15c2a293716a1d06253b0dd7ec2946849120a484
[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/buffersrc.h"
68 # include "libavfilter/buffersink.h"
69
70 #if HAVE_SYS_RESOURCE_H
71 #include <sys/time.h>
72 #include <sys/types.h>
73 #include <sys/resource.h>
74 #elif HAVE_GETPROCESSTIMES
75 #include <windows.h>
76 #endif
77 #if HAVE_GETPROCESSMEMORYINFO
78 #include <windows.h>
79 #include <psapi.h>
80 #endif
81
82 #if HAVE_SYS_SELECT_H
83 #include <sys/select.h>
84 #endif
85
86 #if HAVE_TERMIOS_H
87 #include <fcntl.h>
88 #include <sys/ioctl.h>
89 #include <sys/time.h>
90 #include <termios.h>
91 #elif HAVE_KBHIT
92 #include <conio.h>
93 #endif
94
95 #if HAVE_PTHREADS
96 #include <pthread.h>
97 #endif
98
99 #include <time.h>
100
101 #include "ffmpeg.h"
102 #include "cmdutils.h"
103
104 #include "libavutil/avassert.h"
105
106 const char program_name[] = "ffmpeg";
107 const int program_birth_year = 2000;
108
109 static FILE *vstats_file;
110
111 const char *const forced_keyframes_const_names[] = {
112     "n",
113     "n_forced",
114     "prev_forced_n",
115     "prev_forced_t",
116     "t",
117     NULL
118 };
119
120 static void do_video_stats(OutputStream *ost, int frame_size);
121 static int64_t getutime(void);
122 static int64_t getmaxrss(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 static int64_t decode_error_stat[2];
132
133 static int current_time;
134 AVIOContext *progress_avio = NULL;
135
136 static uint8_t *subtitle_out;
137
138 #if HAVE_PTHREADS
139 /* signal to input threads that they should exit; set by the main thread */
140 static int transcoding_finished;
141 #endif
142
143 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
144
145 InputStream **input_streams = NULL;
146 int        nb_input_streams = 0;
147 InputFile   **input_files   = NULL;
148 int        nb_input_files   = 0;
149
150 OutputStream **output_streams = NULL;
151 int         nb_output_streams = 0;
152 OutputFile   **output_files   = NULL;
153 int         nb_output_files   = 0;
154
155 FilterGraph **filtergraphs;
156 int        nb_filtergraphs;
157
158 #if HAVE_TERMIOS_H
159
160 /* init terminal so that we can grab keys */
161 static struct termios oldtty;
162 static int restore_tty;
163 #endif
164
165
166 /* sub2video hack:
167    Convert subtitles to video with alpha to insert them in filter graphs.
168    This is a temporary solution until libavfilter gets real subtitles support.
169  */
170
171 static int sub2video_get_blank_frame(InputStream *ist)
172 {
173     int ret;
174     AVFrame *frame = ist->sub2video.frame;
175
176     av_frame_unref(frame);
177     ist->sub2video.frame->width  = ist->sub2video.w;
178     ist->sub2video.frame->height = ist->sub2video.h;
179     ist->sub2video.frame->format = AV_PIX_FMT_RGB32;
180     if ((ret = av_frame_get_buffer(frame, 32)) < 0)
181         return ret;
182     memset(frame->data[0], 0, frame->height * frame->linesize[0]);
183     return 0;
184 }
185
186 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
187                                 AVSubtitleRect *r)
188 {
189     uint32_t *pal, *dst2;
190     uint8_t *src, *src2;
191     int x, y;
192
193     if (r->type != SUBTITLE_BITMAP) {
194         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
195         return;
196     }
197     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
198         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
199         return;
200     }
201
202     dst += r->y * dst_linesize + r->x * 4;
203     src = r->pict.data[0];
204     pal = (uint32_t *)r->pict.data[1];
205     for (y = 0; y < r->h; y++) {
206         dst2 = (uint32_t *)dst;
207         src2 = src;
208         for (x = 0; x < r->w; x++)
209             *(dst2++) = pal[*(src2++)];
210         dst += dst_linesize;
211         src += r->pict.linesize[0];
212     }
213 }
214
215 static void sub2video_push_ref(InputStream *ist, int64_t pts)
216 {
217     AVFrame *frame = ist->sub2video.frame;
218     int i;
219
220     av_assert1(frame->data[0]);
221     ist->sub2video.last_pts = frame->pts = pts;
222     for (i = 0; i < ist->nb_filters; i++)
223         av_buffersrc_add_frame_flags(ist->filters[i]->filter, frame,
224                                      AV_BUFFERSRC_FLAG_KEEP_REF |
225                                      AV_BUFFERSRC_FLAG_PUSH);
226 }
227
228 static void sub2video_update(InputStream *ist, AVSubtitle *sub)
229 {
230     int w = ist->sub2video.w, h = ist->sub2video.h;
231     AVFrame *frame = ist->sub2video.frame;
232     int8_t *dst;
233     int     dst_linesize;
234     int num_rects, i;
235     int64_t pts, end_pts;
236
237     if (!frame)
238         return;
239     if (sub) {
240         pts       = av_rescale_q(sub->pts + sub->start_display_time * 1000,
241                                  AV_TIME_BASE_Q, ist->st->time_base);
242         end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000,
243                                  AV_TIME_BASE_Q, ist->st->time_base);
244         num_rects = sub->num_rects;
245     } else {
246         pts       = ist->sub2video.end_pts;
247         end_pts   = INT64_MAX;
248         num_rects = 0;
249     }
250     if (sub2video_get_blank_frame(ist) < 0) {
251         av_log(ist->st->codec, AV_LOG_ERROR,
252                "Impossible to get a blank canvas.\n");
253         return;
254     }
255     dst          = frame->data    [0];
256     dst_linesize = frame->linesize[0];
257     for (i = 0; i < num_rects; i++)
258         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
259     sub2video_push_ref(ist, pts);
260     ist->sub2video.end_pts = end_pts;
261 }
262
263 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
264 {
265     InputFile *infile = input_files[ist->file_index];
266     int i, j, nb_reqs;
267     int64_t pts2;
268
269     /* When a frame is read from a file, examine all sub2video streams in
270        the same file and send the sub2video frame again. Otherwise, decoded
271        video frames could be accumulating in the filter graph while a filter
272        (possibly overlay) is desperately waiting for a subtitle frame. */
273     for (i = 0; i < infile->nb_streams; i++) {
274         InputStream *ist2 = input_streams[infile->ist_index + i];
275         if (!ist2->sub2video.frame)
276             continue;
277         /* subtitles seem to be usually muxed ahead of other streams;
278            if not, substracting a larger time here is necessary */
279         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
280         /* do not send the heartbeat frame if the subtitle is already ahead */
281         if (pts2 <= ist2->sub2video.last_pts)
282             continue;
283         if (pts2 >= ist2->sub2video.end_pts || !ist2->sub2video.frame->data[0])
284             sub2video_update(ist2, NULL);
285         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
286             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
287         if (nb_reqs)
288             sub2video_push_ref(ist2, pts2);
289     }
290 }
291
292 static void sub2video_flush(InputStream *ist)
293 {
294     int i;
295
296     for (i = 0; i < ist->nb_filters; i++)
297         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
298 }
299
300 /* end of sub2video hack */
301
302 void term_exit(void)
303 {
304     av_log(NULL, AV_LOG_QUIET, "%s", "");
305 #if HAVE_TERMIOS_H
306     if(restore_tty)
307         tcsetattr (0, TCSANOW, &oldtty);
308 #endif
309 }
310
311 static volatile int received_sigterm = 0;
312 static volatile int received_nb_signals = 0;
313
314 static void
315 sigterm_handler(int sig)
316 {
317     received_sigterm = sig;
318     received_nb_signals++;
319     term_exit();
320     if(received_nb_signals > 3)
321         exit(123);
322 }
323
324 void term_init(void)
325 {
326 #if HAVE_TERMIOS_H
327     if(!run_as_daemon){
328         struct termios tty;
329         int istty = 1;
330 #if HAVE_ISATTY
331         istty = isatty(0) && isatty(2);
332 #endif
333         if (istty && tcgetattr (0, &tty) == 0) {
334             oldtty = tty;
335             restore_tty = 1;
336             atexit(term_exit);
337
338             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
339                              |INLCR|IGNCR|ICRNL|IXON);
340             tty.c_oflag |= OPOST;
341             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
342             tty.c_cflag &= ~(CSIZE|PARENB);
343             tty.c_cflag |= CS8;
344             tty.c_cc[VMIN] = 1;
345             tty.c_cc[VTIME] = 0;
346
347             tcsetattr (0, TCSANOW, &tty);
348         }
349         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
350     }
351 #endif
352     avformat_network_deinit();
353
354     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
355     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
356 #ifdef SIGXCPU
357     signal(SIGXCPU, sigterm_handler);
358 #endif
359 }
360
361 /* read a key without blocking */
362 static int read_key(void)
363 {
364     unsigned char ch;
365 #if HAVE_TERMIOS_H
366     int n = 1;
367     struct timeval tv;
368     fd_set rfds;
369
370     FD_ZERO(&rfds);
371     FD_SET(0, &rfds);
372     tv.tv_sec = 0;
373     tv.tv_usec = 0;
374     n = select(1, &rfds, NULL, NULL, &tv);
375     if (n > 0) {
376         n = read(0, &ch, 1);
377         if (n == 1)
378             return ch;
379
380         return n;
381     }
382 #elif HAVE_KBHIT
383 #    if HAVE_PEEKNAMEDPIPE
384     static int is_pipe;
385     static HANDLE input_handle;
386     DWORD dw, nchars;
387     if(!input_handle){
388         input_handle = GetStdHandle(STD_INPUT_HANDLE);
389         is_pipe = !GetConsoleMode(input_handle, &dw);
390     }
391
392     if (stdin->_cnt > 0) {
393         read(0, &ch, 1);
394         return ch;
395     }
396     if (is_pipe) {
397         /* When running under a GUI, you will end here. */
398         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
399             // input pipe may have been closed by the program that ran ffmpeg
400             return -1;
401         }
402         //Read it
403         if(nchars != 0) {
404             read(0, &ch, 1);
405             return ch;
406         }else{
407             return -1;
408         }
409     }
410 #    endif
411     if(kbhit())
412         return(getch());
413 #endif
414     return -1;
415 }
416
417 static int decode_interrupt_cb(void *ctx)
418 {
419     return received_nb_signals > 1;
420 }
421
422 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
423
424 static void exit_program(void)
425 {
426     int i, j;
427
428     if (do_benchmark) {
429         int maxrss = getmaxrss() / 1024;
430         printf("bench: maxrss=%ikB\n", maxrss);
431     }
432
433     for (i = 0; i < nb_filtergraphs; i++) {
434         avfilter_graph_free(&filtergraphs[i]->graph);
435         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
436             av_freep(&filtergraphs[i]->inputs[j]->name);
437             av_freep(&filtergraphs[i]->inputs[j]);
438         }
439         av_freep(&filtergraphs[i]->inputs);
440         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
441             av_freep(&filtergraphs[i]->outputs[j]->name);
442             av_freep(&filtergraphs[i]->outputs[j]);
443         }
444         av_freep(&filtergraphs[i]->outputs);
445         av_freep(&filtergraphs[i]->graph_desc);
446         av_freep(&filtergraphs[i]);
447     }
448     av_freep(&filtergraphs);
449
450     av_freep(&subtitle_out);
451
452     /* close files */
453     for (i = 0; i < nb_output_files; i++) {
454         AVFormatContext *s = output_files[i]->ctx;
455         if (s && !(s->oformat->flags & AVFMT_NOFILE) && s->pb)
456             avio_close(s->pb);
457         avformat_free_context(s);
458         av_dict_free(&output_files[i]->opts);
459         av_freep(&output_files[i]);
460     }
461     for (i = 0; i < nb_output_streams; i++) {
462         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
463         while (bsfc) {
464             AVBitStreamFilterContext *next = bsfc->next;
465             av_bitstream_filter_close(bsfc);
466             bsfc = next;
467         }
468         output_streams[i]->bitstream_filters = NULL;
469         avcodec_free_frame(&output_streams[i]->filtered_frame);
470
471         av_freep(&output_streams[i]->forced_keyframes);
472         av_expr_free(output_streams[i]->forced_keyframes_pexpr);
473         av_freep(&output_streams[i]->avfilter);
474         av_freep(&output_streams[i]->logfile_prefix);
475         av_freep(&output_streams[i]);
476     }
477     for (i = 0; i < nb_input_files; i++) {
478         avformat_close_input(&input_files[i]->ctx);
479         av_freep(&input_files[i]);
480     }
481     for (i = 0; i < nb_input_streams; i++) {
482         av_frame_free(&input_streams[i]->decoded_frame);
483         av_frame_free(&input_streams[i]->filter_frame);
484         av_dict_free(&input_streams[i]->opts);
485         avsubtitle_free(&input_streams[i]->prev_sub.subtitle);
486         av_frame_free(&input_streams[i]->sub2video.frame);
487         av_freep(&input_streams[i]->filters);
488         av_freep(&input_streams[i]);
489     }
490
491     if (vstats_file)
492         fclose(vstats_file);
493     av_free(vstats_filename);
494
495     av_freep(&input_streams);
496     av_freep(&input_files);
497     av_freep(&output_streams);
498     av_freep(&output_files);
499
500     uninit_opts();
501
502     avformat_network_deinit();
503
504     if (received_sigterm) {
505         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
506                (int) received_sigterm);
507     }
508 }
509
510 void assert_avoptions(AVDictionary *m)
511 {
512     AVDictionaryEntry *t;
513     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
514         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
515         exit(1);
516     }
517 }
518
519 static void abort_codec_experimental(AVCodec *c, int encoder)
520 {
521     exit(1);
522 }
523
524 static void update_benchmark(const char *fmt, ...)
