Merge commit 'bc4620e5d61a4dd9a1f654fadd281a172aab04be'
[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 static void exit_program(void)
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
461 void assert_avoptions(AVDictionary *m)
462 {
463     AVDictionaryEntry *t;
464     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
465         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
466         exit(1);
467     }
468 }
469
470 static void assert_codec_experimental(AVCodecContext *c, int encoder)
471 {
472     const char *codec_string = encoder ? "encoder" : "decoder";
473     AVCodec *codec;
474     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
475         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
476         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
477                 "results.\nAdd '-strict experimental' if you want to use it.\n",
478                 codec_string, c->codec->name);
479         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
480         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
481             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
482                    codec_string, codec->name);
483         exit(1);
484     }
485 }
486
487 static void update_benchmark(const char *fmt, ...)
488 {
489     if (do_benchmark_all) {
490         int64_t t = getutime();
491         va_list va;
492         char buf[1024];
493
494         if (fmt) {
495             va_start(va, fmt);
496             vsnprintf(buf, sizeof(buf), fmt, va);
497             va_end(va);
498             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
499         }
500         current_time = t;
501     }
502 }
503
504 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
505 {
506     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
507     AVCodecContext          *avctx = ost->st->codec;
508     int ret;
509
510     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
511         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
512         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
513
514     if ((avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) && pkt->dts != AV_NOPTS_VALUE) {
515         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
516         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
517             av_log(s, max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG,
518                    "st:%d PTS: %"PRId64" DTS: %"PRId64" < %"PRId64" invalid, clipping\n", pkt->stream_index, pkt->pts, pkt->dts, max);
519             if(pkt->pts >= pkt->dts)
520                 pkt->pts = FFMAX(pkt->pts, max);
521             pkt->dts = max;
522         }
523     }
524
525     /*
526      * Audio encoders may split the packets --  #frames in != #packets out.
527      * But there is no reordering, so we can limit the number of output packets
528      * by simply dropping them here.
529      * Counting encoded video frames needs to be done separately because of
530      * reordering, see do_video_out()
531      */
532     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
533         if (ost->frame_number >= ost->max_frames) {
534             av_free_packet(pkt);
535             return;
536         }
537         ost->frame_number++;
538     }
539
540     while (bsfc) {
541         AVPacket new_pkt = *pkt;
542         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
543                                            &new_pkt.data, &new_pkt.size,
544                                            pkt->data, pkt->size,
545                                            pkt->flags & AV_PKT_FLAG_KEY);
546         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
547             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
548             if(t) {
549                 memcpy(t, new_pkt.data, new_pkt.size);
550                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
551                 new_pkt.data = t;
552                 a = 1;
553             } else
554                 a = AVERROR(ENOMEM);
555         }
556         if (a > 0) {
557             av_free_packet(pkt);
558             new_pkt.destruct = av_destruct_packet;
559         } else if (a < 0) {
560             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
561                    bsfc->filter->name, pkt->stream_index,
562                    avctx->codec ? avctx->codec->name : "copy");
563             print_error("", a);
564             if (exit_on_error)
565                 exit(1);
566         }
567         *pkt = new_pkt;
568
569         bsfc = bsfc->next;
570     }
571
572     pkt->stream_index = ost->index;
573
574     if (debug_ts) {
575         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
576                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
577                 av_get_media_type_string(ost->st->codec->codec_type),
578                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
579                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
580                 pkt->size
581               );
582     }
583
584     ret = av_interleaved_write_frame(s, pkt);
585     if (ret < 0) {
586         print_error("av_interleaved_write_frame()", ret);
587         exit(1);
588     }
589 }
590
591 static void close_output_stream(OutputStream *ost)
592 {
593     OutputFile *of = output_files[ost->file_index];
594
595     ost->finished = 1;
596     if (of->shortest) {
597         int i;
598         for (i = 0; i < of->ctx->nb_streams; i++)
599             output_streams[of->ost_index + i]->finished = 1;
600     }
601 }
602
603 static int check_recording_time(OutputStream *ost)
604 {
605     OutputFile *of = output_files[ost->file_index];
606
