ffmpeg: add OPT_OUTPUT to -to option.
[ffmpeg.git] / ffmpeg.c
1 /*
2  * Copyright (c) 2000-2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * multimedia converter based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <ctype.h>
28 #include <string.h>
29 #include <math.h>
30 #include <stdlib.h>
31 #include <errno.h>
32 #include <limits.h>
33 #if HAVE_ISATTY
34 #if HAVE_IO_H
35 #include <io.h>
36 #endif
37 #if HAVE_UNISTD_H
38 #include <unistd.h>
39 #endif
40 #endif
41 #include "libavformat/avformat.h"
42 #include "libavdevice/avdevice.h"
43 #include "libswscale/swscale.h"
44 #include "libswresample/swresample.h"
45 #include "libavutil/opt.h"
46 #include "libavutil/channel_layout.h"
47 #include "libavutil/parseutils.h"
48 #include "libavutil/samplefmt.h"
49 #include "libavutil/colorspace.h"
50 #include "libavutil/fifo.h"
51 #include "libavutil/intreadwrite.h"
52 #include "libavutil/dict.h"
53 #include "libavutil/mathematics.h"
54 #include "libavutil/pixdesc.h"
55 #include "libavutil/avstring.h"
56 #include "libavutil/libm.h"
57 #include "libavutil/imgutils.h"
58 #include "libavutil/timestamp.h"
59 #include "libavutil/bprint.h"
60 #include "libavutil/time.h"
61 #include "libavformat/os_support.h"
62
63 #include "libavformat/ffm.h" // not public API
64
65 # include "libavfilter/avcodec.h"
66 # include "libavfilter/avfilter.h"
67 # include "libavfilter/avfiltergraph.h"
68 # include "libavfilter/buffersrc.h"
69 # include "libavfilter/buffersink.h"
70
71 #if HAVE_SYS_RESOURCE_H
72 #include <sys/time.h>
73 #include <sys/types.h>
74 #include <sys/resource.h>
75 #elif HAVE_GETPROCESSTIMES
76 #include <windows.h>
77 #endif
78 #if HAVE_GETPROCESSMEMORYINFO
79 #include <windows.h>
80 #include <psapi.h>
81 #endif
82
83 #if HAVE_SYS_SELECT_H
84 #include <sys/select.h>
85 #endif
86
87 #if HAVE_TERMIOS_H
88 #include <fcntl.h>
89 #include <sys/ioctl.h>
90 #include <sys/time.h>
91 #include <termios.h>
92 #elif HAVE_KBHIT
93 #include <conio.h>
94 #endif
95
96 #if HAVE_PTHREADS
97 #include <pthread.h>
98 #endif
99
100 #include <time.h>
101
102 #include "ffmpeg.h"
103 #include "cmdutils.h"
104
105 #include "libavutil/avassert.h"
106
107 const char program_name[] = "ffmpeg";
108 const int program_birth_year = 2000;
109
110 static FILE *vstats_file;
111
112 const char *const forced_keyframes_const_names[] = {
113     "n",
114     "n_forced",
115     "prev_forced_n",
116     "prev_forced_t",
117     "t",
118     NULL
119 };
120
121 static void do_video_stats(OutputStream *ost, int frame_size);
122 static int64_t getutime(void);
123 static int64_t getmaxrss(void);
124
125 static int run_as_daemon  = 0;
126 static int64_t video_size = 0;
127 static int64_t audio_size = 0;
128 static int64_t subtitle_size = 0;
129 static int64_t extra_size = 0;
130 static int nb_frames_dup = 0;
131 static int nb_frames_drop = 0;
132
133 static int current_time;
134 AVIOContext *progress_avio = NULL;
135
136 static uint8_t *subtitle_out;
137
138 #if HAVE_PTHREADS
139 /* signal to input threads that they should exit; set by the main thread */
140 static int transcoding_finished;
141 #endif
142
143 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
144
145 InputStream **input_streams = NULL;
146 int        nb_input_streams = 0;
147 InputFile   **input_files   = NULL;
148 int        nb_input_files   = 0;
149
150 OutputStream **output_streams = NULL;
151 int         nb_output_streams = 0;
152 OutputFile   **output_files   = NULL;
153 int         nb_output_files   = 0;
154
155 FilterGraph **filtergraphs;
156 int        nb_filtergraphs;
157
158 #if HAVE_TERMIOS_H
159
160 /* init terminal so that we can grab keys */
161 static struct termios oldtty;
162 static int restore_tty;
163 #endif
164
165
166 /* sub2video hack:
167    Convert subtitles to video with alpha to insert them in filter graphs.
168    This is a temporary solution until libavfilter gets real subtitles support.
169  */
170
171 static int sub2video_get_blank_frame(InputStream *ist)
172 {
173     int ret;
174     AVFrame *frame = ist->sub2video.frame;
175
176     av_frame_unref(frame);
177     ist->sub2video.frame->width  = ist->sub2video.w;
178     ist->sub2video.frame->height = ist->sub2video.h;
179     ist->sub2video.frame->format = AV_PIX_FMT_RGB32;
180     if ((ret = av_frame_get_buffer(frame, 32)) < 0)
181         return ret;
182     memset(frame->data[0], 0, frame->height * frame->linesize[0]);
183     return 0;
184 }
185
186 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
187                                 AVSubtitleRect *r)
188 {
189     uint32_t *pal, *dst2;
190     uint8_t *src, *src2;
191     int x, y;
192
193     if (r->type != SUBTITLE_BITMAP) {
194         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
195         return;
196     }
197     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
198         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
199         return;
200     }
201
202     dst += r->y * dst_linesize + r->x * 4;
203     src = r->pict.data[0];
204     pal = (uint32_t *)r->pict.data[1];
205     for (y = 0; y < r->h; y++) {
206         dst2 = (uint32_t *)dst;
207         src2 = src;
208         for (x = 0; x < r->w; x++)
209             *(dst2++) = pal[*(src2++)];
210         dst += dst_linesize;
211         src += r->pict.linesize[0];
212     }
213 }
214
215 static void sub2video_push_ref(InputStream *ist, int64_t pts)
216 {
217     AVFrame *frame = ist->sub2video.frame;
218     int i;
219
220     av_assert1(frame->data[0]);
221     ist->sub2video.last_pts = frame->pts = pts;
222     for (i = 0; i < ist->nb_filters; i++)
223         av_buffersrc_add_frame_flags(ist->filters[i]->filter, frame,
224                                      AV_BUFFERSRC_FLAG_KEEP_REF |
225                                      AV_BUFFERSRC_FLAG_PUSH);
226 }
227
228 static void sub2video_update(InputStream *ist, AVSubtitle *sub)
229 {
230     int w = ist->sub2video.w, h = ist->sub2video.h;
231     AVFrame *frame = ist->sub2video.frame;
232     int8_t *dst;
233     int     dst_linesize;
234     int num_rects, i;
235     int64_t pts, end_pts;
236
237     if (!frame)
238         return;
239     if (sub) {
240         pts       = av_rescale_q(sub->pts + sub->start_display_time * 1000,
241                                  AV_TIME_BASE_Q, ist->st->time_base);
242         end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000,
243                                  AV_TIME_BASE_Q, ist->st->time_base);
244         num_rects = sub->num_rects;
245     } else {
246         pts       = ist->sub2video.end_pts;
247         end_pts   = INT64_MAX;
248         num_rects = 0;
249     }
250     if (sub2video_get_blank_frame(ist) < 0) {
251         av_log(ist->st->codec, AV_LOG_ERROR,
252                "Impossible to get a blank canvas.\n");
253         return;
254     }
255     dst          = frame->data    [0];
256     dst_linesize = frame->linesize[0];
257     for (i = 0; i < num_rects; i++)
258         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
259     sub2video_push_ref(ist, pts);
260     ist->sub2video.end_pts = end_pts;
261 }
262
263 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
264 {
265     InputFile *infile = input_files[ist->file_index];
266     int i, j, nb_reqs;
267     int64_t pts2;
268
269     /* When a frame is read from a file, examine all sub2video streams in
270        the same file and send the sub2video frame again. Otherwise, decoded
271        video frames could be accumulating in the filter graph while a filter
272        (possibly overlay) is desperately waiting for a subtitle frame. */
273     for (i = 0; i < infile->nb_streams; i++) {
274         InputStream *ist2 = input_streams[infile->ist_index + i];
275         if (!ist2->sub2video.frame)
276             continue;
277         /* subtitles seem to be usually muxed ahead of other streams;
278            if not, substracting a larger time here is necessary */
279         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
280         /* do not send the heartbeat frame if the subtitle is already ahead */
281         if (pts2 <= ist2->sub2video.last_pts)
282             continue;
283         if (pts2 >= ist2->sub2video.end_pts || !ist2->sub2video.frame->data[0])
284             sub2video_update(ist2, NULL);
285         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
286             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
287         if (nb_reqs)
288             sub2video_push_ref(ist2, pts2);
289     }
290 }
291
292 static void sub2video_flush(InputStream *ist)
293 {
294     int i;
295
296     for (i = 0; i < ist->nb_filters; i++)
297         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
298 }
299
300 /* end of sub2video hack */
301
302 void term_exit(void)
303 {
304     av_log(NULL, AV_LOG_QUIET, "%s", "");
305 #if HAVE_TERMIOS_H
306     if(restore_tty)
307         tcsetattr (0, TCSANOW, &oldtty);
308 #endif
309 }
310
311 static volatile int received_sigterm = 0;
312 static volatile int received_nb_signals = 0;
313
314 static void
315 sigterm_handler(int sig)
316 {
317     received_sigterm = sig;
318     received_nb_signals++;
319     term_exit();
320     if(received_nb_signals > 3)
321         exit(123);
322 }
323
324 void term_init(void)
325 {
326 #if HAVE_TERMIOS_H
327     if(!run_as_daemon){
328         struct termios tty;
329         int istty = 1;
330 #if HAVE_ISATTY
331         istty = isatty(0) && isatty(2);
332 #endif
333         if (istty && tcgetattr (0, &tty) == 0) {
334             oldtty = tty;
335             restore_tty = 1;
336             atexit(term_exit);
337
338             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
339                              |INLCR|IGNCR|ICRNL|IXON);
340             tty.c_oflag |= OPOST;
341             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
342             tty.c_cflag &= ~(CSIZE|PARENB);
343             tty.c_cflag |= CS8;
344             tty.c_cc[VMIN] = 1;
345             tty.c_cc[VTIME] = 0;
346
347             tcsetattr (0, TCSANOW, &tty);
348         }
349         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
350     }
351 #endif
352     avformat_network_deinit();
353
354     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
355     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
356 #ifdef SIGXCPU
357     signal(SIGXCPU, sigterm_handler);
358 #endif
359 }
360
361 /* read a key without blocking */
362 static int read_key(void)
363 {
364     unsigned char ch;
365 #if HAVE_TERMIOS_H
366     int n = 1;
367     struct timeval tv;
368     fd_set rfds;
369
370     FD_ZERO(&rfds);
371     FD_SET(0, &rfds);
372     tv.tv_sec = 0;
373     tv.tv_usec = 0;
374     n = select(1, &rfds, NULL, NULL, &tv);
375     if (n > 0) {
376         n = read(0, &ch, 1);
377         if (n == 1)
378             return ch;
379
380         return n;
381     }
382 #elif HAVE_KBHIT
383 #    if HAVE_PEEKNAMEDPIPE
384     static int is_pipe;
385     static HANDLE input_handle;
386     DWORD dw, nchars;
387     if(!input_handle){
388         input_handle = GetStdHandle(STD_INPUT_HANDLE);
389         is_pipe = !GetConsoleMode(input_handle, &dw);
390     }
391
392     if (stdin->_cnt > 0) {
393         read(0, &ch, 1);
394         return ch;
395     }
396     if (is_pipe) {
397         /* When running under a GUI, you will end here. */
398         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
399             // input pipe may have been closed by the program that ran ffmpeg
400             return -1;
401         }
402         //Read it
403         if(nchars != 0) {
404             read(0, &ch, 1);
405             return ch;
406         }else{
407             return -1;
408         }
409     }
410 #    endif
411     if(kbhit())
412         return(getch());
413 #endif
414     return -1;
415 }
416
417 static int decode_interrupt_cb(void *ctx)
418 {
419     return received_nb_signals > 1;
420 }
421
422 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
423
424 static void exit_program(void)
425 {
426     int i, j;
427
428     if (do_benchmark) {
429         int maxrss = getmaxrss() / 1024;
430         printf("bench: maxrss=%ikB\n", maxrss);
431     }
432
433     for (i = 0; i < nb_filtergraphs; i++) {
434         avfilter_graph_free(&filtergraphs[i]->graph);
435         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
436             av_freep(&filtergraphs[i]->inputs[j]->name);
437             av_freep(&filtergraphs[i]->inputs[j]);
438         }
439         av_freep(&filtergraphs[i]->inputs);
440         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
441             av_freep(&filtergraphs[i]->outputs[j]->name);
442             av_freep(&filtergraphs[i]->outputs[j]);
443         }
444         av_freep(&filtergraphs[i]->outputs);
445         av_freep(&filtergraphs[i]);
446     }
447     av_freep(&filtergraphs);
448
449     av_freep(&subtitle_out);
450
451     /* close files */
452     for (i = 0; i < nb_output_files; i++) {
453         AVFormatContext *s = output_files[i]->ctx;
454         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
455             avio_close(s->pb);
456         avformat_free_context(s);
457         av_dict_free(&output_files[i]->opts);
458         av_freep(&output_files[i]);
459     }
460     for (i = 0; i < nb_output_streams; i++) {
461         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
462         while (bsfc) {
463             AVBitStreamFilterContext *next = bsfc->next;
464             av_bitstream_filter_close(bsfc);
465             bsfc = next;
466         }
467         output_streams[i]->bitstream_filters = NULL;
468         avcodec_free_frame(&output_streams[i]->filtered_frame);
469
470         av_freep(&output_streams[i]->forced_keyframes);
471         av_expr_free(output_streams[i]->forced_keyframes_pexpr);
472         av_freep(&output_streams[i]->avfilter);
473         av_freep(&output_streams[i]->logfile_prefix);
474         av_freep(&output_streams[i]);
475     }
476     for (i = 0; i < nb_input_files; i++) {
477         avformat_close_input(&input_files[i]->ctx);
478         av_freep(&input_files[i]);
479     }
480     for (i = 0; i < nb_input_streams; i++) {
481         av_frame_free(&input_streams[i]->decoded_frame);
482         av_frame_free(&input_streams[i]->filter_frame);
483         av_dict_free(&input_streams[i]->opts);
484         avsubtitle_free(&input_streams[i]->prev_sub.subtitle);
485         avcodec_free_frame(&input_streams[i]->sub2video.frame);
486         av_freep(&input_streams[i]->filters);
487         av_freep(&input_streams[i]);
488     }
489
490     if (vstats_file)
491         fclose(vstats_file);
492     av_free(vstats_filename);
493
494     av_freep(&input_streams);
495     av_freep(&input_files);
496     av_freep(&output_streams);
497     av_freep(&output_files);
498
499     uninit_opts();
500
501     avfilter_uninit();
502     avformat_network_deinit();
503
504     if (received_sigterm) {
505         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
506                (int) received_sigterm);
507     }
508 }
509
510 void assert_avoptions(AVDictionary *m)
511 {
512     AVDictionaryEntry *t;
513     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
514         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
515         exit(1);
516     }
517 }
518
519 static void abort_codec_experimental(AVCodec *c, int encoder)
520 {
521     exit(1);
522 }
523
524 static void update_benchmark(const char *fmt, ...)
