {
3000                     if (time < 0) {
3001                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
3002                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
3003                         fprintf(stderr, "Command reply for stream %d: ret:%d res:\n%s", i, ret, buf);
3004                     } else if (key == 'c') {
3005                         fprintf(stderr, "Queing commands only on filters supporting the specific command is unsupported\n");
3006                         ret = AVERROR_PATCHWELCOME;
3007                     } else {
3008                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
3009                     }
3010                 }
3011             }
3012         } else {
3013             av_log(NULL, AV_LOG_ERROR,
3014                    "Parse error, at least 3 arguments were expected, "
3015                    "only %d given in string '%s'\n", n, buf);
3016         }
3017     }
3018     if (key == 'd' || key == 'D'){
3019         int debug=0;
3020         if(key == 'D') {
3021             debug = input_streams[0]->st->codec->debug<<1;
3022             if(!debug) debug = 1;
3023             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
3024                 debug += debug;
3025         }else
3026             if(scanf("%d", &debug)!=1)
3027                 fprintf(stderr,"error parsing debug value\n");
3028         for(i=0;i<nb_input_streams;i++) {
3029             input_streams[i]->st->codec->debug = debug;
3030         }
3031         for(i=0;i<nb_output_streams;i++) {
3032             OutputStream *ost = output_streams[i];
3033             ost->st->codec->debug = debug;
3034         }
3035         if(debug) av_log_set_level(AV_LOG_DEBUG);
3036         fprintf(stderr,"debug=%d\n", debug);
3037     }
3038     if (key == '?'){
3039         fprintf(stderr, "key    function\n"
3040                         "?      show this help\n"
3041                         "+      increase verbosity\n"
3042                         "-      decrease verbosity\n"
3043                         "c      Send command to first matching filter supporting it\n"
3044                         "C      Send/Que command to all matching filters\n"
3045                         "D      cycle through available debug modes\n"
3046                         "h      dump packets/hex press to cycle through the 3 states\n"
3047                         "q      quit\n"
3048                         "s      Show QP histogram\n"
3049         );
3050     }
3051     return 0;
3052 }
3053
3054 #if HAVE_PTHREADS
3055 static void *input_thread(void *arg)
3056 {
3057     InputFile *f = arg;
3058     int ret = 0;
3059
3060     while (!transcoding_finished && ret >= 0) {
3061         AVPacket pkt;
3062         ret = av_read_frame(f->ctx, &pkt);
3063
3064         if (ret == AVERROR(EAGAIN)) {
3065             av_usleep(10000);
3066             ret = 0;
3067             continue;
3068         } else if (ret < 0)
3069             break;
3070
3071         pthread_mutex_lock(&f->fifo_lock);
3072         while (!av_fifo_space(f->fifo))
3073             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
3074
3075         av_dup_packet(&pkt);
3076         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
3077         pthread_cond_signal(&f->fifo_cond);
3078
3079         pthread_mutex_unlock(&f->fifo_lock);
3080     }
3081
3082     pthread_mutex_lock(&f->fifo_lock);
3083     f->finished = 1;
3084     pthread_cond_signal(&f->fifo_cond);
3085     pthread_mutex_unlock(&f->fifo_lock);
3086     return NULL;
3087 }
3088
3089 static void free_input_threads(void)
3090 {
3091     int i;
3092
3093     if (nb_input_files == 1)
3094         return;
3095
3096     transcoding_finished = 1;
3097
3098     for (i = 0; i < nb_input_files; i++) {
3099         InputFile *f = input_files[i];
3100         AVPacket pkt;
3101
3102         if (!f->fifo || f->joined)
3103             continue;
3104
3105         pthread_mutex_lock(&f->fifo_lock);
3106         while (av_fifo_size(f->fifo)) {
3107             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
3108             av_free_packet(&pkt);
3109         }
3110         pthread_cond_signal(&f->fifo_cond);
3111         pthread_mutex_unlock(&f->fifo_lock);
3112
3113         pthread_join(f->thread, NULL);
3114         f->joined = 1;
3115
3116         while (av_fifo_size(f->fifo)) {
3117             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
3118             av_free_packet(&pkt);
3119         }
3120         av_fifo_free(f->fifo);
3121     }
3122 }
3123
3124 static int init_input_threads(void)
3125 {
