ffmpeg: use PTS from the AVSubtitle structure.
[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/types.h>
73 #include <sys/resource.h>
74 #elif HAVE_GETPROCESSTIMES
75 #include <windows.h>
76 #endif
77 #if HAVE_GETPROCESSMEMORYINFO
78 #include <windows.h>
79 #include <psapi.h>
80 #endif
81
82 #if HAVE_SYS_SELECT_H
83 #include <sys/select.h>
84 #endif
85
86 #if HAVE_TERMIOS_H
87 #include <fcntl.h>
88 #include <sys/ioctl.h>
89 #include <sys/time.h>
90 #include <termios.h>
91 #elif HAVE_KBHIT
92 #include <conio.h>
93 #endif
94
95 #if HAVE_PTHREADS
96 #include <pthread.h>
97 #endif
98
99 #include <time.h>
100
101 #include "ffmpeg.h"
102 #include "cmdutils.h"
103
104 #include "libavutil/avassert.h"
105
106 const char program_name[] = "ffmpeg";
107 const int program_birth_year = 2000;
108
109 static FILE *vstats_file;
110
111 static void do_video_stats(AVFormatContext *os, OutputStream *ost, int frame_size);
112 static int64_t getutime(void);
113
114 static int run_as_daemon  = 0;
115 static int64_t video_size = 0;
116 static int64_t audio_size = 0;
117 static int64_t subtitle_size = 0;
118 static int64_t extra_size = 0;
119 static int nb_frames_dup = 0;
120 static int nb_frames_drop = 0;
121
122 static int current_time;
123 AVIOContext *progress_avio = NULL;
124
125 static uint8_t *subtitle_out;
126
127 #if HAVE_PTHREADS
128 /* signal to input threads that they should exit; set by the main thread */
129 static int transcoding_finished;
130 #endif
131
132 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
133
134 InputStream **input_streams = NULL;
135 int        nb_input_streams = 0;
136 InputFile   **input_files   = NULL;
137 int        nb_input_files   = 0;
138
139 OutputStream **output_streams = NULL;
140 int         nb_output_streams = 0;
141 OutputFile   **output_files   = NULL;
142 int         nb_output_files   = 0;
143
144 FilterGraph **filtergraphs;
145 int        nb_filtergraphs;
146
147 #if HAVE_TERMIOS_H
148
149 /* init terminal so that we can grab keys */
150 static struct termios oldtty;
151 static int restore_tty;
152 #endif
153
154
155 /* sub2video hack:
156    Convert subtitles to video with alpha to insert them in filter graphs.
157    This is a temporary solution until libavfilter gets real subtitles support.
158  */
159
160
161
162 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
163                                 AVSubtitleRect *r)
164 {
165     uint32_t *pal, *dst2;
166     uint8_t *src, *src2;
167     int x, y;
168
169     if (r->type != SUBTITLE_BITMAP) {
170         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
171         return;
172     }
173     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
174         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
175         return;
176     }
177
178     dst += r->y * dst_linesize + r->x * 4;
179     src = r->pict.data[0];
180     pal = (uint32_t *)r->pict.data[1];
181     for (y = 0; y < r->h; y++) {
182         dst2 = (uint32_t *)dst;
183         src2 = src;
184         for (x = 0; x < r->w; x++)
185             *(dst2++) = pal[*(src2++)];
186         dst += dst_linesize;
187         src += r->pict.linesize[0];
188     }
189 }
190
191 static void sub2video_push_ref(InputStream *ist, int64_t pts)
192 {
193     AVFilterBufferRef *ref = ist->sub2video.ref;
194     int i;
195
196     ist->sub2video.last_pts = ref->pts = pts;
197     for (i = 0; i < ist->nb_filters; i++)
198         av_buffersrc_add_ref(ist->filters[i]->filter,
199                              avfilter_ref_buffer(ref, ~0),
200                              AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
201                              AV_BUFFERSRC_FLAG_NO_COPY |
202                              AV_BUFFERSRC_FLAG_PUSH);
203 }
204
205 static void sub2video_update(InputStream *ist, AVSubtitle *sub, int64_t pts)
206 {
207     int w = ist->sub2video.w, h = ist->sub2video.h;
208     AVFilterBufferRef *ref = ist->sub2video.ref;
209     int8_t *dst;
210     int     dst_linesize;
211     int i;
212
213     if (!ref)
214         return;
215     dst          = ref->data    [0];
216     dst_linesize = ref->linesize[0];
217     memset(dst, 0, h * dst_linesize);
218     for (i = 0; i < sub->num_rects; i++)
219         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
220     sub2video_push_ref(ist, pts);
221 }
222
223 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
224 {
225     InputFile *infile = input_files[ist->file_index];
226     int i, j, nb_reqs;
227     int64_t pts2;
228
229     /* When a frame is read from a file, examine all sub2video streams in
230        the same file and send the sub2video frame again. Otherwise, decoded
231        video frames could be accumulating in the filter graph while a filter
232        (possibly overlay) is desperately waiting for a subtitle frame. */
233     for (i = 0; i < infile->nb_streams; i++) {
234         InputStream *ist2 = input_streams[infile->ist_index + i];
235         if (!ist2->sub2video.ref)
236             continue;
237         /* subtitles seem to be usually muxed ahead of other streams;
238            if not, substracting a larger time here is necessary */
239         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
240         /* do not send the heartbeat frame if the subtitle is already ahead */
241         if (pts2 <= ist2->sub2video.last_pts)
242             continue;
243         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
244             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
245         if (nb_reqs)
246             sub2video_push_ref(ist2, pts2);
247     }
248 }
249
250 static void sub2video_flush(InputStream *ist)
251 {
252     int i;
253
254     for (i = 0; i < ist->nb_filters; i++)
255         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
256 }
257
258 /* end of sub2video hack */
259
260 void term_exit(void)
261 {
262     av_log(NULL, AV_LOG_QUIET, "%s", "");
263 #if HAVE_TERMIOS_H
264     if(restore_tty)
265         tcsetattr (0, TCSANOW, &oldtty);
266 #endif
267 }
268
269 static volatile int received_sigterm = 0;
270 static volatile int received_nb_signals = 0;
271
272 static void
273 sigterm_handler(int sig)
274 {
275     received_sigterm = sig;
276     received_nb_signals++;
277     term_exit();
278     if(received_nb_signals > 3)
279         exit(123);
280 }
281
282 void term_init(void)
283 {
284 #if HAVE_TERMIOS_H
285     if(!run_as_daemon){
286         struct termios tty;
287         int istty = 1;
288 #if HAVE_ISATTY
289         istty = isatty(0) && isatty(2);
290 #endif
291         if (istty && tcgetattr (0, &tty) == 0) {
292             oldtty = tty;
293             restore_tty = 1;
294             atexit(term_exit);
295
296             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
297                              |INLCR|IGNCR|ICRNL|IXON);
298             tty.c_oflag |= OPOST;
299             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
300             tty.c_cflag &= ~(CSIZE|PARENB);
301             tty.c_cflag |= CS8;
302             tty.c_cc[VMIN] = 1;
303             tty.c_cc[VTIME] = 0;
304
305             tcsetattr (0, TCSANOW, &tty);
306         }
307         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
308     }
309 #endif
310     avformat_network_deinit();
311
312     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
313     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
314 #ifdef SIGXCPU
315     signal(SIGXCPU, sigterm_handler);
316 #endif
317 }
318
319 /* read a key without blocking */
320 static int read_key(void)
321 {
322     unsigned char ch;
323 #if HAVE_TERMIOS_H
324     int n = 1;
325     struct timeval tv;
326     fd_set rfds;
327
328     FD_ZERO(&rfds);
329     FD_SET(0, &rfds);
330     tv.tv_sec = 0;
331     tv.tv_usec = 0;
332     n = select(1, &rfds, NULL, NULL, &tv);
333     if (n > 0) {
334         n = read(0, &ch, 1);
335         if (n == 1)
336             return ch;
337
338         return n;
339     }
340 #elif HAVE_KBHIT
341 #    if HAVE_PEEKNAMEDPIPE
342     static int is_pipe;
343     static HANDLE input_handle;
344     DWORD dw, nchars;
345     if(!input_handle){
346         input_handle = GetStdHandle(STD_INPUT_HANDLE);
347         is_pipe = !GetConsoleMode(input_handle, &dw);
348     }
349
350     if (stdin->_cnt > 0) {
351         read(0, &ch, 1);
352         return ch;
353     }
354     if (is_pipe) {
355         /* When running under a GUI, you will end here. */
356         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
357             return -1;
358         //Read it
359         if(nchars != 0) {
360             read(0, &ch, 1);
361             return ch;
362         }else{
363             return -1;
364         }
365     }
366 #    endif
367     if(kbhit())
368         return(getch());
369 #endif
370     return -1;
371 }
372
373 static int decode_interrupt_cb(void *ctx)
374 {
375     return received_nb_signals > 1;
376 }
377
378 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
379
380 void av_noreturn exit_program(int ret)
381 {
382     int i, j;
383
384     for (i = 0; i < nb_filtergraphs; i++) {
385         avfilter_graph_free(&filtergraphs[i]->graph);
386         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
387             av_freep(&filtergraphs[i]->inputs[j]->name);
388             av_freep(&filtergraphs[i]->inputs[j]);
389         }
390         av_freep(&filtergraphs[i]->inputs);
391         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
392             av_freep(&filtergraphs[i]->outputs[j]->name);
393             av_freep(&filtergraphs[i]->outputs[j]);
394         }
395         av_freep(&filtergraphs[i]->outputs);
396         av_freep(&filtergraphs[i]);
397     }
398     av_freep(&filtergraphs);
399
400     av_freep(&subtitle_out);
401
402     /* close files */
403     for (i = 0; i < nb_output_files; i++) {
404         AVFormatContext *s = output_files[i]->ctx;
405         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
406             avio_close(s->pb);
407         avformat_free_context(s);
408         av_dict_free(&output_files[i]->opts);
409         av_freep(&output_files[i]);
410     }
411     for (i = 0; i < nb_output_streams; i++) {
412         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
413         while (bsfc) {
414             AVBitStreamFilterContext *next = bsfc->next;
415             av_bitstream_filter_close(bsfc);
416             bsfc = next;
417         }
418         output_streams[i]->bitstream_filters = NULL;
419
420         av_freep(&output_streams[i]->forced_keyframes);
421         av_freep(&output_streams[i]->avfilter);
422         av_freep(&output_streams[i]->logfile_prefix);
423         av_freep(&output_streams[i]->filtered_frame);
424         av_freep(&output_streams[i]);
425     }
426     for (i = 0; i < nb_input_files; i++) {
427         avformat_close_input(&input_files[i]->ctx);
428         av_freep(&input_files[i]);
429     }
430     for (i = 0; i < nb_input_streams; i++) {
431         av_freep(&input_streams[i]->decoded_frame);
432         av_dict_free(&input_streams[i]->opts);
433         free_buffer_pool(&input_streams[i]->buffer_pool);
434         avfilter_unref_bufferp(&input_streams[i]->sub2video.ref);
435         av_freep(&input_streams[i]->filters);
436         av_freep(&input_streams[i]);
437     }
438
439     if (vstats_file)
440         fclose(vstats_file);
441     av_free(vstats_filename);
442
443     av_freep(&input_streams);
444     av_freep(&input_files);
445     av_freep(&output_streams);
446     av_freep(&output_files);
447
448     uninit_opts();
449
450     avfilter_uninit();
451     avformat_network_deinit();
452
453     if (received_sigterm) {
454         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
455                (int) received_sigterm);
456         exit (255);
457     }
458
459     exit(ret);
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_program(1);
468     }
469 }
470
471 static void assert_codec_experimental(AVCodecContext *c, int encoder)
472 {
473     const char *codec_string = encoder ? "encoder" : "decoder";
474     AVCodec *codec;
475     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
476         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
477         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
478                 "results.\nAdd '-strict experimental' if you want to use it.\n",
479                 codec_string, c->codec->name);
480         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
481         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
482             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
483                    codec_string, codec->name);
484         exit_program(1);
485     }
486 }
487
488 static void update_benchmark(const char *fmt, ...)
