ffmpeg: implement -force_key_frames expression evalution
[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 #if HAVE_IO_H
35 #include <io.h>
36 #endif
37 #if HAVE_UNISTD_H
38 #include <unistd.h>
39 #endif
40 #endif
41 #include "libavformat/avformat.h"
42 #include "libavdevice/avdevice.h"
43 #include "libswscale/swscale.h"
44 #include "libswresample/swresample.h"
45 #include "libavutil/opt.h"
46 #include "libavutil/channel_layout.h"
47 #include "libavutil/parseutils.h"
48 #include "libavutil/samplefmt.h"
49 #include "libavutil/colorspace.h"
50 #include "libavutil/fifo.h"
51 #include "libavutil/intreadwrite.h"
52 #include "libavutil/dict.h"
53 #include "libavutil/mathematics.h"
54 #include "libavutil/pixdesc.h"
55 #include "libavutil/avstring.h"
56 #include "libavutil/libm.h"
57 #include "libavutil/imgutils.h"
58 #include "libavutil/timestamp.h"
59 #include "libavutil/bprint.h"
60 #include "libavutil/time.h"
61 #include "libavformat/os_support.h"
62
63 #include "libavformat/ffm.h" // not public API
64
65 # include "libavfilter/avcodec.h"
66 # include "libavfilter/avfilter.h"
67 # include "libavfilter/avfiltergraph.h"
68 # include "libavfilter/buffersrc.h"
69 # include "libavfilter/buffersink.h"
70
71 #if HAVE_SYS_RESOURCE_H
72 #include <sys/time.h>
73 #include <sys/types.h>
74 #include <sys/resource.h>
75 #elif HAVE_GETPROCESSTIMES
76 #include <windows.h>
77 #endif
78 #if HAVE_GETPROCESSMEMORYINFO
79 #include <windows.h>
80 #include <psapi.h>
81 #endif
82
83 #if HAVE_SYS_SELECT_H
84 #include <sys/select.h>
85 #endif
86
87 #if HAVE_TERMIOS_H
88 #include <fcntl.h>
89 #include <sys/ioctl.h>
90 #include <sys/time.h>
91 #include <termios.h>
92 #elif HAVE_KBHIT
93 #include <conio.h>
94 #endif
95
96 #if HAVE_PTHREADS
97 #include <pthread.h>
98 #endif
99
100 #include <time.h>
101
102 #include "ffmpeg.h"
103 #include "cmdutils.h"
104
105 #include "libavutil/avassert.h"
106
107 const char program_name[] = "ffmpeg";
108 const int program_birth_year = 2000;
109
110 static FILE *vstats_file;
111
112 const char *const forced_keyframes_const_names[] = {
113     "n",
114     "n_forced",
115     "prev_forced_n",
116     "prev_forced_t",
117     "t",
118     NULL
119 };
120
121 static void do_video_stats(OutputStream *ost, int frame_size);
122 static int64_t getutime(void);
123
124 static int run_as_daemon  = 0;
125 static int64_t video_size = 0;
126 static int64_t audio_size = 0;
127 static int64_t subtitle_size = 0;
128 static int64_t extra_size = 0;
129 static int nb_frames_dup = 0;
130 static int nb_frames_drop = 0;
131
132 static int current_time;
133 AVIOContext *progress_avio = NULL;
134
135 static uint8_t *subtitle_out;
136
137 #if HAVE_PTHREADS
138 /* signal to input threads that they should exit; set by the main thread */
139 static int transcoding_finished;
140 #endif
141
142 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
143
144 InputStream **input_streams = NULL;
145 int        nb_input_streams = 0;
146 InputFile   **input_files   = NULL;
147 int        nb_input_files   = 0;
148
149 OutputStream **output_streams = NULL;
150 int         nb_output_streams = 0;
151 OutputFile   **output_files   = NULL;
152 int         nb_output_files   = 0;
153
154 FilterGraph **filtergraphs;
155 int        nb_filtergraphs;
156
157 #if HAVE_TERMIOS_H
158
159 /* init terminal so that we can grab keys */
160 static struct termios oldtty;
161 static int restore_tty;
162 #endif
163
164
165 /* sub2video hack:
166    Convert subtitles to video with alpha to insert them in filter graphs.
167    This is a temporary solution until libavfilter gets real subtitles support.
168  */
169
170
171
172 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
173                                 AVSubtitleRect *r)
174 {
175     uint32_t *pal, *dst2;
176     uint8_t *src, *src2;
177     int x, y;
178
179     if (r->type != SUBTITLE_BITMAP) {
180         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
181         return;
182     }
183     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
184         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
185         return;
186     }
187
188     dst += r->y * dst_linesize + r->x * 4;
189     src = r->pict.data[0];
190     pal = (uint32_t *)r->pict.data[1];
191     for (y = 0; y < r->h; y++) {
192         dst2 = (uint32_t *)dst;
193         src2 = src;
194         for (x = 0; x < r->w; x++)
195             *(dst2++) = pal[*(src2++)];
196         dst += dst_linesize;
197         src += r->pict.linesize[0];
198     }
199 }
200
201 static void sub2video_push_ref(InputStream *ist, int64_t pts)
202 {
203     AVFilterBufferRef *ref = ist->sub2video.ref;
204     int i;
205
206     ist->sub2video.last_pts = ref->pts = pts;
207     for (i = 0; i < ist->nb_filters; i++)
208         av_buffersrc_add_ref(ist->filters[i]->filter,
209                              avfilter_ref_buffer(ref, ~0),
210                              AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
211                              AV_BUFFERSRC_FLAG_NO_COPY |
212                              AV_BUFFERSRC_FLAG_PUSH);
213 }
214
215 static void sub2video_update(InputStream *ist, AVSubtitle *sub)
216 {
217     int w = ist->sub2video.w, h = ist->sub2video.h;
218     AVFilterBufferRef *ref = ist->sub2video.ref;
219     int8_t *dst;
220     int     dst_linesize;
221     int num_rects, i;
222     int64_t pts, end_pts;
223
224     if (!ref)
225         return;
226     if (sub) {
227         pts       = av_rescale_q(sub->pts + sub->start_display_time * 1000,
228                                  AV_TIME_BASE_Q, ist->st->time_base);
229         end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000,
230                                  AV_TIME_BASE_Q, ist->st->time_base);
231         num_rects = sub->num_rects;
232     } else {
233         pts       = ist->sub2video.end_pts;
234         end_pts   = INT64_MAX;
235         num_rects = 0;
236     }
237     dst          = ref->data    [0];
238     dst_linesize = ref->linesize[0];
239     memset(dst, 0, h * dst_linesize);
240     for (i = 0; i < num_rects; i++)
241         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
242     sub2video_push_ref(ist, pts);
243     ist->sub2video.end_pts = end_pts;
244 }
245
246 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
247 {
248     InputFile *infile = input_files[ist->file_index];
249     int i, j, nb_reqs;
250     int64_t pts2;
251
252     /* When a frame is read from a file, examine all sub2video streams in
253        the same file and send the sub2video frame again. Otherwise, decoded
254        video frames could be accumulating in the filter graph while a filter
255        (possibly overlay) is desperately waiting for a subtitle frame. */
256     for (i = 0; i < infile->nb_streams; i++) {
257         InputStream *ist2 = input_streams[infile->ist_index + i];
258         if (!ist2->sub2video.ref)
259             continue;
260         /* subtitles seem to be usually muxed ahead of other streams;
261            if not, substracting a larger time here is necessary */
262         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
263         /* do not send the heartbeat frame if the subtitle is already ahead */
264         if (pts2 <= ist2->sub2video.last_pts)
265             continue;
266         if (pts2 >= ist2->sub2video.end_pts)
267             sub2video_update(ist2, NULL);
268         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
269             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
270         if (nb_reqs)
271             sub2video_push_ref(ist2, pts2);
272     }
273 }
274
275 static void sub2video_flush(InputStream *ist)
276 {
277     int i;
278
279     for (i = 0; i < ist->nb_filters; i++)
280         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
281 }
282
283 /* end of sub2video hack */
284
285 void term_exit(void)
286 {
287     av_log(NULL, AV_LOG_QUIET, "%s", "");
288 #if HAVE_TERMIOS_H
289     if(restore_tty)
290         tcsetattr (0, TCSANOW, &oldtty);
291 #endif
292 }
293
294 static volatile int received_sigterm = 0;
295 static volatile int received_nb_signals = 0;
296
297 static void
298 sigterm_handler(int sig)
299 {
300     received_sigterm = sig;
301     received_nb_signals++;
302     term_exit();
303     if(received_nb_signals > 3)
304         exit(123);
305 }
306
307 void term_init(void)
308 {
309 #if HAVE_TERMIOS_H
310     if(!run_as_daemon){
311         struct termios tty;
312         int istty = 1;
313 #if HAVE_ISATTY
314         istty = isatty(0) && isatty(2);
315 #endif
316         if (istty && tcgetattr (0, &tty) == 0) {
317             oldtty = tty;
318             restore_tty = 1;
319             atexit(term_exit);
320
321             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
322                              |INLCR|IGNCR|ICRNL|IXON);
323             tty.c_oflag |= OPOST;
324             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
325             tty.c_cflag &= ~(CSIZE|PARENB);
326             tty.c_cflag |= CS8;
327             tty.c_cc[VMIN] = 1;
328             tty.c_cc[VTIME] = 0;
329
330             tcsetattr (0, TCSANOW, &tty);
331         }
332         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
333     }
334 #endif
335     avformat_network_deinit();
336
337     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
338     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
339 #ifdef SIGXCPU
340     signal(SIGXCPU, sigterm_handler);
341 #endif
342 }
343
344 /* read a key without blocking */
345 static int read_key(void)
346 {
347     unsigned char ch;
348 #if HAVE_TERMIOS_H
349     int n = 1;
350     struct timeval tv;
351     fd_set rfds;
352
353     FD_ZERO(&rfds);
354     FD_SET(0, &rfds);
355     tv.tv_sec = 0;
356     tv.tv_usec = 0;
357     n = select(1, &rfds, NULL, NULL, &tv);
358     if (n > 0) {
359         n = read(0, &ch, 1);
360         if (n == 1)
361             return ch;
362
363         return n;
364     }
365 #elif HAVE_KBHIT
366 #    if HAVE_PEEKNAMEDPIPE
367     static int is_pipe;
368     static HANDLE input_handle;
369     DWORD dw, nchars;
370     if(!input_handle){
371         input_handle = GetStdHandle(STD_INPUT_HANDLE);
372         is_pipe = !GetConsoleMode(input_handle, &dw);
373     }
374
375     if (stdin->_cnt > 0) {
376         read(0, &ch, 1);
377         return ch;
378     }
379     if (is_pipe) {
380         /* When running under a GUI, you will end here. */
381         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
382             // input pipe may have been closed by the program that ran ffmpeg
383             return -1;
384         }
385         //Read it
386         if(nchars != 0) {
387             read(0, &ch, 1);
388             return ch;
389         }else{
390             return -1;
391         }
392     }
393 #    endif
394     if(kbhit())
395         return(getch());
396 #endif
397     return -1;
398 }
399
400 static int decode_interrupt_cb(void *ctx)
401 {
402     return received_nb_signals > 1;
403 }
404
405 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
406
407 static void exit_program(void)
408 {
409     int i, j;
410
411     for (i = 0; i < nb_filtergraphs; i++) {
412         avfilter_graph_free(&filtergraphs[i]->graph);
413         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
414             av_freep(&filtergraphs[i]->inputs[j]->name);
415             av_freep(&filtergraphs[i]->inputs[j]);
416         }
417         av_freep(&filtergraphs[i]->inputs);
418         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
419             av_freep(&filtergraphs[i]->outputs[j]->name);
420             av_freep(&filtergraphs[i]->outputs[j]);
421         }
422         av_freep(&filtergraphs[i]->outputs);
423         av_freep(&filtergraphs[i]);
424     }
425     av_freep(&filtergraphs);
426
427     av_freep(&subtitle_out);
428
429     /* close files */
430     for (i = 0; i < nb_output_files; i++) {
431         AVFormatContext *s = output_files[i]->ctx;
432         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
433             avio_close(s->pb);
434         avformat_free_context(s);
435         av_dict_free(&output_files[i]->opts);
436         av_freep(&output_files[i]);
437     }
438     for (i = 0; i < nb_output_streams; i++) {
439         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
440         while (bsfc) {
441             AVBitStreamFilterContext *next = bsfc->next;
442             av_bitstream_filter_close(bsfc);
443             bsfc = next;
444         }
445         output_streams[i]->bitstream_filters = NULL;
446         avcodec_free_frame(&output_streams[i]->filtered_frame);
447
448         av_freep(&output_streams[i]->forced_keyframes);
449         av_expr_free(output_streams[i]->forced_keyframes_pexpr);
450         av_freep(&output_streams[i]->avfilter);
451         av_freep(&output_streams[i]->logfile_prefix);
452         av_freep(&output_streams[i]);
453     }
454     for (i = 0; i < nb_input_files; i++) {
455         avformat_close_input(&input_files[i]->ctx);
456         av_freep(&input_files[i]);
457     }
458     for (i = 0; i < nb_input_streams; i++) {
459         avcodec_free_frame(&input_streams[i]->decoded_frame);
460         av_dict_free(&input_streams[i]->opts);
461         free_buffer_pool(&input_streams[i]->buffer_pool);
462         avfilter_unref_bufferp(&input_streams[i]->sub2video.ref);
463         av_freep(&input_streams[i]->filters);
464         av_freep(&input_streams[i]);
465     }
466
467     if (vstats_file)
468         fclose(vstats_file);
469     av_free(vstats_filename);
470
471     av_freep(&input_streams);
472     av_freep(&input_files);
473     av_freep(&output_streams);
474     av_freep(&output_files);
475
476     uninit_opts();
477
478     avfilter_uninit();
479     avformat_network_deinit();
480
481     if (received_sigterm) {
482         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
483                (int) received_sigterm);
484         exit (255);
485     }
486 }
487
488 void assert_avoptions(AVDictionary *m)
489 {
490     AVDictionaryEntry *t;
491     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
492         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
493         exit(1);
494     }
495 }
496
497 static void abort_codec_experimental(AVCodec *c, int encoder)
498 {
499     exit(1);
500 }
501
502 static void update_benchmark(const char *fmt, ...)