3126     int i, ret;
3127
3128     if (nb_input_files == 1)
3129         return 0;
3130
3131     for (i = 0; i < nb_input_files; i++) {
3132         InputFile *f = input_files[i];
3133
3134         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
3135             return AVERROR(ENOMEM);
3136
3137         if (f->ctx->pb ? !f->ctx->pb->seekable :
3138             strcmp(f->ctx->iformat->name, "lavfi"))
3139             f->non_blocking = 1;
3140
3141         pthread_mutex_init(&f->fifo_lock, NULL);
3142         pthread_cond_init (&f->fifo_cond, NULL);
3143
3144         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
3145             return AVERROR(ret);
3146     }
3147     return 0;
3148 }
3149
3150 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
3151 {
3152     int ret = 0;
3153
3154     pthread_mutex_lock(&f->fifo_lock);
3155
3156     while (1) {
3157     if (av_fifo_size(f->fifo)) {
3158         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
3159         pthread_cond_signal(&f->fifo_cond);
3160         break;
3161     } else {
3162         if (f->finished) {
3163             ret = AVERROR_EOF;
3164             break;
3165         }
3166         if (f->non_blocking) {
3167             ret = AVERROR(EAGAIN);
3168             break;
3169         }
3170         pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
3171     }
3172     }
3173
3174     pthread_mutex_unlock(&f->fifo_lock);
3175
3176     return ret;
3177 }
3178 #endif
3179
3180 static int get_input_packet(InputFile *f, AVPacket *pkt)
3181 {
3182     if (f->rate_emu) {
3183         int i;
3184         for (i = 0; i < f->nb_streams; i++) {
3185             InputStream *ist = input_streams[f->ist_index + i];
3186             int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
3187             int64_t now = av_gettime() - ist->start;
3188             if (pts > now)
3189                 return AVERROR(EAGAIN);
3190         }
3191     }
3192
3193 #if HAVE_PTHREADS
3194     if (nb_input_files > 1)
3195         return get_input_packet_mt(f, pkt);
3196 #endif
3197     return av_read_frame(f->ctx, pkt);
3198 }
3199
3200 static int got_eagain(void)
3201 {
3202     int i;
3203     for (i = 0; i < nb_output_streams; i++)
3204         if (output_streams[i]->unavailable)
3205             return 1;
3206     return 0;
3207 }
3208
3209 static void reset_eagain(void)
3210 {
3211     int i;
3212     for (i = 0; i < nb_input_files; i++)
3213         input_files[i]->eagain = 0;
3214     for (i = 0; i < nb_output_streams; i++)
3215         output_streams[i]->unavailable = 0;
3216 }
3217
3218 /*
3219  * Return
3220  * - 0 -- one packet was read and processed
3221  * - AVERROR(EAGAIN) -- no packets were available for selected file,
3222  *   this function should be called again
3223  * - AVERROR_EOF -- this function should not be called again
3224  */
3225 static int process_input(int file_index)
3226 {
3227     InputFile *ifile = input_files[file_index];
3228     AVFormatContext *is;
3229     InputStream *ist;
3230     AVPacket pkt;
3231     int ret, i, j;
3232
3233     is  = ifile->ctx;
3234     ret = get_input_packet(ifile, &pkt);
3235
3236     if (ret == AVERROR(EAGAIN)) {
3237         ifile->eagain = 1;
3238         return ret;
3239     }
3240     if (ret < 0) {
3241         if (ret != AVERROR_EOF) {
3242             print_error(is->filename, ret);
3243             if (exit_on_error)
3244                 exit_program(1);
3245         }
3246         ifile->eof_reached = 1;
3247
3248         for (i = 0; i < ifile->nb_streams; i++) {
3249             ist = input_streams[ifile->ist_index + i];
3250             if (ist->decoding_needed)
3251                 output_packet(ist, NULL);
3252
3253             /* mark all outputs that don't go through lavfi as finished */
3254             for (j = 0; j < nb_output_streams; j++) {
3255                 OutputStream *ost = output_streams[j];
3256
3257                 if (ost->source_index == ifile->ist_index + i &&
3258                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
3259                     close_output_stream(ost);
3260             }
3261         }
3262
3263         return AVERROR(EAGAIN);
3264     }
3265
3266     reset_eagain();
3267
3268     if (do_pkt_dump) {
3269         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
3270                          is->streams[pkt.stream_index]);
3271     }
3272     /* the following test is needed in case new streams appear
3273        dynamically in stream : we ignore them */
3274     if (pkt.stream_index >= ifile->nb_streams) {
3275         report_new_stream(file_index, &pkt);
