3eb15a64944cb1ad99274d44089faecf221bad6a
[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 (!ost->frame_number && ist->pts < of->start_time &&
1344         !ost->copy_prior_start)
1345         return;
1346
1347     if (of->recording_time != INT64_MAX &&
1348         ist->pts >= of->recording_time + of->start_time) {
1349         close_output_stream(ost);
1350         return;
1351     }
1352
1353     /* force the input stream PTS */
1354     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1355         audio_size += pkt->size;
1356     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1357         video_size += pkt->size;
1358         ost->sync_opts++;
1359     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1360         subtitle_size += pkt->size;
1361     }
1362
1363     if (pkt->pts != AV_NOPTS_VALUE)
1364         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1365     else
1366         opkt.pts = AV_NOPTS_VALUE;
1367
1368     if (pkt->dts == AV_NOPTS_VALUE)
1369         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1370     else
1371         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1372     opkt.dts -= ost_tb_start_time;
1373
1374     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1375     opkt.flags    = pkt->flags;
1376
1377     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1378     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1379        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1380        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1381        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1382        ) {
1383         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1384             opkt.destruct = av_destruct_packet;
1385     } else {
1386         opkt.data = pkt->data;
1387         opkt.size = pkt->size;
1388     }
1389
1390     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1391         /* store AVPicture in AVPacket, as expected by the output format */
1392         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1393         opkt.data = (uint8_t *)&pict;
1394         opkt.size = sizeof(AVPicture);
1395         opkt.flags |= AV_PKT_FLAG_KEY;
1396     }
1397
1398     write_frame(of->ctx, &opkt, ost);
1399     ost->st->codec->frame_number++;
1400     av_free_packet(&opkt);
1401 }
1402
1403 static void rate_emu_sleep(InputStream *ist)
1404 {
1405     if (input_files[ist->file_index]->rate_emu) {
1406         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
1407         int64_t now = av_gettime() - ist->start;
1408         if (pts > now)
1409             av_usleep(pts - now);
1410     }
1411 }
1412
1413 int guess_input_channel_layout(InputStream *ist)
1414 {
1415     AVCodecContext *dec = ist->st->codec;
1416
1417     if (!dec->channel_layout) {
1418         char layout_name[256];
1419
1420         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1421         if (!dec->channel_layout)
1422             return 0;
1423         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1424                                      dec->channels, dec->channel_layout);
1425         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1426                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1427     }
1428     return 1;
1429 }
1430
1431 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1432 {
1433     AVFrame *decoded_frame;
1434     AVCodecContext *avctx = ist->st->codec;
1435     int i, ret, resample_changed;
1436     AVRational decoded_frame_tb;
1437
1438     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1439         return AVERROR(ENOMEM);
1440     else
1441         avcodec_get_frame_defaults(ist->decoded_frame);
1442     decoded_frame = ist->decoded_frame;
1443
1444     update_benchmark(NULL);
1445     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1446     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1447
1448     if (ret >= 0 && avctx->sample_rate <= 0) {
1449         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1450         ret = AVERROR_INVALIDDATA;
1451     }
1452
1453     if (!*got_output || ret < 0) {
1454         if (!pkt->size) {
1455             for (i = 0; i < ist->nb_filters; i++)
1456                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1457         }
1458         return ret;
1459     }
1460
1461 #if 1
1462     /* increment next_dts to use for the case where the input stream does not
1463        have timestamps or there are multiple frames in the packet */
1464     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1465                      avctx->sample_rate;
1466     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1467                      avctx->sample_rate;
1468 #endif
1469
1470     rate_emu_sleep(ist);
1471
1472     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1473                        ist->resample_channels       != avctx->channels               ||
1474                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1475                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1476     if (resample_changed) {
1477         char layout1[64], layout2[64];
1478
1479         if (!guess_input_channel_layout(ist)) {
1480             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1481                    "layout for Input Stream #%d.%d\n", ist->file_index,
1482                    ist->st->index);
1483             exit_program(1);
1484         }
1485         decoded_frame->channel_layout = avctx->channel_layout;
1486
1487         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1488                                      ist->resample_channel_layout);
1489         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1490                                      decoded_frame->channel_layout);
1491
1492         av_log(NULL, AV_LOG_INFO,
1493                "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",
1494                ist->file_index, ist->st->index,
1495                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1496                ist->resample_channels, layout1,
1497                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1498                avctx->channels, layout2);
1499
1500         ist->resample_sample_fmt     = decoded_frame->format;
1501         ist->resample_sample_rate    = decoded_frame->sample_rate;
1502         ist->resample_channel_layout = decoded_frame->channel_layout;
1503         ist->resample_channels       = avctx->channels;
1504
1505         for (i = 0; i < nb_filtergraphs; i++)
1506             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1507                 FilterGraph *fg = filtergraphs[i];
1508                 int j;
1509                 if (configure_filtergraph(fg) < 0) {
1510                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1511                     exit_program(1);
1512                 }
1513                 for (j = 0; j < fg->nb_outputs; j++) {
1514                     OutputStream *ost = fg->outputs[j]->ost;
1515                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1516                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1517                         av_buffersink_set_frame_size(ost->filter->filter,
1518                                                      ost->st->codec->frame_size);
1519                 }
1520             }
1521     }
1522
1523     /* if the decoder provides a pts, use it instead of the last packet pts.
