cb019b215fdd897b99921e72f05a0bb2a50ef772
[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 volatile int received_nb_signals = 0;
111 static int64_t video_size = 0;
112 static int64_t audio_size = 0;
113 static int64_t subtitle_size = 0;
114 static int64_t extra_size = 0;
115 static int nb_frames_dup = 0;
116 static int nb_frames_drop = 0;
117
118 static int current_time;
119 AVIOContext *progress_avio = NULL;
120
121 static uint8_t *subtitle_out;
122
123 #if HAVE_PTHREADS
124 /* signal to input threads that they should exit; set by the main thread */
125 static int transcoding_finished;
126 #endif
127
128 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
129
130 InputStream **input_streams = NULL;
131 int        nb_input_streams = 0;
132 InputFile   **input_files   = NULL;
133 int        nb_input_files   = 0;
134
135 OutputStream **output_streams = NULL;
136 int         nb_output_streams = 0;
137 OutputFile   **output_files   = NULL;
138 int         nb_output_files   = 0;
139
140 FilterGraph **filtergraphs;
141 int        nb_filtergraphs;
142
143 #if HAVE_TERMIOS_H
144
145 /* init terminal so that we can grab keys */
146 static struct termios oldtty;
147 static int restore_tty;
148 #endif
149
150
151 /* sub2video hack:
152    Convert subtitles to video with alpha to insert them in filter graphs.
153    This is a temporary solution until libavfilter gets real subtitles support.
154  */
155
156
157
158 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
159                                 AVSubtitleRect *r)
160 {
161     uint32_t *pal, *dst2;
162     uint8_t *src, *src2;
163     int x, y;
164
165     if (r->type != SUBTITLE_BITMAP) {
166         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
167         return;
168     }
169     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
170         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
171         return;
172     }
173
174     dst += r->y * dst_linesize + r->x * 4;
175     src = r->pict.data[0];
176     pal = (uint32_t *)r->pict.data[1];
177     for (y = 0; y < r->h; y++) {
178         dst2 = (uint32_t *)dst;
179         src2 = src;
180         for (x = 0; x < r->w; x++)
181             *(dst2++) = pal[*(src2++)];
182         dst += dst_linesize;
183         src += r->pict.linesize[0];
184     }
185 }
186
187 static void sub2video_push_ref(InputStream *ist, int64_t pts)
188 {
189     AVFilterBufferRef *ref = ist->sub2video.ref;
190     int i;
191
192     ist->sub2video.last_pts = ref->pts = pts;
193     for (i = 0; i < ist->nb_filters; i++)
194         av_buffersrc_add_ref(ist->filters[i]->filter,
195                              avfilter_ref_buffer(ref, ~0),
196                              AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
197                              AV_BUFFERSRC_FLAG_NO_COPY);
198 }
199
200 static void sub2video_update(InputStream *ist, AVSubtitle *sub, int64_t pts)
201 {
202     int w = ist->sub2video.w, h = ist->sub2video.h;
203     AVFilterBufferRef *ref = ist->sub2video.ref;
204     int8_t *dst;
205     int     dst_linesize;
206     int i;
207
208     if (!ref)
209         return;
210     dst          = ref->data    [0];
211     dst_linesize = ref->linesize[0];
212     memset(dst, 0, h * dst_linesize);
213     for (i = 0; i < sub->num_rects; i++)
214         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
215     sub2video_push_ref(ist, pts);
216 }
217
218 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
219 {
220     InputFile *infile = input_files[ist->file_index];
221     int i, j, nb_reqs;
222     int64_t pts2;
223
224     /* When a frame is read from a file, examine all sub2video streams in
225        the same file and send the sub2video frame again. Otherwise, decoded
226        video frames could be accumulating in the filter graph while a filter
227        (possibly overlay) is desperately waiting for a subtitle frame. */
228     for (i = 0; i < infile->nb_streams; i++) {
229         InputStream *ist2 = input_streams[infile->ist_index + i];
230         if (!ist2->sub2video.ref)
231             continue;
232         /* subtitles seem to be usually muxed ahead of other streams;
233            if not, substracting a larger time here is necessary */
234         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
235         /* do not send the heartbeat frame if the subtitle is already ahead */
236         if (pts2 <= ist2->sub2video.last_pts)
237             continue;
238         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
239             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
240         if (nb_reqs)
241             sub2video_push_ref(ist2, pts2);
242     }
243 }
244
245 static void sub2video_flush(InputStream *ist)
246 {
247     int i;
248
249     for (i = 0; i < ist->nb_filters; i++)
250         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
251 }
252
253 /* end of sub2video hack */
254
255 void term_exit(void)
256 {
257     av_log(NULL, AV_LOG_QUIET, "%s", "");
258 #if HAVE_TERMIOS_H
259     if(restore_tty)
260         tcsetattr (0, TCSANOW, &oldtty);
261 #endif
262 }
263
264 static volatile int received_sigterm = 0;
265
266 static void sigterm_handler(int sig)
267 {
268     received_sigterm = sig;
269     received_nb_signals++;
270     term_exit();
271     if(received_nb_signals > 3)
272         exit(123);
273 }
274
275 void term_init(void)
276 {
277 #if HAVE_TERMIOS_H
278     if(!run_as_daemon){
279         struct termios tty;
280         int istty = 1;
281 #if HAVE_ISATTY
282         istty = isatty(0) && isatty(2);
283 #endif
284         if (istty && tcgetattr (0, &tty) == 0) {
285             oldtty = tty;
286             restore_tty = 1;
287             atexit(term_exit);
288
289             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
290                              |INLCR|IGNCR|ICRNL|IXON);
291             tty.c_oflag |= OPOST;
292             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
293             tty.c_cflag &= ~(CSIZE|PARENB);
294             tty.c_cflag |= CS8;
295             tty.c_cc[VMIN] = 1;
296             tty.c_cc[VTIME] = 0;
297
298             tcsetattr (0, TCSANOW, &tty);
299         }
300         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
301     }
302 #endif
303     avformat_network_deinit();
304
305     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
306     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
307 #ifdef SIGXCPU
308     signal(SIGXCPU, sigterm_handler);
309 #endif
310 }
311
312 /* read a key without blocking */
313 static int read_key(void)
314 {
315     unsigned char ch;
316 #if HAVE_TERMIOS_H
317     int n = 1;
318     struct timeval tv;
319     fd_set rfds;
320
321     FD_ZERO(&rfds);
322     FD_SET(0, &rfds);
323     tv.tv_sec = 0;
324     tv.tv_usec = 0;
325     n = select(1, &rfds, NULL, NULL, &tv);
326     if (n > 0) {
327         n = read(0, &ch, 1);
328         if (n == 1)
329             return ch;
330
331         return n;
332     }
333 #elif HAVE_KBHIT
334 #    if HAVE_PEEKNAMEDPIPE
335     static int is_pipe;
336     static HANDLE input_handle;
337     DWORD dw, nchars;
338     if(!input_handle){
339         input_handle = GetStdHandle(STD_INPUT_HANDLE);
340         is_pipe = !GetConsoleMode(input_handle, &dw);
341     }
342
343     if (stdin->_cnt > 0) {
344         read(0, &ch, 1);
345         return ch;
346     }
347     if (is_pipe) {
348         /* When running under a GUI, you will end here. */
349         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
350             return -1;
351         //Read it
352         if(nchars != 0) {
353             read(0, &ch, 1);
354             return ch;
355         }else{
356             return -1;
357         }
358     }
359 #    endif
360     if(kbhit())
361         return(getch());
362 #endif
363     return -1;
364 }
365
366 static int decode_interrupt_cb(void *ctx)
367 {
368     return received_nb_signals > 1;
369 }
370
371 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
372
373 void av_noreturn exit_program(int ret)
374 {
375     int i, j;
376
377     for (i = 0; i < nb_filtergraphs; i++) {
378         avfilter_graph_free(&filtergraphs[i]->graph);
379         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
380             av_freep(&filtergraphs[i]->inputs[j]->name);
381             av_freep(&filtergraphs[i]->inputs[j]);
382         }
383         av_freep(&filtergraphs[i]->inputs);
384         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
385             av_freep(&filtergraphs[i]->outputs[j]->name);
386             av_freep(&filtergraphs[i]->outputs[j]);
387         }
388         av_freep(&filtergraphs[i]->outputs);
389         av_freep(&filtergraphs[i]);
390     }
391     av_freep(&filtergraphs);
392
393     av_freep(&subtitle_out);
394
395     /* close files */
396     for (i = 0; i < nb_output_files; i++) {
397         AVFormatContext *s = output_files[i]->ctx;
398         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
399             avio_close(s->pb);
400         avformat_free_context(s);
401         av_dict_free(&output_files[i]->opts);
402         av_freep(&output_files[i]);
403     }
404     for (i = 0; i < nb_output_streams; i++) {
405         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
406         while (bsfc) {
407             AVBitStreamFilterContext *next = bsfc->next;
408             av_bitstream_filter_close(bsfc);
409             bsfc = next;
410         }
411         output_streams[i]->bitstream_filters = NULL;
412
413         av_freep(&output_streams[i]->forced_keyframes);
414         av_freep(&output_streams[i]->filtered_frame);
415         av_freep(&output_streams[i]->avfilter);
416         av_freep(&output_streams[i]);
417     }
418     for (i = 0; i < nb_input_files; i++) {
419         avformat_close_input(&input_files[i]->ctx);
420         av_freep(&input_files[i]);
421     }
422     for (i = 0; i < nb_input_streams; i++) {
423         av_freep(&input_streams[i]->decoded_frame);
424         av_dict_free(&input_streams[i]->opts);
425         free_buffer_pool(&input_streams[i]->buffer_pool);
426         avfilter_unref_bufferp(&input_streams[i]->sub2video.ref);
427         av_freep(&input_streams[i]->filters);
428         av_freep(&input_streams[i]);
429     }
430
431     if (vstats_file)
432         fclose(vstats_file);
433     av_free(vstats_filename);
434
435     av_freep(&input_streams);
436     av_freep(&input_files);
437     av_freep(&output_streams);
438     av_freep(&output_files);
439
440     uninit_opts();
441
442     avfilter_uninit();
443     avformat_network_deinit();
444
445     if (received_sigterm) {
446         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
447                (int) received_sigterm);
448         exit (255);
449     }
450
451     exit(ret);
452 }
453
454 void assert_avoptions(AVDictionary *m)
455 {
456     AVDictionaryEntry *t;
457     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
458         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
459         exit_program(1);
460     }
461 }
462
463 static void assert_codec_experimental(AVCodecContext *c, int encoder)
464 {
465     const char *codec_string = encoder ? "encoder" : "decoder";
466     AVCodec *codec;
467     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
468         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
469         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
470                 "results.\nAdd '-strict experimental' if you want to use it.\n",
471                 codec_string, c->codec->name);
472         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
473         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
474             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
475                    codec_string, codec->name);
476         exit_program(1);
477     }
478 }
479
480 static void update_benchmark(const char *fmt, ...)