3276         goto discard_packet;
3277     }
3278
3279     ist = input_streams[ifile->ist_index + pkt.stream_index];
3280
3281     ist->data_size += pkt.size;
3282     ist->nb_packets++;
3283
3284     if (ist->discard)
3285         goto discard_packet;
3286
3287     if (debug_ts) {
3288         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
3289                "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",
3290                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
3291                av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
3292                av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
3293                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3294                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3295                av_ts2str(input_files[ist->file_index]->ts_offset),
3296                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3297     }
3298
3299     if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
3300         int64_t stime, stime2;
3301         // Correcting starttime based on the enabled streams
3302         // 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.
3303         //       so we instead do it here as part of discontinuity handling
3304         if (   ist->next_dts == AV_NOPTS_VALUE
3305             && ifile->ts_offset == -is->start_time
3306             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
3307             int64_t new_start_time = INT64_MAX;
3308             for (i=0; i<is->nb_streams; i++) {
3309                 AVStream *st = is->streams[i];
3310                 if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
3311                     continue;
3312                 new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
3313             }
3314             if (new_start_time > is->start_time) {
3315                 av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
3316                 ifile->ts_offset = -new_start_time;
3317             }
3318         }
3319
3320         stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
3321         stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
3322         ist->wrap_correction_done = 1;
3323
3324         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
3325             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
3326             ist->wrap_correction_done = 0;
3327         }
3328         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
3329             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
3330             ist->wrap_correction_done = 0;
3331         }
3332     }
3333
3334     /* add the stream-global side data to the first packet */
3335     if (ist->nb_packets == 1)
3336         if (ist->st->nb_side_data)
3337             av_packet_split_side_data(&pkt);
3338         for (i = 0; i < ist->st->nb_side_data; i++) {
3339             AVPacketSideData *src_sd = &ist->st->side_data[i];
3340             uint8_t *dst_data;
3341
3342             if (av_packet_get_side_data(&pkt, src_sd->type, NULL))
3343                 continue;
3344
3345             dst_data = av_packet_new_side_data(&pkt, src_sd->type, src_sd->size);
3346             if (!dst_data)
3347                 exit_program(1);
3348
3349             memcpy(dst_data, src_sd->data, src_sd->size);
3350         }
3351
3352     if (pkt.dts != AV_NOPTS_VALUE)
3353         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3354     if (pkt.pts != AV_NOPTS_VALUE)
3355         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3356
3357     if (pkt.pts != AV_NOPTS_VALUE)
3358         pkt.pts *= ist->ts_scale;
3359     if (pkt.dts != AV_NOPTS_VALUE)
3360         pkt.dts *= ist->ts_scale;
3361
3362     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts == AV_NOPTS_VALUE && !copy_ts
3363         && (is->iformat->flags & AVFMT_TS_DISCONT) && ifile->last_ts != AV_NOPTS_VALUE) {
3364         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3365         int64_t delta   = pkt_dts - ifile->last_ts;
3366         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3367             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3368                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)){
3369             ifile->ts_offset -= delta;
3370             av_log(NULL, AV_LOG_DEBUG,
3371                    "Inter stream timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3372                    delta, ifile->ts_offset);
3373             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3374             if (pkt.pts != AV_NOPTS_VALUE)
