Merge commit '80521c1997a23e148edf89e11b939ab8646297ca'
[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/audioconvert.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 static void do_video_stats(AVFormatContext *os, OutputStream *ost, int frame_size);
113 static int64_t getutime(void);
114
115 static int run_as_daemon  = 0;
116 static int64_t video_size = 0;
117 static int64_t audio_size = 0;
118 static int64_t subtitle_size = 0;
119 static int64_t extra_size = 0;
120 static int nb_frames_dup = 0;
121 static int nb_frames_drop = 0;
122
123 static int current_time;
124 AVIOContext *progress_avio = NULL;
125
126 static uint8_t *subtitle_out;
127
128 #if HAVE_PTHREADS
129 /* signal to input threads that they should exit; set by the main thread */
130 static int transcoding_finished;
131 #endif
132
133 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
134
135 InputStream **input_streams = NULL;
136 int        nb_input_streams = 0;
137 InputFile   **input_files   = NULL;
138 int        nb_input_files   = 0;
139
140 OutputStream **output_streams = NULL;
141 int         nb_output_streams = 0;
142 OutputFile   **output_files   = NULL;
143 int         nb_output_files   = 0;
144
145 FilterGraph **filtergraphs;
146 int        nb_filtergraphs;
147
148 #if HAVE_TERMIOS_H
149
150 /* init terminal so that we can grab keys */
151 static struct termios oldtty;
152 static int restore_tty;
153 #endif
154
155
156 /* sub2video hack:
157    Convert subtitles to video with alpha to insert them in filter graphs.
158    This is a temporary solution until libavfilter gets real subtitles support.
159  */
160
161
162
163 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
164                                 AVSubtitleRect *r)
165 {
166     uint32_t *pal, *dst2;
167     uint8_t *src, *src2;
168     int x, y;
169
170     if (r->type != SUBTITLE_BITMAP) {
171         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
172         return;
173     }
174     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
175         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
176         return;
177     }
178
179     dst += r->y * dst_linesize + r->x * 4;
180     src = r->pict.data[0];
181     pal = (uint32_t *)r->pict.data[1];
182     for (y = 0; y < r->h; y++) {
183         dst2 = (uint32_t *)dst;
184         src2 = src;
185         for (x = 0; x < r->w; x++)
186             *(dst2++) = pal[*(src2++)];
187         dst += dst_linesize;
188         src += r->pict.linesize[0];
189     }
190 }
191
192 static void sub2video_push_ref(InputStream *ist, int64_t pts)
193 {
194     AVFilterBufferRef *ref = ist->sub2video.ref;
195     int i;
196
197     ist->sub2video.last_pts = ref->pts = pts;
198     for (i = 0; i < ist->nb_filters; i++)
199         av_buffersrc_add_ref(ist->filters[i]->filter,
200                              avfilter_ref_buffer(ref, ~0),
201                              AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
202                              AV_BUFFERSRC_FLAG_NO_COPY |
203                              AV_BUFFERSRC_FLAG_PUSH);
204 }
205
206 static void sub2video_update(InputStream *ist, AVSubtitle *sub)
207 {
208     int w = ist->sub2video.w, h = ist->sub2video.h;
209     AVFilterBufferRef *ref = ist->sub2video.ref;
210     int8_t *dst;
211     int     dst_linesize;
212     int i;
213     int64_t pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ist->st->time_base);
214
215     if (!ref)
216         return;
217     dst          = ref->data    [0];
218     dst_linesize = ref->linesize[0];
219     memset(dst, 0, h * dst_linesize);
220     for (i = 0; i < sub->num_rects; i++)
221         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
222     sub2video_push_ref(ist, pts);
223 }
224
225 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
226 {
227     InputFile *infile = input_files[ist->file_index];
228     int i, j, nb_reqs;
229     int64_t pts2;
230
231     /* When a frame is read from a file, examine all sub2video streams in
232        the same file and send the sub2video frame again. Otherwise, decoded
233        video frames could be accumulating in the filter graph while a filter
234        (possibly overlay) is desperately waiting for a subtitle frame. */
235     for (i = 0; i < infile->nb_streams; i++) {
236         InputStream *ist2 = input_streams[infile->ist_index + i];
237         if (!ist2->sub2video.ref)
238             continue;
239         /* subtitles seem to be usually muxed ahead of other streams;
240            if not, substracting a larger time here is necessary */
241         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
242         /* do not send the heartbeat frame if the subtitle is already ahead */
243         if (pts2 <= ist2->sub2video.last_pts)
244             continue;
245         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
246             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
247         if (nb_reqs)
248             sub2video_push_ref(ist2, pts2);
249     }
250 }
251
252 static void sub2video_flush(InputStream *ist)
253 {
254     int i;
255
256     for (i = 0; i < ist->nb_filters; i++)
257         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
258 }
259
260 /* end of sub2video hack */
261
262 void term_exit(void)
263 {
264     av_log(NULL, AV_LOG_QUIET, "%s", "");
265 #if HAVE_TERMIOS_H
266     if(restore_tty)
267         tcsetattr (0, TCSANOW, &oldtty);
268 #endif
269 }
270
271 static volatile int received_sigterm = 0;
272 static volatile int received_nb_signals = 0;
273
274 static void
275 sigterm_handler(int sig)
276 {
277     received_sigterm = sig;
278     received_nb_signals++;
279     term_exit();
280     if(received_nb_signals > 3)
281         exit(123);
282 }
283
284 void term_init(void)
285 {
286 #if HAVE_TERMIOS_H
287     if(!run_as_daemon){
288         struct termios tty;
289         int istty = 1;
290 #if HAVE_ISATTY
291         istty = isatty(0) && isatty(2);
292 #endif
293         if (istty && tcgetattr (0, &tty) == 0) {
294             oldtty = tty;
295             restore_tty = 1;
296             atexit(term_exit);
297
298             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
299                              |INLCR|IGNCR|ICRNL|IXON);
300             tty.c_oflag |= OPOST;
301             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
302             tty.c_cflag &= ~(CSIZE|PARENB);
303             tty.c_cflag |= CS8;
304             tty.c_cc[VMIN] = 1;
305             tty.c_cc[VTIME] = 0;
306
307             tcsetattr (0, TCSANOW, &tty);
308         }
309         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
310     }
311 #endif
312     avformat_network_deinit();
313
314     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
315     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
316 #ifdef SIGXCPU
317     signal(SIGXCPU, sigterm_handler);
318 #endif
319 }
320
321 /* read a key without blocking */
322 static int read_key(void)
323 {
324     unsigned char ch;
325 #if HAVE_TERMIOS_H
326     int n = 1;
327     struct timeval tv;
328     fd_set rfds;
329
330     FD_ZERO(&rfds);
331     FD_SET(0, &rfds);
332     tv.tv_sec = 0;
333     tv.tv_usec = 0;
334     n = select(1, &rfds, NULL, NULL, &tv);
335     if (n > 0) {
336         n = read(0, &ch, 1);
337         if (n == 1)
338             return ch;
339
340         return n;
341     }
342 #elif HAVE_KBHIT
343 #    if HAVE_PEEKNAMEDPIPE
344     static int is_pipe;
345     static HANDLE input_handle;
346     DWORD dw, nchars;
347     if(!input_handle){
348         input_handle = GetStdHandle(STD_INPUT_HANDLE);
349         is_pipe = !GetConsoleMode(input_handle, &dw);
350     }
351
352     if (stdin->_cnt > 0) {
353         read(0, &ch, 1);
354         return ch;
355     }
356     if (is_pipe) {
357         /* When running under a GUI, you will end here. */
358         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
359             return -1;
360         //Read it
361         if(nchars != 0) {
362             read(0, &ch, 1);
363             return ch;
364         }else{
365             return -1;
366         }
367     }
368 #    endif
369     if(kbhit())
370         return(getch());
371 #endif
372     return -1;
373 }
374
375 static int decode_interrupt_cb(void *ctx)
376 {
377     return received_nb_signals > 1;
378 }
379
380 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
381
382 static void exit_program(void)
383 {
384     int i, j;
385
386     for (i = 0; i < nb_filtergraphs; i++) {
387         avfilter_graph_free(&filtergraphs[i]->graph);
388         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
389             av_freep(&filtergraphs[i]->inputs[j]->name);
390             av_freep(&filtergraphs[i]->inputs[j]);
391         }
392         av_freep(&filtergraphs[i]->inputs);
393         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
394             av_freep(&filtergraphs[i]->outputs[j]->name);
395             av_freep(&filtergraphs[i]->outputs[j]);
396         }
397         av_freep(&filtergraphs[i]->outputs);
398         av_freep(&filtergraphs[i]);
399     }
400     av_freep(&filtergraphs);
401
402     av_freep(&subtitle_out);
403
404     /* close files */
405     for (i = 0; i < nb_output_files; i++) {
406         AVFormatContext *s = output_files[i]->ctx;
407         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
408             avio_close(s->pb);
409         avformat_free_context(s);
410         av_dict_free(&output_files[i]->opts);
411         av_freep(&output_files[i]);
412     }
413     for (i = 0; i < nb_output_streams; i++) {
414         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
415         while (bsfc) {
416             AVBitStreamFilterContext *next = bsfc->next;
417             av_bitstream_filter_close(bsfc);
418             bsfc = next;
419         }
420         output_streams[i]->bitstream_filters = NULL;
421         avcodec_free_frame(&output_streams[i]->filtered_frame);
422
423         av_freep(&output_streams[i]->forced_keyframes);
424         av_freep(&output_streams[i]->avfilter);
425         av_freep(&output_streams[i]->logfile_prefix);
426         av_freep(&output_streams[i]);
427     }
428     for (i = 0; i < nb_input_files; i++) {
429         avformat_close_input(&input_files[i]->ctx);
430         av_freep(&input_files[i]);
431     }
432     for (i = 0; i < nb_input_streams; i++) {
433         avcodec_free_frame(&input_streams[i]->decoded_frame);
434         av_dict_free(&input_streams[i]->opts);
435         free_buffer_pool(&input_streams[i]->buffer_pool);
436         avfilter_unref_bufferp(&input_streams[i]->sub2video.ref);
437         av_freep(&input_streams[i]->filters);
438         av_freep(&input_streams[i]);
439     }
440
441     if (vstats_file)
442         fclose(vstats_file);
443     av_free(vstats_filename);
444
445     av_freep(&input_streams);
446     av_freep(&input_files);
447     av_freep(&output_streams);
448     av_freep(&output_files);
449
450     uninit_opts();
451
452     avfilter_uninit();
453     avformat_network_deinit();
454
455     if (received_sigterm) {
456         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
457                (int) received_sigterm);
458         exit (255);
459     }
460 }
461
462 void assert_avoptions(AVDictionary *m)
463 {
464     AVDictionaryEntry *t;
465     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
466         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
467         exit(1);
468     }
469 }
470
471 static void abort_codec_experimental(AVCodec *c, int encoder)
472 {
473     exit(1);
474 }
475
476 static void update_benchmark(const char *fmt, ...)