525 {
526     if (do_benchmark_all) {
527         int64_t t = getutime();
528         va_list va;
529         char buf[1024];
530
531         if (fmt) {
532             va_start(va, fmt);
533             vsnprintf(buf, sizeof(buf), fmt, va);
534             va_end(va);
535             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
536         }
537         current_time = t;
538     }
539 }
540
541 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
542 {
543     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
544     AVCodecContext          *avctx = ost->st->codec;
545     int ret;
546
547     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
548         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
549         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
550
551     /*
552      * Audio encoders may split the packets --  #frames in != #packets out.
553      * But there is no reordering, so we can limit the number of output packets
554      * by simply dropping them here.
555      * Counting encoded video frames needs to be done separately because of
556      * reordering, see do_video_out()
557      */
558     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
559         if (ost->frame_number >= ost->max_frames) {
560             av_free_packet(pkt);
561             return;
562         }
563         ost->frame_number++;
564     }
565
566     while (bsfc) {
567         AVPacket new_pkt = *pkt;
568         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
569                                            &new_pkt.data, &new_pkt.size,
570                                            pkt->data, pkt->size,
571                                            pkt->flags & AV_PKT_FLAG_KEY);
572         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
573             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
574             if(t) {
575                 memcpy(t, new_pkt.data, new_pkt.size);
576                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
577                 new_pkt.data = t;
578                 new_pkt.buf = NULL;
579                 a = 1;
580             } else
581                 a = AVERROR(ENOMEM);
582         }
583         if (a > 0) {
584             av_free_packet(pkt);
585             new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
586                                            av_buffer_default_free, NULL, 0);
587             if (!new_pkt.buf)
588                 exit(1);
589         } else if (a < 0) {
590             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
591                    bsfc->filter->name, pkt->stream_index,
592                    avctx->codec ? avctx->codec->name : "copy");
593             print_error("", a);
594             if (exit_on_error)
595                 exit(1);
596         }
597         *pkt = new_pkt;
598
599         bsfc = bsfc->next;
600     }
601
602     if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS) &&
603         (avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) &&
604         pkt->dts != AV_NOPTS_VALUE &&
605         ost->last_mux_dts != AV_NOPTS_VALUE) {
606       int64_t max = ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
607       if (pkt->dts < max) {
608         int loglevel = max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG;
609         av_log(s, loglevel, "Non-monotonous DTS in output stream "
610                "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
611                ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
612         if (exit_on_error) {
613             av_log(NULL, AV_LOG_FATAL, "aborting.\n");
614             exit(1);
615         }
616         av_log(s, loglevel, "changing to %"PRId64". This may result "
617                "in incorrect timestamps in the output file.\n",
618                max);
619         if(pkt->pts >= pkt->dts)
620             pkt->pts = FFMAX(pkt->pts, max);
621         pkt->dts = max;
622       }
623     }
624     ost->last_mux_dts = pkt->dts;
625
626     pkt->stream_index = ost->index;
627
628     if (debug_ts) {
629         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
630                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
631                 av_get_media_type_string(ost->st->codec->codec_type),
632                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
633                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
634                 pkt->size
635               );
636     }
637
638     ret = av_interleaved_write_frame(s, pkt);
639     if (ret < 0) {
640         print_error("av_interleaved_write_frame()", ret);
641         exit(1);
642     }
643 }
644
645 static void close_output_stream(OutputStream *ost)
646 {
647     OutputFile *of = output_files[ost->file_index];
648
649     ost->finished = 1;
650     if (of->shortest) {
651         int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, AV_TIME_BASE_Q);
652         of->recording_time = FFMIN(of->recording_time, end);
653     }
654 }
655
656 static int check_recording_time(OutputStream *ost)
657 {
658     OutputFile *of = output_files[ost->file_index];
659
660     if (of->recording_time != INT64_MAX &&
661         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
662                       AV_TIME_BASE_Q) >= 0) {
663         close_output_stream(ost);
664         return 0;
665     }
666     return 1;
667 }
668
669 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
670                          AVFrame *frame)
671 {
672     AVCodecContext *enc = ost->st->codec;
673     AVPacket pkt;
674     int got_packet = 0;
675
676     av_init_packet(&pkt);
677     pkt.data = NULL;
678     pkt.size = 0;
679
680     if (!check_recording_time(ost))
681         return;
682
683     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
684         frame->pts = ost->sync_opts;
685     ost->sync_opts = frame->pts + frame->nb_samples;
686
687     av_assert0(pkt.size || !pkt.data);
688     update_benchmark(NULL);
689     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
690         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
691         exit(1);
692     }
693     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
694
695     if (got_packet) {
696         if (pkt.pts != AV_NOPTS_VALUE)
697             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
698         if (pkt.dts != AV_NOPTS_VALUE)
699             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
700         if (pkt.duration > 0)
701             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
702
703         if (debug_ts) {
704             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
705                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
706                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
707                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
708         }
709
710         audio_size += pkt.size;
711         write_frame(s, &pkt, ost);
712
713         av_free_packet(&pkt);
714     }
715 }
716
717 static void do_subtitle_out(AVFormatContext *s,
718                             OutputStream *ost,
719                             InputStream *ist,
720                             AVSubtitle *sub)
721 {
722     int subtitle_out_max_size = 1024 * 1024;
723     int subtitle_out_size, nb, i;
724     AVCodecContext *enc;
725     AVPacket pkt;
726     int64_t pts;
727
728     if (sub->pts == AV_NOPTS_VALUE) {
729         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
730         if (exit_on_error)
731             exit(1);
732         return;
733     }
734
735     enc = ost->st->codec;
736
737     if (!subtitle_out) {
738         subtitle_out = av_malloc(subtitle_out_max_size);
739     }
740
741     /* Note: DVB subtitle need one packet to draw them and one other
742        packet to clear them */
743     /* XXX: signal it in the codec context ? */
744     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
745         nb = 2;
746     else
747         nb = 1;
748
749     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
750     pts = sub->pts - output_files[ost->file_index]->start_time;
751     for (i = 0; i < nb; i++) {
752         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
753         if (!check_recording_time(ost))
754             return;
755
756         sub->pts = pts;
757         // start_display_time is required to be 0
758         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
759         sub->end_display_time  -= sub->start_display_time;
760         sub->start_display_time = 0;
761         if (i == 1)
762             sub->num_rects = 0;
763         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
764                                                     subtitle_out_max_size, sub);
765         if (subtitle_out_size < 0) {
766             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
767             exit(1);
768         }
769
770         av_init_packet(&pkt);
771         pkt.data = subtitle_out;
772         pkt.size = subtitle_out_size;
773         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
774         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
775         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
776             /* XXX: the pts correction is handled here. Maybe handling
777                it in the codec would be better */
778             if (i == 0)
779                 pkt.pts += 90 * sub->start_display_time;
780             else
781                 pkt.pts += 90 * sub->end_display_time;
782         }
783         subtitle_size += pkt.size;
784         write_frame(s, &pkt, ost);
785     }
786 }
787
788 static void do_video_out(AVFormatContext *s,
789                          OutputStream *ost,
790                          AVFrame *in_picture)
791 {
792     int ret, format_video_sync;
793     AVPacket pkt;
794     AVCodecContext *enc = ost->st->codec;
795     int nb_frames, i;
796     double sync_ipts, delta;
797     double duration = 0;
798     int frame_size = 0;
799     InputStream *ist = NULL;
800
801     if (ost->source_index >= 0)
802         ist = input_streams[ost->source_index];
803
804     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
805         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
806
807     sync_ipts = in_picture->pts;
808     delta = sync_ipts - ost->sync_opts + duration;
809
810     /* by default, we output a single frame */
811     nb_frames = 1;
812
813     format_video_sync = video_sync_method;
814     if (format_video_sync == VSYNC_AUTO)
815         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
816
817     switch (format_video_sync) {
818     case VSYNC_CFR:
819         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
820         if (delta < -1.1)
821             nb_frames = 0;
822         else if (delta > 1.1)
823             nb_frames = lrintf(delta);
824         break;
825     case VSYNC_VFR:
826         if (delta <= -0.6)
827             nb_frames = 0;
828         else if (delta > 0.6)
829             ost->sync_opts = lrint(sync_ipts);
830         break;
831     case VSYNC_DROP:
832     case VSYNC_PASSTHROUGH:
833         ost->sync_opts = lrint(sync_ipts);
834         break;
835     default:
836         av_assert0(0);
837     }
838
839     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
840     if (nb_frames == 0) {
841         nb_frames_drop++;
842         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
843         return;
844     } else if (nb_frames > 1) {
845         if (nb_frames > dts_error_threshold * 30) {
846             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
847             nb_frames_drop++;
848             return;
849         }
850         nb_frames_dup += nb_frames - 1;
851         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
852     }
853
854   /* duplicates frame if needed */
855   for (i = 0; i < nb_frames; i++) {
856     av_init_packet(&pkt);
857     pkt.data = NULL;
858     pkt.size = 0;
859
860     in_picture->pts = ost->sync_opts;
861
862 #if 1
863     if (!check_recording_time(ost))
864 #else
865     if (ost->frame_number >= ost->max_frames)
866 #endif
867         return;
868
869     if (s->oformat->flags & AVFMT_RAWPICTURE &&
870         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
871         /* raw pictures are written as AVPicture structure to
872            avoid any copies. We support temporarily the older
873            method. */
874         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
875         enc->coded_frame->top_field_first  = in_picture->top_field_first;
876         if (enc->coded_frame->interlaced_frame)
877             enc->field_order = enc->coded_frame->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
878         else
879             enc->field_order = AV_FIELD_PROGRESSIVE;
880         pkt.data   = (uint8_t *)in_picture;
881         pkt.size   =  sizeof(AVPicture);
882         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
883         pkt.flags |= AV_PKT_FLAG_KEY;
884
885         video_size += pkt.size;
886         write_frame(s, &pkt, ost);
887     } else {
888         int got_packet, forced_keyframe = 0;
889         double pts_time;
890
891         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME) &&
892             ost->top_field_first >= 0)
893             in_picture->top_field_first = !!ost->top_field_first;
894
895         if (in_picture->interlaced_frame) {
896             if (enc->codec->id == AV_CODEC_ID_MJPEG)
897                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
898             else
899                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
900         } else
901             enc->field_order = AV_FIELD_PROGRESSIVE;
902
903         in_picture->quality = ost->st->codec->global_quality;
904         if (!enc->me_threshold)
905             in_picture->pict_type = 0;
906
907         pts_time = in_picture->pts != AV_NOPTS_VALUE ?
