lavfi/mp: remove mp=spp.
[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 static void free_input_threads(void);
166
167
168 /* sub2video hack:
169    Convert subtitles to video with alpha to insert them in filter graphs.
170    This is a temporary solution until libavfilter gets real subtitles support.
171  */
172
173 static int sub2video_get_blank_frame(InputStream *ist)
174 {
175     int ret;
176     AVFrame *frame = ist->sub2video.frame;
177
178     av_frame_unref(frame);
179     ist->sub2video.frame->width  = ist->sub2video.w;
180     ist->sub2video.frame->height = ist->sub2video.h;
181     ist->sub2video.frame->format = AV_PIX_FMT_RGB32;
182     if ((ret = av_frame_get_buffer(frame, 32)) < 0)
183         return ret;
184     memset(frame->data[0], 0, frame->height * frame->linesize[0]);
185     return 0;
186 }
187
188 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
189                                 AVSubtitleRect *r)
190 {
191     uint32_t *pal, *dst2;
192     uint8_t *src, *src2;
193     int x, y;
194
195     if (r->type != SUBTITLE_BITMAP) {
196         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
197         return;
198     }
199     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
200         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
201         return;
202     }
203
204     dst += r->y * dst_linesize + r->x * 4;
205     src = r->pict.data[0];
206     pal = (uint32_t *)r->pict.data[1];
207     for (y = 0; y < r->h; y++) {
208         dst2 = (uint32_t *)dst;
209         src2 = src;
210         for (x = 0; x < r->w; x++)
211             *(dst2++) = pal[*(src2++)];
212         dst += dst_linesize;
213         src += r->pict.linesize[0];
214     }
215 }
216
217 static void sub2video_push_ref(InputStream *ist, int64_t pts)
218 {
219     AVFrame *frame = ist->sub2video.frame;
220     int i;
221
222     av_assert1(frame->data[0]);
223     ist->sub2video.last_pts = frame->pts = pts;
224     for (i = 0; i < ist->nb_filters; i++)
225         av_buffersrc_add_frame_flags(ist->filters[i]->filter, frame,
226                                      AV_BUFFERSRC_FLAG_KEEP_REF |
227                                      AV_BUFFERSRC_FLAG_PUSH);
228 }
229
230 static void sub2video_update(InputStream *ist, AVSubtitle *sub)
231 {
232     int w = ist->sub2video.w, h = ist->sub2video.h;
233     AVFrame *frame = ist->sub2video.frame;
234     int8_t *dst;
235     int     dst_linesize;
236     int num_rects, i;
237     int64_t pts, end_pts;
238
239     if (!frame)
240         return;
241     if (sub) {
242         pts       = av_rescale_q(sub->pts + sub->start_display_time * 1000,
243                                  AV_TIME_BASE_Q, ist->st->time_base);
244         end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000,
245                                  AV_TIME_BASE_Q, ist->st->time_base);
246         num_rects = sub->num_rects;
247     } else {
248         pts       = ist->sub2video.end_pts;
249         end_pts   = INT64_MAX;
250         num_rects = 0;
251     }
252     if (sub2video_get_blank_frame(ist) < 0) {
253         av_log(ist->st->codec, AV_LOG_ERROR,
254                "Impossible to get a blank canvas.\n");
255         return;
256     }
257     dst          = frame->data    [0];
258     dst_linesize = frame->linesize[0];
259     for (i = 0; i < num_rects; i++)
260         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
261     sub2video_push_ref(ist, pts);
262     ist->sub2video.end_pts = end_pts;
263 }
264
265 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
266 {
267     InputFile *infile = input_files[ist->file_index];
268     int i, j, nb_reqs;
269     int64_t pts2;
270
271     /* When a frame is read from a file, examine all sub2video streams in
272        the same file and send the sub2video frame again. Otherwise, decoded
273        video frames could be accumulating in the filter graph while a filter
274        (possibly overlay) is desperately waiting for a subtitle frame. */
275     for (i = 0; i < infile->nb_streams; i++) {
276         InputStream *ist2 = input_streams[infile->ist_index + i];
277         if (!ist2->sub2video.frame)
278             continue;
279         /* subtitles seem to be usually muxed ahead of other streams;
280            if not, substracting a larger time here is necessary */
281         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
282         /* do not send the heartbeat frame if the subtitle is already ahead */
283         if (pts2 <= ist2->sub2video.last_pts)
284             continue;
285         if (pts2 >= ist2->sub2video.end_pts || !ist2->sub2video.frame->data[0])
286             sub2video_update(ist2, NULL);
287         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
288             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
289         if (nb_reqs)
290             sub2video_push_ref(ist2, pts2);
291     }
292 }
293
294 static void sub2video_flush(InputStream *ist)
295 {
296     int i;
297
298     for (i = 0; i < ist->nb_filters; i++)
299         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
300 }
301
302 /* end of sub2video hack */
303
304 void term_exit(void)
305 {
306     av_log(NULL, AV_LOG_QUIET, "%s", "");
307 #if HAVE_TERMIOS_H
308     if(restore_tty)
309         tcsetattr (0, TCSANOW, &oldtty);
310 #endif
311 }
312
313 static volatile int received_sigterm = 0;
314 static volatile int received_nb_signals = 0;
315
316 static void
317 sigterm_handler(int sig)
318 {
319     received_sigterm = sig;
320     received_nb_signals++;
321     term_exit();
322     if(received_nb_signals > 3)
323         exit(123);
324 }
325
326 void term_init(void)
327 {
328 #if HAVE_TERMIOS_H
329     if(!run_as_daemon){
330         struct termios tty;
331         int istty = 1;
332 #if HAVE_ISATTY
333         istty = isatty(0) && isatty(2);
334 #endif
335         if (istty && tcgetattr (0, &tty) == 0) {
336             oldtty = tty;
337             restore_tty = 1;
338             atexit(term_exit);
339
340             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
341                              |INLCR|IGNCR|ICRNL|IXON);
342             tty.c_oflag |= OPOST;
343             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
344             tty.c_cflag &= ~(CSIZE|PARENB);
345             tty.c_cflag |= CS8;
346             tty.c_cc[VMIN] = 1;
347             tty.c_cc[VTIME] = 0;
348
349             tcsetattr (0, TCSANOW, &tty);
350         }
351         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
352     }
353 #endif
354     avformat_network_deinit();
355
356     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
357     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
358 #ifdef SIGXCPU
359     signal(SIGXCPU, sigterm_handler);
360 #endif
361 }
362
363 /* read a key without blocking */
364 static int read_key(void)
365 {
366     unsigned char ch;
367 #if HAVE_TERMIOS_H
368     int n = 1;
369     struct timeval tv;
370     fd_set rfds;
371
372     FD_ZERO(&rfds);
373     FD_SET(0, &rfds);
374     tv.tv_sec = 0;
375     tv.tv_usec = 0;
376     n = select(1, &rfds, NULL, NULL, &tv);
377     if (n > 0) {
378         n = read(0, &ch, 1);
379         if (n == 1)
380             return ch;
381
382         return n;
383     }
384 #elif HAVE_KBHIT
385 #    if HAVE_PEEKNAMEDPIPE
386     static int is_pipe;
387     static HANDLE input_handle;
388     DWORD dw, nchars;
389     if(!input_handle){
390         input_handle = GetStdHandle(STD_INPUT_HANDLE);
391         is_pipe = !GetConsoleMode(input_handle, &dw);
392     }
393
394     if (stdin->_cnt > 0) {
395         read(0, &ch, 1);
396         return ch;
397     }
398     if (is_pipe) {
399         /* When running under a GUI, you will end here. */
400         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
401             // input pipe may have been closed by the program that ran ffmpeg
402             return -1;
403         }
404         //Read it
405         if(nchars != 0) {
406             read(0, &ch, 1);
407             return ch;
408         }else{
409             return -1;
410         }
411     }
412 #    endif
413     if(kbhit())
414         return(getch());
415 #endif
416     return -1;
417 }
418
419 static int decode_interrupt_cb(void *ctx)
420 {
421     return received_nb_signals > 1;
422 }
423
424 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
425
426 static void exit_program(void)
427 {
428     int i, j;
429
430     if (do_benchmark) {
431         int maxrss = getmaxrss() / 1024;
432         printf("bench: maxrss=%ikB\n", maxrss);
433     }
434
435     for (i = 0; i < nb_filtergraphs; i++) {
436         avfilter_graph_free(&filtergraphs[i]->graph);
437         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
438             av_freep(&filtergraphs[i]->inputs[j]->name);
439             av_freep(&filtergraphs[i]->inputs[j]);
440         }
441         av_freep(&filtergraphs[i]->inputs);
442         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
443             av_freep(&filtergraphs[i]->outputs[j]->name);
444             av_freep(&filtergraphs[i]->outputs[j]);
445         }
446         av_freep(&filtergraphs[i]->outputs);
447         av_freep(&filtergraphs[i]->graph_desc);
448         av_freep(&filtergraphs[i]);
449     }
450     av_freep(&filtergraphs);
451
452     av_freep(&subtitle_out);
453
454     /* close files */
455     for (i = 0; i < nb_output_files; i++) {
456         AVFormatContext *s = output_files[i]->ctx;
457         if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE) && s->pb)
458             avio_close(s->pb);
459         avformat_free_context(s);
460         av_dict_free(&output_files[i]->opts);
461         av_freep(&output_files[i]);
462     }
463     for (i = 0; i < nb_output_streams; i++) {
464         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
465         while (bsfc) {
466             AVBitStreamFilterContext *next = bsfc->next;
467             av_bitstream_filter_close(bsfc);
468             bsfc = next;
469         }
470         output_streams[i]->bitstream_filters = NULL;
471         avcodec_free_frame(&output_streams[i]->filtered_frame);
472
473         av_freep(&output_streams[i]->forced_keyframes);
474         av_expr_free(output_streams[i]->forced_keyframes_pexpr);
475         av_freep(&output_streams[i]->avfilter);
476         av_freep(&output_streams[i]->logfile_prefix);
477         av_freep(&output_streams[i]);
478     }
479 #if HAVE_PTHREADS
480     free_input_threads();
481 #endif
482     for (i = 0; i < nb_input_files; i++) {
483         avformat_close_input(&input_files[i]->ctx);
484         av_freep(&input_files[i]);
485     }
486     for (i = 0; i < nb_input_streams; i++) {
487         av_frame_free(&input_streams[i]->decoded_frame);
488         av_frame_free(&input_streams[i]->filter_frame);
489         av_dict_free(&input_streams[i]->opts);
490         avsubtitle_free(&input_streams[i]->prev_sub.subtitle);
491         av_frame_free(&input_streams[i]->sub2video.frame);
492         av_freep(&input_streams[i]->filters);
493         av_freep(&input_streams[i]);
494     }
495
496     if (vstats_file)
497         fclose(vstats_file);
498     av_free(vstats_filename);
499
500     av_freep(&input_streams);
501     av_freep(&input_files);
502     av_freep(&output_streams);
503     av_freep(&output_files);
504
505     uninit_opts();
506
507     avformat_network_deinit();
508
509     if (received_sigterm) {
510         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
511                (int) received_sigterm);
512     }
513 }
514
515 void assert_avoptions(AVDictionary *m)
516 {
517     AVDictionaryEntry *t;
518     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
519         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
520         exit(1);
521     }
522 }
523
524 static void abort_codec_experimental(AVCodec *c, int encoder)
525 {
526     exit(1);
527 }
528
529 static void update_benchmark(const char *fmt, ...)
530 {
531     if (do_benchmark_all) {
532         int64_t t = getutime();
533         va_list va;
534         char buf[1024];
535
536         if (fmt) {
537             va_start(va, fmt);
538             vsnprintf(buf, sizeof(buf), fmt, va);
539             va_end(va);
540             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
541         }
542         current_time = t;
543     }
544 }
545
546 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
547 {
548     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
549     AVCodecContext          *avctx = ost->st->codec;
550     int ret;
551
552     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
553         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
554         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
555
556     /*
557      * Audio encoders may split the packets --  #frames in != #packets out.
558      * But there is no reordering, so we can limit the number of output packets
559      * by simply dropping them here.
