lavfi/ebur128: fix typo: s/negociation/negotiation
[ffmpeg.git] / ffmpeg.c
1 /*
2  * Copyright (c) 2000-2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * multimedia converter based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <ctype.h>
28 #include <string.h>
29 #include <math.h>
30 #include <stdlib.h>
31 #include <errno.h>
32 #include <limits.h>
33 #if HAVE_ISATTY
34 #if HAVE_IO_H
35 #include <io.h>
36 #endif
37 #if HAVE_UNISTD_H
38 #include <unistd.h>
39 #endif
40 #endif
41 #include "libavformat/avformat.h"
42 #include "libavdevice/avdevice.h"
43 #include "libswscale/swscale.h"
44 #include "libswresample/swresample.h"
45 #include "libavutil/opt.h"
46 #include "libavutil/channel_layout.h"
47 #include "libavutil/parseutils.h"
48 #include "libavutil/samplefmt.h"
49 #include "libavutil/fifo.h"
50 #include "libavutil/intreadwrite.h"
51 #include "libavutil/dict.h"
52 #include "libavutil/mathematics.h"
53 #include "libavutil/pixdesc.h"
54 #include "libavutil/avstring.h"
55 #include "libavutil/libm.h"
56 #include "libavutil/imgutils.h"
57 #include "libavutil/timestamp.h"
58 #include "libavutil/bprint.h"
59 #include "libavutil/time.h"
60 #include "libavformat/os_support.h"
61
62 #include "libavformat/ffm.h" // not public API
63
64 # include "libavfilter/avcodec.h"
65 # include "libavfilter/avfilter.h"
66 # include "libavfilter/buffersrc.h"
67 # include "libavfilter/buffersink.h"
68
69 #if HAVE_SYS_RESOURCE_H
70 #include <sys/time.h>
71 #include <sys/types.h>
72 #include <sys/resource.h>
73 #elif HAVE_GETPROCESSTIMES
74 #include <windows.h>
75 #endif
76 #if HAVE_GETPROCESSMEMORYINFO
77 #include <windows.h>
78 #include <psapi.h>
79 #endif
80
81 #if HAVE_SYS_SELECT_H
82 #include <sys/select.h>
83 #endif
84
85 #if HAVE_TERMIOS_H
86 #include <fcntl.h>
87 #include <sys/ioctl.h>
88 #include <sys/time.h>
89 #include <termios.h>
90 #elif HAVE_KBHIT
91 #include <conio.h>
92 #endif
93
94 #if HAVE_PTHREADS
95 #include <pthread.h>
96 #endif
97
98 #include <time.h>
99
100 #include "ffmpeg.h"
101 #include "cmdutils.h"
102
103 #include "libavutil/avassert.h"
104
105 const char program_name[] = "ffmpeg";
106 const int program_birth_year = 2000;
107
108 static FILE *vstats_file;
109
110 const char *const forced_keyframes_const_names[] = {
111     "n",
112     "n_forced",
113     "prev_forced_n",
114     "prev_forced_t",
115     "t",
116     NULL
117 };
118
119 static void do_video_stats(OutputStream *ost, int frame_size);
120 static int64_t getutime(void);
121 static int64_t getmaxrss(void);
122
123 static int run_as_daemon  = 0;
124 static int64_t video_size = 0;
125 static int64_t audio_size = 0;
126 static int64_t subtitle_size = 0;
127 static int64_t extra_size = 0;
128 static int nb_frames_dup = 0;
129 static int nb_frames_drop = 0;
130 static int64_t decode_error_stat[2];
131
132 static int current_time;
133 AVIOContext *progress_avio = NULL;
134
135 static uint8_t *subtitle_out;
136
137 #if HAVE_PTHREADS
138 /* signal to input threads that they should exit; set by the main thread */
139 static int transcoding_finished;
140 #endif
141
142 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
143
144 InputStream **input_streams = NULL;
145 int        nb_input_streams = 0;
146 InputFile   **input_files   = NULL;
147 int        nb_input_files   = 0;
148
149 OutputStream **output_streams = NULL;
150 int         nb_output_streams = 0;
151 OutputFile   **output_files   = NULL;
152 int         nb_output_files   = 0;
153
154 FilterGraph **filtergraphs;
155 int        nb_filtergraphs;
156
157 #if HAVE_TERMIOS_H
158
159 /* init terminal so that we can grab keys */
160 static struct termios oldtty;
161 static int restore_tty;
162 #endif
163
164 static void free_input_threads(void);
165
166
167 /* sub2video hack:
168    Convert subtitles to video with alpha to insert them in filter graphs.
169    This is a temporary solution until libavfilter gets real subtitles support.
170  */
171
172 static int sub2video_get_blank_frame(InputStream *ist)
173 {
174     int ret;
175     AVFrame *frame = ist->sub2video.frame;
176
177     av_frame_unref(frame);
178     ist->sub2video.frame->width  = ist->sub2video.w;
179     ist->sub2video.frame->height = ist->sub2video.h;
180     ist->sub2video.frame->format = AV_PIX_FMT_RGB32;
181     if ((ret = av_frame_get_buffer(frame, 32)) < 0)
182         return ret;
183     memset(frame->data[0], 0, frame->height * frame->linesize[0]);
184     return 0;
185 }
186
187 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
188                                 AVSubtitleRect *r)
189 {
190     uint32_t *pal, *dst2;
191     uint8_t *src, *src2;
192     int x, y;
193
194     if (r->type != SUBTITLE_BITMAP) {
195         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
196         return;
197     }
198     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
199         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
200         return;
201     }
202
203     dst += r->y * dst_linesize + r->x * 4;
204     src = r->pict.data[0];
205     pal = (uint32_t *)r->pict.data[1];
206     for (y = 0; y < r->h; y++) {
207         dst2 = (uint32_t *)dst;
208         src2 = src;
209         for (x = 0; x < r->w; x++)
210             *(dst2++) = pal[*(src2++)];
211         dst += dst_linesize;
212         src += r->pict.linesize[0];
213     }
214 }
215
216 static void sub2video_push_ref(InputStream *ist, int64_t pts)
217 {
218     AVFrame *frame = ist->sub2video.frame;
219     int i;
220
221     av_assert1(frame->data[0]);
222     ist->sub2video.last_pts = frame->pts = pts;
223     for (i = 0; i < ist->nb_filters; i++)
224         av_buffersrc_add_frame_flags(ist->filters[i]->filter, frame,
225                                      AV_BUFFERSRC_FLAG_KEEP_REF |
226                                      AV_BUFFERSRC_FLAG_PUSH);
227 }
228
229 static void sub2video_update(InputStream *ist, AVSubtitle *sub)
230 {
231     int w = ist->sub2video.w, h = ist->sub2video.h;
232     AVFrame *frame = ist->sub2video.frame;
233     int8_t *dst;
234     int     dst_linesize;
235     int num_rects, i;
236     int64_t pts, end_pts;
237
238     if (!frame)
239         return;
240     if (sub) {
241         pts       = av_rescale_q(sub->pts + sub->start_display_time * 1000,
242                                  AV_TIME_BASE_Q, ist->st->time_base);
243         end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000,
244                                  AV_TIME_BASE_Q, ist->st->time_base);
245         num_rects = sub->num_rects;
246     } else {
247         pts       = ist->sub2video.end_pts;
248         end_pts   = INT64_MAX;
249         num_rects = 0;
250     }
251     if (sub2video_get_blank_frame(ist) < 0) {
252         av_log(ist->st->codec, AV_LOG_ERROR,
253                "Impossible to get a blank canvas.\n");
254         return;
255     }
256     dst          = frame->data    [0];
257     dst_linesize = frame->linesize[0];
258     for (i = 0; i < num_rects; i++)
259         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
260     sub2video_push_ref(ist, pts);
261     ist->sub2video.end_pts = end_pts;
262 }
263
264 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
265 {
266     InputFile *infile = input_files[ist->file_index];
267     int i, j, nb_reqs;
268     int64_t pts2;
269
270     /* When a frame is read from a file, examine all sub2video streams in
271        the same file and send the sub2video frame again. Otherwise, decoded
272        video frames could be accumulating in the filter graph while a filter
273        (possibly overlay) is desperately waiting for a subtitle frame. */
274     for (i = 0; i < infile->nb_streams; i++) {
275         InputStream *ist2 = input_streams[infile->ist_index + i];
276         if (!ist2->sub2video.frame)
277             continue;
278         /* subtitles seem to be usually muxed ahead of other streams;
279            if not, substracting a larger time here is necessary */
280         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
281         /* do not send the heartbeat frame if the subtitle is already ahead */
282         if (pts2 <= ist2->sub2video.last_pts)
283             continue;
284         if (pts2 >= ist2->sub2video.end_pts || !ist2->sub2video.frame->data[0])
285             sub2video_update(ist2, NULL);
286         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
287             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
288         if (nb_reqs)
289             sub2video_push_ref(ist2, pts2);
290     }
291 }
292
293 static void sub2video_flush(InputStream *ist)
294 {
295     int i;
296
297     for (i = 0; i < ist->nb_filters; i++)
298         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
299 }
300
301 /* end of sub2video hack */
302
303 void term_exit(void)
304 {
305     av_log(NULL, AV_LOG_QUIET, "%s", "");
306 #if HAVE_TERMIOS_H
307     if(restore_tty)
308         tcsetattr (0, TCSANOW, &oldtty);
309 #endif
310 }
311
312 static volatile int received_sigterm = 0;
313 static volatile int received_nb_signals = 0;
314
315 static void
316 sigterm_handler(int sig)
317 {
318     received_sigterm = sig;
319     received_nb_signals++;
320     term_exit();
321     if(received_nb_signals > 3)
322         exit_program(123);
323 }
324
325 void term_init(void)
326 {
327 #if HAVE_TERMIOS_H
328     if(!run_as_daemon){
329         struct termios tty;
330         int istty = 1;
331 #if HAVE_ISATTY
332         istty = isatty(0) && isatty(2);
333 #endif
334         if (istty && tcgetattr (0, &tty) == 0) {
335             oldtty = tty;
336             restore_tty = 1;
337
338             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
339                              |INLCR|IGNCR|ICRNL|IXON);
340             tty.c_oflag |= OPOST;
341             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
342             tty.c_cflag &= ~(CSIZE|PARENB);
343             tty.c_cflag |= CS8;
344             tty.c_cc[VMIN] = 1;
345             tty.c_cc[VTIME] = 0;
346
347             tcsetattr (0, TCSANOW, &tty);
348         }
349         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
350     }
351 #endif
352     avformat_network_deinit();
353
354     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
355     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
356 #ifdef SIGXCPU
357     signal(SIGXCPU, sigterm_handler);
358 #endif
359 }
360
361 /* read a key without blocking */
362 static int read_key(void)
363 {
364     unsigned char ch;
365 #if HAVE_TERMIOS_H
366     int n = 1;
367     struct timeval tv;
368     fd_set rfds;
369
370     FD_ZERO(&rfds);
371     FD_SET(0, &rfds);
372     tv.tv_sec = 0;
373     tv.tv_usec = 0;
374     n = select(1, &rfds, NULL, NULL, &tv);
375     if (n > 0) {
376         n = read(0, &ch, 1);
377         if (n == 1)
378             return ch;
379
380         return n;
381     }
382 #elif HAVE_KBHIT
383 #    if HAVE_PEEKNAMEDPIPE
384     static int is_pipe;
385     static HANDLE input_handle;
386     DWORD dw, nchars;
387     if(!input_handle){
388         input_handle = GetStdHandle(STD_INPUT_HANDLE);
389         is_pipe = !GetConsoleMode(input_handle, &dw);
390     }
391
392     if (stdin->_cnt > 0) {
393         read(0, &ch, 1);
394         return ch;
395     }
396     if (is_pipe) {
397         /* When running under a GUI, you will end here. */
398         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
399             // input pipe may have been closed by the program that ran ffmpeg
400             return -1;
401         }
402         //Read it
403         if(nchars != 0) {
404             read(0, &ch, 1);
405             return ch;
406         }else{
407             return -1;
408         }
409     }
410 #    endif
411     if(kbhit())
412         return(getch());
413 #endif
414     return -1;
415 }
416
417 static int decode_interrupt_cb(void *ctx)
418 {
419     return received_nb_signals > 1;
420 }
421
422 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
423
424 static void ffmpeg_cleanup(int ret)
425 {
426     int i, j;
427
428     if (do_benchmark) {
429         int maxrss = getmaxrss() / 1024;
430         printf("bench: maxrss=%ikB\n", maxrss);
431     }
432
433     for (i = 0; i < nb_filtergraphs; i++) {
434         avfilter_graph_free(&filtergraphs[i]->graph);
435         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
436             av_freep(&filtergraphs[i]->inputs[j]->name);
437             av_freep(&filtergraphs[i]->inputs[j]);
438         }
439         av_freep(&filtergraphs[i]->inputs);
440         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
441             av_freep(&filtergraphs[i]->outputs[j]->name);
442             av_freep(&filtergraphs[i]->outputs[j]);
443         }
444         av_freep(&filtergraphs[i]->outputs);
445         av_freep(&filtergraphs[i]->graph_desc);
446         av_freep(&filtergraphs[i]);
447     }
448     av_freep(&filtergraphs);
449
450     av_freep(&subtitle_out);
451
452     /* close files */
453     for (i = 0; i < nb_output_files; i++) {
454         AVFormatContext *s = output_files[i]->ctx;
455         if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE) && s->pb)
456             avio_close(s->pb);
457         avformat_free_context(s);
458         av_dict_free(&output_files[i]->opts);
459         av_freep(&output_files[i]);
460     }
461     for (i = 0; i < nb_output_streams; i++) {
462         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
463         while (bsfc) {
464             AVBitStreamFilterContext *next = bsfc->next;
465             av_bitstream_filter_close(bsfc);
466             bsfc = next;
467         }
468         output_streams[i]->bitstream_filters = NULL;
469         avcodec_free_frame(&output_streams[i]->filtered_frame);
470
471         av_freep(&output_streams[i]->forced_keyframes);
472         av_expr_free(output_streams[i]->forced_keyframes_pexpr);
473         av_freep(&output_streams[i]->avfilter);
474         av_freep(&output_streams[i]->logfile_prefix);
475         av_freep(&output_streams[i]);
476     }
477 #if HAVE_PTHREADS
478     free_input_threads();
479 #endif
480     for (i = 0; i < nb_input_files; i++) {
481         avformat_close_input(&input_files[i]->ctx);
482         av_freep(&input_files[i]);
483     }
484     for (i = 0; i < nb_input_streams; i++) {
485         av_frame_free(&input_streams[i]->decoded_frame);
486         av_frame_free(&input_streams[i]->filter_frame);
487         av_dict_free(&input_streams[i]->opts);
488         avsubtitle_free(&input_streams[i]->prev_sub.subtitle);
489         av_frame_free(&input_streams[i]->sub2video.frame);
490         av_freep(&input_streams[i]->filters);
491         av_freep(&input_streams[i]);
492     }
493
494     if (vstats_file)
495         fclose(vstats_file);
496     av_free(vstats_filename);
497
498     av_freep(&input_streams);
499     av_freep(&input_files);
500     av_freep(&output_streams);
501     av_freep(&output_files);
502
503     uninit_opts();
504
505     avformat_network_deinit();
506
507     if (received_sigterm) {
508         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
509                (int) received_sigterm);
510     }
511     term_exit();
512 }
513
514 void assert_avoptions(AVDictionary *m)
515 {
516     AVDictionaryEntry *t;
517     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
518         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
519         exit_program(1);
520     }
521 }
522
523 static void abort_codec_experimental(AVCodec *c, int encoder)
524 {
525     exit_program(1);
526 }
527
528 static void update_benchmark(const char *fmt, ...)
