lavfi/edgedetect: add rounding for high/low threshold.
[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 #include <unistd.h>
35 #endif
36 #include "libavformat/avformat.h"
37 #include "libavdevice/avdevice.h"
38 #include "libswscale/swscale.h"
39 #include "libswresample/swresample.h"
40 #include "libavutil/opt.h"
41 #include "libavutil/audioconvert.h"
42 #include "libavutil/parseutils.h"
43 #include "libavutil/samplefmt.h"
44 #include "libavutil/colorspace.h"
45 #include "libavutil/fifo.h"
46 #include "libavutil/intreadwrite.h"
47 #include "libavutil/dict.h"
48 #include "libavutil/mathematics.h"
49 #include "libavutil/pixdesc.h"
50 #include "libavutil/avstring.h"
51 #include "libavutil/libm.h"
52 #include "libavutil/imgutils.h"
53 #include "libavutil/timestamp.h"
54 #include "libavutil/bprint.h"
55 #include "libavutil/time.h"
56 #include "libavformat/os_support.h"
57
58 #include "libavformat/ffm.h" // not public API
59
60 # include "libavfilter/avcodec.h"
61 # include "libavfilter/avfilter.h"
62 # include "libavfilter/avfiltergraph.h"
63 # include "libavfilter/buffersrc.h"
64 # include "libavfilter/buffersink.h"
65
66 #if HAVE_SYS_RESOURCE_H
67 #include <sys/types.h>
68 #include <sys/resource.h>
69 #elif HAVE_GETPROCESSTIMES
70 #include <windows.h>
71 #endif
72 #if HAVE_GETPROCESSMEMORYINFO
73 #include <windows.h>
74 #include <psapi.h>
75 #endif
76
77 #if HAVE_SYS_SELECT_H
78 #include <sys/select.h>
79 #endif
80
81 #if HAVE_TERMIOS_H
82 #include <fcntl.h>
83 #include <sys/ioctl.h>
84 #include <sys/time.h>
85 #include <termios.h>
86 #elif HAVE_KBHIT
87 #include <conio.h>
88 #endif
89
90 #if HAVE_PTHREADS
91 #include <pthread.h>
92 #endif
93
94 #include <time.h>
95
96 #include "ffmpeg.h"
97 #include "cmdutils.h"
98
99 #include "libavutil/avassert.h"
100
101 const char program_name[] = "ffmpeg";
102 const int program_birth_year = 2000;
103
104 static FILE *vstats_file;
105
106 static void do_video_stats(AVFormatContext *os, OutputStream *ost, int frame_size);
107 static int64_t getutime(void);
108
109 static int run_as_daemon  = 0;
110 static int64_t video_size = 0;
111 static int64_t audio_size = 0;
112 static int64_t subtitle_size = 0;
113 static int64_t extra_size = 0;
114 static int nb_frames_dup = 0;
115 static int nb_frames_drop = 0;
116
117 static int current_time;
118 AVIOContext *progress_avio = NULL;
119
120 static uint8_t *subtitle_out;
121
122 #if HAVE_PTHREADS
123 /* signal to input threads that they should exit; set by the main thread */
124 static int transcoding_finished;
125 #endif
126
127 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
128
129 InputStream **input_streams = NULL;
130 int        nb_input_streams = 0;
131 InputFile   **input_files   = NULL;
132 int        nb_input_files   = 0;
133
134 OutputStream **output_streams = NULL;
135 int         nb_output_streams = 0;
136 OutputFile   **output_files   = NULL;
137 int         nb_output_files   = 0;
138
139 FilterGraph **filtergraphs;
140 int        nb_filtergraphs;
141
142 #if HAVE_TERMIOS_H
143
144 /* init terminal so that we can grab keys */
145 static struct termios oldtty;
146 static int restore_tty;
147 #endif
148
149
150 /* sub2video hack:
151    Convert subtitles to video with alpha to insert them in filter graphs.
152    This is a temporary solution until libavfilter gets real subtitles support.
153  */
154
155
156
157 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
158                                 AVSubtitleRect *r)
159 {
160     uint32_t *pal, *dst2;
161     uint8_t *src, *src2;
162     int x, y;
163
164     if (r->type != SUBTITLE_BITMAP) {
165         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
166         return;
167     }
168     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
169         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
170         return;
171     }
172
173     dst += r->y * dst_linesize + r->x * 4;
174     src = r->pict.data[0];
175     pal = (uint32_t *)r->pict.data[1];
176     for (y = 0; y < r->h; y++) {
177         dst2 = (uint32_t *)dst;
178         src2 = src;
179         for (x = 0; x < r->w; x++)
180             *(dst2++) = pal[*(src2++)];
181         dst += dst_linesize;
182         src += r->pict.linesize[0];
183     }
184 }
185
186 static void sub2video_push_ref(InputStream *ist, int64_t pts)
187 {
188     AVFilterBufferRef *ref = ist->sub2video.ref;
189     int i;
190
191     ist->sub2video.last_pts = ref->pts = pts;
192     for (i = 0; i < ist->nb_filters; i++)
193         av_buffersrc_add_ref(ist->filters[i]->filter,
194                              avfilter_ref_buffer(ref, ~0),
195                              AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
196                              AV_BUFFERSRC_FLAG_NO_COPY);
197 }
198
199 static void sub2video_update(InputStream *ist, AVSubtitle *sub, int64_t pts)
200 {
201     int w = ist->sub2video.w, h = ist->sub2video.h;
202     AVFilterBufferRef *ref = ist->sub2video.ref;
203     int8_t *dst;
204     int     dst_linesize;
205     int i;
206
207     if (!ref)
208         return;
209     dst          = ref->data    [0];
210     dst_linesize = ref->linesize[0];
211     memset(dst, 0, h * dst_linesize);
212     for (i = 0; i < sub->num_rects; i++)
213         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
214     sub2video_push_ref(ist, pts);
215 }
216
217 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
218 {
219     InputFile *infile = input_files[ist->file_index];
220     int i, j, nb_reqs;
221     int64_t pts2;
222
223     /* When a frame is read from a file, examine all sub2video streams in
224        the same file and send the sub2video frame again. Otherwise, decoded
225        video frames could be accumulating in the filter graph while a filter
226        (possibly overlay) is desperately waiting for a subtitle frame. */
227     for (i = 0; i < infile->nb_streams; i++) {
228         InputStream *ist2 = input_streams[infile->ist_index + i];
229         if (!ist2->sub2video.ref)
230             continue;
231         /* subtitles seem to be usually muxed ahead of other streams;
232            if not, substracting a larger time here is necessary */
233         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
234         /* do not send the heartbeat frame if the subtitle is already ahead */
235         if (pts2 <= ist2->sub2video.last_pts)
236             continue;
237         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
238             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
239         if (nb_reqs)
240             sub2video_push_ref(ist2, pts2);
241     }
242 }
243
244 static void sub2video_flush(InputStream *ist)
245 {
246     int i;
247
248     for (i = 0; i < ist->nb_filters; i++)
249         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
250 }
251
252 /* end of sub2video hack */
253
254 void term_exit(void)
255 {
256     av_log(NULL, AV_LOG_QUIET, "%s", "");
257 #if HAVE_TERMIOS_H
258     if(restore_tty)
259         tcsetattr (0, TCSANOW, &oldtty);
260 #endif
261 }
262
263 static volatile int received_sigterm = 0;
264 static volatile int received_nb_signals = 0;
265
266 static void
267 sigterm_handler(int sig)
268 {
269     received_sigterm = sig;
270     received_nb_signals++;
271     term_exit();
272     if(received_nb_signals > 3)
273         exit(123);
274 }
275
276 void term_init(void)
277 {
278 #if HAVE_TERMIOS_H
279     if(!run_as_daemon){
280         struct termios tty;
281         int istty = 1;
282 #if HAVE_ISATTY
283         istty = isatty(0) && isatty(2);
284 #endif
285         if (istty && tcgetattr (0, &tty) == 0) {
286             oldtty = tty;
287             restore_tty = 1;
288             atexit(term_exit);
289
290             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
291                              |INLCR|IGNCR|ICRNL|IXON);
292             tty.c_oflag |= OPOST;
293             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
294             tty.c_cflag &= ~(CSIZE|PARENB);
295             tty.c_cflag |= CS8;
296             tty.c_cc[VMIN] = 1;
297             tty.c_cc[VTIME] = 0;
298
299             tcsetattr (0, TCSANOW, &tty);
300         }
301         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
302     }
303 #endif
304     avformat_network_deinit();
305
306     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
307     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
308 #ifdef SIGXCPU
309     signal(SIGXCPU, sigterm_handler);
310 #endif
311 }
312
313 /* read a key without blocking */
314 static int read_key(void)
315 {
316     unsigned char ch;
317 #if HAVE_TERMIOS_H
318     int n = 1;
319     struct timeval tv;
320     fd_set rfds;
321
322     FD_ZERO(&rfds);
323     FD_SET(0, &rfds);
324     tv.tv_sec = 0;
325     tv.tv_usec = 0;
326     n = select(1, &rfds, NULL, NULL, &tv);
327     if (n > 0) {
328         n = read(0, &ch, 1);
329         if (n == 1)
330             return ch;
331
332         return n;
333     }
334 #elif HAVE_KBHIT
335 #    if HAVE_PEEKNAMEDPIPE
336     static int is_pipe;
337     static HANDLE input_handle;
338     DWORD dw, nchars;
339     if(!input_handle){
340         input_handle = GetStdHandle(STD_INPUT_HANDLE);
341         is_pipe = !GetConsoleMode(input_handle, &dw);
342     }
343
344     if (stdin->_cnt > 0) {
345         read(0, &ch, 1);
346         return ch;
347     }
348     if (is_pipe) {
349         /* When running under a GUI, you will end here. */
350         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
351             return -1;
352         //Read it
353         if(nchars != 0) {
354             read(0, &ch, 1);
355             return ch;
356         }else{
357             return -1;
358         }
359     }
360 #    endif
361     if(kbhit())
362         return(getch());
363 #endif
364     return -1;
365 }
366
367 static int decode_interrupt_cb(void *ctx)
368 {
369     return received_nb_signals > 1;
370 }
371
372 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
373
374 void av_noreturn exit_program(int ret)
375 {
376     int i, j;
377
378     for (i = 0; i < nb_filtergraphs; i++) {
379         avfilter_graph_free(&filtergraphs[i]->graph);
380         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
381             av_freep(&filtergraphs[i]->inputs[j]->name);
382             av_freep(&filtergraphs[i]->inputs[j]);
383         }
384         av_freep(&filtergraphs[i]->inputs);
385         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
386             av_freep(&filtergraphs[i]->outputs[j]->name);
387             av_freep(&filtergraphs[i]->outputs[j]);
388         }
389         av_freep(&filtergraphs[i]->outputs);
390         av_freep(&filtergraphs[i]);
391     }
392     av_freep(&filtergraphs);
393
394     av_freep(&subtitle_out);
395
396     /* close files */
397     for (i = 0; i < nb_output_files; i++) {
398         AVFormatContext *s = output_files[i]->ctx;
399         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
400             avio_close(s->pb);
401         avformat_free_context(s);
402         av_dict_free(&output_files[i]->opts);
403         av_freep(&output_files[i]);
404     }
405     for (i = 0; i < nb_output_streams; i++) {
406         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
407         while (bsfc) {
408             AVBitStreamFilterContext *next = bsfc->next;
409             av_bitstream_filter_close(bsfc);
410             bsfc = next;
411         }
412         output_streams[i]->bitstream_filters = NULL;
413
414         av_freep(&output_streams[i]->forced_keyframes);
415         av_freep(&output_streams[i]->avfilter);
416         av_freep(&output_streams[i]->filtered_frame);
417         av_freep(&output_streams[i]);
418     }
419     for (i = 0; i < nb_input_files; i++) {
420         avformat_close_input(&input_files[i]->ctx);
421         av_freep(&input_files[i]);
422     }
423     for (i = 0; i < nb_input_streams; i++) {
424         av_freep(&input_streams[i]->decoded_frame);
425         av_dict_free(&input_streams[i]->opts);
426         free_buffer_pool(&input_streams[i]->buffer_pool);
427         avfilter_unref_bufferp(&input_streams[i]->sub2video.ref);
428         av_freep(&input_streams[i]->filters);
429         av_freep(&input_streams[i]);
430     }
431
432     if (vstats_file)
433         fclose(vstats_file);
434     av_free(vstats_filename);
435
436     av_freep(&input_streams);
437     av_freep(&input_files);
438     av_freep(&output_streams);
439     av_freep(&output_files);
440
441     uninit_opts();
442
443     avfilter_uninit();
444     avformat_network_deinit();
445
446     if (received_sigterm) {
447         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
448                (int) received_sigterm);
449         exit (255);
450     }
451
452     exit(ret);
453 }
454
455 void assert_avoptions(AVDictionary *m)
456 {
457     AVDictionaryEntry *t;
458     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
459         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
460         exit_program(1);
461     }
462 }
463
464 static void assert_codec_experimental(AVCodecContext *c, int encoder)
465 {
466     const char *codec_string = encoder ? "encoder" : "decoder";
467     AVCodec *codec;
468     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
469         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
470         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
471                 "results.\nAdd '-strict experimental' if you want to use it.\n",
472                 codec_string, c->codec->name);
473         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
474         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
475             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
476                    codec_string, codec->name);
477         exit_program(1);
478     }
479 }
480
481 static void update_benchmark(const char *fmt, ...)
