86af9bbc1fad8b38c482a14c09de83f3fc5a7a6f
[ffmpeg.git] / ffmpeg.c
1 /*
2  * Copyright (c) 2000-2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * multimedia converter based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <ctype.h>
28 #include <string.h>
29 #include <math.h>
30 #include <stdlib.h>
31 #include <errno.h>
32 #include <limits.h>
33 #if HAVE_ISATTY
34 #if HAVE_IO_H
35 #include <io.h>
36 #endif
37 #if HAVE_UNISTD_H
38 #include <unistd.h>
39 #endif
40 #endif
41 #include "libavformat/avformat.h"
42 #include "libavdevice/avdevice.h"
43 #include "libswscale/swscale.h"
44 #include "libswresample/swresample.h"
45 #include "libavutil/opt.h"
46 #include "libavutil/channel_layout.h"
47 #include "libavutil/parseutils.h"
48 #include "libavutil/samplefmt.h"
49 #include "libavutil/colorspace.h"
50 #include "libavutil/fifo.h"
51 #include "libavutil/intreadwrite.h"
52 #include "libavutil/dict.h"
53 #include "libavutil/mathematics.h"
54 #include "libavutil/pixdesc.h"
55 #include "libavutil/avstring.h"
56 #include "libavutil/libm.h"
57 #include "libavutil/imgutils.h"
58 #include "libavutil/timestamp.h"
59 #include "libavutil/bprint.h"
60 #include "libavutil/time.h"
61 #include "libavformat/os_support.h"
62
63 #include "libavformat/ffm.h" // not public API
64
65 # include "libavfilter/avcodec.h"
66 # include "libavfilter/avfilter.h"
67 # include "libavfilter/buffersrc.h"
68 # include "libavfilter/buffersink.h"
69
70 #if HAVE_SYS_RESOURCE_H
71 #include <sys/time.h>
72 #include <sys/types.h>
73 #include <sys/resource.h>
74 #elif HAVE_GETPROCESSTIMES
75 #include <windows.h>
76 #endif
77 #if HAVE_GETPROCESSMEMORYINFO
78 #include <windows.h>
79 #include <psapi.h>
80 #endif
81
82 #if HAVE_SYS_SELECT_H
83 #include <sys/select.h>
84 #endif
85
86 #if HAVE_TERMIOS_H
87 #include <fcntl.h>
88 #include <sys/ioctl.h>
89 #include <sys/time.h>
90 #include <termios.h>
91 #elif HAVE_KBHIT
92 #include <conio.h>
93 #endif
94
95 #if HAVE_PTHREADS
96 #include <pthread.h>
97 #endif
98
99 #include <time.h>
100
101 #include "ffmpeg.h"
102 #include "cmdutils.h"
103
104 #include "libavutil/avassert.h"
105
106 const char program_name[] = "ffmpeg";
107 const int program_birth_year = 2000;
108
109 static FILE *vstats_file;
110
111 const char *const forced_keyframes_const_names[] = {
112     "n",
113     "n_forced",
114     "prev_forced_n",
115     "prev_forced_t",
116     "t",
117     NULL
118 };
119
120 static void do_video_stats(OutputStream *ost, int frame_size);
121 static int64_t getutime(void);
122 static int64_t getmaxrss(void);
123
124 static int run_as_daemon  = 0;
125 static int64_t video_size = 0;
126 static int64_t audio_size = 0;
127 static int64_t subtitle_size = 0;
128 static int64_t extra_size = 0;
129 static int nb_frames_dup = 0;
130 static int nb_frames_drop = 0;
131 static int64_t decode_error_stat[2];
132
133 static int current_time;
134 AVIOContext *progress_avio = NULL;
135
136 static uint8_t *subtitle_out;
137
138 #if HAVE_PTHREADS
139 /* signal to input threads that they should exit; set by the main thread */
140 static int transcoding_finished;
141 #endif
142
143 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
144
145 InputStream **input_streams = NULL;
146 int        nb_input_streams = 0;
147 InputFile   **input_files   = NULL;
148 int        nb_input_files   = 0;
149
150 OutputStream **output_streams = NULL;
151 int         nb_output_streams = 0;
152 OutputFile   **output_files   = NULL;
153 int         nb_output_files   = 0;
154
155 FilterGraph **filtergraphs;
156 int        nb_filtergraphs;
157
158 #if HAVE_TERMIOS_H
159
160 /* init terminal so that we can grab keys */
161 static struct termios oldtty;
162 static int restore_tty;
163 #endif
164
165
166 /* sub2video hack:
167    Convert subtitles to video with alpha to insert them in filter graphs.
168    This is a temporary solution until libavfilter gets real subtitles support.
169  */
170
171 static int sub2video_get_blank_frame(InputStream *ist)
172 {
173     int ret;
174     AVFrame *frame = ist->sub2video.frame;
175
176     av_frame_unref(frame);
177     ist->sub2video.frame->width  = ist->sub2video.w;
178     ist->sub2video.frame->height = ist->sub2video.h;
179     ist->sub2video.frame->format = AV_PIX_FMT_RGB32;
180     if ((ret = av_frame_get_buffer(frame, 32)) < 0)
181         return ret;
182     memset(frame->data[0], 0, frame->height * frame->linesize[0]);
183     return 0;
184 }
185
186 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
187                                 AVSubtitleRect *r)
188 {
189     uint32_t *pal, *dst2;
190     uint8_t *src, *src2;
191     int x, y;
192
193     if (r->type != SUBTITLE_BITMAP) {
194         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
195         return;
196     }
197     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
198         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
199         return;
200     }
201
202     dst += r->y * dst_linesize + r->x * 4;
203     src = r->pict.data[0];
204     pal = (uint32_t *)r->pict.data[1];
205     for (y = 0; y < r->h; y++) {
206         dst2 = (uint32_t *)dst;
207         src2 = src;
208         for (x = 0; x < r->w; x++)
209             *(dst2++) = pal[*(src2++)];
210         dst += dst_linesize;
211         src += r->pict.linesize[0];
212     }
213 }
214
215 static void sub2video_push_ref(InputStream *ist, int64_t pts)
216 {
217     AVFrame *frame = ist->sub2video.frame;
218     int i;
219
220     av_assert1(frame->data[0]);
221     ist->sub2video.last_pts = frame->pts = pts;
222     for (i = 0; i < ist->nb_filters; i++)
223         av_buffersrc_add_frame_flags(ist->filters[i]->filter, frame,
224                                      AV_BUFFERSRC_FLAG_KEEP_REF |
225                                      AV_BUFFERSRC_FLAG_PUSH);
226 }
227
228 static void sub2video_update(InputStream *ist, AVSubtitle *sub)
229 {
230     int w = ist->sub2video.w, h = ist->sub2video.h;
231     AVFrame *frame = ist->sub2video.frame;
232     int8_t *dst;
233     int     dst_linesize;
234     int num_rects, i;
235     int64_t pts, end_pts;
236
237     if (!frame)
238         return;
239     if (sub) {
240         pts       = av_rescale_q(sub->pts + sub->start_display_time * 1000,
241                                  AV_TIME_BASE_Q, ist->st->time_base);
242         end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000,
243                                  AV_TIME_BASE_Q, ist->st->time_base);
244         num_rects = sub->num_rects;
245     } else {
246         pts       = ist->sub2video.end_pts;
247         end_pts   = INT64_MAX;
248         num_rects = 0;
249     }
250     if (sub2video_get_blank_frame(ist) < 0) {
251         av_log(ist->st->codec, AV_LOG_ERROR,
252                "Impossible to get a blank canvas.\n");
253         return;
254     }
255     dst          = frame->data    [0];
256     dst_linesize = frame->linesize[0];
257     for (i = 0; i < num_rects; i++)
258         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
259     sub2video_push_ref(ist, pts);
260     ist->sub2video.end_pts = end_pts;
261 }
262
263 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
264 {
265     InputFile *infile = input_files[ist->file_index];
266     int i, j, nb_reqs;
267     int64_t pts2;
268
269     /* When a frame is read from a file, examine all sub2video streams in
270        the same file and send the sub2video frame again. Otherwise, decoded
271        video frames could be accumulating in the filter graph while a filter
272        (possibly overlay) is desperately waiting for a subtitle frame. */
273     for (i = 0; i < infile->nb_streams; i++) {
274         InputStream *ist2 = input_streams[infile->ist_index + i];
275         if (!ist2->sub2video.frame)
276             continue;
277         /* subtitles seem to be usually muxed ahead of other streams;
278            if not, substracting a larger time here is necessary */
279         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
280         /* do not send the heartbeat frame if the subtitle is already ahead */
281         if (pts2 <= ist2->sub2video.last_pts)
282             continue;
283         if (pts2 >= ist2->sub2video.end_pts || !ist2->sub2video.frame->data[0])
284             sub2video_update(ist2, NULL);
285         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
286             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
287         if (nb_reqs)
288             sub2video_push_ref(ist2, pts2);
289     }
290 }
291
292 static void sub2video_flush(InputStream *ist)
293 {
294     int i;
295
296     for (i = 0; i < ist->nb_filters; i++)
297         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
298 }
299
300 /* end of sub2video hack */
301
302 void term_exit(void)
303 {
304     av_log(NULL, AV_LOG_QUIET, "%s", "");
305 #if HAVE_TERMIOS_H
306     if(restore_tty)
307         tcsetattr (0, TCSANOW, &oldtty);
308 #endif
309 }
310
311 static volatile int received_sigterm = 0;
312 static volatile int received_nb_signals = 0;
313
314 static void
315 sigterm_handler(int sig)
316 {
317     received_sigterm = sig;
318     received_nb_signals++;
319     term_exit();
320     if(received_nb_signals > 3)
321         exit(123);
322 }
323
324 void term_init(void)
325 {
326 #if HAVE_TERMIOS_H
327     if(!run_as_daemon){
328         struct termios tty;
329         int istty = 1;
330 #if HAVE_ISATTY
331         istty = isatty(0) && isatty(2);
332 #endif
333         if (istty && tcgetattr (0, &tty) == 0) {
334             oldtty = tty;
335             restore_tty = 1;
336             atexit(term_exit);
337
338             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
339                              |INLCR|IGNCR|ICRNL|IXON);
340             tty.c_oflag |= OPOST;
341             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
342             tty.c_cflag &= ~(CSIZE|PARENB);
343             tty.c_cflag |= CS8;
344             tty.c_cc[VMIN] = 1;
345             tty.c_cc[VTIME] = 0;
346
347             tcsetattr (0, TCSANOW, &tty);
348         }
349         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
350     }
351 #endif
352     avformat_network_deinit();
353
354     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
355     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
356 #ifdef SIGXCPU
357     signal(SIGXCPU, sigterm_handler);
358 #endif
359 }
360
361 /* read a key without blocking */
362 static int read_key(void)
363 {
364     unsigned char ch;
365 #if HAVE_TERMIOS_H
366     int n = 1;
367     struct timeval tv;
368     fd_set rfds;
369
370     FD_ZERO(&rfds);
371     FD_SET(0, &rfds);
372     tv.tv_sec = 0;
373     tv.tv_usec = 0;
374     n = select(1, &rfds, NULL, NULL, &tv);
375     if (n > 0) {
376         n = read(0, &ch, 1);
377         if (n == 1)
378             return ch;
379
380         return n;
381     }
382 #elif HAVE_KBHIT
383 #    if HAVE_PEEKNAMEDPIPE
384     static int is_pipe;
385     static HANDLE input_handle;
386     DWORD dw, nchars;
387     if(!input_handle){
388         input_handle = GetStdHandle(STD_INPUT_HANDLE);
389         is_pipe = !GetConsoleMode(input_handle, &dw);
390     }
391
392     if (stdin->_cnt > 0) {
393         read(0, &ch, 1);
394         return ch;
395     }
396     if (is_pipe) {
397         /* When running under a GUI, you will end here. */
398         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
399             // input pipe may have been closed by the program that ran ffmpeg
400             return -1;
401         }
402         //Read it
403         if(nchars != 0) {
404             read(0, &ch, 1);
405             return ch;
406         }else{
407             return -1;
408         }
409     }
410 #    endif
411     if(kbhit())
412         return(getch());
413 #endif
414     return -1;
415 }
416
417 static int decode_interrupt_cb(void *ctx)
418 {
419     return received_nb_signals > 1;
420 }
421
422 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
423
424 static void exit_program(void)
425 {
426     int i, j;
427
428     if (do_benchmark) {
429         int maxrss = getmaxrss() / 1024;
430         printf("bench: maxrss=%ikB\n", maxrss);
431     }
432
433     for (i = 0; i < nb_filtergraphs; i++) {
434         avfilter_graph_free(&filtergraphs[i]->graph);
435         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
436             av_freep(&filtergraphs[i]->inputs[j]->name);
437             av_freep(&filtergraphs[i]->inputs[j]);
438         }
439         av_freep(&filtergraphs[i]->inputs);
440         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
441             av_freep(&filtergraphs[i]->outputs[j]->name);
442             av_freep(&filtergraphs[i]->outputs[j]);
443         }
444         av_freep(&filtergraphs[i]->outputs);
445         av_freep(&filtergraphs[i]->graph_desc);
446         av_freep(&filtergraphs[i]);
447     }
448     av_freep(&filtergraphs);
449
450     av_freep(&subtitle_out);
451
452     /* close files */
453     for (i = 0; i < nb_output_files; i++) {
454         AVFormatContext *s = output_files[i]->ctx;
455         if (s && !(s->oformat->flags & AVFMT_NOFILE) && s->pb)
456             avio_close(s->pb);
457         avformat_free_context(s);
458         av_dict_free(&output_files[i]->opts);
459         av_freep(&output_files[i]);
460     }
461     for (i = 0; i < nb_output_streams; i++) {
462         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
463         while (bsfc) {
464             AVBitStreamFilterContext *next = bsfc->next;
465             av_bitstream_filter_close(bsfc);
466             bsfc = next;
467         }
468         output_streams[i]->bitstream_filters = NULL;
469         avcodec_free_frame(&output_streams[i]->filtered_frame);
470
471         av_freep(&output_streams[i]->forced_keyframes);
472         av_expr_free(output_streams[i]->forced_keyframes_pexpr);
473         av_freep(&output_streams[i]->avfilter);
474         av_freep(&output_streams[i]->logfile_prefix);
475         av_freep(&output_streams[i]);
476     }
477     for (i = 0; i < nb_input_files; i++) {
478         avformat_close_input(&input_files[i]->ctx);
479         av_freep(&input_files[i]);
480     }
481     for (i = 0; i < nb_input_streams; i++) {
482         av_frame_free(&input_streams[i]->decoded_frame);
483         av_frame_free(&input_streams[i]->filter_frame);
484         av_dict_free(&input_streams[i]->opts);
485         avsubtitle_free(&input_streams[i]->prev_sub.subtitle);
486         av_frame_free(&input_streams[i]->sub2video.frame);
487         av_freep(&input_streams[i]->filters);
488         av_freep(&input_streams[i]);
489     }
490
491     if (vstats_file)
492         fclose(vstats_file);
493     av_free(vstats_filename);
494
495     av_freep(&input_streams);
496     av_freep(&input_files);
497     av_freep(&output_streams);
498     av_freep(&output_files);
499
500     uninit_opts();
501
502     avformat_network_deinit();
503
504     if (received_sigterm) {
505         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
506                (int) received_sigterm);
507     }
508 }
509
510 void assert_avoptions(AVDictionary *m)
511 {
512     AVDictionaryEntry *t;
513     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
514         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
515         exit(1);
516     }
517 }
518
519 static void abort_codec_experimental(AVCodec *c, int encoder)
520 {
521     exit(1);
522 }
523
524 static void update_benchmark(const char *fmt, ...)
