ffmpeg: Clip invalid video timestamps like audio instead of failing hard.
[ffmpeg.git] / ffmpeg.c
1 /*
2  * Copyright (c) 2000-2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * multimedia converter based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <ctype.h>
28 #include <string.h>
29 #include <math.h>
30 #include <stdlib.h>
31 #include <errno.h>
32 #include <limits.h>
33 #if HAVE_ISATTY
34 #include <unistd.h>
35 #endif
36 #include "libavformat/avformat.h"
37 #include "libavdevice/avdevice.h"
38 #include "libswscale/swscale.h"
39 #include "libswresample/swresample.h"
40 #include "libavutil/opt.h"
41 #include "libavutil/audioconvert.h"
42 #include "libavutil/parseutils.h"
43 #include "libavutil/samplefmt.h"
44 #include "libavutil/colorspace.h"
45 #include "libavutil/fifo.h"
46 #include "libavutil/intreadwrite.h"
47 #include "libavutil/dict.h"
48 #include "libavutil/mathematics.h"
49 #include "libavutil/pixdesc.h"
50 #include "libavutil/avstring.h"
51 #include "libavutil/libm.h"
52 #include "libavutil/imgutils.h"
53 #include "libavutil/timestamp.h"
54 #include "libavutil/bprint.h"
55 #include "libavutil/time.h"
56 #include "libavformat/os_support.h"
57
58 #include "libavformat/ffm.h" // not public API
59
60 # include "libavfilter/avcodec.h"
61 # include "libavfilter/avfilter.h"
62 # include "libavfilter/avfiltergraph.h"
63 # include "libavfilter/buffersrc.h"
64 # include "libavfilter/buffersink.h"
65
66 #if HAVE_SYS_RESOURCE_H
67 #include <sys/types.h>
68 #include <sys/resource.h>
69 #elif HAVE_GETPROCESSTIMES
70 #include <windows.h>
71 #endif
72 #if HAVE_GETPROCESSMEMORYINFO
73 #include <windows.h>
74 #include <psapi.h>
75 #endif
76
77 #if HAVE_SYS_SELECT_H
78 #include <sys/select.h>
79 #endif
80
81 #if HAVE_TERMIOS_H
82 #include <fcntl.h>
83 #include <sys/ioctl.h>
84 #include <sys/time.h>
85 #include <termios.h>
86 #elif HAVE_KBHIT
87 #include <conio.h>
88 #endif
89
90 #if HAVE_PTHREADS
91 #include <pthread.h>
92 #endif
93
94 #include <time.h>
95
96 #include "ffmpeg.h"
97 #include "cmdutils.h"
98
99 #include "libavutil/avassert.h"
100
101 const char program_name[] = "ffmpeg";
102 const int program_birth_year = 2000;
103
104 static FILE *vstats_file;
105
106 static void do_video_stats(AVFormatContext *os, OutputStream *ost, int frame_size);
107 static int64_t getutime(void);
108
109 static int run_as_daemon  = 0;
110 static int64_t video_size = 0;
111 static int64_t audio_size = 0;
112 static int64_t subtitle_size = 0;
113 static int64_t extra_size = 0;
114 static int nb_frames_dup = 0;
115 static int nb_frames_drop = 0;
116
117 static int current_time;
118 AVIOContext *progress_avio = NULL;
119
120 static uint8_t *subtitle_out;
121
122 #if HAVE_PTHREADS
123 /* signal to input threads that they should exit; set by the main thread */
124 static int transcoding_finished;
125 #endif
126
127 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
128
129 InputStream **input_streams = NULL;
130 int        nb_input_streams = 0;
131 InputFile   **input_files   = NULL;
132 int        nb_input_files   = 0;
133
134 OutputStream **output_streams = NULL;
135 int         nb_output_streams = 0;
136 OutputFile   **output_files   = NULL;
137 int         nb_output_files   = 0;
138
139 FilterGraph **filtergraphs;
140 int        nb_filtergraphs;
141
142 #if HAVE_TERMIOS_H
143
144 /* init terminal so that we can grab keys */
145 static struct termios oldtty;
146 static int restore_tty;
147 #endif
148
149
150 /* sub2video hack:
151    Convert subtitles to video with alpha to insert them in filter graphs.
152    This is a temporary solution until libavfilter gets real subtitles support.
153  */
154
155
156
157 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
158                                 AVSubtitleRect *r)
159 {
160     uint32_t *pal, *dst2;
161     uint8_t *src, *src2;
162     int x, y;
163
164     if (r->type != SUBTITLE_BITMAP) {
165         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
166         return;
167     }
168     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
169         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
170         return;
171     }
172
173     dst += r->y * dst_linesize + r->x * 4;
174     src = r->pict.data[0];
175     pal = (uint32_t *)r->pict.data[1];
176     for (y = 0; y < r->h; y++) {
177         dst2 = (uint32_t *)dst;
178         src2 = src;
179         for (x = 0; x < r->w; x++)
180             *(dst2++) = pal[*(src2++)];
181         dst += dst_linesize;
182         src += r->pict.linesize[0];
183     }
184 }
185
186 static void sub2video_push_ref(InputStream *ist, int64_t pts)
187 {
188     AVFilterBufferRef *ref = ist->sub2video.ref;
189     int i;
190
191     ist->sub2video.last_pts = ref->pts = pts;
192     for (i = 0; i < ist->nb_filters; i++)
193         av_buffersrc_add_ref(ist->filters[i]->filter,
194                              avfilter_ref_buffer(ref, ~0),
195                              AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
196                              AV_BUFFERSRC_FLAG_NO_COPY);
197 }
198
199 static void sub2video_update(InputStream *ist, AVSubtitle *sub, int64_t pts)
200 {
201     int w = ist->sub2video.w, h = ist->sub2video.h;
202     AVFilterBufferRef *ref = ist->sub2video.ref;
203     int8_t *dst;
204     int     dst_linesize;
205     int i;
206
207     if (!ref)
208         return;
209     dst          = ref->data    [0];
210     dst_linesize = ref->linesize[0];
211     memset(dst, 0, h * dst_linesize);
212     for (i = 0; i < sub->num_rects; i++)
213         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
214     sub2video_push_ref(ist, pts);
215 }
216
217 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
218 {
219     InputFile *infile = input_files[ist->file_index];
220     int i, j, nb_reqs;
221     int64_t pts2;
222
223     /* When a frame is read from a file, examine all sub2video streams in
224        the same file and send the sub2video frame again. Otherwise, decoded
225        video frames could be accumulating in the filter graph while a filter
226        (possibly overlay) is desperately waiting for a subtitle frame. */
227     for (i = 0; i < infile->nb_streams; i++) {
228         InputStream *ist2 = input_streams[infile->ist_index + i];
229         if (!ist2->sub2video.ref)
230             continue;
231         /* subtitles seem to be usually muxed ahead of other streams;
232            if not, substracting a larger time here is necessary */
233         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
234         /* do not send the heartbeat frame if the subtitle is already ahead */
235         if (pts2 <= ist2->sub2video.last_pts)
236             continue;
237         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
238             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
239         if (nb_reqs)
240             sub2video_push_ref(ist2, pts2);
241     }
242 }
243
244 static void sub2video_flush(InputStream *ist)
245 {
246     int i;
247
248     for (i = 0; i < ist->nb_filters; i++)
249         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
250 }
251
252 /* end of sub2video hack */
253
254 void term_exit(void)
255 {
256     av_log(NULL, AV_LOG_QUIET, "%s", "");
257 #if HAVE_TERMIOS_H
258     if(restore_tty)
259         tcsetattr (0, TCSANOW, &oldtty);
260 #endif
261 }
262
263 static volatile int received_sigterm = 0;
264 static volatile int received_nb_signals = 0;
265
266 static void
267 sigterm_handler(int sig)
268 {
269     received_sigterm = sig;
270     received_nb_signals++;
271     term_exit();
272     if(received_nb_signals > 3)
273         exit(123);
274 }
275
276 void term_init(void)
277 {
278 #if HAVE_TERMIOS_H
279     if(!run_as_daemon){
280         struct termios tty;
281         int istty = 1;
282 #if HAVE_ISATTY
283         istty = isatty(0) && isatty(2);
284 #endif
285         if (istty && tcgetattr (0, &tty) == 0) {
286             oldtty = tty;
287             restore_tty = 1;
288             atexit(term_exit);
289
290             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
291                              |INLCR|IGNCR|ICRNL|IXON);
292             tty.c_oflag |= OPOST;
293             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
294             tty.c_cflag &= ~(CSIZE|PARENB);
295             tty.c_cflag |= CS8;
296             tty.c_cc[VMIN] = 1;
297             tty.c_cc[VTIME] = 0;
298
299             tcsetattr (0, TCSANOW, &tty);
300         }
301         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
302     }
303 #endif
304     avformat_network_deinit();
305
306     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
307     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
308 #ifdef SIGXCPU
309     signal(SIGXCPU, sigterm_handler);
310 #endif
311 }
312
313 /* read a key without blocking */
314 static int read_key(void)
315 {
316     unsigned char ch;
317 #if HAVE_TERMIOS_H
318     int n = 1;
319     struct timeval tv;
320     fd_set rfds;
321
322     FD_ZERO(&rfds);
323     FD_SET(0, &rfds);
324     tv.tv_sec = 0;
325     tv.tv_usec = 0;
326     n = select(1, &rfds, NULL, NULL, &tv);
327     if (n > 0) {
328         n = read(0, &ch, 1);
329         if (n == 1)
330             return ch;
331
332         return n;
333     }
334 #elif HAVE_KBHIT
335 #    if HAVE_PEEKNAMEDPIPE
336     static int is_pipe;
337     static HANDLE input_handle;
338     DWORD dw, nchars;
339     if(!input_handle){
340         input_handle = GetStdHandle(STD_INPUT_HANDLE);
341         is_pipe = !GetConsoleMode(input_handle, &dw);
342     }
343
344     if (stdin->_cnt > 0) {
345         read(0, &ch, 1);
346         return ch;
347     }
348     if (is_pipe) {
349         /* When running under a GUI, you will end here. */
350         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
351             return -1;
352         //Read it
353         if(nchars != 0) {
354             read(0, &ch, 1);
355             return ch;
356         }else{
357             return -1;
358         }
359     }
360 #    endif
361     if(kbhit())
362         return(getch());
363 #endif
364     return -1;
365 }
366
367 static int decode_interrupt_cb(void *ctx)
368 {
369     return received_nb_signals > 1;
370 }
371
372 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
373
374 void av_noreturn exit_program(int ret)
375 {
376     int i, j;
377
378     for (i = 0; i < nb_filtergraphs; i++) {
379         avfilter_graph_free(&filtergraphs[i]->graph);
380         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
381             av_freep(&filtergraphs[i]->inputs[j]->name);
382             av_freep(&filtergraphs[i]->inputs[j]);
383         }
384         av_freep(&filtergraphs[i]->inputs);
385         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
386             av_freep(&filtergraphs[i]->outputs[j]->name);
387             av_freep(&filtergraphs[i]->outputs[j]);
388         }
389         av_freep(&filtergraphs[i]->outputs);
390         av_freep(&filtergraphs[i]);
391     }
392     av_freep(&filtergraphs);
393
394     av_freep(&subtitle_out);
395
396     /* close files */
397     for (i = 0; i < nb_output_files; i++) {
398         AVFormatContext *s = output_files[i]->ctx;
399         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
400             avio_close(s->pb);
401         avformat_free_context(s);
402         av_dict_free(&output_files[i]->opts);
403         av_freep(&output_files[i]);
404     }
405     for (i = 0; i < nb_output_streams; i++) {
406         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
407         while (bsfc) {
408             AVBitStreamFilterContext *next = bsfc->next;
409             av_bitstream_filter_close(bsfc);
410             bsfc = next;
411         }
412         output_streams[i]->bitstream_filters = NULL;
413
414         av_freep(&output_streams[i]->forced_keyframes);
415         av_freep(&output_streams[i]->avfilter);
416         av_freep(&output_streams[i]->filtered_frame);
417         av_freep(&output_streams[i]);
418     }
419     for (i = 0; i < nb_input_files; i++) {
420         avformat_close_input(&input_files[i]->ctx);
421         av_freep(&input_files[i]);
422     }
423     for (i = 0; i < nb_input_streams; i++) {
424         av_freep(&input_streams[i]->decoded_frame);
425         av_dict_free(&input_streams[i]->opts);
426         free_buffer_pool(&input_streams[i]->buffer_pool);
427         avfilter_unref_bufferp(&input_streams[i]->sub2video.ref);
428         av_freep(&input_streams[i]->filters);
429         av_freep(&input_streams[i]);
430     }
431
432     if (vstats_file)
433         fclose(vstats_file);
434     av_free(vstats_filename);
435
436     av_freep(&input_streams);
437     av_freep(&input_files);
438     av_freep(&output_streams);
439     av_freep(&output_files);
440
441     uninit_opts();
442
443     avfilter_uninit();
444     avformat_network_deinit();
445
446     if (received_sigterm) {
447         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
448                (int) received_sigterm);
449         exit (255);
450     }
451
452     exit(ret);
453 }
454
455 void assert_avoptions(AVDictionary *m)
456 {
457     AVDictionaryEntry *t;
458     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
459         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
460         exit_program(1);
461     }
462 }
463
464 static void assert_codec_experimental(AVCodecContext *c, int encoder)
465 {
466     const char *codec_string = encoder ? "encoder" : "decoder";
467     AVCodec *codec;
468     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
469         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
470         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
471                 "results.\nAdd '-strict experimental' if you want to use it.\n",
472                 codec_string, c->codec->name);
473         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
474         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
475             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
476                    codec_string, codec->name);
477         exit_program(1);
478     }
479 }
480
481 static void update_benchmark(const char *fmt, ...)