503 {
504     if (do_benchmark_all) {
505         int64_t t = getutime();
506         va_list va;
507         char buf[1024];
508
509         if (fmt) {
510             va_start(va, fmt);
511             vsnprintf(buf, sizeof(buf), fmt, va);
512             va_end(va);
513             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
514         }
515         current_time = t;
516     }
517 }
518
519 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
520 {
521     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
522     AVCodecContext          *avctx = ost->st->codec;
523     int ret;
524
525     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
526         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
527         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
528
529     if ((avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) && pkt->dts != AV_NOPTS_VALUE) {
530         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
531         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
532             av_log(s, max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG,
533                    "st:%d PTS: %"PRId64" DTS: %"PRId64" < %"PRId64" invalid, clipping\n", pkt->stream_index, pkt->pts, pkt->dts, max);
534             if(pkt->pts >= pkt->dts)
535                 pkt->pts = FFMAX(pkt->pts, max);
536             pkt->dts = max;
537         }
538     }
539
540     /*
541      * Audio encoders may split the packets --  #frames in != #packets out.
542      * But there is no reordering, so we can limit the number of output packets
543      * by simply dropping them here.
544      * Counting encoded video frames needs to be done separately because of
545      * reordering, see do_video_out()
546      */
547     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
548         if (ost->frame_number >= ost->max_frames) {
549             av_free_packet(pkt);
550             return;
551         }
552         ost->frame_number++;
553     }
554
555     while (bsfc) {
556         AVPacket new_pkt = *pkt;
557         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
558                                            &new_pkt.data, &new_pkt.size,
559                                            pkt->data, pkt->size,
560                                            pkt->flags & AV_PKT_FLAG_KEY);
561         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
562             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
563             if(t) {
564                 memcpy(t, new_pkt.data, new_pkt.size);
565                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
566                 new_pkt.data = t;
567                 a = 1;
568             } else
569                 a = AVERROR(ENOMEM);
570         }
571         if (a > 0) {
572             av_free_packet(pkt);
573             new_pkt.destruct = av_destruct_packet;
574         } else if (a < 0) {
575             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
576                    bsfc->filter->name, pkt->stream_index,
577                    avctx->codec ? avctx->codec->name : "copy");
578             print_error("", a);
579             if (exit_on_error)
580                 exit(1);
581         }
582         *pkt = new_pkt;
583
584         bsfc = bsfc->next;
585     }
586
587     pkt->stream_index = ost->index;
588
589     if (debug_ts) {
590         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
591                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
592                 av_get_media_type_string(ost->st->codec->codec_type),
593                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
594                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
595                 pkt->size
596               );
597     }
598
599     ret = av_interleaved_write_frame(s, pkt);
600     if (ret < 0) {
601         print_error("av_interleaved_write_frame()", ret);
602         exit(1);
603     }
604 }
605
606 static void close_output_stream(OutputStream *ost)
607 {
608     OutputFile *of = output_files[ost->file_index];
609
610     ost->finished = 1;
611     if (of->shortest) {
612         int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, AV_TIME_BASE_Q);
613         of->recording_time = FFMIN(of->recording_time, end);
614     }
615 }
616
617 static int check_recording_time(OutputStream *ost)
618 {
619     OutputFile *of = output_files[ost->file_index];
620
621     if (of->recording_time != INT64_MAX &&
622         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
623                       AV_TIME_BASE_Q) >= 0) {
624         close_output_stream(ost);
625         return 0;
626     }
627     return 1;
628 }
629
630 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
631                          AVFrame *frame)
632 {
633     AVCodecContext *enc = ost->st->codec;
634     AVPacket pkt;
635     int got_packet = 0;
636
637     av_init_packet(&pkt);
638     pkt.data = NULL;
639     pkt.size = 0;
640
641     if (!check_recording_time(ost))
642         return;
643
644     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
645         frame->pts = ost->sync_opts;
646     ost->sync_opts = frame->pts + frame->nb_samples;
647
648     av_assert0(pkt.size || !pkt.data);
649     update_benchmark(NULL);
650     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
651         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
652         exit(1);
653     }
654     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
655
656     if (got_packet) {
657         if (pkt.pts != AV_NOPTS_VALUE)
658             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
659         if (pkt.dts != AV_NOPTS_VALUE)
660             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
661         if (pkt.duration > 0)
662             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
663
664         if (debug_ts) {
665             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
666                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
667                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
668                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
669         }
670
671         audio_size += pkt.size;
672         write_frame(s, &pkt, ost);
673
674         av_free_packet(&pkt);
675     }
676 }
677
678 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
679 {
680     AVCodecContext *dec;
681     AVPicture *picture2;
682     AVPicture picture_tmp;
683     uint8_t *buf = 0;
684
685     dec = ist->st->codec;
686
687     /* deinterlace : must be done before any resize */
688     if (do_deinterlace) {
689         int size;
690
691         /* create temporary picture */
692         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
693         if (size < 0)
694             return;
695         buf  = av_malloc(size);
696         if (!buf)
697             return;
698
699         picture2 = &picture_tmp;
700         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
701
702         if (avpicture_deinterlace(picture2, picture,
703                                  dec->pix_fmt, dec->width, dec->height) < 0) {
704             /* if error, do not deinterlace */
705             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
706             av_free(buf);
707             buf = NULL;
708             picture2 = picture;
709         }
710     } else {
711         picture2 = picture;
712     }
713
714     if (picture != picture2)
715         *picture = *picture2;
716     *bufp = buf;
717 }
718
719 static void do_subtitle_out(AVFormatContext *s,
720                             OutputStream *ost,
721                             InputStream *ist,
722                             AVSubtitle *sub)
723 {
724     int subtitle_out_max_size = 1024 * 1024;
725     int subtitle_out_size, nb, i;
726     AVCodecContext *enc;
727     AVPacket pkt;
728     int64_t pts;
729
730     if (sub->pts == AV_NOPTS_VALUE) {
731         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
732         if (exit_on_error)
733             exit(1);
734         return;
735     }
736
737     enc = ost->st->codec;
738
739     if (!subtitle_out) {
740         subtitle_out = av_malloc(subtitle_out_max_size);
741     }
742
743     /* Note: DVB subtitle need one packet to draw them and one other
744        packet to clear them */
745     /* XXX: signal it in the codec context ? */
746     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
747         nb = 2;
748     else
749         nb = 1;
750
751     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
752     pts = sub->pts - output_files[ost->file_index]->start_time;
753     for (i = 0; i < nb; i++) {
754         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
755         if (!check_recording_time(ost))
756             return;
757
758         sub->pts = pts;
759         // start_display_time is required to be 0
760         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
761         sub->end_display_time  -= sub->start_display_time;
762         sub->start_display_time = 0;
763         if (i == 1)
764             sub->num_rects = 0;
765         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
766                                                     subtitle_out_max_size, sub);
767         if (subtitle_out_size < 0) {
768             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
769             exit(1);
770         }
771
772         av_init_packet(&pkt);
773         pkt.data = subtitle_out;
774         pkt.size = subtitle_out_size;
775         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
776         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
777         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
778             /* XXX: the pts correction is handled here. Maybe handling
779                it in the codec would be better */
780             if (i == 0)
781                 pkt.pts += 90 * sub->start_display_time;
782             else
783                 pkt.pts += 90 * sub->end_display_time;
784         }
785         subtitle_size += pkt.size;
786         write_frame(s, &pkt, ost);
787     }
788 }
789
790 static void do_video_out(AVFormatContext *s,
791                          OutputStream *ost,
792                          AVFrame *in_picture)
793 {
794     int ret, format_video_sync;
795     AVPacket pkt;
796     AVCodecContext *enc = ost->st->codec;
797     int nb_frames, i;
798     double sync_ipts, delta;
799     double duration = 0;
800     int frame_size = 0;
801     InputStream *ist = NULL;
802
803     if (ost->source_index >= 0)
804         ist = input_streams[ost->source_index];
805
806     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
807         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
808
809     sync_ipts = in_picture->pts;
810     delta = sync_ipts - ost->sync_opts + duration;
811
812     /* by default, we output a single frame */
813     nb_frames = 1;
814
815     format_video_sync = video_sync_method;
816     if (format_video_sync == VSYNC_AUTO)
817         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
818
819     switch (format_video_sync) {
820     case VSYNC_CFR:
821         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
822         if (delta < -1.1)
823             nb_frames = 0;
824         else if (delta > 1.1)
825             nb_frames = lrintf(delta);
826         break;
827     case VSYNC_VFR:
828         if (delta <= -0.6)
829             nb_frames = 0;
830         else if (delta > 0.6)
831             ost->sync_opts = lrint(sync_ipts);
832         break;
833     case VSYNC_DROP:
834     case VSYNC_PASSTHROUGH:
835         ost->sync_opts = lrint(sync_ipts);
836         break;
837     default:
838         av_assert0(0);
839     }
840
841     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
842     if (nb_frames == 0) {
843         nb_frames_drop++;
844         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
845         return;
846     } else if (nb_frames > 1) {
847         if (nb_frames > dts_error_threshold * 30) {
848             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
849             nb_frames_drop++;
850             return;
851         }
852         nb_frames_dup += nb_frames - 1;
853         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
854     }
855
856   /* duplicates frame if needed */
857   for (i = 0; i < nb_frames; i++) {
858     av_init_packet(&pkt);
859     pkt.data = NULL;
860     pkt.size = 0;
861
862     in_picture->pts = ost->sync_opts;
863
864     if (!check_recording_time(ost))
865         return;
866
867     if (s->oformat->flags & AVFMT_RAWPICTURE &&
868         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
869         /* raw pictures are written as AVPicture structure to
870            avoid any copies. We support temporarily the older
871            method. */
872         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
873         enc->coded_frame->top_field_first  = in_picture->top_field_first;
874         if (enc->coded_frame->interlaced_frame)
875             enc->field_order = enc->coded_frame->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
876         else
877             enc->field_order = AV_FIELD_PROGRESSIVE;
878         pkt.data   = (uint8_t *)in_picture;
879         pkt.size   =  sizeof(AVPicture);
880         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
881         pkt.flags |= AV_PKT_FLAG_KEY;
882
883         video_size += pkt.size;
884         write_frame(s, &pkt, ost);
885     } else {
886         int got_packet, forced_keyframe = 0;
887         AVFrame big_picture;
888         double pts_time;
889
890         big_picture = *in_picture;
891         /* better than nothing: use input picture interlaced
892            settings */
893         big_picture.interlaced_frame = in_picture->interlaced_frame;
894         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
895             if (ost->top_field_first == -1)
896                 big_picture.top_field_first = in_picture->top_field_first;
897             else
898                 big_picture.top_field_first = !!ost->top_field_first;
899         }
900
901         if (big_picture.interlaced_frame) {
902             if (enc->codec->id == AV_CODEC_ID_MJPEG)
903                 enc->field_order = big_picture.top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
904             else
905                 enc->field_order = big_picture.top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
906         } else
907             enc->field_order = AV_FIELD_PROGRESSIVE;
908
909         big_picture.quality = ost->st->codec->global_quality;
910         if (!enc->me_threshold)
911             big_picture.pict_type = 0;
912
913         pts_time = big_picture.pts != AV_NOPTS_VALUE ?