489 {
490     if (do_benchmark_all) {
491         int64_t t = getutime();
492         va_list va;
493         char buf[1024];
494
495         if (fmt) {
496             va_start(va, fmt);
497             vsnprintf(buf, sizeof(buf), fmt, va);
498             va_end(va);
499             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
500         }
501         current_time = t;
502     }
503 }
504
505 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
506 {
507     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
508     AVCodecContext          *avctx = ost->st->codec;
509     int ret;
510
511     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
512         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
513         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
514
515     if ((avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) && pkt->dts != AV_NOPTS_VALUE) {
516         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
517         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
518             av_log(s, max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG,
519                    "st:%d PTS: %"PRId64" DTS: %"PRId64" < %"PRId64" invalid, clipping\n", pkt->stream_index, pkt->pts, pkt->dts, max);
520             if(pkt->pts >= pkt->dts)
521                 pkt->pts = FFMAX(pkt->pts, max);
522             pkt->dts = max;
523         }
524     }
525
526     /*
527      * Audio encoders may split the packets --  #frames in != #packets out.
528      * But there is no reordering, so we can limit the number of output packets
529      * by simply dropping them here.
530      * Counting encoded video frames needs to be done separately because of
531      * reordering, see do_video_out()
532      */
533     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
534         if (ost->frame_number >= ost->max_frames) {
535             av_free_packet(pkt);
536             return;
537         }
538         ost->frame_number++;
539     }
540
541     while (bsfc) {
542         AVPacket new_pkt = *pkt;
543         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
544                                            &new_pkt.data, &new_pkt.size,
545                                            pkt->data, pkt->size,
546                                            pkt->flags & AV_PKT_FLAG_KEY);
547         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
548             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
549             if(t) {
550                 memcpy(t, new_pkt.data, new_pkt.size);
551                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
552                 new_pkt.data = t;
553                 a = 1;
554             } else
555                 a = AVERROR(ENOMEM);
556         }
557         if (a > 0) {
558             av_free_packet(pkt);
559             new_pkt.destruct = av_destruct_packet;
560         } else if (a < 0) {
561             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
562                    bsfc->filter->name, pkt->stream_index,
563                    avctx->codec ? avctx->codec->name : "copy");
564             print_error("", a);
565             if (exit_on_error)
566                 exit_program(1);
567         }
568         *pkt = new_pkt;
569
570         bsfc = bsfc->next;
571     }
572
573     pkt->stream_index = ost->index;
574     ret = av_interleaved_write_frame(s, pkt);
575     if (ret < 0) {
576         print_error("av_interleaved_write_frame()", ret);
577         exit_program(1);
578     }
579 }
580
581 static void close_output_stream(OutputStream *ost)
582 {
583     OutputFile *of = output_files[ost->file_index];
584
585     ost->finished = 1;
586     if (of->shortest) {
587         int i;
588         for (i = 0; i < of->ctx->nb_streams; i++)
589             output_streams[of->ost_index + i]->finished = 1;
590     }
591 }
592
593 static int check_recording_time(OutputStream *ost)
594 {
595     OutputFile *of = output_files[ost->file_index];
596
597     if (of->recording_time != INT64_MAX &&
598         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
599                       AV_TIME_BASE_Q) >= 0) {
600         close_output_stream(ost);
601         return 0;
602     }
603     return 1;
604 }
605
606 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
607                          AVFrame *frame)
608 {
609     AVCodecContext *enc = ost->st->codec;
610     AVPacket pkt;
611     int got_packet = 0;
612
613     av_init_packet(&pkt);
614     pkt.data = NULL;
615     pkt.size = 0;
616
617     if (!check_recording_time(ost))
618         return;
619
620     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
621         frame->pts = ost->sync_opts;
622     ost->sync_opts = frame->pts + frame->nb_samples;
623
624     av_assert0(pkt.size || !pkt.data);
625     update_benchmark(NULL);
626     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
627         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
628         exit_program(1);
629     }
630     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
631
632     if (got_packet) {
633         if (pkt.pts != AV_NOPTS_VALUE)
634             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
635         if (pkt.dts != AV_NOPTS_VALUE)
636             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
637         if (pkt.duration > 0)
638             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
639
640         if (debug_ts) {
641             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
642                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
643                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
644                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
645         }
646
647         audio_size += pkt.size;
648         write_frame(s, &pkt, ost);
649
650         av_free_packet(&pkt);
651     }
652 }
653
654 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
655 {
656     AVCodecContext *dec;
657     AVPicture *picture2;
658     AVPicture picture_tmp;
659     uint8_t *buf = 0;
660
661     dec = ist->st->codec;
662
663     /* deinterlace : must be done before any resize */
664     if (do_deinterlace) {
665         int size;
666
667         /* create temporary picture */
668         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
669         buf  = av_malloc(size);
670         if (!buf)
671             return;
672
673         picture2 = &picture_tmp;
674         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
675
676         if (avpicture_deinterlace(picture2, picture,
677                                  dec->pix_fmt, dec->width, dec->height) < 0) {
678             /* if error, do not deinterlace */
679             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
680             av_free(buf);
681             buf = NULL;
682             picture2 = picture;
683         }
684     } else {
685         picture2 = picture;
686     }
687
688     if (picture != picture2)
689         *picture = *picture2;
690     *bufp = buf;
691 }
692
693 static void do_subtitle_out(AVFormatContext *s,
694                             OutputStream *ost,
695                             InputStream *ist,
696                             AVSubtitle *sub)
697 {
698     int subtitle_out_max_size = 1024 * 1024;
699     int subtitle_out_size, nb, i;
700     AVCodecContext *enc;
701     AVPacket pkt;
702     int64_t pts;
703
704     if (sub->pts == AV_NOPTS_VALUE) {
705         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
706         if (exit_on_error)
707             exit_program(1);
708         return;
709     }
710
711     enc = ost->st->codec;
712
713     if (!subtitle_out) {
714         subtitle_out = av_malloc(subtitle_out_max_size);
715     }
716
717     /* Note: DVB subtitle need one packet to draw them and one other
718        packet to clear them */
719     /* XXX: signal it in the codec context ? */
720     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
721         nb = 2;
722     else
723         nb = 1;
724
725     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
726     pts = sub->pts - output_files[ost->file_index]->start_time;
727     for (i = 0; i < nb; i++) {
728         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
729         if (!check_recording_time(ost))
730             return;
731
732         sub->pts = pts;
733         // start_display_time is required to be 0
734         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
735         sub->end_display_time  -= sub->start_display_time;
736         sub->start_display_time = 0;
737         if (i == 1)
738             sub->num_rects = 0;
739         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
740                                                     subtitle_out_max_size, sub);
741         if (subtitle_out_size < 0) {
742             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
743             exit_program(1);
744         }
745
746         av_init_packet(&pkt);
747         pkt.data = subtitle_out;
748         pkt.size = subtitle_out_size;
749         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
750         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
751         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
752             /* XXX: the pts correction is handled here. Maybe handling
753                it in the codec would be better */
754             if (i == 0)
755                 pkt.pts += 90 * sub->start_display_time;
756             else
757                 pkt.pts += 90 * sub->end_display_time;
758         }
759         subtitle_size += pkt.size;
760         write_frame(s, &pkt, ost);
761     }
762 }
763
764 static void do_video_out(AVFormatContext *s,
765                          OutputStream *ost,
766                          AVFrame *in_picture,
767                          float quality)
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, skiping\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         /* handles same_quant here. This is not correct because it may
872            not be a global option */
873         big_picture.quality = quality;
874         if (!enc->me_threshold)
875             big_picture.pict_type = 0;
876         if (ost->forced_kf_index < ost->forced_kf_count &&
877             big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
878             big_picture.pict_type = AV_PICTURE_TYPE_I;
879             ost->forced_kf_index++;
880         }
881         update_benchmark(NULL);
882         ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
883         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
884         if (ret < 0) {
885             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
886             exit_program(1);
887         }
888
889         if (got_packet) {
890             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
891                 pkt.pts = ost->sync_opts;
892
893             if (pkt.pts != AV_NOPTS_VALUE)
894                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
895             if (pkt.dts != AV_NOPTS_VALUE)
896                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
897
898             if (debug_ts) {
899                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
900                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
901                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
902                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
903             }
904
905             frame_size = pkt.size;
906             video_size += pkt.size;
907             write_frame(s, &pkt, ost);
908             av_free_packet(&pkt);
909
910             /* if two pass, output log */
911             if (ost->logfile && enc->stats_out) {
912                 fprintf(ost->logfile, "%s", enc->stats_out);
913             }
914         }
915     }
916     ost->sync_opts++;
917     /*
918      * For video, number of frames in == number of packets out.
