ffmpeg: allow printing muxer side packet timestamp debuging info
[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)
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     int64_t pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ist->st->time_base);
213
214     if (!ref)
215         return;
216     dst          = ref->data    [0];
217     dst_linesize = ref->linesize[0];
218     memset(dst, 0, h * dst_linesize);
219     for (i = 0; i < sub->num_rects; i++)
220         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
221     sub2video_push_ref(ist, pts);
222 }
223
224 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
225 {
226     InputFile *infile = input_files[ist->file_index];
227     int i, j, nb_reqs;
228     int64_t pts2;
229
230     /* When a frame is read from a file, examine all sub2video streams in
231        the same file and send the sub2video frame again. Otherwise, decoded
232        video frames could be accumulating in the filter graph while a filter
233        (possibly overlay) is desperately waiting for a subtitle frame. */
234     for (i = 0; i < infile->nb_streams; i++) {
235         InputStream *ist2 = input_streams[infile->ist_index + i];
236         if (!ist2->sub2video.ref)
237             continue;
238         /* subtitles seem to be usually muxed ahead of other streams;
239            if not, substracting a larger time here is necessary */
240         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
241         /* do not send the heartbeat frame if the subtitle is already ahead */
242         if (pts2 <= ist2->sub2video.last_pts)
243             continue;
244         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
245             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
246         if (nb_reqs)
247             sub2video_push_ref(ist2, pts2);
248     }
249 }
250
251 static void sub2video_flush(InputStream *ist)
252 {
253     int i;
254
255     for (i = 0; i < ist->nb_filters; i++)
256         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
257 }
258
259 /* end of sub2video hack */
260
261 void term_exit(void)
262 {
263     av_log(NULL, AV_LOG_QUIET, "%s", "");
264 #if HAVE_TERMIOS_H
265     if(restore_tty)
266         tcsetattr (0, TCSANOW, &oldtty);
267 #endif
268 }
269
270 static volatile int received_sigterm = 0;
271 static volatile int received_nb_signals = 0;
272
273 static void
274 sigterm_handler(int sig)
275 {
276     received_sigterm = sig;
277     received_nb_signals++;
278     term_exit();
279     if(received_nb_signals > 3)
280         exit(123);
281 }
282
283 void term_init(void)
284 {
285 #if HAVE_TERMIOS_H
286     if(!run_as_daemon){
287         struct termios tty;
288         int istty = 1;
289 #if HAVE_ISATTY
290         istty = isatty(0) && isatty(2);
291 #endif
292         if (istty && tcgetattr (0, &tty) == 0) {
293             oldtty = tty;
294             restore_tty = 1;
295             atexit(term_exit);
296
297             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
298                              |INLCR|IGNCR|ICRNL|IXON);
299             tty.c_oflag |= OPOST;
300             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
301             tty.c_cflag &= ~(CSIZE|PARENB);
302             tty.c_cflag |= CS8;
303             tty.c_cc[VMIN] = 1;
304             tty.c_cc[VTIME] = 0;
305
306             tcsetattr (0, TCSANOW, &tty);
307         }
308         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
309     }
310 #endif
311     avformat_network_deinit();
312
313     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
314     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
315 #ifdef SIGXCPU
316     signal(SIGXCPU, sigterm_handler);
317 #endif
318 }
319
320 /* read a key without blocking */
321 static int read_key(void)
322 {
323     unsigned char ch;
324 #if HAVE_TERMIOS_H
325     int n = 1;
326     struct timeval tv;
327     fd_set rfds;
328
329     FD_ZERO(&rfds);
330     FD_SET(0, &rfds);
331     tv.tv_sec = 0;
332     tv.tv_usec = 0;
333     n = select(1, &rfds, NULL, NULL, &tv);
334     if (n > 0) {
335         n = read(0, &ch, 1);
336         if (n == 1)
337             return ch;
338
339         return n;
340     }
341 #elif HAVE_KBHIT
342 #    if HAVE_PEEKNAMEDPIPE
343     static int is_pipe;
344     static HANDLE input_handle;
345     DWORD dw, nchars;
346     if(!input_handle){
347         input_handle = GetStdHandle(STD_INPUT_HANDLE);
348         is_pipe = !GetConsoleMode(input_handle, &dw);
349     }
350
351     if (stdin->_cnt > 0) {
352         read(0, &ch, 1);
353         return ch;
354     }
355     if (is_pipe) {
356         /* When running under a GUI, you will end here. */
357         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
358             return -1;
359         //Read it
360         if(nchars != 0) {
361             read(0, &ch, 1);
362             return ch;
363         }else{
364             return -1;
365         }
366     }
367 #    endif
368     if(kbhit())
369         return(getch());
370 #endif
371     return -1;
372 }
373
374 static int decode_interrupt_cb(void *ctx)
375 {
376     return received_nb_signals > 1;
377 }
378
379 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
380
381 void av_noreturn exit_program(int ret)
382 {
383     int i, j;
384
385     for (i = 0; i < nb_filtergraphs; i++) {
386         avfilter_graph_free(&filtergraphs[i]->graph);
387         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
388             av_freep(&filtergraphs[i]->inputs[j]->name);
389             av_freep(&filtergraphs[i]->inputs[j]);
390         }
391         av_freep(&filtergraphs[i]->inputs);
392         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
393             av_freep(&filtergraphs[i]->outputs[j]->name);
394             av_freep(&filtergraphs[i]->outputs[j]);
395         }
396         av_freep(&filtergraphs[i]->outputs);
397         av_freep(&filtergraphs[i]);
398     }
399     av_freep(&filtergraphs);
400
401     av_freep(&subtitle_out);
402
403     /* close files */
404     for (i = 0; i < nb_output_files; i++) {
405         AVFormatContext *s = output_files[i]->ctx;
406         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
407             avio_close(s->pb);
408         avformat_free_context(s);
409         av_dict_free(&output_files[i]->opts);
410         av_freep(&output_files[i]);
411     }
412     for (i = 0; i < nb_output_streams; i++) {
413         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
414         while (bsfc) {
415             AVBitStreamFilterContext *next = bsfc->next;
416             av_bitstream_filter_close(bsfc);
417             bsfc = next;
418         }
419         output_streams[i]->bitstream_filters = NULL;
420         avcodec_free_frame(&output_streams[i]->filtered_frame);
421
422         av_freep(&output_streams[i]->forced_keyframes);
423         av_freep(&output_streams[i]->avfilter);
424         av_freep(&output_streams[i]->logfile_prefix);
425         av_freep(&output_streams[i]);
426     }
427     for (i = 0; i < nb_input_files; i++) {
428         avformat_close_input(&input_files[i]->ctx);
429         av_freep(&input_files[i]);
430     }
431     for (i = 0; i < nb_input_streams; i++) {
432         avcodec_free_frame(&input_streams[i]->decoded_frame);
433         av_dict_free(&input_streams[i]->opts);
434         free_buffer_pool(&input_streams[i]->buffer_pool);
435         avfilter_unref_bufferp(&input_streams[i]->sub2video.ref);
436         av_freep(&input_streams[i]->filters);
437         av_freep(&input_streams[i]);
438     }
439
440     if (vstats_file)
441         fclose(vstats_file);
442     av_free(vstats_filename);
443
444     av_freep(&input_streams);
445     av_freep(&input_files);
446     av_freep(&output_streams);
447     av_freep(&output_files);
448
449     uninit_opts();
450
451     avfilter_uninit();
452     avformat_network_deinit();
453
454     if (received_sigterm) {
455         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
456                (int) received_sigterm);
457         exit (255);
458     }
459
460     exit(ret);
461 }
462
463 void assert_avoptions(AVDictionary *m)
464 {
465     AVDictionaryEntry *t;
466     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
467         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
468         exit_program(1);
469     }
470 }
471
472 static void assert_codec_experimental(AVCodecContext *c, int encoder)
473 {
474     const char *codec_string = encoder ? "encoder" : "decoder";
475     AVCodec *codec;
476     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
477         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
478         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
479                 "results.\nAdd '-strict experimental' if you want to use it.\n",
480                 codec_string, c->codec->name);
481         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
482         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
483             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
484                    codec_string, codec->name);
485         exit_program(1);
486     }
487 }
488
489 static void update_benchmark(const char *fmt, ...)
490 {
491     if (do_benchmark_all) {
492         int64_t t = getutime();
493         va_list va;
494         char buf[1024];
495
496         if (fmt) {
497             va_start(va, fmt);
498             vsnprintf(buf, sizeof(buf), fmt, va);
499             va_end(va);
500             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
501         }
502         current_time = t;
503     }
504 }
505
506 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
507 {
508     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
509     AVCodecContext          *avctx = ost->st->codec;
510     int ret;
511
512     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
513         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
514         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
515
516     if ((avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) && pkt->dts != AV_NOPTS_VALUE) {
517         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
518         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
519             av_log(s, max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG,
520                    "st:%d PTS: %"PRId64" DTS: %"PRId64" < %"PRId64" invalid, clipping\n", pkt->stream_index, pkt->pts, pkt->dts, max);
521             if(pkt->pts >= pkt->dts)
522                 pkt->pts = FFMAX(pkt->pts, max);
523             pkt->dts = max;
524         }
525     }
526
527     /*
528      * Audio encoders may split the packets --  #frames in != #packets out.
529      * But there is no reordering, so we can limit the number of output packets
530      * by simply dropping them here.