607     if (of->recording_time != INT64_MAX &&
608         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
609                       AV_TIME_BASE_Q) >= 0) {
610         close_output_stream(ost);
611         return 0;
612     }
613     return 1;
614 }
615
616 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
617                          AVFrame *frame)
618 {
619     AVCodecContext *enc = ost->st->codec;
620     AVPacket pkt;
621     int got_packet = 0;
622
623     av_init_packet(&pkt);
624     pkt.data = NULL;
625     pkt.size = 0;
626
627     if (!check_recording_time(ost))
628         return;
629
630     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
631         frame->pts = ost->sync_opts;
632     ost->sync_opts = frame->pts + frame->nb_samples;
633
634     av_assert0(pkt.size || !pkt.data);
635     update_benchmark(NULL);
636     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
637         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
638         exit(1);
639     }
640     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
641
642     if (got_packet) {
643         if (pkt.pts != AV_NOPTS_VALUE)
644             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
645         if (pkt.dts != AV_NOPTS_VALUE)
646             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
647         if (pkt.duration > 0)
648             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
649
650         if (debug_ts) {
651             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
652                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
653                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
654                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
655         }
656
657         audio_size += pkt.size;
658         write_frame(s, &pkt, ost);
659
660         av_free_packet(&pkt);
661     }
662 }
663
664 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
665 {
666     AVCodecContext *dec;
667     AVPicture *picture2;
668     AVPicture picture_tmp;
669     uint8_t *buf = 0;
670
671     dec = ist->st->codec;
672
673     /* deinterlace : must be done before any resize */
674     if (do_deinterlace) {
675         int size;
676
677         /* create temporary picture */
678         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
679         buf  = av_malloc(size);
680         if (!buf)
681             return;
682
683         picture2 = &picture_tmp;
684         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
685
686         if (avpicture_deinterlace(picture2, picture,
687                                  dec->pix_fmt, dec->width, dec->height) < 0) {
688             /* if error, do not deinterlace */
689             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
690             av_free(buf);
691             buf = NULL;
692             picture2 = picture;
693         }
694     } else {
695         picture2 = picture;
696     }
697
698     if (picture != picture2)
699         *picture = *picture2;
700     *bufp = buf;
701 }
702
703 static void do_subtitle_out(AVFormatContext *s,
704                             OutputStream *ost,
705                             InputStream *ist,
706                             AVSubtitle *sub)
707 {
708     int subtitle_out_max_size = 1024 * 1024;
709     int subtitle_out_size, nb, i;
710     AVCodecContext *enc;
711     AVPacket pkt;
712     int64_t pts;
713
714     if (sub->pts == AV_NOPTS_VALUE) {
715         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
716         if (exit_on_error)
717             exit(1);
718         return;
719     }
720
721     enc = ost->st->codec;
722
723     if (!subtitle_out) {
724         subtitle_out = av_malloc(subtitle_out_max_size);
725     }
726
727     /* Note: DVB subtitle need one packet to draw them and one other
728        packet to clear them */
729     /* XXX: signal it in the codec context ? */
730     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
731         nb = 2;
732     else
733         nb = 1;
734
735     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
736     pts = sub->pts - output_files[ost->file_index]->start_time;
737     for (i = 0; i < nb; i++) {
738         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
739         if (!check_recording_time(ost))
740             return;
741
742         sub->pts = pts;
743         // start_display_time is required to be 0
744         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
745         sub->end_display_time  -= sub->start_display_time;
746         sub->start_display_time = 0;
747         if (i == 1)
748             sub->num_rects = 0;
749         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
750                                                     subtitle_out_max_size, sub);
751         if (subtitle_out_size < 0) {
752             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
753             exit(1);
754         }
755
756         av_init_packet(&pkt);
757         pkt.data = subtitle_out;
758         pkt.size = subtitle_out_size;
759         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
760         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
761         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
762             /* XXX: the pts correction is handled here. Maybe handling
763                it in the codec would be better */
764             if (i == 0)
765                 pkt.pts += 90 * sub->start_display_time;
766             else
767                 pkt.pts += 90 * sub->end_display_time;
768         }
769         subtitle_size += pkt.size;
770         write_frame(s, &pkt, ost);
771     }
772 }
773
774 static void do_video_out(AVFormatContext *s,