919      * But there may be reordering, so we can't throw away frames on encoder
920      * flush, we need to limit them here, before they go into encoder.
921      */
922     ost->frame_number++;
923   }
924
925     if (vstats_filename && frame_size)
926         do_video_stats(output_files[ost->file_index]->ctx, ost, frame_size);
927 }
928
929 static double psnr(double d)
930 {
931     return -10.0 * log(d) / log(10.0);
932 }
933
934 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
935                            int frame_size)
936 {
937     AVCodecContext *enc;
938     int frame_number;
939     double ti1, bitrate, avg_bitrate;
940
941     /* this is executed just the first time do_video_stats is called */
942     if (!vstats_file) {
943         vstats_file = fopen(vstats_filename, "w");
944         if (!vstats_file) {
945             perror("fopen");
946             exit_program(1);
947         }
948     }
949
950     enc = ost->st->codec;
951     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
952         frame_number = ost->frame_number;
953         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
954         if (enc->flags&CODEC_FLAG_PSNR)
955             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
956
957         fprintf(vstats_file,"f_size= %6d ", frame_size);
958         /* compute pts value */
959         ti1 = ost->sync_opts * av_q2d(enc->time_base);
960         if (ti1 < 0.01)
961             ti1 = 0.01;
962
963         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
964         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
965         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
966                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
967         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
968     }
969 }
970
971 /**
972  * Get and encode new output from any of the filtergraphs, without causing
973  * activity.
974  *
975  * @return  0 for success, <0 for severe errors
976  */
977 static int reap_filters(void)
978 {
979     AVFilterBufferRef *picref;
980     AVFrame *filtered_frame = NULL;
981     int i;
982     int64_t frame_pts;
983
984     /* Reap all buffers present in the buffer sinks */
985     for (i = 0; i < nb_output_streams; i++) {
986         OutputStream *ost = output_streams[i];
987         OutputFile    *of = output_files[ost->file_index];
988         int ret = 0;
989
990         if (!ost->filter)
991             continue;
992
993         if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
994             return AVERROR(ENOMEM);
995         } else
996             avcodec_get_frame_defaults(ost->filtered_frame);
997         filtered_frame = ost->filtered_frame;
998
999         while (1) {
1000             ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
1001                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1002             if (ret < 0) {
1003                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1004                     char buf[256];
1005                     av_strerror(ret, buf, sizeof(buf));
1006                     av_log(NULL, AV_LOG_WARNING,
1007                            "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
1008                 }
1009                 break;
1010             }
1011             frame_pts = AV_NOPTS_VALUE;
1012             if (picref->pts != AV_NOPTS_VALUE) {
1013                 filtered_frame->pts = frame_pts = av_rescale_q(picref->pts,
1014                                                 ost->filter->filter->inputs[0]->time_base,
1015                                                 ost->st->codec->time_base) -
1016                                     av_rescale_q(of->start_time,
1017                                                 AV_TIME_BASE_Q,
1018                                                 ost->st->codec->time_base);
1019
1020                 if (of->start_time && filtered_frame->pts < 0) {
1021                     avfilter_unref_buffer(picref);
1022                     continue;
1023                 }
1024             }
1025             //if (ost->source_index >= 0)
1026             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1027
1028
1029             switch (ost->filter->filter->inputs[0]->type) {
1030             case AVMEDIA_TYPE_VIDEO:
1031                 avfilter_copy_buf_props(filtered_frame, picref);
1032                 filtered_frame->pts = frame_pts;
1033                 if (!ost->frame_aspect_ratio)
1034                     ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
1035
1036                 do_video_out(of->ctx, ost, filtered_frame,
1037                              same_quant ? ost->last_quality :
1038                                           ost->st->codec->global_quality);
1039                 break;
1040             case AVMEDIA_TYPE_AUDIO:
1041                 avfilter_copy_buf_props(filtered_frame, picref);
1042                 filtered_frame->pts = frame_pts;
1043                 do_audio_out(of->ctx, ost, filtered_frame);
1044                 break;
1045             default:
1046                 // TODO support subtitle filters
1047                 av_assert0(0);
1048             }
1049
1050             avfilter_unref_buffer(picref);
1051         }
1052     }
1053
1054     return 0;
1055 }
1056
1057 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1058 {
1059     char buf[1024];
1060     AVBPrint buf_script;
1061     OutputStream *ost;
1062     AVFormatContext *oc;
1063     int64_t total_size;
1064     AVCodecContext *enc;
1065     int frame_number, vid, i;
1066     double bitrate;
1067     int64_t pts = INT64_MIN;
1068     static int64_t last_time = -1;
1069     static int qp_histogram[52];
1070     int hours, mins, secs, us;
1071
1072     if (!print_stats && !is_last_report && !progress_avio)
1073         return;
1074
1075     if (!is_last_report) {
1076         if (last_time == -1) {
1077             last_time = cur_time;
1078             return;
1079         }
1080         if ((cur_time - last_time) < 500000)
1081             return;
1082         last_time = cur_time;
1083     }
1084
1085
1086     oc = output_files[0]->ctx;
1087
1088     total_size = avio_size(oc->pb);
1089     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
1090         total_size = avio_tell(oc->pb);
1091         if (total_size < 0)
1092             total_size = 0;
1093     }
1094
1095     buf[0] = '\0';
1096     vid = 0;
1097     av_bprint_init(&buf_script, 0, 1);
1098     for (i = 0; i < nb_output_streams; i++) {
1099         float q = -1;
1100         ost = output_streams[i];
1101         enc = ost->st->codec;
1102         if (!ost->stream_copy && enc->coded_frame)
1103             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1104         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1105             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1106             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1107                        ost->file_index, ost->index, q);
1108         }
1109         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1110             float fps, t = (cur_time-timer_start) / 1000000.0;
1111
1112             frame_number = ost->frame_number;
1113             fps = t > 1 ? frame_number / t : 0;
1114             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1115                      frame_number, fps < 9.95, fps, q);
1116             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1117             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1118             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1119                        ost->file_index, ost->index, q);
1120             if (is_last_report)
1121                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1122             if (qp_hist) {
1123                 int j;
1124                 int qp = lrintf(q);
1125                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1126                     qp_histogram[qp]++;
1127                 for (j = 0; j < 32; j++)
1128                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1129             }
1130             if (enc->flags&CODEC_FLAG_PSNR) {
1131                 int j;
1132                 double error, error_sum = 0;
1133                 double scale, scale_sum = 0;
1134                 double p;
1135                 char type[3] = { 'Y','U','V' };
1136                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1137                 for (j = 0; j < 3; j++) {
1138                     if (is_last_report) {
1139                         error = enc->error[j];
1140                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1141                     } else {
1142                         error = enc->coded_frame->error[j];
1143                         scale = enc->width * enc->height * 255.0 * 255.0;
1144                     }
1145                     if (j)
1146                         scale /= 4;
1147                     error_sum += error;
1148                     scale_sum += scale;
1149                     p = psnr(error / scale);
1150                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1151                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1152                                ost->file_index, ost->index, type[i] | 32, p);
1153                 }
1154                 p = psnr(error_sum / scale_sum);
1155                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1156                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1157                            ost->file_index, ost->index, p);
1158             }
1159             vid = 1;
1160         }
1161         /* compute min output value */
1162         if ((is_last_report || !ost->finished) && ost->st->pts.val != AV_NOPTS_VALUE)
1163             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1164                                           ost->st->time_base, AV_TIME_BASE_Q));
1165     }
1166
1167     secs = pts / AV_TIME_BASE;
1168     us = pts % AV_TIME_BASE;
1169     mins = secs / 60;
1170     secs %= 60;
1171     hours = mins / 60;
1172     mins %= 60;
1173
1174     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1175
1176     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1177              "size=%8.0fkB time=", total_size / 1024.0);
1178     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1179              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1180              (100 * us) / AV_TIME_BASE);
1181     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1182              "bitrate=%6.1fkbits/s", bitrate);
1183     av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1184     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1185     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1186                hours, mins, secs, us);
1187
1188     if (nb_frames_dup || nb_frames_drop)
1189         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1190                 nb_frames_dup, nb_frames_drop);
1191     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1192     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1193
1194     if (print_stats || is_last_report) {
1195     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1196
1197     fflush(stderr);
1198     }
1199
1200     if (progress_avio) {
1201         av_bprintf(&buf_script, "progress=%s\n",
1202                    is_last_report ? "end" : "continue");
1203         avio_write(progress_avio, buf_script.str,
1204                    FFMIN(buf_script.len, buf_script.size - 1));
1205         avio_flush(progress_avio);
1206         av_bprint_finalize(&buf_script, NULL);
1207         if (is_last_report) {
1208             avio_close(progress_avio);
1209             progress_avio = NULL;
1210         }
1211     }
1212
1213     if (is_last_report) {
1214         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1215         av_log(NULL, AV_LOG_INFO, "\n");
1216         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1217                video_size / 1024.0,
1218                audio_size / 1024.0,
1219                subtitle_size / 1024.0,
1220                extra_size / 1024.0,
1221                100.0 * (total_size - raw) / raw
1222         );
1223         if(video_size + audio_size + subtitle_size + extra_size == 0){
1224             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1225         }
1226     }
1227 }
1228
1229 static void flush_encoders(void)
1230 {
1231     int i, ret;
1232
1233     for (i = 0; i < nb_output_streams; i++) {
1234         OutputStream   *ost = output_streams[i];
1235         AVCodecContext *enc = ost->st->codec;
1236         AVFormatContext *os = output_files[ost->file_index]->ctx;
1237         int stop_encoding = 0;
1238
1239         if (!ost->encoding_needed)
1240             continue;
1241
1242         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1243             continue;
