acaa523170fb475e00a6069cb3c52b5335975ead
[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 static void do_video_stats(OutputStream *ost, int frame_size);
113 static int64_t getutime(void);
114
115 static int run_as_daemon  = 0;
116 static int64_t video_size = 0;
117 static int64_t audio_size = 0;
118 static int64_t subtitle_size = 0;
119 static int64_t extra_size = 0;
120 static int nb_frames_dup = 0;
121 static int nb_frames_drop = 0;
122
123 static int current_time;
124 AVIOContext *progress_avio = NULL;
125
126 static uint8_t *subtitle_out;
127
128 #if HAVE_PTHREADS
129 /* signal to input threads that they should exit; set by the main thread */
130 static int transcoding_finished;
131 #endif
132
133 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
134
135 InputStream **input_streams = NULL;
136 int        nb_input_streams = 0;
137 InputFile   **input_files   = NULL;
138 int        nb_input_files   = 0;
139
140 OutputStream **output_streams = NULL;
141 int         nb_output_streams = 0;
142 OutputFile   **output_files   = NULL;
143 int         nb_output_files   = 0;
144
145 FilterGraph **filtergraphs;
146 int        nb_filtergraphs;
147
148 #if HAVE_TERMIOS_H
149
150 /* init terminal so that we can grab keys */
151 static struct termios oldtty;
152 static int restore_tty;
153 #endif
154
155
156 /* sub2video hack:
157    Convert subtitles to video with alpha to insert them in filter graphs.
158    This is a temporary solution until libavfilter gets real subtitles support.
159  */
160
161
162
163 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
164                                 AVSubtitleRect *r)
165 {
166     uint32_t *pal, *dst2;
167     uint8_t *src, *src2;
168     int x, y;
169
170     if (r->type != SUBTITLE_BITMAP) {
171         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
172         return;
173     }
174     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
175         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
176         return;
177     }
178
179     dst += r->y * dst_linesize + r->x * 4;
180     src = r->pict.data[0];
181     pal = (uint32_t *)r->pict.data[1];
182     for (y = 0; y < r->h; y++) {
183         dst2 = (uint32_t *)dst;
184         src2 = src;
185         for (x = 0; x < r->w; x++)
186             *(dst2++) = pal[*(src2++)];
187         dst += dst_linesize;
188         src += r->pict.linesize[0];
189     }
190 }
191
192 static void sub2video_push_ref(InputStream *ist, int64_t pts)
193 {
194     AVFilterBufferRef *ref = ist->sub2video.ref;
195     int i;
196
197     ist->sub2video.last_pts = ref->pts = pts;
198     for (i = 0; i < ist->nb_filters; i++)
199         av_buffersrc_add_ref(ist->filters[i]->filter,
200                              avfilter_ref_buffer(ref, ~0),
201                              AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
202                              AV_BUFFERSRC_FLAG_NO_COPY |
203                              AV_BUFFERSRC_FLAG_PUSH);
204 }
205
206 static void sub2video_update(InputStream *ist, AVSubtitle *sub)
207 {
208     int w = ist->sub2video.w, h = ist->sub2video.h;
209     AVFilterBufferRef *ref = ist->sub2video.ref;
210     int8_t *dst;
211     int     dst_linesize;
212     int num_rects, i;
213     int64_t pts, end_pts;
214
215     if (!ref)
216         return;
217     if (sub) {
218         pts       = av_rescale_q(sub->pts + sub->start_display_time * 1000,
219                                  AV_TIME_BASE_Q, ist->st->time_base);
220         end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000,
221                                  AV_TIME_BASE_Q, ist->st->time_base);
222         num_rects = sub->num_rects;
223     } else {
224         pts       = ist->sub2video.end_pts;
225         end_pts   = INT64_MAX;
226         num_rects = 0;
227     }
228     dst          = ref->data    [0];
229     dst_linesize = ref->linesize[0];
230     memset(dst, 0, h * dst_linesize);
231     for (i = 0; i < num_rects; i++)
232         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
233     sub2video_push_ref(ist, pts);
234     ist->sub2video.end_pts = end_pts;
235 }
236
237 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
238 {
239     InputFile *infile = input_files[ist->file_index];
240     int i, j, nb_reqs;
241     int64_t pts2;
242
243     /* When a frame is read from a file, examine all sub2video streams in
244        the same file and send the sub2video frame again. Otherwise, decoded
245        video frames could be accumulating in the filter graph while a filter
246        (possibly overlay) is desperately waiting for a subtitle frame. */
247     for (i = 0; i < infile->nb_streams; i++) {
248         InputStream *ist2 = input_streams[infile->ist_index + i];
249         if (!ist2->sub2video.ref)
250             continue;
251         /* subtitles seem to be usually muxed ahead of other streams;
252            if not, substracting a larger time here is necessary */
253         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
254         /* do not send the heartbeat frame if the subtitle is already ahead */
255         if (pts2 <= ist2->sub2video.last_pts)
256             continue;
257         if (pts2 >= ist2->sub2video.end_pts)
258             sub2video_update(ist2, NULL);
259         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
260             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
261         if (nb_reqs)
262             sub2video_push_ref(ist2, pts2);
263     }
264 }
265
266 static void sub2video_flush(InputStream *ist)
267 {
268     int i;
269
270     for (i = 0; i < ist->nb_filters; i++)
271         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
272 }
273
274 /* end of sub2video hack */
275
276 void term_exit(void)
277 {
278     av_log(NULL, AV_LOG_QUIET, "%s", "");
279 #if HAVE_TERMIOS_H
280     if(restore_tty)
281         tcsetattr (0, TCSANOW, &oldtty);
282 #endif
283 }
284
285 static volatile int received_sigterm = 0;
286 static volatile int received_nb_signals = 0;
287
288 static void
289 sigterm_handler(int sig)
290 {
291     received_sigterm = sig;
292     received_nb_signals++;
293     term_exit();
294     if(received_nb_signals > 3)
295         exit(123);
296 }
297
298 void term_init(void)
299 {
300 #if HAVE_TERMIOS_H
301     if(!run_as_daemon){
302         struct termios tty;
303         int istty = 1;
304 #if HAVE_ISATTY
305         istty = isatty(0) && isatty(2);
306 #endif
307         if (istty && tcgetattr (0, &tty) == 0) {
308             oldtty = tty;
309             restore_tty = 1;
310             atexit(term_exit);
311
312             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
313                              |INLCR|IGNCR|ICRNL|IXON);
314             tty.c_oflag |= OPOST;
315             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
316             tty.c_cflag &= ~(CSIZE|PARENB);
317             tty.c_cflag |= CS8;
318             tty.c_cc[VMIN] = 1;
319             tty.c_cc[VTIME] = 0;
320
321             tcsetattr (0, TCSANOW, &tty);
322         }
323         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
324     }
325 #endif
326     avformat_network_deinit();
327
328     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
329     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
330 #ifdef SIGXCPU
331     signal(SIGXCPU, sigterm_handler);
332 #endif
333 }
334
335 /* read a key without blocking */
336 static int read_key(void)
337 {
338     unsigned char ch;
339 #if HAVE_TERMIOS_H
340     int n = 1;
341     struct timeval tv;
342     fd_set rfds;
343
344     FD_ZERO(&rfds);
345     FD_SET(0, &rfds);
346     tv.tv_sec = 0;
347     tv.tv_usec = 0;
348     n = select(1, &rfds, NULL, NULL, &tv);
349     if (n > 0) {
350         n = read(0, &ch, 1);
351         if (n == 1)
352             return ch;
353
354         return n;
355     }
356 #elif HAVE_KBHIT
357 #    if HAVE_PEEKNAMEDPIPE
358     static int is_pipe;
359     static HANDLE input_handle;
360     DWORD dw, nchars;
361     if(!input_handle){
362         input_handle = GetStdHandle(STD_INPUT_HANDLE);
363         is_pipe = !GetConsoleMode(input_handle, &dw);
364     }
365
366     if (stdin->_cnt > 0) {
367         read(0, &ch, 1);
368         return ch;
369     }
370     if (is_pipe) {
371         /* When running under a GUI, you will end here. */
372         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
373             // input pipe may have been closed by the program that ran ffmpeg
374             return -1;
375         }
376         //Read it
377         if(nchars != 0) {
378             read(0, &ch, 1);
379             return ch;
380         }else{
381             return -1;
382         }
383     }
384 #    endif
385     if(kbhit())
386         return(getch());
387 #endif
388     return -1;
389 }
390
391 static int decode_interrupt_cb(void *ctx)
392 {
393     return received_nb_signals > 1;
394 }
395
396 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
397
398 static void exit_program(void)
399 {
400     int i, j;
401
402     for (i = 0; i < nb_filtergraphs; i++) {
403         avfilter_graph_free(&filtergraphs[i]->graph);
404         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
405             av_freep(&filtergraphs[i]->inputs[j]->name);
406             av_freep(&filtergraphs[i]->inputs[j]);
407         }
408         av_freep(&filtergraphs[i]->inputs);
409         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
410             av_freep(&filtergraphs[i]->outputs[j]->name);
411             av_freep(&filtergraphs[i]->outputs[j]);
412         }
413         av_freep(&filtergraphs[i]->outputs);
414         av_freep(&filtergraphs[i]);
415     }
416     av_freep(&filtergraphs);
417
418     av_freep(&subtitle_out);
419
420     /* close files */
421     for (i = 0; i < nb_output_files; i++) {
422         AVFormatContext *s = output_files[i]->ctx;
423         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
424             avio_close(s->pb);
425         avformat_free_context(s);
426         av_dict_free(&output_files[i]->opts);
427         av_freep(&output_files[i]);
428     }
429     for (i = 0; i < nb_output_streams; i++) {
430         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
431         while (bsfc) {
432             AVBitStreamFilterContext *next = bsfc->next;
433             av_bitstream_filter_close(bsfc);
434             bsfc = next;
435         }
436         output_streams[i]->bitstream_filters = NULL;
437         avcodec_free_frame(&output_streams[i]->filtered_frame);
438
439         av_freep(&output_streams[i]->forced_keyframes);
440         av_freep(&output_streams[i]->avfilter);
441         av_freep(&output_streams[i]->logfile_prefix);
442         av_freep(&output_streams[i]);
443     }
444     for (i = 0; i < nb_input_files; i++) {
445         avformat_close_input(&input_files[i]->ctx);
446         av_freep(&input_files[i]);
447     }
448     for (i = 0; i < nb_input_streams; i++) {
449         avcodec_free_frame(&input_streams[i]->decoded_frame);
450         av_dict_free(&input_streams[i]->opts);
451         free_buffer_pool(&input_streams[i]->buffer_pool);
452         avfilter_unref_bufferp(&input_streams[i]->sub2video.ref);
453         av_freep(&input_streams[i]->filters);
454         av_freep(&input_streams[i]);
455     }
456
457     if (vstats_file)
458         fclose(vstats_file);
459     av_free(vstats_filename);
460
461     av_freep(&input_streams);
462     av_freep(&input_files);
463     av_freep(&output_streams);
464     av_freep(&output_files);
465
466     uninit_opts();
467
468     avfilter_uninit();
469     avformat_network_deinit();
470
471     if (received_sigterm) {
472         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
473                (int) received_sigterm);
474         exit (255);
475     }
476 }
477
478 void assert_avoptions(AVDictionary *m)
479 {
480     AVDictionaryEntry *t;
481     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
482         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
483         exit(1);
484     }
485 }
486
487 static void abort_codec_experimental(AVCodec *c, int encoder)
488 {
489     exit(1);
490 }
491
492 static void update_benchmark(const char *fmt, ...)
