ffmpeg: check ost->finished in reap_filters()
[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 #include <stdint.h>
34
35 #if HAVE_ISATTY
36 #if HAVE_IO_H
37 #include <io.h>
38 #endif
39 #if HAVE_UNISTD_H
40 #include <unistd.h>
41 #endif
42 #endif
43
44 #include "libavformat/avformat.h"
45 #include "libavdevice/avdevice.h"
46 #include "libswresample/swresample.h"
47 #include "libavutil/opt.h"
48 #include "libavutil/channel_layout.h"
49 #include "libavutil/parseutils.h"
50 #include "libavutil/samplefmt.h"
51 #include "libavutil/fifo.h"
52 #include "libavutil/intreadwrite.h"
53 #include "libavutil/dict.h"
54 #include "libavutil/mathematics.h"
55 #include "libavutil/pixdesc.h"
56 #include "libavutil/avstring.h"
57 #include "libavutil/libm.h"
58 #include "libavutil/imgutils.h"
59 #include "libavutil/timestamp.h"
60 #include "libavutil/bprint.h"
61 #include "libavutil/time.h"
62 #include "libavformat/os_support.h"
63
64 #include "libavformat/ffm.h" // not public API
65
66 # include "libavfilter/avcodec.h"
67 # include "libavfilter/avfilter.h"
68 # include "libavfilter/buffersrc.h"
69 # include "libavfilter/buffersink.h"
70
71 #if HAVE_SYS_RESOURCE_H
72 #include <sys/time.h>
73 #include <sys/types.h>
74 #include <sys/resource.h>
75 #elif HAVE_GETPROCESSTIMES
76 #include <windows.h>
77 #endif
78 #if HAVE_GETPROCESSMEMORYINFO
79 #include <windows.h>
80 #include <psapi.h>
81 #endif
82
83 #if HAVE_SYS_SELECT_H
84 #include <sys/select.h>
85 #endif
86
87 #if HAVE_TERMIOS_H
88 #include <fcntl.h>
89 #include <sys/ioctl.h>
90 #include <sys/time.h>
91 #include <termios.h>
92 #elif HAVE_KBHIT
93 #include <conio.h>
94 #endif
95
96 #if HAVE_PTHREADS
97 #include <pthread.h>
98 #endif
99
100 #include <time.h>
101
102 #include "ffmpeg.h"
103 #include "cmdutils.h"
104
105 #include "libavutil/avassert.h"
106
107 const char program_name[] = "ffmpeg";
108 const int program_birth_year = 2000;
109
110 static FILE *vstats_file;
111
112 const char *const forced_keyframes_const_names[] = {
113     "n",
114     "n_forced",
115     "prev_forced_n",
116     "prev_forced_t",
117     "t",
118     NULL
119 };
120
121 static void do_video_stats(OutputStream *ost, int frame_size);
122 static int64_t getutime(void);
123 static int64_t getmaxrss(void);
124
125 static int run_as_daemon  = 0;
126 static int64_t video_size = 0;
127 static int64_t audio_size = 0;
128 static int64_t subtitle_size = 0;
129 static int64_t extra_size = 0;
130 static int nb_frames_dup = 0;
131 static int nb_frames_drop = 0;
132 static int64_t decode_error_stat[2];
133
134 static int current_time;
135 AVIOContext *progress_avio = NULL;
136
137 static uint8_t *subtitle_out;
138
139 #if HAVE_PTHREADS
140 /* signal to input threads that they should exit; set by the main thread */
141 static int transcoding_finished;
142 #endif
143
144 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
145
146 InputStream **input_streams = NULL;
147 int        nb_input_streams = 0;
148 InputFile   **input_files   = NULL;
149 int        nb_input_files   = 0;
150
151 OutputStream **output_streams = NULL;
152 int         nb_output_streams = 0;
153 OutputFile   **output_files   = NULL;
154 int         nb_output_files   = 0;
155
156 FilterGraph **filtergraphs;
157 int        nb_filtergraphs;
158
159 #if HAVE_TERMIOS_H
160
161 /* init terminal so that we can grab keys */
162 static struct termios oldtty;
163 static int restore_tty;
164 #endif
165
166 static void free_input_threads(void);
167
168
169 /* sub2video hack:
170    Convert subtitles to video with alpha to insert them in filter graphs.
171    This is a temporary solution until libavfilter gets real subtitles support.
172  */
173
174 static int sub2video_get_blank_frame(InputStream *ist)
175 {
176     int ret;
177     AVFrame *frame = ist->sub2video.frame;
178
179     av_frame_unref(frame);
180     ist->sub2video.frame->width  = ist->sub2video.w;
181     ist->sub2video.frame->height = ist->sub2video.h;
182     ist->sub2video.frame->format = AV_PIX_FMT_RGB32;
183     if ((ret = av_frame_get_buffer(frame, 32)) < 0)
184         return ret;
185     memset(frame->data[0], 0, frame->height * frame->linesize[0]);
186     return 0;
187 }
188
189 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
190                                 AVSubtitleRect *r)
191 {
192     uint32_t *pal, *dst2;
193     uint8_t *src, *src2;
194     int x, y;
195
196     if (r->type != SUBTITLE_BITMAP) {
197         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
198         return;
199     }
200     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
201         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
202         return;
203     }
204
205     dst += r->y * dst_linesize + r->x * 4;
206     src = r->pict.data[0];
207     pal = (uint32_t *)r->pict.data[1];
208     for (y = 0; y < r->h; y++) {
209         dst2 = (uint32_t *)dst;
210         src2 = src;
211         for (x = 0; x < r->w; x++)
212             *(dst2++) = pal[*(src2++)];
213         dst += dst_linesize;
214         src += r->pict.linesize[0];
215     }
216 }
217
218 static void sub2video_push_ref(InputStream *ist, int64_t pts)
219 {
220     AVFrame *frame = ist->sub2video.frame;
221     int i;
222
223     av_assert1(frame->data[0]);
224     ist->sub2video.last_pts = frame->pts = pts;
225     for (i = 0; i < ist->nb_filters; i++)
226         av_buffersrc_add_frame_flags(ist->filters[i]->filter, frame,
227                                      AV_BUFFERSRC_FLAG_KEEP_REF |
228                                      AV_BUFFERSRC_FLAG_PUSH);
229 }
230
231 static void sub2video_update(InputStream *ist, AVSubtitle *sub)
232 {
233     int w = ist->sub2video.w, h = ist->sub2video.h;
234     AVFrame *frame = ist->sub2video.frame;
235     int8_t *dst;
236     int     dst_linesize;
237     int num_rects, i;
238     int64_t pts, end_pts;
239
240     if (!frame)
241         return;
242     if (sub) {
243         pts       = av_rescale_q(sub->pts + sub->start_display_time * 1000,
244                                  AV_TIME_BASE_Q, ist->st->time_base);
245         end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000,
246                                  AV_TIME_BASE_Q, ist->st->time_base);
247         num_rects = sub->num_rects;
248     } else {
249         pts       = ist->sub2video.end_pts;
250         end_pts   = INT64_MAX;
251         num_rects = 0;
252     }
253     if (sub2video_get_blank_frame(ist) < 0) {
254         av_log(ist->st->codec, AV_LOG_ERROR,
255                "Impossible to get a blank canvas.\n");
256         return;
257     }
258     dst          = frame->data    [0];
259     dst_linesize = frame->linesize[0];
260     for (i = 0; i < num_rects; i++)
261         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
262     sub2video_push_ref(ist, pts);
263     ist->sub2video.end_pts = end_pts;
264 }
265
266 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
267 {
268     InputFile *infile = input_files[ist->file_index];
269     int i, j, nb_reqs;
270     int64_t pts2;
271
272     /* When a frame is read from a file, examine all sub2video streams in
273        the same file and send the sub2video frame again. Otherwise, decoded
274        video frames could be accumulating in the filter graph while a filter
275        (possibly overlay) is desperately waiting for a subtitle frame. */
276     for (i = 0; i < infile->nb_streams; i++) {
277         InputStream *ist2 = input_streams[infile->ist_index + i];
278         if (!ist2->sub2video.frame)
279             continue;
280         /* subtitles seem to be usually muxed ahead of other streams;
281            if not, substracting a larger time here is necessary */
282         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
283         /* do not send the heartbeat frame if the subtitle is already ahead */
284         if (pts2 <= ist2->sub2video.last_pts)
285             continue;
286         if (pts2 >= ist2->sub2video.end_pts || !ist2->sub2video.frame->data[0])
287             sub2video_update(ist2, NULL);
288         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
289             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
290         if (nb_reqs)
291             sub2video_push_ref(ist2, pts2);
292     }
293 }
294
295 static void sub2video_flush(InputStream *ist)
296 {
297     int i;
298
299     for (i = 0; i < ist->nb_filters; i++)
300         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
301 }
302
303 /* end of sub2video hack */
304
305 void term_exit(void)
306 {
307     av_log(NULL, AV_LOG_QUIET, "%s", "");
308 #if HAVE_TERMIOS_H
309     if(restore_tty)
310         tcsetattr (0, TCSANOW, &oldtty);
311 #endif
312 }
313
314 static volatile int received_sigterm = 0;
315 static volatile int received_nb_signals = 0;
316
317 static void
318 sigterm_handler(int sig)
319 {
320     received_sigterm = sig;
321     received_nb_signals++;
322     term_exit();
323     if(received_nb_signals > 3)
324         exit_program(123);
325 }
326
327 void term_init(void)
328 {
329 #if HAVE_TERMIOS_H
330     if(!run_as_daemon){
331         struct termios tty;
332         int istty = 1;
333 #if HAVE_ISATTY
334         istty = isatty(0) && isatty(2);
335 #endif
336         if (istty && tcgetattr (0, &tty) == 0) {
337             oldtty = tty;
338             restore_tty = 1;
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 ffmpeg_cleanup(int ret)
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         av_frame_free(&output_streams[i]->filtered_frame);
472
473         av_parser_close(output_streams[i]->parser);
474
475         av_freep(&output_streams[i]->forced_keyframes);
476         av_expr_free(output_streams[i]->forced_keyframes_pexpr);
477         av_freep(&output_streams[i]->avfilter);
478         av_freep(&output_streams[i]->logfile_prefix);
479         av_freep(&output_streams[i]);
480     }
481 #if HAVE_PTHREADS
482     free_input_threads();
483 #endif
484     for (i = 0; i < nb_input_files; i++) {
485         avformat_close_input(&input_files[i]->ctx);
486         av_freep(&input_files[i]);
487     }
488     for (i = 0; i < nb_input_streams; i++) {
489         av_frame_free(&input_streams[i]->decoded_frame);
490         av_frame_free(&input_streams[i]->filter_frame);
491         av_dict_free(&input_streams[i]->opts);
492         avsubtitle_free(&input_streams[i]->prev_sub.subtitle);
493         av_frame_free(&input_streams[i]->sub2video.frame);
494         av_freep(&input_streams[i]->filters);
495         av_freep(&input_streams[i]->hwaccel_device);
496         av_freep(&input_streams[i]);
497     }
498
499     if (vstats_file)
500         fclose(vstats_file);
501     av_free(vstats_filename);
502
503     av_freep(&input_streams);
504     av_freep(&input_files);
505     av_freep(&output_streams);
506     av_freep(&output_files);
507
508     uninit_opts();
509
510     avformat_network_deinit();
511
512     if (received_sigterm) {
513         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
514                (int) received_sigterm);
515     }
516     term_exit();
517 }
518
519 void assert_avoptions(AVDictionary *m)
520 {
521     AVDictionaryEntry *t;
522     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
523         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
524         exit_program(1);
525     }
526 }
527
528 static void abort_codec_experimental(AVCodec *c, int encoder)
529 {
530     exit_program(1);
531 }
532
533 static void update_benchmark(const char *fmt, ...)
534 {
535     if (do_benchmark_all) {
536         int64_t t = getutime();
537         va_list va;
538         char buf[1024];
539
540         if (fmt) {
541             va_start(va, fmt);
542             vsnprintf(buf, sizeof(buf), fmt, va);
543             va_end(va);
544             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
545         }
546         current_time = t;
547     }
548 }
549
550 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
551 {
552     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
553     AVCodecContext          *avctx = ost->st->codec;
554     int ret;
555
556     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
557         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
558         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
559
560     /*
561      * Audio encoders may split the packets --  #frames in != #packets out.
562      * But there is no reordering, so we can limit the number of output packets
563      * by simply dropping them here.