531      * Counting encoded video frames needs to be done separately because of
532      * reordering, see do_video_out()
533      */
534     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
535         if (ost->frame_number >= ost->max_frames) {
536             av_free_packet(pkt);
537             return;
538         }
539         ost->frame_number++;
540     }
541
542     while (bsfc) {
543         AVPacket new_pkt = *pkt;
544         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
545                                            &new_pkt.data, &new_pkt.size,
546                                            pkt->data, pkt->size,
547                                            pkt->flags & AV_PKT_FLAG_KEY);
548         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
549             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
550             if(t) {
551                 memcpy(t, new_pkt.data, new_pkt.size);
552                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
553                 new_pkt.data = t;
554                 a = 1;
555             } else
556                 a = AVERROR(ENOMEM);
557         }
558         if (a > 0) {
559             av_free_packet(pkt);
560             new_pkt.destruct = av_destruct_packet;
561         } else if (a < 0) {
562             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
563                    bsfc->filter->name, pkt->stream_index,
564                    avctx->codec ? avctx->codec->name : "copy");
565             print_error("", a);
566             if (exit_on_error)
567                 exit_program(1);
568         }
569         *pkt = new_pkt;
570
571         bsfc = bsfc->next;
572     }
573
574     pkt->stream_index = ost->index;
575
576     if (debug_ts) {
577         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
578                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
579                 av_get_media_type_string(ost->st->codec->codec_type),
580                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
581                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base)
582               );
583     }
584
585     ret = av_interleaved_write_frame(s, pkt);
586     if (ret < 0) {
587         print_error("av_interleaved_write_frame()", ret);
588         exit_program(1);
589     }
590 }
591
592 static void close_output_stream(OutputStream *ost)
593 {
594     OutputFile *of = output_files[ost->file_index];
595
596     ost->finished = 1;
597     if (of->shortest) {
598         int i;
599         for (i = 0; i < of->ctx->nb_streams; i++)
600             output_streams[of->ost_index + i]->finished = 1;
601     }
602 }
603
604 static int check_recording_time(OutputStream *ost)
605 {
606     OutputFile *of = output_files[ost->file_index];
607
608     if (of->recording_time != INT64_MAX &&
609         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
610                       AV_TIME_BASE_Q) >= 0) {
611         close_output_stream(ost);
612         return 0;
613     }
614     return 1;
615 }
616
617 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
618                          AVFrame *frame)
619 {
620     AVCodecContext *enc = ost->st->codec;
621     AVPacket pkt;
622     int got_packet = 0;
623
624     av_init_packet(&pkt);
625     pkt.data = NULL;
626     pkt.size = 0;
627
628     if (!check_recording_time(ost))
629         return;
630
631     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
632         frame->pts = ost->sync_opts;
633     ost->sync_opts = frame->pts + frame->nb_samples;
634
635     av_assert0(pkt.size || !pkt.data);
636     update_benchmark(NULL);
637     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
638         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
639         exit_program(1);
640     }
641     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
642
643     if (got_packet) {
644         if (pkt.pts != AV_NOPTS_VALUE)
645             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
646         if (pkt.dts != AV_NOPTS_VALUE)
647             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
648         if (pkt.duration > 0)
649             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
650
651         if (debug_ts) {
652             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
653                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
654                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
655                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
656         }
657
658         audio_size += pkt.size;
659         write_frame(s, &pkt, ost);
660
661         av_free_packet(&pkt);
662     }
663 }
664
665 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
666 {
667     AVCodecContext *dec;
668     AVPicture *picture2;
669     AVPicture picture_tmp;
670     uint8_t *buf = 0;
671
672     dec = ist->st->codec;
673
674     /* deinterlace : must be done before any resize */
675     if (do_deinterlace) {
676         int size;
677
678         /* create temporary picture */
679         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
680         buf  = av_malloc(size);
681         if (!buf)
682             return;
683
684         picture2 = &picture_tmp;
685         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
686
687         if (avpicture_deinterlace(picture2, picture,
688                                  dec->pix_fmt, dec->width, dec->height) < 0) {
689             /* if error, do not deinterlace */
690             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
691             av_free(buf);
692             buf = NULL;
693             picture2 = picture;
694         }
695     } else {
696         picture2 = picture;
697     }
698
699     if (picture != picture2)
700         *picture = *picture2;
701     *bufp = buf;
702 }
703
704 static void do_subtitle_out(AVFormatContext *s,
705                             OutputStream *ost,
706                             InputStream *ist,
707                             AVSubtitle *sub)
708 {
709     int subtitle_out_max_size = 1024 * 1024;
710     int subtitle_out_size, nb, i;
711     AVCodecContext *enc;
712     AVPacket pkt;
713     int64_t pts;
714
715     if (sub->pts == AV_NOPTS_VALUE) {
716         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
717         if (exit_on_error)
718             exit_program(1);
719         return;
720     }
721
722     enc = ost->st->codec;
723
724     if (!subtitle_out) {
725         subtitle_out = av_malloc(subtitle_out_max_size);
726     }
727
728     /* Note: DVB subtitle need one packet to draw them and one other
729        packet to clear them */
730     /* XXX: signal it in the codec context ? */
731     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
732         nb = 2;
733     else
734         nb = 1;
735
736     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
737     pts = sub->pts - output_files[ost->file_index]->start_time;
738     for (i = 0; i < nb; i++) {
739         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
740         if (!check_recording_time(ost))
741             return;
742
743         sub->pts = pts;
744         // start_display_time is required to be 0
745         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
746         sub->end_display_time  -= sub->start_display_time;
747         sub->start_display_time = 0;
748         if (i == 1)
749             sub->num_rects = 0;
750         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
751                                                     subtitle_out_max_size, sub);
752         if (subtitle_out_size < 0) {
753             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
754             exit_program(1);
755         }
756
757         av_init_packet(&pkt);
758         pkt.data = subtitle_out;
759         pkt.size = subtitle_out_size;
760         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
761         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
762         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
763             /* XXX: the pts correction is handled here. Maybe handling
764                it in the codec would be better */
765             if (i == 0)
766                 pkt.pts += 90 * sub->start_display_time;
767             else
768                 pkt.pts += 90 * sub->end_display_time;
769         }
770         subtitle_size += pkt.size;
771         write_frame(s, &pkt, ost);
772     }
773 }
774
775 static void do_video_out(AVFormatContext *s,
776                          OutputStream *ost,
777                          AVFrame *in_picture,
778                          float quality)
779 {
780     int ret, format_video_sync;
781     AVPacket pkt;
782     AVCodecContext *enc = ost->st->codec;
783     int nb_frames, i;
784     double sync_ipts, delta;
785     double duration = 0;
786     int frame_size = 0;
787     InputStream *ist = NULL;
788
789     if (ost->source_index >= 0)
790         ist = input_streams[ost->source_index];
791
792     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
793         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
794
795     sync_ipts = in_picture->pts;
796     delta = sync_ipts - ost->sync_opts + duration;
797
798     /* by default, we output a single frame */
799     nb_frames = 1;
800
801     format_video_sync = video_sync_method;
802     if (format_video_sync == VSYNC_AUTO)
803         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
804
805     switch (format_video_sync) {
806     case VSYNC_CFR:
807         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
808         if (delta < -1.1)
809             nb_frames = 0;
810         else if (delta > 1.1)
811             nb_frames = lrintf(delta);
812         break;
813     case VSYNC_VFR:
814         if (delta <= -0.6)
815             nb_frames = 0;
816         else if (delta > 0.6)
817             ost->sync_opts = lrint(sync_ipts);
818         break;
819     case VSYNC_DROP:
820     case VSYNC_PASSTHROUGH:
821         ost->sync_opts = lrint(sync_ipts);
822         break;
823     default:
824         av_assert0(0);
825     }
826
827     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
828     if (nb_frames == 0) {
829         nb_frames_drop++;
830         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
831         return;
832     } else if (nb_frames > 1) {
833         if (nb_frames > dts_error_threshold * 30) {
834             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
835             nb_frames_drop++;
836             return;
837         }
838         nb_frames_dup += nb_frames - 1;
839         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
840     }
841
842   /* duplicates frame if needed */
843   for (i = 0; i < nb_frames; i++) {
844     av_init_packet(&pkt);
845     pkt.data = NULL;
846     pkt.size = 0;
847
848     in_picture->pts = ost->sync_opts;
849
850     if (!check_recording_time(ost))
851         return;
852
853     if (s->oformat->flags & AVFMT_RAWPICTURE &&
854         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
855         /* raw pictures are written as AVPicture structure to
856            avoid any copies. We support temporarily the older
857            method. */
858         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
859         enc->coded_frame->top_field_first  = in_picture->top_field_first;
860         pkt.data   = (uint8_t *)in_picture;
861         pkt.size   =  sizeof(AVPicture);
862         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
863         pkt.flags |= AV_PKT_FLAG_KEY;
864
865         video_size += pkt.size;
866         write_frame(s, &pkt, ost);
867     } else {
868         int got_packet;
869         AVFrame big_picture;
870
871         big_picture = *in_picture;
872         /* better than nothing: use input picture interlaced
873            settings */
874         big_picture.interlaced_frame = in_picture->interlaced_frame;
875         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
876             if (ost->top_field_first == -1)
877                 big_picture.top_field_first = in_picture->top_field_first;
878             else
879                 big_picture.top_field_first = !!ost->top_field_first;
880         }
881
882         /* handles same_quant here. This is not correct because it may
883            not be a global option */
884         big_picture.quality = quality;
885         if (!enc->me_threshold)
886             big_picture.pict_type = 0;
887         if (ost->forced_kf_index < ost->forced_kf_count &&
888             big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
889             big_picture.pict_type = AV_PICTURE_TYPE_I;
890             ost->forced_kf_index++;
891         }
892         update_benchmark(NULL);
893         ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
894         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
895         if (ret < 0) {
896             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
897             exit_program(1);
898         }
899
900         if (got_packet) {
901             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
902                 pkt.pts = ost->sync_opts;
903
904             if (pkt.pts != AV_NOPTS_VALUE)
905                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
906             if (pkt.dts != AV_NOPTS_VALUE)
907                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
908
909             if (debug_ts) {
910                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
911                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
912                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
913                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
914             }
915
916             frame_size = pkt.size;
917             video_size += pkt.size;
918             write_frame(s, &pkt, ost);
919             av_free_packet(&pkt);
920
921             /* if two pass, output log */
922             if (ost->logfile && enc->stats_out) {
923                 fprintf(ost->logfile, "%s", enc->stats_out);
924             }
925         }
926     }
927     ost->sync_opts++;
928     /*
929      * For video, number of frames in == number of packets out.
930      * But there may be reordering, so we can't throw away frames on encoder
931      * flush, we need to limit them here, before they go into encoder.
932      */
933     ost->frame_number++;
934   }
935
936     if (vstats_filename && frame_size)
937         do_video_stats(output_files[ost->file_index]->ctx, ost, frame_size);
938 }
939
940 static double psnr(double d)
941 {
942     return -10.0 * log(d) / log(10.0);
943 }
944
945 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
946                            int frame_size)
947 {
948     AVCodecContext *enc;
949     int frame_number;
950     double ti1, bitrate, avg_bitrate;
951
952     /* this is executed just the first time do_video_stats is called */
953     if (!vstats_file) {
954         vstats_file = fopen(vstats_filename, "w");
955         if (!vstats_file) {
956             perror("fopen");
957             exit_program(1);
958         }
959     }
960
961     enc = ost->st->codec;
962     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
963         frame_number = ost->frame_number;
964         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
965         if (enc->flags&CODEC_FLAG_PSNR)
966             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
967
968         fprintf(vstats_file,"f_size= %6d ", frame_size);
969         /* compute pts value */
970         ti1 = ost->sync_opts * av_q2d(enc->time_base);
971         if (ti1 < 0.01)
972             ti1 = 0.01;
973
974         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
975         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
976         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
977                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
978         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
979     }
980 }
981
982 /**
983  * Get and encode new output from any of the filtergraphs, without causing
984  * activity.