914             big_picture.pts * av_q2d(enc->time_base) : NAN;
915         if (ost->forced_kf_index < ost->forced_kf_count &&
916             big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
917             ost->forced_kf_index++;
918             forced_keyframe = 1;
919         } else if (ost->forced_keyframes_pexpr) {
920             double res;
921             ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
922             res = av_expr_eval(ost->forced_keyframes_pexpr,
923                                ost->forced_keyframes_expr_const_values, NULL);
924             av_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
925                     ost->forced_keyframes_expr_const_values[FKF_N],
926                     ost->forced_keyframes_expr_const_values[FKF_N_FORCED],
927                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N],
928                     ost->forced_keyframes_expr_const_values[FKF_T],
929                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T],
930                     res);
931             if (res) {
932                 forced_keyframe = 1;
933                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] =
934                     ost->forced_keyframes_expr_const_values[FKF_N];
935                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] =
936                     ost->forced_keyframes_expr_const_values[FKF_T];
937                 ost->forced_keyframes_expr_const_values[FKF_N_FORCED] += 1;
938             }
939
940             ost->forced_keyframes_expr_const_values[FKF_N] += 1;
941         }
942         if (forced_keyframe) {
943             big_picture.pict_type = AV_PICTURE_TYPE_I;
944             av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
945         }
946
947         update_benchmark(NULL);
948         ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
949         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
950         if (ret < 0) {
951             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
952             exit(1);
953         }
954
955         if (got_packet) {
956             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
957                 pkt.pts = ost->sync_opts;
958
959             if (pkt.pts != AV_NOPTS_VALUE)
960                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
961             if (pkt.dts != AV_NOPTS_VALUE)
962                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
963
964             if (debug_ts) {
965                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
966                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
967                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
968                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
969             }
970
971             frame_size = pkt.size;
972             video_size += pkt.size;
973             write_frame(s, &pkt, ost);
974             av_free_packet(&pkt);
975
976             /* if two pass, output log */
977             if (ost->logfile && enc->stats_out) {
978                 fprintf(ost->logfile, "%s", enc->stats_out);
979             }
980         }
981     }
982     ost->sync_opts++;
983     /*
984      * For video, number of frames in == number of packets out.
985      * But there may be reordering, so we can't throw away frames on encoder
986      * flush, we need to limit them here, before they go into encoder.
987      */
988     ost->frame_number++;
989   }
990
991     if (vstats_filename && frame_size)
992         do_video_stats(ost, frame_size);
993 }
994
995 static double psnr(double d)
996 {
997     return -10.0 * log(d) / log(10.0);
998 }
999
1000 static void do_video_stats(OutputStream *ost, int frame_size)
1001 {
1002     AVCodecContext *enc;
1003     int frame_number;
1004     double ti1, bitrate, avg_bitrate;
1005
1006     /* this is executed just the first time do_video_stats is called */
1007     if (!vstats_file) {
1008         vstats_file = fopen(vstats_filename, "w");
1009         if (!vstats_file) {
1010             perror("fopen");
1011             exit(1);
1012         }
1013     }
1014
1015     enc = ost->st->codec;
1016     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1017         frame_number = ost->st->nb_frames;
1018         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1019         if (enc->flags&CODEC_FLAG_PSNR)
1020             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1021
1022         fprintf(vstats_file,"f_size= %6d ", frame_size);
1023         /* compute pts value */
1024         ti1 = ost->st->pts.val * av_q2d(enc->time_base);
1025         if (ti1 < 0.01)
1026             ti1 = 0.01;
1027
1028         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1029         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1030         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1031                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1032         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1033     }
1034 }
1035
1036 /**
1037  * Get and encode new output from any of the filtergraphs, without causing
1038  * activity.
1039  *
1040  * @return  0 for success, <0 for severe errors
1041  */
1042 static int reap_filters(void)
1043 {
1044     AVFilterBufferRef *picref;
1045     AVFrame *filtered_frame = NULL;
1046     int i;
1047     int64_t frame_pts;
1048
1049     /* Reap all buffers present in the buffer sinks */
1050     for (i = 0; i < nb_output_streams; i++) {
1051         OutputStream *ost = output_streams[i];
1052         OutputFile    *of = output_files[ost->file_index];
1053         int ret = 0;
1054
1055         if (!ost->filter)
1056             continue;
1057
1058         if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1059             return AVERROR(ENOMEM);
1060         } else
1061             avcodec_get_frame_defaults(ost->filtered_frame);
1062         filtered_frame = ost->filtered_frame;
1063
1064         while (1) {
1065             ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
1066                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1067             if (ret < 0) {
1068                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1069                     char buf[256];
1070                     av_strerror(ret, buf, sizeof(buf));
1071                     av_log(NULL, AV_LOG_WARNING,
1072                            "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
1073                 }
1074                 break;
1075             }
1076             frame_pts = AV_NOPTS_VALUE;
1077             if (picref->pts != AV_NOPTS_VALUE) {
1078                 filtered_frame->pts = frame_pts = av_rescale_q(picref->pts,
1079                                                 ost->filter->filter->inputs[0]->time_base,
1080                                                 ost->st->codec->time_base) -
1081                                     av_rescale_q(of->start_time,
1082                                                 AV_TIME_BASE_Q,
1083                                                 ost->st->codec->time_base);
1084
1085                 if (of->start_time && filtered_frame->pts < 0) {
1086                     avfilter_unref_buffer(picref);
1087                     continue;
1088                 }
1089             }
1090             //if (ost->source_index >= 0)
1091             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1092
1093
1094             switch (ost->filter->filter->inputs[0]->type) {
1095             case AVMEDIA_TYPE_VIDEO:
1096                 avfilter_copy_buf_props(filtered_frame, picref);
1097                 filtered_frame->pts = frame_pts;
1098                 if (!ost->frame_aspect_ratio)
1099                     ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
1100
1101                 do_video_out(of->ctx, ost, filtered_frame);
1102                 break;
1103             case AVMEDIA_TYPE_AUDIO:
1104                 avfilter_copy_buf_props(filtered_frame, picref);
1105                 filtered_frame->pts = frame_pts;
1106                 do_audio_out(of->ctx, ost, filtered_frame);
1107                 break;
1108             default:
1109                 // TODO support subtitle filters
1110                 av_assert0(0);
1111             }
1112
1113             avfilter_unref_buffer(picref);
1114         }
1115     }
1116
1117     return 0;
1118 }
1119
1120 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1121 {
1122     char buf[1024];
1123     AVBPrint buf_script;
1124     OutputStream *ost;
1125     AVFormatContext *oc;
1126     int64_t total_size;
1127     AVCodecContext *enc;
1128     int frame_number, vid, i;
1129     double bitrate;
1130     int64_t pts = INT64_MIN;
1131     static int64_t last_time = -1;
1132     static int qp_histogram[52];
1133     int hours, mins, secs, us;
1134
1135     if (!print_stats && !is_last_report && !progress_avio)
1136         return;
1137
1138     if (!is_last_report) {
1139         if (last_time == -1) {
1140             last_time = cur_time;
1141             return;
1142         }
1143         if ((cur_time - last_time) < 500000)
1144             return;
1145         last_time = cur_time;
1146     }
1147
1148
1149     oc = output_files[0]->ctx;
1150
1151     total_size = avio_size(oc->pb);
1152     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1153         total_size = avio_tell(oc->pb);
1154
1155     buf[0] = '\0';
1156     vid = 0;
1157     av_bprint_init(&buf_script, 0, 1);
1158     for (i = 0; i < nb_output_streams; i++) {
1159         float q = -1;
1160         ost = output_streams[i];
1161         enc = ost->st->codec;
1162         if (!ost->stream_copy && enc->coded_frame)
1163             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1164         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1165             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1166             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1167                        ost->file_index, ost->index, q);
1168         }
1169         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1170             float fps, t = (cur_time-timer_start) / 1000000.0;
1171
1172             frame_number = ost->frame_number;
1173             fps = t > 1 ? frame_number / t : 0;
1174             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1175                      frame_number, fps < 9.95, fps, q);
1176             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1177             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1178             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1179                        ost->file_index, ost->index, q);
1180             if (is_last_report)
1181                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1182             if (qp_hist) {
1183                 int j;
1184                 int qp = lrintf(q);
1185                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1186                     qp_histogram[qp]++;
1187                 for (j = 0; j < 32; j++)
1188                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1189             }
1190             if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1191                 int j;
1192                 double error, error_sum = 0;
1193                 double scale, scale_sum = 0;
1194                 double p;
1195                 char type[3] = { 'Y','U','V' };
1196                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1197                 for (j = 0; j < 3; j++) {
1198                     if (is_last_report) {
1199                         error = enc->error[j];
1200                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1201                     } else {
1202                         error = enc->coded_frame->error[j];
1203                         scale = enc->width * enc->height * 255.0 * 255.0;
1204                     }
1205                     if (j)
1206                         scale /= 4;
1207                     error_sum += error;
1208                     scale_sum += scale;
1209                     p = psnr(error / scale);
1210                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1211                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1212                                ost->file_index, ost->index, type[i] | 32, p);
1213                 }
1214                 p = psnr(error_sum / scale_sum);
1215                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1216                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1217                            ost->file_index, ost->index, p);
1218             }
1219             vid = 1;
1220         }
1221         /* compute min output value */
1222         if ((is_last_report || !ost->finished) && ost->st->pts.val != AV_NOPTS_VALUE)
1223             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1224                                           ost->st->time_base, AV_TIME_BASE_Q));
1225     }
1226
1227     secs = pts / AV_TIME_BASE;
1228     us = pts % AV_TIME_BASE;
1229     mins = secs / 60;
1230     secs %= 60;
1231     hours = mins / 60;
1232     mins %= 60;
1233
1234     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1235
1236     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1237                                  "size=N/A time=");
1238     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1239                                  "size=%8.0fkB time=", total_size / 1024.0);
1240     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1241              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1242              (100 * us) / AV_TIME_BASE);