560      * Counting encoded video frames needs to be done separately because of
561      * reordering, see do_video_out()
562      */
563     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
564         if (ost->frame_number >= ost->max_frames) {
565             av_free_packet(pkt);
566             return;
567         }
568         ost->frame_number++;
569     }
570
571     while (bsfc) {
572         AVPacket new_pkt = *pkt;
573         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
574                                            &new_pkt.data, &new_pkt.size,
575                                            pkt->data, pkt->size,
576                                            pkt->flags & AV_PKT_FLAG_KEY);
577         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
578             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
579             if(t) {
580                 memcpy(t, new_pkt.data, new_pkt.size);
581                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
582                 new_pkt.data = t;
583                 new_pkt.buf = NULL;
584                 a = 1;
585             } else
586                 a = AVERROR(ENOMEM);
587         }
588         if (a > 0) {
589             av_free_packet(pkt);
590             new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
591                                            av_buffer_default_free, NULL, 0);
592             if (!new_pkt.buf)
593                 exit(1);
594         } else if (a < 0) {
595             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
596                    bsfc->filter->name, pkt->stream_index,
597                    avctx->codec ? avctx->codec->name : "copy");
598             print_error("", a);
599             if (exit_on_error)
600                 exit(1);
601         }
602         *pkt = new_pkt;
603
604         bsfc = bsfc->next;
605     }
606
607     if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS) &&
608         (avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) &&
609         pkt->dts != AV_NOPTS_VALUE &&
610         ost->last_mux_dts != AV_NOPTS_VALUE) {
611       int64_t max = ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
612       if (pkt->dts < max) {
613         int loglevel = max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG;
614         av_log(s, loglevel, "Non-monotonous DTS in output stream "
615                "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
616                ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
617         if (exit_on_error) {
618             av_log(NULL, AV_LOG_FATAL, "aborting.\n");
619             exit(1);
620         }
621         av_log(s, loglevel, "changing to %"PRId64". This may result "
622                "in incorrect timestamps in the output file.\n",
623                max);
624         if(pkt->pts >= pkt->dts)
625             pkt->pts = FFMAX(pkt->pts, max);
626         pkt->dts = max;
627       }
628     }
629     ost->last_mux_dts = pkt->dts;
630
631     pkt->stream_index = ost->index;
632
633     if (debug_ts) {
634         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
635                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
636                 av_get_media_type_string(ost->st->codec->codec_type),
637                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
638                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
639                 pkt->size
640               );
641     }
642
643     ret = av_interleaved_write_frame(s, pkt);
644     if (ret < 0) {
645         print_error("av_interleaved_write_frame()", ret);
646         exit(1);
647     }
648 }
649
650 static void close_output_stream(OutputStream *ost)
651 {
652     OutputFile *of = output_files[ost->file_index];
653
654     ost->finished = 1;
655     if (of->shortest) {
656         int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, AV_TIME_BASE_Q);
657         of->recording_time = FFMIN(of->recording_time, end);
658     }
659 }
660
661 static int check_recording_time(OutputStream *ost)
662 {
663     OutputFile *of = output_files[ost->file_index];
664
665     if (of->recording_time != INT64_MAX &&
666         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
667                       AV_TIME_BASE_Q) >= 0) {
668         close_output_stream(ost);
669         return 0;
670     }
671     return 1;
672 }
673
674 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
675                          AVFrame *frame)
676 {
677     AVCodecContext *enc = ost->st->codec;
678     AVPacket pkt;
679     int got_packet = 0;
680
681     av_init_packet(&pkt);
682     pkt.data = NULL;
683     pkt.size = 0;
684
685     if (!check_recording_time(ost))
686         return;
687
688     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
689         frame->pts = ost->sync_opts;
690     ost->sync_opts = frame->pts + frame->nb_samples;
691
692     av_assert0(pkt.size || !pkt.data);
693     update_benchmark(NULL);
694     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
695         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
696         exit(1);
697     }
698     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
699
700     if (got_packet) {
701         if (pkt.pts != AV_NOPTS_VALUE)
702             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
703         if (pkt.dts != AV_NOPTS_VALUE)
704             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
705         if (pkt.duration > 0)
706             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
707
708         if (debug_ts) {
709             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
710                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
711                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
712                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
713         }
714
715         audio_size += pkt.size;
716         write_frame(s, &pkt, ost);
717
718         av_free_packet(&pkt);
719     }
720 }
721
722 static void do_subtitle_out(AVFormatContext *s,
723                             OutputStream *ost,
724                             InputStream *ist,
725                             AVSubtitle *sub)
726 {
727     int subtitle_out_max_size = 1024 * 1024;
728     int subtitle_out_size, nb, i;
729     AVCodecContext *enc;
730     AVPacket pkt;
731     int64_t pts;
732
733     if (sub->pts == AV_NOPTS_VALUE) {
734         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
735         if (exit_on_error)
736             exit(1);
737         return;
738     }
739
740     enc = ost->st->codec;
741
742     if (!subtitle_out) {
743         subtitle_out = av_malloc(subtitle_out_max_size);
744     }
745
746     /* Note: DVB subtitle need one packet to draw them and one other
747        packet to clear them */
748     /* XXX: signal it in the codec context ? */
749     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
750         nb = 2;
751     else
752         nb = 1;
753
754     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
755     pts = sub->pts - output_files[ost->file_index]->start_time;
756     for (i = 0; i < nb; i++) {
757         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
758         if (!check_recording_time(ost))
759             return;
760
761         sub->pts = pts;
762         // start_display_time is required to be 0
763         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
764         sub->end_display_time  -= sub->start_display_time;
765         sub->start_display_time = 0;
766         if (i == 1)
767             sub->num_rects = 0;
768         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
769                                                     subtitle_out_max_size, sub);
770         if (subtitle_out_size < 0) {
771             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
772             exit(1);
773         }
774
775         av_init_packet(&pkt);
776         pkt.data = subtitle_out;
777         pkt.size = subtitle_out_size;
778         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
779         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
780         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
781             /* XXX: the pts correction is handled here. Maybe handling
782                it in the codec would be better */
783             if (i == 0)
784                 pkt.pts += 90 * sub->start_display_time;
785             else
786                 pkt.pts += 90 * sub->end_display_time;
787         }
788         subtitle_size += pkt.size;
789         write_frame(s, &pkt, ost);
790     }
791 }
792
793 static void do_video_out(AVFormatContext *s,
794                          OutputStream *ost,
795                          AVFrame *in_picture)
796 {
797     int ret, format_video_sync;
798     AVPacket pkt;
799     AVCodecContext *enc = ost->st->codec;
800     int nb_frames, i;
801     double sync_ipts, delta;
802     double duration = 0;
803     int frame_size = 0;
804     InputStream *ist = NULL;
805
806     if (ost->source_index >= 0)
807         ist = input_streams[ost->source_index];
808
809     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
810         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
811
812     sync_ipts = in_picture->pts;
813     delta = sync_ipts - ost->sync_opts + duration;
814
815     /* by default, we output a single frame */
816     nb_frames = 1;
817
818     format_video_sync = video_sync_method;
819     if (format_video_sync == VSYNC_AUTO)
820         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
821
822     switch (format_video_sync) {
823     case VSYNC_CFR:
824         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
825         if (delta < -1.1)
826             nb_frames = 0;
827         else if (delta > 1.1)
828             nb_frames = lrintf(delta);
829         break;
830     case VSYNC_VFR:
831         if (delta <= -0.6)
832             nb_frames = 0;
833         else if (delta > 0.6)
834             ost->sync_opts = lrint(sync_ipts);
835         break;
836     case VSYNC_DROP:
837     case VSYNC_PASSTHROUGH:
838         ost->sync_opts = lrint(sync_ipts);
839         break;
840     default:
841         av_assert0(0);
842     }
843
844     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
845     if (nb_frames == 0) {
846         nb_frames_drop++;
847         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
848         return;
849     } else if (nb_frames > 1) {
850         if (nb_frames > dts_error_threshold * 30) {
851             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
852             nb_frames_drop++;
853             return;
854         }
855         nb_frames_dup += nb_frames - 1;
856         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
857     }
858
859   /* duplicates frame if needed */
860   for (i = 0; i < nb_frames; i++) {
861     av_init_packet(&pkt);
862     pkt.data = NULL;
863     pkt.size = 0;
864
865     in_picture->pts = ost->sync_opts;
866
867 #if 1
868     if (!check_recording_time(ost))
869 #else
870     if (ost->frame_number >= ost->max_frames)
871 #endif
872         return;
873
874     if (s->oformat->flags & AVFMT_RAWPICTURE &&
875         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
876         /* raw pictures are written as AVPicture structure to
877            avoid any copies. We support temporarily the older
878            method. */
879         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
880         enc->coded_frame->top_field_first  = in_picture->top_field_first;
881         if (enc->coded_frame->interlaced_frame)
882             enc->field_order = enc->coded_frame->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
883         else
884             enc->field_order = AV_FIELD_PROGRESSIVE;
885         pkt.data   = (uint8_t *)in_picture;
886         pkt.size   =  sizeof(AVPicture);
887         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
888         pkt.flags |= AV_PKT_FLAG_KEY;
889
890         video_size += pkt.size;
891         write_frame(s, &pkt, ost);
892     } else {
893         int got_packet, forced_keyframe = 0;
894         double pts_time;
895
896         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME) &&
897             ost->top_field_first >= 0)
898             in_picture->top_field_first = !!ost->top_field_first;
899
900         if (in_picture->interlaced_frame) {
901             if (enc->codec->id == AV_CODEC_ID_MJPEG)
902                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
903             else
904                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
905         } else
906             enc->field_order = AV_FIELD_PROGRESSIVE;
907
908         in_picture->quality = ost->st->codec->global_quality;
909         if (!enc->me_threshold)
910             in_picture->pict_type = 0;
911
912         pts_time = in_picture->pts != AV_NOPTS_VALUE ?
913             in_picture->pts * av_q2d(enc->time_base) : NAN;
914         if (ost->forced_kf_index < ost->forced_kf_count &&
915             in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
916             ost->forced_kf_index++;
917             forced_keyframe = 1;
918         } else if (ost->forced_keyframes_pexpr) {
919             double res;
920             ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
921             res = av_expr_eval(ost->forced_keyframes_pexpr,
922                                ost->forced_keyframes_expr_const_values, NULL);
923             av_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
924                     ost->forced_keyframes_expr_const_values[FKF_N],
925                     ost->forced_keyframes_expr_const_values[FKF_N_FORCED],
926                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N],
927                     ost->forced_keyframes_expr_const_values[FKF_T],
928                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T],
929                     res);
930             if (res) {
931                 forced_keyframe = 1;
932                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] =
933                     ost->forced_keyframes_expr_const_values[FKF_N];
934                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] =
935                     ost->forced_keyframes_expr_const_values[FKF_T];
936                 ost->forced_keyframes_expr_const_values[FKF_N_FORCED] += 1;
937             }
938
939             ost->forced_keyframes_expr_const_values[FKF_N] += 1;
940         }
941         if (forced_keyframe) {
942             in_picture->pict_type = AV_PICTURE_TYPE_I;
943             av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
944         }
945
946         update_benchmark(NULL);
947         ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
948         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
949         if (ret < 0) {
950             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
951             exit(1);
952         }
953
954         if (got_packet) {
955             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
956                 pkt.pts = ost->sync_opts;
957
958             if (pkt.pts != AV_NOPTS_VALUE)
959                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
960             if (pkt.dts != AV_NOPTS_VALUE)
961                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
962
963             if (debug_ts) {
964                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
965                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
966                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
967                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
968             }
969
970             frame_size = pkt.size;
971             video_size += pkt.size;
972             write_frame(s, &pkt, ost);
973             av_free_packet(&pkt);
974
975             /* if two pass, output log */
976             if (ost->logfile && enc->stats_out) {
977                 fprintf(ost->logfile, "%s", enc->stats_out);
978             }
979         }
980     }
981     ost->sync_opts++;
982     /*
983      * For video, number of frames in == number of packets out.
984      * But there may be reordering, so we can't throw away frames on encoder
985      * flush, we need to limit them here, before they go into encoder.