482 {
483     if (do_benchmark_all) {
484         int64_t t = getutime();
485         va_list va;
486         char buf[1024];
487
488         if (fmt) {
489             va_start(va, fmt);
490             vsnprintf(buf, sizeof(buf), fmt, va);
491             va_end(va);
492             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
493         }
494         current_time = t;
495     }
496 }
497
498 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
499 {
500     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
501     AVCodecContext          *avctx = ost->st->codec;
502     int ret;
503
504     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
505         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
506         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
507
508     if ((avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) && pkt->dts != AV_NOPTS_VALUE) {
509         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
510         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
511             av_log(s, max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG,
512                    "st:%d PTS: %"PRId64" DTS: %"PRId64" < %"PRId64" invalid, cliping\n", pkt->stream_index, pkt->pts, pkt->dts, max);
513             if(pkt->pts >= pkt->dts)
514                 pkt->pts = FFMAX(pkt->pts, max);
515             pkt->dts = max;
516         }
517     }
518
519     /*
520      * Audio encoders may split the packets --  #frames in != #packets out.
521      * But there is no reordering, so we can limit the number of output packets
522      * by simply dropping them here.
523      * Counting encoded video frames needs to be done separately because of
524      * reordering, see do_video_out()
525      */
526     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
527         if (ost->frame_number >= ost->max_frames) {
528             av_free_packet(pkt);
529             return;
530         }
531         ost->frame_number++;
532     }
533
534     while (bsfc) {
535         AVPacket new_pkt = *pkt;
536         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
537                                            &new_pkt.data, &new_pkt.size,
538                                            pkt->data, pkt->size,
539                                            pkt->flags & AV_PKT_FLAG_KEY);
540         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
541             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
542             if(t) {
543                 memcpy(t, new_pkt.data, new_pkt.size);
544                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
545                 new_pkt.data = t;
546                 a = 1;
547             } else
548                 a = AVERROR(ENOMEM);
549         }
550         if (a > 0) {
551             av_free_packet(pkt);
552             new_pkt.destruct = av_destruct_packet;
553         } else if (a < 0) {
554             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
555                    bsfc->filter->name, pkt->stream_index,
556                    avctx->codec ? avctx->codec->name : "copy");
557             print_error("", a);
558             if (exit_on_error)
559                 exit_program(1);
560         }
561         *pkt = new_pkt;
562
563         bsfc = bsfc->next;
564     }
565
566     pkt->stream_index = ost->index;
567     ret = av_interleaved_write_frame(s, pkt);
568     if (ret < 0) {
569         print_error("av_interleaved_write_frame()", ret);
570         exit_program(1);
571     }
572 }
573
574 static int check_recording_time(OutputStream *ost)
575 {
576     OutputFile *of = output_files[ost->file_index];
577
578     if (of->recording_time != INT64_MAX &&
579         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
580                       AV_TIME_BASE_Q) >= 0) {
581         ost->finished = 1;
582         return 0;
583     }
584     return 1;
585 }
586
587 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
588                          AVFrame *frame)
589 {
590     AVCodecContext *enc = ost->st->codec;
591     AVPacket pkt;
592     int got_packet = 0;
593
594     av_init_packet(&pkt);
595     pkt.data = NULL;
596     pkt.size = 0;
597
598     if (!check_recording_time(ost))
599         return;
600
601     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
602         frame->pts = ost->sync_opts;
603     ost->sync_opts = frame->pts + frame->nb_samples;
604
605     av_assert0(pkt.size || !pkt.data);
606     update_benchmark(NULL);
607     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
608         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
609         exit_program(1);
610     }
611     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
612
613     if (got_packet) {
614         if (pkt.pts != AV_NOPTS_VALUE)
615             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
616         if (pkt.dts != AV_NOPTS_VALUE)
617             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
618         if (pkt.duration > 0)
619             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
620
621         if (debug_ts) {
622             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
623                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
624                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
625                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
626         }
627
628         write_frame(s, &pkt, ost);
629
630         audio_size += pkt.size;
631         av_free_packet(&pkt);
632     }
633 }
634
635 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
636 {
637     AVCodecContext *dec;
638     AVPicture *picture2;
639     AVPicture picture_tmp;
640     uint8_t *buf = 0;
641
642     dec = ist->st->codec;
643
644     /* deinterlace : must be done before any resize */
645     if (do_deinterlace) {
646         int size;
647
648         /* create temporary picture */
649         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
650         buf  = av_malloc(size);
651         if (!buf)
652             return;
653
654         picture2 = &picture_tmp;
655         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
656
657         if (avpicture_deinterlace(picture2, picture,
658                                  dec->pix_fmt, dec->width, dec->height) < 0) {
659             /* if error, do not deinterlace */
660             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
661             av_free(buf);
662             buf = NULL;
663             picture2 = picture;
664         }
665     } else {
666         picture2 = picture;
667     }
668
669     if (picture != picture2)
670         *picture = *picture2;
671     *bufp = buf;
672 }
673
674 static void do_subtitle_out(AVFormatContext *s,
675                             OutputStream *ost,
676                             InputStream *ist,
677                             AVSubtitle *sub,
678                             int64_t pts)
679 {
680     int subtitle_out_max_size = 1024 * 1024;
681     int subtitle_out_size, nb, i;
682     AVCodecContext *enc;
683     AVPacket pkt;
684
685     if (pts == AV_NOPTS_VALUE) {
686         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
687         if (exit_on_error)
688             exit_program(1);
689         return;
690     }
691
692     enc = ost->st->codec;
693
694     if (!subtitle_out) {
695         subtitle_out = av_malloc(subtitle_out_max_size);
696     }
697
698     /* Note: DVB subtitle need one packet to draw them and one other
699        packet to clear them */
700     /* XXX: signal it in the codec context ? */
701     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
702         nb = 2;
703     else
704         nb = 1;
705
706     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
707     pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q)
708         - output_files[ost->file_index]->start_time;
709     for (i = 0; i < nb; i++) {
710         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
711         if (!check_recording_time(ost))
712             return;
713
714         sub->pts = pts;
715         // start_display_time is required to be 0
716         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
717         sub->end_display_time  -= sub->start_display_time;
718         sub->start_display_time = 0;
719         if (i == 1)
720             sub->num_rects = 0;
721         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
722                                                     subtitle_out_max_size, sub);
723         if (subtitle_out_size < 0) {
724             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
725             exit_program(1);
726         }
727
728         av_init_packet(&pkt);
729         pkt.data = subtitle_out;
730         pkt.size = subtitle_out_size;
731         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
732         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
733         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
734             /* XXX: the pts correction is handled here. Maybe handling
735                it in the codec would be better */
736             if (i == 0)
737                 pkt.pts += 90 * sub->start_display_time;
738             else
739                 pkt.pts += 90 * sub->end_display_time;
740         }
741         write_frame(s, &pkt, ost);
742         subtitle_size += pkt.size;
743     }
744 }
745
746 static void do_video_out(AVFormatContext *s,
747                          OutputStream *ost,
748                          AVFrame *in_picture,
749                          float quality)
750 {
751     int ret, format_video_sync;
752     AVPacket pkt;
753     AVCodecContext *enc = ost->st->codec;
754     int nb_frames, i;
755     double sync_ipts, delta;
756     double duration = 0;
757     int frame_size = 0;
758     InputStream *ist = NULL;
759
760     if (ost->source_index >= 0)
761         ist = input_streams[ost->source_index];
762
763     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
764         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
765
766     sync_ipts = in_picture->pts;
767     delta = sync_ipts - ost->sync_opts + duration;
768
769     /* by default, we output a single frame */
770     nb_frames = 1;
771
772     format_video_sync = video_sync_method;
773     if (format_video_sync == VSYNC_AUTO)
774         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
775
776     switch (format_video_sync) {
777     case VSYNC_CFR:
778         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
779         if (delta < -1.1)
780             nb_frames = 0;
781         else if (delta > 1.1)
782             nb_frames = lrintf(delta);
783         break;
784     case VSYNC_VFR:
785         if (delta <= -0.6)
786             nb_frames = 0;
787         else if (delta > 0.6)
788             ost->sync_opts = lrint(sync_ipts);
789         break;
790     case VSYNC_DROP:
791     case VSYNC_PASSTHROUGH:
792         ost->sync_opts = lrint(sync_ipts);
793         break;
794     default:
795         av_assert0(0);
796     }
797
798     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
799     if (nb_frames == 0) {
800         nb_frames_drop++;
801         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
802         return;
803     } else if (nb_frames > 1) {
804         if (nb_frames > dts_error_threshold * 30) {
805             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skiping\n", nb_frames - 1);
806             nb_frames_drop++;
807             return;
808         }
809         nb_frames_dup += nb_frames - 1;
810         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
811     }
812
813   /* duplicates frame if needed */
814   for (i = 0; i < nb_frames; i++) {
815     av_init_packet(&pkt);
816     pkt.data = NULL;
817     pkt.size = 0;
818
819     in_picture->pts = ost->sync_opts;
820
821     if (!check_recording_time(ost))
822         return;
823
824     if (s->oformat->flags & AVFMT_RAWPICTURE &&
825         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
826         /* raw pictures are written as AVPicture structure to
827            avoid any copies. We support temporarily the older
828            method. */
829         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
830         enc->coded_frame->top_field_first  = in_picture->top_field_first;
831         pkt.data   = (uint8_t *)in_picture;
832         pkt.size   =  sizeof(AVPicture);
833         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
834         pkt.flags |= AV_PKT_FLAG_KEY;
835
836         write_frame(s, &pkt, ost);
837         video_size += pkt.size;
838     } else {
839         int got_packet;
840         AVFrame big_picture;
841
842         big_picture = *in_picture;
843         /* better than nothing: use input picture interlaced
844            settings */
845         big_picture.interlaced_frame = in_picture->interlaced_frame;
846         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
847             if (ost->top_field_first == -1)
848                 big_picture.top_field_first = in_picture->top_field_first;
849             else
850                 big_picture.top_field_first = !!ost->top_field_first;
851         }
852
853         /* handles same_quant here. This is not correct because it may
854            not be a global option */
855         big_picture.quality = quality;
856         if (!enc->me_threshold)
857             big_picture.pict_type = 0;
858         if (ost->forced_kf_index < ost->forced_kf_count &&
859             big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
860             big_picture.pict_type = AV_PICTURE_TYPE_I;
861             ost->forced_kf_index++;
862         }
863         update_benchmark(NULL);
864         ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
865         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
866         if (ret < 0) {
867             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
868             exit_program(1);
869         }
870
871         if (got_packet) {
872             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
873                 pkt.pts = ost->sync_opts;
874
875             if (pkt.pts != AV_NOPTS_VALUE)
876                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
877             if (pkt.dts != AV_NOPTS_VALUE)
878                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
879
880             if (debug_ts) {
881                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
882                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
883                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
884                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
885             }
886
887             write_frame(s, &pkt, ost);
888             frame_size = pkt.size;
889             video_size += pkt.size;
890             av_free_packet(&pkt);
891
892             /* if two pass, output log */
893             if (ost->logfile && enc->stats_out) {
894                 fprintf(ost->logfile, "%s", enc->stats_out);
895             }
896         }
897     }
898     ost->sync_opts++;
899     /*
900      * For video, number of frames in == number of packets out.
