ffmpeg: move close_output_stream earlier.
[ffmpeg.git] / ffmpeg.c
1 /*
2  * Copyright (c) 2000-2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * multimedia converter based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <ctype.h>
28 #include <string.h>
29 #include <math.h>
30 #include <stdlib.h>
31 #include <errno.h>
32 #include <limits.h>
33 #if HAVE_ISATTY
34 #include <unistd.h>
35 #endif
36 #include "libavformat/avformat.h"
37 #include "libavdevice/avdevice.h"
38 #include "libswscale/swscale.h"
39 #include "libswresample/swresample.h"
40 #include "libavutil/opt.h"
41 #include "libavutil/audioconvert.h"
42 #include "libavutil/parseutils.h"
43 #include "libavutil/samplefmt.h"
44 #include "libavutil/colorspace.h"
45 #include "libavutil/fifo.h"
46 #include "libavutil/intreadwrite.h"
47 #include "libavutil/dict.h"
48 #include "libavutil/mathematics.h"
49 #include "libavutil/pixdesc.h"
50 #include "libavutil/avstring.h"
51 #include "libavutil/libm.h"
52 #include "libavutil/imgutils.h"
53 #include "libavutil/timestamp.h"
54 #include "libavutil/bprint.h"
55 #include "libavutil/time.h"
56 #include "libavformat/os_support.h"
57
58 #include "libavformat/ffm.h" // not public API
59
60 # include "libavfilter/avcodec.h"
61 # include "libavfilter/avfilter.h"
62 # include "libavfilter/avfiltergraph.h"
63 # include "libavfilter/buffersrc.h"
64 # include "libavfilter/buffersink.h"
65
66 #if HAVE_SYS_RESOURCE_H
67 #include <sys/types.h>
68 #include <sys/resource.h>
69 #elif HAVE_GETPROCESSTIMES
70 #include <windows.h>
71 #endif
72 #if HAVE_GETPROCESSMEMORYINFO
73 #include <windows.h>
74 #include <psapi.h>
75 #endif
76
77 #if HAVE_SYS_SELECT_H
78 #include <sys/select.h>
79 #endif
80
81 #if HAVE_TERMIOS_H
82 #include <fcntl.h>
83 #include <sys/ioctl.h>
84 #include <sys/time.h>
85 #include <termios.h>
86 #elif HAVE_KBHIT
87 #include <conio.h>
88 #endif
89
90 #if HAVE_PTHREADS
91 #include <pthread.h>
92 #endif
93
94 #include <time.h>
95
96 #include "ffmpeg.h"
97 #include "cmdutils.h"
98
99 #include "libavutil/avassert.h"
100
101 const char program_name[] = "ffmpeg";
102 const int program_birth_year = 2000;
103
104 static FILE *vstats_file;
105
106 static void do_video_stats(AVFormatContext *os, OutputStream *ost, int frame_size);
107 static int64_t getutime(void);
108
109 static int run_as_daemon  = 0;
110 static int64_t video_size = 0;
111 static int64_t audio_size = 0;
112 static int64_t subtitle_size = 0;
113 static int64_t extra_size = 0;
114 static int nb_frames_dup = 0;
115 static int nb_frames_drop = 0;
116
117 static int current_time;
118 AVIOContext *progress_avio = NULL;
119
120 static uint8_t *subtitle_out;
121
122 #if HAVE_PTHREADS
123 /* signal to input threads that they should exit; set by the main thread */
124 static int transcoding_finished;
125 #endif
126
127 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
128
129 InputStream **input_streams = NULL;
130 int        nb_input_streams = 0;
131 InputFile   **input_files   = NULL;
132 int        nb_input_files   = 0;
133
134 OutputStream **output_streams = NULL;
135 int         nb_output_streams = 0;
136 OutputFile   **output_files   = NULL;
137 int         nb_output_files   = 0;
138
139 FilterGraph **filtergraphs;
140 int        nb_filtergraphs;
141
142 #if HAVE_TERMIOS_H
143
144 /* init terminal so that we can grab keys */
145 static struct termios oldtty;
146 static int restore_tty;
147 #endif
148
149
150 /* sub2video hack:
151    Convert subtitles to video with alpha to insert them in filter graphs.
152    This is a temporary solution until libavfilter gets real subtitles support.
153  */
154
155
156
157 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
158                                 AVSubtitleRect *r)
159 {
160     uint32_t *pal, *dst2;
161     uint8_t *src, *src2;
162     int x, y;
163
164     if (r->type != SUBTITLE_BITMAP) {
165         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
166         return;
167     }
168     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
169         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
170         return;
171     }
172
173     dst += r->y * dst_linesize + r->x * 4;
174     src = r->pict.data[0];
175     pal = (uint32_t *)r->pict.data[1];
176     for (y = 0; y < r->h; y++) {
177         dst2 = (uint32_t *)dst;
178         src2 = src;
179         for (x = 0; x < r->w; x++)
180             *(dst2++) = pal[*(src2++)];
181         dst += dst_linesize;
182         src += r->pict.linesize[0];
183     }
184 }
185
186 static void sub2video_push_ref(InputStream *ist, int64_t pts)
187 {
188     AVFilterBufferRef *ref = ist->sub2video.ref;
189     int i;
190
191     ist->sub2video.last_pts = ref->pts = pts;
192     for (i = 0; i < ist->nb_filters; i++)
193         av_buffersrc_add_ref(ist->filters[i]->filter,
194                              avfilter_ref_buffer(ref, ~0),
195                              AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
196                              AV_BUFFERSRC_FLAG_NO_COPY |
197                              AV_BUFFERSRC_FLAG_PUSH);
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 static volatile int received_nb_signals = 0;
266
267 static void
268 sigterm_handler(int sig)
269 {
270     received_sigterm = sig;
271     received_nb_signals++;
272     term_exit();
273     if(received_nb_signals > 3)
274         exit(123);
275 }
276
277 void term_init(void)
278 {
279 #if HAVE_TERMIOS_H
280     if(!run_as_daemon){
281         struct termios tty;
282         int istty = 1;
283 #if HAVE_ISATTY
284         istty = isatty(0) && isatty(2);
285 #endif
286         if (istty && tcgetattr (0, &tty) == 0) {
287             oldtty = tty;
288             restore_tty = 1;
289             atexit(term_exit);
290
291             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
292                              |INLCR|IGNCR|ICRNL|IXON);
293             tty.c_oflag |= OPOST;
294             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
295             tty.c_cflag &= ~(CSIZE|PARENB);
296             tty.c_cflag |= CS8;
297             tty.c_cc[VMIN] = 1;
298             tty.c_cc[VTIME] = 0;
299
300             tcsetattr (0, TCSANOW, &tty);
301         }
302         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
303     }
304 #endif
305     avformat_network_deinit();
306
307     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
308     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
309 #ifdef SIGXCPU
310     signal(SIGXCPU, sigterm_handler);
311 #endif
312 }
313
314 /* read a key without blocking */
315 static int read_key(void)
316 {
317     unsigned char ch;
318 #if HAVE_TERMIOS_H
319     int n = 1;
320     struct timeval tv;
321     fd_set rfds;
322
323     FD_ZERO(&rfds);
324     FD_SET(0, &rfds);
325     tv.tv_sec = 0;
326     tv.tv_usec = 0;
327     n = select(1, &rfds, NULL, NULL, &tv);
328     if (n > 0) {
329         n = read(0, &ch, 1);
330         if (n == 1)
331             return ch;
332
333         return n;
334     }
335 #elif HAVE_KBHIT
336 #    if HAVE_PEEKNAMEDPIPE
337     static int is_pipe;
338     static HANDLE input_handle;
339     DWORD dw, nchars;
340     if(!input_handle){
341         input_handle = GetStdHandle(STD_INPUT_HANDLE);
342         is_pipe = !GetConsoleMode(input_handle, &dw);
343     }
344
345     if (stdin->_cnt > 0) {
346         read(0, &ch, 1);
347         return ch;
348     }
349     if (is_pipe) {
350         /* When running under a GUI, you will end here. */
351         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
352             return -1;
353         //Read it
354         if(nchars != 0) {
355             read(0, &ch, 1);
356             return ch;
357         }else{
358             return -1;
359         }
360     }
361 #    endif
362     if(kbhit())
363         return(getch());
364 #endif
365     return -1;
366 }
367
368 static int decode_interrupt_cb(void *ctx)
369 {
370     return received_nb_signals > 1;
371 }
372
373 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
374
375 void av_noreturn exit_program(int ret)
376 {
377     int i, j;
378
379     for (i = 0; i < nb_filtergraphs; i++) {
380         avfilter_graph_free(&filtergraphs[i]->graph);
381         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
382             av_freep(&filtergraphs[i]->inputs[j]->name);
383             av_freep(&filtergraphs[i]->inputs[j]);
384         }
385         av_freep(&filtergraphs[i]->inputs);
386         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
387             av_freep(&filtergraphs[i]->outputs[j]->name);
388             av_freep(&filtergraphs[i]->outputs[j]);
389         }
390         av_freep(&filtergraphs[i]->outputs);
391         av_freep(&filtergraphs[i]);
392     }
393     av_freep(&filtergraphs);
394
395     av_freep(&subtitle_out);
396
397     /* close files */
398     for (i = 0; i < nb_output_files; i++) {
399         AVFormatContext *s = output_files[i]->ctx;
400         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
401             avio_close(s->pb);
402         avformat_free_context(s);
403         av_dict_free(&output_files[i]->opts);
404         av_freep(&output_files[i]);
405     }
406     for (i = 0; i < nb_output_streams; i++) {
407         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
408         while (bsfc) {
409             AVBitStreamFilterContext *next = bsfc->next;
410             av_bitstream_filter_close(bsfc);
411             bsfc = next;
412         }
413         output_streams[i]->bitstream_filters = NULL;
414
415         av_freep(&output_streams[i]->forced_keyframes);
416         av_freep(&output_streams[i]->avfilter);
417         av_freep(&output_streams[i]->filtered_frame);
418         av_freep(&output_streams[i]);
419     }
420     for (i = 0; i < nb_input_files; i++) {
421         avformat_close_input(&input_files[i]->ctx);
422         av_freep(&input_files[i]);
423     }
424     for (i = 0; i < nb_input_streams; i++) {
425         av_freep(&input_streams[i]->decoded_frame);
426         av_dict_free(&input_streams[i]->opts);
427         free_buffer_pool(&input_streams[i]->buffer_pool);
428         avfilter_unref_bufferp(&input_streams[i]->sub2video.ref);
429         av_freep(&input_streams[i]->filters);
430         av_freep(&input_streams[i]);
431     }
432
433     if (vstats_file)
434         fclose(vstats_file);
435     av_free(vstats_filename);
436
437     av_freep(&input_streams);
438     av_freep(&input_files);
439     av_freep(&output_streams);
440     av_freep(&output_files);
441
442     uninit_opts();
443
444     avfilter_uninit();
445     avformat_network_deinit();
446
447     if (received_sigterm) {
448         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
449                (int) received_sigterm);
450         exit (255);
451     }
452
453     exit(ret);
454 }
455
456 void assert_avoptions(AVDictionary *m)
457 {
458     AVDictionaryEntry *t;
459     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
460         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
461         exit_program(1);
462     }
463 }
464
465 static void assert_codec_experimental(AVCodecContext *c, int encoder)
466 {
467     const char *codec_string = encoder ? "encoder" : "decoder";
468     AVCodec *codec;
469     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
470         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
471         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
472                 "results.\nAdd '-strict experimental' if you want to use it.\n",
473                 codec_string, c->codec->name);
474         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
475         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
476             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
477                    codec_string, codec->name);
478         exit_program(1);
479     }
480 }
481
482 static void update_benchmark(const char *fmt, ...)