525 {
526     if (do_benchmark_all) {
527         int64_t t = getutime();
528         va_list va;
529         char buf[1024];
530
531         if (fmt) {
532             va_start(va, fmt);
533             vsnprintf(buf, sizeof(buf), fmt, va);
534             va_end(va);
535             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
536         }
537         current_time = t;
538     }
539 }
540
541 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
542 {
543     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
544     AVCodecContext          *avctx = ost->st->codec;
545     int ret;
546
547     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
548         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
549         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
550
551     if ((avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) && pkt->dts != AV_NOPTS_VALUE) {
552         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
553         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
554             av_log(s, max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG,
555                    "st:%d PTS: %"PRId64" DTS: %"PRId64" < %"PRId64" invalid, clipping\n", pkt->stream_index, pkt->pts, pkt->dts, max);
556             if(pkt->pts >= pkt->dts)
557                 pkt->pts = FFMAX(pkt->pts, max);
558             pkt->dts = max;
559         }
560     }
561
562     /*
563      * Audio encoders may split the packets --  #frames in != #packets out.
564      * But there is no reordering, so we can limit the number of output packets
565      * by simply dropping them here.
566      * Counting encoded video frames needs to be done separately because of
567      * reordering, see do_video_out()
568      */
569     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
570         if (ost->frame_number >= ost->max_frames) {
571             av_free_packet(pkt);
572             return;
573         }
574         ost->frame_number++;
575     }
576
577     while (bsfc) {
578         AVPacket new_pkt = *pkt;
579         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
580                                            &new_pkt.data, &new_pkt.size,
581                                            pkt->data, pkt->size,
582                                            pkt->flags & AV_PKT_FLAG_KEY);
583         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
584             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
585             if(t) {
586                 memcpy(t, new_pkt.data, new_pkt.size);
587                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
588                 new_pkt.data = t;
589                 new_pkt.buf = NULL;
590                 a = 1;
591             } else
592                 a = AVERROR(ENOMEM);
593         }
594         if (a > 0) {
595             av_free_packet(pkt);
596             new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
597                                            av_buffer_default_free, NULL, 0);
598             if (!new_pkt.buf)
599                 exit(1);
600         } else if (a < 0) {
601             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
602                    bsfc->filter->name, pkt->stream_index,
603                    avctx->codec ? avctx->codec->name : "copy");
604             print_error("", a);
605             if (exit_on_error)
606                 exit(1);
607         }
608         *pkt = new_pkt;
609
610         bsfc = bsfc->next;
611     }
612
613     pkt->stream_index = ost->index;
614
615     if (debug_ts) {
616         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
617                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
618                 av_get_media_type_string(ost->st->codec->codec_type),
619                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
620                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
621                 pkt->size
622               );
623     }
624
625     ret = av_interleaved_write_frame(s, pkt);
626     if (ret < 0) {
627         print_error("av_interleaved_write_frame()", ret);
628         exit(1);
629     }
630 }
631
632 static void close_output_stream(OutputStream *ost)
633 {
634     OutputFile *of = output_files[ost->file_index];
635
636     ost->finished = 1;
637     if (of->shortest) {
638         int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, AV_TIME_BASE_Q);
639         of->recording_time = FFMIN(of->recording_time, end);
640     }
641 }
642
643 static int check_recording_time(OutputStream *ost)
644 {
645     OutputFile *of = output_files[ost->file_index];
646
647     if (of->recording_time != INT64_MAX &&
648         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
649                       AV_TIME_BASE_Q) >= 0) {
650         close_output_stream(ost);
651         return 0;
652     }
653     return 1;
654 }
655
656 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
657                          AVFrame *frame)
658 {
659     AVCodecContext *enc = ost->st->codec;
660     AVPacket pkt;
661     int got_packet = 0;
662
663     av_init_packet(&pkt);
664     pkt.data = NULL;
665     pkt.size = 0;
666
667     if (!check_recording_time(ost))
668         return;
669
670     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
671         frame->pts = ost->sync_opts;
672     ost->sync_opts = frame->pts + frame->nb_samples;
673
674     av_assert0(pkt.size || !pkt.data);
675     update_benchmark(NULL);
676     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
677         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
678         exit(1);
679     }
680     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
681
682     if (got_packet) {
683         if (pkt.pts != AV_NOPTS_VALUE)
684             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
685         if (pkt.dts != AV_NOPTS_VALUE)
686             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
687         if (pkt.duration > 0)
688             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
689
690         if (debug_ts) {
691             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
692                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
693                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
694                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
695         }
696
697         audio_size += pkt.size;
698         write_frame(s, &pkt, ost);
699
700         av_free_packet(&pkt);
701     }
702 }
703
704 #if FF_API_DEINTERLACE
705 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
706 {
707     AVCodecContext *dec;
708     AVPicture *picture2;
709     AVPicture picture_tmp;
710     uint8_t *buf = 0;
711
712     dec = ist->st->codec;
713
714     /* deinterlace : must be done before any resize */
715     if (FF_API_DEINTERLACE && do_deinterlace) {
716         int size;
717
718         /* create temporary picture */
719         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
720         if (size < 0)
721             return;
722         buf  = av_malloc(size);
723         if (!buf)
724             return;
725
726         picture2 = &picture_tmp;
727         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
728
729         if (avpicture_deinterlace(picture2, picture,
730                                  dec->pix_fmt, dec->width, dec->height) < 0) {
731             /* if error, do not deinterlace */
732             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
733             av_free(buf);
734             buf = NULL;
735             picture2 = picture;
736         }
737     } else {
738         picture2 = picture;
739     }
740
741     if (picture != picture2)
742         *picture = *picture2;
743     *bufp = buf;
744 }
745 #endif
746
747 static void do_subtitle_out(AVFormatContext *s,
748                             OutputStream *ost,
749                             InputStream *ist,
750                             AVSubtitle *sub)
751 {
752     int subtitle_out_max_size = 1024 * 1024;
753     int subtitle_out_size, nb, i;
754     AVCodecContext *enc;
755     AVPacket pkt;
756     int64_t pts;
757
758     if (sub->pts == AV_NOPTS_VALUE) {
759         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
760         if (exit_on_error)
761             exit(1);
762         return;
763     }
764
765     enc = ost->st->codec;
766
767     if (!subtitle_out) {
768         subtitle_out = av_malloc(subtitle_out_max_size);
769     }
770
771     /* Note: DVB subtitle need one packet to draw them and one other
772        packet to clear them */
773     /* XXX: signal it in the codec context ? */
774     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
775         nb = 2;
776     else
777         nb = 1;
778
779     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
780     pts = sub->pts - output_files[ost->file_index]->start_time;
781     for (i = 0; i < nb; i++) {
782         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
783         if (!check_recording_time(ost))
784             return;
785
786         sub->pts = pts;
787         // start_display_time is required to be 0
788         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
789         sub->end_display_time  -= sub->start_display_time;
790         sub->start_display_time = 0;
791         if (i == 1)
792             sub->num_rects = 0;
793         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
794                                                     subtitle_out_max_size, sub);
795         if (subtitle_out_size < 0) {
796             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
797             exit(1);
798         }
799
800         av_init_packet(&pkt);
801         pkt.data = subtitle_out;
802         pkt.size = subtitle_out_size;
803         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
804         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
805         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
806             /* XXX: the pts correction is handled here. Maybe handling
807                it in the codec would be better */
808             if (i == 0)
809                 pkt.pts += 90 * sub->start_display_time;
810             else
811                 pkt.pts += 90 * sub->end_display_time;
812         }
813         subtitle_size += pkt.size;
814         write_frame(s, &pkt, ost);
815     }
816 }
817
818 static void do_video_out(AVFormatContext *s,
819                          OutputStream *ost,
820                          AVFrame *in_picture)
821 {
822     int ret, format_video_sync;
823     AVPacket pkt;
824     AVCodecContext *enc = ost->st->codec;
825     int nb_frames, i;
826     double sync_ipts, delta;
827     double duration = 0;
828     int frame_size = 0;
829     InputStream *ist = NULL;
830
831     if (ost->source_index >= 0)
832         ist = input_streams[ost->source_index];
833
834     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
835         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
836
837     sync_ipts = in_picture->pts;
838     delta = sync_ipts - ost->sync_opts + duration;
839
840     /* by default, we output a single frame */
841     nb_frames = 1;
842
843     format_video_sync = video_sync_method;
844     if (format_video_sync == VSYNC_AUTO)
845         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
846
847     switch (format_video_sync) {
848     case VSYNC_CFR:
849         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
850         if (delta < -1.1)
851             nb_frames = 0;
852         else if (delta > 1.1)
853             nb_frames = lrintf(delta);
854         break;
855     case VSYNC_VFR:
856         if (delta <= -0.6)
857             nb_frames = 0;
858         else if (delta > 0.6)
859             ost->sync_opts = lrint(sync_ipts);
860         break;
861     case VSYNC_DROP:
862     case VSYNC_PASSTHROUGH:
863         ost->sync_opts = lrint(sync_ipts);
864         break;
865     default:
866         av_assert0(0);
867     }
868
869     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
870     if (nb_frames == 0) {
871         nb_frames_drop++;
872         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
873         return;
874     } else if (nb_frames > 1) {
875         if (nb_frames > dts_error_threshold * 30) {
876             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
877             nb_frames_drop++;
878             return;
879         }
880         nb_frames_dup += nb_frames - 1;
881         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
882     }
883
884   /* duplicates frame if needed */
885   for (i = 0; i < nb_frames; i++) {
886     av_init_packet(&pkt);
887     pkt.data = NULL;
888     pkt.size = 0;
889
890     in_picture->pts = ost->sync_opts;
891
892     if (!check_recording_time(ost))
893         return;
894
895     if (s->oformat->flags & AVFMT_RAWPICTURE &&
896         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
897         /* raw pictures are written as AVPicture structure to
898            avoid any copies. We support temporarily the older
899            method. */
900         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
901         enc->coded_frame->top_field_first  = in_picture->top_field_first;
902         if (enc->coded_frame->interlaced_frame)
903             enc->field_order = enc->coded_frame->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
904         else
905             enc->field_order = AV_FIELD_PROGRESSIVE;
906         pkt.data   = (uint8_t *)in_picture;
907         pkt.size   =  sizeof(AVPicture);
908         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
909         pkt.flags |= AV_PKT_FLAG_KEY;
910
911         video_size += pkt.size;
912         write_frame(s, &pkt, ost);
913     } else {
914         int got_packet, forced_keyframe = 0;
915         double pts_time;
916
917         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME) &&
918             ost->top_field_first >= 0)
919             in_picture->top_field_first = !!ost->top_field_first;
920
921         if (in_picture->interlaced_frame) {
922             if (enc->codec->id == AV_CODEC_ID_MJPEG)
923                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
924             else
925                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
926         } else
927             enc->field_order = AV_FIELD_PROGRESSIVE;
928
929         in_picture->quality = ost->st->codec->global_quality;
930         if (!enc->me_threshold)
931             in_picture->pict_type = 0;
932
933         pts_time = in_picture->pts != AV_NOPTS_VALUE ?