1243     if (bitrate < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1244                               "bitrate=N/A");
1245     else             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1246                               "bitrate=%6.1fkbits/s", bitrate);
1247     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
1248     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1249     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1250     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1251                hours, mins, secs, us);
1252
1253     if (nb_frames_dup || nb_frames_drop)
1254         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1255                 nb_frames_dup, nb_frames_drop);
1256     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1257     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1258
1259     if (print_stats || is_last_report) {
1260     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1261
1262     fflush(stderr);
1263     }
1264
1265     if (progress_avio) {
1266         av_bprintf(&buf_script, "progress=%s\n",
1267                    is_last_report ? "end" : "continue");
1268         avio_write(progress_avio, buf_script.str,
1269                    FFMIN(buf_script.len, buf_script.size - 1));
1270         avio_flush(progress_avio);
1271         av_bprint_finalize(&buf_script, NULL);
1272         if (is_last_report) {
1273             avio_close(progress_avio);
1274             progress_avio = NULL;
1275         }
1276     }
1277
1278     if (is_last_report) {
1279         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1280         av_log(NULL, AV_LOG_INFO, "\n");
1281         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1282                video_size / 1024.0,
1283                audio_size / 1024.0,
1284                subtitle_size / 1024.0,
1285                extra_size / 1024.0,
1286                100.0 * (total_size - raw) / raw
1287         );
1288         if(video_size + audio_size + subtitle_size + extra_size == 0){
1289             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1290         }
1291     }
1292 }
1293
1294 static void flush_encoders(void)
1295 {
1296     int i, ret;
1297
1298     for (i = 0; i < nb_output_streams; i++) {
1299         OutputStream   *ost = output_streams[i];
1300         AVCodecContext *enc = ost->st->codec;
1301         AVFormatContext *os = output_files[ost->file_index]->ctx;
1302         int stop_encoding = 0;
1303
1304         if (!ost->encoding_needed)
1305             continue;
1306
1307         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1308             continue;
1309         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1310             continue;
1311
1312         for (;;) {
1313             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1314             const char *desc;
1315             int64_t *size;
1316
1317             switch (ost->st->codec->codec_type) {
1318             case AVMEDIA_TYPE_AUDIO:
1319                 encode = avcodec_encode_audio2;
1320                 desc   = "Audio";
1321                 size   = &audio_size;
1322                 break;
1323             case AVMEDIA_TYPE_VIDEO:
1324                 encode = avcodec_encode_video2;
1325                 desc   = "Video";
1326                 size   = &video_size;
1327                 break;
1328             default:
1329                 stop_encoding = 1;
1330             }
1331
1332             if (encode) {
1333                 AVPacket pkt;
1334                 int got_packet;
1335                 av_init_packet(&pkt);
1336                 pkt.data = NULL;
1337                 pkt.size = 0;
1338
1339                 update_benchmark(NULL);
1340                 ret = encode(enc, &pkt, NULL, &got_packet);
1341                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1342                 if (ret < 0) {
1343                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1344                     exit(1);
1345                 }
1346                 *size += pkt.size;
1347                 if (ost->logfile && enc->stats_out) {
1348                     fprintf(ost->logfile, "%s", enc->stats_out);
1349                 }
1350                 if (!got_packet) {
1351                     stop_encoding = 1;
1352                     break;
1353                 }
1354                 if (pkt.pts != AV_NOPTS_VALUE)
1355                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1356                 if (pkt.dts != AV_NOPTS_VALUE)
1357                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1358                 if (pkt.duration > 0)
1359                     pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1360                 write_frame(os, &pkt, ost);
1361                 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
1362                     do_video_stats(ost, pkt.size);
1363                 }
1364             }
1365
1366             if (stop_encoding)
1367                 break;
1368         }
1369     }
1370 }
1371
1372 /*
1373  * Check whether a packet from ist should be written into ost at this time
1374  */
1375 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1376 {
1377     OutputFile *of = output_files[ost->file_index];
1378     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1379
1380     if (ost->source_index != ist_index)
1381         return 0;
1382
1383     if (of->start_time && ist->pts < of->start_time)
1384         return 0;
1385
1386     return 1;
1387 }
1388
1389 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1390 {
1391     OutputFile *of = output_files[ost->file_index];
1392     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1393     AVPicture pict;
1394     AVPacket opkt;
1395
1396     av_init_packet(&opkt);
1397
1398     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1399         !ost->copy_initial_nonkeyframes)
1400         return;
1401
1402     if (!ost->frame_number && ist->pts < of->start_time &&
1403         !ost->copy_prior_start)
1404         return;
1405
1406     if (of->recording_time != INT64_MAX &&
1407         ist->pts >= of->recording_time + of->start_time) {
1408         close_output_stream(ost);
1409         return;
1410     }
1411
1412     /* force the input stream PTS */
1413     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1414         audio_size += pkt->size;
1415     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1416         video_size += pkt->size;
1417         ost->sync_opts++;
1418     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1419         subtitle_size += pkt->size;
1420     }
1421
1422     if (pkt->pts != AV_NOPTS_VALUE)
1423         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1424     else
1425         opkt.pts = AV_NOPTS_VALUE;
1426
1427     if (pkt->dts == AV_NOPTS_VALUE)
1428         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1429     else
1430         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1431     opkt.dts -= ost_tb_start_time;
1432
1433     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1434         int duration = av_get_audio_frame_duration(ist->st->codec, pkt->size);
1435         if(!duration)
1436             duration = ist->st->codec->frame_size;
1437         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1438                                                (AVRational){1, ist->st->codec->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
1439                                                ost->st->time_base) - ost_tb_start_time;
1440     }
1441
1442     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1443     opkt.flags    = pkt->flags;
1444
1445     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1446     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1447        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1448        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1449        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1450        ) {
1451         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1452             opkt.destruct = av_destruct_packet;
1453     } else {
1454         opkt.data = pkt->data;
1455         opkt.size = pkt->size;
1456     }
1457
1458     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1459         /* store AVPicture in AVPacket, as expected by the output format */
1460         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1461         opkt.data = (uint8_t *)&pict;
1462         opkt.size = sizeof(AVPicture);
1463         opkt.flags |= AV_PKT_FLAG_KEY;
1464     }
1465
1466     write_frame(of->ctx, &opkt, ost);
1467     ost->st->codec->frame_number++;
1468 }
1469
1470 static void rate_emu_sleep(InputStream *ist)
1471 {
1472     if (input_files[ist->file_index]->rate_emu) {
1473         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
1474         int64_t now = av_gettime() - ist->start;
1475         if (pts > now)
1476             av_usleep(pts - now);
1477     }
1478 }
1479
1480 int guess_input_channel_layout(InputStream *ist)
1481 {
1482     AVCodecContext *dec = ist->st->codec;
1483
1484     if (!dec->channel_layout) {
1485         char layout_name[256];
1486
1487         if (dec->channels > ist->guess_layout_max)
1488             return 0;
1489         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1490         if (!dec->channel_layout)
1491             return 0;
1492         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1493                                      dec->channels, dec->channel_layout);
1494         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1495                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1496     }
1497     return 1;
1498 }
1499
1500 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1501 {
1502     AVFrame *decoded_frame;
1503     AVCodecContext *avctx = ist->st->codec;
1504     int i, ret, resample_changed;
1505     AVRational decoded_frame_tb;
1506
1507     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1508         return AVERROR(ENOMEM);
1509     decoded_frame = ist->decoded_frame;
1510
1511     update_benchmark(NULL);
1512     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1513     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1514
1515     if (ret >= 0 && avctx->sample_rate <= 0) {
1516         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1517         ret = AVERROR_INVALIDDATA;
1518     }
1519
1520     if (!*got_output || ret < 0) {
1521         if (!pkt->size) {
1522             for (i = 0; i < ist->nb_filters; i++)
1523                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1524         }
1525         return ret;
1526     }
1527
1528 #if 1
1529     /* increment next_dts to use for the case where the input stream does not
1530        have timestamps or there are multiple frames in the packet */
1531     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1532                      avctx->sample_rate;
1533     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1534                      avctx->sample_rate;
1535 #endif
1536
1537     rate_emu_sleep(ist);
1538
1539     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1540                        ist->resample_channels       != avctx->channels               ||
1541                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1542                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1543     if (resample_changed) {
1544         char layout1[64], layout2[64];
1545
1546         if (!guess_input_channel_layout(ist)) {
1547             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1548                    "layout for Input Stream #%d.%d\n", ist->file_index,
1549                    ist->st->index);
1550             exit(1);
1551         }
1552         decoded_frame->channel_layout = avctx->channel_layout;
1553
1554         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1555                                      ist->resample_channel_layout);
1556         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1557                                      decoded_frame->channel_layout);
1558
1559         av_log(NULL, AV_LOG_INFO,
1560                "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",
1561                ist->file_index, ist->st->index,
1562                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1563                ist->resample_channels, layout1,
1564                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1565                avctx->channels, layout2);
1566
1567         ist->resample_sample_fmt     = decoded_frame->format;
1568         ist->resample_sample_rate    = decoded_frame->sample_rate;
1569         ist->resample_channel_layout = decoded_frame->channel_layout;
1570         ist->resample_channels       = avctx->channels;
1571
1572         for (i = 0; i < nb_filtergraphs; i++)
1573             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1574                 FilterGraph *fg = filtergraphs[i];
1575                 int j;
1576                 if (configure_filtergraph(fg) < 0) {
1577                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1578                     exit(1);
1579                 }
1580                 for (j = 0; j < fg->nb_outputs; j++) {
1581                     OutputStream *ost = fg->outputs[j]->ost;
1582                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1583                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1584                         av_buffersink_set_frame_size(ost->filter->filter,
1585                                                      ost->st->codec->frame_size);
1586                 }
1587             }
1588     }
1589
1590     /* if the decoder provides a pts, use it instead of the last packet pts.