483 {
484     if (do_benchmark_all) {
485         int64_t t = getutime();
486         va_list va;
487         char buf[1024];
488
489         if (fmt) {
490             va_start(va, fmt);
491             vsnprintf(buf, sizeof(buf), fmt, va);
492             va_end(va);
493             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
494         }
495         current_time = t;
496     }
497 }
498
499 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
500 {
501     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
502     AVCodecContext          *avctx = ost->st->codec;
503     int ret;
504
505     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
506         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
507         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
508
509     if ((avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) && pkt->dts != AV_NOPTS_VALUE) {
510         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
511         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
512             av_log(s, max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG,
513                    "st:%d PTS: %"PRId64" DTS: %"PRId64" < %"PRId64" invalid, clipping\n", pkt->stream_index, pkt->pts, pkt->dts, max);
514             if(pkt->pts >= pkt->dts)
515                 pkt->pts = FFMAX(pkt->pts, max);
516             pkt->dts = max;
517         }
518     }
519
520     /*
521      * Audio encoders may split the packets --  #frames in != #packets out.
522      * But there is no reordering, so we can limit the number of output packets
523      * by simply dropping them here.
524      * Counting encoded video frames needs to be done separately because of
525      * reordering, see do_video_out()
526      */
527     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
528         if (ost->frame_number >= ost->max_frames) {
529             av_free_packet(pkt);
530             return;
531         }
532         ost->frame_number++;
533     }
534
535     while (bsfc) {
536         AVPacket new_pkt = *pkt;
537         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
538                                            &new_pkt.data, &new_pkt.size,
539                                            pkt->data, pkt->size,
540                                            pkt->flags & AV_PKT_FLAG_KEY);
541         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
542             uint8_t *t = av_malloc(new_pkt.size + FF_INPUT_BUFFER_PADDING_SIZE); //the new should be a subset of the old so cannot overflow
543             if(t) {
544                 memcpy(t, new_pkt.data, new_pkt.size);
545                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
546                 new_pkt.data = t;
547                 a = 1;
548             } else
549                 a = AVERROR(ENOMEM);
550         }
551         if (a > 0) {
552             av_free_packet(pkt);
553             new_pkt.destruct = av_destruct_packet;
554         } else if (a < 0) {
555             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
556                    bsfc->filter->name, pkt->stream_index,
557                    avctx->codec ? avctx->codec->name : "copy");
558             print_error("", a);
559             if (exit_on_error)
560                 exit_program(1);
561         }
562         *pkt = new_pkt;
563
564         bsfc = bsfc->next;
565     }
566
567     pkt->stream_index = ost->index;
568     ret = av_interleaved_write_frame(s, pkt);
569     if (ret < 0) {
570         print_error("av_interleaved_write_frame()", ret);
571         exit_program(1);
572     }
573 }
574
575 static void close_output_stream(OutputStream *ost)
576 {
577     OutputFile *of = output_files[ost->file_index];
578
579     ost->finished = 1;
580     if (of->shortest) {
581         int i;
582         for (i = 0; i < of->ctx->nb_streams; i++)
583             output_streams[of->ost_index + i]->finished = 1;
584     }
585 }
586
587 static int check_recording_time(OutputStream *ost)
588 {
589     OutputFile *of = output_files[ost->file_index];
590
591     if (of->recording_time != INT64_MAX &&
592         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
593                       AV_TIME_BASE_Q) >= 0) {
594         ost->finished = 1;
595         return 0;
596     }
597     return 1;
598 }
599
600 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
601                          AVFrame *frame)
602 {
603     AVCodecContext *enc = ost->st->codec;
604     AVPacket pkt;
605     int got_packet = 0;
606
607     av_init_packet(&pkt);
608     pkt.data = NULL;
609     pkt.size = 0;
610
611     if (!check_recording_time(ost))
612         return;
613
614     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
615         frame->pts = ost->sync_opts;
616     ost->sync_opts = frame->pts + frame->nb_samples;
617
618     av_assert0(pkt.size || !pkt.data);
619     update_benchmark(NULL);
620     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
621         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
622         exit_program(1);
623     }
624     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
625
626     if (got_packet) {
627         if (pkt.pts != AV_NOPTS_VALUE)
628             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
629         if (pkt.dts != AV_NOPTS_VALUE)
630             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
631         if (pkt.duration > 0)
632             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
633
634         if (debug_ts) {
635             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
636                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
637                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
638                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
639         }
640
641         write_frame(s, &pkt, ost);
642
643         audio_size += pkt.size;
644         av_free_packet(&pkt);
645     }
646 }
647
648 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
649 {
650     AVCodecContext *dec;
651     AVPicture *picture2;
652     AVPicture picture_tmp;
653     uint8_t *buf = 0;
654
655     dec = ist->st->codec;
656
657     /* deinterlace : must be done before any resize */
658     if (do_deinterlace) {
659         int size;
660
661         /* create temporary picture */
662         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
663         buf  = av_malloc(size);
664         if (!buf)
665             return;
666
667         picture2 = &picture_tmp;
668         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
669
670         if (avpicture_deinterlace(picture2, picture,
671                                  dec->pix_fmt, dec->width, dec->height) < 0) {
672             /* if error, do not deinterlace */
673             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
674             av_free(buf);
675             buf = NULL;
676             picture2 = picture;
677         }
678     } else {
679         picture2 = picture;
680     }
681
682     if (picture != picture2)
683         *picture = *picture2;
684     *bufp = buf;
685 }
686
687 static void do_subtitle_out(AVFormatContext *s,
688                             OutputStream *ost,
689                             InputStream *ist,
690                             AVSubtitle *sub,
691                             int64_t pts)
692 {
693     int subtitle_out_max_size = 1024 * 1024;
694     int subtitle_out_size, nb, i;
695     AVCodecContext *enc;
696     AVPacket pkt;
697
698     if (pts == AV_NOPTS_VALUE) {
699         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
700         if (exit_on_error)
701             exit_program(1);
702         return;
703     }
704
705     enc = ost->st->codec;
706
707     if (!subtitle_out) {
708         subtitle_out = av_malloc(subtitle_out_max_size);
709     }
710
711     /* Note: DVB subtitle need one packet to draw them and one other
712        packet to clear them */
713     /* XXX: signal it in the codec context ? */
714     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
715         nb = 2;
716     else
717         nb = 1;
718
719     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
720     pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q)
721         - output_files[ost->file_index]->start_time;
722     for (i = 0; i < nb; i++) {
723         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
724         if (!check_recording_time(ost))
725             return;
726
727         sub->pts = pts;
728         // start_display_time is required to be 0
729         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
730         sub->end_display_time  -= sub->start_display_time;
731         sub->start_display_time = 0;
732         if (i == 1)
733             sub->num_rects = 0;
734         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
735                                                     subtitle_out_max_size, sub);
736         if (subtitle_out_size < 0) {
737             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
738             exit_program(1);
739         }
740
741         av_init_packet(&pkt);
742         pkt.data = subtitle_out;
743         pkt.size = subtitle_out_size;
744         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
745         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
746         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
747             /* XXX: the pts correction is handled here. Maybe handling
748                it in the codec would be better */
749             if (i == 0)
750                 pkt.pts += 90 * sub->start_display_time;
751             else
752                 pkt.pts += 90 * sub->end_display_time;
753         }
754         write_frame(s, &pkt, ost);
755         subtitle_size += pkt.size;
756     }
757 }
758
759 static void do_video_out(AVFormatContext *s,
760                          OutputStream *ost,
761                          AVFrame *in_picture,
762                          float quality)
763 {
764     int ret, format_video_sync;
765     AVPacket pkt;
766     AVCodecContext *enc = ost->st->codec;
767     int nb_frames, i;
768     double sync_ipts, delta;
769     double duration = 0;
770     int frame_size = 0;
771     InputStream *ist = NULL;
772
773     if (ost->source_index >= 0)
774         ist = input_streams[ost->source_index];
775
776     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
777         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
778
779     sync_ipts = in_picture->pts;
780     delta = sync_ipts - ost->sync_opts + duration;
781
782     /* by default, we output a single frame */
783     nb_frames = 1;
784
785     format_video_sync = video_sync_method;
786     if (format_video_sync == VSYNC_AUTO)
787         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
788
789     switch (format_video_sync) {
790     case VSYNC_CFR:
791         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
792         if (delta < -1.1)
793             nb_frames = 0;
794         else if (delta > 1.1)
795             nb_frames = lrintf(delta);
796         break;
797     case VSYNC_VFR:
798         if (delta <= -0.6)
799             nb_frames = 0;
800         else if (delta > 0.6)
801             ost->sync_opts = lrint(sync_ipts);
802         break;
803     case VSYNC_DROP:
804     case VSYNC_PASSTHROUGH:
805         ost->sync_opts = lrint(sync_ipts);
806         break;
807     default:
808         av_assert0(0);
809     }
810
811     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
812     if (nb_frames == 0) {
813         nb_frames_drop++;
814         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
815         return;
816     } else if (nb_frames > 1) {
817         if (nb_frames > dts_error_threshold * 30) {
818             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skiping\n", nb_frames - 1);
819             nb_frames_drop++;
820             return;
821         }
822         nb_frames_dup += nb_frames - 1;
823         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
824     }
825
826   /* duplicates frame if needed */
827   for (i = 0; i < nb_frames; i++) {
828     av_init_packet(&pkt);
829     pkt.data = NULL;
830     pkt.size = 0;
831
832     in_picture->pts = ost->sync_opts;
833
834     if (!check_recording_time(ost))
835         return;
836
837     if (s->oformat->flags & AVFMT_RAWPICTURE &&
838         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
839         /* raw pictures are written as AVPicture structure to
840            avoid any copies. We support temporarily the older
841            method. */
842         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
843         enc->coded_frame->top_field_first  = in_picture->top_field_first;
844         pkt.data   = (uint8_t *)in_picture;
845         pkt.size   =  sizeof(AVPicture);
846         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
847         pkt.flags |= AV_PKT_FLAG_KEY;
848
849         write_frame(s, &pkt, ost);
850         video_size += pkt.size;
851     } else {
852         int got_packet;
853         AVFrame big_picture;
854
855         big_picture = *in_picture;
856         /* better than nothing: use input picture interlaced
857            settings */
858         big_picture.interlaced_frame = in_picture->interlaced_frame;
859         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
860             if (ost->top_field_first == -1)
861                 big_picture.top_field_first = in_picture->top_field_first;
862             else
863                 big_picture.top_field_first = !!ost->top_field_first;
864         }
865
866         /* handles same_quant here. This is not correct because it may
867            not be a global option */
868         big_picture.quality = quality;
869         if (!enc->me_threshold)
870             big_picture.pict_type = 0;
871         if (ost->forced_kf_index < ost->forced_kf_count &&
872             big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
873             big_picture.pict_type = AV_PICTURE_TYPE_I;
874             ost->forced_kf_index++;
875         }
876         update_benchmark(NULL);
877         ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
878         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
879         if (ret < 0) {
880             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
881             exit_program(1);
882         }
883
884         if (got_packet) {
885             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
886                 pkt.pts = ost->sync_opts;
887
888             if (pkt.pts != AV_NOPTS_VALUE)
889                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
890             if (pkt.dts != AV_NOPTS_VALUE)
891                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
892
893             if (debug_ts) {
894                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
895                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
896                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
897                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
898             }
899
900             write_frame(s, &pkt, ost);
901             frame_size = pkt.size;
902             video_size += pkt.size;
903             av_free_packet(&pkt);
904
905             /* if two pass, output log */
906             if (ost->logfile && enc->stats_out) {
907                 fprintf(ost->logfile, "%s", enc->stats_out);
908             }
909         }
910     }
911     ost->sync_opts++;
912     /*
913      * For video, number of frames in == number of packets out.