1244         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1245             continue;
1246
1247         for (;;) {
1248             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1249             const char *desc;
1250             int64_t *size;
1251
1252             switch (ost->st->codec->codec_type) {
1253             case AVMEDIA_TYPE_AUDIO:
1254                 encode = avcodec_encode_audio2;
1255                 desc   = "Audio";
1256                 size   = &audio_size;
1257                 break;
1258             case AVMEDIA_TYPE_VIDEO:
1259                 encode = avcodec_encode_video2;
1260                 desc   = "Video";
1261                 size   = &video_size;
1262                 break;
1263             default:
1264                 stop_encoding = 1;
1265             }
1266
1267             if (encode) {
1268                 AVPacket pkt;
1269                 int got_packet;
1270                 av_init_packet(&pkt);
1271                 pkt.data = NULL;
1272                 pkt.size = 0;
1273
1274                 update_benchmark(NULL);
1275                 ret = encode(enc, &pkt, NULL, &got_packet);
1276                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1277                 if (ret < 0) {
1278                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1279                     exit_program(1);
1280                 }
1281                 *size += pkt.size;
1282                 if (ost->logfile && enc->stats_out) {
1283                     fprintf(ost->logfile, "%s", enc->stats_out);
1284                 }
1285                 if (!got_packet) {
1286                     stop_encoding = 1;
1287                     break;
1288                 }
1289                 if (pkt.pts != AV_NOPTS_VALUE)
1290                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1291                 if (pkt.dts != AV_NOPTS_VALUE)
1292                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1293                 write_frame(os, &pkt, ost);
1294             }
1295
1296             if (stop_encoding)
1297                 break;
1298         }
1299     }
1300 }
1301
1302 /*
1303  * Check whether a packet from ist should be written into ost at this time
1304  */
1305 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1306 {
1307     OutputFile *of = output_files[ost->file_index];
1308     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1309
1310     if (ost->source_index != ist_index)
1311         return 0;
1312
1313     if (of->start_time && ist->pts < of->start_time)
1314         return 0;
1315
1316     return 1;
1317 }
1318
1319 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1320 {
1321     OutputFile *of = output_files[ost->file_index];
1322     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1323     AVPicture pict;
1324     AVPacket opkt;
1325
1326     av_init_packet(&opkt);
1327
1328     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1329         !ost->copy_initial_nonkeyframes)
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_program(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_program(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     float quality;
1546
1547     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1548         return AVERROR(ENOMEM);
1549     else
1550         avcodec_get_frame_defaults(ist->decoded_frame);
1551     decoded_frame = ist->decoded_frame;
1552     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1553
1554     update_benchmark(NULL);
1555     ret = avcodec_decode_video2(ist->st->codec,
1556                                 decoded_frame, got_output, pkt);
1557     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1558     if (!*got_output || ret < 0) {
1559         if (!pkt->size) {
1560             for (i = 0; i < ist->nb_filters; i++)
1561                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1562         }
1563         return ret;
1564     }
1565
1566     quality = same_quant ? decoded_frame->quality : 0;
1567
1568     if(ist->top_field_first>=0)
1569         decoded_frame->top_field_first = ist->top_field_first;
1570
1571     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1572     if(best_effort_timestamp != AV_NOPTS_VALUE)
1573         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1574
1575     if (debug_ts) {
1576         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1577                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1578                 ist->st->index, av_ts2str(decoded_frame->pts),
1579                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1580                 best_effort_timestamp,
1581                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1582                 decoded_frame->key_frame, decoded_frame->pict_type);
1583     }
1584
1585     pkt->size = 0;
1586     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1587
1588     rate_emu_sleep(ist);
1589
1590     if (ist->st->sample_aspect_ratio.num)
1591         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1592
1593     resample_changed = ist->resample_width   != decoded_frame->width  ||
1594                        ist->resample_height  != decoded_frame->height ||
1595                        ist->resample_pix_fmt != decoded_frame->format;
1596     if (resample_changed) {
1597         av_log(NULL, AV_LOG_INFO,
1598                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1599                ist->file_index, ist->st->index,
1600                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1601                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1602
1603         ist->resample_width   = decoded_frame->width;
1604         ist->resample_height  = decoded_frame->height;
1605         ist->resample_pix_fmt = decoded_frame->format;
1606
1607         for (i = 0; i < nb_filtergraphs; i++)
1608             if (ist_in_filtergraph(filtergraphs[i], ist) &&
1609                 configure_filtergraph(filtergraphs[i]) < 0) {
1610                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1611                 exit_program(1);
1612             }
1613     }
1614
1615     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1616     for (i = 0; i < ist->nb_filters; i++) {
1617         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
1618                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
1619                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
1620         // XXX what an ugly hack
1621         if (ist->filters[i]->graph->nb_outputs == 1)
1622             ist->filters[i]->graph->outputs[0]->ost->last_quality = quality;
1623
1624         if (!frame_sample_aspect->num)
1625             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1626         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
1627             FrameBuffer      *buf = decoded_frame->opaque;
1628             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1629                                         decoded_frame->data, decoded_frame->linesize,
1630                                         AV_PERM_READ | AV_PERM_PRESERVE,
1631                                         ist->st->codec->width, ist->st->codec->height,
1632                                         ist->st->codec->pix_fmt);
1633
1634             avfilter_copy_frame_props(fb, decoded_frame);
1635             fb->buf->priv           = buf;
1636             fb->buf->free           = filter_release_buffer;
1637
1638             av_assert0(buf->refcount>0);
1639             buf->refcount++;
1640             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
1641                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
1642                                  AV_BUFFERSRC_FLAG_NO_COPY |
1643                                  AV_BUFFERSRC_FLAG_PUSH);
1644         } else
1645         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, AV_BUFFERSRC_FLAG_PUSH)<0) {
1646             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
1647             exit_program(1);
1648         }
1649
1650     }
1651
1652     av_free(buffer_to_free);
1653     return ret;
1654 }
1655
1656 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1657 {
1658     AVSubtitle subtitle;
1659     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1660                                           &subtitle, got_output, pkt);
1661     if (ret < 0 || !*got_output) {
1662         if (!pkt->size)
1663             sub2video_flush(ist);
1664         return ret;
1665     }
1666
1667     if (ist->fix_sub_duration) {
1668         if (ist->prev_sub.got_output) {
1669             int end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1670                                  1000, AV_TIME_BASE);
1671             if (end < ist->prev_sub.subtitle.end_display_time) {
1672                 av_log(ist->st->codec, AV_LOG_DEBUG,
1673                        "Subtitle duration reduced from %d to %d\n",
1674                        ist->prev_sub.subtitle.end_display_time, end);
1675                 ist->prev_sub.subtitle.end_display_time = end;
1676             }
1677         }
1678         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1679         FFSWAP(int,        ret,         ist->prev_sub.ret);
1680         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1681     }
1682
1683     sub2video_update(ist, &subtitle, pkt->pts);
1684
1685     if (!*got_output || !subtitle.num_rects)
1686         return ret;
1687
1688     rate_emu_sleep(ist);
1689
1690     for (i = 0; i < nb_output_streams; i++) {
1691         OutputStream *ost = output_streams[i];
1692
1693         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1694             continue;
1695
1696         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
1697     }
1698
1699     avsubtitle_free(&subtitle);
1700     return ret;
1701 }
1702
1703 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1704 static int output_packet(InputStream *ist, const AVPacket *pkt)
1705 {
1706     int ret = 0, i;
1707     int got_output;
1708
1709     AVPacket avpkt;
1710     if (!ist->saw_first_ts) {
1711         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;
1712         ist->pts = 0;
1713         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1714             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1715             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1716         }
1717         ist->saw_first_ts = 1;
1718     }
1719
1720     if (ist->next_dts == AV_NOPTS_VALUE)
1721         ist->next_dts = ist->dts;
1722     if (ist->next_pts == AV_NOPTS_VALUE)
1723         ist->next_pts = ist->pts;
1724
1725     if (pkt == NULL) {
1726         /* EOF handling */
1727         av_init_packet(&avpkt);
1728         avpkt.data = NULL;
1729         avpkt.size = 0;
1730         goto handle_eof;
1731     } else {
1732         avpkt = *pkt;
1733     }
1734
1735     if (pkt->dts != AV_NOPTS_VALUE) {
1736         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1737         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1738             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1739     }
1740
1741     // while we have more to decode or while the decoder did output something on EOF
1742     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1743         int duration;
1744     handle_eof:
1745
1746         ist->pts = ist->next_pts;
1747         ist->dts = ist->next_dts;
1748
1749         if (avpkt.size && avpkt.size != pkt->size) {
1750             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1751                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1752             ist->showed_multi_packet_warning = 1;
1753         }
1754
1755         switch (ist->st->codec->codec_type) {
1756         case AVMEDIA_TYPE_AUDIO:
1757             ret = decode_audio    (ist, &avpkt, &got_output);
1758             break;
1759         case AVMEDIA_TYPE_VIDEO:
1760             ret = decode_video    (ist, &avpkt, &got_output);
1761             if (avpkt.duration) {
1762                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1763             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1764                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1765                 duration = ((int64_t)AV_TIME_BASE *
1766                                 ist->st->codec->time_base.num * ticks) /
1767                                 ist->st->codec->time_base.den;
1768             } else
1769                 duration = 0;
1770
1771             if(ist->dts != AV_NOPTS_VALUE && duration) {
1772                 ist->next_dts += duration;
1773             }else
1774                 ist->next_dts = AV_NOPTS_VALUE;
1775
1776             if (got_output)
1777                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1778             break;