934             in_picture->pts * av_q2d(enc->time_base) : NAN;
935         if (ost->forced_kf_index < ost->forced_kf_count &&
936             in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
937             ost->forced_kf_index++;
938             forced_keyframe = 1;
939         } else if (ost->forced_keyframes_pexpr) {
940             double res;
941             ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
942             res = av_expr_eval(ost->forced_keyframes_pexpr,
943                                ost->forced_keyframes_expr_const_values, NULL);
944             av_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
945                     ost->forced_keyframes_expr_const_values[FKF_N],
946                     ost->forced_keyframes_expr_const_values[FKF_N_FORCED],
947                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N],
948                     ost->forced_keyframes_expr_const_values[FKF_T],
949                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T],
950                     res);
951             if (res) {
952                 forced_keyframe = 1;
953                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] =
954                     ost->forced_keyframes_expr_const_values[FKF_N];
955                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] =
956                     ost->forced_keyframes_expr_const_values[FKF_T];
957                 ost->forced_keyframes_expr_const_values[FKF_N_FORCED] += 1;
958             }
959
960             ost->forced_keyframes_expr_const_values[FKF_N] += 1;
961         }
962         if (forced_keyframe) {
963             in_picture->pict_type = AV_PICTURE_TYPE_I;
964             av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
965         }
966
967         update_benchmark(NULL);
968         ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
969         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
970         if (ret < 0) {
971             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
972             exit(1);
973         }
974
975         if (got_packet) {
976             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
977                 pkt.pts = ost->sync_opts;
978
979             if (pkt.pts != AV_NOPTS_VALUE)
980                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
981             if (pkt.dts != AV_NOPTS_VALUE)
982                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
983
984             if (debug_ts) {
985                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
986                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
987                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
988                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
989             }
990
991             frame_size = pkt.size;
992             video_size += pkt.size;
993             write_frame(s, &pkt, ost);
994             av_free_packet(&pkt);
995
996             /* if two pass, output log */
997             if (ost->logfile && enc->stats_out) {
998                 fprintf(ost->logfile, "%s", enc->stats_out);
999             }
1000         }
1001     }
1002     ost->sync_opts++;
1003     /*
1004      * For video, number of frames in == number of packets out.
1005      * But there may be reordering, so we can't throw away frames on encoder
1006      * flush, we need to limit them here, before they go into encoder.
1007      */
1008     ost->frame_number++;
1009   }
1010
1011     if (vstats_filename && frame_size)
1012         do_video_stats(ost, frame_size);
1013 }
1014
1015 static double psnr(double d)
1016 {
1017     return -10.0 * log(d) / log(10.0);
1018 }
1019
1020 static void do_video_stats(OutputStream *ost, int frame_size)
1021 {
1022     AVCodecContext *enc;
1023     int frame_number;
1024     double ti1, bitrate, avg_bitrate;
1025
1026     /* this is executed just the first time do_video_stats is called */
1027     if (!vstats_file) {
1028         vstats_file = fopen(vstats_filename, "w");
1029         if (!vstats_file) {
1030             perror("fopen");
1031             exit(1);
1032         }
1033     }
1034
1035     enc = ost->st->codec;
1036     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1037         frame_number = ost->st->nb_frames;
1038         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1039         if (enc->flags&CODEC_FLAG_PSNR)
1040             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1041
1042         fprintf(vstats_file,"f_size= %6d ", frame_size);
1043         /* compute pts value */
1044         ti1 = ost->st->pts.val * av_q2d(enc->time_base);
1045         if (ti1 < 0.01)
1046             ti1 = 0.01;
1047
1048         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1049         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1050         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1051                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1052         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1053     }
1054 }
1055
1056 /**
1057  * Get and encode new output from any of the filtergraphs, without causing
1058  * activity.
1059  *
1060  * @return  0 for success, <0 for severe errors
1061  */
1062 static int reap_filters(void)
1063 {
1064     AVFrame *filtered_frame = NULL;
1065     int i;
1066     int64_t frame_pts;
1067
1068     /* Reap all buffers present in the buffer sinks */
1069     for (i = 0; i < nb_output_streams; i++) {
1070         OutputStream *ost = output_streams[i];
1071         OutputFile    *of = output_files[ost->file_index];
1072         int ret = 0;
1073
1074         if (!ost->filter)
1075             continue;
1076
1077         if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1078             return AVERROR(ENOMEM);
1079         } else
1080             avcodec_get_frame_defaults(ost->filtered_frame);
1081         filtered_frame = ost->filtered_frame;
1082
1083         while (1) {
1084             ret = av_buffersink_get_frame_flags(ost->filter->filter, filtered_frame,
1085                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1086             if (ret < 0) {
1087                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1088                     char buf[256];
1089                     av_strerror(ret, buf, sizeof(buf));
1090                     av_log(NULL, AV_LOG_WARNING,
1091                            "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
1092                 }
1093                 break;
1094             }
1095             frame_pts = AV_NOPTS_VALUE;
1096             if (filtered_frame->pts != AV_NOPTS_VALUE) {
1097                 filtered_frame->pts = frame_pts = av_rescale_q(filtered_frame->pts,
1098                                                 ost->filter->filter->inputs[0]->time_base,
1099                                                 ost->st->codec->time_base) -
1100                                     av_rescale_q(of->start_time,
1101                                                 AV_TIME_BASE_Q,
1102                                                 ost->st->codec->time_base);
1103
1104                 if (of->start_time && filtered_frame->pts < 0) {
1105                     av_frame_unref(filtered_frame);
1106                     continue;
1107                 }
1108             }
1109             //if (ost->source_index >= 0)
1110             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1111
1112
1113             switch (ost->filter->filter->inputs[0]->type) {
1114             case AVMEDIA_TYPE_VIDEO:
1115                 filtered_frame->pts = frame_pts;
1116                 if (!ost->frame_aspect_ratio)
1117                     ost->st->codec->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
1118
1119                 do_video_out(of->ctx, ost, filtered_frame);
1120                 break;
1121             case AVMEDIA_TYPE_AUDIO:
1122                 filtered_frame->pts = frame_pts;
1123                 if (!(ost->st->codec->codec->capabilities & CODEC_CAP_PARAM_CHANGE) &&
1124                     ost->st->codec->channels != av_frame_get_channels(filtered_frame)) {
1125                     av_log(NULL, AV_LOG_ERROR,
1126                            "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
1127                     break;
1128                 }
1129                 do_audio_out(of->ctx, ost, filtered_frame);
1130                 break;
1131             default:
1132                 // TODO support subtitle filters
1133                 av_assert0(0);
1134             }
1135
1136             av_frame_unref(filtered_frame);
1137         }
1138     }
1139
1140     return 0;
1141 }
1142
1143 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1144 {
1145     char buf[1024];
1146     AVBPrint buf_script;
1147     OutputStream *ost;
1148     AVFormatContext *oc;
1149     int64_t total_size;
1150     AVCodecContext *enc;
1151     int frame_number, vid, i;
1152     double bitrate;
1153     int64_t pts = INT64_MIN;
1154     static int64_t last_time = -1;
1155     static int qp_histogram[52];
1156     int hours, mins, secs, us;
1157
1158     if (!print_stats && !is_last_report && !progress_avio)
1159         return;
1160
1161     if (!is_last_report) {
1162         if (last_time == -1) {
1163             last_time = cur_time;
1164             return;
1165         }
1166         if ((cur_time - last_time) < 500000)
1167             return;
1168         last_time = cur_time;
1169     }
1170
1171
1172     oc = output_files[0]->ctx;
1173
1174     total_size = avio_size(oc->pb);
1175     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1176         total_size = avio_tell(oc->pb);
1177
1178     buf[0] = '\0';
1179     vid = 0;
1180     av_bprint_init(&buf_script, 0, 1);
1181     for (i = 0; i < nb_output_streams; i++) {
1182         float q = -1;
1183         ost = output_streams[i];
1184         enc = ost->st->codec;
1185         if (!ost->stream_copy && enc->coded_frame)
1186             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1187         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1188             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1189             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1190                        ost->file_index, ost->index, q);
1191         }
1192         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1193             float fps, t = (cur_time-timer_start) / 1000000.0;
1194
1195             frame_number = ost->frame_number;
1196             fps = t > 1 ? frame_number / t : 0;
1197             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1198                      frame_number, fps < 9.95, fps, q);
1199             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1200             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1201             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1202                        ost->file_index, ost->index, q);
1203             if (is_last_report)
1204                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1205             if (qp_hist) {
1206                 int j;
1207                 int qp = lrintf(q);
1208                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1209                     qp_histogram[qp]++;
1210                 for (j = 0; j < 32; j++)
1211                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1212             }
1213             if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1214                 int j;
1215                 double error, error_sum = 0;
1216                 double scale, scale_sum = 0;
1217                 double p;
1218                 char type[3] = { 'Y','U','V' };
1219                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1220                 for (j = 0; j < 3; j++) {
1221                     if (is_last_report) {
1222                         error = enc->error[j];
1223                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1224                     } else {
1225                         error = enc->coded_frame->error[j];
1226                         scale = enc->width * enc->height * 255.0 * 255.0;
1227                     }
1228                     if (j)
1229                         scale /= 4;
1230                     error_sum += error;
1231                     scale_sum += scale;
1232                     p = psnr(error / scale);
1233                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1234                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1235                                ost->file_index, ost->index, type[j] | 32, p);
1236                 }
1237                 p = psnr(error_sum / scale_sum);
1238                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1239                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1240                            ost->file_index, ost->index, p);
1241             }
1242             vid = 1;
1243         }
1244         /* compute min output value */
1245         if ((is_last_report || !ost->finished) && ost->st->pts.val != AV_NOPTS_VALUE)
1246             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1247                                           ost->st->time_base, AV_TIME_BASE_Q));
1248     }
1249
1250     secs = pts / AV_TIME_BASE;
1251     us = pts % AV_TIME_BASE;
1252     mins = secs / 60;
1253     secs %= 60;
1254     hours = mins / 60;
1255     mins %= 60;
1256
1257     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1258
1259     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1260                                  "size=N/A time=");
1261     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1262                                  "size=%8.0fkB time=", total_size / 1024.0);
1263     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1264              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1265              (100 * us) / AV_TIME_BASE);
1266     if (bitrate < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1267                               "bitrate=N/A");