481 {
482     if (do_benchmark_all) {
483         int64_t t = getutime();
484         va_list va;
485         char buf[1024];
486
487         if (fmt) {
488             va_start(va, fmt);
489             vsnprintf(buf, sizeof(buf), fmt, va);
490             va_end(va);
491             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
492         }
493         current_time = t;
494     }
495 }
496
497 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
498 {
499     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
500     AVCodecContext          *avctx = ost->st->codec;
501     int ret;
502
503     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
504         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
505         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
506
507     if (avctx->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
508         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
509         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
510             av_log(s, max - pkt->dts > 2 ? AV_LOG_WARNING : AV_LOG_DEBUG, "Audio timestamp %"PRId64" < %"PRId64" invalid, cliping\n", pkt->dts, max);
511             pkt->pts = pkt->dts = max;
512         }
513     }
514
515     /*
516      * Audio encoders may split the packets --  #frames in != #packets out.
517      * But there is no reordering, so we can limit the number of output packets
518      * by simply dropping them here.
519      * Counting encoded video frames needs to be done separately because of
520      * reordering, see do_video_out()
521      */
522     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
523         if (ost->frame_number >= ost->max_frames) {
524             av_free_packet(pkt);
525             return;
526         }
527         ost->frame_number++;
528     }
529
530     while (bsfc) {
531         AVPacket new_pkt = *pkt;
532         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
533                                            &new_pkt.data, &new_pkt.size,
534                                            pkt->data, pkt->size,
535                                            pkt->flags & AV_PKT_FLAG_KEY);
536         if (a > 0) {
537             av_free_packet(pkt);
538             new_pkt.destruct = av_destruct_packet;
539         } else if (a < 0) {
540             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
541                    bsfc->filter->name, pkt->stream_index,
542                    avctx->codec ? avctx->codec->name : "copy");
543             print_error("", a);
544             if (exit_on_error)
545                 exit_program(1);
546         }
547         *pkt = new_pkt;
548
549         bsfc = bsfc->next;
550     }
551
552     pkt->stream_index = ost->index;
553     ret = av_interleaved_write_frame(s, pkt);
554     if (ret < 0) {
555         print_error("av_interleaved_write_frame()", ret);
556         exit_program(1);
557     }
558 }
559
560 static int check_recording_time(OutputStream *ost)
561 {
562     OutputFile *of = output_files[ost->file_index];
563
564     if (of->recording_time != INT64_MAX &&
565         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
566                       AV_TIME_BASE_Q) >= 0) {
567         ost->is_past_recording_time = 1;
568         return 0;
569     }
570     return 1;
571 }
572
573 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
574                          AVFrame *frame)
575 {
576     AVCodecContext *enc = ost->st->codec;
577     AVPacket pkt;
578     int got_packet = 0;
579
580     av_init_packet(&pkt);
581     pkt.data = NULL;
582     pkt.size = 0;
583
584     if (!check_recording_time(ost))
585         return;
586
587     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
588         frame->pts = ost->sync_opts;
589     ost->sync_opts = frame->pts + frame->nb_samples;
590
591     av_assert0(pkt.size || !pkt.data);
592     update_benchmark(NULL);
593     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
594         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
595         exit_program(1);
596     }
597     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
598
599     if (got_packet) {
600         if (pkt.pts != AV_NOPTS_VALUE)
601             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
602         if (pkt.dts != AV_NOPTS_VALUE)
603             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
604         if (pkt.duration > 0)
605             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
606
607         if (debug_ts) {
608             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
609                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
610                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
611                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
612         }
613
614         write_frame(s, &pkt, ost);
615
616         audio_size += pkt.size;
617         av_free_packet(&pkt);
618     }
619 }
620
621 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
622 {
623     AVCodecContext *dec;
624     AVPicture *picture2;
625     AVPicture picture_tmp;
626     uint8_t *buf = 0;
627
628     dec = ist->st->codec;
629
630     /* deinterlace : must be done before any resize */
631     if (do_deinterlace) {
632         int size;
633
634         /* create temporary picture */
635         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
636         buf  = av_malloc(size);
637         if (!buf)
638             return;
639
640         picture2 = &picture_tmp;
641         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
642
643         if (avpicture_deinterlace(picture2, picture,
644                                  dec->pix_fmt, dec->width, dec->height) < 0) {
645             /* if error, do not deinterlace */
646             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
647             av_free(buf);
648             buf = NULL;
649             picture2 = picture;
650         }
651     } else {
652         picture2 = picture;
653     }
654
655     if (picture != picture2)
656         *picture = *picture2;
657     *bufp = buf;
658 }
659
660 static void do_subtitle_out(AVFormatContext *s,
661                             OutputStream *ost,
662                             InputStream *ist,
663                             AVSubtitle *sub,
664                             int64_t pts)
665 {
666     int subtitle_out_max_size = 1024 * 1024;
667     int subtitle_out_size, nb, i;
668     AVCodecContext *enc;
669     AVPacket pkt;
670
671     if (pts == AV_NOPTS_VALUE) {
672         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
673         if (exit_on_error)
674             exit_program(1);
675         return;
676     }
677
678     enc = ost->st->codec;
679
680     if (!subtitle_out) {
681         subtitle_out = av_malloc(subtitle_out_max_size);
682     }
683
684     /* Note: DVB subtitle need one packet to draw them and one other
685        packet to clear them */
686     /* XXX: signal it in the codec context ? */
687     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
688         nb = 2;
689     else
690         nb = 1;
691
692     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
693     pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q)
694         - output_files[ost->file_index]->start_time;
695     for (i = 0; i < nb; i++) {
696         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
697         if (!check_recording_time(ost))
698             return;
699
700         sub->pts = pts;
701         // start_display_time is required to be 0
702         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
703         sub->end_display_time  -= sub->start_display_time;
704         sub->start_display_time = 0;
705         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
706                                                     subtitle_out_max_size, sub);
707         if (subtitle_out_size < 0) {
708             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
709             exit_program(1);
710         }
711
712         av_init_packet(&pkt);
713         pkt.data = subtitle_out;
714         pkt.size = subtitle_out_size;
715         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
716         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
717         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
718             /* XXX: the pts correction is handled here. Maybe handling
719                it in the codec would be better */
720             if (i == 0)
721                 pkt.pts += 90 * sub->start_display_time;
722             else
723                 pkt.pts += 90 * sub->end_display_time;
724         }
725         write_frame(s, &pkt, ost);
726         subtitle_size += pkt.size;
727     }
728 }
729
730 static void do_video_out(AVFormatContext *s,
731                          OutputStream *ost,
732                          AVFrame *in_picture,
733                          float quality)
734 {
735     int ret, format_video_sync;
736     AVPacket pkt;
737     AVCodecContext *enc = ost->st->codec;
738     int nb_frames, i;
739     double sync_ipts, delta;
740     double duration = 0;
741     int frame_size = 0;
742     InputStream *ist = NULL;
743
744     if (ost->source_index >= 0)
745         ist = input_streams[ost->source_index];
746
747     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
748         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
749
750     sync_ipts = in_picture->pts;
751     delta = sync_ipts - ost->sync_opts + duration;
752
753     /* by default, we output a single frame */
754     nb_frames = 1;
755
756     format_video_sync = video_sync_method;
757     if (format_video_sync == VSYNC_AUTO)
758         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
759
760     switch (format_video_sync) {
761     case VSYNC_CFR:
762         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
763         if (delta < -1.1)
764             nb_frames = 0;
765         else if (delta > 1.1)
766             nb_frames = lrintf(delta);
767         break;
768     case VSYNC_VFR:
769         if (delta <= -0.6)
770             nb_frames = 0;
771         else if (delta > 0.6)
772             ost->sync_opts = lrint(sync_ipts);
773         break;
774     case VSYNC_DROP:
775     case VSYNC_PASSTHROUGH:
776         ost->sync_opts = lrint(sync_ipts);
777         break;
778     default:
779         av_assert0(0);
780     }
781
782     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
783     if (nb_frames == 0) {
784         nb_frames_drop++;
785         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
786         return;
787     } else if (nb_frames > 1) {
788         if (nb_frames > dts_error_threshold * 30) {
789             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skiping\n", nb_frames - 1);
790             nb_frames_drop++;
791             return;
792         }
793         nb_frames_dup += nb_frames - 1;
794         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
795     }
796
797   /* duplicates frame if needed */
798   for (i = 0; i < nb_frames; i++) {
799     av_init_packet(&pkt);
800     pkt.data = NULL;
801     pkt.size = 0;
802
803     in_picture->pts = ost->sync_opts;
804
805     if (!check_recording_time(ost))
806         return;
807
808     if (s->oformat->flags & AVFMT_RAWPICTURE &&
809         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
810         /* raw pictures are written as AVPicture structure to
811            avoid any copies. We support temporarily the older
812            method. */
813         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
814         enc->coded_frame->top_field_first  = in_picture->top_field_first;
815         pkt.data   = (uint8_t *)in_picture;
816         pkt.size   =  sizeof(AVPicture);
817         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
818         pkt.flags |= AV_PKT_FLAG_KEY;
819
820         write_frame(s, &pkt, ost);
821         video_size += pkt.size;
822     } else {
823         int got_packet;
824         AVFrame big_picture;
825
826         big_picture = *in_picture;
827         /* better than nothing: use input picture interlaced
828            settings */
829         big_picture.interlaced_frame = in_picture->interlaced_frame;
830         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
831             if (ost->top_field_first == -1)
832                 big_picture.top_field_first = in_picture->top_field_first;
833             else
834                 big_picture.top_field_first = !!ost->top_field_first;
835         }
836
837         /* handles same_quant here. This is not correct because it may
838            not be a global option */
839         big_picture.quality = quality;
840         if (!enc->me_threshold)
841             big_picture.pict_type = 0;
842         if (ost->forced_kf_index < ost->forced_kf_count &&
843             big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
844             big_picture.pict_type = AV_PICTURE_TYPE_I;
845             ost->forced_kf_index++;
846         }
847         update_benchmark(NULL);
848         ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
849         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
850         if (ret < 0) {
851             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
852             exit_program(1);
853         }
854
855         if (got_packet) {
856             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
857                 pkt.pts = ost->sync_opts;
858
859             if (pkt.pts != AV_NOPTS_VALUE)
860                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
861             if (pkt.dts != AV_NOPTS_VALUE)
862                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
863
864             if (debug_ts) {
865                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
866                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
867                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
868                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
869             }
870
871             write_frame(s, &pkt, ost);
872             frame_size = pkt.size;
873             video_size += pkt.size;
874             av_free_packet(&pkt);
875
876             /* if two pass, output log */
877             if (ost->logfile && enc->stats_out) {
878                 fprintf(ost->logfile, "%s", enc->stats_out);
879             }
880         }
881     }
882     ost->sync_opts++;
883     /*
884      * For video, number of frames in == number of packets out.
885      * But there may be reordering, so we can't throw away frames on encoder
886      * flush, we need to limit them here, before they go into encoder.