986      */
987     ost->frame_number++;
988
989     if (vstats_filename && frame_size)
990         do_video_stats(ost, frame_size);
991   }
992 }
993
994 static double psnr(double d)
995 {
996     return -10.0 * log(d) / log(10.0);
997 }
998
999 static void do_video_stats(OutputStream *ost, int frame_size)
1000 {
1001     AVCodecContext *enc;
1002     int frame_number;
1003     double ti1, bitrate, avg_bitrate;
1004
1005     /* this is executed just the first time do_video_stats is called */
1006     if (!vstats_file) {
1007         vstats_file = fopen(vstats_filename, "w");
1008         if (!vstats_file) {
1009             perror("fopen");
1010             exit(1);
1011         }
1012     }
1013
1014     enc = ost->st->codec;
1015     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1016         frame_number = ost->st->nb_frames;
1017         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1018         if (enc->flags&CODEC_FLAG_PSNR)
1019             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1020
1021         fprintf(vstats_file,"f_size= %6d ", frame_size);
1022         /* compute pts value */
1023         ti1 = ost->st->pts.val * av_q2d(enc->time_base);
1024         if (ti1 < 0.01)
1025             ti1 = 0.01;
1026
1027         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1028         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1029         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1030                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1031         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1032     }
1033 }
1034
1035 /**
1036  * Get and encode new output from any of the filtergraphs, without causing
1037  * activity.
1038  *
1039  * @return  0 for success, <0 for severe errors
1040  */
1041 static int reap_filters(void)
1042 {
1043     AVFrame *filtered_frame = NULL;
1044     int i;
1045     int64_t frame_pts;
1046
1047     /* Reap all buffers present in the buffer sinks */
1048     for (i = 0; i < nb_output_streams; i++) {
1049         OutputStream *ost = output_streams[i];
1050         OutputFile    *of = output_files[ost->file_index];
1051         int ret = 0;
1052
1053         if (!ost->filter)
1054             continue;
1055
1056         if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1057             return AVERROR(ENOMEM);
1058         } else
1059             avcodec_get_frame_defaults(ost->filtered_frame);
1060         filtered_frame = ost->filtered_frame;
1061
1062         while (1) {
1063             ret = av_buffersink_get_frame_flags(ost->filter->filter, filtered_frame,
1064                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1065             if (ret < 0) {
1066                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1067                     av_log(NULL, AV_LOG_WARNING,
1068                            "Error in av_buffersink_get_frame_flags(): %s\n", av_err2str(ret));
1069                 }
1070                 break;
1071             }
1072             frame_pts = AV_NOPTS_VALUE;
1073             if (filtered_frame->pts != AV_NOPTS_VALUE) {
1074                 filtered_frame->pts = frame_pts = av_rescale_q(filtered_frame->pts,
1075                                                 ost->filter->filter->inputs[0]->time_base,
1076                                                 ost->st->codec->time_base) -
1077                                     av_rescale_q(of->start_time,
1078                                                 AV_TIME_BASE_Q,
1079                                                 ost->st->codec->time_base);
1080             }
1081             //if (ost->source_index >= 0)
1082             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1083
1084
1085             switch (ost->filter->filter->inputs[0]->type) {
1086             case AVMEDIA_TYPE_VIDEO:
1087                 filtered_frame->pts = frame_pts;
1088                 if (!ost->frame_aspect_ratio.num)
1089                     ost->st->codec->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
1090
1091                 do_video_out(of->ctx, ost, filtered_frame);
1092                 break;
1093             case AVMEDIA_TYPE_AUDIO:
1094                 filtered_frame->pts = frame_pts;
1095                 if (!(ost->st->codec->codec->capabilities & CODEC_CAP_PARAM_CHANGE) &&
1096                     ost->st->codec->channels != av_frame_get_channels(filtered_frame)) {
1097                     av_log(NULL, AV_LOG_ERROR,
1098                            "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
1099                     break;
1100                 }
1101                 do_audio_out(of->ctx, ost, filtered_frame);
1102                 break;
1103             default:
1104                 // TODO support subtitle filters
1105                 av_assert0(0);
1106             }
1107
1108             av_frame_unref(filtered_frame);
1109         }
1110     }
1111
1112     return 0;
1113 }
1114
1115 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1116 {
1117     char buf[1024];
1118     AVBPrint buf_script;
1119     OutputStream *ost;
1120     AVFormatContext *oc;
1121     int64_t total_size;
1122     AVCodecContext *enc;
1123     int frame_number, vid, i;
1124     double bitrate;
1125     int64_t pts = INT64_MIN;
1126     static int64_t last_time = -1;
1127     static int qp_histogram[52];
1128     int hours, mins, secs, us;
1129
1130     if (!print_stats && !is_last_report && !progress_avio)
1131         return;
1132
1133     if (!is_last_report) {
1134         if (last_time == -1) {
1135             last_time = cur_time;
1136             return;
1137         }
1138         if ((cur_time - last_time) < 500000)
1139             return;
1140         last_time = cur_time;
1141     }
1142
1143
1144     oc = output_files[0]->ctx;
1145
1146     total_size = avio_size(oc->pb);
1147     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1148         total_size = avio_tell(oc->pb);
1149
1150     buf[0] = '\0';
1151     vid = 0;
1152     av_bprint_init(&buf_script, 0, 1);
1153     for (i = 0; i < nb_output_streams; i++) {
1154         float q = -1;
1155         ost = output_streams[i];
1156         enc = ost->st->codec;
1157         if (!ost->stream_copy && enc->coded_frame)
1158             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1159         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1160             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1161             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1162                        ost->file_index, ost->index, q);
1163         }
1164         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1165             float fps, t = (cur_time-timer_start) / 1000000.0;
1166
1167             frame_number = ost->frame_number;
1168             fps = t > 1 ? frame_number / t : 0;
1169             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1170                      frame_number, fps < 9.95, fps, q);
1171             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1172             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1173             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1174                        ost->file_index, ost->index, q);
1175             if (is_last_report)
1176                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1177             if (qp_hist) {
1178                 int j;
1179                 int qp = lrintf(q);
1180                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1181                     qp_histogram[qp]++;
1182                 for (j = 0; j < 32; j++)
1183                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1184             }
1185             if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1186                 int j;
1187                 double error, error_sum = 0;
1188                 double scale, scale_sum = 0;
1189                 double p;
1190                 char type[3] = { 'Y','U','V' };
1191                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1192                 for (j = 0; j < 3; j++) {
1193                     if (is_last_report) {
1194                         error = enc->error[j];
1195                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1196                     } else {
1197                         error = enc->coded_frame->error[j];
1198                         scale = enc->width * enc->height * 255.0 * 255.0;
1199                     }
1200                     if (j)
1201                         scale /= 4;
1202                     error_sum += error;
1203                     scale_sum += scale;
1204                     p = psnr(error / scale);
1205                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1206                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1207                                ost->file_index, ost->index, type[j] | 32, p);
1208                 }
1209                 p = psnr(error_sum / scale_sum);
1210                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1211                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1212                            ost->file_index, ost->index, p);
1213             }
1214             vid = 1;
1215         }
1216         /* compute min output value */
1217         if ((is_last_report || !ost->finished) && ost->st->pts.val != AV_NOPTS_VALUE)
1218             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1219                                           ost->st->time_base, AV_TIME_BASE_Q));
1220     }
1221
1222     secs = pts / AV_TIME_BASE;
1223     us = pts % AV_TIME_BASE;
1224     mins = secs / 60;
1225     secs %= 60;
1226     hours = mins / 60;
1227     mins %= 60;
1228
1229     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1230
1231     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1232                                  "size=N/A time=");
1233     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1234                                  "size=%8.0fkB time=", total_size / 1024.0);
1235     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1236              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1237              (100 * us) / AV_TIME_BASE);
1238     if (bitrate < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1239                               "bitrate=N/A");
1240     else             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1241                               "bitrate=%6.1fkbits/s", bitrate);
1242     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
1243     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1244     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1245     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1246                hours, mins, secs, us);
1247
1248     if (nb_frames_dup || nb_frames_drop)
1249         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1250                 nb_frames_dup, nb_frames_drop);
1251     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1252     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1253
1254     if (print_stats || is_last_report) {
1255         if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
1256             fprintf(stderr, "%s    \r", buf);
1257         } else
1258             av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1259
1260     fflush(stderr);
1261     }
1262
1263     if (progress_avio) {
1264         av_bprintf(&buf_script, "progress=%s\n",
1265                    is_last_report ? "end" : "continue");
1266         avio_write(progress_avio, buf_script.str,
1267                    FFMIN(buf_script.len, buf_script.size - 1));
1268         avio_flush(progress_avio);
1269         av_bprint_finalize(&buf_script, NULL);
1270         if (is_last_report) {
1271             avio_close(progress_avio);
1272             progress_avio = NULL;
1273         }
1274     }
1275
1276     if (is_last_report) {
1277         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1278         av_log(NULL, AV_LOG_INFO, "\n");
1279         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1280                video_size / 1024.0,
1281                audio_size / 1024.0,
1282                subtitle_size / 1024.0,
1283                extra_size / 1024.0,
1284                100.0 * (total_size - raw) / raw
1285         );
1286         if(video_size + audio_size + subtitle_size + extra_size == 0){
1287             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1288         }
1289     }
1290 }
1291
1292 static void flush_encoders(void)
1293 {
1294     int i, ret;
1295
1296     for (i = 0; i < nb_output_streams; i++) {
1297         OutputStream   *ost = output_streams[i];
1298         AVCodecContext *enc = ost->st->codec;
1299         AVFormatContext *os = output_files[ost->file_index]->ctx;
1300         int stop_encoding = 0;
1301
1302         if (!ost->encoding_needed)
1303             continue;
1304
1305         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1306             continue;
1307         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1308             continue;
1309
1310         for (;;) {
1311             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1312             const char *desc;
1313             int64_t *size;
1314
1315             switch (ost->st->codec->codec_type) {
1316             case AVMEDIA_TYPE_AUDIO:
1317                 encode = avcodec_encode_audio2;
1318                 desc   = "Audio";
1319                 size   = &audio_size;
1320                 break;
1321             case AVMEDIA_TYPE_VIDEO:
1322                 encode = avcodec_encode_video2;
1323                 desc   = "Video";
1324                 size   = &video_size;
1325                 break;
1326             default:
1327                 stop_encoding = 1;
1328             }
1329
1330             if (encode) {
1331                 AVPacket pkt;
1332                 int got_packet;
1333                 av_init_packet(&pkt);
1334                 pkt.data = NULL;
1335                 pkt.size = 0;
1336
1337                 update_benchmark(NULL);
1338                 ret = encode(enc, &pkt, NULL, &got_packet);
1339                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1340                 if (ret < 0) {
1341                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1342                     exit(1);
1343                 }
1344                 *size += pkt.size;
1345                 if (ost->logfile && enc->stats_out) {
1346                     fprintf(ost->logfile, "%s", enc->stats_out);
1347                 }
1348                 if (!got_packet) {
1349                     stop_encoding = 1;
1350                     break;
1351                 }
1352                 if (pkt.pts != AV_NOPTS_VALUE)
1353                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1354                 if (pkt.dts != AV_NOPTS_VALUE)
1355                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1356                 if (pkt.duration > 0)
1357                     pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1358                 write_frame(os, &pkt, ost);
1359                 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
1360                     do_video_stats(ost, pkt.size);
1361                 }
1362             }
1363
1364             if (stop_encoding)
1365                 break;
1366         }
1367     }
1368 }
1369
1370 /*
1371  * Check whether a packet from ist should be written into ost at this time
1372  */
1373 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1374 {
1375     OutputFile *of = output_files[ost->file_index];
1376     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1377
1378     if (ost->source_index != ist_index)
1379         return 0;
1380
1381     if (of->start_time && ist->pts < of->start_time)
1382         return 0;
1383
1384     return 1;
1385 }
1386
1387 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1388 {
1389     OutputFile *of = output_files[ost->file_index];
1390     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1391     int64_t ist_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ist->st->time_base);
1392     AVPicture pict;
1393     AVPacket opkt;
1394
1395     av_init_packet(&opkt);
1396
1397     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1398         !ost->copy_initial_nonkeyframes)
1399         return;
1400
1401     if (pkt->pts == AV_NOPTS_VALUE) {
1402         if (!ost->frame_number && ist->pts < of->start_time &&
1403             !ost->copy_prior_start)
1404             return;
1405     } else {
1406         if (!ost->frame_number && pkt->pts < ist_tb_start_time &&
1407             !ost->copy_prior_start)
1408             return;
1409     }
1410
1411     if (of->recording_time != INT64_MAX &&