1524        the decoder could be delaying output by a packet or more. */
1525     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1526         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1527         decoded_frame_tb   = avctx->time_base;
1528     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1529         decoded_frame->pts = decoded_frame->pkt_pts;
1530         pkt->pts           = AV_NOPTS_VALUE;
1531         decoded_frame_tb   = ist->st->time_base;
1532     } else if (pkt->pts != AV_NOPTS_VALUE) {
1533         decoded_frame->pts = pkt->pts;
1534         pkt->pts           = AV_NOPTS_VALUE;
1535         decoded_frame_tb   = ist->st->time_base;
1536     }else {
1537         decoded_frame->pts = ist->dts;
1538         decoded_frame_tb   = AV_TIME_BASE_Q;
1539     }
1540     if (decoded_frame->pts != AV_NOPTS_VALUE)
1541         decoded_frame->pts = av_rescale_q(decoded_frame->pts,
1542                                           decoded_frame_tb,
1543                                           (AVRational){1, ist->st->codec->sample_rate});
1544     for (i = 0; i < ist->nb_filters; i++)
1545         av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame,
1546                                AV_BUFFERSRC_FLAG_PUSH);
1547
1548     decoded_frame->pts = AV_NOPTS_VALUE;
1549
1550     return ret;
1551 }
1552
1553 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1554 {
1555     AVFrame *decoded_frame;
1556     void *buffer_to_free = NULL;
1557     int i, ret = 0, resample_changed;
1558     int64_t best_effort_timestamp;
1559     AVRational *frame_sample_aspect;
1560     float quality;
1561
1562     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1563         return AVERROR(ENOMEM);
1564     else
1565         avcodec_get_frame_defaults(ist->decoded_frame);
1566     decoded_frame = ist->decoded_frame;
1567     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1568
1569     update_benchmark(NULL);
1570     ret = avcodec_decode_video2(ist->st->codec,
1571                                 decoded_frame, got_output, pkt);
1572     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1573     if (!*got_output || ret < 0) {
1574         if (!pkt->size) {
1575             for (i = 0; i < ist->nb_filters; i++)
1576                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1577         }
1578         return ret;
1579     }
1580
1581     quality = same_quant ? decoded_frame->quality : 0;
1582
1583     if(ist->top_field_first>=0)
1584         decoded_frame->top_field_first = ist->top_field_first;
1585
1586     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1587     if(best_effort_timestamp != AV_NOPTS_VALUE)
1588         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1589
1590     if (debug_ts) {
1591         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1592                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1593                 ist->st->index, av_ts2str(decoded_frame->pts),
1594                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1595                 best_effort_timestamp,
1596                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1597                 decoded_frame->key_frame, decoded_frame->pict_type);
1598     }
1599
1600     pkt->size = 0;
1601     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1602
1603     rate_emu_sleep(ist);
1604
1605     if (ist->st->sample_aspect_ratio.num)
1606         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1607
1608     resample_changed = ist->resample_width   != decoded_frame->width  ||
1609                        ist->resample_height  != decoded_frame->height ||
1610                        ist->resample_pix_fmt != decoded_frame->format;
1611     if (resample_changed) {
1612         av_log(NULL, AV_LOG_INFO,
1613                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1614                ist->file_index, ist->st->index,
1615                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1616                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1617
1618         ist->resample_width   = decoded_frame->width;
1619         ist->resample_height  = decoded_frame->height;
1620         ist->resample_pix_fmt = decoded_frame->format;
1621
1622         for (i = 0; i < nb_filtergraphs; i++)
1623             if (ist_in_filtergraph(filtergraphs[i], ist) &&
1624                 configure_filtergraph(filtergraphs[i]) < 0) {
1625                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1626                 exit_program(1);
1627             }
1628     }
1629
1630     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1631     for (i = 0; i < ist->nb_filters; i++) {
1632         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
1633                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
1634                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
1635         // XXX what an ugly hack
1636         if (ist->filters[i]->graph->nb_outputs == 1)
1637             ist->filters[i]->graph->outputs[0]->ost->last_quality = quality;
1638
1639         if (!frame_sample_aspect->num)
1640             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1641         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
1642             FrameBuffer      *buf = decoded_frame->opaque;
1643             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1644                                         decoded_frame->data, decoded_frame->linesize,
1645                                         AV_PERM_READ | AV_PERM_PRESERVE,
1646                                         ist->st->codec->width, ist->st->codec->height,
1647                                         ist->st->codec->pix_fmt);
1648
1649             avfilter_copy_frame_props(fb, decoded_frame);
1650             fb->buf->priv           = buf;
1651             fb->buf->free           = filter_release_buffer;
1652
1653             av_assert0(buf->refcount>0);
1654             buf->refcount++;
1655             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
1656                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
1657                                  AV_BUFFERSRC_FLAG_NO_COPY |
1658                                  AV_BUFFERSRC_FLAG_PUSH);
1659         } else
1660         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, AV_BUFFERSRC_FLAG_PUSH)<0) {
1661             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
1662             exit_program(1);
1663         }
1664
1665     }
1666
1667     av_free(buffer_to_free);
1668     return ret;
1669 }
1670
1671 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1672 {
1673     AVSubtitle subtitle;
1674     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1675                                           &subtitle, got_output, pkt);
1676     if (ret < 0 || !*got_output) {
1677         if (!pkt->size)
1678             sub2video_flush(ist);
1679         return ret;
1680     }
1681
1682     if (ist->fix_sub_duration) {
1683         if (ist->prev_sub.got_output) {
1684             int end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1685                                  1000, AV_TIME_BASE);
1686             if (end < ist->prev_sub.subtitle.end_display_time) {
1687                 av_log(ist->st->codec, AV_LOG_DEBUG,
1688                        "Subtitle duration reduced from %d to %d\n",
1689                        ist->prev_sub.subtitle.end_display_time, end);
1690                 ist->prev_sub.subtitle.end_display_time = end;
1691             }
1692         }
1693         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1694         FFSWAP(int,        ret,         ist->prev_sub.ret);
1695         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1696     }
1697
1698     sub2video_update(ist, &subtitle);
1699
1700     if (!*got_output || !subtitle.num_rects)
1701         return ret;
1702
1703     rate_emu_sleep(ist);
1704
1705     for (i = 0; i < nb_output_streams; i++) {
1706         OutputStream *ost = output_streams[i];
1707
1708         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1709             continue;
1710
1711         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
1712     }
1713
1714     avsubtitle_free(&subtitle);
1715     return ret;
1716 }
1717
1718 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1719 static int output_packet(InputStream *ist, const AVPacket *pkt)
1720 {
1721     int ret = 0, i;
1722     int got_output;
1723
1724     AVPacket avpkt;
1725     if (!ist->saw_first_ts) {
1726         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;
1727         ist->pts = 0;
1728         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1729             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1730             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1731         }
1732         ist->saw_first_ts = 1;
1733     }
1734
1735     if (ist->next_dts == AV_NOPTS_VALUE)
1736         ist->next_dts = ist->dts;
1737     if (ist->next_pts == AV_NOPTS_VALUE)
1738         ist->next_pts = ist->pts;
1739
1740     if (pkt == NULL) {
1741         /* EOF handling */
1742         av_init_packet(&avpkt);
1743         avpkt.data = NULL;
1744         avpkt.size = 0;
1745         goto handle_eof;
1746     } else {
1747         avpkt = *pkt;
1748     }
1749
1750     if (pkt->dts != AV_NOPTS_VALUE) {
1751         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1752         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1753             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1754     }
1755
1756     // while we have more to decode or while the decoder did output something on EOF
1757     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1758         int duration;