887      */
888     ost->frame_number++;
889   }
890
891     if (vstats_filename && frame_size)
892         do_video_stats(output_files[ost->file_index]->ctx, ost, frame_size);
893 }
894
895 static double psnr(double d)
896 {
897     return -10.0 * log(d) / log(10.0);
898 }
899
900 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
901                            int frame_size)
902 {
903     AVCodecContext *enc;
904     int frame_number;
905     double ti1, bitrate, avg_bitrate;
906
907     /* this is executed just the first time do_video_stats is called */
908     if (!vstats_file) {
909         vstats_file = fopen(vstats_filename, "w");
910         if (!vstats_file) {
911             perror("fopen");
912             exit_program(1);
913         }
914     }
915
916     enc = ost->st->codec;
917     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
918         frame_number = ost->frame_number;
919         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
920         if (enc->flags&CODEC_FLAG_PSNR)
921             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
922
923         fprintf(vstats_file,"f_size= %6d ", frame_size);
924         /* compute pts value */
925         ti1 = ost->sync_opts * av_q2d(enc->time_base);
926         if (ti1 < 0.01)
927             ti1 = 0.01;
928
929         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
930         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
931         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
932                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
933         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
934     }
935 }
936
937 /* check for new output on any of the filtergraphs */
938 static int poll_filters(void)
939 {
940     AVFilterBufferRef *picref;
941     AVFrame *filtered_frame = NULL;
942     int i, ret, ret_all;
943     unsigned nb_success = 1, av_uninit(nb_eof);
944     int64_t frame_pts;
945
946     while (1) {
947         /* Reap all buffers present in the buffer sinks */
948         for (i = 0; i < nb_output_streams; i++) {
949             OutputStream *ost = output_streams[i];
950             OutputFile    *of = output_files[ost->file_index];
951             int ret = 0;
952
953             if (!ost->filter)
954                 continue;
955
956             if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
957                 return AVERROR(ENOMEM);
958             } else
959                 avcodec_get_frame_defaults(ost->filtered_frame);
960             filtered_frame = ost->filtered_frame;
961
962             while (1) {
963                 ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
964                                                    AV_BUFFERSINK_FLAG_NO_REQUEST);
965                 if (ret < 0) {
966                     if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
967                         char buf[256];
968                         av_strerror(ret, buf, sizeof(buf));
969                         av_log(NULL, AV_LOG_WARNING,
970                                "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
971                     }
972                     break;
973                 }
974                 frame_pts = AV_NOPTS_VALUE;
975                 if (picref->pts != AV_NOPTS_VALUE) {
976                     filtered_frame->pts = frame_pts = av_rescale_q(picref->pts,
977                                                     ost->filter->filter->inputs[0]->time_base,
978                                                     ost->st->codec->time_base) -
979                                         av_rescale_q(of->start_time,
980                                                     AV_TIME_BASE_Q,
981                                                     ost->st->codec->time_base);
982
983                     if (of->start_time && filtered_frame->pts < 0) {
984                         avfilter_unref_buffer(picref);
985                         continue;
986                     }
987                 }
988                 //if (ost->source_index >= 0)
989                 //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
990
991
992                 switch (ost->filter->filter->inputs[0]->type) {
993                 case AVMEDIA_TYPE_VIDEO:
994                     avfilter_copy_buf_props(filtered_frame, picref);
995                     filtered_frame->pts = frame_pts;
996                     if (!ost->frame_aspect_ratio)
997                         ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
998
999                     do_video_out(of->ctx, ost, filtered_frame,
1000                                  same_quant ? ost->last_quality :
1001                                               ost->st->codec->global_quality);
1002                     break;
1003                 case AVMEDIA_TYPE_AUDIO:
1004                     avfilter_copy_buf_props(filtered_frame, picref);
1005                     filtered_frame->pts = frame_pts;
1006                     do_audio_out(of->ctx, ost, filtered_frame);
1007                     break;
1008                 default:
1009                     // TODO support subtitle filters
1010                     av_assert0(0);
1011                 }
1012
1013                 avfilter_unref_buffer(picref);
1014             }
1015         }
1016         if (!nb_success) /* from last round */
1017             break;
1018         /* Request frames through all the graphs */
1019         ret_all = nb_success = nb_eof = 0;
1020         for (i = 0; i < nb_filtergraphs; i++) {
1021             ret = avfilter_graph_request_oldest(filtergraphs[i]->graph);
1022             if (!ret) {
1023                 nb_success++;
1024             } else if (ret == AVERROR_EOF) {
1025                 nb_eof++;
1026             } else if (ret != AVERROR(EAGAIN)) {
1027                 char buf[256];
1028                 av_strerror(ret, buf, sizeof(buf));
1029                 av_log(NULL, AV_LOG_WARNING,
1030                        "Error in request_frame(): %s\n", buf);
1031                 ret_all = ret;
1032             }
1033         }
1034         /* Try again if anything succeeded */
1035     }
1036     return nb_eof == nb_filtergraphs ? AVERROR_EOF : ret_all;
1037 }
1038
1039 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1040 {
1041     char buf[1024];
1042     AVBPrint buf_script;
1043     OutputStream *ost;
1044     AVFormatContext *oc;
1045     int64_t total_size;
1046     AVCodecContext *enc;
1047     int frame_number, vid, i;
1048     double bitrate;
1049     int64_t pts = INT64_MAX;
1050     static int64_t last_time = -1;
1051     static int qp_histogram[52];
1052     int hours, mins, secs, us;
1053
1054     if (!print_stats && !is_last_report && !progress_avio)
1055         return;
1056
1057     if (!is_last_report) {
1058         if (last_time == -1) {
1059             last_time = cur_time;
1060             return;
1061         }
1062         if ((cur_time - last_time) < 500000)
1063             return;
1064         last_time = cur_time;
1065     }
1066
1067
1068     oc = output_files[0]->ctx;
1069
1070     total_size = avio_size(oc->pb);
1071     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
1072         total_size = avio_tell(oc->pb);
1073         if (total_size < 0)
1074             total_size = 0;
1075     }
1076
1077     buf[0] = '\0';
1078     vid = 0;
1079     av_bprint_init(&buf_script, 0, 1);
1080     for (i = 0; i < nb_output_streams; i++) {
1081         float q = -1;
1082         ost = output_streams[i];
1083         enc = ost->st->codec;
1084         if (!ost->stream_copy && enc->coded_frame)
1085             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1086         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1087             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1088             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1089                        ost->file_index, ost->index, q);
1090         }
1091         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1092             float fps, t = (cur_time-timer_start) / 1000000.0;
1093
1094             frame_number = ost->frame_number;
1095             fps = t > 1 ? frame_number / t : 0;
1096             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1097                      frame_number, fps < 9.95, fps, q);
1098             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1099             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1100             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1101                        ost->file_index, ost->index, q);
1102             if (is_last_report)
1103                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1104             if (qp_hist) {
1105                 int j;
1106                 int qp = lrintf(q);
1107                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1108                     qp_histogram[qp]++;
1109                 for (j = 0; j < 32; j++)
1110                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log(qp_histogram[j] + 1) / log(2)));
1111             }
1112             if (enc->flags&CODEC_FLAG_PSNR) {
1113                 int j;
1114                 double error, error_sum = 0;
1115                 double scale, scale_sum = 0;
1116                 double p;
1117                 char type[3] = { 'Y','U','V' };
1118                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1119                 for (j = 0; j < 3; j++) {
1120                     if (is_last_report) {
1121                         error = enc->error[j];
1122                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1123                     } else {
1124                         error = enc->coded_frame->error[j];
1125                         scale = enc->width * enc->height * 255.0 * 255.0;
1126                     }
1127                     if (j)
1128                         scale /= 4;
1129                     error_sum += error;
1130                     scale_sum += scale;
1131                     p = psnr(error / scale);
1132                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1133                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1134                                ost->file_index, ost->index, type[i] | 32, p);
1135                 }
1136                 p = psnr(error_sum / scale_sum);
1137                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1138                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1139                            ost->file_index, ost->index, p);
1140             }
1141             vid = 1;
1142         }
1143         /* compute min output value */
1144         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
1145                                       ost->st->time_base, AV_TIME_BASE_Q));
1146     }
1147
1148     secs = pts / AV_TIME_BASE;
1149     us = pts % AV_TIME_BASE;
1150     mins = secs / 60;
1151     secs %= 60;
1152     hours = mins / 60;
1153     mins %= 60;
1154
1155     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1156
1157     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1158              "size=%8.0fkB time=", total_size / 1024.0);
1159     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1160              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1161              (100 * us) / AV_TIME_BASE);
1162     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1163              "bitrate=%6.1fkbits/s", bitrate);
1164     av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1165     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1166     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1167                hours, mins, secs, us);
1168
1169     if (nb_frames_dup || nb_frames_drop)
1170         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1171                 nb_frames_dup, nb_frames_drop);
1172     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1173     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1174
1175     if (print_stats || is_last_report) {
1176     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1177
1178     fflush(stderr);
1179     }
1180
1181     if (progress_avio) {
1182         av_bprintf(&buf_script, "progress=%s\n",
1183                    is_last_report ? "end" : "continue");
1184         avio_write(progress_avio, buf_script.str,
1185                    FFMIN(buf_script.len, buf_script.size - 1));
1186         avio_flush(progress_avio);
1187         av_bprint_finalize(&buf_script, NULL);
1188         if (is_last_report) {
1189             avio_close(progress_avio);
1190             progress_avio = NULL;
1191         }
1192     }
1193
1194     if (is_last_report) {
1195         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1196         av_log(NULL, AV_LOG_INFO, "\n");
1197         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1198                video_size / 1024.0,
1199                audio_size / 1024.0,
1200                subtitle_size / 1024.0,
1201                extra_size / 1024.0,
1202                100.0 * (total_size - raw) / raw
1203         );
1204         if(video_size + audio_size + subtitle_size + extra_size == 0){
1205             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1206         }
1207     }
1208 }
1209
1210 static void flush_encoders(void)
1211 {
1212     int i, ret;
1213
1214     for (i = 0; i < nb_output_streams; i++) {
1215         OutputStream   *ost = output_streams[i];
1216         AVCodecContext *enc = ost->st->codec;
1217         AVFormatContext *os = output_files[ost->file_index]->ctx;
1218         int stop_encoding = 0;
1219
1220         if (!ost->encoding_needed)
1221             continue;
1222
1223         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1224             continue;
1225         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1226             continue;
1227
1228         for (;;) {
1229             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1230             const char *desc;
1231             int64_t *size;
1232
1233             switch (ost->st->codec->codec_type) {
1234             case AVMEDIA_TYPE_AUDIO:
1235                 encode = avcodec_encode_audio2;
1236                 desc   = "Audio";
1237                 size   = &audio_size;
1238                 break;
1239             case AVMEDIA_TYPE_VIDEO:
1240                 encode = avcodec_encode_video2;
1241                 desc   = "Video";
1242                 size   = &video_size;
1243                 break;
1244             default:
1245                 stop_encoding = 1;
1246             }
1247
1248             if (encode) {
1249                 AVPacket pkt;
1250                 int got_packet;
1251                 av_init_packet(&pkt);
1252                 pkt.data = NULL;
1253                 pkt.size = 0;
1254
1255                 update_benchmark(NULL);
1256                 ret = encode(enc, &pkt, NULL, &got_packet);
1257                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1258                 if (ret < 0) {
1259                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1260                     exit_program(1);
1261                 }
1262                 *size += pkt.size;
1263                 if (ost->logfile && enc->stats_out) {
1264                     fprintf(ost->logfile, "%s", enc->stats_out);
1265                 }
1266                 if (!got_packet) {
1267                     stop_encoding = 1;
1268                     break;
1269                 }
1270                 if (pkt.pts != AV_NOPTS_VALUE)
1271                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1272                 if (pkt.dts != AV_NOPTS_VALUE)
1273                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1274                 write_frame(os, &pkt, ost);