1412         ist->pts >= of->recording_time + of->start_time) {
1413         close_output_stream(ost);
1414         return;
1415     }
1416
1417     /* force the input stream PTS */
1418     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1419         audio_size += pkt->size;
1420     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1421         video_size += pkt->size;
1422         ost->sync_opts++;
1423     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1424         subtitle_size += pkt->size;
1425     }
1426
1427     if (pkt->pts != AV_NOPTS_VALUE)
1428         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1429     else
1430         opkt.pts = AV_NOPTS_VALUE;
1431
1432     if (pkt->dts == AV_NOPTS_VALUE)
1433         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1434     else
1435         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1436     opkt.dts -= ost_tb_start_time;
1437
1438     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1439         int duration = av_get_audio_frame_duration(ist->st->codec, pkt->size);
1440         if(!duration)
1441             duration = ist->st->codec->frame_size;
1442         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1443                                                (AVRational){1, ist->st->codec->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
1444                                                ost->st->time_base) - ost_tb_start_time;
1445     }
1446
1447     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1448     opkt.flags    = pkt->flags;
1449
1450     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1451     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1452        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1453        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1454        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1455        ) {
1456         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY)) {
1457             opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1458             if (!opkt.buf)
1459                 exit(1);
1460         }
1461     } else {
1462         opkt.data = pkt->data;
1463         opkt.size = pkt->size;
1464     }
1465
1466     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1467         /* store AVPicture in AVPacket, as expected by the output format */
1468         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1469         opkt.data = (uint8_t *)&pict;
1470         opkt.size = sizeof(AVPicture);
1471         opkt.flags |= AV_PKT_FLAG_KEY;
1472     }
1473
1474     write_frame(of->ctx, &opkt, ost);
1475     ost->st->codec->frame_number++;
1476 }
1477
1478 int guess_input_channel_layout(InputStream *ist)
1479 {
1480     AVCodecContext *dec = ist->st->codec;
1481
1482     if (!dec->channel_layout) {
1483         char layout_name[256];
1484
1485         if (dec->channels > ist->guess_layout_max)
1486             return 0;
1487         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1488         if (!dec->channel_layout)
1489             return 0;
1490         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1491                                      dec->channels, dec->channel_layout);
1492         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1493                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1494     }
1495     return 1;
1496 }
1497
1498 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1499 {
1500     AVFrame *decoded_frame, *f;
1501     AVCodecContext *avctx = ist->st->codec;
1502     int i, ret, err = 0, resample_changed;
1503     AVRational decoded_frame_tb;
1504
1505     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1506         return AVERROR(ENOMEM);
1507     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1508         return AVERROR(ENOMEM);
1509     decoded_frame = ist->decoded_frame;
1510
1511     update_benchmark(NULL);
1512     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1513     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1514
1515     if (ret >= 0 && avctx->sample_rate <= 0) {
1516         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1517         ret = AVERROR_INVALIDDATA;
1518     }
1519
1520     if (*got_output || ret<0 || pkt->size)
1521         decode_error_stat[ret<0] ++;
1522
1523     if (!*got_output || ret < 0) {
1524         if (!pkt->size) {
1525             for (i = 0; i < ist->nb_filters; i++)
1526 #if 1
1527                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1528 #else
1529                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1530 #endif
1531         }
1532         return ret;
1533     }
1534
1535 #if 1
1536     /* increment next_dts to use for the case where the input stream does not
1537        have timestamps or there are multiple frames in the packet */
1538     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1539                      avctx->sample_rate;
1540     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1541                      avctx->sample_rate;
1542 #endif
1543
1544     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1545                        ist->resample_channels       != avctx->channels               ||
1546                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1547                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1548     if (resample_changed) {
1549         char layout1[64], layout2[64];
1550
1551         if (!guess_input_channel_layout(ist)) {
1552             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1553                    "layout for Input Stream #%d.%d\n", ist->file_index,
1554                    ist->st->index);
1555             exit(1);
1556         }
1557         decoded_frame->channel_layout = avctx->channel_layout;
1558
1559         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1560                                      ist->resample_channel_layout);
1561         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1562                                      decoded_frame->channel_layout);
1563
1564         av_log(NULL, AV_LOG_INFO,
1565                "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",
1566                ist->file_index, ist->st->index,
1567                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1568                ist->resample_channels, layout1,
1569                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1570                avctx->channels, layout2);
1571
1572         ist->resample_sample_fmt     = decoded_frame->format;
1573         ist->resample_sample_rate    = decoded_frame->sample_rate;
1574         ist->resample_channel_layout = decoded_frame->channel_layout;
1575         ist->resample_channels       = avctx->channels;
1576
1577         for (i = 0; i < nb_filtergraphs; i++)
1578             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1579                 FilterGraph *fg = filtergraphs[i];
1580                 int j;
1581                 if (configure_filtergraph(fg) < 0) {
1582                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1583                     exit(1);
1584                 }
1585                 for (j = 0; j < fg->nb_outputs; j++) {
1586                     OutputStream *ost = fg->outputs[j]->ost;
1587                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1588                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1589                         av_buffersink_set_frame_size(ost->filter->filter,
1590                                                      ost->st->codec->frame_size);
1591                 }
1592             }
1593     }
1594
1595     /* if the decoder provides a pts, use it instead of the last packet pts.
1596        the decoder could be delaying output by a packet or more. */
1597     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1598         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1599         decoded_frame_tb   = avctx->time_base;
1600     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1601         decoded_frame->pts = decoded_frame->pkt_pts;
1602         pkt->pts           = AV_NOPTS_VALUE;
1603         decoded_frame_tb   = ist->st->time_base;
1604     } else if (pkt->pts != AV_NOPTS_VALUE) {
1605         decoded_frame->pts = pkt->pts;
1606         pkt->pts           = AV_NOPTS_VALUE;
1607         decoded_frame_tb   = ist->st->time_base;
1608     }else {
1609         decoded_frame->pts = ist->dts;
1610         decoded_frame_tb   = AV_TIME_BASE_Q;
1611     }
1612     if (decoded_frame->pts != AV_NOPTS_VALUE)
1613         decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
1614                                               (AVRational){1, ist->st->codec->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
1615                                               (AVRational){1, ist->st->codec->sample_rate});
1616     for (i = 0; i < ist->nb_filters; i++) {
1617         if (i < ist->nb_filters - 1) {
1618             f = ist->filter_frame;
1619             err = av_frame_ref(f, decoded_frame);
1620             if (err < 0)
1621                 break;
1622         } else
1623             f = decoded_frame;
1624         err = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f,
1625                                      AV_BUFFERSRC_FLAG_PUSH);
1626         if (err == AVERROR_EOF)
1627             err = 0; /* ignore */
1628         if (err < 0)
1629             break;
1630     }
1631     decoded_frame->pts = AV_NOPTS_VALUE;
1632
1633     av_frame_unref(ist->filter_frame);
1634     av_frame_unref(decoded_frame);
1635     return err < 0 ? err : ret;
1636 }
1637
1638 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1639 {
1640     AVFrame *decoded_frame, *f;
1641     void *buffer_to_free = NULL;
1642     int i, ret = 0, err = 0, resample_changed;
1643     int64_t best_effort_timestamp;
1644     AVRational *frame_sample_aspect;
1645
1646     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1647         return AVERROR(ENOMEM);
1648     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1649         return AVERROR(ENOMEM);
1650     decoded_frame = ist->decoded_frame;
1651     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1652
1653     update_benchmark(NULL);
1654     ret = avcodec_decode_video2(ist->st->codec,
1655                                 decoded_frame, got_output, pkt);
1656     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1657
1658     if (*got_output || ret<0 || pkt->size)
1659         decode_error_stat[ret<0] ++;
1660
1661     if (!*got_output || ret < 0) {
1662         if (!pkt->size) {
1663             for (i = 0; i < ist->nb_filters; i++)
1664 #if 1
1665                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1666 #else
1667                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1668 #endif
1669         }
1670         return ret;
1671     }
1672
1673     if(ist->top_field_first>=0)
1674         decoded_frame->top_field_first = ist->top_field_first;
1675
1676     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1677     if(best_effort_timestamp != AV_NOPTS_VALUE)
1678         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1679
1680     if (debug_ts) {
1681         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1682                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1683                 ist->st->index, av_ts2str(decoded_frame->pts),
1684                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1685                 best_effort_timestamp,
1686                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1687                 decoded_frame->key_frame, decoded_frame->pict_type);
1688     }
1689
1690     pkt->size = 0;
1691
1692     if (ist->st->sample_aspect_ratio.num)
1693         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1694
1695     resample_changed = ist->resample_width   != decoded_frame->width  ||
1696                        ist->resample_height  != decoded_frame->height ||
1697                        ist->resample_pix_fmt != decoded_frame->format;
1698     if (resample_changed) {
1699         av_log(NULL, AV_LOG_INFO,
1700                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1701                ist->file_index, ist->st->index,
1702                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1703                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1704
1705         ist->resample_width   = decoded_frame->width;
1706         ist->resample_height  = decoded_frame->height;
1707         ist->resample_pix_fmt = decoded_frame->format;
1708
1709         for (i = 0; i < nb_filtergraphs; i++) {
1710             if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
1711                 configure_filtergraph(filtergraphs[i]) < 0) {
1712                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1713                 exit(1);
1714             }
1715         }
1716     }
1717
1718     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1719     for (i = 0; i < ist->nb_filters; i++) {
1720         if (!frame_sample_aspect->num)
1721             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1722
1723         if (i < ist->nb_filters - 1) {
1724             f = ist->filter_frame;
1725             err = av_frame_ref(f, decoded_frame);
1726             if (err < 0)
1727                 break;
1728         } else
1729             f = decoded_frame;
1730         ret = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f, AV_BUFFERSRC_FLAG_PUSH);
1731         if (ret == AVERROR_EOF) {
1732             ret = 0; /* ignore */
1733         } else if (ret < 0) {
1734             av_log(NULL, AV_LOG_FATAL,
1735                    "Failed to inject frame into filter network: %s\n", av_err2str(ret));
1736             exit(1);
1737         }
1738     }
1739
1740     av_frame_unref(ist->filter_frame);
1741     av_frame_unref(decoded_frame);
1742     av_free(buffer_to_free);
1743     return err < 0 ? err : ret;
1744 }
1745
1746 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1747 {
1748     AVSubtitle subtitle;
1749     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1750                                           &subtitle, got_output, pkt);
1751
1752     if (*got_output || ret<0 || pkt->size)
1753         decode_error_stat[ret<0] ++;
1754
1755     if (ret < 0 || !*got_output) {
1756         if (!pkt->size)
1757             sub2video_flush(ist);
1758         return ret;
1759     }
1760
1761     if (ist->fix_sub_duration) {
1762         if (ist->prev_sub.got_output) {
1763             int end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1764                                  1000, AV_TIME_BASE);
1765             if (end < ist->prev_sub.subtitle.end_display_time) {
1766                 av_log(ist->st->codec, AV_LOG_DEBUG,
1767                        "Subtitle duration reduced from %d to %d\n",
1768                        ist->prev_sub.subtitle.end_display_time, end);
1769                 ist->prev_sub.subtitle.end_display_time = end;
1770             }
1771         }
1772         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1773         FFSWAP(int,        ret,         ist->prev_sub.ret);
1774         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1775     }
1776
1777     sub2video_update(ist, &subtitle);
1778
1779     if (!*got_output || !subtitle.num_rects)
1780         return ret;
1781
1782     for (i = 0; i < nb_output_streams; i++) {
1783         OutputStream *ost = output_streams[i];
1784
1785         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1786             continue;
1787
1788         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
1789     }
1790
1791     avsubtitle_free(&subtitle);
1792     return ret;
1793 }
1794
1795 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1796 static int output_packet(InputStream *ist, const AVPacket *pkt)
1797 {
1798     int ret = 0, i;
1799     int got_output = 0;
1800
1801     AVPacket avpkt;
1802     if (!ist->saw_first_ts) {
1803         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;
1804         ist->pts = 0;
1805         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1806             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1807             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1808         }
1809         ist->saw_first_ts = 1;
1810     }
1811
1812     if (ist->next_dts == AV_NOPTS_VALUE)
1813         ist->next_dts = ist->dts;
1814     if (ist->next_pts == AV_NOPTS_VALUE)
1815         ist->next_pts = ist->pts;
1816
1817     if (pkt == NULL) {
1818         /* EOF handling */
1819         av_init_packet(&avpkt);
1820         avpkt.data = NULL;
1821         avpkt.size = 0;
1822         goto handle_eof;
1823     } else {