908             in_picture->pts * av_q2d(enc->time_base) : NAN;
909         if (ost->forced_kf_index < ost->forced_kf_count &&
910             in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
911             ost->forced_kf_index++;
912             forced_keyframe = 1;
913         } else if (ost->forced_keyframes_pexpr) {
914             double res;
915             ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
916             res = av_expr_eval(ost->forced_keyframes_pexpr,
917                                ost->forced_keyframes_expr_const_values, NULL);
918             av_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
919                     ost->forced_keyframes_expr_const_values[FKF_N],
920                     ost->forced_keyframes_expr_const_values[FKF_N_FORCED],
921                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N],
922                     ost->forced_keyframes_expr_const_values[FKF_T],
923                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T],
924                     res);
925             if (res) {
926                 forced_keyframe = 1;
927                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] =
928                     ost->forced_keyframes_expr_const_values[FKF_N];
929                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] =
930                     ost->forced_keyframes_expr_const_values[FKF_T];
931                 ost->forced_keyframes_expr_const_values[FKF_N_FORCED] += 1;
932             }
933
934             ost->forced_keyframes_expr_const_values[FKF_N] += 1;
935         }
936         if (forced_keyframe) {
937             in_picture->pict_type = AV_PICTURE_TYPE_I;
938             av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
939         }
940
941         update_benchmark(NULL);
942         ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
943         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
944         if (ret < 0) {
945             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
946             exit(1);
947         }
948
949         if (got_packet) {
950             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
951                 pkt.pts = ost->sync_opts;
952
953             if (pkt.pts != AV_NOPTS_VALUE)
954                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
955             if (pkt.dts != AV_NOPTS_VALUE)
956                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
957
958             if (debug_ts) {
959                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
960                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
961                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
962                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
963             }
964
965             frame_size = pkt.size;
966             video_size += pkt.size;
967             write_frame(s, &pkt, ost);
968             av_free_packet(&pkt);
969
970             /* if two pass, output log */
971             if (ost->logfile && enc->stats_out) {
972                 fprintf(ost->logfile, "%s", enc->stats_out);
973             }
974         }
975     }
976     ost->sync_opts++;
977     /*
978      * For video, number of frames in == number of packets out.
979      * But there may be reordering, so we can't throw away frames on encoder
980      * flush, we need to limit them here, before they go into encoder.
981      */
982     ost->frame_number++;
983
984     if (vstats_filename && frame_size)
985         do_video_stats(ost, frame_size);
986   }
987 }
988
989 static double psnr(double d)
990 {
991     return -10.0 * log(d) / log(10.0);
992 }
993
994 static void do_video_stats(OutputStream *ost, int frame_size)
995 {
996     AVCodecContext *enc;
997     int frame_number;
998     double ti1, bitrate, avg_bitrate;
999
1000     /* this is executed just the first time do_video_stats is called */
1001     if (!vstats_file) {
1002         vstats_file = fopen(vstats_filename, "w");
1003         if (!vstats_file) {
1004             perror("fopen");
1005             exit(1);
1006         }
1007     }
1008
1009     enc = ost->st->codec;
1010     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1011         frame_number = ost->st->nb_frames;
1012         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1013         if (enc->flags&CODEC_FLAG_PSNR)
1014             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1015
1016         fprintf(vstats_file,"f_size= %6d ", frame_size);
1017         /* compute pts value */
1018         ti1 = ost->st->pts.val * av_q2d(enc->time_base);
1019         if (ti1 < 0.01)
1020             ti1 = 0.01;
1021
1022         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1023         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1024         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1025                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1026         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1027     }
1028 }
1029
1030 /**
1031  * Get and encode new output from any of the filtergraphs, without causing
1032  * activity.
1033  *
1034  * @return  0 for success, <0 for severe errors
1035  */
1036 static int reap_filters(void)
1037 {
1038     AVFrame *filtered_frame = NULL;
1039     int i;
1040     int64_t frame_pts;
1041
1042     /* Reap all buffers present in the buffer sinks */
1043     for (i = 0; i < nb_output_streams; i++) {
1044         OutputStream *ost = output_streams[i];
1045         OutputFile    *of = output_files[ost->file_index];
1046         int ret = 0;
1047
1048         if (!ost->filter)
1049             continue;
1050
1051         if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1052             return AVERROR(ENOMEM);
1053         } else
1054             avcodec_get_frame_defaults(ost->filtered_frame);
1055         filtered_frame = ost->filtered_frame;
1056
1057         while (1) {
1058             ret = av_buffersink_get_frame_flags(ost->filter->filter, filtered_frame,
1059                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1060             if (ret < 0) {
1061                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1062                     av_log(NULL, AV_LOG_WARNING,
1063                            "Error in av_buffersink_get_frame_flags(): %s\n", av_err2str(ret));
1064                 }
1065                 break;
1066             }
1067             frame_pts = AV_NOPTS_VALUE;
1068             if (filtered_frame->pts != AV_NOPTS_VALUE) {
1069                 filtered_frame->pts = frame_pts = av_rescale_q(filtered_frame->pts,
1070                                                 ost->filter->filter->inputs[0]->time_base,
1071                                                 ost->st->codec->time_base) -
1072                                     av_rescale_q(of->start_time,
1073                                                 AV_TIME_BASE_Q,
1074                                                 ost->st->codec->time_base);
1075             }
1076             //if (ost->source_index >= 0)
1077             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1078
1079
1080             switch (ost->filter->filter->inputs[0]->type) {
1081             case AVMEDIA_TYPE_VIDEO:
1082                 filtered_frame->pts = frame_pts;
1083                 if (!ost->frame_aspect_ratio.num)
1084                     ost->st->codec->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
1085
1086                 do_video_out(of->ctx, ost, filtered_frame);
1087                 break;
1088             case AVMEDIA_TYPE_AUDIO:
1089                 filtered_frame->pts = frame_pts;
1090                 if (!(ost->st->codec->codec->capabilities & CODEC_CAP_PARAM_CHANGE) &&
1091                     ost->st->codec->channels != av_frame_get_channels(filtered_frame)) {
1092                     av_log(NULL, AV_LOG_ERROR,
1093                            "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
1094                     break;
1095                 }
1096                 do_audio_out(of->ctx, ost, filtered_frame);
1097                 break;
1098             default:
1099                 // TODO support subtitle filters
1100                 av_assert0(0);
1101             }
1102
1103             av_frame_unref(filtered_frame);
1104         }
1105     }
1106
1107     return 0;
1108 }
1109
1110 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1111 {
1112     char buf[1024];
1113     AVBPrint buf_script;
1114     OutputStream *ost;
1115     AVFormatContext *oc;
1116     int64_t total_size;
1117     AVCodecContext *enc;
1118     int frame_number, vid, i;
1119     double bitrate;
1120     int64_t pts = INT64_MIN;
1121     static int64_t last_time = -1;
1122     static int qp_histogram[52];
1123     int hours, mins, secs, us;
1124
1125     if (!print_stats && !is_last_report && !progress_avio)
1126         return;
1127
1128     if (!is_last_report) {
1129         if (last_time == -1) {
1130             last_time = cur_time;
1131             return;
1132         }
1133         if ((cur_time - last_time) < 500000)
1134             return;
1135         last_time = cur_time;
1136     }
1137
1138
1139     oc = output_files[0]->ctx;
1140
1141     total_size = avio_size(oc->pb);
1142     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1143         total_size = avio_tell(oc->pb);
1144
1145     buf[0] = '\0';
1146     vid = 0;
1147     av_bprint_init(&buf_script, 0, 1);
1148     for (i = 0; i < nb_output_streams; i++) {
1149         float q = -1;
1150         ost = output_streams[i];
1151         enc = ost->st->codec;
1152         if (!ost->stream_copy && enc->coded_frame)
1153             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1154         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1155             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1156             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1157                        ost->file_index, ost->index, q);
1158         }
1159         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1160             float fps, t = (cur_time-timer_start) / 1000000.0;
1161
1162             frame_number = ost->frame_number;
1163             fps = t > 1 ? frame_number / t : 0;
1164             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1165                      frame_number, fps < 9.95, fps, q);
1166             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1167             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1168             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1169                        ost->file_index, ost->index, q);
1170             if (is_last_report)
1171                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1172             if (qp_hist) {
1173                 int j;
1174                 int qp = lrintf(q);
1175                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1176                     qp_histogram[qp]++;
1177                 for (j = 0; j < 32; j++)
1178                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1179             }
1180             if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1181                 int j;
1182                 double error, error_sum = 0;
1183                 double scale, scale_sum = 0;
1184                 double p;
1185                 char type[3] = { 'Y','U','V' };
1186                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1187                 for (j = 0; j < 3; j++) {
1188                     if (is_last_report) {
1189                         error = enc->error[j];
1190                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1191                     } else {
1192                         error = enc->coded_frame->error[j];
1193                         scale = enc->width * enc->height * 255.0 * 255.0;
1194                     }
1195                     if (j)
1196                         scale /= 4;
1197                     error_sum += error;
1198                     scale_sum += scale;
1199                     p = psnr(error / scale);
1200                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1201                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1202                                ost->file_index, ost->index, type[j] | 32, p);
1203                 }
1204                 p = psnr(error_sum / scale_sum);
1205                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1206                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1207                            ost->file_index, ost->index, p);
1208             }
1209             vid = 1;
1210         }
1211         /* compute min output value */
1212         if ((is_last_report || !ost->finished) && ost->st->pts.val != AV_NOPTS_VALUE)
1213             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1214                                           ost->st->time_base, AV_TIME_BASE_Q));
1215     }
1216
1217     secs = pts / AV_TIME_BASE;
1218     us = pts % AV_TIME_BASE;
1219     mins = secs / 60;
1220     secs %= 60;
1221     hours = mins / 60;
1222     mins %= 60;
1223
1224     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1225
1226     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1227                                  "size=N/A time=");
1228     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1229                                  "size=%8.0fkB time=", total_size / 1024.0);
1230     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1231              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1232              (100 * us) / AV_TIME_BASE);
1233     if (bitrate < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1234                               "bitrate=N/A");