1275             }
1276
1277             if (stop_encoding)
1278                 break;
1279         }
1280     }
1281 }
1282
1283 /*
1284  * Check whether a packet from ist should be written into ost at this time
1285  */
1286 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1287 {
1288     OutputFile *of = output_files[ost->file_index];
1289     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1290
1291     if (ost->source_index != ist_index)
1292         return 0;
1293
1294     if (of->start_time && ist->pts < of->start_time)
1295         return 0;
1296
1297     return 1;
1298 }
1299
1300 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1301 {
1302     OutputFile *of = output_files[ost->file_index];
1303     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1304     AVPicture pict;
1305     AVPacket opkt;
1306
1307     av_init_packet(&opkt);
1308
1309     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1310         !ost->copy_initial_nonkeyframes)
1311         return;
1312
1313     if (of->recording_time != INT64_MAX &&
1314         ist->pts >= of->recording_time + of->start_time) {
1315         ost->is_past_recording_time = 1;
1316         return;
1317     }
1318
1319     /* force the input stream PTS */
1320     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1321         audio_size += pkt->size;
1322     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1323         video_size += pkt->size;
1324         ost->sync_opts++;
1325     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1326         subtitle_size += pkt->size;
1327     }
1328
1329     if (pkt->pts != AV_NOPTS_VALUE)
1330         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1331     else
1332         opkt.pts = AV_NOPTS_VALUE;
1333
1334     if (pkt->dts == AV_NOPTS_VALUE)
1335         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1336     else
1337         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1338     opkt.dts -= ost_tb_start_time;
1339
1340     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1341     opkt.flags    = pkt->flags;
1342
1343     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1344     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1345        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1346        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1347        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1348        ) {
1349         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1350             opkt.destruct = av_destruct_packet;
1351     } else {
1352         opkt.data = pkt->data;
1353         opkt.size = pkt->size;
1354     }
1355
1356     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1357         /* store AVPicture in AVPacket, as expected by the output format */
1358         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1359         opkt.data = (uint8_t *)&pict;
1360         opkt.size = sizeof(AVPicture);
1361         opkt.flags |= AV_PKT_FLAG_KEY;
1362     }
1363
1364     write_frame(of->ctx, &opkt, ost);
1365     ost->st->codec->frame_number++;
1366     av_free_packet(&opkt);
1367 }
1368
1369 static void rate_emu_sleep(InputStream *ist)
1370 {
1371     if (input_files[ist->file_index]->rate_emu) {
1372         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
1373         int64_t now = av_gettime() - ist->start;
1374         if (pts > now)
1375             av_usleep(pts - now);
1376     }
1377 }
1378
1379 int guess_input_channel_layout(InputStream *ist)
1380 {
1381     AVCodecContext *dec = ist->st->codec;
1382
1383     if (!dec->channel_layout) {
1384         char layout_name[256];
1385
1386         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1387         if (!dec->channel_layout)
1388             return 0;
1389         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1390                                      dec->channels, dec->channel_layout);
1391         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1392                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1393     }
1394     return 1;
1395 }
1396
1397 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1398 {
1399     AVFrame *decoded_frame;
1400     AVCodecContext *avctx = ist->st->codec;
1401     int i, ret, resample_changed;
1402     AVRational decoded_frame_tb;
1403
1404     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1405         return AVERROR(ENOMEM);
1406     else
1407         avcodec_get_frame_defaults(ist->decoded_frame);
1408     decoded_frame = ist->decoded_frame;
1409
1410     update_benchmark(NULL);
1411     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1412     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1413     if (ret < 0) {
1414         return ret;
1415     }
1416     if (avctx->sample_rate <= 0) {
1417         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1418         return AVERROR_INVALIDDATA;
1419     }
1420
1421     if (!*got_output) {
1422         /* no audio frame */
1423         if (!pkt->size)
1424             for (i = 0; i < ist->nb_filters; i++)
1425                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL,
1426                                      AV_BUFFERSRC_FLAG_NO_COPY);
1427         return ret;
1428     }
1429
1430 #if 1
1431     /* increment next_dts to use for the case where the input stream does not
1432        have timestamps or there are multiple frames in the packet */
1433     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1434                      avctx->sample_rate;
1435     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1436                      avctx->sample_rate;
1437 #endif
1438
1439     rate_emu_sleep(ist);
1440
1441     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1442                        ist->resample_channels       != avctx->channels               ||
1443                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1444                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1445     if (resample_changed) {
1446         char layout1[64], layout2[64];
1447
1448         if (!guess_input_channel_layout(ist)) {
1449             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1450                    "layout for Input Stream #%d.%d\n", ist->file_index,
1451                    ist->st->index);
1452             exit_program(1);
1453         }
1454         decoded_frame->channel_layout = avctx->channel_layout;
1455
1456         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1457                                      ist->resample_channel_layout);
1458         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1459                                      decoded_frame->channel_layout);
1460
1461         av_log(NULL, AV_LOG_INFO,
1462                "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",
1463                ist->file_index, ist->st->index,
1464                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1465                ist->resample_channels, layout1,
1466                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1467                avctx->channels, layout2);
1468
1469         ist->resample_sample_fmt     = decoded_frame->format;
1470         ist->resample_sample_rate    = decoded_frame->sample_rate;
1471         ist->resample_channel_layout = decoded_frame->channel_layout;
1472         ist->resample_channels       = avctx->channels;
1473
1474         for (i = 0; i < nb_filtergraphs; i++)
1475             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1476                 FilterGraph *fg = filtergraphs[i];
1477                 int j;
1478                 if (configure_filtergraph(fg) < 0) {
1479                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1480                     exit_program(1);
1481                 }
1482                 for (j = 0; j < fg->nb_outputs; j++) {
1483                     OutputStream *ost = fg->outputs[j]->ost;
1484                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1485                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1486                         av_buffersink_set_frame_size(ost->filter->filter,
1487                                                      ost->st->codec->frame_size);
1488                 }
1489             }
1490     }
1491
1492     /* if the decoder provides a pts, use it instead of the last packet pts.
1493        the decoder could be delaying output by a packet or more. */
1494     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1495         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1496         decoded_frame_tb   = avctx->time_base;
1497     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1498         decoded_frame->pts = decoded_frame->pkt_pts;
1499         pkt->pts           = AV_NOPTS_VALUE;
1500         decoded_frame_tb   = ist->st->time_base;
1501     } else if (pkt->pts != AV_NOPTS_VALUE) {
1502         decoded_frame->pts = pkt->pts;
1503         pkt->pts           = AV_NOPTS_VALUE;
1504         decoded_frame_tb   = ist->st->time_base;
1505     }else {
1506         decoded_frame->pts = ist->dts;
1507         decoded_frame_tb   = AV_TIME_BASE_Q;
1508     }
1509     if (decoded_frame->pts != AV_NOPTS_VALUE)
1510         decoded_frame->pts = av_rescale_q(decoded_frame->pts,
1511                                           decoded_frame_tb,
1512                                           (AVRational){1, ist->st->codec->sample_rate});
1513     for (i = 0; i < ist->nb_filters; i++)
1514         av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0);
1515
1516     decoded_frame->pts = AV_NOPTS_VALUE;
1517
1518     return ret;
1519 }
1520
1521 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1522 {
1523     AVFrame *decoded_frame;
1524     void *buffer_to_free = NULL;
1525     int i, ret = 0, resample_changed;
1526     int64_t best_effort_timestamp;
1527     AVRational *frame_sample_aspect;
1528     float quality;
1529
1530     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1531         return AVERROR(ENOMEM);
1532     else
1533         avcodec_get_frame_defaults(ist->decoded_frame);
1534     decoded_frame = ist->decoded_frame;
1535     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1536
1537     update_benchmark(NULL);
1538     ret = avcodec_decode_video2(ist->st->codec,
1539                                 decoded_frame, got_output, pkt);
1540     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1541     if (ret < 0)
1542         return ret;
1543
1544     quality = same_quant ? decoded_frame->quality : 0;
1545     if (!*got_output) {
1546         /* no picture yet */
1547         if (!pkt->size)
1548             for (i = 0; i < ist->nb_filters; i++)
1549                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, AV_BUFFERSRC_FLAG_NO_COPY);
1550         return ret;
1551     }
1552
1553     if(ist->top_field_first>=0)
1554         decoded_frame->top_field_first = ist->top_field_first;
1555
1556     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1557     if(best_effort_timestamp != AV_NOPTS_VALUE)
1558         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1559
1560     if (debug_ts) {
1561         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1562                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1563                 ist->st->index, av_ts2str(decoded_frame->pts),
1564                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1565                 best_effort_timestamp,
1566                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1567                 decoded_frame->key_frame, decoded_frame->pict_type);
1568     }
1569
1570     pkt->size = 0;
1571     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1572
1573     rate_emu_sleep(ist);
1574
1575     if (ist->st->sample_aspect_ratio.num)
1576         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1577
1578     resample_changed = ist->resample_width   != decoded_frame->width  ||
1579                        ist->resample_height  != decoded_frame->height ||
1580                        ist->resample_pix_fmt != decoded_frame->format;
1581     if (resample_changed) {
1582         av_log(NULL, AV_LOG_INFO,
1583                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1584                ist->file_index, ist->st->index,
1585                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1586                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1587
1588         ist->resample_width   = decoded_frame->width;
1589         ist->resample_height  = decoded_frame->height;
1590         ist->resample_pix_fmt = decoded_frame->format;
1591
1592         for (i = 0; i < nb_filtergraphs; i++)
1593             if (ist_in_filtergraph(filtergraphs[i], ist) &&
1594                 configure_filtergraph(filtergraphs[i]) < 0) {
1595                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1596                 exit_program(1);
1597             }
1598     }
1599
1600     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1601     for (i = 0; i < ist->nb_filters; i++) {
1602         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
1603                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
1604                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
1605         // XXX what an ugly hack
1606         if (ist->filters[i]->graph->nb_outputs == 1)
1607             ist->filters[i]->graph->outputs[0]->ost->last_quality = quality;
1608
1609         if (!frame_sample_aspect->num)
1610             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1611         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
1612             FrameBuffer      *buf = decoded_frame->opaque;
1613             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1614                                         decoded_frame->data, decoded_frame->linesize,
1615                                         AV_PERM_READ | AV_PERM_PRESERVE,
1616                                         ist->st->codec->width, ist->st->codec->height,
1617                                         ist->st->codec->pix_fmt);
1618
1619             avfilter_copy_frame_props(fb, decoded_frame);
1620             fb->buf->priv           = buf;
1621             fb->buf->free           = filter_release_buffer;
1622
1623             av_assert0(buf->refcount>0);
1624             buf->refcount++;
1625             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
1626                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
1627                                  AV_BUFFERSRC_FLAG_NO_COPY);
1628         } else
1629         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0)<0) {
1630             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
1631             exit_program(1);
1632         }
1633
1634     }
1635
1636     av_free(buffer_to_free);
1637     return ret;
1638 }
1639
1640 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1641 {
1642     AVSubtitle subtitle;
1643     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1644                                           &subtitle, got_output, pkt);
1645     if (ret < 0 || !*got_output) {
1646         if (!pkt->size)
1647             sub2video_flush(ist);
1648         return ret;
1649     }
1650
1651     rate_emu_sleep(ist);
1652
1653     sub2video_update(ist, &subtitle, pkt->pts);
1654
1655     for (i = 0; i < nb_output_streams; i++) {
1656         OutputStream *ost = output_streams[i];
1657
1658         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1659             continue;
1660
1661         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pkt->pts);
1662     }
1663
1664     avsubtitle_free(&subtitle);
1665     return ret;
1666 }