493 {
494     if (do_benchmark_all) {
495         int64_t t = getutime();
496         va_list va;
497         char buf[1024];
498
499         if (fmt) {
500             va_start(va, fmt);
501             vsnprintf(buf, sizeof(buf), fmt, va);
502             va_end(va);
503             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
504         }
505         current_time = t;
506     }
507 }
508
509 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
510 {
511     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
512     AVCodecContext          *avctx = ost->st->codec;
513     int ret;
514
515     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
516         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
517         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
518
519     if ((avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) && pkt->dts != AV_NOPTS_VALUE) {
520         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
521         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
522             av_log(s, max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG,
523                    "st:%d PTS: %"PRId64" DTS: %"PRId64" < %"PRId64" invalid, clipping\n", pkt->stream_index, pkt->pts, pkt->dts, max);
524             if(pkt->pts >= pkt->dts)
525                 pkt->pts = FFMAX(pkt->pts, max);
526             pkt->dts = max;
527         }
528     }
529
530     /*
531      * Audio encoders may split the packets --  #frames in != #packets out.
532      * But there is no reordering, so we can limit the number of output packets
533      * by simply dropping them here.
534      * Counting encoded video frames needs to be done separately because of
535      * reordering, see do_video_out()
536      */
537     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
538         if (ost->frame_number >= ost->max_frames) {
539             av_free_packet(pkt);
540             return;
541         }
542         ost->frame_number++;
543     }
544
545     while (bsfc) {
546         AVPacket new_pkt = *pkt;
547         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
548                                            &new_pkt.data, &new_pkt.size,
549                                            pkt->data, pkt->size,
550                                            pkt->flags & AV_PKT_FLAG_KEY);
551         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
552             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
553             if(t) {
554                 memcpy(t, new_pkt.data, new_pkt.size);
555                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
556                 new_pkt.data = t;
557                 a = 1;
558             } else
559                 a = AVERROR(ENOMEM);
560         }
561         if (a > 0) {
562             av_free_packet(pkt);
563             new_pkt.destruct = av_destruct_packet;
564         } else if (a < 0) {
565             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
566                    bsfc->filter->name, pkt->stream_index,
567                    avctx->codec ? avctx->codec->name : "copy");
568             print_error("", a);
569             if (exit_on_error)
570                 exit(1);
571         }
572         *pkt = new_pkt;
573
574         bsfc = bsfc->next;
575     }
576
577     pkt->stream_index = ost->index;
578
579     if (debug_ts) {
580         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
581                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
582                 av_get_media_type_string(ost->st->codec->codec_type),
583                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
584                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
585                 pkt->size
586               );
587     }
588
589     ret = av_interleaved_write_frame(s, pkt);
590     if (ret < 0) {
591         print_error("av_interleaved_write_frame()", ret);
592         exit(1);
593     }
594 }
595
596 static void close_output_stream(OutputStream *ost)
597 {
598     OutputFile *of = output_files[ost->file_index];
599
600     ost->finished = 1;
601     if (of->shortest) {
602         int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, AV_TIME_BASE_Q);
603         of->recording_time = FFMIN(of->recording_time, end);
604     }
605 }
606
607 static int check_recording_time(OutputStream *ost)
608 {
609     OutputFile *of = output_files[ost->file_index];
610
611     if (of->recording_time != INT64_MAX &&
612         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
613                       AV_TIME_BASE_Q) >= 0) {
614         close_output_stream(ost);
615         return 0;
616     }
617     return 1;
618 }
619
620 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
621                          AVFrame *frame)
622 {
623     AVCodecContext *enc = ost->st->codec;
624     AVPacket pkt;
625     int got_packet = 0;
626
627     av_init_packet(&pkt);
628     pkt.data = NULL;
629     pkt.size = 0;
630
631     if (!check_recording_time(ost))
632         return;
633
634     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
635         frame->pts = ost->sync_opts;
636     ost->sync_opts = frame->pts + frame->nb_samples;
637
638     av_assert0(pkt.size || !pkt.data);
639     update_benchmark(NULL);
640     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
641         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
642         exit(1);
643     }
644     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
645
646     if (got_packet) {
647         if (pkt.pts != AV_NOPTS_VALUE)
648             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
649         if (pkt.dts != AV_NOPTS_VALUE)
650             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
651         if (pkt.duration > 0)
652             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
653
654         if (debug_ts) {
655             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
656                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
657                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
658                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
659         }
660
661         audio_size += pkt.size;
662         write_frame(s, &pkt, ost);
663
664         av_free_packet(&pkt);
665     }
666 }
667
668 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
669 {
670     AVCodecContext *dec;
671     AVPicture *picture2;
672     AVPicture picture_tmp;
673     uint8_t *buf = 0;
674
675     dec = ist->st->codec;
676
677     /* deinterlace : must be done before any resize */
678     if (do_deinterlace) {
679         int size;
680
681         /* create temporary picture */
682         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
683         if (size < 0)
684             return;
685         buf  = av_malloc(size);
686         if (!buf)
687             return;
688
689         picture2 = &picture_tmp;
690         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
691
692         if (avpicture_deinterlace(picture2, picture,
693                                  dec->pix_fmt, dec->width, dec->height) < 0) {
694             /* if error, do not deinterlace */
695             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
696             av_free(buf);
697             buf = NULL;
698             picture2 = picture;
699         }
700     } else {
701         picture2 = picture;
702     }
703
704     if (picture != picture2)
705         *picture = *picture2;
706     *bufp = buf;
707 }
708
709 static void do_subtitle_out(AVFormatContext *s,
710                             OutputStream *ost,
711                             InputStream *ist,
712                             AVSubtitle *sub)
713 {
714     int subtitle_out_max_size = 1024 * 1024;
715     int subtitle_out_size, nb, i;
716     AVCodecContext *enc;
717     AVPacket pkt;
718     int64_t pts;
719
720     if (sub->pts == AV_NOPTS_VALUE) {
721         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
722         if (exit_on_error)
723             exit(1);
724         return;
725     }
726
727     enc = ost->st->codec;
728
729     if (!subtitle_out) {
730         subtitle_out = av_malloc(subtitle_out_max_size);
731     }
732
733     /* Note: DVB subtitle need one packet to draw them and one other
734        packet to clear them */
735     /* XXX: signal it in the codec context ? */
736     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
737         nb = 2;
738     else
739         nb = 1;
740
741     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
742     pts = sub->pts - output_files[ost->file_index]->start_time;
743     for (i = 0; i < nb; i++) {
744         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
745         if (!check_recording_time(ost))
746             return;
747
748         sub->pts = pts;
749         // start_display_time is required to be 0
750         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
751         sub->end_display_time  -= sub->start_display_time;
752         sub->start_display_time = 0;
753         if (i == 1)
754             sub->num_rects = 0;
755         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
756                                                     subtitle_out_max_size, sub);
757         if (subtitle_out_size < 0) {
758             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
759             exit(1);
760         }
761
762         av_init_packet(&pkt);
763         pkt.data = subtitle_out;
764         pkt.size = subtitle_out_size;
765         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
766         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
767         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
768             /* XXX: the pts correction is handled here. Maybe handling
769                it in the codec would be better */
770             if (i == 0)
771                 pkt.pts += 90 * sub->start_display_time;
772             else
773                 pkt.pts += 90 * sub->end_display_time;
774         }
775         subtitle_size += pkt.size;
776         write_frame(s, &pkt, ost);
777     }
778 }
779
780 static void do_video_out(AVFormatContext *s,
781                          OutputStream *ost,
782                          AVFrame *in_picture)
783 {
784     int ret, format_video_sync;
785     AVPacket pkt;
786     AVCodecContext *enc = ost->st->codec;
787     int nb_frames, i;
788     double sync_ipts, delta;
789     double duration = 0;
790     int frame_size = 0;
791     InputStream *ist = NULL;
792
793     if (ost->source_index >= 0)
794         ist = input_streams[ost->source_index];
795
796     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
797         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
798
799     sync_ipts = in_picture->pts;
800     delta = sync_ipts - ost->sync_opts + duration;
801
802     /* by default, we output a single frame */
803     nb_frames = 1;
804
805     format_video_sync = video_sync_method;
806     if (format_video_sync == VSYNC_AUTO)
807         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
808
809     switch (format_video_sync) {
810     case VSYNC_CFR:
811         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
812         if (delta < -1.1)
813             nb_frames = 0;
814         else if (delta > 1.1)
815             nb_frames = lrintf(delta);
816         break;
817     case VSYNC_VFR:
818         if (delta <= -0.6)
819             nb_frames = 0;
820         else if (delta > 0.6)
821             ost->sync_opts = lrint(sync_ipts);
822         break;
823     case VSYNC_DROP:
824     case VSYNC_PASSTHROUGH:
825         ost->sync_opts = lrint(sync_ipts);
826         break;
827     default:
828         av_assert0(0);
829     }
830
831     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
832     if (nb_frames == 0) {
833         nb_frames_drop++;
834         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
835         return;
836     } else if (nb_frames > 1) {
837         if (nb_frames > dts_error_threshold * 30) {
838             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
839             nb_frames_drop++;
840             return;
841         }
842         nb_frames_dup += nb_frames - 1;
843         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
844     }
845
846   /* duplicates frame if needed */
847   for (i = 0; i < nb_frames; i++) {
848     av_init_packet(&pkt);
849     pkt.data = NULL;
850     pkt.size = 0;
851
852     in_picture->pts = ost->sync_opts;
853
854     if (!check_recording_time(ost))
855         return;
856
857     if (s->oformat->flags & AVFMT_RAWPICTURE &&
858         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
859         /* raw pictures are written as AVPicture structure to
860            avoid any copies. We support temporarily the older
861            method. */
862         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
863         enc->coded_frame->top_field_first  = in_picture->top_field_first;
864         if (enc->coded_frame->interlaced_frame)
865             enc->field_order = enc->coded_frame->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
866         else
867             enc->field_order = AV_FIELD_PROGRESSIVE;
868         pkt.data   = (uint8_t *)in_picture;
869         pkt.size   =  sizeof(AVPicture);
870         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
871         pkt.flags |= AV_PKT_FLAG_KEY;
872
873         video_size += pkt.size;
874         write_frame(s, &pkt, ost);
875     } else {
876         int got_packet;
877         AVFrame big_picture;
878
879         big_picture = *in_picture;
880         /* better than nothing: use input picture interlaced
881            settings */
882         big_picture.interlaced_frame = in_picture->interlaced_frame;
883         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
884             if (ost->top_field_first == -1)
885                 big_picture.top_field_first = in_picture->top_field_first;
886             else
887                 big_picture.top_field_first = !!ost->top_field_first;
888         }
889
890         if (big_picture.interlaced_frame) {
891             if (enc->codec->id == AV_CODEC_ID_MJPEG)
892                 enc->field_order = big_picture.top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
893             else
894                 enc->field_order = big_picture.top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
895         } else
896             enc->field_order = AV_FIELD_PROGRESSIVE;
897
898         big_picture.quality = ost->st->codec->global_quality;
899         if (!enc->me_threshold)
900             big_picture.pict_type = 0;
901         if (ost->forced_kf_index < ost->forced_kf_count &&
902             big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
903             big_picture.pict_type = AV_PICTURE_TYPE_I;
904             ost->forced_kf_index++;
905         }
906         update_benchmark(NULL);
907         ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
908         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
909         if (ret < 0) {
910             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
911             exit(1);
912         }
913
914         if (got_packet) {
915             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
916                 pkt.pts = ost->sync_opts;
917
918             if (pkt.pts != AV_NOPTS_VALUE)
919                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
920             if (pkt.dts != AV_NOPTS_VALUE)
921                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
922
923             if (debug_ts) {
924                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
925                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
926                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
927                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
928             }
929
930             frame_size = pkt.size;
931             video_size += pkt.size;
932             write_frame(s, &pkt, ost);
933             av_free_packet(&pkt);
934
935             /* if two pass, output log */
936             if (ost->logfile && enc->stats_out) {
937                 fprintf(ost->logfile, "%s", enc->stats_out);
938             }
939         }
940     }
941     ost->sync_opts++;
942     /*
943      * For video, number of frames in == number of packets out.