1591        the decoder could be delaying output by a packet or more. */
1592     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1593         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1594         decoded_frame_tb   = avctx->time_base;
1595     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1596         decoded_frame->pts = decoded_frame->pkt_pts;
1597         pkt->pts           = AV_NOPTS_VALUE;
1598         decoded_frame_tb   = ist->st->time_base;
1599     } else if (pkt->pts != AV_NOPTS_VALUE) {
1600         decoded_frame->pts = pkt->pts;
1601         pkt->pts           = AV_NOPTS_VALUE;
1602         decoded_frame_tb   = ist->st->time_base;
1603     }else {
1604         decoded_frame->pts = ist->dts;
1605         decoded_frame_tb   = AV_TIME_BASE_Q;
1606     }
1607     if (decoded_frame->pts != AV_NOPTS_VALUE)
1608         decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
1609                                               (AVRational){1, ist->st->codec->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
1610                                               (AVRational){1, ist->st->codec->sample_rate});
1611     for (i = 0; i < ist->nb_filters; i++)
1612         av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame,
1613                                AV_BUFFERSRC_FLAG_PUSH);
1614
1615     decoded_frame->pts = AV_NOPTS_VALUE;
1616
1617     return ret;
1618 }
1619
1620 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1621 {
1622     AVFrame *decoded_frame;
1623     void *buffer_to_free = NULL;
1624     int i, ret = 0, resample_changed;
1625     int64_t best_effort_timestamp;
1626     AVRational *frame_sample_aspect;
1627
1628     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1629         return AVERROR(ENOMEM);
1630     decoded_frame = ist->decoded_frame;
1631     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1632
1633     update_benchmark(NULL);
1634     ret = avcodec_decode_video2(ist->st->codec,
1635                                 decoded_frame, got_output, pkt);
1636     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1637     if (!*got_output || ret < 0) {
1638         if (!pkt->size) {
1639             for (i = 0; i < ist->nb_filters; i++)
1640                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1641         }
1642         return ret;
1643     }
1644
1645     if(ist->top_field_first>=0)
1646         decoded_frame->top_field_first = ist->top_field_first;
1647
1648     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1649     if(best_effort_timestamp != AV_NOPTS_VALUE)
1650         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1651
1652     if (debug_ts) {
1653         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1654                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1655                 ist->st->index, av_ts2str(decoded_frame->pts),
1656                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1657                 best_effort_timestamp,
1658                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1659                 decoded_frame->key_frame, decoded_frame->pict_type);
1660     }
1661
1662     pkt->size = 0;
1663     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1664
1665     rate_emu_sleep(ist);
1666
1667     if (ist->st->sample_aspect_ratio.num)
1668         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1669
1670     resample_changed = ist->resample_width   != decoded_frame->width  ||
1671                        ist->resample_height  != decoded_frame->height ||
1672                        ist->resample_pix_fmt != decoded_frame->format;
1673     if (resample_changed) {
1674         av_log(NULL, AV_LOG_INFO,
1675                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1676                ist->file_index, ist->st->index,
1677                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1678                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1679
1680         ist->resample_width   = decoded_frame->width;
1681         ist->resample_height  = decoded_frame->height;
1682         ist->resample_pix_fmt = decoded_frame->format;
1683
1684         for (i = 0; i < nb_filtergraphs; i++) {
1685             if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
1686                 configure_filtergraph(filtergraphs[i]) < 0) {
1687                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1688                 exit(1);
1689             }
1690         }
1691     }
1692
1693     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1694     for (i = 0; i < ist->nb_filters; i++) {
1695         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
1696                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
1697                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
1698
1699         if (!frame_sample_aspect->num)
1700             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1701         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
1702             FrameBuffer      *buf = decoded_frame->opaque;
1703             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1704                                         decoded_frame->data, decoded_frame->linesize,
1705                                         AV_PERM_READ | AV_PERM_PRESERVE,
1706                                         ist->st->codec->width, ist->st->codec->height,
1707                                         ist->st->codec->pix_fmt);
1708
1709             avfilter_copy_frame_props(fb, decoded_frame);
1710             fb->buf->priv           = buf;
1711             fb->buf->free           = filter_release_buffer;
1712
1713             av_assert0(buf->refcount>0);
1714             buf->refcount++;
1715             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
1716                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
1717                                  AV_BUFFERSRC_FLAG_NO_COPY |
1718                                  AV_BUFFERSRC_FLAG_PUSH);
1719         } else
1720         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, AV_BUFFERSRC_FLAG_PUSH)<0) {
1721             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
1722             exit(1);
1723         }
1724
1725     }
1726
1727     av_free(buffer_to_free);
1728     return ret;
1729 }
1730
1731 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1732 {
1733     AVSubtitle subtitle;
1734     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1735                                           &subtitle, got_output, pkt);
1736     if (ret < 0 || !*got_output) {
1737         if (!pkt->size)
1738             sub2video_flush(ist);
1739         return ret;
1740     }
1741
1742     if (ist->fix_sub_duration) {
1743         if (ist->prev_sub.got_output) {
1744             int end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1745                                  1000, AV_TIME_BASE);
1746             if (end < ist->prev_sub.subtitle.end_display_time) {
1747                 av_log(ist->st->codec, AV_LOG_DEBUG,
1748                        "Subtitle duration reduced from %d to %d\n",
1749                        ist->prev_sub.subtitle.end_display_time, end);
1750                 ist->prev_sub.subtitle.end_display_time = end;
1751             }
1752         }
1753         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1754         FFSWAP(int,        ret,         ist->prev_sub.ret);
1755         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1756     }
1757
1758     sub2video_update(ist, &subtitle);
1759
1760     if (!*got_output || !subtitle.num_rects)
1761         return ret;
1762
1763     rate_emu_sleep(ist);
1764
1765     for (i = 0; i < nb_output_streams; i++) {
1766         OutputStream *ost = output_streams[i];
1767
1768         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1769             continue;
1770
1771         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
1772     }
1773
1774     avsubtitle_free(&subtitle);
1775     return ret;
1776 }
1777
1778 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1779 static int output_packet(InputStream *ist, const AVPacket *pkt)
1780 {
1781     int ret = 0, i;
1782     int got_output;
1783
1784     AVPacket avpkt;
1785     if (!ist->saw_first_ts) {
1786         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;
1787         ist->pts = 0;
1788         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1789             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1790             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1791         }
1792         ist->saw_first_ts = 1;
1793     }
1794
1795     if (ist->next_dts == AV_NOPTS_VALUE)
1796         ist->next_dts = ist->dts;
1797     if (ist->next_pts == AV_NOPTS_VALUE)
1798         ist->next_pts = ist->pts;
1799
1800     if (pkt == NULL) {
1801         /* EOF handling */
1802         av_init_packet(&avpkt);
1803         avpkt.data = NULL;
1804         avpkt.size = 0;
1805         goto handle_eof;
1806     } else {
1807         avpkt = *pkt;
1808     }
1809
1810     if (pkt->dts != AV_NOPTS_VALUE) {
1811         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1812         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1813             ist->next_pts = ist->pts = ist->dts;
1814     }
1815
1816     // while we have more to decode or while the decoder did output something on EOF
1817     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1818         int duration;
1819     handle_eof:
1820
1821         ist->pts = ist->next_pts;
1822         ist->dts = ist->next_dts;
1823
1824         if (avpkt.size && avpkt.size != pkt->size) {
1825             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1826                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1827             ist->showed_multi_packet_warning = 1;
1828         }
1829
1830         switch (ist->st->codec->codec_type) {
1831         case AVMEDIA_TYPE_AUDIO:
1832             ret = decode_audio    (ist, &avpkt, &got_output);
1833             break;
1834         case AVMEDIA_TYPE_VIDEO:
1835             ret = decode_video    (ist, &avpkt, &got_output);
1836             if (avpkt.duration) {
1837                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1838             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1839                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1840                 duration = ((int64_t)AV_TIME_BASE *
1841                                 ist->st->codec->time_base.num * ticks) /
1842                                 ist->st->codec->time_base.den;
1843             } else
1844                 duration = 0;
1845
1846             if(ist->dts != AV_NOPTS_VALUE && duration) {
1847                 ist->next_dts += duration;
1848             }else
1849                 ist->next_dts = AV_NOPTS_VALUE;
1850
1851             if (got_output)
1852                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1853             break;
1854         case AVMEDIA_TYPE_SUBTITLE:
1855             ret = transcode_subtitles(ist, &avpkt, &got_output);
1856             break;
1857         default:
1858             return -1;
1859         }
1860
1861         if (ret < 0)
1862             return ret;
1863
1864         avpkt.dts=
1865         avpkt.pts= AV_NOPTS_VALUE;
1866
1867         // touch data and size only if not EOF
1868         if (pkt) {
1869             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1870                 ret = avpkt.size;
1871             avpkt.data += ret;
1872             avpkt.size -= ret;
1873         }
1874         if (!got_output) {
1875             continue;
1876         }
1877     }
1878
1879     /* handle stream copy */
1880     if (!ist->decoding_needed) {
1881         rate_emu_sleep(ist);
1882         ist->dts = ist->next_dts;
1883         switch (ist->st->codec->codec_type) {
1884         case AVMEDIA_TYPE_AUDIO:
1885             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1886                              ist->st->codec->sample_rate;
1887             break;
1888         case AVMEDIA_TYPE_VIDEO:
1889             if (pkt->duration) {
1890                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1891             } else if(ist->st->codec->time_base.num != 0) {
1892                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1893                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1894                                   ist->st->codec->time_base.num * ticks) /
1895                                   ist->st->codec->time_base.den;
1896             }
1897             break;
1898         }
1899         ist->pts = ist->dts;
1900         ist->next_pts = ist->next_dts;
1901     }
1902     for (i = 0; pkt && i < nb_output_streams; i++) {
1903         OutputStream *ost = output_streams[i];
1904
1905         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1906             continue;
1907
1908         do_streamcopy(ist, ost, pkt);
1909     }
1910
1911     return 0;
1912 }
1913
1914 static void print_sdp(void)
1915 {
1916     char sdp[16384];
1917     int i;
1918     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1919
1920     if (!avc)
1921         exit(1);
1922     for (i = 0; i < nb_output_files; i++)
1923         avc[i] = output_files[i]->ctx;
1924
1925     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1926     printf("SDP:\n%s\n", sdp);
1927     fflush(stdout);
1928     av_freep(&avc);
1929 }
1930
1931 static int init_input_stream(int ist_index, char *error, int error_len)
1932 {
1933     int ret;
1934     InputStream *ist = input_streams[ist_index];
1935
1936     if (ist->decoding_needed) {
1937         AVCodec *codec = ist->dec;
1938         if (!codec) {
1939             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1940                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1941             return AVERROR(EINVAL);
1942         }
1943
1944         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
1945         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
1946             ist->st->codec->get_buffer     = codec_get_buffer;
1947             ist->st->codec->release_buffer = codec_release_buffer;
1948             ist->st->codec->opaque         = &ist->buffer_pool;
1949         }
1950
1951         if (!av_dict_get(ist->opts, "threads", NULL, 0))
1952             av_dict_set(&ist->opts, "threads", "auto", 0);
1953         if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
1954             if (ret == AVERROR_EXPERIMENTAL)
1955                 abort_codec_experimental(codec, 0);
1956             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1957                     ist->file_index, ist->st->index);
1958             return ret;
1959         }
1960         assert_avoptions(ist->opts);
1961     }
1962
1963     ist->next_pts = AV_NOPTS_VALUE;
1964     ist->next_dts = AV_NOPTS_VALUE;
1965     ist->is_start = 1;
1966
1967     return 0;
1968 }
1969
1970 static InputStream *get_input_stream(OutputStream *ost)
1971 {
1972     if (ost->source_index >= 0)
1973         return input_streams[ost->source_index];
1974     return NULL;
1975 }
1976
1977 static int compare_int64(const void *a, const void *b)
1978 {
1979     int64_t va = *(int64_t *)a, vb = *(int64_t *)b;
1980     return va < vb ? -1 : va > vb ? +1 : 0;
1981 }
1982
1983 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1984                                     AVCodecContext *avctx)
1985 {
1986     char *p;
1987     int n = 1, i, size, index = 0;
1988     int64_t t, *pts;
1989
1990     for (p = kf; *p; p++)
1991         if (*p == ',')
1992             n++;
1993     size = n;
1994     pts = av_malloc(sizeof(*pts) * size);
1995     if (!pts) {
1996         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1997         exit(1);
1998     }
1999
2000     p = kf;
2001     for (i = 0; i < n; i++) {
2002         char *next = strchr(p, ',');
2003
2004         if (next)
2005             *next++ = 0;
2006
2007         if (!memcmp(p, "chapters", 8)) {
2008
2009             AVFormatContext *avf = output_files[ost->file_index]->ctx;
2010             int j;
2011
2012             if (avf->nb_chapters > INT_MAX - size ||
2013                 !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
2014                                      sizeof(*pts)))) {
2015                 av_log(NULL, AV_LOG_FATAL,
2016                        "Could not allocate forced key frames array.\n");
2017                 exit(1);
2018             }
2019             t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
2020             t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2021
2022             for (j = 0; j < avf->nb_chapters; j++) {
2023                 AVChapter *c = avf->chapters[j];
2024                 av_assert1(index < size);
2025                 pts[index++] = av_rescale_q(c->start, c->time_base,
2026                                             avctx->time_base) + t;
2027             }
2028
2029         } else {
2030
2031             t = parse_time_or_die("force_key_frames", p, 1);
2032             av_assert1(index < size);
2033             pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2034
2035         }
2036
2037         p = next;
2038     }
2039
2040     av_assert0(index == size);
2041     qsort(pts, size, sizeof(*pts), compare_int64);
2042     ost->forced_kf_count = size;
2043     ost->forced_kf_pts   = pts;
2044 }
2045
2046 static void report_new_stream(int input_index, AVPacket *pkt)
2047 {
2048     InputFile *file = input_files[input_index];
2049     AVStream *st = file->ctx->streams[pkt->stream_index];
2050
2051     if (pkt->stream_index < file->nb_streams_warn)
2052         return;
2053     av_log(file->ctx, AV_LOG_WARNING,
2054            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
2055            av_get_media_type_string(st->codec->codec_type),
2056            input_index, pkt->stream_index,
2057            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
2058     file->nb_streams_warn = pkt->stream_index + 1;
2059 }
2060
2061 static int transcode_init(void)
2062 {
2063     int ret = 0, i, j, k;
2064     AVFormatContext *oc;
2065     AVCodecContext *codec;
2066     OutputStream *ost;
2067     InputStream *ist;
2068     char error[1024];
2069     int want_sdp = 1;
2070
2071     /* init framerate emulation */
2072     for (i = 0; i < nb_input_files; i++) {
2073         InputFile *ifile = input_files[i];
2074         if (ifile->rate_emu)
2075             for (j = 0; j < ifile->nb_streams; j++)
2076                 input_streams[j + ifile->ist_index]->start = av_gettime();
2077     }
2078
2079     /* output stream init */
2080     for (i = 0; i < nb_output_files; i++) {
2081         oc = output_files[i]->ctx;
2082         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2083             av_dump_format(oc, i, oc->filename, 1);
2084             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2085             return AVERROR(EINVAL);
2086         }
2087     }
2088
2089     /* init complex filtergraphs */
2090     for (i = 0; i < nb_filtergraphs; i++)
2091         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2092             return ret;
2093
2094     /* for each output stream, we compute the right encoding parameters */
2095     for (i = 0; i < nb_output_streams; i++) {
2096         AVCodecContext *icodec = NULL;
2097         ost = output_streams[i];
2098         oc  = output_files[ost->file_index]->ctx;
2099         ist = get_input_stream(ost);
2100
2101         if (ost->attachment_filename)
2102             continue;
2103
2104         codec  = ost->st->codec;
2105
2106         if (ist) {
2107             icodec = ist->st->codec;
2108
2109             ost->st->disposition          = ist->st->disposition;
2110             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2111             codec->chroma_sample_location = icodec->chroma_sample_location;
2112         }
2113
2114         if (ost->stream_copy) {
2115             uint64_t extra_size;
2116
2117             av_assert0(ist && !ost->filter);
2118
2119             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2120
2121             if (extra_size > INT_MAX) {
2122                 return AVERROR(EINVAL);
2123             }
2124
2125             /* if stream_copy is selected, no need to decode or encode */
2126             codec->codec_id   = icodec->codec_id;
2127             codec->codec_type = icodec->codec_type;
2128
2129             if (!codec->codec_tag) {
2130                 unsigned int codec_tag;
2131                 if (!oc->oformat->codec_tag ||