1235     else             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1236                               "bitrate=%6.1fkbits/s", bitrate);
1237     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
1238     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1239     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1240     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1241                hours, mins, secs, us);
1242
1243     if (nb_frames_dup || nb_frames_drop)
1244         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1245                 nb_frames_dup, nb_frames_drop);
1246     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1247     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1248
1249     if (print_stats || is_last_report) {
1250         if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
1251             fprintf(stderr, "%s    \r", buf);
1252         } else
1253             av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1254
1255     fflush(stderr);
1256     }
1257
1258     if (progress_avio) {
1259         av_bprintf(&buf_script, "progress=%s\n",
1260                    is_last_report ? "end" : "continue");
1261         avio_write(progress_avio, buf_script.str,
1262                    FFMIN(buf_script.len, buf_script.size - 1));
1263         avio_flush(progress_avio);
1264         av_bprint_finalize(&buf_script, NULL);
1265         if (is_last_report) {
1266             avio_close(progress_avio);
1267             progress_avio = NULL;
1268         }
1269     }
1270
1271     if (is_last_report) {
1272         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1273         av_log(NULL, AV_LOG_INFO, "\n");
1274         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1275                video_size / 1024.0,
1276                audio_size / 1024.0,
1277                subtitle_size / 1024.0,
1278                extra_size / 1024.0,
1279                100.0 * (total_size - raw) / raw
1280         );
1281         if(video_size + audio_size + subtitle_size + extra_size == 0){
1282             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1283         }
1284     }
1285 }
1286
1287 static void flush_encoders(void)
1288 {
1289     int i, ret;
1290
1291     for (i = 0; i < nb_output_streams; i++) {
1292         OutputStream   *ost = output_streams[i];
1293         AVCodecContext *enc = ost->st->codec;
1294         AVFormatContext *os = output_files[ost->file_index]->ctx;
1295         int stop_encoding = 0;
1296
1297         if (!ost->encoding_needed)
1298             continue;
1299
1300         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1301             continue;
1302         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1303             continue;
1304
1305         for (;;) {
1306             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1307             const char *desc;
1308             int64_t *size;
1309
1310             switch (ost->st->codec->codec_type) {
1311             case AVMEDIA_TYPE_AUDIO:
1312                 encode = avcodec_encode_audio2;
1313                 desc   = "Audio";
1314                 size   = &audio_size;
1315                 break;
1316             case AVMEDIA_TYPE_VIDEO:
1317                 encode = avcodec_encode_video2;
1318                 desc   = "Video";
1319                 size   = &video_size;
1320                 break;
1321             default:
1322                 stop_encoding = 1;
1323             }
1324
1325             if (encode) {
1326                 AVPacket pkt;
1327                 int got_packet;
1328                 av_init_packet(&pkt);
1329                 pkt.data = NULL;
1330                 pkt.size = 0;
1331
1332                 update_benchmark(NULL);
1333                 ret = encode(enc, &pkt, NULL, &got_packet);
1334                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1335                 if (ret < 0) {
1336                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1337                     exit(1);
1338                 }
1339                 *size += pkt.size;
1340                 if (ost->logfile && enc->stats_out) {
1341                     fprintf(ost->logfile, "%s", enc->stats_out);
1342                 }
1343                 if (!got_packet) {
1344                     stop_encoding = 1;
1345                     break;
1346                 }
1347                 if (pkt.pts != AV_NOPTS_VALUE)
1348                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1349                 if (pkt.dts != AV_NOPTS_VALUE)
1350                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1351                 if (pkt.duration > 0)
1352                     pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1353                 write_frame(os, &pkt, ost);
1354                 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
1355                     do_video_stats(ost, pkt.size);
1356                 }
1357             }
1358
1359             if (stop_encoding)
1360                 break;
1361         }
1362     }
1363 }
1364
1365 /*
1366  * Check whether a packet from ist should be written into ost at this time
1367  */
1368 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1369 {
1370     OutputFile *of = output_files[ost->file_index];
1371     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1372
1373     if (ost->source_index != ist_index)
1374         return 0;
1375
1376     if (of->start_time && ist->pts < of->start_time)
1377         return 0;
1378
1379     return 1;
1380 }
1381
1382 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1383 {
1384     OutputFile *of = output_files[ost->file_index];
1385     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1386     AVPicture pict;
1387     AVPacket opkt;
1388
1389     av_init_packet(&opkt);
1390
1391     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1392         !ost->copy_initial_nonkeyframes)
1393         return;
1394
1395     if (!ost->frame_number && ist->pts < of->start_time &&
1396         !ost->copy_prior_start)
1397         return;
1398
1399     if (of->recording_time != INT64_MAX &&
1400         ist->pts >= of->recording_time + of->start_time) {
1401         close_output_stream(ost);
1402         return;
1403     }
1404
1405     /* force the input stream PTS */
1406     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1407         audio_size += pkt->size;
1408     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1409         video_size += pkt->size;
1410         ost->sync_opts++;
1411     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1412         subtitle_size += pkt->size;
1413     }
1414
1415     if (pkt->pts != AV_NOPTS_VALUE)
1416         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1417     else
1418         opkt.pts = AV_NOPTS_VALUE;
1419
1420     if (pkt->dts == AV_NOPTS_VALUE)
1421         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1422     else
1423         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1424     opkt.dts -= ost_tb_start_time;
1425
1426     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1427         int duration = av_get_audio_frame_duration(ist->st->codec, pkt->size);
1428         if(!duration)
1429             duration = ist->st->codec->frame_size;
1430         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1431                                                (AVRational){1, ist->st->codec->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
1432                                                ost->st->time_base) - ost_tb_start_time;
1433     }
1434
1435     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1436     opkt.flags    = pkt->flags;
1437
1438     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1439     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1440        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1441        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1442        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1443        ) {
1444         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY)) {
1445             opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1446             if (!opkt.buf)
1447                 exit(1);
1448         }
1449     } else {
1450         opkt.data = pkt->data;
1451         opkt.size = pkt->size;
1452     }
1453
1454     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1455         /* store AVPicture in AVPacket, as expected by the output format */
1456         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1457         opkt.data = (uint8_t *)&pict;
1458         opkt.size = sizeof(AVPicture);
1459         opkt.flags |= AV_PKT_FLAG_KEY;
1460     }
1461
1462     write_frame(of->ctx, &opkt, ost);
1463     ost->st->codec->frame_number++;
1464 }
1465
1466 int guess_input_channel_layout(InputStream *ist)
1467 {
1468     AVCodecContext *dec = ist->st->codec;
1469
1470     if (!dec->channel_layout) {
1471         char layout_name[256];
1472
1473         if (dec->channels > ist->guess_layout_max)
1474             return 0;
1475         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1476         if (!dec->channel_layout)
1477             return 0;
1478         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1479                                      dec->channels, dec->channel_layout);
1480         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1481                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1482     }
1483     return 1;
1484 }
1485
1486 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1487 {
1488     AVFrame *decoded_frame, *f;
1489     AVCodecContext *avctx = ist->st->codec;
1490     int i, ret, err = 0, resample_changed;
1491     AVRational decoded_frame_tb;
1492
1493     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1494         return AVERROR(ENOMEM);
1495     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1496         return AVERROR(ENOMEM);
1497     decoded_frame = ist->decoded_frame;
1498
1499     update_benchmark(NULL);
1500     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1501     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1502
1503     if (ret >= 0 && avctx->sample_rate <= 0) {
1504         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1505         ret = AVERROR_INVALIDDATA;
1506     }
1507
1508     if (*got_output || ret<0 || pkt->size)
1509         decode_error_stat[ret<0] ++;
1510
1511     if (!*got_output || ret < 0) {
1512         if (!pkt->size) {
1513             for (i = 0; i < ist->nb_filters; i++)
1514 #if 1
1515                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1516 #else
1517                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1518 #endif
1519         }
1520         return ret;
1521     }
1522
1523 #if 1
1524     /* increment next_dts to use for the case where the input stream does not
1525        have timestamps or there are multiple frames in the packet */
1526     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1527                      avctx->sample_rate;
1528     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1529                      avctx->sample_rate;
1530 #endif
1531
1532     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1533                        ist->resample_channels       != avctx->channels               ||
1534                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1535                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1536     if (resample_changed) {
1537         char layout1[64], layout2[64];
1538
1539         if (!guess_input_channel_layout(ist)) {
1540             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1541                    "layout for Input Stream #%d.%d\n", ist->file_index,
1542                    ist->st->index);
1543             exit(1);
1544         }
1545         decoded_frame->channel_layout = avctx->channel_layout;
1546
1547         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1548                                      ist->resample_channel_layout);
1549         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1550                                      decoded_frame->channel_layout);
1551
1552         av_log(NULL, AV_LOG_INFO,
1553                "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",
1554                ist->file_index, ist->st->index,
1555                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1556                ist->resample_channels, layout1,
1557                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1558                avctx->channels, layout2);
1559
1560         ist->resample_sample_fmt     = decoded_frame->format;
1561         ist->resample_sample_rate    = decoded_frame->sample_rate;
1562         ist->resample_channel_layout = decoded_frame->channel_layout;
1563         ist->resample_channels       = avctx->channels;
1564
1565         for (i = 0; i < nb_filtergraphs; i++)
1566             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1567                 FilterGraph *fg = filtergraphs[i];
1568                 int j;
1569                 if (configure_filtergraph(fg) < 0) {
1570                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1571                     exit(1);
1572                 }
1573                 for (j = 0; j < fg->nb_outputs; j++) {
1574                     OutputStream *ost = fg->outputs[j]->ost;
1575                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1576                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1577                         av_buffersink_set_frame_size(ost->filter->filter,
1578                                                      ost->st->codec->frame_size);
1579                 }
1580             }
1581     }
1582
1583     /* if the decoder provides a pts, use it instead of the last packet pts.