529 {
530     if (do_benchmark_all) {
531         int64_t t = getutime();
532         va_list va;
533         char buf[1024];
534
535         if (fmt) {
536             va_start(va, fmt);
537             vsnprintf(buf, sizeof(buf), fmt, va);
538             va_end(va);
539             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
540         }
541         current_time = t;
542     }
543 }
544
545 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
546 {
547     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
548     AVCodecContext          *avctx = ost->st->codec;
549     int ret;
550
551     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
552         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
553         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
554
555     /*
556      * Audio encoders may split the packets --  #frames in != #packets out.
557      * But there is no reordering, so we can limit the number of output packets
558      * by simply dropping them here.
559      * Counting encoded video frames needs to be done separately because of
560      * reordering, see do_video_out()
561      */
562     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
563         if (ost->frame_number >= ost->max_frames) {
564             av_free_packet(pkt);
565             return;
566         }
567         ost->frame_number++;
568     }
569
570     while (bsfc) {
571         AVPacket new_pkt = *pkt;
572         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
573                                            &new_pkt.data, &new_pkt.size,
574                                            pkt->data, pkt->size,
575                                            pkt->flags & AV_PKT_FLAG_KEY);
576         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
577             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
578             if(t) {
579                 memcpy(t, new_pkt.data, new_pkt.size);
580                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
581                 new_pkt.data = t;
582                 new_pkt.buf = NULL;
583                 a = 1;
584             } else
585                 a = AVERROR(ENOMEM);
586         }
587         if (a > 0) {
588             av_free_packet(pkt);
589             new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
590                                            av_buffer_default_free, NULL, 0);
591             if (!new_pkt.buf)
592                 exit_program(1);
593         } else if (a < 0) {
594             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
595                    bsfc->filter->name, pkt->stream_index,
596                    avctx->codec ? avctx->codec->name : "copy");
597             print_error("", a);
598             if (exit_on_error)
599                 exit_program(1);
600         }
601         *pkt = new_pkt;
602
603         bsfc = bsfc->next;
604     }
605
606     if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS) &&
607         (avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) &&
608         pkt->dts != AV_NOPTS_VALUE &&
609         ost->last_mux_dts != AV_NOPTS_VALUE) {
610       int64_t max = ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
611       if (pkt->dts < max) {
612         int loglevel = max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG;
613         av_log(s, loglevel, "Non-monotonous DTS in output stream "
614                "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
615                ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
616         if (exit_on_error) {
617             av_log(NULL, AV_LOG_FATAL, "aborting.\n");
618             exit_program(1);
619         }
620         av_log(s, loglevel, "changing to %"PRId64". This may result "
621                "in incorrect timestamps in the output file.\n",
622                max);
623         if(pkt->pts >= pkt->dts)
624             pkt->pts = FFMAX(pkt->pts, max);
625         pkt->dts = max;
626       }
627     }
628     ost->last_mux_dts = pkt->dts;
629
630     pkt->stream_index = ost->index;
631
632     if (debug_ts) {
633         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
634                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
635                 av_get_media_type_string(ost->st->codec->codec_type),
636                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
637                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
638                 pkt->size
639               );
640     }
641
642     ret = av_interleaved_write_frame(s, pkt);
643     if (ret < 0) {
644         print_error("av_interleaved_write_frame()", ret);
645         exit_program(1);
646     }
647 }
648
649 static void close_output_stream(OutputStream *ost)
650 {
651     OutputFile *of = output_files[ost->file_index];
652
653     ost->finished = 1;
654     if (of->shortest) {
655         int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, AV_TIME_BASE_Q);
656         of->recording_time = FFMIN(of->recording_time, end);
657     }
658 }
659
660 static int check_recording_time(OutputStream *ost)
661 {
662     OutputFile *of = output_files[ost->file_index];
663
664     if (of->recording_time != INT64_MAX &&
665         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
666                       AV_TIME_BASE_Q) >= 0) {
667         close_output_stream(ost);
668         return 0;
669     }
670     return 1;
671 }
672
673 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
674                          AVFrame *frame)
675 {
676     AVCodecContext *enc = ost->st->codec;
677     AVPacket pkt;
678     int got_packet = 0;
679
680     av_init_packet(&pkt);
681     pkt.data = NULL;
682     pkt.size = 0;
683
684     if (!check_recording_time(ost))
685         return;
686
687     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
688         frame->pts = ost->sync_opts;
689     ost->sync_opts = frame->pts + frame->nb_samples;
690
691     av_assert0(pkt.size || !pkt.data);
692     update_benchmark(NULL);
693     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
694         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
695         exit_program(1);
696     }
697     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
698
699     if (got_packet) {
700         if (pkt.pts != AV_NOPTS_VALUE)
701             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
702         if (pkt.dts != AV_NOPTS_VALUE)
703             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
704         if (pkt.duration > 0)
705             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
706
707         if (debug_ts) {
708             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
709                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
710                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
711                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
712         }
713
714         audio_size += pkt.size;
715         write_frame(s, &pkt, ost);
716
717         av_free_packet(&pkt);
718     }
719 }
720
721 static void do_subtitle_out(AVFormatContext *s,
722                             OutputStream *ost,
723                             InputStream *ist,
724                             AVSubtitle *sub)
725 {
726     int subtitle_out_max_size = 1024 * 1024;
727     int subtitle_out_size, nb, i;
728     AVCodecContext *enc;
729     AVPacket pkt;
730     int64_t pts;
731
732     if (sub->pts == AV_NOPTS_VALUE) {
733         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
734         if (exit_on_error)
735             exit_program(1);
736         return;
737     }
738
739     enc = ost->st->codec;
740
741     if (!subtitle_out) {
742         subtitle_out = av_malloc(subtitle_out_max_size);
743     }
744
745     /* Note: DVB subtitle need one packet to draw them and one other
746        packet to clear them */
747     /* XXX: signal it in the codec context ? */
748     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
749         nb = 2;
750     else
751         nb = 1;
752
753     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
754     pts = sub->pts;
755     if (output_files[ost->file_index]->start_time != AV_NOPTS_VALUE)
756         pts -= output_files[ost->file_index]->start_time;
757     for (i = 0; i < nb; i++) {
758         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
759         if (!check_recording_time(ost))
760             return;
761
762         sub->pts = pts;
763         // start_display_time is required to be 0
764         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
765         sub->end_display_time  -= sub->start_display_time;
766         sub->start_display_time = 0;
767         if (i == 1)
768             sub->num_rects = 0;
769         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
770                                                     subtitle_out_max_size, sub);
771         if (subtitle_out_size < 0) {
772             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
773             exit_program(1);
774         }
775
776         av_init_packet(&pkt);
777         pkt.data = subtitle_out;
778         pkt.size = subtitle_out_size;
779         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
780         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
781         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
782             /* XXX: the pts correction is handled here. Maybe handling
783                it in the codec would be better */
784             if (i == 0)
785                 pkt.pts += 90 * sub->start_display_time;
786             else
787                 pkt.pts += 90 * sub->end_display_time;
788         }
789         subtitle_size += pkt.size;
790         write_frame(s, &pkt, ost);
791     }
792 }
793
794 static void do_video_out(AVFormatContext *s,
795                          OutputStream *ost,
796                          AVFrame *in_picture)
797 {
798     int ret, format_video_sync;
799     AVPacket pkt;
800     AVCodecContext *enc = ost->st->codec;
801     int nb_frames, i;
802     double sync_ipts, delta;
803     double duration = 0;
804     int frame_size = 0;
805     InputStream *ist = NULL;
806
807     if (ost->source_index >= 0)
808         ist = input_streams[ost->source_index];
809
810     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
811         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
812
813     sync_ipts = in_picture->pts;
814     delta = sync_ipts - ost->sync_opts + duration;
815
816     /* by default, we output a single frame */
817     nb_frames = 1;
818
819     format_video_sync = video_sync_method;
820     if (format_video_sync == VSYNC_AUTO)
821         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
822
823     switch (format_video_sync) {
824     case VSYNC_CFR:
825         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
826         if (delta < -1.1)
827             nb_frames = 0;
828         else if (delta > 1.1)
829             nb_frames = lrintf(delta);
830         break;
831     case VSYNC_VFR:
832         if (delta <= -0.6)
833             nb_frames = 0;
834         else if (delta > 0.6)
835             ost->sync_opts = lrint(sync_ipts);
836         break;
837     case VSYNC_DROP:
838     case VSYNC_PASSTHROUGH:
839         ost->sync_opts = lrint(sync_ipts);
840         break;
841     default:
842         av_assert0(0);
843     }
844
845     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
846     if (nb_frames == 0) {
847         nb_frames_drop++;
848         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
849         return;
850     } else if (nb_frames > 1) {
851         if (nb_frames > dts_error_threshold * 30) {
852             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
853             nb_frames_drop++;
854             return;
855         }
856         nb_frames_dup += nb_frames - 1;
857         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
858     }
859
860   /* duplicates frame if needed */
861   for (i = 0; i < nb_frames; i++) {
862     av_init_packet(&pkt);
863     pkt.data = NULL;
864     pkt.size = 0;
865
866     in_picture->pts = ost->sync_opts;
867
868 #if 1
869     if (!check_recording_time(ost))
870 #else
871     if (ost->frame_number >= ost->max_frames)
872 #endif
873         return;
874
875     if (s->oformat->flags & AVFMT_RAWPICTURE &&
876         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
877         /* raw pictures are written as AVPicture structure to
878            avoid any copies. We support temporarily the older
879            method. */
880         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
881         enc->coded_frame->top_field_first  = in_picture->top_field_first;
882         if (enc->coded_frame->interlaced_frame)
883             enc->field_order = enc->coded_frame->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
884         else
885             enc->field_order = AV_FIELD_PROGRESSIVE;
886         pkt.data   = (uint8_t *)in_picture;
887         pkt.size   =  sizeof(AVPicture);
888         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
889         pkt.flags |= AV_PKT_FLAG_KEY;
890
891         video_size += pkt.size;
892         write_frame(s, &pkt, ost);
893     } else {
894         int got_packet, forced_keyframe = 0;
895         double pts_time;
896
897         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME) &&
898             ost->top_field_first >= 0)
899             in_picture->top_field_first = !!ost->top_field_first;
900
901         if (in_picture->interlaced_frame) {
902             if (enc->codec->id == AV_CODEC_ID_MJPEG)
903                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
904             else
905                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
906         } else
907             enc->field_order = AV_FIELD_PROGRESSIVE;
908
909         in_picture->quality = ost->st->codec->global_quality;
910         if (!enc->me_threshold)
911             in_picture->pict_type = 0;
912
913         pts_time = in_picture->pts != AV_NOPTS_VALUE ?