775                          OutputStream *ost,
776                          AVFrame *in_picture)
777 {
778     int ret, format_video_sync;
779     AVPacket pkt;
780     AVCodecContext *enc = ost->st->codec;
781     int nb_frames, i;
782     double sync_ipts, delta;
783     double duration = 0;
784     int frame_size = 0;
785     InputStream *ist = NULL;
786
787     if (ost->source_index >= 0)
788         ist = input_streams[ost->source_index];
789
790     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
791         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
792
793     sync_ipts = in_picture->pts;
794     delta = sync_ipts - ost->sync_opts + duration;
795
796     /* by default, we output a single frame */
797     nb_frames = 1;
798
799     format_video_sync = video_sync_method;
800     if (format_video_sync == VSYNC_AUTO)
801         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
802
803     switch (format_video_sync) {
804     case VSYNC_CFR:
805         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
806         if (delta < -1.1)
807             nb_frames = 0;
808         else if (delta > 1.1)
809             nb_frames = lrintf(delta);
810         break;
811     case VSYNC_VFR:
812         if (delta <= -0.6)
813             nb_frames = 0;
814         else if (delta > 0.6)
815             ost->sync_opts = lrint(sync_ipts);
816         break;
817     case VSYNC_DROP:
818     case VSYNC_PASSTHROUGH:
819         ost->sync_opts = lrint(sync_ipts);
820         break;
821     default:
822         av_assert0(0);
823     }
824
825     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
826     if (nb_frames == 0) {
827         nb_frames_drop++;
828         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
829         return;
830     } else if (nb_frames > 1) {
831         if (nb_frames > dts_error_threshold * 30) {
832             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
833             nb_frames_drop++;
834             return;
835         }
836         nb_frames_dup += nb_frames - 1;
837         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
838     }
839
840   /* duplicates frame if needed */
841   for (i = 0; i < nb_frames; i++) {
842     av_init_packet(&pkt);
843     pkt.data = NULL;
844     pkt.size = 0;
845
846     in_picture->pts = ost->sync_opts;
847
848     if (!check_recording_time(ost))
849         return;
850
851     if (s->oformat->flags & AVFMT_RAWPICTURE &&
852         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
853         /* raw pictures are written as AVPicture structure to
854            avoid any copies. We support temporarily the older
855            method. */
856         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
857         enc->coded_frame->top_field_first  = in_picture->top_field_first;
858         pkt.data   = (uint8_t *)in_picture;
859         pkt.size   =  sizeof(AVPicture);
860         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
861         pkt.flags |= AV_PKT_FLAG_KEY;
862
863         video_size += pkt.size;
864         write_frame(s, &pkt, ost);
865     } else {
866         int got_packet;
867         AVFrame big_picture;
868
869         big_picture = *in_picture;
870         /* better than nothing: use input picture interlaced
871            settings */
872         big_picture.interlaced_frame = in_picture->interlaced_frame;
873         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
874             if (ost->top_field_first == -1)
875                 big_picture.top_field_first = in_picture->top_field_first;
876             else
877                 big_picture.top_field_first = !!ost->top_field_first;
878         }
879
880         big_picture.quality = ost->st->codec->global_quality;
881         if (!enc->me_threshold)
882             big_picture.pict_type = 0;
883         if (ost->forced_kf_index < ost->forced_kf_count &&
884             big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
885             big_picture.pict_type = AV_PICTURE_TYPE_I;
886             ost->forced_kf_index++;
887         }
888         update_benchmark(NULL);
889         ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
890         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
891         if (ret < 0) {
892             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
893             exit(1);
894         }
895
896         if (got_packet) {
897             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
898                 pkt.pts = ost->sync_opts;
899
900             if (pkt.pts != AV_NOPTS_VALUE)
901                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
902             if (pkt.dts != AV_NOPTS_VALUE)
903                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
904
905             if (debug_ts) {
906                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
907                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
908                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
909                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
910             }
911
912             frame_size = pkt.size;
913             video_size += pkt.size;
914             write_frame(s, &pkt, ost);
915             av_free_packet(&pkt);
916
917             /* if two pass, output log */
918             if (ost->logfile && enc->stats_out) {
919                 fprintf(ost->logfile, "%s", enc->stats_out);
920             }
921         }
922     }
923     ost->sync_opts++;
924     /*
925      * For video, number of frames in == number of packets out.
926      * But there may be reordering, so we can't throw away frames on encoder
927      * flush, we need to limit them here, before they go into encoder.