1584        the decoder could be delaying output by a packet or more. */
1585     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1586         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1587         decoded_frame_tb   = avctx->time_base;
1588     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1589         decoded_frame->pts = decoded_frame->pkt_pts;
1590         pkt->pts           = AV_NOPTS_VALUE;
1591         decoded_frame_tb   = ist->st->time_base;
1592     } else if (pkt->pts != AV_NOPTS_VALUE) {
1593         decoded_frame->pts = pkt->pts;
1594         pkt->pts           = AV_NOPTS_VALUE;
1595         decoded_frame_tb   = ist->st->time_base;
1596     }else {
1597         decoded_frame->pts = ist->dts;
1598         decoded_frame_tb   = AV_TIME_BASE_Q;
1599     }
1600     if (decoded_frame->pts != AV_NOPTS_VALUE)
1601         decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
1602                                               (AVRational){1, ist->st->codec->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
1603                                               (AVRational){1, ist->st->codec->sample_rate});
1604     for (i = 0; i < ist->nb_filters; i++) {
1605         if (i < ist->nb_filters - 1) {
1606             f = ist->filter_frame;
1607             err = av_frame_ref(f, decoded_frame);
1608             if (err < 0)
1609                 break;
1610         } else
1611             f = decoded_frame;
1612         err = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f,
1613                                      AV_BUFFERSRC_FLAG_PUSH);
1614         if (err < 0)
1615             break;
1616     }
1617     decoded_frame->pts = AV_NOPTS_VALUE;
1618
1619     av_frame_unref(ist->filter_frame);
1620     av_frame_unref(decoded_frame);
1621     return err < 0 ? err : ret;
1622 }
1623
1624 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1625 {
1626     AVFrame *decoded_frame, *f;
1627     void *buffer_to_free = NULL;
1628     int i, ret = 0, err = 0, resample_changed;
1629     int64_t best_effort_timestamp;
1630     AVRational *frame_sample_aspect;
1631
1632     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1633         return AVERROR(ENOMEM);
1634     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1635         return AVERROR(ENOMEM);
1636     decoded_frame = ist->decoded_frame;
1637     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1638
1639     update_benchmark(NULL);
1640     ret = avcodec_decode_video2(ist->st->codec,
1641                                 decoded_frame, got_output, pkt);
1642     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1643
1644     if (*got_output || ret<0 || pkt->size)
1645         decode_error_stat[ret<0] ++;
1646
1647     if (!*got_output || ret < 0) {
1648         if (!pkt->size) {
1649             for (i = 0; i < ist->nb_filters; i++)
1650 #if 1
1651                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1652 #else
1653                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1654 #endif
1655         }
1656         return ret;
1657     }
1658
1659     if(ist->top_field_first>=0)
1660         decoded_frame->top_field_first = ist->top_field_first;
1661
1662     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1663     if(best_effort_timestamp != AV_NOPTS_VALUE)
1664         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1665
1666     if (debug_ts) {
1667         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1668                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1669                 ist->st->index, av_ts2str(decoded_frame->pts),
1670                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1671                 best_effort_timestamp,
1672                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1673                 decoded_frame->key_frame, decoded_frame->pict_type);
1674     }
1675
1676     pkt->size = 0;
1677
1678     if (ist->st->sample_aspect_ratio.num)
1679         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1680
1681     resample_changed = ist->resample_width   != decoded_frame->width  ||
1682                        ist->resample_height  != decoded_frame->height ||
1683                        ist->resample_pix_fmt != decoded_frame->format;
1684     if (resample_changed) {
1685         av_log(NULL, AV_LOG_INFO,
1686                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1687                ist->file_index, ist->st->index,
1688                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1689                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1690
1691         ist->resample_width   = decoded_frame->width;
1692         ist->resample_height  = decoded_frame->height;
1693         ist->resample_pix_fmt = decoded_frame->format;
1694
1695         for (i = 0; i < nb_filtergraphs; i++) {
1696             if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
1697                 configure_filtergraph(filtergraphs[i]) < 0) {
1698                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1699                 exit(1);
1700             }
1701         }
1702     }
1703
1704     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1705     for (i = 0; i < ist->nb_filters; i++) {
1706         if (!frame_sample_aspect->num)
1707             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1708
1709         if (i < ist->nb_filters - 1) {
1710             f = ist->filter_frame;
1711             err = av_frame_ref(f, decoded_frame);
1712             if (err < 0)
1713                 break;
1714         } else
1715             f = decoded_frame;
1716         ret = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f, AV_BUFFERSRC_FLAG_PUSH);
1717         if (ret < 0) {
1718             av_log(NULL, AV_LOG_FATAL,
1719                    "Failed to inject frame into filter network: %s\n", av_err2str(ret));
1720             exit(1);
1721         }
1722     }
1723
1724     av_frame_unref(ist->filter_frame);
1725     av_frame_unref(decoded_frame);
1726     av_free(buffer_to_free);
1727     return err < 0 ? err : ret;
1728 }
1729
1730 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1731 {
1732     AVSubtitle subtitle;
1733     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1734                                           &subtitle, got_output, pkt);
1735
1736     if (*got_output || ret<0 || pkt->size)
1737         decode_error_stat[ret<0] ++;
1738
1739     if (ret < 0 || !*got_output) {
1740         if (!pkt->size)
1741             sub2video_flush(ist);
1742         return ret;
1743     }
1744
1745     if (ist->fix_sub_duration) {
1746         if (ist->prev_sub.got_output) {
1747             int end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1748                                  1000, AV_TIME_BASE);
1749             if (end < ist->prev_sub.subtitle.end_display_time) {
1750                 av_log(ist->st->codec, AV_LOG_DEBUG,
1751                        "Subtitle duration reduced from %d to %d\n",
1752                        ist->prev_sub.subtitle.end_display_time, end);
1753                 ist->prev_sub.subtitle.end_display_time = end;
1754             }
1755         }
1756         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1757         FFSWAP(int,        ret,         ist->prev_sub.ret);
1758         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1759     }
1760
1761     sub2video_update(ist, &subtitle);
1762
1763     if (!*got_output || !subtitle.num_rects)
1764         return ret;
1765
1766     for (i = 0; i < nb_output_streams; i++) {
1767         OutputStream *ost = output_streams[i];
1768
1769         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1770             continue;
1771
1772         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
1773     }
1774
1775     avsubtitle_free(&subtitle);
1776     return ret;
1777 }
1778
1779 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1780 static int output_packet(InputStream *ist, const AVPacket *pkt)
1781 {
1782     int ret = 0, i;
1783     int got_output = 0;
1784
1785     AVPacket avpkt;
1786     if (!ist->saw_first_ts) {
1787         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;
1788         ist->pts = 0;
1789         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1790             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1791             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1792         }
1793         ist->saw_first_ts = 1;
1794     }
1795
1796     if (ist->next_dts == AV_NOPTS_VALUE)
1797         ist->next_dts = ist->dts;
1798     if (ist->next_pts == AV_NOPTS_VALUE)
1799         ist->next_pts = ist->pts;
1800
1801     if (pkt == NULL) {
1802         /* EOF handling */
1803         av_init_packet(&avpkt);
1804         avpkt.data = NULL;
1805         avpkt.size = 0;
1806         goto handle_eof;
1807     } else {
1808         avpkt = *pkt;
1809     }
1810
1811     if (pkt->dts != AV_NOPTS_VALUE) {
1812         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1813         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1814             ist->next_pts = ist->pts = ist->dts;
1815     }
1816
1817     // while we have more to decode or while the decoder did output something on EOF
1818     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1819         int duration;
1820     handle_eof:
1821
1822         ist->pts = ist->next_pts;
1823         ist->dts = ist->next_dts;
1824
1825         if (avpkt.size && avpkt.size != pkt->size) {
1826             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1827                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1828             ist->showed_multi_packet_warning = 1;
1829         }
1830
1831         switch (ist->st->codec->codec_type) {
1832         case AVMEDIA_TYPE_AUDIO:
1833             ret = decode_audio    (ist, &avpkt, &got_output);
1834             break;
1835         case AVMEDIA_TYPE_VIDEO:
1836             ret = decode_video    (ist, &avpkt, &got_output);
1837             if (avpkt.duration) {
1838                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1839             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1840                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1841                 duration = ((int64_t)AV_TIME_BASE *
1842                                 ist->st->codec->time_base.num * ticks) /
1843                                 ist->st->codec->time_base.den;
1844             } else
1845                 duration = 0;
1846
1847             if(ist->dts != AV_NOPTS_VALUE && duration) {
1848                 ist->next_dts += duration;
1849             }else
1850                 ist->next_dts = AV_NOPTS_VALUE;
1851
1852             if (got_output)
1853                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1854             break;
1855         case AVMEDIA_TYPE_SUBTITLE:
1856             ret = transcode_subtitles(ist, &avpkt, &got_output);
1857             break;
1858         default:
1859             return -1;
1860         }
1861
1862         if (ret < 0)
1863             return ret;
1864
1865         avpkt.dts=
1866         avpkt.pts= AV_NOPTS_VALUE;
1867
1868         // touch data and size only if not EOF
1869         if (pkt) {
1870             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1871                 ret = avpkt.size;
1872             avpkt.data += ret;
1873             avpkt.size -= ret;
1874         }
1875         if (!got_output) {
1876             continue;
1877         }
1878     }
1879
1880     /* handle stream copy */
1881     if (!ist->decoding_needed) {
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 (ist->framerate.num) {
1890                 // TODO: Remove work-around for c99-to-c89 issue 7
1891                 AVRational time_base_q = AV_TIME_BASE_Q;
1892                 int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate));
1893                 ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q);
1894             } else if (pkt->duration) {
1895                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1896             } else if(ist->st->codec->time_base.num != 0) {
1897                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1898                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1899                                   ist->st->codec->time_base.num * ticks) /
1900                                   ist->st->codec->time_base.den;
1901             }
1902             break;
1903         }
1904         ist->pts = ist->dts;
1905         ist->next_pts = ist->next_dts;
1906     }
1907     for (i = 0; pkt && i < nb_output_streams; i++) {
1908         OutputStream *ost = output_streams[i];
1909
1910         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1911             continue;
1912
1913         do_streamcopy(ist, ost, pkt);
1914     }
1915
1916     return 0;
1917 }
1918
1919 static void print_sdp(void)
1920 {
1921     char sdp[16384];
1922     int i;
1923     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1924
1925     if (!avc)
1926         exit(1);
1927     for (i = 0; i < nb_output_files; i++)
1928         avc[i] = output_files[i]->ctx;
1929
1930     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1931     printf("SDP:\n%s\n", sdp);
1932     fflush(stdout);
1933     av_freep(&avc);
1934 }
1935
1936 static int init_input_stream(int ist_index, char *error, int error_len)
1937 {
1938     int ret;
1939     InputStream *ist = input_streams[ist_index];
1940
1941     if (ist->decoding_needed) {
1942         AVCodec *codec = ist->dec;
1943         if (!codec) {
1944             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1945                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1946             return AVERROR(EINVAL);
1947         }
1948
1949         av_opt_set_int(ist->st->codec, "refcounted_frames", 1, 0);
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 (ist && !ost->frame_rate.num)
2193                 ost->frame_rate = ist->framerate;
2194             if(ost->frame_rate.num)
2195                 codec->time_base = av_inv_q(ost->frame_rate);
2196
2197             av_reduce(&codec->time_base.num, &codec->time_base.den,
2198                         codec->time_base.num, codec->time_base.den, INT_MAX);
2199
2200             switch (codec->codec_type) {
2201             case AVMEDIA_TYPE_AUDIO:
2202                 if (audio_volume != 256) {
2203                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2204                     exit(1);
2205                 }
2206                 codec->channel_layout     = icodec->channel_layout;
2207                 codec->sample_rate        = icodec->sample_rate;
2208                 codec->channels           = icodec->channels;
2209                 codec->frame_size         = icodec->frame_size;
2210                 codec->audio_service_type = icodec->audio_service_type;
2211                 codec->block_align        = icodec->block_align;
2212                 if((codec->block_align == 1 || codec->block_align == 1152 || codec->block_align == 576) && codec->codec_id == AV_CODEC_ID_MP3)
2213                     codec->block_align= 0;
2214                 if(codec->codec_id == AV_CODEC_ID_AC3)
2215                     codec->block_align= 0;
2216                 break;
2217             case AVMEDIA_TYPE_VIDEO:
2218                 codec->pix_fmt            = icodec->pix_fmt;
2219                 codec->width              = icodec->width;
2220                 codec->height             = icodec->height;
2221                 codec->has_b_frames       = icodec->has_b_frames;
2222                 if (ost->frame_aspect_ratio.num) { // overridden by the -aspect cli option
2223                     codec->sample_aspect_ratio   =
2224                     ost->st->sample_aspect_ratio =
2225                         av_mul_q(ost->frame_aspect_ratio,
2226                                  (AVRational){ codec->height, codec->width });
2227                     av_log(NULL, AV_LOG_WARNING, "Overriding aspect ratio "
2228                            "with stream copy may produce invalid files\n");
2229                 } else if (!codec->sample_aspect_ratio.num) {
2230                     codec->sample_aspect_ratio   =
2231                     ost->st->sample_aspect_ratio =
2232                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2233                         ist->st->codec->sample_aspect_ratio.num ?