1268     else             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1269                               "bitrate=%6.1fkbits/s", bitrate);
1270     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
1271     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1272     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1273     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1274                hours, mins, secs, us);
1275
1276     if (nb_frames_dup || nb_frames_drop)
1277         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1278                 nb_frames_dup, nb_frames_drop);
1279     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1280     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1281
1282     if (print_stats || is_last_report) {
1283         if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
1284             fprintf(stderr, "%s    \r", buf);
1285         } else
1286             av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1287
1288     fflush(stderr);
1289     }
1290
1291     if (progress_avio) {
1292         av_bprintf(&buf_script, "progress=%s\n",
1293                    is_last_report ? "end" : "continue");
1294         avio_write(progress_avio, buf_script.str,
1295                    FFMIN(buf_script.len, buf_script.size - 1));
1296         avio_flush(progress_avio);
1297         av_bprint_finalize(&buf_script, NULL);
1298         if (is_last_report) {
1299             avio_close(progress_avio);
1300             progress_avio = NULL;
1301         }
1302     }
1303
1304     if (is_last_report) {
1305         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1306         av_log(NULL, AV_LOG_INFO, "\n");
1307         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1308                video_size / 1024.0,
1309                audio_size / 1024.0,
1310                subtitle_size / 1024.0,
1311                extra_size / 1024.0,
1312                100.0 * (total_size - raw) / raw
1313         );
1314         if(video_size + audio_size + subtitle_size + extra_size == 0){
1315             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1316         }
1317     }
1318 }
1319
1320 static void flush_encoders(void)
1321 {
1322     int i, ret;
1323
1324     for (i = 0; i < nb_output_streams; i++) {
1325         OutputStream   *ost = output_streams[i];
1326         AVCodecContext *enc = ost->st->codec;
1327         AVFormatContext *os = output_files[ost->file_index]->ctx;
1328         int stop_encoding = 0;
1329
1330         if (!ost->encoding_needed)
1331             continue;
1332
1333         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1334             continue;
1335         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1336             continue;
1337
1338         for (;;) {
1339             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1340             const char *desc;
1341             int64_t *size;
1342
1343             switch (ost->st->codec->codec_type) {
1344             case AVMEDIA_TYPE_AUDIO:
1345                 encode = avcodec_encode_audio2;
1346                 desc   = "Audio";
1347                 size   = &audio_size;
1348                 break;
1349             case AVMEDIA_TYPE_VIDEO:
1350                 encode = avcodec_encode_video2;
1351                 desc   = "Video";
1352                 size   = &video_size;
1353                 break;
1354             default:
1355                 stop_encoding = 1;
1356             }
1357
1358             if (encode) {
1359                 AVPacket pkt;
1360                 int got_packet;
1361                 av_init_packet(&pkt);
1362                 pkt.data = NULL;
1363                 pkt.size = 0;
1364
1365                 update_benchmark(NULL);
1366                 ret = encode(enc, &pkt, NULL, &got_packet);
1367                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1368                 if (ret < 0) {
1369                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1370                     exit(1);
1371                 }
1372                 *size += pkt.size;
1373                 if (ost->logfile && enc->stats_out) {
1374                     fprintf(ost->logfile, "%s", enc->stats_out);
1375                 }
1376                 if (!got_packet) {
1377                     stop_encoding = 1;
1378                     break;
1379                 }
1380                 if (pkt.pts != AV_NOPTS_VALUE)
1381                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1382                 if (pkt.dts != AV_NOPTS_VALUE)
1383                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1384                 if (pkt.duration > 0)
1385                     pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1386                 write_frame(os, &pkt, ost);
1387                 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
1388                     do_video_stats(ost, pkt.size);
1389                 }
1390             }
1391
1392             if (stop_encoding)
1393                 break;
1394         }
1395     }
1396 }
1397
1398 /*
1399  * Check whether a packet from ist should be written into ost at this time
1400  */
1401 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1402 {
1403     OutputFile *of = output_files[ost->file_index];
1404     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1405
1406     if (ost->source_index != ist_index)
1407         return 0;
1408
1409     if (of->start_time && ist->pts < of->start_time)
1410         return 0;
1411
1412     return 1;
1413 }
1414
1415 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1416 {
1417     OutputFile *of = output_files[ost->file_index];
1418     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1419     AVPicture pict;
1420     AVPacket opkt;
1421
1422     av_init_packet(&opkt);
1423
1424     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1425         !ost->copy_initial_nonkeyframes)
1426         return;
1427
1428     if (!ost->frame_number && ist->pts < of->start_time &&
1429         !ost->copy_prior_start)
1430         return;
1431
1432     if (of->recording_time != INT64_MAX &&
1433         ist->pts >= of->recording_time + of->start_time) {
1434         close_output_stream(ost);
1435         return;
1436     }
1437
1438     /* force the input stream PTS */
1439     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1440         audio_size += pkt->size;
1441     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1442         video_size += pkt->size;
1443         ost->sync_opts++;
1444     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1445         subtitle_size += pkt->size;
1446     }
1447
1448     if (pkt->pts != AV_NOPTS_VALUE)
1449         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1450     else
1451         opkt.pts = AV_NOPTS_VALUE;
1452
1453     if (pkt->dts == AV_NOPTS_VALUE)
1454         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1455     else
1456         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1457     opkt.dts -= ost_tb_start_time;
1458
1459     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1460         int duration = av_get_audio_frame_duration(ist->st->codec, pkt->size);
1461         if(!duration)
1462             duration = ist->st->codec->frame_size;
1463         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1464                                                (AVRational){1, ist->st->codec->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
1465                                                ost->st->time_base) - ost_tb_start_time;
1466     }
1467
1468     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1469     opkt.flags    = pkt->flags;
1470
1471     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1472     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1473        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1474        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1475        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1476        ) {
1477         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY)) {
1478             opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1479             if (!opkt.buf)
1480                 exit(1);
1481         }
1482     } else {
1483         opkt.data = pkt->data;
1484         opkt.size = pkt->size;
1485     }
1486
1487     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1488         /* store AVPicture in AVPacket, as expected by the output format */
1489         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1490         opkt.data = (uint8_t *)&pict;
1491         opkt.size = sizeof(AVPicture);
1492         opkt.flags |= AV_PKT_FLAG_KEY;
1493     }
1494
1495     write_frame(of->ctx, &opkt, ost);
1496     ost->st->codec->frame_number++;
1497 }
1498
1499 static void rate_emu_sleep(InputStream *ist)
1500 {
1501     if (input_files[ist->file_index]->rate_emu) {
1502         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
1503         int64_t now = av_gettime() - ist->start;
1504         if (pts > now)
1505             av_usleep(pts - now);
1506     }
1507 }
1508
1509 int guess_input_channel_layout(InputStream *ist)
1510 {
1511     AVCodecContext *dec = ist->st->codec;
1512
1513     if (!dec->channel_layout) {
1514         char layout_name[256];
1515
1516         if (dec->channels > ist->guess_layout_max)
1517             return 0;
1518         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1519         if (!dec->channel_layout)
1520             return 0;
1521         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1522                                      dec->channels, dec->channel_layout);
1523         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1524                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1525     }
1526     return 1;
1527 }
1528
1529 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1530 {
1531     AVFrame *decoded_frame, *f;
1532     AVCodecContext *avctx = ist->st->codec;
1533     int i, ret, err = 0, resample_changed;
1534     AVRational decoded_frame_tb;
1535
1536     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1537         return AVERROR(ENOMEM);
1538     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1539         return AVERROR(ENOMEM);
1540     decoded_frame = ist->decoded_frame;
1541
1542     update_benchmark(NULL);
1543     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1544     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1545
1546     if (ret >= 0 && avctx->sample_rate <= 0) {
1547         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1548         ret = AVERROR_INVALIDDATA;
1549     }
1550
1551     if (!*got_output || ret < 0) {
1552         if (!pkt->size) {
1553             for (i = 0; i < ist->nb_filters; i++)
1554 #if 1
1555                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1556 #else
1557                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1558 #endif
1559         }
1560         return ret;
1561     }
1562
1563 #if 1
1564     /* increment next_dts to use for the case where the input stream does not
1565        have timestamps or there are multiple frames in the packet */
1566     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1567                      avctx->sample_rate;
1568     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1569                      avctx->sample_rate;
1570 #endif
1571
1572     rate_emu_sleep(ist);
1573
1574     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1575                        ist->resample_channels       != avctx->channels               ||
1576                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1577                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1578     if (resample_changed) {
1579         char layout1[64], layout2[64];
1580
1581         if (!guess_input_channel_layout(ist)) {
1582             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1583                    "layout for Input Stream #%d.%d\n", ist->file_index,
1584                    ist->st->index);
1585             exit(1);
1586         }
1587         decoded_frame->channel_layout = avctx->channel_layout;
1588
1589         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1590                                      ist->resample_channel_layout);
1591         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1592                                      decoded_frame->channel_layout);
1593
1594         av_log(NULL, AV_LOG_INFO,
1595                "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",
1596                ist->file_index, ist->st->index,
1597                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1598                ist->resample_channels, layout1,
1599                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1600                avctx->channels, layout2);
1601
1602         ist->resample_sample_fmt     = decoded_frame->format;
1603         ist->resample_sample_rate    = decoded_frame->sample_rate;
1604         ist->resample_channel_layout = decoded_frame->channel_layout;
1605         ist->resample_channels       = avctx->channels;
1606
1607         for (i = 0; i < nb_filtergraphs; i++)
1608             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1609                 FilterGraph *fg = filtergraphs[i];
1610                 int j;
1611                 if (configure_filtergraph(fg) < 0) {
1612                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1613                     exit(1);
1614                 }
1615                 for (j = 0; j < fg->nb_outputs; j++) {
1616                     OutputStream *ost = fg->outputs[j]->ost;
1617                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1618                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1619                         av_buffersink_set_frame_size(ost->filter->filter,
1620                                                      ost->st->codec->frame_size);
1621                 }
1622             }
1623     }
1624
1625     /* if the decoder provides a pts, use it instead of the last packet pts.