944      * But there may be reordering, so we can't throw away frames on encoder
945      * flush, we need to limit them here, before they go into encoder.
946      */
947     ost->frame_number++;
948   }
949
950     if (vstats_filename && frame_size)
951         do_video_stats(ost, frame_size);
952 }
953
954 static double psnr(double d)
955 {
956     return -10.0 * log(d) / log(10.0);
957 }
958
959 static void do_video_stats(OutputStream *ost, int frame_size)
960 {
961     AVCodecContext *enc;
962     int frame_number;
963     double ti1, bitrate, avg_bitrate;
964
965     /* this is executed just the first time do_video_stats is called */
966     if (!vstats_file) {
967         vstats_file = fopen(vstats_filename, "w");
968         if (!vstats_file) {
969             perror("fopen");
970             exit(1);
971         }
972     }
973
974     enc = ost->st->codec;
975     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
976         frame_number = ost->st->nb_frames;
977         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
978         if (enc->flags&CODEC_FLAG_PSNR)
979             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
980
981         fprintf(vstats_file,"f_size= %6d ", frame_size);
982         /* compute pts value */
983         ti1 = ost->st->pts.val * av_q2d(enc->time_base);
984         if (ti1 < 0.01)
985             ti1 = 0.01;
986
987         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
988         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
989         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
990                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
991         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
992     }
993 }
994
995 /**
996  * Get and encode new output from any of the filtergraphs, without causing
997  * activity.
998  *
999  * @return  0 for success, <0 for severe errors
1000  */
1001 static int reap_filters(void)
1002 {
1003     AVFilterBufferRef *picref;
1004     AVFrame *filtered_frame = NULL;
1005     int i;
1006     int64_t frame_pts;
1007
1008     /* Reap all buffers present in the buffer sinks */
1009     for (i = 0; i < nb_output_streams; i++) {
1010         OutputStream *ost = output_streams[i];
1011         OutputFile    *of = output_files[ost->file_index];
1012         int ret = 0;
1013
1014         if (!ost->filter)
1015             continue;
1016
1017         if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1018             return AVERROR(ENOMEM);
1019         } else
1020             avcodec_get_frame_defaults(ost->filtered_frame);
1021         filtered_frame = ost->filtered_frame;
1022
1023         while (1) {
1024             ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
1025                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1026             if (ret < 0) {
1027                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1028                     char buf[256];
1029                     av_strerror(ret, buf, sizeof(buf));
1030                     av_log(NULL, AV_LOG_WARNING,
1031                            "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
1032                 }
1033                 break;
1034             }
1035             frame_pts = AV_NOPTS_VALUE;
1036             if (picref->pts != AV_NOPTS_VALUE) {
1037                 filtered_frame->pts = frame_pts = av_rescale_q(picref->pts,
1038                                                 ost->filter->filter->inputs[0]->time_base,
1039                                                 ost->st->codec->time_base) -
1040                                     av_rescale_q(of->start_time,
1041                                                 AV_TIME_BASE_Q,
1042                                                 ost->st->codec->time_base);
1043
1044                 if (of->start_time && filtered_frame->pts < 0) {
1045                     avfilter_unref_buffer(picref);
1046                     continue;
1047                 }
1048             }
1049             //if (ost->source_index >= 0)
1050             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1051
1052
1053             switch (ost->filter->filter->inputs[0]->type) {
1054             case AVMEDIA_TYPE_VIDEO:
1055                 avfilter_copy_buf_props(filtered_frame, picref);
1056                 filtered_frame->pts = frame_pts;
1057                 if (!ost->frame_aspect_ratio)
1058                     ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
1059
1060                 do_video_out(of->ctx, ost, filtered_frame);
1061                 break;
1062             case AVMEDIA_TYPE_AUDIO:
1063                 avfilter_copy_buf_props(filtered_frame, picref);
1064                 filtered_frame->pts = frame_pts;
1065                 do_audio_out(of->ctx, ost, filtered_frame);
1066                 break;
1067             default:
1068                 // TODO support subtitle filters
1069                 av_assert0(0);
1070             }
1071
1072             avfilter_unref_buffer(picref);
1073         }
1074     }
1075
1076     return 0;
1077 }
1078
1079 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1080 {
1081     char buf[1024];
1082     AVBPrint buf_script;
1083     OutputStream *ost;
1084     AVFormatContext *oc;
1085     int64_t total_size;
1086     AVCodecContext *enc;
1087     int frame_number, vid, i;
1088     double bitrate;
1089     int64_t pts = INT64_MIN;
1090     static int64_t last_time = -1;
1091     static int qp_histogram[52];
1092     int hours, mins, secs, us;
1093
1094     if (!print_stats && !is_last_report && !progress_avio)
1095         return;
1096
1097     if (!is_last_report) {
1098         if (last_time == -1) {
1099             last_time = cur_time;
1100             return;
1101         }
1102         if ((cur_time - last_time) < 500000)
1103             return;
1104         last_time = cur_time;
1105     }
1106
1107
1108     oc = output_files[0]->ctx;
1109
1110     total_size = avio_size(oc->pb);
1111     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1112         total_size = avio_tell(oc->pb);
1113
1114     buf[0] = '\0';
1115     vid = 0;
1116     av_bprint_init(&buf_script, 0, 1);
1117     for (i = 0; i < nb_output_streams; i++) {
1118         float q = -1;
1119         ost = output_streams[i];
1120         enc = ost->st->codec;
1121         if (!ost->stream_copy && enc->coded_frame)
1122             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1123         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1124             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1125             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1126                        ost->file_index, ost->index, q);
1127         }
1128         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1129             float fps, t = (cur_time-timer_start) / 1000000.0;
1130
1131             frame_number = ost->frame_number;
1132             fps = t > 1 ? frame_number / t : 0;
1133             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1134                      frame_number, fps < 9.95, fps, q);
1135             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1136             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1137             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1138                        ost->file_index, ost->index, q);
1139             if (is_last_report)
1140                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1141             if (qp_hist) {
1142                 int j;
1143                 int qp = lrintf(q);
1144                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1145                     qp_histogram[qp]++;
1146                 for (j = 0; j < 32; j++)
1147                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1148             }
1149             if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1150                 int j;
1151                 double error, error_sum = 0;
1152                 double scale, scale_sum = 0;
1153                 double p;
1154                 char type[3] = { 'Y','U','V' };
1155                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1156                 for (j = 0; j < 3; j++) {
1157                     if (is_last_report) {
1158                         error = enc->error[j];
1159                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1160                     } else {
1161                         error = enc->coded_frame->error[j];
1162                         scale = enc->width * enc->height * 255.0 * 255.0;
1163                     }
1164                     if (j)
1165                         scale /= 4;
1166                     error_sum += error;
1167                     scale_sum += scale;
1168                     p = psnr(error / scale);
1169                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1170                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1171                                ost->file_index, ost->index, type[i] | 32, p);
1172                 }
1173                 p = psnr(error_sum / scale_sum);
1174                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1175                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1176                            ost->file_index, ost->index, p);
1177             }
1178             vid = 1;
1179         }
1180         /* compute min output value */
1181         if ((is_last_report || !ost->finished) && ost->st->pts.val != AV_NOPTS_VALUE)
1182             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1183                                           ost->st->time_base, AV_TIME_BASE_Q));
1184     }
1185
1186     secs = pts / AV_TIME_BASE;
1187     us = pts % AV_TIME_BASE;
1188     mins = secs / 60;
1189     secs %= 60;
1190     hours = mins / 60;
1191     mins %= 60;
1192
1193     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1194
1195     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1196                                  "size=N/A time=");
1197     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1198                                  "size=%8.0fkB time=", total_size / 1024.0);
1199     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1200              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1201              (100 * us) / AV_TIME_BASE);
1202     if (bitrate < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1203                               "bitrate=N/A");
1204     else             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1205                               "bitrate=%6.1fkbits/s", bitrate);
1206     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
1207     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1208     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1209     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1210                hours, mins, secs, us);
1211
1212     if (nb_frames_dup || nb_frames_drop)
1213         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1214                 nb_frames_dup, nb_frames_drop);
1215     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1216     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1217
1218     if (print_stats || is_last_report) {
1219     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1220
1221     fflush(stderr);
1222     }
1223
1224     if (progress_avio) {
1225         av_bprintf(&buf_script, "progress=%s\n",
1226                    is_last_report ? "end" : "continue");
1227         avio_write(progress_avio, buf_script.str,
1228                    FFMIN(buf_script.len, buf_script.size - 1));
1229         avio_flush(progress_avio);
1230         av_bprint_finalize(&buf_script, NULL);
1231         if (is_last_report) {
1232             avio_close(progress_avio);
1233             progress_avio = NULL;
1234         }
1235     }
1236
1237     if (is_last_report) {
1238         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1239         av_log(NULL, AV_LOG_INFO, "\n");
1240         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1241                video_size / 1024.0,
1242                audio_size / 1024.0,
1243                subtitle_size / 1024.0,
1244                extra_size / 1024.0,
1245                100.0 * (total_size - raw) / raw
1246         );
1247         if(video_size + audio_size + subtitle_size + extra_size == 0){
1248             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1249         }
1250     }
1251 }
1252
1253 static void flush_encoders(void)
1254 {
1255     int i, ret;
1256
1257     for (i = 0; i < nb_output_streams; i++) {
1258         OutputStream   *ost = output_streams[i];
1259         AVCodecContext *enc = ost->st->codec;
1260         AVFormatContext *os = output_files[ost->file_index]->ctx;
1261         int stop_encoding = 0;
1262
1263         if (!ost->encoding_needed)
1264             continue;
1265
1266         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1267             continue;
1268         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1269             continue;
1270
1271         for (;;) {
1272             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1273             const char *desc;
1274             int64_t *size;
1275
1276             switch (ost->st->codec->codec_type) {
1277             case AVMEDIA_TYPE_AUDIO:
1278                 encode = avcodec_encode_audio2;
1279                 desc   = "Audio";
1280                 size   = &audio_size;
1281                 break;
1282             case AVMEDIA_TYPE_VIDEO:
1283                 encode = avcodec_encode_video2;
1284                 desc   = "Video";
1285                 size   = &video_size;
1286                 break;
1287             default:
1288                 stop_encoding = 1;
1289             }
1290
1291             if (encode) {
1292                 AVPacket pkt;
1293                 int got_packet;
1294                 av_init_packet(&pkt);
1295                 pkt.data = NULL;
1296                 pkt.size = 0;
1297
1298                 update_benchmark(NULL);
1299                 ret = encode(enc, &pkt, NULL, &got_packet);
1300                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1301                 if (ret < 0) {
1302                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1303                     exit(1);
1304                 }
1305                 *size += pkt.size;
1306                 if (ost->logfile && enc->stats_out) {
1307                     fprintf(ost->logfile, "%s", enc->stats_out);
1308                 }
1309                 if (!got_packet) {
1310                     stop_encoding = 1;
1311                     break;
1312                 }
1313                 if (pkt.pts != AV_NOPTS_VALUE)
1314                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1315                 if (pkt.dts != AV_NOPTS_VALUE)
1316                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1317                 if (pkt.duration > 0)
1318                     pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1319                 write_frame(os, &pkt, ost);
1320                 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
1321                     do_video_stats(ost, pkt.size);
1322                 }
1323             }
1324
1325             if (stop_encoding)
1326                 break;
1327         }
1328     }
1329 }
1330
1331 /*
1332  * Check whether a packet from ist should be written into ost at this time
1333  */
1334 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1335 {
1336     OutputFile *of = output_files[ost->file_index];
1337     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1338
1339     if (ost->source_index != ist_index)
1340         return 0;
1341
1342     if (of->start_time && ist->pts < of->start_time)
1343         return 0;
1344
1345     return 1;
1346 }
1347
1348 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1349 {
1350     OutputFile *of = output_files[ost->file_index];