3375                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3376         }
3377     }
3378
3379     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
3380         !copy_ts) {
3381         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3382         int64_t delta   = pkt_dts - ist->next_dts;
3383         if (is->iformat->flags & AVFMT_TS_DISCONT) {
3384             if (delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3385                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3386                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3387                 pkt_dts + AV_TIME_BASE/10 < FFMAX(ist->pts, ist->dts)) {
3388                 ifile->ts_offset -= delta;
3389                 av_log(NULL, AV_LOG_DEBUG,
3390                        "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3391                        delta, ifile->ts_offset);
3392                 pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3393                 if (pkt.pts != AV_NOPTS_VALUE)
3394                     pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3395             }
3396         } else {
3397             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3398                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)) {
3399                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3400                 pkt.dts = AV_NOPTS_VALUE;
3401             }
3402             if (pkt.pts != AV_NOPTS_VALUE){
3403                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3404                 delta   = pkt_pts - ist->next_dts;
3405                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3406                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)) {
3407                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3408                     pkt.pts = AV_NOPTS_VALUE;
3409                 }
3410             }
3411         }
3412     }
3413
3414     if (pkt.dts != AV_NOPTS_VALUE)
3415         ifile->last_ts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3416
3417     if (debug_ts) {
3418         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",
3419                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
3420                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3421                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3422                av_ts2str(input_files[ist->file_index]->ts_offset),
3423                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3424     }
3425
3426     sub2video_heartbeat(ist, pkt.pts);
3427
3428     ret = output_packet(ist, &pkt);
3429     if (ret < 0) {
3430         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
3431                ist->file_index, ist->st->index, av_err2str(ret));
3432         if (exit_on_error)
3433             exit_program(1);
3434     }
3435
3436 discard_packet:
3437     av_free_packet(&pkt);
3438
3439     return 0;
3440 }
3441
3442 /**
3443  * Perform a step of transcoding for the specified filter graph.
3444  *
3445  * @param[in]  graph     filter graph to consider
3446  * @param[out] best_ist  input stream where a frame would allow to continue
3447  * @return  0 for success, <0 for error
3448  */
3449 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
3450 {
3451     int i, ret;
3452     int nb_requests, nb_requests_max = 0;
3453     InputFilter *ifilter;
3454     InputStream *ist;
3455
3456     *best_ist = NULL;
3457     ret = avfilter_graph_request_oldest(graph->graph);
3458     if (ret >= 0)
3459         return reap_filters();
3460
3461     if (ret == AVERROR_EOF) {
3462         ret = reap_filters();
3463         for (i = 0; i < graph->nb_outputs; i++)
3464             close_output_stream(graph->outputs[i]->ost);
3465         return ret;
3466     }
3467     if (ret != AVERROR(EAGAIN))
3468         return ret;
3469
3470     for (i = 0; i < graph->nb_inputs; i++) {
3471         ifilter = graph->inputs[i];
3472         ist = ifilter->ist;
3473         if (input_files[ist->file_index]->eagain ||
3474             input_files[ist->file_index]->eof_reached)
3475             continue;
3476         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
3477         if (nb_requests > nb_requests_max) {
3478             nb_requests_max = nb_requests;
3479             *best_ist = ist;
3480         }
3481     }
3482
3483     if (!*best_ist)
3484         for (i = 0; i < graph->nb_outputs; i++)
3485             graph->outputs[i]->ost->unavailable = 1;
3486
3487     return 0;
3488 }
3489
3490 /**
3491  * Run a single step of transcoding.