1626        the decoder could be delaying output by a packet or more. */
1627     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1628         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1629         decoded_frame_tb   = avctx->time_base;
1630     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1631         decoded_frame->pts = decoded_frame->pkt_pts;
1632         pkt->pts           = AV_NOPTS_VALUE;
1633         decoded_frame_tb   = ist->st->time_base;
1634     } else if (pkt->pts != AV_NOPTS_VALUE) {
1635         decoded_frame->pts = pkt->pts;
1636         pkt->pts           = AV_NOPTS_VALUE;
1637         decoded_frame_tb   = ist->st->time_base;
1638     }else {
1639         decoded_frame->pts = ist->dts;
1640         decoded_frame_tb   = AV_TIME_BASE_Q;
1641     }
1642     if (decoded_frame->pts != AV_NOPTS_VALUE)
1643         decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
1644                                               (AVRational){1, ist->st->codec->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
1645                                               (AVRational){1, ist->st->codec->sample_rate});
1646     for (i = 0; i < ist->nb_filters; i++) {
1647         if (i < ist->nb_filters - 1) {
1648             f = ist->filter_frame;
1649             err = av_frame_ref(f, decoded_frame);
1650             if (err < 0)
1651                 break;
1652         } else
1653             f = decoded_frame;
1654         err = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f,
1655                                      AV_BUFFERSRC_FLAG_PUSH);
1656         if (err < 0)
1657             break;
1658     }
1659     decoded_frame->pts = AV_NOPTS_VALUE;
1660
1661     av_frame_unref(ist->filter_frame);
1662     av_frame_unref(decoded_frame);
1663     return err < 0 ? err : ret;
1664 }
1665
1666 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1667 {
1668     AVFrame *decoded_frame, *f;
1669     void *buffer_to_free = NULL;
1670     int i, ret = 0, err = 0, resample_changed;
1671     int64_t best_effort_timestamp;
1672     AVRational *frame_sample_aspect;
1673
1674     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1675         return AVERROR(ENOMEM);
1676     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1677         return AVERROR(ENOMEM);
1678     decoded_frame = ist->decoded_frame;
1679     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1680
1681     update_benchmark(NULL);
1682     ret = avcodec_decode_video2(ist->st->codec,
1683                                 decoded_frame, got_output, pkt);
1684     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1685     if (!*got_output || ret < 0) {
1686         if (!pkt->size) {
1687             for (i = 0; i < ist->nb_filters; i++)
1688 #if 1
1689                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1690 #else
1691                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1692 #endif
1693         }
1694         return ret;
1695     }
1696
1697     if(ist->top_field_first>=0)
1698         decoded_frame->top_field_first = ist->top_field_first;
1699
1700     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1701     if(best_effort_timestamp != AV_NOPTS_VALUE)
1702         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1703
1704     if (debug_ts) {
1705         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1706                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1707                 ist->st->index, av_ts2str(decoded_frame->pts),
1708                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1709                 best_effort_timestamp,
1710                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1711                 decoded_frame->key_frame, decoded_frame->pict_type);
1712     }
1713
1714     pkt->size = 0;
1715 #if FF_API_DEINTERLACE
1716     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1717 #endif
1718
1719     rate_emu_sleep(ist);
1720
1721     if (ist->st->sample_aspect_ratio.num)
1722         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1723
1724     resample_changed = ist->resample_width   != decoded_frame->width  ||
1725                        ist->resample_height  != decoded_frame->height ||
1726                        ist->resample_pix_fmt != decoded_frame->format;
1727     if (resample_changed) {
1728         av_log(NULL, AV_LOG_INFO,
1729                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1730                ist->file_index, ist->st->index,
1731                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1732                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1733
1734         ist->resample_width   = decoded_frame->width;
1735         ist->resample_height  = decoded_frame->height;
1736         ist->resample_pix_fmt = decoded_frame->format;
1737
1738         for (i = 0; i < nb_filtergraphs; i++) {
1739             if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
1740                 configure_filtergraph(filtergraphs[i]) < 0) {
1741                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1742                 exit(1);
1743             }
1744         }
1745     }
1746
1747     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1748     for (i = 0; i < ist->nb_filters; i++) {
1749         if (!frame_sample_aspect->num)
1750             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1751
1752         if (i < ist->nb_filters - 1) {
1753             f = ist->filter_frame;
1754             err = av_frame_ref(f, decoded_frame);
1755             if (err < 0)
1756                 break;
1757         } else
1758             f = decoded_frame;
1759         if(av_buffersrc_add_frame_flags(ist->filters[i]->filter, f,
1760                                         AV_BUFFERSRC_FLAG_PUSH)<0) {
1761             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
1762             exit(1);
1763         }
1764
1765     }
1766
1767     av_frame_unref(ist->filter_frame);
1768     av_frame_unref(decoded_frame);
1769     av_free(buffer_to_free);
1770     return err < 0 ? err : ret;
1771 }
1772
1773 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1774 {
1775     AVSubtitle subtitle;
1776     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1777                                           &subtitle, got_output, pkt);
1778     if (ret < 0 || !*got_output) {
1779         if (!pkt->size)
1780             sub2video_flush(ist);
1781         return ret;
1782     }
1783
1784     if (ist->fix_sub_duration) {
1785         if (ist->prev_sub.got_output) {
1786             int end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1787                                  1000, AV_TIME_BASE);
1788             if (end < ist->prev_sub.subtitle.end_display_time) {
1789                 av_log(ist->st->codec, AV_LOG_DEBUG,
1790                        "Subtitle duration reduced from %d to %d\n",
1791                        ist->prev_sub.subtitle.end_display_time, end);
1792                 ist->prev_sub.subtitle.end_display_time = end;
1793             }
1794         }
1795         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1796         FFSWAP(int,        ret,         ist->prev_sub.ret);
1797         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1798     }
1799
1800     sub2video_update(ist, &subtitle);
1801
1802     if (!*got_output || !subtitle.num_rects)
1803         return ret;
1804
1805     rate_emu_sleep(ist);
1806
1807     for (i = 0; i < nb_output_streams; i++) {
1808         OutputStream *ost = output_streams[i];
1809
1810         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1811             continue;
1812
1813         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
1814     }
1815
1816     avsubtitle_free(&subtitle);
1817     return ret;
1818 }
1819
1820 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1821 static int output_packet(InputStream *ist, const AVPacket *pkt)
1822 {
1823     int ret = 0, i;
1824     int got_output;
1825
1826     AVPacket avpkt;
1827     if (!ist->saw_first_ts) {
1828         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;
1829         ist->pts = 0;
1830         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1831             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1832             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1833         }
1834         ist->saw_first_ts = 1;
1835     }
1836
1837     if (ist->next_dts == AV_NOPTS_VALUE)
1838         ist->next_dts = ist->dts;
1839     if (ist->next_pts == AV_NOPTS_VALUE)
1840         ist->next_pts = ist->pts;
1841
1842     if (pkt == NULL) {
1843         /* EOF handling */
1844         av_init_packet(&avpkt);
1845         avpkt.data = NULL;
1846         avpkt.size = 0;
1847         goto handle_eof;
1848     } else {
1849         avpkt = *pkt;
1850     }
1851
1852     if (pkt->dts != AV_NOPTS_VALUE) {
1853         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1854         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1855             ist->next_pts = ist->pts = ist->dts;
1856     }
1857
1858     // while we have more to decode or while the decoder did output something on EOF
1859     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1860         int duration;
1861     handle_eof:
1862
1863         ist->pts = ist->next_pts;
1864         ist->dts = ist->next_dts;
1865
1866         if (avpkt.size && avpkt.size != pkt->size) {
1867             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1868                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1869             ist->showed_multi_packet_warning = 1;
1870         }
1871
1872         switch (ist->st->codec->codec_type) {
1873         case AVMEDIA_TYPE_AUDIO:
1874             ret = decode_audio    (ist, &avpkt, &got_output);
1875             break;
1876         case AVMEDIA_TYPE_VIDEO:
1877             ret = decode_video    (ist, &avpkt, &got_output);
1878             if (avpkt.duration) {
1879                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1880             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1881                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1882                 duration = ((int64_t)AV_TIME_BASE *
1883                                 ist->st->codec->time_base.num * ticks) /
1884                                 ist->st->codec->time_base.den;
1885             } else
1886                 duration = 0;
1887
1888             if(ist->dts != AV_NOPTS_VALUE && duration) {
1889                 ist->next_dts += duration;
1890             }else
1891                 ist->next_dts = AV_NOPTS_VALUE;
1892
1893             if (got_output)
1894                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1895             break;
1896         case AVMEDIA_TYPE_SUBTITLE:
1897             ret = transcode_subtitles(ist, &avpkt, &got_output);
1898             break;
1899         default:
1900             return -1;
1901         }
1902
1903         if (ret < 0)
1904             return ret;
1905
1906         avpkt.dts=
1907         avpkt.pts= AV_NOPTS_VALUE;
1908
1909         // touch data and size only if not EOF
1910         if (pkt) {
1911             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1912                 ret = avpkt.size;
1913             avpkt.data += ret;
1914             avpkt.size -= ret;
1915         }
1916         if (!got_output) {
1917             continue;
1918         }
1919     }
1920
1921     /* handle stream copy */
1922     if (!ist->decoding_needed) {
1923         rate_emu_sleep(ist);
1924         ist->dts = ist->next_dts;
1925         switch (ist->st->codec->codec_type) {
1926         case AVMEDIA_TYPE_AUDIO:
1927             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1928                              ist->st->codec->sample_rate;
1929             break;
1930         case AVMEDIA_TYPE_VIDEO:
1931             if (pkt->duration) {
1932                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1933             } else if(ist->st->codec->time_base.num != 0) {
1934                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1935                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1936                                   ist->st->codec->time_base.num * ticks) /
1937                                   ist->st->codec->time_base.den;
1938             }
1939             break;
1940         }
1941         ist->pts = ist->dts;
1942         ist->next_pts = ist->next_dts;
1943     }
1944     for (i = 0; pkt && i < nb_output_streams; i++) {
1945         OutputStream *ost = output_streams[i];
1946
1947         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1948             continue;
1949
1950         do_streamcopy(ist, ost, pkt);
1951     }
1952
1953     return 0;
1954 }
1955
1956 static void print_sdp(void)
1957 {
1958     char sdp[16384];
1959     int i;
1960     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1961
1962     if (!avc)
1963         exit(1);
1964     for (i = 0; i < nb_output_files; i++)
1965         avc[i] = output_files[i]->ctx;
1966
1967     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1968     printf("SDP:\n%s\n", sdp);
1969     fflush(stdout);
1970     av_freep(&avc);
1971 }
1972
1973 static int init_input_stream(int ist_index, char *error, int error_len)
1974 {
1975     int ret;
1976     InputStream *ist = input_streams[ist_index];
1977
1978     if (ist->decoding_needed) {
1979         AVCodec *codec = ist->dec;
1980         if (!codec) {
1981             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1982                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1983             return AVERROR(EINVAL);
1984         }
1985
1986         av_opt_set_int(ist->st->codec, "refcounted_frames", 1, 0);
1987
1988         if (!av_dict_get(ist->opts, "threads", NULL, 0))
1989             av_dict_set(&ist->opts, "threads", "auto", 0);
1990         if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
1991             if (ret == AVERROR_EXPERIMENTAL)
1992                 abort_codec_experimental(codec, 0);
1993             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1994                     ist->file_index, ist->st->index);
1995             return ret;
1996         }
1997         assert_avoptions(ist->opts);
1998     }
1999
2000     ist->next_pts = AV_NOPTS_VALUE;
2001     ist->next_dts = AV_NOPTS_VALUE;
2002     ist->is_start = 1;
2003
2004     return 0;
2005 }
2006
2007 static InputStream *get_input_stream(OutputStream *ost)
2008 {
2009     if (ost->source_index >= 0)
2010         return input_streams[ost->source_index];
2011     return NULL;
2012 }
2013
2014 static int compare_int64(const void *a, const void *b)
2015 {
2016     int64_t va = *(int64_t *)a, vb = *(int64_t *)b;
2017     return va < vb ? -1 : va > vb ? +1 : 0;
2018 }
2019
2020 static void parse_forced_key_frames(char *kf, OutputStream *ost,
2021                                     AVCodecContext *avctx)
2022 {
2023     char *p;
2024     int n = 1, i, size, index = 0;
2025     int64_t t, *pts;
2026
2027     for (p = kf; *p; p++)
2028         if (*p == ',')
2029             n++;
2030     size = n;
2031     pts = av_malloc(sizeof(*pts) * size);
2032     if (!pts) {
2033         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
2034         exit(1);
2035     }
2036
2037     p = kf;
2038     for (i = 0; i < n; i++) {
2039         char *next = strchr(p, ',');
2040
2041         if (next)
2042             *next++ = 0;
2043
2044         if (!memcmp(p, "chapters", 8)) {
2045
2046             AVFormatContext *avf = output_files[ost->file_index]->ctx;
2047             int j;
2048
2049             if (avf->nb_chapters > INT_MAX - size ||
2050                 !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
2051                                      sizeof(*pts)))) {
2052                 av_log(NULL, AV_LOG_FATAL,
2053                        "Could not allocate forced key frames array.\n");
2054                 exit(1);
2055             }
2056             t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
2057             t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2058
2059             for (j = 0; j < avf->nb_chapters; j++) {
2060                 AVChapter *c = avf->chapters[j];
2061                 av_assert1(index < size);
2062                 pts[index++] = av_rescale_q(c->start, c->time_base,
2063                                             avctx->time_base) + t;
2064             }
2065
2066         } else {
2067
2068             t = parse_time_or_die("force_key_frames", p, 1);
2069             av_assert1(index < size);
2070             pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2071
2072         }
2073
2074         p = next;
2075     }
2076
2077     av_assert0(index == size);
2078     qsort(pts, size, sizeof(*pts), compare_int64);
2079     ost->forced_kf_count = size;
2080     ost->forced_kf_pts   = pts;
2081 }
2082
2083 static void report_new_stream(int input_index, AVPacket *pkt)
2084 {
2085     InputFile *file = input_files[input_index];
2086     AVStream *st = file->ctx->streams[pkt->stream_index];
2087
2088     if (pkt->stream_index < file->nb_streams_warn)
2089         return;
2090     av_log(file->ctx, AV_LOG_WARNING,
2091            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
2092            av_get_media_type_string(st->codec->codec_type),
2093            input_index, pkt->stream_index,
2094            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
2095     file->nb_streams_warn = pkt->stream_index + 1;
2096 }
2097
2098 static int transcode_init(void)
2099 {
2100     int ret = 0, i, j, k;
2101     AVFormatContext *oc;
2102     AVCodecContext *codec;
2103     OutputStream *ost;
2104     InputStream *ist;
2105     char error[1024];
2106     int want_sdp = 1;
2107
2108     /* init framerate emulation */
2109     for (i = 0; i < nb_input_files; i++) {
2110         InputFile *ifile = input_files[i];
2111         if (ifile->rate_emu)
2112             for (j = 0; j < ifile->nb_streams; j++)
2113                 input_streams[j + ifile->ist_index]->start = av_gettime();
2114     }
2115
2116     /* output stream init */
2117     for (i = 0; i < nb_output_files; i++) {
2118         oc = output_files[i]->ctx;
2119         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2120             av_dump_format(oc, i, oc->filename, 1);
2121             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2122             return AVERROR(EINVAL);
2123         }
2124     }
2125
2126     /* init complex filtergraphs */
2127     for (i = 0; i < nb_filtergraphs; i++)