985  *
986  * @return  0 for success, <0 for severe errors
987  */
988 static int reap_filters(void)
989 {
990     AVFilterBufferRef *picref;
991     AVFrame *filtered_frame = NULL;
992     int i;
993     int64_t frame_pts;
994
995     /* Reap all buffers present in the buffer sinks */
996     for (i = 0; i < nb_output_streams; i++) {
997         OutputStream *ost = output_streams[i];
998         OutputFile    *of = output_files[ost->file_index];
999         int ret = 0;
1000
1001         if (!ost->filter)
1002             continue;
1003
1004         if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1005             return AVERROR(ENOMEM);
1006         } else
1007             avcodec_get_frame_defaults(ost->filtered_frame);
1008         filtered_frame = ost->filtered_frame;
1009
1010         while (1) {
1011             ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
1012                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1013             if (ret < 0) {
1014                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1015                     char buf[256];
1016                     av_strerror(ret, buf, sizeof(buf));
1017                     av_log(NULL, AV_LOG_WARNING,
1018                            "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
1019                 }
1020                 break;
1021             }
1022             frame_pts = AV_NOPTS_VALUE;
1023             if (picref->pts != AV_NOPTS_VALUE) {
1024                 filtered_frame->pts = frame_pts = av_rescale_q(picref->pts,
1025                                                 ost->filter->filter->inputs[0]->time_base,
1026                                                 ost->st->codec->time_base) -
1027                                     av_rescale_q(of->start_time,
1028                                                 AV_TIME_BASE_Q,
1029                                                 ost->st->codec->time_base);
1030
1031                 if (of->start_time && filtered_frame->pts < 0) {
1032                     avfilter_unref_buffer(picref);
1033                     continue;
1034                 }
1035             }
1036             //if (ost->source_index >= 0)
1037             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1038
1039
1040             switch (ost->filter->filter->inputs[0]->type) {
1041             case AVMEDIA_TYPE_VIDEO:
1042                 avfilter_copy_buf_props(filtered_frame, picref);
1043                 filtered_frame->pts = frame_pts;
1044                 if (!ost->frame_aspect_ratio)
1045                     ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
1046
1047                 do_video_out(of->ctx, ost, filtered_frame,
1048                              same_quant ? ost->last_quality :
1049                                           ost->st->codec->global_quality);
1050                 break;
1051             case AVMEDIA_TYPE_AUDIO:
1052                 avfilter_copy_buf_props(filtered_frame, picref);
1053                 filtered_frame->pts = frame_pts;
1054                 do_audio_out(of->ctx, ost, filtered_frame);
1055                 break;
1056             default:
1057                 // TODO support subtitle filters
1058                 av_assert0(0);
1059             }
1060
1061             avfilter_unref_buffer(picref);
1062         }
1063     }
1064
1065     return 0;
1066 }
1067
1068 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1069 {
1070     char buf[1024];
1071     AVBPrint buf_script;
1072     OutputStream *ost;
1073     AVFormatContext *oc;
1074     int64_t total_size;
1075     AVCodecContext *enc;
1076     int frame_number, vid, i;
1077     double bitrate;
1078     int64_t pts = INT64_MIN;
1079     static int64_t last_time = -1;
1080     static int qp_histogram[52];
1081     int hours, mins, secs, us;
1082
1083     if (!print_stats && !is_last_report && !progress_avio)
1084         return;
1085
1086     if (!is_last_report) {
1087         if (last_time == -1) {
1088             last_time = cur_time;
1089             return;
1090         }
1091         if ((cur_time - last_time) < 500000)
1092             return;
1093         last_time = cur_time;
1094     }
1095
1096
1097     oc = output_files[0]->ctx;
1098
1099     total_size = avio_size(oc->pb);
1100     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
1101         total_size = avio_tell(oc->pb);
1102         if (total_size < 0)
1103             total_size = 0;
1104     }
1105
1106     buf[0] = '\0';
1107     vid = 0;
1108     av_bprint_init(&buf_script, 0, 1);
1109     for (i = 0; i < nb_output_streams; i++) {
1110         float q = -1;
1111         ost = output_streams[i];
1112         enc = ost->st->codec;
1113         if (!ost->stream_copy && enc->coded_frame)
1114             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1115         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1116             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1117             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1118                        ost->file_index, ost->index, q);
1119         }
1120         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1121             float fps, t = (cur_time-timer_start) / 1000000.0;
1122
1123             frame_number = ost->frame_number;
1124             fps = t > 1 ? frame_number / t : 0;
1125             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1126                      frame_number, fps < 9.95, fps, q);
1127             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1128             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1129             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1130                        ost->file_index, ost->index, q);
1131             if (is_last_report)
1132                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1133             if (qp_hist) {
1134                 int j;
1135                 int qp = lrintf(q);
1136                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1137                     qp_histogram[qp]++;
1138                 for (j = 0; j < 32; j++)
1139                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1140             }
1141             if (enc->flags&CODEC_FLAG_PSNR) {
1142                 int j;
1143                 double error, error_sum = 0;
1144                 double scale, scale_sum = 0;
1145                 double p;
1146                 char type[3] = { 'Y','U','V' };
1147                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1148                 for (j = 0; j < 3; j++) {
1149                     if (is_last_report) {
1150                         error = enc->error[j];
1151                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1152                     } else {
1153                         error = enc->coded_frame->error[j];
1154                         scale = enc->width * enc->height * 255.0 * 255.0;
1155                     }
1156                     if (j)
1157                         scale /= 4;
1158                     error_sum += error;
1159                     scale_sum += scale;
1160                     p = psnr(error / scale);
1161                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1162                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1163                                ost->file_index, ost->index, type[i] | 32, p);
1164                 }
1165                 p = psnr(error_sum / scale_sum);
1166                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1167                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1168                            ost->file_index, ost->index, p);
1169             }
1170             vid = 1;
1171         }
1172         /* compute min output value */
1173         if ((is_last_report || !ost->finished) && ost->st->pts.val != AV_NOPTS_VALUE)
1174             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1175                                           ost->st->time_base, AV_TIME_BASE_Q));
1176     }
1177
1178     secs = pts / AV_TIME_BASE;
1179     us = pts % AV_TIME_BASE;
1180     mins = secs / 60;
1181     secs %= 60;
1182     hours = mins / 60;
1183     mins %= 60;
1184
1185     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1186
1187     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1188              "size=%8.0fkB time=", total_size / 1024.0);
1189     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1190              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1191              (100 * us) / AV_TIME_BASE);
1192     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1193              "bitrate=%6.1fkbits/s", bitrate);
1194     av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1195     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1196     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1197                hours, mins, secs, us);
1198
1199     if (nb_frames_dup || nb_frames_drop)
1200         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1201                 nb_frames_dup, nb_frames_drop);
1202     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1203     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1204
1205     if (print_stats || is_last_report) {
1206     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1207
1208     fflush(stderr);
1209     }
1210
1211     if (progress_avio) {
1212         av_bprintf(&buf_script, "progress=%s\n",
1213                    is_last_report ? "end" : "continue");
1214         avio_write(progress_avio, buf_script.str,
1215                    FFMIN(buf_script.len, buf_script.size - 1));
1216         avio_flush(progress_avio);
1217         av_bprint_finalize(&buf_script, NULL);
1218         if (is_last_report) {
1219             avio_close(progress_avio);
1220             progress_avio = NULL;
1221         }
1222     }
1223
1224     if (is_last_report) {
1225         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1226         av_log(NULL, AV_LOG_INFO, "\n");
1227         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1228                video_size / 1024.0,
1229                audio_size / 1024.0,
1230                subtitle_size / 1024.0,
1231                extra_size / 1024.0,
1232                100.0 * (total_size - raw) / raw
1233         );
1234         if(video_size + audio_size + subtitle_size + extra_size == 0){
1235             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1236         }
1237     }
1238 }
1239
1240 static void flush_encoders(void)
1241 {
1242     int i, ret;
1243
1244     for (i = 0; i < nb_output_streams; i++) {
1245         OutputStream   *ost = output_streams[i];
1246         AVCodecContext *enc = ost->st->codec;
1247         AVFormatContext *os = output_files[ost->file_index]->ctx;
1248         int stop_encoding = 0;
1249
1250         if (!ost->encoding_needed)
1251             continue;
1252
1253         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1254             continue;
1255         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1256             continue;
1257
1258         for (;;) {
1259             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1260             const char *desc;
1261             int64_t *size;
1262
1263             switch (ost->st->codec->codec_type) {
1264             case AVMEDIA_TYPE_AUDIO:
1265                 encode = avcodec_encode_audio2;
1266                 desc   = "Audio";
1267                 size   = &audio_size;
1268                 break;
1269             case AVMEDIA_TYPE_VIDEO:
1270                 encode = avcodec_encode_video2;
1271                 desc   = "Video";
1272                 size   = &video_size;
1273                 break;
1274             default:
1275                 stop_encoding = 1;
1276             }
1277
1278             if (encode) {
1279                 AVPacket pkt;
1280                 int got_packet;
1281                 av_init_packet(&pkt);
1282                 pkt.data = NULL;
1283                 pkt.size = 0;
1284
1285                 update_benchmark(NULL);
1286                 ret = encode(enc, &pkt, NULL, &got_packet);
1287                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1288                 if (ret < 0) {
1289                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1290                     exit_program(1);
1291                 }
1292                 *size += pkt.size;
1293                 if (ost->logfile && enc->stats_out) {
1294                     fprintf(ost->logfile, "%s", enc->stats_out);
1295                 }
1296                 if (!got_packet) {
1297                     stop_encoding = 1;
1298                     break;
1299                 }
1300                 if (pkt.pts != AV_NOPTS_VALUE)
1301                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1302                 if (pkt.dts != AV_NOPTS_VALUE)
1303                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1304                 write_frame(os, &pkt, ost);
1305             }
1306
1307             if (stop_encoding)
1308                 break;
1309         }
1310     }
1311 }
1312
1313 /*
1314  * Check whether a packet from ist should be written into ost at this time
1315  */
1316 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1317 {
1318     OutputFile *of = output_files[ost->file_index];
1319     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1320
1321     if (ost->source_index != ist_index)
1322         return 0;
1323
1324     if (of->start_time && ist->pts < of->start_time)
1325         return 0;
1326
1327     return 1;
1328 }
1329
1330 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1331 {
1332     OutputFile *of = output_files[ost->file_index];
1333     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1334     AVPicture pict;
1335     AVPacket opkt;
1336
1337     av_init_packet(&opkt);
1338
1339     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1340         !ost->copy_initial_nonkeyframes)
1341         return;
1342
1343     if (of->recording_time != INT64_MAX &&
1344         ist->pts >= of->recording_time + of->start_time) {
1345         close_output_stream(ost);
1346         return;
1347     }
1348
1349     /* force the input stream PTS */
1350     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1351         audio_size += pkt->size;
1352     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1353         video_size += pkt->size;
1354         ost->sync_opts++;
1355     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1356         subtitle_size += pkt->size;
1357     }
1358
1359     if (pkt->pts != AV_NOPTS_VALUE)
1360         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1361     else
1362         opkt.pts = AV_NOPTS_VALUE;
1363
1364     if (pkt->dts == AV_NOPTS_VALUE)
1365         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1366     else
1367         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1368     opkt.dts -= ost_tb_start_time;
1369
1370     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1371     opkt.flags    = pkt->flags;
1372