1779         case AVMEDIA_TYPE_SUBTITLE:
1780             ret = transcode_subtitles(ist, &avpkt, &got_output);
1781             break;
1782         default:
1783             return -1;
1784         }
1785
1786         if (ret < 0)
1787             return ret;
1788
1789         avpkt.dts=
1790         avpkt.pts= AV_NOPTS_VALUE;
1791
1792         // touch data and size only if not EOF
1793         if (pkt) {
1794             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1795                 ret = avpkt.size;
1796             avpkt.data += ret;
1797             avpkt.size -= ret;
1798         }
1799         if (!got_output) {
1800             continue;
1801         }
1802     }
1803
1804     /* handle stream copy */
1805     if (!ist->decoding_needed) {
1806         rate_emu_sleep(ist);
1807         ist->dts = ist->next_dts;
1808         switch (ist->st->codec->codec_type) {
1809         case AVMEDIA_TYPE_AUDIO:
1810             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1811                              ist->st->codec->sample_rate;
1812             break;
1813         case AVMEDIA_TYPE_VIDEO:
1814             if (pkt->duration) {
1815                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1816             } else if(ist->st->codec->time_base.num != 0) {
1817                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1818                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1819                                   ist->st->codec->time_base.num * ticks) /
1820                                   ist->st->codec->time_base.den;
1821             }
1822             break;
1823         }
1824         ist->pts = ist->dts;
1825         ist->next_pts = ist->next_dts;
1826     }
1827     for (i = 0; pkt && i < nb_output_streams; i++) {
1828         OutputStream *ost = output_streams[i];
1829
1830         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1831             continue;
1832
1833         do_streamcopy(ist, ost, pkt);
1834     }
1835
1836     return 0;
1837 }
1838
1839 static void print_sdp(void)
1840 {
1841     char sdp[2048];
1842     int i;
1843     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1844
1845     if (!avc)
1846         exit_program(1);
1847     for (i = 0; i < nb_output_files; i++)
1848         avc[i] = output_files[i]->ctx;
1849
1850     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1851     printf("SDP:\n%s\n", sdp);
1852     fflush(stdout);
1853     av_freep(&avc);
1854 }
1855
1856 static int init_input_stream(int ist_index, char *error, int error_len)
1857 {
1858     InputStream *ist = input_streams[ist_index];
1859
1860     if (ist->decoding_needed) {
1861         AVCodec *codec = ist->dec;
1862         if (!codec) {
1863             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1864                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1865             return AVERROR(EINVAL);
1866         }
1867
1868         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
1869         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
1870             ist->st->codec->get_buffer     = codec_get_buffer;
1871             ist->st->codec->release_buffer = codec_release_buffer;
1872             ist->st->codec->opaque         = &ist->buffer_pool;
1873         }
1874
1875         if (!av_dict_get(ist->opts, "threads", NULL, 0))
1876             av_dict_set(&ist->opts, "threads", "auto", 0);
1877         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
1878             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1879                     ist->file_index, ist->st->index);
1880             return AVERROR(EINVAL);
1881         }
1882         assert_codec_experimental(ist->st->codec, 0);
1883         assert_avoptions(ist->opts);
1884     }
1885
1886     ist->next_pts = AV_NOPTS_VALUE;
1887     ist->next_dts = AV_NOPTS_VALUE;
1888     ist->is_start = 1;
1889
1890     return 0;
1891 }
1892
1893 static InputStream *get_input_stream(OutputStream *ost)
1894 {
1895     if (ost->source_index >= 0)
1896         return input_streams[ost->source_index];
1897     return NULL;
1898 }
1899
1900 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1901                                     AVCodecContext *avctx)
1902 {
1903     char *p;
1904     int n = 1, i;
1905     int64_t t;
1906
1907     for (p = kf; *p; p++)
1908         if (*p == ',')
1909             n++;
1910     ost->forced_kf_count = n;
1911     ost->forced_kf_pts   = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1912     if (!ost->forced_kf_pts) {
1913         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1914         exit_program(1);
1915     }
1916
1917     p = kf;
1918     for (i = 0; i < n; i++) {
1919         char *next = strchr(p, ',');
1920
1921         if (next)
1922             *next++ = 0;
1923
1924         t = parse_time_or_die("force_key_frames", p, 1);
1925         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1926
1927         p = next;
1928     }
1929 }
1930
1931 static void report_new_stream(int input_index, AVPacket *pkt)
1932 {
1933     InputFile *file = input_files[input_index];
1934     AVStream *st = file->ctx->streams[pkt->stream_index];
1935
1936     if (pkt->stream_index < file->nb_streams_warn)
1937         return;
1938     av_log(file->ctx, AV_LOG_WARNING,
1939            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
1940            av_get_media_type_string(st->codec->codec_type),
1941            input_index, pkt->stream_index,
1942            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
1943     file->nb_streams_warn = pkt->stream_index + 1;
1944 }
1945
1946 static int transcode_init(void)
1947 {
1948     int ret = 0, i, j, k;
1949     AVFormatContext *oc;
1950     AVCodecContext *codec;
1951     OutputStream *ost;
1952     InputStream *ist;
1953     char error[1024];
1954     int want_sdp = 1;
1955
1956     /* init framerate emulation */
1957     for (i = 0; i < nb_input_files; i++) {
1958         InputFile *ifile = input_files[i];
1959         if (ifile->rate_emu)
1960             for (j = 0; j < ifile->nb_streams; j++)
1961                 input_streams[j + ifile->ist_index]->start = av_gettime();
1962     }
1963
1964     /* output stream init */
1965     for (i = 0; i < nb_output_files; i++) {
1966         oc = output_files[i]->ctx;
1967         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
1968             av_dump_format(oc, i, oc->filename, 1);
1969             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
1970             return AVERROR(EINVAL);
1971         }
1972     }
1973
1974     /* init complex filtergraphs */
1975     for (i = 0; i < nb_filtergraphs; i++)
1976         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
1977             return ret;
1978
1979     /* for each output stream, we compute the right encoding parameters */
1980     for (i = 0; i < nb_output_streams; i++) {
1981         AVCodecContext *icodec = NULL;
1982         ost = output_streams[i];
1983         oc  = output_files[ost->file_index]->ctx;
1984         ist = get_input_stream(ost);
1985
1986         if (ost->attachment_filename)
1987             continue;
1988
1989         codec  = ost->st->codec;
1990
1991         if (ist) {
1992             icodec = ist->st->codec;
1993
1994             ost->st->disposition          = ist->st->disposition;
1995             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
1996             codec->chroma_sample_location = icodec->chroma_sample_location;
1997         }
1998
1999         if (ost->stream_copy) {
2000             uint64_t extra_size;
2001
2002             av_assert0(ist && !ost->filter);
2003
2004             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2005
2006             if (extra_size > INT_MAX) {
2007                 return AVERROR(EINVAL);
2008             }
2009
2010             /* if stream_copy is selected, no need to decode or encode */
2011             codec->codec_id   = icodec->codec_id;
2012             codec->codec_type = icodec->codec_type;
2013
2014             if (!codec->codec_tag) {
2015                 if (!oc->oformat->codec_tag ||
2016                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2017                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2018                     codec->codec_tag = icodec->codec_tag;
2019             }
2020
2021             codec->bit_rate       = icodec->bit_rate;
2022             codec->rc_max_rate    = icodec->rc_max_rate;
2023             codec->rc_buffer_size = icodec->rc_buffer_size;
2024             codec->field_order    = icodec->field_order;
2025             codec->extradata      = av_mallocz(extra_size);
2026             if (!codec->extradata) {
2027                 return AVERROR(ENOMEM);
2028             }
2029             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2030             codec->extradata_size= icodec->extradata_size;
2031             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2032
2033             codec->time_base = ist->st->time_base;
2034             /*
2035              * Avi is a special case here because it supports variable fps but
2036              * having the fps and timebase differe significantly adds quite some
2037              * overhead
2038              */
2039             if(!strcmp(oc->oformat->name, "avi")) {
2040                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2041                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2042                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2043                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2044                      || copy_tb==2){
2045                     codec->time_base.num = ist->st->r_frame_rate.den;
2046                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2047                     codec->ticks_per_frame = 2;
2048                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2049                                  && av_q2d(ist->st->time_base) < 1.0/500
2050                     || copy_tb==0){
2051                     codec->time_base = icodec->time_base;
2052                     codec->time_base.num *= icodec->ticks_per_frame;
2053                     codec->time_base.den *= 2;
2054                     codec->ticks_per_frame = 2;
2055                 }
2056             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2057                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2058                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2059             ) {
2060                 if(   copy_tb<0 && icodec->time_base.den
2061                                 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2062                                 && av_q2d(ist->st->time_base) < 1.0/500
2063                    || copy_tb==0){
2064                     codec->time_base = icodec->time_base;
2065                     codec->time_base.num *= icodec->ticks_per_frame;
2066                 }
2067             }
2068
2069             if(ost->frame_rate.num)
2070                 codec->time_base = av_inv_q(ost->frame_rate);
2071
2072             av_reduce(&codec->time_base.num, &codec->time_base.den,
2073                         codec->time_base.num, codec->time_base.den, INT_MAX);
2074
2075             switch (codec->codec_type) {
2076             case AVMEDIA_TYPE_AUDIO:
2077                 if (audio_volume != 256) {
2078                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2079                     exit_program(1);
2080                 }
2081                 codec->channel_layout     = icodec->channel_layout;
2082                 codec->sample_rate        = icodec->sample_rate;
2083                 codec->channels           = icodec->channels;
2084                 codec->frame_size         = icodec->frame_size;
2085                 codec->audio_service_type = icodec->audio_service_type;
2086                 codec->block_align        = icodec->block_align;
2087                 if((codec->block_align == 1 || codec->block_align == 1152) && codec->codec_id == AV_CODEC_ID_MP3)
2088                     codec->block_align= 0;
2089                 if(codec->codec_id == AV_CODEC_ID_AC3)
2090                     codec->block_align= 0;
2091                 break;
2092             case AVMEDIA_TYPE_VIDEO:
2093                 codec->pix_fmt            = icodec->pix_fmt;
2094                 codec->width              = icodec->width;
2095                 codec->height             = icodec->height;
2096                 codec->has_b_frames       = icodec->has_b_frames;
2097                 if (!codec->sample_aspect_ratio.num) {
2098                     codec->sample_aspect_ratio   =
2099                     ost->st->sample_aspect_ratio =
2100                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2101                         ist->st->codec->sample_aspect_ratio.num ?