1351     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1352     AVPicture pict;
1353     AVPacket opkt;
1354
1355     av_init_packet(&opkt);
1356
1357     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1358         !ost->copy_initial_nonkeyframes)
1359         return;
1360
1361     if (!ost->frame_number && ist->pts < of->start_time &&
1362         !ost->copy_prior_start)
1363         return;
1364
1365     if (of->recording_time != INT64_MAX &&
1366         ist->pts >= of->recording_time + of->start_time) {
1367         close_output_stream(ost);
1368         return;
1369     }
1370
1371     /* force the input stream PTS */
1372     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1373         audio_size += pkt->size;
1374     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1375         video_size += pkt->size;
1376         ost->sync_opts++;
1377     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1378         subtitle_size += pkt->size;
1379     }
1380
1381     if (pkt->pts != AV_NOPTS_VALUE)
1382         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1383     else
1384         opkt.pts = AV_NOPTS_VALUE;
1385
1386     if (pkt->dts == AV_NOPTS_VALUE)
1387         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1388     else
1389         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1390     opkt.dts -= ost_tb_start_time;
1391
1392     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1393         int duration = av_get_audio_frame_duration(ist->st->codec, pkt->size);
1394         if(!duration)
1395             duration = ist->st->codec->frame_size;
1396         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1397                                                (AVRational){1, ist->st->codec->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
1398                                                ost->st->time_base) - ost_tb_start_time;
1399     }
1400
1401     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1402     opkt.flags    = pkt->flags;
1403
1404     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1405     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1406        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1407        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1408        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1409        ) {
1410         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1411             opkt.destruct = av_destruct_packet;
1412     } else {
1413         opkt.data = pkt->data;
1414         opkt.size = pkt->size;
1415     }
1416
1417     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1418         /* store AVPicture in AVPacket, as expected by the output format */
1419         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1420         opkt.data = (uint8_t *)&pict;
1421         opkt.size = sizeof(AVPicture);
1422         opkt.flags |= AV_PKT_FLAG_KEY;
1423     }
1424
1425     write_frame(of->ctx, &opkt, ost);
1426     ost->st->codec->frame_number++;
1427 }
1428
1429 static void rate_emu_sleep(InputStream *ist)
1430 {
1431     if (input_files[ist->file_index]->rate_emu) {
1432         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
1433         int64_t now = av_gettime() - ist->start;
1434         if (pts > now)
1435             av_usleep(pts - now);
1436     }
1437 }
1438
1439 int guess_input_channel_layout(InputStream *ist)
1440 {
1441     AVCodecContext *dec = ist->st->codec;
1442
1443     if (!dec->channel_layout) {
1444         char layout_name[256];
1445
1446         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1447         if (!dec->channel_layout)
1448             return 0;
1449         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1450                                      dec->channels, dec->channel_layout);
1451         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1452                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1453     }
1454     return 1;
1455 }
1456
1457 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1458 {
1459     AVFrame *decoded_frame;
1460     AVCodecContext *avctx = ist->st->codec;
1461     int i, ret, resample_changed;
1462     AVRational decoded_frame_tb;
1463
1464     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1465         return AVERROR(ENOMEM);
1466     decoded_frame = ist->decoded_frame;
1467
1468     update_benchmark(NULL);
1469     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1470     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1471
1472     if (ret >= 0 && avctx->sample_rate <= 0) {
1473         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1474         ret = AVERROR_INVALIDDATA;
1475     }
1476
1477     if (!*got_output || ret < 0) {
1478         if (!pkt->size) {
1479             for (i = 0; i < ist->nb_filters; i++)
1480                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1481         }
1482         return ret;
1483     }
1484
1485 #if 1
1486     /* increment next_dts to use for the case where the input stream does not
1487        have timestamps or there are multiple frames in the packet */
1488     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1489                      avctx->sample_rate;
1490     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1491                      avctx->sample_rate;
1492 #endif
1493
1494     rate_emu_sleep(ist);
1495
1496     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1497                        ist->resample_channels       != avctx->channels               ||
1498                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1499                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1500     if (resample_changed) {
1501         char layout1[64], layout2[64];
1502
1503         if (!guess_input_channel_layout(ist)) {
1504             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1505                    "layout for Input Stream #%d.%d\n", ist->file_index,
1506                    ist->st->index);
1507             exit(1);
1508         }
1509         decoded_frame->channel_layout = avctx->channel_layout;
1510
1511         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1512                                      ist->resample_channel_layout);
1513         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1514                                      decoded_frame->channel_layout);
1515
1516         av_log(NULL, AV_LOG_INFO,
1517                "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",
1518                ist->file_index, ist->st->index,
1519                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1520                ist->resample_channels, layout1,
1521                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1522                avctx->channels, layout2);
1523
1524         ist->resample_sample_fmt     = decoded_frame->format;
1525         ist->resample_sample_rate    = decoded_frame->sample_rate;
1526         ist->resample_channel_layout = decoded_frame->channel_layout;
1527         ist->resample_channels       = avctx->channels;
1528
1529         for (i = 0; i < nb_filtergraphs; i++)
1530             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1531                 FilterGraph *fg = filtergraphs[i];
1532                 int j;
1533                 if (configure_filtergraph(fg) < 0) {
1534                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1535                     exit(1);
1536                 }
1537                 for (j = 0; j < fg->nb_outputs; j++) {
1538                     OutputStream *ost = fg->outputs[j]->ost;
1539                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1540                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1541                         av_buffersink_set_frame_size(ost->filter->filter,
1542                                                      ost->st->codec->frame_size);
1543                 }
1544             }
1545     }
1546
1547     /* if the decoder provides a pts, use it instead of the last packet pts.
1548        the decoder could be delaying output by a packet or more. */
1549     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1550         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1551         decoded_frame_tb   = avctx->time_base;
1552     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1553         decoded_frame->pts = decoded_frame->pkt_pts;
1554         pkt->pts           = AV_NOPTS_VALUE;
1555         decoded_frame_tb   = ist->st->time_base;
1556     } else if (pkt->pts != AV_NOPTS_VALUE) {
1557         decoded_frame->pts = pkt->pts;
1558         pkt->pts           = AV_NOPTS_VALUE;
1559         decoded_frame_tb   = ist->st->time_base;
1560     }else {
1561         decoded_frame->pts = ist->dts;
1562         decoded_frame_tb   = AV_TIME_BASE_Q;
1563     }
1564     if (decoded_frame->pts != AV_NOPTS_VALUE)
1565         decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
1566                                               (AVRational){1, ist->st->codec->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
1567                                               (AVRational){1, ist->st->codec->sample_rate});
1568     for (i = 0; i < ist->nb_filters; i++)
1569         av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame,
1570                                AV_BUFFERSRC_FLAG_PUSH);
1571
1572     decoded_frame->pts = AV_NOPTS_VALUE;
1573
1574     return ret;
1575 }
1576
1577 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1578 {
1579     AVFrame *decoded_frame;
1580     void *buffer_to_free = NULL;
1581     int i, ret = 0, resample_changed;
1582     int64_t best_effort_timestamp;
1583     AVRational *frame_sample_aspect;
1584
1585     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1586         return AVERROR(ENOMEM);
1587     decoded_frame = ist->decoded_frame;
1588     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1589
1590     update_benchmark(NULL);
1591     ret = avcodec_decode_video2(ist->st->codec,
1592                                 decoded_frame, got_output, pkt);
1593     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1594     if (!*got_output || ret < 0) {
1595         if (!pkt->size) {
1596             for (i = 0; i < ist->nb_filters; i++)
1597                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1598         }
1599         return ret;
1600     }
1601
1602     if(ist->top_field_first>=0)
1603         decoded_frame->top_field_first = ist->top_field_first;
1604
1605     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1606     if(best_effort_timestamp != AV_NOPTS_VALUE)
1607         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1608
1609     if (debug_ts) {
1610         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1611                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1612                 ist->st->index, av_ts2str(decoded_frame->pts),
1613                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1614                 best_effort_timestamp,
1615                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1616                 decoded_frame->key_frame, decoded_frame->pict_type);
1617     }
1618
1619     pkt->size = 0;
1620     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1621
1622     rate_emu_sleep(ist);
1623
1624     if (ist->st->sample_aspect_ratio.num)
1625         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1626
1627     resample_changed = ist->resample_width   != decoded_frame->width  ||
1628                        ist->resample_height  != decoded_frame->height ||
1629                        ist->resample_pix_fmt != decoded_frame->format;
1630     if (resample_changed) {
1631         av_log(NULL, AV_LOG_INFO,
1632                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1633                ist->file_index, ist->st->index,
1634                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1635                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1636
1637         ist->resample_width   = decoded_frame->width;
1638         ist->resample_height  = decoded_frame->height;
1639         ist->resample_pix_fmt = decoded_frame->format;
1640
1641         for (i = 0; i < nb_filtergraphs; i++) {
1642             if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
1643                 configure_filtergraph(filtergraphs[i]) < 0) {
1644                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1645                 exit(1);
1646             }
1647         }
1648     }
1649
1650     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1651     for (i = 0; i < ist->nb_filters; i++) {
1652         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
1653                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
1654                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
1655
1656         if (!frame_sample_aspect->num)
1657             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1658         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
1659             FrameBuffer      *buf = decoded_frame->opaque;
1660             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1661                                         decoded_frame->data, decoded_frame->linesize,
1662                                         AV_PERM_READ | AV_PERM_PRESERVE,
1663                                         ist->st->codec->width, ist->st->codec->height,
1664                                         ist->st->codec->pix_fmt);
1665
1666             avfilter_copy_frame_props(fb, decoded_frame);
1667             fb->buf->priv           = buf;
1668             fb->buf->free           = filter_release_buffer;
1669
1670             av_assert0(buf->refcount>0);
1671             buf->refcount++;
1672             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
1673                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
1674                                  AV_BUFFERSRC_FLAG_NO_COPY |
1675                                  AV_BUFFERSRC_FLAG_PUSH);
1676         } else
1677         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, AV_BUFFERSRC_FLAG_PUSH)<0) {
1678             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
1679             exit(1);
1680         }
1681
1682     }
1683
1684     av_free(buffer_to_free);
1685     return ret;
1686 }
1687
1688 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1689 {
1690     AVSubtitle subtitle;
1691     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1692                                           &subtitle, got_output, pkt);
1693     if (ret < 0 || !*got_output) {
1694         if (!pkt->size)
1695             sub2video_flush(ist);
1696         return ret;
1697     }
1698
1699     if (ist->fix_sub_duration) {
1700         if (ist->prev_sub.got_output) {
1701             int end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1702                                  1000, AV_TIME_BASE);
1703             if (end < ist->prev_sub.subtitle.end_display_time) {
1704                 av_log(ist->st->codec, AV_LOG_DEBUG,
1705                        "Subtitle duration reduced from %d to %d\n",
1706                        ist->prev_sub.subtitle.end_display_time, end);
1707                 ist->prev_sub.subtitle.end_display_time = end;
1708             }
1709         }
1710         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1711         FFSWAP(int,        ret,         ist->prev_sub.ret);
1712         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1713     }
1714
1715     sub2video_update(ist, &subtitle);
1716
1717     if (!*got_output || !subtitle.num_rects)
1718         return ret;
1719
1720     rate_emu_sleep(ist);
1721
1722     for (i = 0; i < nb_output_streams; i++) {
1723         OutputStream *ost = output_streams[i];
1724
1725         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1726             continue;
1727
1728         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