477 {
478     if (do_benchmark_all) {
479         int64_t t = getutime();
480         va_list va;
481         char buf[1024];
482
483         if (fmt) {
484             va_start(va, fmt);
485             vsnprintf(buf, sizeof(buf), fmt, va);
486             va_end(va);
487             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
488         }
489         current_time = t;
490     }
491 }
492
493 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
494 {
495     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
496     AVCodecContext          *avctx = ost->st->codec;
497     int ret;
498
499     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
500         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
501         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
502
503     if ((avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) && pkt->dts != AV_NOPTS_VALUE) {
504         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
505         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
506             av_log(s, max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG,
507                    "st:%d PTS: %"PRId64" DTS: %"PRId64" < %"PRId64" invalid, clipping\n", pkt->stream_index, pkt->pts, pkt->dts, max);
508             if(pkt->pts >= pkt->dts)
509                 pkt->pts = FFMAX(pkt->pts, max);
510             pkt->dts = max;
511         }
512     }
513
514     /*
515      * Audio encoders may split the packets --  #frames in != #packets out.
516      * But there is no reordering, so we can limit the number of output packets
517      * by simply dropping them here.
518      * Counting encoded video frames needs to be done separately because of
519      * reordering, see do_video_out()
520      */
521     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
522         if (ost->frame_number >= ost->max_frames) {
523             av_free_packet(pkt);
524             return;
525         }
526         ost->frame_number++;
527     }
528
529     while (bsfc) {
530         AVPacket new_pkt = *pkt;
531         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
532                                            &new_pkt.data, &new_pkt.size,
533                                            pkt->data, pkt->size,
534                                            pkt->flags & AV_PKT_FLAG_KEY);
535         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
536             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
537             if(t) {
538                 memcpy(t, new_pkt.data, new_pkt.size);
539                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
540                 new_pkt.data = t;
541                 a = 1;
542             } else
543                 a = AVERROR(ENOMEM);
544         }
545         if (a > 0) {
546             av_free_packet(pkt);
547             new_pkt.destruct = av_destruct_packet;
548         } else if (a < 0) {
549             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
550                    bsfc->filter->name, pkt->stream_index,
551                    avctx->codec ? avctx->codec->name : "copy");
552             print_error("", a);
553             if (exit_on_error)
554                 exit(1);
555         }
556         *pkt = new_pkt;
557
558         bsfc = bsfc->next;
559     }
560
561     pkt->stream_index = ost->index;
562
563     if (debug_ts) {
564         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
565                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
566                 av_get_media_type_string(ost->st->codec->codec_type),
567                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
568                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
569                 pkt->size
570               );
571     }
572
573     ret = av_interleaved_write_frame(s, pkt);
574     if (ret < 0) {
575         print_error("av_interleaved_write_frame()", ret);
576         exit(1);
577     }
578 }
579
580 static void close_output_stream(OutputStream *ost)
581 {
582     OutputFile *of = output_files[ost->file_index];
583
584     ost->finished = 1;
585     if (of->shortest) {
586         int i;
587         for (i = 0; i < of->ctx->nb_streams; i++)
588             output_streams[of->ost_index + i]->finished = 1;
589     }
590 }
591
592 static int check_recording_time(OutputStream *ost)
593 {
594     OutputFile *of = output_files[ost->file_index];
595
596     if (of->recording_time != INT64_MAX &&
597         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
598                       AV_TIME_BASE_Q) >= 0) {
599         close_output_stream(ost);
600         return 0;
601     }
602     return 1;
603 }
604
605 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
606                          AVFrame *frame)
607 {
608     AVCodecContext *enc = ost->st->codec;
609     AVPacket pkt;
610     int got_packet = 0;
611
612     av_init_packet(&pkt);
613     pkt.data = NULL;
614     pkt.size = 0;
615
616     if (!check_recording_time(ost))
617         return;
618
619     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
620         frame->pts = ost->sync_opts;
621     ost->sync_opts = frame->pts + frame->nb_samples;
622
623     av_assert0(pkt.size || !pkt.data);
624     update_benchmark(NULL);
625     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
626         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
627         exit(1);
628     }
629     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
630
631     if (got_packet) {
632         if (pkt.pts != AV_NOPTS_VALUE)
633             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
634         if (pkt.dts != AV_NOPTS_VALUE)
635             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
636         if (pkt.duration > 0)
637             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
638
639         if (debug_ts) {
640             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
641                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
642                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
643                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
644         }
645
646         audio_size += pkt.size;
647         write_frame(s, &pkt, ost);
648
649         av_free_packet(&pkt);
650     }
651 }
652
653 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
654 {
655     AVCodecContext *dec;
656     AVPicture *picture2;
657     AVPicture picture_tmp;
658     uint8_t *buf = 0;
659
660     dec = ist->st->codec;
661
662     /* deinterlace : must be done before any resize */
663     if (do_deinterlace) {
664         int size;
665
666         /* create temporary picture */
667         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
668         if (size < 0)
669             return;
670         buf  = av_malloc(size);
671         if (!buf)
672             return;
673
674         picture2 = &picture_tmp;
675         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
676
677         if (avpicture_deinterlace(picture2, picture,
678                                  dec->pix_fmt, dec->width, dec->height) < 0) {
679             /* if error, do not deinterlace */
680             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
681             av_free(buf);
682             buf = NULL;
683             picture2 = picture;
684         }
685     } else {
686         picture2 = picture;
687     }
688
689     if (picture != picture2)
690         *picture = *picture2;
691     *bufp = buf;
692 }
693
694 static void do_subtitle_out(AVFormatContext *s,
695                             OutputStream *ost,
696                             InputStream *ist,
697                             AVSubtitle *sub)
698 {
699     int subtitle_out_max_size = 1024 * 1024;
700     int subtitle_out_size, nb, i;
701     AVCodecContext *enc;
702     AVPacket pkt;
703     int64_t pts;
704
705     if (sub->pts == AV_NOPTS_VALUE) {
706         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
707         if (exit_on_error)
708             exit(1);
709         return;
710     }
711
712     enc = ost->st->codec;
713
714     if (!subtitle_out) {
715         subtitle_out = av_malloc(subtitle_out_max_size);
716     }
717
718     /* Note: DVB subtitle need one packet to draw them and one other
719        packet to clear them */
720     /* XXX: signal it in the codec context ? */
721     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
722         nb = 2;
723     else
724         nb = 1;
725
726     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
727     pts = sub->pts - output_files[ost->file_index]->start_time;
728     for (i = 0; i < nb; i++) {
729         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
730         if (!check_recording_time(ost))
731             return;
732
733         sub->pts = pts;
734         // start_display_time is required to be 0
735         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
736         sub->end_display_time  -= sub->start_display_time;
737         sub->start_display_time = 0;
738         if (i == 1)
739             sub->num_rects = 0;
740         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
741                                                     subtitle_out_max_size, sub);
742         if (subtitle_out_size < 0) {
743             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
744             exit(1);
745         }
746
747         av_init_packet(&pkt);
748         pkt.data = subtitle_out;
749         pkt.size = subtitle_out_size;
750         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
751         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
752         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
753             /* XXX: the pts correction is handled here. Maybe handling
754                it in the codec would be better */
755             if (i == 0)
756                 pkt.pts += 90 * sub->start_display_time;
757             else
758                 pkt.pts += 90 * sub->end_display_time;
759         }
760         subtitle_size += pkt.size;
761         write_frame(s, &pkt, ost);
762     }
763 }
764
765 static void do_video_out(AVFormatContext *s,
766                          OutputStream *ost,
767                          AVFrame *in_picture)
768 {
769     int ret, format_video_sync;
770     AVPacket pkt;
771     AVCodecContext *enc = ost->st->codec;
772     int nb_frames, i;
773     double sync_ipts, delta;
774     double duration = 0;
775     int frame_size = 0;
776     InputStream *ist = NULL;
777
778     if (ost->source_index >= 0)
779         ist = input_streams[ost->source_index];
780
781     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
782         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
783
784     sync_ipts = in_picture->pts;
785     delta = sync_ipts - ost->sync_opts + duration;
786
787     /* by default, we output a single frame */
788     nb_frames = 1;
789
790     format_video_sync = video_sync_method;
791     if (format_video_sync == VSYNC_AUTO)
792         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
793
794     switch (format_video_sync) {
795     case VSYNC_CFR:
796         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
797         if (delta < -1.1)
798             nb_frames = 0;
799         else if (delta > 1.1)
800             nb_frames = lrintf(delta);
801         break;
802     case VSYNC_VFR:
803         if (delta <= -0.6)
804             nb_frames = 0;
805         else if (delta > 0.6)
806             ost->sync_opts = lrint(sync_ipts);
807         break;
808     case VSYNC_DROP:
809     case VSYNC_PASSTHROUGH:
810         ost->sync_opts = lrint(sync_ipts);
811         break;
812     default:
813         av_assert0(0);
814     }
815
816     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
817     if (nb_frames == 0) {
818         nb_frames_drop++;
819         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
820         return;
821     } else if (nb_frames > 1) {
822         if (nb_frames > dts_error_threshold * 30) {
823             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
824             nb_frames_drop++;
825             return;
826         }
827         nb_frames_dup += nb_frames - 1;
828         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
829     }
830
831   /* duplicates frame if needed */
832   for (i = 0; i < nb_frames; i++) {
833     av_init_packet(&pkt);
834     pkt.data = NULL;
835     pkt.size = 0;
836
837     in_picture->pts = ost->sync_opts;
838
839     if (!check_recording_time(ost))
840         return;
841
842     if (s->oformat->flags & AVFMT_RAWPICTURE &&
843         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
844         /* raw pictures are written as AVPicture structure to
845            avoid any copies. We support temporarily the older
846            method. */
847         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
848         enc->coded_frame->top_field_first  = in_picture->top_field_first;
849         pkt.data   = (uint8_t *)in_picture;
850         pkt.size   =  sizeof(AVPicture);
851         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
852         pkt.flags |= AV_PKT_FLAG_KEY;
853
854         video_size += pkt.size;
855         write_frame(s, &pkt, ost);
856     } else {
857         int got_packet;
858         AVFrame big_picture;
859
860         big_picture = *in_picture;
861         /* better than nothing: use input picture interlaced
862            settings */
863         big_picture.interlaced_frame = in_picture->interlaced_frame;
864         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
865             if (ost->top_field_first == -1)
866                 big_picture.top_field_first = in_picture->top_field_first;
867             else
868                 big_picture.top_field_first = !!ost->top_field_first;
869         }
870
871         big_picture.quality = ost->st->codec->global_quality;
872         if (!enc->me_threshold)
873             big_picture.pict_type = 0;
874         if (ost->forced_kf_index < ost->forced_kf_count &&
875             big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
876             big_picture.pict_type = AV_PICTURE_TYPE_I;
877             ost->forced_kf_index++;
878         }
879         update_benchmark(NULL);
880         ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
881         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
882         if (ret < 0) {
883             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
884             exit(1);
885         }
886
887         if (got_packet) {
888             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
889                 pkt.pts = ost->sync_opts;
890
891             if (pkt.pts != AV_NOPTS_VALUE)
892                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
893             if (pkt.dts != AV_NOPTS_VALUE)
894                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
895
896             if (debug_ts) {
897                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
898                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
899                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
900                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
901             }
902
903             frame_size = pkt.size;
904             video_size += pkt.size;
905             write_frame(s, &pkt, ost);
906             av_free_packet(&pkt);
907
908             /* if two pass, output log */
909             if (ost->logfile && enc->stats_out) {
910                 fprintf(ost->logfile, "%s", enc->stats_out);
911             }
912         }
913     }
914     ost->sync_opts++;
915     /*
916      * For video, number of frames in == number of packets out.