2234                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2235                 }
2236                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2237                 break;
2238             case AVMEDIA_TYPE_SUBTITLE:
2239                 codec->width  = icodec->width;
2240                 codec->height = icodec->height;
2241                 break;
2242             case AVMEDIA_TYPE_DATA:
2243             case AVMEDIA_TYPE_ATTACHMENT:
2244                 break;
2245             default:
2246                 abort();
2247             }
2248         } else {
2249             if (!ost->enc)
2250                 ost->enc = avcodec_find_encoder(codec->codec_id);
2251             if (!ost->enc) {
2252                 /* should only happen when a default codec is not present. */
2253                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2254                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2255                 ret = AVERROR(EINVAL);
2256                 goto dump_format;
2257             }
2258
2259             if (ist)
2260                 ist->decoding_needed++;
2261             ost->encoding_needed = 1;
2262
2263             if (!ost->filter &&
2264                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2265                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2266                     FilterGraph *fg;
2267                     fg = init_simple_filtergraph(ist, ost);
2268                     if (configure_filtergraph(fg)) {
2269                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2270                         exit(1);
2271                     }
2272             }
2273
2274             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2275                 if (ost->filter && !ost->frame_rate.num)
2276                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2277                 if (ist && !ost->frame_rate.num)
2278                     ost->frame_rate = ist->framerate;
2279                 if (ist && !ost->frame_rate.num)
2280                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2281 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2282                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2283                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2284                     ost->frame_rate = ost->enc->supported_framerates[idx];
2285                 }
2286             }
2287
2288             switch (codec->codec_type) {
2289             case AVMEDIA_TYPE_AUDIO:
2290                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2291                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2292                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2293                 codec->channels       = avfilter_link_get_channels(ost->filter->filter->inputs[0]);
2294                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2295                 break;
2296             case AVMEDIA_TYPE_VIDEO:
2297                 codec->time_base = av_inv_q(ost->frame_rate);
2298                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2299                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2300                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2301                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2302                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2303                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2304                 }
2305                 for (j = 0; j < ost->forced_kf_count; j++)
2306                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2307                                                          AV_TIME_BASE_Q,
2308                                                          codec->time_base);
2309
2310                 codec->width  = ost->filter->filter->inputs[0]->w;
2311                 codec->height = ost->filter->filter->inputs[0]->h;
2312                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2313                     ost->frame_aspect_ratio.num ? // overridden by the -aspect cli option
2314                     av_mul_q(ost->frame_aspect_ratio, (AVRational){ codec->height, codec->width }) :
2315                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2316                 if (!strncmp(ost->enc->name, "libx264", 7) &&
2317                     codec->pix_fmt == AV_PIX_FMT_NONE &&
2318                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2319                     av_log(NULL, AV_LOG_INFO,
2320                            "No pixel format specified, %s for H.264 encoding chosen.\n"
2321                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2322                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2323                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2324
2325                 if (!icodec ||
2326                     codec->width   != icodec->width  ||
2327                     codec->height  != icodec->height ||
2328                     codec->pix_fmt != icodec->pix_fmt) {
2329                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2330                 }
2331
2332                 if (ost->forced_keyframes) {
2333                     if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
2334                         ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
2335                                             forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
2336                         if (ret < 0) {
2337                             av_log(NULL, AV_LOG_ERROR,
2338                                    "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
2339                             return ret;
2340                         }
2341                         ost->forced_keyframes_expr_const_values[FKF_N] = 0;
2342                         ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
2343                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
2344                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;
2345                     } else {
2346                         parse_forced_key_frames(ost->forced_keyframes, ost, ost->st->codec);
2347                     }
2348                 }
2349                 break;
2350             case AVMEDIA_TYPE_SUBTITLE:
2351                 codec->time_base = (AVRational){1, 1000};
2352                 if (!codec->width) {
2353                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2354                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2355                 }
2356                 break;
2357             default:
2358                 abort();
2359                 break;
2360             }
2361             /* two pass mode */
2362             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2363                 char logfilename[1024];
2364                 FILE *f;
2365
2366                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2367                          ost->logfile_prefix ? ost->logfile_prefix :
2368                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2369                          i);
2370                 if (!strcmp(ost->enc->name, "libx264")) {
2371                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2372                 } else {
2373                     if (codec->flags & CODEC_FLAG_PASS2) {
2374                         char  *logbuffer;
2375                         size_t logbuffer_size;
2376                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2377                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2378                                    logfilename);
2379                             exit(1);
2380                         }
2381                         codec->stats_in = logbuffer;
2382                     }
2383                     if (codec->flags & CODEC_FLAG_PASS1) {
2384                         f = fopen(logfilename, "wb");
2385                         if (!f) {
2386                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2387                                 logfilename, strerror(errno));
2388                             exit(1);
2389                         }
2390                         ost->logfile = f;
2391                     }
2392                 }
2393             }
2394         }
2395     }
2396
2397     /* open each encoder */
2398     for (i = 0; i < nb_output_streams; i++) {
2399         ost = output_streams[i];
2400         if (ost->encoding_needed) {
2401             AVCodec      *codec = ost->enc;
2402             AVCodecContext *dec = NULL;
2403
2404             if ((ist = get_input_stream(ost)))
2405                 dec = ist->st->codec;
2406             if (dec && dec->subtitle_header) {
2407                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2408                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2409                 if (!ost->st->codec->subtitle_header) {
2410                     ret = AVERROR(ENOMEM);
2411                     goto dump_format;
2412                 }
2413                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2414                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2415             }
2416             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2417                 av_dict_set(&ost->opts, "threads", "auto", 0);
2418             if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
2419                 if (ret == AVERROR_EXPERIMENTAL)
2420                     abort_codec_experimental(codec, 1);
2421                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2422                         ost->file_index, ost->index);
2423                 goto dump_format;
2424             }
2425             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2426                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2427                 av_buffersink_set_frame_size(ost->filter->filter,
2428                                              ost->st->codec->frame_size);
2429             assert_avoptions(ost->opts);
2430             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2431                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2432                                              " It takes bits/s as argument, not kbits/s\n");
2433             extra_size += ost->st->codec->extradata_size;
2434
2435             if (ost->st->codec->me_threshold)
2436                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
2437         } else {
2438             av_opt_set_dict(ost->st->codec, &ost->opts);
2439         }
2440     }
2441
2442     /* init input streams */
2443     for (i = 0; i < nb_input_streams; i++)
2444         if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
2445             for (i = 0; i < nb_output_streams; i++) {
2446                 ost = output_streams[i];
2447                 avcodec_close(ost->st->codec);
2448             }
2449             goto dump_format;
2450         }
2451
2452     /* discard unused programs */
2453     for (i = 0; i < nb_input_files; i++) {
2454         InputFile *ifile = input_files[i];
2455         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2456             AVProgram *p = ifile->ctx->programs[j];
2457             int discard  = AVDISCARD_ALL;
2458
2459             for (k = 0; k < p->nb_stream_indexes; k++)
2460                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2461                     discard = AVDISCARD_DEFAULT;
2462                     break;
2463                 }
2464             p->discard = discard;
2465         }
2466     }
2467
2468     /* open files and write file headers */
2469     for (i = 0; i < nb_output_files; i++) {
2470         oc = output_files[i]->ctx;
2471         oc->interrupt_callback = int_cb;
2472         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2473             char errbuf[128];
2474             const char *errbuf_ptr = errbuf;
2475             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
2476                 errbuf_ptr = strerror(AVUNERROR(ret));
2477             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
2478             ret = AVERROR(EINVAL);
2479             goto dump_format;
2480         }
2481 //         assert_avoptions(output_files[i]->opts);
2482         if (strcmp(oc->oformat->name, "rtp")) {
2483             want_sdp = 0;
2484         }
2485     }
2486
2487  dump_format:
2488     /* dump the file output parameters - cannot be done before in case
2489        of stream copy */
2490     for (i = 0; i < nb_output_files; i++) {
2491         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2492     }
2493
2494     /* dump the stream mapping */
2495     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2496     for (i = 0; i < nb_input_streams; i++) {
2497         ist = input_streams[i];
2498
2499         for (j = 0; j < ist->nb_filters; j++) {
2500             if (ist->filters[j]->graph->graph_desc) {
2501                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2502                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2503                        ist->filters[j]->name);
2504                 if (nb_filtergraphs > 1)
2505                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2506                 av_log(NULL, AV_LOG_INFO, "\n");
2507             }
2508         }
2509     }
2510
2511     for (i = 0; i < nb_output_streams; i++) {
2512         ost = output_streams[i];
2513
2514         if (ost->attachment_filename) {
2515             /* an attached file */
2516             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2517                    ost->attachment_filename, ost->file_index, ost->index);
2518             continue;
2519         }
2520
2521         if (ost->filter && ost->filter->graph->graph_desc) {
2522             /* output from a complex graph */
2523             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2524             if (nb_filtergraphs > 1)
2525                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2526
2527             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2528                    ost->index, ost->enc ? ost->enc->name : "?");
2529             continue;
2530         }
2531
2532         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2533                input_streams[ost->source_index]->file_index,
2534                input_streams[ost->source_index]->st->index,
2535                ost->file_index,
2536                ost->index);
2537         if (ost->sync_ist != input_streams[ost->source_index])
2538             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2539                    ost->sync_ist->file_index,
2540                    ost->sync_ist->st->index);
2541         if (ost->stream_copy)
2542             av_log(NULL, AV_LOG_INFO, " (copy)");
2543         else
2544             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2545                    input_streams[ost->source_index]->dec->name : "?",
2546                    ost->enc ? ost->enc->name : "?");
2547         av_log(NULL, AV_LOG_INFO, "\n");
2548     }
2549
2550     if (ret) {
2551         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2552         return ret;
2553     }
2554
2555     if (want_sdp) {
2556         print_sdp();
2557     }
2558
2559     return 0;
2560 }
2561
2562 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2563 static int need_output(void)
2564 {
2565     int i;
2566
2567     for (i = 0; i < nb_output_streams; i++) {
2568         OutputStream *ost    = output_streams[i];
2569         OutputFile *of       = output_files[ost->file_index];
2570         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2571
2572         if (ost->finished ||
2573             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2574             continue;
2575         if (ost->frame_number >= ost->max_frames) {
2576             int j;
2577             for (j = 0; j < of->ctx->nb_streams; j++)
2578                 close_output_stream(output_streams[of->ost_index + j]);
2579             continue;
2580         }
2581
2582         return 1;
2583     }
2584
2585     return 0;
2586 }
2587
2588 /**
2589  * Select the output stream to process.