914      * But there may be reordering, so we can't throw away frames on encoder
915      * flush, we need to limit them here, before they go into encoder.
916      */
917     ost->frame_number++;
918   }
919
920     if (vstats_filename && frame_size)
921         do_video_stats(output_files[ost->file_index]->ctx, ost, frame_size);
922 }
923
924 static double psnr(double d)
925 {
926     return -10.0 * log(d) / log(10.0);
927 }
928
929 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
930                            int frame_size)
931 {
932     AVCodecContext *enc;
933     int frame_number;
934     double ti1, bitrate, avg_bitrate;
935
936     /* this is executed just the first time do_video_stats is called */
937     if (!vstats_file) {
938         vstats_file = fopen(vstats_filename, "w");
939         if (!vstats_file) {
940             perror("fopen");
941             exit_program(1);
942         }
943     }
944
945     enc = ost->st->codec;
946     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
947         frame_number = ost->frame_number;
948         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
949         if (enc->flags&CODEC_FLAG_PSNR)
950             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
951
952         fprintf(vstats_file,"f_size= %6d ", frame_size);
953         /* compute pts value */
954         ti1 = ost->sync_opts * av_q2d(enc->time_base);
955         if (ti1 < 0.01)
956             ti1 = 0.01;
957
958         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
959         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
960         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
961                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
962         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
963     }
964 }
965
966 /**
967  * Get and encode new output from any of the filtergraphs, without causing
968  * activity.
969  *
970  * @return  0 for success, <0 for severe errors
971  */
972 static int reap_filters(void)
973 {
974     AVFilterBufferRef *picref;
975     AVFrame *filtered_frame = NULL;
976     int i;
977     int64_t frame_pts;
978
979     /* Reap all buffers present in the buffer sinks */
980     for (i = 0; i < nb_output_streams; i++) {
981         OutputStream *ost = output_streams[i];
982         OutputFile    *of = output_files[ost->file_index];
983         int ret = 0;
984
985         if (!ost->filter)
986             continue;
987
988         if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
989             return AVERROR(ENOMEM);
990         } else
991             avcodec_get_frame_defaults(ost->filtered_frame);
992         filtered_frame = ost->filtered_frame;
993
994         while (1) {
995             ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
996                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
997             if (ret < 0) {
998                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
999                     char buf[256];
1000                     av_strerror(ret, buf, sizeof(buf));
1001                     av_log(NULL, AV_LOG_WARNING,
1002                            "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
1003                 }
1004                 break;
1005             }
1006             frame_pts = AV_NOPTS_VALUE;
1007             if (picref->pts != AV_NOPTS_VALUE) {
1008                 filtered_frame->pts = frame_pts = av_rescale_q(picref->pts,
1009                                                 ost->filter->filter->inputs[0]->time_base,
1010                                                 ost->st->codec->time_base) -
1011                                     av_rescale_q(of->start_time,
1012                                                 AV_TIME_BASE_Q,
1013                                                 ost->st->codec->time_base);
1014
1015                 if (of->start_time && filtered_frame->pts < 0) {
1016                     avfilter_unref_buffer(picref);
1017                     continue;
1018                 }
1019             }
1020             //if (ost->source_index >= 0)
1021             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1022
1023
1024             switch (ost->filter->filter->inputs[0]->type) {
1025             case AVMEDIA_TYPE_VIDEO:
1026                 avfilter_copy_buf_props(filtered_frame, picref);
1027                 filtered_frame->pts = frame_pts;
1028                 if (!ost->frame_aspect_ratio)
1029                     ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
1030
1031                 do_video_out(of->ctx, ost, filtered_frame,
1032                              same_quant ? ost->last_quality :
1033                                           ost->st->codec->global_quality);
1034                 break;
1035             case AVMEDIA_TYPE_AUDIO:
1036                 avfilter_copy_buf_props(filtered_frame, picref);
1037                 filtered_frame->pts = frame_pts;
1038                 do_audio_out(of->ctx, ost, filtered_frame);
1039                 break;
1040             default:
1041                 // TODO support subtitle filters
1042                 av_assert0(0);
1043             }
1044
1045             avfilter_unref_buffer(picref);
1046         }
1047     }
1048
1049     return 0;
1050 }
1051
1052 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1053 {
1054     char buf[1024];
1055     AVBPrint buf_script;
1056     OutputStream *ost;
1057     AVFormatContext *oc;
1058     int64_t total_size;
1059     AVCodecContext *enc;
1060     int frame_number, vid, i;
1061     double bitrate;
1062     int64_t pts = INT64_MAX;
1063     static int64_t last_time = -1;
1064     static int qp_histogram[52];
1065     int hours, mins, secs, us;
1066
1067     if (!print_stats && !is_last_report && !progress_avio)
1068         return;
1069
1070     if (!is_last_report) {
1071         if (last_time == -1) {
1072             last_time = cur_time;
1073             return;
1074         }
1075         if ((cur_time - last_time) < 500000)
1076             return;
1077         last_time = cur_time;
1078     }
1079
1080
1081     oc = output_files[0]->ctx;
1082
1083     total_size = avio_size(oc->pb);
1084     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
1085         total_size = avio_tell(oc->pb);
1086         if (total_size < 0)
1087             total_size = 0;
1088     }
1089
1090     buf[0] = '\0';
1091     vid = 0;
1092     av_bprint_init(&buf_script, 0, 1);
1093     for (i = 0; i < nb_output_streams; i++) {
1094         float q = -1;
1095         ost = output_streams[i];
1096         enc = ost->st->codec;
1097         if (!ost->stream_copy && enc->coded_frame)
1098             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1099         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1100             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1101             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1102                        ost->file_index, ost->index, q);
1103         }
1104         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1105             float fps, t = (cur_time-timer_start) / 1000000.0;
1106
1107             frame_number = ost->frame_number;
1108             fps = t > 1 ? frame_number / t : 0;
1109             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1110                      frame_number, fps < 9.95, fps, q);
1111             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1112             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1113             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1114                        ost->file_index, ost->index, q);
1115             if (is_last_report)
1116                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1117             if (qp_hist) {
1118                 int j;
1119                 int qp = lrintf(q);
1120                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1121                     qp_histogram[qp]++;
1122                 for (j = 0; j < 32; j++)
1123                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1124             }
1125             if (enc->flags&CODEC_FLAG_PSNR) {
1126                 int j;
1127                 double error, error_sum = 0;
1128                 double scale, scale_sum = 0;
1129                 double p;
1130                 char type[3] = { 'Y','U','V' };
1131                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1132                 for (j = 0; j < 3; j++) {
1133                     if (is_last_report) {
1134                         error = enc->error[j];
1135                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1136                     } else {
1137                         error = enc->coded_frame->error[j];
1138                         scale = enc->width * enc->height * 255.0 * 255.0;
1139                     }
1140                     if (j)
1141                         scale /= 4;
1142                     error_sum += error;
1143                     scale_sum += scale;
1144                     p = psnr(error / scale);
1145                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1146                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1147                                ost->file_index, ost->index, type[i] | 32, p);
1148                 }
1149                 p = psnr(error_sum / scale_sum);
1150                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1151                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1152                            ost->file_index, ost->index, p);
1153             }
1154             vid = 1;
1155         }
1156         /* compute min output value */
1157         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
1158                                       ost->st->time_base, AV_TIME_BASE_Q));
1159     }
1160
1161     secs = pts / AV_TIME_BASE;
1162     us = pts % AV_TIME_BASE;
1163     mins = secs / 60;
1164     secs %= 60;
1165     hours = mins / 60;
1166     mins %= 60;
1167
1168     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1169
1170     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1171              "size=%8.0fkB time=", total_size / 1024.0);
1172     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1173              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1174              (100 * us) / AV_TIME_BASE);
1175     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1176              "bitrate=%6.1fkbits/s", bitrate);
1177     av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1178     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1179     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1180                hours, mins, secs, us);
1181
1182     if (nb_frames_dup || nb_frames_drop)
1183         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1184                 nb_frames_dup, nb_frames_drop);
1185     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1186     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1187
1188     if (print_stats || is_last_report) {
1189     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1190
1191     fflush(stderr);
1192     }
1193
1194     if (progress_avio) {
1195         av_bprintf(&buf_script, "progress=%s\n",
1196                    is_last_report ? "end" : "continue");
1197         avio_write(progress_avio, buf_script.str,
1198                    FFMIN(buf_script.len, buf_script.size - 1));
1199         avio_flush(progress_avio);
1200         av_bprint_finalize(&buf_script, NULL);
1201         if (is_last_report) {
1202             avio_close(progress_avio);
1203             progress_avio = NULL;
1204         }
1205     }
1206
1207     if (is_last_report) {
1208         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1209         av_log(NULL, AV_LOG_INFO, "\n");
1210         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1211                video_size / 1024.0,
1212                audio_size / 1024.0,
1213                subtitle_size / 1024.0,
1214                extra_size / 1024.0,
1215                100.0 * (total_size - raw) / raw
1216         );
1217         if(video_size + audio_size + subtitle_size + extra_size == 0){
1218             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1219         }
1220     }
1221 }
1222
1223 static void flush_encoders(void)
1224 {
1225     int i, ret;
1226
1227     for (i = 0; i < nb_output_streams; i++) {
1228         OutputStream   *ost = output_streams[i];
1229         AVCodecContext *enc = ost->st->codec;
1230         AVFormatContext *os = output_files[ost->file_index]->ctx;
1231         int stop_encoding = 0;
1232
1233         if (!ost->encoding_needed)
1234             continue;
1235
1236         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1237             continue;
1238         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1239             continue;
1240
1241         for (;;) {
1242             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1243             const char *desc;
1244             int64_t *size;
1245
1246             switch (ost->st->codec->codec_type) {
1247             case AVMEDIA_TYPE_AUDIO:
1248                 encode = avcodec_encode_audio2;
1249                 desc   = "Audio";
1250                 size   = &audio_size;
1251                 break;
1252             case AVMEDIA_TYPE_VIDEO:
1253                 encode = avcodec_encode_video2;
1254                 desc   = "Video";
1255                 size   = &video_size;
1256                 break;
1257             default:
1258                 stop_encoding = 1;
1259             }
1260
1261             if (encode) {
1262                 AVPacket pkt;
1263                 int got_packet;
1264                 av_init_packet(&pkt);
1265                 pkt.data = NULL;
1266                 pkt.size = 0;
1267
1268                 update_benchmark(NULL);
1269                 ret = encode(enc, &pkt, NULL, &got_packet);
1270                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1271                 if (ret < 0) {
1272                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1273                     exit_program(1);
1274                 }
1275                 *size += pkt.size;
1276                 if (ost->logfile && enc->stats_out) {
1277                     fprintf(ost->logfile, "%s", enc->stats_out);
1278                 }
1279                 if (!got_packet) {
1280                     stop_encoding = 1;
1281                     break;
1282                 }
1283                 if (pkt.pts != AV_NOPTS_VALUE)
1284                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1285                 if (pkt.dts != AV_NOPTS_VALUE)
1286                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1287                 write_frame(os, &pkt, ost);
1288             }
1289
1290             if (stop_encoding)
1291                 break;
1292         }
1293     }
1294 }
1295
1296 /*
1297  * Check whether a packet from ist should be written into ost at this time
1298  */
1299 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1300 {
1301     OutputFile *of = output_files[ost->file_index];
1302     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1303
1304     if (ost->source_index != ist_index)
1305         return 0;
1306
1307     if (of->start_time && ist->pts < of->start_time)
1308         return 0;
1309
1310     return 1;
1311 }
1312
1313 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1314 {
1315     OutputFile *of = output_files[ost->file_index];
1316     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1317     AVPicture pict;
1318     AVPacket opkt;
1319
1320     av_init_packet(&opkt);
1321