482 {
483     if (do_benchmark_all) {
484         int64_t t = getutime();
485         va_list va;
486         char buf[1024];
487
488         if (fmt) {
489             va_start(va, fmt);
490             vsnprintf(buf, sizeof(buf), fmt, va);
491             va_end(va);
492             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
493         }
494         current_time = t;
495     }
496 }
497
498 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
499 {
500     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
501     AVCodecContext          *avctx = ost->st->codec;
502     int ret;
503
504     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
505         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
506         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
507
508     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
509         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
510         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
511             av_log(s, max - pkt->dts > 2 ? AV_LOG_WARNING : AV_LOG_DEBUG, "Audio timestamp %"PRId64" < %"PRId64" invalid, cliping\n", pkt->dts, max);
512             pkt->pts = pkt->dts = max;
513         }
514     }
515
516     /*
517      * Audio encoders may split the packets --  #frames in != #packets out.
518      * But there is no reordering, so we can limit the number of output packets
519      * by simply dropping them here.
520      * Counting encoded video frames needs to be done separately because of
521      * reordering, see do_video_out()
522      */
523     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
524         if (ost->frame_number >= ost->max_frames) {
525             av_free_packet(pkt);
526             return;
527         }
528         ost->frame_number++;
529     }
530
531     while (bsfc) {
532         AVPacket new_pkt = *pkt;
533         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
534                                            &new_pkt.data, &new_pkt.size,
535                                            pkt->data, pkt->size,
536                                            pkt->flags & AV_PKT_FLAG_KEY);
537         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
538             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
539             if(t) {
540                 memcpy(t, new_pkt.data, new_pkt.size);
541                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
542                 new_pkt.data = t;
543                 a = 1;
544             } else
545                 a = AVERROR(ENOMEM);
546         }
547         if (a > 0) {
548             av_free_packet(pkt);
549             new_pkt.destruct = av_destruct_packet;
550         } else if (a < 0) {
551             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
552                    bsfc->filter->name, pkt->stream_index,
553                    avctx->codec ? avctx->codec->name : "copy");
554             print_error("", a);
555             if (exit_on_error)
556                 exit_program(1);
557         }
558         *pkt = new_pkt;
559
560         bsfc = bsfc->next;
561     }
562
563     pkt->stream_index = ost->index;
564     ret = av_interleaved_write_frame(s, pkt);
565     if (ret < 0) {
566         print_error("av_interleaved_write_frame()", ret);
567         exit_program(1);
568     }
569 }
570
571 static int check_recording_time(OutputStream *ost)
572 {
573     OutputFile *of = output_files[ost->file_index];
574
575     if (of->recording_time != INT64_MAX &&
576         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
577                       AV_TIME_BASE_Q) >= 0) {
578         ost->finished = 1;
579         return 0;
580     }
581     return 1;
582 }
583
584 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
585                          AVFrame *frame)
586 {
587     AVCodecContext *enc = ost->st->codec;
588     AVPacket pkt;
589     int got_packet = 0;
590
591     av_init_packet(&pkt);
592     pkt.data = NULL;
593     pkt.size = 0;
594
595     if (!check_recording_time(ost))
596         return;
597
598     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
599         frame->pts = ost->sync_opts;
600     ost->sync_opts = frame->pts + frame->nb_samples;
601
602     av_assert0(pkt.size || !pkt.data);
603     update_benchmark(NULL);
604     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
605         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
606         exit_program(1);
607     }
608     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
609
610     if (got_packet) {
611         if (pkt.pts != AV_NOPTS_VALUE)
612             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
613         if (pkt.dts != AV_NOPTS_VALUE)
614             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
615         if (pkt.duration > 0)
616             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
617
618         if (debug_ts) {
619             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
620                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
621                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
622                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
623         }
624
625         write_frame(s, &pkt, ost);
626
627         audio_size += pkt.size;
628         av_free_packet(&pkt);
629     }
630 }
631
632 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
633 {
634     AVCodecContext *dec;
635     AVPicture *picture2;
636     AVPicture picture_tmp;
637     uint8_t *buf = 0;
638
639     dec = ist->st->codec;
640
641     /* deinterlace : must be done before any resize */
642     if (do_deinterlace) {
643         int size;
644
645         /* create temporary picture */
646         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
647         buf  = av_malloc(size);
648         if (!buf)
649             return;
650
651         picture2 = &picture_tmp;
652         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
653
654         if (avpicture_deinterlace(picture2, picture,
655                                  dec->pix_fmt, dec->width, dec->height) < 0) {
656             /* if error, do not deinterlace */
657             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
658             av_free(buf);
659             buf = NULL;
660             picture2 = picture;
661         }
662     } else {
663         picture2 = picture;
664     }
665
666     if (picture != picture2)
667         *picture = *picture2;
668     *bufp = buf;
669 }
670
671 static void do_subtitle_out(AVFormatContext *s,
672                             OutputStream *ost,
673                             InputStream *ist,
674                             AVSubtitle *sub,
675                             int64_t pts)
676 {
677     int subtitle_out_max_size = 1024 * 1024;
678     int subtitle_out_size, nb, i;
679     AVCodecContext *enc;
680     AVPacket pkt;
681
682     if (pts == AV_NOPTS_VALUE) {
683         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
684         if (exit_on_error)
685             exit_program(1);
686         return;
687     }
688
689     enc = ost->st->codec;
690
691     if (!subtitle_out) {
692         subtitle_out = av_malloc(subtitle_out_max_size);
693     }
694
695     /* Note: DVB subtitle need one packet to draw them and one other
696        packet to clear them */
697     /* XXX: signal it in the codec context ? */
698     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
699         nb = 2;
700     else
701         nb = 1;
702
703     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
704     pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q)
705         - output_files[ost->file_index]->start_time;
706     for (i = 0; i < nb; i++) {
707         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
708         if (!check_recording_time(ost))
709             return;
710
711         sub->pts = pts;
712         // start_display_time is required to be 0
713         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
714         sub->end_display_time  -= sub->start_display_time;
715         sub->start_display_time = 0;
716         if (i == 1)
717             sub->num_rects = 0;
718         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
719                                                     subtitle_out_max_size, sub);
720         if (subtitle_out_size < 0) {
721             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
722             exit_program(1);
723         }
724
725         av_init_packet(&pkt);
726         pkt.data = subtitle_out;
727         pkt.size = subtitle_out_size;
728         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
729         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
730         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
731             /* XXX: the pts correction is handled here. Maybe handling
732                it in the codec would be better */
733             if (i == 0)
734                 pkt.pts += 90 * sub->start_display_time;
735             else
736                 pkt.pts += 90 * sub->end_display_time;
737         }
738         write_frame(s, &pkt, ost);
739         subtitle_size += pkt.size;
740     }
741 }
742
743 static void do_video_out(AVFormatContext *s,
744                          OutputStream *ost,
745                          AVFrame *in_picture,
746                          float quality)
747 {
748     int ret, format_video_sync;
749     AVPacket pkt;
750     AVCodecContext *enc = ost->st->codec;
751     int nb_frames, i;
752     double sync_ipts, delta;
753     double duration = 0;
754     int frame_size = 0;
755     InputStream *ist = NULL;
756
757     if (ost->source_index >= 0)
758         ist = input_streams[ost->source_index];
759
760     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
761         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
762
763     sync_ipts = in_picture->pts;
764     delta = sync_ipts - ost->sync_opts + duration;
765
766     /* by default, we output a single frame */
767     nb_frames = 1;
768
769     format_video_sync = video_sync_method;
770     if (format_video_sync == VSYNC_AUTO)
771         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
772
773     switch (format_video_sync) {
774     case VSYNC_CFR:
775         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
776         if (delta < -1.1)
777             nb_frames = 0;
778         else if (delta > 1.1)
779             nb_frames = lrintf(delta);
780         break;
781     case VSYNC_VFR:
782         if (delta <= -0.6)
783             nb_frames = 0;
784         else if (delta > 0.6)
785             ost->sync_opts = lrint(sync_ipts);
786         break;
787     case VSYNC_DROP:
788     case VSYNC_PASSTHROUGH:
789         ost->sync_opts = lrint(sync_ipts);
790         break;
791     default:
792         av_assert0(0);
793     }
794
795     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
796     if (nb_frames == 0) {
797         nb_frames_drop++;
798         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
799         return;
800     } else if (nb_frames > 1) {
801         if (nb_frames > dts_error_threshold * 30) {
802             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skiping\n", nb_frames - 1);
803             nb_frames_drop++;
804             return;
805         }
806         nb_frames_dup += nb_frames - 1;
807         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
808     }
809
810   /* duplicates frame if needed */
811   for (i = 0; i < nb_frames; i++) {
812     av_init_packet(&pkt);
813     pkt.data = NULL;
814     pkt.size = 0;
815
816     in_picture->pts = ost->sync_opts;
817
818     if (!check_recording_time(ost))
819         return;
820
821     if (s->oformat->flags & AVFMT_RAWPICTURE &&
822         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
823         /* raw pictures are written as AVPicture structure to
824            avoid any copies. We support temporarily the older
825            method. */
826         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
827         enc->coded_frame->top_field_first  = in_picture->top_field_first;
828         pkt.data   = (uint8_t *)in_picture;
829         pkt.size   =  sizeof(AVPicture);
830         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
831         pkt.flags |= AV_PKT_FLAG_KEY;
832
833         write_frame(s, &pkt, ost);
834         video_size += pkt.size;
835     } else {
836         int got_packet;
837         AVFrame big_picture;
838
839         big_picture = *in_picture;
840         /* better than nothing: use input picture interlaced
841            settings */
842         big_picture.interlaced_frame = in_picture->interlaced_frame;
843         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
844             if (ost->top_field_first == -1)
845                 big_picture.top_field_first = in_picture->top_field_first;
846             else
847                 big_picture.top_field_first = !!ost->top_field_first;
848         }
849
850         /* handles same_quant here. This is not correct because it may
851            not be a global option */
852         big_picture.quality = quality;
853         if (!enc->me_threshold)
854             big_picture.pict_type = 0;
855         if (ost->forced_kf_index < ost->forced_kf_count &&
856             big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
857             big_picture.pict_type = AV_PICTURE_TYPE_I;
858             ost->forced_kf_index++;
859         }
860         update_benchmark(NULL);
861         ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
862         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
863         if (ret < 0) {
864             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
865             exit_program(1);
866         }
867
868         if (got_packet) {
869             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
870                 pkt.pts = ost->sync_opts;
871
872             if (pkt.pts != AV_NOPTS_VALUE)
873                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
874             if (pkt.dts != AV_NOPTS_VALUE)
875                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
876
877             if (debug_ts) {
878                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
879                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
880                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
881                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
882             }
883
884             write_frame(s, &pkt, ost);
885             frame_size = pkt.size;
886             video_size += pkt.size;
887             av_free_packet(&pkt);
888
889             /* if two pass, output log */
890             if (ost->logfile && enc->stats_out) {
891                 fprintf(ost->logfile, "%s", enc->stats_out);
892             }
893         }
894     }
895     ost->sync_opts++;
896     /*
897      * For video, number of frames in == number of packets out.