1759     handle_eof:
1760
1761         ist->pts = ist->next_pts;
1762         ist->dts = ist->next_dts;
1763
1764         if (avpkt.size && avpkt.size != pkt->size) {
1765             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1766                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1767             ist->showed_multi_packet_warning = 1;
1768         }
1769
1770         switch (ist->st->codec->codec_type) {
1771         case AVMEDIA_TYPE_AUDIO:
1772             ret = decode_audio    (ist, &avpkt, &got_output);
1773             break;
1774         case AVMEDIA_TYPE_VIDEO:
1775             ret = decode_video    (ist, &avpkt, &got_output);
1776             if (avpkt.duration) {
1777                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1778             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1779                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1780                 duration = ((int64_t)AV_TIME_BASE *
1781                                 ist->st->codec->time_base.num * ticks) /
1782                                 ist->st->codec->time_base.den;
1783             } else
1784                 duration = 0;
1785
1786             if(ist->dts != AV_NOPTS_VALUE && duration) {
1787                 ist->next_dts += duration;
1788             }else
1789                 ist->next_dts = AV_NOPTS_VALUE;
1790
1791             if (got_output)
1792                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1793             break;
1794         case AVMEDIA_TYPE_SUBTITLE:
1795             ret = transcode_subtitles(ist, &avpkt, &got_output);
1796             break;
1797         default:
1798             return -1;
1799         }
1800
1801         if (ret < 0)
1802             return ret;
1803
1804         avpkt.dts=
1805         avpkt.pts= AV_NOPTS_VALUE;
1806
1807         // touch data and size only if not EOF
1808         if (pkt) {
1809             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1810                 ret = avpkt.size;
1811             avpkt.data += ret;
1812             avpkt.size -= ret;
1813         }
1814         if (!got_output) {
1815             continue;
1816         }
1817     }
1818
1819     /* handle stream copy */
1820     if (!ist->decoding_needed) {
1821         rate_emu_sleep(ist);
1822         ist->dts = ist->next_dts;
1823         switch (ist->st->codec->codec_type) {
1824         case AVMEDIA_TYPE_AUDIO:
1825             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1826                              ist->st->codec->sample_rate;
1827             break;
1828         case AVMEDIA_TYPE_VIDEO:
1829             if (pkt->duration) {
1830                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1831             } else if(ist->st->codec->time_base.num != 0) {
1832                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1833                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1834                                   ist->st->codec->time_base.num * ticks) /
1835                                   ist->st->codec->time_base.den;
1836             }
1837             break;
1838         }
1839         ist->pts = ist->dts;
1840         ist->next_pts = ist->next_dts;
1841     }
1842     for (i = 0; pkt && i < nb_output_streams; i++) {
1843         OutputStream *ost = output_streams[i];
1844
1845         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1846             continue;
1847
1848         do_streamcopy(ist, ost, pkt);
1849     }
1850
1851     return 0;
1852 }
1853
1854 static void print_sdp(void)
1855 {
1856     char sdp[2048];
1857     int i;
1858     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1859
1860     if (!avc)
1861         exit_program(1);
1862     for (i = 0; i < nb_output_files; i++)
1863         avc[i] = output_files[i]->ctx;
1864
1865     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1866     printf("SDP:\n%s\n", sdp);
1867     fflush(stdout);
1868     av_freep(&avc);
1869 }
1870
1871 static int init_input_stream(int ist_index, char *error, int error_len)
1872 {
1873     InputStream *ist = input_streams[ist_index];
1874
1875     if (ist->decoding_needed) {
1876         AVCodec *codec = ist->dec;
1877         if (!codec) {
1878             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1879                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1880             return AVERROR(EINVAL);
1881         }
1882
1883         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
1884         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
1885             ist->st->codec->get_buffer     = codec_get_buffer;
1886             ist->st->codec->release_buffer = codec_release_buffer;
1887             ist->st->codec->opaque         = &ist->buffer_pool;
1888         }
1889
1890         if (!av_dict_get(ist->opts, "threads", NULL, 0))
1891             av_dict_set(&ist->opts, "threads", "auto", 0);
1892         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
1893             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1894                     ist->file_index, ist->st->index);
1895             return AVERROR(EINVAL);
1896         }
1897         assert_codec_experimental(ist->st->codec, 0);
1898         assert_avoptions(ist->opts);
1899     }
1900
1901     ist->next_pts = AV_NOPTS_VALUE;
1902     ist->next_dts = AV_NOPTS_VALUE;
1903     ist->is_start = 1;
1904
1905     return 0;
1906 }
1907
1908 static InputStream *get_input_stream(OutputStream *ost)
1909 {
1910     if (ost->source_index >= 0)
1911         return input_streams[ost->source_index];
1912     return NULL;
1913 }
1914
1915 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1916                                     AVCodecContext *avctx)
1917 {
1918     char *p;
1919     int n = 1, i;
1920     int64_t t;
1921
1922     for (p = kf; *p; p++)
1923         if (*p == ',')
1924             n++;
1925     ost->forced_kf_count = n;
1926     ost->forced_kf_pts   = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1927     if (!ost->forced_kf_pts) {
1928         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1929         exit_program(1);
1930     }
1931
1932     p = kf;
1933     for (i = 0; i < n; i++) {
1934         char *next = strchr(p, ',');
1935
1936         if (next)
1937             *next++ = 0;
1938
1939         t = parse_time_or_die("force_key_frames", p, 1);
1940         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1941
1942         p = next;
1943     }
1944 }
1945
1946 static void report_new_stream(int input_index, AVPacket *pkt)
1947 {
1948     InputFile *file = input_files[input_index];
1949     AVStream *st = file->ctx->streams[pkt->stream_index];
1950
1951     if (pkt->stream_index < file->nb_streams_warn)
1952         return;
1953     av_log(file->ctx, AV_LOG_WARNING,
1954            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
1955            av_get_media_type_string(st->codec->codec_type),
1956            input_index, pkt->stream_index,
1957            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
1958     file->nb_streams_warn = pkt->stream_index + 1;
1959 }
1960
1961 static int transcode_init(void)
1962 {
1963     int ret = 0, i, j, k;
1964     AVFormatContext *oc;
1965     AVCodecContext *codec;
1966     OutputStream *ost;
1967     InputStream *ist;
1968     char error[1024];
1969     int want_sdp = 1;
1970
1971     /* init framerate emulation */
1972     for (i = 0; i < nb_input_files; i++) {
1973         InputFile *ifile = input_files[i];
1974         if (ifile->rate_emu)
1975             for (j = 0; j < ifile->nb_streams; j++)
1976                 input_streams[j + ifile->ist_index]->start = av_gettime();
1977     }
1978
1979     /* output stream init */
1980     for (i = 0; i < nb_output_files; i++) {
1981         oc = output_files[i]->ctx;
1982         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
1983             av_dump_format(oc, i, oc->filename, 1);
1984             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
1985             return AVERROR(EINVAL);
1986         }
1987     }
1988
1989     /* init complex filtergraphs */
1990     for (i = 0; i < nb_filtergraphs; i++)
1991         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
1992             return ret;
1993
1994     /* for each output stream, we compute the right encoding parameters */
1995     for (i = 0; i < nb_output_streams; i++) {
1996         AVCodecContext *icodec = NULL;
1997         ost = output_streams[i];
1998         oc  = output_files[ost->file_index]->ctx;
1999         ist = get_input_stream(ost);
2000
2001         if (ost->attachment_filename)
2002             continue;
2003
2004         codec  = ost->st->codec;
2005
2006         if (ist) {
2007             icodec = ist->st->codec;
2008
2009             ost->st->disposition          = ist->st->disposition;
2010             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2011             codec->chroma_sample_location = icodec->chroma_sample_location;
2012         }
2013
2014         if (ost->stream_copy) {
2015             uint64_t extra_size;
2016
2017             av_assert0(ist && !ost->filter);
2018
2019             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2020
2021             if (extra_size > INT_MAX) {
2022                 return AVERROR(EINVAL);
2023             }
2024
2025             /* if stream_copy is selected, no need to decode or encode */
2026             codec->codec_id   = icodec->codec_id;
2027             codec->codec_type = icodec->codec_type;
2028
2029             if (!codec->codec_tag) {
2030                 if (!oc->oformat->codec_tag ||