1824         avpkt = *pkt;
1825     }
1826
1827     if (pkt->dts != AV_NOPTS_VALUE) {
1828         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1829         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1830             ist->next_pts = ist->pts = ist->dts;
1831     }
1832
1833     // while we have more to decode or while the decoder did output something on EOF
1834     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1835         int duration;
1836     handle_eof:
1837
1838         ist->pts = ist->next_pts;
1839         ist->dts = ist->next_dts;
1840
1841         if (avpkt.size && avpkt.size != pkt->size) {
1842             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1843                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1844             ist->showed_multi_packet_warning = 1;
1845         }
1846
1847         switch (ist->st->codec->codec_type) {
1848         case AVMEDIA_TYPE_AUDIO:
1849             ret = decode_audio    (ist, &avpkt, &got_output);
1850             break;
1851         case AVMEDIA_TYPE_VIDEO:
1852             ret = decode_video    (ist, &avpkt, &got_output);
1853             if (avpkt.duration) {
1854                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1855             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1856                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1857                 duration = ((int64_t)AV_TIME_BASE *
1858                                 ist->st->codec->time_base.num * ticks) /
1859                                 ist->st->codec->time_base.den;
1860             } else
1861                 duration = 0;
1862
1863             if(ist->dts != AV_NOPTS_VALUE && duration) {
1864                 ist->next_dts += duration;
1865             }else
1866                 ist->next_dts = AV_NOPTS_VALUE;
1867
1868             if (got_output)
1869                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1870             break;
1871         case AVMEDIA_TYPE_SUBTITLE:
1872             ret = transcode_subtitles(ist, &avpkt, &got_output);
1873             break;
1874         default:
1875             return -1;
1876         }
1877
1878         if (ret < 0)
1879             return ret;
1880
1881         avpkt.dts=
1882         avpkt.pts= AV_NOPTS_VALUE;
1883
1884         // touch data and size only if not EOF
1885         if (pkt) {
1886             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1887                 ret = avpkt.size;
1888             avpkt.data += ret;
1889             avpkt.size -= ret;
1890         }
1891         if (!got_output) {
1892             continue;
1893         }
1894     }
1895
1896     /* handle stream copy */
1897     if (!ist->decoding_needed) {
1898         ist->dts = ist->next_dts;
1899         switch (ist->st->codec->codec_type) {
1900         case AVMEDIA_TYPE_AUDIO:
1901             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1902                              ist->st->codec->sample_rate;
1903             break;
1904         case AVMEDIA_TYPE_VIDEO:
1905             if (ist->framerate.num) {
1906                 // TODO: Remove work-around for c99-to-c89 issue 7
1907                 AVRational time_base_q = AV_TIME_BASE_Q;
1908                 int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate));
1909                 ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q);
1910             } else if (pkt->duration) {
1911                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1912             } else if(ist->st->codec->time_base.num != 0) {
1913                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1914                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1915                                   ist->st->codec->time_base.num * ticks) /
1916                                   ist->st->codec->time_base.den;
1917             }
1918             break;
1919         }
1920         ist->pts = ist->dts;
1921         ist->next_pts = ist->next_dts;
1922     }
1923     for (i = 0; pkt && i < nb_output_streams; i++) {
1924         OutputStream *ost = output_streams[i];
1925
1926         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1927             continue;
1928
1929         do_streamcopy(ist, ost, pkt);
1930     }
1931
1932     return 0;
1933 }
1934
1935 static void print_sdp(void)
1936 {
1937     char sdp[16384];
1938     int i;
1939     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1940
1941     if (!avc)
1942         exit(1);
1943     for (i = 0; i < nb_output_files; i++)
1944         avc[i] = output_files[i]->ctx;
1945
1946     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1947     printf("SDP:\n%s\n", sdp);
1948     fflush(stdout);
1949     av_freep(&avc);
1950 }
1951
1952 static int init_input_stream(int ist_index, char *error, int error_len)
1953 {
1954     int ret;
1955     InputStream *ist = input_streams[ist_index];
1956
1957     if (ist->decoding_needed) {
1958         AVCodec *codec = ist->dec;
1959         if (!codec) {
1960             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1961                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1962             return AVERROR(EINVAL);
1963         }
1964
1965         av_opt_set_int(ist->st->codec, "refcounted_frames", 1, 0);
1966
1967         if (!av_dict_get(ist->opts, "threads", NULL, 0))
1968             av_dict_set(&ist->opts, "threads", "auto", 0);
1969         if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
1970             if (ret == AVERROR_EXPERIMENTAL)
1971                 abort_codec_experimental(codec, 0);
1972             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1973                     ist->file_index, ist->st->index);
1974             return ret;
1975         }
1976         assert_avoptions(ist->opts);
1977     }
1978
1979     ist->next_pts = AV_NOPTS_VALUE;
1980     ist->next_dts = AV_NOPTS_VALUE;
1981     ist->is_start = 1;
1982
1983     return 0;
1984 }
1985
1986 static InputStream *get_input_stream(OutputStream *ost)
1987 {
1988     if (ost->source_index >= 0)
1989         return input_streams[ost->source_index];
1990     return NULL;
1991 }
1992
1993 static int compare_int64(const void *a, const void *b)
1994 {
1995     int64_t va = *(int64_t *)a, vb = *(int64_t *)b;
1996     return va < vb ? -1 : va > vb ? +1 : 0;
1997 }
1998
1999 static void parse_forced_key_frames(char *kf, OutputStream *ost,
2000                                     AVCodecContext *avctx)
2001 {
2002     char *p;
2003     int n = 1, i, size, index = 0;
2004     int64_t t, *pts;
2005
2006     for (p = kf; *p; p++)
2007         if (*p == ',')
2008             n++;
2009     size = n;
2010     pts = av_malloc(sizeof(*pts) * size);
2011     if (!pts) {
2012         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
2013         exit(1);
2014     }
2015
2016     p = kf;
2017     for (i = 0; i < n; i++) {
2018         char *next = strchr(p, ',');
2019
2020         if (next)
2021             *next++ = 0;
2022
2023         if (!memcmp(p, "chapters", 8)) {
2024
2025             AVFormatContext *avf = output_files[ost->file_index]->ctx;
2026             int j;
2027
2028             if (avf->nb_chapters > INT_MAX - size ||
2029                 !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
2030                                      sizeof(*pts)))) {
2031                 av_log(NULL, AV_LOG_FATAL,
2032                        "Could not allocate forced key frames array.\n");
2033                 exit(1);
2034             }
2035             t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
2036             t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2037
2038             for (j = 0; j < avf->nb_chapters; j++) {
2039                 AVChapter *c = avf->chapters[j];
2040                 av_assert1(index < size);
2041                 pts[index++] = av_rescale_q(c->start, c->time_base,
2042                                             avctx->time_base) + t;
2043             }
2044
2045         } else {
2046
2047             t = parse_time_or_die("force_key_frames", p, 1);
2048             av_assert1(index < size);
2049             pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2050
2051         }
2052
2053         p = next;
2054     }
2055
2056     av_assert0(index == size);
2057     qsort(pts, size, sizeof(*pts), compare_int64);
2058     ost->forced_kf_count = size;
2059     ost->forced_kf_pts   = pts;
2060 }
2061
2062 static void report_new_stream(int input_index, AVPacket *pkt)
2063 {
2064     InputFile *file = input_files[input_index];
2065     AVStream *st = file->ctx->streams[pkt->stream_index];
2066
2067     if (pkt->stream_index < file->nb_streams_warn)
2068         return;
2069     av_log(file->ctx, AV_LOG_WARNING,
2070            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
2071            av_get_media_type_string(st->codec->codec_type),
2072            input_index, pkt->stream_index,
2073            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
2074     file->nb_streams_warn = pkt->stream_index + 1;
2075 }
2076
2077 static int transcode_init(void)
2078 {
2079     int ret = 0, i, j, k;
2080     AVFormatContext *oc;
2081     AVCodecContext *codec;
2082     OutputStream *ost;
2083     InputStream *ist;
2084     char error[1024];
2085     int want_sdp = 1;
2086
2087     /* init framerate emulation */
2088     for (i = 0; i < nb_input_files; i++) {
2089         InputFile *ifile = input_files[i];
2090         if (ifile->rate_emu)
2091             for (j = 0; j < ifile->nb_streams; j++)
2092                 input_streams[j + ifile->ist_index]->start = av_gettime();
2093     }
2094
2095     /* output stream init */
2096     for (i = 0; i < nb_output_files; i++) {
2097         oc = output_files[i]->ctx;
2098         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2099             av_dump_format(oc, i, oc->filename, 1);
2100             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2101             return AVERROR(EINVAL);
2102         }
2103     }
2104
2105     /* init complex filtergraphs */
2106     for (i = 0; i < nb_filtergraphs; i++)
2107         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2108             return ret;
2109
2110     /* for each output stream, we compute the right encoding parameters */
2111     for (i = 0; i < nb_output_streams; i++) {
2112         AVCodecContext *icodec = NULL;
2113         ost = output_streams[i];
2114         oc  = output_files[ost->file_index]->ctx;
2115         ist = get_input_stream(ost);
2116
2117         if (ost->attachment_filename)
2118             continue;
2119
2120         codec  = ost->st->codec;
2121
2122         if (ist) {
2123             icodec = ist->st->codec;
2124
2125             ost->st->disposition          = ist->st->disposition;
2126             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2127             codec->chroma_sample_location = icodec->chroma_sample_location;
2128         }
2129
2130         if (ost->stream_copy) {
2131             AVRational sar;
2132             uint64_t extra_size;
2133
2134             av_assert0(ist && !ost->filter);
2135
2136             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2137
2138             if (extra_size > INT_MAX) {
2139                 return AVERROR(EINVAL);
2140             }
2141
2142             /* if stream_copy is selected, no need to decode or encode */
2143             codec->codec_id   = icodec->codec_id;
2144             codec->codec_type = icodec->codec_type;
2145
2146             if (!codec->codec_tag) {
2147                 unsigned int codec_tag;
2148                 if (!oc->oformat->codec_tag ||
2149                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2150                      !av_codec_get_tag2(oc->oformat->codec_tag, icodec->codec_id, &codec_tag))
2151                     codec->codec_tag = icodec->codec_tag;
2152             }
2153
2154             codec->bit_rate       = icodec->bit_rate;
2155             codec->rc_max_rate    = icodec->rc_max_rate;
2156             codec->rc_buffer_size = icodec->rc_buffer_size;
2157             codec->field_order    = icodec->field_order;
2158             codec->extradata      = av_mallocz(extra_size);
2159             if (!codec->extradata) {
2160                 return AVERROR(ENOMEM);
2161             }
2162             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2163             codec->extradata_size= icodec->extradata_size;
2164             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2165
2166             codec->time_base = ist->st->time_base;
2167             /*
2168              * Avi is a special case here because it supports variable fps but
2169              * having the fps and timebase differe significantly adds quite some
2170              * overhead
2171              */
2172             if(!strcmp(oc->oformat->name, "avi")) {
2173                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2174                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2175                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2176                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2177                      || copy_tb==2){
2178                     codec->time_base.num = ist->st->r_frame_rate.den;
2179                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2180                     codec->ticks_per_frame = 2;
2181                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2182                                  && av_q2d(ist->st->time_base) < 1.0/500
2183                     || copy_tb==0){
2184                     codec->time_base = icodec->time_base;
2185                     codec->time_base.num *= icodec->ticks_per_frame;
2186                     codec->time_base.den *= 2;
2187                     codec->ticks_per_frame = 2;
2188                 }
2189             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2190                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2191                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2192                       && strcmp(oc->oformat->name, "f4v")
2193             ) {
2194                 if(   copy_tb<0 && icodec->time_base.den
2195                                 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2196                                 && av_q2d(ist->st->time_base) < 1.0/500
2197                    || copy_tb==0){
2198                     codec->time_base = icodec->time_base;
2199                     codec->time_base.num *= icodec->ticks_per_frame;
2200                 }
2201             }
2202             if (   codec->codec_tag == AV_RL32("tmcd")
2203                 && icodec->time_base.num < icodec->time_base.den
2204                 && icodec->time_base.num > 0
2205                 && 121LL*icodec->time_base.num > icodec->time_base.den) {
2206                 codec->time_base = icodec->time_base;
2207             }
2208
2209             if (ist && !ost->frame_rate.num)
2210                 ost->frame_rate = ist->framerate;
2211             if(ost->frame_rate.num)
2212                 codec->time_base = av_inv_q(ost->frame_rate);
2213
2214             av_reduce(&codec->time_base.num, &codec->time_base.den,
2215                         codec->time_base.num, codec->time_base.den, INT_MAX);
2216
2217             switch (codec->codec_type) {
2218             case AVMEDIA_TYPE_AUDIO:
2219                 if (audio_volume != 256) {
2220                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2221                     exit(1);
2222                 }
2223                 codec->channel_layout     = icodec->channel_layout;
2224                 codec->sample_rate        = icodec->sample_rate;
2225                 codec->channels           = icodec->channels;
2226                 codec->frame_size         = icodec->frame_size;
2227                 codec->audio_service_type = icodec->audio_service_type;
2228                 codec->block_align        = icodec->block_align;
2229                 if((codec->block_align == 1 || codec->block_align == 1152 || codec->block_align == 576) && codec->codec_id == AV_CODEC_ID_MP3)
2230                     codec->block_align= 0;
2231                 if(codec->codec_id == AV_CODEC_ID_AC3)
2232                     codec->block_align= 0;
2233                 break;
2234             case AVMEDIA_TYPE_VIDEO:
2235                 codec->pix_fmt            = icodec->pix_fmt;
2236                 codec->width              = icodec->width;
2237                 codec->height             = icodec->height;
2238                 codec->has_b_frames       = icodec->has_b_frames;
2239                 if (ost->frame_aspect_ratio.num) { // overridden by the -aspect cli option
2240                     sar =