901      * But there may be reordering, so we can't throw away frames on encoder
902      * flush, we need to limit them here, before they go into encoder.
903      */
904     ost->frame_number++;
905   }
906
907     if (vstats_filename && frame_size)
908         do_video_stats(output_files[ost->file_index]->ctx, ost, frame_size);
909 }
910
911 static double psnr(double d)
912 {
913     return -10.0 * log(d) / log(10.0);
914 }
915
916 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
917                            int frame_size)
918 {
919     AVCodecContext *enc;
920     int frame_number;
921     double ti1, bitrate, avg_bitrate;
922
923     /* this is executed just the first time do_video_stats is called */
924     if (!vstats_file) {
925         vstats_file = fopen(vstats_filename, "w");
926         if (!vstats_file) {
927             perror("fopen");
928             exit_program(1);
929         }
930     }
931
932     enc = ost->st->codec;
933     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
934         frame_number = ost->frame_number;
935         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
936         if (enc->flags&CODEC_FLAG_PSNR)
937             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
938
939         fprintf(vstats_file,"f_size= %6d ", frame_size);
940         /* compute pts value */
941         ti1 = ost->sync_opts * av_q2d(enc->time_base);
942         if (ti1 < 0.01)
943             ti1 = 0.01;
944
945         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
946         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
947         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
948                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
949         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
950     }
951 }
952
953 /* check for new output on any of the filtergraphs */
954 static int poll_filters(void)
955 {
956     AVFilterBufferRef *picref;
957     AVFrame *filtered_frame = NULL;
958     int i, ret, ret_all;
959     unsigned nb_success = 1, av_uninit(nb_eof);
960     int64_t frame_pts;
961
962     while (1) {
963         /* Reap all buffers present in the buffer sinks */
964         for (i = 0; i < nb_output_streams; i++) {
965             OutputStream *ost = output_streams[i];
966             OutputFile    *of = output_files[ost->file_index];
967             int ret = 0;
968
969             if (!ost->filter)
970                 continue;
971
972             if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
973                 return AVERROR(ENOMEM);
974             } else
975                 avcodec_get_frame_defaults(ost->filtered_frame);
976             filtered_frame = ost->filtered_frame;
977
978             while (1) {
979                 ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
980                                                    AV_BUFFERSINK_FLAG_NO_REQUEST);
981                 if (ret < 0) {
982                     if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
983                         char buf[256];
984                         av_strerror(ret, buf, sizeof(buf));
985                         av_log(NULL, AV_LOG_WARNING,
986                                "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
987                     }
988                     break;
989                 }
990                 frame_pts = AV_NOPTS_VALUE;
991                 if (picref->pts != AV_NOPTS_VALUE) {
992                     filtered_frame->pts = frame_pts = av_rescale_q(picref->pts,
993                                                     ost->filter->filter->inputs[0]->time_base,
994                                                     ost->st->codec->time_base) -
995                                         av_rescale_q(of->start_time,
996                                                     AV_TIME_BASE_Q,
997                                                     ost->st->codec->time_base);
998
999                     if (of->start_time && filtered_frame->pts < 0) {
1000                         avfilter_unref_buffer(picref);
1001                         continue;
1002                     }
1003                 }
1004                 //if (ost->source_index >= 0)
1005                 //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1006
1007
1008                 switch (ost->filter->filter->inputs[0]->type) {
1009                 case AVMEDIA_TYPE_VIDEO:
1010                     avfilter_copy_buf_props(filtered_frame, picref);
1011                     filtered_frame->pts = frame_pts;
1012                     if (!ost->frame_aspect_ratio)
1013                         ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
1014
1015                     do_video_out(of->ctx, ost, filtered_frame,
1016                                  same_quant ? ost->last_quality :
1017                                               ost->st->codec->global_quality);
1018                     break;
1019                 case AVMEDIA_TYPE_AUDIO:
1020                     avfilter_copy_buf_props(filtered_frame, picref);
1021                     filtered_frame->pts = frame_pts;
1022                     do_audio_out(of->ctx, ost, filtered_frame);
1023                     break;
1024                 default:
1025                     // TODO support subtitle filters
1026                     av_assert0(0);
1027                 }
1028
1029                 avfilter_unref_buffer(picref);
1030             }
1031         }
1032         if (!nb_success) /* from last round */
1033             break;
1034         /* Request frames through all the graphs */
1035         ret_all = nb_success = nb_eof = 0;
1036         for (i = 0; i < nb_filtergraphs; i++) {
1037             ret = avfilter_graph_request_oldest(filtergraphs[i]->graph);
1038             if (!ret) {
1039                 nb_success++;
1040             } else if (ret == AVERROR_EOF) {
1041                 nb_eof++;
1042             } else if (ret != AVERROR(EAGAIN)) {
1043                 char buf[256];
1044                 av_strerror(ret, buf, sizeof(buf));
1045                 av_log(NULL, AV_LOG_WARNING,
1046                        "Error in request_frame(): %s\n", buf);
1047                 ret_all = ret;
1048             }
1049         }
1050         /* Try again if anything succeeded */
1051     }
1052     return nb_eof == nb_filtergraphs ? AVERROR_EOF : ret_all;
1053 }
1054
1055 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1056 {
1057     char buf[1024];
1058     AVBPrint buf_script;
1059     OutputStream *ost;
1060     AVFormatContext *oc;
1061     int64_t total_size;
1062     AVCodecContext *enc;
1063     int frame_number, vid, i;
1064     double bitrate;
1065     int64_t pts = INT64_MAX;
1066     static int64_t last_time = -1;
1067     static int qp_histogram[52];
1068     int hours, mins, secs, us;
1069
1070     if (!print_stats && !is_last_report && !progress_avio)
1071         return;
1072
1073     if (!is_last_report) {
1074         if (last_time == -1) {
1075             last_time = cur_time;
1076             return;
1077         }
1078         if ((cur_time - last_time) < 500000)
1079             return;
1080         last_time = cur_time;
1081     }
1082
1083
1084     oc = output_files[0]->ctx;
1085
1086     total_size = avio_size(oc->pb);
1087     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
1088         total_size = avio_tell(oc->pb);
1089         if (total_size < 0)
1090             total_size = 0;
1091     }
1092
1093     buf[0] = '\0';
1094     vid = 0;
1095     av_bprint_init(&buf_script, 0, 1);
1096     for (i = 0; i < nb_output_streams; i++) {
1097         float q = -1;
1098         ost = output_streams[i];
1099         enc = ost->st->codec;
1100         if (!ost->stream_copy && enc->coded_frame)
1101             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1102         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1103             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1104             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1105                        ost->file_index, ost->index, q);
1106         }
1107         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1108             float fps, t = (cur_time-timer_start) / 1000000.0;
1109
1110             frame_number = ost->frame_number;
1111             fps = t > 1 ? frame_number / t : 0;
1112             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1113                      frame_number, fps < 9.95, fps, q);
1114             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1115             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1116             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1117                        ost->file_index, ost->index, q);
1118             if (is_last_report)
1119                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1120             if (qp_hist) {
1121                 int j;
1122                 int qp = lrintf(q);
1123                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1124                     qp_histogram[qp]++;
1125                 for (j = 0; j < 32; j++)
1126                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1127             }
1128             if (enc->flags&CODEC_FLAG_PSNR) {
1129                 int j;
1130                 double error, error_sum = 0;
1131                 double scale, scale_sum = 0;
1132                 double p;
1133                 char type[3] = { 'Y','U','V' };
1134                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1135                 for (j = 0; j < 3; j++) {
1136                     if (is_last_report) {
1137                         error = enc->error[j];
1138                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1139                     } else {
1140                         error = enc->coded_frame->error[j];
1141                         scale = enc->width * enc->height * 255.0 * 255.0;
1142                     }
1143                     if (j)
1144                         scale /= 4;
1145                     error_sum += error;
1146                     scale_sum += scale;
1147                     p = psnr(error / scale);
1148                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1149                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1150                                ost->file_index, ost->index, type[i] | 32, p);
1151                 }
1152                 p = psnr(error_sum / scale_sum);
1153                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1154                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1155                            ost->file_index, ost->index, p);
1156             }
1157             vid = 1;
1158         }
1159         /* compute min output value */
1160         pts = FFMIN(pts, av_rescale_q(ost->st->pts.val,
1161                                       ost->st->time_base, AV_TIME_BASE_Q));
1162     }
1163
1164     secs = pts / AV_TIME_BASE;
1165     us = pts % AV_TIME_BASE;
1166     mins = secs / 60;
1167     secs %= 60;
1168     hours = mins / 60;
1169     mins %= 60;
1170
1171     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1172
1173     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1174              "size=%8.0fkB time=", total_size / 1024.0);
1175     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1176              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1177              (100 * us) / AV_TIME_BASE);
1178     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1179              "bitrate=%6.1fkbits/s", bitrate);
1180     av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1181     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1182     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1183                hours, mins, secs, us);
1184
1185     if (nb_frames_dup || nb_frames_drop)
1186         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1187                 nb_frames_dup, nb_frames_drop);
1188     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1189     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1190
1191     if (print_stats || is_last_report) {
1192     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1193
1194     fflush(stderr);
1195     }
1196
1197     if (progress_avio) {
1198         av_bprintf(&buf_script, "progress=%s\n",
1199                    is_last_report ? "end" : "continue");
1200         avio_write(progress_avio, buf_script.str,
1201                    FFMIN(buf_script.len, buf_script.size - 1));
1202         avio_flush(progress_avio);
1203         av_bprint_finalize(&buf_script, NULL);
1204         if (is_last_report) {
1205             avio_close(progress_avio);
1206             progress_avio = NULL;
1207         }
1208     }
1209
1210     if (is_last_report) {
1211         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1212         av_log(NULL, AV_LOG_INFO, "\n");
1213         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1214                video_size / 1024.0,
1215                audio_size / 1024.0,
1216                subtitle_size / 1024.0,
1217                extra_size / 1024.0,
1218                100.0 * (total_size - raw) / raw
1219         );
1220         if(video_size + audio_size + subtitle_size + extra_size == 0){
1221             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1222         }
1223     }
1224 }
1225
1226 static void flush_encoders(void)
1227 {
1228     int i, ret;
1229
1230     for (i = 0; i < nb_output_streams; i++) {
1231         OutputStream   *ost = output_streams[i];
1232         AVCodecContext *enc = ost->st->codec;
1233         AVFormatContext *os = output_files[ost->file_index]->ctx;
1234         int stop_encoding = 0;
1235
1236         if (!ost->encoding_needed)
1237             continue;
1238
1239         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1240             continue;
1241         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1242             continue;
1243
1244         for (;;) {
1245             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1246             const char *desc;
1247             int64_t *size;
1248
1249             switch (ost->st->codec->codec_type) {
1250             case AVMEDIA_TYPE_AUDIO:
1251                 encode = avcodec_encode_audio2;
1252                 desc   = "Audio";
1253                 size   = &audio_size;
1254                 break;
1255             case AVMEDIA_TYPE_VIDEO:
1256                 encode = avcodec_encode_video2;
1257                 desc   = "Video";
1258                 size   = &video_size;
1259                 break;
1260             default:
1261                 stop_encoding = 1;
1262             }
1263
1264             if (encode) {
1265                 AVPacket pkt;
1266                 int got_packet;
1267                 av_init_packet(&pkt);
1268                 pkt.data = NULL;
1269                 pkt.size = 0;
1270
1271                 update_benchmark(NULL);
1272                 ret = encode(enc, &pkt, NULL, &got_packet);
1273                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1274                 if (ret < 0) {
1275                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1276                     exit_program(1);
1277                 }
1278                 *size += pkt.size;
1279                 if (ost->logfile && enc->stats_out) {
1280                     fprintf(ost->logfile, "%s", enc->stats_out);
1281                 }
1282                 if (!got_packet) {
1283                     stop_encoding = 1;
1284                     break;
1285                 }
1286                 if (pkt.pts != AV_NOPTS_VALUE)
1287                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1288                 if (pkt.dts != AV_NOPTS_VALUE)
1289                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1290                 write_frame(os, &pkt, ost);