2031                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2032                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2033                     codec->codec_tag = icodec->codec_tag;
2034             }
2035
2036             codec->bit_rate       = icodec->bit_rate;
2037             codec->rc_max_rate    = icodec->rc_max_rate;
2038             codec->rc_buffer_size = icodec->rc_buffer_size;
2039             codec->field_order    = icodec->field_order;
2040             codec->extradata      = av_mallocz(extra_size);
2041             if (!codec->extradata) {
2042                 return AVERROR(ENOMEM);
2043             }
2044             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2045             codec->extradata_size= icodec->extradata_size;
2046             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2047
2048             codec->time_base = ist->st->time_base;
2049             /*
2050              * Avi is a special case here because it supports variable fps but
2051              * having the fps and timebase differe significantly adds quite some
2052              * overhead
2053              */
2054             if(!strcmp(oc->oformat->name, "avi")) {
2055                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2056                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2057                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2058                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2059                      || copy_tb==2){
2060                     codec->time_base.num = ist->st->r_frame_rate.den;
2061                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2062                     codec->ticks_per_frame = 2;
2063                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2064                                  && av_q2d(ist->st->time_base) < 1.0/500
2065                     || copy_tb==0){
2066                     codec->time_base = icodec->time_base;
2067                     codec->time_base.num *= icodec->ticks_per_frame;
2068                     codec->time_base.den *= 2;
2069                     codec->ticks_per_frame = 2;
2070                 }
2071             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2072                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2073                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2074                       && strcmp(oc->oformat->name, "f4v")
2075             ) {
2076                 if(   copy_tb<0 && icodec->time_base.den
2077                                 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2078                                 && av_q2d(ist->st->time_base) < 1.0/500
2079                    || copy_tb==0){
2080                     codec->time_base = icodec->time_base;
2081                     codec->time_base.num *= icodec->ticks_per_frame;
2082                 }
2083             }
2084
2085             if(ost->frame_rate.num)
2086                 codec->time_base = av_inv_q(ost->frame_rate);
2087
2088             av_reduce(&codec->time_base.num, &codec->time_base.den,
2089                         codec->time_base.num, codec->time_base.den, INT_MAX);
2090
2091             switch (codec->codec_type) {
2092             case AVMEDIA_TYPE_AUDIO:
2093                 if (audio_volume != 256) {
2094                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2095                     exit_program(1);
2096                 }
2097                 codec->channel_layout     = icodec->channel_layout;
2098                 codec->sample_rate        = icodec->sample_rate;
2099                 codec->channels           = icodec->channels;
2100                 codec->frame_size         = icodec->frame_size;
2101                 codec->audio_service_type = icodec->audio_service_type;
2102                 codec->block_align        = icodec->block_align;
2103                 if((codec->block_align == 1 || codec->block_align == 1152) && codec->codec_id == AV_CODEC_ID_MP3)
2104                     codec->block_align= 0;
2105                 if(codec->codec_id == AV_CODEC_ID_AC3)
2106                     codec->block_align= 0;
2107                 break;
2108             case AVMEDIA_TYPE_VIDEO:
2109                 codec->pix_fmt            = icodec->pix_fmt;
2110                 codec->width              = icodec->width;
2111                 codec->height             = icodec->height;
2112                 codec->has_b_frames       = icodec->has_b_frames;
2113                 if (!codec->sample_aspect_ratio.num) {
2114                     codec->sample_aspect_ratio   =
2115                     ost->st->sample_aspect_ratio =
2116                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2117                         ist->st->codec->sample_aspect_ratio.num ?
2118                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2119                 }
2120                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2121                 break;
2122             case AVMEDIA_TYPE_SUBTITLE:
2123                 codec->width  = icodec->width;
2124                 codec->height = icodec->height;
2125                 break;
2126             case AVMEDIA_TYPE_DATA:
2127             case AVMEDIA_TYPE_ATTACHMENT:
2128                 break;
2129             default:
2130                 abort();
2131             }
2132         } else {
2133             if (!ost->enc)
2134                 ost->enc = avcodec_find_encoder(codec->codec_id);
2135             if (!ost->enc) {
2136                 /* should only happen when a default codec is not present. */
2137                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2138                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2139                 ret = AVERROR(EINVAL);
2140                 goto dump_format;
2141             }
2142
2143             if (ist)
2144                 ist->decoding_needed++;
2145             ost->encoding_needed = 1;
2146
2147             if (!ost->filter &&
2148                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2149                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2150                     FilterGraph *fg;
2151                     fg = init_simple_filtergraph(ist, ost);
2152                     if (configure_filtergraph(fg)) {
2153                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2154                         exit(1);
2155                     }
2156             }
2157
2158             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2159                 if (ost->filter && !ost->frame_rate.num)
2160                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2161                 if (ist && !ost->frame_rate.num)
2162                     ost->frame_rate = ist->framerate;
2163                 if (ist && !ost->frame_rate.num)
2164                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2165 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2166                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2167                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2168                     ost->frame_rate = ost->enc->supported_framerates[idx];
2169                 }
2170             }
2171
2172             switch (codec->codec_type) {
2173             case AVMEDIA_TYPE_AUDIO:
2174                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2175                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2176                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2177                 codec->channels       = av_get_channel_layout_nb_channels(codec->channel_layout);
2178                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2179                 break;
2180             case AVMEDIA_TYPE_VIDEO:
2181                 codec->time_base = av_inv_q(ost->frame_rate);
2182                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2183                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2184                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2185                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2186                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2187                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2188                 }
2189                 for (j = 0; j < ost->forced_kf_count; j++)
2190                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2191                                                          AV_TIME_BASE_Q,
2192                                                          codec->time_base);
2193
2194                 codec->width  = ost->filter->filter->inputs[0]->w;
2195                 codec->height = ost->filter->filter->inputs[0]->h;
2196                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2197                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
2198                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
2199                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2200                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2201
2202                 if (!icodec ||
2203                     codec->width   != icodec->width  ||
2204                     codec->height  != icodec->height ||
2205                     codec->pix_fmt != icodec->pix_fmt) {
2206                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2207                 }
2208
2209                 if (ost->forced_keyframes)
2210                     parse_forced_key_frames(ost->forced_keyframes, ost,
2211                                             ost->st->codec);
2212                 break;
2213             case AVMEDIA_TYPE_SUBTITLE:
2214                 codec->time_base = (AVRational){1, 1000};
2215                 if (!codec->width) {
2216                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2217                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2218                 }
2219                 break;
2220             default:
2221                 abort();
2222                 break;
2223             }
2224             /* two pass mode */
2225             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2226                 char logfilename[1024];
2227                 FILE *f;
2228
2229                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2230                          ost->logfile_prefix ? ost->logfile_prefix :
2231                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2232                          i);
2233                 if (!strcmp(ost->enc->name, "libx264")) {
2234                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2235                 } else {
2236                     if (codec->flags & CODEC_FLAG_PASS2) {
2237                         char  *logbuffer;
2238                         size_t logbuffer_size;
2239                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2240                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2241                                    logfilename);
2242                             exit_program(1);
2243                         }
2244                         codec->stats_in = logbuffer;
2245                     }
2246                     if (codec->flags & CODEC_FLAG_PASS1) {
2247                         f = fopen(logfilename, "wb");
2248                         if (!f) {
2249                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2250                                 logfilename, strerror(errno));
2251                             exit_program(1);
2252                         }
2253                         ost->logfile = f;
2254                     }
2255                 }
2256             }
2257         }
2258     }
2259
2260     /* open each encoder */
2261     for (i = 0; i < nb_output_streams; i++) {
2262         ost = output_streams[i];
2263         if (ost->encoding_needed) {
2264             AVCodec      *codec = ost->enc;
2265             AVCodecContext *dec = NULL;
2266
2267             if ((ist = get_input_stream(ost)))
2268                 dec = ist->st->codec;
2269             if (dec && dec->subtitle_header) {
2270                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2271                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2272                 if (!ost->st->codec->subtitle_header) {
2273                     ret = AVERROR(ENOMEM);
2274                     goto dump_format;
2275                 }
2276                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2277                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2278             }
2279             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2280                 av_dict_set(&ost->opts, "threads", "auto", 0);
2281             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2282                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2283                         ost->file_index, ost->index);
2284                 ret = AVERROR(EINVAL);
2285                 goto dump_format;
2286             }
2287             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2288                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2289                 av_buffersink_set_frame_size(ost->filter->filter,
2290                                              ost->st->codec->frame_size);
2291             assert_codec_experimental(ost->st->codec, 1);
2292             assert_avoptions(ost->opts);
2293             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2294                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2295                                              " It takes bits/s as argument, not kbits/s\n");
2296             extra_size += ost->st->codec->extradata_size;
2297
2298             if (ost->st->codec->me_threshold)
2299                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
2300         }
2301     }
2302
2303     /* init input streams */
2304     for (i = 0; i < nb_input_streams; i++)
2305         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
2306             goto dump_format;
2307
2308     /* discard unused programs */
2309     for (i = 0; i < nb_input_files; i++) {
2310         InputFile *ifile = input_files[i];
2311         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2312             AVProgram *p = ifile->ctx->programs[j];
2313             int discard  = AVDISCARD_ALL;
2314
2315             for (k = 0; k < p->nb_stream_indexes; k++)
2316                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2317                     discard = AVDISCARD_DEFAULT;
2318                     break;
2319                 }
2320             p->discard = discard;
2321         }
2322     }
2323
2324     /* open files and write file headers */
2325     for (i = 0; i < nb_output_files; i++) {
2326         oc = output_files[i]->ctx;
2327         oc->interrupt_callback = int_cb;
2328         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2329             char errbuf[128];
2330             const char *errbuf_ptr = errbuf;
2331             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
2332                 errbuf_ptr = strerror(AVUNERROR(ret));
2333             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
2334             ret = AVERROR(EINVAL);
2335             goto dump_format;
2336         }
2337 //         assert_avoptions(output_files[i]->opts);
2338         if (strcmp(oc->oformat->name, "rtp")) {
2339             want_sdp = 0;
2340         }
2341     }
2342
2343  dump_format:
2344     /* dump the file output parameters - cannot be done before in case
2345        of stream copy */
2346     for (i = 0; i < nb_output_files; i++) {
2347         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2348     }
2349
2350     /* dump the stream mapping */
2351     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2352     for (i = 0; i < nb_input_streams; i++) {
2353         ist = input_streams[i];
2354
2355         for (j = 0; j < ist->nb_filters; j++) {
2356             if (ist->filters[j]->graph->graph_desc) {
2357                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2358                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2359                        ist->filters[j]->name);
2360                 if (nb_filtergraphs > 1)
2361                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2362                 av_log(NULL, AV_LOG_INFO, "\n");
2363             }
2364         }
2365     }
2366
2367     for (i = 0; i < nb_output_streams; i++) {
2368         ost = output_streams[i];
2369
2370         if (ost->attachment_filename) {
2371             /* an attached file */
2372             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2373                    ost->attachment_filename, ost->file_index, ost->index);
2374             continue;
2375         }
2376
2377         if (ost->filter && ost->filter->graph->graph_desc) {
2378             /* output from a complex graph */
2379             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2380             if (nb_filtergraphs > 1)
2381                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2382
2383             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2384                    ost->index, ost->enc ? ost->enc->name : "?");
2385             continue;
2386         }
2387
2388         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2389                input_streams[ost->source_index]->file_index,
2390                input_streams[ost->source_index]->st->index,
2391                ost->file_index,
2392                ost->index);
2393         if (ost->sync_ist != input_streams[ost->source_index])
2394             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2395                    ost->sync_ist->file_index,
2396                    ost->sync_ist->st->index);
2397         if (ost->stream_copy)
2398             av_log(NULL, AV_LOG_INFO, " (copy)");
2399         else
2400             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2401                    input_streams[ost->source_index]->dec->name : "?",
2402                    ost->enc ? ost->enc->name : "?");
2403         av_log(NULL, AV_LOG_INFO, "\n");
2404     }
2405
2406     if (ret) {
2407         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2408         return ret;
2409     }
2410
2411     if (want_sdp) {
2412         print_sdp();
2413     }
2414
2415     return 0;
2416 }
2417
2418 /**
2419  * @return 1 if there are still streams where more output is wanted,
2420  *         0 otherwise
2421  */
2422 static int need_output(void)
2423 {
2424     int i;
2425
2426     for (i = 0; i < nb_output_streams; i++) {
2427         OutputStream *ost    = output_streams[i];
2428         OutputFile *of       = output_files[ost->file_index];
2429         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2430
2431         if (ost->finished ||
2432             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2433             continue;
2434         if (ost->frame_number >= ost->max_frames) {
2435             int j;
2436             for (j = 0; j < of->ctx->nb_streams; j++)
2437                 close_output_stream(output_streams[of->ost_index + j]);
2438             continue;
2439         }
2440
2441         return 1;
2442     }
2443
2444     return 0;
2445 }
2446
2447 /**
2448  * Select the output stream to process.