525 {
526     if (do_benchmark_all) {
527         int64_t t = getutime();
528         va_list va;
529         char buf[1024];
530
531         if (fmt) {
532             va_start(va, fmt);
533             vsnprintf(buf, sizeof(buf), fmt, va);
534             va_end(va);
535             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
536         }
537         current_time = t;
538     }
539 }
540
541 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
542 {
543     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
544     AVCodecContext          *avctx = ost->st->codec;
545     int ret;
546
547     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
548         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
549         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
550
551     /*
552      * Audio encoders may split the packets --  #frames in != #packets out.
553      * But there is no reordering, so we can limit the number of output packets
554      * by simply dropping them here.
555      * Counting encoded video frames needs to be done separately because of
556      * reordering, see do_video_out()
557      */
558     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
559         if (ost->frame_number >= ost->max_frames) {
560             av_free_packet(pkt);
561             return;
562         }
563         ost->frame_number++;
564     }
565
566     while (bsfc) {
567         AVPacket new_pkt = *pkt;
568         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
569                                            &new_pkt.data, &new_pkt.size,
570                                            pkt->data, pkt->size,
571                                            pkt->flags & AV_PKT_FLAG_KEY);
572         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
573             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
574             if(t) {
575                 memcpy(t, new_pkt.data, new_pkt.size);
576                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
577                 new_pkt.data = t;
578                 new_pkt.buf = NULL;
579                 a = 1;
580             } else
581                 a = AVERROR(ENOMEM);
582         }
583         if (a > 0) {
584             av_free_packet(pkt);
585             new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
586                                            av_buffer_default_free, NULL, 0);
587             if (!new_pkt.buf)
588                 exit(1);
589         } else if (a < 0) {
590             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
591                    bsfc->filter->name, pkt->stream_index,
592                    avctx->codec ? avctx->codec->name : "copy");
593             print_error("", a);
594             if (exit_on_error)
595                 exit(1);
596         }
597         *pkt = new_pkt;
598
599         bsfc = bsfc->next;
600     }
601
602     if ((avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) && pkt->dts != AV_NOPTS_VALUE) {
603         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
604         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
605             av_log(s, max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG,
606                    "st:%d PTS: %"PRId64" DTS: %"PRId64" < %"PRId64" invalid, clipping\n", pkt->stream_index, pkt->pts, pkt->dts, max);
607             if(pkt->pts >= pkt->dts)
608                 pkt->pts = FFMAX(pkt->pts, max);
609             pkt->dts = max;
610         }
611     }
612
613     if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS) &&
614         ost->last_mux_dts != AV_NOPTS_VALUE &&
615         pkt->dts < ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT)) {
616         av_log(NULL, AV_LOG_WARNING, "Non-monotonous DTS in output stream "
617                "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
618                ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
619         if (exit_on_error) {
620             av_log(NULL, AV_LOG_FATAL, "aborting.\n");
621             exit(1);
622         }
623         av_log(NULL, AV_LOG_WARNING, "changing to %"PRId64". This may result "
624                "in incorrect timestamps in the output file.\n",
625                ost->last_mux_dts + 1);
626         pkt->dts = ost->last_mux_dts + 1;
627         if (pkt->pts != AV_NOPTS_VALUE)
628             pkt->pts = FFMAX(pkt->pts, pkt->dts);
629     }
630     ost->last_mux_dts = pkt->dts;
631
632     pkt->stream_index = ost->index;
633
634     if (debug_ts) {
635         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
636                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
637                 av_get_media_type_string(ost->st->codec->codec_type),
638                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
639                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
640                 pkt->size
641               );
642     }
643
644     ret = av_interleaved_write_frame(s, pkt);
645     if (ret < 0) {
646         print_error("av_interleaved_write_frame()", ret);
647         exit(1);
648     }
649 }
650
651 static void close_output_stream(OutputStream *ost)
652 {
653     OutputFile *of = output_files[ost->file_index];
654
655     ost->finished = 1;
656     if (of->shortest) {
657         int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, AV_TIME_BASE_Q);
658         of->recording_time = FFMIN(of->recording_time, end);
659     }
660 }
661
662 static int check_recording_time(OutputStream *ost)
663 {
664     OutputFile *of = output_files[ost->file_index];
665
666     if (of->recording_time != INT64_MAX &&
667         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
668                       AV_TIME_BASE_Q) >= 0) {
669         close_output_stream(ost);
670         return 0;
671     }
672     return 1;
673 }
674
675 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
676                          AVFrame *frame)
677 {
678     AVCodecContext *enc = ost->st->codec;
679     AVPacket pkt;
680     int got_packet = 0;
681
682     av_init_packet(&pkt);
683     pkt.data = NULL;
684     pkt.size = 0;
685
686     if (!check_recording_time(ost))
687         return;
688
689     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
690         frame->pts = ost->sync_opts;
691     ost->sync_opts = frame->pts + frame->nb_samples;
692
693     av_assert0(pkt.size || !pkt.data);
694     update_benchmark(NULL);
695     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
696         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
697         exit(1);
698     }
699     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
700
701     if (got_packet) {
702         if (pkt.pts != AV_NOPTS_VALUE)
703             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
704         if (pkt.dts != AV_NOPTS_VALUE)
705             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
706         if (pkt.duration > 0)
707             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
708
709         if (debug_ts) {
710             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
711                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
712                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
713                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
714         }
715
716         audio_size += pkt.size;
717         write_frame(s, &pkt, ost);
718
719         av_free_packet(&pkt);
720     }
721 }
722
723 static void do_subtitle_out(AVFormatContext *s,
724                             OutputStream *ost,
725                             InputStream *ist,
726                             AVSubtitle *sub)
727 {
728     int subtitle_out_max_size = 1024 * 1024;
729     int subtitle_out_size, nb, i;
730     AVCodecContext *enc;
731     AVPacket pkt;
732     int64_t pts;
733
734     if (sub->pts == AV_NOPTS_VALUE) {
735         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
736         if (exit_on_error)
737             exit(1);
738         return;
739     }
740
741     enc = ost->st->codec;
742
743     if (!subtitle_out) {
744         subtitle_out = av_malloc(subtitle_out_max_size);
745     }
746
747     /* Note: DVB subtitle need one packet to draw them and one other
748        packet to clear them */
749     /* XXX: signal it in the codec context ? */
750     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
751         nb = 2;
752     else
753         nb = 1;
754
755     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
756     pts = sub->pts - output_files[ost->file_index]->start_time;
757     for (i = 0; i < nb; i++) {
758         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
759         if (!check_recording_time(ost))
760             return;
761
762         sub->pts = pts;
763         // start_display_time is required to be 0
764         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
765         sub->end_display_time  -= sub->start_display_time;
766         sub->start_display_time = 0;
767         if (i == 1)
768             sub->num_rects = 0;
769         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
770                                                     subtitle_out_max_size, sub);
771         if (subtitle_out_size < 0) {
772             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
773             exit(1);
774         }
775
776         av_init_packet(&pkt);
777         pkt.data = subtitle_out;
778         pkt.size = subtitle_out_size;
779         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
780         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
781         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
782             /* XXX: the pts correction is handled here. Maybe handling
783                it in the codec would be better */
784             if (i == 0)
785                 pkt.pts += 90 * sub->start_display_time;
786             else
787                 pkt.pts += 90 * sub->end_display_time;
788         }
789         subtitle_size += pkt.size;
790         write_frame(s, &pkt, ost);
791     }
792 }
793
794 static void do_video_out(AVFormatContext *s,
795                          OutputStream *ost,
796                          AVFrame *in_picture)
797 {
798     int ret, format_video_sync;
799     AVPacket pkt;
800     AVCodecContext *enc = ost->st->codec;
801     int nb_frames, i;
802     double sync_ipts, delta;
803     double duration = 0;
804     int frame_size = 0;
805     InputStream *ist = NULL;
806
807     if (ost->source_index >= 0)
808         ist = input_streams[ost->source_index];
809
810     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
811         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
812
813     sync_ipts = in_picture->pts;
814     delta = sync_ipts - ost->sync_opts + duration;
815
816     /* by default, we output a single frame */
817     nb_frames = 1;
818
819     format_video_sync = video_sync_method;
820     if (format_video_sync == VSYNC_AUTO)
821         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
822
823     switch (format_video_sync) {
824     case VSYNC_CFR:
825         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
826         if (delta < -1.1)
827             nb_frames = 0;
828         else if (delta > 1.1)
829             nb_frames = lrintf(delta);
830         break;
831     case VSYNC_VFR:
832         if (delta <= -0.6)
833             nb_frames = 0;
834         else if (delta > 0.6)
835             ost->sync_opts = lrint(sync_ipts);
836         break;
837     case VSYNC_DROP:
838     case VSYNC_PASSTHROUGH:
839         ost->sync_opts = lrint(sync_ipts);
840         break;
841     default:
842         av_assert0(0);
843     }
844
845     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
846     if (nb_frames == 0) {
847         nb_frames_drop++;
848         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
849         return;
850     } else if (nb_frames > 1) {
851         if (nb_frames > dts_error_threshold * 30) {
852             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
853             nb_frames_drop++;
854             return;
855         }
856         nb_frames_dup += nb_frames - 1;
857         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
858     }
859
860   /* duplicates frame if needed */
861   for (i = 0; i < nb_frames; i++) {
862     av_init_packet(&pkt);
863     pkt.data = NULL;
864     pkt.size = 0;
865
866     in_picture->pts = ost->sync_opts;
867
868 #if 1
869     if (!check_recording_time(ost))
870 #else
871     if (ost->frame_number >= ost->max_frames)
872 #endif
873         return;
874
875     if (s->oformat->flags & AVFMT_RAWPICTURE &&
876         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
877         /* raw pictures are written as AVPicture structure to
878            avoid any copies. We support temporarily the older
879            method. */
880         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
881         enc->coded_frame->top_field_first  = in_picture->top_field_first;
882         if (enc->coded_frame->interlaced_frame)
883             enc->field_order = enc->coded_frame->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
884         else
885             enc->field_order = AV_FIELD_PROGRESSIVE;
886         pkt.data   = (uint8_t *)in_picture;
887         pkt.size   =  sizeof(AVPicture);
888         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
889         pkt.flags |= AV_PKT_FLAG_KEY;
890
891         video_size += pkt.size;
892         write_frame(s, &pkt, ost);
893     } else {
894         int got_packet, forced_keyframe = 0;
895         double pts_time;
896
897         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME) &&
898             ost->top_field_first >= 0)
899             in_picture->top_field_first = !!ost->top_field_first;
900
901         if (in_picture->interlaced_frame) {
902             if (enc->codec->id == AV_CODEC_ID_MJPEG)
903                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
904             else
905                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
906         } else
907             enc->field_order = AV_FIELD_PROGRESSIVE;
908
909         in_picture->quality = ost->st->codec->global_quality;
910         if (!enc->me_threshold)
911             in_picture->pict_type = 0;
912
913         pts_time = in_picture->pts != AV_NOPTS_VALUE ?