3492  *
3493  * @return  0 for success, <0 for error
3494  */
3495 static int transcode_step(void)
3496 {
3497     OutputStream *ost;
3498     InputStream  *ist;
3499     int ret;
3500
3501     ost = choose_output();
3502     if (!ost) {
3503         if (got_eagain()) {
3504             reset_eagain();
3505             av_usleep(10000);
3506             return 0;
3507         }
3508         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
3509         return AVERROR_EOF;
3510     }
3511
3512     if (ost->filter) {
3513         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
3514             return ret;
3515         if (!ist)
3516             return 0;
3517     } else {
3518         av_assert0(ost->source_index >= 0);
3519         ist = input_streams[ost->source_index];
3520     }
3521
3522     ret = process_input(ist->file_index);
3523     if (ret == AVERROR(EAGAIN)) {
3524         if (input_files[ist->file_index]->eagain)
3525             ost->unavailable = 1;
3526         return 0;
3527     }
3528     if (ret < 0)
3529         return ret == AVERROR_EOF ? 0 : ret;
3530
3531     return reap_filters();
3532 }
3533
3534 /*
3535  * The following code is the main loop of the file converter
3536  */
3537 static int transcode(void)
3538 {
3539     int ret, i;
3540     AVFormatContext *os;
3541     OutputStream *ost;
3542     InputStream *ist;
3543     int64_t timer_start;
3544
3545     ret = transcode_init();
3546     if (ret < 0)
3547         goto fail;
3548
3549     if (stdin_interaction) {
3550         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3551     }
3552
3553     timer_start = av_gettime();
3554
3555 #if HAVE_PTHREADS
3556     if ((ret = init_input_threads()) < 0)
3557         goto fail;
3558 #endif
3559
3560     while (!received_sigterm) {
3561         int64_t cur_time= av_gettime();
3562
3563         /* if 'q' pressed, exits */
3564         if (stdin_interaction)
3565             if (check_keyboard_interaction(cur_time) < 0)
3566                 break;
3567
3568         /* check if there's any stream where output is still needed */
3569         if (!need_output()) {
3570             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3571             break;
3572         }
3573
3574         ret = transcode_step();
3575         if (ret < 0) {
3576             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
3577                 continue;
3578
3579             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
3580             break;
3581         }
3582
3583         /* dump report by using the output first video and audio streams */
3584         print_report(0, timer_start, cur_time);
3585     }
3586 #if HAVE_PTHREADS
3587     free_input_threads();
3588 #endif
3589
3590     /* at the end of stream, we must flush the decoder buffers */
3591     for (i = 0; i < nb_input_streams; i++) {
3592         ist = input_streams[i];
3593         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3594             output_packet(ist, NULL);
3595         }
3596     }
3597     flush_encoders();
3598
3599     term_exit();
3600
3601     /* write the trailer if needed and close file */
3602     for (i = 0; i < nb_output_files; i++) {
3603         os = output_files[i]->ctx;
3604         av_write_trailer(os);
3605     }
3606
3607     /* dump report by using the first video and audio streams */
3608     print_report(1, timer_start, av_gettime());
3609
3610     /* close each encoder */
3611     for (i = 0; i < nb_output_streams; i++) {
3612         ost = output_streams[i];
3613         if (ost->encoding_needed) {
3614             av_freep(&ost->st->codec->stats_in);
3615             avcodec_close(ost->st->codec);
3616         }
3617     }
3618
3619     /* close each decoder */
3620     for (i = 0; i < nb_input_streams; i++) {
3621         ist = input_streams[i];
3622         if (ist->decoding_needed) {
3623             avcodec_close(ist->st->codec);
3624             if (ist->hwaccel_uninit)
3625                 ist->hwaccel_uninit(ist->st->codec);
3626         }
3627     }
3628
3629     /* finished ! */
3630     ret = 0;
3631
3632  fail:
3633 #if HAVE_PTHREADS