917      * But there may be reordering, so we can't throw away frames on encoder
918      * flush, we need to limit them here, before they go into encoder.
919      */
920     ost->frame_number++;
921   }
922
923     if (vstats_filename && frame_size)
924         do_video_stats(output_files[ost->file_index]->ctx, ost, frame_size);
925 }
926
927 static double psnr(double d)
928 {
929     return -10.0 * log(d) / log(10.0);
930 }
931
932 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
933                            int frame_size)
934 {
935     AVCodecContext *enc;
936     int frame_number;
937     double ti1, bitrate, avg_bitrate;
938
939     /* this is executed just the first time do_video_stats is called */
940     if (!vstats_file) {
941         vstats_file = fopen(vstats_filename, "w");
942         if (!vstats_file) {
943             perror("fopen");
944             exit(1);
945         }
946     }
947
948     enc = ost->st->codec;
949     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
950         frame_number = ost->frame_number;
951         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
952         if (enc->flags&CODEC_FLAG_PSNR)
953             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
954
955         fprintf(vstats_file,"f_size= %6d ", frame_size);
956         /* compute pts value */
957         ti1 = ost->sync_opts * av_q2d(enc->time_base);
958         if (ti1 < 0.01)
959             ti1 = 0.01;
960
961         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
962         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
963         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
964                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
965         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
966     }
967 }
968
969 /*
970  * Get and encode new output from any of the filtergraphs, without causing
971  * activity.
972  *
973  * @return  0 for success, <0 for severe errors
974  */
975 static int reap_filters(void)
976 {
977     AVFilterBufferRef *picref;
978     AVFrame *filtered_frame = NULL;
979     int i;
980     int64_t frame_pts;
981
982     /* Reap all buffers present in the buffer sinks */
983     for (i = 0; i < nb_output_streams; i++) {
984         OutputStream *ost = output_streams[i];
985         OutputFile    *of = output_files[ost->file_index];
986         int ret = 0;
987
988         if (!ost->filter)
989             continue;
990
991         if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
992             return AVERROR(ENOMEM);
993         } else
994             avcodec_get_frame_defaults(ost->filtered_frame);
995         filtered_frame = ost->filtered_frame;
996
997         while (1) {
998             ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
999                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1000             if (ret < 0) {
1001                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1002                     char buf[256];
1003                     av_strerror(ret, buf, sizeof(buf));
1004                     av_log(NULL, AV_LOG_WARNING,
1005                            "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
1006                 }
1007                 break;
1008             }
1009             frame_pts = AV_NOPTS_VALUE;
1010             if (picref->pts != AV_NOPTS_VALUE) {
1011                 filtered_frame->pts = frame_pts = av_rescale_q(picref->pts,
1012                                                 ost->filter->filter->inputs[0]->time_base,
1013                                                 ost->st->codec->time_base) -
1014                                     av_rescale_q(of->start_time,
1015                                                 AV_TIME_BASE_Q,
1016                                                 ost->st->codec->time_base);
1017
1018                 if (of->start_time && filtered_frame->pts < 0) {
1019                     avfilter_unref_buffer(picref);
1020                     continue;
1021                 }
1022             }
1023             //if (ost->source_index >= 0)
1024             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1025
1026
1027             switch (ost->filter->filter->inputs[0]->type) {
1028             case AVMEDIA_TYPE_VIDEO:
1029                 avfilter_copy_buf_props(filtered_frame, picref);
1030                 filtered_frame->pts = frame_pts;
1031                 if (!ost->frame_aspect_ratio)
1032                     ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
1033
1034                 do_video_out(of->ctx, ost, filtered_frame);
1035                 break;
1036             case AVMEDIA_TYPE_AUDIO:
1037                 avfilter_copy_buf_props(filtered_frame, picref);
1038                 filtered_frame->pts = frame_pts;
1039                 do_audio_out(of->ctx, ost, filtered_frame);
1040                 break;
1041             default:
1042                 // TODO support subtitle filters
1043                 av_assert0(0);
1044             }
1045
1046             avfilter_unref_buffer(picref);
1047         }
1048     }
1049
1050     return 0;
1051 }
1052
1053 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1054 {
1055     char buf[1024];
1056     AVBPrint buf_script;
1057     OutputStream *ost;
1058     AVFormatContext *oc;
1059     int64_t total_size;
1060     AVCodecContext *enc;
1061     int frame_number, vid, i;
1062     double bitrate;
1063     int64_t pts = INT64_MIN;
1064     static int64_t last_time = -1;
1065     static int qp_histogram[52];
1066     int hours, mins, secs, us;
1067
1068     if (!print_stats && !is_last_report && !progress_avio)
1069         return;
1070
1071     if (!is_last_report) {
1072         if (last_time == -1) {
1073             last_time = cur_time;
1074             return;
1075         }
1076         if ((cur_time - last_time) < 500000)
1077             return;
1078         last_time = cur_time;
1079     }
1080
1081
1082     oc = output_files[0]->ctx;
1083
1084     total_size = avio_size(oc->pb);
1085     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
1086         total_size = avio_tell(oc->pb);
1087         if (total_size < 0)
1088             total_size = 0;
1089     }
1090
1091     buf[0] = '\0';
1092     vid = 0;
1093     av_bprint_init(&buf_script, 0, 1);
1094     for (i = 0; i < nb_output_streams; i++) {
1095         float q = -1;
1096         ost = output_streams[i];
1097         enc = ost->st->codec;
1098         if (!ost->stream_copy && enc->coded_frame)
1099             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1100         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1101             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1102             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1103                        ost->file_index, ost->index, q);
1104         }
1105         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1106             float fps, t = (cur_time-timer_start) / 1000000.0;
1107
1108             frame_number = ost->frame_number;
1109             fps = t > 1 ? frame_number / t : 0;
1110             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1111                      frame_number, fps < 9.95, fps, q);
1112             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1113             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1114             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1115                        ost->file_index, ost->index, q);
1116             if (is_last_report)
1117                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1118             if (qp_hist) {
1119                 int j;
1120                 int qp = lrintf(q);
1121                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1122                     qp_histogram[qp]++;
1123                 for (j = 0; j < 32; j++)
1124                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1125             }
1126             if (enc->flags&CODEC_FLAG_PSNR) {
1127                 int j;
1128                 double error, error_sum = 0;
1129                 double scale, scale_sum = 0;
1130                 double p;
1131                 char type[3] = { 'Y','U','V' };
1132                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1133                 for (j = 0; j < 3; j++) {
1134                     if (is_last_report) {
1135                         error = enc->error[j];
1136                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1137                     } else {
1138                         error = enc->coded_frame->error[j];
1139                         scale = enc->width * enc->height * 255.0 * 255.0;
1140                     }
1141                     if (j)
1142                         scale /= 4;
1143                     error_sum += error;
1144                     scale_sum += scale;
1145                     p = psnr(error / scale);
1146                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1147                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1148                                ost->file_index, ost->index, type[i] | 32, p);
1149                 }
1150                 p = psnr(error_sum / scale_sum);
1151                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1152                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1153                            ost->file_index, ost->index, p);
1154             }
1155             vid = 1;
1156         }
1157         /* compute min output value */
1158         if ((is_last_report || !ost->finished) && ost->st->pts.val != AV_NOPTS_VALUE)
1159             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1160                                           ost->st->time_base, AV_TIME_BASE_Q));
1161     }
1162
1163     secs = pts / AV_TIME_BASE;
1164     us = pts % AV_TIME_BASE;
1165     mins = secs / 60;
1166     secs %= 60;
1167     hours = mins / 60;
1168     mins %= 60;
1169
1170     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1171
1172     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1173              "size=%8.0fkB time=", total_size / 1024.0);
1174     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1175              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1176              (100 * us) / AV_TIME_BASE);
1177     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1178              "bitrate=%6.1fkbits/s", bitrate);
1179     av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1180     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1181     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1182                hours, mins, secs, us);
1183
1184     if (nb_frames_dup || nb_frames_drop)
1185         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1186                 nb_frames_dup, nb_frames_drop);
1187     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1188     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1189
1190     if (print_stats || is_last_report) {
1191     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1192
1193     fflush(stderr);
1194     }
1195
1196     if (progress_avio) {
1197         av_bprintf(&buf_script, "progress=%s\n",
1198                    is_last_report ? "end" : "continue");
1199         avio_write(progress_avio, buf_script.str,
1200                    FFMIN(buf_script.len, buf_script.size - 1));
1201         avio_flush(progress_avio);
1202         av_bprint_finalize(&buf_script, NULL);
1203         if (is_last_report) {
1204             avio_close(progress_avio);
1205             progress_avio = NULL;
1206         }
1207     }
1208
1209     if (is_last_report) {
1210         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1211         av_log(NULL, AV_LOG_INFO, "\n");
1212         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1213                video_size / 1024.0,
1214                audio_size / 1024.0,
1215                subtitle_size / 1024.0,
1216                extra_size / 1024.0,
1217                100.0 * (total_size - raw) / raw
1218         );
1219         if(video_size + audio_size + subtitle_size + extra_size == 0){
1220             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1221         }
1222     }
1223 }
1224
1225 static void flush_encoders(void)
1226 {
1227     int i, ret;
1228
1229     for (i = 0; i < nb_output_streams; i++) {
1230         OutputStream   *ost = output_streams[i];
1231         AVCodecContext *enc = ost->st->codec;
1232         AVFormatContext *os = output_files[ost->file_index]->ctx;
1233         int stop_encoding = 0;
1234
1235         if (!ost->encoding_needed)
1236             continue;
1237
1238         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1239             continue;
1240         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1241             continue;
1242
1243         for (;;) {
1244             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1245             const char *desc;
1246             int64_t *size;
1247
1248             switch (ost->st->codec->codec_type) {
1249             case AVMEDIA_TYPE_AUDIO:
1250                 encode = avcodec_encode_audio2;
1251                 desc   = "Audio";
1252                 size   = &audio_size;
1253                 break;
1254             case AVMEDIA_TYPE_VIDEO:
1255                 encode = avcodec_encode_video2;
1256                 desc   = "Video";
1257                 size   = &video_size;
1258                 break;
1259             default:
1260                 stop_encoding = 1;
1261             }
1262
1263             if (encode) {
1264                 AVPacket pkt;
1265                 int got_packet;
1266                 av_init_packet(&pkt);
1267                 pkt.data = NULL;
1268                 pkt.size = 0;
1269
1270                 update_benchmark(NULL);
1271                 ret = encode(enc, &pkt, NULL, &got_packet);
1272                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1273                 if (ret < 0) {
1274                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1275                     exit(1);
1276                 }
1277                 *size += pkt.size;
1278                 if (ost->logfile && enc->stats_out) {
1279                     fprintf(ost->logfile, "%s", enc->stats_out);
1280                 }
1281                 if (!got_packet) {
1282                     stop_encoding = 1;
1283                     break;
1284                 }
1285                 if (pkt.pts != AV_NOPTS_VALUE)
1286                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1287                 if (pkt.dts != AV_NOPTS_VALUE)
1288                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1289                 write_frame(os, &pkt, ost);
1290             }
1291
1292             if (stop_encoding)
1293                 break;
1294         }
1295     }
1296 }
1297
1298 /*
1299  * Check whether a packet from ist should be written into ost at this time
1300  */
1301 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1302 {
1303     OutputFile *of = output_files[ost->file_index];
1304     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1305
1306     if (ost->source_index != ist_index)
1307         return 0;
1308
1309     if (of->start_time && ist->pts < of->start_time)
1310         return 0;
1311
1312     return 1;
1313 }
1314
1315 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1316 {
1317     OutputFile *of = output_files[ost->file_index];
1318     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1319     AVPicture pict;
1320     AVPacket opkt;
1321
1322     av_init_packet(&opkt);
1323