914             in_picture->pts * av_q2d(enc->time_base) : NAN;
915         if (ost->forced_kf_index < ost->forced_kf_count &&
916             in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
917             ost->forced_kf_index++;
918             forced_keyframe = 1;
919         } else if (ost->forced_keyframes_pexpr) {
920             double res;
921             ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
922             res = av_expr_eval(ost->forced_keyframes_pexpr,
923                                ost->forced_keyframes_expr_const_values, NULL);
924             av_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
925                     ost->forced_keyframes_expr_const_values[FKF_N],
926                     ost->forced_keyframes_expr_const_values[FKF_N_FORCED],
927                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N],
928                     ost->forced_keyframes_expr_const_values[FKF_T],
929                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T],
930                     res);
931             if (res) {
932                 forced_keyframe = 1;
933                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] =
934                     ost->forced_keyframes_expr_const_values[FKF_N];
935                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] =
936                     ost->forced_keyframes_expr_const_values[FKF_T];
937                 ost->forced_keyframes_expr_const_values[FKF_N_FORCED] += 1;
938             }
939
940             ost->forced_keyframes_expr_const_values[FKF_N] += 1;
941         }
942         if (forced_keyframe) {
943             in_picture->pict_type = AV_PICTURE_TYPE_I;
944             av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
945         }
946
947         update_benchmark(NULL);
948         ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
949         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
950         if (ret < 0) {
951             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
952             exit(1);
953         }
954
955         if (got_packet) {
956             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
957                 pkt.pts = ost->sync_opts;
958
959             if (pkt.pts != AV_NOPTS_VALUE)
960                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
961             if (pkt.dts != AV_NOPTS_VALUE)
962                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
963
964             if (debug_ts) {
965                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
966                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
967                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
968                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
969             }
970
971             frame_size = pkt.size;
972             video_size += pkt.size;
973             write_frame(s, &pkt, ost);
974             av_free_packet(&pkt);
975
976             /* if two pass, output log */
977             if (ost->logfile && enc->stats_out) {
978                 fprintf(ost->logfile, "%s", enc->stats_out);
979             }
980         }
981     }
982     ost->sync_opts++;
983     /*
984      * For video, number of frames in == number of packets out.
985      * But there may be reordering, so we can't throw away frames on encoder
986      * flush, we need to limit them here, before they go into encoder.
987      */
988     ost->frame_number++;
989
990     if (vstats_filename && frame_size)
991         do_video_stats(ost, frame_size);
992   }
993 }
994
995 static double psnr(double d)
996 {
997     return -10.0 * log(d) / log(10.0);
998 }
999
1000 static void do_video_stats(OutputStream *ost, int frame_size)
1001 {
1002     AVCodecContext *enc;
1003     int frame_number;
1004     double ti1, bitrate, avg_bitrate;
1005
1006     /* this is executed just the first time do_video_stats is called */
1007     if (!vstats_file) {
1008         vstats_file = fopen(vstats_filename, "w");
1009         if (!vstats_file) {
1010             perror("fopen");
1011             exit(1);
1012         }
1013     }
1014
1015     enc = ost->st->codec;
1016     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1017         frame_number = ost->st->nb_frames;
1018         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1019         if (enc->flags&CODEC_FLAG_PSNR)
1020             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1021
1022         fprintf(vstats_file,"f_size= %6d ", frame_size);
1023         /* compute pts value */
1024         ti1 = ost->st->pts.val * av_q2d(enc->time_base);
1025         if (ti1 < 0.01)
1026             ti1 = 0.01;
1027
1028         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1029         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1030         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1031                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1032         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1033     }
1034 }
1035
1036 /**
1037  * Get and encode new output from any of the filtergraphs, without causing
1038  * activity.
1039  *
1040  * @return  0 for success, <0 for severe errors
1041  */
1042 static int reap_filters(void)
1043 {
1044     AVFrame *filtered_frame = NULL;
1045     int i;
1046     int64_t frame_pts;
1047
1048     /* Reap all buffers present in the buffer sinks */
1049     for (i = 0; i < nb_output_streams; i++) {
1050         OutputStream *ost = output_streams[i];
1051         OutputFile    *of = output_files[ost->file_index];
1052         int ret = 0;
1053
1054         if (!ost->filter)
1055             continue;
1056
1057         if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1058             return AVERROR(ENOMEM);
1059         } else
1060             avcodec_get_frame_defaults(ost->filtered_frame);
1061         filtered_frame = ost->filtered_frame;
1062
1063         while (1) {
1064             ret = av_buffersink_get_frame_flags(ost->filter->filter, filtered_frame,
1065                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1066             if (ret < 0) {
1067                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1068                     av_log(NULL, AV_LOG_WARNING,
1069                            "Error in av_buffersink_get_frame_flags(): %s\n", av_err2str(ret));
1070                 }
1071                 break;
1072             }
1073             frame_pts = AV_NOPTS_VALUE;
1074             if (filtered_frame->pts != AV_NOPTS_VALUE) {
1075                 filtered_frame->pts = frame_pts = av_rescale_q(filtered_frame->pts,
1076                                                 ost->filter->filter->inputs[0]->time_base,
1077                                                 ost->st->codec->time_base) -
1078                                     av_rescale_q(of->start_time,
1079                                                 AV_TIME_BASE_Q,
1080                                                 ost->st->codec->time_base);
1081             }
1082             //if (ost->source_index >= 0)
1083             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1084
1085
1086             switch (ost->filter->filter->inputs[0]->type) {
1087             case AVMEDIA_TYPE_VIDEO:
1088                 filtered_frame->pts = frame_pts;
1089                 if (!ost->frame_aspect_ratio.num)
1090                     ost->st->codec->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
1091
1092                 do_video_out(of->ctx, ost, filtered_frame);
1093                 break;
1094             case AVMEDIA_TYPE_AUDIO:
1095                 filtered_frame->pts = frame_pts;
1096                 if (!(ost->st->codec->codec->capabilities & CODEC_CAP_PARAM_CHANGE) &&
1097                     ost->st->codec->channels != av_frame_get_channels(filtered_frame)) {
1098                     av_log(NULL, AV_LOG_ERROR,
1099                            "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
1100                     break;
1101                 }
1102                 do_audio_out(of->ctx, ost, filtered_frame);
1103                 break;
1104             default:
1105                 // TODO support subtitle filters
1106                 av_assert0(0);
1107             }
1108
1109             av_frame_unref(filtered_frame);
1110         }
1111     }
1112
1113     return 0;
1114 }
1115
1116 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1117 {
1118     char buf[1024];
1119     AVBPrint buf_script;
1120     OutputStream *ost;
1121     AVFormatContext *oc;
1122     int64_t total_size;
1123     AVCodecContext *enc;
1124     int frame_number, vid, i;
1125     double bitrate;
1126     int64_t pts = INT64_MIN;
1127     static int64_t last_time = -1;
1128     static int qp_histogram[52];
1129     int hours, mins, secs, us;
1130
1131     if (!print_stats && !is_last_report && !progress_avio)
1132         return;
1133
1134     if (!is_last_report) {
1135         if (last_time == -1) {
1136             last_time = cur_time;
1137             return;
1138         }
1139         if ((cur_time - last_time) < 500000)
1140             return;
1141         last_time = cur_time;
1142     }
1143
1144
1145     oc = output_files[0]->ctx;
1146
1147     total_size = avio_size(oc->pb);
1148     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1149         total_size = avio_tell(oc->pb);
1150
1151     buf[0] = '\0';
1152     vid = 0;
1153     av_bprint_init(&buf_script, 0, 1);
1154     for (i = 0; i < nb_output_streams; i++) {
1155         float q = -1;
1156         ost = output_streams[i];
1157         enc = ost->st->codec;
1158         if (!ost->stream_copy && enc->coded_frame)
1159             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1160         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1161             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1162             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1163                        ost->file_index, ost->index, q);
1164         }
1165         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1166             float fps, t = (cur_time-timer_start) / 1000000.0;
1167
1168             frame_number = ost->frame_number;
1169             fps = t > 1 ? frame_number / t : 0;
1170             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1171                      frame_number, fps < 9.95, fps, q);
1172             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1173             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1174             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1175                        ost->file_index, ost->index, q);
1176             if (is_last_report)
1177                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1178             if (qp_hist) {
1179                 int j;
1180                 int qp = lrintf(q);
1181                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1182                     qp_histogram[qp]++;
1183                 for (j = 0; j < 32; j++)
1184                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1185             }
1186             if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1187                 int j;
1188                 double error, error_sum = 0;
1189                 double scale, scale_sum = 0;
1190                 double p;
1191                 char type[3] = { 'Y','U','V' };
1192                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1193                 for (j = 0; j < 3; j++) {
1194                     if (is_last_report) {
1195                         error = enc->error[j];
1196                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1197                     } else {
1198                         error = enc->coded_frame->error[j];
1199                         scale = enc->width * enc->height * 255.0 * 255.0;
1200                     }
1201                     if (j)
1202                         scale /= 4;
1203                     error_sum += error;
1204                     scale_sum += scale;
1205                     p = psnr(error / scale);
1206                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1207                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1208                                ost->file_index, ost->index, type[j] | 32, p);
1209                 }
1210                 p = psnr(error_sum / scale_sum);
1211                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1212                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1213                            ost->file_index, ost->index, p);
1214             }
1215             vid = 1;
1216         }
1217         /* compute min output value */
1218         if ((is_last_report || !ost->finished) && ost->st->pts.val != AV_NOPTS_VALUE)
1219             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1220                                           ost->st->time_base, AV_TIME_BASE_Q));
1221     }
1222
1223     secs = pts / AV_TIME_BASE;
1224     us = pts % AV_TIME_BASE;
1225     mins = secs / 60;
1226     secs %= 60;
1227     hours = mins / 60;
1228     mins %= 60;
1229
1230     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1231
1232     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1233                                  "size=N/A time=");
1234     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1235                                  "size=%8.0fkB time=", total_size / 1024.0);
1236     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1237              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1238              (100 * us) / AV_TIME_BASE);
1239     if (bitrate < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1240                               "bitrate=N/A");
1241     else             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1242                               "bitrate=%6.1fkbits/s", bitrate);
1243     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
1244     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1245     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1246     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1247                hours, mins, secs, us);
1248
1249     if (nb_frames_dup || nb_frames_drop)
1250         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1251                 nb_frames_dup, nb_frames_drop);
1252     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1253     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1254
1255     if (print_stats || is_last_report) {
1256         if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
1257             fprintf(stderr, "%s    \r", buf);
1258         } else
1259             av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1260
1261     fflush(stderr);
1262     }
1263
1264     if (progress_avio) {
1265         av_bprintf(&buf_script, "progress=%s\n",
1266                    is_last_report ? "end" : "continue");
1267         avio_write(progress_avio, buf_script.str,
1268                    FFMIN(buf_script.len, buf_script.size - 1));
1269         avio_flush(progress_avio);
1270         av_bprint_finalize(&buf_script, NULL);
1271         if (is_last_report) {
1272             avio_close(progress_avio);
1273             progress_avio = NULL;
1274         }
1275     }
1276
1277     if (is_last_report) {
1278         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1279         av_log(NULL, AV_LOG_INFO, "\n");
1280         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1281                video_size / 1024.0,
1282                audio_size / 1024.0,
1283                subtitle_size / 1024.0,
1284                extra_size / 1024.0,
1285                100.0 * (total_size - raw) / raw
1286         );
1287         if(video_size + audio_size + subtitle_size + extra_size == 0){
1288             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1289         }
1290     }
1291 }
1292
1293 static void flush_encoders(void)
1294 {
1295     int i, ret;
1296
1297     for (i = 0; i < nb_output_streams; i++) {
1298         OutputStream   *ost = output_streams[i];
1299         AVCodecContext *enc = ost->st->codec;
1300         AVFormatContext *os = output_files[ost->file_index]->ctx;
1301         int stop_encoding = 0;
1302
1303         if (!ost->encoding_needed)
1304             continue;
1305
1306         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1307             continue;
1308         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1309             continue;
1310
1311         for (;;) {
1312             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1313             const char *desc;
1314             int64_t *size;
1315
1316             switch (ost->st->codec->codec_type) {
1317             case AVMEDIA_TYPE_AUDIO:
1318                 encode = avcodec_encode_audio2;
1319                 desc   = "Audio";
1320                 size   = &audio_size;
1321                 break;
1322             case AVMEDIA_TYPE_VIDEO:
1323                 encode = avcodec_encode_video2;
1324                 desc   = "Video";
1325                 size   = &video_size;
1326                 break;
1327             default:
1328                 stop_encoding = 1;
1329             }
1330
1331             if (encode) {
1332                 AVPacket pkt;
1333                 int got_packet;
1334                 av_init_packet(&pkt);
1335                 pkt.data = NULL;
1336                 pkt.size = 0;
1337
1338                 update_benchmark(NULL);