2102                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2103                 }
2104                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2105                 break;
2106             case AVMEDIA_TYPE_SUBTITLE:
2107                 codec->width  = icodec->width;
2108                 codec->height = icodec->height;
2109                 break;
2110             case AVMEDIA_TYPE_DATA:
2111             case AVMEDIA_TYPE_ATTACHMENT:
2112                 break;
2113             default:
2114                 abort();
2115             }
2116         } else {
2117             if (!ost->enc)
2118                 ost->enc = avcodec_find_encoder(codec->codec_id);
2119             if (!ost->enc) {
2120                 /* should only happen when a default codec is not present. */
2121                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2122                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2123                 ret = AVERROR(EINVAL);
2124                 goto dump_format;
2125             }
2126
2127             if (ist)
2128                 ist->decoding_needed++;
2129             ost->encoding_needed = 1;
2130
2131             if (!ost->filter &&
2132                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2133                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2134                     FilterGraph *fg;
2135                     fg = init_simple_filtergraph(ist, ost);
2136                     if (configure_filtergraph(fg)) {
2137                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2138                         exit(1);
2139                     }
2140             }
2141
2142             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2143                 if (ost->filter && !ost->frame_rate.num)
2144                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2145                 if (ist && !ost->frame_rate.num)
2146                     ost->frame_rate = ist->framerate;
2147                 if (ist && !ost->frame_rate.num)
2148                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2149 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2150                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2151                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2152                     ost->frame_rate = ost->enc->supported_framerates[idx];
2153                 }
2154             }
2155
2156             switch (codec->codec_type) {
2157             case AVMEDIA_TYPE_AUDIO:
2158                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2159                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2160                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2161                 codec->channels       = av_get_channel_layout_nb_channels(codec->channel_layout);
2162                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2163                 break;
2164             case AVMEDIA_TYPE_VIDEO:
2165                 codec->time_base = av_inv_q(ost->frame_rate);
2166                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2167                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2168                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2169                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2170                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2171                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2172                 }
2173                 for (j = 0; j < ost->forced_kf_count; j++)
2174                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2175                                                          AV_TIME_BASE_Q,
2176                                                          codec->time_base);
2177
2178                 codec->width  = ost->filter->filter->inputs[0]->w;
2179                 codec->height = ost->filter->filter->inputs[0]->h;
2180                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2181                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
2182                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
2183                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2184                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2185
2186                 if (!icodec ||
2187                     codec->width   != icodec->width  ||
2188                     codec->height  != icodec->height ||
2189                     codec->pix_fmt != icodec->pix_fmt) {
2190                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2191                 }
2192
2193                 if (ost->forced_keyframes)
2194                     parse_forced_key_frames(ost->forced_keyframes, ost,
2195                                             ost->st->codec);
2196                 break;
2197             case AVMEDIA_TYPE_SUBTITLE:
2198                 codec->time_base = (AVRational){1, 1000};
2199                 if (!codec->width) {
2200                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2201                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2202                 }
2203                 break;
2204             default:
2205                 abort();
2206                 break;
2207             }
2208             /* two pass mode */
2209             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2210                 char logfilename[1024];
2211                 FILE *f;
2212
2213                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2214                          ost->logfile_prefix ? ost->logfile_prefix :
2215                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2216                          i);
2217                 if (!strcmp(ost->enc->name, "libx264")) {
2218                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2219                 } else {
2220                     if (codec->flags & CODEC_FLAG_PASS2) {
2221                         char  *logbuffer;
2222                         size_t logbuffer_size;
2223                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2224                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2225                                    logfilename);
2226                             exit_program(1);
2227                         }
2228                         codec->stats_in = logbuffer;
2229                     }
2230                     if (codec->flags & CODEC_FLAG_PASS1) {
2231                         f = fopen(logfilename, "wb");
2232                         if (!f) {
2233                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2234                                 logfilename, strerror(errno));
2235                             exit_program(1);
2236                         }
2237                         ost->logfile = f;
2238                     }
2239                 }
2240             }
2241         }
2242     }
2243
2244     /* open each encoder */
2245     for (i = 0; i < nb_output_streams; i++) {
2246         ost = output_streams[i];
2247         if (ost->encoding_needed) {
2248             AVCodec      *codec = ost->enc;
2249             AVCodecContext *dec = NULL;
2250
2251             if ((ist = get_input_stream(ost)))
2252                 dec = ist->st->codec;
2253             if (dec && dec->subtitle_header) {
2254                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2255                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2256                 if (!ost->st->codec->subtitle_header) {
2257                     ret = AVERROR(ENOMEM);
2258                     goto dump_format;
2259                 }
2260                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2261                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2262             }
2263             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2264                 av_dict_set(&ost->opts, "threads", "auto", 0);
2265             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
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                 ret = AVERROR(EINVAL);
2269                 goto dump_format;
2270             }
2271             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2272                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2273                 av_buffersink_set_frame_size(ost->filter->filter,
2274                                              ost->st->codec->frame_size);
2275             assert_codec_experimental(ost->st->codec, 1);
2276             assert_avoptions(ost->opts);
2277             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2278                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2279                                              " It takes bits/s as argument, not kbits/s\n");
2280             extra_size += ost->st->codec->extradata_size;
2281
2282             if (ost->st->codec->me_threshold)
2283                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
2284         }
2285     }
2286
2287     /* init input streams */
2288     for (i = 0; i < nb_input_streams; i++)
2289         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
2290             goto dump_format;
2291
2292     /* discard unused programs */
2293     for (i = 0; i < nb_input_files; i++) {
2294         InputFile *ifile = input_files[i];
2295         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2296             AVProgram *p = ifile->ctx->programs[j];
2297             int discard  = AVDISCARD_ALL;
2298
2299             for (k = 0; k < p->nb_stream_indexes; k++)
2300                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2301                     discard = AVDISCARD_DEFAULT;
2302                     break;
2303                 }
2304             p->discard = discard;
2305         }
2306     }
2307
2308     /* open files and write file headers */
2309     for (i = 0; i < nb_output_files; i++) {
2310         oc = output_files[i]->ctx;
2311         oc->interrupt_callback = int_cb;
2312         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2313             char errbuf[128];
2314             const char *errbuf_ptr = errbuf;
2315             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
2316                 errbuf_ptr = strerror(AVUNERROR(ret));
2317             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
2318             ret = AVERROR(EINVAL);
2319             goto dump_format;
2320         }
2321 //         assert_avoptions(output_files[i]->opts);
2322         if (strcmp(oc->oformat->name, "rtp")) {
2323             want_sdp = 0;
2324         }
2325     }
2326
2327  dump_format:
2328     /* dump the file output parameters - cannot be done before in case
2329        of stream copy */
2330     for (i = 0; i < nb_output_files; i++) {
2331         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2332     }
2333
2334     /* dump the stream mapping */
2335     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2336     for (i = 0; i < nb_input_streams; i++) {
2337         ist = input_streams[i];
2338
2339         for (j = 0; j < ist->nb_filters; j++) {
2340             if (ist->filters[j]->graph->graph_desc) {
2341                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2342                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2343                        ist->filters[j]->name);
2344                 if (nb_filtergraphs > 1)
2345                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2346                 av_log(NULL, AV_LOG_INFO, "\n");
2347             }
2348         }
2349     }
2350
2351     for (i = 0; i < nb_output_streams; i++) {
2352         ost = output_streams[i];
2353
2354         if (ost->attachment_filename) {
2355             /* an attached file */
2356             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2357                    ost->attachment_filename, ost->file_index, ost->index);
2358             continue;
2359         }
2360
2361         if (ost->filter && ost->filter->graph->graph_desc) {
2362             /* output from a complex graph */
2363             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2364             if (nb_filtergraphs > 1)
2365                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2366
2367             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2368                    ost->index, ost->enc ? ost->enc->name : "?");
2369             continue;
2370         }
2371
2372         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2373                input_streams[ost->source_index]->file_index,
2374                input_streams[ost->source_index]->st->index,
2375                ost->file_index,
2376                ost->index);
2377         if (ost->sync_ist != input_streams[ost->source_index])
2378             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2379                    ost->sync_ist->file_index,
2380                    ost->sync_ist->st->index);
2381         if (ost->stream_copy)
2382             av_log(NULL, AV_LOG_INFO, " (copy)");
2383         else
2384             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2385                    input_streams[ost->source_index]->dec->name : "?",
2386                    ost->enc ? ost->enc->name : "?");
2387         av_log(NULL, AV_LOG_INFO, "\n");
2388     }
2389
2390     if (ret) {
2391         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2392         return ret;
2393     }
2394
2395     if (want_sdp) {
2396         print_sdp();
2397     }
2398
2399     return 0;
2400 }
2401
2402 /**
2403  * @return 1 if there are still streams where more output is wanted,
2404  *         0 otherwise
2405  */
2406 static int need_output(void)
2407 {
2408     int i;
2409
2410     for (i = 0; i < nb_output_streams; i++) {
2411         OutputStream *ost    = output_streams[i];
2412         OutputFile *of       = output_files[ost->file_index];
2413         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2414
2415         if (ost->finished ||
2416             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2417             continue;
2418         if (ost->frame_number >= ost->max_frames) {
2419             int j;
2420             for (j = 0; j < of->ctx->nb_streams; j++)
2421                 close_output_stream(output_streams[of->ost_index + j]);
2422             continue;
2423         }
2424
2425         return 1;
2426     }
2427
2428     return 0;
2429 }
2430
2431 /**
2432  * Select the output stream to process.