2128         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2129             return ret;
2130
2131     /* for each output stream, we compute the right encoding parameters */
2132     for (i = 0; i < nb_output_streams; i++) {
2133         AVCodecContext *icodec = NULL;
2134         ost = output_streams[i];
2135         oc  = output_files[ost->file_index]->ctx;
2136         ist = get_input_stream(ost);
2137
2138         if (ost->attachment_filename)
2139             continue;
2140
2141         codec  = ost->st->codec;
2142
2143         if (ist) {
2144             icodec = ist->st->codec;
2145
2146             ost->st->disposition          = ist->st->disposition;
2147             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2148             codec->chroma_sample_location = icodec->chroma_sample_location;
2149         }
2150
2151         if (ost->stream_copy) {
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(ost->frame_rate.num)
2230                 codec->time_base = av_inv_q(ost->frame_rate);
2231
2232             av_reduce(&codec->time_base.num, &codec->time_base.den,
2233                         codec->time_base.num, codec->time_base.den, INT_MAX);
2234
2235             switch (codec->codec_type) {
2236             case AVMEDIA_TYPE_AUDIO:
2237                 if (audio_volume != 256) {
2238                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2239                     exit(1);
2240                 }
2241                 codec->channel_layout     = icodec->channel_layout;
2242                 codec->sample_rate        = icodec->sample_rate;
2243                 codec->channels           = icodec->channels;
2244                 codec->frame_size         = icodec->frame_size;
2245                 codec->audio_service_type = icodec->audio_service_type;
2246                 codec->block_align        = icodec->block_align;
2247                 if((codec->block_align == 1 || codec->block_align == 1152 || codec->block_align == 576) && codec->codec_id == AV_CODEC_ID_MP3)
2248                     codec->block_align= 0;
2249                 if(codec->codec_id == AV_CODEC_ID_AC3)
2250                     codec->block_align= 0;
2251                 break;
2252             case AVMEDIA_TYPE_VIDEO:
2253                 codec->pix_fmt            = icodec->pix_fmt;
2254                 codec->width              = icodec->width;
2255                 codec->height             = icodec->height;
2256                 codec->has_b_frames       = icodec->has_b_frames;
2257                 if (!codec->sample_aspect_ratio.num) {
2258                     codec->sample_aspect_ratio   =
2259                     ost->st->sample_aspect_ratio =
2260                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2261                         ist->st->codec->sample_aspect_ratio.num ?
2262                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2263                 }
2264                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2265                 break;
2266             case AVMEDIA_TYPE_SUBTITLE:
2267                 codec->width  = icodec->width;
2268                 codec->height = icodec->height;
2269                 break;
2270             case AVMEDIA_TYPE_DATA:
2271             case AVMEDIA_TYPE_ATTACHMENT:
2272                 break;
2273             default:
2274                 abort();
2275             }
2276         } else {
2277             if (!ost->enc)
2278                 ost->enc = avcodec_find_encoder(codec->codec_id);
2279             if (!ost->enc) {
2280                 /* should only happen when a default codec is not present. */
2281                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2282                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2283                 ret = AVERROR(EINVAL);
2284                 goto dump_format;
2285             }
2286
2287             if (ist)
2288                 ist->decoding_needed++;
2289             ost->encoding_needed = 1;
2290
2291             if (!ost->filter &&
2292                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2293                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2294                     FilterGraph *fg;
2295                     fg = init_simple_filtergraph(ist, ost);
2296                     if (configure_filtergraph(fg)) {
2297                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2298                         exit(1);
2299                     }
2300             }
2301
2302             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2303                 if (ost->filter && !ost->frame_rate.num)
2304                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2305                 if (ist && !ost->frame_rate.num)
2306                     ost->frame_rate = ist->framerate;
2307                 if (ist && !ost->frame_rate.num)
2308                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2309 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2310                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2311                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2312                     ost->frame_rate = ost->enc->supported_framerates[idx];
2313                 }
2314             }
2315
2316             switch (codec->codec_type) {
2317             case AVMEDIA_TYPE_AUDIO:
2318                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2319                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2320                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2321                 codec->channels       = avfilter_link_get_channels(ost->filter->filter->inputs[0]);
2322                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2323                 break;
2324             case AVMEDIA_TYPE_VIDEO:
2325                 codec->time_base = av_inv_q(ost->frame_rate);
2326                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2327                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2328                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2329                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2330                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2331                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2332                 }
2333                 for (j = 0; j < ost->forced_kf_count; j++)
2334                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2335                                                          AV_TIME_BASE_Q,
2336                                                          codec->time_base);
2337
2338                 codec->width  = ost->filter->filter->inputs[0]->w;
2339                 codec->height = ost->filter->filter->inputs[0]->h;
2340                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2341                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
2342                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
2343                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2344                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2345
2346                 if (!icodec ||
2347                     codec->width   != icodec->width  ||
2348                     codec->height  != icodec->height ||
2349                     codec->pix_fmt != icodec->pix_fmt) {
2350                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2351                 }
2352
2353                 if (ost->forced_keyframes) {
2354                     if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
2355                         ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
2356                                             forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
2357                         if (ret < 0) {
2358                             av_log(NULL, AV_LOG_ERROR,
2359                                    "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
2360                             return ret;
2361                         }
2362                         ost->forced_keyframes_expr_const_values[FKF_N] = 0;
2363                         ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
2364                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
2365                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;
2366                     } else {
2367                         parse_forced_key_frames(ost->forced_keyframes, ost, ost->st->codec);
2368                     }
2369                 }
2370                 break;
2371             case AVMEDIA_TYPE_SUBTITLE:
2372                 codec->time_base = (AVRational){1, 1000};
2373                 if (!codec->width) {
2374                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2375                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2376                 }
2377                 break;
2378             default:
2379                 abort();
2380                 break;
2381             }
2382             /* two pass mode */
2383             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2384                 char logfilename[1024];
2385                 FILE *f;
2386
2387                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2388                          ost->logfile_prefix ? ost->logfile_prefix :
2389                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2390                          i);
2391                 if (!strcmp(ost->enc->name, "libx264")) {
2392                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2393                 } else {
2394                     if (codec->flags & CODEC_FLAG_PASS2) {
2395                         char  *logbuffer;
2396                         size_t logbuffer_size;
2397                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2398                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2399                                    logfilename);
2400                             exit(1);
2401                         }
2402                         codec->stats_in = logbuffer;
2403                     }
2404                     if (codec->flags & CODEC_FLAG_PASS1) {
2405                         f = fopen(logfilename, "wb");
2406                         if (!f) {
2407                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2408                                 logfilename, strerror(errno));
2409                             exit(1);
2410                         }
2411                         ost->logfile = f;
2412                     }
2413                 }
2414             }
2415         }
2416     }
2417
2418     /* open each encoder */
2419     for (i = 0; i < nb_output_streams; i++) {
2420         ost = output_streams[i];
2421         if (ost->encoding_needed) {
2422             AVCodec      *codec = ost->enc;
2423             AVCodecContext *dec = NULL;
2424
2425             if ((ist = get_input_stream(ost)))
2426                 dec = ist->st->codec;
2427             if (dec && dec->subtitle_header) {
2428                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2429                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2430                 if (!ost->st->codec->subtitle_header) {
2431                     ret = AVERROR(ENOMEM);
2432                     goto dump_format;
2433                 }
2434                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2435                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2436             }
2437             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2438                 av_dict_set(&ost->opts, "threads", "auto", 0);
2439             if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
2440                 if (ret == AVERROR_EXPERIMENTAL)
2441                     abort_codec_experimental(codec, 1);
2442                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2443                         ost->file_index, ost->index);
2444                 goto dump_format;
2445             }
2446             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2447                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2448                 av_buffersink_set_frame_size(ost->filter->filter,
2449                                              ost->st->codec->frame_size);
2450             assert_avoptions(ost->opts);
2451             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2452                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2453                                              " It takes bits/s as argument, not kbits/s\n");
2454             extra_size += ost->st->codec->extradata_size;
2455
2456             if (ost->st->codec->me_threshold)
2457                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
2458         } else {
2459             av_opt_set_dict(ost->st->codec, &ost->opts);
2460         }
2461     }
2462
2463     /* init input streams */
2464     for (i = 0; i < nb_input_streams; i++)
2465         if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
2466             for (i = 0; i < nb_output_streams; i++) {
2467                 ost = output_streams[i];
2468                 avcodec_close(ost->st->codec);
2469             }
2470             goto dump_format;
2471         }
2472
2473     /* discard unused programs */
2474     for (i = 0; i < nb_input_files; i++) {
2475         InputFile *ifile = input_files[i];
2476         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2477             AVProgram *p = ifile->ctx->programs[j];
2478             int discard  = AVDISCARD_ALL;
2479
2480             for (k = 0; k < p->nb_stream_indexes; k++)
2481                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2482                     discard = AVDISCARD_DEFAULT;
2483                     break;
2484                 }
2485             p->discard = discard;
2486         }
2487     }
2488
2489     /* open files and write file headers */
2490     for (i = 0; i < nb_output_files; i++) {
2491         oc = output_files[i]->ctx;
2492         oc->interrupt_callback = int_cb;
2493         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2494             char errbuf[128];
2495             const char *errbuf_ptr = errbuf;
2496             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
2497                 errbuf_ptr = strerror(AVUNERROR(ret));
2498             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
2499             ret = AVERROR(EINVAL);
2500             goto dump_format;
2501         }
2502 //         assert_avoptions(output_files[i]->opts);
2503         if (strcmp(oc->oformat->name, "rtp")) {
2504             want_sdp = 0;
2505         }
2506     }
2507
2508  dump_format:
2509     /* dump the file output parameters - cannot be done before in case
2510        of stream copy */
2511     for (i = 0; i < nb_output_files; i++) {
2512         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2513     }
2514
2515     /* dump the stream mapping */
2516     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2517     for (i = 0; i < nb_input_streams; i++) {
2518         ist = input_streams[i];
2519
2520         for (j = 0; j < ist->nb_filters; j++) {
2521             if (ist->filters[j]->graph->graph_desc) {
2522                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2523                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2524                        ist->filters[j]->name);
2525                 if (nb_filtergraphs > 1)
2526                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2527                 av_log(NULL, AV_LOG_INFO, "\n");
2528             }
2529         }
2530     }
2531
2532     for (i = 0; i < nb_output_streams; i++) {
2533         ost = output_streams[i];
2534
2535         if (ost->attachment_filename) {
2536             /* an attached file */
2537             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2538                    ost->attachment_filename, ost->file_index, ost->index);
2539             continue;
2540         }
2541
2542         if (ost->filter && ost->filter->graph->graph_desc) {
2543             /* output from a complex graph */
2544             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2545             if (nb_filtergraphs > 1)
2546                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2547
2548             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2549                    ost->index, ost->enc ? ost->enc->name : "?");
2550             continue;
2551         }
2552
2553         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2554                input_streams[ost->source_index]->file_index,
2555                input_streams[ost->source_index]->st->index,
2556                ost->file_index,
2557                ost->index);
2558         if (ost->sync_ist != input_streams[ost->source_index])
2559             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2560                    ost->sync_ist->file_index,
2561                    ost->sync_ist->st->index);
2562         if (ost->stream_copy)
2563             av_log(NULL, AV_LOG_INFO, " (copy)");
2564         else
2565             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2566                    input_streams[ost->source_index]->dec->name : "?",
2567                    ost->enc ? ost->enc->name : "?");
2568         av_log(NULL, AV_LOG_INFO, "\n");
2569     }
2570
2571     if (ret) {
2572         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2573         return ret;
2574     }
2575
2576     if (want_sdp) {
2577         print_sdp();
2578     }
2579
2580     return 0;
2581 }
2582
2583 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2584 static int need_output(void)
2585 {
2586     int i;
2587
2588     for (i = 0; i < nb_output_streams; i++) {
2589         OutputStream *ost    = output_streams[i];
2590         OutputFile *of       = output_files[ost->file_index];
2591         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2592
2593         if (ost->finished ||
2594             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2595             continue;
2596         if (ost->frame_number >= ost->max_frames) {
2597             int j;
2598             for (j = 0; j < of->ctx->nb_streams; j++)
2599                 close_output_stream(output_streams[of->ost_index + j]);
2600             continue;
2601         }
2602
2603         return 1;
2604     }
2605
2606     return 0;
2607 }
2608
2609 /**
2610  * Select the output stream to process.