1373     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1374     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1375        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1376        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1377        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1378        ) {
1379         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1380             opkt.destruct = av_destruct_packet;
1381     } else {
1382         opkt.data = pkt->data;
1383         opkt.size = pkt->size;
1384     }
1385
1386     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1387         /* store AVPicture in AVPacket, as expected by the output format */
1388         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1389         opkt.data = (uint8_t *)&pict;
1390         opkt.size = sizeof(AVPicture);
1391         opkt.flags |= AV_PKT_FLAG_KEY;
1392     }
1393
1394     write_frame(of->ctx, &opkt, ost);
1395     ost->st->codec->frame_number++;
1396     av_free_packet(&opkt);
1397 }
1398
1399 static void rate_emu_sleep(InputStream *ist)
1400 {
1401     if (input_files[ist->file_index]->rate_emu) {
1402         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
1403         int64_t now = av_gettime() - ist->start;
1404         if (pts > now)
1405             av_usleep(pts - now);
1406     }
1407 }
1408
1409 int guess_input_channel_layout(InputStream *ist)
1410 {
1411     AVCodecContext *dec = ist->st->codec;
1412
1413     if (!dec->channel_layout) {
1414         char layout_name[256];
1415
1416         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1417         if (!dec->channel_layout)
1418             return 0;
1419         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1420                                      dec->channels, dec->channel_layout);
1421         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1422                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1423     }
1424     return 1;
1425 }
1426
1427 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1428 {
1429     AVFrame *decoded_frame;
1430     AVCodecContext *avctx = ist->st->codec;
1431     int i, ret, resample_changed;
1432     AVRational decoded_frame_tb;
1433
1434     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1435         return AVERROR(ENOMEM);
1436     else
1437         avcodec_get_frame_defaults(ist->decoded_frame);
1438     decoded_frame = ist->decoded_frame;
1439
1440     update_benchmark(NULL);
1441     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1442     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1443
1444     if (ret >= 0 && avctx->sample_rate <= 0) {
1445         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1446         ret = AVERROR_INVALIDDATA;
1447     }
1448
1449     if (!*got_output || ret < 0) {
1450         if (!pkt->size) {
1451             for (i = 0; i < ist->nb_filters; i++)
1452                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1453         }
1454         return ret;
1455     }
1456
1457 #if 1
1458     /* increment next_dts to use for the case where the input stream does not
1459        have timestamps or there are multiple frames in the packet */
1460     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1461                      avctx->sample_rate;
1462     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1463                      avctx->sample_rate;
1464 #endif
1465
1466     rate_emu_sleep(ist);
1467
1468     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1469                        ist->resample_channels       != avctx->channels               ||
1470                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1471                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1472     if (resample_changed) {
1473         char layout1[64], layout2[64];
1474
1475         if (!guess_input_channel_layout(ist)) {
1476             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1477                    "layout for Input Stream #%d.%d\n", ist->file_index,
1478                    ist->st->index);
1479             exit_program(1);
1480         }
1481         decoded_frame->channel_layout = avctx->channel_layout;
1482
1483         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1484                                      ist->resample_channel_layout);
1485         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1486                                      decoded_frame->channel_layout);
1487
1488         av_log(NULL, AV_LOG_INFO,
1489                "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",
1490                ist->file_index, ist->st->index,
1491                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1492                ist->resample_channels, layout1,
1493                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1494                avctx->channels, layout2);
1495
1496         ist->resample_sample_fmt     = decoded_frame->format;
1497         ist->resample_sample_rate    = decoded_frame->sample_rate;
1498         ist->resample_channel_layout = decoded_frame->channel_layout;
1499         ist->resample_channels       = avctx->channels;
1500
1501         for (i = 0; i < nb_filtergraphs; i++)
1502             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1503                 FilterGraph *fg = filtergraphs[i];
1504                 int j;
1505                 if (configure_filtergraph(fg) < 0) {
1506                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1507                     exit_program(1);
1508                 }
1509                 for (j = 0; j < fg->nb_outputs; j++) {
1510                     OutputStream *ost = fg->outputs[j]->ost;
1511                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1512                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1513                         av_buffersink_set_frame_size(ost->filter->filter,
1514                                                      ost->st->codec->frame_size);
1515                 }
1516             }
1517     }
1518
1519     /* if the decoder provides a pts, use it instead of the last packet pts.
1520        the decoder could be delaying output by a packet or more. */
1521     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1522         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1523         decoded_frame_tb   = avctx->time_base;
1524     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1525         decoded_frame->pts = decoded_frame->pkt_pts;
1526         pkt->pts           = AV_NOPTS_VALUE;
1527         decoded_frame_tb   = ist->st->time_base;
1528     } else if (pkt->pts != AV_NOPTS_VALUE) {
1529         decoded_frame->pts = pkt->pts;
1530         pkt->pts           = AV_NOPTS_VALUE;
1531         decoded_frame_tb   = ist->st->time_base;
1532     }else {
1533         decoded_frame->pts = ist->dts;
1534         decoded_frame_tb   = AV_TIME_BASE_Q;
1535     }
1536     if (decoded_frame->pts != AV_NOPTS_VALUE)
1537         decoded_frame->pts = av_rescale_q(decoded_frame->pts,
1538                                           decoded_frame_tb,
1539                                           (AVRational){1, ist->st->codec->sample_rate});
1540     for (i = 0; i < ist->nb_filters; i++)
1541         av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame,
1542                                AV_BUFFERSRC_FLAG_PUSH);
1543
1544     decoded_frame->pts = AV_NOPTS_VALUE;
1545
1546     return ret;
1547 }
1548
1549 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1550 {
1551     AVFrame *decoded_frame;
1552     void *buffer_to_free = NULL;
1553     int i, ret = 0, resample_changed;
1554     int64_t best_effort_timestamp;
1555     AVRational *frame_sample_aspect;
1556     float quality;
1557
1558     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1559         return AVERROR(ENOMEM);
1560     else
1561         avcodec_get_frame_defaults(ist->decoded_frame);
1562     decoded_frame = ist->decoded_frame;
1563     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1564
1565     update_benchmark(NULL);
1566     ret = avcodec_decode_video2(ist->st->codec,
1567                                 decoded_frame, got_output, pkt);
1568     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1569     if (!*got_output || ret < 0) {
1570         if (!pkt->size) {
1571             for (i = 0; i < ist->nb_filters; i++)
1572                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1573         }
1574         return ret;
1575     }
1576
1577     quality = same_quant ? decoded_frame->quality : 0;
1578
1579     if(ist->top_field_first>=0)
1580         decoded_frame->top_field_first = ist->top_field_first;
1581
1582     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1583     if(best_effort_timestamp != AV_NOPTS_VALUE)
1584         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1585
1586     if (debug_ts) {
1587         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1588                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1589                 ist->st->index, av_ts2str(decoded_frame->pts),
1590                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1591                 best_effort_timestamp,
1592                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1593                 decoded_frame->key_frame, decoded_frame->pict_type);
1594     }
1595
1596     pkt->size = 0;
1597     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1598
1599     rate_emu_sleep(ist);
1600
1601     if (ist->st->sample_aspect_ratio.num)
1602         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1603
1604     resample_changed = ist->resample_width   != decoded_frame->width  ||
1605                        ist->resample_height  != decoded_frame->height ||
1606                        ist->resample_pix_fmt != decoded_frame->format;
1607     if (resample_changed) {
1608         av_log(NULL, AV_LOG_INFO,
1609                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1610                ist->file_index, ist->st->index,
1611                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1612                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1613
1614         ist->resample_width   = decoded_frame->width;
1615         ist->resample_height  = decoded_frame->height;
1616         ist->resample_pix_fmt = decoded_frame->format;
1617
1618         for (i = 0; i < nb_filtergraphs; i++)
1619             if (ist_in_filtergraph(filtergraphs[i], ist) &&
1620                 configure_filtergraph(filtergraphs[i]) < 0) {
1621                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1622                 exit_program(1);
1623             }
1624     }
1625
1626     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1627     for (i = 0; i < ist->nb_filters; i++) {
1628         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
1629                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
1630                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
1631         // XXX what an ugly hack
1632         if (ist->filters[i]->graph->nb_outputs == 1)
1633             ist->filters[i]->graph->outputs[0]->ost->last_quality = quality;
1634
1635         if (!frame_sample_aspect->num)
1636             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1637         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
1638             FrameBuffer      *buf = decoded_frame->opaque;
1639             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1640                                         decoded_frame->data, decoded_frame->linesize,
1641                                         AV_PERM_READ | AV_PERM_PRESERVE,
1642                                         ist->st->codec->width, ist->st->codec->height,
1643                                         ist->st->codec->pix_fmt);
1644
1645             avfilter_copy_frame_props(fb, decoded_frame);
1646             fb->buf->priv           = buf;
1647             fb->buf->free           = filter_release_buffer;
1648
1649             av_assert0(buf->refcount>0);
1650             buf->refcount++;
1651             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
1652                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
1653                                  AV_BUFFERSRC_FLAG_NO_COPY |
1654                                  AV_BUFFERSRC_FLAG_PUSH);
1655         } else
1656         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, AV_BUFFERSRC_FLAG_PUSH)<0) {
1657             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
1658             exit_program(1);
1659         }
1660
1661     }
1662
1663     av_free(buffer_to_free);
1664     return ret;
1665 }
1666
1667 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1668 {
1669     AVSubtitle subtitle;
1670     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1671                                           &subtitle, got_output, pkt);
1672     if (ret < 0 || !*got_output) {
1673         if (!pkt->size)
1674             sub2video_flush(ist);
1675         return ret;
1676     }
1677
1678     if (ist->fix_sub_duration) {
1679         if (ist->prev_sub.got_output) {
1680             int end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1681                                  1000, AV_TIME_BASE);
1682             if (end < ist->prev_sub.subtitle.end_display_time) {
1683                 av_log(ist->st->codec, AV_LOG_DEBUG,
1684                        "Subtitle duration reduced from %d to %d\n",
1685                        ist->prev_sub.subtitle.end_display_time, end);
1686                 ist->prev_sub.subtitle.end_display_time = end;
1687             }
1688         }
1689         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1690         FFSWAP(int,        ret,         ist->prev_sub.ret);
1691         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1692     }
1693
1694     sub2video_update(ist, &subtitle);
1695
1696     if (!*got_output || !subtitle.num_rects)
1697         return ret;
1698
1699     rate_emu_sleep(ist);
1700
1701     for (i = 0; i < nb_output_streams; i++) {
1702         OutputStream *ost = output_streams[i];
1703
1704         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1705             continue;
1706
1707         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
1708     }
1709
1710     avsubtitle_free(&subtitle);
1711     return ret;
1712 }
1713
1714 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1715 static int output_packet(InputStream *ist, const AVPacket *pkt)
1716 {
1717     int ret = 0, i;
1718     int got_output;
1719
1720     AVPacket avpkt;
1721     if (!ist->saw_first_ts) {
1722         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;
1723         ist->pts = 0;
1724         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1725             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1726             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1727         }
1728         ist->saw_first_ts = 1;
1729     }
1730
1731     if (ist->next_dts == AV_NOPTS_VALUE)
1732         ist->next_dts = ist->dts;
1733     if (ist->next_pts == AV_NOPTS_VALUE)