2433  *
2434  * @return  selected output stream, or NULL if none available
2435  */
2436 static OutputStream *choose_output(void)
2437 {
2438     int i;
2439     int64_t opts_min = INT64_MAX;
2440     OutputStream *ost_min = NULL;
2441
2442     for (i = 0; i < nb_output_streams; i++) {
2443         OutputStream *ost = output_streams[i];
2444         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2445                                     AV_TIME_BASE_Q);
2446         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2447             opts_min = opts;
2448             ost_min  = ost;
2449         }
2450     }
2451     return ost_min;
2452 }
2453
2454 static int check_keyboard_interaction(int64_t cur_time)
2455 {
2456     int i, ret, key;
2457     static int64_t last_time;
2458     if (received_nb_signals)
2459         return AVERROR_EXIT;
2460     /* read_key() returns 0 on EOF */
2461     if(cur_time - last_time >= 100000 && !run_as_daemon){
2462         key =  read_key();
2463         last_time = cur_time;
2464     }else
2465         key = -1;
2466     if (key == 'q')
2467         return AVERROR_EXIT;
2468     if (key == '+') av_log_set_level(av_log_get_level()+10);
2469     if (key == '-') av_log_set_level(av_log_get_level()-10);
2470     if (key == 's') qp_hist     ^= 1;
2471     if (key == 'h'){
2472         if (do_hex_dump){
2473             do_hex_dump = do_pkt_dump = 0;
2474         } else if(do_pkt_dump){
2475             do_hex_dump = 1;
2476         } else
2477             do_pkt_dump = 1;
2478         av_log_set_level(AV_LOG_DEBUG);
2479     }
2480     if (key == 'c' || key == 'C'){
2481         char buf[4096], target[64], command[256], arg[256] = {0};
2482         double time;
2483         int k, n = 0;
2484         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2485         i = 0;
2486         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2487             if (k > 0)
2488                 buf[i++] = k;
2489         buf[i] = 0;
2490         if (k > 0 &&
2491             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2492             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2493                    target, time, command, arg);
2494             for (i = 0; i < nb_filtergraphs; i++) {
2495                 FilterGraph *fg = filtergraphs[i];
2496                 if (fg->graph) {
2497                     if (time < 0) {
2498                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2499                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2500                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2501                     } else {
2502                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2503                     }
2504                 }
2505             }
2506         } else {
2507             av_log(NULL, AV_LOG_ERROR,
2508                    "Parse error, at least 3 arguments were expected, "
2509                    "only %d given in string '%s'\n", n, buf);
2510         }
2511     }
2512     if (key == 'd' || key == 'D'){
2513         int debug=0;
2514         if(key == 'D') {
2515             debug = input_streams[0]->st->codec->debug<<1;
2516             if(!debug) debug = 1;
2517             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2518                 debug += debug;
2519         }else
2520             if(scanf("%d", &debug)!=1)
2521                 fprintf(stderr,"error parsing debug value\n");
2522         for(i=0;i<nb_input_streams;i++) {
2523             input_streams[i]->st->codec->debug = debug;
2524         }
2525         for(i=0;i<nb_output_streams;i++) {
2526             OutputStream *ost = output_streams[i];
2527             ost->st->codec->debug = debug;
2528         }
2529         if(debug) av_log_set_level(AV_LOG_DEBUG);
2530         fprintf(stderr,"debug=%d\n", debug);
2531     }
2532     if (key == '?'){
2533         fprintf(stderr, "key    function\n"
2534                         "?      show this help\n"
2535                         "+      increase verbosity\n"
2536                         "-      decrease verbosity\n"
2537                         "c      Send command to filtergraph\n"
2538                         "D      cycle through available debug modes\n"
2539                         "h      dump packets/hex press to cycle through the 3 states\n"
2540                         "q      quit\n"
2541                         "s      Show QP histogram\n"
2542         );
2543     }
2544     return 0;
2545 }
2546
2547 #if HAVE_PTHREADS
2548 static void *input_thread(void *arg)
2549 {
2550     InputFile *f = arg;
2551     int ret = 0;
2552
2553     while (!transcoding_finished && ret >= 0) {
2554         AVPacket pkt;
2555         ret = av_read_frame(f->ctx, &pkt);
2556
2557         if (ret == AVERROR(EAGAIN)) {
2558             av_usleep(10000);
2559             ret = 0;
2560             continue;
2561         } else if (ret < 0)
2562             break;
2563
2564         pthread_mutex_lock(&f->fifo_lock);
2565         while (!av_fifo_space(f->fifo))
2566             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2567
2568         av_dup_packet(&pkt);
2569         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2570
2571         pthread_mutex_unlock(&f->fifo_lock);
2572     }
2573
2574     f->finished = 1;
2575     return NULL;
2576 }
2577
2578 static void free_input_threads(void)
2579 {
2580     int i;
2581
2582     if (nb_input_files == 1)
2583         return;
2584
2585     transcoding_finished = 1;
2586
2587     for (i = 0; i < nb_input_files; i++) {
2588         InputFile *f = input_files[i];
2589         AVPacket pkt;
2590
2591         if (!f->fifo || f->joined)
2592             continue;
2593
2594         pthread_mutex_lock(&f->fifo_lock);
2595         while (av_fifo_size(f->fifo)) {
2596             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2597             av_free_packet(&pkt);
2598         }
2599         pthread_cond_signal(&f->fifo_cond);
2600         pthread_mutex_unlock(&f->fifo_lock);
2601
2602         pthread_join(f->thread, NULL);
2603         f->joined = 1;
2604
2605         while (av_fifo_size(f->fifo)) {
2606             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2607             av_free_packet(&pkt);
2608         }
2609         av_fifo_free(f->fifo);
2610     }
2611 }
2612
2613 static int init_input_threads(void)
2614 {
2615     int i, ret;
2616
2617     if (nb_input_files == 1)
2618         return 0;
2619
2620     for (i = 0; i < nb_input_files; i++) {
2621         InputFile *f = input_files[i];
2622
2623         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2624             return AVERROR(ENOMEM);
2625
2626         pthread_mutex_init(&f->fifo_lock, NULL);
2627         pthread_cond_init (&f->fifo_cond, NULL);
2628
2629         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2630             return AVERROR(ret);
2631     }
2632     return 0;
2633 }
2634
2635 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2636 {
2637     int ret = 0;
2638
2639     pthread_mutex_lock(&f->fifo_lock);
2640
2641     if (av_fifo_size(f->fifo)) {
2642         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2643         pthread_cond_signal(&f->fifo_cond);
2644     } else {
2645         if (f->finished)
2646             ret = AVERROR_EOF;
2647         else
2648             ret = AVERROR(EAGAIN);
2649     }
2650
2651     pthread_mutex_unlock(&f->fifo_lock);
2652
2653     return ret;
2654 }
2655 #endif
2656
2657 static int get_input_packet(InputFile *f, AVPacket *pkt)
2658 {
2659 #if HAVE_PTHREADS
2660     if (nb_input_files > 1)
2661         return get_input_packet_mt(f, pkt);
2662 #endif
2663     return av_read_frame(f->ctx, pkt);
2664 }
2665
2666 static int got_eagain(void)
2667 {
2668     int i;
2669     for (i = 0; i < nb_output_streams; i++)
2670         if (output_streams[i]->unavailable)
2671             return 1;
2672     return 0;
2673 }
2674
2675 static void reset_eagain(void)
2676 {
2677     int i;
2678     for (i = 0; i < nb_input_files; i++)
2679         input_files[i]->eagain = 0;
2680     for (i = 0; i < nb_output_streams; i++)
2681         output_streams[i]->unavailable = 0;
2682 }
2683
2684 /**
2685  * @return
2686  * - 0 -- one packet was read and processed
2687  * - AVERROR(EAGAIN) -- no packets were available for selected file,
2688  *   this function should be called again
2689  * - AVERROR_EOF -- this function should not be called again
2690  */
2691 static int process_input(int file_index)
2692 {
2693     InputFile *ifile = input_files[file_index];
2694     AVFormatContext *is;
2695     InputStream *ist;
2696     AVPacket pkt;
2697     int ret, i, j;
2698
2699     is  = ifile->ctx;
2700     ret = get_input_packet(ifile, &pkt);
2701
2702     if (ret == AVERROR(EAGAIN)) {
2703         ifile->eagain = 1;
2704         return ret;
2705     }
2706     if (ret < 0) {
2707         if (ret != AVERROR_EOF) {
2708             print_error(is->filename, ret);
2709             if (exit_on_error)
2710                 exit_program(1);
2711         }
2712         ifile->eof_reached = 1;
2713
2714         for (i = 0; i < ifile->nb_streams; i++) {
2715             ist = input_streams[ifile->ist_index + i];
2716             if (ist->decoding_needed)
2717                 output_packet(ist, NULL);
2718
2719             /* mark all outputs that don't go through lavfi as finished */
2720             for (j = 0; j < nb_output_streams; j++) {
2721                 OutputStream *ost = output_streams[j];
2722
2723                 if (ost->source_index == ifile->ist_index + i &&
2724                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2725                     close_output_stream(ost);
2726             }
2727         }
2728
2729         return AVERROR(EAGAIN);
2730     }
2731
2732     reset_eagain();
2733
2734     if (do_pkt_dump) {
2735         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2736                          is->streams[pkt.stream_index]);
2737     }
2738     /* the following test is needed in case new streams appear
2739        dynamically in stream : we ignore them */
2740     if (pkt.stream_index >= ifile->nb_streams) {
2741         report_new_stream(file_index, &pkt);
2742         goto discard_packet;
2743     }
2744
2745     ist = input_streams[ifile->ist_index + pkt.stream_index];
2746     if (ist->discard)
2747         goto discard_packet;
2748
2749     if(!ist->wrap_correction_done && input_files[file_index]->ctx->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
2750         int64_t stime = av_rescale_q(input_files[file_index]->ctx->start_time, AV_TIME_BASE_Q, ist->st->time_base);
2751         int64_t stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
2752         ist->wrap_correction_done = 1;
2753
2754         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2755             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
2756             ist->wrap_correction_done = 0;
2757         }
2758         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2759             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
2760             ist->wrap_correction_done = 0;
2761         }
2762     }
2763
2764     if (pkt.dts != AV_NOPTS_VALUE)
2765         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2766     if (pkt.pts != AV_NOPTS_VALUE)
2767         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2768
2769     if (pkt.pts != AV_NOPTS_VALUE)
2770         pkt.pts *= ist->ts_scale;
2771     if (pkt.dts != AV_NOPTS_VALUE)
2772         pkt.dts *= ist->ts_scale;
2773
2774     if (debug_ts) {
2775         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
2776                 "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",
2777                 ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2778                 av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
2779                 av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
2780                 av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2781                 av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2782                 input_files[ist->file_index]->ts_offset);
2783     }
2784
2785     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2786         !copy_ts) {
2787         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2788         int64_t delta   = pkt_dts - ist->next_dts;
2789         if (is->iformat->flags & AVFMT_TS_DISCONT) {
2790         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2791             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2792                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2793             pkt_dts+1<ist->pts){
2794             ifile->ts_offset -= delta;
2795             av_log(NULL, AV_LOG_DEBUG,
2796                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2797                    delta, ifile->ts_offset);
2798             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2799             if (pkt.pts != AV_NOPTS_VALUE)
2800                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2801         }
2802         } else {
2803             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2804                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2805                ) {
2806                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
2807                 pkt.dts = AV_NOPTS_VALUE;
2808             }
2809             if (pkt.pts != AV_NOPTS_VALUE){
2810                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
2811                 delta   = pkt_pts - ist->next_dts;
2812                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2813                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2814                    ) {
2815                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
2816                     pkt.pts = AV_NOPTS_VALUE;
2817                 }
2818             }
2819         }
2820     }
2821
2822     sub2video_heartbeat(ist, pkt.pts);
2823
2824     ret = output_packet(ist, &pkt);
2825     if (ret < 0) {
2826         char buf[128];
2827         av_strerror(ret, buf, sizeof(buf));
2828         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
2829                 ist->file_index, ist->st->index, buf);
2830         if (exit_on_error)
2831             exit_program(1);
2832     }
2833
2834 discard_packet:
2835     av_free_packet(&pkt);
2836
2837     return 0;
2838 }
2839
2840 /**
2841  * Perform a step of transcoding for the specified filter graph.