2241                         av_mul_q(ost->frame_aspect_ratio,
2242                                  (AVRational){ codec->height, codec->width });
2243                     av_log(NULL, AV_LOG_WARNING, "Overriding aspect ratio "
2244                            "with stream copy may produce invalid files\n");
2245                 }
2246                 else if (ist->st->sample_aspect_ratio.num)
2247                     sar = ist->st->sample_aspect_ratio;
2248                 else
2249                     sar = icodec->sample_aspect_ratio;
2250                 ost->st->sample_aspect_ratio = codec->sample_aspect_ratio = sar;
2251                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2252                 break;
2253             case AVMEDIA_TYPE_SUBTITLE:
2254                 codec->width  = icodec->width;
2255                 codec->height = icodec->height;
2256                 break;
2257             case AVMEDIA_TYPE_DATA:
2258             case AVMEDIA_TYPE_ATTACHMENT:
2259                 break;
2260             default:
2261                 abort();
2262             }
2263         } else {
2264             if (!ost->enc)
2265                 ost->enc = avcodec_find_encoder(codec->codec_id);
2266             if (!ost->enc) {
2267                 /* should only happen when a default codec is not present. */
2268                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2269                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2270                 ret = AVERROR(EINVAL);
2271                 goto dump_format;
2272             }
2273
2274             if (ist)
2275                 ist->decoding_needed++;
2276             ost->encoding_needed = 1;
2277
2278             if (!ost->filter &&
2279                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2280                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2281                     FilterGraph *fg;
2282                     fg = init_simple_filtergraph(ist, ost);
2283                     if (configure_filtergraph(fg)) {
2284                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2285                         exit(1);
2286                     }
2287             }
2288
2289             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2290                 if (ost->filter && !ost->frame_rate.num)
2291                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2292                 if (ist && !ost->frame_rate.num)
2293                     ost->frame_rate = ist->framerate;
2294                 if (ist && !ost->frame_rate.num)
2295                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2296 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2297                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2298                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2299                     ost->frame_rate = ost->enc->supported_framerates[idx];
2300                 }
2301             }
2302
2303             switch (codec->codec_type) {
2304             case AVMEDIA_TYPE_AUDIO:
2305                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2306                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2307                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2308                 codec->channels       = avfilter_link_get_channels(ost->filter->filter->inputs[0]);
2309                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2310                 break;
2311             case AVMEDIA_TYPE_VIDEO:
2312                 codec->time_base = av_inv_q(ost->frame_rate);
2313                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2314                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2315                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2316                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2317                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2318                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2319                 }
2320                 for (j = 0; j < ost->forced_kf_count; j++)
2321                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2322                                                          AV_TIME_BASE_Q,
2323                                                          codec->time_base);
2324
2325                 codec->width  = ost->filter->filter->inputs[0]->w;
2326                 codec->height = ost->filter->filter->inputs[0]->h;
2327                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2328                     ost->frame_aspect_ratio.num ? // overridden by the -aspect cli option
2329                     av_mul_q(ost->frame_aspect_ratio, (AVRational){ codec->height, codec->width }) :
2330                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2331                 if (!strncmp(ost->enc->name, "libx264", 7) &&
2332                     codec->pix_fmt == AV_PIX_FMT_NONE &&
2333                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2334                     av_log(NULL, AV_LOG_INFO,
2335                            "No pixel format specified, %s for H.264 encoding chosen.\n"
2336                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2337                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2338                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2339
2340                 if (!icodec ||
2341                     codec->width   != icodec->width  ||
2342                     codec->height  != icodec->height ||
2343                     codec->pix_fmt != icodec->pix_fmt) {
2344                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2345                 }
2346
2347                 if (ost->forced_keyframes) {
2348                     if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
2349                         ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
2350                                             forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
2351                         if (ret < 0) {
2352                             av_log(NULL, AV_LOG_ERROR,
2353                                    "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
2354                             return ret;
2355                         }
2356                         ost->forced_keyframes_expr_const_values[FKF_N] = 0;
2357                         ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
2358                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
2359                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;
2360                     } else {
2361                         parse_forced_key_frames(ost->forced_keyframes, ost, ost->st->codec);
2362                     }
2363                 }
2364                 break;
2365             case AVMEDIA_TYPE_SUBTITLE:
2366                 codec->time_base = (AVRational){1, 1000};
2367                 if (!codec->width) {
2368                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2369                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2370                 }
2371                 break;
2372             default:
2373                 abort();
2374                 break;
2375             }
2376             /* two pass mode */
2377             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2378                 char logfilename[1024];
2379                 FILE *f;
2380
2381                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2382                          ost->logfile_prefix ? ost->logfile_prefix :
2383                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2384                          i);
2385                 if (!strcmp(ost->enc->name, "libx264")) {
2386                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2387                 } else {
2388                     if (codec->flags & CODEC_FLAG_PASS2) {
2389                         char  *logbuffer;
2390                         size_t logbuffer_size;
2391                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2392                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2393                                    logfilename);
2394                             exit(1);
2395                         }
2396                         codec->stats_in = logbuffer;
2397                     }
2398                     if (codec->flags & CODEC_FLAG_PASS1) {
2399                         f = fopen(logfilename, "wb");
2400                         if (!f) {
2401                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2402                                 logfilename, strerror(errno));
2403                             exit(1);
2404                         }
2405                         ost->logfile = f;
2406                     }
2407                 }
2408             }
2409         }
2410     }
2411
2412     /* open each encoder */
2413     for (i = 0; i < nb_output_streams; i++) {
2414         ost = output_streams[i];
2415         if (ost->encoding_needed) {
2416             AVCodec      *codec = ost->enc;
2417             AVCodecContext *dec = NULL;
2418
2419             if ((ist = get_input_stream(ost)))
2420                 dec = ist->st->codec;
2421             if (dec && dec->subtitle_header) {
2422                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2423                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2424                 if (!ost->st->codec->subtitle_header) {
2425                     ret = AVERROR(ENOMEM);
2426                     goto dump_format;
2427                 }
2428                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2429                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2430             }
2431             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2432                 av_dict_set(&ost->opts, "threads", "auto", 0);
2433             if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
2434                 if (ret == AVERROR_EXPERIMENTAL)
2435                     abort_codec_experimental(codec, 1);
2436                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2437                         ost->file_index, ost->index);
2438                 goto dump_format;
2439             }
2440             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2441                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2442                 av_buffersink_set_frame_size(ost->filter->filter,
2443                                              ost->st->codec->frame_size);
2444             assert_avoptions(ost->opts);
2445             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2446                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2447                                              " It takes bits/s as argument, not kbits/s\n");
2448             extra_size += ost->st->codec->extradata_size;
2449
2450             if (ost->st->codec->me_threshold)
2451                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
2452         } else {
2453             av_opt_set_dict(ost->st->codec, &ost->opts);
2454         }
2455     }
2456
2457     /* init input streams */
2458     for (i = 0; i < nb_input_streams; i++)
2459         if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
2460             for (i = 0; i < nb_output_streams; i++) {
2461                 ost = output_streams[i];
2462                 avcodec_close(ost->st->codec);
2463             }
2464             goto dump_format;
2465         }
2466
2467     /* discard unused programs */
2468     for (i = 0; i < nb_input_files; i++) {
2469         InputFile *ifile = input_files[i];
2470         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2471             AVProgram *p = ifile->ctx->programs[j];
2472             int discard  = AVDISCARD_ALL;
2473
2474             for (k = 0; k < p->nb_stream_indexes; k++)
2475                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2476                     discard = AVDISCARD_DEFAULT;
2477                     break;
2478                 }
2479             p->discard = discard;
2480         }
2481     }
2482
2483     /* open files and write file headers */
2484     for (i = 0; i < nb_output_files; i++) {
2485         oc = output_files[i]->ctx;
2486         oc->interrupt_callback = int_cb;
2487         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2488             char errbuf[128];
2489             const char *errbuf_ptr = errbuf;
2490             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
2491                 errbuf_ptr = strerror(AVUNERROR(ret));
2492             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
2493             ret = AVERROR(EINVAL);
2494             goto dump_format;
2495         }
2496 //         assert_avoptions(output_files[i]->opts);
2497         if (strcmp(oc->oformat->name, "rtp")) {
2498             want_sdp = 0;
2499         }
2500     }
2501
2502  dump_format:
2503     /* dump the file output parameters - cannot be done before in case
2504        of stream copy */
2505     for (i = 0; i < nb_output_files; i++) {
2506         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2507     }
2508
2509     /* dump the stream mapping */
2510     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2511     for (i = 0; i < nb_input_streams; i++) {
2512         ist = input_streams[i];
2513
2514         for (j = 0; j < ist->nb_filters; j++) {
2515             if (ist->filters[j]->graph->graph_desc) {
2516                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2517                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2518                        ist->filters[j]->name);
2519                 if (nb_filtergraphs > 1)
2520                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2521                 av_log(NULL, AV_LOG_INFO, "\n");
2522             }
2523         }
2524     }
2525
2526     for (i = 0; i < nb_output_streams; i++) {
2527         ost = output_streams[i];
2528
2529         if (ost->attachment_filename) {
2530             /* an attached file */
2531             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2532                    ost->attachment_filename, ost->file_index, ost->index);
2533             continue;
2534         }
2535
2536         if (ost->filter && ost->filter->graph->graph_desc) {
2537             /* output from a complex graph */
2538             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2539             if (nb_filtergraphs > 1)
2540                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2541
2542             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2543                    ost->index, ost->enc ? ost->enc->name : "?");
2544             continue;
2545         }
2546
2547         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2548                input_streams[ost->source_index]->file_index,
2549                input_streams[ost->source_index]->st->index,
2550                ost->file_index,
2551                ost->index);
2552         if (ost->sync_ist != input_streams[ost->source_index])
2553             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2554                    ost->sync_ist->file_index,
2555                    ost->sync_ist->st->index);
2556         if (ost->stream_copy)
2557             av_log(NULL, AV_LOG_INFO, " (copy)");
2558         else
2559             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2560                    input_streams[ost->source_index]->dec->name : "?",
2561                    ost->enc ? ost->enc->name : "?");
2562         av_log(NULL, AV_LOG_INFO, "\n");
2563     }
2564
2565     if (ret) {
2566         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2567         return ret;
2568     }
2569
2570     if (want_sdp) {
2571         print_sdp();
2572     }
2573
2574     return 0;
2575 }
2576
2577 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2578 static int need_output(void)
2579 {
2580     int i;
2581
2582     for (i = 0; i < nb_output_streams; i++) {
2583         OutputStream *ost    = output_streams[i];
2584         OutputFile *of       = output_files[ost->file_index];
2585         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2586
2587         if (ost->finished ||
2588             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2589             continue;
2590         if (ost->frame_number >= ost->max_frames) {
2591             int j;
2592             for (j = 0; j < of->ctx->nb_streams; j++)
2593                 close_output_stream(output_streams[of->ost_index + j]);
2594             continue;
2595         }
2596
2597         return 1;
2598     }
2599
2600     return 0;
2601 }
2602
2603 /**
2604  * Select the output stream to process.