3634     free_input_threads();
3635 #endif
3636
3637     if (output_streams) {
3638         for (i = 0; i < nb_output_streams; i++) {
3639             ost = output_streams[i];
3640             if (ost) {
3641                 if (ost->stream_copy)
3642                     av_freep(&ost->st->codec->extradata);
3643                 if (ost->logfile) {
3644                     fclose(ost->logfile);
3645                     ost->logfile = NULL;
3646                 }
3647                 av_freep(&ost->st->codec->subtitle_header);
3648                 av_freep(&ost->forced_kf_pts);
3649                 av_freep(&ost->apad);
3650                 av_dict_free(&ost->opts);
3651                 av_dict_free(&ost->swr_opts);
3652                 av_dict_free(&ost->resample_opts);
3653             }
3654         }
3655     }
3656     return ret;
3657 }
3658
3659
3660 static int64_t getutime(void)
3661 {
3662 #if HAVE_GETRUSAGE
3663     struct rusage rusage;
3664
3665     getrusage(RUSAGE_SELF, &rusage);
3666     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3667 #elif HAVE_GETPROCESSTIMES
3668     HANDLE proc;
3669     FILETIME c, e, k, u;
3670     proc = GetCurrentProcess();
3671     GetProcessTimes(proc, &c, &e, &k, &u);
3672     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3673 #else
3674     return av_gettime();
3675 #endif
3676 }
3677
3678 static int64_t getmaxrss(void)
3679 {
3680 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3681     struct rusage rusage;
3682     getrusage(RUSAGE_SELF, &rusage);
3683     return (int64_t)rusage.ru_maxrss * 1024;
3684 #elif HAVE_GETPROCESSMEMORYINFO
3685     HANDLE proc;
3686     PROCESS_MEMORY_COUNTERS memcounters;
3687     proc = GetCurrentProcess();
3688     memcounters.cb = sizeof(memcounters);
3689     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3690     return memcounters.PeakPagefileUsage;
3691 #else
3692     return 0;
3693 #endif
3694 }
3695
3696 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3697 {
3698 }
3699
3700 int main(int argc, char **argv)
3701 {
3702     int ret;
3703     int64_t ti;
3704
3705     register_exit(ffmpeg_cleanup);
3706
3707     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3708
3709     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3710     parse_loglevel(argc, argv, options);
3711
3712     if(argc>1 && !strcmp(argv[1], "-d")){
3713         run_as_daemon=1;
3714         av_log_set_callback(log_callback_null);
3715         argc--;
3716         argv++;
3717     }
3718
3719     avcodec_register_all();
3720 #if CONFIG_AVDEVICE
3721     avdevice_register_all();
3722 #endif
3723     avfilter_register_all();
3724     av_register_all();
3725     avformat_network_init();
3726
3727     show_banner(argc, argv, options);
3728
3729     term_init();
3730
3731     /* parse options and open all input/output files */
3732     ret = ffmpeg_parse_options(argc, argv);
3733     if (ret < 0)
3734         exit_program(1);
3735
3736     if (nb_output_files <= 0 && nb_input_files == 0) {
3737         show_usage();
3738         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3739         exit_program(1);
3740     }
3741
3742     /* file converter / grab */
3743     if (nb_output_files <= 0) {
3744         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3745         exit_program(1);
3746     }
3747
3748 //     if (nb_input_files == 0) {
3749 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3750 //         exit_program(1);
3751 //     }
3752
3753     current_time = ti = getutime();
3754     if (transcode() < 0)
3755         exit_program(1);
3756     ti = getutime() - ti;
3757     if (do_benchmark) {
3758         printf("bench: utime=%0.3fs\n", ti / 1000000.0);
3759     }
3760     av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" frames successfully decoded, %"PRIu64" decoding errors\n",
3761            decode_error_stat[0], decode_error_stat[1]);
3762     if ((decode_error_stat[0] + decode_error_stat[1]) * max_error_rate < decode_error_stat[1])
3763         exit_program(69);
3764
3765     exit_program(received_nb_signals ? 255 : main_return_code);
3766     return main_return_code;
3767 }