1667
1668 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1669 static int output_packet(InputStream *ist, const AVPacket *pkt)
1670 {
1671     int ret = 0, i;
1672     int got_output;
1673
1674     AVPacket avpkt;
1675     if (!ist->saw_first_ts) {
1676         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;
1677         ist->pts = 0;
1678         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1679             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1680             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1681         }
1682         ist->saw_first_ts = 1;
1683     }
1684
1685     if (ist->next_dts == AV_NOPTS_VALUE)
1686         ist->next_dts = ist->dts;
1687     if (ist->next_pts == AV_NOPTS_VALUE)
1688         ist->next_pts = ist->pts;
1689
1690     if (pkt == NULL) {
1691         /* EOF handling */
1692         av_init_packet(&avpkt);
1693         avpkt.data = NULL;
1694         avpkt.size = 0;
1695         goto handle_eof;
1696     } else {
1697         avpkt = *pkt;
1698     }
1699
1700     if (pkt->dts != AV_NOPTS_VALUE) {
1701         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1702         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1703             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1704     }
1705
1706     // while we have more to decode or while the decoder did output something on EOF
1707     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1708         int duration;
1709     handle_eof:
1710
1711         ist->pts = ist->next_pts;
1712         ist->dts = ist->next_dts;
1713
1714         if (avpkt.size && avpkt.size != pkt->size) {
1715             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1716                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1717             ist->showed_multi_packet_warning = 1;
1718         }
1719
1720         switch (ist->st->codec->codec_type) {
1721         case AVMEDIA_TYPE_AUDIO:
1722             ret = decode_audio    (ist, &avpkt, &got_output);
1723             break;
1724         case AVMEDIA_TYPE_VIDEO:
1725             ret = decode_video    (ist, &avpkt, &got_output);
1726             if (avpkt.duration) {
1727                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1728             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1729                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1730                 duration = ((int64_t)AV_TIME_BASE *
1731                                 ist->st->codec->time_base.num * ticks) /
1732                                 ist->st->codec->time_base.den;
1733             } else
1734                 duration = 0;
1735
1736             if(ist->dts != AV_NOPTS_VALUE && duration) {
1737                 ist->next_dts += duration;
1738             }else
1739                 ist->next_dts = AV_NOPTS_VALUE;
1740
1741             if (got_output)
1742                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1743             break;
1744         case AVMEDIA_TYPE_SUBTITLE:
1745             ret = transcode_subtitles(ist, &avpkt, &got_output);
1746             break;
1747         default:
1748             return -1;
1749         }
1750
1751         if (ret < 0)
1752             return ret;
1753
1754         avpkt.dts=
1755         avpkt.pts= AV_NOPTS_VALUE;
1756
1757         // touch data and size only if not EOF
1758         if (pkt) {
1759             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1760                 ret = avpkt.size;
1761             avpkt.data += ret;
1762             avpkt.size -= ret;
1763         }
1764         if (!got_output) {
1765             continue;
1766         }
1767     }
1768
1769     /* handle stream copy */
1770     if (!ist->decoding_needed) {
1771         rate_emu_sleep(ist);
1772         ist->dts = ist->next_dts;
1773         switch (ist->st->codec->codec_type) {
1774         case AVMEDIA_TYPE_AUDIO:
1775             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1776                              ist->st->codec->sample_rate;
1777             break;
1778         case AVMEDIA_TYPE_VIDEO:
1779             if (pkt->duration) {
1780                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1781             } else if(ist->st->codec->time_base.num != 0) {
1782                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1783                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1784                                   ist->st->codec->time_base.num * ticks) /
1785                                   ist->st->codec->time_base.den;
1786             }
1787             break;
1788         }
1789         ist->pts = ist->dts;
1790         ist->next_pts = ist->next_dts;
1791     }
1792     for (i = 0; pkt && i < nb_output_streams; i++) {
1793         OutputStream *ost = output_streams[i];
1794
1795         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1796             continue;
1797
1798         do_streamcopy(ist, ost, pkt);
1799     }
1800
1801     return 0;
1802 }
1803
1804 static void print_sdp(void)
1805 {
1806     char sdp[2048];
1807     int i;
1808     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1809
1810     if (!avc)
1811         exit_program(1);
1812     for (i = 0; i < nb_output_files; i++)
1813         avc[i] = output_files[i]->ctx;
1814
1815     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1816     printf("SDP:\n%s\n", sdp);
1817     fflush(stdout);
1818     av_freep(&avc);
1819 }
1820
1821 static int init_input_stream(int ist_index, char *error, int error_len)
1822 {
1823     InputStream *ist = input_streams[ist_index];
1824
1825     if (ist->decoding_needed) {
1826         AVCodec *codec = ist->dec;
1827         if (!codec) {
1828             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1829                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1830             return AVERROR(EINVAL);
1831         }
1832
1833         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
1834         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
1835             ist->st->codec->get_buffer     = codec_get_buffer;
1836             ist->st->codec->release_buffer = codec_release_buffer;
1837             ist->st->codec->opaque         = &ist->buffer_pool;
1838         }
1839
1840         if (!av_dict_get(ist->opts, "threads", NULL, 0))
1841             av_dict_set(&ist->opts, "threads", "auto", 0);
1842         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
1843             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1844                     ist->file_index, ist->st->index);
1845             return AVERROR(EINVAL);
1846         }
1847         assert_codec_experimental(ist->st->codec, 0);
1848         assert_avoptions(ist->opts);
1849     }
1850
1851     ist->next_pts = AV_NOPTS_VALUE;
1852     ist->next_dts = AV_NOPTS_VALUE;
1853     ist->is_start = 1;
1854
1855     return 0;
1856 }
1857
1858 static InputStream *get_input_stream(OutputStream *ost)
1859 {
1860     if (ost->source_index >= 0)
1861         return input_streams[ost->source_index];
1862     return NULL;
1863 }
1864
1865 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1866                                     AVCodecContext *avctx)
1867 {
1868     char *p;
1869     int n = 1, i;
1870     int64_t t;
1871
1872     for (p = kf; *p; p++)
1873         if (*p == ',')
1874             n++;
1875     ost->forced_kf_count = n;
1876     ost->forced_kf_pts   = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1877     if (!ost->forced_kf_pts) {
1878         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1879         exit_program(1);
1880     }
1881
1882     p = kf;
1883     for (i = 0; i < n; i++) {
1884         char *next = strchr(p, ',');
1885
1886         if (next)
1887             *next++ = 0;
1888
1889         t = parse_time_or_die("force_key_frames", p, 1);
1890         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1891
1892         p = next;
1893     }
1894 }
1895
1896 static void report_new_stream(int input_index, AVPacket *pkt)
1897 {
1898     InputFile *file = input_files[input_index];
1899     AVStream *st = file->ctx->streams[pkt->stream_index];
1900
1901     if (pkt->stream_index < file->nb_streams_warn)
1902         return;
1903     av_log(file->ctx, AV_LOG_WARNING,
1904            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
1905            av_get_media_type_string(st->codec->codec_type),
1906            input_index, pkt->stream_index,
1907            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
1908     file->nb_streams_warn = pkt->stream_index + 1;
1909 }
1910
1911 static int transcode_init(void)
1912 {
1913     int ret = 0, i, j, k;
1914     AVFormatContext *oc;
1915     AVCodecContext *codec, *icodec = NULL;
1916     OutputStream *ost;
1917     InputStream *ist;
1918     char error[1024];
1919     int want_sdp = 1;
1920
1921     /* init framerate emulation */
1922     for (i = 0; i < nb_input_files; i++) {
1923         InputFile *ifile = input_files[i];
1924         if (ifile->rate_emu)
1925             for (j = 0; j < ifile->nb_streams; j++)
1926                 input_streams[j + ifile->ist_index]->start = av_gettime();
1927     }
1928
1929     /* output stream init */
1930     for (i = 0; i < nb_output_files; i++) {
1931         oc = output_files[i]->ctx;
1932         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
1933             av_dump_format(oc, i, oc->filename, 1);
1934             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
1935             return AVERROR(EINVAL);
1936         }
1937     }
1938
1939     /* init complex filtergraphs */
1940     for (i = 0; i < nb_filtergraphs; i++)
1941         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
1942             return ret;
1943
1944     /* for each output stream, we compute the right encoding parameters */
1945     for (i = 0; i < nb_output_streams; i++) {
1946         ost = output_streams[i];
1947         oc  = output_files[ost->file_index]->ctx;
1948         ist = get_input_stream(ost);
1949
1950         if (ost->attachment_filename)
1951             continue;
1952
1953         codec  = ost->st->codec;
1954
1955         if (ist) {
1956             icodec = ist->st->codec;
1957
1958             ost->st->disposition          = ist->st->disposition;
1959             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
1960             codec->chroma_sample_location = icodec->chroma_sample_location;
1961         }
1962
1963         if (ost->stream_copy) {
1964             uint64_t extra_size;
1965
1966             av_assert0(ist && !ost->filter);
1967
1968             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
1969
1970             if (extra_size > INT_MAX) {
1971                 return AVERROR(EINVAL);
1972             }
1973
1974             /* if stream_copy is selected, no need to decode or encode */
1975             codec->codec_id   = icodec->codec_id;
1976             codec->codec_type = icodec->codec_type;
1977
1978             if (!codec->codec_tag) {
1979                 if (!oc->oformat->codec_tag ||
1980                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
1981                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
1982                     codec->codec_tag = icodec->codec_tag;
1983             }
1984
1985             codec->bit_rate       = icodec->bit_rate;
1986             codec->rc_max_rate    = icodec->rc_max_rate;
1987             codec->rc_buffer_size = icodec->rc_buffer_size;
1988             codec->field_order    = icodec->field_order;
1989             codec->extradata      = av_mallocz(extra_size);
1990             if (!codec->extradata) {
1991                 return AVERROR(ENOMEM);
1992             }
1993             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
1994             codec->extradata_size= icodec->extradata_size;
1995             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
1996
1997             codec->time_base = ist->st->time_base;
1998             /*
1999              * Avi is a special case here because it supports variable fps but
2000              * having the fps and timebase differe significantly adds quite some
2001              * overhead
2002              */
2003             if(!strcmp(oc->oformat->name, "avi")) {
2004                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2005                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2006                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2007                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2008                      || copy_tb==2){
2009                     codec->time_base.num = ist->st->r_frame_rate.den;
2010                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2011                     codec->ticks_per_frame = 2;
2012                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2013                                  && av_q2d(ist->st->time_base) < 1.0/500
2014                     || copy_tb==0){
2015                     codec->time_base = icodec->time_base;
2016                     codec->time_base.num *= icodec->ticks_per_frame;
2017                     codec->time_base.den *= 2;
2018                     codec->ticks_per_frame = 2;
2019                 }
2020             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2021                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2022                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2023             ) {
2024                 if(   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2025                                 && av_q2d(ist->st->time_base) < 1.0/500
2026                    || copy_tb==0){
2027                     codec->time_base = icodec->time_base;
2028                     codec->time_base.num *= icodec->ticks_per_frame;
2029                 }
2030             }
2031
2032             if(ost->frame_rate.num)
2033                 codec->time_base = av_inv_q(ost->frame_rate);
2034
2035             av_reduce(&codec->time_base.num, &codec->time_base.den,
2036                         codec->time_base.num, codec->time_base.den, INT_MAX);
2037
2038             switch (codec->codec_type) {
2039             case AVMEDIA_TYPE_AUDIO:
2040                 if (audio_volume != 256) {
2041                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2042                     exit_program(1);
2043                 }
2044                 codec->channel_layout     = icodec->channel_layout;
2045                 codec->sample_rate        = icodec->sample_rate;
2046                 codec->channels           = icodec->channels;
2047                 codec->frame_size         = icodec->frame_size;
2048                 codec->audio_service_type = icodec->audio_service_type;
2049                 codec->block_align        = icodec->block_align;
2050                 if((codec->block_align == 1 || codec->block_align == 1152) && codec->codec_id == AV_CODEC_ID_MP3)
2051                     codec->block_align= 0;
2052                 if(codec->codec_id == AV_CODEC_ID_AC3)
2053                     codec->block_align= 0;
2054                 break;
2055             case AVMEDIA_TYPE_VIDEO:
2056                 codec->pix_fmt            = icodec->pix_fmt;
2057                 codec->width              = icodec->width;
2058                 codec->height             = icodec->height;
2059                 codec->has_b_frames       = icodec->has_b_frames;
2060                 if (!codec->sample_aspect_ratio.num) {
2061                     codec->sample_aspect_ratio   =
2062                     ost->st->sample_aspect_ratio =
2063                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2064                         ist->st->codec->sample_aspect_ratio.num ?