1324     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1325         !ost->copy_initial_nonkeyframes)
1326         return;
1327
1328     if (!ost->frame_number && ist->pts < of->start_time &&
1329         !ost->copy_prior_start)
1330         return;
1331
1332     if (of->recording_time != INT64_MAX &&
1333         ist->pts >= of->recording_time + of->start_time) {
1334         close_output_stream(ost);
1335         return;
1336     }
1337
1338     /* force the input stream PTS */
1339     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1340         audio_size += pkt->size;
1341     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1342         video_size += pkt->size;
1343         ost->sync_opts++;
1344     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1345         subtitle_size += pkt->size;
1346     }
1347
1348     if (pkt->pts != AV_NOPTS_VALUE)
1349         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1350     else
1351         opkt.pts = AV_NOPTS_VALUE;
1352
1353     if (pkt->dts == AV_NOPTS_VALUE)
1354         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1355     else
1356         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1357     opkt.dts -= ost_tb_start_time;
1358
1359     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1360     opkt.flags    = pkt->flags;
1361
1362     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1363     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1364        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1365        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1366        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1367        ) {
1368         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1369             opkt.destruct = av_destruct_packet;
1370     } else {
1371         opkt.data = pkt->data;
1372         opkt.size = pkt->size;
1373     }
1374
1375     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1376         /* store AVPicture in AVPacket, as expected by the output format */
1377         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1378         opkt.data = (uint8_t *)&pict;
1379         opkt.size = sizeof(AVPicture);
1380         opkt.flags |= AV_PKT_FLAG_KEY;
1381     }
1382
1383     write_frame(of->ctx, &opkt, ost);
1384     ost->st->codec->frame_number++;
1385     av_free_packet(&opkt);
1386 }
1387
1388 static void rate_emu_sleep(InputStream *ist)
1389 {
1390     if (input_files[ist->file_index]->rate_emu) {
1391         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
1392         int64_t now = av_gettime() - ist->start;
1393         if (pts > now)
1394             av_usleep(pts - now);
1395     }
1396 }
1397
1398 int guess_input_channel_layout(InputStream *ist)
1399 {
1400     AVCodecContext *dec = ist->st->codec;
1401
1402     if (!dec->channel_layout) {
1403         char layout_name[256];
1404
1405         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1406         if (!dec->channel_layout)
1407             return 0;
1408         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1409                                      dec->channels, dec->channel_layout);
1410         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1411                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1412     }
1413     return 1;
1414 }
1415
1416 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1417 {
1418     AVFrame *decoded_frame;
1419     AVCodecContext *avctx = ist->st->codec;
1420     int i, ret, resample_changed;
1421     AVRational decoded_frame_tb;
1422
1423     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1424         return AVERROR(ENOMEM);
1425     else
1426         avcodec_get_frame_defaults(ist->decoded_frame);
1427     decoded_frame = ist->decoded_frame;
1428
1429     update_benchmark(NULL);
1430     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1431     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1432
1433     if (ret >= 0 && avctx->sample_rate <= 0) {
1434         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1435         ret = AVERROR_INVALIDDATA;
1436     }
1437
1438     if (!*got_output || ret < 0) {
1439         if (!pkt->size) {
1440             for (i = 0; i < ist->nb_filters; i++)
1441                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1442         }
1443         return ret;
1444     }
1445
1446 #if 1
1447     /* increment next_dts to use for the case where the input stream does not
1448        have timestamps or there are multiple frames in the packet */
1449     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1450                      avctx->sample_rate;
1451     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1452                      avctx->sample_rate;
1453 #endif
1454
1455     rate_emu_sleep(ist);
1456
1457     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1458                        ist->resample_channels       != avctx->channels               ||
1459                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1460                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1461     if (resample_changed) {
1462         char layout1[64], layout2[64];
1463
1464         if (!guess_input_channel_layout(ist)) {
1465             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1466                    "layout for Input Stream #%d.%d\n", ist->file_index,
1467                    ist->st->index);
1468             exit(1);
1469         }
1470         decoded_frame->channel_layout = avctx->channel_layout;
1471
1472         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1473                                      ist->resample_channel_layout);
1474         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1475                                      decoded_frame->channel_layout);
1476
1477         av_log(NULL, AV_LOG_INFO,
1478                "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",
1479                ist->file_index, ist->st->index,
1480                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1481                ist->resample_channels, layout1,
1482                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1483                avctx->channels, layout2);
1484
1485         ist->resample_sample_fmt     = decoded_frame->format;
1486         ist->resample_sample_rate    = decoded_frame->sample_rate;
1487         ist->resample_channel_layout = decoded_frame->channel_layout;
1488         ist->resample_channels       = avctx->channels;
1489
1490         for (i = 0; i < nb_filtergraphs; i++)
1491             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1492                 FilterGraph *fg = filtergraphs[i];
1493                 int j;
1494                 if (configure_filtergraph(fg) < 0) {
1495                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1496                     exit(1);
1497                 }
1498                 for (j = 0; j < fg->nb_outputs; j++) {
1499                     OutputStream *ost = fg->outputs[j]->ost;
1500                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1501                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1502                         av_buffersink_set_frame_size(ost->filter->filter,
1503                                                      ost->st->codec->frame_size);
1504                 }
1505             }
1506     }
1507
1508     /* if the decoder provides a pts, use it instead of the last packet pts.
1509        the decoder could be delaying output by a packet or more. */
1510     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1511         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1512         decoded_frame_tb   = avctx->time_base;
1513     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1514         decoded_frame->pts = decoded_frame->pkt_pts;
1515         pkt->pts           = AV_NOPTS_VALUE;
1516         decoded_frame_tb   = ist->st->time_base;
1517     } else if (pkt->pts != AV_NOPTS_VALUE) {
1518         decoded_frame->pts = pkt->pts;
1519         pkt->pts           = AV_NOPTS_VALUE;
1520         decoded_frame_tb   = ist->st->time_base;
1521     }else {
1522         decoded_frame->pts = ist->dts;
1523         decoded_frame_tb   = AV_TIME_BASE_Q;
1524     }
1525     if (decoded_frame->pts != AV_NOPTS_VALUE)
1526         decoded_frame->pts = av_rescale_q(decoded_frame->pts,
1527                                           decoded_frame_tb,
1528                                           (AVRational){1, ist->st->codec->sample_rate});
1529     for (i = 0; i < ist->nb_filters; i++)
1530         av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame,
1531                                AV_BUFFERSRC_FLAG_PUSH);
1532
1533     decoded_frame->pts = AV_NOPTS_VALUE;
1534
1535     return ret;
1536 }
1537
1538 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1539 {
1540     AVFrame *decoded_frame;
1541     void *buffer_to_free = NULL;
1542     int i, ret = 0, resample_changed;
1543     int64_t best_effort_timestamp;
1544     AVRational *frame_sample_aspect;
1545
1546     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1547         return AVERROR(ENOMEM);
1548     else
1549         avcodec_get_frame_defaults(ist->decoded_frame);
1550     decoded_frame = ist->decoded_frame;
1551     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1552
1553     update_benchmark(NULL);
1554     ret = avcodec_decode_video2(ist->st->codec,
1555                                 decoded_frame, got_output, pkt);
1556     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1557     if (!*got_output || ret < 0) {
1558         if (!pkt->size) {
1559             for (i = 0; i < ist->nb_filters; i++)
1560                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1561         }
1562         return ret;
1563     }
1564
1565     if(ist->top_field_first>=0)
1566         decoded_frame->top_field_first = ist->top_field_first;
1567
1568     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1569     if(best_effort_timestamp != AV_NOPTS_VALUE)
1570         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1571
1572     if (debug_ts) {
1573         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1574                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1575                 ist->st->index, av_ts2str(decoded_frame->pts),
1576                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1577                 best_effort_timestamp,
1578                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1579                 decoded_frame->key_frame, decoded_frame->pict_type);
1580     }
1581
1582     pkt->size = 0;
1583     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1584
1585     rate_emu_sleep(ist);
1586
1587     if (ist->st->sample_aspect_ratio.num)
1588         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1589
1590     resample_changed = ist->resample_width   != decoded_frame->width  ||
1591                        ist->resample_height  != decoded_frame->height ||
1592                        ist->resample_pix_fmt != decoded_frame->format;
1593     if (resample_changed) {
1594         av_log(NULL, AV_LOG_INFO,
1595                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1596                ist->file_index, ist->st->index,
1597                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1598                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1599
1600         ist->resample_width   = decoded_frame->width;
1601         ist->resample_height  = decoded_frame->height;
1602         ist->resample_pix_fmt = decoded_frame->format;
1603
1604         for (i = 0; i < nb_filtergraphs; i++) {
1605             if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
1606                 configure_filtergraph(filtergraphs[i]) < 0) {
1607                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1608                 exit(1);
1609             }
1610         }
1611     }
1612
1613     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1614     for (i = 0; i < ist->nb_filters; i++) {
1615         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
1616                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
1617                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
1618
1619         if (!frame_sample_aspect->num)
1620             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1621         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
1622             FrameBuffer      *buf = decoded_frame->opaque;
1623             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1624                                         decoded_frame->data, decoded_frame->linesize,
1625                                         AV_PERM_READ | AV_PERM_PRESERVE,
1626                                         ist->st->codec->width, ist->st->codec->height,
1627                                         ist->st->codec->pix_fmt);
1628
1629             avfilter_copy_frame_props(fb, decoded_frame);
1630             fb->buf->priv           = buf;
1631             fb->buf->free           = filter_release_buffer;
1632
1633             av_assert0(buf->refcount>0);
1634             buf->refcount++;
1635             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
1636                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
1637                                  AV_BUFFERSRC_FLAG_NO_COPY |
1638                                  AV_BUFFERSRC_FLAG_PUSH);
1639         } else
1640         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, AV_BUFFERSRC_FLAG_PUSH)<0) {
1641             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
1642             exit(1);
1643         }
1644
1645     }
1646
1647     av_free(buffer_to_free);
1648     return ret;
1649 }
1650
1651 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1652 {
1653     AVSubtitle subtitle;
1654     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1655                                           &subtitle, got_output, pkt);
1656     if (ret < 0 || !*got_output) {
1657         if (!pkt->size)
1658             sub2video_flush(ist);
1659         return ret;
1660     }
1661
1662     if (ist->fix_sub_duration) {
1663         if (ist->prev_sub.got_output) {
1664             int end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1665                                  1000, AV_TIME_BASE);
1666             if (end < ist->prev_sub.subtitle.end_display_time) {
1667                 av_log(ist->st->codec, AV_LOG_DEBUG,
1668                        "Subtitle duration reduced from %d to %d\n",
1669                        ist->prev_sub.subtitle.end_display_time, end);
1670                 ist->prev_sub.subtitle.end_display_time = end;
1671             }
1672         }
1673         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1674         FFSWAP(int,        ret,         ist->prev_sub.ret);
1675         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1676     }
1677
1678     sub2video_update(ist, &subtitle);
1679
1680     if (!*got_output || !subtitle.num_rects)
1681         return ret;
1682
1683     rate_emu_sleep(ist);
1684
1685     for (i = 0; i < nb_output_streams; i++) {
1686         OutputStream *ost = output_streams[i];
1687
1688         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1689             continue;
1690
1691         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
1692     }
1693
1694     avsubtitle_free(&subtitle);
1695     return ret;
1696 }
1697
1698 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1699 static int output_packet(InputStream *ist, const AVPacket *pkt)
1700 {
1701     int ret = 0, i;
1702     int got_output;
1703
1704     AVPacket avpkt;
1705     if (!ist->saw_first_ts) {