2449  *
2450  * @return  selected output stream, or NULL if none available
2451  */
2452 static OutputStream *choose_output(void)
2453 {
2454     int i;
2455     int64_t opts_min = INT64_MAX;
2456     OutputStream *ost_min = NULL;
2457
2458     for (i = 0; i < nb_output_streams; i++) {
2459         OutputStream *ost = output_streams[i];
2460         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2461                                     AV_TIME_BASE_Q);
2462         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2463             opts_min = opts;
2464             ost_min  = ost;
2465         }
2466     }
2467     return ost_min;
2468 }
2469
2470 static int check_keyboard_interaction(int64_t cur_time)
2471 {
2472     int i, ret, key;
2473     static int64_t last_time;
2474     if (received_nb_signals)
2475         return AVERROR_EXIT;
2476     /* read_key() returns 0 on EOF */
2477     if(cur_time - last_time >= 100000 && !run_as_daemon){
2478         key =  read_key();
2479         last_time = cur_time;
2480     }else
2481         key = -1;
2482     if (key == 'q')
2483         return AVERROR_EXIT;
2484     if (key == '+') av_log_set_level(av_log_get_level()+10);
2485     if (key == '-') av_log_set_level(av_log_get_level()-10);
2486     if (key == 's') qp_hist     ^= 1;
2487     if (key == 'h'){
2488         if (do_hex_dump){
2489             do_hex_dump = do_pkt_dump = 0;
2490         } else if(do_pkt_dump){
2491             do_hex_dump = 1;
2492         } else
2493             do_pkt_dump = 1;
2494         av_log_set_level(AV_LOG_DEBUG);
2495     }
2496     if (key == 'c' || key == 'C'){
2497         char buf[4096], target[64], command[256], arg[256] = {0};
2498         double time;
2499         int k, n = 0;
2500         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2501         i = 0;
2502         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2503             if (k > 0)
2504                 buf[i++] = k;
2505         buf[i] = 0;
2506         if (k > 0 &&
2507             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2508             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2509                    target, time, command, arg);
2510             for (i = 0; i < nb_filtergraphs; i++) {
2511                 FilterGraph *fg = filtergraphs[i];
2512                 if (fg->graph) {
2513                     if (time < 0) {
2514                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2515                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2516                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2517                     } else {
2518                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2519                     }
2520                 }
2521             }
2522         } else {
2523             av_log(NULL, AV_LOG_ERROR,
2524                    "Parse error, at least 3 arguments were expected, "
2525                    "only %d given in string '%s'\n", n, buf);
2526         }
2527     }
2528     if (key == 'd' || key == 'D'){
2529         int debug=0;
2530         if(key == 'D') {
2531             debug = input_streams[0]->st->codec->debug<<1;
2532             if(!debug) debug = 1;
2533             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2534                 debug += debug;
2535         }else
2536             if(scanf("%d", &debug)!=1)
2537                 fprintf(stderr,"error parsing debug value\n");
2538         for(i=0;i<nb_input_streams;i++) {
2539             input_streams[i]->st->codec->debug = debug;
2540         }
2541         for(i=0;i<nb_output_streams;i++) {
2542             OutputStream *ost = output_streams[i];
2543             ost->st->codec->debug = debug;
2544         }
2545         if(debug) av_log_set_level(AV_LOG_DEBUG);
2546         fprintf(stderr,"debug=%d\n", debug);
2547     }
2548     if (key == '?'){
2549         fprintf(stderr, "key    function\n"
2550                         "?      show this help\n"
2551                         "+      increase verbosity\n"
2552                         "-      decrease verbosity\n"
2553                         "c      Send command to filtergraph\n"
2554                         "D      cycle through available debug modes\n"
2555                         "h      dump packets/hex press to cycle through the 3 states\n"
2556                         "q      quit\n"
2557                         "s      Show QP histogram\n"
2558         );
2559     }
2560     return 0;
2561 }
2562
2563 #if HAVE_PTHREADS
2564 static void *input_thread(void *arg)
2565 {
2566     InputFile *f = arg;
2567     int ret = 0;
2568
2569     while (!transcoding_finished && ret >= 0) {
2570         AVPacket pkt;
2571         ret = av_read_frame(f->ctx, &pkt);
2572
2573         if (ret == AVERROR(EAGAIN)) {
2574             av_usleep(10000);
2575             ret = 0;
2576             continue;
2577         } else if (ret < 0)
2578             break;
2579
2580         pthread_mutex_lock(&f->fifo_lock);
2581         while (!av_fifo_space(f->fifo))
2582             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2583
2584         av_dup_packet(&pkt);
2585         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2586
2587         pthread_mutex_unlock(&f->fifo_lock);
2588     }
2589
2590     f->finished = 1;
2591     return NULL;
2592 }
2593
2594 static void free_input_threads(void)
2595 {
2596     int i;
2597
2598     if (nb_input_files == 1)
2599         return;
2600
2601     transcoding_finished = 1;
2602
2603     for (i = 0; i < nb_input_files; i++) {
2604         InputFile *f = input_files[i];
2605         AVPacket pkt;
2606
2607         if (!f->fifo || f->joined)
2608             continue;
2609
2610         pthread_mutex_lock(&f->fifo_lock);
2611         while (av_fifo_size(f->fifo)) {
2612             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2613             av_free_packet(&pkt);
2614         }
2615         pthread_cond_signal(&f->fifo_cond);
2616         pthread_mutex_unlock(&f->fifo_lock);
2617
2618         pthread_join(f->thread, NULL);
2619         f->joined = 1;
2620
2621         while (av_fifo_size(f->fifo)) {
2622             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2623             av_free_packet(&pkt);
2624         }
2625         av_fifo_free(f->fifo);
2626     }
2627 }
2628
2629 static int init_input_threads(void)
2630 {
2631     int i, ret;
2632
2633     if (nb_input_files == 1)
2634         return 0;
2635
2636     for (i = 0; i < nb_input_files; i++) {
2637         InputFile *f = input_files[i];
2638
2639         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2640             return AVERROR(ENOMEM);
2641
2642         pthread_mutex_init(&f->fifo_lock, NULL);
2643         pthread_cond_init (&f->fifo_cond, NULL);
2644
2645         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2646             return AVERROR(ret);
2647     }
2648     return 0;
2649 }
2650
2651 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2652 {
2653     int ret = 0;
2654
2655     pthread_mutex_lock(&f->fifo_lock);
2656
2657     if (av_fifo_size(f->fifo)) {
2658         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2659         pthread_cond_signal(&f->fifo_cond);
2660     } else {
2661         if (f->finished)
2662             ret = AVERROR_EOF;
2663         else
2664             ret = AVERROR(EAGAIN);
2665     }
2666
2667     pthread_mutex_unlock(&f->fifo_lock);
2668
2669     return ret;
2670 }
2671 #endif
2672
2673 static int get_input_packet(InputFile *f, AVPacket *pkt)
2674 {
2675 #if HAVE_PTHREADS
2676     if (nb_input_files > 1)
2677         return get_input_packet_mt(f, pkt);
2678 #endif
2679     return av_read_frame(f->ctx, pkt);
2680 }
2681
2682 static int got_eagain(void)
2683 {
2684     int i;
2685     for (i = 0; i < nb_output_streams; i++)
2686         if (output_streams[i]->unavailable)
2687             return 1;
2688     return 0;
2689 }
2690
2691 static void reset_eagain(void)
2692 {
2693     int i;
2694     for (i = 0; i < nb_input_files; i++)