914             in_picture->pts * av_q2d(enc->time_base) : NAN;
915         if (ost->forced_kf_index < ost->forced_kf_count &&
916             in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
917             ost->forced_kf_index++;
918             forced_keyframe = 1;
919         } else if (ost->forced_keyframes_pexpr) {
920             double res;
921             ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
922             res = av_expr_eval(ost->forced_keyframes_pexpr,
923                                ost->forced_keyframes_expr_const_values, NULL);
924             av_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
925                     ost->forced_keyframes_expr_const_values[FKF_N],
926                     ost->forced_keyframes_expr_const_values[FKF_N_FORCED],
927                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N],
928                     ost->forced_keyframes_expr_const_values[FKF_T],
929                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T],
930                     res);
931             if (res) {
932                 forced_keyframe = 1;
933                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] =
934                     ost->forced_keyframes_expr_const_values[FKF_N];
935                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] =
936                     ost->forced_keyframes_expr_const_values[FKF_T];
937                 ost->forced_keyframes_expr_const_values[FKF_N_FORCED] += 1;
938             }
939
940             ost->forced_keyframes_expr_const_values[FKF_N] += 1;
941         }
942         if (forced_keyframe) {
943             in_picture->pict_type = AV_PICTURE_TYPE_I;
944             av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
945         }
946
947         update_benchmark(NULL);
948         ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
949         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
950         if (ret < 0) {
951             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
952             exit_program(1);
953         }
954
955         if (got_packet) {
956             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
957                 pkt.pts = ost->sync_opts;
958
959             if (pkt.pts != AV_NOPTS_VALUE)
960                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
961             if (pkt.dts != AV_NOPTS_VALUE)
962                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
963
964             if (debug_ts) {
965                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
966                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
967                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
968                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
969             }
970
971             frame_size = pkt.size;
972             video_size += pkt.size;
973             write_frame(s, &pkt, ost);
974             av_free_packet(&pkt);
975
976             /* if two pass, output log */
977             if (ost->logfile && enc->stats_out) {
978                 fprintf(ost->logfile, "%s", enc->stats_out);
979             }
980         }
981     }
982     ost->sync_opts++;
983     /*
984      * For video, number of frames in == number of packets out.
985      * But there may be reordering, so we can't throw away frames on encoder
986      * flush, we need to limit them here, before they go into encoder.
987      */
988     ost->frame_number++;
989
990     if (vstats_filename && frame_size)
991         do_video_stats(ost, frame_size);
992   }
993 }
994
995 static double psnr(double d)
996 {
997     return -10.0 * log(d) / log(10.0);
998 }
999
1000 static void do_video_stats(OutputStream *ost, int frame_size)
1001 {
1002     AVCodecContext *enc;
1003     int frame_number;
1004     double ti1, bitrate, avg_bitrate;
1005
1006     /* this is executed just the first time do_video_stats is called */
1007     if (!vstats_file) {
1008         vstats_file = fopen(vstats_filename, "w");
1009         if (!vstats_file) {
1010             perror("fopen");
1011             exit_program(1);
1012         }
1013     }
1014
1015     enc = ost->st->codec;
1016     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1017         frame_number = ost->st->nb_frames;
1018         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1019         if (enc->flags&CODEC_FLAG_PSNR)
1020             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1021
1022         fprintf(vstats_file,"f_size= %6d ", frame_size);
1023         /* compute pts value */
1024         ti1 = ost->st->pts.val * av_q2d(enc->time_base);
1025         if (ti1 < 0.01)
1026             ti1 = 0.01;
1027
1028         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1029         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1030         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1031                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1032         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1033     }
1034 }
1035
1036 /**
1037  * Get and encode new output from any of the filtergraphs, without causing
1038  * activity.
1039  *
1040  * @return  0 for success, <0 for severe errors
1041  */
1042 static int reap_filters(void)
1043 {
1044     AVFrame *filtered_frame = NULL;
1045     int i;
1046     int64_t frame_pts;
1047
1048     /* Reap all buffers present in the buffer sinks */
1049     for (i = 0; i < nb_output_streams; i++) {
1050         OutputStream *ost = output_streams[i];
1051         OutputFile    *of = output_files[ost->file_index];
1052         int ret = 0;
1053
1054         if (!ost->filter)
1055             continue;
1056
1057         if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1058             return AVERROR(ENOMEM);
1059         } else
1060             avcodec_get_frame_defaults(ost->filtered_frame);
1061         filtered_frame = ost->filtered_frame;
1062
1063         while (1) {
1064             ret = av_buffersink_get_frame_flags(ost->filter->filter, filtered_frame,
1065                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1066             if (ret < 0) {
1067                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1068                     av_log(NULL, AV_LOG_WARNING,
1069                            "Error in av_buffersink_get_frame_flags(): %s\n", av_err2str(ret));
1070                 }
1071                 break;
1072             }
1073             frame_pts = AV_NOPTS_VALUE;
1074             if (filtered_frame->pts != AV_NOPTS_VALUE) {
1075                 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1076                 filtered_frame->pts = frame_pts = av_rescale_q(filtered_frame->pts,
1077                                                 ost->filter->filter->inputs[0]->time_base,
1078                                                 ost->st->codec->time_base) -
1079                                     av_rescale_q(start_time,
1080                                                 AV_TIME_BASE_Q,
1081                                                 ost->st->codec->time_base);
1082             }
1083             //if (ost->source_index >= 0)
1084             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1085
1086
1087             switch (ost->filter->filter->inputs[0]->type) {
1088             case AVMEDIA_TYPE_VIDEO:
1089                 filtered_frame->pts = frame_pts;
1090                 if (!ost->frame_aspect_ratio.num)
1091                     ost->st->codec->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
1092
1093                 do_video_out(of->ctx, ost, filtered_frame);
1094                 break;
1095             case AVMEDIA_TYPE_AUDIO:
1096                 filtered_frame->pts = frame_pts;
1097                 if (!(ost->st->codec->codec->capabilities & CODEC_CAP_PARAM_CHANGE) &&
1098                     ost->st->codec->channels != av_frame_get_channels(filtered_frame)) {
1099                     av_log(NULL, AV_LOG_ERROR,
1100                            "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
1101                     break;
1102                 }
1103                 do_audio_out(of->ctx, ost, filtered_frame);
1104                 break;
1105             default:
1106                 // TODO support subtitle filters
1107                 av_assert0(0);
1108             }
1109
1110             av_frame_unref(filtered_frame);
1111         }
1112     }
1113
1114     return 0;
1115 }
1116
1117 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1118 {
1119     char buf[1024];
1120     AVBPrint buf_script;
1121     OutputStream *ost;
1122     AVFormatContext *oc;
1123     int64_t total_size;
1124     AVCodecContext *enc;
1125     int frame_number, vid, i;
1126     double bitrate;
1127     int64_t pts = INT64_MIN;
1128     static int64_t last_time = -1;
1129     static int qp_histogram[52];
1130     int hours, mins, secs, us;
1131
1132     if (!print_stats && !is_last_report && !progress_avio)
1133         return;
1134
1135     if (!is_last_report) {
1136         if (last_time == -1) {
1137             last_time = cur_time;
1138             return;
1139         }
1140         if ((cur_time - last_time) < 500000)
1141             return;
1142         last_time = cur_time;
1143     }
1144
1145
1146     oc = output_files[0]->ctx;
1147
1148     total_size = avio_size(oc->pb);
1149     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1150         total_size = avio_tell(oc->pb);
1151
1152     buf[0] = '\0';
1153     vid = 0;
1154     av_bprint_init(&buf_script, 0, 1);
1155     for (i = 0; i < nb_output_streams; i++) {
1156         float q = -1;
1157         ost = output_streams[i];
1158         enc = ost->st->codec;
1159         if (!ost->stream_copy && enc->coded_frame)
1160             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1161         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1162             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1163             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1164                        ost->file_index, ost->index, q);
1165         }
1166         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1167             float fps, t = (cur_time-timer_start) / 1000000.0;
1168
1169             frame_number = ost->frame_number;
1170             fps = t > 1 ? frame_number / t : 0;
1171             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1172                      frame_number, fps < 9.95, fps, q);
1173             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1174             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1175             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1176                        ost->file_index, ost->index, q);
1177             if (is_last_report)
1178                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1179             if (qp_hist) {
1180                 int j;
1181                 int qp = lrintf(q);
1182                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1183                     qp_histogram[qp]++;
1184                 for (j = 0; j < 32; j++)
1185                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1186             }
1187             if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1188                 int j;
1189                 double error, error_sum = 0;
1190                 double scale, scale_sum = 0;
1191                 double p;
1192                 char type[3] = { 'Y','U','V' };
1193                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1194                 for (j = 0; j < 3; j++) {
1195                     if (is_last_report) {
1196                         error = enc->error[j];
1197                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1198                     } else {
1199                         error = enc->coded_frame->error[j];
1200                         scale = enc->width * enc->height * 255.0 * 255.0;
1201                     }
1202                     if (j)
1203                         scale /= 4;
1204                     error_sum += error;
1205                     scale_sum += scale;
1206                     p = psnr(error / scale);
1207                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1208                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1209                                ost->file_index, ost->index, type[j] | 32, p);
1210                 }
1211                 p = psnr(error_sum / scale_sum);
1212                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1213                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1214                            ost->file_index, ost->index, p);
1215             }
1216             vid = 1;
1217         }
1218         /* compute min output value */
1219         if ((is_last_report || !ost->finished) && ost->st->pts.val != AV_NOPTS_VALUE)
1220             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1221                                           ost->st->time_base, AV_TIME_BASE_Q));
1222     }
1223
1224     secs = pts / AV_TIME_BASE;
1225     us = pts % AV_TIME_BASE;
1226     mins = secs / 60;
1227     secs %= 60;
1228     hours = mins / 60;
1229     mins %= 60;
1230
1231     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1232
1233     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1234                                  "size=N/A time=");
1235     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1236                                  "size=%8.0fkB time=", total_size / 1024.0);
1237     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1238              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1239              (100 * us) / AV_TIME_BASE);
1240     if (bitrate < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1241                               "bitrate=N/A");
1242     else             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1243                               "bitrate=%6.1fkbits/s", bitrate);
1244     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
1245     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1246     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1247     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1248                hours, mins, secs, us);
1249
1250     if (nb_frames_dup || nb_frames_drop)
1251         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1252                 nb_frames_dup, nb_frames_drop);
1253     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1254     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1255
1256     if (print_stats || is_last_report) {
1257         if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
1258             fprintf(stderr, "%s    \r", buf);
1259         } else
1260             av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1261
1262     fflush(stderr);
1263     }
1264
1265     if (progress_avio) {
1266         av_bprintf(&buf_script, "progress=%s\n",
1267                    is_last_report ? "end" : "continue");
1268         avio_write(progress_avio, buf_script.str,
1269                    FFMIN(buf_script.len, buf_script.size - 1));
1270         avio_flush(progress_avio);
1271         av_bprint_finalize(&buf_script, NULL);
1272         if (is_last_report) {
1273             avio_close(progress_avio);
1274             progress_avio = NULL;
1275         }
1276     }
1277
1278     if (is_last_report) {
1279         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1280         av_log(NULL, AV_LOG_INFO, "\n");
1281         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1282                video_size / 1024.0,
1283                audio_size / 1024.0,
1284                subtitle_size / 1024.0,
1285                extra_size / 1024.0,
1286                100.0 * (total_size - raw) / raw
1287         );
1288         if(video_size + audio_size + subtitle_size + extra_size == 0){
1289             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1290         }
1291     }
1292 }
1293
1294 static void flush_encoders(void)
1295 {
1296     int i, ret;
1297
1298     for (i = 0; i < nb_output_streams; i++) {
1299         OutputStream   *ost = output_streams[i];
1300         AVCodecContext *enc = ost->st->codec;
1301         AVFormatContext *os = output_files[ost->file_index]->ctx;
1302         int stop_encoding = 0;
1303
1304         if (!ost->encoding_needed)
1305             continue;
1306
1307         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1308             continue;
1309         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1310             continue;
1311
1312         for (;;) {
1313             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1314             const char *desc;
1315             int64_t *size;
1316
1317             switch (ost->st->codec->codec_type) {
1318             case AVMEDIA_TYPE_AUDIO:
1319                 encode = avcodec_encode_audio2;
1320                 desc   = "Audio";
1321                 size   = &audio_size;
1322                 break;
1323             case AVMEDIA_TYPE_VIDEO:
1324                 encode = avcodec_encode_video2;
1325                 desc   = "Video";
1326                 size   = &video_size;
1327                 break;
1328             default:
1329                 stop_encoding = 1;
1330             }
1331
1332             if (encode) {
1333                 AVPacket pkt;
1334                 int got_packet;
1335                 av_init_packet(&pkt);
1336                 pkt.data = NULL;
1337                 pkt.size = 0;
1338
1339                 update_benchmark(NULL);
1340                 ret = encode(enc, &pkt, NULL, &got_packet);
1341                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1342                 if (ret < 0) {
1343                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1344                     exit_program(1);