928      */
929     ost->frame_number++;
930   }
931
932     if (vstats_filename && frame_size)
933         do_video_stats(output_files[ost->file_index]->ctx, ost, frame_size);
934 }
935
936 static double psnr(double d)
937 {
938     return -10.0 * log(d) / log(10.0);
939 }
940
941 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
942                            int frame_size)
943 {
944     AVCodecContext *enc;
945     int frame_number;
946     double ti1, bitrate, avg_bitrate;
947
948     /* this is executed just the first time do_video_stats is called */
949     if (!vstats_file) {
950         vstats_file = fopen(vstats_filename, "w");
951         if (!vstats_file) {
952             perror("fopen");
953             exit(1);
954         }
955     }
956
957     enc = ost->st->codec;
958     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
959         frame_number = ost->frame_number;
960         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
961         if (enc->flags&CODEC_FLAG_PSNR)
962             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
963
964         fprintf(vstats_file,"f_size= %6d ", frame_size);
965         /* compute pts value */
966         ti1 = ost->sync_opts * av_q2d(enc->time_base);
967         if (ti1 < 0.01)
968             ti1 = 0.01;
969
970         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
971         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
972         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
973                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
974         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
975     }
976 }
977
978 /*
979  * Get and encode new output from any of the filtergraphs, without causing
980  * activity.
981  *
982  * @return  0 for success, <0 for severe errors
983  */
984 static int reap_filters(void)
985 {
986     AVFilterBufferRef *picref;
987     AVFrame *filtered_frame = NULL;
988     int i;
989     int64_t frame_pts;
990
991     /* Reap all buffers present in the buffer sinks */
992     for (i = 0; i < nb_output_streams; i++) {
993         OutputStream *ost = output_streams[i];
994         OutputFile    *of = output_files[ost->file_index];
995         int ret = 0;
996
997         if (!ost->filter)
998             continue;
999
1000         if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1001             return AVERROR(ENOMEM);
1002         } else
1003             avcodec_get_frame_defaults(ost->filtered_frame);
1004         filtered_frame = ost->filtered_frame;
1005
1006         while (1) {
1007             ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
1008                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1009             if (ret < 0) {
1010                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1011                     char buf[256];
1012                     av_strerror(ret, buf, sizeof(buf));
1013                     av_log(NULL, AV_LOG_WARNING,
1014                            "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
1015                 }
1016                 break;
1017             }
1018             frame_pts = AV_NOPTS_VALUE;
1019             if (picref->pts != AV_NOPTS_VALUE) {
1020                 filtered_frame->pts = frame_pts = av_rescale_q(picref->pts,
1021                                                 ost->filter->filter->inputs[0]->time_base,
1022                                                 ost->st->codec->time_base) -
1023                                     av_rescale_q(of->start_time,
1024                                                 AV_TIME_BASE_Q,
1025                                                 ost->st->codec->time_base);
1026
1027                 if (of->start_time && filtered_frame->pts < 0) {
1028                     avfilter_unref_buffer(picref);
1029                     continue;
1030                 }
1031             }
1032             //if (ost->source_index >= 0)
1033             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1034
1035
1036             switch (ost->filter->filter->inputs[0]->type) {
1037             case AVMEDIA_TYPE_VIDEO:
1038                 avfilter_copy_buf_props(filtered_frame, picref);
1039                 filtered_frame->pts = frame_pts;
1040                 if (!ost->frame_aspect_ratio)
1041                     ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
1042
1043                 do_video_out(of->ctx, ost, filtered_frame);
1044                 break;
1045             case AVMEDIA_TYPE_AUDIO:
1046                 avfilter_copy_buf_props(filtered_frame, picref);
1047                 filtered_frame->pts = frame_pts;
1048                 do_audio_out(of->ctx, ost, filtered_frame);
1049                 break;
1050             default:
1051                 // TODO support subtitle filters
1052                 av_assert0(0);
1053             }
1054
1055             avfilter_unref_buffer(picref);
1056         }
1057     }
1058
1059     return 0;
1060 }
1061
1062 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1063 {
1064     char buf[1024];
1065     AVBPrint buf_script;
1066     OutputStream *ost;
1067     AVFormatContext *oc;
1068     int64_t total_size;
1069     AVCodecContext *enc;
1070     int frame_number, vid, i;
1071     double bitrate;
1072     int64_t pts = INT64_MIN;
1073     static int64_t last_time = -1;
1074     static int qp_histogram[52];
1075     int hours, mins, secs, us;
1076
1077     if (!print_stats && !is_last_report && !progress_avio)
1078         return;
1079
1080     if (!is_last_report) {
1081         if (last_time == -1) {
1082             last_time = cur_time;
1083             return;
1084         }
1085         if ((cur_time - last_time) < 500000)
1086             return;