2695         input_files[i]->eagain = 0;
2696     for (i = 0; i < nb_output_streams; i++)
2697         output_streams[i]->unavailable = 0;
2698 }
2699
2700 /**
2701  * @return
2702  * - 0 -- one packet was read and processed
2703  * - AVERROR(EAGAIN) -- no packets were available for selected file,
2704  *   this function should be called again
2705  * - AVERROR_EOF -- this function should not be called again
2706  */
2707 static int process_input(int file_index)
2708 {
2709     InputFile *ifile = input_files[file_index];
2710     AVFormatContext *is;
2711     InputStream *ist;
2712     AVPacket pkt;
2713     int ret, i, j;
2714
2715     is  = ifile->ctx;
2716     ret = get_input_packet(ifile, &pkt);
2717
2718     if (ret == AVERROR(EAGAIN)) {
2719         ifile->eagain = 1;
2720         return ret;
2721     }
2722     if (ret < 0) {
2723         if (ret != AVERROR_EOF) {
2724             print_error(is->filename, ret);
2725             if (exit_on_error)
2726                 exit_program(1);
2727         }
2728         ifile->eof_reached = 1;
2729
2730         for (i = 0; i < ifile->nb_streams; i++) {
2731             ist = input_streams[ifile->ist_index + i];
2732             if (ist->decoding_needed)
2733                 output_packet(ist, NULL);
2734
2735             /* mark all outputs that don't go through lavfi as finished */
2736             for (j = 0; j < nb_output_streams; j++) {
2737                 OutputStream *ost = output_streams[j];
2738
2739                 if (ost->source_index == ifile->ist_index + i &&
2740                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2741                     close_output_stream(ost);
2742             }
2743         }
2744
2745         return AVERROR(EAGAIN);
2746     }
2747
2748     reset_eagain();
2749
2750     if (do_pkt_dump) {
2751         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2752                          is->streams[pkt.stream_index]);
2753     }
2754     /* the following test is needed in case new streams appear
2755        dynamically in stream : we ignore them */
2756     if (pkt.stream_index >= ifile->nb_streams) {
2757         report_new_stream(file_index, &pkt);
2758         goto discard_packet;
2759     }
2760
2761     ist = input_streams[ifile->ist_index + pkt.stream_index];
2762     if (ist->discard)
2763         goto discard_packet;
2764
2765     if(!ist->wrap_correction_done && input_files[file_index]->ctx->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
2766         int64_t stime = av_rescale_q(input_files[file_index]->ctx->start_time, AV_TIME_BASE_Q, ist->st->time_base);
2767         int64_t stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
2768         ist->wrap_correction_done = 1;
2769
2770         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2771             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
2772             ist->wrap_correction_done = 0;
2773         }
2774         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2775             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
2776             ist->wrap_correction_done = 0;
2777         }
2778     }
2779
2780     if (pkt.dts != AV_NOPTS_VALUE)
2781         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2782     if (pkt.pts != AV_NOPTS_VALUE)
2783         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2784
2785     if (pkt.pts != AV_NOPTS_VALUE)
2786         pkt.pts *= ist->ts_scale;
2787     if (pkt.dts != AV_NOPTS_VALUE)
2788         pkt.dts *= ist->ts_scale;
2789
2790     if (debug_ts) {
2791         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
2792                 "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",
2793                 ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2794                 av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
2795                 av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
2796                 av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2797                 av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2798                 input_files[ist->file_index]->ts_offset);
2799     }
2800
2801     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2802         !copy_ts) {
2803         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2804         int64_t delta   = pkt_dts - ist->next_dts;
2805         if (is->iformat->flags & AVFMT_TS_DISCONT) {
2806         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2807             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2808                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2809             pkt_dts+1<ist->pts){
2810             ifile->ts_offset -= delta;
2811             av_log(NULL, AV_LOG_DEBUG,
2812                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2813                    delta, ifile->ts_offset);
2814             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2815             if (pkt.pts != AV_NOPTS_VALUE)
2816                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2817         }
2818         } else {
2819             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2820                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2821                ) {
2822                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
2823                 pkt.dts = AV_NOPTS_VALUE;
2824             }
2825             if (pkt.pts != AV_NOPTS_VALUE){
2826                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
2827                 delta   = pkt_pts - ist->next_dts;
2828                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2829                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2830                    ) {
2831                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
2832                     pkt.pts = AV_NOPTS_VALUE;
2833                 }
2834             }
2835         }
2836     }
2837
2838     sub2video_heartbeat(ist, pkt.pts);
2839
2840     ret = output_packet(ist, &pkt);
2841     if (ret < 0) {
2842         char buf[128];
2843         av_strerror(ret, buf, sizeof(buf));
2844         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
2845                 ist->file_index, ist->st->index, buf);
2846         if (exit_on_error)
2847             exit_program(1);
2848     }
2849
2850 discard_packet:
2851     av_free_packet(&pkt);
2852
2853     return 0;
2854 }
2855
2856 /**
2857  * Perform a step of transcoding for the specified filter graph.
2858  *
2859  * @param[in]  graph     filter graph to consider
2860  * @param[out] best_ist  input stream where a frame would allow to continue
2861  * @return  0 for success, <0 for error
2862  */
2863 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
2864 {
2865     int i, ret;
2866     int nb_requests, nb_requests_max = 0;
2867     InputFilter *ifilter;
2868     InputStream *ist;
2869
2870     *best_ist = NULL;
2871     ret = avfilter_graph_request_oldest(graph->graph);
2872     if (ret >= 0)
2873         return reap_filters();
2874
2875     if (ret == AVERROR_EOF) {
2876         ret = reap_filters();
2877         for (i = 0; i < graph->nb_outputs; i++)
2878             close_output_stream(graph->outputs[i]->ost);
2879         return ret;
2880     }
2881     if (ret != AVERROR(EAGAIN))
2882         return ret;
2883
2884     for (i = 0; i < graph->nb_inputs; i++) {
2885         ifilter = graph->inputs[i];
2886         ist = ifilter->ist;
2887         if (input_files[ist->file_index]->eagain ||
2888             input_files[ist->file_index]->eof_reached)
2889             continue;
2890         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
2891         if (nb_requests > nb_requests_max) {
2892             nb_requests_max = nb_requests;
2893             *best_ist = ist;
2894         }
2895     }
2896
2897     if (!*best_ist)
2898         for (i = 0; i < graph->nb_outputs; i++)
2899             graph->outputs[i]->ost->unavailable = 1;
2900
2901     return 0;
2902 }
2903
2904 /**
2905  * Run a single step of transcoding.