1339                 ret = encode(enc, &pkt, NULL, &got_packet);
1340                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1341                 if (ret < 0) {
1342                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1343                     exit(1);
1344                 }
1345                 *size += pkt.size;
1346                 if (ost->logfile && enc->stats_out) {
1347                     fprintf(ost->logfile, "%s", enc->stats_out);
1348                 }
1349                 if (!got_packet) {
1350                     stop_encoding = 1;
1351                     break;
1352                 }
1353                 if (pkt.pts != AV_NOPTS_VALUE)
1354                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1355                 if (pkt.dts != AV_NOPTS_VALUE)
1356                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1357                 if (pkt.duration > 0)
1358                     pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1359                 write_frame(os, &pkt, ost);
1360                 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
1361                     do_video_stats(ost, pkt.size);
1362                 }
1363             }
1364
1365             if (stop_encoding)
1366                 break;
1367         }
1368     }
1369 }
1370
1371 /*
1372  * Check whether a packet from ist should be written into ost at this time
1373  */
1374 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1375 {
1376     OutputFile *of = output_files[ost->file_index];
1377     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1378
1379     if (ost->source_index != ist_index)
1380         return 0;
1381
1382     if (of->start_time && ist->pts < of->start_time)
1383         return 0;
1384
1385     return 1;
1386 }
1387
1388 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1389 {
1390     OutputFile *of = output_files[ost->file_index];
1391     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1392     AVPicture pict;
1393     AVPacket opkt;
1394
1395     av_init_packet(&opkt);
1396
1397     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1398         !ost->copy_initial_nonkeyframes)
1399         return;
1400
1401     if (!ost->frame_number && ist->pts < of->start_time &&
1402         !ost->copy_prior_start)
1403         return;
1404
1405     if (of->recording_time != INT64_MAX &&
1406         ist->pts >= of->recording_time + of->start_time) {
1407         close_output_stream(ost);
1408         return;
1409     }
1410
1411     /* force the input stream PTS */
1412     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1413         audio_size += pkt->size;
1414     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1415         video_size += pkt->size;
1416         ost->sync_opts++;
1417     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1418         subtitle_size += pkt->size;
1419     }
1420
1421     if (pkt->pts != AV_NOPTS_VALUE)
1422         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1423     else
1424         opkt.pts = AV_NOPTS_VALUE;
1425
1426     if (pkt->dts == AV_NOPTS_VALUE)
1427         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1428     else
1429         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1430     opkt.dts -= ost_tb_start_time;
1431
1432     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1433         int duration = av_get_audio_frame_duration(ist->st->codec, pkt->size);
1434         if(!duration)
1435             duration = ist->st->codec->frame_size;
1436         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1437                                                (AVRational){1, ist->st->codec->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
1438                                                ost->st->time_base) - ost_tb_start_time;
1439     }
1440
1441     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1442     opkt.flags    = pkt->flags;
1443
1444     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1445     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1446        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1447        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1448        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1449        ) {
1450         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY)) {
1451             opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1452             if (!opkt.buf)
1453                 exit(1);
1454         }
1455     } else {
1456         opkt.data = pkt->data;
1457         opkt.size = pkt->size;
1458     }
1459
1460     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1461         /* store AVPicture in AVPacket, as expected by the output format */
1462         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1463         opkt.data = (uint8_t *)&pict;
1464         opkt.size = sizeof(AVPicture);
1465         opkt.flags |= AV_PKT_FLAG_KEY;
1466     }
1467
1468     write_frame(of->ctx, &opkt, ost);
1469     ost->st->codec->frame_number++;
1470 }
1471
1472 int guess_input_channel_layout(InputStream *ist)
1473 {
1474     AVCodecContext *dec = ist->st->codec;
1475
1476     if (!dec->channel_layout) {
1477         char layout_name[256];
1478
1479         if (dec->channels > ist->guess_layout_max)
1480             return 0;
1481         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1482         if (!dec->channel_layout)
1483             return 0;
1484         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1485                                      dec->channels, dec->channel_layout);
1486         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1487                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1488     }
1489     return 1;
1490 }
1491
1492 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1493 {
1494     AVFrame *decoded_frame, *f;
1495     AVCodecContext *avctx = ist->st->codec;
1496     int i, ret, err = 0, resample_changed;
1497     AVRational decoded_frame_tb;
1498
1499     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1500         return AVERROR(ENOMEM);
1501     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1502         return AVERROR(ENOMEM);
1503     decoded_frame = ist->decoded_frame;
1504
1505     update_benchmark(NULL);
1506     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1507     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1508
1509     if (ret >= 0 && avctx->sample_rate <= 0) {
1510         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1511         ret = AVERROR_INVALIDDATA;
1512     }
1513
1514     if (*got_output || ret<0 || pkt->size)
1515         decode_error_stat[ret<0] ++;
1516
1517     if (!*got_output || ret < 0) {
1518         if (!pkt->size) {
1519             for (i = 0; i < ist->nb_filters; i++)
1520 #if 1
1521                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1522 #else
1523                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1524 #endif
1525         }
1526         return ret;
1527     }
1528
1529 #if 1
1530     /* increment next_dts to use for the case where the input stream does not
1531        have timestamps or there are multiple frames in the packet */
1532     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1533                      avctx->sample_rate;
1534     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1535                      avctx->sample_rate;
1536 #endif
1537
1538     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1539                        ist->resample_channels       != avctx->channels               ||
1540                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1541                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1542     if (resample_changed) {
1543         char layout1[64], layout2[64];
1544
1545         if (!guess_input_channel_layout(ist)) {
1546             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1547                    "layout for Input Stream #%d.%d\n", ist->file_index,
1548                    ist->st->index);
1549             exit(1);
1550         }
1551         decoded_frame->channel_layout = avctx->channel_layout;
1552
1553         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1554                                      ist->resample_channel_layout);
1555         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1556                                      decoded_frame->channel_layout);
1557
1558         av_log(NULL, AV_LOG_INFO,
1559                "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",
1560                ist->file_index, ist->st->index,
1561                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1562                ist->resample_channels, layout1,
1563                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1564                avctx->channels, layout2);
1565
1566         ist->resample_sample_fmt     = decoded_frame->format;
1567         ist->resample_sample_rate    = decoded_frame->sample_rate;
1568         ist->resample_channel_layout = decoded_frame->channel_layout;
1569         ist->resample_channels       = avctx->channels;
1570
1571         for (i = 0; i < nb_filtergraphs; i++)
1572             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1573                 FilterGraph *fg = filtergraphs[i];
1574                 int j;
1575                 if (configure_filtergraph(fg) < 0) {
1576                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1577                     exit(1);
1578                 }
1579                 for (j = 0; j < fg->nb_outputs; j++) {
1580                     OutputStream *ost = fg->outputs[j]->ost;
1581                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1582                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1583                         av_buffersink_set_frame_size(ost->filter->filter,
1584                                                      ost->st->codec->frame_size);
1585                 }
1586             }
1587     }
1588
1589     /* if the decoder provides a pts, use it instead of the last packet pts.
1590        the decoder could be delaying output by a packet or more. */
1591     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1592         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1593         decoded_frame_tb   = avctx->time_base;
1594     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1595         decoded_frame->pts = decoded_frame->pkt_pts;
1596         pkt->pts           = AV_NOPTS_VALUE;
1597         decoded_frame_tb   = ist->st->time_base;
1598     } else if (pkt->pts != AV_NOPTS_VALUE) {
1599         decoded_frame->pts = pkt->pts;
1600         pkt->pts           = AV_NOPTS_VALUE;
1601         decoded_frame_tb   = ist->st->time_base;
1602     }else {
1603         decoded_frame->pts = ist->dts;
1604         decoded_frame_tb   = AV_TIME_BASE_Q;
1605     }
1606     if (decoded_frame->pts != AV_NOPTS_VALUE)
1607         decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
1608                                               (AVRational){1, ist->st->codec->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
1609                                               (AVRational){1, ist->st->codec->sample_rate});
1610     for (i = 0; i < ist->nb_filters; i++) {
1611         if (i < ist->nb_filters - 1) {
1612             f = ist->filter_frame;
1613             err = av_frame_ref(f, decoded_frame);
1614             if (err < 0)
1615                 break;
1616         } else
1617             f = decoded_frame;
1618         err = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f,
1619                                      AV_BUFFERSRC_FLAG_PUSH);
1620         if (err < 0)
1621             break;
1622     }
1623     decoded_frame->pts = AV_NOPTS_VALUE;
1624
1625     av_frame_unref(ist->filter_frame);
1626     av_frame_unref(decoded_frame);
1627     return err < 0 ? err : ret;
1628 }
1629
1630 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1631 {
1632     AVFrame *decoded_frame, *f;
1633     void *buffer_to_free = NULL;
1634     int i, ret = 0, err = 0, resample_changed;
1635     int64_t best_effort_timestamp;
1636     AVRational *frame_sample_aspect;
1637
1638     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1639         return AVERROR(ENOMEM);
1640     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1641         return AVERROR(ENOMEM);
1642     decoded_frame = ist->decoded_frame;
1643     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1644
1645     update_benchmark(NULL);
1646     ret = avcodec_decode_video2(ist->st->codec,
1647                                 decoded_frame, got_output, pkt);
1648     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1649
1650     if (*got_output || ret<0 || pkt->size)
1651         decode_error_stat[ret<0] ++;
1652
1653     if (!*got_output || ret < 0) {
1654         if (!pkt->size) {
1655             for (i = 0; i < ist->nb_filters; i++)
1656 #if 1
1657                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1658 #else
1659                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1660 #endif
1661         }
1662         return ret;
1663     }
1664
1665     if(ist->top_field_first>=0)
1666         decoded_frame->top_field_first = ist->top_field_first;
1667
1668     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1669     if(best_effort_timestamp != AV_NOPTS_VALUE)
1670         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1671
1672     if (debug_ts) {
1673         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1674                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1675                 ist->st->index, av_ts2str(decoded_frame->pts),
1676                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1677                 best_effort_timestamp,
1678                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1679                 decoded_frame->key_frame, decoded_frame->pict_type);
1680     }
1681
1682     pkt->size = 0;
1683
1684     if (ist->st->sample_aspect_ratio.num)
1685         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1686
1687     resample_changed = ist->resample_width   != decoded_frame->width  ||
1688                        ist->resample_height  != decoded_frame->height ||
1689                        ist->resample_pix_fmt != decoded_frame->format;
1690     if (resample_changed) {
1691         av_log(NULL, AV_LOG_INFO,
1692                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1693                ist->file_index, ist->st->index,
1694                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1695                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1696
1697         ist->resample_width   = decoded_frame->width;
1698         ist->resample_height  = decoded_frame->height;
1699         ist->resample_pix_fmt = decoded_frame->format;
1700
1701         for (i = 0; i < nb_filtergraphs; i++) {
1702             if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
1703                 configure_filtergraph(filtergraphs[i]) < 0) {
1704                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1705                 exit(1);
1706             }
1707         }
1708     }
1709
1710     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1711     for (i = 0; i < ist->nb_filters; i++) {
1712         if (!frame_sample_aspect->num)
1713             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1714
1715         if (i < ist->nb_filters - 1) {
1716             f = ist->filter_frame;
1717             err = av_frame_ref(f, decoded_frame);
1718             if (err < 0)
1719                 break;
1720         } else
1721             f = decoded_frame;
1722         ret = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f, AV_BUFFERSRC_FLAG_PUSH);
1723         if (ret < 0) {
1724             av_log(NULL, AV_LOG_FATAL,
1725                    "Failed to inject frame into filter network: %s\n", av_err2str(ret));
1726             exit(1);
1727         }
1728     }
1729
1730     av_frame_unref(ist->filter_frame);
1731     av_frame_unref(decoded_frame);
1732     av_free(buffer_to_free);
1733     return err < 0 ? err : ret;
1734 }
1735
1736 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1737 {
1738     AVSubtitle subtitle;
1739     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1740                                           &subtitle, got_output, pkt);
1741
1742     if (*got_output || ret<0 || pkt->size)
1743         decode_error_stat[ret<0] ++;
1744
1745     if (ret < 0 || !*got_output) {
1746         if (!pkt->size)
1747             sub2video_flush(ist);
1748         return ret;
1749     }
1750
1751     if (ist->fix_sub_duration) {
1752         if (ist->prev_sub.got_output) {
1753             int end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1754                                  1000, AV_TIME_BASE);
1755             if (end < ist->prev_sub.subtitle.end_display_time) {
1756                 av_log(ist->st->codec, AV_LOG_DEBUG,
1757                        "Subtitle duration reduced from %d to %d\n",
1758                        ist->prev_sub.subtitle.end_display_time, end);
1759                 ist->prev_sub.subtitle.end_display_time = end;
1760             }
1761         }
1762         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1763         FFSWAP(int,        ret,         ist->prev_sub.ret);
1764         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1765     }
1766
1767     sub2video_update(ist, &subtitle);
1768