1087         last_time = cur_time;
1088     }
1089
1090
1091     oc = output_files[0]->ctx;
1092
1093     total_size = avio_size(oc->pb);
1094     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
1095         total_size = avio_tell(oc->pb);
1096         if (total_size < 0)
1097             total_size = 0;
1098     }
1099
1100     buf[0] = '\0';
1101     vid = 0;
1102     av_bprint_init(&buf_script, 0, 1);
1103     for (i = 0; i < nb_output_streams; i++) {
1104         float q = -1;
1105         ost = output_streams[i];
1106         enc = ost->st->codec;
1107         if (!ost->stream_copy && enc->coded_frame)
1108             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1109         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1110             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1111             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1112                        ost->file_index, ost->index, q);
1113         }
1114         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1115             float fps, t = (cur_time-timer_start) / 1000000.0;
1116
1117             frame_number = ost->frame_number;
1118             fps = t > 1 ? frame_number / t : 0;
1119             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1120                      frame_number, fps < 9.95, fps, q);
1121             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1122             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1123             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1124                        ost->file_index, ost->index, q);
1125             if (is_last_report)
1126                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1127             if (qp_hist) {
1128                 int j;
1129                 int qp = lrintf(q);
1130                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1131                     qp_histogram[qp]++;
1132                 for (j = 0; j < 32; j++)
1133                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1134             }
1135             if (enc->flags&CODEC_FLAG_PSNR) {
1136                 int j;
1137                 double error, error_sum = 0;
1138                 double scale, scale_sum = 0;
1139                 double p;
1140                 char type[3] = { 'Y','U','V' };
1141                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1142                 for (j = 0; j < 3; j++) {
1143                     if (is_last_report) {
1144                         error = enc->error[j];
1145                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1146                     } else {
1147                         error = enc->coded_frame->error[j];
1148                         scale = enc->width * enc->height * 255.0 * 255.0;
1149                     }
1150                     if (j)
1151                         scale /= 4;
1152                     error_sum += error;
1153                     scale_sum += scale;
1154                     p = psnr(error / scale);
1155                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1156                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1157                                ost->file_index, ost->index, type[i] | 32, p);
1158                 }
1159                 p = psnr(error_sum / scale_sum);
1160                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1161                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1162                            ost->file_index, ost->index, p);
1163             }
1164             vid = 1;
1165         }
1166         /* compute min output value */
1167         if ((is_last_report || !ost->finished) && ost->st->pts.val != AV_NOPTS_VALUE)
1168             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1169                                           ost->st->time_base, AV_TIME_BASE_Q));
1170     }
1171
1172     secs = pts / AV_TIME_BASE;
1173     us = pts % AV_TIME_BASE;
1174     mins = secs / 60;
1175     secs %= 60;
1176     hours = mins / 60;
1177     mins %= 60;
1178
1179     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1180
1181     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1182              "size=%8.0fkB time=", total_size / 1024.0);
1183     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1184              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1185              (100 * us) / AV_TIME_BASE);
1186     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1187              "bitrate=%6.1fkbits/s", bitrate);
1188     av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1189     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1190     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1191                hours, mins, secs, us);
1192
1193     if (nb_frames_dup || nb_frames_drop)
1194         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1195                 nb_frames_dup, nb_frames_drop);
1196     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1197     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1198
1199     if (print_stats || is_last_report) {
1200     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1201
1202     fflush(stderr);
1203     }
1204
1205     if (progress_avio) {
1206         av_bprintf(&buf_script, "progress=%s\n",
1207                    is_last_report ? "end" : "continue");
1208         avio_write(progress_avio, buf_script.str,
1209                    FFMIN(buf_script.len, buf_script.size - 1));
1210         avio_flush(progress_avio);
1211         av_bprint_finalize(&buf_script, NULL);
1212         if (is_last_report) {
1213             avio_close(progress_avio);
1214             progress_avio = NULL;
1215         }
1216     }