1729     }
1730
1731     avsubtitle_free(&subtitle);
1732     return ret;
1733 }
1734
1735 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1736 static int output_packet(InputStream *ist, const AVPacket *pkt)
1737 {
1738     int ret = 0, i;
1739     int got_output;
1740
1741     AVPacket avpkt;
1742     if (!ist->saw_first_ts) {
1743         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;
1744         ist->pts = 0;
1745         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1746             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1747             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1748         }
1749         ist->saw_first_ts = 1;
1750     }
1751
1752     if (ist->next_dts == AV_NOPTS_VALUE)
1753         ist->next_dts = ist->dts;
1754     if (ist->next_pts == AV_NOPTS_VALUE)
1755         ist->next_pts = ist->pts;
1756
1757     if (pkt == NULL) {
1758         /* EOF handling */
1759         av_init_packet(&avpkt);
1760         avpkt.data = NULL;
1761         avpkt.size = 0;
1762         goto handle_eof;
1763     } else {
1764         avpkt = *pkt;
1765     }
1766
1767     if (pkt->dts != AV_NOPTS_VALUE) {
1768         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1769         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1770             ist->next_pts = ist->pts = ist->dts;
1771     }
1772
1773     // while we have more to decode or while the decoder did output something on EOF
1774     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1775         int duration;
1776     handle_eof:
1777
1778         ist->pts = ist->next_pts;
1779         ist->dts = ist->next_dts;
1780
1781         if (avpkt.size && avpkt.size != pkt->size) {
1782             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1783                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1784             ist->showed_multi_packet_warning = 1;
1785         }
1786
1787         switch (ist->st->codec->codec_type) {
1788         case AVMEDIA_TYPE_AUDIO:
1789             ret = decode_audio    (ist, &avpkt, &got_output);
1790             break;
1791         case AVMEDIA_TYPE_VIDEO:
1792             ret = decode_video    (ist, &avpkt, &got_output);
1793             if (avpkt.duration) {
1794                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1795             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1796                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1797                 duration = ((int64_t)AV_TIME_BASE *
1798                                 ist->st->codec->time_base.num * ticks) /
1799                                 ist->st->codec->time_base.den;
1800             } else
1801                 duration = 0;
1802
1803             if(ist->dts != AV_NOPTS_VALUE && duration) {
1804                 ist->next_dts += duration;
1805             }else
1806                 ist->next_dts = AV_NOPTS_VALUE;
1807
1808             if (got_output)
1809                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1810             break;
1811         case AVMEDIA_TYPE_SUBTITLE:
1812             ret = transcode_subtitles(ist, &avpkt, &got_output);
1813             break;
1814         default:
1815             return -1;
1816         }
1817
1818         if (ret < 0)
1819             return ret;
1820
1821         avpkt.dts=
1822         avpkt.pts= AV_NOPTS_VALUE;
1823
1824         // touch data and size only if not EOF
1825         if (pkt) {
1826             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1827                 ret = avpkt.size;
1828             avpkt.data += ret;
1829             avpkt.size -= ret;
1830         }
1831         if (!got_output) {
1832             continue;
1833         }
1834     }
1835
1836     /* handle stream copy */
1837     if (!ist->decoding_needed) {
1838         rate_emu_sleep(ist);
1839         ist->dts = ist->next_dts;
1840         switch (ist->st->codec->codec_type) {
1841         case AVMEDIA_TYPE_AUDIO:
1842             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1843                              ist->st->codec->sample_rate;
1844             break;
1845         case AVMEDIA_TYPE_VIDEO:
1846             if (pkt->duration) {
1847                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1848             } else if(ist->st->codec->time_base.num != 0) {
1849                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1850                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1851                                   ist->st->codec->time_base.num * ticks) /
1852                                   ist->st->codec->time_base.den;
1853             }
1854             break;
1855         }
1856         ist->pts = ist->dts;
1857         ist->next_pts = ist->next_dts;
1858     }
1859     for (i = 0; pkt && i < nb_output_streams; i++) {
1860         OutputStream *ost = output_streams[i];
1861
1862         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1863             continue;
1864
1865         do_streamcopy(ist, ost, pkt);
1866     }
1867
1868     return 0;
1869 }
1870
1871 static void print_sdp(void)
1872 {
1873     char sdp[2048];
1874     int i;
1875     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1876
1877     if (!avc)
1878         exit(1);
1879     for (i = 0; i < nb_output_files; i++)
1880         avc[i] = output_files[i]->ctx;
1881
1882     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1883     printf("SDP:\n%s\n", sdp);
1884     fflush(stdout);
1885     av_freep(&avc);
1886 }
1887
1888 static int init_input_stream(int ist_index, char *error, int error_len)
1889 {
1890     int ret;
1891     InputStream *ist = input_streams[ist_index];
1892
1893     if (ist->decoding_needed) {
1894         AVCodec *codec = ist->dec;
1895         if (!codec) {
1896             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1897                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1898             return AVERROR(EINVAL);
1899         }
1900
1901         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
1902         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
1903             ist->st->codec->get_buffer     = codec_get_buffer;
1904             ist->st->codec->release_buffer = codec_release_buffer;
1905             ist->st->codec->opaque         = &ist->buffer_pool;
1906         }
1907
1908         if (!av_dict_get(ist->opts, "threads", NULL, 0))
1909             av_dict_set(&ist->opts, "threads", "auto", 0);
1910         if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
1911             if (ret == AVERROR_EXPERIMENTAL)
1912                 abort_codec_experimental(codec, 0);
1913             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1914                     ist->file_index, ist->st->index);
1915             return ret;
1916         }
1917         assert_avoptions(ist->opts);
1918     }
1919
1920     ist->next_pts = AV_NOPTS_VALUE;
1921     ist->next_dts = AV_NOPTS_VALUE;
1922     ist->is_start = 1;
1923
1924     return 0;
1925 }
1926
1927 static InputStream *get_input_stream(OutputStream *ost)
1928 {
1929     if (ost->source_index >= 0)
1930         return input_streams[ost->source_index];
1931     return NULL;
1932 }
1933
1934 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1935                                     AVCodecContext *avctx)
1936 {
1937     char *p;
1938     int n = 1, i;
1939     int64_t t;
1940
1941     for (p = kf; *p; p++)
1942         if (*p == ',')
1943             n++;
1944     ost->forced_kf_count = n;
1945     ost->forced_kf_pts   = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1946     if (!ost->forced_kf_pts) {
1947         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1948         exit(1);
1949     }
1950
1951     p = kf;
1952     for (i = 0; i < n; i++) {
1953         char *next = strchr(p, ',');
1954
1955         if (next)
1956             *next++ = 0;
1957
1958         t = parse_time_or_die("force_key_frames", p, 1);
1959         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1960
1961         p = next;
1962     }
1963 }
1964
1965 static void report_new_stream(int input_index, AVPacket *pkt)
1966 {
1967     InputFile *file = input_files[input_index];
1968     AVStream *st = file->ctx->streams[pkt->stream_index];
1969
1970     if (pkt->stream_index < file->nb_streams_warn)
1971         return;
1972     av_log(file->ctx, AV_LOG_WARNING,
1973            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
1974            av_get_media_type_string(st->codec->codec_type),
1975            input_index, pkt->stream_index,
1976            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
1977     file->nb_streams_warn = pkt->stream_index + 1;
1978 }
1979
1980 static int transcode_init(void)
1981 {
1982     int ret = 0, i, j, k;
1983     AVFormatContext *oc;
1984     AVCodecContext *codec;
1985     OutputStream *ost;
1986     InputStream *ist;
1987     char error[1024];
1988     int want_sdp = 1;
1989
1990     /* init framerate emulation */
1991     for (i = 0; i < nb_input_files; i++) {
1992         InputFile *ifile = input_files[i];
1993         if (ifile->rate_emu)
1994             for (j = 0; j < ifile->nb_streams; j++)
1995                 input_streams[j + ifile->ist_index]->start = av_gettime();
1996     }
1997
1998     /* output stream init */
1999     for (i = 0; i < nb_output_files; i++) {
2000         oc = output_files[i]->ctx;
2001         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2002             av_dump_format(oc, i, oc->filename, 1);
2003             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2004             return AVERROR(EINVAL);
2005         }
2006     }
2007
2008     /* init complex filtergraphs */
2009     for (i = 0; i < nb_filtergraphs; i++)
2010         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2011             return ret;
2012
2013     /* for each output stream, we compute the right encoding parameters */
2014     for (i = 0; i < nb_output_streams; i++) {
2015         AVCodecContext *icodec = NULL;
2016         ost = output_streams[i];
2017         oc  = output_files[ost->file_index]->ctx;
2018         ist = get_input_stream(ost);
2019
2020         if (ost->attachment_filename)
2021             continue;
2022
2023         codec  = ost->st->codec;
2024
2025         if (ist) {
2026             icodec = ist->st->codec;
2027
2028             ost->st->disposition          = ist->st->disposition;
2029             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2030             codec->chroma_sample_location = icodec->chroma_sample_location;
2031         }
2032
2033         if (ost->stream_copy) {
2034             uint64_t extra_size;
2035
2036             av_assert0(ist && !ost->filter);
2037
2038             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2039
2040             if (extra_size > INT_MAX) {
2041                 return AVERROR(EINVAL);
2042             }
2043
2044             /* if stream_copy is selected, no need to decode or encode */
2045             codec->codec_id   = icodec->codec_id;
2046             codec->codec_type = icodec->codec_type;
2047
2048             if (!codec->codec_tag) {
2049                 if (!oc->oformat->codec_tag ||
2050                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2051                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2052                     codec->codec_tag = icodec->codec_tag;
2053             }
2054
2055             codec->bit_rate       = icodec->bit_rate;
2056             codec->rc_max_rate    = icodec->rc_max_rate;
2057             codec->rc_buffer_size = icodec->rc_buffer_size;
2058             codec->field_order    = icodec->field_order;
2059             codec->extradata      = av_mallocz(extra_size);
2060             if (!codec->extradata) {
2061                 return AVERROR(ENOMEM);
2062             }
2063             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2064             codec->extradata_size= icodec->extradata_size;
2065             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2066
2067             codec->time_base = ist->st->time_base;
2068             /*
2069              * Avi is a special case here because it supports variable fps but
2070              * having the fps and timebase differe significantly adds quite some
2071              * overhead
2072              */
2073             if(!strcmp(oc->oformat->name, "avi")) {
2074                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2075                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2076                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2077                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2078                      || copy_tb==2){
2079                     codec->time_base.num = ist->st->r_frame_rate.den;
2080                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2081                     codec->ticks_per_frame = 2;
2082                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2083                                  && av_q2d(ist->st->time_base) < 1.0/500
2084                     || copy_tb==0){
2085                     codec->time_base = icodec->time_base;
2086                     codec->time_base.num *= icodec->ticks_per_frame;
2087                     codec->time_base.den *= 2;
2088                     codec->ticks_per_frame = 2;
2089                 }
2090             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2091                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2092                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2093                       && strcmp(oc->oformat->name, "f4v")
2094             ) {
2095                 if(   copy_tb<0 && icodec->time_base.den
2096                                 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2097                                 && av_q2d(ist->st->time_base) < 1.0/500
2098                    || copy_tb==0){
2099                     codec->time_base = icodec->time_base;
2100                     codec->time_base.num *= icodec->ticks_per_frame;
2101                 }
2102             }
2103
2104             if(ost->frame_rate.num)
2105                 codec->time_base = av_inv_q(ost->frame_rate);
2106
2107             av_reduce(&codec->time_base.num, &codec->time_base.den,
2108                         codec->time_base.num, codec->time_base.den, INT_MAX);
2109
2110             switch (codec->codec_type) {
2111             case AVMEDIA_TYPE_AUDIO:
2112                 if (audio_volume != 256) {
2113                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2114                     exit(1);
2115                 }
2116                 codec->channel_layout     = icodec->channel_layout;
2117                 codec->sample_rate        = icodec->sample_rate;
2118                 codec->channels           = icodec->channels;
2119                 codec->frame_size         = icodec->frame_size;
2120                 codec->audio_service_type = icodec->audio_service_type;
2121                 codec->block_align        = icodec->block_align;
2122                 if((codec->block_align == 1 || codec->block_align == 1152) && codec->codec_id == AV_CODEC_ID_MP3)
2123                     codec->block_align= 0;
2124                 if(codec->codec_id == AV_CODEC_ID_AC3)
2125                     codec->block_align= 0;
2126                 break;
2127             case AVMEDIA_TYPE_VIDEO:
2128                 codec->pix_fmt            = icodec->pix_fmt;
2129                 codec->width              = icodec->width;
2130                 codec->height             = icodec->height;
2131                 codec->has_b_frames       = icodec->has_b_frames;
2132                 if (!codec->sample_aspect_ratio.num) {
2133                     codec->sample_aspect_ratio   =
2134                     ost->st->sample_aspect_ratio =
2135                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2136                         ist->st->codec->sample_aspect_ratio.num ?