2605  *
2606  * @return  selected output stream, or NULL if none available
2607  */
2608 static OutputStream *choose_output(void)
2609 {
2610     int i;
2611     int64_t opts_min = INT64_MAX;
2612     OutputStream *ost_min = NULL;
2613
2614     for (i = 0; i < nb_output_streams; i++) {
2615         OutputStream *ost = output_streams[i];
2616         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2617                                     AV_TIME_BASE_Q);
2618         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2619             opts_min = opts;
2620             ost_min  = ost;
2621         }
2622     }
2623     return ost_min;
2624 }
2625
2626 static int check_keyboard_interaction(int64_t cur_time)
2627 {
2628     int i, ret, key;
2629     static int64_t last_time;
2630     if (received_nb_signals)
2631         return AVERROR_EXIT;
2632     /* read_key() returns 0 on EOF */
2633     if(cur_time - last_time >= 100000 && !run_as_daemon){
2634         key =  read_key();
2635         last_time = cur_time;
2636     }else
2637         key = -1;
2638     if (key == 'q')
2639         return AVERROR_EXIT;
2640     if (key == '+') av_log_set_level(av_log_get_level()+10);
2641     if (key == '-') av_log_set_level(av_log_get_level()-10);
2642     if (key == 's') qp_hist     ^= 1;
2643     if (key == 'h'){
2644         if (do_hex_dump){
2645             do_hex_dump = do_pkt_dump = 0;
2646         } else if(do_pkt_dump){
2647             do_hex_dump = 1;
2648         } else
2649             do_pkt_dump = 1;
2650         av_log_set_level(AV_LOG_DEBUG);
2651     }
2652     if (key == 'c' || key == 'C'){
2653         char buf[4096], target[64], command[256], arg[256] = {0};
2654         double time;
2655         int k, n = 0;
2656         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2657         i = 0;
2658         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2659             if (k > 0)
2660                 buf[i++] = k;
2661         buf[i] = 0;
2662         if (k > 0 &&
2663             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2664             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2665                    target, time, command, arg);
2666             for (i = 0; i < nb_filtergraphs; i++) {
2667                 FilterGraph *fg = filtergraphs[i];
2668                 if (fg->graph) {
2669                     if (time < 0) {
2670                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2671                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2672                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2673                     } else {
2674                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2675                     }
2676                 }
2677             }
2678         } else {
2679             av_log(NULL, AV_LOG_ERROR,
2680                    "Parse error, at least 3 arguments were expected, "
2681                    "only %d given in string '%s'\n", n, buf);
2682         }
2683     }
2684     if (key == 'd' || key == 'D'){
2685         int debug=0;
2686         if(key == 'D') {
2687             debug = input_streams[0]->st->codec->debug<<1;
2688             if(!debug) debug = 1;
2689             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2690                 debug += debug;
2691         }else
2692             if(scanf("%d", &debug)!=1)
2693                 fprintf(stderr,"error parsing debug value\n");
2694         for(i=0;i<nb_input_streams;i++) {
2695             input_streams[i]->st->codec->debug = debug;
2696         }
2697         for(i=0;i<nb_output_streams;i++) {
2698             OutputStream *ost = output_streams[i];
2699             ost->st->codec->debug = debug;
2700         }
2701         if(debug) av_log_set_level(AV_LOG_DEBUG);
2702         fprintf(stderr,"debug=%d\n", debug);
2703     }
2704     if (key == '?'){
2705         fprintf(stderr, "key    function\n"
2706                         "?      show this help\n"
2707                         "+      increase verbosity\n"
2708                         "-      decrease verbosity\n"
2709                         "c      Send command to filtergraph\n"
2710                         "D      cycle through available debug modes\n"
2711                         "h      dump packets/hex press to cycle through the 3 states\n"
2712                         "q      quit\n"
2713                         "s      Show QP histogram\n"
2714         );
2715     }
2716     return 0;
2717 }
2718
2719 #if HAVE_PTHREADS
2720 static void *input_thread(void *arg)
2721 {
2722     InputFile *f = arg;
2723     int ret = 0;
2724
2725     while (!transcoding_finished && ret >= 0) {
2726         AVPacket pkt;
2727         ret = av_read_frame(f->ctx, &pkt);
2728
2729         if (ret == AVERROR(EAGAIN)) {
2730             av_usleep(10000);
2731             ret = 0;
2732             continue;
2733         } else if (ret < 0)
2734             break;
2735
2736         pthread_mutex_lock(&f->fifo_lock);
2737         while (!av_fifo_space(f->fifo))
2738             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2739
2740         av_dup_packet(&pkt);
2741         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2742
2743         pthread_mutex_unlock(&f->fifo_lock);
2744     }
2745
2746     f->finished = 1;
2747     return NULL;
2748 }
2749
2750 static void free_input_threads(void)
2751 {
2752     int i;
2753
2754     if (nb_input_files == 1)
2755         return;
2756
2757     transcoding_finished = 1;
2758
2759     for (i = 0; i < nb_input_files; i++) {
2760         InputFile *f = input_files[i];
2761         AVPacket pkt;
2762
2763         if (!f->fifo || f->joined)
2764             continue;
2765
2766         pthread_mutex_lock(&f->fifo_lock);
2767         while (av_fifo_size(f->fifo)) {
2768             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2769             av_free_packet(&pkt);
2770         }
2771         pthread_cond_signal(&f->fifo_cond);
2772         pthread_mutex_unlock(&f->fifo_lock);
2773
2774         pthread_join(f->thread, NULL);
2775         f->joined = 1;
2776
2777         while (av_fifo_size(f->fifo)) {
2778             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2779             av_free_packet(&pkt);
2780         }
2781         av_fifo_free(f->fifo);
2782     }
2783 }
2784
2785 static int init_input_threads(void)
2786 {
2787     int i, ret;
2788
2789     if (nb_input_files == 1)
2790         return 0;
2791
2792     for (i = 0; i < nb_input_files; i++) {
2793         InputFile *f = input_files[i];
2794
2795         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2796             return AVERROR(ENOMEM);
2797
2798         pthread_mutex_init(&f->fifo_lock, NULL);
2799         pthread_cond_init (&f->fifo_cond, NULL);
2800
2801         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2802             return AVERROR(ret);
2803     }
2804     return 0;
2805 }
2806
2807 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2808 {
2809     int ret = 0;
2810
2811     pthread_mutex_lock(&f->fifo_lock);
2812
2813     if (av_fifo_size(f->fifo)) {
2814         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2815         pthread_cond_signal(&f->fifo_cond);
2816     } else {
2817         if (f->finished)
2818             ret = AVERROR_EOF;
2819         else
2820             ret = AVERROR(EAGAIN);
2821     }
2822
2823     pthread_mutex_unlock(&f->fifo_lock);
2824
2825     return ret;
2826 }
2827 #endif
2828
2829 static int get_input_packet(InputFile *f, AVPacket *pkt)
2830 {
2831     if (f->rate_emu) {
2832         int i;
2833         for (i = 0; i < f->nb_streams; i++) {
2834             InputStream *ist = input_streams[f->ist_index + i];
2835             int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
2836             int64_t now = av_gettime() - ist->start;
2837             if (pts > now)
2838                 return AVERROR(EAGAIN);
2839         }
2840     }
2841
2842 #if HAVE_PTHREADS
2843     if (nb_input_files > 1)
2844         return get_input_packet_mt(f, pkt);
2845 #endif
2846     return av_read_frame(f->ctx, pkt);
2847 }
2848
2849 static int got_eagain(void)
2850 {
2851     int i;
2852     for (i = 0; i < nb_output_streams; i++)
2853         if (output_streams[i]->unavailable)
2854             return 1;
2855     return 0;
2856 }
2857
2858 static void reset_eagain(void)
2859 {
2860     int i;
2861     for (i = 0; i < nb_input_files; i++)
2862         input_files[i]->eagain = 0;
2863     for (i = 0; i < nb_output_streams; i++)
2864         output_streams[i]->unavailable = 0;
2865 }
2866
2867 /*
2868  * Return
2869  * - 0 -- one packet was read and processed
2870  * - AVERROR(EAGAIN) -- no packets were available for selected file,
2871  *   this function should be called again
2872  * - AVERROR_EOF -- this function should not be called again
2873  */
2874 static int process_input(int file_index)
2875 {
2876     InputFile *ifile = input_files[file_index];
2877     AVFormatContext *is;
2878     InputStream *ist;
2879     AVPacket pkt;
2880     int ret, i, j;
2881
2882     is  = ifile->ctx;
2883     ret = get_input_packet(ifile, &pkt);
2884
2885     if (ret == AVERROR(EAGAIN)) {
2886         ifile->eagain = 1;
2887         return ret;
2888     }
2889     if (ret < 0) {
2890         if (ret != AVERROR_EOF) {
2891             print_error(is->filename, ret);
2892             if (exit_on_error)
2893                 exit(1);
2894         }
2895         ifile->eof_reached = 1;
2896
2897         for (i = 0; i < ifile->nb_streams; i++) {
2898             ist = input_streams[ifile->ist_index + i];
2899             if (ist->decoding_needed)
2900                 output_packet(ist, NULL);
2901
2902             /* mark all outputs that don't go through lavfi as finished */
2903             for (j = 0; j < nb_output_streams; j++) {
2904                 OutputStream *ost = output_streams[j];
2905
2906                 if (ost->source_index == ifile->ist_index + i &&
2907                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2908                     close_output_stream(ost);
2909             }
2910         }
2911
2912         return AVERROR(EAGAIN);
2913     }
2914
2915     reset_eagain();
2916
2917     if (do_pkt_dump) {
2918         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2919                          is->streams[pkt.stream_index]);
2920     }
2921     /* the following test is needed in case new streams appear
2922        dynamically in stream : we ignore them */
2923     if (pkt.stream_index >= ifile->nb_streams) {
2924         report_new_stream(file_index, &pkt);
2925         goto discard_packet;
2926     }
2927
2928     ist = input_streams[ifile->ist_index + pkt.stream_index];
2929     if (ist->discard)
2930         goto discard_packet;
2931
2932     if (debug_ts) {
2933         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
2934                "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",
2935                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2936                av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
2937                av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
2938                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2939                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2940                av_ts2str(input_files[ist->file_index]->ts_offset),
2941                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
2942     }
2943
2944     if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
2945         int64_t stime, stime2;
2946         // Correcting starttime based on the enabled streams
2947         // 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.