898      * But there may be reordering, so we can't throw away frames on encoder
899      * flush, we need to limit them here, before they go into encoder.
900      */
901     ost->frame_number++;
902   }
903
904     if (vstats_filename && frame_size)
905         do_video_stats(output_files[ost->file_index]->ctx, ost, frame_size);
906 }
907
908 static double psnr(double d)
909 {
910     return -10.0 * log(d) / log(10.0);
911 }
912
913 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
914                            int frame_size)
915 {
916     AVCodecContext *enc;
917     int frame_number;
918     double ti1, bitrate, avg_bitrate;
919
920     /* this is executed just the first time do_video_stats is called */
921     if (!vstats_file) {
922         vstats_file = fopen(vstats_filename, "w");
923         if (!vstats_file) {
924             perror("fopen");
925             exit_program(1);
926         }
927     }
928
929     enc = ost->st->codec;
930     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
931         frame_number = ost->frame_number;
932         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
933         if (enc->flags&CODEC_FLAG_PSNR)
934             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
935
936         fprintf(vstats_file,"f_size= %6d ", frame_size);
937         /* compute pts value */
938         ti1 = ost->sync_opts * av_q2d(enc->time_base);
939         if (ti1 < 0.01)
940             ti1 = 0.01;
941
942         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
943         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
944         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
945                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
946         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
947     }
948 }
949
950 /* check for new output on any of the filtergraphs */
951 static int poll_filters(void)
952 {
953     AVFilterBufferRef *picref;
954     AVFrame *filtered_frame = NULL;
955     int i, ret, ret_all;
956     unsigned nb_success = 1, av_uninit(nb_eof);
957     int64_t frame_pts;
958
959     while (1) {
960         /* Reap all buffers present in the buffer sinks */
961         for (i = 0; i < nb_output_streams; i++) {
962             OutputStream *ost = output_streams[i];
963             OutputFile    *of = output_files[ost->file_index];
964             int ret = 0;
965
966             if (!ost->filter)
967                 continue;
968
969             if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
970                 return AVERROR(ENOMEM);
971             } else
972                 avcodec_get_frame_defaults(ost->filtered_frame);
973             filtered_frame = ost->filtered_frame;
974
975             while (1) {
976                 ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
977                                                    AV_BUFFERSINK_FLAG_NO_REQUEST);
978                 if (ret < 0) {
979                     if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
980                         char buf[256];
981                         av_strerror(ret, buf, sizeof(buf));
982                         av_log(NULL, AV_LOG_WARNING,
983                                "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
984                     }
985                     break;
986                 }
987                 frame_pts = AV_NOPTS_VALUE;
988                 if (picref->pts != AV_NOPTS_VALUE) {
989                     filtered_frame->pts = frame_pts = av_rescale_q(picref->pts,
990                                                     ost->filter->filter->inputs[0]->time_base,
991                                                     ost->st->codec->time_base) -
992                                         av_rescale_q(of->start_time,
993                                                     AV_TIME_BASE_Q,
994                                                     ost->st->codec->time_base);
995
996                     if (of->start_time && filtered_frame->pts < 0) {
997                         avfilter_unref_buffer(picref);
998                         continue;
999                     }
1000                 }
1001                 //if (ost->source_index >= 0)
1002                 //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1003
1004
1005                 switch (ost->filter->filter->inputs[0]->type) {
1006                 case AVMEDIA_TYPE_VIDEO:
1007                     avfilter_copy_buf_props(filtered_frame, picref);
1008                     filtered_frame->pts = frame_pts;
1009                     if (!ost->frame_aspect_ratio)
1010                         ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
1011
1012                     do_video_out(of->ctx, ost, filtered_frame,
1013                                  same_quant ? ost->last_quality :
1014                                               ost->st->codec->global_quality);
1015                     break;
1016                 case AVMEDIA_TYPE_AUDIO:
1017                     avfilter_copy_buf_props(filtered_frame, picref);
1018                     filtered_frame->pts = frame_pts;
1019                     do_audio_out(of->ctx, ost, filtered_frame);
1020                     break;
1021                 default:
1022                     // TODO support subtitle filters
1023                     av_assert0(0);
1024                 }
1025
1026                 avfilter_unref_buffer(picref);
1027             }
1028         }
1029         if (!nb_success) /* from last round */
1030             break;
1031         /* Request frames through all the graphs */
1032         ret_all = nb_success = nb_eof = 0;
1033         for (i = 0; i < nb_filtergraphs; i++) {
1034             ret = avfilter_graph_request_oldest(filtergraphs[i]->graph);
1035             if (!ret) {
1036                 nb_success++;
1037             } else if (ret == AVERROR_EOF) {
1038                 nb_eof++;
1039             } else if (ret != AVERROR(EAGAIN)) {
1040                 char buf[256];
1041                 av_strerror(ret, buf, sizeof(buf));
1042                 av_log(NULL, AV_LOG_WARNING,
1043                        "Error in request_frame(): %s\n", buf);
1044                 ret_all = ret;
1045             }
1046         }
1047         /* Try again if anything succeeded */
1048     }
1049     return nb_eof == nb_filtergraphs ? AVERROR_EOF : ret_all;
1050 }
1051
1052 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1053 {
1054     char buf[1024];
1055     AVBPrint buf_script;
1056     OutputStream *ost;
1057     AVFormatContext *oc;
1058     int64_t total_size;
1059     AVCodecContext *enc;
1060     int frame_number, vid, i;
1061     double bitrate;
1062     int64_t pts = INT64_MAX;
1063     static int64_t last_time = -1;
1064     static int qp_histogram[52];
1065     int hours, mins, secs, us;
1066
1067     if (!print_stats && !is_last_report && !progress_avio)
1068         return;
1069
1070     if (!is_last_report) {
1071         if (last_time == -1) {
1072             last_time = cur_time;
1073             return;
1074         }
1075         if ((cur_time - last_time) < 500000)
1076             return;
1077         last_time = cur_time;
1078     }
1079
1080
1081     oc = output_files[0]->ctx;
1082
1083     total_size = avio_size(oc->pb);
1084     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
1085         total_size = avio_tell(oc->pb);
1086         if (total_size < 0)
1087             total_size = 0;
1088     }
1089
1090     buf[0] = '\0';
1091     vid = 0;
1092     av_bprint_init(&buf_script, 0, 1);
1093     for (i = 0; i < nb_output_streams; i++) {
1094         float q = -1;
1095         ost = output_streams[i];
1096         enc = ost->st->codec;
1097         if (!ost->stream_copy && enc->coded_frame)
1098             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1099         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1100             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1101             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1102                        ost->file_index, ost->index, q);
1103         }
1104         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1105             float fps, t = (cur_time-timer_start) / 1000000.0;
1106
1107             frame_number = ost->frame_number;
1108             fps = t > 1 ? frame_number / t : 0;
1109             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1110                      frame_number, fps < 9.95, fps, q);
1111             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1112             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1113             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1114                        ost->file_index, ost->index, q);
1115             if (is_last_report)
1116                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1117             if (qp_hist) {
1118                 int j;
1119                 int qp = lrintf(q);
1120                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1121                     qp_histogram[qp]++;
1122                 for (j = 0; j < 32; j++)
1123                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1124             }
1125             if (enc->flags&CODEC_FLAG_PSNR) {
1126                 int j;
1127                 double error, error_sum = 0;
1128                 double scale, scale_sum = 0;
1129                 double p;
1130                 char type[3] = { 'Y','U','V' };
1131                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1132                 for (j = 0; j < 3; j++) {
1133                     if (is_last_report) {
1134                         error = enc->error[j];
1135                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1136                     } else {
1137                         error = enc->coded_frame->error[j];
1138                         scale = enc->width * enc->height * 255.0 * 255.0;
1139                     }
1140                     if (j)
1141                         scale /= 4;
1142                     error_sum += error;
1143                     scale_sum += scale;
1144                     p = psnr(error / scale);
1145                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1146                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1147                                ost->file_index, ost->index, type[i] | 32, p);
1148                 }
1149                 p = psnr(error_sum / scale_sum);
1150                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1151                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1152                            ost->file_index, ost->index, p);
1153             }
1154             vid = 1;
1155         }
1156         /* compute min output value */
1157         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
1158                                       ost->st->time_base, AV_TIME_BASE_Q));
1159     }
1160
1161     secs = pts / AV_TIME_BASE;
1162     us = pts % AV_TIME_BASE;
1163     mins = secs / 60;
1164     secs %= 60;
1165     hours = mins / 60;
1166     mins %= 60;
1167
1168     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1169
1170     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1171              "size=%8.0fkB time=", total_size / 1024.0);
1172     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1173              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1174              (100 * us) / AV_TIME_BASE);
1175     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1176              "bitrate=%6.1fkbits/s", bitrate);
1177     av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1178     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1179     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1180                hours, mins, secs, us);
1181
1182     if (nb_frames_dup || nb_frames_drop)
1183         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1184                 nb_frames_dup, nb_frames_drop);
1185     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1186     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1187
1188     if (print_stats || is_last_report) {
1189     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1190
1191     fflush(stderr);
1192     }
1193
1194     if (progress_avio) {
1195         av_bprintf(&buf_script, "progress=%s\n",
1196                    is_last_report ? "end" : "continue");
1197         avio_write(progress_avio, buf_script.str,
1198                    FFMIN(buf_script.len, buf_script.size - 1));
1199         avio_flush(progress_avio);
1200         av_bprint_finalize(&buf_script, NULL);
1201         if (is_last_report) {
1202             avio_close(progress_avio);
1203             progress_avio = NULL;
1204         }
1205     }
1206
1207     if (is_last_report) {
1208         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1209         av_log(NULL, AV_LOG_INFO, "\n");
1210         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1211                video_size / 1024.0,
1212                audio_size / 1024.0,
1213                subtitle_size / 1024.0,
1214                extra_size / 1024.0,
1215                100.0 * (total_size - raw) / raw
1216         );
1217         if(video_size + audio_size + subtitle_size + extra_size == 0){
1218             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1219         }
1220     }
1221 }
1222
1223 static void flush_encoders(void)
1224 {
1225     int i, ret;
1226
1227     for (i = 0; i < nb_output_streams; i++) {
1228         OutputStream   *ost = output_streams[i];
1229         AVCodecContext *enc = ost->st->codec;
1230         AVFormatContext *os = output_files[ost->file_index]->ctx;
1231         int stop_encoding = 0;
1232
1233         if (!ost->encoding_needed)
1234             continue;
1235
1236         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1237             continue;
1238         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1239             continue;
1240
1241         for (;;) {
1242             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1243             const char *desc;
1244             int64_t *size;
1245
1246             switch (ost->st->codec->codec_type) {
1247             case AVMEDIA_TYPE_AUDIO:
1248                 encode = avcodec_encode_audio2;
1249                 desc   = "Audio";
1250                 size   = &audio_size;
1251                 break;
1252             case AVMEDIA_TYPE_VIDEO:
1253                 encode = avcodec_encode_video2;
1254                 desc   = "Video";
1255                 size   = &video_size;
1256                 break;
1257             default:
1258                 stop_encoding = 1;
1259             }
1260
1261             if (encode) {
1262                 AVPacket pkt;
1263                 int got_packet;
1264                 av_init_packet(&pkt);
1265                 pkt.data = NULL;
1266                 pkt.size = 0;
1267
1268                 update_benchmark(NULL);
1269                 ret = encode(enc, &pkt, NULL, &got_packet);
1270                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1271                 if (ret < 0) {
1272                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1273                     exit_program(1);
1274                 }
1275                 *size += pkt.size;
1276                 if (ost->logfile && enc->stats_out) {
1277                     fprintf(ost->logfile, "%s", enc->stats_out);
1278                 }
1279                 if (!got_packet) {
1280                     stop_encoding = 1;
1281                     break;
1282                 }
1283                 if (pkt.pts != AV_NOPTS_VALUE)
1284                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1285                 if (pkt.dts != AV_NOPTS_VALUE)
1286                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1287                 write_frame(os, &pkt, ost);