2611  *
2612  * @return  selected output stream, or NULL if none available
2613  */
2614 static OutputStream *choose_output(void)
2615 {
2616     int i;
2617     int64_t opts_min = INT64_MAX;
2618     OutputStream *ost_min = NULL;
2619
2620     for (i = 0; i < nb_output_streams; i++) {
2621         OutputStream *ost = output_streams[i];
2622         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2623                                     AV_TIME_BASE_Q);
2624         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2625             opts_min = opts;
2626             ost_min  = ost;
2627         }
2628     }
2629     return ost_min;
2630 }
2631
2632 static int check_keyboard_interaction(int64_t cur_time)
2633 {
2634     int i, ret, key;
2635     static int64_t last_time;
2636     if (received_nb_signals)
2637         return AVERROR_EXIT;
2638     /* read_key() returns 0 on EOF */
2639     if(cur_time - last_time >= 100000 && !run_as_daemon){
2640         key =  read_key();
2641         last_time = cur_time;
2642     }else
2643         key = -1;
2644     if (key == 'q')
2645         return AVERROR_EXIT;
2646     if (key == '+') av_log_set_level(av_log_get_level()+10);
2647     if (key == '-') av_log_set_level(av_log_get_level()-10);
2648     if (key == 's') qp_hist     ^= 1;
2649     if (key == 'h'){
2650         if (do_hex_dump){
2651             do_hex_dump = do_pkt_dump = 0;
2652         } else if(do_pkt_dump){
2653             do_hex_dump = 1;
2654         } else
2655             do_pkt_dump = 1;
2656         av_log_set_level(AV_LOG_DEBUG);
2657     }
2658     if (key == 'c' || key == 'C'){
2659         char buf[4096], target[64], command[256], arg[256] = {0};
2660         double time;
2661         int k, n = 0;
2662         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2663         i = 0;
2664         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2665             if (k > 0)
2666                 buf[i++] = k;
2667         buf[i] = 0;
2668         if (k > 0 &&
2669             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2670             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2671                    target, time, command, arg);
2672             for (i = 0; i < nb_filtergraphs; i++) {
2673                 FilterGraph *fg = filtergraphs[i];
2674                 if (fg->graph) {
2675                     if (time < 0) {
2676                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2677                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2678                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2679                     } else {
2680                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2681                     }
2682                 }
2683             }
2684         } else {
2685             av_log(NULL, AV_LOG_ERROR,
2686                    "Parse error, at least 3 arguments were expected, "
2687                    "only %d given in string '%s'\n", n, buf);
2688         }
2689     }
2690     if (key == 'd' || key == 'D'){
2691         int debug=0;
2692         if(key == 'D') {
2693             debug = input_streams[0]->st->codec->debug<<1;
2694             if(!debug) debug = 1;
2695             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2696                 debug += debug;
2697         }else
2698             if(scanf("%d", &debug)!=1)
2699                 fprintf(stderr,"error parsing debug value\n");
2700         for(i=0;i<nb_input_streams;i++) {
2701             input_streams[i]->st->codec->debug = debug;
2702         }
2703         for(i=0;i<nb_output_streams;i++) {
2704             OutputStream *ost = output_streams[i];
2705             ost->st->codec->debug = debug;
2706         }
2707         if(debug) av_log_set_level(AV_LOG_DEBUG);
2708         fprintf(stderr,"debug=%d\n", debug);
2709     }
2710     if (key == '?'){
2711         fprintf(stderr, "key    function\n"
2712                         "?      show this help\n"
2713                         "+      increase verbosity\n"
2714                         "-      decrease verbosity\n"
2715                         "c      Send command to filtergraph\n"
2716                         "D      cycle through available debug modes\n"
2717                         "h      dump packets/hex press to cycle through the 3 states\n"
2718                         "q      quit\n"
2719                         "s      Show QP histogram\n"
2720         );
2721     }
2722     return 0;
2723 }
2724
2725 #if HAVE_PTHREADS
2726 static void *input_thread(void *arg)
2727 {
2728     InputFile *f = arg;
2729     int ret = 0;
2730
2731     while (!transcoding_finished && ret >= 0) {
2732         AVPacket pkt;
2733         ret = av_read_frame(f->ctx, &pkt);
2734
2735         if (ret == AVERROR(EAGAIN)) {
2736             av_usleep(10000);
2737             ret = 0;
2738             continue;
2739         } else if (ret < 0)
2740             break;
2741
2742         pthread_mutex_lock(&f->fifo_lock);
2743         while (!av_fifo_space(f->fifo))
2744             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2745
2746         av_dup_packet(&pkt);
2747         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2748
2749         pthread_mutex_unlock(&f->fifo_lock);
2750     }
2751
2752     f->finished = 1;
2753     return NULL;
2754 }
2755
2756 static void free_input_threads(void)
2757 {
2758     int i;
2759
2760     if (nb_input_files == 1)
2761         return;
2762
2763     transcoding_finished = 1;
2764
2765     for (i = 0; i < nb_input_files; i++) {
2766         InputFile *f = input_files[i];
2767         AVPacket pkt;
2768
2769         if (!f->fifo || f->joined)
2770             continue;
2771
2772         pthread_mutex_lock(&f->fifo_lock);
2773         while (av_fifo_size(f->fifo)) {
2774             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2775             av_free_packet(&pkt);
2776         }
2777         pthread_cond_signal(&f->fifo_cond);
2778         pthread_mutex_unlock(&f->fifo_lock);
2779
2780         pthread_join(f->thread, NULL);
2781         f->joined = 1;
2782
2783         while (av_fifo_size(f->fifo)) {
2784             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2785             av_free_packet(&pkt);
2786         }
2787         av_fifo_free(f->fifo);
2788     }
2789 }
2790
2791 static int init_input_threads(void)
2792 {
2793     int i, ret;
2794
2795     if (nb_input_files == 1)
2796         return 0;
2797
2798     for (i = 0; i < nb_input_files; i++) {
2799         InputFile *f = input_files[i];
2800
2801         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2802             return AVERROR(ENOMEM);
2803
2804         pthread_mutex_init(&f->fifo_lock, NULL);
2805         pthread_cond_init (&f->fifo_cond, NULL);
2806
2807         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2808             return AVERROR(ret);
2809     }
2810     return 0;
2811 }
2812
2813 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2814 {
2815     int ret = 0;
2816
2817     pthread_mutex_lock(&f->fifo_lock);
2818
2819     if (av_fifo_size(f->fifo)) {
2820         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2821         pthread_cond_signal(&f->fifo_cond);
2822     } else {
2823         if (f->finished)
2824             ret = AVERROR_EOF;
2825         else
2826             ret = AVERROR(EAGAIN);
2827     }
2828
2829     pthread_mutex_unlock(&f->fifo_lock);
2830
2831     return ret;
2832 }
2833 #endif
2834
2835 static int get_input_packet(InputFile *f, AVPacket *pkt)
2836 {
2837 #if HAVE_PTHREADS
2838     if (nb_input_files > 1)
2839         return get_input_packet_mt(f, pkt);
2840 #endif
2841     return av_read_frame(f->ctx, pkt);
2842 }
2843
2844 static int got_eagain(void)
2845 {
2846     int i;
2847     for (i = 0; i < nb_output_streams; i++)
2848         if (output_streams[i]->unavailable)
2849             return 1;
2850     return 0;
2851 }
2852
2853 static void reset_eagain(void)
2854 {
2855     int i;
2856     for (i = 0; i < nb_input_files; i++)
2857         input_files[i]->eagain = 0;
2858     for (i = 0; i < nb_output_streams; i++)
2859         output_streams[i]->unavailable = 0;
2860 }
2861
2862 /*
2863  * Return
2864  * - 0 -- one packet was read and processed
2865  * - AVERROR(EAGAIN) -- no packets were available for selected file,
2866  *   this function should be called again
2867  * - AVERROR_EOF -- this function should not be called again
2868  */
2869 static int process_input(int file_index)
2870 {
2871     InputFile *ifile = input_files[file_index];
2872     AVFormatContext *is;
2873     InputStream *ist;
2874     AVPacket pkt;
2875     int ret, i, j;
2876
2877     is  = ifile->ctx;
2878     ret = get_input_packet(ifile, &pkt);
2879
2880     if (ret == AVERROR(EAGAIN)) {
2881         ifile->eagain = 1;
2882         return ret;
2883     }
2884     if (ret < 0) {
2885         if (ret != AVERROR_EOF) {
2886             print_error(is->filename, ret);
2887             if (exit_on_error)
2888                 exit(1);
2889         }
2890         ifile->eof_reached = 1;
2891
2892         for (i = 0; i < ifile->nb_streams; i++) {
2893             ist = input_streams[ifile->ist_index + i];
2894             if (ist->decoding_needed)
2895                 output_packet(ist, NULL);
2896
2897             /* mark all outputs that don't go through lavfi as finished */
2898             for (j = 0; j < nb_output_streams; j++) {
2899                 OutputStream *ost = output_streams[j];
2900
2901                 if (ost->source_index == ifile->ist_index + i &&
2902                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2903                     close_output_stream(ost);
2904             }
2905         }
2906
2907         return AVERROR(EAGAIN);
2908     }
2909
2910     reset_eagain();
2911
2912     if (do_pkt_dump) {
2913         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2914                          is->streams[pkt.stream_index]);
2915     }
2916     /* the following test is needed in case new streams appear
2917        dynamically in stream : we ignore them */
2918     if (pkt.stream_index >= ifile->nb_streams) {
2919         report_new_stream(file_index, &pkt);
2920         goto discard_packet;
2921     }
2922
2923     ist = input_streams[ifile->ist_index + pkt.stream_index];
2924     if (ist->discard)
2925         goto discard_packet;
2926
2927     if (debug_ts) {
2928         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
2929                "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",
2930                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2931                av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
2932                av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
2933                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2934                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2935                av_ts2str(input_files[ist->file_index]->ts_offset),
2936                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
2937     }
2938
2939     if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
2940         int64_t stime, stime2;
2941         // Correcting starttime based on the enabled streams
2942         // 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.