2132                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2133                      !av_codec_get_tag2(oc->oformat->codec_tag, icodec->codec_id, &codec_tag))
2134                     codec->codec_tag = icodec->codec_tag;
2135             }
2136
2137             codec->bit_rate       = icodec->bit_rate;
2138             codec->rc_max_rate    = icodec->rc_max_rate;
2139             codec->rc_buffer_size = icodec->rc_buffer_size;
2140             codec->field_order    = icodec->field_order;
2141             codec->extradata      = av_mallocz(extra_size);
2142             if (!codec->extradata) {
2143                 return AVERROR(ENOMEM);
2144             }
2145             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2146             codec->extradata_size= icodec->extradata_size;
2147             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2148
2149             codec->time_base = ist->st->time_base;
2150             /*
2151              * Avi is a special case here because it supports variable fps but
2152              * having the fps and timebase differe significantly adds quite some
2153              * overhead
2154              */
2155             if(!strcmp(oc->oformat->name, "avi")) {
2156                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2157                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2158                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2159                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2160                      || copy_tb==2){
2161                     codec->time_base.num = ist->st->r_frame_rate.den;
2162                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2163                     codec->ticks_per_frame = 2;
2164                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2165                                  && av_q2d(ist->st->time_base) < 1.0/500
2166                     || copy_tb==0){
2167                     codec->time_base = icodec->time_base;
2168                     codec->time_base.num *= icodec->ticks_per_frame;
2169                     codec->time_base.den *= 2;
2170                     codec->ticks_per_frame = 2;
2171                 }
2172             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2173                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2174                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2175                       && strcmp(oc->oformat->name, "f4v")
2176             ) {
2177                 if(   copy_tb<0 && icodec->time_base.den
2178                                 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2179                                 && av_q2d(ist->st->time_base) < 1.0/500
2180                    || copy_tb==0){
2181                     codec->time_base = icodec->time_base;
2182                     codec->time_base.num *= icodec->ticks_per_frame;
2183                 }
2184             }
2185             if (   codec->codec_tag == AV_RL32("tmcd")
2186                 && icodec->time_base.num < icodec->time_base.den
2187                 && icodec->time_base.num > 0
2188                 && 121LL*icodec->time_base.num > icodec->time_base.den) {
2189                 codec->time_base = icodec->time_base;
2190             }
2191
2192             if(ost->frame_rate.num)
2193                 codec->time_base = av_inv_q(ost->frame_rate);
2194
2195             av_reduce(&codec->time_base.num, &codec->time_base.den,
2196                         codec->time_base.num, codec->time_base.den, INT_MAX);
2197
2198             switch (codec->codec_type) {
2199             case AVMEDIA_TYPE_AUDIO:
2200                 if (audio_volume != 256) {
2201                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2202                     exit(1);
2203                 }
2204                 codec->channel_layout     = icodec->channel_layout;
2205                 codec->sample_rate        = icodec->sample_rate;
2206                 codec->channels           = icodec->channels;
2207                 codec->frame_size         = icodec->frame_size;
2208                 codec->audio_service_type = icodec->audio_service_type;
2209                 codec->block_align        = icodec->block_align;
2210                 if((codec->block_align == 1 || codec->block_align == 1152) && codec->codec_id == AV_CODEC_ID_MP3)
2211                     codec->block_align= 0;
2212                 if(codec->codec_id == AV_CODEC_ID_AC3)
2213                     codec->block_align= 0;
2214                 break;
2215             case AVMEDIA_TYPE_VIDEO:
2216                 codec->pix_fmt            = icodec->pix_fmt;
2217                 codec->width              = icodec->width;
2218                 codec->height             = icodec->height;
2219                 codec->has_b_frames       = icodec->has_b_frames;
2220                 if (!codec->sample_aspect_ratio.num) {
2221                     codec->sample_aspect_ratio   =
2222                     ost->st->sample_aspect_ratio =
2223                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2224                         ist->st->codec->sample_aspect_ratio.num ?
2225                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2226                 }
2227                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2228                 break;
2229             case AVMEDIA_TYPE_SUBTITLE:
2230                 codec->width  = icodec->width;
2231                 codec->height = icodec->height;
2232                 break;
2233             case AVMEDIA_TYPE_DATA:
2234             case AVMEDIA_TYPE_ATTACHMENT:
2235                 break;
2236             default:
2237                 abort();
2238             }
2239         } else {
2240             if (!ost->enc)
2241                 ost->enc = avcodec_find_encoder(codec->codec_id);
2242             if (!ost->enc) {
2243                 /* should only happen when a default codec is not present. */
2244                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2245                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2246                 ret = AVERROR(EINVAL);
2247                 goto dump_format;
2248             }
2249
2250             if (ist)
2251                 ist->decoding_needed++;
2252             ost->encoding_needed = 1;
2253
2254             if (!ost->filter &&
2255                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2256                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2257                     FilterGraph *fg;
2258                     fg = init_simple_filtergraph(ist, ost);
2259                     if (configure_filtergraph(fg)) {
2260                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2261                         exit(1);
2262                     }
2263             }
2264
2265             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2266                 if (ost->filter && !ost->frame_rate.num)
2267                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2268                 if (ist && !ost->frame_rate.num)
2269                     ost->frame_rate = ist->framerate;
2270                 if (ist && !ost->frame_rate.num)
2271                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2272 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2273                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2274                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2275                     ost->frame_rate = ost->enc->supported_framerates[idx];
2276                 }
2277             }
2278
2279             switch (codec->codec_type) {
2280             case AVMEDIA_TYPE_AUDIO:
2281                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2282                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2283                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2284                 codec->channels       = avfilter_link_get_channels(ost->filter->filter->inputs[0]);
2285                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2286                 break;
2287             case AVMEDIA_TYPE_VIDEO:
2288                 codec->time_base = av_inv_q(ost->frame_rate);
2289                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2290                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2291                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2292                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2293                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2294                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2295                 }
2296                 for (j = 0; j < ost->forced_kf_count; j++)
2297                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2298                                                          AV_TIME_BASE_Q,
2299                                                          codec->time_base);
2300
2301                 codec->width  = ost->filter->filter->inputs[0]->w;
2302                 codec->height = ost->filter->filter->inputs[0]->h;
2303                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2304                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
2305                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
2306                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2307                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2308
2309                 if (!icodec ||
2310                     codec->width   != icodec->width  ||
2311                     codec->height  != icodec->height ||
2312                     codec->pix_fmt != icodec->pix_fmt) {
2313                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2314                 }
2315
2316                 if (ost->forced_keyframes) {
2317                     if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
2318                         ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
2319                                             forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
2320                         if (ret < 0) {
2321                             av_log(NULL, AV_LOG_ERROR,
2322                                    "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
2323                             return ret;
2324                         }
2325                         ost->forced_keyframes_expr_const_values[FKF_N] = 0;
2326                         ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
2327                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
2328                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;
2329                     } else {
2330                         parse_forced_key_frames(ost->forced_keyframes, ost, ost->st->codec);
2331                     }
2332                 }
2333                 break;
2334             case AVMEDIA_TYPE_SUBTITLE:
2335                 codec->time_base = (AVRational){1, 1000};
2336                 if (!codec->width) {
2337                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2338                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2339                 }
2340                 break;
2341             default:
2342                 abort();
2343                 break;
2344             }
2345             /* two pass mode */
2346             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2347                 char logfilename[1024];
2348                 FILE *f;
2349
2350                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2351                          ost->logfile_prefix ? ost->logfile_prefix :
2352                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2353                          i);
2354                 if (!strcmp(ost->enc->name, "libx264")) {
2355                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2356                 } else {
2357                     if (codec->flags & CODEC_FLAG_PASS2) {
2358                         char  *logbuffer;
2359                         size_t logbuffer_size;
2360                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2361                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2362                                    logfilename);
2363                             exit(1);
2364                         }
2365                         codec->stats_in = logbuffer;
2366                     }
2367                     if (codec->flags & CODEC_FLAG_PASS1) {
2368                         f = fopen(logfilename, "wb");
2369                         if (!f) {
2370                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2371                                 logfilename, strerror(errno));
2372                             exit(1);
2373                         }
2374                         ost->logfile = f;
2375                     }
2376                 }
2377             }
2378         }
2379     }
2380
2381     /* open each encoder */
2382     for (i = 0; i < nb_output_streams; i++) {
2383         ost = output_streams[i];
2384         if (ost->encoding_needed) {
2385             AVCodec      *codec = ost->enc;
2386             AVCodecContext *dec = NULL;
2387
2388             if ((ist = get_input_stream(ost)))
2389                 dec = ist->st->codec;
2390             if (dec && dec->subtitle_header) {
2391                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2392                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2393                 if (!ost->st->codec->subtitle_header) {
2394                     ret = AVERROR(ENOMEM);
2395                     goto dump_format;
2396                 }
2397                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2398                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2399             }
2400             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2401                 av_dict_set(&ost->opts, "threads", "auto", 0);
2402             if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
2403                 if (ret == AVERROR_EXPERIMENTAL)
2404                     abort_codec_experimental(codec, 1);
2405                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2406                         ost->file_index, ost->index);
2407                 goto dump_format;
2408             }
2409             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2410                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2411                 av_buffersink_set_frame_size(ost->filter->filter,
2412                                              ost->st->codec->frame_size);
2413             assert_avoptions(ost->opts);
2414             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2415                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2416                                              " It takes bits/s as argument, not kbits/s\n");
2417             extra_size += ost->st->codec->extradata_size;
2418
2419             if (ost->st->codec->me_threshold)
2420                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
2421         }
2422     }
2423
2424     /* init input streams */
2425     for (i = 0; i < nb_input_streams; i++)
2426         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
2427             goto dump_format;
2428
2429     /* discard unused programs */
2430     for (i = 0; i < nb_input_files; i++) {
2431         InputFile *ifile = input_files[i];
2432         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2433             AVProgram *p = ifile->ctx->programs[j];
2434             int discard  = AVDISCARD_ALL;
2435
2436             for (k = 0; k < p->nb_stream_indexes; k++)
2437                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2438                     discard = AVDISCARD_DEFAULT;
2439                     break;
2440                 }
2441             p->discard = discard;
2442         }
2443     }
2444
2445     /* open files and write file headers */
2446     for (i = 0; i < nb_output_files; i++) {
2447         oc = output_files[i]->ctx;
2448         oc->interrupt_callback = int_cb;
2449         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2450             char errbuf[128];
2451             const char *errbuf_ptr = errbuf;
2452             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
2453                 errbuf_ptr = strerror(AVUNERROR(ret));
2454             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
2455             ret = AVERROR(EINVAL);
2456             goto dump_format;
2457         }
2458 //         assert_avoptions(output_files[i]->opts);
2459         if (strcmp(oc->oformat->name, "rtp")) {
2460             want_sdp = 0;
2461         }
2462     }
2463
2464  dump_format:
2465     /* dump the file output parameters - cannot be done before in case
2466        of stream copy */
2467     for (i = 0; i < nb_output_files; i++) {
2468         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2469     }
2470
2471     /* dump the stream mapping */
2472     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2473     for (i = 0; i < nb_input_streams; i++) {
2474         ist = input_streams[i];
2475
2476         for (j = 0; j < ist->nb_filters; j++) {
2477             if (ist->filters[j]->graph->graph_desc) {
2478                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2479                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2480                        ist->filters[j]->name);
2481                 if (nb_filtergraphs > 1)
2482                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2483                 av_log(NULL, AV_LOG_INFO, "\n");
2484             }
2485         }
2486     }
2487
2488     for (i = 0; i < nb_output_streams; i++) {
2489         ost = output_streams[i];
2490
2491         if (ost->attachment_filename) {
2492             /* an attached file */
2493             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2494                    ost->attachment_filename, ost->file_index, ost->index);
2495             continue;
2496         }
2497
2498         if (ost->filter && ost->filter->graph->graph_desc) {
2499             /* output from a complex graph */
2500             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2501             if (nb_filtergraphs > 1)
2502                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2503
2504             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2505                    ost->index, ost->enc ? ost->enc->name : "?");
2506             continue;
2507         }
2508
2509         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2510                input_streams[ost->source_index]->file_index,
2511                input_streams[ost->source_index]->st->index,
2512                ost->file_index,
2513                ost->index);
2514         if (ost->sync_ist != input_streams[ost->source_index])
2515             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2516                    ost->sync_ist->file_index,
2517                    ost->sync_ist->st->index);
2518         if (ost->stream_copy)
2519             av_log(NULL, AV_LOG_INFO, " (copy)");
2520         else
2521             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2522                    input_streams[ost->source_index]->dec->name : "?",
2523                    ost->enc ? ost->enc->name : "?");
2524         av_log(NULL, AV_LOG_INFO, "\n");
2525     }
2526
2527     if (ret) {
2528         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2529         return ret;
2530     }
2531
2532     if (want_sdp) {
2533         print_sdp();
2534     }
2535
2536     return 0;
2537 }
2538
2539 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2540 static int need_output(void)
2541 {
2542     int i;
2543
2544     for (i = 0; i < nb_output_streams; i++) {
2545         OutputStream *ost    = output_streams[i];
2546         OutputFile *of       = output_files[ost->file_index];
2547         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2548
2549         if (ost->finished ||
2550             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2551             continue;
2552         if (ost->frame_number >= ost->max_frames) {
2553             int j;
2554             for (j = 0; j < of->ctx->nb_streams; j++)
2555                 close_output_stream(output_streams[of->ost_index + j]);
2556             continue;
2557         }
2558
2559         return 1;
2560     }
2561
2562     return 0;
2563 }
2564
2565 /**
2566  * Select the output stream to process.