564      * Counting encoded video frames needs to be done separately because of
565      * reordering, see do_video_out()
566      */
567     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
568         if (ost->frame_number >= ost->max_frames) {
569             av_free_packet(pkt);
570             return;
571         }
572         ost->frame_number++;
573     }
574
575     while (bsfc) {
576         AVPacket new_pkt = *pkt;
577         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
578                                            &new_pkt.data, &new_pkt.size,
579                                            pkt->data, pkt->size,
580                                            pkt->flags & AV_PKT_FLAG_KEY);
581         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
582             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
583             if(t) {
584                 memcpy(t, new_pkt.data, new_pkt.size);
585                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
586                 new_pkt.data = t;
587                 new_pkt.buf = NULL;
588                 a = 1;
589             } else
590                 a = AVERROR(ENOMEM);
591         }
592         if (a > 0) {
593             av_free_packet(pkt);
594             new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
595                                            av_buffer_default_free, NULL, 0);
596             if (!new_pkt.buf)
597                 exit_program(1);
598         } else if (a < 0) {
599             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
600                    bsfc->filter->name, pkt->stream_index,
601                    avctx->codec ? avctx->codec->name : "copy");
602             print_error("", a);
603             if (exit_on_error)
604                 exit_program(1);
605         }
606         *pkt = new_pkt;
607
608         bsfc = bsfc->next;
609     }
610
611     if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS) &&
612         (avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) &&
613         pkt->dts != AV_NOPTS_VALUE &&
614         ost->last_mux_dts != AV_NOPTS_VALUE) {
615       int64_t max = ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
616       if (pkt->dts < max) {
617         int loglevel = max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG;
618         av_log(s, loglevel, "Non-monotonous DTS in output stream "
619                "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
620                ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
621         if (exit_on_error) {
622             av_log(NULL, AV_LOG_FATAL, "aborting.\n");
623             exit_program(1);
624         }
625         av_log(s, loglevel, "changing to %"PRId64". This may result "
626                "in incorrect timestamps in the output file.\n",
627                max);
628         if(pkt->pts >= pkt->dts)
629             pkt->pts = FFMAX(pkt->pts, max);
630         pkt->dts = max;
631       }
632     }
633     ost->last_mux_dts = pkt->dts;
634
635     pkt->stream_index = ost->index;
636
637     if (debug_ts) {
638         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
639                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
640                 av_get_media_type_string(ost->st->codec->codec_type),
641                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
642                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
643                 pkt->size
644               );
645     }
646
647     ret = av_interleaved_write_frame(s, pkt);
648     if (ret < 0) {
649         print_error("av_interleaved_write_frame()", ret);
650         exit_program(1);
651     }
652 }
653
654 static void close_output_stream(OutputStream *ost)
655 {
656     OutputFile *of = output_files[ost->file_index];
657
658     ost->finished = 1;
659     if (of->shortest) {
660         int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, AV_TIME_BASE_Q);
661         of->recording_time = FFMIN(of->recording_time, end);
662     }
663 }
664
665 static int check_recording_time(OutputStream *ost)
666 {
667     OutputFile *of = output_files[ost->file_index];
668
669     if (of->recording_time != INT64_MAX &&
670         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
671                       AV_TIME_BASE_Q) >= 0) {
672         close_output_stream(ost);
673         return 0;
674     }
675     return 1;
676 }
677
678 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
679                          AVFrame *frame)
680 {
681     AVCodecContext *enc = ost->st->codec;
682     AVPacket pkt;
683     int got_packet = 0;
684
685     av_init_packet(&pkt);
686     pkt.data = NULL;
687     pkt.size = 0;
688
689     if (!check_recording_time(ost))
690         return;
691
692     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
693         frame->pts = ost->sync_opts;
694     ost->sync_opts = frame->pts + frame->nb_samples;
695
696     av_assert0(pkt.size || !pkt.data);
697     update_benchmark(NULL);
698     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
699         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
700         exit_program(1);
701     }
702     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
703
704     if (got_packet) {
705         if (pkt.pts != AV_NOPTS_VALUE)
706             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
707         if (pkt.dts != AV_NOPTS_VALUE)
708             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
709         if (pkt.duration > 0)
710             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
711
712         if (debug_ts) {
713             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
714                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
715                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
716                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
717         }
718
719         audio_size += pkt.size;
720         write_frame(s, &pkt, ost);
721
722         av_free_packet(&pkt);
723     }
724 }
725
726 static void do_subtitle_out(AVFormatContext *s,
727                             OutputStream *ost,
728                             InputStream *ist,
729                             AVSubtitle *sub)
730 {
731     int subtitle_out_max_size = 1024 * 1024;
732     int subtitle_out_size, nb, i;
733     AVCodecContext *enc;
734     AVPacket pkt;
735     int64_t pts;
736
737     if (sub->pts == AV_NOPTS_VALUE) {
738         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
739         if (exit_on_error)
740             exit_program(1);
741         return;
742     }
743
744     enc = ost->st->codec;
745
746     if (!subtitle_out) {
747         subtitle_out = av_malloc(subtitle_out_max_size);
748     }
749
750     /* Note: DVB subtitle need one packet to draw them and one other
751        packet to clear them */
752     /* XXX: signal it in the codec context ? */
753     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
754         nb = 2;
755     else
756         nb = 1;
757
758     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
759     pts = sub->pts;
760     if (output_files[ost->file_index]->start_time != AV_NOPTS_VALUE)
761         pts -= output_files[ost->file_index]->start_time;
762     for (i = 0; i < nb; i++) {
763         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
764         if (!check_recording_time(ost))
765             return;
766
767         sub->pts = pts;
768         // start_display_time is required to be 0
769         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
770         sub->end_display_time  -= sub->start_display_time;
771         sub->start_display_time = 0;
772         if (i == 1)
773             sub->num_rects = 0;
774         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
775                                                     subtitle_out_max_size, sub);
776         if (subtitle_out_size < 0) {
777             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
778             exit_program(1);
779         }
780
781         av_init_packet(&pkt);
782         pkt.data = subtitle_out;
783         pkt.size = subtitle_out_size;
784         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
785         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
786         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
787             /* XXX: the pts correction is handled here. Maybe handling
788                it in the codec would be better */
789             if (i == 0)
790                 pkt.pts += 90 * sub->start_display_time;
791             else
792                 pkt.pts += 90 * sub->end_display_time;
793         }
794         subtitle_size += pkt.size;
795         write_frame(s, &pkt, ost);
796     }
797 }
798
799 static void do_video_out(AVFormatContext *s,
800                          OutputStream *ost,
801                          AVFrame *in_picture)
802 {
803     int ret, format_video_sync;
804     AVPacket pkt;
805     AVCodecContext *enc = ost->st->codec;
806     int nb_frames, i;
807     double sync_ipts, delta;
808     double duration = 0;
809     int frame_size = 0;
810     InputStream *ist = NULL;
811
812     if (ost->source_index >= 0)
813         ist = input_streams[ost->source_index];
814
815     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
816         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
817
818     sync_ipts = in_picture->pts;
819     delta = sync_ipts - ost->sync_opts + duration;
820
821     /* by default, we output a single frame */
822     nb_frames = 1;
823
824     format_video_sync = video_sync_method;
825     if (format_video_sync == VSYNC_AUTO) {
826         if(!strcmp(s->oformat->name, "avi")) {
827             format_video_sync = VSYNC_VFR;
828         } else
829             format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
830         if (   ist
831             && format_video_sync == VSYNC_CFR
832             && input_files[ist->file_index]->ctx->nb_streams == 1
833             && input_files[ist->file_index]->input_ts_offset == 0) {
834             format_video_sync = VSYNC_VSCFR;
835         }
836         if (format_video_sync == VSYNC_CFR && copy_ts) {
837             format_video_sync = VSYNC_VSCFR;
838         }
839     }
840
841     switch (format_video_sync) {
842     case VSYNC_VSCFR:
843         if (ost->frame_number == 0 && delta - duration >= 0.5) {
844             av_log(NULL, AV_LOG_DEBUG, "Not duplicating %d initial frames\n", (int)lrintf(delta - duration));
845             delta = duration;
846             ost->sync_opts = lrint(sync_ipts);
847         }
848     case VSYNC_CFR:
849         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
850         if (delta < -1.1)
851             nb_frames = 0;
852         else if (delta > 1.1)
853             nb_frames = lrintf(delta);
854         break;
855     case VSYNC_VFR:
856         if (delta <= -0.6)
857             nb_frames = 0;
858         else if (delta > 0.6)
859             ost->sync_opts = lrint(sync_ipts);
860         break;
861     case VSYNC_DROP:
862     case VSYNC_PASSTHROUGH:
863         ost->sync_opts = lrint(sync_ipts);
864         break;
865     default:
866         av_assert0(0);
867     }
868
869     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
870     if (nb_frames == 0) {
871         nb_frames_drop++;
872         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
873         return;
874     } else if (nb_frames > 1) {
875         if (nb_frames > dts_error_threshold * 30) {
876             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
877             nb_frames_drop++;
878             return;
879         }
880         nb_frames_dup += nb_frames - 1;
881         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
882     }
883
884   /* duplicates frame if needed */
885   for (i = 0; i < nb_frames; i++) {
886     av_init_packet(&pkt);
887     pkt.data = NULL;
888     pkt.size = 0;
889
890     in_picture->pts = ost->sync_opts;
891
892 #if 1
893     if (!check_recording_time(ost))
894 #else
895     if (ost->frame_number >= ost->max_frames)
896 #endif
897         return;
898
899     if (s->oformat->flags & AVFMT_RAWPICTURE &&
900         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
901         /* raw pictures are written as AVPicture structure to
902            avoid any copies. We support temporarily the older
903            method. */
904         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
905         enc->coded_frame->top_field_first  = in_picture->top_field_first;
906         if (enc->coded_frame->interlaced_frame)
907             enc->field_order = enc->coded_frame->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
908         else
909             enc->field_order = AV_FIELD_PROGRESSIVE;
910         pkt.data   = (uint8_t *)in_picture;
911         pkt.size   =  sizeof(AVPicture);
912         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
913         pkt.flags |= AV_PKT_FLAG_KEY;
914
915         video_size += pkt.size;
916         write_frame(s, &pkt, ost);
917     } else {
918         int got_packet, forced_keyframe = 0;
919         double pts_time;
920
921         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME) &&
922             ost->top_field_first >= 0)
923             in_picture->top_field_first = !!ost->top_field_first;
924
925         if (in_picture->interlaced_frame) {
926             if (enc->codec->id == AV_CODEC_ID_MJPEG)
927                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
928             else
929                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
930         } else
931             enc->field_order = AV_FIELD_PROGRESSIVE;
932
933         in_picture->quality = ost->st->codec->global_quality;
934         if (!enc->me_threshold)
935             in_picture->pict_type = 0;
936
937         pts_time = in_picture->pts != AV_NOPTS_VALUE ?
938             in_picture->pts * av_q2d(enc->time_base) : NAN;
939         if (ost->forced_kf_index < ost->forced_kf_count &&
940             in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
941             ost->forced_kf_index++;
942             forced_keyframe = 1;
943         } else if (ost->forced_keyframes_pexpr) {
944             double res;
945             ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
946             res = av_expr_eval(ost->forced_keyframes_pexpr,
947                                ost->forced_keyframes_expr_const_values, NULL);
948             av_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
949                     ost->forced_keyframes_expr_const_values[FKF_N],
950                     ost->forced_keyframes_expr_const_values[FKF_N_FORCED],
951                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N],
952                     ost->forced_keyframes_expr_const_values[FKF_T],
953                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T],
954                     res);
955             if (res) {
956                 forced_keyframe = 1;
957                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] =
958                     ost->forced_keyframes_expr_const_values[FKF_N];
959                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] =
960                     ost->forced_keyframes_expr_const_values[FKF_T];
961                 ost->forced_keyframes_expr_const_values[FKF_N_FORCED] += 1;
962             }
963
964             ost->forced_keyframes_expr_const_values[FKF_N] += 1;
965         }
966         if (forced_keyframe) {
967             in_picture->pict_type = AV_PICTURE_TYPE_I;
968             av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
969         }
970
971         update_benchmark(NULL);
972         ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
973         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
974         if (ret < 0) {
975             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
976             exit_program(1);
977         }
978
979         if (got_packet) {
980             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
981                 pkt.pts = ost->sync_opts;
982
983             if (pkt.pts != AV_NOPTS_VALUE)
984                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
985             if (pkt.dts != AV_NOPTS_VALUE)
986                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
987
988             if (debug_ts) {
989                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
990                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
991                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
992                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
993             }
994
995             frame_size = pkt.size;
996             video_size += pkt.size;
997             write_frame(s, &pkt, ost);
998             av_free_packet(&pkt);
999
1000             /* if two pass, output log */
1001             if (ost->logfile && enc->stats_out) {
1002                 fprintf(ost->logfile, "%s", enc->stats_out);
1003             }
1004         }
1005     }
1006     ost->sync_opts++;
1007     /*
1008      * For video, number of frames in == number of packets out.
1009      * But there may be reordering, so we can't throw away frames on encoder
1010      * flush, we need to limit them here, before they go into encoder.
1011      */
1012     ost->frame_number++;
1013
1014     if (vstats_filename && frame_size)
1015         do_video_stats(ost, frame_size);
1016   }
1017 }
1018
1019 static double psnr(double d)
1020 {
1021     return -10.0 * log(d) / log(10.0);
1022 }
1023
1024 static void do_video_stats(OutputStream *ost, int frame_size)
1025 {
1026     AVCodecContext *enc;
1027     int frame_number;
1028     double ti1, bitrate, avg_bitrate;
1029
1030     /* this is executed just the first time do_video_stats is called */
1031     if (!vstats_file) {
1032         vstats_file = fopen(vstats_filename, "w");
1033         if (!vstats_file) {
1034             perror("fopen");
1035             exit_program(1);
1036         }
1037     }
1038
1039     enc = ost->st->codec;
1040     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1041         frame_number = ost->st->nb_frames;
1042         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1043         if (enc->flags&CODEC_FLAG_PSNR)
1044             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1045
1046         fprintf(vstats_file,"f_size= %6d ", frame_size);
1047         /* compute pts value */
1048         ti1 = ost->st->pts.val * av_q2d(enc->time_base);
1049         if (ti1 < 0.01)
1050             ti1 = 0.01;
1051
1052         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1053         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1054         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1055                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1056         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1057     }
1058 }
1059
1060 /**
1061  * Get and encode new output from any of the filtergraphs, without causing
1062  * activity.