1345                 }
1346                 *size += pkt.size;
1347                 if (ost->logfile && enc->stats_out) {
1348                     fprintf(ost->logfile, "%s", enc->stats_out);
1349                 }
1350                 if (!got_packet) {
1351                     stop_encoding = 1;
1352                     break;
1353                 }
1354                 if (pkt.pts != AV_NOPTS_VALUE)
1355                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1356                 if (pkt.dts != AV_NOPTS_VALUE)
1357                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1358                 if (pkt.duration > 0)
1359                     pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1360                 write_frame(os, &pkt, ost);
1361                 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
1362                     do_video_stats(ost, pkt.size);
1363                 }
1364             }
1365
1366             if (stop_encoding)
1367                 break;
1368         }
1369     }
1370 }
1371
1372 /*
1373  * Check whether a packet from ist should be written into ost at this time
1374  */
1375 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1376 {
1377     OutputFile *of = output_files[ost->file_index];
1378     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1379
1380     if (ost->source_index != ist_index)
1381         return 0;
1382
1383     if (of->start_time != AV_NOPTS_VALUE && ist->pts < of->start_time)
1384         return 0;
1385
1386     return 1;
1387 }
1388
1389 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1390 {
1391     OutputFile *of = output_files[ost->file_index];
1392     InputFile   *f = input_files [ist->file_index];
1393     int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1394     int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1395     int64_t ist_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ist->st->time_base);
1396     AVPicture pict;
1397     AVPacket opkt;
1398
1399     av_init_packet(&opkt);
1400
1401     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1402         !ost->copy_initial_nonkeyframes)
1403         return;
1404
1405     if (pkt->pts == AV_NOPTS_VALUE) {
1406         if (!ost->frame_number && ist->pts < start_time &&
1407             !ost->copy_prior_start)
1408             return;
1409     } else {
1410         if (!ost->frame_number && pkt->pts < ist_tb_start_time &&
1411             !ost->copy_prior_start)
1412             return;
1413     }
1414
1415     if (of->recording_time != INT64_MAX &&
1416         ist->pts >= of->recording_time + start_time) {
1417         close_output_stream(ost);
1418         return;
1419     }
1420
1421     if (f->recording_time != INT64_MAX) {
1422         start_time = f->ctx->start_time;
1423         if (f->start_time != AV_NOPTS_VALUE)
1424             start_time += f->start_time;
1425         if (ist->pts >= f->recording_time + start_time) {
1426             close_output_stream(ost);
1427             return;
1428         }
1429     }
1430
1431     /* force the input stream PTS */
1432     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1433         audio_size += pkt->size;
1434     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1435         video_size += pkt->size;
1436         ost->sync_opts++;
1437     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1438         subtitle_size += pkt->size;
1439     }
1440
1441     if (pkt->pts != AV_NOPTS_VALUE)
1442         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1443     else
1444         opkt.pts = AV_NOPTS_VALUE;
1445
1446     if (pkt->dts == AV_NOPTS_VALUE)
1447         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1448     else
1449         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1450     opkt.dts -= ost_tb_start_time;
1451
1452     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1453         int duration = av_get_audio_frame_duration(ist->st->codec, pkt->size);
1454         if(!duration)
1455             duration = ist->st->codec->frame_size;
1456         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1457                                                (AVRational){1, ist->st->codec->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
1458                                                ost->st->time_base) - ost_tb_start_time;
1459     }
1460
1461     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1462     opkt.flags    = pkt->flags;
1463
1464     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1465     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1466        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1467        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1468        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1469        ) {
1470         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY)) {
1471             opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1472             if (!opkt.buf)
1473                 exit_program(1);
1474         }
1475     } else {
1476         opkt.data = pkt->data;
1477         opkt.size = pkt->size;
1478     }
1479
1480     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1481         /* store AVPicture in AVPacket, as expected by the output format */
1482         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1483         opkt.data = (uint8_t *)&pict;
1484         opkt.size = sizeof(AVPicture);
1485         opkt.flags |= AV_PKT_FLAG_KEY;
1486     }
1487
1488     write_frame(of->ctx, &opkt, ost);
1489     ost->st->codec->frame_number++;
1490 }
1491
1492 int guess_input_channel_layout(InputStream *ist)
1493 {
1494     AVCodecContext *dec = ist->st->codec;
1495
1496     if (!dec->channel_layout) {
1497         char layout_name[256];
1498
1499         if (dec->channels > ist->guess_layout_max)
1500             return 0;
1501         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1502         if (!dec->channel_layout)
1503             return 0;
1504         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1505                                      dec->channels, dec->channel_layout);
1506         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1507                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1508     }
1509     return 1;
1510 }
1511
1512 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1513 {
1514     AVFrame *decoded_frame, *f;
1515     AVCodecContext *avctx = ist->st->codec;
1516     int i, ret, err = 0, resample_changed;
1517     AVRational decoded_frame_tb;
1518
1519     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1520         return AVERROR(ENOMEM);
1521     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1522         return AVERROR(ENOMEM);
1523     decoded_frame = ist->decoded_frame;
1524
1525     update_benchmark(NULL);
1526     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1527     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1528
1529     if (ret >= 0 && avctx->sample_rate <= 0) {
1530         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1531         ret = AVERROR_INVALIDDATA;
1532     }
1533
1534     if (*got_output || ret<0 || pkt->size)
1535         decode_error_stat[ret<0] ++;
1536
1537     if (!*got_output || ret < 0) {
1538         if (!pkt->size) {
1539             for (i = 0; i < ist->nb_filters; i++)
1540 #if 1
1541                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1542 #else
1543                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1544 #endif
1545         }
1546         return ret;
1547     }
1548
1549 #if 1
1550     /* increment next_dts to use for the case where the input stream does not
1551        have timestamps or there are multiple frames in the packet */
1552     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1553                      avctx->sample_rate;
1554     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1555                      avctx->sample_rate;
1556 #endif
1557
1558     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1559                        ist->resample_channels       != avctx->channels               ||
1560                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1561                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1562     if (resample_changed) {
1563         char layout1[64], layout2[64];
1564
1565         if (!guess_input_channel_layout(ist)) {
1566             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1567                    "layout for Input Stream #%d.%d\n", ist->file_index,
1568                    ist->st->index);
1569             exit_program(1);
1570         }
1571         decoded_frame->channel_layout = avctx->channel_layout;
1572
1573         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1574                                      ist->resample_channel_layout);
1575         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1576                                      decoded_frame->channel_layout);
1577
1578         av_log(NULL, AV_LOG_INFO,
1579                "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",
1580                ist->file_index, ist->st->index,
1581                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1582                ist->resample_channels, layout1,
1583                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1584                avctx->channels, layout2);
1585
1586         ist->resample_sample_fmt     = decoded_frame->format;
1587         ist->resample_sample_rate    = decoded_frame->sample_rate;
1588         ist->resample_channel_layout = decoded_frame->channel_layout;
1589         ist->resample_channels       = avctx->channels;
1590
1591         for (i = 0; i < nb_filtergraphs; i++)
1592             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1593                 FilterGraph *fg = filtergraphs[i];
1594                 int j;
1595                 if (configure_filtergraph(fg) < 0) {
1596                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1597                     exit_program(1);
1598                 }
1599                 for (j = 0; j < fg->nb_outputs; j++) {
1600                     OutputStream *ost = fg->outputs[j]->ost;
1601                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1602                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1603                         av_buffersink_set_frame_size(ost->filter->filter,
1604                                                      ost->st->codec->frame_size);
1605                 }
1606             }
1607     }
1608
1609     /* if the decoder provides a pts, use it instead of the last packet pts.
1610        the decoder could be delaying output by a packet or more. */
1611     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1612         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1613         decoded_frame_tb   = avctx->time_base;
1614     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1615         decoded_frame->pts = decoded_frame->pkt_pts;
1616         pkt->pts           = AV_NOPTS_VALUE;
1617         decoded_frame_tb   = ist->st->time_base;
1618     } else if (pkt->pts != AV_NOPTS_VALUE) {
1619         decoded_frame->pts = pkt->pts;
1620         pkt->pts           = AV_NOPTS_VALUE;
1621         decoded_frame_tb   = ist->st->time_base;
1622     }else {
1623         decoded_frame->pts = ist->dts;
1624         decoded_frame_tb   = AV_TIME_BASE_Q;
1625     }
1626     if (decoded_frame->pts != AV_NOPTS_VALUE)
1627         decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
1628                                               (AVRational){1, ist->st->codec->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
1629                                               (AVRational){1, ist->st->codec->sample_rate});
1630     for (i = 0; i < ist->nb_filters; i++) {
1631         if (i < ist->nb_filters - 1) {
1632             f = ist->filter_frame;
1633             err = av_frame_ref(f, decoded_frame);
1634             if (err < 0)
1635                 break;
1636         } else
1637             f = decoded_frame;
1638         err = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f,
1639                                      AV_BUFFERSRC_FLAG_PUSH);
1640         if (err == AVERROR_EOF)
1641             err = 0; /* ignore */
1642         if (err < 0)
1643             break;
1644     }
1645     decoded_frame->pts = AV_NOPTS_VALUE;
1646
1647     av_frame_unref(ist->filter_frame);
1648     av_frame_unref(decoded_frame);
1649     return err < 0 ? err : ret;
1650 }
1651
1652 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1653 {
1654     AVFrame *decoded_frame, *f;
1655     void *buffer_to_free = NULL;
1656     int i, ret = 0, err = 0, resample_changed;
1657     int64_t best_effort_timestamp;
1658     AVRational *frame_sample_aspect;
1659
1660     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1661         return AVERROR(ENOMEM);
1662     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1663         return AVERROR(ENOMEM);
1664     decoded_frame = ist->decoded_frame;
1665     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1666
1667     update_benchmark(NULL);
1668     ret = avcodec_decode_video2(ist->st->codec,
1669                                 decoded_frame, got_output, pkt);
1670     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1671
1672     if (*got_output || ret<0 || pkt->size)
1673         decode_error_stat[ret<0] ++;
1674
1675     if (!*got_output || ret < 0) {
1676         if (!pkt->size) {
1677             for (i = 0; i < ist->nb_filters; i++)
1678 #if 1
1679                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1680 #else
1681                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1682 #endif
1683         }
1684         return ret;
1685     }
1686
1687     if(ist->top_field_first>=0)
1688         decoded_frame->top_field_first = ist->top_field_first;
1689
1690     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1691     if(best_effort_timestamp != AV_NOPTS_VALUE)
1692         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1693
1694     if (debug_ts) {
1695         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1696                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1697                 ist->st->index, av_ts2str(decoded_frame->pts),
1698                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1699                 best_effort_timestamp,
1700                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1701                 decoded_frame->key_frame, decoded_frame->pict_type);
1702     }
1703
1704     pkt->size = 0;
1705
1706     if (ist->st->sample_aspect_ratio.num)
1707         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1708
1709     resample_changed = ist->resample_width   != decoded_frame->width  ||
1710                        ist->resample_height  != decoded_frame->height ||
1711                        ist->resample_pix_fmt != decoded_frame->format;
1712     if (resample_changed) {
1713         av_log(NULL, AV_LOG_INFO,
1714                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1715                ist->file_index, ist->st->index,
1716                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1717                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1718
1719         ist->resample_width   = decoded_frame->width;
1720         ist->resample_height  = decoded_frame->height;
1721         ist->resample_pix_fmt = decoded_frame->format;
1722
1723         for (i = 0; i < nb_filtergraphs; i++) {
1724             if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
1725                 configure_filtergraph(filtergraphs[i]) < 0) {
1726                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1727                 exit_program(1);
1728             }
1729         }
1730     }
1731
1732     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1733     for (i = 0; i < ist->nb_filters; i++) {
1734         if (!frame_sample_aspect->num)
1735             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1736
1737         if (i < ist->nb_filters - 1) {
1738             f = ist->filter_frame;
1739             err = av_frame_ref(f, decoded_frame);
1740             if (err < 0)
1741                 break;
1742         } else
1743             f = decoded_frame;
1744         ret = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f, AV_BUFFERSRC_FLAG_PUSH);
1745         if (ret == AVERROR_EOF) {
1746             ret = 0; /* ignore */
1747         } else if (ret < 0) {
1748             av_log(NULL, AV_LOG_FATAL,
1749                    "Failed to inject frame into filter network: %s\n", av_err2str(ret));
1750             exit_program(1);
1751         }
1752     }
1753
1754     av_frame_unref(ist->filter_frame);
1755     av_frame_unref(decoded_frame);
1756     av_free(buffer_to_free);
1757     return err < 0 ? err : ret;
1758 }
1759
1760 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1761 {
1762     AVSubtitle subtitle;
1763     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1764                                           &subtitle, got_output, pkt);
1765
1766     if (*got_output || ret<0 || pkt->size)
1767         decode_error_stat[ret<0] ++;
1768
1769     if (ret < 0 || !*got_output) {
1770         if (!pkt->size)
1771             sub2video_flush(ist);
1772         return ret;
1773     }
1774
1775     if (ist->fix_sub_duration) {
1776         if (ist->prev_sub.got_output) {
1777             int end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1778                                  1000, AV_TIME_BASE);
1779             if (end < ist->prev_sub.subtitle.end_display_time) {
1780                 av_log(ist->st->codec, AV_LOG_DEBUG,
1781                        "Subtitle duration reduced from %d to %d\n",