2943         //       so we instead do it here as part of discontinuity handling
2944         if (   ist->next_dts == AV_NOPTS_VALUE
2945             && ifile->ts_offset == -is->start_time
2946             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2947             int64_t new_start_time = INT64_MAX;
2948             for (i=0; i<is->nb_streams; i++) {
2949                 AVStream *st = is->streams[i];
2950                 if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
2951                     continue;
2952                 new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
2953             }
2954             if (new_start_time > is->start_time) {
2955                 av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
2956                 ifile->ts_offset = -new_start_time;
2957             }
2958         }
2959
2960         stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
2961         stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
2962         ist->wrap_correction_done = 1;
2963
2964         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2965             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
2966             ist->wrap_correction_done = 0;
2967         }
2968         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2969             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
2970             ist->wrap_correction_done = 0;
2971         }
2972     }
2973
2974     if (pkt.dts != AV_NOPTS_VALUE)
2975         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2976     if (pkt.pts != AV_NOPTS_VALUE)
2977         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2978
2979     if (pkt.pts != AV_NOPTS_VALUE)
2980         pkt.pts *= ist->ts_scale;
2981     if (pkt.dts != AV_NOPTS_VALUE)
2982         pkt.dts *= ist->ts_scale;
2983
2984     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2985         !copy_ts) {
2986         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2987         int64_t delta   = pkt_dts - ist->next_dts;
2988         if (is->iformat->flags & AVFMT_TS_DISCONT) {
2989         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2990             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2991                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2992             pkt_dts+1<ist->pts){
2993             ifile->ts_offset -= delta;
2994             av_log(NULL, AV_LOG_DEBUG,
2995                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2996                    delta, ifile->ts_offset);
2997             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2998             if (pkt.pts != AV_NOPTS_VALUE)
2999                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3000         }
3001         } else {
3002             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3003                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
3004                ) {
3005                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3006                 pkt.dts = AV_NOPTS_VALUE;
3007             }
3008             if (pkt.pts != AV_NOPTS_VALUE){
3009                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3010                 delta   = pkt_pts - ist->next_dts;
3011                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3012                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
3013                    ) {
3014                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3015                     pkt.pts = AV_NOPTS_VALUE;
3016                 }
3017             }
3018         }
3019     }
3020
3021     if (debug_ts) {
3022         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",
3023                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
3024                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3025                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3026                av_ts2str(input_files[ist->file_index]->ts_offset),
3027                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3028     }
3029
3030     sub2video_heartbeat(ist, pkt.pts);
3031
3032     ret = output_packet(ist, &pkt);
3033     if (ret < 0) {
3034         char buf[128];
3035         av_strerror(ret, buf, sizeof(buf));
3036         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
3037                 ist->file_index, ist->st->index, buf);
3038         if (exit_on_error)
3039             exit(1);
3040     }
3041
3042 discard_packet:
3043     av_free_packet(&pkt);
3044
3045     return 0;
3046 }
3047
3048 /**
3049  * Perform a step of transcoding for the specified filter graph.
3050  *
3051  * @param[in]  graph     filter graph to consider
3052  * @param[out] best_ist  input stream where a frame would allow to continue
3053  * @return  0 for success, <0 for error
3054  */
3055 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
3056 {
3057     int i, ret;
3058     int nb_requests, nb_requests_max = 0;
3059     InputFilter *ifilter;
3060     InputStream *ist;
3061
3062     *best_ist = NULL;
3063     ret = avfilter_graph_request_oldest(graph->graph);
3064     if (ret >= 0)
3065         return reap_filters();
3066
3067     if (ret == AVERROR_EOF) {
3068         ret = reap_filters();
3069         for (i = 0; i < graph->nb_outputs; i++)
3070             close_output_stream(graph->outputs[i]->ost);
3071         return ret;
3072     }
3073     if (ret != AVERROR(EAGAIN))
3074         return ret;
3075
3076     for (i = 0; i < graph->nb_inputs; i++) {
3077         ifilter = graph->inputs[i];
3078         ist = ifilter->ist;
3079         if (input_files[ist->file_index]->eagain ||
3080             input_files[ist->file_index]->eof_reached)
3081             continue;
3082         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
3083         if (nb_requests > nb_requests_max) {
3084             nb_requests_max = nb_requests;
3085             *best_ist = ist;
3086         }
3087     }
3088
3089     if (!*best_ist)
3090         for (i = 0; i < graph->nb_outputs; i++)
3091             graph->outputs[i]->ost->unavailable = 1;
3092
3093     return 0;
3094 }
3095
3096 /**
3097  * Run a single step of transcoding.
3098  *
3099  * @return  0 for success, <0 for error
3100  */
3101 static int transcode_step(void)
3102 {
3103     OutputStream *ost;
3104     InputStream  *ist;
3105     int ret;
3106
3107     ost = choose_output();
3108     if (!ost) {
3109         if (got_eagain()) {
3110             reset_eagain();
3111             av_usleep(10000);
3112             return 0;
3113         }
3114         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
3115         return AVERROR_EOF;
3116     }
3117
3118     if (ost->filter) {
3119         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
3120             return ret;
3121         if (!ist)
3122             return 0;
3123     } else {
3124         av_assert0(ost->source_index >= 0);
3125         ist = input_streams[ost->source_index];
3126     }
3127
3128     ret = process_input(ist->file_index);
3129     if (ret == AVERROR(EAGAIN)) {
3130         if (input_files[ist->file_index]->eagain)
3131             ost->unavailable = 1;
3132         return 0;
3133     }
3134     if (ret < 0)
3135         return ret == AVERROR_EOF ? 0 : ret;
3136
3137     return reap_filters();
3138 }
3139
3140 /*
3141  * The following code is the main loop of the file converter
3142  */
3143 static int transcode(void)
3144 {
3145     int ret, i;
3146     AVFormatContext *os;
3147     OutputStream *ost;
3148     InputStream *ist;
3149     int64_t timer_start;
3150
3151     ret = transcode_init();
3152     if (ret < 0)
3153         goto fail;
3154
3155     if (stdin_interaction) {
3156         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3157     }
3158
3159     timer_start = av_gettime();
3160
3161 #if HAVE_PTHREADS
3162     if ((ret = init_input_threads()) < 0)
3163         goto fail;
3164 #endif
3165
3166     while (!received_sigterm) {
3167         int64_t cur_time= av_gettime();
3168
3169         /* if 'q' pressed, exits */
3170         if (stdin_interaction)
3171             if (check_keyboard_interaction(cur_time) < 0)
3172                 break;
3173
3174         /* check if there's any stream where output is still needed */
3175         if (!need_output()) {
3176             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3177             break;
3178         }
3179
3180         ret = transcode_step();
3181         if (ret < 0) {
3182             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
3183                 continue;
3184
3185             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
3186             break;
3187         }
3188
3189         /* dump report by using the output first video and audio streams */
3190         print_report(0, timer_start, cur_time);
3191     }
3192 #if HAVE_PTHREADS
3193     free_input_threads();
3194 #endif
3195
3196     /* at the end of stream, we must flush the decoder buffers */
3197     for (i = 0; i < nb_input_streams; i++) {
3198         ist = input_streams[i];
3199         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3200             output_packet(ist, NULL);
3201         }
3202     }
3203     flush_encoders();
3204
3205     term_exit();
3206
3207     /* write the trailer if needed and close file */
3208     for (i = 0; i < nb_output_files; i++) {
3209         os = output_files[i]->ctx;
3210         av_write_trailer(os);
3211     }
3212
3213     /* dump report by using the first video and audio streams */
3214     print_report(1, timer_start, av_gettime());
3215
3216     /* close each encoder */
3217     for (i = 0; i < nb_output_streams; i++) {
3218         ost = output_streams[i];
3219         if (ost->encoding_needed) {
3220             av_freep(&ost->st->codec->stats_in);
3221             avcodec_close(ost->st->codec);
3222         }
3223     }
3224
3225     /* close each decoder */
3226     for (i = 0; i < nb_input_streams; i++) {
3227         ist = input_streams[i];
3228         if (ist->decoding_needed) {
3229             avcodec_close(ist->st->codec);
3230         }
3231     }
3232
3233     /* finished ! */
3234     ret = 0;
3235
3236  fail:
3237 #if HAVE_PTHREADS
3238     free_input_threads();
3239 #endif
3240
3241     if (output_streams) {
3242         for (i = 0; i < nb_output_streams; i++) {
3243             ost = output_streams[i];
3244             if (ost) {
3245                 if (ost->stream_copy)
3246                     av_freep(&ost->st->codec->extradata);
3247                 if (ost->logfile) {
3248                     fclose(ost->logfile);
3249                     ost->logfile = NULL;
3250                 }
3251                 av_freep(&ost->st->codec->subtitle_header);
3252                 av_free(ost->forced_kf_pts);
3253                 av_dict_free(&ost->opts);
3254                 av_dict_free(&ost->swr_opts);
3255                 av_dict_free(&ost->resample_opts);
3256             }
3257         }
3258     }
3259     return ret;
3260 }
3261
3262
3263 static int64_t getutime(void)
3264 {
3265 #if HAVE_GETRUSAGE
3266     struct rusage rusage;
3267
3268     getrusage(RUSAGE_SELF, &rusage);
3269     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3270 #elif HAVE_GETPROCESSTIMES
3271     HANDLE proc;
3272     FILETIME c, e, k, u;
3273     proc = GetCurrentProcess();
3274     GetProcessTimes(proc, &c, &e, &k, &u);
3275     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3276 #else
3277     return av_gettime();
3278 #endif
3279 }
3280
3281 static int64_t getmaxrss(void)
3282 {
3283 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3284     struct rusage rusage;
3285     getrusage(RUSAGE_SELF, &rusage);
3286     return (int64_t)rusage.ru_maxrss * 1024;
3287 #elif HAVE_GETPROCESSMEMORYINFO
3288     HANDLE proc;
3289     PROCESS_MEMORY_COUNTERS memcounters;
3290     proc = GetCurrentProcess();
3291     memcounters.cb = sizeof(memcounters);
3292     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3293     return memcounters.PeakPagefileUsage;
3294 #else
3295     return 0;
3296 #endif
3297 }
3298
3299 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3300 {
3301 }
3302
3303 int main(int argc, char **argv)
3304 {
3305     int ret;
3306     int64_t ti;
3307
3308     atexit(exit_program);
3309
3310     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3311
3312     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3313     parse_loglevel(argc, argv, options);
3314
3315     if(argc>1 && !strcmp(argv[1], "-d")){
3316         run_as_daemon=1;
3317         av_log_set_callback(log_callback_null);
3318         argc--;
3319         argv++;
3320     }
3321
3322     avcodec_register_all();
3323 #if CONFIG_AVDEVICE
3324     avdevice_register_all();
3325 #endif
3326     avfilter_register_all();
3327     av_register_all();
3328     avformat_network_init();
3329
3330     show_banner(argc, argv, options);
3331
3332     term_init();
3333
3334     /* parse options and open all input/output files */
3335     ret = ffmpeg_parse_options(argc, argv);
3336     if (ret < 0)
3337         exit(1);
3338
3339     if (nb_output_files <= 0 && nb_input_files == 0) {
3340         show_usage();
3341         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3342         exit(1);
3343     }
3344
3345     /* file converter / grab */
3346     if (nb_output_files <= 0) {
3347         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3348         exit(1);
3349     }
3350
3351 //     if (nb_input_files == 0) {
3352 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3353 //         exit(1);
3354 //     }
3355
3356     current_time = ti = getutime();
3357     if (transcode() < 0)
3358         exit(1);
3359     ti = getutime() - ti;
3360     if (do_benchmark) {
3361         printf("bench: utime=%0.3fs\n", ti / 1000000.0);
3362     }
3363
3364     exit(received_nb_signals ? 255 : 0);
3365     return 0;
3366 }