2906  *
2907  * @return  0 for success, <0 for error
2908  */
2909 static int transcode_step(void)
2910 {
2911     OutputStream *ost;
2912     InputStream  *ist;
2913     int ret;
2914
2915     ost = choose_output();
2916     if (!ost) {
2917         if (got_eagain()) {
2918             reset_eagain();
2919             av_usleep(10000);
2920             return 0;
2921         }
2922         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
2923         return AVERROR_EOF;
2924     }
2925
2926     if (ost->filter) {
2927         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
2928             return ret;
2929         if (!ist)
2930             return 0;
2931     } else {
2932         av_assert0(ost->source_index >= 0);
2933         ist = input_streams[ost->source_index];
2934     }
2935
2936     ret = process_input(ist->file_index);
2937     if (ret == AVERROR(EAGAIN)) {
2938         if (input_files[ist->file_index]->eagain)
2939             ost->unavailable = 1;
2940         return 0;
2941     }
2942     if (ret < 0)
2943         return ret == AVERROR_EOF ? 0 : ret;
2944
2945     return reap_filters();
2946 }
2947
2948 /*
2949  * The following code is the main loop of the file converter
2950  */
2951 static int transcode(void)
2952 {
2953     int ret, i;
2954     AVFormatContext *os;
2955     OutputStream *ost;
2956     InputStream *ist;
2957     int64_t timer_start;
2958
2959     ret = transcode_init();
2960     if (ret < 0)
2961         goto fail;
2962
2963     if (stdin_interaction) {
2964         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
2965     }
2966
2967     timer_start = av_gettime();
2968
2969 #if HAVE_PTHREADS
2970     if ((ret = init_input_threads()) < 0)
2971         goto fail;
2972 #endif
2973
2974     while (!received_sigterm) {
2975         int64_t cur_time= av_gettime();
2976
2977         /* if 'q' pressed, exits */
2978         if (stdin_interaction)
2979             if (check_keyboard_interaction(cur_time) < 0)
2980                 break;
2981
2982         /* check if there's any stream where output is still needed */
2983         if (!need_output()) {
2984             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
2985             break;
2986         }
2987
2988         ret = transcode_step();
2989         if (ret < 0) {
2990             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
2991                 continue;
2992
2993             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
2994             break;
2995         }
2996
2997         /* dump report by using the output first video and audio streams */
2998         print_report(0, timer_start, cur_time);
2999     }
3000 #if HAVE_PTHREADS
3001     free_input_threads();
3002 #endif
3003
3004     /* at the end of stream, we must flush the decoder buffers */
3005     for (i = 0; i < nb_input_streams; i++) {
3006         ist = input_streams[i];
3007         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3008             output_packet(ist, NULL);
3009         }
3010     }
3011     flush_encoders();
3012
3013     term_exit();
3014
3015     /* write the trailer if needed and close file */
3016     for (i = 0; i < nb_output_files; i++) {
3017         os = output_files[i]->ctx;
3018         av_write_trailer(os);
3019     }
3020
3021     /* dump report by using the first video and audio streams */
3022     print_report(1, timer_start, av_gettime());
3023
3024     /* close each encoder */
3025     for (i = 0; i < nb_output_streams; i++) {
3026         ost = output_streams[i];
3027         if (ost->encoding_needed) {
3028             av_freep(&ost->st->codec->stats_in);
3029             avcodec_close(ost->st->codec);
3030         }
3031     }
3032
3033     /* close each decoder */
3034     for (i = 0; i < nb_input_streams; i++) {
3035         ist = input_streams[i];
3036         if (ist->decoding_needed) {
3037             avcodec_close(ist->st->codec);
3038         }
3039     }
3040
3041     /* finished ! */
3042     ret = 0;
3043
3044  fail:
3045 #if HAVE_PTHREADS
3046     free_input_threads();
3047 #endif
3048
3049     if (output_streams) {
3050         for (i = 0; i < nb_output_streams; i++) {
3051             ost = output_streams[i];
3052             if (ost) {
3053                 if (ost->stream_copy)
3054                     av_freep(&ost->st->codec->extradata);
3055                 if (ost->logfile) {
3056                     fclose(ost->logfile);
3057                     ost->logfile = NULL;
3058                 }
3059                 av_freep(&ost->st->codec->subtitle_header);
3060                 av_free(ost->forced_kf_pts);
3061                 av_dict_free(&ost->opts);
3062             }
3063         }
3064     }
3065     return ret;
3066 }
3067
3068
3069 static int64_t getutime(void)
3070 {
3071 #if HAVE_GETRUSAGE
3072     struct rusage rusage;
3073
3074     getrusage(RUSAGE_SELF, &rusage);
3075     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3076 #elif HAVE_GETPROCESSTIMES
3077     HANDLE proc;
3078     FILETIME c, e, k, u;
3079     proc = GetCurrentProcess();
3080     GetProcessTimes(proc, &c, &e, &k, &u);
3081     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3082 #else
3083     return av_gettime();
3084 #endif
3085 }
3086
3087 static int64_t getmaxrss(void)
3088 {
3089 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3090     struct rusage rusage;
3091     getrusage(RUSAGE_SELF, &rusage);
3092     return (int64_t)rusage.ru_maxrss * 1024;
3093 #elif HAVE_GETPROCESSMEMORYINFO
3094     HANDLE proc;
3095     PROCESS_MEMORY_COUNTERS memcounters;
3096     proc = GetCurrentProcess();
3097     memcounters.cb = sizeof(memcounters);
3098     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3099     return memcounters.PeakPagefileUsage;
3100 #else
3101     return 0;
3102 #endif
3103 }
3104
3105 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3106 {
3107 }
3108
3109 static void parse_cpuflags(int argc, char **argv, const OptionDef *options)
3110 {
3111     int idx = locate_option(argc, argv, options, "cpuflags");
3112     if (idx && argv[idx + 1])
3113         opt_cpuflags(NULL, "cpuflags", argv[idx + 1]);
3114 }
3115
3116 int main(int argc, char **argv)
3117 {
3118     OptionsContext o = { 0 };
3119     int64_t ti;
3120
3121     reset_options(&o, 0);
3122
3123     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3124     parse_loglevel(argc, argv, options);
3125
3126     if(argc>1 && !strcmp(argv[1], "-d")){
3127         run_as_daemon=1;
3128         av_log_set_callback(log_callback_null);
3129         argc--;
3130         argv++;
3131     }
3132
3133     avcodec_register_all();
3134 #if CONFIG_AVDEVICE
3135     avdevice_register_all();
3136 #endif
3137     avfilter_register_all();
3138     av_register_all();
3139     avformat_network_init();
3140
3141     show_banner(argc, argv, options);
3142
3143     term_init();
3144
3145     parse_cpuflags(argc, argv, options);
3146
3147     /* parse options */
3148     parse_options(&o, argc, argv, options, opt_output_file);
3149
3150     if (nb_output_files <= 0 && nb_input_files == 0) {
3151         show_usage();
3152         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3153         exit_program(1);
3154     }
3155
3156     /* file converter / grab */
3157     if (nb_output_files <= 0) {
3158         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3159         exit_program(1);
3160     }
3161
3162 //     if (nb_input_files == 0) {
3163 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3164 //         exit_program(1);
3165 //     }
3166
3167     current_time = ti = getutime();
3168     if (transcode() < 0)
3169         exit_program(1);
3170     ti = getutime() - ti;
3171     if (do_benchmark) {
3172         int maxrss = getmaxrss() / 1024;
3173         printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss);
3174     }
3175
3176     exit_program(0);
3177     return 0;
3178 }