2065                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2066                 }
2067                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2068                 break;
2069             case AVMEDIA_TYPE_SUBTITLE:
2070                 codec->width  = icodec->width;
2071                 codec->height = icodec->height;
2072                 break;
2073             case AVMEDIA_TYPE_DATA:
2074             case AVMEDIA_TYPE_ATTACHMENT:
2075                 break;
2076             default:
2077                 abort();
2078             }
2079         } else {
2080             if (!ost->enc)
2081                 ost->enc = avcodec_find_encoder(codec->codec_id);
2082             if (!ost->enc) {
2083                 /* should only happen when a default codec is not present. */
2084                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2085                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2086                 ret = AVERROR(EINVAL);
2087                 goto dump_format;
2088             }
2089
2090             if (ist)
2091                 ist->decoding_needed = 1;
2092             ost->encoding_needed = 1;
2093
2094             if (!ost->filter &&
2095                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2096                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2097                     FilterGraph *fg;
2098                     fg = init_simple_filtergraph(ist, ost);
2099                     if (configure_filtergraph(fg)) {
2100                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2101                         exit(1);
2102                     }
2103             }
2104
2105             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2106                 if (ost->filter && !ost->frame_rate.num)
2107                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2108                 if (ist && !ost->frame_rate.num)
2109                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2110 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2111                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2112                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2113                     ost->frame_rate = ost->enc->supported_framerates[idx];
2114                 }
2115             }
2116
2117             switch (codec->codec_type) {
2118             case AVMEDIA_TYPE_AUDIO:
2119                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2120                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2121                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2122                 codec->channels       = av_get_channel_layout_nb_channels(codec->channel_layout);
2123                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2124                 break;
2125             case AVMEDIA_TYPE_VIDEO:
2126                 codec->time_base = av_inv_q(ost->frame_rate);
2127                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2128                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2129                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2130                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2131                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2132                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2133                 }
2134                 for (j = 0; j < ost->forced_kf_count; j++)
2135                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2136                                                          AV_TIME_BASE_Q,
2137                                                          codec->time_base);
2138
2139                 codec->width  = ost->filter->filter->inputs[0]->w;
2140                 codec->height = ost->filter->filter->inputs[0]->h;
2141                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2142                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
2143                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
2144                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2145                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2146
2147                 if (!icodec ||
2148                     codec->width   != icodec->width  ||
2149                     codec->height  != icodec->height ||
2150                     codec->pix_fmt != icodec->pix_fmt) {
2151                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2152                 }
2153
2154                 if (ost->forced_keyframes)
2155                     parse_forced_key_frames(ost->forced_keyframes, ost,
2156                                             ost->st->codec);
2157                 break;
2158             case AVMEDIA_TYPE_SUBTITLE:
2159                 codec->time_base = (AVRational){1, 1000};
2160                 break;
2161             default:
2162                 abort();
2163                 break;
2164             }
2165             /* two pass mode */
2166             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2167                 char logfilename[1024];
2168                 FILE *f;
2169
2170                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2171                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2172                          i);
2173                 if (!strcmp(ost->enc->name, "libx264")) {
2174                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2175                 } else {
2176                     if (codec->flags & CODEC_FLAG_PASS2) {
2177                         char  *logbuffer;
2178                         size_t logbuffer_size;
2179                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2180                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2181                                    logfilename);
2182                             exit_program(1);
2183                         }
2184                         codec->stats_in = logbuffer;
2185                     }
2186                     if (codec->flags & CODEC_FLAG_PASS1) {
2187                         f = fopen(logfilename, "wb");
2188                         if (!f) {
2189                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2190                                 logfilename, strerror(errno));
2191                             exit_program(1);
2192                         }
2193                         ost->logfile = f;
2194                     }
2195                 }
2196             }
2197         }
2198     }
2199
2200     /* open each encoder */
2201     for (i = 0; i < nb_output_streams; i++) {
2202         ost = output_streams[i];
2203         if (ost->encoding_needed) {
2204             AVCodec      *codec = ost->enc;
2205             AVCodecContext *dec = NULL;
2206
2207             if ((ist = get_input_stream(ost)))
2208                 dec = ist->st->codec;
2209             if (dec && dec->subtitle_header) {
2210                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2211                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2212                 if (!ost->st->codec->subtitle_header) {
2213                     ret = AVERROR(ENOMEM);
2214                     goto dump_format;
2215                 }
2216                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2217                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2218             }
2219             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2220                 av_dict_set(&ost->opts, "threads", "auto", 0);
2221             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2222                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2223                         ost->file_index, ost->index);
2224                 ret = AVERROR(EINVAL);
2225                 goto dump_format;
2226             }
2227             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2228                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2229                 av_buffersink_set_frame_size(ost->filter->filter,
2230                                              ost->st->codec->frame_size);
2231             assert_codec_experimental(ost->st->codec, 1);
2232             assert_avoptions(ost->opts);
2233             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2234                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2235                                              " It takes bits/s as argument, not kbits/s\n");
2236             extra_size += ost->st->codec->extradata_size;
2237
2238             if (ost->st->codec->me_threshold)
2239                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
2240         }
2241     }
2242
2243     /* init input streams */
2244     for (i = 0; i < nb_input_streams; i++)
2245         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
2246             goto dump_format;
2247
2248     /* discard unused programs */
2249     for (i = 0; i < nb_input_files; i++) {
2250         InputFile *ifile = input_files[i];
2251         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2252             AVProgram *p = ifile->ctx->programs[j];
2253             int discard  = AVDISCARD_ALL;
2254
2255             for (k = 0; k < p->nb_stream_indexes; k++)
2256                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2257                     discard = AVDISCARD_DEFAULT;
2258                     break;
2259                 }
2260             p->discard = discard;
2261         }
2262     }
2263
2264     /* open files and write file headers */
2265     for (i = 0; i < nb_output_files; i++) {
2266         oc = output_files[i]->ctx;
2267         oc->interrupt_callback = int_cb;
2268         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2269             char errbuf[128];
2270             const char *errbuf_ptr = errbuf;
2271             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
2272                 errbuf_ptr = strerror(AVUNERROR(ret));
2273             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
2274             ret = AVERROR(EINVAL);
2275             goto dump_format;
2276         }
2277 //         assert_avoptions(output_files[i]->opts);
2278         if (strcmp(oc->oformat->name, "rtp")) {
2279             want_sdp = 0;
2280         }
2281     }
2282
2283  dump_format:
2284     /* dump the file output parameters - cannot be done before in case
2285        of stream copy */
2286     for (i = 0; i < nb_output_files; i++) {
2287         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2288     }
2289
2290     /* dump the stream mapping */
2291     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2292     for (i = 0; i < nb_input_streams; i++) {
2293         ist = input_streams[i];
2294
2295         for (j = 0; j < ist->nb_filters; j++) {
2296             if (ist->filters[j]->graph->graph_desc) {
2297                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2298                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2299                        ist->filters[j]->name);
2300                 if (nb_filtergraphs > 1)
2301                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2302                 av_log(NULL, AV_LOG_INFO, "\n");
2303             }
2304         }
2305     }
2306
2307     for (i = 0; i < nb_output_streams; i++) {
2308         ost = output_streams[i];
2309
2310         if (ost->attachment_filename) {
2311             /* an attached file */
2312             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2313                    ost->attachment_filename, ost->file_index, ost->index);
2314             continue;
2315         }
2316
2317         if (ost->filter && ost->filter->graph->graph_desc) {
2318             /* output from a complex graph */
2319             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2320             if (nb_filtergraphs > 1)
2321                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2322
2323             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2324                    ost->index, ost->enc ? ost->enc->name : "?");
2325             continue;
2326         }
2327
2328         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2329                input_streams[ost->source_index]->file_index,
2330                input_streams[ost->source_index]->st->index,
2331                ost->file_index,
2332                ost->index);
2333         if (ost->sync_ist != input_streams[ost->source_index])
2334             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2335                    ost->sync_ist->file_index,
2336                    ost->sync_ist->st->index);
2337         if (ost->stream_copy)
2338             av_log(NULL, AV_LOG_INFO, " (copy)");
2339         else
2340             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2341                    input_streams[ost->source_index]->dec->name : "?",
2342                    ost->enc ? ost->enc->name : "?");
2343         av_log(NULL, AV_LOG_INFO, "\n");
2344     }
2345
2346     if (ret) {
2347         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2348         return ret;
2349     }
2350
2351     if (want_sdp) {
2352         print_sdp();
2353     }
2354
2355     return 0;
2356 }
2357
2358 /**
2359  * @return 1 if there are still streams where more output is wanted,
2360  *         0 otherwise
2361  */
2362 static int need_output(void)
2363 {
2364     int i;
2365
2366     for (i = 0; i < nb_output_streams; i++) {
2367         OutputStream *ost    = output_streams[i];
2368         OutputFile *of       = output_files[ost->file_index];
2369         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2370
2371         if (ost->is_past_recording_time ||
2372             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2373             continue;
2374         if (ost->frame_number >= ost->max_frames) {
2375             int j;
2376             for (j = 0; j < of->ctx->nb_streams; j++)
2377                 output_streams[of->ost_index + j]->is_past_recording_time = 1;
2378             continue;
2379         }
2380
2381         return 1;
2382     }
2383
2384     return 0;
2385 }
2386
2387 static int input_acceptable(InputStream *ist)
2388 {
2389     av_assert1(!ist->discard);
2390     return !input_files[ist->file_index]->unavailable &&
2391            !input_files[ist->file_index]->eof_reached;
2392 }
2393
2394 static int find_graph_input(FilterGraph *graph)
2395 {
2396     int i, nb_req_max = 0, file_index = -1;
2397
2398     for (i = 0; i < graph->nb_inputs; i++) {
2399         int nb_req = av_buffersrc_get_nb_failed_requests(graph->inputs[i]->filter);
2400         if (nb_req > nb_req_max) {
2401             InputStream *ist = graph->inputs[i]->ist;
2402             if (input_acceptable(ist)) {
2403                 nb_req_max = nb_req;
2404                 file_index = ist->file_index;
2405             }
2406         }
2407     }
2408
2409     return file_index;
2410 }
2411
2412 /**
2413  * Select the input file to read from.