1291             }
1292
1293             if (stop_encoding)
1294                 break;
1295         }
1296     }
1297 }
1298
1299 /*
1300  * Check whether a packet from ist should be written into ost at this time
1301  */
1302 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1303 {
1304     OutputFile *of = output_files[ost->file_index];
1305     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1306
1307     if (ost->source_index != ist_index)
1308         return 0;
1309
1310     if (of->start_time && ist->pts < of->start_time)
1311         return 0;
1312
1313     return 1;
1314 }
1315
1316 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1317 {
1318     OutputFile *of = output_files[ost->file_index];
1319     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1320     AVPicture pict;
1321     AVPacket opkt;
1322
1323     av_init_packet(&opkt);
1324
1325     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1326         !ost->copy_initial_nonkeyframes)
1327         return;
1328
1329     if (of->recording_time != INT64_MAX &&
1330         ist->pts >= of->recording_time + of->start_time) {
1331         ost->finished = 1;
1332         return;
1333     }
1334
1335     /* force the input stream PTS */
1336     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1337         audio_size += pkt->size;
1338     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1339         video_size += pkt->size;
1340         ost->sync_opts++;
1341     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1342         subtitle_size += pkt->size;
1343     }
1344
1345     if (pkt->pts != AV_NOPTS_VALUE)
1346         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1347     else
1348         opkt.pts = AV_NOPTS_VALUE;
1349
1350     if (pkt->dts == AV_NOPTS_VALUE)
1351         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1352     else
1353         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1354     opkt.dts -= ost_tb_start_time;
1355
1356     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1357     opkt.flags    = pkt->flags;
1358
1359     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1360     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1361        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1362        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1363        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1364        ) {
1365         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1366             opkt.destruct = av_destruct_packet;
1367     } else {
1368         opkt.data = pkt->data;
1369         opkt.size = pkt->size;
1370     }
1371
1372     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1373         /* store AVPicture in AVPacket, as expected by the output format */
1374         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1375         opkt.data = (uint8_t *)&pict;
1376         opkt.size = sizeof(AVPicture);
1377         opkt.flags |= AV_PKT_FLAG_KEY;
1378     }
1379
1380     write_frame(of->ctx, &opkt, ost);
1381     ost->st->codec->frame_number++;
1382     av_free_packet(&opkt);
1383 }
1384
1385 static void rate_emu_sleep(InputStream *ist)
1386 {
1387     if (input_files[ist->file_index]->rate_emu) {
1388         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
1389         int64_t now = av_gettime() - ist->start;
1390         if (pts > now)
1391             av_usleep(pts - now);
1392     }
1393 }
1394
1395 int guess_input_channel_layout(InputStream *ist)
1396 {
1397     AVCodecContext *dec = ist->st->codec;
1398
1399     if (!dec->channel_layout) {
1400         char layout_name[256];
1401
1402         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1403         if (!dec->channel_layout)
1404             return 0;
1405         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1406                                      dec->channels, dec->channel_layout);
1407         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1408                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1409     }
1410     return 1;
1411 }
1412
1413 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1414 {
1415     AVFrame *decoded_frame;
1416     AVCodecContext *avctx = ist->st->codec;
1417     int i, ret, resample_changed;
1418     AVRational decoded_frame_tb;
1419
1420     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1421         return AVERROR(ENOMEM);
1422     else
1423         avcodec_get_frame_defaults(ist->decoded_frame);
1424     decoded_frame = ist->decoded_frame;
1425
1426     update_benchmark(NULL);
1427     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1428     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1429
1430     if (ret >= 0 && avctx->sample_rate <= 0) {
1431         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1432         return AVERROR_INVALIDDATA;
1433     }
1434
1435     if (!*got_output || ret < 0) {
1436         if (!pkt->size) {
1437             for (i = 0; i < ist->nb_filters; i++)
1438                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL,
1439                                      AV_BUFFERSRC_FLAG_NO_COPY);
1440         }
1441         return ret;
1442     }
1443
1444 #if 1
1445     /* increment next_dts to use for the case where the input stream does not
1446        have timestamps or there are multiple frames in the packet */
1447     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1448                      avctx->sample_rate;
1449     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1450                      avctx->sample_rate;
1451 #endif
1452
1453     rate_emu_sleep(ist);
1454
1455     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1456                        ist->resample_channels       != avctx->channels               ||
1457                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1458                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1459     if (resample_changed) {
1460         char layout1[64], layout2[64];
1461
1462         if (!guess_input_channel_layout(ist)) {
1463             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1464                    "layout for Input Stream #%d.%d\n", ist->file_index,
1465                    ist->st->index);
1466             exit_program(1);
1467         }
1468         decoded_frame->channel_layout = avctx->channel_layout;
1469
1470         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1471                                      ist->resample_channel_layout);
1472         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1473                                      decoded_frame->channel_layout);
1474
1475         av_log(NULL, AV_LOG_INFO,
1476                "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",
1477                ist->file_index, ist->st->index,
1478                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1479                ist->resample_channels, layout1,
1480                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1481                avctx->channels, layout2);
1482
1483         ist->resample_sample_fmt     = decoded_frame->format;
1484         ist->resample_sample_rate    = decoded_frame->sample_rate;
1485         ist->resample_channel_layout = decoded_frame->channel_layout;
1486         ist->resample_channels       = avctx->channels;
1487
1488         for (i = 0; i < nb_filtergraphs; i++)
1489             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1490                 FilterGraph *fg = filtergraphs[i];
1491                 int j;
1492                 if (configure_filtergraph(fg) < 0) {
1493                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1494                     exit_program(1);
1495                 }
1496                 for (j = 0; j < fg->nb_outputs; j++) {
1497                     OutputStream *ost = fg->outputs[j]->ost;
1498                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1499                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1500                         av_buffersink_set_frame_size(ost->filter->filter,
1501                                                      ost->st->codec->frame_size);
1502                 }
1503             }
1504     }
1505
1506     /* if the decoder provides a pts, use it instead of the last packet pts.
1507        the decoder could be delaying output by a packet or more. */
1508     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1509         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1510         decoded_frame_tb   = avctx->time_base;
1511     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1512         decoded_frame->pts = decoded_frame->pkt_pts;
1513         pkt->pts           = AV_NOPTS_VALUE;
1514         decoded_frame_tb   = ist->st->time_base;
1515     } else if (pkt->pts != AV_NOPTS_VALUE) {
1516         decoded_frame->pts = pkt->pts;
1517         pkt->pts           = AV_NOPTS_VALUE;
1518         decoded_frame_tb   = ist->st->time_base;
1519     }else {
1520         decoded_frame->pts = ist->dts;
1521         decoded_frame_tb   = AV_TIME_BASE_Q;
1522     }
1523     if (decoded_frame->pts != AV_NOPTS_VALUE)
1524         decoded_frame->pts = av_rescale_q(decoded_frame->pts,
1525                                           decoded_frame_tb,
1526                                           (AVRational){1, ist->st->codec->sample_rate});
1527     for (i = 0; i < ist->nb_filters; i++)
1528         av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0);
1529
1530     decoded_frame->pts = AV_NOPTS_VALUE;
1531
1532     return ret;
1533 }
1534
1535 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1536 {
1537     AVFrame *decoded_frame;
1538     void *buffer_to_free = NULL;
1539     int i, ret = 0, resample_changed;
1540     int64_t best_effort_timestamp;
1541     AVRational *frame_sample_aspect;
1542     float quality;
1543
1544     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1545         return AVERROR(ENOMEM);
1546     else
1547         avcodec_get_frame_defaults(ist->decoded_frame);
1548     decoded_frame = ist->decoded_frame;
1549     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1550
1551     update_benchmark(NULL);
1552     ret = avcodec_decode_video2(ist->st->codec,
1553                                 decoded_frame, got_output, pkt);
1554     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1555     if (!*got_output || ret < 0) {
1556         if (!pkt->size) {
1557             for (i = 0; i < ist->nb_filters; i++)
1558                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, AV_BUFFERSRC_FLAG_NO_COPY);
1559         }
1560         return ret;
1561     }
1562
1563     quality = same_quant ? decoded_frame->quality : 0;
1564
1565     if(ist->top_field_first>=0)
1566         decoded_frame->top_field_first = ist->top_field_first;
1567
1568     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1569     if(best_effort_timestamp != AV_NOPTS_VALUE)
1570         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1571
1572     if (debug_ts) {
1573         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1574                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1575                 ist->st->index, av_ts2str(decoded_frame->pts),
1576                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1577                 best_effort_timestamp,
1578                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1579                 decoded_frame->key_frame, decoded_frame->pict_type);
1580     }
1581
1582     pkt->size = 0;
1583     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1584
1585     rate_emu_sleep(ist);
1586
1587     if (ist->st->sample_aspect_ratio.num)
1588         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1589
1590     resample_changed = ist->resample_width   != decoded_frame->width  ||
1591                        ist->resample_height  != decoded_frame->height ||
1592                        ist->resample_pix_fmt != decoded_frame->format;
1593     if (resample_changed) {
1594         av_log(NULL, AV_LOG_INFO,
1595                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1596                ist->file_index, ist->st->index,
1597                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1598                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1599
1600         ist->resample_width   = decoded_frame->width;
1601         ist->resample_height  = decoded_frame->height;
1602         ist->resample_pix_fmt = decoded_frame->format;
1603
1604         for (i = 0; i < nb_filtergraphs; i++)
1605             if (ist_in_filtergraph(filtergraphs[i], ist) &&
1606                 configure_filtergraph(filtergraphs[i]) < 0) {
1607                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1608                 exit_program(1);
1609             }
1610     }
1611
1612     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1613     for (i = 0; i < ist->nb_filters; i++) {
1614         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
1615                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
1616                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
1617         // XXX what an ugly hack
1618         if (ist->filters[i]->graph->nb_outputs == 1)
1619             ist->filters[i]->graph->outputs[0]->ost->last_quality = quality;
1620
1621         if (!frame_sample_aspect->num)
1622             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1623         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
1624             FrameBuffer      *buf = decoded_frame->opaque;
1625             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1626                                         decoded_frame->data, decoded_frame->linesize,
1627                                         AV_PERM_READ | AV_PERM_PRESERVE,
1628                                         ist->st->codec->width, ist->st->codec->height,
1629                                         ist->st->codec->pix_fmt);
1630
1631             avfilter_copy_frame_props(fb, decoded_frame);
1632             fb->buf->priv           = buf;
1633             fb->buf->free           = filter_release_buffer;
1634
1635             av_assert0(buf->refcount>0);
1636             buf->refcount++;
1637             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
1638                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
1639                                  AV_BUFFERSRC_FLAG_NO_COPY);
1640         } else
1641         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, 0)<0) {
1642             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
1643             exit_program(1);
1644         }
1645
1646     }
1647
1648     av_free(buffer_to_free);
1649     return ret;
1650 }
1651
1652 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1653 {
1654     AVSubtitle subtitle;
1655     int64_t pts = pkt->pts;
1656     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1657                                           &subtitle, got_output, pkt);
1658     if (ret < 0 || !*got_output) {
1659         if (!pkt->size)
1660             sub2video_flush(ist);
1661         return ret;
1662     }
1663
1664     if (ist->fix_sub_duration) {
1665         if (ist->prev_sub.got_output) {
1666             int end = av_rescale_q(pts - ist->prev_sub.pts, ist->st->time_base,
1667                                    (AVRational){ 1, 1000 });
1668             if (end < ist->prev_sub.subtitle.end_display_time) {
1669                 av_log(ist->st->codec, AV_LOG_DEBUG,
1670                        "Subtitle duration reduced from %d to %d\n",
1671                        ist->prev_sub.subtitle.end_display_time, end);
1672                 ist->prev_sub.subtitle.end_display_time = end;
1673             }
1674         }
1675         FFSWAP(int64_t,    pts,         ist->prev_sub.pts);
