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