1063  *
1064  * @return  0 for success, <0 for severe errors
1065  */
1066 static int reap_filters(void)
1067 {
1068     AVFrame *filtered_frame = NULL;
1069     int i;
1070     int64_t frame_pts;
1071
1072     /* Reap all buffers present in the buffer sinks */
1073     for (i = 0; i < nb_output_streams; i++) {
1074         OutputStream *ost = output_streams[i];
1075         OutputFile    *of = output_files[ost->file_index];
1076         int ret = 0;
1077
1078         if (!ost->filter)
1079             continue;
1080
1081         if (!ost->filtered_frame && !(ost->filtered_frame = av_frame_alloc())) {
1082             return AVERROR(ENOMEM);
1083         }
1084         filtered_frame = ost->filtered_frame;
1085
1086         while (1) {
1087             ret = av_buffersink_get_frame_flags(ost->filter->filter, filtered_frame,
1088                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1089             if (ret < 0) {
1090                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1091                     av_log(NULL, AV_LOG_WARNING,
1092                            "Error in av_buffersink_get_frame_flags(): %s\n", av_err2str(ret));
1093                 }
1094                 break;
1095             }
1096             if (ost->finished) {
1097                 av_frame_unref(filtered_frame);
1098                 continue;
1099             }
1100             frame_pts = AV_NOPTS_VALUE;
1101             if (filtered_frame->pts != AV_NOPTS_VALUE) {
1102                 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1103                 filtered_frame->pts = frame_pts = av_rescale_q(filtered_frame->pts,
1104                                                 ost->filter->filter->inputs[0]->time_base,
1105                                                 ost->st->codec->time_base) -
1106                                     av_rescale_q(start_time,
1107                                                 AV_TIME_BASE_Q,
1108                                                 ost->st->codec->time_base);
1109             }
1110             //if (ost->source_index >= 0)
1111             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1112
1113
1114             switch (ost->filter->filter->inputs[0]->type) {
1115             case AVMEDIA_TYPE_VIDEO:
1116                 filtered_frame->pts = frame_pts;
1117                 if (!ost->frame_aspect_ratio.num)
1118                     ost->st->codec->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
1119
1120                 do_video_out(of->ctx, ost, filtered_frame);
1121                 break;
1122             case AVMEDIA_TYPE_AUDIO:
1123                 filtered_frame->pts = frame_pts;
1124                 if (!(ost->st->codec->codec->capabilities & CODEC_CAP_PARAM_CHANGE) &&
1125                     ost->st->codec->channels != av_frame_get_channels(filtered_frame)) {
1126                     av_log(NULL, AV_LOG_ERROR,
1127                            "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
1128                     break;
1129                 }
1130                 do_audio_out(of->ctx, ost, filtered_frame);
1131                 break;
1132             default:
1133                 // TODO support subtitle filters
1134                 av_assert0(0);
1135             }
1136
1137             av_frame_unref(filtered_frame);
1138         }
1139     }
1140
1141     return 0;
1142 }
1143
1144 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1145 {
1146     char buf[1024];
1147     AVBPrint buf_script;
1148     OutputStream *ost;
1149     AVFormatContext *oc;
1150     int64_t total_size;
1151     AVCodecContext *enc;
1152     int frame_number, vid, i;
1153     double bitrate;
1154     int64_t pts = INT64_MIN;
1155     static int64_t last_time = -1;
1156     static int qp_histogram[52];
1157     int hours, mins, secs, us;
1158
1159     if (!print_stats && !is_last_report && !progress_avio)
1160         return;
1161
1162     if (!is_last_report) {
1163         if (last_time == -1) {
1164             last_time = cur_time;
1165             return;
1166         }
1167         if ((cur_time - last_time) < 500000)
1168             return;
1169         last_time = cur_time;
1170     }
1171
1172
1173     oc = output_files[0]->ctx;
1174
1175     total_size = avio_size(oc->pb);
1176     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1177         total_size = avio_tell(oc->pb);
1178
1179     buf[0] = '\0';
1180     vid = 0;
1181     av_bprint_init(&buf_script, 0, 1);
1182     for (i = 0; i < nb_output_streams; i++) {
1183         float q = -1;
1184         ost = output_streams[i];
1185         enc = ost->st->codec;
1186         if (!ost->stream_copy && enc->coded_frame)
1187             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1188         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1189             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1190             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1191                        ost->file_index, ost->index, q);
1192         }
1193         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1194             float fps, t = (cur_time-timer_start) / 1000000.0;
1195
1196             frame_number = ost->frame_number;
1197             fps = t > 1 ? frame_number / t : 0;
1198             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1199                      frame_number, fps < 9.95, fps, q);
1200             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1201             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1202             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1203                        ost->file_index, ost->index, q);
1204             if (is_last_report)
1205                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1206             if (qp_hist) {
1207                 int j;
1208                 int qp = lrintf(q);
1209                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1210                     qp_histogram[qp]++;
1211                 for (j = 0; j < 32; j++)
1212                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1213             }
1214             if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1215                 int j;
1216                 double error, error_sum = 0;
1217                 double scale, scale_sum = 0;
1218                 double p;
1219                 char type[3] = { 'Y','U','V' };
1220                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1221                 for (j = 0; j < 3; j++) {
1222                     if (is_last_report) {
1223                         error = enc->error[j];
1224                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1225                     } else {
1226                         error = enc->coded_frame->error[j];
1227                         scale = enc->width * enc->height * 255.0 * 255.0;
1228                     }
1229                     if (j)
1230                         scale /= 4;
1231                     error_sum += error;
1232                     scale_sum += scale;
1233                     p = psnr(error / scale);
1234                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1235                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1236                                ost->file_index, ost->index, type[j] | 32, p);
1237                 }
1238                 p = psnr(error_sum / scale_sum);
1239                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1240                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1241                            ost->file_index, ost->index, p);
1242             }
1243             vid = 1;
1244         }
1245         /* compute min output value */
1246         if ((is_last_report || !ost->finished) && ost->st->pts.val != AV_NOPTS_VALUE)
1247             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1248                                           ost->st->time_base, AV_TIME_BASE_Q));
1249     }
1250
1251     secs = pts / AV_TIME_BASE;
1252     us = pts % AV_TIME_BASE;
1253     mins = secs / 60;
1254     secs %= 60;
1255     hours = mins / 60;
1256     mins %= 60;
1257
1258     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1259
1260     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1261                                  "size=N/A time=");
1262     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1263                                  "size=%8.0fkB time=", total_size / 1024.0);
1264     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1265              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1266              (100 * us) / AV_TIME_BASE);
1267     if (bitrate < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1268                               "bitrate=N/A");
1269     else             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1270                               "bitrate=%6.1fkbits/s", bitrate);
1271     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
1272     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1273     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1274     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1275                hours, mins, secs, us);
1276
1277     if (nb_frames_dup || nb_frames_drop)
1278         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1279                 nb_frames_dup, nb_frames_drop);
1280     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1281     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1282
1283     if (print_stats || is_last_report) {
1284         if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
1285             fprintf(stderr, "%s    \r", buf);
1286         } else
1287             av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1288
1289     fflush(stderr);
1290     }
1291
1292     if (progress_avio) {
1293         av_bprintf(&buf_script, "progress=%s\n",
1294                    is_last_report ? "end" : "continue");
1295         avio_write(progress_avio, buf_script.str,
1296                    FFMIN(buf_script.len, buf_script.size - 1));
1297         avio_flush(progress_avio);
1298         av_bprint_finalize(&buf_script, NULL);
1299         if (is_last_report) {
1300             avio_close(progress_avio);
1301             progress_avio = NULL;
1302         }
1303     }
1304
1305     if (is_last_report) {
1306         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1307         av_log(NULL, AV_LOG_INFO, "\n");
1308         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1309                video_size / 1024.0,
1310                audio_size / 1024.0,
1311                subtitle_size / 1024.0,
1312                extra_size / 1024.0,
1313                100.0 * (total_size - raw) / raw
1314         );
1315         if(video_size + audio_size + subtitle_size + extra_size == 0){
1316             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1317         }
1318     }
1319 }
1320
1321 static void flush_encoders(void)
1322 {
1323     int i, ret;
1324
1325     for (i = 0; i < nb_output_streams; i++) {
1326         OutputStream   *ost = output_streams[i];
1327         AVCodecContext *enc = ost->st->codec;
1328         AVFormatContext *os = output_files[ost->file_index]->ctx;
1329         int stop_encoding = 0;
1330
1331         if (!ost->encoding_needed)
1332             continue;
1333
1334         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1335             continue;
1336         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1337             continue;
1338
1339         for (;;) {
1340             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1341             const char *desc;
1342             int64_t *size;
1343
1344             switch (ost->st->codec->codec_type) {
1345             case AVMEDIA_TYPE_AUDIO:
1346                 encode = avcodec_encode_audio2;
1347                 desc   = "Audio";
1348                 size   = &audio_size;
1349                 break;
1350             case AVMEDIA_TYPE_VIDEO:
1351                 encode = avcodec_encode_video2;
1352                 desc   = "Video";
1353                 size   = &video_size;
1354                 break;
1355             default:
1356                 stop_encoding = 1;
1357             }
1358
1359             if (encode) {
1360                 AVPacket pkt;
1361                 int got_packet;
1362                 av_init_packet(&pkt);
1363                 pkt.data = NULL;
1364                 pkt.size = 0;
1365
1366                 update_benchmark(NULL);
1367                 ret = encode(enc, &pkt, NULL, &got_packet);
1368                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1369                 if (ret < 0) {
1370                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1371                     exit_program(1);
1372                 }
1373                 *size += pkt.size;
1374                 if (ost->logfile && enc->stats_out) {
1375                     fprintf(ost->logfile, "%s", enc->stats_out);
1376                 }
1377                 if (!got_packet) {
1378                     stop_encoding = 1;
1379                     break;
1380                 }
1381                 if (pkt.pts != AV_NOPTS_VALUE)
1382                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1383                 if (pkt.dts != AV_NOPTS_VALUE)
1384                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1385                 if (pkt.duration > 0)
1386                     pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1387                 write_frame(os, &pkt, ost);
1388                 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
1389                     do_video_stats(ost, pkt.size);
1390                 }
1391             }
1392
1393             if (stop_encoding)
1394                 break;
1395         }
1396     }
1397 }
1398
1399 /*
1400  * Check whether a packet from ist should be written into ost at this time
1401  */
1402 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1403 {
1404     OutputFile *of = output_files[ost->file_index];
1405     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1406
1407     if (ost->source_index != ist_index)
1408         return 0;
1409
1410     if (of->start_time != AV_NOPTS_VALUE && ist->pts < of->start_time)
1411         return 0;
1412
1413     return 1;
1414 }
1415
1416 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1417 {
1418     OutputFile *of = output_files[ost->file_index];
1419     InputFile   *f = input_files [ist->file_index];
1420     int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1421     int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1422     int64_t ist_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ist->st->time_base);
1423     AVPicture pict;
1424     AVPacket opkt;
1425
1426     av_init_packet(&opkt);
1427
1428     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1429         !ost->copy_initial_nonkeyframes)
1430         return;
1431
1432     if (pkt->pts == AV_NOPTS_VALUE) {
1433         if (!ost->frame_number && ist->pts < start_time &&
1434             !ost->copy_prior_start)
1435             return;
1436     } else {
1437         if (!ost->frame_number && pkt->pts < ist_tb_start_time &&
1438             !ost->copy_prior_start)
1439             return;
1440     }
1441
1442     if (of->recording_time != INT64_MAX &&
1443         ist->pts >= of->recording_time + start_time) {
1444         close_output_stream(ost);
1445         return;
1446     }
1447
1448     if (f->recording_time != INT64_MAX) {
1449         start_time = f->ctx->start_time;
1450         if (f->start_time != AV_NOPTS_VALUE)
1451             start_time += f->start_time;
1452         if (ist->pts >= f->recording_time + start_time) {
1453             close_output_stream(ost);
1454             return;
1455         }
1456     }
1457
1458     /* force the input stream PTS */
1459     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1460         audio_size += pkt->size;
1461     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1462         video_size += pkt->size;
1463         ost->sync_opts++;
1464     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1465         subtitle_size += pkt->size;
1466     }
1467
1468     if (pkt->pts != AV_NOPTS_VALUE)
1469         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1470     else
1471         opkt.pts = AV_NOPTS_VALUE;
1472
1473     if (pkt->dts == AV_NOPTS_VALUE)
1474         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1475     else
1476         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1477     opkt.dts -= ost_tb_start_time;
1478
1479     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1480         int duration = av_get_audio_frame_duration(ist->st->codec, pkt->size);
1481         if(!duration)
1482             duration = ist->st->codec->frame_size;
1483         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1484                                                (AVRational){1, ist->st->codec->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
1485                                                ost->st->time_base) - ost_tb_start_time;
1486     }
1487
1488     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1489     opkt.flags    = pkt->flags;
1490
1491     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1492     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1493        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1494        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1495        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1496        ) {
1497         if (av_parser_change(ost->parser, ost->st->codec,
1498                              &opkt.data, &opkt.size,
1499                              pkt->data, pkt->size,
1500                              pkt->flags & AV_PKT_FLAG_KEY)) {