1734         ist->next_pts = ist->pts;
1735
1736     if (pkt == NULL) {
1737         /* EOF handling */
1738         av_init_packet(&avpkt);
1739         avpkt.data = NULL;
1740         avpkt.size = 0;
1741         goto handle_eof;
1742     } else {
1743         avpkt = *pkt;
1744     }
1745
1746     if (pkt->dts != AV_NOPTS_VALUE) {
1747         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1748         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1749             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1750     }
1751
1752     // while we have more to decode or while the decoder did output something on EOF
1753     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1754         int duration;
1755     handle_eof:
1756
1757         ist->pts = ist->next_pts;
1758         ist->dts = ist->next_dts;
1759
1760         if (avpkt.size && avpkt.size != pkt->size) {
1761             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1762                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1763             ist->showed_multi_packet_warning = 1;
1764         }
1765
1766         switch (ist->st->codec->codec_type) {
1767         case AVMEDIA_TYPE_AUDIO:
1768             ret = decode_audio    (ist, &avpkt, &got_output);
1769             break;
1770         case AVMEDIA_TYPE_VIDEO:
1771             ret = decode_video    (ist, &avpkt, &got_output);
1772             if (avpkt.duration) {
1773                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1774             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1775                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1776                 duration = ((int64_t)AV_TIME_BASE *
1777                                 ist->st->codec->time_base.num * ticks) /
1778                                 ist->st->codec->time_base.den;
1779             } else
1780                 duration = 0;
1781
1782             if(ist->dts != AV_NOPTS_VALUE && duration) {
1783                 ist->next_dts += duration;
1784             }else
1785                 ist->next_dts = AV_NOPTS_VALUE;
1786
1787             if (got_output)
1788                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1789             break;
1790         case AVMEDIA_TYPE_SUBTITLE:
1791             ret = transcode_subtitles(ist, &avpkt, &got_output);
1792             break;
1793         default:
1794             return -1;
1795         }
1796
1797         if (ret < 0)
1798             return ret;
1799
1800         avpkt.dts=
1801         avpkt.pts= AV_NOPTS_VALUE;
1802
1803         // touch data and size only if not EOF
1804         if (pkt) {
1805             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1806                 ret = avpkt.size;
1807             avpkt.data += ret;
1808             avpkt.size -= ret;
1809         }
1810         if (!got_output) {
1811             continue;
1812         }
1813     }
1814
1815     /* handle stream copy */
1816     if (!ist->decoding_needed) {
1817         rate_emu_sleep(ist);
1818         ist->dts = ist->next_dts;
1819         switch (ist->st->codec->codec_type) {
1820         case AVMEDIA_TYPE_AUDIO:
1821             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1822                              ist->st->codec->sample_rate;
1823             break;
1824         case AVMEDIA_TYPE_VIDEO:
1825             if (pkt->duration) {
1826                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1827             } else if(ist->st->codec->time_base.num != 0) {
1828                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1829                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1830                                   ist->st->codec->time_base.num * ticks) /
1831                                   ist->st->codec->time_base.den;
1832             }
1833             break;
1834         }
1835         ist->pts = ist->dts;
1836         ist->next_pts = ist->next_dts;
1837     }
1838     for (i = 0; pkt && i < nb_output_streams; i++) {
1839         OutputStream *ost = output_streams[i];
1840
1841         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1842             continue;
1843
1844         do_streamcopy(ist, ost, pkt);
1845     }
1846
1847     return 0;
1848 }
1849
1850 static void print_sdp(void)
1851 {
1852     char sdp[2048];
1853     int i;
1854     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1855
1856     if (!avc)
1857         exit_program(1);
1858     for (i = 0; i < nb_output_files; i++)
1859         avc[i] = output_files[i]->ctx;
1860
1861     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1862     printf("SDP:\n%s\n", sdp);
1863     fflush(stdout);
1864     av_freep(&avc);
1865 }
1866
1867 static int init_input_stream(int ist_index, char *error, int error_len)
1868 {
1869     InputStream *ist = input_streams[ist_index];
1870
1871     if (ist->decoding_needed) {
1872         AVCodec *codec = ist->dec;
1873         if (!codec) {
1874             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1875                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1876             return AVERROR(EINVAL);
1877         }
1878
1879         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
1880         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
1881             ist->st->codec->get_buffer     = codec_get_buffer;
1882             ist->st->codec->release_buffer = codec_release_buffer;
1883             ist->st->codec->opaque         = &ist->buffer_pool;
1884         }
1885
1886         if (!av_dict_get(ist->opts, "threads", NULL, 0))
1887             av_dict_set(&ist->opts, "threads", "auto", 0);
1888         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
1889             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1890                     ist->file_index, ist->st->index);
1891             return AVERROR(EINVAL);
1892         }
1893         assert_codec_experimental(ist->st->codec, 0);
1894         assert_avoptions(ist->opts);
1895     }
1896
1897     ist->next_pts = AV_NOPTS_VALUE;
1898     ist->next_dts = AV_NOPTS_VALUE;
1899     ist->is_start = 1;
1900
1901     return 0;
1902 }
1903
1904 static InputStream *get_input_stream(OutputStream *ost)
1905 {
1906     if (ost->source_index >= 0)
1907         return input_streams[ost->source_index];
1908     return NULL;
1909 }
1910
1911 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1912                                     AVCodecContext *avctx)
1913 {
1914     char *p;
1915     int n = 1, i;
1916     int64_t t;
1917
1918     for (p = kf; *p; p++)
1919         if (*p == ',')
1920             n++;
1921     ost->forced_kf_count = n;
1922     ost->forced_kf_pts   = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1923     if (!ost->forced_kf_pts) {
1924         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1925         exit_program(1);
1926     }
1927
1928     p = kf;
1929     for (i = 0; i < n; i++) {
1930         char *next = strchr(p, ',');
1931
1932         if (next)
1933             *next++ = 0;
1934
1935         t = parse_time_or_die("force_key_frames", p, 1);
1936         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1937
1938         p = next;
1939     }
1940 }
1941
1942 static void report_new_stream(int input_index, AVPacket *pkt)
1943 {
1944     InputFile *file = input_files[input_index];
1945     AVStream *st = file->ctx->streams[pkt->stream_index];
1946
1947     if (pkt->stream_index < file->nb_streams_warn)
1948         return;
1949     av_log(file->ctx, AV_LOG_WARNING,
1950            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
1951            av_get_media_type_string(st->codec->codec_type),
1952            input_index, pkt->stream_index,
1953            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
1954     file->nb_streams_warn = pkt->stream_index + 1;
1955 }
1956
1957 static int transcode_init(void)
1958 {
1959     int ret = 0, i, j, k;
1960     AVFormatContext *oc;
1961     AVCodecContext *codec;
1962     OutputStream *ost;
1963     InputStream *ist;
1964     char error[1024];
1965     int want_sdp = 1;
1966
1967     /* init framerate emulation */
1968     for (i = 0; i < nb_input_files; i++) {
1969         InputFile *ifile = input_files[i];
1970         if (ifile->rate_emu)
1971             for (j = 0; j < ifile->nb_streams; j++)
1972                 input_streams[j + ifile->ist_index]->start = av_gettime();
1973     }
1974
1975     /* output stream init */
1976     for (i = 0; i < nb_output_files; i++) {
1977         oc = output_files[i]->ctx;
1978         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
1979             av_dump_format(oc, i, oc->filename, 1);
1980             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
1981             return AVERROR(EINVAL);
1982         }
1983     }
1984
1985     /* init complex filtergraphs */
1986     for (i = 0; i < nb_filtergraphs; i++)
1987         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
1988             return ret;
1989
1990     /* for each output stream, we compute the right encoding parameters */
1991     for (i = 0; i < nb_output_streams; i++) {
1992         AVCodecContext *icodec = NULL;
1993         ost = output_streams[i];
1994         oc  = output_files[ost->file_index]->ctx;
1995         ist = get_input_stream(ost);
1996
1997         if (ost->attachment_filename)
1998             continue;
1999
2000         codec  = ost->st->codec;
2001
2002         if (ist) {
2003             icodec = ist->st->codec;
2004
2005             ost->st->disposition          = ist->st->disposition;
2006             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2007             codec->chroma_sample_location = icodec->chroma_sample_location;
2008         }
2009
2010         if (ost->stream_copy) {
2011             uint64_t extra_size;
2012
2013             av_assert0(ist && !ost->filter);
2014
2015             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2016
2017             if (extra_size > INT_MAX) {
2018                 return AVERROR(EINVAL);
2019             }
2020
2021             /* if stream_copy is selected, no need to decode or encode */
2022             codec->codec_id   = icodec->codec_id;
2023             codec->codec_type = icodec->codec_type;
2024
2025             if (!codec->codec_tag) {
2026                 if (!oc->oformat->codec_tag ||
2027                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2028                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2029                     codec->codec_tag = icodec->codec_tag;
2030             }
2031
2032             codec->bit_rate       = icodec->bit_rate;
2033             codec->rc_max_rate    = icodec->rc_max_rate;
2034             codec->rc_buffer_size = icodec->rc_buffer_size;
2035             codec->field_order    = icodec->field_order;
2036             codec->extradata      = av_mallocz(extra_size);
2037             if (!codec->extradata) {
2038                 return AVERROR(ENOMEM);
2039             }
2040             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2041             codec->extradata_size= icodec->extradata_size;
2042             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2043
2044             codec->time_base = ist->st->time_base;
2045             /*
2046              * Avi is a special case here because it supports variable fps but
2047              * having the fps and timebase differe significantly adds quite some
2048              * overhead
2049              */
2050             if(!strcmp(oc->oformat->name, "avi")) {
2051                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2052                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2053                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2054                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2055                      || copy_tb==2){
2056                     codec->time_base.num = ist->st->r_frame_rate.den;
2057                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2058                     codec->ticks_per_frame = 2;
2059                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2060                                  && av_q2d(ist->st->time_base) < 1.0/500
2061                     || copy_tb==0){
2062                     codec->time_base = icodec->time_base;
2063                     codec->time_base.num *= icodec->ticks_per_frame;
2064                     codec->time_base.den *= 2;
2065                     codec->ticks_per_frame = 2;
2066                 }
2067             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2068                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2069                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2070                       && strcmp(oc->oformat->name, "f4v")
2071             ) {
2072                 if(   copy_tb<0 && icodec->time_base.den
2073                                 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2074                                 && av_q2d(ist->st->time_base) < 1.0/500
2075                    || copy_tb==0){
2076                     codec->time_base = icodec->time_base;
2077                     codec->time_base.num *= icodec->ticks_per_frame;
2078                 }
2079             }
2080
2081             if(ost->frame_rate.num)
2082                 codec->time_base = av_inv_q(ost->frame_rate);
2083
2084             av_reduce(&codec->time_base.num, &codec->time_base.den,
2085                         codec->time_base.num, codec->time_base.den, INT_MAX);
2086
2087             switch (codec->codec_type) {
2088             case AVMEDIA_TYPE_AUDIO:
2089                 if (audio_volume != 256) {
2090                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2091                     exit_program(1);
2092                 }
2093                 codec->channel_layout     = icodec->channel_layout;
2094                 codec->sample_rate        = icodec->sample_rate;
2095                 codec->channels           = icodec->channels;
2096                 codec->frame_size         = icodec->frame_size;
2097                 codec->audio_service_type = icodec->audio_service_type;
2098                 codec->block_align        = icodec->block_align;
2099                 if((codec->block_align == 1 || codec->block_align == 1152) && codec->codec_id == AV_CODEC_ID_MP3)
2100                     codec->block_align= 0;
2101                 if(codec->codec_id == AV_CODEC_ID_AC3)
2102                     codec->block_align= 0;
2103                 break;
2104             case AVMEDIA_TYPE_VIDEO:
2105                 codec->pix_fmt            = icodec->pix_fmt;
2106                 codec->width              = icodec->width;
2107                 codec->height             = icodec->height;
2108                 codec->has_b_frames       = icodec->has_b_frames;
2109                 if (!codec->sample_aspect_ratio.num) {
2110                     codec->sample_aspect_ratio   =
2111                     ost->st->sample_aspect_ratio =
2112                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2113                         ist->st->codec->sample_aspect_ratio.num ?