1676         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1677         FFSWAP(int,        ret,         ist->prev_sub.ret);
1678         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1679     }
1680
1681     if (!*got_output || !subtitle.num_rects)
1682         return ret;
1683
1684     rate_emu_sleep(ist);
1685
1686     sub2video_update(ist, &subtitle, pkt->pts);
1687
1688     for (i = 0; i < nb_output_streams; i++) {
1689         OutputStream *ost = output_streams[i];
1690
1691         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1692             continue;
1693
1694         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pts);
1695     }
1696
1697     avsubtitle_free(&subtitle);
1698     return ret;
1699 }
1700
1701 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1702 static int output_packet(InputStream *ist, const AVPacket *pkt)
1703 {
1704     int ret = 0, i;
1705     int got_output;
1706
1707     AVPacket avpkt;
1708     if (!ist->saw_first_ts) {
1709         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;
1710         ist->pts = 0;
1711         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1712             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1713             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1714         }
1715         ist->saw_first_ts = 1;
1716     }
1717
1718     if (ist->next_dts == AV_NOPTS_VALUE)
1719         ist->next_dts = ist->dts;
1720     if (ist->next_pts == AV_NOPTS_VALUE)
1721         ist->next_pts = ist->pts;
1722
1723     if (pkt == NULL) {
1724         /* EOF handling */
1725         av_init_packet(&avpkt);
1726         avpkt.data = NULL;
1727         avpkt.size = 0;
1728         goto handle_eof;
1729     } else {
1730         avpkt = *pkt;
1731     }
1732
1733     if (pkt->dts != AV_NOPTS_VALUE) {
1734         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1735         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1736             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1737     }
1738
1739     // while we have more to decode or while the decoder did output something on EOF
1740     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1741         int duration;
1742     handle_eof:
1743
1744         ist->pts = ist->next_pts;
1745         ist->dts = ist->next_dts;
1746
1747         if (avpkt.size && avpkt.size != pkt->size) {
1748             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1749                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1750             ist->showed_multi_packet_warning = 1;
1751         }
1752
1753         switch (ist->st->codec->codec_type) {
1754         case AVMEDIA_TYPE_AUDIO:
1755             ret = decode_audio    (ist, &avpkt, &got_output);
1756             break;
1757         case AVMEDIA_TYPE_VIDEO:
1758             ret = decode_video    (ist, &avpkt, &got_output);
1759             if (avpkt.duration) {
1760                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1761             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1762                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1763                 duration = ((int64_t)AV_TIME_BASE *
1764                                 ist->st->codec->time_base.num * ticks) /
1765                                 ist->st->codec->time_base.den;
1766             } else
1767                 duration = 0;
1768
1769             if(ist->dts != AV_NOPTS_VALUE && duration) {
1770                 ist->next_dts += duration;
1771             }else
1772                 ist->next_dts = AV_NOPTS_VALUE;
1773
1774             if (got_output)
1775                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1776             break;
1777         case AVMEDIA_TYPE_SUBTITLE:
1778             ret = transcode_subtitles(ist, &avpkt, &got_output);
1779             break;
1780         default:
1781             return -1;
1782         }
1783
1784         if (ret < 0)
1785             return ret;
1786
1787         avpkt.dts=
1788         avpkt.pts= AV_NOPTS_VALUE;
1789
1790         // touch data and size only if not EOF
1791         if (pkt) {
1792             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1793                 ret = avpkt.size;
1794             avpkt.data += ret;
1795             avpkt.size -= ret;
1796         }
1797         if (!got_output) {
1798             continue;
1799         }
1800     }
1801
1802     /* handle stream copy */
1803     if (!ist->decoding_needed) {
1804         rate_emu_sleep(ist);
1805         ist->dts = ist->next_dts;
1806         switch (ist->st->codec->codec_type) {
1807         case AVMEDIA_TYPE_AUDIO:
1808             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1809                              ist->st->codec->sample_rate;
1810             break;
1811         case AVMEDIA_TYPE_VIDEO:
1812             if (pkt->duration) {
1813                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1814             } else if(ist->st->codec->time_base.num != 0) {
1815                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1816                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1817                                   ist->st->codec->time_base.num * ticks) /
1818                                   ist->st->codec->time_base.den;
1819             }
1820             break;
1821         }
1822         ist->pts = ist->dts;
1823         ist->next_pts = ist->next_dts;
1824     }
1825     for (i = 0; pkt && i < nb_output_streams; i++) {
1826         OutputStream *ost = output_streams[i];
1827
1828         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1829             continue;
1830
1831         do_streamcopy(ist, ost, pkt);
1832     }
1833
1834     return 0;
1835 }
1836
1837 static void print_sdp(void)
1838 {
1839     char sdp[2048];
1840     int i;
1841     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1842
1843     if (!avc)
1844         exit_program(1);
1845     for (i = 0; i < nb_output_files; i++)
1846         avc[i] = output_files[i]->ctx;
1847
1848     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1849     printf("SDP:\n%s\n", sdp);
1850     fflush(stdout);
1851     av_freep(&avc);
1852 }
1853
1854 static int init_input_stream(int ist_index, char *error, int error_len)
1855 {
1856     InputStream *ist = input_streams[ist_index];
1857
1858     if (ist->decoding_needed) {
1859         AVCodec *codec = ist->dec;
1860         if (!codec) {
1861             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1862                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1863             return AVERROR(EINVAL);
1864         }
1865
1866         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
1867         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
1868             ist->st->codec->get_buffer     = codec_get_buffer;
1869             ist->st->codec->release_buffer = codec_release_buffer;
1870             ist->st->codec->opaque         = &ist->buffer_pool;
1871         }
1872
1873         if (!av_dict_get(ist->opts, "threads", NULL, 0))
1874             av_dict_set(&ist->opts, "threads", "auto", 0);
1875         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
1876             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1877                     ist->file_index, ist->st->index);
1878             return AVERROR(EINVAL);
1879         }
1880         assert_codec_experimental(ist->st->codec, 0);
1881         assert_avoptions(ist->opts);
1882     }
1883
1884     ist->next_pts = AV_NOPTS_VALUE;
1885     ist->next_dts = AV_NOPTS_VALUE;
1886     ist->is_start = 1;
1887
1888     return 0;
1889 }
1890
1891 static InputStream *get_input_stream(OutputStream *ost)
1892 {
1893     if (ost->source_index >= 0)
1894         return input_streams[ost->source_index];
1895     return NULL;
1896 }
1897
1898 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1899                                     AVCodecContext *avctx)
1900 {
1901     char *p;
1902     int n = 1, i;
1903     int64_t t;
1904
1905     for (p = kf; *p; p++)
1906         if (*p == ',')
1907             n++;
1908     ost->forced_kf_count = n;
1909     ost->forced_kf_pts   = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1910     if (!ost->forced_kf_pts) {
1911         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1912         exit_program(1);
1913     }
1914
1915     p = kf;
1916     for (i = 0; i < n; i++) {
1917         char *next = strchr(p, ',');
1918
1919         if (next)
1920             *next++ = 0;
1921
1922         t = parse_time_or_die("force_key_frames", p, 1);
1923         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1924
1925         p = next;
1926     }
1927 }
1928
1929 static void report_new_stream(int input_index, AVPacket *pkt)
1930 {
1931     InputFile *file = input_files[input_index];
1932     AVStream *st = file->ctx->streams[pkt->stream_index];
1933
1934     if (pkt->stream_index < file->nb_streams_warn)
1935         return;
1936     av_log(file->ctx, AV_LOG_WARNING,
1937            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
1938            av_get_media_type_string(st->codec->codec_type),
1939            input_index, pkt->stream_index,
1940            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
1941     file->nb_streams_warn = pkt->stream_index + 1;
1942 }
1943
1944 static int transcode_init(void)
1945 {
1946     int ret = 0, i, j, k;
1947     AVFormatContext *oc;
1948     AVCodecContext *codec;
1949     OutputStream *ost;
1950     InputStream *ist;
1951     char error[1024];
1952     int want_sdp = 1;
1953
1954     /* init framerate emulation */
1955     for (i = 0; i < nb_input_files; i++) {
1956         InputFile *ifile = input_files[i];
1957         if (ifile->rate_emu)
1958             for (j = 0; j < ifile->nb_streams; j++)
1959                 input_streams[j + ifile->ist_index]->start = av_gettime();
1960     }
1961
1962     /* output stream init */
1963     for (i = 0; i < nb_output_files; i++) {
1964         oc = output_files[i]->ctx;
1965         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
1966             av_dump_format(oc, i, oc->filename, 1);
1967             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
1968             return AVERROR(EINVAL);
1969         }
1970     }
1971
1972     /* init complex filtergraphs */
1973     for (i = 0; i < nb_filtergraphs; i++)
1974         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
1975             return ret;
1976
1977     /* for each output stream, we compute the right encoding parameters */
1978     for (i = 0; i < nb_output_streams; i++) {
1979         AVCodecContext *icodec = NULL;
1980         ost = output_streams[i];
1981         oc  = output_files[ost->file_index]->ctx;
1982         ist = get_input_stream(ost);
1983
1984         if (ost->attachment_filename)
1985             continue;
1986
1987         codec  = ost->st->codec;
1988
1989         if (ist) {
1990             icodec = ist->st->codec;
1991
1992             ost->st->disposition          = ist->st->disposition;
1993             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
1994             codec->chroma_sample_location = icodec->chroma_sample_location;
1995         }
1996
1997         if (ost->stream_copy) {
1998             uint64_t extra_size;
1999
2000             av_assert0(ist && !ost->filter);
2001
2002             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2003
2004             if (extra_size > INT_MAX) {
2005                 return AVERROR(EINVAL);
2006             }
2007
2008             /* if stream_copy is selected, no need to decode or encode */
2009             codec->codec_id   = icodec->codec_id;
2010             codec->codec_type = icodec->codec_type;
2011
2012             if (!codec->codec_tag) {
2013                 if (!oc->oformat->codec_tag ||
2014                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2015                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2016                     codec->codec_tag = icodec->codec_tag;
2017             }
2018
2019             codec->bit_rate       = icodec->bit_rate;
2020             codec->rc_max_rate    = icodec->rc_max_rate;
2021             codec->rc_buffer_size = icodec->rc_buffer_size;
2022             codec->field_order    = icodec->field_order;
2023             codec->extradata      = av_mallocz(extra_size);
2024             if (!codec->extradata) {
2025                 return AVERROR(ENOMEM);
2026             }
2027             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2028             codec->extradata_size= icodec->extradata_size;
2029             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2030
2031             codec->time_base = ist->st->time_base;
2032             /*
2033              * Avi is a special case here because it supports variable fps but
2034              * having the fps and timebase differe significantly adds quite some
2035              * overhead
2036              */
2037             if(!strcmp(oc->oformat->name, "avi")) {
2038                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2039                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2040                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2041                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2042                      || copy_tb==2){
2043                     codec->time_base.num = ist->st->r_frame_rate.den;
2044                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2045                     codec->ticks_per_frame = 2;
2046                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2047                                  && av_q2d(ist->st->time_base) < 1.0/500
2048                     || copy_tb==0){
2049                     codec->time_base = icodec->time_base;
2050                     codec->time_base.num *= icodec->ticks_per_frame;
2051                     codec->time_base.den *= 2;
2052                     codec->ticks_per_frame = 2;
2053                 }
2054             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2055                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2056                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2057             ) {
2058                 if(   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2059                                 && av_q2d(ist->st->time_base) < 1.0/500
2060                    || copy_tb==0){
2061                     codec->time_base = icodec->time_base;
2062                     codec->time_base.num *= icodec->ticks_per_frame;
2063                 }
2064             }
2065
2066             if(ost->frame_rate.num)
2067                 codec->time_base = av_inv_q(ost->frame_rate);
2068
2069             av_reduce(&codec->time_base.num, &codec->time_base.den,
2070                         codec->time_base.num, codec->time_base.den, INT_MAX);
2071
2072             switch (codec->codec_type) {
2073             case AVMEDIA_TYPE_AUDIO:
2074                 if (audio_volume != 256) {
2075                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2076                     exit_program(1);
2077                 }
2078                 codec->channel_layout     = icodec->channel_layout;
2079                 codec->sample_rate        = icodec->sample_rate;
2080                 codec->channels           = icodec->channels;
2081                 codec->frame_size         = icodec->frame_size;
2082                 codec->audio_service_type = icodec->audio_service_type;
2083                 codec->block_align        = icodec->block_align;
2084                 if((codec->block_align == 1 || codec->block_align == 1152) && codec->codec_id == AV_CODEC_ID_MP3)
2085                     codec->block_align= 0;
2086                 if(codec->codec_id == AV_CODEC_ID_AC3)
2087                     codec->block_align= 0;