1501             opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1502             if (!opkt.buf)
1503                 exit_program(1);
1504         }
1505     } else {
1506         opkt.data = pkt->data;
1507         opkt.size = pkt->size;
1508     }
1509     av_copy_packet_side_data(&opkt, pkt);
1510
1511     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1512         /* store AVPicture in AVPacket, as expected by the output format */
1513         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1514         opkt.data = (uint8_t *)&pict;
1515         opkt.size = sizeof(AVPicture);
1516         opkt.flags |= AV_PKT_FLAG_KEY;
1517     }
1518
1519     write_frame(of->ctx, &opkt, ost);
1520     ost->st->codec->frame_number++;
1521 }
1522
1523 int guess_input_channel_layout(InputStream *ist)
1524 {
1525     AVCodecContext *dec = ist->st->codec;
1526
1527     if (!dec->channel_layout) {
1528         char layout_name[256];
1529
1530         if (dec->channels > ist->guess_layout_max)
1531             return 0;
1532         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1533         if (!dec->channel_layout)
1534             return 0;
1535         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1536                                      dec->channels, dec->channel_layout);
1537         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1538                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1539     }
1540     return 1;
1541 }
1542
1543 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1544 {
1545     AVFrame *decoded_frame, *f;
1546     AVCodecContext *avctx = ist->st->codec;
1547     int i, ret, err = 0, resample_changed;
1548     AVRational decoded_frame_tb;
1549
1550     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1551         return AVERROR(ENOMEM);
1552     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1553         return AVERROR(ENOMEM);
1554     decoded_frame = ist->decoded_frame;
1555
1556     update_benchmark(NULL);
1557     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1558     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1559
1560     if (ret >= 0 && avctx->sample_rate <= 0) {
1561         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1562         ret = AVERROR_INVALIDDATA;
1563     }
1564
1565     if (*got_output || ret<0 || pkt->size)
1566         decode_error_stat[ret<0] ++;
1567
1568     if (!*got_output || ret < 0) {
1569         if (!pkt->size) {
1570             for (i = 0; i < ist->nb_filters; i++)
1571 #if 1
1572                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1573 #else
1574                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1575 #endif
1576         }
1577         return ret;
1578     }
1579
1580 #if 1
1581     /* increment next_dts to use for the case where the input stream does not
1582        have timestamps or there are multiple frames in the packet */
1583     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1584                      avctx->sample_rate;
1585     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1586                      avctx->sample_rate;
1587 #endif
1588
1589     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1590                        ist->resample_channels       != avctx->channels               ||
1591                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1592                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1593     if (resample_changed) {
1594         char layout1[64], layout2[64];
1595
1596         if (!guess_input_channel_layout(ist)) {
1597             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1598                    "layout for Input Stream #%d.%d\n", ist->file_index,
1599                    ist->st->index);
1600             exit_program(1);
1601         }
1602         decoded_frame->channel_layout = avctx->channel_layout;
1603
1604         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1605                                      ist->resample_channel_layout);
1606         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1607                                      decoded_frame->channel_layout);
1608
1609         av_log(NULL, AV_LOG_INFO,
1610                "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",
1611                ist->file_index, ist->st->index,
1612                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1613                ist->resample_channels, layout1,
1614                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1615                avctx->channels, layout2);
1616
1617         ist->resample_sample_fmt     = decoded_frame->format;
1618         ist->resample_sample_rate    = decoded_frame->sample_rate;
1619         ist->resample_channel_layout = decoded_frame->channel_layout;
1620         ist->resample_channels       = avctx->channels;
1621
1622         for (i = 0; i < nb_filtergraphs; i++)
1623             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1624                 FilterGraph *fg = filtergraphs[i];
1625                 int j;
1626                 if (configure_filtergraph(fg) < 0) {
1627                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1628                     exit_program(1);
1629                 }
1630                 for (j = 0; j < fg->nb_outputs; j++) {
1631                     OutputStream *ost = fg->outputs[j]->ost;
1632                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1633                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1634                         av_buffersink_set_frame_size(ost->filter->filter,
1635                                                      ost->st->codec->frame_size);
1636                 }
1637             }
1638     }
1639
1640     /* if the decoder provides a pts, use it instead of the last packet pts.
1641        the decoder could be delaying output by a packet or more. */
1642     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1643         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1644         decoded_frame_tb   = avctx->time_base;
1645     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1646         decoded_frame->pts = decoded_frame->pkt_pts;
1647         pkt->pts           = AV_NOPTS_VALUE;
1648         decoded_frame_tb   = ist->st->time_base;
1649     } else if (pkt->pts != AV_NOPTS_VALUE) {
1650         decoded_frame->pts = pkt->pts;
1651         pkt->pts           = AV_NOPTS_VALUE;
1652         decoded_frame_tb   = ist->st->time_base;
1653     }else {
1654         decoded_frame->pts = ist->dts;
1655         decoded_frame_tb   = AV_TIME_BASE_Q;
1656     }
1657     if (decoded_frame->pts != AV_NOPTS_VALUE)
1658         decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
1659                                               (AVRational){1, ist->st->codec->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
1660                                               (AVRational){1, ist->st->codec->sample_rate});
1661     for (i = 0; i < ist->nb_filters; i++) {
1662         if (i < ist->nb_filters - 1) {
1663             f = ist->filter_frame;
1664             err = av_frame_ref(f, decoded_frame);
1665             if (err < 0)
1666                 break;
1667         } else
1668             f = decoded_frame;
1669         err = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f,
1670                                      AV_BUFFERSRC_FLAG_PUSH);
1671         if (err == AVERROR_EOF)
1672             err = 0; /* ignore */
1673         if (err < 0)
1674             break;
1675     }
1676     decoded_frame->pts = AV_NOPTS_VALUE;
1677
1678     av_frame_unref(ist->filter_frame);
1679     av_frame_unref(decoded_frame);
1680     return err < 0 ? err : ret;
1681 }
1682
1683 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1684 {
1685     AVFrame *decoded_frame, *f;
1686     int i, ret = 0, err = 0, resample_changed;
1687     int64_t best_effort_timestamp;
1688     AVRational *frame_sample_aspect;
1689
1690     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1691         return AVERROR(ENOMEM);
1692     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1693         return AVERROR(ENOMEM);
1694     decoded_frame = ist->decoded_frame;
1695     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1696
1697     update_benchmark(NULL);
1698     ret = avcodec_decode_video2(ist->st->codec,
1699                                 decoded_frame, got_output, pkt);
1700     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1701
1702     if (*got_output || ret<0 || pkt->size)
1703         decode_error_stat[ret<0] ++;
1704
1705     if (!*got_output || ret < 0) {
1706         if (!pkt->size) {
1707             for (i = 0; i < ist->nb_filters; i++)
1708 #if 1
1709                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1710 #else
1711                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1712 #endif
1713         }
1714         return ret;
1715     }
1716
1717     if(ist->top_field_first>=0)
1718         decoded_frame->top_field_first = ist->top_field_first;
1719
1720     if (ist->hwaccel_retrieve_data && decoded_frame->format == ist->hwaccel_pix_fmt) {
1721         err = ist->hwaccel_retrieve_data(ist->st->codec, decoded_frame);
1722         if (err < 0)
1723             goto fail;
1724     }
1725     ist->hwaccel_retrieved_pix_fmt = decoded_frame->format;
1726
1727     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1728     if(best_effort_timestamp != AV_NOPTS_VALUE)
1729         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1730
1731     if (debug_ts) {
1732         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1733                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1734                 ist->st->index, av_ts2str(decoded_frame->pts),
1735                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1736                 best_effort_timestamp,
1737                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1738                 decoded_frame->key_frame, decoded_frame->pict_type);
1739     }
1740
1741     pkt->size = 0;
1742
1743     if (ist->st->sample_aspect_ratio.num)
1744         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1745
1746     resample_changed = ist->resample_width   != decoded_frame->width  ||
1747                        ist->resample_height  != decoded_frame->height ||
1748                        ist->resample_pix_fmt != decoded_frame->format;
1749     if (resample_changed) {
1750         av_log(NULL, AV_LOG_INFO,
1751                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1752                ist->file_index, ist->st->index,
1753                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1754                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1755
1756         ist->resample_width   = decoded_frame->width;
1757         ist->resample_height  = decoded_frame->height;
1758         ist->resample_pix_fmt = decoded_frame->format;
1759
1760         for (i = 0; i < nb_filtergraphs; i++) {
1761             if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
1762                 configure_filtergraph(filtergraphs[i]) < 0) {
1763                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1764                 exit_program(1);
1765             }
1766         }
1767     }
1768
1769     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1770     for (i = 0; i < ist->nb_filters; i++) {
1771         if (!frame_sample_aspect->num)
1772             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1773
1774         if (i < ist->nb_filters - 1) {
1775             f = ist->filter_frame;
1776             err = av_frame_ref(f, decoded_frame);
1777             if (err < 0)
1778                 break;
1779         } else
1780             f = decoded_frame;
1781         ret = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f, AV_BUFFERSRC_FLAG_PUSH);
1782         if (ret == AVERROR_EOF) {
1783             ret = 0; /* ignore */
1784         } else if (ret < 0) {
1785             av_log(NULL, AV_LOG_FATAL,
1786                    "Failed to inject frame into filter network: %s\n", av_err2str(ret));
1787             exit_program(1);
1788         }
1789     }
1790
1791 fail:
1792     av_frame_unref(ist->filter_frame);
1793     av_frame_unref(decoded_frame);
1794     return err < 0 ? err : ret;
1795 }
1796
1797 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1798 {
1799     AVSubtitle subtitle;
1800     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1801                                           &subtitle, got_output, pkt);
1802
1803     if (*got_output || ret<0 || pkt->size)
1804         decode_error_stat[ret<0] ++;
1805
1806     if (ret < 0 || !*got_output) {
1807         if (!pkt->size)
1808             sub2video_flush(ist);
1809         return ret;
1810     }
1811
1812     if (ist->fix_sub_duration) {
1813         int end = 1;
1814         if (ist->prev_sub.got_output) {
1815             end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1816                              1000, AV_TIME_BASE);
1817             if (end < ist->prev_sub.subtitle.end_display_time) {
1818                 av_log(ist->st->codec, AV_LOG_DEBUG,
1819                        "Subtitle duration reduced from %d to %d%s\n",
1820                        ist->prev_sub.subtitle.end_display_time, end,
1821                        end <= 0 ? ", dropping it" : "");
1822                 ist->prev_sub.subtitle.end_display_time = end;
1823             }
1824         }
1825         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1826         FFSWAP(int,        ret,         ist->prev_sub.ret);
1827         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1828         if (end <= 0)
1829             goto out;
1830     }
1831
1832     if (!*got_output)
1833         return ret;
1834
1835     sub2video_update(ist, &subtitle);
1836
1837     if (!subtitle.num_rects)
1838         goto out;
1839
1840     for (i = 0; i < nb_output_streams; i++) {
1841         OutputStream *ost = output_streams[i];
1842
1843         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1844             continue;
1845
1846         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
1847     }
1848
1849 out:
1850     avsubtitle_free(&subtitle);
1851     return ret;
1852 }
1853
1854 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1855 static int output_packet(InputStream *ist, const AVPacket *pkt)
1856 {
1857     int ret = 0, i;
1858     int got_output = 0;
1859
1860     AVPacket avpkt;
1861     if (!ist->saw_first_ts) {
1862         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;
1863         ist->pts = 0;
1864         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1865             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1866             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1867         }
1868         ist->saw_first_ts = 1;
1869     }
1870
1871     if (ist->next_dts == AV_NOPTS_VALUE)
1872         ist->next_dts = ist->dts;
1873     if (ist->next_pts == AV_NOPTS_VALUE)
1874         ist->next_pts = ist->pts;
1875
1876     if (pkt == NULL) {
1877         /* EOF handling */
1878         av_init_packet(&avpkt);
1879         avpkt.data = NULL;
1880         avpkt.size = 0;
1881         goto handle_eof;
1882     } else {
1883         avpkt = *pkt;
1884     }
1885
1886     if (pkt->dts != AV_NOPTS_VALUE) {
1887         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1888         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1889             ist->next_pts = ist->pts = ist->dts;
1890     }
1891
1892     // while we have more to decode or while the decoder did output something on EOF
1893     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1894         int duration;
1895     handle_eof:
1896
1897         ist->pts = ist->next_pts;
1898         ist->dts = ist->next_dts;
1899
1900         if (avpkt.size && avpkt.size != pkt->size) {
1901             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1902                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1903             ist->showed_multi_packet_warning = 1;
1904         }
1905
1906         switch (ist->st->codec->codec_type) {
1907         case AVMEDIA_TYPE_AUDIO:
1908             ret = decode_audio    (ist, &avpkt, &got_output);
1909             break;
1910         case AVMEDIA_TYPE_VIDEO:
1911             ret = decode_video    (ist, &avpkt, &got_output);
1912             if (avpkt.duration) {
1913                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1914             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1915                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1916                 duration = ((int64_t)AV_TIME_BASE *
1917                                 ist->st->codec->time_base.num * ticks) /
1918                                 ist->st->codec->time_base.den;
1919             } else
1920                 duration = 0;
1921
1922             if(ist->dts != AV_NOPTS_VALUE && duration) {
1923                 ist->next_dts += duration;
1924             }else
1925                 ist->next_dts = AV_NOPTS_VALUE;
1926
1927             if (got_output)
1928                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1929             break;
1930         case AVMEDIA_TYPE_SUBTITLE:
1931             ret = transcode_subtitles(ist, &avpkt, &got_output);
1932             break;
1933         default:
1934             return -1;
1935         }
1936
1937         if (ret < 0)
1938             return ret;
1939
1940         avpkt.dts=
1941         avpkt.pts= AV_NOPTS_VALUE;
1942
1943         // touch data and size only if not EOF
1944         if (pkt) {
1945             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1946                 ret = avpkt.size;
1947             avpkt.data += ret;
1948             avpkt.size -= ret;