1217
1218     if (is_last_report) {
1219         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1220         av_log(NULL, AV_LOG_INFO, "\n");
1221         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1222                video_size / 1024.0,
1223                audio_size / 1024.0,
1224                subtitle_size / 1024.0,
1225                extra_size / 1024.0,
1226                100.0 * (total_size - raw) / raw
1227         );
1228         if(video_size + audio_size + subtitle_size + extra_size == 0){
1229             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1230         }
1231     }
1232 }
1233
1234 static void flush_encoders(void)
1235 {
1236     int i, ret;
1237
1238     for (i = 0; i < nb_output_streams; i++) {
1239         OutputStream   *ost = output_streams[i];
1240         AVCodecContext *enc = ost->st->codec;
1241         AVFormatContext *os = output_files[ost->file_index]->ctx;
1242         int stop_encoding = 0;
1243
1244         if (!ost->encoding_needed)
1245             continue;
1246
1247         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1248             continue;
1249         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1250             continue;
1251
1252         for (;;) {
1253             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1254             const char *desc;
1255             int64_t *size;
1256
1257             switch (ost->st->codec->codec_type) {
1258             case AVMEDIA_TYPE_AUDIO:
1259                 encode = avcodec_encode_audio2;
1260                 desc   = "Audio";
1261                 size   = &audio_size;
1262                 break;
1263             case AVMEDIA_TYPE_VIDEO:
1264                 encode = avcodec_encode_video2;
1265                 desc   = "Video";
1266                 size   = &video_size;
1267                 break;
1268             default:
1269                 stop_encoding = 1;
1270             }
1271
1272             if (encode) {
1273                 AVPacket pkt;
1274                 int got_packet;
1275                 av_init_packet(&pkt);
1276                 pkt.data = NULL;
1277                 pkt.size = 0;
1278
1279                 update_benchmark(NULL);
1280                 ret = encode(enc, &pkt, NULL, &got_packet);
1281                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1282                 if (ret < 0) {
1283                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1284                     exit(1);
1285                 }
1286                 *size += pkt.size;
1287                 if (ost->logfile && enc->stats_out) {
1288                     fprintf(ost->logfile, "%s", enc->stats_out);
1289                 }
1290                 if (!got_packet) {
1291                     stop_encoding = 1;
1292                     break;
1293                 }
1294                 if (pkt.pts != AV_NOPTS_VALUE)
1295                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1296                 if (pkt.dts != AV_NOPTS_VALUE)
1297                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1298                 write_frame(os, &pkt, ost);
1299             }
1300
1301             if (stop_encoding)
1302                 break;
1303         }
1304     }
1305 }
1306
1307 /*
1308  * Check whether a packet from ist should be written into ost at this time
1309  */
1310 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1311 {
1312     OutputFile *of = output_files[ost->file_index];
1313     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1314
1315     if (ost->source_index != ist_index)
1316         return 0;
1317
1318     if (of->start_time && ist->pts < of->start_time)
1319         return 0;
1320
1321     return 1;
1322 }
1323
1324 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1325 {
1326     OutputFile *of = output_files[ost->file_index];
1327     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1328     AVPicture pict;
1329     AVPacket opkt;
1330
1331     av_init_packet(&opkt);
1332
1333     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1334         !ost->copy_initial_nonkeyframes)
1335         return;
1336
1337     if (!ost->frame_number && ist->pts < of->start_time &&
1338         !ost->copy_prior_start)
1339         return;
1340
1341     if (of->recording_time != INT64_MAX &&
1342         ist->pts >= of->recording_time + of->start_time) {
1343         close_output_stream(ost);
1344         return;
1345     }
1346
1347     /* force the input stream PTS */
1348     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1349         audio_size += pkt->size;
1350     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1351         video_size += pkt->size;
1352         ost->sync_opts++;
1353     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1354         subtitle_size += pkt->size;
1355     }
1356
1357     if (pkt->pts != AV_NOPTS_VALUE)
1358         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1359     else
1360         opkt.pts = AV_NOPTS_VALUE;
1361
1362     if (pkt->dts == AV_NOPTS_VALUE)
1363         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1364     else
1365         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1366     opkt.dts -= ost_tb_start_time;
1367
1368     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1369     opkt.flags    = pkt->flags;
1370
1371     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1372     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1373        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1374        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1375        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1376        ) {
1377         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1378             opkt.destruct = av_destruct_packet;