1288             }
1289
1290             if (stop_encoding)
1291                 break;
1292         }
1293     }
1294 }
1295
1296 /*
1297  * Check whether a packet from ist should be written into ost at this time
1298  */
1299 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1300 {
1301     OutputFile *of = output_files[ost->file_index];
1302     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1303
1304     if (ost->source_index != ist_index)
1305         return 0;
1306
1307     if (of->start_time && ist->pts < of->start_time)
1308         return 0;
1309
1310     return 1;
1311 }
1312
1313 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1314 {
1315     OutputFile *of = output_files[ost->file_index];
1316     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1317     AVPicture pict;
1318     AVPacket opkt;
1319
1320     av_init_packet(&opkt);
1321
1322     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1323         !ost->copy_initial_nonkeyframes)
1324         return;
1325
1326     if (of->recording_time != INT64_MAX &&
1327         ist->pts >= of->recording_time + of->start_time) {
1328         ost->finished = 1;
1329         return;
1330     }
1331
1332     /* force the input stream PTS */
1333     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1334         audio_size += pkt->size;
1335     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1336         video_size += pkt->size;
1337         ost->sync_opts++;
1338     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1339         subtitle_size += pkt->size;
1340     }
1341
1342     if (pkt->pts != AV_NOPTS_VALUE)
1343         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1344     else
1345         opkt.pts = AV_NOPTS_VALUE;
1346
1347     if (pkt->dts == AV_NOPTS_VALUE)
1348         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1349     else
1350         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1351     opkt.dts -= ost_tb_start_time;
1352
1353     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1354     opkt.flags    = pkt->flags;
1355
1356     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1357     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1358        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1359        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1360        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1361        ) {
1362         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1363             opkt.destruct = av_destruct_packet;
1364     } else {
1365         opkt.data = pkt->data;
1366         opkt.size = pkt->size;
1367     }
1368
1369     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1370         /* store AVPicture in AVPacket, as expected by the output format */
1371         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1372         opkt.data = (uint8_t *)&pict;
1373         opkt.size = sizeof(AVPicture);
1374         opkt.flags |= AV_PKT_FLAG_KEY;
1375     }
1376
1377     write_frame(of->ctx, &opkt, ost);
1378     ost->st->codec->frame_number++;
1379     av_free_packet(&opkt);
1380 }
1381
1382 static void rate_emu_sleep(InputStream *ist)
1383 {
1384     if (input_files[ist->file_index]->rate_emu) {
1385         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
1386         int64_t now = av_gettime() - ist->start;
1387         if (pts > now)
1388             av_usleep(pts - now);
1389     }
1390 }
1391
1392 int guess_input_channel_layout(InputStream *ist)
1393 {
1394     AVCodecContext *dec = ist->st->codec;
1395
1396     if (!dec->channel_layout) {
1397         char layout_name[256];
1398
1399         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1400         if (!dec->channel_layout)
1401             return 0;
1402         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1403                                      dec->channels, dec->channel_layout);
1404         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1405                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1406     }
1407     return 1;
1408 }
1409
1410 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1411 {
1412     AVFrame *decoded_frame;
1413     AVCodecContext *avctx = ist->st->codec;
1414     int i, ret, resample_changed;
1415     AVRational decoded_frame_tb;
1416
1417     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1418         return AVERROR(ENOMEM);
1419     else
1420         avcodec_get_frame_defaults(ist->decoded_frame);
1421     decoded_frame = ist->decoded_frame;
1422
1423     update_benchmark(NULL);
1424     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1425     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1426
1427     if (ret >= 0 && avctx->sample_rate <= 0) {
1428         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1429         return AVERROR_INVALIDDATA;
1430     }
1431
1432     if (!*got_output || ret < 0) {
1433         if (!pkt->size) {
1434             for (i = 0; i < ist->nb_filters; i++)
1435                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL,
1436                                      AV_BUFFERSRC_FLAG_NO_COPY);
1437         }
1438         return ret;
1439     }
1440
1441 #if 1
1442     /* increment next_dts to use for the case where the input stream does not
1443        have timestamps or there are multiple frames in the packet */
1444     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1445                      avctx->sample_rate;
1446     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1447                      avctx->sample_rate;
1448 #endif
1449
1450     rate_emu_sleep(ist);
1451
1452     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1453                        ist->resample_channels       != avctx->channels               ||
1454                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1455                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1456     if (resample_changed) {
1457         char layout1[64], layout2[64];
1458
1459         if (!guess_input_channel_layout(ist)) {
1460             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1461                    "layout for Input Stream #%d.%d\n", ist->file_index,
1462                    ist->st->index);
1463             exit_program(1);
1464         }
1465         decoded_frame->channel_layout = avctx->channel_layout;
1466
1467         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1468                                      ist->resample_channel_layout);
1469         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1470                                      decoded_frame->channel_layout);
1471
1472         av_log(NULL, AV_LOG_INFO,
1473                "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",
1474                ist->file_index, ist->st->index,
1475                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1476                ist->resample_channels, layout1,
1477                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1478                avctx->channels, layout2);
1479
1480         ist->resample_sample_fmt     = decoded_frame->format;
1481         ist->resample_sample_rate    = decoded_frame->sample_rate;
1482         ist->resample_channel_layout = decoded_frame->channel_layout;
1483         ist->resample_channels       = avctx->channels;
1484
1485         for (i = 0; i < nb_filtergraphs; i++)
1486             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1487                 FilterGraph *fg = filtergraphs[i];
1488                 int j;
1489                 if (configure_filtergraph(fg) < 0) {
1490                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1491                     exit_program(1);
1492                 }
1493                 for (j = 0; j < fg->nb_outputs; j++) {
1494                     OutputStream *ost = fg->outputs[j]->ost;
1495                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1496                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1497                         av_buffersink_set_frame_size(ost->filter->filter,
1498                                                      ost->st->codec->frame_size);
1499                 }
1500             }
1501     }
1502
1503     /* if the decoder provides a pts, use it instead of the last packet pts.
1504        the decoder could be delaying output by a packet or more. */
1505     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1506         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1507         decoded_frame_tb   = avctx->time_base;
1508     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1509         decoded_frame->pts = decoded_frame->pkt_pts;
1510         pkt->pts           = AV_NOPTS_VALUE;
1511         decoded_frame_tb   = ist->st->time_base;
1512     } else if (pkt->pts != AV_NOPTS_VALUE) {
1513         decoded_frame->pts = pkt->pts;
1514         pkt->pts           = AV_NOPTS_VALUE;
1515         decoded_frame_tb   = ist->st->time_base;
1516     }else {
1517         decoded_frame->pts = ist->dts;
1518         decoded_frame_tb   = AV_TIME_BASE_Q;
1519     }
1520     if (decoded_frame->pts != AV_NOPTS_VALUE)
1521         decoded_frame->pts = av_rescale_q(decoded_frame->pts,
1522                                           decoded_frame_tb,
1523                                           (AVRational){1, ist->st->codec->sample_rate});
1524     for (i = 0; i < ist->nb_filters; i++)
1525         av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0);
1526
1527     decoded_frame->pts = AV_NOPTS_VALUE;
1528
1529     return ret;
1530 }
1531
1532 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1533 {
1534     AVFrame *decoded_frame;
1535     void *buffer_to_free = NULL;
1536     int i, ret = 0, resample_changed;
1537     int64_t best_effort_timestamp;
1538     AVRational *frame_sample_aspect;
1539     float quality;
1540
1541     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1542         return AVERROR(ENOMEM);
1543     else
1544         avcodec_get_frame_defaults(ist->decoded_frame);
1545     decoded_frame = ist->decoded_frame;
1546     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1547
1548     update_benchmark(NULL);
1549     ret = avcodec_decode_video2(ist->st->codec,
1550                                 decoded_frame, got_output, pkt);
1551     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1552     if (!*got_output || ret < 0) {
1553         if (!pkt->size) {
1554             for (i = 0; i < ist->nb_filters; i++)
1555                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, AV_BUFFERSRC_FLAG_NO_COPY);
1556         }
1557         return ret;
1558     }
1559
1560     quality = same_quant ? decoded_frame->quality : 0;
1561
1562     if(ist->top_field_first>=0)
1563         decoded_frame->top_field_first = ist->top_field_first;
1564
1565     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1566     if(best_effort_timestamp != AV_NOPTS_VALUE)
1567         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1568
1569     if (debug_ts) {
1570         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1571                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1572                 ist->st->index, av_ts2str(decoded_frame->pts),
1573                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1574                 best_effort_timestamp,
1575                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1576                 decoded_frame->key_frame, decoded_frame->pict_type);
1577     }
1578
1579     pkt->size = 0;
1580     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1581
1582     rate_emu_sleep(ist);
1583
1584     if (ist->st->sample_aspect_ratio.num)
1585         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1586
1587     resample_changed = ist->resample_width   != decoded_frame->width  ||
1588                        ist->resample_height  != decoded_frame->height ||
1589                        ist->resample_pix_fmt != decoded_frame->format;
1590     if (resample_changed) {
1591         av_log(NULL, AV_LOG_INFO,
1592                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1593                ist->file_index, ist->st->index,
1594                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1595                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1596
1597         ist->resample_width   = decoded_frame->width;
1598         ist->resample_height  = decoded_frame->height;
1599         ist->resample_pix_fmt = decoded_frame->format;
1600
1601         for (i = 0; i < nb_filtergraphs; i++)
1602             if (ist_in_filtergraph(filtergraphs[i], ist) &&
1603                 configure_filtergraph(filtergraphs[i]) < 0) {
1604                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1605                 exit_program(1);
1606             }
1607     }
1608
1609     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1610     for (i = 0; i < ist->nb_filters; i++) {
1611         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
1612                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
1613                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
1614         // XXX what an ugly hack
1615         if (ist->filters[i]->graph->nb_outputs == 1)
1616             ist->filters[i]->graph->outputs[0]->ost->last_quality = quality;
1617
1618         if (!frame_sample_aspect->num)
1619             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1620         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
1621             FrameBuffer      *buf = decoded_frame->opaque;
1622             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1623                                         decoded_frame->data, decoded_frame->linesize,
1624                                         AV_PERM_READ | AV_PERM_PRESERVE,
1625                                         ist->st->codec->width, ist->st->codec->height,
1626                                         ist->st->codec->pix_fmt);
1627
1628             avfilter_copy_frame_props(fb, decoded_frame);
1629             fb->buf->priv           = buf;
1630             fb->buf->free           = filter_release_buffer;
1631
1632             av_assert0(buf->refcount>0);
1633             buf->refcount++;
1634             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
1635                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
1636                                  AV_BUFFERSRC_FLAG_NO_COPY);
1637         } else
1638         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0)<0) {
1639             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
1640             exit_program(1);
1641         }
1642
1643     }
1644
1645     av_free(buffer_to_free);
1646     return ret;
1647 }
1648
1649 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1650 {
1651     AVSubtitle subtitle;
1652     int64_t pts = pkt->pts;
1653     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1654                                           &subtitle, got_output, pkt);
1655     if (ret < 0 || !*got_output) {
1656         if (!pkt->size)
1657             sub2video_flush(ist);
1658         return ret;
1659     }
1660
1661     if (ist->fix_sub_duration) {
1662         if (ist->prev_sub.got_output) {
1663             int end = av_rescale_q(pts - ist->prev_sub.pts, ist->st->time_base,
1664                                    (AVRational){ 1, 1000 });
1665             if (end < ist->prev_sub.subtitle.end_display_time) {
1666                 av_log(ist->st->codec, AV_LOG_DEBUG,
1667                        "Subtitle duration reduced from %d to %d\n",
1668                        ist->prev_sub.subtitle.end_display_time, end);
1669                 ist->prev_sub.subtitle.end_display_time = end;
1670             }
1671         }
1672         FFSWAP(int64_t,    pts,         ist->prev_sub.pts);
