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