2137                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2138                 }
2139                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2140                 break;
2141             case AVMEDIA_TYPE_SUBTITLE:
2142                 codec->width  = icodec->width;
2143                 codec->height = icodec->height;
2144                 break;
2145             case AVMEDIA_TYPE_DATA:
2146             case AVMEDIA_TYPE_ATTACHMENT:
2147                 break;
2148             default:
2149                 abort();
2150             }
2151         } else {
2152             if (!ost->enc)
2153                 ost->enc = avcodec_find_encoder(codec->codec_id);
2154             if (!ost->enc) {
2155                 /* should only happen when a default codec is not present. */
2156                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2157                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2158                 ret = AVERROR(EINVAL);
2159                 goto dump_format;
2160             }
2161
2162             if (ist)
2163                 ist->decoding_needed++;
2164             ost->encoding_needed = 1;
2165
2166             if (!ost->filter &&
2167                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2168                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2169                     FilterGraph *fg;
2170                     fg = init_simple_filtergraph(ist, ost);
2171                     if (configure_filtergraph(fg)) {
2172                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2173                         exit(1);
2174                     }
2175             }
2176
2177             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2178                 if (ost->filter && !ost->frame_rate.num)
2179                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2180                 if (ist && !ost->frame_rate.num)
2181                     ost->frame_rate = ist->framerate;
2182                 if (ist && !ost->frame_rate.num)
2183                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2184 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2185                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2186                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2187                     ost->frame_rate = ost->enc->supported_framerates[idx];
2188                 }
2189             }
2190
2191             switch (codec->codec_type) {
2192             case AVMEDIA_TYPE_AUDIO:
2193                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2194                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2195                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2196                 codec->channels       = av_get_channel_layout_nb_channels(codec->channel_layout);
2197                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2198                 break;
2199             case AVMEDIA_TYPE_VIDEO:
2200                 codec->time_base = av_inv_q(ost->frame_rate);
2201                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2202                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2203                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2204                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2205                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2206                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2207                 }
2208                 for (j = 0; j < ost->forced_kf_count; j++)
2209                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2210                                                          AV_TIME_BASE_Q,
2211                                                          codec->time_base);
2212
2213                 codec->width  = ost->filter->filter->inputs[0]->w;
2214                 codec->height = ost->filter->filter->inputs[0]->h;
2215                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2216                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
2217                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
2218                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2219                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2220
2221                 if (!icodec ||
2222                     codec->width   != icodec->width  ||
2223                     codec->height  != icodec->height ||
2224                     codec->pix_fmt != icodec->pix_fmt) {
2225                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2226                 }
2227
2228                 if (ost->forced_keyframes)
2229                     parse_forced_key_frames(ost->forced_keyframes, ost,
2230                                             ost->st->codec);
2231                 break;
2232             case AVMEDIA_TYPE_SUBTITLE:
2233                 codec->time_base = (AVRational){1, 1000};
2234                 if (!codec->width) {
2235                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2236                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2237                 }
2238                 break;
2239             default:
2240                 abort();
2241                 break;
2242             }
2243             /* two pass mode */
2244             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2245                 char logfilename[1024];
2246                 FILE *f;
2247
2248                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2249                          ost->logfile_prefix ? ost->logfile_prefix :
2250                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2251                          i);
2252                 if (!strcmp(ost->enc->name, "libx264")) {
2253                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2254                 } else {
2255                     if (codec->flags & CODEC_FLAG_PASS2) {
2256                         char  *logbuffer;
2257                         size_t logbuffer_size;
2258                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2259                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2260                                    logfilename);
2261                             exit(1);
2262                         }
2263                         codec->stats_in = logbuffer;
2264                     }
2265                     if (codec->flags & CODEC_FLAG_PASS1) {
2266                         f = fopen(logfilename, "wb");
2267                         if (!f) {
2268                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2269                                 logfilename, strerror(errno));
2270                             exit(1);
2271                         }
2272                         ost->logfile = f;
2273                     }
2274                 }
2275             }
2276         }
2277     }
2278
2279     /* open each encoder */
2280     for (i = 0; i < nb_output_streams; i++) {
2281         ost = output_streams[i];
2282         if (ost->encoding_needed) {
2283             AVCodec      *codec = ost->enc;
2284             AVCodecContext *dec = NULL;
2285
2286             if ((ist = get_input_stream(ost)))
2287                 dec = ist->st->codec;
2288             if (dec && dec->subtitle_header) {
2289                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2290                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2291                 if (!ost->st->codec->subtitle_header) {
2292                     ret = AVERROR(ENOMEM);
2293                     goto dump_format;
2294                 }
2295                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2296                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2297             }
2298             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2299                 av_dict_set(&ost->opts, "threads", "auto", 0);
2300             if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
2301                 if (ret == AVERROR_EXPERIMENTAL)
2302                     abort_codec_experimental(codec, 1);
2303                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2304                         ost->file_index, ost->index);
2305                 goto dump_format;
2306             }
2307             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2308                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2309                 av_buffersink_set_frame_size(ost->filter->filter,
2310                                              ost->st->codec->frame_size);
2311             assert_avoptions(ost->opts);
2312             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2313                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2314                                              " It takes bits/s as argument, not kbits/s\n");
2315             extra_size += ost->st->codec->extradata_size;
2316
2317             if (ost->st->codec->me_threshold)
2318                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
2319         }
2320     }
2321
2322     /* init input streams */
2323     for (i = 0; i < nb_input_streams; i++)
2324         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
2325             goto dump_format;
2326
2327     /* discard unused programs */
2328     for (i = 0; i < nb_input_files; i++) {
2329         InputFile *ifile = input_files[i];
2330         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2331             AVProgram *p = ifile->ctx->programs[j];
2332             int discard  = AVDISCARD_ALL;
2333
2334             for (k = 0; k < p->nb_stream_indexes; k++)
2335                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2336                     discard = AVDISCARD_DEFAULT;
2337                     break;
2338                 }
2339             p->discard = discard;
2340         }
2341     }
2342
2343     /* open files and write file headers */
2344     for (i = 0; i < nb_output_files; i++) {
2345         oc = output_files[i]->ctx;
2346         oc->interrupt_callback = int_cb;
2347         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2348             char errbuf[128];
2349             const char *errbuf_ptr = errbuf;
2350             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
2351                 errbuf_ptr = strerror(AVUNERROR(ret));
2352             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
2353             ret = AVERROR(EINVAL);
2354             goto dump_format;
2355         }
2356 //         assert_avoptions(output_files[i]->opts);
2357         if (strcmp(oc->oformat->name, "rtp")) {
2358             want_sdp = 0;
2359         }
2360     }
2361
2362  dump_format:
2363     /* dump the file output parameters - cannot be done before in case
2364        of stream copy */
2365     for (i = 0; i < nb_output_files; i++) {
2366         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2367     }
2368
2369     /* dump the stream mapping */
2370     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2371     for (i = 0; i < nb_input_streams; i++) {
2372         ist = input_streams[i];
2373
2374         for (j = 0; j < ist->nb_filters; j++) {
2375             if (ist->filters[j]->graph->graph_desc) {
2376                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2377                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2378                        ist->filters[j]->name);
2379                 if (nb_filtergraphs > 1)
2380                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2381                 av_log(NULL, AV_LOG_INFO, "\n");
2382             }
2383         }
2384     }
2385
2386     for (i = 0; i < nb_output_streams; i++) {
2387         ost = output_streams[i];
2388
2389         if (ost->attachment_filename) {
2390             /* an attached file */
2391             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2392                    ost->attachment_filename, ost->file_index, ost->index);
2393             continue;
2394         }
2395
2396         if (ost->filter && ost->filter->graph->graph_desc) {
2397             /* output from a complex graph */
2398             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2399             if (nb_filtergraphs > 1)
2400                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2401
2402             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2403                    ost->index, ost->enc ? ost->enc->name : "?");
2404             continue;
2405         }
2406
2407         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2408                input_streams[ost->source_index]->file_index,
2409                input_streams[ost->source_index]->st->index,
2410                ost->file_index,
2411                ost->index);
2412         if (ost->sync_ist != input_streams[ost->source_index])
2413             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2414                    ost->sync_ist->file_index,
2415                    ost->sync_ist->st->index);
2416         if (ost->stream_copy)
2417             av_log(NULL, AV_LOG_INFO, " (copy)");
2418         else
2419             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2420                    input_streams[ost->source_index]->dec->name : "?",
2421                    ost->enc ? ost->enc->name : "?");
2422         av_log(NULL, AV_LOG_INFO, "\n");
2423     }
2424
2425     if (ret) {
2426         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2427         return ret;
2428     }
2429
2430     if (want_sdp) {
2431         print_sdp();
2432     }
2433
2434     return 0;
2435 }
2436
2437 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2438 static int need_output(void)
2439 {
2440     int i;
2441
2442     for (i = 0; i < nb_output_streams; i++) {
2443         OutputStream *ost    = output_streams[i];
2444         OutputFile *of       = output_files[ost->file_index];
2445         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2446
2447         if (ost->finished ||
2448             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2449             continue;
2450         if (ost->frame_number >= ost->max_frames) {
2451             int j;
2452             for (j = 0; j < of->ctx->nb_streams; j++)
2453                 close_output_stream(output_streams[of->ost_index + j]);
2454             continue;
2455         }
2456
2457         return 1;
2458     }
2459
2460     return 0;
2461 }
2462
2463 /**
2464  * Select the output stream to process.