1673         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1674         FFSWAP(int,        ret,         ist->prev_sub.ret);
1675         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1676     }
1677
1678     if (!*got_output || !subtitle.num_rects)
1679         return ret;
1680
1681     rate_emu_sleep(ist);
1682
1683     sub2video_update(ist, &subtitle, pkt->pts);
1684
1685     for (i = 0; i < nb_output_streams; i++) {
1686         OutputStream *ost = output_streams[i];
1687
1688         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1689             continue;
1690
1691         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pts);
1692     }
1693
1694     avsubtitle_free(&subtitle);
1695     return ret;
1696 }
1697
1698 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1699 static int output_packet(InputStream *ist, const AVPacket *pkt)
1700 {
1701     int ret = 0, i;
1702     int got_output;
1703
1704     AVPacket avpkt;
1705     if (!ist->saw_first_ts) {
1706         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;
1707         ist->pts = 0;
1708         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1709             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1710             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1711         }
1712         ist->saw_first_ts = 1;
1713     }
1714
1715     if (ist->next_dts == AV_NOPTS_VALUE)
1716         ist->next_dts = ist->dts;
1717     if (ist->next_pts == AV_NOPTS_VALUE)
1718         ist->next_pts = ist->pts;
1719
1720     if (pkt == NULL) {
1721         /* EOF handling */
1722         av_init_packet(&avpkt);
1723         avpkt.data = NULL;
1724         avpkt.size = 0;
1725         goto handle_eof;
1726     } else {
1727         avpkt = *pkt;
1728     }
1729
1730     if (pkt->dts != AV_NOPTS_VALUE) {
1731         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1732         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1733             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1734     }
1735
1736     // while we have more to decode or while the decoder did output something on EOF
1737     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1738         int duration;
1739     handle_eof:
1740
1741         ist->pts = ist->next_pts;
1742         ist->dts = ist->next_dts;
1743
1744         if (avpkt.size && avpkt.size != pkt->size) {
1745             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1746                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1747             ist->showed_multi_packet_warning = 1;
1748         }
1749
1750         switch (ist->st->codec->codec_type) {
1751         case AVMEDIA_TYPE_AUDIO:
1752             ret = decode_audio    (ist, &avpkt, &got_output);
1753             break;
1754         case AVMEDIA_TYPE_VIDEO:
1755             ret = decode_video    (ist, &avpkt, &got_output);
1756             if (avpkt.duration) {
1757                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1758             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1759                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1760                 duration = ((int64_t)AV_TIME_BASE *
1761                                 ist->st->codec->time_base.num * ticks) /
1762                                 ist->st->codec->time_base.den;
1763             } else
1764                 duration = 0;
1765
1766             if(ist->dts != AV_NOPTS_VALUE && duration) {
1767                 ist->next_dts += duration;
1768             }else
1769                 ist->next_dts = AV_NOPTS_VALUE;
1770
1771             if (got_output)
1772                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1773             break;
1774         case AVMEDIA_TYPE_SUBTITLE:
1775             ret = transcode_subtitles(ist, &avpkt, &got_output);
1776             break;
1777         default:
1778             return -1;
1779         }
1780
1781         if (ret < 0)
1782             return ret;
1783
1784         avpkt.dts=
1785         avpkt.pts= AV_NOPTS_VALUE;
1786
1787         // touch data and size only if not EOF
1788         if (pkt) {
1789             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1790                 ret = avpkt.size;
1791             avpkt.data += ret;
1792             avpkt.size -= ret;
1793         }
1794         if (!got_output) {
1795             continue;
1796         }
1797     }
1798
1799     /* handle stream copy */
1800     if (!ist->decoding_needed) {
1801         rate_emu_sleep(ist);
1802         ist->dts = ist->next_dts;
1803         switch (ist->st->codec->codec_type) {
1804         case AVMEDIA_TYPE_AUDIO:
1805             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1806                              ist->st->codec->sample_rate;
1807             break;
1808         case AVMEDIA_TYPE_VIDEO:
1809             if (pkt->duration) {
1810                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1811             } else if(ist->st->codec->time_base.num != 0) {
1812                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1813                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1814                                   ist->st->codec->time_base.num * ticks) /
1815                                   ist->st->codec->time_base.den;
1816             }
1817             break;
1818         }
1819         ist->pts = ist->dts;
1820         ist->next_pts = ist->next_dts;
1821     }
1822     for (i = 0; pkt && i < nb_output_streams; i++) {
1823         OutputStream *ost = output_streams[i];
1824
1825         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1826             continue;
1827
1828         do_streamcopy(ist, ost, pkt);
1829     }
1830
1831     return 0;
1832 }
1833
1834 static void print_sdp(void)
1835 {
1836     char sdp[2048];
1837     int i;
1838     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1839
1840     if (!avc)
1841         exit_program(1);
1842     for (i = 0; i < nb_output_files; i++)
1843         avc[i] = output_files[i]->ctx;
1844
1845     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1846     printf("SDP:\n%s\n", sdp);
1847     fflush(stdout);
1848     av_freep(&avc);
1849 }
1850
1851 static int init_input_stream(int ist_index, char *error, int error_len)
1852 {
1853     InputStream *ist = input_streams[ist_index];
1854
1855     if (ist->decoding_needed) {
1856         AVCodec *codec = ist->dec;
1857         if (!codec) {
1858             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1859                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1860             return AVERROR(EINVAL);
1861         }
1862
1863         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
1864         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
1865             ist->st->codec->get_buffer     = codec_get_buffer;
1866             ist->st->codec->release_buffer = codec_release_buffer;
1867             ist->st->codec->opaque         = &ist->buffer_pool;
1868         }
1869
1870         if (!av_dict_get(ist->opts, "threads", NULL, 0))
1871             av_dict_set(&ist->opts, "threads", "auto", 0);
1872         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
1873             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1874                     ist->file_index, ist->st->index);
1875             return AVERROR(EINVAL);
1876         }
1877         assert_codec_experimental(ist->st->codec, 0);
1878         assert_avoptions(ist->opts);
1879     }
1880
1881     ist->next_pts = AV_NOPTS_VALUE;
1882     ist->next_dts = AV_NOPTS_VALUE;
1883     ist->is_start = 1;
1884
1885     return 0;
1886 }
1887
1888 static InputStream *get_input_stream(OutputStream *ost)
1889 {
1890     if (ost->source_index >= 0)
1891         return input_streams[ost->source_index];
1892     return NULL;
1893 }
1894
1895 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1896                                     AVCodecContext *avctx)
1897 {
1898     char *p;
1899     int n = 1, i;
1900     int64_t t;
1901
1902     for (p = kf; *p; p++)
1903         if (*p == ',')
1904             n++;
1905     ost->forced_kf_count = n;
1906     ost->forced_kf_pts   = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1907     if (!ost->forced_kf_pts) {
1908         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1909         exit_program(1);
1910     }
1911
1912     p = kf;
1913     for (i = 0; i < n; i++) {
1914         char *next = strchr(p, ',');
1915
1916         if (next)
1917             *next++ = 0;
1918
1919         t = parse_time_or_die("force_key_frames", p, 1);
1920         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1921
1922         p = next;
1923     }
1924 }
1925
1926 static void report_new_stream(int input_index, AVPacket *pkt)
1927 {
1928     InputFile *file = input_files[input_index];
1929     AVStream *st = file->ctx->streams[pkt->stream_index];
1930
1931     if (pkt->stream_index < file->nb_streams_warn)
1932         return;
1933     av_log(file->ctx, AV_LOG_WARNING,
1934            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
1935            av_get_media_type_string(st->codec->codec_type),
1936            input_index, pkt->stream_index,
1937            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
1938     file->nb_streams_warn = pkt->stream_index + 1;
1939 }
1940
1941 static int transcode_init(void)
1942 {
1943     int ret = 0, i, j, k;
1944     AVFormatContext *oc;
1945     AVCodecContext *codec;
1946     OutputStream *ost;
1947     InputStream *ist;
1948     char error[1024];
1949     int want_sdp = 1;
1950
1951     /* init framerate emulation */
1952     for (i = 0; i < nb_input_files; i++) {
1953         InputFile *ifile = input_files[i];
1954         if (ifile->rate_emu)
1955             for (j = 0; j < ifile->nb_streams; j++)
1956                 input_streams[j + ifile->ist_index]->start = av_gettime();
1957     }
1958
1959     /* output stream init */
1960     for (i = 0; i < nb_output_files; i++) {
1961         oc = output_files[i]->ctx;
1962         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
1963             av_dump_format(oc, i, oc->filename, 1);
1964             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
1965             return AVERROR(EINVAL);
1966         }
1967     }
1968
1969     /* init complex filtergraphs */
1970     for (i = 0; i < nb_filtergraphs; i++)
1971         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
1972             return ret;
1973
1974     /* for each output stream, we compute the right encoding parameters */
1975     for (i = 0; i < nb_output_streams; i++) {
1976         AVCodecContext *icodec = NULL;
1977         ost = output_streams[i];
1978         oc  = output_files[ost->file_index]->ctx;
1979         ist = get_input_stream(ost);
1980
1981         if (ost->attachment_filename)
1982             continue;
1983
1984         codec  = ost->st->codec;
1985
1986         if (ist) {
1987             icodec = ist->st->codec;
1988
1989             ost->st->disposition          = ist->st->disposition;
1990             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
1991             codec->chroma_sample_location = icodec->chroma_sample_location;
1992         }
1993
1994         if (ost->stream_copy) {
1995             uint64_t extra_size;
1996
1997             av_assert0(ist && !ost->filter);
1998
1999             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2000
2001             if (extra_size > INT_MAX) {
2002                 return AVERROR(EINVAL);
2003             }
2004
2005             /* if stream_copy is selected, no need to decode or encode */
2006             codec->codec_id   = icodec->codec_id;
2007             codec->codec_type = icodec->codec_type;
2008
2009             if (!codec->codec_tag) {
2010                 if (!oc->oformat->codec_tag ||
2011                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2012                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2013                     codec->codec_tag = icodec->codec_tag;
2014             }
2015
2016             codec->bit_rate       = icodec->bit_rate;
2017             codec->rc_max_rate    = icodec->rc_max_rate;
2018             codec->rc_buffer_size = icodec->rc_buffer_size;
2019             codec->field_order    = icodec->field_order;
2020             codec->extradata      = av_mallocz(extra_size);
2021             if (!codec->extradata) {
2022                 return AVERROR(ENOMEM);
2023             }
2024             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2025             codec->extradata_size= icodec->extradata_size;
2026             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2027
2028             codec->time_base = ist->st->time_base;
2029             /*
2030              * Avi is a special case here because it supports variable fps but
2031              * having the fps and timebase differe significantly adds quite some
2032              * overhead
2033              */
2034             if(!strcmp(oc->oformat->name, "avi")) {
2035                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2036                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2037                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2038                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2039                      || copy_tb==2){
2040                     codec->time_base.num = ist->st->r_frame_rate.den;
2041                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2042                     codec->ticks_per_frame = 2;
2043                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2044                                  && av_q2d(ist->st->time_base) < 1.0/500
2045                     || copy_tb==0){
2046                     codec->time_base = icodec->time_base;
2047                     codec->time_base.num *= icodec->ticks_per_frame;
2048                     codec->time_base.den *= 2;
2049                     codec->ticks_per_frame = 2;
2050                 }
2051             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2052                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2053                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2054             ) {
2055                 if(   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2056                                 && av_q2d(ist->st->time_base) < 1.0/500
2057                    || copy_tb==0){
2058                     codec->time_base = icodec->time_base;
2059                     codec->time_base.num *= icodec->ticks_per_frame;
2060                 }
2061             }
2062
2063             if(ost->frame_rate.num)
2064                 codec->time_base = av_inv_q(ost->frame_rate);
2065
2066             av_reduce(&codec->time_base.num, &codec->time_base.den,
2067                         codec->time_base.num, codec->time_base.den, INT_MAX);
2068
2069             switch (codec->codec_type) {
2070             case AVMEDIA_TYPE_AUDIO:
2071                 if (audio_volume != 256) {
2072                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2073                     exit_program(1);
2074                 }
2075                 codec->channel_layout     = icodec->channel_layout;
2076                 codec->sample_rate        = icodec->sample_rate;
2077                 codec->channels           = icodec->channels;
2078                 codec->frame_size         = icodec->frame_size;
2079                 codec->audio_service_type = icodec->audio_service_type;
2080                 codec->block_align        = icodec->block_align;
2081                 if((codec->block_align == 1 || codec->block_align == 1152) && codec->codec_id == AV_CODEC_ID_MP3)
2082                     codec->block_align= 0;
2083                 if(codec->codec_id == AV_CODEC_ID_AC3)
2084                     codec->block_align= 0;