1322     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1323         !ost->copy_initial_nonkeyframes)
1324         return;
1325
1326     if (of->recording_time != INT64_MAX &&
1327         ist->pts >= of->recording_time + of->start_time) {
1328         ost->finished = 1;
1329         return;
1330     }
1331
1332     /* force the input stream PTS */
1333     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1334         audio_size += pkt->size;
1335     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1336         video_size += pkt->size;
1337         ost->sync_opts++;
1338     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1339         subtitle_size += pkt->size;
1340     }
1341
1342     if (pkt->pts != AV_NOPTS_VALUE)
1343         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1344     else
1345         opkt.pts = AV_NOPTS_VALUE;
1346
1347     if (pkt->dts == AV_NOPTS_VALUE)
1348         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1349     else
1350         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1351     opkt.dts -= ost_tb_start_time;
1352
1353     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1354     opkt.flags    = pkt->flags;
1355
1356     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1357     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1358        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1359        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1360        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1361        ) {
1362         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1363             opkt.destruct = av_destruct_packet;
1364     } else {
1365         opkt.data = pkt->data;
1366         opkt.size = pkt->size;
1367     }
1368
1369     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1370         /* store AVPicture in AVPacket, as expected by the output format */
1371         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1372         opkt.data = (uint8_t *)&pict;
1373         opkt.size = sizeof(AVPicture);
1374         opkt.flags |= AV_PKT_FLAG_KEY;
1375     }
1376
1377     write_frame(of->ctx, &opkt, ost);
1378     ost->st->codec->frame_number++;
1379     av_free_packet(&opkt);
1380 }
1381
1382 static void rate_emu_sleep(InputStream *ist)
1383 {
1384     if (input_files[ist->file_index]->rate_emu) {
1385         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
1386         int64_t now = av_gettime() - ist->start;
1387         if (pts > now)
1388             av_usleep(pts - now);
1389     }
1390 }
1391
1392 int guess_input_channel_layout(InputStream *ist)
1393 {
1394     AVCodecContext *dec = ist->st->codec;
1395
1396     if (!dec->channel_layout) {
1397         char layout_name[256];
1398
1399         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1400         if (!dec->channel_layout)
1401             return 0;
1402         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1403                                      dec->channels, dec->channel_layout);
1404         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1405                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1406     }
1407     return 1;
1408 }
1409
1410 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1411 {
1412     AVFrame *decoded_frame;
1413     AVCodecContext *avctx = ist->st->codec;
1414     int i, ret, resample_changed;
1415     AVRational decoded_frame_tb;
1416
1417     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1418         return AVERROR(ENOMEM);
1419     else
1420         avcodec_get_frame_defaults(ist->decoded_frame);
1421     decoded_frame = ist->decoded_frame;
1422
1423     update_benchmark(NULL);
1424     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1425     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1426
1427     if (ret >= 0 && avctx->sample_rate <= 0) {
1428         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1429         ret = AVERROR_INVALIDDATA;
1430     }
1431
1432     if (!*got_output || ret < 0) {
1433         if (!pkt->size) {
1434             for (i = 0; i < ist->nb_filters; i++)
1435                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1436         }
1437         return ret;
1438     }
1439
1440 #if 1
1441     /* increment next_dts to use for the case where the input stream does not
1442        have timestamps or there are multiple frames in the packet */
1443     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1444                      avctx->sample_rate;
1445     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1446                      avctx->sample_rate;
1447 #endif
1448
1449     rate_emu_sleep(ist);
1450
1451     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1452                        ist->resample_channels       != avctx->channels               ||
1453                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1454                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1455     if (resample_changed) {
1456         char layout1[64], layout2[64];
1457
1458         if (!guess_input_channel_layout(ist)) {
1459             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1460                    "layout for Input Stream #%d.%d\n", ist->file_index,
1461                    ist->st->index);
1462             exit_program(1);
1463         }
1464         decoded_frame->channel_layout = avctx->channel_layout;
1465
1466         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1467                                      ist->resample_channel_layout);
1468         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1469                                      decoded_frame->channel_layout);
1470
1471         av_log(NULL, AV_LOG_INFO,
1472                "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",
1473                ist->file_index, ist->st->index,
1474                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1475                ist->resample_channels, layout1,
1476                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1477                avctx->channels, layout2);
1478
1479         ist->resample_sample_fmt     = decoded_frame->format;
1480         ist->resample_sample_rate    = decoded_frame->sample_rate;
1481         ist->resample_channel_layout = decoded_frame->channel_layout;
1482         ist->resample_channels       = avctx->channels;
1483
1484         for (i = 0; i < nb_filtergraphs; i++)
1485             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1486                 FilterGraph *fg = filtergraphs[i];
1487                 int j;
1488                 if (configure_filtergraph(fg) < 0) {
1489                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1490                     exit_program(1);
1491                 }
1492                 for (j = 0; j < fg->nb_outputs; j++) {
1493                     OutputStream *ost = fg->outputs[j]->ost;
1494                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1495                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1496                         av_buffersink_set_frame_size(ost->filter->filter,
1497                                                      ost->st->codec->frame_size);
1498                 }
1499             }
1500     }
1501
1502     /* if the decoder provides a pts, use it instead of the last packet pts.
1503        the decoder could be delaying output by a packet or more. */
1504     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1505         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1506         decoded_frame_tb   = avctx->time_base;
1507     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1508         decoded_frame->pts = decoded_frame->pkt_pts;
1509         pkt->pts           = AV_NOPTS_VALUE;
1510         decoded_frame_tb   = ist->st->time_base;
1511     } else if (pkt->pts != AV_NOPTS_VALUE) {
1512         decoded_frame->pts = pkt->pts;
1513         pkt->pts           = AV_NOPTS_VALUE;
1514         decoded_frame_tb   = ist->st->time_base;
1515     }else {
1516         decoded_frame->pts = ist->dts;
1517         decoded_frame_tb   = AV_TIME_BASE_Q;
1518     }
1519     if (decoded_frame->pts != AV_NOPTS_VALUE)
1520         decoded_frame->pts = av_rescale_q(decoded_frame->pts,
1521                                           decoded_frame_tb,
1522                                           (AVRational){1, ist->st->codec->sample_rate});
1523     for (i = 0; i < ist->nb_filters; i++)
1524         av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame,
1525                                AV_BUFFERSRC_FLAG_PUSH);
1526
1527     decoded_frame->pts = AV_NOPTS_VALUE;
1528
1529     return ret;
1530 }
1531
1532 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1533 {
1534     AVFrame *decoded_frame;
1535     void *buffer_to_free = NULL;
1536     int i, ret = 0, resample_changed;
1537     int64_t best_effort_timestamp;
1538     AVRational *frame_sample_aspect;
1539     float quality;
1540
1541     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1542         return AVERROR(ENOMEM);
1543     else
1544         avcodec_get_frame_defaults(ist->decoded_frame);
1545     decoded_frame = ist->decoded_frame;
1546     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1547
1548     update_benchmark(NULL);
1549     ret = avcodec_decode_video2(ist->st->codec,
1550                                 decoded_frame, got_output, pkt);
1551     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1552     if (!*got_output || ret < 0) {
1553         if (!pkt->size) {
1554             for (i = 0; i < ist->nb_filters; i++)
1555                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1556         }
1557         return ret;
1558     }
1559
1560     quality = same_quant ? decoded_frame->quality : 0;
1561
1562     if(ist->top_field_first>=0)
1563         decoded_frame->top_field_first = ist->top_field_first;
1564
1565     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1566     if(best_effort_timestamp != AV_NOPTS_VALUE)
1567         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1568
1569     if (debug_ts) {
1570         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1571                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1572                 ist->st->index, av_ts2str(decoded_frame->pts),
1573                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1574                 best_effort_timestamp,
1575                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1576                 decoded_frame->key_frame, decoded_frame->pict_type);
1577     }
1578
1579     pkt->size = 0;
1580     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1581
1582     rate_emu_sleep(ist);
1583
1584     if (ist->st->sample_aspect_ratio.num)
1585         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1586
1587     resample_changed = ist->resample_width   != decoded_frame->width  ||
1588                        ist->resample_height  != decoded_frame->height ||
1589                        ist->resample_pix_fmt != decoded_frame->format;
1590     if (resample_changed) {
1591         av_log(NULL, AV_LOG_INFO,
1592                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1593                ist->file_index, ist->st->index,
1594                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1595                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1596
1597         ist->resample_width   = decoded_frame->width;
1598         ist->resample_height  = decoded_frame->height;
1599         ist->resample_pix_fmt = decoded_frame->format;
1600
1601         for (i = 0; i < nb_filtergraphs; i++)
1602             if (ist_in_filtergraph(filtergraphs[i], ist) &&
1603                 configure_filtergraph(filtergraphs[i]) < 0) {
1604                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1605                 exit_program(1);
1606             }
1607     }
1608
1609     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1610     for (i = 0; i < ist->nb_filters; i++) {
1611         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
1612                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
1613                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
1614         // XXX what an ugly hack
1615         if (ist->filters[i]->graph->nb_outputs == 1)
1616             ist->filters[i]->graph->outputs[0]->ost->last_quality = quality;
1617
1618         if (!frame_sample_aspect->num)
1619             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1620         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
1621             FrameBuffer      *buf = decoded_frame->opaque;
1622             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1623                                         decoded_frame->data, decoded_frame->linesize,
1624                                         AV_PERM_READ | AV_PERM_PRESERVE,
1625                                         ist->st->codec->width, ist->st->codec->height,
1626                                         ist->st->codec->pix_fmt);
1627
1628             avfilter_copy_frame_props(fb, decoded_frame);
1629             fb->buf->priv           = buf;
1630             fb->buf->free           = filter_release_buffer;
1631
1632             av_assert0(buf->refcount>0);
1633             buf->refcount++;
1634             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
1635                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
1636                                  AV_BUFFERSRC_FLAG_NO_COPY |
1637                                  AV_BUFFERSRC_FLAG_PUSH);
1638         } else
1639         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, AV_BUFFERSRC_FLAG_PUSH)<0) {
1640             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
1641             exit_program(1);
1642         }
1643
1644     }
1645
1646     av_free(buffer_to_free);
1647     return ret;
1648 }
1649
1650 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1651 {
1652     AVSubtitle subtitle;
1653     int64_t pts = pkt->pts;
1654     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1655                                           &subtitle, got_output, pkt);
1656     if (ret < 0 || !*got_output) {
1657         if (!pkt->size)
1658             sub2video_flush(ist);
1659         return ret;
1660     }
1661
1662     if (ist->fix_sub_duration) {
1663         if (ist->prev_sub.got_output) {
1664             int end = av_rescale_q(pts - ist->prev_sub.pts, ist->st->time_base,
1665                                    (AVRational){ 1, 1000 });
1666             if (end < ist->prev_sub.subtitle.end_display_time) {
1667                 av_log(ist->st->codec, AV_LOG_DEBUG,
1668                        "Subtitle duration reduced from %d to %d\n",
1669                        ist->prev_sub.subtitle.end_display_time, end);
1670                 ist->prev_sub.subtitle.end_display_time = end;
1671             }
1672         }
1673         FFSWAP(int64_t,    pts,         ist->prev_sub.pts);
1674         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1675         FFSWAP(int,        ret,         ist->prev_sub.ret);
1676         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1677     }
1678
1679     if (!*got_output || !subtitle.num_rects)
1680         return ret;
1681
1682     rate_emu_sleep(ist);
1683
1684     sub2video_update(ist, &subtitle, pkt->pts);
1685
1686     for (i = 0; i < nb_output_streams; i++) {
1687         OutputStream *ost = output_streams[i];
1688
1689         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1690             continue;
1691
1692         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pts);
1693     }
1694
1695     avsubtitle_free(&subtitle);
1696     return ret;
1697 }
1698