1769     if (!*got_output || !subtitle.num_rects)
1770         return ret;
1771
1772     for (i = 0; i < nb_output_streams; i++) {
1773         OutputStream *ost = output_streams[i];
1774
1775         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1776             continue;
1777
1778         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
1779     }
1780
1781     avsubtitle_free(&subtitle);
1782     return ret;
1783 }
1784
1785 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1786 static int output_packet(InputStream *ist, const AVPacket *pkt)
1787 {
1788     int ret = 0, i;
1789     int got_output = 0;
1790
1791     AVPacket avpkt;
1792     if (!ist->saw_first_ts) {
1793         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;
1794         ist->pts = 0;
1795         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1796             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1797             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1798         }
1799         ist->saw_first_ts = 1;
1800     }
1801
1802     if (ist->next_dts == AV_NOPTS_VALUE)
1803         ist->next_dts = ist->dts;
1804     if (ist->next_pts == AV_NOPTS_VALUE)
1805         ist->next_pts = ist->pts;
1806
1807     if (pkt == NULL) {
1808         /* EOF handling */
1809         av_init_packet(&avpkt);
1810         avpkt.data = NULL;
1811         avpkt.size = 0;
1812         goto handle_eof;
1813     } else {
1814         avpkt = *pkt;
1815     }
1816
1817     if (pkt->dts != AV_NOPTS_VALUE) {
1818         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1819         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1820             ist->next_pts = ist->pts = ist->dts;
1821     }
1822
1823     // while we have more to decode or while the decoder did output something on EOF
1824     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1825         int duration;
1826     handle_eof:
1827
1828         ist->pts = ist->next_pts;
1829         ist->dts = ist->next_dts;
1830
1831         if (avpkt.size && avpkt.size != pkt->size) {
1832             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1833                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1834             ist->showed_multi_packet_warning = 1;
1835         }
1836
1837         switch (ist->st->codec->codec_type) {
1838         case AVMEDIA_TYPE_AUDIO:
1839             ret = decode_audio    (ist, &avpkt, &got_output);
1840             break;
1841         case AVMEDIA_TYPE_VIDEO:
1842             ret = decode_video    (ist, &avpkt, &got_output);
1843             if (avpkt.duration) {
1844                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1845             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1846                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1847                 duration = ((int64_t)AV_TIME_BASE *
1848                                 ist->st->codec->time_base.num * ticks) /
1849                                 ist->st->codec->time_base.den;
1850             } else
1851                 duration = 0;
1852
1853             if(ist->dts != AV_NOPTS_VALUE && duration) {
1854                 ist->next_dts += duration;
1855             }else
1856                 ist->next_dts = AV_NOPTS_VALUE;
1857
1858             if (got_output)
1859                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1860             break;
1861         case AVMEDIA_TYPE_SUBTITLE:
1862             ret = transcode_subtitles(ist, &avpkt, &got_output);
1863             break;
1864         default:
1865             return -1;
1866         }
1867
1868         if (ret < 0)
1869             return ret;
1870
1871         avpkt.dts=
1872         avpkt.pts= AV_NOPTS_VALUE;
1873
1874         // touch data and size only if not EOF
1875         if (pkt) {
1876             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1877                 ret = avpkt.size;
1878             avpkt.data += ret;
1879             avpkt.size -= ret;
1880         }
1881         if (!got_output) {
1882             continue;
1883         }
1884     }
1885
1886     /* handle stream copy */
1887     if (!ist->decoding_needed) {
1888         ist->dts = ist->next_dts;
1889         switch (ist->st->codec->codec_type) {
1890         case AVMEDIA_TYPE_AUDIO:
1891             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1892                              ist->st->codec->sample_rate;
1893             break;
1894         case AVMEDIA_TYPE_VIDEO:
1895             if (ist->framerate.num) {
1896                 // TODO: Remove work-around for c99-to-c89 issue 7
1897                 AVRational time_base_q = AV_TIME_BASE_Q;
1898                 int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate));
1899                 ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q);
1900             } else if (pkt->duration) {
1901                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1902             } else if(ist->st->codec->time_base.num != 0) {
1903                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1904                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1905                                   ist->st->codec->time_base.num * ticks) /
1906                                   ist->st->codec->time_base.den;
1907             }
1908             break;
1909         }
1910         ist->pts = ist->dts;
1911         ist->next_pts = ist->next_dts;
1912     }
1913     for (i = 0; pkt && i < nb_output_streams; i++) {
1914         OutputStream *ost = output_streams[i];
1915
1916         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1917             continue;
1918
1919         do_streamcopy(ist, ost, pkt);
1920     }
1921
1922     return 0;
1923 }
1924
1925 static void print_sdp(void)
1926 {
1927     char sdp[16384];
1928     int i;
1929     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1930
1931     if (!avc)
1932         exit(1);
1933     for (i = 0; i < nb_output_files; i++)
1934         avc[i] = output_files[i]->ctx;
1935
1936     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1937     printf("SDP:\n%s\n", sdp);
1938     fflush(stdout);
1939     av_freep(&avc);
1940 }
1941
1942 static int init_input_stream(int ist_index, char *error, int error_len)
1943 {
1944     int ret;
1945     InputStream *ist = input_streams[ist_index];
1946
1947     if (ist->decoding_needed) {
1948         AVCodec *codec = ist->dec;
1949         if (!codec) {
1950             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1951                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1952             return AVERROR(EINVAL);
1953         }
1954
1955         av_opt_set_int(ist->st->codec, "refcounted_frames", 1, 0);
1956
1957         if (!av_dict_get(ist->opts, "threads", NULL, 0))
1958             av_dict_set(&ist->opts, "threads", "auto", 0);
1959         if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
1960             if (ret == AVERROR_EXPERIMENTAL)
1961                 abort_codec_experimental(codec, 0);
1962             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1963                     ist->file_index, ist->st->index);
1964             return ret;
1965         }
1966         assert_avoptions(ist->opts);
1967     }
1968
1969     ist->next_pts = AV_NOPTS_VALUE;
1970     ist->next_dts = AV_NOPTS_VALUE;
1971     ist->is_start = 1;
1972
1973     return 0;
1974 }
1975
1976 static InputStream *get_input_stream(OutputStream *ost)
1977 {
1978     if (ost->source_index >= 0)
1979         return input_streams[ost->source_index];
1980     return NULL;
1981 }
1982
1983 static int compare_int64(const void *a, const void *b)
1984 {
1985     int64_t va = *(int64_t *)a, vb = *(int64_t *)b;
1986     return va < vb ? -1 : va > vb ? +1 : 0;
1987 }
1988
1989 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1990                                     AVCodecContext *avctx)
1991 {
1992     char *p;
1993     int n = 1, i, size, index = 0;
1994     int64_t t, *pts;
1995
1996     for (p = kf; *p; p++)
1997         if (*p == ',')
1998             n++;
1999     size = n;
2000     pts = av_malloc(sizeof(*pts) * size);
2001     if (!pts) {
2002         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
2003         exit(1);
2004     }
2005
2006     p = kf;
2007     for (i = 0; i < n; i++) {
2008         char *next = strchr(p, ',');
2009
2010         if (next)
2011             *next++ = 0;
2012
2013         if (!memcmp(p, "chapters", 8)) {
2014
2015             AVFormatContext *avf = output_files[ost->file_index]->ctx;
2016             int j;
2017
2018             if (avf->nb_chapters > INT_MAX - size ||
2019                 !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
2020                                      sizeof(*pts)))) {
2021                 av_log(NULL, AV_LOG_FATAL,
2022                        "Could not allocate forced key frames array.\n");
2023                 exit(1);
2024             }
2025             t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
2026             t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2027
2028             for (j = 0; j < avf->nb_chapters; j++) {
2029                 AVChapter *c = avf->chapters[j];
2030                 av_assert1(index < size);
2031                 pts[index++] = av_rescale_q(c->start, c->time_base,
2032                                             avctx->time_base) + t;
2033             }
2034
2035         } else {
2036
2037             t = parse_time_or_die("force_key_frames", p, 1);
2038             av_assert1(index < size);
2039             pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2040
2041         }
2042
2043         p = next;
2044     }
2045
2046     av_assert0(index == size);
2047     qsort(pts, size, sizeof(*pts), compare_int64);
2048     ost->forced_kf_count = size;
2049     ost->forced_kf_pts   = pts;
2050 }
2051
2052 static void report_new_stream(int input_index, AVPacket *pkt)
2053 {
2054     InputFile *file = input_files[input_index];
2055     AVStream *st = file->ctx->streams[pkt->stream_index];
2056
2057     if (pkt->stream_index < file->nb_streams_warn)
2058         return;
2059     av_log(file->ctx, AV_LOG_WARNING,
2060            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
2061            av_get_media_type_string(st->codec->codec_type),
2062            input_index, pkt->stream_index,
2063            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
2064     file->nb_streams_warn = pkt->stream_index + 1;
2065 }
2066
2067 static int transcode_init(void)
2068 {
2069     int ret = 0, i, j, k;
2070     AVFormatContext *oc;
2071     AVCodecContext *codec;
2072     OutputStream *ost;
2073     InputStream *ist;
2074     char error[1024];
2075     int want_sdp = 1;
2076
2077     /* init framerate emulation */
2078     for (i = 0; i < nb_input_files; i++) {
2079         InputFile *ifile = input_files[i];
2080         if (ifile->rate_emu)
2081             for (j = 0; j < ifile->nb_streams; j++)
2082                 input_streams[j + ifile->ist_index]->start = av_gettime();
2083     }
2084
2085     /* output stream init */
2086     for (i = 0; i < nb_output_files; i++) {
2087         oc = output_files[i]->ctx;
2088         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2089             av_dump_format(oc, i, oc->filename, 1);
2090             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2091             return AVERROR(EINVAL);
2092         }
2093     }
2094
2095     /* init complex filtergraphs */
2096     for (i = 0; i < nb_filtergraphs; i++)
2097         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2098             return ret;
2099
2100     /* for each output stream, we compute the right encoding parameters */
2101     for (i = 0; i < nb_output_streams; i++) {
2102         AVCodecContext *icodec = NULL;
2103         ost = output_streams[i];
2104         oc  = output_files[ost->file_index]->ctx;
2105         ist = get_input_stream(ost);
2106
2107         if (ost->attachment_filename)
2108             continue;
2109
2110         codec  = ost->st->codec;
2111
2112         if (ist) {
2113             icodec = ist->st->codec;
2114
2115             ost->st->disposition          = ist->st->disposition;
2116             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2117             codec->chroma_sample_location = icodec->chroma_sample_location;
2118         }
2119
2120         if (ost->stream_copy) {
2121             uint64_t extra_size;
2122
2123             av_assert0(ist && !ost->filter);
2124
2125             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2126
2127             if (extra_size > INT_MAX) {
2128                 return AVERROR(EINVAL);
2129             }
2130
2131             /* if stream_copy is selected, no need to decode or encode */
2132             codec->codec_id   = icodec->codec_id;
2133             codec->codec_type = icodec->codec_type;
2134
2135             if (!codec->codec_tag) {
2136                 unsigned int codec_tag;
2137                 if (!oc->oformat->codec_tag ||
2138                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2139                      !av_codec_get_tag2(oc->oformat->codec_tag, icodec->codec_id, &codec_tag))
2140                     codec->codec_tag = icodec->codec_tag;
2141             }
2142
2143             codec->bit_rate       = icodec->bit_rate;
2144             codec->rc_max_rate    = icodec->rc_max_rate;
2145             codec->rc_buffer_size = icodec->rc_buffer_size;
2146             codec->field_order    = icodec->field_order;
2147             codec->extradata      = av_mallocz(extra_size);
2148             if (!codec->extradata) {
2149                 return AVERROR(ENOMEM);
2150             }
2151             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2152             codec->extradata_size= icodec->extradata_size;
2153             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2154
2155             codec->time_base = ist->st->time_base;
2156             /*
2157              * Avi is a special case here because it supports variable fps but
2158              * having the fps and timebase differe significantly adds quite some
2159              * overhead
2160              */
2161             if(!strcmp(oc->oformat->name, "avi")) {
2162                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2163                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2164                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2165                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2166                      || copy_tb==2){
2167                     codec->time_base.num = ist->st->r_frame_rate.den;
2168                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2169                     codec->ticks_per_frame = 2;
2170                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2171                                  && av_q2d(ist->st->time_base) < 1.0/500
2172                     || copy_tb==0){
2173                     codec->time_base = icodec->time_base;
2174                     codec->time_base.num *= icodec->ticks_per_frame;
2175                     codec->time_base.den *= 2;
2176                     codec->ticks_per_frame = 2;
2177                 }
2178             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2179                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2180                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2181                       && strcmp(oc->oformat->name, "f4v")
2182             ) {
2183                 if(   copy_tb<0 && icodec->time_base.den
2184                                 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2185                                 && av_q2d(ist->st->time_base) < 1.0/500
2186                    || copy_tb==0){
2187                     codec->time_base = icodec->time_base;
2188                     codec->time_base.num *= icodec->ticks_per_frame;
2189                 }
2190             }
2191             if (   codec->codec_tag == AV_RL32("tmcd")
2192                 && icodec->time_base.num < icodec->time_base.den
2193                 && icodec->time_base.num > 0
2194                 && 121LL*icodec->time_base.num > icodec->time_base.den) {
2195                 codec->time_base = icodec->time_base;
2196             }
2197
2198             if (ist && !ost->frame_rate.num)
2199                 ost->frame_rate = ist->framerate;
2200             if(ost->frame_rate.num)
2201                 codec->time_base = av_inv_q(ost->frame_rate);
2202
2203             av_reduce(&codec->time_base.num, &codec->time_base.den,
2204                         codec->time_base.num, codec->time_base.den, INT_MAX);
2205
2206             switch (codec->codec_type) {
2207             case AVMEDIA_TYPE_AUDIO:
2208                 if (audio_volume != 256) {
2209                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2210                     exit(1);
2211                 }
2212                 codec->channel_layout     = icodec->channel_layout;
2213                 codec->sample_rate        = icodec->sample_rate;
2214                 codec->channels           = icodec->channels;
2215                 codec->frame_size         = icodec->frame_size;
2216                 codec->audio_service_type = icodec->audio_service_type;
2217                 codec->block_align        = icodec->block_align;
2218                 if((codec->block_align == 1 || codec->block_align == 1152 || codec->block_align == 576) && codec->codec_id == AV_CODEC_ID_MP3)
2219                     codec->block_align= 0;