2085                 break;
2086             case AVMEDIA_TYPE_VIDEO:
2087                 codec->pix_fmt            = icodec->pix_fmt;
2088                 codec->width              = icodec->width;
2089                 codec->height             = icodec->height;
2090                 codec->has_b_frames       = icodec->has_b_frames;
2091                 if (!codec->sample_aspect_ratio.num) {
2092                     codec->sample_aspect_ratio   =
2093                     ost->st->sample_aspect_ratio =
2094                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2095                         ist->st->codec->sample_aspect_ratio.num ?
2096                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2097                 }
2098                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2099                 break;
2100             case AVMEDIA_TYPE_SUBTITLE:
2101                 codec->width  = icodec->width;
2102                 codec->height = icodec->height;
2103                 break;
2104             case AVMEDIA_TYPE_DATA:
2105             case AVMEDIA_TYPE_ATTACHMENT:
2106                 break;
2107             default:
2108                 abort();
2109             }
2110         } else {
2111             if (!ost->enc)
2112                 ost->enc = avcodec_find_encoder(codec->codec_id);
2113             if (!ost->enc) {
2114                 /* should only happen when a default codec is not present. */
2115                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2116                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2117                 ret = AVERROR(EINVAL);
2118                 goto dump_format;
2119             }
2120
2121             if (ist)
2122                 ist->decoding_needed = 1;
2123             ost->encoding_needed = 1;
2124
2125             if (!ost->filter &&
2126                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2127                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2128                     FilterGraph *fg;
2129                     fg = init_simple_filtergraph(ist, ost);
2130                     if (configure_filtergraph(fg)) {
2131                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2132                         exit(1);
2133                     }
2134             }
2135
2136             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2137                 if (ost->filter && !ost->frame_rate.num)
2138                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2139                 if (ist && !ost->frame_rate.num)
2140                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2141 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2142                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2143                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2144                     ost->frame_rate = ost->enc->supported_framerates[idx];
2145                 }
2146             }
2147
2148             switch (codec->codec_type) {
2149             case AVMEDIA_TYPE_AUDIO:
2150                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2151                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2152                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2153                 codec->channels       = av_get_channel_layout_nb_channels(codec->channel_layout);
2154                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2155                 break;
2156             case AVMEDIA_TYPE_VIDEO:
2157                 codec->time_base = av_inv_q(ost->frame_rate);
2158                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2159                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2160                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2161                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2162                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2163                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2164                 }
2165                 for (j = 0; j < ost->forced_kf_count; j++)
2166                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2167                                                          AV_TIME_BASE_Q,
2168                                                          codec->time_base);
2169
2170                 codec->width  = ost->filter->filter->inputs[0]->w;
2171                 codec->height = ost->filter->filter->inputs[0]->h;
2172                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2173                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
2174                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
2175                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2176                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2177
2178                 if (!icodec ||
2179                     codec->width   != icodec->width  ||
2180                     codec->height  != icodec->height ||
2181                     codec->pix_fmt != icodec->pix_fmt) {
2182                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2183                 }
2184
2185                 if (ost->forced_keyframes)
2186                     parse_forced_key_frames(ost->forced_keyframes, ost,
2187                                             ost->st->codec);
2188                 break;
2189             case AVMEDIA_TYPE_SUBTITLE:
2190                 codec->time_base = (AVRational){1, 1000};
2191                 if (!codec->width) {
2192                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2193                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2194                 }
2195                 break;
2196             default:
2197                 abort();
2198                 break;
2199             }
2200             /* two pass mode */
2201             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2202                 char logfilename[1024];
2203                 FILE *f;
2204
2205                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2206                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2207                          i);
2208                 if (!strcmp(ost->enc->name, "libx264")) {
2209                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2210                 } else {
2211                     if (codec->flags & CODEC_FLAG_PASS2) {
2212                         char  *logbuffer;
2213                         size_t logbuffer_size;
2214                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2215                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2216                                    logfilename);
2217                             exit_program(1);
2218                         }
2219                         codec->stats_in = logbuffer;
2220                     }
2221                     if (codec->flags & CODEC_FLAG_PASS1) {
2222                         f = fopen(logfilename, "wb");
2223                         if (!f) {
2224                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2225                                 logfilename, strerror(errno));
2226                             exit_program(1);
2227                         }
2228                         ost->logfile = f;
2229                     }
2230                 }
2231             }
2232         }
2233     }
2234
2235     /* open each encoder */
2236     for (i = 0; i < nb_output_streams; i++) {
2237         ost = output_streams[i];
2238         if (ost->encoding_needed) {
2239             AVCodec      *codec = ost->enc;
2240             AVCodecContext *dec = NULL;
2241
2242             if ((ist = get_input_stream(ost)))
2243                 dec = ist->st->codec;
2244             if (dec && dec->subtitle_header) {
2245                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2246                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2247                 if (!ost->st->codec->subtitle_header) {
2248                     ret = AVERROR(ENOMEM);
2249                     goto dump_format;
2250                 }
2251                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2252                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2253             }
2254             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2255                 av_dict_set(&ost->opts, "threads", "auto", 0);
2256             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2257                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2258                         ost->file_index, ost->index);
2259                 ret = AVERROR(EINVAL);
2260                 goto dump_format;
2261             }
2262             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2263                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2264                 av_buffersink_set_frame_size(ost->filter->filter,
2265                                              ost->st->codec->frame_size);
2266             assert_codec_experimental(ost->st->codec, 1);
2267             assert_avoptions(ost->opts);
2268             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2269                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2270                                              " It takes bits/s as argument, not kbits/s\n");
2271             extra_size += ost->st->codec->extradata_size;
2272
2273             if (ost->st->codec->me_threshold)
2274                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
2275         }
2276     }
2277
2278     /* init input streams */
2279     for (i = 0; i < nb_input_streams; i++)
2280         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
2281             goto dump_format;
2282
2283     /* discard unused programs */
2284     for (i = 0; i < nb_input_files; i++) {
2285         InputFile *ifile = input_files[i];
2286         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2287             AVProgram *p = ifile->ctx->programs[j];
2288             int discard  = AVDISCARD_ALL;
2289
2290             for (k = 0; k < p->nb_stream_indexes; k++)
2291                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2292                     discard = AVDISCARD_DEFAULT;
2293                     break;
2294                 }
2295             p->discard = discard;
2296         }
2297     }
2298
2299     /* open files and write file headers */
2300     for (i = 0; i < nb_output_files; i++) {
2301         oc = output_files[i]->ctx;
2302         oc->interrupt_callback = int_cb;
2303         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2304             char errbuf[128];
2305             const char *errbuf_ptr = errbuf;
2306             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
2307                 errbuf_ptr = strerror(AVUNERROR(ret));
2308             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
2309             ret = AVERROR(EINVAL);
2310             goto dump_format;
2311         }
2312 //         assert_avoptions(output_files[i]->opts);
2313         if (strcmp(oc->oformat->name, "rtp")) {
2314             want_sdp = 0;
2315         }
2316     }
2317
2318  dump_format:
2319     /* dump the file output parameters - cannot be done before in case
2320        of stream copy */
2321     for (i = 0; i < nb_output_files; i++) {
2322         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2323     }
2324
2325     /* dump the stream mapping */
2326     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2327     for (i = 0; i < nb_input_streams; i++) {
2328         ist = input_streams[i];
2329
2330         for (j = 0; j < ist->nb_filters; j++) {
2331             if (ist->filters[j]->graph->graph_desc) {
2332                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2333                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2334                        ist->filters[j]->name);
2335                 if (nb_filtergraphs > 1)
2336                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2337                 av_log(NULL, AV_LOG_INFO, "\n");
2338             }
2339         }
2340     }
2341
2342     for (i = 0; i < nb_output_streams; i++) {
2343         ost = output_streams[i];
2344
2345         if (ost->attachment_filename) {
2346             /* an attached file */
2347             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2348                    ost->attachment_filename, ost->file_index, ost->index);
2349             continue;
2350         }
2351
2352         if (ost->filter && ost->filter->graph->graph_desc) {
2353             /* output from a complex graph */
2354             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2355             if (nb_filtergraphs > 1)
2356                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2357
2358             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2359                    ost->index, ost->enc ? ost->enc->name : "?");
2360             continue;
2361         }
2362
2363         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2364                input_streams[ost->source_index]->file_index,
2365                input_streams[ost->source_index]->st->index,
2366                ost->file_index,
2367                ost->index);
2368         if (ost->sync_ist != input_streams[ost->source_index])
2369             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2370                    ost->sync_ist->file_index,
2371                    ost->sync_ist->st->index);
2372         if (ost->stream_copy)
2373             av_log(NULL, AV_LOG_INFO, " (copy)");
2374         else
2375             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2376                    input_streams[ost->source_index]->dec->name : "?",
2377                    ost->enc ? ost->enc->name : "?");
2378         av_log(NULL, AV_LOG_INFO, "\n");
2379     }
2380
2381     if (ret) {
2382         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2383         return ret;
2384     }
2385
2386     if (want_sdp) {
2387         print_sdp();
2388     }
2389
2390     return 0;
2391 }
2392
2393 /**
2394  * @return 1 if there are still streams where more output is wanted,
2395  *         0 otherwise
2396  */
2397 static int need_output(void)
2398 {
2399     int i;
2400
2401     for (i = 0; i < nb_output_streams; i++) {
2402         OutputStream *ost    = output_streams[i];
2403         OutputFile *of       = output_files[ost->file_index];
2404         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2405
2406         if (ost->finished ||
2407             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2408             continue;
2409         if (ost->frame_number >= ost->max_frames) {
2410             int j;
2411             for (j = 0; j < of->ctx->nb_streams; j++)
2412                 output_streams[of->ost_index + j]->finished = 1;
2413             continue;
2414         }
2415
2416         return 1;
2417     }
2418
2419     return 0;
2420 }
2421
2422 static int input_acceptable(InputStream *ist)
2423 {
2424     av_assert1(!ist->discard);
2425     return !input_files[ist->file_index]->eagain &&
2426            !input_files[ist->file_index]->eof_reached;
2427 }
2428
2429 static int find_graph_input(FilterGraph *graph)
2430 {
2431     int i, nb_req_max = 0, file_index = -1;
2432
2433     for (i = 0; i < graph->nb_inputs; i++) {
2434         int nb_req = av_buffersrc_get_nb_failed_requests(graph->inputs[i]->filter);
2435         if (nb_req > nb_req_max) {
2436             InputStream *ist = graph->inputs[i]->ist;
2437             if (input_acceptable(ist)) {
2438                 nb_req_max = nb_req;
2439                 file_index = ist->file_index;
2440             }
2441         }
2442     }
2443
2444     return file_index;
2445 }
2446
2447 /**
2448  * Select the input file to read from.