2414  *
2415  * @return  >=0 index of the input file to use;
2416  *          -1  if no file is acceptable;
2417  *          -2  to read from filters without reading from a file
2418  */
2419 static int select_input_file(void)
2420 {
2421     int i, ret, nb_active_out = nb_output_streams, ost_index = -1;
2422     int64_t opts_min;
2423     OutputStream *ost;
2424     AVFilterBufferRef *dummy;
2425
2426     for (i = 0; i < nb_output_streams; i++)
2427         nb_active_out -= output_streams[i]->unavailable =
2428             output_streams[i]->is_past_recording_time;
2429     while (nb_active_out) {
2430         opts_min = INT64_MAX;
2431         ost_index = -1;
2432         for (i = 0; i < nb_output_streams; i++) {
2433             OutputStream *ost = output_streams[i];
2434             int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2435                                         AV_TIME_BASE_Q);
2436             if (!ost->unavailable && opts < opts_min) {
2437                 opts_min  = opts;
2438                 ost_index = i;
2439             }
2440         }
2441         if (ost_index < 0)
2442             return -1;
2443
2444         ost = output_streams[ost_index];
2445         if (ost->source_index >= 0) {
2446             /* ost is directly connected to an input */
2447             InputStream *ist = input_streams[ost->source_index];
2448             if (input_acceptable(ist))
2449                 return ist->file_index;
2450         } else {
2451             /* ost is connected to a complex filtergraph */
2452             av_assert1(ost->filter);
2453             ret = av_buffersink_get_buffer_ref(ost->filter->filter, &dummy,
2454                                                AV_BUFFERSINK_FLAG_PEEK);
2455             if (ret >= 0)
2456                 return -2;
2457             ret = find_graph_input(ost->filter->graph);
2458             if (ret >= 0)
2459                 return ret;
2460         }
2461         ost->unavailable = 1;
2462         nb_active_out--;
2463     }
2464     return -1;
2465 }
2466
2467 static int check_keyboard_interaction(int64_t cur_time)
2468 {
2469     int i, ret, key;
2470     static int64_t last_time;
2471     if (received_nb_signals)
2472         return AVERROR_EXIT;
2473     /* read_key() returns 0 on EOF */
2474     if(cur_time - last_time >= 100000 && !run_as_daemon){
2475         key =  read_key();
2476         last_time = cur_time;
2477     }else
2478         key = -1;
2479     if (key == 'q')
2480         return AVERROR_EXIT;
2481     if (key == '+') av_log_set_level(av_log_get_level()+10);
2482     if (key == '-') av_log_set_level(av_log_get_level()-10);
2483     if (key == 's') qp_hist     ^= 1;
2484     if (key == 'h'){
2485         if (do_hex_dump){
2486             do_hex_dump = do_pkt_dump = 0;
2487         } else if(do_pkt_dump){
2488             do_hex_dump = 1;
2489         } else
2490             do_pkt_dump = 1;
2491         av_log_set_level(AV_LOG_DEBUG);
2492     }
2493     if (key == 'c' || key == 'C'){
2494         char buf[4096], target[64], command[256], arg[256] = {0};
2495         double time;
2496         int k, n = 0;
2497         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2498         i = 0;
2499         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2500             if (k > 0)
2501                 buf[i++] = k;
2502         buf[i] = 0;
2503         if (k > 0 &&
2504             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2505             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2506                    target, time, command, arg);
2507             for (i = 0; i < nb_filtergraphs; i++) {
2508                 FilterGraph *fg = filtergraphs[i];
2509                 if (fg->graph) {
2510                     if (time < 0) {
2511                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2512                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2513                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2514                     } else {
2515                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2516                     }
2517                 }
2518             }
2519         } else {
2520             av_log(NULL, AV_LOG_ERROR,
2521                    "Parse error, at least 3 arguments were expected, "
2522                    "only %d given in string '%s'\n", n, buf);
2523         }
2524     }
2525     if (key == 'd' || key == 'D'){
2526         int debug=0;
2527         if(key == 'D') {
2528             debug = input_streams[0]->st->codec->debug<<1;
2529             if(!debug) debug = 1;
2530             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2531                 debug += debug;
2532         }else
2533             if(scanf("%d", &debug)!=1)
2534                 fprintf(stderr,"error parsing debug value\n");
2535         for(i=0;i<nb_input_streams;i++) {
2536             input_streams[i]->st->codec->debug = debug;
2537         }
2538         for(i=0;i<nb_output_streams;i++) {
2539             OutputStream *ost = output_streams[i];
2540             ost->st->codec->debug = debug;
2541         }
2542         if(debug) av_log_set_level(AV_LOG_DEBUG);
2543         fprintf(stderr,"debug=%d\n", debug);
2544     }
2545     if (key == '?'){
2546         fprintf(stderr, "key    function\n"
2547                         "?      show this help\n"
2548                         "+      increase verbosity\n"
2549                         "-      decrease verbosity\n"
2550                         "c      Send command to filtergraph\n"
2551                         "D      cycle through available debug modes\n"
2552                         "h      dump packets/hex press to cycle through the 3 states\n"
2553                         "q      quit\n"
2554                         "s      Show QP histogram\n"
2555         );
2556     }
2557     return 0;
2558 }
2559
2560 #if HAVE_PTHREADS
2561 static void *input_thread(void *arg)
2562 {
2563     InputFile *f = arg;
2564     int ret = 0;
2565
2566     while (!transcoding_finished && ret >= 0) {
2567         AVPacket pkt;
2568         ret = av_read_frame(f->ctx, &pkt);
2569
2570         if (ret == AVERROR(EAGAIN)) {
2571             av_usleep(10000);
2572             ret = 0;
2573             continue;
2574         } else if (ret < 0)
2575             break;
2576
2577         pthread_mutex_lock(&f->fifo_lock);
2578         while (!av_fifo_space(f->fifo))
2579             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2580
2581         av_dup_packet(&pkt);
2582         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2583
2584         pthread_mutex_unlock(&f->fifo_lock);
2585     }
2586
2587     f->finished = 1;
2588     return NULL;
2589 }
2590
2591 static void free_input_threads(void)
2592 {
2593     int i;
2594
2595     if (nb_input_files == 1)
2596         return;
2597
2598     transcoding_finished = 1;
2599
2600     for (i = 0; i < nb_input_files; i++) {
2601         InputFile *f = input_files[i];
2602         AVPacket pkt;
2603
2604         if (!f->fifo || f->joined)
2605             continue;
2606
2607         pthread_mutex_lock(&f->fifo_lock);
2608         while (av_fifo_size(f->fifo)) {
2609             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2610             av_free_packet(&pkt);
2611         }
2612         pthread_cond_signal(&f->fifo_cond);
2613         pthread_mutex_unlock(&f->fifo_lock);
2614
2615         pthread_join(f->thread, NULL);
2616         f->joined = 1;
2617
2618         while (av_fifo_size(f->fifo)) {
2619             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2620             av_free_packet(&pkt);
2621         }
2622         av_fifo_free(f->fifo);
2623     }
2624 }
2625
2626 static int init_input_threads(void)
2627 {
2628     int i, ret;
2629
2630     if (nb_input_files == 1)
2631         return 0;
2632
2633     for (i = 0; i < nb_input_files; i++) {
2634         InputFile *f = input_files[i];
2635
2636         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2637             return AVERROR(ENOMEM);
2638
2639         pthread_mutex_init(&f->fifo_lock, NULL);
2640         pthread_cond_init (&f->fifo_cond, NULL);
2641
2642         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2643             return AVERROR(ret);
2644     }
2645     return 0;
2646 }
2647
2648 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2649 {
2650     int ret = 0;
2651
2652     pthread_mutex_lock(&f->fifo_lock);
2653
2654     if (av_fifo_size(f->fifo)) {
2655         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2656         pthread_cond_signal(&f->fifo_cond);
2657     } else {
2658         if (f->finished)
2659             ret = AVERROR_EOF;
2660         else
2661             ret = AVERROR(EAGAIN);
2662     }
2663
2664     pthread_mutex_unlock(&f->fifo_lock);
2665
2666     return ret;
2667 }
2668 #endif
2669
2670 static int get_input_packet(InputFile *f, AVPacket *pkt)
2671 {
2672 #if HAVE_PTHREADS
2673     if (nb_input_files > 1)
2674         return get_input_packet_mt(f, pkt);
2675 #endif
2676     return av_read_frame(f->ctx, pkt);
2677 }
2678
2679 /*
2680  * The following code is the main loop of the file converter
2681  */
2682 static int transcode(void)
2683 {
2684     int ret, i;
2685     AVFormatContext *is, *os;
2686     OutputStream *ost;
2687     InputStream *ist;
2688     int no_packet_count = 0;
2689     int64_t timer_start;
2690
2691     ret = transcode_init();
2692     if (ret < 0)
2693         goto fail;
2694
2695     if (stdin_interaction) {
2696         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
2697     }
2698
2699     timer_start = av_gettime();
2700
2701 #if HAVE_PTHREADS
2702     if ((ret = init_input_threads()) < 0)
2703         goto fail;
2704 #endif
2705
2706     for (; received_sigterm == 0;) {
2707         int file_index, ist_index;
2708         AVPacket pkt;
2709         int64_t cur_time= av_gettime();
2710
2711         /* if 'q' pressed, exits */
2712         if (stdin_interaction)
2713             if (check_keyboard_interaction(cur_time) < 0)
2714                 break;
2715
2716         /* check if there's any stream where output is still needed */
2717         if (!need_output()) {
2718             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
2719             break;
2720         }
2721
2722         /* select the stream that we must read now */
2723         file_index = select_input_file();
2724         /* if none, if is finished */
2725         if (file_index == -2) {
2726             poll_filters() ;
2727             continue;
2728         }
2729         if (file_index < 0) {
2730             if (no_packet_count) {
2731                 no_packet_count = 0;
2732                 for (i = 0; i < nb_input_files; i++)
2733                     input_files[i]->unavailable = 0;
2734                 av_usleep(10000);
2735                 continue;
2736             }
2737             av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
2738             break;
2739         }
2740
2741         is  = input_files[file_index]->ctx;
2742         ret = get_input_packet(input_files[file_index], &pkt);
2743
2744         if (ret == AVERROR(EAGAIN)) {
2745             input_files[file_index]->unavailable = 1;
2746             no_packet_count++;
2747             continue;
2748         }
2749         if (ret < 0) {
2750             if (ret != AVERROR_EOF) {
2751                 print_error(is->filename, ret);
2752                 if (exit_on_error)
2753                     exit_program(1);
2754             }