2220                 if(codec->codec_id == AV_CODEC_ID_AC3)
2221                     codec->block_align= 0;
2222                 break;
2223             case AVMEDIA_TYPE_VIDEO:
2224                 codec->pix_fmt            = icodec->pix_fmt;
2225                 codec->width              = icodec->width;
2226                 codec->height             = icodec->height;
2227                 codec->has_b_frames       = icodec->has_b_frames;
2228                 if (ost->frame_aspect_ratio.num) { // overridden by the -aspect cli option
2229                     codec->sample_aspect_ratio   =
2230                     ost->st->sample_aspect_ratio =
2231                         av_mul_q(ost->frame_aspect_ratio,
2232                                  (AVRational){ codec->height, codec->width });
2233                     av_log(NULL, AV_LOG_WARNING, "Overriding aspect ratio "
2234                            "with stream copy may produce invalid files\n");
2235                 } else if (!codec->sample_aspect_ratio.num) {
2236                     codec->sample_aspect_ratio   =
2237                     ost->st->sample_aspect_ratio =
2238                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2239                         ist->st->codec->sample_aspect_ratio.num ?
2240                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2241                 }
2242                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2243                 break;
2244             case AVMEDIA_TYPE_SUBTITLE:
2245                 codec->width  = icodec->width;
2246                 codec->height = icodec->height;
2247                 break;
2248             case AVMEDIA_TYPE_DATA:
2249             case AVMEDIA_TYPE_ATTACHMENT:
2250                 break;
2251             default:
2252                 abort();
2253             }
2254         } else {
2255             if (!ost->enc)
2256                 ost->enc = avcodec_find_encoder(codec->codec_id);
2257             if (!ost->enc) {
2258                 /* should only happen when a default codec is not present. */
2259                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2260                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2261                 ret = AVERROR(EINVAL);
2262                 goto dump_format;
2263             }
2264
2265             if (ist)
2266                 ist->decoding_needed++;
2267             ost->encoding_needed = 1;
2268
2269             if (!ost->filter &&
2270                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2271                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2272                     FilterGraph *fg;
2273                     fg = init_simple_filtergraph(ist, ost);
2274                     if (configure_filtergraph(fg)) {
2275                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2276                         exit(1);
2277                     }
2278             }
2279
2280             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2281                 if (ost->filter && !ost->frame_rate.num)
2282                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2283                 if (ist && !ost->frame_rate.num)
2284                     ost->frame_rate = ist->framerate;
2285                 if (ist && !ost->frame_rate.num)
2286                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2287 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2288                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2289                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2290                     ost->frame_rate = ost->enc->supported_framerates[idx];
2291                 }
2292             }
2293
2294             switch (codec->codec_type) {
2295             case AVMEDIA_TYPE_AUDIO:
2296                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2297                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2298                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2299                 codec->channels       = avfilter_link_get_channels(ost->filter->filter->inputs[0]);
2300                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2301                 break;
2302             case AVMEDIA_TYPE_VIDEO:
2303                 codec->time_base = av_inv_q(ost->frame_rate);
2304                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2305                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2306                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2307                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2308                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2309                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2310                 }
2311                 for (j = 0; j < ost->forced_kf_count; j++)
2312                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2313                                                          AV_TIME_BASE_Q,
2314                                                          codec->time_base);
2315
2316                 codec->width  = ost->filter->filter->inputs[0]->w;
2317                 codec->height = ost->filter->filter->inputs[0]->h;
2318                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2319                     ost->frame_aspect_ratio.num ? // overridden by the -aspect cli option
2320                     av_mul_q(ost->frame_aspect_ratio, (AVRational){ codec->height, codec->width }) :
2321                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2322                 if (!strncmp(ost->enc->name, "libx264", 7) &&
2323                     codec->pix_fmt == AV_PIX_FMT_NONE &&
2324                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2325                     av_log(NULL, AV_LOG_INFO,
2326                            "No pixel format specified, %s for H.264 encoding chosen.\n"
2327                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2328                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2329                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2330
2331                 if (!icodec ||
2332                     codec->width   != icodec->width  ||
2333                     codec->height  != icodec->height ||
2334                     codec->pix_fmt != icodec->pix_fmt) {
2335                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2336                 }
2337
2338                 if (ost->forced_keyframes) {
2339                     if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
2340                         ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
2341                                             forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
2342                         if (ret < 0) {
2343                             av_log(NULL, AV_LOG_ERROR,
2344                                    "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
2345                             return ret;
2346                         }
2347                         ost->forced_keyframes_expr_const_values[FKF_N] = 0;
2348                         ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
2349                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
2350                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;
2351                     } else {
2352                         parse_forced_key_frames(ost->forced_keyframes, ost, ost->st->codec);
2353                     }
2354                 }
2355                 break;
2356             case AVMEDIA_TYPE_SUBTITLE:
2357                 codec->time_base = (AVRational){1, 1000};
2358                 if (!codec->width) {
2359                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2360                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2361                 }
2362                 break;
2363             default:
2364                 abort();
2365                 break;
2366             }
2367             /* two pass mode */
2368             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2369                 char logfilename[1024];
2370                 FILE *f;
2371
2372                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2373                          ost->logfile_prefix ? ost->logfile_prefix :
2374                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2375                          i);
2376                 if (!strcmp(ost->enc->name, "libx264")) {
2377                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2378                 } else {
2379                     if (codec->flags & CODEC_FLAG_PASS2) {
2380                         char  *logbuffer;
2381                         size_t logbuffer_size;
2382                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2383                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2384                                    logfilename);
2385                             exit(1);
2386                         }
2387                         codec->stats_in = logbuffer;
2388                     }
2389                     if (codec->flags & CODEC_FLAG_PASS1) {
2390                         f = fopen(logfilename, "wb");
2391                         if (!f) {
2392                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2393                                 logfilename, strerror(errno));
2394                             exit(1);
2395                         }
2396                         ost->logfile = f;
2397                     }
2398                 }
2399             }
2400         }
2401     }
2402
2403     /* open each encoder */
2404     for (i = 0; i < nb_output_streams; i++) {
2405         ost = output_streams[i];
2406         if (ost->encoding_needed) {
2407             AVCodec      *codec = ost->enc;
2408             AVCodecContext *dec = NULL;
2409
2410             if ((ist = get_input_stream(ost)))
2411                 dec = ist->st->codec;
2412             if (dec && dec->subtitle_header) {
2413                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2414                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2415                 if (!ost->st->codec->subtitle_header) {
2416                     ret = AVERROR(ENOMEM);
2417                     goto dump_format;
2418                 }
2419                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2420                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2421             }
2422             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2423                 av_dict_set(&ost->opts, "threads", "auto", 0);
2424             if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
2425                 if (ret == AVERROR_EXPERIMENTAL)
2426                     abort_codec_experimental(codec, 1);
2427                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2428                         ost->file_index, ost->index);
2429                 goto dump_format;
2430             }
2431             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2432                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2433                 av_buffersink_set_frame_size(ost->filter->filter,
2434                                              ost->st->codec->frame_size);
2435             assert_avoptions(ost->opts);
2436             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2437                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2438                                              " It takes bits/s as argument, not kbits/s\n");
2439             extra_size += ost->st->codec->extradata_size;
2440
2441             if (ost->st->codec->me_threshold)
2442                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
2443         } else {
2444             av_opt_set_dict(ost->st->codec, &ost->opts);
2445         }
2446     }
2447
2448     /* init input streams */
2449     for (i = 0; i < nb_input_streams; i++)
2450         if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
2451             for (i = 0; i < nb_output_streams; i++) {
2452                 ost = output_streams[i];
2453                 avcodec_close(ost->st->codec);
2454             }
2455             goto dump_format;
2456         }
2457
2458     /* discard unused programs */
2459     for (i = 0; i < nb_input_files; i++) {
2460         InputFile *ifile = input_files[i];
2461         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2462             AVProgram *p = ifile->ctx->programs[j];
2463             int discard  = AVDISCARD_ALL;
2464
2465             for (k = 0; k < p->nb_stream_indexes; k++)
2466                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2467                     discard = AVDISCARD_DEFAULT;
2468                     break;
2469                 }
2470             p->discard = discard;
2471         }
2472     }
2473
2474     /* open files and write file headers */
2475     for (i = 0; i < nb_output_files; i++) {
2476         oc = output_files[i]->ctx;
2477         oc->interrupt_callback = int_cb;
2478         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2479             char errbuf[128];
2480             const char *errbuf_ptr = errbuf;
2481             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
2482                 errbuf_ptr = strerror(AVUNERROR(ret));
2483             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
2484             ret = AVERROR(EINVAL);
2485             goto dump_format;
2486         }
2487 //         assert_avoptions(output_files[i]->opts);
2488         if (strcmp(oc->oformat->name, "rtp")) {
2489             want_sdp = 0;
2490         }
2491     }
2492
2493  dump_format:
2494     /* dump the file output parameters - cannot be done before in case
2495        of stream copy */
2496     for (i = 0; i < nb_output_files; i++) {
2497         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2498     }
2499
2500     /* dump the stream mapping */
2501     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2502     for (i = 0; i < nb_input_streams; i++) {
2503         ist = input_streams[i];
2504
2505         for (j = 0; j < ist->nb_filters; j++) {
2506             if (ist->filters[j]->graph->graph_desc) {
2507                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2508                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2509                        ist->filters[j]->name);
2510                 if (nb_filtergraphs > 1)
2511                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2512                 av_log(NULL, AV_LOG_INFO, "\n");
2513             }
2514         }
2515     }
2516
2517     for (i = 0; i < nb_output_streams; i++) {
2518         ost = output_streams[i];
2519
2520         if (ost->attachment_filename) {
2521             /* an attached file */
2522             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2523                    ost->attachment_filename, ost->file_index, ost->index);
2524             continue;
2525         }
2526
2527         if (ost->filter && ost->filter->graph->graph_desc) {
2528             /* output from a complex graph */
2529             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2530             if (nb_filtergraphs > 1)
2531                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2532
2533             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2534                    ost->index, ost->enc ? ost->enc->name : "?");
2535             continue;
2536         }
2537
2538         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2539                input_streams[ost->source_index]->file_index,
2540                input_streams[ost->source_index]->st->index,
2541                ost->file_index,
2542                ost->index);
2543         if (ost->sync_ist != input_streams[ost->source_index])
2544             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2545                    ost->sync_ist->file_index,
2546                    ost->sync_ist->st->index);
2547         if (ost->stream_copy)
2548             av_log(NULL, AV_LOG_INFO, " (copy)");
2549         else
2550             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2551                    input_streams[ost->source_index]->dec->name : "?",
2552                    ost->enc ? ost->enc->name : "?");
2553         av_log(NULL, AV_LOG_INFO, "\n");
2554     }
2555
2556     if (ret) {
2557         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2558         return ret;
2559     }
2560
2561     if (want_sdp) {
2562         print_sdp();
2563     }
2564
2565     return 0;
2566 }
2567
2568 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2569 static int need_output(void)
2570 {
2571     int i;
2572
2573     for (i = 0; i < nb_output_streams; i++) {
2574         OutputStream *ost    = output_streams[i];
2575         OutputFile *of       = output_files[ost->file_index];
2576         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2577
2578         if (ost->finished ||
2579             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2580             continue;
2581         if (ost->frame_number >= ost->max_frames) {
2582             int j;
2583             for (j = 0; j < of->ctx->nb_streams; j++)
2584                 close_output_stream(output_streams[of->ost_index + j]);
2585             continue;
2586         }
2587
2588         return 1;
2589     }
2590
2591     return 0;
2592 }
2593
2594 /**
2595  * Select the output stream to process.