1782                        ist->prev_sub.subtitle.end_display_time, end);
1783                 ist->prev_sub.subtitle.end_display_time = end;
1784             }
1785         }
1786         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1787         FFSWAP(int,        ret,         ist->prev_sub.ret);
1788         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1789     }
1790
1791     sub2video_update(ist, &subtitle);
1792
1793     if (!*got_output || !subtitle.num_rects)
1794         return ret;
1795
1796     for (i = 0; i < nb_output_streams; i++) {
1797         OutputStream *ost = output_streams[i];
1798
1799         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1800             continue;
1801
1802         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
1803     }
1804
1805     avsubtitle_free(&subtitle);
1806     return ret;
1807 }
1808
1809 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1810 static int output_packet(InputStream *ist, const AVPacket *pkt)
1811 {
1812     int ret = 0, i;
1813     int got_output = 0;
1814
1815     AVPacket avpkt;
1816     if (!ist->saw_first_ts) {
1817         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;
1818         ist->pts = 0;
1819         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1820             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1821             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1822         }
1823         ist->saw_first_ts = 1;
1824     }
1825
1826     if (ist->next_dts == AV_NOPTS_VALUE)
1827         ist->next_dts = ist->dts;
1828     if (ist->next_pts == AV_NOPTS_VALUE)
1829         ist->next_pts = ist->pts;
1830
1831     if (pkt == NULL) {
1832         /* EOF handling */
1833         av_init_packet(&avpkt);
1834         avpkt.data = NULL;
1835         avpkt.size = 0;
1836         goto handle_eof;
1837     } else {
1838         avpkt = *pkt;
1839     }
1840
1841     if (pkt->dts != AV_NOPTS_VALUE) {
1842         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1843         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1844             ist->next_pts = ist->pts = ist->dts;
1845     }
1846
1847     // while we have more to decode or while the decoder did output something on EOF
1848     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1849         int duration;
1850     handle_eof:
1851
1852         ist->pts = ist->next_pts;
1853         ist->dts = ist->next_dts;
1854
1855         if (avpkt.size && avpkt.size != pkt->size) {
1856             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1857                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1858             ist->showed_multi_packet_warning = 1;
1859         }
1860
1861         switch (ist->st->codec->codec_type) {
1862         case AVMEDIA_TYPE_AUDIO:
1863             ret = decode_audio    (ist, &avpkt, &got_output);
1864             break;
1865         case AVMEDIA_TYPE_VIDEO:
1866             ret = decode_video    (ist, &avpkt, &got_output);
1867             if (avpkt.duration) {
1868                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1869             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1870                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1871                 duration = ((int64_t)AV_TIME_BASE *
1872                                 ist->st->codec->time_base.num * ticks) /
1873                                 ist->st->codec->time_base.den;
1874             } else
1875                 duration = 0;
1876
1877             if(ist->dts != AV_NOPTS_VALUE && duration) {
1878                 ist->next_dts += duration;
1879             }else
1880                 ist->next_dts = AV_NOPTS_VALUE;
1881
1882             if (got_output)
1883                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1884             break;
1885         case AVMEDIA_TYPE_SUBTITLE:
1886             ret = transcode_subtitles(ist, &avpkt, &got_output);
1887             break;
1888         default:
1889             return -1;
1890         }
1891
1892         if (ret < 0)
1893             return ret;
1894
1895         avpkt.dts=
1896         avpkt.pts= AV_NOPTS_VALUE;
1897
1898         // touch data and size only if not EOF
1899         if (pkt) {
1900             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1901                 ret = avpkt.size;
1902             avpkt.data += ret;
1903             avpkt.size -= ret;
1904         }
1905         if (!got_output) {
1906             continue;
1907         }
1908     }
1909
1910     /* handle stream copy */
1911     if (!ist->decoding_needed) {
1912         ist->dts = ist->next_dts;
1913         switch (ist->st->codec->codec_type) {
1914         case AVMEDIA_TYPE_AUDIO:
1915             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1916                              ist->st->codec->sample_rate;
1917             break;
1918         case AVMEDIA_TYPE_VIDEO:
1919             if (ist->framerate.num) {
1920                 // TODO: Remove work-around for c99-to-c89 issue 7
1921                 AVRational time_base_q = AV_TIME_BASE_Q;
1922                 int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate));
1923                 ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q);
1924             } else if (pkt->duration) {
1925                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1926             } else if(ist->st->codec->time_base.num != 0) {
1927                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1928                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1929                                   ist->st->codec->time_base.num * ticks) /
1930                                   ist->st->codec->time_base.den;
1931             }
1932             break;
1933         }
1934         ist->pts = ist->dts;
1935         ist->next_pts = ist->next_dts;
1936     }
1937     for (i = 0; pkt && i < nb_output_streams; i++) {
1938         OutputStream *ost = output_streams[i];
1939
1940         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1941             continue;
1942
1943         do_streamcopy(ist, ost, pkt);
1944     }
1945
1946     return 0;
1947 }
1948
1949 static void print_sdp(void)
1950 {
1951     char sdp[16384];
1952     int i;
1953     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1954
1955     if (!avc)
1956         exit_program(1);
1957     for (i = 0; i < nb_output_files; i++)
1958         avc[i] = output_files[i]->ctx;
1959
1960     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1961     printf("SDP:\n%s\n", sdp);
1962     fflush(stdout);
1963     av_freep(&avc);
1964 }
1965
1966 static int init_input_stream(int ist_index, char *error, int error_len)
1967 {
1968     int ret;
1969     InputStream *ist = input_streams[ist_index];
1970
1971     if (ist->decoding_needed) {
1972         AVCodec *codec = ist->dec;
1973         if (!codec) {
1974             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1975                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1976             return AVERROR(EINVAL);
1977         }
1978
1979         av_opt_set_int(ist->st->codec, "refcounted_frames", 1, 0);
1980
1981         if (!av_dict_get(ist->opts, "threads", NULL, 0))
1982             av_dict_set(&ist->opts, "threads", "auto", 0);
1983         if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
1984             char errbuf[128];
1985             if (ret == AVERROR_EXPERIMENTAL)
1986                 abort_codec_experimental(codec, 0);
1987
1988             av_strerror(ret, errbuf, sizeof(errbuf));
1989
1990             snprintf(error, error_len,
1991                      "Error while opening decoder for input stream "
1992                      "#%d:%d : %s",
1993                      ist->file_index, ist->st->index, errbuf);
1994             return ret;
1995         }
1996         assert_avoptions(ist->opts);
1997     }
1998
1999     ist->next_pts = AV_NOPTS_VALUE;
2000     ist->next_dts = AV_NOPTS_VALUE;
2001     ist->is_start = 1;
2002
2003     return 0;
2004 }
2005
2006 static InputStream *get_input_stream(OutputStream *ost)
2007 {
2008     if (ost->source_index >= 0)
2009         return input_streams[ost->source_index];
2010     return NULL;
2011 }
2012
2013 static int compare_int64(const void *a, const void *b)
2014 {
2015     int64_t va = *(int64_t *)a, vb = *(int64_t *)b;
2016     return va < vb ? -1 : va > vb ? +1 : 0;
2017 }
2018
2019 static void parse_forced_key_frames(char *kf, OutputStream *ost,
2020                                     AVCodecContext *avctx)
2021 {
2022     char *p;
2023     int n = 1, i, size, index = 0;
2024     int64_t t, *pts;
2025
2026     for (p = kf; *p; p++)
2027         if (*p == ',')
2028             n++;
2029     size = n;
2030     pts = av_malloc(sizeof(*pts) * size);
2031     if (!pts) {
2032         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
2033         exit_program(1);
2034     }
2035
2036     p = kf;
2037     for (i = 0; i < n; i++) {
2038         char *next = strchr(p, ',');
2039
2040         if (next)
2041             *next++ = 0;
2042
2043         if (!memcmp(p, "chapters", 8)) {
2044
2045             AVFormatContext *avf = output_files[ost->file_index]->ctx;
2046             int j;
2047
2048             if (avf->nb_chapters > INT_MAX - size ||
2049                 !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
2050                                      sizeof(*pts)))) {
2051                 av_log(NULL, AV_LOG_FATAL,
2052                        "Could not allocate forced key frames array.\n");
2053                 exit_program(1);
2054             }
2055             t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
2056             t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2057
2058             for (j = 0; j < avf->nb_chapters; j++) {
2059                 AVChapter *c = avf->chapters[j];
2060                 av_assert1(index < size);
2061                 pts[index++] = av_rescale_q(c->start, c->time_base,
2062                                             avctx->time_base) + t;
2063             }
2064
2065         } else {
2066
2067             t = parse_time_or_die("force_key_frames", p, 1);
2068             av_assert1(index < size);
2069             pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2070
2071         }
2072
2073         p = next;
2074     }
2075
2076     av_assert0(index == size);
2077     qsort(pts, size, sizeof(*pts), compare_int64);
2078     ost->forced_kf_count = size;
2079     ost->forced_kf_pts   = pts;
2080 }
2081
2082 static void report_new_stream(int input_index, AVPacket *pkt)
2083 {
2084     InputFile *file = input_files[input_index];
2085     AVStream *st = file->ctx->streams[pkt->stream_index];
2086
2087     if (pkt->stream_index < file->nb_streams_warn)
2088         return;
2089     av_log(file->ctx, AV_LOG_WARNING,
2090            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
2091            av_get_media_type_string(st->codec->codec_type),
2092            input_index, pkt->stream_index,
2093            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
2094     file->nb_streams_warn = pkt->stream_index + 1;
2095 }
2096
2097 static int transcode_init(void)
2098 {
2099     int ret = 0, i, j, k;
2100     AVFormatContext *oc;
2101     AVCodecContext *codec;
2102     OutputStream *ost;
2103     InputStream *ist;
2104     char error[1024];
2105     int want_sdp = 1;
2106
2107     /* init framerate emulation */
2108     for (i = 0; i < nb_input_files; i++) {
2109         InputFile *ifile = input_files[i];
2110         if (ifile->rate_emu)
2111             for (j = 0; j < ifile->nb_streams; j++)
2112                 input_streams[j + ifile->ist_index]->start = av_gettime();
2113     }
2114
2115     /* output stream init */
2116     for (i = 0; i < nb_output_files; i++) {
2117         oc = output_files[i]->ctx;
2118         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2119             av_dump_format(oc, i, oc->filename, 1);
2120             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2121             return AVERROR(EINVAL);
2122         }
2123     }
2124
2125     /* init complex filtergraphs */
2126     for (i = 0; i < nb_filtergraphs; i++)
2127         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2128             return ret;
2129
2130     /* for each output stream, we compute the right encoding parameters */
2131     for (i = 0; i < nb_output_streams; i++) {
2132         AVCodecContext *icodec = NULL;
2133         ost = output_streams[i];
2134         oc  = output_files[ost->file_index]->ctx;
2135         ist = get_input_stream(ost);
2136
2137         if (ost->attachment_filename)
2138             continue;
2139
2140         codec  = ost->st->codec;
2141
2142         if (ist) {
2143             icodec = ist->st->codec;
2144
2145             ost->st->disposition          = ist->st->disposition;
2146             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2147             codec->chroma_sample_location = icodec->chroma_sample_location;
2148         }
2149
2150         if (ost->stream_copy) {
2151             AVRational sar;
2152             uint64_t extra_size;
2153
2154             av_assert0(ist && !ost->filter);
2155
2156             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2157
2158             if (extra_size > INT_MAX) {
2159                 return AVERROR(EINVAL);
2160             }
2161
2162             /* if stream_copy is selected, no need to decode or encode */
2163             codec->codec_id   = icodec->codec_id;
2164             codec->codec_type = icodec->codec_type;
2165
2166             if (!codec->codec_tag) {
2167                 unsigned int codec_tag;
2168                 if (!oc->oformat->codec_tag ||
2169                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2170                      !av_codec_get_tag2(oc->oformat->codec_tag, icodec->codec_id, &codec_tag))
2171                     codec->codec_tag = icodec->codec_tag;
2172             }
2173
2174             codec->bit_rate       = icodec->bit_rate;
2175             codec->rc_max_rate    = icodec->rc_max_rate;
2176             codec->rc_buffer_size = icodec->rc_buffer_size;
2177             codec->field_order    = icodec->field_order;
2178             codec->extradata      = av_mallocz(extra_size);
2179             if (!codec->extradata) {
2180                 return AVERROR(ENOMEM);
2181             }
2182             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2183             codec->extradata_size= icodec->extradata_size;
2184             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2185
2186             codec->time_base = ist->st->time_base;
2187             /*
2188              * Avi is a special case here because it supports variable fps but
2189              * having the fps and timebase differe significantly adds quite some
2190              * overhead
2191              */
2192             if(!strcmp(oc->oformat->name, "avi")) {
2193                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2194                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2195                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2196                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2197                      || copy_tb==2){
2198                     codec->time_base.num = ist->st->r_frame_rate.den;
2199                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2200                     codec->ticks_per_frame = 2;
2201                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2202                                  && av_q2d(ist->st->time_base) < 1.0/500
2203                     || copy_tb==0){
2204                     codec->time_base = icodec->time_base;
2205                     codec->time_base.num *= icodec->ticks_per_frame;
2206                     codec->time_base.den *= 2;
2207                     codec->ticks_per_frame = 2;
2208                 }
2209             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2210                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2211                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2212                       && strcmp(oc->oformat->name, "f4v")
2213             ) {
2214                 if(   copy_tb<0 && icodec->time_base.den
2215                                 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2216                                 && av_q2d(ist->st->time_base) < 1.0/500
2217                    || copy_tb==0){
2218                     codec->time_base = icodec->time_base;
2219                     codec->time_base.num *= icodec->ticks_per_frame;
2220                 }
2221             }
2222             if (   codec->codec_tag == AV_RL32("tmcd")
2223                 && icodec->time_base.num < icodec->time_base.den
2224                 && icodec->time_base.num > 0
2225                 && 121LL*icodec->time_base.num > icodec->time_base.den) {
2226                 codec->time_base = icodec->time_base;
2227             }
2228
2229             if (ist && !ost->frame_rate.num)
2230                 ost->frame_rate = ist->framerate;
2231             if(ost->frame_rate.num)
2232                 codec->time_base = av_inv_q(ost->frame_rate);
2233
2234             av_reduce(&codec->time_base.num, &codec->time_base.den,
2235                         codec->time_base.num, codec->time_base.den, INT_MAX);
2236
2237             switch (codec->codec_type) {
2238             case AVMEDIA_TYPE_AUDIO:
2239                 if (audio_volume != 256) {
2240                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2241                     exit_program(1);
2242                 }
2243                 codec->channel_layout     = icodec->channel_layout;
2244                 codec->sample_rate        = icodec->sample_rate;