2088                 break;
2089             case AVMEDIA_TYPE_VIDEO:
2090                 codec->pix_fmt            = icodec->pix_fmt;
2091                 codec->width              = icodec->width;
2092                 codec->height             = icodec->height;
2093                 codec->has_b_frames       = icodec->has_b_frames;
2094                 if (!codec->sample_aspect_ratio.num) {
2095                     codec->sample_aspect_ratio   =
2096                     ost->st->sample_aspect_ratio =
2097                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2098                         ist->st->codec->sample_aspect_ratio.num ?
2099                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2100                 }
2101                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2102                 break;
2103             case AVMEDIA_TYPE_SUBTITLE:
2104                 codec->width  = icodec->width;
2105                 codec->height = icodec->height;
2106                 break;
2107             case AVMEDIA_TYPE_DATA:
2108             case AVMEDIA_TYPE_ATTACHMENT:
2109                 break;
2110             default:
2111                 abort();
2112             }
2113         } else {
2114             if (!ost->enc)
2115                 ost->enc = avcodec_find_encoder(codec->codec_id);
2116             if (!ost->enc) {
2117                 /* should only happen when a default codec is not present. */
2118                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2119                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2120                 ret = AVERROR(EINVAL);
2121                 goto dump_format;
2122             }
2123
2124             if (ist)
2125                 ist->decoding_needed = 1;
2126             ost->encoding_needed = 1;
2127
2128             if (!ost->filter &&
2129                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2130                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2131                     FilterGraph *fg;
2132                     fg = init_simple_filtergraph(ist, ost);
2133                     if (configure_filtergraph(fg)) {
2134                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2135                         exit(1);
2136                     }
2137             }
2138
2139             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2140                 if (ost->filter && !ost->frame_rate.num)
2141                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2142                 if (ist && !ost->frame_rate.num)
2143                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2144 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2145                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2146                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2147                     ost->frame_rate = ost->enc->supported_framerates[idx];
2148                 }
2149             }
2150
2151             switch (codec->codec_type) {
2152             case AVMEDIA_TYPE_AUDIO:
2153                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2154                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2155                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2156                 codec->channels       = av_get_channel_layout_nb_channels(codec->channel_layout);
2157                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2158                 break;
2159             case AVMEDIA_TYPE_VIDEO:
2160                 codec->time_base = av_inv_q(ost->frame_rate);
2161                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2162                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2163                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2164                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2165                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2166                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2167                 }
2168                 for (j = 0; j < ost->forced_kf_count; j++)
2169                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2170                                                          AV_TIME_BASE_Q,
2171                                                          codec->time_base);
2172
2173                 codec->width  = ost->filter->filter->inputs[0]->w;
2174                 codec->height = ost->filter->filter->inputs[0]->h;
2175                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2176                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
2177                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
2178                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2179                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2180
2181                 if (!icodec ||
2182                     codec->width   != icodec->width  ||
2183                     codec->height  != icodec->height ||
2184                     codec->pix_fmt != icodec->pix_fmt) {
2185                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2186                 }
2187
2188                 if (ost->forced_keyframes)
2189                     parse_forced_key_frames(ost->forced_keyframes, ost,
2190                                             ost->st->codec);
2191                 break;
2192             case AVMEDIA_TYPE_SUBTITLE:
2193                 codec->time_base = (AVRational){1, 1000};
2194                 if (!codec->width) {
2195                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2196                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2197                 }
2198                 break;
2199             default:
2200                 abort();
2201                 break;
2202             }
2203             /* two pass mode */
2204             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2205                 char logfilename[1024];
2206                 FILE *f;
2207
2208                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2209                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2210                          i);
2211                 if (!strcmp(ost->enc->name, "libx264")) {
2212                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2213                 } else {
2214                     if (codec->flags & CODEC_FLAG_PASS2) {
2215                         char  *logbuffer;
2216                         size_t logbuffer_size;
2217                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2218                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2219                                    logfilename);
2220                             exit_program(1);
2221                         }
2222                         codec->stats_in = logbuffer;
2223                     }
2224                     if (codec->flags & CODEC_FLAG_PASS1) {
2225                         f = fopen(logfilename, "wb");
2226                         if (!f) {
2227                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2228                                 logfilename, strerror(errno));
2229                             exit_program(1);
2230                         }
2231                         ost->logfile = f;
2232                     }
2233                 }
2234             }
2235         }
2236     }
2237
2238     /* open each encoder */
2239     for (i = 0; i < nb_output_streams; i++) {
2240         ost = output_streams[i];
2241         if (ost->encoding_needed) {
2242             AVCodec      *codec = ost->enc;
2243             AVCodecContext *dec = NULL;
2244
2245             if ((ist = get_input_stream(ost)))
2246                 dec = ist->st->codec;
2247             if (dec && dec->subtitle_header) {
2248                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2249                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2250                 if (!ost->st->codec->subtitle_header) {
2251                     ret = AVERROR(ENOMEM);
2252                     goto dump_format;
2253                 }
2254                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2255                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2256             }
2257             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2258                 av_dict_set(&ost->opts, "threads", "auto", 0);
2259             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2260                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2261                         ost->file_index, ost->index);
2262                 ret = AVERROR(EINVAL);
2263                 goto dump_format;
2264             }
2265             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2266                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2267                 av_buffersink_set_frame_size(ost->filter->filter,
2268                                              ost->st->codec->frame_size);
2269             assert_codec_experimental(ost->st->codec, 1);
2270             assert_avoptions(ost->opts);
2271             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2272                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2273                                              " It takes bits/s as argument, not kbits/s\n");
2274             extra_size += ost->st->codec->extradata_size;
2275
2276             if (ost->st->codec->me_threshold)
2277                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
2278         }
2279     }
2280
2281     /* init input streams */
2282     for (i = 0; i < nb_input_streams; i++)
2283         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
2284             goto dump_format;
2285
2286     /* discard unused programs */
2287     for (i = 0; i < nb_input_files; i++) {
2288         InputFile *ifile = input_files[i];
2289         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2290             AVProgram *p = ifile->ctx->programs[j];
2291             int discard  = AVDISCARD_ALL;
2292
2293             for (k = 0; k < p->nb_stream_indexes; k++)
2294                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2295                     discard = AVDISCARD_DEFAULT;
2296                     break;
2297                 }
2298             p->discard = discard;
2299         }
2300     }
2301
2302     /* open files and write file headers */
2303     for (i = 0; i < nb_output_files; i++) {
2304         oc = output_files[i]->ctx;
2305         oc->interrupt_callback = int_cb;
2306         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2307             char errbuf[128];
2308             const char *errbuf_ptr = errbuf;
2309             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
2310                 errbuf_ptr = strerror(AVUNERROR(ret));
2311             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
2312             ret = AVERROR(EINVAL);
2313             goto dump_format;
2314         }
2315 //         assert_avoptions(output_files[i]->opts);
2316         if (strcmp(oc->oformat->name, "rtp")) {
2317             want_sdp = 0;
2318         }
2319     }
2320
2321  dump_format:
2322     /* dump the file output parameters - cannot be done before in case
2323        of stream copy */
2324     for (i = 0; i < nb_output_files; i++) {
2325         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2326     }
2327
2328     /* dump the stream mapping */
2329     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2330     for (i = 0; i < nb_input_streams; i++) {
2331         ist = input_streams[i];
2332
2333         for (j = 0; j < ist->nb_filters; j++) {
2334             if (ist->filters[j]->graph->graph_desc) {
2335                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2336                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2337                        ist->filters[j]->name);
2338                 if (nb_filtergraphs > 1)
2339                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2340                 av_log(NULL, AV_LOG_INFO, "\n");
2341             }
2342         }
2343     }
2344
2345     for (i = 0; i < nb_output_streams; i++) {
2346         ost = output_streams[i];
2347
2348         if (ost->attachment_filename) {
2349             /* an attached file */
2350             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2351                    ost->attachment_filename, ost->file_index, ost->index);
2352             continue;
2353         }
2354
2355         if (ost->filter && ost->filter->graph->graph_desc) {
2356             /* output from a complex graph */
2357             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2358             if (nb_filtergraphs > 1)
2359                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2360
2361             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2362                    ost->index, ost->enc ? ost->enc->name : "?");
2363             continue;
2364         }
2365
2366         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2367                input_streams[ost->source_index]->file_index,
2368                input_streams[ost->source_index]->st->index,
2369                ost->file_index,
2370                ost->index);
2371         if (ost->sync_ist != input_streams[ost->source_index])
2372             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2373                    ost->sync_ist->file_index,
2374                    ost->sync_ist->st->index);
2375         if (ost->stream_copy)
2376             av_log(NULL, AV_LOG_INFO, " (copy)");
2377         else
2378             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2379                    input_streams[ost->source_index]->dec->name : "?",
2380                    ost->enc ? ost->enc->name : "?");
2381         av_log(NULL, AV_LOG_INFO, "\n");
2382     }
2383
2384     if (ret) {
2385         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2386         return ret;
2387     }
2388
2389     if (want_sdp) {
2390         print_sdp();
2391     }
2392
2393     return 0;
2394 }
2395
2396 /**
2397  * @return 1 if there are still streams where more output is wanted,
2398  *         0 otherwise
2399  */
2400 static int need_output(void)
2401 {
2402     int i;
2403
2404     for (i = 0; i < nb_output_streams; i++) {
2405         OutputStream *ost    = output_streams[i];
2406         OutputFile *of       = output_files[ost->file_index];
2407         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2408
2409         if (ost->finished ||
2410             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2411             continue;
2412         if (ost->frame_number >= ost->max_frames) {
2413             int j;
2414             for (j = 0; j < of->ctx->nb_streams; j++)
2415                 output_streams[of->ost_index + j]->finished = 1;
2416             continue;
2417         }
2418
2419         return 1;
2420     }
2421
2422     return 0;
2423 }
2424
2425 static int input_acceptable(InputStream *ist)
2426 {
2427     av_assert1(!ist->discard);
2428     return !input_files[ist->file_index]->eagain &&
2429            !input_files[ist->file_index]->eof_reached;
2430 }
2431
2432 static int find_graph_input(FilterGraph *graph)
2433 {
2434     int i, nb_req_max = 0, file_index = -1;
2435
2436     for (i = 0; i < graph->nb_inputs; i++) {
2437         int nb_req = av_buffersrc_get_nb_failed_requests(graph->inputs[i]->filter);
2438         if (nb_req > nb_req_max) {
2439             InputStream *ist = graph->inputs[i]->ist;
2440             if (input_acceptable(ist)) {
2441                 nb_req_max = nb_req;
2442                 file_index = ist->file_index;
2443             }
2444         }
2445     }
2446
2447     return file_index;
2448 }
2449
2450 /**
2451  * Select the input file to read from.