2596  *
2597  * @return  selected output stream, or NULL if none available
2598  */
2599 static OutputStream *choose_output(void)
2600 {
2601     int i;
2602     int64_t opts_min = INT64_MAX;
2603     OutputStream *ost_min = NULL;
2604
2605     for (i = 0; i < nb_output_streams; i++) {
2606         OutputStream *ost = output_streams[i];
2607         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2608                                     AV_TIME_BASE_Q);
2609         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2610             opts_min = opts;
2611             ost_min  = ost;
2612         }
2613     }
2614     return ost_min;
2615 }
2616
2617 static int check_keyboard_interaction(int64_t cur_time)
2618 {
2619     int i, ret, key;
2620     static int64_t last_time;
2621     if (received_nb_signals)
2622         return AVERROR_EXIT;
2623     /* read_key() returns 0 on EOF */
2624     if(cur_time - last_time >= 100000 && !run_as_daemon){
2625         key =  read_key();
2626         last_time = cur_time;
2627     }else
2628         key = -1;
2629     if (key == 'q')
2630         return AVERROR_EXIT;
2631     if (key == '+') av_log_set_level(av_log_get_level()+10);
2632     if (key == '-') av_log_set_level(av_log_get_level()-10);
2633     if (key == 's') qp_hist     ^= 1;
2634     if (key == 'h'){
2635         if (do_hex_dump){
2636             do_hex_dump = do_pkt_dump = 0;
2637         } else if(do_pkt_dump){
2638             do_hex_dump = 1;
2639         } else
2640             do_pkt_dump = 1;
2641         av_log_set_level(AV_LOG_DEBUG);
2642     }
2643     if (key == 'c' || key == 'C'){
2644         char buf[4096], target[64], command[256], arg[256] = {0};
2645         double time;
2646         int k, n = 0;
2647         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2648         i = 0;
2649         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2650             if (k > 0)
2651                 buf[i++] = k;
2652         buf[i] = 0;
2653         if (k > 0 &&
2654             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2655             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2656                    target, time, command, arg);
2657             for (i = 0; i < nb_filtergraphs; i++) {
2658                 FilterGraph *fg = filtergraphs[i];
2659                 if (fg->graph) {
2660                     if (time < 0) {
2661                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2662                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2663                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2664                     } else {
2665                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2666                     }
2667                 }
2668             }
2669         } else {
2670             av_log(NULL, AV_LOG_ERROR,
2671                    "Parse error, at least 3 arguments were expected, "
2672                    "only %d given in string '%s'\n", n, buf);
2673         }
2674     }
2675     if (key == 'd' || key == 'D'){
2676         int debug=0;
2677         if(key == 'D') {
2678             debug = input_streams[0]->st->codec->debug<<1;
2679             if(!debug) debug = 1;
2680             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2681                 debug += debug;
2682         }else
2683             if(scanf("%d", &debug)!=1)
2684                 fprintf(stderr,"error parsing debug value\n");
2685         for(i=0;i<nb_input_streams;i++) {
2686             input_streams[i]->st->codec->debug = debug;
2687         }
2688         for(i=0;i<nb_output_streams;i++) {
2689             OutputStream *ost = output_streams[i];
2690             ost->st->codec->debug = debug;
2691         }
2692         if(debug) av_log_set_level(AV_LOG_DEBUG);
2693         fprintf(stderr,"debug=%d\n", debug);
2694     }
2695     if (key == '?'){
2696         fprintf(stderr, "key    function\n"
2697                         "?      show this help\n"
2698                         "+      increase verbosity\n"
2699                         "-      decrease verbosity\n"
2700                         "c      Send command to filtergraph\n"
2701                         "D      cycle through available debug modes\n"
2702                         "h      dump packets/hex press to cycle through the 3 states\n"
2703                         "q      quit\n"
2704                         "s      Show QP histogram\n"
2705         );
2706     }
2707     return 0;
2708 }
2709
2710 #if HAVE_PTHREADS
2711 static void *input_thread(void *arg)
2712 {
2713     InputFile *f = arg;
2714     int ret = 0;
2715
2716     while (!transcoding_finished && ret >= 0) {
2717         AVPacket pkt;
2718         ret = av_read_frame(f->ctx, &pkt);
2719
2720         if (ret == AVERROR(EAGAIN)) {
2721             av_usleep(10000);
2722             ret = 0;
2723             continue;
2724         } else if (ret < 0)
2725             break;
2726
2727         pthread_mutex_lock(&f->fifo_lock);
2728         while (!av_fifo_space(f->fifo))
2729             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2730
2731         av_dup_packet(&pkt);
2732         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2733
2734         pthread_mutex_unlock(&f->fifo_lock);
2735     }
2736
2737     f->finished = 1;
2738     return NULL;
2739 }
2740
2741 static void free_input_threads(void)
2742 {
2743     int i;
2744
2745     if (nb_input_files == 1)
2746         return;
2747
2748     transcoding_finished = 1;
2749
2750     for (i = 0; i < nb_input_files; i++) {
2751         InputFile *f = input_files[i];
2752         AVPacket pkt;
2753
2754         if (!f->fifo || f->joined)
2755             continue;
2756
2757         pthread_mutex_lock(&f->fifo_lock);
2758         while (av_fifo_size(f->fifo)) {
2759             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2760             av_free_packet(&pkt);
2761         }
2762         pthread_cond_signal(&f->fifo_cond);
2763         pthread_mutex_unlock(&f->fifo_lock);
2764
2765         pthread_join(f->thread, NULL);
2766         f->joined = 1;
2767
2768         while (av_fifo_size(f->fifo)) {
2769             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2770             av_free_packet(&pkt);
2771         }
2772         av_fifo_free(f->fifo);
2773     }
2774 }
2775
2776 static int init_input_threads(void)
2777 {
2778     int i, ret;
2779
2780     if (nb_input_files == 1)
2781         return 0;
2782
2783     for (i = 0; i < nb_input_files; i++) {
2784         InputFile *f = input_files[i];
2785
2786         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2787             return AVERROR(ENOMEM);
2788
2789         pthread_mutex_init(&f->fifo_lock, NULL);
2790         pthread_cond_init (&f->fifo_cond, NULL);
2791
2792         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2793             return AVERROR(ret);
2794     }
2795     return 0;
2796 }
2797
2798 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2799 {
2800     int ret = 0;
2801
2802     pthread_mutex_lock(&f->fifo_lock);
2803
2804     if (av_fifo_size(f->fifo)) {
2805         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2806         pthread_cond_signal(&f->fifo_cond);
2807     } else {
2808         if (f->finished)
2809             ret = AVERROR_EOF;
2810         else
2811             ret = AVERROR(EAGAIN);
2812     }
2813
2814     pthread_mutex_unlock(&f->fifo_lock);
2815
2816     return ret;
2817 }
2818 #endif
2819
2820 static int get_input_packet(InputFile *f, AVPacket *pkt)
2821 {
2822     if (f->rate_emu) {
2823         int i;
2824         for (i = 0; i < f->nb_streams; i++) {
2825             InputStream *ist = input_streams[f->ist_index + i];
2826             int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
2827             int64_t now = av_gettime() - ist->start;
2828             if (pts > now)
2829                 return AVERROR(EAGAIN);
2830         }
2831     }
2832
2833 #if HAVE_PTHREADS
2834     if (nb_input_files > 1)
2835         return get_input_packet_mt(f, pkt);
2836 #endif
2837     return av_read_frame(f->ctx, pkt);
2838 }
2839
2840 static int got_eagain(void)
2841 {
2842     int i;
2843     for (i = 0; i < nb_output_streams; i++)
2844         if (output_streams[i]->unavailable)
2845             return 1;
2846     return 0;
2847 }
2848
2849 static void reset_eagain(void)
2850 {
2851     int i;
2852     for (i = 0; i < nb_input_files; i++)
2853         input_files[i]->eagain = 0;
2854     for (i = 0; i < nb_output_streams; i++)
2855         output_streams[i]->unavailable = 0;
2856 }
2857
2858 /*
2859  * Return
2860  * - 0 -- one packet was read and processed
2861  * - AVERROR(EAGAIN) -- no packets were available for selected file,
2862  *   this function should be called again
2863  * - AVERROR_EOF -- this function should not be called again
2864  */
2865 static int process_input(int file_index)
2866 {
2867     InputFile *ifile = input_files[file_index];
2868     AVFormatContext *is;
2869     InputStream *ist;
2870     AVPacket pkt;
2871     int ret, i, j;
2872
2873     is  = ifile->ctx;
2874     ret = get_input_packet(ifile, &pkt);
2875
2876     if (ret == AVERROR(EAGAIN)) {
2877         ifile->eagain = 1;
2878         return ret;
2879     }
2880     if (ret < 0) {
2881         if (ret != AVERROR_EOF) {
2882             print_error(is->filename, ret);
2883             if (exit_on_error)
2884                 exit(1);
2885         }
2886         ifile->eof_reached = 1;
2887
2888         for (i = 0; i < ifile->nb_streams; i++) {
2889             ist = input_streams[ifile->ist_index + i];
2890             if (ist->decoding_needed)
2891                 output_packet(ist, NULL);
2892
2893             /* mark all outputs that don't go through lavfi as finished */
2894             for (j = 0; j < nb_output_streams; j++) {
2895                 OutputStream *ost = output_streams[j];
2896
2897                 if (ost->source_index == ifile->ist_index + i &&
2898                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2899                     close_output_stream(ost);
2900             }
2901         }
2902
2903         return AVERROR(EAGAIN);
2904     }
2905
2906     reset_eagain();
2907
2908     if (do_pkt_dump) {
2909         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2910                          is->streams[pkt.stream_index]);
2911     }
2912     /* the following test is needed in case new streams appear
2913        dynamically in stream : we ignore them */
2914     if (pkt.stream_index >= ifile->nb_streams) {
2915         report_new_stream(file_index, &pkt);
2916         goto discard_packet;
2917     }
2918
2919     ist = input_streams[ifile->ist_index + pkt.stream_index];
2920     if (ist->discard)
2921         goto discard_packet;
2922
2923     if (debug_ts) {
2924         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
2925                "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",
2926                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2927                av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
2928                av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
2929                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2930                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2931                av_ts2str(input_files[ist->file_index]->ts_offset),
2932                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
2933     }
2934
2935     if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
2936         int64_t stime, stime2;
2937         // Correcting starttime based on the enabled streams
2938         // 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.