1706         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;
1707         ist->pts = 0;
1708         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1709             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1710             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1711         }
1712         ist->saw_first_ts = 1;
1713     }
1714
1715     if (ist->next_dts == AV_NOPTS_VALUE)
1716         ist->next_dts = ist->dts;
1717     if (ist->next_pts == AV_NOPTS_VALUE)
1718         ist->next_pts = ist->pts;
1719
1720     if (pkt == NULL) {
1721         /* EOF handling */
1722         av_init_packet(&avpkt);
1723         avpkt.data = NULL;
1724         avpkt.size = 0;
1725         goto handle_eof;
1726     } else {
1727         avpkt = *pkt;
1728     }
1729
1730     if (pkt->dts != AV_NOPTS_VALUE) {
1731         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1732         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1733             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1734     }
1735
1736     // while we have more to decode or while the decoder did output something on EOF
1737     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1738         int duration;
1739     handle_eof:
1740
1741         ist->pts = ist->next_pts;
1742         ist->dts = ist->next_dts;
1743
1744         if (avpkt.size && avpkt.size != pkt->size) {
1745             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1746                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1747             ist->showed_multi_packet_warning = 1;
1748         }
1749
1750         switch (ist->st->codec->codec_type) {
1751         case AVMEDIA_TYPE_AUDIO:
1752             ret = decode_audio    (ist, &avpkt, &got_output);
1753             break;
1754         case AVMEDIA_TYPE_VIDEO:
1755             ret = decode_video    (ist, &avpkt, &got_output);
1756             if (avpkt.duration) {
1757                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1758             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1759                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1760                 duration = ((int64_t)AV_TIME_BASE *
1761                                 ist->st->codec->time_base.num * ticks) /
1762                                 ist->st->codec->time_base.den;
1763             } else
1764                 duration = 0;
1765
1766             if(ist->dts != AV_NOPTS_VALUE && duration) {
1767                 ist->next_dts += duration;
1768             }else
1769                 ist->next_dts = AV_NOPTS_VALUE;
1770
1771             if (got_output)
1772                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1773             break;
1774         case AVMEDIA_TYPE_SUBTITLE:
1775             ret = transcode_subtitles(ist, &avpkt, &got_output);
1776             break;
1777         default:
1778             return -1;
1779         }
1780
1781         if (ret < 0)
1782             return ret;
1783
1784         avpkt.dts=
1785         avpkt.pts= AV_NOPTS_VALUE;
1786
1787         // touch data and size only if not EOF
1788         if (pkt) {
1789             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1790                 ret = avpkt.size;
1791             avpkt.data += ret;
1792             avpkt.size -= ret;
1793         }
1794         if (!got_output) {
1795             continue;
1796         }
1797     }
1798
1799     /* handle stream copy */
1800     if (!ist->decoding_needed) {
1801         rate_emu_sleep(ist);
1802         ist->dts = ist->next_dts;
1803         switch (ist->st->codec->codec_type) {
1804         case AVMEDIA_TYPE_AUDIO:
1805             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1806                              ist->st->codec->sample_rate;
1807             break;
1808         case AVMEDIA_TYPE_VIDEO:
1809             if (pkt->duration) {
1810                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1811             } else if(ist->st->codec->time_base.num != 0) {
1812                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1813                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1814                                   ist->st->codec->time_base.num * ticks) /
1815                                   ist->st->codec->time_base.den;
1816             }
1817             break;
1818         }
1819         ist->pts = ist->dts;
1820         ist->next_pts = ist->next_dts;
1821     }
1822     for (i = 0; pkt && i < nb_output_streams; i++) {
1823         OutputStream *ost = output_streams[i];
1824
1825         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1826             continue;
1827
1828         do_streamcopy(ist, ost, pkt);
1829     }
1830
1831     return 0;
1832 }
1833
1834 static void print_sdp(void)
1835 {
1836     char sdp[2048];
1837     int i;
1838     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1839
1840     if (!avc)
1841         exit(1);
1842     for (i = 0; i < nb_output_files; i++)
1843         avc[i] = output_files[i]->ctx;
1844
1845     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1846     printf("SDP:\n%s\n", sdp);
1847     fflush(stdout);
1848     av_freep(&avc);
1849 }
1850
1851 static int init_input_stream(int ist_index, char *error, int error_len)
1852 {
1853     int ret;
1854     InputStream *ist = input_streams[ist_index];
1855
1856     if (ist->decoding_needed) {
1857         AVCodec *codec = ist->dec;
1858         if (!codec) {
1859             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1860                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1861             return AVERROR(EINVAL);
1862         }
1863
1864         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
1865         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
1866             ist->st->codec->get_buffer     = codec_get_buffer;
1867             ist->st->codec->release_buffer = codec_release_buffer;
1868             ist->st->codec->opaque         = &ist->buffer_pool;
1869         }
1870
1871         if (!av_dict_get(ist->opts, "threads", NULL, 0))
1872             av_dict_set(&ist->opts, "threads", "auto", 0);
1873         if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
1874             if (ret == AVERROR_EXPERIMENTAL)
1875                 abort_codec_experimental(codec, 0);
1876             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1877                     ist->file_index, ist->st->index);
1878             return ret;
1879         }
1880         assert_avoptions(ist->opts);
1881     }
1882
1883     ist->next_pts = AV_NOPTS_VALUE;
1884     ist->next_dts = AV_NOPTS_VALUE;
1885     ist->is_start = 1;
1886
1887     return 0;
1888 }
1889
1890 static InputStream *get_input_stream(OutputStream *ost)
1891 {
1892     if (ost->source_index >= 0)
1893         return input_streams[ost->source_index];
1894     return NULL;
1895 }
1896
1897 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1898                                     AVCodecContext *avctx)
1899 {
1900     char *p;
1901     int n = 1, i;
1902     int64_t t;
1903
1904     for (p = kf; *p; p++)
1905         if (*p == ',')
1906             n++;
1907     ost->forced_kf_count = n;
1908     ost->forced_kf_pts   = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1909     if (!ost->forced_kf_pts) {
1910         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1911         exit(1);
1912     }
1913
1914     p = kf;
1915     for (i = 0; i < n; i++) {
1916         char *next = strchr(p, ',');
1917
1918         if (next)
1919             *next++ = 0;
1920
1921         t = parse_time_or_die("force_key_frames", p, 1);
1922         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1923
1924         p = next;
1925     }
1926 }
1927
1928 static void report_new_stream(int input_index, AVPacket *pkt)
1929 {
1930     InputFile *file = input_files[input_index];
1931     AVStream *st = file->ctx->streams[pkt->stream_index];
1932
1933     if (pkt->stream_index < file->nb_streams_warn)
1934         return;
1935     av_log(file->ctx, AV_LOG_WARNING,
1936            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
1937            av_get_media_type_string(st->codec->codec_type),
1938            input_index, pkt->stream_index,
1939            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
1940     file->nb_streams_warn = pkt->stream_index + 1;
1941 }
1942
1943 static int transcode_init(void)
1944 {
1945     int ret = 0, i, j, k;
1946     AVFormatContext *oc;
1947     AVCodecContext *codec;
1948     OutputStream *ost;
1949     InputStream *ist;
1950     char error[1024];
1951     int want_sdp = 1;
1952
1953     /* init framerate emulation */
1954     for (i = 0; i < nb_input_files; i++) {
1955         InputFile *ifile = input_files[i];
1956         if (ifile->rate_emu)
1957             for (j = 0; j < ifile->nb_streams; j++)
1958                 input_streams[j + ifile->ist_index]->start = av_gettime();
1959     }
1960
1961     /* output stream init */
1962     for (i = 0; i < nb_output_files; i++) {
1963         oc = output_files[i]->ctx;
1964         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
1965             av_dump_format(oc, i, oc->filename, 1);
1966             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
1967             return AVERROR(EINVAL);
1968         }
1969     }
1970
1971     /* init complex filtergraphs */
1972     for (i = 0; i < nb_filtergraphs; i++)
1973         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
1974             return ret;
1975
1976     /* for each output stream, we compute the right encoding parameters */
1977     for (i = 0; i < nb_output_streams; i++) {
1978         AVCodecContext *icodec = NULL;
1979         ost = output_streams[i];
1980         oc  = output_files[ost->file_index]->ctx;
1981         ist = get_input_stream(ost);
1982
1983         if (ost->attachment_filename)
1984             continue;
1985
1986         codec  = ost->st->codec;
1987
1988         if (ist) {
1989             icodec = ist->st->codec;
1990
1991             ost->st->disposition          = ist->st->disposition;
1992             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
1993             codec->chroma_sample_location = icodec->chroma_sample_location;
1994         }
1995
1996         if (ost->stream_copy) {
1997             uint64_t extra_size;
1998
1999             av_assert0(ist && !ost->filter);
2000
2001             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2002
2003             if (extra_size > INT_MAX) {
2004                 return AVERROR(EINVAL);
2005             }
2006
2007             /* if stream_copy is selected, no need to decode or encode */
2008             codec->codec_id   = icodec->codec_id;
2009             codec->codec_type = icodec->codec_type;
2010
2011             if (!codec->codec_tag) {
2012                 if (!oc->oformat->codec_tag ||
2013                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2014                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2015                     codec->codec_tag = icodec->codec_tag;
2016             }
2017
2018             codec->bit_rate       = icodec->bit_rate;
2019             codec->rc_max_rate    = icodec->rc_max_rate;
2020             codec->rc_buffer_size = icodec->rc_buffer_size;
2021             codec->field_order    = icodec->field_order;
2022             codec->extradata      = av_mallocz(extra_size);
2023             if (!codec->extradata) {
2024                 return AVERROR(ENOMEM);
2025             }
2026             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2027             codec->extradata_size= icodec->extradata_size;
2028             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2029
2030             codec->time_base = ist->st->time_base;
2031             /*
2032              * Avi is a special case here because it supports variable fps but
2033              * having the fps and timebase differe significantly adds quite some
2034              * overhead
2035              */
2036             if(!strcmp(oc->oformat->name, "avi")) {
2037                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2038                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2039                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2040                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2041                      || copy_tb==2){
2042                     codec->time_base.num = ist->st->r_frame_rate.den;
2043                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2044                     codec->ticks_per_frame = 2;
2045                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2046                                  && av_q2d(ist->st->time_base) < 1.0/500
2047                     || copy_tb==0){
2048                     codec->time_base = icodec->time_base;
2049                     codec->time_base.num *= icodec->ticks_per_frame;
2050                     codec->time_base.den *= 2;
2051                     codec->ticks_per_frame = 2;
2052                 }
2053             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2054                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2055                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2056                       && strcmp(oc->oformat->name, "f4v")
2057             ) {
2058                 if(   copy_tb<0 && icodec->time_base.den
2059                                 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2060                                 && av_q2d(ist->st->time_base) < 1.0/500
2061                    || copy_tb==0){
2062                     codec->time_base = icodec->time_base;
2063                     codec->time_base.num *= icodec->ticks_per_frame;
2064                 }
2065             }
2066
2067             if(ost->frame_rate.num)
2068                 codec->time_base = av_inv_q(ost->frame_rate);
2069
2070             av_reduce(&codec->time_base.num, &codec->time_base.den,
2071                         codec->time_base.num, codec->time_base.den, INT_MAX);
2072
2073             switch (codec->codec_type) {
2074             case AVMEDIA_TYPE_AUDIO:
2075                 if (audio_volume != 256) {
2076                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2077                     exit(1);
2078                 }
2079                 codec->channel_layout     = icodec->channel_layout;
2080                 codec->sample_rate        = icodec->sample_rate;
2081                 codec->channels           = icodec->channels;
2082                 codec->frame_size         = icodec->frame_size;
2083                 codec->audio_service_type = icodec->audio_service_type;
2084                 codec->block_align        = icodec->block_align;
2085                 if((codec->block_align == 1 || codec->block_align == 1152) && codec->codec_id == AV_CODEC_ID_MP3)
2086                     codec->block_align= 0;
2087                 if(codec->codec_id == AV_CODEC_ID_AC3)
2088                     codec->block_align= 0;
2089                 break;
2090             case AVMEDIA_TYPE_VIDEO:
2091                 codec->pix_fmt            = icodec->pix_fmt;
2092                 codec->width              = icodec->width;
2093                 codec->height             = icodec->height;
2094                 codec->has_b_frames       = icodec->has_b_frames;
2095                 if (!codec->sample_aspect_ratio.num) {
2096                     codec->sample_aspect_ratio   =
2097                     ost->st->sample_aspect_ratio =
2098                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2099                         ist->st->codec->sample_aspect_ratio.num ?