2245                 codec->channels           = icodec->channels;
2246                 codec->frame_size         = icodec->frame_size;
2247                 codec->audio_service_type = icodec->audio_service_type;
2248                 codec->block_align        = icodec->block_align;
2249                 if((codec->block_align == 1 || codec->block_align == 1152 || codec->block_align == 576) && codec->codec_id == AV_CODEC_ID_MP3)
2250                     codec->block_align= 0;
2251                 if(codec->codec_id == AV_CODEC_ID_AC3)
2252                     codec->block_align= 0;
2253                 break;
2254             case AVMEDIA_TYPE_VIDEO:
2255                 codec->pix_fmt            = icodec->pix_fmt;
2256                 codec->width              = icodec->width;
2257                 codec->height             = icodec->height;
2258                 codec->has_b_frames       = icodec->has_b_frames;
2259                 if (ost->frame_aspect_ratio.num) { // overridden by the -aspect cli option
2260                     sar =
2261                         av_mul_q(ost->frame_aspect_ratio,
2262                                  (AVRational){ codec->height, codec->width });
2263                     av_log(NULL, AV_LOG_WARNING, "Overriding aspect ratio "
2264                            "with stream copy may produce invalid files\n");
2265                 }
2266                 else if (ist->st->sample_aspect_ratio.num)
2267                     sar = ist->st->sample_aspect_ratio;
2268                 else
2269                     sar = icodec->sample_aspect_ratio;
2270                 ost->st->sample_aspect_ratio = codec->sample_aspect_ratio = sar;
2271                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2272                 break;
2273             case AVMEDIA_TYPE_SUBTITLE:
2274                 codec->width  = icodec->width;
2275                 codec->height = icodec->height;
2276                 break;
2277             case AVMEDIA_TYPE_DATA:
2278             case AVMEDIA_TYPE_ATTACHMENT:
2279                 break;
2280             default:
2281                 abort();
2282             }
2283         } else {
2284             if (!ost->enc)
2285                 ost->enc = avcodec_find_encoder(codec->codec_id);
2286             if (!ost->enc) {
2287                 /* should only happen when a default codec is not present. */
2288                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2289                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2290                 ret = AVERROR(EINVAL);
2291                 goto dump_format;
2292             }
2293
2294             if (ist)
2295                 ist->decoding_needed++;
2296             ost->encoding_needed = 1;
2297
2298             if (!ost->filter &&
2299                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2300                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2301                     FilterGraph *fg;
2302                     fg = init_simple_filtergraph(ist, ost);
2303                     if (configure_filtergraph(fg)) {
2304                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2305                         exit_program(1);
2306                     }
2307             }
2308
2309             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2310                 if (ost->filter && !ost->frame_rate.num)
2311                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2312                 if (ist && !ost->frame_rate.num)
2313                     ost->frame_rate = ist->framerate;
2314                 if (ist && !ost->frame_rate.num)
2315                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2316 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2317                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2318                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2319                     ost->frame_rate = ost->enc->supported_framerates[idx];
2320                 }
2321             }
2322
2323             switch (codec->codec_type) {
2324             case AVMEDIA_TYPE_AUDIO:
2325                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2326                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2327                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2328                 codec->channels       = avfilter_link_get_channels(ost->filter->filter->inputs[0]);
2329                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2330                 break;
2331             case AVMEDIA_TYPE_VIDEO:
2332                 codec->time_base = av_inv_q(ost->frame_rate);
2333                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2334                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2335                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2336                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2337                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2338                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2339                 }
2340                 for (j = 0; j < ost->forced_kf_count; j++)
2341                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2342                                                          AV_TIME_BASE_Q,
2343                                                          codec->time_base);
2344
2345                 codec->width  = ost->filter->filter->inputs[0]->w;
2346                 codec->height = ost->filter->filter->inputs[0]->h;
2347                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2348                     ost->frame_aspect_ratio.num ? // overridden by the -aspect cli option
2349                     av_mul_q(ost->frame_aspect_ratio, (AVRational){ codec->height, codec->width }) :
2350                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2351                 if (!strncmp(ost->enc->name, "libx264", 7) &&
2352                     codec->pix_fmt == AV_PIX_FMT_NONE &&
2353                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2354                     av_log(NULL, AV_LOG_WARNING,
2355                            "No pixel format specified, %s for H.264 encoding chosen.\n"
2356                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2357                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2358                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2359
2360                 if (!icodec ||
2361                     codec->width   != icodec->width  ||
2362                     codec->height  != icodec->height ||
2363                     codec->pix_fmt != icodec->pix_fmt) {
2364                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2365                 }
2366
2367                 if (ost->forced_keyframes) {
2368                     if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
2369                         ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
2370                                             forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
2371                         if (ret < 0) {
2372                             av_log(NULL, AV_LOG_ERROR,
2373                                    "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
2374                             return ret;
2375                         }
2376                         ost->forced_keyframes_expr_const_values[FKF_N] = 0;
2377                         ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
2378                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
2379                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;
2380                     } else {
2381                         parse_forced_key_frames(ost->forced_keyframes, ost, ost->st->codec);
2382                     }
2383                 }
2384                 break;
2385             case AVMEDIA_TYPE_SUBTITLE:
2386                 codec->time_base = (AVRational){1, 1000};
2387                 if (!codec->width) {
2388                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2389                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2390                 }
2391                 break;
2392             default:
2393                 abort();
2394                 break;
2395             }
2396             /* two pass mode */
2397             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2398                 char logfilename[1024];
2399                 FILE *f;
2400
2401                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2402                          ost->logfile_prefix ? ost->logfile_prefix :
2403                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2404                          i);
2405                 if (!strcmp(ost->enc->name, "libx264")) {
2406                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2407                 } else {
2408                     if (codec->flags & CODEC_FLAG_PASS2) {
2409                         char  *logbuffer;
2410                         size_t logbuffer_size;
2411                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2412                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2413                                    logfilename);
2414                             exit_program(1);
2415                         }
2416                         codec->stats_in = logbuffer;
2417                     }
2418                     if (codec->flags & CODEC_FLAG_PASS1) {
2419                         f = fopen(logfilename, "wb");
2420                         if (!f) {
2421                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2422                                 logfilename, strerror(errno));
2423                             exit_program(1);
2424                         }
2425                         ost->logfile = f;
2426                     }
2427                 }
2428             }
2429         }
2430     }
2431
2432     /* open each encoder */
2433     for (i = 0; i < nb_output_streams; i++) {
2434         ost = output_streams[i];
2435         if (ost->encoding_needed) {
2436             AVCodec      *codec = ost->enc;
2437             AVCodecContext *dec = NULL;
2438
2439             if ((ist = get_input_stream(ost)))
2440                 dec = ist->st->codec;
2441             if (dec && dec->subtitle_header) {
2442                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2443                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2444                 if (!ost->st->codec->subtitle_header) {
2445                     ret = AVERROR(ENOMEM);
2446                     goto dump_format;
2447                 }
2448                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2449                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2450             }
2451             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2452                 av_dict_set(&ost->opts, "threads", "auto", 0);
2453             if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
2454                 if (ret == AVERROR_EXPERIMENTAL)
2455                     abort_codec_experimental(codec, 1);
2456                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2457                         ost->file_index, ost->index);
2458                 goto dump_format;
2459             }
2460             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2461                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2462                 av_buffersink_set_frame_size(ost->filter->filter,
2463                                              ost->st->codec->frame_size);
2464             assert_avoptions(ost->opts);
2465             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2466                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2467                                              " It takes bits/s as argument, not kbits/s\n");
2468             extra_size += ost->st->codec->extradata_size;
2469
2470             if (ost->st->codec->me_threshold)
2471                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
2472         } else {
2473             av_opt_set_dict(ost->st->codec, &ost->opts);
2474         }
2475     }
2476
2477     /* init input streams */
2478     for (i = 0; i < nb_input_streams; i++)
2479         if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
2480             for (i = 0; i < nb_output_streams; i++) {
2481                 ost = output_streams[i];
2482                 avcodec_close(ost->st->codec);
2483             }
2484             goto dump_format;
2485         }
2486
2487     /* discard unused programs */
2488     for (i = 0; i < nb_input_files; i++) {
2489         InputFile *ifile = input_files[i];
2490         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2491             AVProgram *p = ifile->ctx->programs[j];
2492             int discard  = AVDISCARD_ALL;
2493
2494             for (k = 0; k < p->nb_stream_indexes; k++)
2495                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2496                     discard = AVDISCARD_DEFAULT;
2497                     break;
2498                 }
2499             p->discard = discard;
2500         }
2501     }
2502
2503     /* open files and write file headers */
2504     for (i = 0; i < nb_output_files; i++) {
2505         oc = output_files[i]->ctx;
2506         oc->interrupt_callback = int_cb;
2507         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2508             char errbuf[128];
2509             av_strerror(ret, errbuf, sizeof(errbuf));
2510             snprintf(error, sizeof(error),
2511                      "Could not write header for output file #%d "
2512                      "(incorrect codec parameters ?): %s",
2513                      i, errbuf);
2514             ret = AVERROR(EINVAL);
2515             goto dump_format;
2516         }
2517 //         assert_avoptions(output_files[i]->opts);
2518         if (strcmp(oc->oformat->name, "rtp")) {
2519             want_sdp = 0;
2520         }
2521     }
2522
2523  dump_format:
2524     /* dump the file output parameters - cannot be done before in case
2525        of stream copy */
2526     for (i = 0; i < nb_output_files; i++) {
2527         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2528     }
2529
2530     /* dump the stream mapping */
2531     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2532     for (i = 0; i < nb_input_streams; i++) {
2533         ist = input_streams[i];
2534
2535         for (j = 0; j < ist->nb_filters; j++) {
2536             if (ist->filters[j]->graph->graph_desc) {
2537                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2538                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2539                        ist->filters[j]->name);
2540                 if (nb_filtergraphs > 1)
2541                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2542                 av_log(NULL, AV_LOG_INFO, "\n");
2543             }
2544         }
2545     }
2546
2547     for (i = 0; i < nb_output_streams; i++) {
2548         ost = output_streams[i];
2549
2550         if (ost->attachment_filename) {
2551             /* an attached file */
2552             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2553                    ost->attachment_filename, ost->file_index, ost->index);
2554             continue;
2555         }
2556
2557         if (ost->filter && ost->filter->graph->graph_desc) {
2558             /* output from a complex graph */
2559             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2560             if (nb_filtergraphs > 1)
2561                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2562
2563             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2564                    ost->index, ost->enc ? ost->enc->name : "?");
2565             continue;
2566         }
2567
2568         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2569                input_streams[ost->source_index]->file_index,
2570                input_streams[ost->source_index]->st->index,
2571                ost->file_index,
2572                ost->index);
2573         if (ost->sync_ist != input_streams[ost->source_index])
2574             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2575                    ost->sync_ist->file_index,
2576                    ost->sync_ist->st->index);
2577         if (ost->stream_copy)
2578             av_log(NULL, AV_LOG_INFO, " (copy)");
2579         else
2580             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2581                    input_streams[ost->source_index]->dec->name : "?",
2582                    ost->enc ? ost->enc->name : "?");
2583         av_log(NULL, AV_LOG_INFO, "\n");
2584     }
2585
2586     if (ret) {
2587         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2588         return ret;
2589     }
2590
2591     if (want_sdp) {
2592         print_sdp();
2593     }
2594
2595     return 0;
2596 }
2597
2598 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2599 static int need_output(void)
2600 {
2601     int i;
2602
2603     for (i = 0; i < nb_output_streams; i++) {
2604         OutputStream *ost    = output_streams[i];
2605         OutputFile *of       = output_files[ost->file_index];
2606         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2607
2608         if (ost->finished ||
2609             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2610             continue;
2611         if (ost->frame_number >= ost->max_frames) {
2612             int j;
2613             for (j = 0; j < of->ctx->nb_streams; j++)
2614                 close_output_stream(output_streams[of->ost_index + j]);
2615             continue;
2616         }
2617
2618         return 1;
2619     }
2620
2621     return 0;
2622 }
2623
2624 /**
2625  * Select the output stream to process.