2590  *
2591  * @return  selected output stream, or NULL if none available
2592  */
2593 static OutputStream *choose_output(void)
2594 {
2595     int i;
2596     int64_t opts_min = INT64_MAX;
2597     OutputStream *ost_min = NULL;
2598
2599     for (i = 0; i < nb_output_streams; i++) {
2600         OutputStream *ost = output_streams[i];
2601         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2602                                     AV_TIME_BASE_Q);
2603         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2604             opts_min = opts;
2605             ost_min  = ost;
2606         }
2607     }
2608     return ost_min;
2609 }
2610
2611 static int check_keyboard_interaction(int64_t cur_time)
2612 {
2613     int i, ret, key;
2614     static int64_t last_time;
2615     if (received_nb_signals)
2616         return AVERROR_EXIT;
2617     /* read_key() returns 0 on EOF */
2618     if(cur_time - last_time >= 100000 && !run_as_daemon){
2619         key =  read_key();
2620         last_time = cur_time;
2621     }else
2622         key = -1;
2623     if (key == 'q')
2624         return AVERROR_EXIT;
2625     if (key == '+') av_log_set_level(av_log_get_level()+10);
2626     if (key == '-') av_log_set_level(av_log_get_level()-10);
2627     if (key == 's') qp_hist     ^= 1;
2628     if (key == 'h'){
2629         if (do_hex_dump){
2630             do_hex_dump = do_pkt_dump = 0;
2631         } else if(do_pkt_dump){
2632             do_hex_dump = 1;
2633         } else
2634             do_pkt_dump = 1;
2635         av_log_set_level(AV_LOG_DEBUG);
2636     }
2637     if (key == 'c' || key == 'C'){
2638         char buf[4096], target[64], command[256], arg[256] = {0};
2639         double time;
2640         int k, n = 0;
2641         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2642         i = 0;
2643         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2644             if (k > 0)
2645                 buf[i++] = k;
2646         buf[i] = 0;
2647         if (k > 0 &&
2648             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2649             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2650                    target, time, command, arg);
2651             for (i = 0; i < nb_filtergraphs; i++) {
2652                 FilterGraph *fg = filtergraphs[i];
2653                 if (fg->graph) {
2654                     if (time < 0) {
2655                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2656                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2657                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2658                     } else {
2659                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2660                     }
2661                 }
2662             }
2663         } else {
2664             av_log(NULL, AV_LOG_ERROR,
2665                    "Parse error, at least 3 arguments were expected, "
2666                    "only %d given in string '%s'\n", n, buf);
2667         }
2668     }
2669     if (key == 'd' || key == 'D'){
2670         int debug=0;
2671         if(key == 'D') {
2672             debug = input_streams[0]->st->codec->debug<<1;
2673             if(!debug) debug = 1;
2674             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2675                 debug += debug;
2676         }else
2677             if(scanf("%d", &debug)!=1)
2678                 fprintf(stderr,"error parsing debug value\n");
2679         for(i=0;i<nb_input_streams;i++) {
2680             input_streams[i]->st->codec->debug = debug;
2681         }
2682         for(i=0;i<nb_output_streams;i++) {
2683             OutputStream *ost = output_streams[i];
2684             ost->st->codec->debug = debug;
2685         }
2686         if(debug) av_log_set_level(AV_LOG_DEBUG);
2687         fprintf(stderr,"debug=%d\n", debug);
2688     }
2689     if (key == '?'){
2690         fprintf(stderr, "key    function\n"
2691                         "?      show this help\n"
2692                         "+      increase verbosity\n"
2693                         "-      decrease verbosity\n"
2694                         "c      Send command to filtergraph\n"
2695                         "D      cycle through available debug modes\n"
2696                         "h      dump packets/hex press to cycle through the 3 states\n"
2697                         "q      quit\n"
2698                         "s      Show QP histogram\n"
2699         );
2700     }
2701     return 0;
2702 }
2703
2704 #if HAVE_PTHREADS
2705 static void *input_thread(void *arg)
2706 {
2707     InputFile *f = arg;
2708     int ret = 0;
2709
2710     while (!transcoding_finished && ret >= 0) {
2711         AVPacket pkt;
2712         ret = av_read_frame(f->ctx, &pkt);
2713
2714         if (ret == AVERROR(EAGAIN)) {
2715             av_usleep(10000);
2716             ret = 0;
2717             continue;
2718         } else if (ret < 0)
2719             break;
2720
2721         pthread_mutex_lock(&f->fifo_lock);
2722         while (!av_fifo_space(f->fifo))
2723             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2724
2725         av_dup_packet(&pkt);
2726         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2727
2728         pthread_mutex_unlock(&f->fifo_lock);
2729     }
2730
2731     f->finished = 1;
2732     return NULL;
2733 }
2734
2735 static void free_input_threads(void)
2736 {
2737     int i;
2738
2739     if (nb_input_files == 1)
2740         return;
2741
2742     transcoding_finished = 1;
2743
2744     for (i = 0; i < nb_input_files; i++) {
2745         InputFile *f = input_files[i];
2746         AVPacket pkt;
2747
2748         if (!f->fifo || f->joined)
2749             continue;
2750
2751         pthread_mutex_lock(&f->fifo_lock);
2752         while (av_fifo_size(f->fifo)) {
2753             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2754             av_free_packet(&pkt);
2755         }
2756         pthread_cond_signal(&f->fifo_cond);
2757         pthread_mutex_unlock(&f->fifo_lock);
2758
2759         pthread_join(f->thread, NULL);
2760         f->joined = 1;
2761
2762         while (av_fifo_size(f->fifo)) {
2763             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2764             av_free_packet(&pkt);
2765         }
2766         av_fifo_free(f->fifo);
2767     }
2768 }
2769
2770 static int init_input_threads(void)
2771 {
2772     int i, ret;
2773
2774     if (nb_input_files == 1)
2775         return 0;
2776
2777     for (i = 0; i < nb_input_files; i++) {
2778         InputFile *f = input_files[i];
2779
2780         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2781             return AVERROR(ENOMEM);
2782
2783         pthread_mutex_init(&f->fifo_lock, NULL);
2784         pthread_cond_init (&f->fifo_cond, NULL);
2785
2786         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2787             return AVERROR(ret);
2788     }
2789     return 0;
2790 }
2791
2792 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2793 {
2794     int ret = 0;
2795
2796     pthread_mutex_lock(&f->fifo_lock);
2797
2798     if (av_fifo_size(f->fifo)) {
2799         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2800         pthread_cond_signal(&f->fifo_cond);
2801     } else {
2802         if (f->finished)
2803             ret = AVERROR_EOF;
2804         else
2805             ret = AVERROR(EAGAIN);
2806     }
2807
2808     pthread_mutex_unlock(&f->fifo_lock);
2809
2810     return ret;
2811 }
2812 #endif
2813
2814 static int get_input_packet(InputFile *f, AVPacket *pkt)
2815 {
2816     if (f->rate_emu) {
2817         int i;
2818         for (i = 0; i < f->nb_streams; i++) {
2819             InputStream *ist = input_streams[f->ist_index + i];
2820             int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
2821             int64_t now = av_gettime() - ist->start;
2822             if (pts > now)
2823                 return AVERROR(EAGAIN);
2824         }
2825     }
2826
2827 #if HAVE_PTHREADS
2828     if (nb_input_files > 1)
2829         return get_input_packet_mt(f, pkt);
2830 #endif
2831     return av_read_frame(f->ctx, pkt);
2832 }
2833
2834 static int got_eagain(void)
2835 {
2836     int i;
2837     for (i = 0; i < nb_output_streams; i++)
2838         if (output_streams[i]->unavailable)
2839             return 1;
2840     return 0;
2841 }
2842
2843 static void reset_eagain(void)
2844 {
2845     int i;
2846     for (i = 0; i < nb_input_files; i++)
2847         input_files[i]->eagain = 0;
2848     for (i = 0; i < nb_output_streams; i++)
2849         output_streams[i]->unavailable = 0;
2850 }
2851
2852 /*
2853  * Return
2854  * - 0 -- one packet was read and processed
2855  * - AVERROR(EAGAIN) -- no packets were available for selected file,
2856  *   this function should be called again
2857  * - AVERROR_EOF -- this function should not be called again
2858  */
2859 static int process_input(int file_index)
2860 {
2861     InputFile *ifile = input_files[file_index];
2862     AVFormatContext *is;
2863     InputStream *ist;
2864     AVPacket pkt;
2865     int ret, i, j;
2866
2867     is  = ifile->ctx;
2868     ret = get_input_packet(ifile, &pkt);
2869
2870     if (ret == AVERROR(EAGAIN)) {
2871         ifile->eagain = 1;
2872         return ret;
2873     }
2874     if (ret < 0) {
2875         if (ret != AVERROR_EOF) {
2876             print_error(is->filename, ret);
2877             if (exit_on_error)
2878                 exit(1);
2879         }
2880         ifile->eof_reached = 1;
2881
2882         for (i = 0; i < ifile->nb_streams; i++) {
2883             ist = input_streams[ifile->ist_index + i];
2884             if (ist->decoding_needed)
2885                 output_packet(ist, NULL);
2886
2887             /* mark all outputs that don't go through lavfi as finished */
2888             for (j = 0; j < nb_output_streams; j++) {
2889                 OutputStream *ost = output_streams[j];
2890
2891                 if (ost->source_index == ifile->ist_index + i &&
2892                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2893                     close_output_stream(ost);
2894             }
2895         }
2896
2897         return AVERROR(EAGAIN);
2898     }
2899
2900     reset_eagain();
2901
2902     if (do_pkt_dump) {
2903         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2904                          is->streams[pkt.stream_index]);
2905     }
2906     /* the following test is needed in case new streams appear
2907        dynamically in stream : we ignore them */
2908     if (pkt.stream_index >= ifile->nb_streams) {
2909         report_new_stream(file_index, &pkt);
2910         goto discard_packet;
2911     }
2912
2913     ist = input_streams[ifile->ist_index + pkt.stream_index];
2914     if (ist->discard)
2915         goto discard_packet;
2916
2917     if (debug_ts) {
2918         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
2919                "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",
2920                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2921                av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
2922                av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
2923                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2924                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2925                av_ts2str(input_files[ist->file_index]->ts_offset),
2926                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
2927     }
2928
2929     if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
2930         int64_t stime, stime2;
2931         // Correcting starttime based on the enabled streams
2932         // 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.