2100                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2101                 }
2102                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2103                 break;
2104             case AVMEDIA_TYPE_SUBTITLE:
2105                 codec->width  = icodec->width;
2106                 codec->height = icodec->height;
2107                 break;
2108             case AVMEDIA_TYPE_DATA:
2109             case AVMEDIA_TYPE_ATTACHMENT:
2110                 break;
2111             default:
2112                 abort();
2113             }
2114         } else {
2115             if (!ost->enc)
2116                 ost->enc = avcodec_find_encoder(codec->codec_id);
2117             if (!ost->enc) {
2118                 /* should only happen when a default codec is not present. */
2119                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2120                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2121                 ret = AVERROR(EINVAL);
2122                 goto dump_format;
2123             }
2124
2125             if (ist)
2126                 ist->decoding_needed++;
2127             ost->encoding_needed = 1;
2128
2129             if (!ost->filter &&
2130                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2131                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2132                     FilterGraph *fg;
2133                     fg = init_simple_filtergraph(ist, ost);
2134                     if (configure_filtergraph(fg)) {
2135                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2136                         exit(1);
2137                     }
2138             }
2139
2140             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2141                 if (ost->filter && !ost->frame_rate.num)
2142                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2143                 if (ist && !ost->frame_rate.num)
2144                     ost->frame_rate = ist->framerate;
2145                 if (ist && !ost->frame_rate.num)
2146                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2147 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2148                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2149                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2150                     ost->frame_rate = ost->enc->supported_framerates[idx];
2151                 }
2152             }
2153
2154             switch (codec->codec_type) {
2155             case AVMEDIA_TYPE_AUDIO:
2156                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2157                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2158                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2159                 codec->channels       = av_get_channel_layout_nb_channels(codec->channel_layout);
2160                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2161                 break;
2162             case AVMEDIA_TYPE_VIDEO:
2163                 codec->time_base = av_inv_q(ost->frame_rate);
2164                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2165                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2166                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2167                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2168                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2169                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2170                 }
2171                 for (j = 0; j < ost->forced_kf_count; j++)
2172                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2173                                                          AV_TIME_BASE_Q,
2174                                                          codec->time_base);
2175
2176                 codec->width  = ost->filter->filter->inputs[0]->w;
2177                 codec->height = ost->filter->filter->inputs[0]->h;
2178                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2179                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
2180                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
2181                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2182                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2183
2184                 if (!icodec ||
2185                     codec->width   != icodec->width  ||
2186                     codec->height  != icodec->height ||
2187                     codec->pix_fmt != icodec->pix_fmt) {
2188                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2189                 }
2190
2191                 if (ost->forced_keyframes)
2192                     parse_forced_key_frames(ost->forced_keyframes, ost,
2193                                             ost->st->codec);
2194                 break;
2195             case AVMEDIA_TYPE_SUBTITLE:
2196                 codec->time_base = (AVRational){1, 1000};
2197                 if (!codec->width) {
2198                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2199                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2200                 }
2201                 break;
2202             default:
2203                 abort();
2204                 break;
2205             }
2206             /* two pass mode */
2207             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2208                 char logfilename[1024];
2209                 FILE *f;
2210
2211                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2212                          ost->logfile_prefix ? ost->logfile_prefix :
2213                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2214                          i);
2215                 if (!strcmp(ost->enc->name, "libx264")) {
2216                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2217                 } else {
2218                     if (codec->flags & CODEC_FLAG_PASS2) {
2219                         char  *logbuffer;
2220                         size_t logbuffer_size;
2221                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2222                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2223                                    logfilename);
2224                             exit(1);
2225                         }
2226                         codec->stats_in = logbuffer;
2227                     }
2228                     if (codec->flags & CODEC_FLAG_PASS1) {
2229                         f = fopen(logfilename, "wb");
2230                         if (!f) {
2231                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2232                                 logfilename, strerror(errno));
2233                             exit(1);
2234                         }
2235                         ost->logfile = f;
2236                     }
2237                 }
2238             }
2239         }
2240     }
2241
2242     /* open each encoder */
2243     for (i = 0; i < nb_output_streams; i++) {
2244         ost = output_streams[i];
2245         if (ost->encoding_needed) {
2246             AVCodec      *codec = ost->enc;
2247             AVCodecContext *dec = NULL;
2248
2249             if ((ist = get_input_stream(ost)))
2250                 dec = ist->st->codec;
2251             if (dec && dec->subtitle_header) {
2252                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2253                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2254                 if (!ost->st->codec->subtitle_header) {
2255                     ret = AVERROR(ENOMEM);
2256                     goto dump_format;
2257                 }
2258                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2259                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2260             }
2261             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2262                 av_dict_set(&ost->opts, "threads", "auto", 0);
2263             if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
2264                 if (ret == AVERROR_EXPERIMENTAL)
2265                     abort_codec_experimental(codec, 1);
2266                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2267                         ost->file_index, ost->index);
2268                 goto dump_format;
2269             }
2270             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2271                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2272                 av_buffersink_set_frame_size(ost->filter->filter,
2273                                              ost->st->codec->frame_size);
2274             assert_avoptions(ost->opts);
2275             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2276                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2277                                              " It takes bits/s as argument, not kbits/s\n");
2278             extra_size += ost->st->codec->extradata_size;
2279
2280             if (ost->st->codec->me_threshold)
2281                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
2282         }
2283     }
2284
2285     /* init input streams */
2286     for (i = 0; i < nb_input_streams; i++)
2287         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
2288             goto dump_format;
2289
2290     /* discard unused programs */
2291     for (i = 0; i < nb_input_files; i++) {
2292         InputFile *ifile = input_files[i];
2293         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2294             AVProgram *p = ifile->ctx->programs[j];
2295             int discard  = AVDISCARD_ALL;
2296
2297             for (k = 0; k < p->nb_stream_indexes; k++)
2298                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2299                     discard = AVDISCARD_DEFAULT;
2300                     break;
2301                 }
2302             p->discard = discard;
2303         }
2304     }
2305
2306     /* open files and write file headers */
2307     for (i = 0; i < nb_output_files; i++) {
2308         oc = output_files[i]->ctx;
2309         oc->interrupt_callback = int_cb;
2310         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2311             char errbuf[128];
2312             const char *errbuf_ptr = errbuf;
2313             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
2314                 errbuf_ptr = strerror(AVUNERROR(ret));
2315             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
2316             ret = AVERROR(EINVAL);
2317             goto dump_format;
2318         }
2319 //         assert_avoptions(output_files[i]->opts);
2320         if (strcmp(oc->oformat->name, "rtp")) {
2321             want_sdp = 0;
2322         }
2323     }
2324
2325  dump_format:
2326     /* dump the file output parameters - cannot be done before in case
2327        of stream copy */
2328     for (i = 0; i < nb_output_files; i++) {
2329         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2330     }
2331
2332     /* dump the stream mapping */
2333     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2334     for (i = 0; i < nb_input_streams; i++) {
2335         ist = input_streams[i];
2336
2337         for (j = 0; j < ist->nb_filters; j++) {
2338             if (ist->filters[j]->graph->graph_desc) {
2339                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2340                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2341                        ist->filters[j]->name);
2342                 if (nb_filtergraphs > 1)
2343                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2344                 av_log(NULL, AV_LOG_INFO, "\n");
2345             }
2346         }
2347     }
2348
2349     for (i = 0; i < nb_output_streams; i++) {
2350         ost = output_streams[i];
2351
2352         if (ost->attachment_filename) {
2353             /* an attached file */
2354             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2355                    ost->attachment_filename, ost->file_index, ost->index);
2356             continue;
2357         }
2358
2359         if (ost->filter && ost->filter->graph->graph_desc) {
2360             /* output from a complex graph */
2361             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2362             if (nb_filtergraphs > 1)
2363                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2364
2365             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2366                    ost->index, ost->enc ? ost->enc->name : "?");
2367             continue;
2368         }
2369
2370         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2371                input_streams[ost->source_index]->file_index,
2372                input_streams[ost->source_index]->st->index,
2373                ost->file_index,
2374                ost->index);
2375         if (ost->sync_ist != input_streams[ost->source_index])
2376             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2377                    ost->sync_ist->file_index,
2378                    ost->sync_ist->st->index);
2379         if (ost->stream_copy)
2380             av_log(NULL, AV_LOG_INFO, " (copy)");
2381         else
2382             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2383                    input_streams[ost->source_index]->dec->name : "?",
2384                    ost->enc ? ost->enc->name : "?");
2385         av_log(NULL, AV_LOG_INFO, "\n");
2386     }
2387
2388     if (ret) {
2389         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2390         return ret;
2391     }
2392
2393     if (want_sdp) {
2394         print_sdp();
2395     }
2396
2397     return 0;
2398 }
2399
2400 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2401 static int need_output(void)
2402 {
2403     int i;
2404
2405     for (i = 0; i < nb_output_streams; i++) {
2406         OutputStream *ost    = output_streams[i];
2407         OutputFile *of       = output_files[ost->file_index];
2408         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2409
2410         if (ost->finished ||
2411             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2412             continue;
2413         if (ost->frame_number >= ost->max_frames) {
2414             int j;
2415             for (j = 0; j < of->ctx->nb_streams; j++)
2416                 close_output_stream(output_streams[of->ost_index + j]);
2417             continue;
2418         }
2419
2420         return 1;
2421     }
2422
2423     return 0;
2424 }
2425
2426 /**
2427  * Select the output stream to process.