1699 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1700 static int output_packet(InputStream *ist, const AVPacket *pkt)
1701 {
1702     int ret = 0, i;
1703     int got_output;
1704
1705     AVPacket avpkt;
1706     if (!ist->saw_first_ts) {
1707         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;
1708         ist->pts = 0;
1709         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1710             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1711             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1712         }
1713         ist->saw_first_ts = 1;
1714     }
1715
1716     if (ist->next_dts == AV_NOPTS_VALUE)
1717         ist->next_dts = ist->dts;
1718     if (ist->next_pts == AV_NOPTS_VALUE)
1719         ist->next_pts = ist->pts;
1720
1721     if (pkt == NULL) {
1722         /* EOF handling */
1723         av_init_packet(&avpkt);
1724         avpkt.data = NULL;
1725         avpkt.size = 0;
1726         goto handle_eof;
1727     } else {
1728         avpkt = *pkt;
1729     }
1730
1731     if (pkt->dts != AV_NOPTS_VALUE) {
1732         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1733         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1734             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1735     }
1736
1737     // while we have more to decode or while the decoder did output something on EOF
1738     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1739         int duration;
1740     handle_eof:
1741
1742         ist->pts = ist->next_pts;
1743         ist->dts = ist->next_dts;
1744
1745         if (avpkt.size && avpkt.size != pkt->size) {
1746             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1747                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1748             ist->showed_multi_packet_warning = 1;
1749         }
1750
1751         switch (ist->st->codec->codec_type) {
1752         case AVMEDIA_TYPE_AUDIO:
1753             ret = decode_audio    (ist, &avpkt, &got_output);
1754             break;
1755         case AVMEDIA_TYPE_VIDEO:
1756             ret = decode_video    (ist, &avpkt, &got_output);
1757             if (avpkt.duration) {
1758                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1759             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1760                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1761                 duration = ((int64_t)AV_TIME_BASE *
1762                                 ist->st->codec->time_base.num * ticks) /
1763                                 ist->st->codec->time_base.den;
1764             } else
1765                 duration = 0;
1766
1767             if(ist->dts != AV_NOPTS_VALUE && duration) {
1768                 ist->next_dts += duration;
1769             }else
1770                 ist->next_dts = AV_NOPTS_VALUE;
1771
1772             if (got_output)
1773                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1774             break;
1775         case AVMEDIA_TYPE_SUBTITLE:
1776             ret = transcode_subtitles(ist, &avpkt, &got_output);
1777             break;
1778         default:
1779             return -1;
1780         }
1781
1782         if (ret < 0)
1783             return ret;
1784
1785         avpkt.dts=
1786         avpkt.pts= AV_NOPTS_VALUE;
1787
1788         // touch data and size only if not EOF
1789         if (pkt) {
1790             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1791                 ret = avpkt.size;
1792             avpkt.data += ret;
1793             avpkt.size -= ret;
1794         }
1795         if (!got_output) {
1796             continue;
1797         }
1798     }
1799
1800     /* handle stream copy */
1801     if (!ist->decoding_needed) {
1802         rate_emu_sleep(ist);
1803         ist->dts = ist->next_dts;
1804         switch (ist->st->codec->codec_type) {
1805         case AVMEDIA_TYPE_AUDIO:
1806             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1807                              ist->st->codec->sample_rate;
1808             break;
1809         case AVMEDIA_TYPE_VIDEO:
1810             if (pkt->duration) {
1811                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1812             } else if(ist->st->codec->time_base.num != 0) {
1813                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1814                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1815                                   ist->st->codec->time_base.num * ticks) /
1816                                   ist->st->codec->time_base.den;
1817             }
1818             break;
1819         }
1820         ist->pts = ist->dts;
1821         ist->next_pts = ist->next_dts;
1822     }
1823     for (i = 0; pkt && i < nb_output_streams; i++) {
1824         OutputStream *ost = output_streams[i];
1825
1826         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1827             continue;
1828
1829         do_streamcopy(ist, ost, pkt);
1830     }
1831
1832     return 0;
1833 }
1834
1835 static void print_sdp(void)
1836 {
1837     char sdp[2048];
1838     int i;
1839     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1840
1841     if (!avc)
1842         exit_program(1);
1843     for (i = 0; i < nb_output_files; i++)
1844         avc[i] = output_files[i]->ctx;
1845
1846     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1847     printf("SDP:\n%s\n", sdp);
1848     fflush(stdout);
1849     av_freep(&avc);
1850 }
1851
1852 static int init_input_stream(int ist_index, char *error, int error_len)
1853 {
1854     InputStream *ist = input_streams[ist_index];
1855
1856     if (ist->decoding_needed) {
1857         AVCodec *codec = ist->dec;
1858         if (!codec) {
1859             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1860                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1861             return AVERROR(EINVAL);
1862         }
1863
1864         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
1865         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
1866             ist->st->codec->get_buffer     = codec_get_buffer;
1867             ist->st->codec->release_buffer = codec_release_buffer;
1868             ist->st->codec->opaque         = &ist->buffer_pool;
1869         }
1870
1871         if (!av_dict_get(ist->opts, "threads", NULL, 0))
1872             av_dict_set(&ist->opts, "threads", "auto", 0);
1873         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
1874             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1875                     ist->file_index, ist->st->index);
1876             return AVERROR(EINVAL);
1877         }
1878         assert_codec_experimental(ist->st->codec, 0);
1879         assert_avoptions(ist->opts);
1880     }
1881
1882     ist->next_pts = AV_NOPTS_VALUE;
1883     ist->next_dts = AV_NOPTS_VALUE;
1884     ist->is_start = 1;
1885
1886     return 0;
1887 }
1888
1889 static InputStream *get_input_stream(OutputStream *ost)
1890 {
1891     if (ost->source_index >= 0)
1892         return input_streams[ost->source_index];
1893     return NULL;
1894 }
1895
1896 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1897                                     AVCodecContext *avctx)
1898 {
1899     char *p;
1900     int n = 1, i;
1901     int64_t t;
1902
1903     for (p = kf; *p; p++)
1904         if (*p == ',')
1905             n++;
1906     ost->forced_kf_count = n;
1907     ost->forced_kf_pts   = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1908     if (!ost->forced_kf_pts) {
1909         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1910         exit_program(1);
1911     }
1912
1913     p = kf;
1914     for (i = 0; i < n; i++) {
1915         char *next = strchr(p, ',');
1916
1917         if (next)
1918             *next++ = 0;
1919
1920         t = parse_time_or_die("force_key_frames", p, 1);
1921         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1922
1923         p = next;
1924     }
1925 }
1926
1927 static void report_new_stream(int input_index, AVPacket *pkt)
1928 {
1929     InputFile *file = input_files[input_index];
1930     AVStream *st = file->ctx->streams[pkt->stream_index];
1931
1932     if (pkt->stream_index < file->nb_streams_warn)
1933         return;
1934     av_log(file->ctx, AV_LOG_WARNING,
1935            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
1936            av_get_media_type_string(st->codec->codec_type),
1937            input_index, pkt->stream_index,
1938            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
1939     file->nb_streams_warn = pkt->stream_index + 1;
1940 }
1941
1942 static int transcode_init(void)
1943 {
1944     int ret = 0, i, j, k;
1945     AVFormatContext *oc;
1946     AVCodecContext *codec;
1947     OutputStream *ost;
1948     InputStream *ist;
1949     char error[1024];
1950     int want_sdp = 1;
1951
1952     /* init framerate emulation */
1953     for (i = 0; i < nb_input_files; i++) {
1954         InputFile *ifile = input_files[i];
1955         if (ifile->rate_emu)
1956             for (j = 0; j < ifile->nb_streams; j++)
1957                 input_streams[j + ifile->ist_index]->start = av_gettime();
1958     }
1959
1960     /* output stream init */
1961     for (i = 0; i < nb_output_files; i++) {
1962         oc = output_files[i]->ctx;
1963         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
1964             av_dump_format(oc, i, oc->filename, 1);
1965             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
1966             return AVERROR(EINVAL);
1967         }
1968     }
1969
1970     /* init complex filtergraphs */
1971     for (i = 0; i < nb_filtergraphs; i++)
1972         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
1973             return ret;
1974
1975     /* for each output stream, we compute the right encoding parameters */
1976     for (i = 0; i < nb_output_streams; i++) {
1977         AVCodecContext *icodec = NULL;
1978         ost = output_streams[i];
1979         oc  = output_files[ost->file_index]->ctx;
1980         ist = get_input_stream(ost);
1981
1982         if (ost->attachment_filename)
1983             continue;
1984
1985         codec  = ost->st->codec;
1986
1987         if (ist) {
1988             icodec = ist->st->codec;
1989
1990             ost->st->disposition          = ist->st->disposition;
1991             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
1992             codec->chroma_sample_location = icodec->chroma_sample_location;
1993         }
1994
1995         if (ost->stream_copy) {
1996             uint64_t extra_size;
1997
1998             av_assert0(ist && !ost->filter);
1999
2000             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2001
2002             if (extra_size > INT_MAX) {
2003                 return AVERROR(EINVAL);
2004             }
2005
2006             /* if stream_copy is selected, no need to decode or encode */
2007             codec->codec_id   = icodec->codec_id;
2008             codec->codec_type = icodec->codec_type;
2009
2010             if (!codec->codec_tag) {
2011                 if (!oc->oformat->codec_tag ||
2012                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2013                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2014                     codec->codec_tag = icodec->codec_tag;
2015             }
2016
2017             codec->bit_rate       = icodec->bit_rate;
2018             codec->rc_max_rate    = icodec->rc_max_rate;
2019             codec->rc_buffer_size = icodec->rc_buffer_size;
2020             codec->field_order    = icodec->field_order;
2021             codec->extradata      = av_mallocz(extra_size);
2022             if (!codec->extradata) {
2023                 return AVERROR(ENOMEM);
2024             }
2025             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2026             codec->extradata_size= icodec->extradata_size;
2027             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2028
2029             codec->time_base = ist->st->time_base;
2030             /*
2031              * Avi is a special case here because it supports variable fps but
2032              * having the fps and timebase differe significantly adds quite some
2033              * overhead
2034              */
2035             if(!strcmp(oc->oformat->name, "avi")) {
2036                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2037                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2038                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2039                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2040                      || copy_tb==2){
2041                     codec->time_base.num = ist->st->r_frame_rate.den;
2042                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2043                     codec->ticks_per_frame = 2;
2044                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2045                                  && av_q2d(ist->st->time_base) < 1.0/500
2046                     || copy_tb==0){
2047                     codec->time_base = icodec->time_base;
2048                     codec->time_base.num *= icodec->ticks_per_frame;
2049                     codec->time_base.den *= 2;
2050                     codec->ticks_per_frame = 2;
2051                 }
2052             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2053                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2054                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2055             ) {
2056                 if(   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2057                                 && av_q2d(ist->st->time_base) < 1.0/500
2058                    || copy_tb==0){
2059                     codec->time_base = icodec->time_base;
2060                     codec->time_base.num *= icodec->ticks_per_frame;
2061                 }
2062             }
2063
2064             if(ost->frame_rate.num)
2065                 codec->time_base = av_inv_q(ost->frame_rate);
2066
2067             av_reduce(&codec->time_base.num, &codec->time_base.den,
2068                         codec->time_base.num, codec->time_base.den, INT_MAX);
2069
2070             switch (codec->codec_type) {
2071             case AVMEDIA_TYPE_AUDIO:
2072                 if (audio_volume != 256) {
2073                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2074                     exit_program(1);
2075                 }
2076                 codec->channel_layout     = icodec->channel_layout;
2077                 codec->sample_rate        = icodec->sample_rate;
2078                 codec->channels           = icodec->channels;
2079                 codec->frame_size         = icodec->frame_size;
2080                 codec->audio_service_type = icodec->audio_service_type;
2081                 codec->block_align        = icodec->block_align;
2082                 if((codec->block_align == 1 || codec->block_align == 1152) && codec->codec_id == AV_CODEC_ID_MP3)
2083                     codec->block_align= 0;
2084                 if(codec->codec_id == AV_CODEC_ID_AC3)
2085                     codec->block_align= 0;
2086                 break;
2087             case AVMEDIA_TYPE_VIDEO:
2088                 codec->pix_fmt            = icodec->pix_fmt;
2089                 codec->width              = icodec->width;
2090                 codec->height             = icodec->height;
2091                 codec->has_b_frames       = icodec->has_b_frames;
2092                 if (!codec->sample_aspect_ratio.num) {
2093                     codec->sample_aspect_ratio   =
2094                     ost->st->sample_aspect_ratio =
2095                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2096                         ist->st->codec->sample_aspect_ratio.num ?