2114                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2115                 }
2116                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2117                 break;
2118             case AVMEDIA_TYPE_SUBTITLE:
2119                 codec->width  = icodec->width;
2120                 codec->height = icodec->height;
2121                 break;
2122             case AVMEDIA_TYPE_DATA:
2123             case AVMEDIA_TYPE_ATTACHMENT:
2124                 break;
2125             default:
2126                 abort();
2127             }
2128         } else {
2129             if (!ost->enc)
2130                 ost->enc = avcodec_find_encoder(codec->codec_id);
2131             if (!ost->enc) {
2132                 /* should only happen when a default codec is not present. */
2133                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2134                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2135                 ret = AVERROR(EINVAL);
2136                 goto dump_format;
2137             }
2138
2139             if (ist)
2140                 ist->decoding_needed++;
2141             ost->encoding_needed = 1;
2142
2143             if (!ost->filter &&
2144                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2145                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2146                     FilterGraph *fg;
2147                     fg = init_simple_filtergraph(ist, ost);
2148                     if (configure_filtergraph(fg)) {
2149                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2150                         exit(1);
2151                     }
2152             }
2153
2154             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2155                 if (ost->filter && !ost->frame_rate.num)
2156                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2157                 if (ist && !ost->frame_rate.num)
2158                     ost->frame_rate = ist->framerate;
2159                 if (ist && !ost->frame_rate.num)
2160                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2161 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2162                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2163                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2164                     ost->frame_rate = ost->enc->supported_framerates[idx];
2165                 }
2166             }
2167
2168             switch (codec->codec_type) {
2169             case AVMEDIA_TYPE_AUDIO:
2170                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2171                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2172                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2173                 codec->channels       = av_get_channel_layout_nb_channels(codec->channel_layout);
2174                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2175                 break;
2176             case AVMEDIA_TYPE_VIDEO:
2177                 codec->time_base = av_inv_q(ost->frame_rate);
2178                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2179                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2180                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2181                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2182                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2183                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2184                 }
2185                 for (j = 0; j < ost->forced_kf_count; j++)
2186                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2187                                                          AV_TIME_BASE_Q,
2188                                                          codec->time_base);
2189
2190                 codec->width  = ost->filter->filter->inputs[0]->w;
2191                 codec->height = ost->filter->filter->inputs[0]->h;
2192                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2193                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
2194                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
2195                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2196                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2197
2198                 if (!icodec ||
2199                     codec->width   != icodec->width  ||
2200                     codec->height  != icodec->height ||
2201                     codec->pix_fmt != icodec->pix_fmt) {
2202                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2203                 }
2204
2205                 if (ost->forced_keyframes)
2206                     parse_forced_key_frames(ost->forced_keyframes, ost,
2207                                             ost->st->codec);
2208                 break;
2209             case AVMEDIA_TYPE_SUBTITLE:
2210                 codec->time_base = (AVRational){1, 1000};
2211                 if (!codec->width) {
2212                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2213                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2214                 }
2215                 break;
2216             default:
2217                 abort();
2218                 break;
2219             }
2220             /* two pass mode */
2221             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2222                 char logfilename[1024];
2223                 FILE *f;
2224
2225                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2226                          ost->logfile_prefix ? ost->logfile_prefix :
2227                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2228                          i);
2229                 if (!strcmp(ost->enc->name, "libx264")) {
2230                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2231                 } else {
2232                     if (codec->flags & CODEC_FLAG_PASS2) {
2233                         char  *logbuffer;
2234                         size_t logbuffer_size;
2235                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2236                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2237                                    logfilename);
2238                             exit_program(1);
2239                         }
2240                         codec->stats_in = logbuffer;
2241                     }
2242                     if (codec->flags & CODEC_FLAG_PASS1) {
2243                         f = fopen(logfilename, "wb");
2244                         if (!f) {
2245                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2246                                 logfilename, strerror(errno));
2247                             exit_program(1);
2248                         }
2249                         ost->logfile = f;
2250                     }
2251                 }
2252             }
2253         }
2254     }
2255
2256     /* open each encoder */
2257     for (i = 0; i < nb_output_streams; i++) {
2258         ost = output_streams[i];
2259         if (ost->encoding_needed) {
2260             AVCodec      *codec = ost->enc;
2261             AVCodecContext *dec = NULL;
2262
2263             if ((ist = get_input_stream(ost)))
2264                 dec = ist->st->codec;
2265             if (dec && dec->subtitle_header) {
2266                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2267                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2268                 if (!ost->st->codec->subtitle_header) {
2269                     ret = AVERROR(ENOMEM);
2270                     goto dump_format;
2271                 }
2272                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2273                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2274             }
2275             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2276                 av_dict_set(&ost->opts, "threads", "auto", 0);
2277             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2278                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2279                         ost->file_index, ost->index);
2280                 ret = AVERROR(EINVAL);
2281                 goto dump_format;
2282             }
2283             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2284                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2285                 av_buffersink_set_frame_size(ost->filter->filter,
2286                                              ost->st->codec->frame_size);
2287             assert_codec_experimental(ost->st->codec, 1);
2288             assert_avoptions(ost->opts);
2289             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2290                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2291                                              " It takes bits/s as argument, not kbits/s\n");
2292             extra_size += ost->st->codec->extradata_size;
2293
2294             if (ost->st->codec->me_threshold)
2295                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
2296         }
2297     }
2298
2299     /* init input streams */
2300     for (i = 0; i < nb_input_streams; i++)
2301         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
2302             goto dump_format;
2303
2304     /* discard unused programs */
2305     for (i = 0; i < nb_input_files; i++) {
2306         InputFile *ifile = input_files[i];
2307         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2308             AVProgram *p = ifile->ctx->programs[j];
2309             int discard  = AVDISCARD_ALL;
2310
2311             for (k = 0; k < p->nb_stream_indexes; k++)
2312                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2313                     discard = AVDISCARD_DEFAULT;
2314                     break;
2315                 }
2316             p->discard = discard;
2317         }
2318     }
2319
2320     /* open files and write file headers */
2321     for (i = 0; i < nb_output_files; i++) {
2322         oc = output_files[i]->ctx;
2323         oc->interrupt_callback = int_cb;
2324         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2325             char errbuf[128];
2326             const char *errbuf_ptr = errbuf;
2327             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
2328                 errbuf_ptr = strerror(AVUNERROR(ret));
2329             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
2330             ret = AVERROR(EINVAL);
2331             goto dump_format;
2332         }
2333 //         assert_avoptions(output_files[i]->opts);
2334         if (strcmp(oc->oformat->name, "rtp")) {
2335             want_sdp = 0;
2336         }
2337     }
2338
2339  dump_format:
2340     /* dump the file output parameters - cannot be done before in case
2341        of stream copy */
2342     for (i = 0; i < nb_output_files; i++) {
2343         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2344     }
2345
2346     /* dump the stream mapping */
2347     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2348     for (i = 0; i < nb_input_streams; i++) {
2349         ist = input_streams[i];
2350
2351         for (j = 0; j < ist->nb_filters; j++) {
2352             if (ist->filters[j]->graph->graph_desc) {
2353                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2354                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2355                        ist->filters[j]->name);
2356                 if (nb_filtergraphs > 1)
2357                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2358                 av_log(NULL, AV_LOG_INFO, "\n");
2359             }
2360         }
2361     }
2362
2363     for (i = 0; i < nb_output_streams; i++) {
2364         ost = output_streams[i];
2365
2366         if (ost->attachment_filename) {
2367             /* an attached file */
2368             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2369                    ost->attachment_filename, ost->file_index, ost->index);
2370             continue;
2371         }
2372
2373         if (ost->filter && ost->filter->graph->graph_desc) {
2374             /* output from a complex graph */
2375             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2376             if (nb_filtergraphs > 1)
2377                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2378
2379             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2380                    ost->index, ost->enc ? ost->enc->name : "?");
2381             continue;
2382         }
2383
2384         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2385                input_streams[ost->source_index]->file_index,
2386                input_streams[ost->source_index]->st->index,
2387                ost->file_index,
2388                ost->index);
2389         if (ost->sync_ist != input_streams[ost->source_index])
2390             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2391                    ost->sync_ist->file_index,
2392                    ost->sync_ist->st->index);
2393         if (ost->stream_copy)
2394             av_log(NULL, AV_LOG_INFO, " (copy)");
2395         else
2396             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2397                    input_streams[ost->source_index]->dec->name : "?",
2398                    ost->enc ? ost->enc->name : "?");
2399         av_log(NULL, AV_LOG_INFO, "\n");
2400     }
2401
2402     if (ret) {
2403         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2404         return ret;
2405     }
2406
2407     if (want_sdp) {
2408         print_sdp();
2409     }
2410
2411     return 0;
2412 }
2413
2414 /**
2415  * @return 1 if there are still streams where more output is wanted,
2416  *         0 otherwise
2417  */
2418 static int need_output(void)
2419 {
2420     int i;
2421
2422     for (i = 0; i < nb_output_streams; i++) {
2423         OutputStream *ost    = output_streams[i];
2424         OutputFile *of       = output_files[ost->file_index];
2425         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2426
2427         if (ost->finished ||
2428             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2429             continue;
2430         if (ost->frame_number >= ost->max_frames) {
2431             int j;
2432             for (j = 0; j < of->ctx->nb_streams; j++)
2433                 close_output_stream(output_streams[of->ost_index + j]);
2434             continue;
2435         }
2436
2437         return 1;
2438     }
2439
2440     return 0;
2441 }
2442
2443 /**
2444  * Select the output stream to process.