2428  *
2429  * @return  selected output stream, or NULL if none available
2430  */
2431 static OutputStream *choose_output(void)
2432 {
2433     int i;
2434     int64_t opts_min = INT64_MAX;
2435     OutputStream *ost_min = NULL;
2436
2437     for (i = 0; i < nb_output_streams; i++) {
2438         OutputStream *ost = output_streams[i];
2439         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2440                                     AV_TIME_BASE_Q);
2441         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2442             opts_min = opts;
2443             ost_min  = ost;
2444         }
2445     }
2446     return ost_min;
2447 }
2448
2449 static int check_keyboard_interaction(int64_t cur_time)
2450 {
2451     int i, ret, key;
2452     static int64_t last_time;
2453     if (received_nb_signals)
2454         return AVERROR_EXIT;
2455     /* read_key() returns 0 on EOF */
2456     if(cur_time - last_time >= 100000 && !run_as_daemon){
2457         key =  read_key();
2458         last_time = cur_time;
2459     }else
2460         key = -1;
2461     if (key == 'q')
2462         return AVERROR_EXIT;
2463     if (key == '+') av_log_set_level(av_log_get_level()+10);
2464     if (key == '-') av_log_set_level(av_log_get_level()-10);
2465     if (key == 's') qp_hist     ^= 1;
2466     if (key == 'h'){
2467         if (do_hex_dump){
2468             do_hex_dump = do_pkt_dump = 0;
2469         } else if(do_pkt_dump){
2470             do_hex_dump = 1;
2471         } else
2472             do_pkt_dump = 1;
2473         av_log_set_level(AV_LOG_DEBUG);
2474     }
2475     if (key == 'c' || key == 'C'){
2476         char buf[4096], target[64], command[256], arg[256] = {0};
2477         double time;
2478         int k, n = 0;
2479         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2480         i = 0;
2481         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2482             if (k > 0)
2483                 buf[i++] = k;
2484         buf[i] = 0;
2485         if (k > 0 &&
2486             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2487             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2488                    target, time, command, arg);
2489             for (i = 0; i < nb_filtergraphs; i++) {
2490                 FilterGraph *fg = filtergraphs[i];
2491                 if (fg->graph) {
2492                     if (time < 0) {
2493                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2494                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2495                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2496                     } else {
2497                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2498                     }
2499                 }
2500             }
2501         } else {
2502             av_log(NULL, AV_LOG_ERROR,
2503                    "Parse error, at least 3 arguments were expected, "
2504                    "only %d given in string '%s'\n", n, buf);
2505         }
2506     }
2507     if (key == 'd' || key == 'D'){
2508         int debug=0;
2509         if(key == 'D') {
2510             debug = input_streams[0]->st->codec->debug<<1;
2511             if(!debug) debug = 1;
2512             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2513                 debug += debug;
2514         }else
2515             if(scanf("%d", &debug)!=1)
2516                 fprintf(stderr,"error parsing debug value\n");
2517         for(i=0;i<nb_input_streams;i++) {
2518             input_streams[i]->st->codec->debug = debug;
2519         }
2520         for(i=0;i<nb_output_streams;i++) {
2521             OutputStream *ost = output_streams[i];
2522             ost->st->codec->debug = debug;
2523         }
2524         if(debug) av_log_set_level(AV_LOG_DEBUG);
2525         fprintf(stderr,"debug=%d\n", debug);
2526     }
2527     if (key == '?'){
2528         fprintf(stderr, "key    function\n"
2529                         "?      show this help\n"
2530                         "+      increase verbosity\n"
2531                         "-      decrease verbosity\n"
2532                         "c      Send command to filtergraph\n"
2533                         "D      cycle through available debug modes\n"
2534                         "h      dump packets/hex press to cycle through the 3 states\n"
2535                         "q      quit\n"
2536                         "s      Show QP histogram\n"
2537         );
2538     }
2539     return 0;
2540 }
2541
2542 #if HAVE_PTHREADS
2543 static void *input_thread(void *arg)
2544 {
2545     InputFile *f = arg;
2546     int ret = 0;
2547
2548     while (!transcoding_finished && ret >= 0) {
2549         AVPacket pkt;
2550         ret = av_read_frame(f->ctx, &pkt);
2551
2552         if (ret == AVERROR(EAGAIN)) {
2553             av_usleep(10000);
2554             ret = 0;
2555             continue;
2556         } else if (ret < 0)
2557             break;
2558
2559         pthread_mutex_lock(&f->fifo_lock);
2560         while (!av_fifo_space(f->fifo))
2561             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2562
2563         av_dup_packet(&pkt);
2564         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2565
2566         pthread_mutex_unlock(&f->fifo_lock);
2567     }
2568
2569     f->finished = 1;
2570     return NULL;
2571 }
2572
2573 static void free_input_threads(void)
2574 {
2575     int i;
2576
2577     if (nb_input_files == 1)
2578         return;
2579
2580     transcoding_finished = 1;
2581
2582     for (i = 0; i < nb_input_files; i++) {
2583         InputFile *f = input_files[i];
2584         AVPacket pkt;
2585
2586         if (!f->fifo || f->joined)
2587             continue;
2588
2589         pthread_mutex_lock(&f->fifo_lock);
2590         while (av_fifo_size(f->fifo)) {
2591             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2592             av_free_packet(&pkt);
2593         }
2594         pthread_cond_signal(&f->fifo_cond);
2595         pthread_mutex_unlock(&f->fifo_lock);
2596
2597         pthread_join(f->thread, NULL);
2598         f->joined = 1;
2599
2600         while (av_fifo_size(f->fifo)) {
2601             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2602             av_free_packet(&pkt);
2603         }
2604         av_fifo_free(f->fifo);
2605     }
2606 }
2607
2608 static int init_input_threads(void)
2609 {
2610     int i, ret;
2611
2612     if (nb_input_files == 1)
2613         return 0;
2614
2615     for (i = 0; i < nb_input_files; i++) {
2616         InputFile *f = input_files[i];
2617
2618         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2619             return AVERROR(ENOMEM);
2620
2621         pthread_mutex_init(&f->fifo_lock, NULL);
2622         pthread_cond_init (&f->fifo_cond, NULL);
2623
2624         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2625             return AVERROR(ret);
2626     }
2627     return 0;
2628 }
2629
2630 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2631 {
2632     int ret = 0;
2633
2634     pthread_mutex_lock(&f->fifo_lock);
2635
2636     if (av_fifo_size(f->fifo)) {
2637         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2638         pthread_cond_signal(&f->fifo_cond);
2639     } else {
2640         if (f->finished)
2641             ret = AVERROR_EOF;
2642         else
2643             ret = AVERROR(EAGAIN);
2644     }
2645
2646     pthread_mutex_unlock(&f->fifo_lock);
2647
2648     return ret;
2649 }
2650 #endif
2651
2652 static int get_input_packet(InputFile *f, AVPacket *pkt)
2653 {
2654 #if HAVE_PTHREADS
2655     if (nb_input_files > 1)
2656         return get_input_packet_mt(f, pkt);
2657 #endif
2658     return av_read_frame(f->ctx, pkt);
2659 }
2660
2661 static int got_eagain(void)
2662 {
2663     int i;
2664     for (i = 0; i < nb_output_streams; i++)
2665         if (output_streams[i]->unavailable)
2666             return 1;
2667     return 0;
2668 }
2669
2670 static void reset_eagain(void)
2671 {
2672     int i;
2673     for (i = 0; i < nb_input_files; i++)
2674         input_files[i]->eagain = 0;
2675     for (i = 0; i < nb_output_streams; i++)
2676         output_streams[i]->unavailable = 0;
2677 }
2678
2679 /*
2680  * Return
2681  * - 0 -- one packet was read and processed
2682  * - AVERROR(EAGAIN) -- no packets were available for selected file,
2683  *   this function should be called again
2684  * - AVERROR_EOF -- this function should not be called again
2685  */
2686 static int process_input(int file_index)
2687 {
2688     InputFile *ifile = input_files[file_index];
2689     AVFormatContext *is;
2690     InputStream *ist;
2691     AVPacket pkt;
2692     int ret, i, j;
2693
2694     is  = ifile->ctx;
2695     ret = get_input_packet(ifile, &pkt);
2696
2697     if (ret == AVERROR(EAGAIN)) {
2698         ifile->eagain = 1;
2699         return ret;
2700     }
2701     if (ret < 0) {
2702         if (ret != AVERROR_EOF) {
2703             print_error(is->filename, ret);
2704             if (exit_on_error)
2705                 exit(1);
2706         }
2707         ifile->eof_reached = 1;
2708
2709         for (i = 0; i < ifile->nb_streams; i++) {
2710             ist = input_streams[ifile->ist_index + i];
2711             if (ist->decoding_needed)
2712                 output_packet(ist, NULL);
2713
2714             /* mark all outputs that don't go through lavfi as finished */
2715             for (j = 0; j < nb_output_streams; j++) {
2716                 OutputStream *ost = output_streams[j];
2717
2718                 if (ost->source_index == ifile->ist_index + i &&
2719                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2720                     close_output_stream(ost);
2721             }
2722         }
2723
2724         return AVERROR(EAGAIN);
2725     }
2726
2727     reset_eagain();
2728
2729     if (do_pkt_dump) {
2730         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2731                          is->streams[pkt.stream_index]);
2732     }
2733     /* the following test is needed in case new streams appear
2734        dynamically in stream : we ignore them */
2735     if (pkt.stream_index >= ifile->nb_streams) {
2736         report_new_stream(file_index, &pkt);
2737         goto discard_packet;
2738     }
2739
2740     ist = input_streams[ifile->ist_index + pkt.stream_index];
2741     if (ist->discard)
2742         goto discard_packet;
2743
2744     if(!ist->wrap_correction_done && input_files[file_index]->ctx->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
2745         int64_t stime = av_rescale_q(input_files[file_index]->ctx->start_time, AV_TIME_BASE_Q, ist->st->time_base);
2746         int64_t stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
2747         ist->wrap_correction_done = 1;
2748
2749         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2750             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
2751             ist->wrap_correction_done = 0;
2752         }
2753         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2754             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
2755             ist->wrap_correction_done = 0;
2756         }
2757     }
2758
2759     if (pkt.dts != AV_NOPTS_VALUE)
2760         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2761     if (pkt.pts != AV_NOPTS_VALUE)
2762         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2763
2764     if (pkt.pts != AV_NOPTS_VALUE)
2765         pkt.pts *= ist->ts_scale;
2766     if (pkt.dts != AV_NOPTS_VALUE)
2767         pkt.dts *= ist->ts_scale;
2768
2769     if (debug_ts) {
2770         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
2771                 "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:%"PRId64"\n",
2772                 ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2773                 av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
2774                 av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
2775                 av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2776                 av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2777                 input_files[ist->file_index]->ts_offset);
2778     }
2779
2780     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2781         !copy_ts) {
2782         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2783         int64_t delta   = pkt_dts - ist->next_dts;
2784         if (is->iformat->flags & AVFMT_TS_DISCONT) {
2785         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2786             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2787                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2788             pkt_dts+1<ist->pts){
2789             ifile->ts_offset -= delta;
2790             av_log(NULL, AV_LOG_DEBUG,
2791                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2792                    delta, ifile->ts_offset);
2793             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2794             if (pkt.pts != AV_NOPTS_VALUE)
2795                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2796         }
2797         } else {
2798             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2799                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2800                ) {
2801                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
2802                 pkt.dts = AV_NOPTS_VALUE;
2803             }
2804             if (pkt.pts != AV_NOPTS_VALUE){
2805                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
2806                 delta   = pkt_pts - ist->next_dts;
2807                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2808                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2809                    ) {
2810                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
2811                     pkt.pts = AV_NOPTS_VALUE;
2812                 }
2813             }
2814         }
2815     }
2816
2817     sub2video_heartbeat(ist, pkt.pts);
2818
2819     ret = output_packet(ist, &pkt);
2820     if (ret < 0) {
2821         char buf[128];
2822         av_strerror(ret, buf, sizeof(buf));
2823         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
2824                 ist->file_index, ist->st->index, buf);
2825         if (exit_on_error)
2826             exit(1);
2827     }
2828
2829 discard_packet:
2830     av_free_packet(&pkt);
2831
2832     return 0;
2833 }
2834
2835 /**
2836  * Perform a step of transcoding for the specified filter graph.