2626  *
2627  * @return  selected output stream, or NULL if none available
2628  */
2629 static OutputStream *choose_output(void)
2630 {
2631     int i;
2632     int64_t opts_min = INT64_MAX;
2633     OutputStream *ost_min = NULL;
2634
2635     for (i = 0; i < nb_output_streams; i++) {
2636         OutputStream *ost = output_streams[i];
2637         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2638                                     AV_TIME_BASE_Q);
2639         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2640             opts_min = opts;
2641             ost_min  = ost;
2642         }
2643     }
2644     return ost_min;
2645 }
2646
2647 static int check_keyboard_interaction(int64_t cur_time)
2648 {
2649     int i, ret, key;
2650     static int64_t last_time;
2651     if (received_nb_signals)
2652         return AVERROR_EXIT;
2653     /* read_key() returns 0 on EOF */
2654     if(cur_time - last_time >= 100000 && !run_as_daemon){
2655         key =  read_key();
2656         last_time = cur_time;
2657     }else
2658         key = -1;
2659     if (key == 'q')
2660         return AVERROR_EXIT;
2661     if (key == '+') av_log_set_level(av_log_get_level()+10);
2662     if (key == '-') av_log_set_level(av_log_get_level()-10);
2663     if (key == 's') qp_hist     ^= 1;
2664     if (key == 'h'){
2665         if (do_hex_dump){
2666             do_hex_dump = do_pkt_dump = 0;
2667         } else if(do_pkt_dump){
2668             do_hex_dump = 1;
2669         } else
2670             do_pkt_dump = 1;
2671         av_log_set_level(AV_LOG_DEBUG);
2672     }
2673     if (key == 'c' || key == 'C'){
2674         char buf[4096], target[64], command[256], arg[256] = {0};
2675         double time;
2676         int k, n = 0;
2677         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2678         i = 0;
2679         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2680             if (k > 0)
2681                 buf[i++] = k;
2682         buf[i] = 0;
2683         if (k > 0 &&
2684             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2685             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2686                    target, time, command, arg);
2687             for (i = 0; i < nb_filtergraphs; i++) {
2688                 FilterGraph *fg = filtergraphs[i];
2689                 if (fg->graph) {
2690                     if (time < 0) {
2691                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2692                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2693                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2694                     } else {
2695                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2696                     }
2697                 }
2698             }
2699         } else {
2700             av_log(NULL, AV_LOG_ERROR,
2701                    "Parse error, at least 3 arguments were expected, "
2702                    "only %d given in string '%s'\n", n, buf);
2703         }
2704     }
2705     if (key == 'd' || key == 'D'){
2706         int debug=0;
2707         if(key == 'D') {
2708             debug = input_streams[0]->st->codec->debug<<1;
2709             if(!debug) debug = 1;
2710             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2711                 debug += debug;
2712         }else
2713             if(scanf("%d", &debug)!=1)
2714                 fprintf(stderr,"error parsing debug value\n");
2715         for(i=0;i<nb_input_streams;i++) {
2716             input_streams[i]->st->codec->debug = debug;
2717         }
2718         for(i=0;i<nb_output_streams;i++) {
2719             OutputStream *ost = output_streams[i];
2720             ost->st->codec->debug = debug;
2721         }
2722         if(debug) av_log_set_level(AV_LOG_DEBUG);
2723         fprintf(stderr,"debug=%d\n", debug);
2724     }
2725     if (key == '?'){
2726         fprintf(stderr, "key    function\n"
2727                         "?      show this help\n"
2728                         "+      increase verbosity\n"
2729                         "-      decrease verbosity\n"
2730                         "c      Send command to filtergraph\n"
2731                         "D      cycle through available debug modes\n"
2732                         "h      dump packets/hex press to cycle through the 3 states\n"
2733                         "q      quit\n"
2734                         "s      Show QP histogram\n"
2735         );
2736     }
2737     return 0;
2738 }
2739
2740 #if HAVE_PTHREADS
2741 static void *input_thread(void *arg)
2742 {
2743     InputFile *f = arg;
2744     int ret = 0;
2745
2746     while (!transcoding_finished && ret >= 0) {
2747         AVPacket pkt;
2748         ret = av_read_frame(f->ctx, &pkt);
2749
2750         if (ret == AVERROR(EAGAIN)) {
2751             av_usleep(10000);
2752             ret = 0;
2753             continue;
2754         } else if (ret < 0)
2755             break;
2756
2757         pthread_mutex_lock(&f->fifo_lock);
2758         while (!av_fifo_space(f->fifo))
2759             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2760
2761         av_dup_packet(&pkt);
2762         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2763
2764         pthread_mutex_unlock(&f->fifo_lock);
2765     }
2766
2767     f->finished = 1;
2768     return NULL;
2769 }
2770
2771 static void free_input_threads(void)
2772 {
2773     int i;
2774
2775     if (nb_input_files == 1)
2776         return;
2777
2778     transcoding_finished = 1;
2779
2780     for (i = 0; i < nb_input_files; i++) {
2781         InputFile *f = input_files[i];
2782         AVPacket pkt;
2783
2784         if (!f->fifo || f->joined)
2785             continue;
2786
2787         pthread_mutex_lock(&f->fifo_lock);
2788         while (av_fifo_size(f->fifo)) {
2789             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2790             av_free_packet(&pkt);
2791         }
2792         pthread_cond_signal(&f->fifo_cond);
2793         pthread_mutex_unlock(&f->fifo_lock);
2794
2795         pthread_join(f->thread, NULL);
2796         f->joined = 1;
2797
2798         while (av_fifo_size(f->fifo)) {
2799             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2800             av_free_packet(&pkt);
2801         }
2802         av_fifo_free(f->fifo);
2803     }
2804 }
2805
2806 static int init_input_threads(void)
2807 {
2808     int i, ret;
2809
2810     if (nb_input_files == 1)
2811         return 0;
2812
2813     for (i = 0; i < nb_input_files; i++) {
2814         InputFile *f = input_files[i];
2815
2816         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2817             return AVERROR(ENOMEM);
2818
2819         pthread_mutex_init(&f->fifo_lock, NULL);
2820         pthread_cond_init (&f->fifo_cond, NULL);
2821
2822         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2823             return AVERROR(ret);
2824     }
2825     return 0;
2826 }
2827
2828 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2829 {
2830     int ret = 0;
2831
2832     pthread_mutex_lock(&f->fifo_lock);
2833
2834     if (av_fifo_size(f->fifo)) {
2835         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2836         pthread_cond_signal(&f->fifo_cond);
2837     } else {
2838         if (f->finished)
2839             ret = AVERROR_EOF;
2840         else
2841             ret = AVERROR(EAGAIN);
2842     }
2843
2844     pthread_mutex_unlock(&f->fifo_lock);
2845
2846     return ret;
2847 }
2848 #endif
2849
2850 static int get_input_packet(InputFile *f, AVPacket *pkt)
2851 {
2852     if (f->rate_emu) {
2853         int i;
2854         for (i = 0; i < f->nb_streams; i++) {
2855             InputStream *ist = input_streams[f->ist_index + i];
2856             int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
2857             int64_t now = av_gettime() - ist->start;
2858             if (pts > now)
2859                 return AVERROR(EAGAIN);
2860         }
2861     }
2862
2863 #if HAVE_PTHREADS
2864     if (nb_input_files > 1)
2865         return get_input_packet_mt(f, pkt);
2866 #endif
2867     return av_read_frame(f->ctx, pkt);
2868 }
2869
2870 static int got_eagain(void)
2871 {
2872     int i;
2873     for (i = 0; i < nb_output_streams; i++)
2874         if (output_streams[i]->unavailable)
2875             return 1;
2876     return 0;
2877 }
2878
2879 static void reset_eagain(void)
2880 {
2881     int i;
2882     for (i = 0; i < nb_input_files; i++)
2883         input_files[i]->eagain = 0;
2884     for (i = 0; i < nb_output_streams; i++)
2885         output_streams[i]->unavailable = 0;
2886 }
2887
2888 /*
2889  * Return
2890  * - 0 -- one packet was read and processed
2891  * - AVERROR(EAGAIN) -- no packets were available for selected file,
2892  *   this function should be called again
2893  * - AVERROR_EOF -- this function should not be called again
2894  */
2895 static int process_input(int file_index)
2896 {
2897     InputFile *ifile = input_files[file_index];
2898     AVFormatContext *is;
2899     InputStream *ist;
2900     AVPacket pkt;
2901     int ret, i, j;
2902
2903     is  = ifile->ctx;
2904     ret = get_input_packet(ifile, &pkt);
2905
2906     if (ret == AVERROR(EAGAIN)) {
2907         ifile->eagain = 1;
2908         return ret;
2909     }
2910     if (ret < 0) {
2911         if (ret != AVERROR_EOF) {
2912             print_error(is->filename, ret);
2913             if (exit_on_error)
2914                 exit_program(1);
2915         }
2916         ifile->eof_reached = 1;
2917
2918         for (i = 0; i < ifile->nb_streams; i++) {
2919             ist = input_streams[ifile->ist_index + i];
2920             if (ist->decoding_needed)
2921                 output_packet(ist, NULL);
2922
2923             /* mark all outputs that don't go through lavfi as finished */
2924             for (j = 0; j < nb_output_streams; j++) {
2925                 OutputStream *ost = output_streams[j];
2926
2927                 if (ost->source_index == ifile->ist_index + i &&
2928                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2929                     close_output_stream(ost);
2930             }
2931         }
2932
2933         return AVERROR(EAGAIN);
2934     }
2935
2936     reset_eagain();
2937
2938     if (do_pkt_dump) {
2939         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2940                          is->streams[pkt.stream_index]);
2941     }
2942     /* the following test is needed in case new streams appear
2943        dynamically in stream : we ignore them */
2944     if (pkt.stream_index >= ifile->nb_streams) {
2945         report_new_stream(file_index, &pkt);
2946         goto discard_packet;
2947     }
2948
2949     ist = input_streams[ifile->ist_index + pkt.stream_index];
2950     if (ist->discard)
2951         goto discard_packet;
2952
2953     if (debug_ts) {
2954         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
2955                "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",
2956                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2957                av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
2958                av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
2959                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2960                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2961                av_ts2str(input_files[ist->file_index]->ts_offset),
2962                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
2963     }
2964
2965     if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
2966         int64_t stime, stime2;
2967         // Correcting starttime based on the enabled streams
2968         // 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.