2445  *
2446  * @return  selected output stream, or NULL if none available
2447  */
2448 static OutputStream *choose_output(void)
2449 {
2450     int i;
2451     int64_t opts_min = INT64_MAX;
2452     OutputStream *ost_min = NULL;
2453
2454     for (i = 0; i < nb_output_streams; i++) {
2455         OutputStream *ost = output_streams[i];
2456         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2457                                     AV_TIME_BASE_Q);
2458         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2459             opts_min = opts;
2460             ost_min  = ost;
2461         }
2462     }
2463     return ost_min;
2464 }
2465
2466 static int check_keyboard_interaction(int64_t cur_time)
2467 {
2468     int i, ret, key;
2469     static int64_t last_time;
2470     if (received_nb_signals)
2471         return AVERROR_EXIT;
2472     /* read_key() returns 0 on EOF */
2473     if(cur_time - last_time >= 100000 && !run_as_daemon){
2474         key =  read_key();
2475         last_time = cur_time;
2476     }else
2477         key = -1;
2478     if (key == 'q')
2479         return AVERROR_EXIT;
2480     if (key == '+') av_log_set_level(av_log_get_level()+10);
2481     if (key == '-') av_log_set_level(av_log_get_level()-10);
2482     if (key == 's') qp_hist     ^= 1;
2483     if (key == 'h'){
2484         if (do_hex_dump){
2485             do_hex_dump = do_pkt_dump = 0;
2486         } else if(do_pkt_dump){
2487             do_hex_dump = 1;
2488         } else
2489             do_pkt_dump = 1;
2490         av_log_set_level(AV_LOG_DEBUG);
2491     }
2492     if (key == 'c' || key == 'C'){
2493         char buf[4096], target[64], command[256], arg[256] = {0};
2494         double time;
2495         int k, n = 0;
2496         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2497         i = 0;
2498         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2499             if (k > 0)
2500                 buf[i++] = k;
2501         buf[i] = 0;
2502         if (k > 0 &&
2503             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2504             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2505                    target, time, command, arg);
2506             for (i = 0; i < nb_filtergraphs; i++) {
2507                 FilterGraph *fg = filtergraphs[i];
2508                 if (fg->graph) {
2509                     if (time < 0) {
2510                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2511                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2512                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2513                     } else {
2514                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2515                     }
2516                 }
2517             }
2518         } else {
2519             av_log(NULL, AV_LOG_ERROR,
2520                    "Parse error, at least 3 arguments were expected, "
2521                    "only %d given in string '%s'\n", n, buf);
2522         }
2523     }
2524     if (key == 'd' || key == 'D'){
2525         int debug=0;
2526         if(key == 'D') {
2527             debug = input_streams[0]->st->codec->debug<<1;
2528             if(!debug) debug = 1;
2529             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2530                 debug += debug;
2531         }else
2532             if(scanf("%d", &debug)!=1)
2533                 fprintf(stderr,"error parsing debug value\n");
2534         for(i=0;i<nb_input_streams;i++) {
2535             input_streams[i]->st->codec->debug = debug;
2536         }
2537         for(i=0;i<nb_output_streams;i++) {
2538             OutputStream *ost = output_streams[i];
2539             ost->st->codec->debug = debug;
2540         }
2541         if(debug) av_log_set_level(AV_LOG_DEBUG);
2542         fprintf(stderr,"debug=%d\n", debug);
2543     }
2544     if (key == '?'){
2545         fprintf(stderr, "key    function\n"
2546                         "?      show this help\n"
2547                         "+      increase verbosity\n"
2548                         "-      decrease verbosity\n"
2549                         "c      Send command to filtergraph\n"
2550                         "D      cycle through available debug modes\n"
2551                         "h      dump packets/hex press to cycle through the 3 states\n"
2552                         "q      quit\n"
2553                         "s      Show QP histogram\n"
2554         );
2555     }
2556     return 0;
2557 }
2558
2559 #if HAVE_PTHREADS
2560 static void *input_thread(void *arg)
2561 {
2562     InputFile *f = arg;
2563     int ret = 0;
2564
2565     while (!transcoding_finished && ret >= 0) {
2566         AVPacket pkt;
2567         ret = av_read_frame(f->ctx, &pkt);
2568
2569         if (ret == AVERROR(EAGAIN)) {
2570             av_usleep(10000);
2571             ret = 0;
2572             continue;
2573         } else if (ret < 0)
2574             break;
2575
2576         pthread_mutex_lock(&f->fifo_lock);
2577         while (!av_fifo_space(f->fifo))
2578             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2579
2580         av_dup_packet(&pkt);
2581         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2582
2583         pthread_mutex_unlock(&f->fifo_lock);
2584     }
2585
2586     f->finished = 1;
2587     return NULL;
2588 }
2589
2590 static void free_input_threads(void)
2591 {
2592     int i;
2593
2594     if (nb_input_files == 1)
2595         return;
2596
2597     transcoding_finished = 1;
2598
2599     for (i = 0; i < nb_input_files; i++) {
2600         InputFile *f = input_files[i];
2601         AVPacket pkt;
2602
2603         if (!f->fifo || f->joined)
2604             continue;
2605
2606         pthread_mutex_lock(&f->fifo_lock);
2607         while (av_fifo_size(f->fifo)) {
2608             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2609             av_free_packet(&pkt);
2610         }
2611         pthread_cond_signal(&f->fifo_cond);
2612         pthread_mutex_unlock(&f->fifo_lock);
2613
2614         pthread_join(f->thread, NULL);
2615         f->joined = 1;
2616
2617         while (av_fifo_size(f->fifo)) {
2618             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2619             av_free_packet(&pkt);
2620         }
2621         av_fifo_free(f->fifo);
2622     }
2623 }
2624
2625 static int init_input_threads(void)
2626 {
2627     int i, ret;
2628
2629     if (nb_input_files == 1)
2630         return 0;
2631
2632     for (i = 0; i < nb_input_files; i++) {
2633         InputFile *f = input_files[i];
2634
2635         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2636             return AVERROR(ENOMEM);
2637
2638         pthread_mutex_init(&f->fifo_lock, NULL);
2639         pthread_cond_init (&f->fifo_cond, NULL);
2640
2641         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2642             return AVERROR(ret);
2643     }
2644     return 0;
2645 }
2646
2647 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2648 {
2649     int ret = 0;
2650
2651     pthread_mutex_lock(&f->fifo_lock);
2652
2653     if (av_fifo_size(f->fifo)) {
2654         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2655         pthread_cond_signal(&f->fifo_cond);
2656     } else {
2657         if (f->finished)
2658             ret = AVERROR_EOF;
2659         else
2660             ret = AVERROR(EAGAIN);
2661     }
2662
2663     pthread_mutex_unlock(&f->fifo_lock);
2664
2665     return ret;
2666 }
2667 #endif
2668
2669 static int get_input_packet(InputFile *f, AVPacket *pkt)
2670 {
2671 #if HAVE_PTHREADS
2672     if (nb_input_files > 1)
2673         return get_input_packet_mt(f, pkt);
2674 #endif
2675     return av_read_frame(f->ctx, pkt);
2676 }
2677
2678 static int got_eagain(void)
2679 {
2680     int i;
2681     for (i = 0; i < nb_output_streams; i++)
2682         if (output_streams[i]->unavailable)
2683             return 1;
2684     return 0;
2685 }
2686
2687 static void reset_eagain(void)
2688 {
2689     int i;
2690     for (i = 0; i < nb_input_files; i++)
2691         input_files[i]->eagain = 0;
2692     for (i = 0; i < nb_output_streams; i++)
2693         output_streams[i]->unavailable = 0;
2694 }
2695
2696 /**
2697  * @return
2698  * - 0 -- one packet was read and processed
2699  * - AVERROR(EAGAIN) -- no packets were available for selected file,
2700  *   this function should be called again
2701  * - AVERROR_EOF -- this function should not be called again
2702  */
2703 static int process_input(int file_index)
2704 {
2705     InputFile *ifile = input_files[file_index];
2706     AVFormatContext *is;
2707     InputStream *ist;
2708     AVPacket pkt;
2709     int ret, i, j;
2710
2711     is  = ifile->ctx;
2712     ret = get_input_packet(ifile, &pkt);
2713
2714     if (ret == AVERROR(EAGAIN)) {
2715         ifile->eagain = 1;
2716         return ret;
2717     }
2718     if (ret < 0) {
2719         if (ret != AVERROR_EOF) {
2720             print_error(is->filename, ret);
2721             if (exit_on_error)
2722                 exit_program(1);
2723         }
2724         ifile->eof_reached = 1;
2725
2726         for (i = 0; i < ifile->nb_streams; i++) {
2727             ist = input_streams[ifile->ist_index + i];
2728             if (ist->decoding_needed)
2729                 output_packet(ist, NULL);
2730
2731             /* mark all outputs that don't go through lavfi as finished */
2732             for (j = 0; j < nb_output_streams; j++) {
2733                 OutputStream *ost = output_streams[j];
2734
2735                 if (ost->source_index == ifile->ist_index + i &&
2736                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2737                     close_output_stream(ost);
2738             }
2739         }
2740
2741         return AVERROR(EAGAIN);
2742     }
2743
2744     reset_eagain();
2745
2746     if (do_pkt_dump) {
2747         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2748                          is->streams[pkt.stream_index]);
2749     }
2750     /* the following test is needed in case new streams appear
2751        dynamically in stream : we ignore them */
2752     if (pkt.stream_index >= ifile->nb_streams) {
2753         report_new_stream(file_index, &pkt);
2754         goto discard_packet;
2755     }
2756
2757     ist = input_streams[ifile->ist_index + pkt.stream_index];
2758     if (ist->discard)
2759         goto discard_packet;
2760
2761     if(!ist->wrap_correction_done && input_files[file_index]->ctx->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
2762         int64_t stime = av_rescale_q(input_files[file_index]->ctx->start_time, AV_TIME_BASE_Q, ist->st->time_base);
2763         int64_t stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
2764         ist->wrap_correction_done = 1;
2765
2766         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2767             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
2768             ist->wrap_correction_done = 0;
2769         }
2770         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2771             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
2772             ist->wrap_correction_done = 0;
2773         }
2774     }
2775
2776     if (pkt.dts != AV_NOPTS_VALUE)
2777         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2778     if (pkt.pts != AV_NOPTS_VALUE)
2779         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2780
2781     if (pkt.pts != AV_NOPTS_VALUE)
2782         pkt.pts *= ist->ts_scale;
2783     if (pkt.dts != AV_NOPTS_VALUE)
2784         pkt.dts *= ist->ts_scale;
2785
2786     if (debug_ts) {
2787         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
2788                 "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",
2789                 ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2790                 av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
2791                 av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
2792                 av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2793                 av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2794                 input_files[ist->file_index]->ts_offset);
2795     }
2796
2797     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2798         !copy_ts) {
2799         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2800         int64_t delta   = pkt_dts - ist->next_dts;
2801         if (is->iformat->flags & AVFMT_TS_DISCONT) {
2802         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2803             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2804                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2805             pkt_dts+1<ist->pts){
2806             ifile->ts_offset -= delta;
2807             av_log(NULL, AV_LOG_DEBUG,
2808                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2809                    delta, ifile->ts_offset);
2810             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2811             if (pkt.pts != AV_NOPTS_VALUE)
2812                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2813         }
2814         } else {
2815             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2816                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2817                ) {
2818                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
2819                 pkt.dts = AV_NOPTS_VALUE;
2820             }
2821             if (pkt.pts != AV_NOPTS_VALUE){
2822                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
2823                 delta   = pkt_pts - ist->next_dts;
2824                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2825                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2826                    ) {
2827                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
2828                     pkt.pts = AV_NOPTS_VALUE;
2829                 }
2830             }
2831         }
2832     }
2833
2834     sub2video_heartbeat(ist, pkt.pts);
2835
2836     ret = output_packet(ist, &pkt);
2837     if (ret < 0) {
2838         char buf[128];
2839         av_strerror(ret, buf, sizeof(buf));
2840         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
2841                 ist->file_index, ist->st->index, buf);
2842         if (exit_on_error)
2843             exit_program(1);
2844     }
2845
2846 discard_packet:
2847     av_free_packet(&pkt);
2848
2849     return 0;
2850 }
2851
2852 /**
2853  * Perform a step of transcoding for the specified filter graph.