2452  *
2453  * @return  >=0 index of the input file to use;
2454  *          -1  if no file is acceptable;
2455  *          -2  to read from filters without reading from a file
2456  */
2457 static int select_input_file(void)
2458 {
2459     int i, ret, nb_active_out = nb_output_streams, ost_index = -1;
2460     int64_t opts_min;
2461     OutputStream *ost;
2462     AVFilterBufferRef *dummy;
2463
2464     for (i = 0; i < nb_output_streams; i++)
2465         nb_active_out -= output_streams[i]->unavailable =
2466             output_streams[i]->finished;
2467     while (nb_active_out) {
2468         opts_min = INT64_MAX;
2469         ost_index = -1;
2470         for (i = 0; i < nb_output_streams; i++) {
2471             OutputStream *ost = output_streams[i];
2472             int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2473                                         AV_TIME_BASE_Q);
2474             if (!ost->unavailable && opts < opts_min) {
2475                 opts_min  = opts;
2476                 ost_index = i;
2477             }
2478         }
2479         if (ost_index < 0)
2480             return -1;
2481
2482         ost = output_streams[ost_index];
2483         if (ost->source_index >= 0) {
2484             /* ost is directly connected to an input */
2485             InputStream *ist = input_streams[ost->source_index];
2486             if (input_acceptable(ist))
2487                 return ist->file_index;
2488         } else {
2489             /* ost is connected to a complex filtergraph */
2490             av_assert1(ost->filter);
2491             ret = av_buffersink_get_buffer_ref(ost->filter->filter, &dummy,
2492                                                AV_BUFFERSINK_FLAG_PEEK);
2493             if (ret >= 0)
2494                 return -2;
2495             ret = find_graph_input(ost->filter->graph);
2496             if (ret >= 0)
2497                 return ret;
2498         }
2499         ost->unavailable = 1;
2500         nb_active_out--;
2501     }
2502     return -1;
2503 }
2504
2505 static int check_keyboard_interaction(int64_t cur_time)
2506 {
2507     int i, ret, key;
2508     static int64_t last_time;
2509     if (received_nb_signals)
2510         return AVERROR_EXIT;
2511     /* read_key() returns 0 on EOF */
2512     if(cur_time - last_time >= 100000 && !run_as_daemon){
2513         key =  read_key();
2514         last_time = cur_time;
2515     }else
2516         key = -1;
2517     if (key == 'q')
2518         return AVERROR_EXIT;
2519     if (key == '+') av_log_set_level(av_log_get_level()+10);
2520     if (key == '-') av_log_set_level(av_log_get_level()-10);
2521     if (key == 's') qp_hist     ^= 1;
2522     if (key == 'h'){
2523         if (do_hex_dump){
2524             do_hex_dump = do_pkt_dump = 0;
2525         } else if(do_pkt_dump){
2526             do_hex_dump = 1;
2527         } else
2528             do_pkt_dump = 1;
2529         av_log_set_level(AV_LOG_DEBUG);
2530     }
2531     if (key == 'c' || key == 'C'){
2532         char buf[4096], target[64], command[256], arg[256] = {0};
2533         double time;
2534         int k, n = 0;
2535         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2536         i = 0;
2537         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2538             if (k > 0)
2539                 buf[i++] = k;
2540         buf[i] = 0;
2541         if (k > 0 &&
2542             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2543             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2544                    target, time, command, arg);
2545             for (i = 0; i < nb_filtergraphs; i++) {
2546                 FilterGraph *fg = filtergraphs[i];
2547                 if (fg->graph) {
2548                     if (time < 0) {
2549                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2550                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2551                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2552                     } else {
2553                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2554                     }
2555                 }
2556             }
2557         } else {
2558             av_log(NULL, AV_LOG_ERROR,
2559                    "Parse error, at least 3 arguments were expected, "
2560                    "only %d given in string '%s'\n", n, buf);
2561         }
2562     }
2563     if (key == 'd' || key == 'D'){
2564         int debug=0;
2565         if(key == 'D') {
2566             debug = input_streams[0]->st->codec->debug<<1;
2567             if(!debug) debug = 1;
2568             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2569                 debug += debug;
2570         }else
2571             if(scanf("%d", &debug)!=1)
2572                 fprintf(stderr,"error parsing debug value\n");
2573         for(i=0;i<nb_input_streams;i++) {
2574             input_streams[i]->st->codec->debug = debug;
2575         }
2576         for(i=0;i<nb_output_streams;i++) {
2577             OutputStream *ost = output_streams[i];
2578             ost->st->codec->debug = debug;
2579         }
2580         if(debug) av_log_set_level(AV_LOG_DEBUG);
2581         fprintf(stderr,"debug=%d\n", debug);
2582     }
2583     if (key == '?'){
2584         fprintf(stderr, "key    function\n"
2585                         "?      show this help\n"
2586                         "+      increase verbosity\n"
2587                         "-      decrease verbosity\n"
2588                         "c      Send command to filtergraph\n"
2589                         "D      cycle through available debug modes\n"
2590                         "h      dump packets/hex press to cycle through the 3 states\n"
2591                         "q      quit\n"
2592                         "s      Show QP histogram\n"
2593         );
2594     }
2595     return 0;
2596 }
2597
2598 #if HAVE_PTHREADS
2599 static void *input_thread(void *arg)
2600 {
2601     InputFile *f = arg;
2602     int ret = 0;
2603
2604     while (!transcoding_finished && ret >= 0) {
2605         AVPacket pkt;
2606         ret = av_read_frame(f->ctx, &pkt);
2607
2608         if (ret == AVERROR(EAGAIN)) {
2609             av_usleep(10000);
2610             ret = 0;
2611             continue;
2612         } else if (ret < 0)
2613             break;
2614
2615         pthread_mutex_lock(&f->fifo_lock);
2616         while (!av_fifo_space(f->fifo))
2617             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2618
2619         av_dup_packet(&pkt);
2620         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2621
2622         pthread_mutex_unlock(&f->fifo_lock);
2623     }
2624
2625     f->finished = 1;
2626     return NULL;
2627 }
2628
2629 static void free_input_threads(void)
2630 {
2631     int i;
2632
2633     if (nb_input_files == 1)
2634         return;
2635
2636     transcoding_finished = 1;
2637
2638     for (i = 0; i < nb_input_files; i++) {
2639         InputFile *f = input_files[i];
2640         AVPacket pkt;
2641
2642         if (!f->fifo || f->joined)
2643             continue;
2644
2645         pthread_mutex_lock(&f->fifo_lock);
2646         while (av_fifo_size(f->fifo)) {
2647             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2648             av_free_packet(&pkt);
2649         }
2650         pthread_cond_signal(&f->fifo_cond);
2651         pthread_mutex_unlock(&f->fifo_lock);
2652
2653         pthread_join(f->thread, NULL);
2654         f->joined = 1;
2655
2656         while (av_fifo_size(f->fifo)) {
2657             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2658             av_free_packet(&pkt);
2659         }
2660         av_fifo_free(f->fifo);
2661     }
2662 }
2663
2664 static int init_input_threads(void)
2665 {
2666     int i, ret;
2667
2668     if (nb_input_files == 1)
2669         return 0;
2670
2671     for (i = 0; i < nb_input_files; i++) {
2672         InputFile *f = input_files[i];
2673
2674         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2675             return AVERROR(ENOMEM);
2676
2677         pthread_mutex_init(&f->fifo_lock, NULL);
2678         pthread_cond_init (&f->fifo_cond, NULL);
2679
2680         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2681             return AVERROR(ret);
2682     }
2683     return 0;
2684 }
2685
2686 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2687 {
2688     int ret = 0;
2689
2690     pthread_mutex_lock(&f->fifo_lock);
2691
2692     if (av_fifo_size(f->fifo)) {
2693         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2694         pthread_cond_signal(&f->fifo_cond);
2695     } else {
2696         if (f->finished)
2697             ret = AVERROR_EOF;
2698         else
2699             ret = AVERROR(EAGAIN);
2700     }
2701
2702     pthread_mutex_unlock(&f->fifo_lock);
2703
2704     return ret;
2705 }
2706 #endif
2707
2708 static int get_input_packet(InputFile *f, AVPacket *pkt)
2709 {
2710 #if HAVE_PTHREADS
2711     if (nb_input_files > 1)
2712         return get_input_packet_mt(f, pkt);
2713 #endif
2714     return av_read_frame(f->ctx, pkt);
2715 }
2716
2717 static int got_eagain(void)
2718 {
2719     int i;
2720     for (i = 0; i < nb_input_files; i++)
2721         if (input_files[i]->eagain)
2722             return 1;
2723     return 0;
2724 }
2725
2726 static void reset_eagain(void)
2727 {
2728     int i;
2729     for (i = 0; i < nb_input_files; i++)
2730         input_files[i]->eagain = 0;
2731 }
2732
2733 /**
2734  * @return
2735  * - 0 -- one packet was read and processed
2736  * - AVERROR(EAGAIN) -- no packets were available for selected file,
2737  *   this function should be called again
2738  * - AVERROR_EOF -- this function should not be called again
2739  */
2740 static int process_input(void)
2741 {
2742     InputFile *ifile;
2743     AVFormatContext *is;
2744     InputStream *ist;
2745     AVPacket pkt;
2746     int ret, i, j;
2747     int file_index;
2748
2749     /* select the stream that we must read now */
2750     file_index = select_input_file();
2751     /* if none, if is finished */
2752     if (file_index == -2) {
2753         poll_filters() ;
2754         return AVERROR(EAGAIN);
2755     }
2756     if (file_index < 0) {
2757         if (got_eagain()) {
2758             reset_eagain();
2759             av_usleep(10000);
2760             return AVERROR(EAGAIN);
2761         }
2762         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
2763         return AVERROR_EOF;
2764     }
2765     ifile = input_files[file_index];
2766
2767     is  = ifile->ctx;
2768     ret = get_input_packet(ifile, &pkt);
2769
2770     if (ret == AVERROR(EAGAIN)) {
2771         ifile->eagain = 1;
2772         return ret;
2773     }
2774     if (ret < 0) {
2775         if (ret != AVERROR_EOF) {
2776             print_error(is->filename, ret);
2777             if (exit_on_error)
2778                 exit_program(1);
2779         }
2780         ifile->eof_reached = 1;
2781
2782         for (i = 0; i < ifile->nb_streams; i++) {
2783             ist = input_streams[ifile->ist_index + i];
2784             if (ist->decoding_needed)
2785                 output_packet(ist, NULL);
2786             poll_filters();
2787         }
2788
2789         for (i = 0; i < nb_output_streams; i++) {
2790             OutputStream *ost    = output_streams[i];
2791             OutputFile *of       = output_files[ost->file_index];
2792             AVFormatContext *os  = output_files[ost->file_index]->ctx;
2793
2794             if (of->shortest) {
2795                 int j;
2796                 for (j = 0; j < of->ctx->nb_streams; j++)
2797                     output_streams[of->ost_index + j]->finished = 1;
2798                 continue;
2799             }
2800         }