1949         }
1950         if (!got_output) {
1951             continue;
1952         }
1953     }
1954
1955     /* handle stream copy */
1956     if (!ist->decoding_needed) {
1957         ist->dts = ist->next_dts;
1958         switch (ist->st->codec->codec_type) {
1959         case AVMEDIA_TYPE_AUDIO:
1960             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1961                              ist->st->codec->sample_rate;
1962             break;
1963         case AVMEDIA_TYPE_VIDEO:
1964             if (ist->framerate.num) {
1965                 // TODO: Remove work-around for c99-to-c89 issue 7
1966                 AVRational time_base_q = AV_TIME_BASE_Q;
1967                 int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate));
1968                 ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q);
1969             } else if (pkt->duration) {
1970                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1971             } else if(ist->st->codec->time_base.num != 0) {
1972                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1973                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1974                                   ist->st->codec->time_base.num * ticks) /
1975                                   ist->st->codec->time_base.den;
1976             }
1977             break;
1978         }
1979         ist->pts = ist->dts;
1980         ist->next_pts = ist->next_dts;
1981     }
1982     for (i = 0; pkt && i < nb_output_streams; i++) {
1983         OutputStream *ost = output_streams[i];
1984
1985         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1986             continue;
1987
1988         do_streamcopy(ist, ost, pkt);
1989     }
1990
1991     return 0;
1992 }
1993
1994 static void print_sdp(void)
1995 {
1996     char sdp[16384];
1997     int i;
1998     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1999
2000     if (!avc)
2001         exit_program(1);
2002     for (i = 0; i < nb_output_files; i++)
2003         avc[i] = output_files[i]->ctx;
2004
2005     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
2006     printf("SDP:\n%s\n", sdp);
2007     fflush(stdout);
2008     av_freep(&avc);
2009 }
2010
2011 static const HWAccel *get_hwaccel(enum AVPixelFormat pix_fmt)
2012 {
2013     int i;
2014     for (i = 0; hwaccels[i].name; i++)
2015         if (hwaccels[i].pix_fmt == pix_fmt)
2016             return &hwaccels[i];
2017     return NULL;
2018 }
2019
2020 static enum AVPixelFormat get_format(AVCodecContext *s, const enum AVPixelFormat *pix_fmts)
2021 {
2022     InputStream *ist = s->opaque;
2023     const enum AVPixelFormat *p;
2024     int ret;
2025
2026     for (p = pix_fmts; *p != -1; p++) {
2027         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(*p);
2028         const HWAccel *hwaccel;
2029
2030         if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
2031             break;
2032
2033         hwaccel = get_hwaccel(*p);
2034         if (!hwaccel ||
2035             (ist->active_hwaccel_id && ist->active_hwaccel_id != hwaccel->id) ||
2036             (ist->hwaccel_id != HWACCEL_AUTO && ist->hwaccel_id != hwaccel->id))
2037             continue;
2038
2039         ret = hwaccel->init(s);
2040         if (ret < 0) {
2041             if (ist->hwaccel_id == hwaccel->id) {
2042                 av_log(NULL, AV_LOG_FATAL,
2043                        "%s hwaccel requested for input stream #%d:%d, "
2044                        "but cannot be initialized.\n", hwaccel->name,
2045                        ist->file_index, ist->st->index);
2046                 exit_program(1);
2047             }
2048             continue;
2049         }
2050         ist->active_hwaccel_id = hwaccel->id;
2051         ist->hwaccel_pix_fmt   = *p;
2052         break;
2053     }
2054
2055     return *p;
2056 }
2057
2058 static int get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
2059 {
2060     InputStream *ist = s->opaque;
2061
2062     if (ist->hwaccel_get_buffer && frame->format == ist->hwaccel_pix_fmt)
2063         return ist->hwaccel_get_buffer(s, frame, flags);
2064
2065     return avcodec_default_get_buffer2(s, frame, flags);
2066 }
2067
2068 static int init_input_stream(int ist_index, char *error, int error_len)
2069 {
2070     int ret;
2071     InputStream *ist = input_streams[ist_index];
2072
2073     if (ist->decoding_needed) {
2074         AVCodec *codec = ist->dec;
2075         if (!codec) {
2076             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2077                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2078             return AVERROR(EINVAL);
2079         }
2080
2081         ist->st->codec->opaque      = ist;
2082         ist->st->codec->get_format  = get_format;
2083         ist->st->codec->get_buffer2 = get_buffer;
2084         ist->st->codec->thread_safe_callbacks = 1;
2085
2086         av_opt_set_int(ist->st->codec, "refcounted_frames", 1, 0);
2087
2088         if (!av_dict_get(ist->opts, "threads", NULL, 0))
2089             av_dict_set(&ist->opts, "threads", "auto", 0);
2090         if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
2091             char errbuf[128];
2092             if (ret == AVERROR_EXPERIMENTAL)
2093                 abort_codec_experimental(codec, 0);
2094
2095             av_strerror(ret, errbuf, sizeof(errbuf));
2096
2097             snprintf(error, error_len,
2098                      "Error while opening decoder for input stream "
2099                      "#%d:%d : %s",
2100                      ist->file_index, ist->st->index, errbuf);
2101             return ret;
2102         }
2103         assert_avoptions(ist->opts);
2104     }
2105
2106     ist->next_pts = AV_NOPTS_VALUE;
2107     ist->next_dts = AV_NOPTS_VALUE;
2108     ist->is_start = 1;
2109
2110     return 0;
2111 }
2112
2113 static InputStream *get_input_stream(OutputStream *ost)
2114 {
2115     if (ost->source_index >= 0)
2116         return input_streams[ost->source_index];
2117     return NULL;
2118 }
2119
2120 static int compare_int64(const void *a, const void *b)
2121 {
2122     int64_t va = *(int64_t *)a, vb = *(int64_t *)b;
2123     return va < vb ? -1 : va > vb ? +1 : 0;
2124 }
2125
2126 static void parse_forced_key_frames(char *kf, OutputStream *ost,
2127                                     AVCodecContext *avctx)
2128 {
2129     char *p;
2130     int n = 1, i, size, index = 0;
2131     int64_t t, *pts;
2132
2133     for (p = kf; *p; p++)
2134         if (*p == ',')
2135             n++;
2136     size = n;
2137     pts = av_malloc(sizeof(*pts) * size);
2138     if (!pts) {
2139         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
2140         exit_program(1);
2141     }
2142
2143     p = kf;
2144     for (i = 0; i < n; i++) {
2145         char *next = strchr(p, ',');
2146
2147         if (next)
2148             *next++ = 0;
2149
2150         if (!memcmp(p, "chapters", 8)) {
2151
2152             AVFormatContext *avf = output_files[ost->file_index]->ctx;
2153             int j;
2154
2155             if (avf->nb_chapters > INT_MAX - size ||
2156                 !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
2157                                      sizeof(*pts)))) {
2158                 av_log(NULL, AV_LOG_FATAL,
2159                        "Could not allocate forced key frames array.\n");
2160                 exit_program(1);
2161             }
2162             t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
2163             t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2164
2165             for (j = 0; j < avf->nb_chapters; j++) {
2166                 AVChapter *c = avf->chapters[j];
2167                 av_assert1(index < size);
2168                 pts[index++] = av_rescale_q(c->start, c->time_base,
2169                                             avctx->time_base) + t;
2170             }
2171
2172         } else {
2173
2174             t = parse_time_or_die("force_key_frames", p, 1);
2175             av_assert1(index < size);
2176             pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2177
2178         }
2179
2180         p = next;
2181     }
2182
2183     av_assert0(index == size);
2184     qsort(pts, size, sizeof(*pts), compare_int64);
2185     ost->forced_kf_count = size;
2186     ost->forced_kf_pts   = pts;
2187 }
2188
2189 static void report_new_stream(int input_index, AVPacket *pkt)
2190 {
2191     InputFile *file = input_files[input_index];
2192     AVStream *st = file->ctx->streams[pkt->stream_index];
2193
2194     if (pkt->stream_index < file->nb_streams_warn)
2195         return;
2196     av_log(file->ctx, AV_LOG_WARNING,
2197            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
2198            av_get_media_type_string(st->codec->codec_type),
2199            input_index, pkt->stream_index,
2200            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
2201     file->nb_streams_warn = pkt->stream_index + 1;
2202 }
2203
2204 static int transcode_init(void)
2205 {
2206     int ret = 0, i, j, k;
2207     AVFormatContext *oc;
2208     AVCodecContext *codec;
2209     OutputStream *ost;
2210     InputStream *ist;
2211     char error[1024];
2212     int want_sdp = 1;
2213
2214     for (i = 0; i < nb_filtergraphs; i++) {
2215         FilterGraph *fg = filtergraphs[i];
2216         for (j = 0; j < fg->nb_outputs; j++) {
2217             OutputFilter *ofilter = fg->outputs[j];
2218             if (!ofilter->ost || ofilter->ost->source_index >= 0)
2219                 continue;
2220             if (fg->nb_inputs != 1)
2221                 continue;
2222             for (k = nb_input_streams-1; k >= 0 ; k--)
2223                 if (fg->inputs[0]->ist == input_streams[k])
2224                     break;
2225             ofilter->ost->source_index = k;
2226         }
2227     }
2228
2229     /* init framerate emulation */
2230     for (i = 0; i < nb_input_files; i++) {
2231         InputFile *ifile = input_files[i];
2232         if (ifile->rate_emu)
2233             for (j = 0; j < ifile->nb_streams; j++)
2234                 input_streams[j + ifile->ist_index]->start = av_gettime();
2235     }
2236
2237     /* output stream init */
2238     for (i = 0; i < nb_output_files; i++) {
2239         oc = output_files[i]->ctx;
2240         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2241             av_dump_format(oc, i, oc->filename, 1);
2242             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2243             return AVERROR(EINVAL);
2244         }
2245     }
2246
2247     /* init complex filtergraphs */
2248     for (i = 0; i < nb_filtergraphs; i++)
2249         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2250             return ret;
2251
2252     /* for each output stream, we compute the right encoding parameters */
2253     for (i = 0; i < nb_output_streams; i++) {
2254         AVCodecContext *icodec = NULL;
2255         ost = output_streams[i];
2256         oc  = output_files[ost->file_index]->ctx;
2257         ist = get_input_stream(ost);
2258
2259         if (ost->attachment_filename)
2260             continue;
2261
2262         codec  = ost->st->codec;
2263
2264         if (ist) {
2265             icodec = ist->st->codec;
2266
2267             ost->st->disposition          = ist->st->disposition;
2268             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2269             codec->chroma_sample_location = icodec->chroma_sample_location;
2270         } else {
2271             for (j=0; j<oc->nb_streams; j++) {
2272                 AVStream *st = oc->streams[j];
2273                 if (st != ost->st && st->codec->codec_type == codec->codec_type)
2274                     break;
2275             }
2276             if (j == oc->nb_streams)
2277                 if (codec->codec_type == AVMEDIA_TYPE_AUDIO || codec->codec_type == AVMEDIA_TYPE_VIDEO)
2278                     ost->st->disposition = AV_DISPOSITION_DEFAULT;
2279         }
2280
2281         if (ost->stream_copy) {
2282             AVRational sar;
2283             uint64_t extra_size;
2284
2285             av_assert0(ist && !ost->filter);
2286
2287             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2288
2289             if (extra_size > INT_MAX) {
2290                 return AVERROR(EINVAL);
2291             }
2292
2293             /* if stream_copy is selected, no need to decode or encode */
2294             codec->codec_id   = icodec->codec_id;
2295             codec->codec_type = icodec->codec_type;
2296
2297             if (!codec->codec_tag) {
2298                 unsigned int codec_tag;
2299                 if (!oc->oformat->codec_tag ||
2300                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2301                      !av_codec_get_tag2(oc->oformat->codec_tag, icodec->codec_id, &codec_tag))
2302                     codec->codec_tag = icodec->codec_tag;
2303             }
2304
2305             codec->bit_rate       = icodec->bit_rate;
2306             codec->rc_max_rate    = icodec->rc_max_rate;
2307             codec->rc_buffer_size = icodec->rc_buffer_size;
2308             codec->field_order    = icodec->field_order;
2309             codec->extradata      = av_mallocz(extra_size);
2310             if (!codec->extradata) {
2311                 return AVERROR(ENOMEM);
2312             }
2313             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2314             codec->extradata_size= icodec->extradata_size;
2315             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2316
2317             codec->time_base = ist->st->time_base;
2318             /*
2319              * Avi is a special case here because it supports variable fps but
2320              * having the fps and timebase differe significantly adds quite some
2321              * overhead
2322              */
2323             if(!strcmp(oc->oformat->name, "avi")) {
2324                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2325                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2326                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2327                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2328                      || copy_tb==2){
2329                     codec->time_base.num = ist->st->r_frame_rate.den;
2330                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2331                     codec->ticks_per_frame = 2;
2332                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2333                                  && av_q2d(ist->st->time_base) < 1.0/500
2334                     || copy_tb==0){
2335                     codec->time_base = icodec->time_base;
2336                     codec->time_base.num *= icodec->ticks_per_frame;
2337                     codec->time_base.den *= 2;
2338                     codec->ticks_per_frame = 2;
2339                 }
2340             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2341                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2342                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2343                       && strcmp(oc->oformat->name, "f4v")
2344             ) {
2345                 if(   copy_tb<0 && icodec->time_base.den
2346                                 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2347                                 && av_q2d(ist->st->time_base) < 1.0/500
2348                    || copy_tb==0){
2349                     codec->time_base = icodec->time_base;
2350                     codec->time_base.num *= icodec->ticks_per_frame;
2351                 }
2352             }
2353             if (   codec->codec_tag == AV_RL32("tmcd")
2354                 && icodec->time_base.num < icodec->time_base.den
2355                 && icodec->time_base.num > 0
2356                 && 121LL*icodec->time_base.num > icodec->time_base.den) {
2357                 codec->time_base = icodec->time_base;
2358             }
2359
2360             if (ist && !ost->frame_rate.num)
2361                 ost->frame_rate = ist->framerate;
2362             if(ost->frame_rate.num)
2363                 codec->time_base = av_inv_q(ost->frame_rate);
2364
2365             av_reduce(&codec->time_base.num, &codec->time_base.den,
2366                         codec->time_base.num, codec->time_base.den, INT_MAX);
2367
2368             ost->parser = av_parser_init(codec->codec_id);
2369
2370             switch (codec->codec_type) {
2371             case AVMEDIA_TYPE_AUDIO:
2372                 if (audio_volume != 256) {
2373                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2374                     exit_program(1);
2375                 }
2376                 codec->channel_layout     = icodec->channel_layout;
2377                 codec->sample_rate        = icodec->sample_rate;
2378                 codec->channels           = icodec->channels;
2379                 codec->frame_size         = icodec->frame_size;
2380                 codec->audio_service_type = icodec->audio_service_type;
2381                 codec->block_align        = icodec->block_align;
2382                 codec->delay              = icodec->delay;
2383                 if((codec->block_align == 1 || codec->block_align == 1152 || codec->block_align == 576) && codec->codec_id == AV_CODEC_ID_MP3)
2384                     codec->block_align= 0;
2385                 if(codec->codec_id == AV_CODEC_ID_AC3)
2386                     codec->block_align= 0;
2387                 break;
2388             case AVMEDIA_TYPE_VIDEO:
2389                 codec->pix_fmt            = icodec->pix_fmt;
2390                 codec->width              = icodec->width;
2391                 codec->height             = icodec->height;
2392                 codec->has_b_frames       = icodec->has_b_frames;
2393                 if (ost->frame_aspect_ratio.num) { // overridden by the -aspect cli option
2394                     sar =