2097                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2098                 }
2099                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2100                 break;
2101             case AVMEDIA_TYPE_SUBTITLE:
2102                 codec->width  = icodec->width;
2103                 codec->height = icodec->height;
2104                 break;
2105             case AVMEDIA_TYPE_DATA:
2106             case AVMEDIA_TYPE_ATTACHMENT:
2107                 break;
2108             default:
2109                 abort();
2110             }
2111         } else {
2112             if (!ost->enc)
2113                 ost->enc = avcodec_find_encoder(codec->codec_id);
2114             if (!ost->enc) {
2115                 /* should only happen when a default codec is not present. */
2116                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2117                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2118                 ret = AVERROR(EINVAL);
2119                 goto dump_format;
2120             }
2121
2122             if (ist)
2123                 ist->decoding_needed++;
2124             ost->encoding_needed = 1;
2125
2126             if (!ost->filter &&
2127                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2128                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2129                     FilterGraph *fg;
2130                     fg = init_simple_filtergraph(ist, ost);
2131                     if (configure_filtergraph(fg)) {
2132                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2133                         exit(1);
2134                     }
2135             }
2136
2137             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2138                 if (ost->filter && !ost->frame_rate.num)
2139                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2140                 if (ist && !ost->frame_rate.num)
2141                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2142 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2143                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2144                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2145                     ost->frame_rate = ost->enc->supported_framerates[idx];
2146                 }
2147             }
2148
2149             switch (codec->codec_type) {
2150             case AVMEDIA_TYPE_AUDIO:
2151                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2152                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2153                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2154                 codec->channels       = av_get_channel_layout_nb_channels(codec->channel_layout);
2155                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2156                 break;
2157             case AVMEDIA_TYPE_VIDEO:
2158                 codec->time_base = av_inv_q(ost->frame_rate);
2159                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2160                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2161                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2162                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2163                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2164                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2165                 }
2166                 for (j = 0; j < ost->forced_kf_count; j++)
2167                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2168                                                          AV_TIME_BASE_Q,
2169                                                          codec->time_base);
2170
2171                 codec->width  = ost->filter->filter->inputs[0]->w;
2172                 codec->height = ost->filter->filter->inputs[0]->h;
2173                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2174                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
2175                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
2176                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2177                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2178
2179                 if (!icodec ||
2180                     codec->width   != icodec->width  ||
2181                     codec->height  != icodec->height ||
2182                     codec->pix_fmt != icodec->pix_fmt) {
2183                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2184                 }
2185
2186                 if (ost->forced_keyframes)
2187                     parse_forced_key_frames(ost->forced_keyframes, ost,
2188                                             ost->st->codec);
2189                 break;
2190             case AVMEDIA_TYPE_SUBTITLE:
2191                 codec->time_base = (AVRational){1, 1000};
2192                 if (!codec->width) {
2193                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2194                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2195                 }
2196                 break;
2197             default:
2198                 abort();
2199                 break;
2200             }
2201             /* two pass mode */
2202             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2203                 char logfilename[1024];
2204                 FILE *f;
2205
2206                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2207                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2208                          i);
2209                 if (!strcmp(ost->enc->name, "libx264")) {
2210                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2211                 } else {
2212                     if (codec->flags & CODEC_FLAG_PASS2) {
2213                         char  *logbuffer;
2214                         size_t logbuffer_size;
2215                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2216                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2217                                    logfilename);
2218                             exit_program(1);
2219                         }
2220                         codec->stats_in = logbuffer;
2221                     }
2222                     if (codec->flags & CODEC_FLAG_PASS1) {
2223                         f = fopen(logfilename, "wb");
2224                         if (!f) {
2225                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2226                                 logfilename, strerror(errno));
2227                             exit_program(1);
2228                         }
2229                         ost->logfile = f;
2230                     }
2231                 }
2232             }
2233         }
2234     }
2235
2236     /* open each encoder */
2237     for (i = 0; i < nb_output_streams; i++) {
2238         ost = output_streams[i];
2239         if (ost->encoding_needed) {
2240             AVCodec      *codec = ost->enc;
2241             AVCodecContext *dec = NULL;
2242
2243             if ((ist = get_input_stream(ost)))
2244                 dec = ist->st->codec;
2245             if (dec && dec->subtitle_header) {
2246                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2247                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2248                 if (!ost->st->codec->subtitle_header) {
2249                     ret = AVERROR(ENOMEM);
2250                     goto dump_format;
2251                 }
2252                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2253                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2254             }
2255             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2256                 av_dict_set(&ost->opts, "threads", "auto", 0);
2257             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2258                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2259                         ost->file_index, ost->index);
2260                 ret = AVERROR(EINVAL);
2261                 goto dump_format;
2262             }
2263             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2264                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2265                 av_buffersink_set_frame_size(ost->filter->filter,
2266                                              ost->st->codec->frame_size);
2267             assert_codec_experimental(ost->st->codec, 1);
2268             assert_avoptions(ost->opts);
2269             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2270                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2271                                              " It takes bits/s as argument, not kbits/s\n");
2272             extra_size += ost->st->codec->extradata_size;
2273
2274             if (ost->st->codec->me_threshold)
2275                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
2276         }
2277     }
2278
2279     /* init input streams */
2280     for (i = 0; i < nb_input_streams; i++)
2281         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
2282             goto dump_format;
2283
2284     /* discard unused programs */
2285     for (i = 0; i < nb_input_files; i++) {
2286         InputFile *ifile = input_files[i];
2287         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2288             AVProgram *p = ifile->ctx->programs[j];
2289             int discard  = AVDISCARD_ALL;
2290
2291             for (k = 0; k < p->nb_stream_indexes; k++)
2292                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2293                     discard = AVDISCARD_DEFAULT;
2294                     break;
2295                 }
2296             p->discard = discard;
2297         }
2298     }
2299
2300     /* open files and write file headers */
2301     for (i = 0; i < nb_output_files; i++) {
2302         oc = output_files[i]->ctx;
2303         oc->interrupt_callback = int_cb;
2304         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2305             char errbuf[128];
2306             const char *errbuf_ptr = errbuf;
2307             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
2308                 errbuf_ptr = strerror(AVUNERROR(ret));
2309             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
2310             ret = AVERROR(EINVAL);
2311             goto dump_format;
2312         }
2313 //         assert_avoptions(output_files[i]->opts);
2314         if (strcmp(oc->oformat->name, "rtp")) {
2315             want_sdp = 0;
2316         }
2317     }
2318
2319  dump_format:
2320     /* dump the file output parameters - cannot be done before in case
2321        of stream copy */
2322     for (i = 0; i < nb_output_files; i++) {
2323         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2324     }
2325
2326     /* dump the stream mapping */
2327     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2328     for (i = 0; i < nb_input_streams; i++) {
2329         ist = input_streams[i];
2330
2331         for (j = 0; j < ist->nb_filters; j++) {
2332             if (ist->filters[j]->graph->graph_desc) {
2333                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2334                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2335                        ist->filters[j]->name);
2336                 if (nb_filtergraphs > 1)
2337                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2338                 av_log(NULL, AV_LOG_INFO, "\n");
2339             }
2340         }
2341     }
2342
2343     for (i = 0; i < nb_output_streams; i++) {
2344         ost = output_streams[i];
2345
2346         if (ost->attachment_filename) {
2347             /* an attached file */
2348             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2349                    ost->attachment_filename, ost->file_index, ost->index);
2350             continue;
2351         }
2352
2353         if (ost->filter && ost->filter->graph->graph_desc) {
2354             /* output from a complex graph */
2355             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2356             if (nb_filtergraphs > 1)
2357                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2358
2359             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2360                    ost->index, ost->enc ? ost->enc->name : "?");
2361             continue;
2362         }
2363
2364         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2365                input_streams[ost->source_index]->file_index,
2366                input_streams[ost->source_index]->st->index,
2367                ost->file_index,
2368                ost->index);
2369         if (ost->sync_ist != input_streams[ost->source_index])
2370             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2371                    ost->sync_ist->file_index,
2372                    ost->sync_ist->st->index);
2373         if (ost->stream_copy)
2374             av_log(NULL, AV_LOG_INFO, " (copy)");
2375         else
2376             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2377                    input_streams[ost->source_index]->dec->name : "?",
2378                    ost->enc ? ost->enc->name : "?");
2379         av_log(NULL, AV_LOG_INFO, "\n");
2380     }
2381
2382     if (ret) {
2383         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2384         return ret;
2385     }
2386
2387     if (want_sdp) {
2388         print_sdp();
2389     }
2390
2391     return 0;
2392 }
2393
2394 /**
2395  * @return 1 if there are still streams where more output is wanted,
2396  *         0 otherwise
2397  */
2398 static int need_output(void)
2399 {
2400     int i;
2401
2402     for (i = 0; i < nb_output_streams; i++) {
2403         OutputStream *ost    = output_streams[i];
2404         OutputFile *of       = output_files[ost->file_index];
2405         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2406
2407         if (ost->finished ||
2408             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2409             continue;
2410         if (ost->frame_number >= ost->max_frames) {
2411             int j;
2412             for (j = 0; j < of->ctx->nb_streams; j++)
2413                 output_streams[of->ost_index + j]->finished = 1;
2414             continue;
2415         }
2416
2417         return 1;
2418     }
2419
2420     return 0;
2421 }
2422
2423 /**
2424  * Select the output stream to process.