2755             input_files[file_index]->eof_reached = 1;
2756
2757             for (i = 0; i < input_files[file_index]->nb_streams; i++) {
2758                 ist = input_streams[input_files[file_index]->ist_index + i];
2759                 if (ist->decoding_needed)
2760                     output_packet(ist, NULL);
2761                 poll_filters();
2762             }
2763
2764             if (opt_shortest)
2765                 break;
2766             else
2767                 continue;
2768         }
2769
2770         no_packet_count = 0;
2771         for (i = 0; i < nb_input_files; i++)
2772             input_files[i]->unavailable = 0;
2773
2774         if (do_pkt_dump) {
2775             av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2776                              is->streams[pkt.stream_index]);
2777         }
2778         /* the following test is needed in case new streams appear
2779            dynamically in stream : we ignore them */
2780         if (pkt.stream_index >= input_files[file_index]->nb_streams) {
2781             report_new_stream(file_index, &pkt);
2782             goto discard_packet;
2783         }
2784         ist_index = input_files[file_index]->ist_index + pkt.stream_index;
2785         ist = input_streams[ist_index];
2786         if (ist->discard)
2787             goto discard_packet;
2788
2789         if(!ist->wrap_correction_done && input_files[file_index]->ctx->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
2790             uint64_t stime = av_rescale_q(input_files[file_index]->ctx->start_time, AV_TIME_BASE_Q, ist->st->time_base);
2791             uint64_t stime2= stime + (1LL<<ist->st->pts_wrap_bits);
2792             ist->wrap_correction_done = 1;
2793             if(pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime && pkt.dts - stime > stime2 - pkt.dts) {
2794                 pkt.dts -= 1LL<<ist->st->pts_wrap_bits;
2795                 ist->wrap_correction_done = 0;
2796             }
2797             if(pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime && pkt.pts - stime > stime2 - pkt.pts) {
2798                 pkt.pts -= 1LL<<ist->st->pts_wrap_bits;
2799                 ist->wrap_correction_done = 0;
2800             }
2801         }
2802
2803         if (pkt.dts != AV_NOPTS_VALUE)
2804             pkt.dts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2805         if (pkt.pts != AV_NOPTS_VALUE)
2806             pkt.pts += av_rescale_q(input_files[ist->file_index]->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2807
2808         if (pkt.pts != AV_NOPTS_VALUE)
2809             pkt.pts *= ist->ts_scale;
2810         if (pkt.dts != AV_NOPTS_VALUE)
2811             pkt.dts *= ist->ts_scale;
2812
2813         if (debug_ts) {
2814             av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
2815                     "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",
2816                     ist_index, av_get_media_type_string(ist->st->codec->codec_type),
2817                     av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
2818                     av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
2819                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2820                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2821                     input_files[ist->file_index]->ts_offset);
2822         }
2823
2824         if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE && !copy_ts) {
2825             int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2826             int64_t delta   = pkt_dts - ist->next_dts;
2827             if (is->iformat->flags & AVFMT_TS_DISCONT) {
2828             if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2829                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2830                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2831                 pkt_dts+1<ist->pts){
2832                 input_files[ist->file_index]->ts_offset -= delta;
2833                 av_log(NULL, AV_LOG_DEBUG,
2834                        "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2835                        delta, input_files[ist->file_index]->ts_offset);
2836                 pkt.dts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2837                 if (pkt.pts != AV_NOPTS_VALUE)
2838                     pkt.pts-= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2839             }
2840             } else {
2841                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2842                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2843                      pkt_dts+1<ist->pts){
2844                     av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
2845                     pkt.dts = AV_NOPTS_VALUE;
2846                 }
2847                 if (pkt.pts != AV_NOPTS_VALUE){
2848                     int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
2849                     delta   = pkt_pts - ist->next_dts;
2850                     if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2851                         (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2852                         pkt_pts+1<ist->pts) {
2853                         av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
2854                         pkt.pts = AV_NOPTS_VALUE;
2855                     }
2856                 }
2857             }
2858         }
2859
2860         sub2video_heartbeat(ist, pkt.pts);
2861
2862         // fprintf(stderr,"read #%d.%d size=%d\n", ist->file_index, ist->st->index, pkt.size);
2863         if ((ret = output_packet(ist, &pkt)) < 0 ||
2864             ((ret = poll_filters()) < 0 && ret != AVERROR_EOF)) {
2865             char buf[128];
2866             av_strerror(ret, buf, sizeof(buf));
2867             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
2868                    ist->file_index, ist->st->index, buf);
2869             if (exit_on_error)
2870                 exit_program(1);
2871             av_free_packet(&pkt);
2872             continue;
2873         }
2874
2875     discard_packet:
2876         av_free_packet(&pkt);
2877
2878         /* dump report by using the output first video and audio streams */
2879         print_report(0, timer_start, cur_time);
2880     }
2881 #if HAVE_PTHREADS
2882     free_input_threads();
2883 #endif
2884
2885     /* at the end of stream, we must flush the decoder buffers */
2886     for (i = 0; i < nb_input_streams; i++) {
2887         ist = input_streams[i];
2888         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
2889             output_packet(ist, NULL);
2890         }
2891     }
2892     poll_filters();
2893     flush_encoders();
2894
2895     term_exit();
2896
2897     /* write the trailer if needed and close file */
2898     for (i = 0; i < nb_output_files; i++) {
2899         os = output_files[i]->ctx;
2900         av_write_trailer(os);
2901     }
2902
2903     /* dump report by using the first video and audio streams */
2904     print_report(1, timer_start, av_gettime());
2905
2906     /* close each encoder */
2907     for (i = 0; i < nb_output_streams; i++) {
2908         ost = output_streams[i];
2909         if (ost->encoding_needed) {
2910             av_freep(&ost->st->codec->stats_in);
2911             avcodec_close(ost->st->codec);
2912         }
2913     }
2914
2915     /* close each decoder */
2916     for (i = 0; i < nb_input_streams; i++) {
2917         ist = input_streams[i];
2918         if (ist->decoding_needed) {
2919             avcodec_close(ist->st->codec);
2920         }
2921     }
2922
2923     /* finished ! */
2924     ret = 0;
2925
2926  fail:
2927 #if HAVE_PTHREADS
2928     free_input_threads();
2929 #endif
2930
2931     if (output_streams) {
2932         for (i = 0; i < nb_output_streams; i++) {
2933             ost = output_streams[i];
2934             if (ost) {
2935                 if (ost->stream_copy)
2936                     av_freep(&ost->st->codec->extradata);
2937                 if (ost->logfile) {
2938                     fclose(ost->logfile);
2939                     ost->logfile = NULL;
2940                 }
2941                 av_freep(&ost->st->codec->subtitle_header);
2942                 av_free(ost->forced_kf_pts);
2943                 av_dict_free(&ost->opts);
2944             }
2945         }
2946     }
2947     return ret;
2948 }
2949
2950
2951 static int64_t getutime(void)
2952 {
2953 #if HAVE_GETRUSAGE
2954     struct rusage rusage;
2955
2956     getrusage(RUSAGE_SELF, &rusage);
2957     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
2958 #elif HAVE_GETPROCESSTIMES
2959     HANDLE proc;
2960     FILETIME c, e, k, u;
2961     proc = GetCurrentProcess();
2962     GetProcessTimes(proc, &c, &e, &k, &u);
2963     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
2964 #else
2965     return av_gettime();
2966 #endif
2967 }
2968
2969 static int64_t getmaxrss(void)
2970 {
2971 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
2972     struct rusage rusage;
2973     getrusage(RUSAGE_SELF, &rusage);
2974     return (int64_t)rusage.ru_maxrss * 1024;
2975 #elif HAVE_GETPROCESSMEMORYINFO
2976     HANDLE proc;
2977     PROCESS_MEMORY_COUNTERS memcounters;
2978     proc = GetCurrentProcess();
2979     memcounters.cb = sizeof(memcounters);
2980     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
2981     return memcounters.PeakPagefileUsage;
2982 #else
2983     return 0;
2984 #endif
2985 }
2986
2987 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
2988 {
2989 }
2990
2991 static void parse_cpuflags(int argc, char **argv, const OptionDef *options)
2992 {
2993     int idx = locate_option(argc, argv, options, "cpuflags");
2994     if (idx && argv[idx + 1])
2995         opt_cpuflags("cpuflags", argv[idx + 1]);
2996 }
2997
2998 int main(int argc, char **argv)
2999 {
3000     OptionsContext o = { 0 };
3001     int64_t ti;
3002
3003     reset_options(&o, 0);
3004
3005     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3006     parse_loglevel(argc, argv, options);
3007
3008     if(argc>1 && !strcmp(argv[1], "-d")){
3009         run_as_daemon=1;
3010         av_log_set_callback(log_callback_null);
3011         argc--;
3012         argv++;
3013     }
3014
3015     avcodec_register_all();
3016 #if CONFIG_AVDEVICE
3017     avdevice_register_all();
3018 #endif
3019     avfilter_register_all();
3020     av_register_all();
3021     avformat_network_init();
3022
3023     show_banner(argc, argv, options);
3024
3025     term_init();
3026
3027     parse_cpuflags(argc, argv, options);
3028
3029     /* parse options */
3030     parse_options(&o, argc, argv, options, opt_output_file);
3031
3032     if (nb_output_files <= 0 && nb_input_files == 0) {
3033         show_usage();
3034         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3035         exit_program(1);
3036     }
3037
3038     /* file converter / grab */
3039     if (nb_output_files <= 0) {
3040         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3041         exit_program(1);
3042     }
3043
3044     if (nb_input_files == 0) {
3045         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3046         exit_program(1);
3047     }
3048
3049     current_time = ti = getutime();
3050     if (transcode() < 0)
3051         exit_program(1);
3052     ti = getutime() - ti;
3053     if (do_benchmark) {
3054         int maxrss = getmaxrss() / 1024;
3055         printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss);
3056     }
3057
3058     exit_program(0);
3059     return 0;
3060 }