2948         //       so we instead do it here as part of discontinuity handling
2949         if (   ist->next_dts == AV_NOPTS_VALUE
2950             && ifile->ts_offset == -is->start_time
2951             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2952             int64_t new_start_time = INT64_MAX;
2953             for (i=0; i<is->nb_streams; i++) {
2954                 AVStream *st = is->streams[i];
2955                 if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
2956                     continue;
2957                 new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
2958             }
2959             if (new_start_time > is->start_time) {
2960                 av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
2961                 ifile->ts_offset = -new_start_time;
2962             }
2963         }
2964
2965         stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
2966         stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
2967         ist->wrap_correction_done = 1;
2968
2969         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2970             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
2971             ist->wrap_correction_done = 0;
2972         }
2973         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2974             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
2975             ist->wrap_correction_done = 0;
2976         }
2977     }
2978
2979     if (pkt.dts != AV_NOPTS_VALUE)
2980         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2981     if (pkt.pts != AV_NOPTS_VALUE)
2982         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2983
2984     if (pkt.pts != AV_NOPTS_VALUE)
2985         pkt.pts *= ist->ts_scale;
2986     if (pkt.dts != AV_NOPTS_VALUE)
2987         pkt.dts *= ist->ts_scale;
2988
2989     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts == AV_NOPTS_VALUE && !copy_ts
2990         && (is->iformat->flags & AVFMT_TS_DISCONT) && ifile->last_ts != AV_NOPTS_VALUE) {
2991         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2992         int64_t delta   = pkt_dts - ifile->last_ts;
2993         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2994             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2995                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)){
2996             ifile->ts_offset -= delta;
2997             av_log(NULL, AV_LOG_DEBUG,
2998                    "Inter stream timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2999                    delta, ifile->ts_offset);
3000             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3001             if (pkt.pts != AV_NOPTS_VALUE)
3002                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3003         }
3004     }
3005
3006     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
3007         !copy_ts) {
3008         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3009         int64_t delta   = pkt_dts - ist->next_dts;
3010         if (is->iformat->flags & AVFMT_TS_DISCONT) {
3011         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3012             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3013                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3014             pkt_dts+1<ist->pts){
3015             ifile->ts_offset -= delta;
3016             av_log(NULL, AV_LOG_DEBUG,
3017                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3018                    delta, ifile->ts_offset);
3019             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3020             if (pkt.pts != AV_NOPTS_VALUE)
3021                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3022         }
3023         } else {
3024             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3025                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
3026                ) {
3027                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3028                 pkt.dts = AV_NOPTS_VALUE;
3029             }
3030             if (pkt.pts != AV_NOPTS_VALUE){
3031                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3032                 delta   = pkt_pts - ist->next_dts;
3033                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3034                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
3035                    ) {
3036                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3037                     pkt.pts = AV_NOPTS_VALUE;
3038                 }
3039             }
3040         }
3041     }
3042
3043     if (pkt.dts != AV_NOPTS_VALUE)
3044         ifile->last_ts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3045
3046     if (debug_ts) {
3047         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",
3048                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
3049                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3050                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3051                av_ts2str(input_files[ist->file_index]->ts_offset),
3052                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3053     }
3054
3055     sub2video_heartbeat(ist, pkt.pts);
3056
3057     ret = output_packet(ist, &pkt);
3058     if (ret < 0) {
3059         char buf[128];
3060         av_strerror(ret, buf, sizeof(buf));
3061         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
3062                 ist->file_index, ist->st->index, buf);
3063         if (exit_on_error)
3064             exit(1);
3065     }
3066
3067 discard_packet:
3068     av_free_packet(&pkt);
3069
3070     return 0;
3071 }
3072
3073 /**
3074  * Perform a step of transcoding for the specified filter graph.
3075  *
3076  * @param[in]  graph     filter graph to consider
3077  * @param[out] best_ist  input stream where a frame would allow to continue
3078  * @return  0 for success, <0 for error
3079  */
3080 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
3081 {
3082     int i, ret;
3083     int nb_requests, nb_requests_max = 0;
3084     InputFilter *ifilter;
3085     InputStream *ist;
3086
3087     *best_ist = NULL;
3088     ret = avfilter_graph_request_oldest(graph->graph);
3089     if (ret >= 0)
3090         return reap_filters();
3091
3092     if (ret == AVERROR_EOF) {
3093         ret = reap_filters();
3094         for (i = 0; i < graph->nb_outputs; i++)
3095             close_output_stream(graph->outputs[i]->ost);
3096         return ret;
3097     }
3098     if (ret != AVERROR(EAGAIN))
3099         return ret;
3100
3101     for (i = 0; i < graph->nb_inputs; i++) {
3102         ifilter = graph->inputs[i];
3103         ist = ifilter->ist;
3104         if (input_files[ist->file_index]->eagain ||
3105             input_files[ist->file_index]->eof_reached)
3106             continue;
3107         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
3108         if (nb_requests > nb_requests_max) {
3109             nb_requests_max = nb_requests;
3110             *best_ist = ist;
3111         }
3112     }
3113
3114     if (!*best_ist)
3115         for (i = 0; i < graph->nb_outputs; i++)
3116             graph->outputs[i]->ost->unavailable = 1;
3117
3118     return 0;
3119 }
3120
3121 /**
3122  * Run a single step of transcoding.
3123  *
3124  * @return  0 for success, <0 for error
3125  */
3126 static int transcode_step(void)
3127 {
3128     OutputStream *ost;
3129     InputStream  *ist;
3130     int ret;
3131
3132     ost = choose_output();
3133     if (!ost) {
3134         if (got_eagain()) {
3135             reset_eagain();
3136             av_usleep(10000);
3137             return 0;
3138         }
3139         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
3140         return AVERROR_EOF;
3141     }
3142
3143     if (ost->filter) {
3144         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
3145             return ret;
3146         if (!ist)
3147             return 0;
3148     } else {
3149         av_assert0(ost->source_index >= 0);
3150         ist = input_streams[ost->source_index];
3151     }
3152
3153     ret = process_input(ist->file_index);
3154     if (ret == AVERROR(EAGAIN)) {
3155         if (input_files[ist->file_index]->eagain)
3156             ost->unavailable = 1;
3157         return 0;
3158     }
3159     if (ret < 0)
3160         return ret == AVERROR_EOF ? 0 : ret;
3161
3162     return reap_filters();
3163 }
3164
3165 /*
3166  * The following code is the main loop of the file converter
3167  */
3168 static int transcode(void)
3169 {
3170     int ret, i;
3171     AVFormatContext *os;
3172     OutputStream *ost;
3173     InputStream *ist;
3174     int64_t timer_start;
3175
3176     ret = transcode_init();
3177     if (ret < 0)
3178         goto fail;
3179
3180     if (stdin_interaction) {
3181         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3182     }
3183
3184     timer_start = av_gettime();
3185
3186 #if HAVE_PTHREADS
3187     if ((ret = init_input_threads()) < 0)
3188         goto fail;
3189 #endif
3190
3191     while (!received_sigterm) {
3192         int64_t cur_time= av_gettime();
3193
3194         /* if 'q' pressed, exits */
3195         if (stdin_interaction)
3196             if (check_keyboard_interaction(cur_time) < 0)
3197                 break;
3198
3199         /* check if there's any stream where output is still needed */
3200         if (!need_output()) {
3201             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3202             break;
3203         }
3204
3205         ret = transcode_step();
3206         if (ret < 0) {
3207             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
3208                 continue;
3209
3210             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
3211             break;
3212         }
3213
3214         /* dump report by using the output first video and audio streams */
3215         print_report(0, timer_start, cur_time);
3216     }
3217 #if HAVE_PTHREADS
3218     free_input_threads();
3219 #endif
3220
3221     /* at the end of stream, we must flush the decoder buffers */
3222     for (i = 0; i < nb_input_streams; i++) {
3223         ist = input_streams[i];
3224         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3225             output_packet(ist, NULL);
3226         }
3227     }
3228     flush_encoders();
3229
3230     term_exit();
3231
3232     /* write the trailer if needed and close file */
3233     for (i = 0; i < nb_output_files; i++) {
3234         os = output_files[i]->ctx;
3235         av_write_trailer(os);
3236     }
3237
3238     /* dump report by using the first video and audio streams */
3239     print_report(1, timer_start, av_gettime());
3240
3241     /* close each encoder */
3242     for (i = 0; i < nb_output_streams; i++) {
3243         ost = output_streams[i];
3244         if (ost->encoding_needed) {
3245             av_freep(&ost->st->codec->stats_in);
3246             avcodec_close(ost->st->codec);
3247         }
3248     }
3249
3250     /* close each decoder */
3251     for (i = 0; i < nb_input_streams; i++) {
3252         ist = input_streams[i];
3253         if (ist->decoding_needed) {
3254             avcodec_close(ist->st->codec);
3255         }
3256     }
3257
3258     /* finished ! */
3259     ret = 0;
3260
3261  fail:
3262 #if HAVE_PTHREADS
3263     free_input_threads();
3264 #endif
3265
3266     if (output_streams) {
3267         for (i = 0; i < nb_output_streams; i++) {
3268             ost = output_streams[i];
3269             if (ost) {
3270                 if (ost->stream_copy)
3271                     av_freep(&ost->st->codec->extradata);
3272                 if (ost->logfile) {
3273                     fclose(ost->logfile);
3274                     ost->logfile = NULL;
3275                 }
3276                 av_freep(&ost->st->codec->subtitle_header);
3277                 av_freep(&ost->forced_kf_pts);
3278                 av_freep(&ost->apad);
3279                 av_dict_free(&ost->opts);
3280                 av_dict_free(&ost->swr_opts);
3281                 av_dict_free(&ost->resample_opts);
3282             }
3283         }
3284     }
3285     return ret;
3286 }
3287
3288
3289 static int64_t getutime(void)
3290 {
3291 #if HAVE_GETRUSAGE
3292     struct rusage rusage;
3293
3294     getrusage(RUSAGE_SELF, &rusage);
3295     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3296 #elif HAVE_GETPROCESSTIMES
3297     HANDLE proc;
3298     FILETIME c, e, k, u;
3299     proc = GetCurrentProcess();
3300     GetProcessTimes(proc, &c, &e, &k, &u);
3301     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3302 #else
3303     return av_gettime();
3304 #endif
3305 }
3306
3307 static int64_t getmaxrss(void)
3308 {
3309 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3310     struct rusage rusage;
3311     getrusage(RUSAGE_SELF, &rusage);
3312     return (int64_t)rusage.ru_maxrss * 1024;
3313 #elif HAVE_GETPROCESSMEMORYINFO
3314     HANDLE proc;
3315     PROCESS_MEMORY_COUNTERS memcounters;
3316     proc = GetCurrentProcess();
3317     memcounters.cb = sizeof(memcounters);
3318     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3319     return memcounters.PeakPagefileUsage;
3320 #else
3321     return 0;
3322 #endif
3323 }
3324
3325 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3326 {
3327 }
3328
3329 int main(int argc, char **argv)
3330 {
3331     int ret;
3332     int64_t ti;
3333
3334     atexit(exit_program);
3335
3336     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3337
3338     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3339     parse_loglevel(argc, argv, options);
3340
3341     if(argc>1 && !strcmp(argv[1], "-d")){
3342         run_as_daemon=1;
3343         av_log_set_callback(log_callback_null);
3344         argc--;
3345         argv++;
3346     }
3347
3348     avcodec_register_all();
3349 #if CONFIG_AVDEVICE
3350     avdevice_register_all();
3351 #endif
3352     avfilter_register_all();
3353     av_register_all();
3354     avformat_network_init();
3355
3356     show_banner(argc, argv, options);
3357
3358     term_init();
3359
3360     /* parse options and open all input/output files */
3361     ret = ffmpeg_parse_options(argc, argv);
3362     if (ret < 0)
3363         exit(1);
3364
3365     if (nb_output_files <= 0 && nb_input_files == 0) {
3366         show_usage();
3367         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3368         exit(1);
3369     }
3370
3371     /* file converter / grab */
3372     if (nb_output_files <= 0) {
3373         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3374         exit(1);
3375     }
3376
3377 //     if (nb_input_files == 0) {
3378 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3379 //         exit(1);
3380 //     }
3381
3382     current_time = ti = getutime();
3383     if (transcode() < 0)
3384         exit(1);
3385     ti = getutime() - ti;
3386     if (do_benchmark) {
3387         printf("bench: utime=%0.3fs\n", ti / 1000000.0);
3388     }
3389     av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" frames successfully decoded, %"PRIu64" decoding errors\n",
3390            decode_error_stat[0], decode_error_stat[1]);
3391     if (2*decode_error_stat[0] < decode_error_stat[1])
3392         exit(254);
3393
3394     exit(received_nb_signals ? 255 : 0);
3395     return 0;
3396 }