2842  *
2843  * @param[in]  graph     filter graph to consider
2844  * @param[out] best_ist  input stream where a frame would allow to continue
2845  * @return  0 for success, <0 for error
2846  */
2847 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
2848 {
2849     int i, ret;
2850     int nb_requests, nb_requests_max = 0;
2851     InputFilter *ifilter;
2852     InputStream *ist;
2853
2854     *best_ist = NULL;
2855     ret = avfilter_graph_request_oldest(graph->graph);
2856     if (ret >= 0)
2857         return reap_filters();
2858
2859     if (ret == AVERROR_EOF) {
2860         ret = reap_filters();
2861         for (i = 0; i < graph->nb_outputs; i++)
2862             close_output_stream(graph->outputs[i]->ost);
2863         return ret;
2864     }
2865     if (ret != AVERROR(EAGAIN))
2866         return ret;
2867
2868     for (i = 0; i < graph->nb_inputs; i++) {
2869         ifilter = graph->inputs[i];
2870         ist = ifilter->ist;
2871         if (input_files[ist->file_index]->eagain ||
2872             input_files[ist->file_index]->eof_reached)
2873             continue;
2874         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
2875         if (nb_requests > nb_requests_max) {
2876             nb_requests_max = nb_requests;
2877             *best_ist = ist;
2878         }
2879     }
2880
2881     if (!*best_ist)
2882         for (i = 0; i < graph->nb_outputs; i++)
2883             graph->outputs[i]->ost->unavailable = 1;
2884
2885     return 0;
2886 }
2887
2888 /**
2889  * Run a single step of transcoding.
2890  *
2891  * @return  0 for success, <0 for error
2892  */
2893 static int transcode_step(void)
2894 {
2895     OutputStream *ost;
2896     InputStream  *ist;
2897     int ret;
2898
2899     ost = choose_output();
2900     if (!ost) {
2901         if (got_eagain()) {
2902             reset_eagain();
2903             av_usleep(10000);
2904             return 0;
2905         }
2906         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
2907         return AVERROR_EOF;
2908     }
2909
2910     if (ost->filter) {
2911         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
2912             return ret;
2913         if (!ist)
2914             return 0;
2915     } else {
2916         av_assert0(ost->source_index >= 0);
2917         ist = input_streams[ost->source_index];
2918     }
2919
2920     ret = process_input(ist->file_index);
2921     if (ret == AVERROR(EAGAIN)) {
2922         if (input_files[ist->file_index]->eagain)
2923             ost->unavailable = 1;
2924         return 0;
2925     }
2926     if (ret < 0)
2927         return ret == AVERROR_EOF ? 0 : ret;
2928
2929     return reap_filters();
2930 }
2931
2932 /*
2933  * The following code is the main loop of the file converter
2934  */
2935 static int transcode(void)
2936 {
2937     int ret, i;
2938     AVFormatContext *os;
2939     OutputStream *ost;
2940     InputStream *ist;
2941     int64_t timer_start;
2942
2943     ret = transcode_init();
2944     if (ret < 0)
2945         goto fail;
2946
2947     if (stdin_interaction) {
2948         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
2949     }
2950
2951     timer_start = av_gettime();
2952
2953 #if HAVE_PTHREADS
2954     if ((ret = init_input_threads()) < 0)
2955         goto fail;
2956 #endif
2957
2958     while (!received_sigterm) {
2959         int64_t cur_time= av_gettime();
2960
2961         /* if 'q' pressed, exits */
2962         if (stdin_interaction)
2963             if (check_keyboard_interaction(cur_time) < 0)
2964                 break;
2965
2966         /* check if there's any stream where output is still needed */
2967         if (!need_output()) {
2968             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
2969             break;
2970         }
2971
2972         ret = transcode_step();
2973         if (ret < 0) {
2974             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
2975                 continue;
2976
2977             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
2978             break;
2979         }
2980
2981         /* dump report by using the output first video and audio streams */
2982         print_report(0, timer_start, cur_time);
2983     }
2984 #if HAVE_PTHREADS
2985     free_input_threads();
2986 #endif
2987
2988     /* at the end of stream, we must flush the decoder buffers */
2989     for (i = 0; i < nb_input_streams; i++) {
2990         ist = input_streams[i];
2991         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
2992             output_packet(ist, NULL);
2993         }
2994     }
2995     flush_encoders();
2996
2997     term_exit();
2998
2999     /* write the trailer if needed and close file */
3000     for (i = 0; i < nb_output_files; i++) {
3001         os = output_files[i]->ctx;
3002         av_write_trailer(os);
3003     }
3004
3005     /* dump report by using the first video and audio streams */
3006     print_report(1, timer_start, av_gettime());
3007
3008     /* close each encoder */
3009     for (i = 0; i < nb_output_streams; i++) {
3010         ost = output_streams[i];
3011         if (ost->encoding_needed) {
3012             av_freep(&ost->st->codec->stats_in);
3013             avcodec_close(ost->st->codec);
3014         }
3015     }
3016
3017     /* close each decoder */
3018     for (i = 0; i < nb_input_streams; i++) {
3019         ist = input_streams[i];
3020         if (ist->decoding_needed) {
3021             avcodec_close(ist->st->codec);
3022         }
3023     }
3024
3025     /* finished ! */
3026     ret = 0;
3027
3028  fail:
3029 #if HAVE_PTHREADS
3030     free_input_threads();
3031 #endif
3032
3033     if (output_streams) {
3034         for (i = 0; i < nb_output_streams; i++) {
3035             ost = output_streams[i];
3036             if (ost) {
3037                 if (ost->stream_copy)
3038                     av_freep(&ost->st->codec->extradata);
3039                 if (ost->logfile) {
3040                     fclose(ost->logfile);
3041                     ost->logfile = NULL;
3042                 }
3043                 av_freep(&ost->st->codec->subtitle_header);
3044                 av_free(ost->forced_kf_pts);
3045                 av_dict_free(&ost->opts);
3046             }
3047         }
3048     }
3049     return ret;
3050 }
3051
3052
3053 static int64_t getutime(void)
3054 {
3055 #if HAVE_GETRUSAGE
3056     struct rusage rusage;
3057
3058     getrusage(RUSAGE_SELF, &rusage);
3059     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3060 #elif HAVE_GETPROCESSTIMES
3061     HANDLE proc;
3062     FILETIME c, e, k, u;
3063     proc = GetCurrentProcess();
3064     GetProcessTimes(proc, &c, &e, &k, &u);
3065     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3066 #else
3067     return av_gettime();
3068 #endif
3069 }
3070
3071 static int64_t getmaxrss(void)
3072 {
3073 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3074     struct rusage rusage;
3075     getrusage(RUSAGE_SELF, &rusage);
3076     return (int64_t)rusage.ru_maxrss * 1024;
3077 #elif HAVE_GETPROCESSMEMORYINFO
3078     HANDLE proc;
3079     PROCESS_MEMORY_COUNTERS memcounters;
3080     proc = GetCurrentProcess();
3081     memcounters.cb = sizeof(memcounters);
3082     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3083     return memcounters.PeakPagefileUsage;
3084 #else
3085     return 0;
3086 #endif
3087 }
3088
3089 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3090 {
3091 }
3092
3093 static void parse_cpuflags(int argc, char **argv, const OptionDef *options)
3094 {
3095     int idx = locate_option(argc, argv, options, "cpuflags");
3096     if (idx && argv[idx + 1])
3097         opt_cpuflags(NULL, "cpuflags", argv[idx + 1]);
3098 }
3099
3100 int main(int argc, char **argv)
3101 {
3102     OptionsContext o = { 0 };
3103     int64_t ti;
3104
3105     reset_options(&o, 0);
3106
3107     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3108     parse_loglevel(argc, argv, options);
3109
3110     if(argc>1 && !strcmp(argv[1], "-d")){
3111         run_as_daemon=1;
3112         av_log_set_callback(log_callback_null);
3113         argc--;
3114         argv++;
3115     }
3116
3117     avcodec_register_all();
3118 #if CONFIG_AVDEVICE
3119     avdevice_register_all();
3120 #endif
3121     avfilter_register_all();
3122     av_register_all();
3123     avformat_network_init();
3124
3125     show_banner(argc, argv, options);
3126
3127     term_init();
3128
3129     parse_cpuflags(argc, argv, options);
3130
3131     /* parse options */
3132     parse_options(&o, argc, argv, options, opt_output_file);
3133
3134     if (nb_output_files <= 0 && nb_input_files == 0) {
3135         show_usage();
3136         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3137         exit_program(1);
3138     }
3139
3140     /* file converter / grab */
3141     if (nb_output_files <= 0) {
3142         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3143         exit_program(1);
3144     }
3145
3146 //     if (nb_input_files == 0) {
3147 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3148 //         exit_program(1);
3149 //     }
3150
3151     current_time = ti = getutime();
3152     if (transcode() < 0)
3153         exit_program(1);
3154     ti = getutime() - ti;
3155     if (do_benchmark) {
3156         int maxrss = getmaxrss() / 1024;
3157         printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss);
3158     }
3159
3160     exit_program(0);
3161     return 0;
3162 }