2567  *
2568  * @return  selected output stream, or NULL if none available
2569  */
2570 static OutputStream *choose_output(void)
2571 {
2572     int i;
2573     int64_t opts_min = INT64_MAX;
2574     OutputStream *ost_min = NULL;
2575
2576     for (i = 0; i < nb_output_streams; i++) {
2577         OutputStream *ost = output_streams[i];
2578         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2579                                     AV_TIME_BASE_Q);
2580         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2581             opts_min = opts;
2582             ost_min  = ost;
2583         }
2584     }
2585     return ost_min;
2586 }
2587
2588 static int check_keyboard_interaction(int64_t cur_time)
2589 {
2590     int i, ret, key;
2591     static int64_t last_time;
2592     if (received_nb_signals)
2593         return AVERROR_EXIT;
2594     /* read_key() returns 0 on EOF */
2595     if(cur_time - last_time >= 100000 && !run_as_daemon){
2596         key =  read_key();
2597         last_time = cur_time;
2598     }else
2599         key = -1;
2600     if (key == 'q')
2601         return AVERROR_EXIT;
2602     if (key == '+') av_log_set_level(av_log_get_level()+10);
2603     if (key == '-') av_log_set_level(av_log_get_level()-10);
2604     if (key == 's') qp_hist     ^= 1;
2605     if (key == 'h'){
2606         if (do_hex_dump){
2607             do_hex_dump = do_pkt_dump = 0;
2608         } else if(do_pkt_dump){
2609             do_hex_dump = 1;
2610         } else
2611             do_pkt_dump = 1;
2612         av_log_set_level(AV_LOG_DEBUG);
2613     }
2614     if (key == 'c' || key == 'C'){
2615         char buf[4096], target[64], command[256], arg[256] = {0};
2616         double time;
2617         int k, n = 0;
2618         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2619         i = 0;
2620         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2621             if (k > 0)
2622                 buf[i++] = k;
2623         buf[i] = 0;
2624         if (k > 0 &&
2625             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2626             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2627                    target, time, command, arg);
2628             for (i = 0; i < nb_filtergraphs; i++) {
2629                 FilterGraph *fg = filtergraphs[i];
2630                 if (fg->graph) {
2631                     if (time < 0) {
2632                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2633                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2634                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2635                     } else {
2636                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2637                     }
2638                 }
2639             }
2640         } else {
2641             av_log(NULL, AV_LOG_ERROR,
2642                    "Parse error, at least 3 arguments were expected, "
2643                    "only %d given in string '%s'\n", n, buf);
2644         }
2645     }
2646     if (key == 'd' || key == 'D'){
2647         int debug=0;
2648         if(key == 'D') {
2649             debug = input_streams[0]->st->codec->debug<<1;
2650             if(!debug) debug = 1;
2651             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2652                 debug += debug;
2653         }else
2654             if(scanf("%d", &debug)!=1)
2655                 fprintf(stderr,"error parsing debug value\n");
2656         for(i=0;i<nb_input_streams;i++) {
2657             input_streams[i]->st->codec->debug = debug;
2658         }
2659         for(i=0;i<nb_output_streams;i++) {
2660             OutputStream *ost = output_streams[i];
2661             ost->st->codec->debug = debug;
2662         }
2663         if(debug) av_log_set_level(AV_LOG_DEBUG);
2664         fprintf(stderr,"debug=%d\n", debug);
2665     }
2666     if (key == '?'){
2667         fprintf(stderr, "key    function\n"
2668                         "?      show this help\n"
2669                         "+      increase verbosity\n"
2670                         "-      decrease verbosity\n"
2671                         "c      Send command to filtergraph\n"
2672                         "D      cycle through available debug modes\n"
2673                         "h      dump packets/hex press to cycle through the 3 states\n"
2674                         "q      quit\n"
2675                         "s      Show QP histogram\n"
2676         );
2677     }
2678     return 0;
2679 }
2680
2681 #if HAVE_PTHREADS
2682 static void *input_thread(void *arg)
2683 {
2684     InputFile *f = arg;
2685     int ret = 0;
2686
2687     while (!transcoding_finished && ret >= 0) {
2688         AVPacket pkt;
2689         ret = av_read_frame(f->ctx, &pkt);
2690
2691         if (ret == AVERROR(EAGAIN)) {
2692             av_usleep(10000);
2693             ret = 0;
2694             continue;
2695         } else if (ret < 0)
2696             break;
2697
2698         pthread_mutex_lock(&f->fifo_lock);
2699         while (!av_fifo_space(f->fifo))
2700             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2701
2702         av_dup_packet(&pkt);
2703         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2704
2705         pthread_mutex_unlock(&f->fifo_lock);
2706     }
2707
2708     f->finished = 1;
2709     return NULL;
2710 }
2711
2712 static void free_input_threads(void)
2713 {
2714     int i;
2715
2716     if (nb_input_files == 1)
2717         return;
2718
2719     transcoding_finished = 1;
2720
2721     for (i = 0; i < nb_input_files; i++) {
2722         InputFile *f = input_files[i];
2723         AVPacket pkt;
2724
2725         if (!f->fifo || f->joined)
2726             continue;
2727
2728         pthread_mutex_lock(&f->fifo_lock);
2729         while (av_fifo_size(f->fifo)) {
2730             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2731             av_free_packet(&pkt);
2732         }
2733         pthread_cond_signal(&f->fifo_cond);
2734         pthread_mutex_unlock(&f->fifo_lock);
2735
2736         pthread_join(f->thread, NULL);
2737         f->joined = 1;
2738
2739         while (av_fifo_size(f->fifo)) {
2740             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2741             av_free_packet(&pkt);
2742         }
2743         av_fifo_free(f->fifo);
2744     }
2745 }
2746
2747 static int init_input_threads(void)
2748 {
2749     int i, ret;
2750
2751     if (nb_input_files == 1)
2752         return 0;
2753
2754     for (i = 0; i < nb_input_files; i++) {
2755         InputFile *f = input_files[i];
2756
2757         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2758             return AVERROR(ENOMEM);
2759
2760         pthread_mutex_init(&f->fifo_lock, NULL);
2761         pthread_cond_init (&f->fifo_cond, NULL);
2762
2763         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2764             return AVERROR(ret);
2765     }
2766     return 0;
2767 }
2768
2769 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2770 {
2771     int ret = 0;
2772
2773     pthread_mutex_lock(&f->fifo_lock);
2774
2775     if (av_fifo_size(f->fifo)) {
2776         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2777         pthread_cond_signal(&f->fifo_cond);
2778     } else {
2779         if (f->finished)
2780             ret = AVERROR_EOF;
2781         else
2782             ret = AVERROR(EAGAIN);
2783     }
2784
2785     pthread_mutex_unlock(&f->fifo_lock);
2786
2787     return ret;
2788 }
2789 #endif
2790
2791 static int get_input_packet(InputFile *f, AVPacket *pkt)
2792 {
2793 #if HAVE_PTHREADS
2794     if (nb_input_files > 1)
2795         return get_input_packet_mt(f, pkt);
2796 #endif
2797     return av_read_frame(f->ctx, pkt);
2798 }
2799
2800 static int got_eagain(void)
2801 {
2802     int i;
2803     for (i = 0; i < nb_output_streams; i++)
2804         if (output_streams[i]->unavailable)
2805             return 1;
2806     return 0;
2807 }
2808
2809 static void reset_eagain(void)
2810 {
2811     int i;
2812     for (i = 0; i < nb_input_files; i++)
2813         input_files[i]->eagain = 0;
2814     for (i = 0; i < nb_output_streams; i++)
2815         output_streams[i]->unavailable = 0;
2816 }
2817
2818 /*
2819  * Return
2820  * - 0 -- one packet was read and processed
2821  * - AVERROR(EAGAIN) -- no packets were available for selected file,
2822  *   this function should be called again
2823  * - AVERROR_EOF -- this function should not be called again
2824  */
2825 static int process_input(int file_index)
2826 {
2827     InputFile *ifile = input_files[file_index];
2828     AVFormatContext *is;
2829     InputStream *ist;
2830     AVPacket pkt;
2831     int ret, i, j;
2832
2833     is  = ifile->ctx;
2834     ret = get_input_packet(ifile, &pkt);
2835
2836     if (ret == AVERROR(EAGAIN)) {
2837         ifile->eagain = 1;
2838         return ret;
2839     }
2840     if (ret < 0) {
2841         if (ret != AVERROR_EOF) {
2842             print_error(is->filename, ret);
2843             if (exit_on_error)
2844                 exit(1);
2845         }
2846         ifile->eof_reached = 1;
2847
2848         for (i = 0; i < ifile->nb_streams; i++) {
2849             ist = input_streams[ifile->ist_index + i];
2850             if (ist->decoding_needed)
2851                 output_packet(ist, NULL);
2852
2853             /* mark all outputs that don't go through lavfi as finished */
2854             for (j = 0; j < nb_output_streams; j++) {
2855                 OutputStream *ost = output_streams[j];
2856
2857                 if (ost->source_index == ifile->ist_index + i &&
2858                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2859                     close_output_stream(ost);
2860             }
2861         }
2862
2863         return AVERROR(EAGAIN);
2864     }
2865
2866     reset_eagain();
2867
2868     if (do_pkt_dump) {
2869         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2870                          is->streams[pkt.stream_index]);
2871     }
2872     /* the following test is needed in case new streams appear
2873        dynamically in stream : we ignore them */
2874     if (pkt.stream_index >= ifile->nb_streams) {
2875         report_new_stream(file_index, &pkt);
2876         goto discard_packet;
2877     }
2878
2879     ist = input_streams[ifile->ist_index + pkt.stream_index];
2880     if (ist->discard)
2881         goto discard_packet;
2882
2883     if (debug_ts) {
2884         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
2885                "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:%s off_time:%s\n",
2886                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2887                av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
2888                av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
2889                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2890                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2891                av_ts2str(input_files[ist->file_index]->ts_offset),
2892                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
2893     }
2894
2895     if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
2896         int64_t stime, stime2;
2897         // Correcting starttime based on the enabled streams
2898         // FIXME this ideally should be done before the first use of starttime but we do not know which are the enabled streams at that point.