2395                         av_mul_q(ost->frame_aspect_ratio,
2396                                  (AVRational){ codec->height, codec->width });
2397                     av_log(NULL, AV_LOG_WARNING, "Overriding aspect ratio "
2398                            "with stream copy may produce invalid files\n");
2399                 }
2400                 else if (ist->st->sample_aspect_ratio.num)
2401                     sar = ist->st->sample_aspect_ratio;
2402                 else
2403                     sar = icodec->sample_aspect_ratio;
2404                 ost->st->sample_aspect_ratio = codec->sample_aspect_ratio = sar;
2405                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2406                 break;
2407             case AVMEDIA_TYPE_SUBTITLE:
2408                 codec->width  = icodec->width;
2409                 codec->height = icodec->height;
2410                 break;
2411             case AVMEDIA_TYPE_DATA:
2412             case AVMEDIA_TYPE_ATTACHMENT:
2413                 break;
2414             default:
2415                 abort();
2416             }
2417         } else {
2418             if (!ost->enc)
2419                 ost->enc = avcodec_find_encoder(codec->codec_id);
2420             if (!ost->enc) {
2421                 /* should only happen when a default codec is not present. */
2422                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2423                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2424                 ret = AVERROR(EINVAL);
2425                 goto dump_format;
2426             }
2427
2428             if (ist)
2429                 ist->decoding_needed++;
2430             ost->encoding_needed = 1;
2431
2432             if (!ost->filter &&
2433                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2434                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2435                     FilterGraph *fg;
2436                     fg = init_simple_filtergraph(ist, ost);
2437                     if (configure_filtergraph(fg)) {
2438                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2439                         exit_program(1);
2440                     }
2441             }
2442
2443             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2444                 if (ost->filter && !ost->frame_rate.num)
2445                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2446                 if (ist && !ost->frame_rate.num)
2447                     ost->frame_rate = ist->framerate;
2448                 if (ist && !ost->frame_rate.num)
2449                     ost->frame_rate = ist->st->r_frame_rate;
2450                 if (ist && !ost->frame_rate.num) {
2451                     ost->frame_rate = (AVRational){25, 1};
2452                     av_log(NULL, AV_LOG_WARNING,
2453                            "No information "
2454                            "about the input framerate is available. Falling "
2455                            "back to a default value of 25fps for output stream #%d:%d. Use the -r option "
2456                            "if you want a different framerate.\n",
2457                            ost->file_index, ost->index);
2458                 }
2459 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2460                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2461                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2462                     ost->frame_rate = ost->enc->supported_framerates[idx];
2463                 }
2464             }
2465
2466             switch (codec->codec_type) {
2467             case AVMEDIA_TYPE_AUDIO:
2468                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2469                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2470                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2471                 codec->channels       = avfilter_link_get_channels(ost->filter->filter->inputs[0]);
2472                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2473                 break;
2474             case AVMEDIA_TYPE_VIDEO:
2475                 codec->time_base = av_inv_q(ost->frame_rate);
2476                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2477                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2478                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2479                    && (video_sync_method == VSYNC_CFR || video_sync_method == VSYNC_VSCFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2480                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2481                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2482                 }
2483                 for (j = 0; j < ost->forced_kf_count; j++)
2484                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2485                                                          AV_TIME_BASE_Q,
2486                                                          codec->time_base);
2487
2488                 codec->width  = ost->filter->filter->inputs[0]->w;
2489                 codec->height = ost->filter->filter->inputs[0]->h;
2490                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2491                     ost->frame_aspect_ratio.num ? // overridden by the -aspect cli option
2492                     av_mul_q(ost->frame_aspect_ratio, (AVRational){ codec->height, codec->width }) :
2493                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2494                 if (!strncmp(ost->enc->name, "libx264", 7) &&
2495                     codec->pix_fmt == AV_PIX_FMT_NONE &&
2496                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2497                     av_log(NULL, AV_LOG_WARNING,
2498                            "No pixel format specified, %s for H.264 encoding chosen.\n"
2499                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2500                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2501                 if (!strncmp(ost->enc->name, "mpeg2video", 10) &&
2502                     codec->pix_fmt == AV_PIX_FMT_NONE &&
2503                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2504                     av_log(NULL, AV_LOG_WARNING,
2505                            "No pixel format specified, %s for MPEG-2 encoding chosen.\n"
2506                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2507                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2508                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2509
2510                 if (!icodec ||
2511                     codec->width   != icodec->width  ||
2512                     codec->height  != icodec->height ||
2513                     codec->pix_fmt != icodec->pix_fmt) {
2514                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2515                 }
2516
2517                 if (ost->forced_keyframes) {
2518                     if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
2519                         ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
2520                                             forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
2521                         if (ret < 0) {
2522                             av_log(NULL, AV_LOG_ERROR,
2523                                    "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
2524                             return ret;
2525                         }
2526                         ost->forced_keyframes_expr_const_values[FKF_N] = 0;
2527                         ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
2528                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
2529                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;
2530                     } else {
2531                         parse_forced_key_frames(ost->forced_keyframes, ost, ost->st->codec);
2532                     }
2533                 }
2534                 break;
2535             case AVMEDIA_TYPE_SUBTITLE:
2536                 codec->time_base = (AVRational){1, 1000};
2537                 if (!codec->width) {
2538                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2539                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2540                 }
2541                 break;
2542             default:
2543                 abort();
2544                 break;
2545             }
2546             /* two pass mode */
2547             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2548                 char logfilename[1024];
2549                 FILE *f;
2550
2551                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2552                          ost->logfile_prefix ? ost->logfile_prefix :
2553                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2554                          i);
2555                 if (!strcmp(ost->enc->name, "libx264")) {
2556                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2557                 } else {
2558                     if (codec->flags & CODEC_FLAG_PASS2) {
2559                         char  *logbuffer;
2560                         size_t logbuffer_size;
2561                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2562                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2563                                    logfilename);
2564                             exit_program(1);
2565                         }
2566                         codec->stats_in = logbuffer;
2567                     }
2568                     if (codec->flags & CODEC_FLAG_PASS1) {
2569                         f = av_fopen_utf8(logfilename, "wb");
2570                         if (!f) {
2571                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2572                                 logfilename, strerror(errno));
2573                             exit_program(1);
2574                         }
2575                         ost->logfile = f;
2576                     }
2577                 }
2578             }
2579         }
2580     }
2581
2582     /* open each encoder */
2583     for (i = 0; i < nb_output_streams; i++) {
2584         ost = output_streams[i];
2585         if (ost->encoding_needed) {
2586             AVCodec      *codec = ost->enc;
2587             AVCodecContext *dec = NULL;
2588
2589             if ((ist = get_input_stream(ost)))
2590                 dec = ist->st->codec;
2591             if (dec && dec->subtitle_header) {
2592                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2593                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2594                 if (!ost->st->codec->subtitle_header) {
2595                     ret = AVERROR(ENOMEM);
2596                     goto dump_format;
2597                 }
2598                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2599                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2600             }
2601             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2602                 av_dict_set(&ost->opts, "threads", "auto", 0);
2603             if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
2604                 if (ret == AVERROR_EXPERIMENTAL)
2605                     abort_codec_experimental(codec, 1);
2606                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2607                         ost->file_index, ost->index);
2608                 goto dump_format;
2609             }
2610             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2611                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2612                 av_buffersink_set_frame_size(ost->filter->filter,
2613                                              ost->st->codec->frame_size);
2614             assert_avoptions(ost->opts);
2615             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2616                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2617                                              " It takes bits/s as argument, not kbits/s\n");
2618             extra_size += ost->st->codec->extradata_size;
2619         } else {
2620             av_opt_set_dict(ost->st->codec, &ost->opts);
2621         }
2622     }
2623
2624     /* init input streams */
2625     for (i = 0; i < nb_input_streams; i++)
2626         if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
2627             for (i = 0; i < nb_output_streams; i++) {
2628                 ost = output_streams[i];
2629                 avcodec_close(ost->st->codec);
2630             }
2631             goto dump_format;
2632         }
2633
2634     /* discard unused programs */
2635     for (i = 0; i < nb_input_files; i++) {
2636         InputFile *ifile = input_files[i];
2637         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2638             AVProgram *p = ifile->ctx->programs[j];
2639             int discard  = AVDISCARD_ALL;
2640
2641             for (k = 0; k < p->nb_stream_indexes; k++)
2642                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2643                     discard = AVDISCARD_DEFAULT;
2644                     break;
2645                 }
2646             p->discard = discard;
2647         }
2648     }
2649
2650     /* open files and write file headers */
2651     for (i = 0; i < nb_output_files; i++) {
2652         oc = output_files[i]->ctx;
2653         oc->interrupt_callback = int_cb;
2654         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2655             char errbuf[128];
2656             av_strerror(ret, errbuf, sizeof(errbuf));
2657             snprintf(error, sizeof(error),
2658                      "Could not write header for output file #%d "
2659                      "(incorrect codec parameters ?): %s",
2660                      i, errbuf);
2661             ret = AVERROR(EINVAL);
2662             goto dump_format;
2663         }
2664 //         assert_avoptions(output_files[i]->opts);
2665         if (strcmp(oc->oformat->name, "rtp")) {
2666             want_sdp = 0;
2667         }
2668     }
2669
2670  dump_format:
2671     /* dump the file output parameters - cannot be done before in case
2672        of stream copy */
2673     for (i = 0; i < nb_output_files; i++) {
2674         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2675     }
2676
2677     /* dump the stream mapping */
2678     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2679     for (i = 0; i < nb_input_streams; i++) {
2680         ist = input_streams[i];
2681
2682         for (j = 0; j < ist->nb_filters; j++) {
2683             if (ist->filters[j]->graph->graph_desc) {
2684                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2685                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2686                        ist->filters[j]->name);
2687                 if (nb_filtergraphs > 1)
2688                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2689                 av_log(NULL, AV_LOG_INFO, "\n");
2690             }
2691         }
2692     }
2693
2694     for (i = 0; i < nb_output_streams; i++) {
2695         ost = output_streams[i];
2696
2697         if (ost->attachment_filename) {
2698             /* an attached file */
2699             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2700                    ost->attachment_filename, ost->file_index, ost->index);
2701             continue;
2702         }
2703
2704         if (ost->filter && ost->filter->graph->graph_desc) {
2705             /* output from a complex graph */
2706             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2707             if (nb_filtergraphs > 1)
2708                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2709
2710             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2711                    ost->index, ost->enc ? ost->enc->name : "?");
2712             continue;
2713         }
2714
2715         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2716                input_streams[ost->source_index]->file_index,
2717                input_streams[ost->source_index]->st->index,
2718                ost->file_index,
2719                ost->index);
2720         if (ost->sync_ist != input_streams[ost->source_index])
2721             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2722                    ost->sync_ist->file_index,
2723                    ost->sync_ist->st->index);
2724         if (ost->stream_copy)
2725             av_log(NULL, AV_LOG_INFO, " (copy)");
2726         else
2727             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2728                    input_streams[ost->source_index]->dec->name : "?",
2729                    ost->enc ? ost->enc->name : "?");
2730         av_log(NULL, AV_LOG_INFO, "\n");
2731     }
2732
2733     if (ret) {
2734         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2735         return ret;
2736     }
2737
2738     if (want_sdp) {
2739         print_sdp();
2740     }
2741
2742     return 0;
2743 }
2744
2745 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2746 static int need_output(void)
2747 {
2748     int i;
2749
2750     for (i = 0; i < nb_output_streams; i++) {
2751         OutputStream *ost    = output_streams[i];
2752         OutputFile *of       = output_files[ost->file_index];
2753         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2754
2755         if (ost->finished ||
2756             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2757             continue;
2758         if (ost->frame_number >= ost->max_frames) {
2759             int j;
2760             for (j = 0; j < of->ctx->nb_streams; j++)
2761                 close_output_stream(output_streams[of->ost_index + j]);
2762             continue;
2763         }
2764
2765         return 1;
2766     }
2767
2768     return 0;
2769 }
2770
2771 /**
2772  * Select the output stream to process.