2465  *
2466  * @return  selected output stream, or NULL if none available
2467  */
2468 static OutputStream *choose_output(void)
2469 {
2470     int i;
2471     int64_t opts_min = INT64_MAX;
2472     OutputStream *ost_min = NULL;
2473
2474     for (i = 0; i < nb_output_streams; i++) {
2475         OutputStream *ost = output_streams[i];
2476         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2477                                     AV_TIME_BASE_Q);
2478         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2479             opts_min = opts;
2480             ost_min  = ost;
2481         }
2482     }
2483     return ost_min;
2484 }
2485
2486 static int check_keyboard_interaction(int64_t cur_time)
2487 {
2488     int i, ret, key;
2489     static int64_t last_time;
2490     if (received_nb_signals)
2491         return AVERROR_EXIT;
2492     /* read_key() returns 0 on EOF */
2493     if(cur_time - last_time >= 100000 && !run_as_daemon){
2494         key =  read_key();
2495         last_time = cur_time;
2496     }else
2497         key = -1;
2498     if (key == 'q')
2499         return AVERROR_EXIT;
2500     if (key == '+') av_log_set_level(av_log_get_level()+10);
2501     if (key == '-') av_log_set_level(av_log_get_level()-10);
2502     if (key == 's') qp_hist     ^= 1;
2503     if (key == 'h'){
2504         if (do_hex_dump){
2505             do_hex_dump = do_pkt_dump = 0;
2506         } else if(do_pkt_dump){
2507             do_hex_dump = 1;
2508         } else
2509             do_pkt_dump = 1;
2510         av_log_set_level(AV_LOG_DEBUG);
2511     }
2512     if (key == 'c' || key == 'C'){
2513         char buf[4096], target[64], command[256], arg[256] = {0};
2514         double time;
2515         int k, n = 0;
2516         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2517         i = 0;
2518         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2519             if (k > 0)
2520                 buf[i++] = k;
2521         buf[i] = 0;
2522         if (k > 0 &&
2523             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2524             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2525                    target, time, command, arg);
2526             for (i = 0; i < nb_filtergraphs; i++) {
2527                 FilterGraph *fg = filtergraphs[i];
2528                 if (fg->graph) {
2529                     if (time < 0) {
2530                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2531                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2532                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2533                     } else {
2534                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2535                     }
2536                 }
2537             }
2538         } else {
2539             av_log(NULL, AV_LOG_ERROR,
2540                    "Parse error, at least 3 arguments were expected, "
2541                    "only %d given in string '%s'\n", n, buf);
2542         }
2543     }
2544     if (key == 'd' || key == 'D'){
2545         int debug=0;
2546         if(key == 'D') {
2547             debug = input_streams[0]->st->codec->debug<<1;
2548             if(!debug) debug = 1;
2549             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2550                 debug += debug;
2551         }else
2552             if(scanf("%d", &debug)!=1)
2553                 fprintf(stderr,"error parsing debug value\n");
2554         for(i=0;i<nb_input_streams;i++) {
2555             input_streams[i]->st->codec->debug = debug;
2556         }
2557         for(i=0;i<nb_output_streams;i++) {
2558             OutputStream *ost = output_streams[i];
2559             ost->st->codec->debug = debug;
2560         }
2561         if(debug) av_log_set_level(AV_LOG_DEBUG);
2562         fprintf(stderr,"debug=%d\n", debug);
2563     }
2564     if (key == '?'){
2565         fprintf(stderr, "key    function\n"
2566                         "?      show this help\n"
2567                         "+      increase verbosity\n"
2568                         "-      decrease verbosity\n"
2569                         "c      Send command to filtergraph\n"
2570                         "D      cycle through available debug modes\n"
2571                         "h      dump packets/hex press to cycle through the 3 states\n"
2572                         "q      quit\n"
2573                         "s      Show QP histogram\n"
2574         );
2575     }
2576     return 0;
2577 }
2578
2579 #if HAVE_PTHREADS
2580 static void *input_thread(void *arg)
2581 {
2582     InputFile *f = arg;
2583     int ret = 0;
2584
2585     while (!transcoding_finished && ret >= 0) {
2586         AVPacket pkt;
2587         ret = av_read_frame(f->ctx, &pkt);
2588
2589         if (ret == AVERROR(EAGAIN)) {
2590             av_usleep(10000);
2591             ret = 0;
2592             continue;
2593         } else if (ret < 0)
2594             break;
2595
2596         pthread_mutex_lock(&f->fifo_lock);
2597         while (!av_fifo_space(f->fifo))
2598             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2599
2600         av_dup_packet(&pkt);
2601         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2602
2603         pthread_mutex_unlock(&f->fifo_lock);
2604     }
2605
2606     f->finished = 1;
2607     return NULL;
2608 }
2609
2610 static void free_input_threads(void)
2611 {
2612     int i;
2613
2614     if (nb_input_files == 1)
2615         return;
2616
2617     transcoding_finished = 1;
2618
2619     for (i = 0; i < nb_input_files; i++) {
2620         InputFile *f = input_files[i];
2621         AVPacket pkt;
2622
2623         if (!f->fifo || f->joined)
2624             continue;
2625
2626         pthread_mutex_lock(&f->fifo_lock);
2627         while (av_fifo_size(f->fifo)) {
2628             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2629             av_free_packet(&pkt);
2630         }
2631         pthread_cond_signal(&f->fifo_cond);
2632         pthread_mutex_unlock(&f->fifo_lock);
2633
2634         pthread_join(f->thread, NULL);
2635         f->joined = 1;
2636
2637         while (av_fifo_size(f->fifo)) {
2638             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2639             av_free_packet(&pkt);
2640         }
2641         av_fifo_free(f->fifo);
2642     }
2643 }
2644
2645 static int init_input_threads(void)
2646 {
2647     int i, ret;
2648
2649     if (nb_input_files == 1)
2650         return 0;
2651
2652     for (i = 0; i < nb_input_files; i++) {
2653         InputFile *f = input_files[i];
2654
2655         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2656             return AVERROR(ENOMEM);
2657
2658         pthread_mutex_init(&f->fifo_lock, NULL);
2659         pthread_cond_init (&f->fifo_cond, NULL);
2660
2661         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2662             return AVERROR(ret);
2663     }
2664     return 0;
2665 }
2666
2667 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2668 {
2669     int ret = 0;
2670
2671     pthread_mutex_lock(&f->fifo_lock);
2672
2673     if (av_fifo_size(f->fifo)) {
2674         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2675         pthread_cond_signal(&f->fifo_cond);
2676     } else {
2677         if (f->finished)
2678             ret = AVERROR_EOF;
2679         else
2680             ret = AVERROR(EAGAIN);
2681     }
2682
2683     pthread_mutex_unlock(&f->fifo_lock);
2684
2685     return ret;
2686 }
2687 #endif
2688
2689 static int get_input_packet(InputFile *f, AVPacket *pkt)
2690 {
2691 #if HAVE_PTHREADS
2692     if (nb_input_files > 1)
2693         return get_input_packet_mt(f, pkt);
2694 #endif
2695     return av_read_frame(f->ctx, pkt);
2696 }
2697
2698 static int got_eagain(void)
2699 {
2700     int i;
2701     for (i = 0; i < nb_output_streams; i++)
2702         if (output_streams[i]->unavailable)
2703             return 1;
2704     return 0;
2705 }
2706
2707 static void reset_eagain(void)
2708 {
2709     int i;
2710     for (i = 0; i < nb_input_files; i++)
2711         input_files[i]->eagain = 0;
2712     for (i = 0; i < nb_output_streams; i++)
2713         output_streams[i]->unavailable = 0;
2714 }
2715
2716 /*
2717  * Return
2718  * - 0 -- one packet was read and processed
2719  * - AVERROR(EAGAIN) -- no packets were available for selected file,
2720  *   this function should be called again
2721  * - AVERROR_EOF -- this function should not be called again
2722  */
2723 static int process_input(int file_index)
2724 {
2725     InputFile *ifile = input_files[file_index];
2726     AVFormatContext *is;
2727     InputStream *ist;
2728     AVPacket pkt;
2729     int ret, i, j;
2730
2731     is  = ifile->ctx;
2732     ret = get_input_packet(ifile, &pkt);
2733
2734     if (ret == AVERROR(EAGAIN)) {
2735         ifile->eagain = 1;
2736         return ret;
2737     }
2738     if (ret < 0) {
2739         if (ret != AVERROR_EOF) {
2740             print_error(is->filename, ret);
2741             if (exit_on_error)
2742                 exit(1);
2743         }
2744         ifile->eof_reached = 1;
2745
2746         for (i = 0; i < ifile->nb_streams; i++) {
2747             ist = input_streams[ifile->ist_index + i];
2748             if (ist->decoding_needed)
2749                 output_packet(ist, NULL);
2750
2751             /* mark all outputs that don't go through lavfi as finished */
2752             for (j = 0; j < nb_output_streams; j++) {
2753                 OutputStream *ost = output_streams[j];
2754
2755                 if (ost->source_index == ifile->ist_index + i &&
2756                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2757                     close_output_stream(ost);
2758             }
2759         }
2760
2761         return AVERROR(EAGAIN);
2762     }
2763
2764     reset_eagain();
2765
2766     if (do_pkt_dump) {
2767         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2768                          is->streams[pkt.stream_index]);
2769     }
2770     /* the following test is needed in case new streams appear
2771        dynamically in stream : we ignore them */
2772     if (pkt.stream_index >= ifile->nb_streams) {
2773         report_new_stream(file_index, &pkt);
2774         goto discard_packet;
2775     }
2776
2777     ist = input_streams[ifile->ist_index + pkt.stream_index];
2778     if (ist->discard)
2779         goto discard_packet;
2780
2781     if (debug_ts) {
2782         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
2783                "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",
2784                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2785                av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
2786                av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
2787                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2788                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2789                av_ts2str(input_files[ist->file_index]->ts_offset),
2790                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
2791     }
2792
2793     if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
2794         int64_t stime, stime2;
2795         // Correcting starttime based on the enabled streams
2796         // 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.