2899         //       so we instead do it here as part of discontinuity handling
2900         if (   ist->next_dts == AV_NOPTS_VALUE
2901             && ifile->ts_offset == -is->start_time
2902             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2903             int64_t new_start_time = INT64_MAX;
2904             for (i=0; i<is->nb_streams; i++) {
2905                 AVStream *st = is->streams[i];
2906                 if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
2907                     continue;
2908                 new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
2909             }
2910             if (new_start_time > is->start_time) {
2911                 av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
2912                 ifile->ts_offset = -new_start_time;
2913             }
2914         }
2915
2916         stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
2917         stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
2918         ist->wrap_correction_done = 1;
2919
2920         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2921             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
2922             ist->wrap_correction_done = 0;
2923         }
2924         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2925             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
2926             ist->wrap_correction_done = 0;
2927         }
2928     }
2929
2930     if (pkt.dts != AV_NOPTS_VALUE)
2931         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2932     if (pkt.pts != AV_NOPTS_VALUE)
2933         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2934
2935     if (pkt.pts != AV_NOPTS_VALUE)
2936         pkt.pts *= ist->ts_scale;
2937     if (pkt.dts != AV_NOPTS_VALUE)
2938         pkt.dts *= ist->ts_scale;
2939
2940     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2941         !copy_ts) {
2942         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2943         int64_t delta   = pkt_dts - ist->next_dts;
2944         if (is->iformat->flags & AVFMT_TS_DISCONT) {
2945         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2946             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2947                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2948             pkt_dts+1<ist->pts){
2949             ifile->ts_offset -= delta;
2950             av_log(NULL, AV_LOG_DEBUG,
2951                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2952                    delta, ifile->ts_offset);
2953             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2954             if (pkt.pts != AV_NOPTS_VALUE)
2955                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2956         }
2957         } else {
2958             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2959                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2960                ) {
2961                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
2962                 pkt.dts = AV_NOPTS_VALUE;
2963             }
2964             if (pkt.pts != AV_NOPTS_VALUE){
2965                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
2966                 delta   = pkt_pts - ist->next_dts;
2967                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2968                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2969                    ) {
2970                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
2971                     pkt.pts = AV_NOPTS_VALUE;
2972                 }
2973             }
2974         }
2975     }
2976
2977     if (debug_ts) {
2978         av_log(NULL, AV_LOG_INFO, "demuxer+ffmpeg -> ist_index:%d type:%s pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%s off_time:%s\n",
2979                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2980                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2981                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2982                av_ts2str(input_files[ist->file_index]->ts_offset),
2983                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
2984     }
2985
2986     sub2video_heartbeat(ist, pkt.pts);
2987
2988     ret = output_packet(ist, &pkt);
2989     if (ret < 0) {
2990         char buf[128];
2991         av_strerror(ret, buf, sizeof(buf));
2992         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
2993                 ist->file_index, ist->st->index, buf);
2994         if (exit_on_error)
2995             exit(1);
2996     }
2997
2998 discard_packet:
2999     av_free_packet(&pkt);
3000
3001     return 0;
3002 }
3003
3004 /**
3005  * Perform a step of transcoding for the specified filter graph.
3006  *
3007  * @param[in]  graph     filter graph to consider
3008  * @param[out] best_ist  input stream where a frame would allow to continue
3009  * @return  0 for success, <0 for error
3010  */
3011 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
3012 {
3013     int i, ret;
3014     int nb_requests, nb_requests_max = 0;
3015     InputFilter *ifilter;
3016     InputStream *ist;
3017
3018     *best_ist = NULL;
3019     ret = avfilter_graph_request_oldest(graph->graph);
3020     if (ret >= 0)
3021         return reap_filters();
3022
3023     if (ret == AVERROR_EOF) {
3024         ret = reap_filters();
3025         for (i = 0; i < graph->nb_outputs; i++)
3026             close_output_stream(graph->outputs[i]->ost);
3027         return ret;
3028     }
3029     if (ret != AVERROR(EAGAIN))
3030         return ret;
3031
3032     for (i = 0; i < graph->nb_inputs; i++) {
3033         ifilter = graph->inputs[i];
3034         ist = ifilter->ist;
3035         if (input_files[ist->file_index]->eagain ||
3036             input_files[ist->file_index]->eof_reached)
3037             continue;
3038         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
3039         if (nb_requests > nb_requests_max) {
3040             nb_requests_max = nb_requests;
3041             *best_ist = ist;
3042         }
3043     }
3044
3045     if (!*best_ist)
3046         for (i = 0; i < graph->nb_outputs; i++)
3047             graph->outputs[i]->ost->unavailable = 1;
3048
3049     return 0;
3050 }
3051
3052 /**
3053  * Run a single step of transcoding.
3054  *
3055  * @return  0 for success, <0 for error
3056  */
3057 static int transcode_step(void)
3058 {
3059     OutputStream *ost;
3060     InputStream  *ist;
3061     int ret;
3062
3063     ost = choose_output();
3064     if (!ost) {
3065         if (got_eagain()) {
3066             reset_eagain();
3067             av_usleep(10000);
3068             return 0;
3069         }
3070         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
3071         return AVERROR_EOF;
3072     }
3073
3074     if (ost->filter) {
3075         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
3076             return ret;
3077         if (!ist)
3078             return 0;
3079     } else {
3080         av_assert0(ost->source_index >= 0);
3081         ist = input_streams[ost->source_index];
3082     }
3083
3084     ret = process_input(ist->file_index);
3085     if (ret == AVERROR(EAGAIN)) {
3086         if (input_files[ist->file_index]->eagain)
3087             ost->unavailable = 1;
3088         return 0;
3089     }
3090     if (ret < 0)
3091         return ret == AVERROR_EOF ? 0 : ret;
3092
3093     return reap_filters();
3094 }
3095
3096 /*
3097  * The following code is the main loop of the file converter
3098  */
3099 static int transcode(void)
3100 {
3101     int ret, i;
3102     AVFormatContext *os;
3103     OutputStream *ost;
3104     InputStream *ist;
3105     int64_t timer_start;
3106
3107     ret = transcode_init();
3108     if (ret < 0)
3109         goto fail;
3110
3111     if (stdin_interaction) {
3112         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3113     }
3114
3115     timer_start = av_gettime();
3116
3117 #if HAVE_PTHREADS
3118     if ((ret = init_input_threads()) < 0)
3119         goto fail;
3120 #endif
3121
3122     while (!received_sigterm) {
3123         int64_t cur_time= av_gettime();
3124
3125         /* if 'q' pressed, exits */
3126         if (stdin_interaction)
3127             if (check_keyboard_interaction(cur_time) < 0)
3128                 break;
3129
3130         /* check if there's any stream where output is still needed */
3131         if (!need_output()) {
3132             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3133             break;
3134         }
3135
3136         ret = transcode_step();
3137         if (ret < 0) {
3138             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
3139                 continue;
3140
3141             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
3142             break;
3143         }
3144
3145         /* dump report by using the output first video and audio streams */
3146         print_report(0, timer_start, cur_time);
3147     }
3148 #if HAVE_PTHREADS
3149     free_input_threads();
3150 #endif
3151
3152     /* at the end of stream, we must flush the decoder buffers */
3153     for (i = 0; i < nb_input_streams; i++) {
3154         ist = input_streams[i];
3155         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3156             output_packet(ist, NULL);
3157         }
3158     }
3159     flush_encoders();
3160
3161     term_exit();
3162
3163     /* write the trailer if needed and close file */
3164     for (i = 0; i < nb_output_files; i++) {
3165         os = output_files[i]->ctx;
3166         av_write_trailer(os);
3167     }
3168
3169     /* dump report by using the first video and audio streams */
3170     print_report(1, timer_start, av_gettime());
3171
3172     /* close each encoder */
3173     for (i = 0; i < nb_output_streams; i++) {
3174         ost = output_streams[i];
3175         if (ost->encoding_needed) {
3176             av_freep(&ost->st->codec->stats_in);
3177             avcodec_close(ost->st->codec);
3178         }
3179     }
3180
3181     /* close each decoder */
3182     for (i = 0; i < nb_input_streams; i++) {
3183         ist = input_streams[i];
3184         if (ist->decoding_needed) {
3185             avcodec_close(ist->st->codec);
3186         }
3187     }
3188
3189     /* finished ! */
3190     ret = 0;
3191
3192  fail:
3193 #if HAVE_PTHREADS
3194     free_input_threads();
3195 #endif
3196
3197     if (output_streams) {
3198         for (i = 0; i < nb_output_streams; i++) {
3199             ost = output_streams[i];
3200             if (ost) {
3201                 if (ost->stream_copy)
3202                     av_freep(&ost->st->codec->extradata);
3203                 if (ost->logfile) {
3204                     fclose(ost->logfile);
3205                     ost->logfile = NULL;
3206                 }
3207                 av_freep(&ost->st->codec->subtitle_header);
3208                 av_free(ost->forced_kf_pts);
3209                 av_dict_free(&ost->opts);
3210             }
3211         }
3212     }
3213     return ret;
3214 }
3215
3216
3217 static int64_t getutime(void)
3218 {
3219 #if HAVE_GETRUSAGE
3220     struct rusage rusage;
3221
3222     getrusage(RUSAGE_SELF, &rusage);
3223     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3224 #elif HAVE_GETPROCESSTIMES
3225     HANDLE proc;
3226     FILETIME c, e, k, u;
3227     proc = GetCurrentProcess();
3228     GetProcessTimes(proc, &c, &e, &k, &u);
3229     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3230 #else
3231     return av_gettime();
3232 #endif
3233 }
3234
3235 static int64_t getmaxrss(void)
3236 {
3237 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3238     struct rusage rusage;
3239     getrusage(RUSAGE_SELF, &rusage);
3240     return (int64_t)rusage.ru_maxrss * 1024;
3241 #elif HAVE_GETPROCESSMEMORYINFO
3242     HANDLE proc;
3243     PROCESS_MEMORY_COUNTERS memcounters;
3244     proc = GetCurrentProcess();
3245     memcounters.cb = sizeof(memcounters);
3246     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3247     return memcounters.PeakPagefileUsage;
3248 #else
3249     return 0;
3250 #endif
3251 }
3252
3253 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3254 {
3255 }
3256
3257 int main(int argc, char **argv)
3258 {
3259     int ret;
3260     int64_t ti;
3261
3262     atexit(exit_program);
3263
3264     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3265
3266     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3267     parse_loglevel(argc, argv, options);
3268
3269     if(argc>1 && !strcmp(argv[1], "-d")){
3270         run_as_daemon=1;
3271         av_log_set_callback(log_callback_null);
3272         argc--;
3273         argv++;
3274     }
3275
3276     avcodec_register_all();
3277 #if CONFIG_AVDEVICE
3278     avdevice_register_all();
3279 #endif
3280     avfilter_register_all();
3281     av_register_all();
3282     avformat_network_init();
3283
3284     show_banner(argc, argv, options);
3285
3286     term_init();
3287
3288     /* parse options and open all input/output files */
3289     ret = ffmpeg_parse_options(argc, argv);
3290     if (ret < 0)
3291         exit(1);
3292
3293     if (nb_output_files <= 0 && nb_input_files == 0) {
3294         show_usage();
3295         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3296         exit(1);
3297     }
3298
3299     /* file converter / grab */
3300     if (nb_output_files <= 0) {
3301         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3302         exit(1);
3303     }
3304
3305 //     if (nb_input_files == 0) {
3306 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3307 //         exit(1);
3308 //     }
3309
3310     current_time = ti = getutime();
3311     if (transcode() < 0)
3312         exit(1);
3313     ti = getutime() - ti;
3314     if (do_benchmark) {
3315         int maxrss = getmaxrss() / 1024;
3316         printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss);
3317     }
3318
3319     exit(0);
3320     return 0;
3321 }