2969         //       so we instead do it here as part of discontinuity handling
2970         if (   ist->next_dts == AV_NOPTS_VALUE
2971             && ifile->ts_offset == -is->start_time
2972             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2973             int64_t new_start_time = INT64_MAX;
2974             for (i=0; i<is->nb_streams; i++) {
2975                 AVStream *st = is->streams[i];
2976                 if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
2977                     continue;
2978                 new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
2979             }
2980             if (new_start_time > is->start_time) {
2981                 av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
2982                 ifile->ts_offset = -new_start_time;
2983             }
2984         }
2985
2986         stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
2987         stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
2988         ist->wrap_correction_done = 1;
2989
2990         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2991             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
2992             ist->wrap_correction_done = 0;
2993         }
2994         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2995             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
2996             ist->wrap_correction_done = 0;
2997         }
2998     }
2999
3000     if (pkt.dts != AV_NOPTS_VALUE)
3001         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3002     if (pkt.pts != AV_NOPTS_VALUE)
3003         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3004
3005     if (pkt.pts != AV_NOPTS_VALUE)
3006         pkt.pts *= ist->ts_scale;
3007     if (pkt.dts != AV_NOPTS_VALUE)
3008         pkt.dts *= ist->ts_scale;
3009
3010     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts == AV_NOPTS_VALUE && !copy_ts
3011         && (is->iformat->flags & AVFMT_TS_DISCONT) && ifile->last_ts != AV_NOPTS_VALUE) {
3012         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3013         int64_t delta   = pkt_dts - ifile->last_ts;
3014         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3015             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3016                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)){
3017             ifile->ts_offset -= delta;
3018             av_log(NULL, AV_LOG_DEBUG,
3019                    "Inter stream timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3020                    delta, ifile->ts_offset);
3021             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3022             if (pkt.pts != AV_NOPTS_VALUE)
3023                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3024         }
3025     }
3026
3027     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
3028         !copy_ts) {
3029         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3030         int64_t delta   = pkt_dts - ist->next_dts;
3031         if (is->iformat->flags & AVFMT_TS_DISCONT) {
3032         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3033             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3034                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3035             pkt_dts+1<ist->pts){
3036             ifile->ts_offset -= delta;
3037             av_log(NULL, AV_LOG_DEBUG,
3038                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3039                    delta, ifile->ts_offset);
3040             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3041             if (pkt.pts != AV_NOPTS_VALUE)
3042                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3043         }
3044         } else {
3045             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3046                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
3047                ) {
3048                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3049                 pkt.dts = AV_NOPTS_VALUE;
3050             }
3051             if (pkt.pts != AV_NOPTS_VALUE){
3052                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3053                 delta   = pkt_pts - ist->next_dts;
3054                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3055                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
3056                    ) {
3057                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3058                     pkt.pts = AV_NOPTS_VALUE;
3059                 }
3060             }
3061         }
3062     }
3063
3064     if (pkt.dts != AV_NOPTS_VALUE)
3065         ifile->last_ts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3066
3067     if (debug_ts) {
3068         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",
3069                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
3070                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3071                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3072                av_ts2str(input_files[ist->file_index]->ts_offset),
3073                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3074     }
3075
3076     sub2video_heartbeat(ist, pkt.pts);
3077
3078     ret = output_packet(ist, &pkt);
3079     if (ret < 0) {
3080         char buf[128];
3081         av_strerror(ret, buf, sizeof(buf));
3082         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
3083                 ist->file_index, ist->st->index, buf);
3084         if (exit_on_error)
3085             exit_program(1);
3086     }
3087
3088 discard_packet:
3089     av_free_packet(&pkt);
3090
3091     return 0;
3092 }
3093
3094 /**
3095  * Perform a step of transcoding for the specified filter graph.
3096  *
3097  * @param[in]  graph     filter graph to consider
3098  * @param[out] best_ist  input stream where a frame would allow to continue
3099  * @return  0 for success, <0 for error
3100  */
3101 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
3102 {
3103     int i, ret;
3104     int nb_requests, nb_requests_max = 0;
3105     InputFilter *ifilter;
3106     InputStream *ist;
3107
3108     *best_ist = NULL;
3109     ret = avfilter_graph_request_oldest(graph->graph);
3110     if (ret >= 0)
3111         return reap_filters();
3112
3113     if (ret == AVERROR_EOF) {
3114         ret = reap_filters();
3115         for (i = 0; i < graph->nb_outputs; i++)
3116             close_output_stream(graph->outputs[i]->ost);
3117         return ret;
3118     }
3119     if (ret != AVERROR(EAGAIN))
3120         return ret;
3121
3122     for (i = 0; i < graph->nb_inputs; i++) {
3123         ifilter = graph->inputs[i];
3124         ist = ifilter->ist;
3125         if (input_files[ist->file_index]->eagain ||
3126             input_files[ist->file_index]->eof_reached)
3127             continue;
3128         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
3129         if (nb_requests > nb_requests_max) {
3130             nb_requests_max = nb_requests;
3131             *best_ist = ist;
3132         }
3133     }
3134
3135     if (!*best_ist)
3136         for (i = 0; i < graph->nb_outputs; i++)
3137             graph->outputs[i]->ost->unavailable = 1;
3138
3139     return 0;
3140 }
3141
3142 /**
3143  * Run a single step of transcoding.
3144  *
3145  * @return  0 for success, <0 for error
3146  */
3147 static int transcode_step(void)
3148 {
3149     OutputStream *ost;
3150     InputStream  *ist;
3151     int ret;
3152
3153     ost = choose_output();
3154     if (!ost) {
3155         if (got_eagain()) {
3156             reset_eagain();
3157             av_usleep(10000);
3158             return 0;
3159         }
3160         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
3161         return AVERROR_EOF;
3162     }
3163
3164     if (ost->filter) {
3165         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
3166             return ret;
3167         if (!ist)
3168             return 0;
3169     } else {
3170         av_assert0(ost->source_index >= 0);
3171         ist = input_streams[ost->source_index];
3172     }
3173
3174     ret = process_input(ist->file_index);
3175     if (ret == AVERROR(EAGAIN)) {
3176         if (input_files[ist->file_index]->eagain)
3177             ost->unavailable = 1;
3178         return 0;
3179     }
3180     if (ret < 0)
3181         return ret == AVERROR_EOF ? 0 : ret;
3182
3183     return reap_filters();
3184 }
3185
3186 /*
3187  * The following code is the main loop of the file converter
3188  */
3189 static int transcode(void)
3190 {
3191     int ret, i;
3192     AVFormatContext *os;
3193     OutputStream *ost;
3194     InputStream *ist;
3195     int64_t timer_start;
3196
3197     ret = transcode_init();
3198     if (ret < 0)
3199         goto fail;
3200
3201     if (stdin_interaction) {
3202         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3203     }
3204
3205     timer_start = av_gettime();
3206
3207 #if HAVE_PTHREADS
3208     if ((ret = init_input_threads()) < 0)
3209         goto fail;
3210 #endif
3211
3212     while (!received_sigterm) {
3213         int64_t cur_time= av_gettime();
3214
3215         /* if 'q' pressed, exits */
3216         if (stdin_interaction)
3217             if (check_keyboard_interaction(cur_time) < 0)
3218                 break;
3219
3220         /* check if there's any stream where output is still needed */
3221         if (!need_output()) {
3222             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3223             break;
3224         }
3225
3226         ret = transcode_step();
3227         if (ret < 0) {
3228             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
3229                 continue;
3230
3231             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
3232             break;
3233         }
3234
3235         /* dump report by using the output first video and audio streams */
3236         print_report(0, timer_start, cur_time);
3237     }
3238 #if HAVE_PTHREADS
3239     free_input_threads();
3240 #endif
3241
3242     /* at the end of stream, we must flush the decoder buffers */
3243     for (i = 0; i < nb_input_streams; i++) {
3244         ist = input_streams[i];
3245         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3246             output_packet(ist, NULL);
3247         }
3248     }
3249     flush_encoders();
3250
3251     term_exit();
3252
3253     /* write the trailer if needed and close file */
3254     for (i = 0; i < nb_output_files; i++) {
3255         os = output_files[i]->ctx;
3256         av_write_trailer(os);
3257     }
3258
3259     /* dump report by using the first video and audio streams */
3260     print_report(1, timer_start, av_gettime());
3261
3262     /* close each encoder */
3263     for (i = 0; i < nb_output_streams; i++) {
3264         ost = output_streams[i];
3265         if (ost->encoding_needed) {
3266             av_freep(&ost->st->codec->stats_in);
3267             avcodec_close(ost->st->codec);
3268         }
3269     }
3270
3271     /* close each decoder */
3272     for (i = 0; i < nb_input_streams; i++) {
3273         ist = input_streams[i];
3274         if (ist->decoding_needed) {
3275             avcodec_close(ist->st->codec);
3276         }
3277     }
3278
3279     /* finished ! */
3280     ret = 0;
3281
3282  fail:
3283 #if HAVE_PTHREADS
3284     free_input_threads();
3285 #endif
3286
3287     if (output_streams) {
3288         for (i = 0; i < nb_output_streams; i++) {
3289             ost = output_streams[i];
3290             if (ost) {
3291                 if (ost->stream_copy)
3292                     av_freep(&ost->st->codec->extradata);
3293                 if (ost->logfile) {
3294                     fclose(ost->logfile);
3295                     ost->logfile = NULL;
3296                 }
3297                 av_freep(&ost->st->codec->subtitle_header);
3298                 av_freep(&ost->forced_kf_pts);
3299                 av_freep(&ost->apad);
3300                 av_dict_free(&ost->opts);
3301                 av_dict_free(&ost->swr_opts);
3302                 av_dict_free(&ost->resample_opts);
3303             }
3304         }
3305     }
3306     return ret;
3307 }
3308
3309
3310 static int64_t getutime(void)
3311 {
3312 #if HAVE_GETRUSAGE
3313     struct rusage rusage;
3314
3315     getrusage(RUSAGE_SELF, &rusage);
3316     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3317 #elif HAVE_GETPROCESSTIMES
3318     HANDLE proc;
3319     FILETIME c, e, k, u;
3320     proc = GetCurrentProcess();
3321     GetProcessTimes(proc, &c, &e, &k, &u);
3322     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3323 #else
3324     return av_gettime();
3325 #endif
3326 }
3327
3328 static int64_t getmaxrss(void)
3329 {
3330 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3331     struct rusage rusage;
3332     getrusage(RUSAGE_SELF, &rusage);
3333     return (int64_t)rusage.ru_maxrss * 1024;
3334 #elif HAVE_GETPROCESSMEMORYINFO
3335     HANDLE proc;
3336     PROCESS_MEMORY_COUNTERS memcounters;
3337     proc = GetCurrentProcess();
3338     memcounters.cb = sizeof(memcounters);
3339     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3340     return memcounters.PeakPagefileUsage;
3341 #else
3342     return 0;
3343 #endif
3344 }
3345
3346 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3347 {
3348 }
3349
3350 int main(int argc, char **argv)
3351 {
3352     int ret;
3353     int64_t ti;
3354
3355     register_exit(ffmpeg_cleanup);
3356
3357     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3358
3359     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3360     parse_loglevel(argc, argv, options);
3361
3362     if(argc>1 && !strcmp(argv[1], "-d")){
3363         run_as_daemon=1;
3364         av_log_set_callback(log_callback_null);
3365         argc--;
3366         argv++;
3367     }
3368
3369     avcodec_register_all();
3370 #if CONFIG_AVDEVICE
3371     avdevice_register_all();
3372 #endif
3373     avfilter_register_all();
3374     av_register_all();
3375     avformat_network_init();
3376
3377     show_banner(argc, argv, options);
3378
3379     term_init();
3380
3381     /* parse options and open all input/output files */
3382     ret = ffmpeg_parse_options(argc, argv);
3383     if (ret < 0)
3384         exit_program(1);
3385
3386     if (nb_output_files <= 0 && nb_input_files == 0) {
3387         show_usage();
3388         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3389         exit_program(1);
3390     }
3391
3392     /* file converter / grab */
3393     if (nb_output_files <= 0) {
3394         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3395         exit_program(1);
3396     }
3397
3398 //     if (nb_input_files == 0) {
3399 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3400 //         exit_program(1);
3401 //     }
3402
3403     current_time = ti = getutime();
3404     if (transcode() < 0)
3405         exit_program(1);
3406     ti = getutime() - ti;
3407     if (do_benchmark) {
3408         printf("bench: utime=%0.3fs\n", ti / 1000000.0);
3409     }
3410     av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" frames successfully decoded, %"PRIu64" decoding errors\n",
3411            decode_error_stat[0], decode_error_stat[1]);
3412     if (2*decode_error_stat[0] < decode_error_stat[1])
3413         exit_program(254);
3414
3415     exit_program(received_nb_signals ? 255 : 0);
3416     return 0;
3417 }