2425  *
2426  * @return  selected output stream, or NULL if none available
2427  */
2428 static OutputStream *choose_output(void)
2429 {
2430     int i;
2431     int64_t opts_min = INT64_MAX;
2432     OutputStream *ost_min = NULL;
2433
2434     for (i = 0; i < nb_output_streams; i++) {
2435         OutputStream *ost = output_streams[i];
2436         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2437                                     AV_TIME_BASE_Q);
2438         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2439             opts_min = opts;
2440             ost_min  = ost;
2441         }
2442     }
2443     return ost_min;
2444 }
2445
2446 static int check_keyboard_interaction(int64_t cur_time)
2447 {
2448     int i, ret, key;
2449     static int64_t last_time;
2450     if (received_nb_signals)
2451         return AVERROR_EXIT;
2452     /* read_key() returns 0 on EOF */
2453     if(cur_time - last_time >= 100000 && !run_as_daemon){
2454         key =  read_key();
2455         last_time = cur_time;
2456     }else
2457         key = -1;
2458     if (key == 'q')
2459         return AVERROR_EXIT;
2460     if (key == '+') av_log_set_level(av_log_get_level()+10);
2461     if (key == '-') av_log_set_level(av_log_get_level()-10);
2462     if (key == 's') qp_hist     ^= 1;
2463     if (key == 'h'){
2464         if (do_hex_dump){
2465             do_hex_dump = do_pkt_dump = 0;
2466         } else if(do_pkt_dump){
2467             do_hex_dump = 1;
2468         } else
2469             do_pkt_dump = 1;
2470         av_log_set_level(AV_LOG_DEBUG);
2471     }
2472     if (key == 'c' || key == 'C'){
2473         char buf[4096], target[64], command[256], arg[256] = {0};
2474         double time;
2475         int k, n = 0;
2476         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2477         i = 0;
2478         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2479             if (k > 0)
2480                 buf[i++] = k;
2481         buf[i] = 0;
2482         if (k > 0 &&
2483             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2484             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2485                    target, time, command, arg);
2486             for (i = 0; i < nb_filtergraphs; i++) {
2487                 FilterGraph *fg = filtergraphs[i];
2488                 if (fg->graph) {
2489                     if (time < 0) {
2490                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2491                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2492                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2493                     } else {
2494                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2495                     }
2496                 }
2497             }
2498         } else {
2499             av_log(NULL, AV_LOG_ERROR,
2500                    "Parse error, at least 3 arguments were expected, "
2501                    "only %d given in string '%s'\n", n, buf);
2502         }
2503     }
2504     if (key == 'd' || key == 'D'){
2505         int debug=0;
2506         if(key == 'D') {
2507             debug = input_streams[0]->st->codec->debug<<1;
2508             if(!debug) debug = 1;
2509             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2510                 debug += debug;
2511         }else
2512             if(scanf("%d", &debug)!=1)
2513                 fprintf(stderr,"error parsing debug value\n");
2514         for(i=0;i<nb_input_streams;i++) {
2515             input_streams[i]->st->codec->debug = debug;
2516         }
2517         for(i=0;i<nb_output_streams;i++) {
2518             OutputStream *ost = output_streams[i];
2519             ost->st->codec->debug = debug;
2520         }
2521         if(debug) av_log_set_level(AV_LOG_DEBUG);
2522         fprintf(stderr,"debug=%d\n", debug);
2523     }
2524     if (key == '?'){
2525         fprintf(stderr, "key    function\n"
2526                         "?      show this help\n"
2527                         "+      increase verbosity\n"
2528                         "-      decrease verbosity\n"
2529                         "c      Send command to filtergraph\n"
2530                         "D      cycle through available debug modes\n"
2531                         "h      dump packets/hex press to cycle through the 3 states\n"
2532                         "q      quit\n"
2533                         "s      Show QP histogram\n"
2534         );
2535     }
2536     return 0;
2537 }
2538
2539 #if HAVE_PTHREADS
2540 static void *input_thread(void *arg)
2541 {
2542     InputFile *f = arg;
2543     int ret = 0;
2544
2545     while (!transcoding_finished && ret >= 0) {
2546         AVPacket pkt;
2547         ret = av_read_frame(f->ctx, &pkt);
2548
2549         if (ret == AVERROR(EAGAIN)) {
2550             av_usleep(10000);
2551             ret = 0;
2552             continue;
2553         } else if (ret < 0)
2554             break;
2555
2556         pthread_mutex_lock(&f->fifo_lock);
2557         while (!av_fifo_space(f->fifo))
2558             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2559
2560         av_dup_packet(&pkt);
2561         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2562
2563         pthread_mutex_unlock(&f->fifo_lock);
2564     }
2565
2566     f->finished = 1;
2567     return NULL;
2568 }
2569
2570 static void free_input_threads(void)
2571 {
2572     int i;
2573
2574     if (nb_input_files == 1)
2575         return;
2576
2577     transcoding_finished = 1;
2578
2579     for (i = 0; i < nb_input_files; i++) {
2580         InputFile *f = input_files[i];
2581         AVPacket pkt;
2582
2583         if (!f->fifo || f->joined)
2584             continue;
2585
2586         pthread_mutex_lock(&f->fifo_lock);
2587         while (av_fifo_size(f->fifo)) {
2588             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2589             av_free_packet(&pkt);
2590         }
2591         pthread_cond_signal(&f->fifo_cond);
2592         pthread_mutex_unlock(&f->fifo_lock);
2593
2594         pthread_join(f->thread, NULL);
2595         f->joined = 1;
2596
2597         while (av_fifo_size(f->fifo)) {
2598             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2599             av_free_packet(&pkt);
2600         }
2601         av_fifo_free(f->fifo);
2602     }
2603 }
2604
2605 static int init_input_threads(void)
2606 {
2607     int i, ret;
2608
2609     if (nb_input_files == 1)
2610         return 0;
2611
2612     for (i = 0; i < nb_input_files; i++) {
2613         InputFile *f = input_files[i];
2614
2615         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2616             return AVERROR(ENOMEM);
2617
2618         pthread_mutex_init(&f->fifo_lock, NULL);
2619         pthread_cond_init (&f->fifo_cond, NULL);
2620
2621         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2622             return AVERROR(ret);
2623     }
2624     return 0;
2625 }
2626
2627 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2628 {
2629     int ret = 0;
2630
2631     pthread_mutex_lock(&f->fifo_lock);
2632
2633     if (av_fifo_size(f->fifo)) {
2634         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2635         pthread_cond_signal(&f->fifo_cond);
2636     } else {
2637         if (f->finished)
2638             ret = AVERROR_EOF;
2639         else
2640             ret = AVERROR(EAGAIN);
2641     }
2642
2643     pthread_mutex_unlock(&f->fifo_lock);
2644
2645     return ret;
2646 }
2647 #endif
2648
2649 static int get_input_packet(InputFile *f, AVPacket *pkt)
2650 {
2651 #if HAVE_PTHREADS
2652     if (nb_input_files > 1)
2653         return get_input_packet_mt(f, pkt);
2654 #endif
2655     return av_read_frame(f->ctx, pkt);
2656 }
2657
2658 static int got_eagain(void)
2659 {
2660     int i;
2661     for (i = 0; i < nb_output_streams; i++)
2662         if (output_streams[i]->unavailable)
2663             return 1;
2664     return 0;
2665 }
2666
2667 static void reset_eagain(void)
2668 {
2669     int i;
2670     for (i = 0; i < nb_input_files; i++)
2671         input_files[i]->eagain = 0;
2672     for (i = 0; i < nb_output_streams; i++)
2673         output_streams[i]->unavailable = 0;
2674 }
2675
2676 /**
2677  * @return
2678  * - 0 -- one packet was read and processed
2679  * - AVERROR(EAGAIN) -- no packets were available for selected file,
2680  *   this function should be called again
2681  * - AVERROR_EOF -- this function should not be called again
2682  */
2683 static int process_input(int file_index)
2684 {
2685     InputFile *ifile = input_files[file_index];
2686     AVFormatContext *is;
2687     InputStream *ist;
2688     AVPacket pkt;
2689     int ret, i, j;
2690
2691     is  = ifile->ctx;
2692     ret = get_input_packet(ifile, &pkt);
2693
2694     if (ret == AVERROR(EAGAIN)) {
2695         ifile->eagain = 1;
2696         return ret;
2697     }
2698     if (ret < 0) {
2699         if (ret != AVERROR_EOF) {
2700             print_error(is->filename, ret);
2701             if (exit_on_error)
2702                 exit_program(1);
2703         }
2704         ifile->eof_reached = 1;
2705
2706         for (i = 0; i < ifile->nb_streams; i++) {
2707             ist = input_streams[ifile->ist_index + i];
2708             if (ist->decoding_needed)
2709                 output_packet(ist, NULL);
2710
2711             /* mark all outputs that don't go through lavfi as finished */
2712             for (j = 0; j < nb_output_streams; j++) {
2713                 OutputStream *ost = output_streams[j];
2714
2715                 if (ost->source_index == ifile->ist_index + i &&
2716                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2717                     close_output_stream(ost);
2718             }
2719         }
2720
2721         return AVERROR(EAGAIN);
2722     }
2723
2724     reset_eagain();
2725
2726     if (do_pkt_dump) {
2727         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2728                          is->streams[pkt.stream_index]);
2729     }
2730     /* the following test is needed in case new streams appear
2731        dynamically in stream : we ignore them */
2732     if (pkt.stream_index >= ifile->nb_streams) {
2733         report_new_stream(file_index, &pkt);
2734         goto discard_packet;
2735     }
2736
2737     ist = input_streams[ifile->ist_index + pkt.stream_index];
2738     if (ist->discard)
2739         goto discard_packet;
2740
2741     if(!ist->wrap_correction_done && input_files[file_index]->ctx->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
2742         uint64_t stime = av_rescale_q(input_files[file_index]->ctx->start_time, AV_TIME_BASE_Q, ist->st->time_base);
2743         uint64_t stime2= stime + (1LL<<ist->st->pts_wrap_bits);
2744         ist->wrap_correction_done = 1;
2745         if(pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime && pkt.dts - stime > stime2 - pkt.dts) {
2746             pkt.dts -= 1LL<<ist->st->pts_wrap_bits;
2747             ist->wrap_correction_done = 0;
2748         }
2749         if(pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime && pkt.pts - stime > stime2 - pkt.pts) {
2750             pkt.pts -= 1LL<<ist->st->pts_wrap_bits;
2751             ist->wrap_correction_done = 0;
2752         }
2753     }
2754
2755     if (pkt.dts != AV_NOPTS_VALUE)
2756         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2757     if (pkt.pts != AV_NOPTS_VALUE)
2758         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2759
2760     if (pkt.pts != AV_NOPTS_VALUE)
2761         pkt.pts *= ist->ts_scale;
2762     if (pkt.dts != AV_NOPTS_VALUE)
2763         pkt.dts *= ist->ts_scale;
2764
2765     if (debug_ts) {
2766         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
2767                 "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",
2768                 ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2769                 av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
2770                 av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
2771                 av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2772                 av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2773                 input_files[ist->file_index]->ts_offset);
2774     }
2775
2776     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2777         !copy_ts) {
2778         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2779         int64_t delta   = pkt_dts - ist->next_dts;
2780         if (is->iformat->flags & AVFMT_TS_DISCONT) {
2781         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2782             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2783                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2784             pkt_dts+1<ist->pts){
2785             ifile->ts_offset -= delta;
2786             av_log(NULL, AV_LOG_DEBUG,
2787                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2788                    delta, ifile->ts_offset);
2789             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2790             if (pkt.pts != AV_NOPTS_VALUE)
2791                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2792         }
2793         } else {
2794             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2795                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2796                ) {
2797                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
2798                 pkt.dts = AV_NOPTS_VALUE;
2799             }
2800             if (pkt.pts != AV_NOPTS_VALUE){
2801                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
2802                 delta   = pkt_pts - ist->next_dts;
2803                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2804                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2805                    ) {
2806                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
2807                     pkt.pts = AV_NOPTS_VALUE;
2808                 }
2809             }
2810         }
2811     }
2812
2813     sub2video_heartbeat(ist, pkt.pts);
2814
2815     ret = output_packet(ist, &pkt);
2816     if (ret < 0) {
2817         char buf[128];
2818         av_strerror(ret, buf, sizeof(buf));
2819         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
2820                 ist->file_index, ist->st->index, buf);
2821         if (exit_on_error)
2822             exit_program(1);
2823     }
2824
2825 discard_packet:
2826     av_free_packet(&pkt);
2827
2828     return 0;
2829 }
2830
2831 /**
2832  * Perform a step of transcoding for the specified filter graph.