2854  *
2855  * @param[in]  graph     filter graph to consider
2856  * @param[out] best_ist  input stream where a frame would allow to continue
2857  * @return  0 for success, <0 for error
2858  */
2859 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
2860 {
2861     int i, ret;
2862     int nb_requests, nb_requests_max = 0;
2863     InputFilter *ifilter;
2864     InputStream *ist;
2865
2866     *best_ist = NULL;
2867     ret = avfilter_graph_request_oldest(graph->graph);
2868     if (ret >= 0)
2869         return reap_filters();
2870
2871     if (ret == AVERROR_EOF) {
2872         ret = reap_filters();
2873         for (i = 0; i < graph->nb_outputs; i++)
2874             close_output_stream(graph->outputs[i]->ost);
2875         return ret;
2876     }
2877     if (ret != AVERROR(EAGAIN))
2878         return ret;
2879
2880     for (i = 0; i < graph->nb_inputs; i++) {
2881         ifilter = graph->inputs[i];
2882         ist = ifilter->ist;
2883         if (input_files[ist->file_index]->eagain ||
2884             input_files[ist->file_index]->eof_reached)
2885             continue;
2886         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
2887         if (nb_requests > nb_requests_max) {
2888             nb_requests_max = nb_requests;
2889             *best_ist = ist;
2890         }
2891     }
2892
2893     if (!*best_ist)
2894         for (i = 0; i < graph->nb_outputs; i++)
2895             graph->outputs[i]->ost->unavailable = 1;
2896
2897     return 0;
2898 }
2899
2900 /**
2901  * Run a single step of transcoding.
2902  *
2903  * @return  0 for success, <0 for error
2904  */
2905 static int transcode_step(void)
2906 {
2907     OutputStream *ost;
2908     InputStream  *ist;
2909     int ret;
2910
2911     ost = choose_output();
2912     if (!ost) {
2913         if (got_eagain()) {
2914             reset_eagain();
2915             av_usleep(10000);
2916             return 0;
2917         }
2918         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
2919         return AVERROR_EOF;
2920     }
2921
2922     if (ost->filter) {
2923         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
2924             return ret;
2925         if (!ist)
2926             return 0;
2927     } else {
2928         av_assert0(ost->source_index >= 0);
2929         ist = input_streams[ost->source_index];
2930     }
2931
2932     ret = process_input(ist->file_index);
2933     if (ret == AVERROR(EAGAIN)) {
2934         if (input_files[ist->file_index]->eagain)
2935             ost->unavailable = 1;
2936         return 0;
2937     }
2938     if (ret < 0)
2939         return ret == AVERROR_EOF ? 0 : ret;
2940
2941     return reap_filters();
2942 }
2943
2944 /*
2945  * The following code is the main loop of the file converter
2946  */
2947 static int transcode(void)
2948 {
2949     int ret, i;
2950     AVFormatContext *os;
2951     OutputStream *ost;
2952     InputStream *ist;
2953     int64_t timer_start;
2954
2955     ret = transcode_init();
2956     if (ret < 0)
2957         goto fail;
2958
2959     if (stdin_interaction) {
2960         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
2961     }
2962
2963     timer_start = av_gettime();
2964
2965 #if HAVE_PTHREADS
2966     if ((ret = init_input_threads()) < 0)
2967         goto fail;
2968 #endif
2969
2970     while (!received_sigterm) {
2971         int64_t cur_time= av_gettime();
2972
2973         /* if 'q' pressed, exits */
2974         if (stdin_interaction)
2975             if (check_keyboard_interaction(cur_time) < 0)
2976                 break;
2977
2978         /* check if there's any stream where output is still needed */
2979         if (!need_output()) {
2980             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
2981             break;
2982         }
2983
2984         ret = transcode_step();
2985         if (ret < 0) {
2986             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
2987                 continue;
2988
2989             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
2990             break;
2991         }
2992
2993         /* dump report by using the output first video and audio streams */
2994         print_report(0, timer_start, cur_time);
2995     }
2996 #if HAVE_PTHREADS
2997     free_input_threads();
2998 #endif
2999
3000     /* at the end of stream, we must flush the decoder buffers */
3001     for (i = 0; i < nb_input_streams; i++) {
3002         ist = input_streams[i];
3003         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3004             output_packet(ist, NULL);
3005         }
3006     }
3007     flush_encoders();
3008
3009     term_exit();
3010
3011     /* write the trailer if needed and close file */
3012     for (i = 0; i < nb_output_files; i++) {
3013         os = output_files[i]->ctx;
3014         av_write_trailer(os);
3015     }
3016
3017     /* dump report by using the first video and audio streams */
3018     print_report(1, timer_start, av_gettime());
3019
3020     /* close each encoder */
3021     for (i = 0; i < nb_output_streams; i++) {
3022         ost = output_streams[i];
3023         if (ost->encoding_needed) {
3024             av_freep(&ost->st->codec->stats_in);
3025             avcodec_close(ost->st->codec);
3026         }
3027     }
3028
3029     /* close each decoder */
3030     for (i = 0; i < nb_input_streams; i++) {
3031         ist = input_streams[i];
3032         if (ist->decoding_needed) {
3033             avcodec_close(ist->st->codec);
3034         }
3035     }
3036
3037     /* finished ! */
3038     ret = 0;
3039
3040  fail:
3041 #if HAVE_PTHREADS
3042     free_input_threads();
3043 #endif
3044
3045     if (output_streams) {
3046         for (i = 0; i < nb_output_streams; i++) {
3047             ost = output_streams[i];
3048             if (ost) {
3049                 if (ost->stream_copy)
3050                     av_freep(&ost->st->codec->extradata);
3051                 if (ost->logfile) {
3052                     fclose(ost->logfile);
3053                     ost->logfile = NULL;
3054                 }
3055                 av_freep(&ost->st->codec->subtitle_header);
3056                 av_free(ost->forced_kf_pts);
3057                 av_dict_free(&ost->opts);
3058             }
3059         }
3060     }
3061     return ret;
3062 }
3063
3064
3065 static int64_t getutime(void)
3066 {
3067 #if HAVE_GETRUSAGE
3068     struct rusage rusage;
3069
3070     getrusage(RUSAGE_SELF, &rusage);
3071     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3072 #elif HAVE_GETPROCESSTIMES
3073     HANDLE proc;
3074     FILETIME c, e, k, u;
3075     proc = GetCurrentProcess();
3076     GetProcessTimes(proc, &c, &e, &k, &u);
3077     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3078 #else
3079     return av_gettime();
3080 #endif
3081 }
3082
3083 static int64_t getmaxrss(void)
3084 {
3085 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3086     struct rusage rusage;
3087     getrusage(RUSAGE_SELF, &rusage);
3088     return (int64_t)rusage.ru_maxrss * 1024;
3089 #elif HAVE_GETPROCESSMEMORYINFO
3090     HANDLE proc;
3091     PROCESS_MEMORY_COUNTERS memcounters;
3092     proc = GetCurrentProcess();
3093     memcounters.cb = sizeof(memcounters);
3094     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3095     return memcounters.PeakPagefileUsage;
3096 #else
3097     return 0;
3098 #endif
3099 }
3100
3101 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3102 {
3103 }
3104
3105 static void parse_cpuflags(int argc, char **argv, const OptionDef *options)
3106 {
3107     int idx = locate_option(argc, argv, options, "cpuflags");
3108     if (idx && argv[idx + 1])
3109         opt_cpuflags(NULL, "cpuflags", argv[idx + 1]);
3110 }
3111
3112 int main(int argc, char **argv)
3113 {
3114     OptionsContext o = { 0 };
3115     int64_t ti;
3116
3117     reset_options(&o, 0);
3118
3119     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3120     parse_loglevel(argc, argv, options);
3121
3122     if(argc>1 && !strcmp(argv[1], "-d")){
3123         run_as_daemon=1;
3124         av_log_set_callback(log_callback_null);
3125         argc--;
3126         argv++;
3127     }
3128
3129     avcodec_register_all();
3130 #if CONFIG_AVDEVICE
3131     avdevice_register_all();
3132 #endif
3133     avfilter_register_all();
3134     av_register_all();
3135     avformat_network_init();
3136
3137     show_banner(argc, argv, options);
3138
3139     term_init();
3140
3141     parse_cpuflags(argc, argv, options);
3142
3143     /* parse options */
3144     parse_options(&o, argc, argv, options, opt_output_file);
3145
3146     if (nb_output_files <= 0 && nb_input_files == 0) {
3147         show_usage();
3148         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3149         exit_program(1);
3150     }
3151
3152     /* file converter / grab */
3153     if (nb_output_files <= 0) {
3154         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3155         exit_program(1);
3156     }
3157
3158 //     if (nb_input_files == 0) {
3159 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3160 //         exit_program(1);
3161 //     }
3162
3163     current_time = ti = getutime();
3164     if (transcode() < 0)
3165         exit_program(1);
3166     ti = getutime() - ti;
3167     if (do_benchmark) {
3168         int maxrss = getmaxrss() / 1024;
3169         printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss);
3170     }
3171
3172     exit_program(0);
3173     return 0;
3174 }