2797         //       so we instead do it here as part of discontinuity handling
2798         if (   ist->next_dts == AV_NOPTS_VALUE
2799             && ifile->ts_offset == -is->start_time
2800             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2801             int64_t new_start_time = INT64_MAX;
2802             for (i=0; i<is->nb_streams; i++) {
2803                 AVStream *st = is->streams[i];
2804                 if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
2805                     continue;
2806                 new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
2807             }
2808             if (new_start_time > is->start_time) {
2809                 av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
2810                 ifile->ts_offset = -new_start_time;
2811             }
2812         }
2813
2814         stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
2815         stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
2816         ist->wrap_correction_done = 1;
2817
2818         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2819             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
2820             ist->wrap_correction_done = 0;
2821         }
2822         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2823             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
2824             ist->wrap_correction_done = 0;
2825         }
2826     }
2827
2828     if (pkt.dts != AV_NOPTS_VALUE)
2829         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2830     if (pkt.pts != AV_NOPTS_VALUE)
2831         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2832
2833     if (pkt.pts != AV_NOPTS_VALUE)
2834         pkt.pts *= ist->ts_scale;
2835     if (pkt.dts != AV_NOPTS_VALUE)
2836         pkt.dts *= ist->ts_scale;
2837
2838     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2839         !copy_ts) {
2840         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2841         int64_t delta   = pkt_dts - ist->next_dts;
2842         if (is->iformat->flags & AVFMT_TS_DISCONT) {
2843         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2844             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2845                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2846             pkt_dts+1<ist->pts){
2847             ifile->ts_offset -= delta;
2848             av_log(NULL, AV_LOG_DEBUG,
2849                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2850                    delta, ifile->ts_offset);
2851             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2852             if (pkt.pts != AV_NOPTS_VALUE)
2853                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2854         }
2855         } else {
2856             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2857                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2858                ) {
2859                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
2860                 pkt.dts = AV_NOPTS_VALUE;
2861             }
2862             if (pkt.pts != AV_NOPTS_VALUE){
2863                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
2864                 delta   = pkt_pts - ist->next_dts;
2865                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2866                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2867                    ) {
2868                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
2869                     pkt.pts = AV_NOPTS_VALUE;
2870                 }
2871             }
2872         }
2873     }
2874
2875     if (debug_ts) {
2876         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",
2877                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2878                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2879                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2880                av_ts2str(input_files[ist->file_index]->ts_offset),
2881                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
2882     }
2883
2884     sub2video_heartbeat(ist, pkt.pts);
2885
2886     ret = output_packet(ist, &pkt);
2887     if (ret < 0) {
2888         char buf[128];
2889         av_strerror(ret, buf, sizeof(buf));
2890         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
2891                 ist->file_index, ist->st->index, buf);
2892         if (exit_on_error)
2893             exit(1);
2894     }
2895
2896 discard_packet:
2897     av_free_packet(&pkt);
2898
2899     return 0;
2900 }
2901
2902 /**
2903  * Perform a step of transcoding for the specified filter graph.
2904  *
2905  * @param[in]  graph     filter graph to consider
2906  * @param[out] best_ist  input stream where a frame would allow to continue
2907  * @return  0 for success, <0 for error
2908  */
2909 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
2910 {
2911     int i, ret;
2912     int nb_requests, nb_requests_max = 0;
2913     InputFilter *ifilter;
2914     InputStream *ist;
2915
2916     *best_ist = NULL;
2917     ret = avfilter_graph_request_oldest(graph->graph);
2918     if (ret >= 0)
2919         return reap_filters();
2920
2921     if (ret == AVERROR_EOF) {
2922         ret = reap_filters();
2923         for (i = 0; i < graph->nb_outputs; i++)
2924             close_output_stream(graph->outputs[i]->ost);
2925         return ret;
2926     }
2927     if (ret != AVERROR(EAGAIN))
2928         return ret;
2929
2930     for (i = 0; i < graph->nb_inputs; i++) {
2931         ifilter = graph->inputs[i];
2932         ist = ifilter->ist;
2933         if (input_files[ist->file_index]->eagain ||
2934             input_files[ist->file_index]->eof_reached)
2935             continue;
2936         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
2937         if (nb_requests > nb_requests_max) {
2938             nb_requests_max = nb_requests;
2939             *best_ist = ist;
2940         }
2941     }
2942
2943     if (!*best_ist)
2944         for (i = 0; i < graph->nb_outputs; i++)
2945             graph->outputs[i]->ost->unavailable = 1;
2946
2947     return 0;
2948 }
2949
2950 /**
2951  * Run a single step of transcoding.
2952  *
2953  * @return  0 for success, <0 for error
2954  */
2955 static int transcode_step(void)
2956 {
2957     OutputStream *ost;
2958     InputStream  *ist;
2959     int ret;
2960
2961     ost = choose_output();
2962     if (!ost) {
2963         if (got_eagain()) {
2964             reset_eagain();
2965             av_usleep(10000);
2966             return 0;
2967         }
2968         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
2969         return AVERROR_EOF;
2970     }
2971
2972     if (ost->filter) {
2973         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
2974             return ret;
2975         if (!ist)
2976             return 0;
2977     } else {
2978         av_assert0(ost->source_index >= 0);
2979         ist = input_streams[ost->source_index];
2980     }
2981
2982     ret = process_input(ist->file_index);
2983     if (ret == AVERROR(EAGAIN)) {
2984         if (input_files[ist->file_index]->eagain)
2985             ost->unavailable = 1;
2986         return 0;
2987     }
2988     if (ret < 0)
2989         return ret == AVERROR_EOF ? 0 : ret;
2990
2991     return reap_filters();
2992 }
2993
2994 /*
2995  * The following code is the main loop of the file converter
2996  */
2997 static int transcode(void)
2998 {
2999     int ret, i;
3000     AVFormatContext *os;
3001     OutputStream *ost;
3002     InputStream *ist;
3003     int64_t timer_start;
3004
3005     ret = transcode_init();
3006     if (ret < 0)
3007         goto fail;
3008
3009     if (stdin_interaction) {
3010         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3011     }
3012
3013     timer_start = av_gettime();
3014
3015 #if HAVE_PTHREADS
3016     if ((ret = init_input_threads()) < 0)
3017         goto fail;
3018 #endif
3019
3020     while (!received_sigterm) {
3021         int64_t cur_time= av_gettime();
3022
3023         /* if 'q' pressed, exits */
3024         if (stdin_interaction)
3025             if (check_keyboard_interaction(cur_time) < 0)
3026                 break;
3027
3028         /* check if there's any stream where output is still needed */
3029         if (!need_output()) {
3030             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3031             break;
3032         }
3033
3034         ret = transcode_step();
3035         if (ret < 0) {
3036             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
3037                 continue;
3038
3039             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
3040             break;
3041         }
3042
3043         /* dump report by using the output first video and audio streams */
3044         print_report(0, timer_start, cur_time);
3045     }
3046 #if HAVE_PTHREADS
3047     free_input_threads();
3048 #endif
3049
3050     /* at the end of stream, we must flush the decoder buffers */
3051     for (i = 0; i < nb_input_streams; i++) {
3052         ist = input_streams[i];
3053         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3054             output_packet(ist, NULL);
3055         }
3056     }
3057     flush_encoders();
3058
3059     term_exit();
3060
3061     /* write the trailer if needed and close file */
3062     for (i = 0; i < nb_output_files; i++) {
3063         os = output_files[i]->ctx;
3064         av_write_trailer(os);
3065     }
3066
3067     /* dump report by using the first video and audio streams */
3068     print_report(1, timer_start, av_gettime());
3069
3070     /* close each encoder */
3071     for (i = 0; i < nb_output_streams; i++) {
3072         ost = output_streams[i];
3073         if (ost->encoding_needed) {
3074             av_freep(&ost->st->codec->stats_in);
3075             avcodec_close(ost->st->codec);
3076         }
3077     }
3078
3079     /* close each decoder */
3080     for (i = 0; i < nb_input_streams; i++) {
3081         ist = input_streams[i];
3082         if (ist->decoding_needed) {
3083             avcodec_close(ist->st->codec);
3084         }
3085     }
3086
3087     /* finished ! */
3088     ret = 0;
3089
3090  fail:
3091 #if HAVE_PTHREADS
3092     free_input_threads();
3093 #endif
3094
3095     if (output_streams) {
3096         for (i = 0; i < nb_output_streams; i++) {
3097             ost = output_streams[i];
3098             if (ost) {
3099                 if (ost->stream_copy)
3100                     av_freep(&ost->st->codec->extradata);
3101                 if (ost->logfile) {
3102                     fclose(ost->logfile);
3103                     ost->logfile = NULL;
3104                 }
3105                 av_freep(&ost->st->codec->subtitle_header);
3106                 av_free(ost->forced_kf_pts);
3107                 av_dict_free(&ost->opts);
3108             }
3109         }
3110     }
3111     return ret;
3112 }
3113
3114
3115 static int64_t getutime(void)
3116 {
3117 #if HAVE_GETRUSAGE
3118     struct rusage rusage;
3119
3120     getrusage(RUSAGE_SELF, &rusage);
3121     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3122 #elif HAVE_GETPROCESSTIMES
3123     HANDLE proc;
3124     FILETIME c, e, k, u;
3125     proc = GetCurrentProcess();
3126     GetProcessTimes(proc, &c, &e, &k, &u);
3127     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3128 #else
3129     return av_gettime();
3130 #endif
3131 }
3132
3133 static int64_t getmaxrss(void)
3134 {
3135 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3136     struct rusage rusage;
3137     getrusage(RUSAGE_SELF, &rusage);
3138     return (int64_t)rusage.ru_maxrss * 1024;
3139 #elif HAVE_GETPROCESSMEMORYINFO
3140     HANDLE proc;
3141     PROCESS_MEMORY_COUNTERS memcounters;
3142     proc = GetCurrentProcess();
3143     memcounters.cb = sizeof(memcounters);
3144     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3145     return memcounters.PeakPagefileUsage;
3146 #else
3147     return 0;
3148 #endif
3149 }
3150
3151 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3152 {
3153 }
3154
3155 int main(int argc, char **argv)
3156 {
3157     int ret;
3158     int64_t ti;
3159
3160     atexit(exit_program);
3161
3162     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3163
3164     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3165     parse_loglevel(argc, argv, options);
3166
3167     if(argc>1 && !strcmp(argv[1], "-d")){
3168         run_as_daemon=1;
3169         av_log_set_callback(log_callback_null);
3170         argc--;
3171         argv++;
3172     }
3173
3174     avcodec_register_all();
3175 #if CONFIG_AVDEVICE
3176     avdevice_register_all();
3177 #endif
3178     avfilter_register_all();
3179     av_register_all();
3180     avformat_network_init();
3181
3182     show_banner(argc, argv, options);
3183
3184     term_init();
3185
3186     /* parse options and open all input/output files */
3187     ret = ffmpeg_parse_options(argc, argv);
3188     if (ret < 0)
3189         exit(1);
3190
3191     if (nb_output_files <= 0 && nb_input_files == 0) {
3192         show_usage();
3193         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3194         exit(1);
3195     }
3196
3197     /* file converter / grab */
3198     if (nb_output_files <= 0) {
3199         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3200         exit(1);
3201     }
3202
3203 //     if (nb_input_files == 0) {
3204 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3205 //         exit(1);
3206 //     }
3207
3208     current_time = ti = getutime();
3209     if (transcode() < 0)
3210         exit(1);
3211     ti = getutime() - ti;
3212     if (do_benchmark) {
3213         int maxrss = getmaxrss() / 1024;
3214         printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss);
3215     }
3216
3217     exit(0);
3218     return 0;
3219 }