2773  *
2774  * @return  selected output stream, or NULL if none available
2775  */
2776 static OutputStream *choose_output(void)
2777 {
2778     int i;
2779     int64_t opts_min = INT64_MAX;
2780     OutputStream *ost_min = NULL;
2781
2782     for (i = 0; i < nb_output_streams; i++) {
2783         OutputStream *ost = output_streams[i];
2784         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2785                                     AV_TIME_BASE_Q);
2786         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2787             opts_min = opts;
2788             ost_min  = ost;
2789         }
2790     }
2791     return ost_min;
2792 }
2793
2794 static int check_keyboard_interaction(int64_t cur_time)
2795 {
2796     int i, ret, key;
2797     static int64_t last_time;
2798     if (received_nb_signals)
2799         return AVERROR_EXIT;
2800     /* read_key() returns 0 on EOF */
2801     if(cur_time - last_time >= 100000 && !run_as_daemon){
2802         key =  read_key();
2803         last_time = cur_time;
2804     }else
2805         key = -1;
2806     if (key == 'q')
2807         return AVERROR_EXIT;
2808     if (key == '+') av_log_set_level(av_log_get_level()+10);
2809     if (key == '-') av_log_set_level(av_log_get_level()-10);
2810     if (key == 's') qp_hist     ^= 1;
2811     if (key == 'h'){
2812         if (do_hex_dump){
2813             do_hex_dump = do_pkt_dump = 0;
2814         } else if(do_pkt_dump){
2815             do_hex_dump = 1;
2816         } else
2817             do_pkt_dump = 1;
2818         av_log_set_level(AV_LOG_DEBUG);
2819     }
2820     if (key == 'c' || key == 'C'){
2821         char buf[4096], target[64], command[256], arg[256] = {0};
2822         double time;
2823         int k, n = 0;
2824         fprintf(stderr, "\nEnter command: <target>|all <time>|-1 <command>[ <argument>]\n");
2825         i = 0;
2826         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2827             if (k > 0)
2828                 buf[i++] = k;
2829         buf[i] = 0;
2830         if (k > 0 &&
2831             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2832             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2833                    target, time, command, arg);
2834             for (i = 0; i < nb_filtergraphs; i++) {
2835                 FilterGraph *fg = filtergraphs[i];
2836                 if (fg->graph) {
2837                     if (time < 0) {
2838                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2839                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2840                         fprintf(stderr, "Command reply for stream %d: ret:%d res:\n%s", i, ret, buf);
2841                     } else if (key == 'c') {
2842                         fprintf(stderr, "Queing commands only on filters supporting the specific command is unsupported\n");
2843                         ret = AVERROR_PATCHWELCOME;
2844                     } else {
2845                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2846                     }
2847                 }
2848             }
2849         } else {
2850             av_log(NULL, AV_LOG_ERROR,
2851                    "Parse error, at least 3 arguments were expected, "
2852                    "only %d given in string '%s'\n", n, buf);
2853         }
2854     }
2855     if (key == 'd' || key == 'D'){
2856         int debug=0;
2857         if(key == 'D') {
2858             debug = input_streams[0]->st->codec->debug<<1;
2859             if(!debug) debug = 1;
2860             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2861                 debug += debug;
2862         }else
2863             if(scanf("%d", &debug)!=1)
2864                 fprintf(stderr,"error parsing debug value\n");
2865         for(i=0;i<nb_input_streams;i++) {
2866             input_streams[i]->st->codec->debug = debug;
2867         }
2868         for(i=0;i<nb_output_streams;i++) {
2869             OutputStream *ost = output_streams[i];
2870             ost->st->codec->debug = debug;
2871         }
2872         if(debug) av_log_set_level(AV_LOG_DEBUG);
2873         fprintf(stderr,"debug=%d\n", debug);
2874     }
2875     if (key == '?'){
2876         fprintf(stderr, "key    function\n"
2877                         "?      show this help\n"
2878                         "+      increase verbosity\n"
2879                         "-      decrease verbosity\n"
2880                         "c      Send command to first matching filter supporting it\n"
2881                         "C      Send/Que command to all matching filters\n"
2882                         "D      cycle through available debug modes\n"
2883                         "h      dump packets/hex press to cycle through the 3 states\n"
2884                         "q      quit\n"
2885                         "s      Show QP histogram\n"
2886         );
2887     }
2888     return 0;
2889 }
2890
2891 #if HAVE_PTHREADS
2892 static void *input_thread(void *arg)
2893 {
2894     InputFile *f = arg;
2895     int ret = 0;
2896
2897     while (!transcoding_finished && ret >= 0) {
2898         AVPacket pkt;
2899         ret = av_read_frame(f->ctx, &pkt);
2900
2901         if (ret == AVERROR(EAGAIN)) {
2902             av_usleep(10000);
2903             ret = 0;
2904             continue;
2905         } else if (ret < 0)
2906             break;
2907
2908         pthread_mutex_lock(&f->fifo_lock);
2909         while (!av_fifo_space(f->fifo))
2910             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2911
2912         av_dup_packet(&pkt);
2913         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2914
2915         pthread_mutex_unlock(&f->fifo_lock);
2916     }
2917
2918     f->finished = 1;
2919     return NULL;
2920 }
2921
2922 static void free_input_threads(void)
2923 {
2924     int i;
2925
2926     if (nb_input_files == 1)
2927         return;
2928
2929     transcoding_finished = 1;
2930
2931     for (i = 0; i < nb_input_files; i++) {
2932         InputFile *f = input_files[i];
2933         AVPacket pkt;
2934
2935         if (!f->fifo || f->joined)
2936             continue;
2937
2938         pthread_mutex_lock(&f->fifo_lock);
2939         while (av_fifo_size(f->fifo)) {
2940             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2941             av_free_packet(&pkt);
2942         }
2943         pthread_cond_signal(&f->fifo_cond);
2944         pthread_mutex_unlock(&f->fifo_lock);
2945
2946         pthread_join(f->thread, NULL);
2947         f->joined = 1;
2948
2949         while (av_fifo_size(f->fifo)) {
2950             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2951             av_free_packet(&pkt);
2952         }
2953         av_fifo_free(f->fifo);
2954     }
2955 }
2956
2957 static int init_input_threads(void)
2958 {
2959     int i, ret;
2960
2961     if (nb_input_files == 1)
2962         return 0;
2963
2964     for (i = 0; i < nb_input_files; i++) {
2965         InputFile *f = input_files[i];
2966
2967         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2968             return AVERROR(ENOMEM);
2969
2970         pthread_mutex_init(&f->fifo_lock, NULL);
2971         pthread_cond_init (&f->fifo_cond, NULL);
2972
2973         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2974             return AVERROR(ret);
2975     }
2976     return 0;
2977 }
2978
2979 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2980 {
2981     int ret = 0;
2982
2983     pthread_mutex_lock(&f->fifo_lock);
2984
2985     if (av_fifo_size(f->fifo)) {
2986         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2987         pthread_cond_signal(&f->fifo_cond);
2988     } else {
2989         if (f->finished)
2990             ret = AVERROR_EOF;
2991         else
2992             ret = AVERROR(EAGAIN);
2993     }
2994
2995     pthread_mutex_unlock(&f->fifo_lock);
2996
2997     return ret;
2998 }
2999 #endif
3000
3001 static int get_input_packet(InputFile *f, AVPacket *pkt)
3002 {
3003     if (f->rate_emu) {
3004         int i;
3005         for (i = 0; i < f->nb_streams; i++) {
3006             InputStream *ist = input_streams[f->ist_index + i];
3007             int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
3008             int64_t now = av_gettime() - ist->start;
3009             if (pts > now)
3010                 return AVERROR(EAGAIN);
3011         }
3012     }
3013
3014 #if HAVE_PTHREADS
3015     if (nb_input_files > 1)
3016         return get_input_packet_mt(f, pkt);
3017 #endif
3018     return av_read_frame(f->ctx, pkt);
3019 }
3020
3021 static int got_eagain(void)
3022 {
3023     int i;
3024     for (i = 0; i < nb_output_streams; i++)
3025         if (output_streams[i]->unavailable)
3026             return 1;
3027     return 0;
3028 }
3029
3030 static void reset_eagain(void)
3031 {
3032     int i;
3033     for (i = 0; i < nb_input_files; i++)
3034         input_files[i]->eagain = 0;
3035     for (i = 0; i < nb_output_streams; i++)
3036         output_streams[i]->unavailable = 0;
3037 }
3038
3039 /*
3040  * Return
3041  * - 0 -- one packet was read and processed
3042  * - AVERROR(EAGAIN) -- no packets were available for selected file,
3043  *   this function should be called again
3044  * - AVERROR_EOF -- this function should not be called again
3045  */
3046 static int process_input(int file_index)
3047 {
3048     InputFile *ifile = input_files[file_index];
3049     AVFormatContext *is;
3050     InputStream *ist;
3051     AVPacket pkt;
3052     int ret, i, j;
3053
3054     is  = ifile->ctx;
3055     ret = get_input_packet(ifile, &pkt);
3056
3057     if (ret == AVERROR(EAGAIN)) {
3058         ifile->eagain = 1;
3059         return ret;
3060     }
3061     if (ret < 0) {
3062         if (ret != AVERROR_EOF) {
3063             print_error(is->filename, ret);
3064             if (exit_on_error)
3065                 exit_program(1);
3066         }
3067         ifile->eof_reached = 1;
3068
3069         for (i = 0; i < ifile->nb_streams; i++) {
3070             ist = input_streams[ifile->ist_index + i];
3071             if (ist->decoding_needed)
3072                 output_packet(ist, NULL);
3073
3074             /* mark all outputs that don't go through lavfi as finished */
3075             for (j = 0; j < nb_output_streams; j++) {
3076                 OutputStream *ost = output_streams[j];
3077
3078                 if (ost->source_index == ifile->ist_index + i &&
3079                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
3080                     close_output_stream(ost);
3081             }
3082         }
3083
3084         return AVERROR(EAGAIN);
3085     }
3086
3087     reset_eagain();
3088
3089     if (do_pkt_dump) {
3090         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
3091                          is->streams[pkt.stream_index]);
3092     }
3093     /* the following test is needed in case new streams appear
3094        dynamically in stream : we ignore them */
3095     if (pkt.stream_index >= ifile->nb_streams) {
3096         report_new_stream(file_index, &pkt);
3097         goto discard_packet;
3098     }
3099
3100     ist = input_streams[ifile->ist_index + pkt.stream_index];
3101     if (ist->discard)
3102         goto discard_packet;
3103
3104     if (debug_ts) {
3105         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
3106                "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",
3107                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
3108                av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
3109                av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
3110                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3111                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3112                av_ts2str(input_files[ist->file_index]->ts_offset),
3113                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3114     }
3115
3116     if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
3117         int64_t stime, stime2;
3118         // Correcting starttime based on the enabled streams
3119         // 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.