1379     } else {
1380         opkt.data = pkt->data;
1381         opkt.size = pkt->size;
1382     }
1383
1384     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1385         /* store AVPicture in AVPacket, as expected by the output format */
1386         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1387         opkt.data = (uint8_t *)&pict;
1388         opkt.size = sizeof(AVPicture);
1389         opkt.flags |= AV_PKT_FLAG_KEY;
1390     }
1391
1392     write_frame(of->ctx, &opkt, ost);
1393     ost->st->codec->frame_number++;
1394     av_free_packet(&opkt);
1395 }
1396
1397 static void rate_emu_sleep(InputStream *ist)
1398 {
1399     if (input_files[ist->file_index]->rate_emu) {
1400         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
1401         int64_t now = av_gettime() - ist->start;
1402         if (pts > now)
1403             av_usleep(pts - now);
1404     }
1405 }
1406
1407 int guess_input_channel_layout(InputStream *ist)
1408 {
1409     AVCodecContext *dec = ist->st->codec;
1410
1411     if (!dec->channel_layout) {
1412         char layout_name[256];
1413
1414         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1415         if (!dec->channel_layout)
1416             return 0;
1417         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1418                                      dec->channels, dec->channel_layout);
1419         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1420                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1421     }
1422     return 1;
1423 }
1424
1425 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1426 {
1427     AVFrame *decoded_frame;
1428     AVCodecContext *avctx = ist->st->codec;
1429     int i, ret, resample_changed;
1430     AVRational decoded_frame_tb;
1431
1432     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1433         return AVERROR(ENOMEM);
1434     else
1435         avcodec_get_frame_defaults(ist->decoded_frame);
1436     decoded_frame = ist->decoded_frame;
1437
1438     update_benchmark(NULL);
1439     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1440     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1441
1442     if (ret >= 0 && avctx->sample_rate <= 0) {
1443         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1444         ret = AVERROR_INVALIDDATA;
1445     }
1446
1447     if (!*got_output || ret < 0) {
1448         if (!pkt->size) {
1449             for (i = 0; i < ist->nb_filters; i++)
1450                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1451         }
1452         return ret;
1453     }
1454
1455 #if 1
1456     /* increment next_dts to use for the case where the input stream does not
1457        have timestamps or there are multiple frames in the packet */
1458     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1459                      avctx->sample_rate;
1460     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1461                      avctx->sample_rate;
1462 #endif
1463
1464     rate_emu_sleep(ist);
1465
1466     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1467                        ist->resample_channels       != avctx->channels               ||
1468                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1469                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1470     if (resample_changed) {
1471         char layout1[64], layout2[64];
1472
1473         if (!guess_input_channel_layout(ist)) {
1474             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1475                    "layout for Input Stream #%d.%d\n", ist->file_index,
1476                    ist->st->index);
1477             exit(1);
1478         }
1479         decoded_frame->channel_layout = avctx->channel_layout;
1480
1481         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1482                                      ist->resample_channel_layout);
1483         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1484                                      decoded_frame->channel_layout);
1485
1486         av_log(NULL, AV_LOG_INFO,
1487                "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",
1488                ist->file_index, ist->st->index,
1489                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1490                ist->resample_channels, layout1,
1491                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1492                avctx->channels, layout2);
1493
1494         ist->resample_sample_fmt     = decoded_frame->format;
1495         ist->resample_sample_rate    = decoded_frame->sample_rate;
1496         ist->resample_channel_layout = decoded_frame->channel_layout;
1497         ist->resample_channels       = avctx->channels;
1498
1499         for (i = 0; i < nb_filtergraphs; i++)
1500             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1501                 FilterGraph *fg = filtergraphs[i];
1502                 int j;
1503                 if (configure_filtergraph(fg) < 0) {
1504                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1505                     exit(1);
1506                 }
1507                 for (j = 0; j < fg->nb_outputs; j++) {
1508                     OutputStream *ost = fg->outputs[j]->ost;
1509                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1510                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1511                         av_buffersink_set_frame_size(ost->filter->filter,
1512                                                      ost->st->codec->frame_size);
1513                 }
1514             }
1515     }
1516
1517     /* if the decoder provides a pts, use it instead of the last packet pts.