2801
2802         return AVERROR(EAGAIN);
2803     }
2804
2805     reset_eagain();
2806
2807     if (do_pkt_dump) {
2808         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2809                          is->streams[pkt.stream_index]);
2810     }
2811     /* the following test is needed in case new streams appear
2812        dynamically in stream : we ignore them */
2813     if (pkt.stream_index >= ifile->nb_streams) {
2814         report_new_stream(file_index, &pkt);
2815         goto discard_packet;
2816     }
2817
2818     ist = input_streams[ifile->ist_index + pkt.stream_index];
2819     if (ist->discard)
2820         goto discard_packet;
2821
2822     if(!ist->wrap_correction_done && input_files[file_index]->ctx->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
2823         uint64_t stime = av_rescale_q(input_files[file_index]->ctx->start_time, AV_TIME_BASE_Q, ist->st->time_base);
2824         uint64_t stime2= stime + (1LL<<ist->st->pts_wrap_bits);
2825         ist->wrap_correction_done = 1;
2826         if(pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime && pkt.dts - stime > stime2 - pkt.dts) {
2827             pkt.dts -= 1LL<<ist->st->pts_wrap_bits;
2828             ist->wrap_correction_done = 0;
2829         }
2830         if(pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime && pkt.pts - stime > stime2 - pkt.pts) {
2831             pkt.pts -= 1LL<<ist->st->pts_wrap_bits;
2832             ist->wrap_correction_done = 0;
2833         }
2834     }
2835
2836     if (pkt.dts != AV_NOPTS_VALUE)
2837         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2838     if (pkt.pts != AV_NOPTS_VALUE)
2839         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2840
2841     if (pkt.pts != AV_NOPTS_VALUE)
2842         pkt.pts *= ist->ts_scale;
2843     if (pkt.dts != AV_NOPTS_VALUE)
2844         pkt.dts *= ist->ts_scale;
2845
2846     if (debug_ts) {
2847         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
2848                 "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",
2849                 ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2850                 av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
2851                 av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
2852                 av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2853                 av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2854                 input_files[ist->file_index]->ts_offset);
2855     }
2856
2857     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2858         !copy_ts) {
2859         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2860         int64_t delta   = pkt_dts - ist->next_dts;
2861         if (is->iformat->flags & AVFMT_TS_DISCONT) {
2862         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2863             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2864                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2865             pkt_dts+1<ist->pts){
2866             ifile->ts_offset -= delta;
2867             av_log(NULL, AV_LOG_DEBUG,
2868                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2869                    delta, ifile->ts_offset);
2870             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2871             if (pkt.pts != AV_NOPTS_VALUE)
2872                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2873         }
2874         } else {
2875             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2876                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2877                ) {
2878                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
2879                 pkt.dts = AV_NOPTS_VALUE;
2880             }
2881             if (pkt.pts != AV_NOPTS_VALUE){
2882                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
2883                 delta   = pkt_pts - ist->next_dts;
2884                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2885                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2886                    ) {
2887                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
2888                     pkt.pts = AV_NOPTS_VALUE;
2889                 }
2890             }
2891         }
2892     }
2893
2894     sub2video_heartbeat(ist, pkt.pts);
2895
2896     if ((ret = output_packet(ist, &pkt)) < 0 ||
2897         ((ret = poll_filters()) < 0 && ret != AVERROR_EOF)) {
2898         char buf[128];
2899         av_strerror(ret, buf, sizeof(buf));
2900         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
2901                 ist->file_index, ist->st->index, buf);
2902         if (exit_on_error)
2903             exit_program(1);
2904         av_free_packet(&pkt);
2905         return AVERROR(EAGAIN);
2906     }
2907
2908 discard_packet:
2909     av_free_packet(&pkt);
2910
2911     return 0;
2912 }
2913
2914 /*
2915  * The following code is the main loop of the file converter
2916  */
2917 static int transcode(void)
2918 {
2919     int ret, i;
2920     AVFormatContext *os;
2921     OutputStream *ost;
2922     InputStream *ist;
2923     int64_t timer_start;
2924
2925     ret = transcode_init();
2926     if (ret < 0)
2927         goto fail;
2928
2929     if (stdin_interaction) {
2930         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
2931     }
2932
2933     timer_start = av_gettime();
2934
2935 #if HAVE_PTHREADS
2936     if ((ret = init_input_threads()) < 0)
2937         goto fail;
2938 #endif
2939
2940     while (!received_sigterm) {
2941         int64_t cur_time= av_gettime();
2942
2943         /* if 'q' pressed, exits */
2944         if (stdin_interaction)
2945             if (check_keyboard_interaction(cur_time) < 0)
2946                 break;
2947
2948         /* check if there's any stream where output is still needed */
2949         if (!need_output()) {
2950             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
2951             break;
2952         }
2953
2954         ret = process_input();
2955         if (ret < 0) {
2956             if (ret == AVERROR(EAGAIN))
2957                 continue;
2958             if (ret == AVERROR_EOF)
2959                 break;
2960             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
2961             break;
2962         }
2963
2964         /* dump report by using the output first video and audio streams */
2965         print_report(0, timer_start, cur_time);
2966     }
2967 #if HAVE_PTHREADS
2968     free_input_threads();
2969 #endif
2970
2971     /* at the end of stream, we must flush the decoder buffers */
2972     for (i = 0; i < nb_input_streams; i++) {
2973         ist = input_streams[i];
2974         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
2975             output_packet(ist, NULL);
2976         }
2977     }
2978     poll_filters();
2979     flush_encoders();
2980
2981     term_exit();
2982
2983     /* write the trailer if needed and close file */
2984     for (i = 0; i < nb_output_files; i++) {
2985         os = output_files[i]->ctx;
2986         av_write_trailer(os);
2987     }
2988
2989     /* dump report by using the first video and audio streams */
2990     print_report(1, timer_start, av_gettime());
2991
2992     /* close each encoder */
2993     for (i = 0; i < nb_output_streams; i++) {
2994         ost = output_streams[i];
2995         if (ost->encoding_needed) {
2996             av_freep(&ost->st->codec->stats_in);
2997             avcodec_close(ost->st->codec);
2998         }
2999     }
3000
3001     /* close each decoder */
3002     for (i = 0; i < nb_input_streams; i++) {
3003         ist = input_streams[i];
3004         if (ist->decoding_needed) {
3005             avcodec_close(ist->st->codec);
3006         }
3007     }
3008
3009     /* finished ! */
3010     ret = 0;
3011
3012  fail:
3013 #if HAVE_PTHREADS
3014     free_input_threads();
3015 #endif
3016
3017     if (output_streams) {
3018         for (i = 0; i < nb_output_streams; i++) {
3019             ost = output_streams[i];
3020             if (ost) {
3021                 if (ost->stream_copy)
3022                     av_freep(&ost->st->codec->extradata);
3023                 if (ost->logfile) {
3024                     fclose(ost->logfile);
3025                     ost->logfile = NULL;
3026                 }
3027                 av_freep(&ost->st->codec->subtitle_header);
3028                 av_free(ost->forced_kf_pts);
3029                 av_dict_free(&ost->opts);
3030             }
3031         }
3032     }
3033     return ret;
3034 }
3035
3036
3037 static int64_t getutime(void)
3038 {
3039 #if HAVE_GETRUSAGE
3040     struct rusage rusage;
3041
3042     getrusage(RUSAGE_SELF, &rusage);
3043     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3044 #elif HAVE_GETPROCESSTIMES
3045     HANDLE proc;
3046     FILETIME c, e, k, u;
3047     proc = GetCurrentProcess();
3048     GetProcessTimes(proc, &c, &e, &k, &u);
3049     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3050 #else
3051     return av_gettime();
3052 #endif
3053 }
3054
3055 static int64_t getmaxrss(void)
3056 {
3057 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3058     struct rusage rusage;
3059     getrusage(RUSAGE_SELF, &rusage);
3060     return (int64_t)rusage.ru_maxrss * 1024;
3061 #elif HAVE_GETPROCESSMEMORYINFO
3062     HANDLE proc;
3063     PROCESS_MEMORY_COUNTERS memcounters;
3064     proc = GetCurrentProcess();
3065     memcounters.cb = sizeof(memcounters);
3066     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3067     return memcounters.PeakPagefileUsage;
3068 #else
3069     return 0;
3070 #endif
3071 }
3072
3073 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3074 {
3075 }
3076
3077 static void parse_cpuflags(int argc, char **argv, const OptionDef *options)
3078 {
3079     int idx = locate_option(argc, argv, options, "cpuflags");
3080     if (idx && argv[idx + 1])
3081         opt_cpuflags("cpuflags", argv[idx + 1]);
3082 }
3083
3084 int main(int argc, char **argv)
3085 {
3086     OptionsContext o = { 0 };
3087     int64_t ti;
3088
3089     reset_options(&o, 0);
3090
3091     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3092     parse_loglevel(argc, argv, options);
3093
3094     if(argc>1 && !strcmp(argv[1], "-d")){
3095         run_as_daemon=1;
3096         av_log_set_callback(log_callback_null);
3097         argc--;
3098         argv++;
3099     }
3100
3101     avcodec_register_all();
3102 #if CONFIG_AVDEVICE
3103     avdevice_register_all();
3104 #endif
3105     avfilter_register_all();
3106     av_register_all();
3107     avformat_network_init();
3108
3109     show_banner(argc, argv, options);
3110
3111     term_init();
3112
3113     parse_cpuflags(argc, argv, options);
3114
3115     /* parse options */
3116     parse_options(&o, argc, argv, options, opt_output_file);
3117
3118     if (nb_output_files <= 0 && nb_input_files == 0) {
3119         show_usage();
3120         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3121         exit_program(1);
3122     }
3123
3124     /* file converter / grab */
3125     if (nb_output_files <= 0) {
3126         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3127         exit_program(1);
3128     }
3129
3130 //     if (nb_input_files == 0) {
3131 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3132 //         exit_program(1);
3133 //     }
3134
3135     current_time = ti = getutime();
3136     if (transcode() < 0)
3137         exit_program(1);
3138     ti = getutime() - ti;
3139     if (do_benchmark) {
3140         int maxrss = getmaxrss() / 1024;
3141         printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss);
3142     }
3143
3144     exit_program(0);
3145     return 0;
3146 }