2837  *
2838  * @param[in]  graph     filter graph to consider
2839  * @param[out] best_ist  input stream where a frame would allow to continue
2840  * @return  0 for success, <0 for error
2841  */
2842 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
2843 {
2844     int i, ret;
2845     int nb_requests, nb_requests_max = 0;
2846     InputFilter *ifilter;
2847     InputStream *ist;
2848
2849     *best_ist = NULL;
2850     ret = avfilter_graph_request_oldest(graph->graph);
2851     if (ret >= 0)
2852         return reap_filters();
2853
2854     if (ret == AVERROR_EOF) {
2855         ret = reap_filters();
2856         for (i = 0; i < graph->nb_outputs; i++)
2857             close_output_stream(graph->outputs[i]->ost);
2858         return ret;
2859     }
2860     if (ret != AVERROR(EAGAIN))
2861         return ret;
2862
2863     for (i = 0; i < graph->nb_inputs; i++) {
2864         ifilter = graph->inputs[i];
2865         ist = ifilter->ist;
2866         if (input_files[ist->file_index]->eagain ||
2867             input_files[ist->file_index]->eof_reached)
2868             continue;
2869         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
2870         if (nb_requests > nb_requests_max) {
2871             nb_requests_max = nb_requests;
2872             *best_ist = ist;
2873         }
2874     }
2875
2876     if (!*best_ist)
2877         for (i = 0; i < graph->nb_outputs; i++)
2878             graph->outputs[i]->ost->unavailable = 1;
2879
2880     return 0;
2881 }
2882
2883 /**
2884  * Run a single step of transcoding.
2885  *
2886  * @return  0 for success, <0 for error
2887  */
2888 static int transcode_step(void)
2889 {
2890     OutputStream *ost;
2891     InputStream  *ist;
2892     int ret;
2893
2894     ost = choose_output();
2895     if (!ost) {
2896         if (got_eagain()) {
2897             reset_eagain();
2898             av_usleep(10000);
2899             return 0;
2900         }
2901         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
2902         return AVERROR_EOF;
2903     }
2904
2905     if (ost->filter) {
2906         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
2907             return ret;
2908         if (!ist)
2909             return 0;
2910     } else {
2911         av_assert0(ost->source_index >= 0);
2912         ist = input_streams[ost->source_index];
2913     }
2914
2915     ret = process_input(ist->file_index);
2916     if (ret == AVERROR(EAGAIN)) {
2917         if (input_files[ist->file_index]->eagain)
2918             ost->unavailable = 1;
2919         return 0;
2920     }
2921     if (ret < 0)
2922         return ret == AVERROR_EOF ? 0 : ret;
2923
2924     return reap_filters();
2925 }
2926
2927 /*
2928  * The following code is the main loop of the file converter
2929  */
2930 static int transcode(void)
2931 {
2932     int ret, i;
2933     AVFormatContext *os;
2934     OutputStream *ost;
2935     InputStream *ist;
2936     int64_t timer_start;
2937
2938     ret = transcode_init();
2939     if (ret < 0)
2940         goto fail;
2941
2942     if (stdin_interaction) {
2943         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
2944     }
2945
2946     timer_start = av_gettime();
2947
2948 #if HAVE_PTHREADS
2949     if ((ret = init_input_threads()) < 0)
2950         goto fail;
2951 #endif
2952
2953     while (!received_sigterm) {
2954         int64_t cur_time= av_gettime();
2955
2956         /* if 'q' pressed, exits */
2957         if (stdin_interaction)
2958             if (check_keyboard_interaction(cur_time) < 0)
2959                 break;
2960
2961         /* check if there's any stream where output is still needed */
2962         if (!need_output()) {
2963             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
2964             break;
2965         }
2966
2967         ret = transcode_step();
2968         if (ret < 0) {
2969             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
2970                 continue;
2971
2972             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
2973             break;
2974         }
2975
2976         /* dump report by using the output first video and audio streams */
2977         print_report(0, timer_start, cur_time);
2978     }
2979 #if HAVE_PTHREADS
2980     free_input_threads();
2981 #endif
2982
2983     /* at the end of stream, we must flush the decoder buffers */
2984     for (i = 0; i < nb_input_streams; i++) {
2985         ist = input_streams[i];
2986         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
2987             output_packet(ist, NULL);
2988         }
2989     }
2990     flush_encoders();
2991
2992     term_exit();
2993
2994     /* write the trailer if needed and close file */
2995     for (i = 0; i < nb_output_files; i++) {
2996         os = output_files[i]->ctx;
2997         av_write_trailer(os);
2998     }
2999
3000     /* dump report by using the first video and audio streams */
3001     print_report(1, timer_start, av_gettime());
3002
3003     /* close each encoder */
3004     for (i = 0; i < nb_output_streams; i++) {
3005         ost = output_streams[i];
3006         if (ost->encoding_needed) {
3007             av_freep(&ost->st->codec->stats_in);
3008             avcodec_close(ost->st->codec);
3009         }
3010     }
3011
3012     /* close each decoder */
3013     for (i = 0; i < nb_input_streams; i++) {
3014         ist = input_streams[i];
3015         if (ist->decoding_needed) {
3016             avcodec_close(ist->st->codec);
3017         }
3018     }
3019
3020     /* finished ! */
3021     ret = 0;
3022
3023  fail:
3024 #if HAVE_PTHREADS
3025     free_input_threads();
3026 #endif
3027
3028     if (output_streams) {
3029         for (i = 0; i < nb_output_streams; i++) {
3030             ost = output_streams[i];
3031             if (ost) {
3032                 if (ost->stream_copy)
3033                     av_freep(&ost->st->codec->extradata);
3034                 if (ost->logfile) {
3035                     fclose(ost->logfile);
3036                     ost->logfile = NULL;
3037                 }
3038                 av_freep(&ost->st->codec->subtitle_header);
3039                 av_free(ost->forced_kf_pts);
3040                 av_dict_free(&ost->opts);
3041             }
3042         }
3043     }
3044     return ret;
3045 }
3046
3047
3048 static int64_t getutime(void)
3049 {
3050 #if HAVE_GETRUSAGE
3051     struct rusage rusage;
3052
3053     getrusage(RUSAGE_SELF, &rusage);
3054     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3055 #elif HAVE_GETPROCESSTIMES
3056     HANDLE proc;
3057     FILETIME c, e, k, u;
3058     proc = GetCurrentProcess();
3059     GetProcessTimes(proc, &c, &e, &k, &u);
3060     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3061 #else
3062     return av_gettime();
3063 #endif
3064 }
3065
3066 static int64_t getmaxrss(void)
3067 {
3068 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3069     struct rusage rusage;
3070     getrusage(RUSAGE_SELF, &rusage);
3071     return (int64_t)rusage.ru_maxrss * 1024;
3072 #elif HAVE_GETPROCESSMEMORYINFO
3073     HANDLE proc;
3074     PROCESS_MEMORY_COUNTERS memcounters;
3075     proc = GetCurrentProcess();
3076     memcounters.cb = sizeof(memcounters);
3077     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3078     return memcounters.PeakPagefileUsage;
3079 #else
3080     return 0;
3081 #endif
3082 }
3083
3084 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3085 {
3086 }
3087
3088 static void parse_cpuflags(int argc, char **argv, const OptionDef *options)
3089 {
3090     int idx = locate_option(argc, argv, options, "cpuflags");
3091     if (idx && argv[idx + 1])
3092         opt_cpuflags(NULL, "cpuflags", argv[idx + 1]);
3093 }
3094
3095 int main(int argc, char **argv)
3096 {
3097     OptionsContext o = { 0 };
3098     int64_t ti;
3099
3100     atexit(exit_program);
3101
3102     reset_options(&o, 0);
3103
3104     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3105
3106     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3107     parse_loglevel(argc, argv, options);
3108
3109     if(argc>1 && !strcmp(argv[1], "-d")){
3110         run_as_daemon=1;
3111         av_log_set_callback(log_callback_null);
3112         argc--;
3113         argv++;
3114     }
3115
3116     avcodec_register_all();
3117 #if CONFIG_AVDEVICE
3118     avdevice_register_all();
3119 #endif
3120     avfilter_register_all();
3121     av_register_all();
3122     avformat_network_init();
3123
3124     show_banner(argc, argv, options);
3125
3126     term_init();
3127
3128     parse_cpuflags(argc, argv, options);
3129
3130     /* parse options */
3131     parse_options(&o, argc, argv, options, opt_output_file);
3132
3133     if (nb_output_files <= 0 && nb_input_files == 0) {
3134         show_usage();
3135         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3136         exit(1);
3137     }
3138
3139     /* file converter / grab */
3140     if (nb_output_files <= 0) {
3141         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3142         exit(1);
3143     }
3144
3145 //     if (nb_input_files == 0) {
3146 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3147 //         exit(1);
3148 //     }
3149
3150     current_time = ti = getutime();
3151     if (transcode() < 0)
3152         exit(1);
3153     ti = getutime() - ti;
3154     if (do_benchmark) {
3155         int maxrss = getmaxrss() / 1024;
3156         printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss);
3157     }
3158
3159     exit(0);
3160     return 0;
3161 }