2939         //       so we instead do it here as part of discontinuity handling
2940         if (   ist->next_dts == AV_NOPTS_VALUE
2941             && ifile->ts_offset == -is->start_time
2942             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2943             int64_t new_start_time = INT64_MAX;
2944             for (i=0; i<is->nb_streams; i++) {
2945                 AVStream *st = is->streams[i];
2946                 if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
2947                     continue;
2948                 new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
2949             }
2950             if (new_start_time > is->start_time) {
2951                 av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
2952                 ifile->ts_offset = -new_start_time;
2953             }
2954         }
2955
2956         stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
2957         stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
2958         ist->wrap_correction_done = 1;
2959
2960         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2961             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
2962             ist->wrap_correction_done = 0;
2963         }
2964         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2965             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
2966             ist->wrap_correction_done = 0;
2967         }
2968     }
2969
2970     if (pkt.dts != AV_NOPTS_VALUE)
2971         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2972     if (pkt.pts != AV_NOPTS_VALUE)
2973         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2974
2975     if (pkt.pts != AV_NOPTS_VALUE)
2976         pkt.pts *= ist->ts_scale;
2977     if (pkt.dts != AV_NOPTS_VALUE)
2978         pkt.dts *= ist->ts_scale;
2979
2980     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts == AV_NOPTS_VALUE && !copy_ts
2981         && (is->iformat->flags & AVFMT_TS_DISCONT) && ifile->last_ts != AV_NOPTS_VALUE) {
2982         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2983         int64_t delta   = pkt_dts - ifile->last_ts;
2984         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2985             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2986                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)){
2987             ifile->ts_offset -= delta;
2988             av_log(NULL, AV_LOG_DEBUG,
2989                    "Inter stream timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2990                    delta, ifile->ts_offset);
2991             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2992             if (pkt.pts != AV_NOPTS_VALUE)
2993                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2994         }
2995     }
2996
2997     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2998         !copy_ts) {
2999         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3000         int64_t delta   = pkt_dts - ist->next_dts;
3001         if (is->iformat->flags & AVFMT_TS_DISCONT) {
3002         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3003             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3004                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3005             pkt_dts+1<ist->pts){
3006             ifile->ts_offset -= delta;
3007             av_log(NULL, AV_LOG_DEBUG,
3008                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3009                    delta, ifile->ts_offset);
3010             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3011             if (pkt.pts != AV_NOPTS_VALUE)
3012                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3013         }
3014         } else {
3015             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3016                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
3017                ) {
3018                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3019                 pkt.dts = AV_NOPTS_VALUE;
3020             }
3021             if (pkt.pts != AV_NOPTS_VALUE){
3022                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3023                 delta   = pkt_pts - ist->next_dts;
3024                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3025                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
3026                    ) {
3027                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3028                     pkt.pts = AV_NOPTS_VALUE;
3029                 }
3030             }
3031         }
3032     }
3033
3034     if (pkt.dts != AV_NOPTS_VALUE)
3035         ifile->last_ts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3036
3037     if (debug_ts) {
3038         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",
3039                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
3040                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3041                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3042                av_ts2str(input_files[ist->file_index]->ts_offset),
3043                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3044     }
3045
3046     sub2video_heartbeat(ist, pkt.pts);
3047
3048     ret = output_packet(ist, &pkt);
3049     if (ret < 0) {
3050         char buf[128];
3051         av_strerror(ret, buf, sizeof(buf));
3052         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
3053                 ist->file_index, ist->st->index, buf);
3054         if (exit_on_error)
3055             exit(1);
3056     }
3057
3058 discard_packet:
3059     av_free_packet(&pkt);
3060
3061     return 0;
3062 }
3063
3064 /**
3065  * Perform a step of transcoding for the specified filter graph.
3066  *
3067  * @param[in]  graph     filter graph to consider
3068  * @param[out] best_ist  input stream where a frame would allow to continue
3069  * @return  0 for success, <0 for error
3070  */
3071 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
3072 {
3073     int i, ret;
3074     int nb_requests, nb_requests_max = 0;
3075     InputFilter *ifilter;
3076     InputStream *ist;
3077
3078     *best_ist = NULL;
3079     ret = avfilter_graph_request_oldest(graph->graph);
3080     if (ret >= 0)
3081         return reap_filters();
3082
3083     if (ret == AVERROR_EOF) {
3084         ret = reap_filters();
3085         for (i = 0; i < graph->nb_outputs; i++)
3086             close_output_stream(graph->outputs[i]->ost);
3087         return ret;
3088     }
3089     if (ret != AVERROR(EAGAIN))
3090         return ret;
3091
3092     for (i = 0; i < graph->nb_inputs; i++) {
3093         ifilter = graph->inputs[i];
3094         ist = ifilter->ist;
3095         if (input_files[ist->file_index]->eagain ||
3096             input_files[ist->file_index]->eof_reached)
3097             continue;
3098         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
3099         if (nb_requests > nb_requests_max) {
3100             nb_requests_max = nb_requests;
3101             *best_ist = ist;
3102         }
3103     }
3104
3105     if (!*best_ist)
3106         for (i = 0; i < graph->nb_outputs; i++)
3107             graph->outputs[i]->ost->unavailable = 1;
3108
3109     return 0;
3110 }
3111
3112 /**
3113  * Run a single step of transcoding.
3114  *
3115  * @return  0 for success, <0 for error
3116  */
3117 static int transcode_step(void)
3118 {
3119     OutputStream *ost;
3120     InputStream  *ist;
3121     int ret;
3122
3123     ost = choose_output();
3124     if (!ost) {
3125         if (got_eagain()) {
3126             reset_eagain();
3127             av_usleep(10000);
3128             return 0;
3129         }
3130         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
3131         return AVERROR_EOF;
3132     }
3133
3134     if (ost->filter) {
3135         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
3136             return ret;
3137         if (!ist)
3138             return 0;
3139     } else {
3140         av_assert0(ost->source_index >= 0);
3141         ist = input_streams[ost->source_index];
3142     }
3143
3144     ret = process_input(ist->file_index);
3145     if (ret == AVERROR(EAGAIN)) {
3146         if (input_files[ist->file_index]->eagain)
3147             ost->unavailable = 1;
3148         return 0;
3149     }
3150     if (ret < 0)
3151         return ret == AVERROR_EOF ? 0 : ret;
3152
3153     return reap_filters();
3154 }
3155
3156 /*
3157  * The following code is the main loop of the file converter
3158  */
3159 static int transcode(void)
3160 {
3161     int ret, i;
3162     AVFormatContext *os;
3163     OutputStream *ost;
3164     InputStream *ist;
3165     int64_t timer_start;
3166
3167     ret = transcode_init();
3168     if (ret < 0)
3169         goto fail;
3170
3171     if (stdin_interaction) {
3172         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3173     }
3174
3175     timer_start = av_gettime();
3176
3177 #if HAVE_PTHREADS
3178     if ((ret = init_input_threads()) < 0)
3179         goto fail;
3180 #endif
3181
3182     while (!received_sigterm) {
3183         int64_t cur_time= av_gettime();
3184
3185         /* if 'q' pressed, exits */
3186         if (stdin_interaction)
3187             if (check_keyboard_interaction(cur_time) < 0)
3188                 break;
3189
3190         /* check if there's any stream where output is still needed */
3191         if (!need_output()) {
3192             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3193             break;
3194         }
3195
3196         ret = transcode_step();
3197         if (ret < 0) {
3198             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
3199                 continue;
3200
3201             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
3202             break;
3203         }
3204
3205         /* dump report by using the output first video and audio streams */
3206         print_report(0, timer_start, cur_time);
3207     }
3208 #if HAVE_PTHREADS
3209     free_input_threads();
3210 #endif
3211
3212     /* at the end of stream, we must flush the decoder buffers */
3213     for (i = 0; i < nb_input_streams; i++) {
3214         ist = input_streams[i];
3215         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3216             output_packet(ist, NULL);
3217         }
3218     }
3219     flush_encoders();
3220
3221     term_exit();
3222
3223     /* write the trailer if needed and close file */
3224     for (i = 0; i < nb_output_files; i++) {
3225         os = output_files[i]->ctx;
3226         av_write_trailer(os);
3227     }
3228
3229     /* dump report by using the first video and audio streams */
3230     print_report(1, timer_start, av_gettime());
3231
3232     /* close each encoder */
3233     for (i = 0; i < nb_output_streams; i++) {
3234         ost = output_streams[i];
3235         if (ost->encoding_needed) {
3236             av_freep(&ost->st->codec->stats_in);
3237             avcodec_close(ost->st->codec);
3238         }
3239     }
3240
3241     /* close each decoder */
3242     for (i = 0; i < nb_input_streams; i++) {
3243         ist = input_streams[i];
3244         if (ist->decoding_needed) {
3245             avcodec_close(ist->st->codec);
3246         }
3247     }
3248
3249     /* finished ! */
3250     ret = 0;
3251
3252  fail:
3253 #if HAVE_PTHREADS
3254     free_input_threads();
3255 #endif
3256
3257     if (output_streams) {
3258         for (i = 0; i < nb_output_streams; i++) {
3259             ost = output_streams[i];
3260             if (ost) {
3261                 if (ost->stream_copy)
3262                     av_freep(&ost->st->codec->extradata);
3263                 if (ost->logfile) {
3264                     fclose(ost->logfile);
3265                     ost->logfile = NULL;
3266                 }
3267                 av_freep(&ost->st->codec->subtitle_header);
3268                 av_free(ost->forced_kf_pts);
3269                 av_dict_free(&ost->opts);
3270                 av_dict_free(&ost->swr_opts);
3271                 av_dict_free(&ost->resample_opts);
3272             }
3273         }
3274     }
3275     return ret;
3276 }
3277
3278
3279 static int64_t getutime(void)
3280 {
3281 #if HAVE_GETRUSAGE
3282     struct rusage rusage;
3283
3284     getrusage(RUSAGE_SELF, &rusage);
3285     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3286 #elif HAVE_GETPROCESSTIMES
3287     HANDLE proc;
3288     FILETIME c, e, k, u;
3289     proc = GetCurrentProcess();
3290     GetProcessTimes(proc, &c, &e, &k, &u);
3291     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3292 #else
3293     return av_gettime();
3294 #endif
3295 }
3296
3297 static int64_t getmaxrss(void)
3298 {
3299 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3300     struct rusage rusage;
3301     getrusage(RUSAGE_SELF, &rusage);
3302     return (int64_t)rusage.ru_maxrss * 1024;
3303 #elif HAVE_GETPROCESSMEMORYINFO
3304     HANDLE proc;
3305     PROCESS_MEMORY_COUNTERS memcounters;
3306     proc = GetCurrentProcess();
3307     memcounters.cb = sizeof(memcounters);
3308     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3309     return memcounters.PeakPagefileUsage;
3310 #else
3311     return 0;
3312 #endif
3313 }
3314
3315 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3316 {
3317 }
3318
3319 int main(int argc, char **argv)
3320 {
3321     int ret;
3322     int64_t ti;
3323
3324     atexit(exit_program);
3325
3326     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3327
3328     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3329     parse_loglevel(argc, argv, options);
3330
3331     if(argc>1 && !strcmp(argv[1], "-d")){
3332         run_as_daemon=1;
3333         av_log_set_callback(log_callback_null);
3334         argc--;
3335         argv++;
3336     }
3337
3338     avcodec_register_all();
3339 #if CONFIG_AVDEVICE
3340     avdevice_register_all();
3341 #endif
3342     avfilter_register_all();
3343     av_register_all();
3344     avformat_network_init();
3345
3346     show_banner(argc, argv, options);
3347
3348     term_init();
3349
3350     /* parse options and open all input/output files */
3351     ret = ffmpeg_parse_options(argc, argv);
3352     if (ret < 0)
3353         exit(1);
3354
3355     if (nb_output_files <= 0 && nb_input_files == 0) {
3356         show_usage();
3357         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3358         exit(1);
3359     }
3360
3361     /* file converter / grab */
3362     if (nb_output_files <= 0) {
3363         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3364         exit(1);
3365     }
3366
3367 //     if (nb_input_files == 0) {
3368 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3369 //         exit(1);
3370 //     }
3371
3372     current_time = ti = getutime();
3373     if (transcode() < 0)
3374         exit(1);
3375     ti = getutime() - ti;
3376     if (do_benchmark) {
3377         printf("bench: utime=%0.3fs\n", ti / 1000000.0);
3378     }
3379     av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" frames successfully decoded, %"PRIu64" decoding errors\n",
3380            decode_error_stat[0], decode_error_stat[1]);
3381     if (2*decode_error_stat[0] < decode_error_stat[1])
3382         exit(254);
3383
3384     exit(received_nb_signals ? 255 : 0);
3385     return 0;
3386 }