3120         //       so we instead do it here as part of discontinuity handling
3121         if (   ist->next_dts == AV_NOPTS_VALUE
3122             && ifile->ts_offset == -is->start_time
3123             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
3124             int64_t new_start_time = INT64_MAX;
3125             for (i=0; i<is->nb_streams; i++) {
3126                 AVStream *st = is->streams[i];
3127                 if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
3128                     continue;
3129                 new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
3130             }
3131             if (new_start_time > is->start_time) {
3132                 av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
3133                 ifile->ts_offset = -new_start_time;
3134             }
3135         }
3136
3137         stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
3138         stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
3139         ist->wrap_correction_done = 1;
3140
3141         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
3142             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
3143             ist->wrap_correction_done = 0;
3144         }
3145         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
3146             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
3147             ist->wrap_correction_done = 0;
3148         }
3149     }
3150
3151     if (pkt.dts != AV_NOPTS_VALUE)
3152         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3153     if (pkt.pts != AV_NOPTS_VALUE)
3154         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3155
3156     if (pkt.pts != AV_NOPTS_VALUE)
3157         pkt.pts *= ist->ts_scale;
3158     if (pkt.dts != AV_NOPTS_VALUE)
3159         pkt.dts *= ist->ts_scale;
3160
3161     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts == AV_NOPTS_VALUE && !copy_ts
3162         && (is->iformat->flags & AVFMT_TS_DISCONT) && ifile->last_ts != AV_NOPTS_VALUE) {
3163         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3164         int64_t delta   = pkt_dts - ifile->last_ts;
3165         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3166             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3167                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)){
3168             ifile->ts_offset -= delta;
3169             av_log(NULL, AV_LOG_DEBUG,
3170                    "Inter stream timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3171                    delta, ifile->ts_offset);
3172             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3173             if (pkt.pts != AV_NOPTS_VALUE)
3174                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3175         }
3176     }
3177
3178     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
3179         !copy_ts) {
3180         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3181         int64_t delta   = pkt_dts - ist->next_dts;
3182         if (is->iformat->flags & AVFMT_TS_DISCONT) {
3183         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3184             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3185                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3186             pkt_dts + AV_TIME_BASE/10 < FFMAX(ist->pts, ist->dts)){
3187             ifile->ts_offset -= delta;
3188             av_log(NULL, AV_LOG_DEBUG,
3189                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3190                    delta, ifile->ts_offset);
3191             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3192             if (pkt.pts != AV_NOPTS_VALUE)
3193                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3194         }
3195         } else {
3196             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3197                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
3198                ) {
3199                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3200                 pkt.dts = AV_NOPTS_VALUE;
3201             }
3202             if (pkt.pts != AV_NOPTS_VALUE){
3203                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3204                 delta   = pkt_pts - ist->next_dts;
3205                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3206                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
3207                    ) {
3208                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3209                     pkt.pts = AV_NOPTS_VALUE;
3210                 }
3211             }
3212         }
3213     }
3214
3215     if (pkt.dts != AV_NOPTS_VALUE)
3216         ifile->last_ts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3217
3218     if (debug_ts) {
3219         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",
3220                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
3221                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3222                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3223                av_ts2str(input_files[ist->file_index]->ts_offset),
3224                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3225     }
3226
3227     sub2video_heartbeat(ist, pkt.pts);
3228
3229     ret = output_packet(ist, &pkt);
3230     if (ret < 0) {
3231         char buf[128];
3232         av_strerror(ret, buf, sizeof(buf));
3233         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
3234                 ist->file_index, ist->st->index, buf);
3235         if (exit_on_error)
3236             exit_program(1);
3237     }
3238
3239 discard_packet:
3240     av_free_packet(&pkt);
3241
3242     return 0;
3243 }
3244
3245 /**
3246  * Perform a step of transcoding for the specified filter graph.
3247  *
3248  * @param[in]  graph     filter graph to consider
3249  * @param[out] best_ist  input stream where a frame would allow to continue
3250  * @return  0 for success, <0 for error
3251  */
3252 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
3253 {
3254     int i, ret;
3255     int nb_requests, nb_requests_max = 0;
3256     InputFilter *ifilter;
3257     InputStream *ist;
3258
3259     *best_ist = NULL;
3260     ret = avfilter_graph_request_oldest(graph->graph);
3261     if (ret >= 0)
3262         return reap_filters();
3263
3264     if (ret == AVERROR_EOF) {
3265         ret = reap_filters();
3266         for (i = 0; i < graph->nb_outputs; i++)
3267             close_output_stream(graph->outputs[i]->ost);
3268         return ret;
3269     }
3270     if (ret != AVERROR(EAGAIN))
3271         return ret;
3272
3273     for (i = 0; i < graph->nb_inputs; i++) {
3274         ifilter = graph->inputs[i];
3275         ist = ifilter->ist;
3276         if (input_files[ist->file_index]->eagain ||
3277             input_files[ist->file_index]->eof_reached)
3278             continue;
3279         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
3280         if (nb_requests > nb_requests_max) {
3281             nb_requests_max = nb_requests;
3282             *best_ist = ist;
3283         }
3284     }
3285
3286     if (!*best_ist)
3287         for (i = 0; i < graph->nb_outputs; i++)
3288             graph->outputs[i]->ost->unavailable = 1;
3289
3290     return 0;
3291 }
3292
3293 /**
3294  * Run a single step of transcoding.
3295  *
3296  * @return  0 for success, <0 for error
3297  */
3298 static int transcode_step(void)
3299 {
3300     OutputStream *ost;
3301     InputStream  *ist;
3302     int ret;
3303
3304     ost = choose_output();
3305     if (!ost) {
3306         if (got_eagain()) {
3307             reset_eagain();
3308             av_usleep(10000);
3309             return 0;
3310         }
3311         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
3312         return AVERROR_EOF;
3313     }
3314
3315     if (ost->filter) {
3316         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
3317             return ret;
3318         if (!ist)
3319             return 0;
3320     } else {
3321         av_assert0(ost->source_index >= 0);
3322         ist = input_streams[ost->source_index];
3323     }
3324
3325     ret = process_input(ist->file_index);
3326     if (ret == AVERROR(EAGAIN)) {
3327         if (input_files[ist->file_index]->eagain)
3328             ost->unavailable = 1;
3329         return 0;
3330     }
3331     if (ret < 0)
3332         return ret == AVERROR_EOF ? 0 : ret;
3333
3334     return reap_filters();
3335 }
3336
3337 /*
3338  * The following code is the main loop of the file converter
3339  */
3340 static int transcode(void)
3341 {
3342     int ret, i;
3343     AVFormatContext *os;
3344     OutputStream *ost;
3345     InputStream *ist;
3346     int64_t timer_start;
3347
3348     ret = transcode_init();
3349     if (ret < 0)
3350         goto fail;
3351
3352     if (stdin_interaction) {
3353         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3354     }
3355
3356     timer_start = av_gettime();
3357
3358 #if HAVE_PTHREADS
3359     if ((ret = init_input_threads()) < 0)
3360         goto fail;
3361 #endif
3362
3363     while (!received_sigterm) {
3364         int64_t cur_time= av_gettime();
3365
3366         /* if 'q' pressed, exits */
3367         if (stdin_interaction)
3368             if (check_keyboard_interaction(cur_time) < 0)
3369                 break;
3370
3371         /* check if there's any stream where output is still needed */
3372         if (!need_output()) {
3373             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3374             break;
3375         }
3376
3377         ret = transcode_step();
3378         if (ret < 0) {
3379             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
3380                 continue;
3381
3382             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
3383             break;
3384         }
3385
3386         /* dump report by using the output first video and audio streams */
3387         print_report(0, timer_start, cur_time);
3388     }
3389 #if HAVE_PTHREADS
3390     free_input_threads();
3391 #endif
3392
3393     /* at the end of stream, we must flush the decoder buffers */
3394     for (i = 0; i < nb_input_streams; i++) {
3395         ist = input_streams[i];
3396         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3397             output_packet(ist, NULL);
3398         }
3399     }
3400     flush_encoders();
3401
3402     term_exit();
3403
3404     /* write the trailer if needed and close file */
3405     for (i = 0; i < nb_output_files; i++) {
3406         os = output_files[i]->ctx;
3407         av_write_trailer(os);
3408     }
3409
3410     /* dump report by using the first video and audio streams */
3411     print_report(1, timer_start, av_gettime());
3412
3413     /* close each encoder */
3414     for (i = 0; i < nb_output_streams; i++) {
3415         ost = output_streams[i];
3416         if (ost->encoding_needed) {
3417             av_freep(&ost->st->codec->stats_in);
3418             avcodec_close(ost->st->codec);
3419         }
3420     }
3421
3422     /* close each decoder */
3423     for (i = 0; i < nb_input_streams; i++) {
3424         ist = input_streams[i];
3425         if (ist->decoding_needed) {
3426             avcodec_close(ist->st->codec);
3427             if (ist->hwaccel_uninit)
3428                 ist->hwaccel_uninit(ist->st->codec);
3429         }
3430     }
3431
3432     /* finished ! */
3433     ret = 0;
3434
3435  fail:
3436 #if HAVE_PTHREADS
3437     free_input_threads();
3438 #endif
3439
3440     if (output_streams) {
3441         for (i = 0; i < nb_output_streams; i++) {
3442             ost = output_streams[i];
3443             if (ost) {
3444                 if (ost->stream_copy)
3445                     av_freep(&ost->st->codec->extradata);
3446                 if (ost->logfile) {
3447                     fclose(ost->logfile);
3448                     ost->logfile = NULL;
3449                 }
3450                 av_freep(&ost->st->codec->subtitle_header);
3451                 av_freep(&ost->forced_kf_pts);
3452                 av_freep(&ost->apad);
3453                 av_dict_free(&ost->opts);
3454                 av_dict_free(&ost->swr_opts);
3455                 av_dict_free(&ost->resample_opts);
3456             }
3457         }
3458     }
3459     return ret;
3460 }
3461
3462
3463 static int64_t getutime(void)
3464 {
3465 #if HAVE_GETRUSAGE
3466     struct rusage rusage;
3467
3468     getrusage(RUSAGE_SELF, &rusage);
3469     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3470 #elif HAVE_GETPROCESSTIMES
3471     HANDLE proc;
3472     FILETIME c, e, k, u;
3473     proc = GetCurrentProcess();
3474     GetProcessTimes(proc, &c, &e, &k, &u);
3475     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3476 #else
3477     return av_gettime();
3478 #endif
3479 }
3480
3481 static int64_t getmaxrss(void)
3482 {
3483 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3484     struct rusage rusage;
3485     getrusage(RUSAGE_SELF, &rusage);
3486     return (int64_t)rusage.ru_maxrss * 1024;
3487 #elif HAVE_GETPROCESSMEMORYINFO
3488     HANDLE proc;
3489     PROCESS_MEMORY_COUNTERS memcounters;
3490     proc = GetCurrentProcess();
3491     memcounters.cb = sizeof(memcounters);
3492     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3493     return memcounters.PeakPagefileUsage;
3494 #else
3495     return 0;
3496 #endif
3497 }
3498
3499 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3500 {
3501 }
3502
3503 int main(int argc, char **argv)
3504 {
3505     int ret;
3506     int64_t ti;
3507
3508     register_exit(ffmpeg_cleanup);
3509
3510     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3511
3512     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3513     parse_loglevel(argc, argv, options);
3514
3515     if(argc>1 && !strcmp(argv[1], "-d")){
3516         run_as_daemon=1;
3517         av_log_set_callback(log_callback_null);
3518         argc--;
3519         argv++;
3520     }
3521
3522     avcodec_register_all();
3523 #if CONFIG_AVDEVICE
3524     avdevice_register_all();
3525 #endif
3526     avfilter_register_all();
3527     av_register_all();
3528     avformat_network_init();
3529
3530     show_banner(argc, argv, options);
3531
3532     term_init();
3533
3534     /* parse options and open all input/output files */
3535     ret = ffmpeg_parse_options(argc, argv);
3536     if (ret < 0)
3537         exit_program(1);
3538
3539     if (nb_output_files <= 0 && nb_input_files == 0) {
3540         show_usage();
3541         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3542         exit_program(1);
3543     }
3544
3545     /* file converter / grab */
3546     if (nb_output_files <= 0) {
3547         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3548         exit_program(1);
3549     }
3550
3551 //     if (nb_input_files == 0) {
3552 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3553 //         exit_program(1);
3554 //     }
3555
3556     current_time = ti = getutime();
3557     if (transcode() < 0)
3558         exit_program(1);
3559     ti = getutime() - ti;
3560     if (do_benchmark) {
3561         printf("bench: utime=%0.3fs\n", ti / 1000000.0);
3562     }
3563     av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" frames successfully decoded, %"PRIu64" decoding errors\n",
3564            decode_error_stat[0], decode_error_stat[1]);
3565     if ((decode_error_stat[0] + decode_error_stat[1]) * max_error_rate < decode_error_stat[1])
3566         exit_program(69);
3567
3568     exit_program(received_nb_signals ? 255 : 0);
3569     return 0;
3570 }