2833  *
2834  * @param[in]  graph     filter graph to consider
2835  * @param[out] best_ist  input stream where a frame would allow to continue
2836  * @return  0 for success, <0 for error
2837  */
2838 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
2839 {
2840     int i, ret;
2841     int nb_requests, nb_requests_max = 0;
2842     InputFilter *ifilter;
2843     InputStream *ist;
2844
2845     *best_ist = NULL;
2846     ret = avfilter_graph_request_oldest(graph->graph);
2847     if (ret >= 0)
2848         return reap_filters();
2849
2850     if (ret == AVERROR_EOF) {
2851         ret = reap_filters();
2852         for (i = 0; i < graph->nb_outputs; i++)
2853             close_output_stream(graph->outputs[i]->ost);
2854         return ret;
2855     }
2856     if (ret != AVERROR(EAGAIN))
2857         return ret;
2858
2859     for (i = 0; i < graph->nb_inputs; i++) {
2860         ifilter = graph->inputs[i];
2861         ist = ifilter->ist;
2862         if (input_files[ist->file_index]->eagain ||
2863             input_files[ist->file_index]->eof_reached)
2864             continue;
2865         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
2866         if (nb_requests > nb_requests_max) {
2867             nb_requests_max = nb_requests;
2868             *best_ist = ist;
2869         }
2870     }
2871
2872     if (!*best_ist)
2873         for (i = 0; i < graph->nb_outputs; i++)
2874             graph->outputs[i]->ost->unavailable = 1;
2875
2876     return 0;
2877 }
2878
2879 /**
2880  * Run a single step of transcoding.
2881  *
2882  * @return  0 for success, <0 for error
2883  */
2884 static int transcode_step(void)
2885 {
2886     OutputStream *ost;
2887     InputStream  *ist;
2888     int ret;
2889
2890     ost = choose_output();
2891     if (!ost) {
2892         if (got_eagain()) {
2893             reset_eagain();
2894             av_usleep(10000);
2895             return 0;
2896         }
2897         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
2898         return AVERROR_EOF;
2899     }
2900
2901     if (ost->filter) {
2902         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
2903             return ret;
2904         if (!ist)
2905             return 0;
2906     } else {
2907         av_assert0(ost->source_index >= 0);
2908         ist = input_streams[ost->source_index];
2909     }
2910
2911     ret = process_input(ist->file_index);
2912     if (ret == AVERROR(EAGAIN)) {
2913         if (input_files[ist->file_index]->eagain)
2914             ost->unavailable = 1;
2915         return 0;
2916     }
2917     if (ret < 0)
2918         return ret == AVERROR_EOF ? 0 : ret;
2919
2920     return reap_filters();
2921 }
2922
2923 /*
2924  * The following code is the main loop of the file converter
2925  */
2926 static int transcode(void)
2927 {
2928     int ret, i;
2929     AVFormatContext *os;
2930     OutputStream *ost;
2931     InputStream *ist;
2932     int64_t timer_start;
2933
2934     ret = transcode_init();
2935     if (ret < 0)
2936         goto fail;
2937
2938     if (stdin_interaction) {
2939         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
2940     }
2941
2942     timer_start = av_gettime();
2943
2944 #if HAVE_PTHREADS
2945     if ((ret = init_input_threads()) < 0)
2946         goto fail;
2947 #endif
2948
2949     while (!received_sigterm) {
2950         int64_t cur_time= av_gettime();
2951
2952         /* if 'q' pressed, exits */
2953         if (stdin_interaction)
2954             if (check_keyboard_interaction(cur_time) < 0)
2955                 break;
2956
2957         /* check if there's any stream where output is still needed */
2958         if (!need_output()) {
2959             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
2960             break;
2961         }
2962
2963         ret = transcode_step();
2964         if (ret < 0) {
2965             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
2966                 continue;
2967
2968             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
2969             break;
2970         }
2971
2972         /* dump report by using the output first video and audio streams */
2973         print_report(0, timer_start, cur_time);
2974     }
2975 #if HAVE_PTHREADS
2976     free_input_threads();
2977 #endif
2978
2979     /* at the end of stream, we must flush the decoder buffers */
2980     for (i = 0; i < nb_input_streams; i++) {
2981         ist = input_streams[i];
2982         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
2983             output_packet(ist, NULL);
2984         }
2985     }
2986     flush_encoders();
2987
2988     term_exit();
2989
2990     /* write the trailer if needed and close file */
2991     for (i = 0; i < nb_output_files; i++) {
2992         os = output_files[i]->ctx;
2993         av_write_trailer(os);
2994     }
2995
2996     /* dump report by using the first video and audio streams */
2997     print_report(1, timer_start, av_gettime());
2998
2999     /* close each encoder */
3000     for (i = 0; i < nb_output_streams; i++) {
3001         ost = output_streams[i];
3002         if (ost->encoding_needed) {
3003             av_freep(&ost->st->codec->stats_in);
3004             avcodec_close(ost->st->codec);
3005         }
3006     }
3007
3008     /* close each decoder */
3009     for (i = 0; i < nb_input_streams; i++) {
3010         ist = input_streams[i];
3011         if (ist->decoding_needed) {
3012             avcodec_close(ist->st->codec);
3013         }
3014     }
3015
3016     /* finished ! */
3017     ret = 0;
3018
3019  fail:
3020 #if HAVE_PTHREADS
3021     free_input_threads();
3022 #endif
3023
3024     if (output_streams) {
3025         for (i = 0; i < nb_output_streams; i++) {
3026             ost = output_streams[i];
3027             if (ost) {
3028                 if (ost->stream_copy)
3029                     av_freep(&ost->st->codec->extradata);
3030                 if (ost->logfile) {
3031                     fclose(ost->logfile);
3032                     ost->logfile = NULL;
3033                 }
3034                 av_freep(&ost->st->codec->subtitle_header);
3035                 av_free(ost->forced_kf_pts);
3036                 av_dict_free(&ost->opts);
3037             }
3038         }
3039     }
3040     return ret;
3041 }
3042
3043
3044 static int64_t getutime(void)
3045 {
3046 #if HAVE_GETRUSAGE
3047     struct rusage rusage;
3048
3049     getrusage(RUSAGE_SELF, &rusage);
3050     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3051 #elif HAVE_GETPROCESSTIMES
3052     HANDLE proc;
3053     FILETIME c, e, k, u;
3054     proc = GetCurrentProcess();
3055     GetProcessTimes(proc, &c, &e, &k, &u);
3056     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3057 #else
3058     return av_gettime();
3059 #endif
3060 }
3061
3062 static int64_t getmaxrss(void)
3063 {
3064 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3065     struct rusage rusage;
3066     getrusage(RUSAGE_SELF, &rusage);
3067     return (int64_t)rusage.ru_maxrss * 1024;
3068 #elif HAVE_GETPROCESSMEMORYINFO
3069     HANDLE proc;
3070     PROCESS_MEMORY_COUNTERS memcounters;
3071     proc = GetCurrentProcess();
3072     memcounters.cb = sizeof(memcounters);
3073     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3074     return memcounters.PeakPagefileUsage;
3075 #else
3076     return 0;
3077 #endif
3078 }
3079
3080 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3081 {
3082 }
3083
3084 static void parse_cpuflags(int argc, char **argv, const OptionDef *options)
3085 {
3086     int idx = locate_option(argc, argv, options, "cpuflags");
3087     if (idx && argv[idx + 1])
3088         opt_cpuflags("cpuflags", argv[idx + 1]);
3089 }
3090
3091 int main(int argc, char **argv)
3092 {
3093     OptionsContext o = { 0 };
3094     int64_t ti;
3095
3096     reset_options(&o, 0);
3097
3098     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3099     parse_loglevel(argc, argv, options);
3100
3101     if(argc>1 && !strcmp(argv[1], "-d")){
3102         run_as_daemon=1;
3103         av_log_set_callback(log_callback_null);
3104         argc--;
3105         argv++;
3106     }
3107
3108     avcodec_register_all();
3109 #if CONFIG_AVDEVICE
3110     avdevice_register_all();
3111 #endif
3112     avfilter_register_all();
3113     av_register_all();
3114     avformat_network_init();
3115
3116     show_banner(argc, argv, options);
3117
3118     term_init();
3119
3120     parse_cpuflags(argc, argv, options);
3121
3122     /* parse options */
3123     parse_options(&o, argc, argv, options, opt_output_file);
3124
3125     if (nb_output_files <= 0 && nb_input_files == 0) {
3126         show_usage();
3127         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3128         exit_program(1);
3129     }
3130
3131     /* file converter / grab */
3132     if (nb_output_files <= 0) {
3133         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3134         exit_program(1);
3135     }
3136
3137 //     if (nb_input_files == 0) {
3138 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3139 //         exit_program(1);
3140 //     }
3141
3142     current_time = ti = getutime();
3143     if (transcode() < 0)
3144         exit_program(1);
3145     ti = getutime() - ti;
3146     if (do_benchmark) {
3147         int maxrss = getmaxrss() / 1024;
3148         printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss);
3149     }
3150
3151     exit_program(0);
3152     return 0;
3153 }