2449  *
2450  * @return  >=0 index of the input file to use;
2451  *          -1  if no file is acceptable;
2452  *          -2  to read from filters without reading from a file
2453  */
2454 static int select_input_file(void)
2455 {
2456     int i, ret, nb_active_out = nb_output_streams, ost_index = -1;
2457     int64_t opts_min;
2458     OutputStream *ost;
2459     AVFilterBufferRef *dummy;
2460
2461     for (i = 0; i < nb_output_streams; i++)
2462         nb_active_out -= output_streams[i]->unavailable =
2463             output_streams[i]->finished;
2464     while (nb_active_out) {
2465         opts_min = INT64_MAX;
2466         ost_index = -1;
2467         for (i = 0; i < nb_output_streams; i++) {
2468             OutputStream *ost = output_streams[i];
2469             int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2470                                         AV_TIME_BASE_Q);
2471             if (!ost->unavailable && opts < opts_min) {
2472                 opts_min  = opts;
2473                 ost_index = i;
2474             }
2475         }
2476         if (ost_index < 0)
2477             return -1;
2478
2479         ost = output_streams[ost_index];
2480         if (ost->source_index >= 0) {
2481             /* ost is directly connected to an input */
2482             InputStream *ist = input_streams[ost->source_index];
2483             if (input_acceptable(ist))
2484                 return ist->file_index;
2485         } else {
2486             /* ost is connected to a complex filtergraph */
2487             av_assert1(ost->filter);
2488             ret = av_buffersink_get_buffer_ref(ost->filter->filter, &dummy,
2489                                                AV_BUFFERSINK_FLAG_PEEK);
2490             if (ret >= 0)
2491                 return -2;
2492             ret = find_graph_input(ost->filter->graph);
2493             if (ret >= 0)
2494                 return ret;
2495         }
2496         ost->unavailable = 1;
2497         nb_active_out--;
2498     }
2499     return -1;
2500 }
2501
2502 static int check_keyboard_interaction(int64_t cur_time)
2503 {
2504     int i, ret, key;
2505     static int64_t last_time;
2506     if (received_nb_signals)
2507         return AVERROR_EXIT;
2508     /* read_key() returns 0 on EOF */
2509     if(cur_time - last_time >= 100000 && !run_as_daemon){
2510         key =  read_key();
2511         last_time = cur_time;
2512     }else
2513         key = -1;
2514     if (key == 'q')
2515         return AVERROR_EXIT;
2516     if (key == '+') av_log_set_level(av_log_get_level()+10);
2517     if (key == '-') av_log_set_level(av_log_get_level()-10);
2518     if (key == 's') qp_hist     ^= 1;
2519     if (key == 'h'){
2520         if (do_hex_dump){
2521             do_hex_dump = do_pkt_dump = 0;
2522         } else if(do_pkt_dump){
2523             do_hex_dump = 1;
2524         } else
2525             do_pkt_dump = 1;
2526         av_log_set_level(AV_LOG_DEBUG);
2527     }
2528     if (key == 'c' || key == 'C'){
2529         char buf[4096], target[64], command[256], arg[256] = {0};
2530         double time;
2531         int k, n = 0;
2532         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2533         i = 0;
2534         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2535             if (k > 0)
2536                 buf[i++] = k;
2537         buf[i] = 0;
2538         if (k > 0 &&
2539             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2540             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2541                    target, time, command, arg);
2542             for (i = 0; i < nb_filtergraphs; i++) {
2543                 FilterGraph *fg = filtergraphs[i];
2544                 if (fg->graph) {
2545                     if (time < 0) {
2546                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2547                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2548                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2549                     } else {
2550                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2551                     }
2552                 }
2553             }
2554         } else {
2555             av_log(NULL, AV_LOG_ERROR,
2556                    "Parse error, at least 3 arguments were expected, "
2557                    "only %d given in string '%s'\n", n, buf);
2558         }
2559     }
2560     if (key == 'd' || key == 'D'){
2561         int debug=0;
2562         if(key == 'D') {
2563             debug = input_streams[0]->st->codec->debug<<1;
2564             if(!debug) debug = 1;
2565             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2566                 debug += debug;
2567         }else
2568             if(scanf("%d", &debug)!=1)
2569                 fprintf(stderr,"error parsing debug value\n");
2570         for(i=0;i<nb_input_streams;i++) {
2571             input_streams[i]->st->codec->debug = debug;
2572         }
2573         for(i=0;i<nb_output_streams;i++) {
2574             OutputStream *ost = output_streams[i];
2575             ost->st->codec->debug = debug;
2576         }
2577         if(debug) av_log_set_level(AV_LOG_DEBUG);
2578         fprintf(stderr,"debug=%d\n", debug);
2579     }
2580     if (key == '?'){
2581         fprintf(stderr, "key    function\n"
2582                         "?      show this help\n"
2583                         "+      increase verbosity\n"
2584                         "-      decrease verbosity\n"
2585                         "c      Send command to filtergraph\n"
2586                         "D      cycle through available debug modes\n"
2587                         "h      dump packets/hex press to cycle through the 3 states\n"
2588                         "q      quit\n"
2589                         "s      Show QP histogram\n"
2590         );
2591     }
2592     return 0;
2593 }
2594
2595 #if HAVE_PTHREADS
2596 static void *input_thread(void *arg)
2597 {
2598     InputFile *f = arg;
2599     int ret = 0;
2600
2601     while (!transcoding_finished && ret >= 0) {
2602         AVPacket pkt;
2603         ret = av_read_frame(f->ctx, &pkt);
2604
2605         if (ret == AVERROR(EAGAIN)) {
2606             av_usleep(10000);
2607             ret = 0;
2608             continue;
2609         } else if (ret < 0)
2610             break;
2611
2612         pthread_mutex_lock(&f->fifo_lock);
2613         while (!av_fifo_space(f->fifo))
2614             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2615
2616         av_dup_packet(&pkt);
2617         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2618
2619         pthread_mutex_unlock(&f->fifo_lock);
2620     }
2621
2622     f->finished = 1;
2623     return NULL;
2624 }
2625
2626 static void free_input_threads(void)
2627 {
2628     int i;
2629
2630     if (nb_input_files == 1)
2631         return;
2632
2633     transcoding_finished = 1;
2634
2635     for (i = 0; i < nb_input_files; i++) {
2636         InputFile *f = input_files[i];
2637         AVPacket pkt;
2638
2639         if (!f->fifo || f->joined)
2640             continue;
2641
2642         pthread_mutex_lock(&f->fifo_lock);
2643         while (av_fifo_size(f->fifo)) {
2644             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2645             av_free_packet(&pkt);
2646         }
2647         pthread_cond_signal(&f->fifo_cond);
2648         pthread_mutex_unlock(&f->fifo_lock);
2649
2650         pthread_join(f->thread, NULL);
2651         f->joined = 1;
2652
2653         while (av_fifo_size(f->fifo)) {
2654             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2655             av_free_packet(&pkt);
2656         }
2657         av_fifo_free(f->fifo);
2658     }
2659 }
2660
2661 static int init_input_threads(void)
2662 {
2663     int i, ret;
2664
2665     if (nb_input_files == 1)
2666         return 0;
2667
2668     for (i = 0; i < nb_input_files; i++) {
2669         InputFile *f = input_files[i];
2670
2671         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2672             return AVERROR(ENOMEM);
2673
2674         pthread_mutex_init(&f->fifo_lock, NULL);
2675         pthread_cond_init (&f->fifo_cond, NULL);
2676
2677         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2678             return AVERROR(ret);
2679     }
2680     return 0;
2681 }
2682
2683 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2684 {
2685     int ret = 0;
2686
2687     pthread_mutex_lock(&f->fifo_lock);
2688
2689     if (av_fifo_size(f->fifo)) {
2690         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2691         pthread_cond_signal(&f->fifo_cond);
2692     } else {
2693         if (f->finished)
2694             ret = AVERROR_EOF;
2695         else
2696             ret = AVERROR(EAGAIN);
2697     }
2698
2699     pthread_mutex_unlock(&f->fifo_lock);
2700
2701     return ret;
2702 }
2703 #endif
2704
2705 static int get_input_packet(InputFile *f, AVPacket *pkt)
2706 {
2707 #if HAVE_PTHREADS
2708     if (nb_input_files > 1)
2709         return get_input_packet_mt(f, pkt);
2710 #endif
2711     return av_read_frame(f->ctx, pkt);
2712 }
2713
2714 static int got_eagain(void)
2715 {
2716     int i;
2717     for (i = 0; i < nb_input_files; i++)
2718         if (input_files[i]->eagain)
2719             return 1;
2720     return 0;
2721 }
2722
2723 static void reset_eagain(void)
2724 {
2725     int i;
2726     for (i = 0; i < nb_input_files; i++)
2727         input_files[i]->eagain = 0;
2728 }
2729
2730 /**
2731  * @return
2732  * - 0 -- one packet was read and processed
2733  * - AVERROR(EAGAIN) -- no packets were available for selected file,
2734  *   this function should be called again
2735  * - AVERROR_EOF -- this function should not be called again
2736  */
2737 static int process_input(void)
2738 {
2739     InputFile *ifile;
2740     AVFormatContext *is;
2741     InputStream *ist;
2742     AVPacket pkt;
2743     int ret, i, j;
2744     int file_index;
2745
2746     /* select the stream that we must read now */
2747     file_index = select_input_file();
2748     /* if none, if is finished */
2749     if (file_index == -2) {
2750         poll_filters() ;
2751         return AVERROR(EAGAIN);
2752     }
2753     if (file_index < 0) {
2754         if (got_eagain()) {
2755             reset_eagain();
2756             av_usleep(10000);
2757             return AVERROR(EAGAIN);
2758         }
2759         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
2760         return AVERROR_EOF;
2761     }
2762     ifile = input_files[file_index];
2763
2764     is  = ifile->ctx;
2765     ret = get_input_packet(ifile, &pkt);
2766
2767     if (ret == AVERROR(EAGAIN)) {
2768         ifile->eagain = 1;
2769         return ret;
2770     }
2771     if (ret < 0) {
2772         if (ret != AVERROR_EOF) {
2773             print_error(is->filename, ret);
2774             if (exit_on_error)
2775                 exit_program(1);
2776         }
2777         ifile->eof_reached = 1;
2778
2779         for (i = 0; i < ifile->nb_streams; i++) {
2780             ist = input_streams[ifile->ist_index + i];
2781             if (ist->decoding_needed)
2782                 output_packet(ist, NULL);
2783             poll_filters();
2784         }
2785
2786         if (opt_shortest)
2787             return AVERROR_EOF;
2788         else
2789             return AVERROR(EAGAIN);
2790     }
2791
2792     reset_eagain();
2793
2794     if (do_pkt_dump) {
2795         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2796                          is->streams[pkt.stream_index]);