2933         //       so we instead do it here as part of discontinuity handling
2934         if (   ist->next_dts == AV_NOPTS_VALUE
2935             && ifile->ts_offset == -is->start_time
2936             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2937             int64_t new_start_time = INT64_MAX;
2938             for (i=0; i<is->nb_streams; i++) {
2939                 AVStream *st = is->streams[i];
2940                 if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
2941                     continue;
2942                 new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
2943             }
2944             if (new_start_time > is->start_time) {
2945                 av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
2946                 ifile->ts_offset = -new_start_time;
2947             }
2948         }
2949
2950         stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
2951         stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
2952         ist->wrap_correction_done = 1;
2953
2954         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2955             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
2956             ist->wrap_correction_done = 0;
2957         }
2958         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2959             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
2960             ist->wrap_correction_done = 0;
2961         }
2962     }
2963
2964     if (pkt.dts != AV_NOPTS_VALUE)
2965         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2966     if (pkt.pts != AV_NOPTS_VALUE)
2967         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2968
2969     if (pkt.pts != AV_NOPTS_VALUE)
2970         pkt.pts *= ist->ts_scale;
2971     if (pkt.dts != AV_NOPTS_VALUE)
2972         pkt.dts *= ist->ts_scale;
2973
2974     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts == AV_NOPTS_VALUE && !copy_ts
2975         && (is->iformat->flags & AVFMT_TS_DISCONT) && ifile->last_ts != AV_NOPTS_VALUE) {
2976         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2977         int64_t delta   = pkt_dts - ifile->last_ts;
2978         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2979             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2980                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)){
2981             ifile->ts_offset -= delta;
2982             av_log(NULL, AV_LOG_DEBUG,
2983                    "Inter stream timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2984                    delta, ifile->ts_offset);
2985             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2986             if (pkt.pts != AV_NOPTS_VALUE)
2987                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2988         }
2989     }
2990
2991     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2992         !copy_ts) {
2993         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2994         int64_t delta   = pkt_dts - ist->next_dts;
2995         if (is->iformat->flags & AVFMT_TS_DISCONT) {
2996         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2997             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2998                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2999             pkt_dts+1<ist->pts){
3000             ifile->ts_offset -= delta;
3001             av_log(NULL, AV_LOG_DEBUG,
3002                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3003                    delta, ifile->ts_offset);
3004             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3005             if (pkt.pts != AV_NOPTS_VALUE)
3006                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3007         }
3008         } else {
3009             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3010                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
3011                ) {
3012                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3013                 pkt.dts = AV_NOPTS_VALUE;
3014             }
3015             if (pkt.pts != AV_NOPTS_VALUE){
3016                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3017                 delta   = pkt_pts - ist->next_dts;
3018                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3019                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
3020                    ) {
3021                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3022                     pkt.pts = AV_NOPTS_VALUE;
3023                 }
3024             }
3025         }
3026     }
3027
3028     if (pkt.dts != AV_NOPTS_VALUE)
3029         ifile->last_ts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3030
3031     if (debug_ts) {
3032         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",
3033                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
3034                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3035                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3036                av_ts2str(input_files[ist->file_index]->ts_offset),
3037                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3038     }
3039
3040     sub2video_heartbeat(ist, pkt.pts);
3041
3042     ret = output_packet(ist, &pkt);
3043     if (ret < 0) {
3044         char buf[128];
3045         av_strerror(ret, buf, sizeof(buf));
3046         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
3047                 ist->file_index, ist->st->index, buf);
3048         if (exit_on_error)
3049             exit(1);
3050     }
3051
3052 discard_packet:
3053     av_free_packet(&pkt);
3054
3055     return 0;
3056 }
3057
3058 /**
3059  * Perform a step of transcoding for the specified filter graph.
3060  *
3061  * @param[in]  graph     filter graph to consider
3062  * @param[out] best_ist  input stream where a frame would allow to continue
3063  * @return  0 for success, <0 for error
3064  */
3065 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
3066 {
3067     int i, ret;
3068     int nb_requests, nb_requests_max = 0;
3069     InputFilter *ifilter;
3070     InputStream *ist;
3071
3072     *best_ist = NULL;
3073     ret = avfilter_graph_request_oldest(graph->graph);
3074     if (ret >= 0)
3075         return reap_filters();
3076
3077     if (ret == AVERROR_EOF) {
3078         ret = reap_filters();
3079         for (i = 0; i < graph->nb_outputs; i++)
3080             close_output_stream(graph->outputs[i]->ost);
3081         return ret;
3082     }
3083     if (ret != AVERROR(EAGAIN))
3084         return ret;
3085
3086     for (i = 0; i < graph->nb_inputs; i++) {
3087         ifilter = graph->inputs[i];
3088         ist = ifilter->ist;
3089         if (input_files[ist->file_index]->eagain ||
3090             input_files[ist->file_index]->eof_reached)
3091             continue;
3092         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
3093         if (nb_requests > nb_requests_max) {
3094             nb_requests_max = nb_requests;
3095             *best_ist = ist;
3096         }
3097     }
3098
3099     if (!*best_ist)
3100         for (i = 0; i < graph->nb_outputs; i++)
3101             graph->outputs[i]->ost->unavailable = 1;
3102
3103     return 0;
3104 }
3105
3106 /**
3107  * Run a single step of transcoding.
3108  *
3109  * @return  0 for success, <0 for error
3110  */
3111 static int transcode_step(void)
3112 {
3113     OutputStream *ost;
3114     InputStream  *ist;
3115     int ret;
3116
3117     ost = choose_output();
3118     if (!ost) {
3119         if (got_eagain()) {
3120             reset_eagain();
3121             av_usleep(10000);
3122             return 0;
3123         }
3124         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
3125         return AVERROR_EOF;
3126     }
3127
3128     if (ost->filter) {
3129         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
3130             return ret;
3131         if (!ist)
3132             return 0;
3133     } else {
3134         av_assert0(ost->source_index >= 0);
3135         ist = input_streams[ost->source_index];
3136     }
3137
3138     ret = process_input(ist->file_index);
3139     if (ret == AVERROR(EAGAIN)) {
3140         if (input_files[ist->file_index]->eagain)
3141             ost->unavailable = 1;
3142         return 0;
3143     }
3144     if (ret < 0)
3145         return ret == AVERROR_EOF ? 0 : ret;
3146
3147     return reap_filters();
3148 }
3149
3150 /*
3151  * The following code is the main loop of the file converter
3152  */
3153 static int transcode(void)
3154 {
3155     int ret, i;
3156     AVFormatContext *os;
3157     OutputStream *ost;
3158     InputStream *ist;
3159     int64_t timer_start;
3160
3161     ret = transcode_init();
3162     if (ret < 0)
3163         goto fail;
3164
3165     if (stdin_interaction) {
3166         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3167     }
3168
3169     timer_start = av_gettime();
3170
3171 #if HAVE_PTHREADS
3172     if ((ret = init_input_threads()) < 0)
3173         goto fail;
3174 #endif
3175
3176     while (!received_sigterm) {
3177         int64_t cur_time= av_gettime();
3178
3179         /* if 'q' pressed, exits */
3180         if (stdin_interaction)
3181             if (check_keyboard_interaction(cur_time) < 0)
3182                 break;
3183
3184         /* check if there's any stream where output is still needed */
3185         if (!need_output()) {
3186             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3187             break;
3188         }
3189
3190         ret = transcode_step();
3191         if (ret < 0) {
3192             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
3193                 continue;
3194
3195             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
3196             break;
3197         }
3198
3199         /* dump report by using the output first video and audio streams */
3200         print_report(0, timer_start, cur_time);
3201     }
3202 #if HAVE_PTHREADS
3203     free_input_threads();
3204 #endif
3205
3206     /* at the end of stream, we must flush the decoder buffers */
3207     for (i = 0; i < nb_input_streams; i++) {
3208         ist = input_streams[i];
3209         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3210             output_packet(ist, NULL);
3211         }
3212     }
3213     flush_encoders();
3214
3215     term_exit();
3216
3217     /* write the trailer if needed and close file */
3218     for (i = 0; i < nb_output_files; i++) {
3219         os = output_files[i]->ctx;
3220         av_write_trailer(os);
3221     }
3222
3223     /* dump report by using the first video and audio streams */
3224     print_report(1, timer_start, av_gettime());
3225
3226     /* close each encoder */
3227     for (i = 0; i < nb_output_streams; i++) {
3228         ost = output_streams[i];
3229         if (ost->encoding_needed) {
3230             av_freep(&ost->st->codec->stats_in);
3231             avcodec_close(ost->st->codec);
3232         }
3233     }
3234
3235     /* close each decoder */
3236     for (i = 0; i < nb_input_streams; i++) {
3237         ist = input_streams[i];
3238         if (ist->decoding_needed) {
3239             avcodec_close(ist->st->codec);
3240         }
3241     }
3242
3243     /* finished ! */
3244     ret = 0;
3245
3246  fail:
3247 #if HAVE_PTHREADS
3248     free_input_threads();
3249 #endif
3250
3251     if (output_streams) {
3252         for (i = 0; i < nb_output_streams; i++) {
3253             ost = output_streams[i];
3254             if (ost) {
3255                 if (ost->stream_copy)
3256                     av_freep(&ost->st->codec->extradata);
3257                 if (ost->logfile) {
3258                     fclose(ost->logfile);
3259                     ost->logfile = NULL;
3260                 }
3261                 av_freep(&ost->st->codec->subtitle_header);
3262                 av_freep(&ost->forced_kf_pts);
3263                 av_freep(&ost->apad);
3264                 av_dict_free(&ost->opts);
3265                 av_dict_free(&ost->swr_opts);
3266                 av_dict_free(&ost->resample_opts);
3267             }
3268         }
3269     }
3270     return ret;
3271 }
3272
3273
3274 static int64_t getutime(void)
3275 {
3276 #if HAVE_GETRUSAGE
3277     struct rusage rusage;
3278
3279     getrusage(RUSAGE_SELF, &rusage);
3280     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3281 #elif HAVE_GETPROCESSTIMES
3282     HANDLE proc;
3283     FILETIME c, e, k, u;
3284     proc = GetCurrentProcess();
3285     GetProcessTimes(proc, &c, &e, &k, &u);
3286     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3287 #else
3288     return av_gettime();
3289 #endif
3290 }
3291
3292 static int64_t getmaxrss(void)
3293 {
3294 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3295     struct rusage rusage;
3296     getrusage(RUSAGE_SELF, &rusage);
3297     return (int64_t)rusage.ru_maxrss * 1024;
3298 #elif HAVE_GETPROCESSMEMORYINFO
3299     HANDLE proc;
3300     PROCESS_MEMORY_COUNTERS memcounters;
3301     proc = GetCurrentProcess();
3302     memcounters.cb = sizeof(memcounters);
3303     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3304     return memcounters.PeakPagefileUsage;
3305 #else
3306     return 0;
3307 #endif
3308 }
3309
3310 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3311 {
3312 }
3313
3314 int main(int argc, char **argv)
3315 {
3316     int ret;
3317     int64_t ti;
3318
3319     atexit(exit_program);
3320
3321     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3322
3323     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3324     parse_loglevel(argc, argv, options);
3325
3326     if(argc>1 && !strcmp(argv[1], "-d")){
3327         run_as_daemon=1;
3328         av_log_set_callback(log_callback_null);
3329         argc--;
3330         argv++;
3331     }
3332
3333     avcodec_register_all();
3334 #if CONFIG_AVDEVICE
3335     avdevice_register_all();
3336 #endif
3337     avfilter_register_all();
3338     av_register_all();
3339     avformat_network_init();
3340
3341     show_banner(argc, argv, options);
3342
3343     term_init();
3344
3345     /* parse options and open all input/output files */
3346     ret = ffmpeg_parse_options(argc, argv);
3347     if (ret < 0)
3348         exit(1);
3349
3350     if (nb_output_files <= 0 && nb_input_files == 0) {
3351         show_usage();
3352         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3353         exit(1);
3354     }
3355
3356     /* file converter / grab */
3357     if (nb_output_files <= 0) {
3358         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3359         exit(1);
3360     }
3361
3362 //     if (nb_input_files == 0) {
3363 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3364 //         exit(1);
3365 //     }
3366
3367     current_time = ti = getutime();
3368     if (transcode() < 0)
3369         exit(1);
3370     ti = getutime() - ti;
3371     if (do_benchmark) {
3372         printf("bench: utime=%0.3fs\n", ti / 1000000.0);
3373     }
3374     av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" frames successfully decoded, %"PRIu64" decoding errors\n",
3375            decode_error_stat[0], decode_error_stat[1]);
3376     if (2*decode_error_stat[0] < decode_error_stat[1])
3377         exit(254);
3378
3379     exit(received_nb_signals ? 255 : 0);
3380     return 0;
3381 }