2797     }
2798     /* the following test is needed in case new streams appear
2799        dynamically in stream : we ignore them */
2800     if (pkt.stream_index >= ifile->nb_streams) {
2801         report_new_stream(file_index, &pkt);
2802         goto discard_packet;
2803     }
2804
2805     ist = input_streams[ifile->ist_index + pkt.stream_index];
2806     if (ist->discard)
2807         goto discard_packet;
2808
2809     if(!ist->wrap_correction_done && input_files[file_index]->ctx->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
2810         uint64_t stime = av_rescale_q(input_files[file_index]->ctx->start_time, AV_TIME_BASE_Q, ist->st->time_base);
2811         uint64_t stime2= stime + (1LL<<ist->st->pts_wrap_bits);
2812         ist->wrap_correction_done = 1;
2813         if(pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime && pkt.dts - stime > stime2 - pkt.dts) {
2814             pkt.dts -= 1LL<<ist->st->pts_wrap_bits;
2815             ist->wrap_correction_done = 0;
2816         }
2817         if(pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime && pkt.pts - stime > stime2 - pkt.pts) {
2818             pkt.pts -= 1LL<<ist->st->pts_wrap_bits;
2819             ist->wrap_correction_done = 0;
2820         }
2821     }
2822
2823     if (pkt.dts != AV_NOPTS_VALUE)
2824         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2825     if (pkt.pts != AV_NOPTS_VALUE)
2826         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2827
2828     if (pkt.pts != AV_NOPTS_VALUE)
2829         pkt.pts *= ist->ts_scale;
2830     if (pkt.dts != AV_NOPTS_VALUE)
2831         pkt.dts *= ist->ts_scale;
2832
2833     if (debug_ts) {
2834         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
2835                 "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:%"PRId64"\n",
2836                 ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2837                 av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
2838                 av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
2839                 av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2840                 av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2841                 input_files[ist->file_index]->ts_offset);
2842     }
2843
2844     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2845         !copy_ts) {
2846         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2847         int64_t delta   = pkt_dts - ist->next_dts;
2848         if (is->iformat->flags & AVFMT_TS_DISCONT) {
2849         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2850             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2851                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2852             pkt_dts+1<ist->pts){
2853             ifile->ts_offset -= delta;
2854             av_log(NULL, AV_LOG_DEBUG,
2855                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2856                    delta, ifile->ts_offset);
2857             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2858             if (pkt.pts != AV_NOPTS_VALUE)
2859                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2860         }
2861         } else {
2862             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2863                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2864                ) {
2865                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
2866                 pkt.dts = AV_NOPTS_VALUE;
2867             }
2868             if (pkt.pts != AV_NOPTS_VALUE){
2869                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
2870                 delta   = pkt_pts - ist->next_dts;
2871                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2872                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2873                    ) {
2874                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
2875                     pkt.pts = AV_NOPTS_VALUE;
2876                 }
2877             }
2878         }
2879     }
2880
2881     sub2video_heartbeat(ist, pkt.pts);
2882
2883     if ((ret = output_packet(ist, &pkt)) < 0 ||
2884         ((ret = poll_filters()) < 0 && ret != AVERROR_EOF)) {
2885         char buf[128];
2886         av_strerror(ret, buf, sizeof(buf));
2887         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
2888                 ist->file_index, ist->st->index, buf);
2889         if (exit_on_error)
2890             exit_program(1);
2891         av_free_packet(&pkt);
2892         return AVERROR(EAGAIN);
2893     }
2894
2895 discard_packet:
2896     av_free_packet(&pkt);
2897
2898     return 0;
2899 }
2900
2901 /*
2902  * The following code is the main loop of the file converter
2903  */
2904 static int transcode(void)
2905 {
2906     int ret, i;
2907     AVFormatContext *os;
2908     OutputStream *ost;
2909     InputStream *ist;
2910     int64_t timer_start;
2911
2912     ret = transcode_init();
2913     if (ret < 0)
2914         goto fail;
2915
2916     if (stdin_interaction) {
2917         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
2918     }
2919
2920     timer_start = av_gettime();
2921
2922 #if HAVE_PTHREADS
2923     if ((ret = init_input_threads()) < 0)
2924         goto fail;
2925 #endif
2926
2927     while (!received_sigterm) {
2928         int64_t cur_time= av_gettime();
2929
2930         /* if 'q' pressed, exits */
2931         if (stdin_interaction)
2932             if (check_keyboard_interaction(cur_time) < 0)
2933                 break;
2934
2935         /* check if there's any stream where output is still needed */
2936         if (!need_output()) {
2937             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
2938             break;
2939         }
2940
2941         ret = process_input();
2942         if (ret < 0) {
2943             if (ret == AVERROR(EAGAIN))
2944                 continue;
2945             if (ret == AVERROR_EOF)
2946                 break;
2947             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
2948             break;
2949         }
2950
2951         /* dump report by using the output first video and audio streams */
2952         print_report(0, timer_start, cur_time);
2953     }
2954 #if HAVE_PTHREADS
2955     free_input_threads();
2956 #endif
2957
2958     /* at the end of stream, we must flush the decoder buffers */
2959     for (i = 0; i < nb_input_streams; i++) {
2960         ist = input_streams[i];
2961         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
2962             output_packet(ist, NULL);
2963         }
2964     }
2965     poll_filters();
2966     flush_encoders();
2967
2968     term_exit();
2969
2970     /* write the trailer if needed and close file */
2971     for (i = 0; i < nb_output_files; i++) {
2972         os = output_files[i]->ctx;
2973         av_write_trailer(os);
2974     }
2975
2976     /* dump report by using the first video and audio streams */
2977     print_report(1, timer_start, av_gettime());
2978
2979     /* close each encoder */
2980     for (i = 0; i < nb_output_streams; i++) {
2981         ost = output_streams[i];
2982         if (ost->encoding_needed) {
2983             av_freep(&ost->st->codec->stats_in);
2984             avcodec_close(ost->st->codec);
2985         }
2986     }
2987
2988     /* close each decoder */
2989     for (i = 0; i < nb_input_streams; i++) {
2990         ist = input_streams[i];
2991         if (ist->decoding_needed) {
2992             avcodec_close(ist->st->codec);
2993         }
2994     }
2995
2996     /* finished ! */
2997     ret = 0;
2998
2999  fail:
3000 #if HAVE_PTHREADS
3001     free_input_threads();
3002 #endif
3003
3004     if (output_streams) {
3005         for (i = 0; i < nb_output_streams; i++) {
3006             ost = output_streams[i];
3007             if (ost) {
3008                 if (ost->stream_copy)
3009                     av_freep(&ost->st->codec->extradata);
3010                 if (ost->logfile) {
3011                     fclose(ost->logfile);
3012                     ost->logfile = NULL;
3013                 }
3014                 av_freep(&ost->st->codec->subtitle_header);
3015                 av_free(ost->forced_kf_pts);
3016                 av_dict_free(&ost->opts);
3017             }
3018         }
3019     }
3020     return ret;
3021 }
3022
3023
3024 static int64_t getutime(void)
3025 {
3026 #if HAVE_GETRUSAGE
3027     struct rusage rusage;
3028
3029     getrusage(RUSAGE_SELF, &rusage);
3030     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3031 #elif HAVE_GETPROCESSTIMES
3032     HANDLE proc;
3033     FILETIME c, e, k, u;
3034     proc = GetCurrentProcess();
3035     GetProcessTimes(proc, &c, &e, &k, &u);
3036     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3037 #else
3038     return av_gettime();
3039 #endif
3040 }
3041
3042 static int64_t getmaxrss(void)
3043 {
3044 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3045     struct rusage rusage;
3046     getrusage(RUSAGE_SELF, &rusage);
3047     return (int64_t)rusage.ru_maxrss * 1024;
3048 #elif HAVE_GETPROCESSMEMORYINFO
3049     HANDLE proc;
3050     PROCESS_MEMORY_COUNTERS memcounters;
3051     proc = GetCurrentProcess();
3052     memcounters.cb = sizeof(memcounters);
3053     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3054     return memcounters.PeakPagefileUsage;
3055 #else
3056     return 0;
3057 #endif
3058 }
3059
3060 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3061 {
3062 }
3063
3064 static void parse_cpuflags(int argc, char **argv, const OptionDef *options)
3065 {
3066     int idx = locate_option(argc, argv, options, "cpuflags");
3067     if (idx && argv[idx + 1])
3068         opt_cpuflags("cpuflags", argv[idx + 1]);
3069 }
3070
3071 int main(int argc, char **argv)
3072 {
3073     OptionsContext o = { 0 };
3074     int64_t ti;
3075
3076     reset_options(&o, 0);
3077
3078     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3079     parse_loglevel(argc, argv, options);
3080
3081     if(argc>1 && !strcmp(argv[1], "-d")){
3082         run_as_daemon=1;
3083         av_log_set_callback(log_callback_null);
3084         argc--;
3085         argv++;
3086     }
3087
3088     avcodec_register_all();
3089 #if CONFIG_AVDEVICE
3090     avdevice_register_all();
3091 #endif
3092     avfilter_register_all();
3093     av_register_all();
3094     avformat_network_init();
3095
3096     show_banner(argc, argv, options);
3097
3098     term_init();
3099
3100     parse_cpuflags(argc, argv, options);
3101
3102     /* parse options */
3103     parse_options(&o, argc, argv, options, opt_output_file);
3104
3105     if (nb_output_files <= 0 && nb_input_files == 0) {
3106         show_usage();
3107         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3108         exit_program(1);
3109     }
3110
3111     /* file converter / grab */
3112     if (nb_output_files <= 0) {
3113         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3114         exit_program(1);
3115     }
3116
3117 //     if (nb_input_files == 0) {
3118 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3119 //         exit_program(1);
3120 //     }
3121
3122     current_time = ti = getutime();
3123     if (transcode() < 0)
3124         exit_program(1);
3125     ti = getutime() - ti;
3126     if (do_benchmark) {
3127         int maxrss = getmaxrss() / 1024;
3128         printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss);
3129     }
3130
3131     exit_program(0);
3132     return 0;
3133 }