1518        the decoder could be delaying output by a packet or more. */
1519     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1520         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1521         decoded_frame_tb   = avctx->time_base;
1522     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1523         decoded_frame->pts = decoded_frame->pkt_pts;
1524         pkt->pts           = AV_NOPTS_VALUE;
1525         decoded_frame_tb   = ist->st->time_base;
1526     } else if (pkt->pts != AV_NOPTS_VALUE) {
1527         decoded_frame->pts = pkt->pts;
1528         pkt->pts           = AV_NOPTS_VALUE;
1529         decoded_frame_tb   = ist->st->time_base;
1530     }else {
1531         decoded_frame->pts = ist->dts;
1532         decoded_frame_tb   = AV_TIME_BASE_Q;
1533     }
1534     if (decoded_frame->pts != AV_NOPTS_VALUE)
1535         decoded_frame->pts = av_rescale_q(decoded_frame->pts,
1536                                           decoded_frame_tb,
1537                                           (AVRational){1, ist->st->codec->sample_rate});
1538     for (i = 0; i < ist->nb_filters; i++)
1539         av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame,
1540                                AV_BUFFERSRC_FLAG_PUSH);
1541
1542     decoded_frame->pts = AV_NOPTS_VALUE;
1543
1544     return ret;
1545 }
1546
1547 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1548 {
1549     AVFrame *decoded_frame;
1550     void *buffer_to_free = NULL;
1551     int i, ret = 0, resample_changed;
1552     int64_t best_effort_timestamp;
1553     AVRational *frame_sample_aspect;
1554
1555     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1556         return AVERROR(ENOMEM);
1557     else
1558         avcodec_get_frame_defaults(ist->decoded_frame);
1559     decoded_frame = ist->decoded_frame;
1560     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1561
1562     update_benchmark(NULL);
1563     ret = avcodec_decode_video2(ist->st->codec,
1564                                 decoded_frame, got_output, pkt);
1565     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1566     if (!*got_output || ret < 0) {
1567         if (!pkt->size) {
1568             for (i = 0; i < ist->nb_filters; i++)
1569                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1570         }
1571         return ret;
1572     }
1573
1574     if(ist->top_field_first>=0)
1575         decoded_frame->top_field_first = ist->top_field_first;
1576
1577     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1578     if(best_effort_timestamp != AV_NOPTS_VALUE)
1579         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1580
1581     if (debug_ts) {
1582         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1583                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1584                 ist->st->index, av_ts2str(decoded_frame->pts),
1585                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1586                 best_effort_timestamp,
1587                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1588                 decoded_frame->key_frame, decoded_frame->pict_type);
1589     }
1590
1591     pkt->size = 0;
1592     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1593
1594     rate_emu_sleep(ist);
1595
1596     if (ist->st->sample_aspect_ratio.num)
1597         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1598
1599     resample_changed = ist->resample_width   != decoded_frame->width  ||
1600                        ist->resample_height  != decoded_frame->height ||
1601                        ist->resample_pix_fmt != decoded_frame->format;
1602     if (resample_changed) {
1603         av_log(NULL, AV_LOG_INFO,
1604                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1605                ist->file_index, ist->st->index,
1606                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1607                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1608
1609         ist->resample_width   = decoded_frame->width;
1610         ist->resample_height  = decoded_frame->height;
1611         ist->resample_pix_fmt = decoded_frame->format;
1612
1613         for (i = 0; i < nb_filtergraphs; i++)
1614             if (ist_in_filtergraph(filtergraphs[i], ist) &&
1615                 configure_filtergraph(filtergraphs[i]) < 0) {
1616                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1617                 exit(1);
1618             }
1619     }
1620
1621     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1622     for (i = 0; i < ist->nb_filters; i++) {
1623         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
1624                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
1625                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
1626
1627         if (!frame_sample_aspect->num)
1628             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1629         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
1630             FrameBuffer      *buf = decoded_frame->opaque;
1631             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1632                                         decoded_frame->data, decoded_frame->linesize,
1633                                         AV_PERM_READ | AV_PERM_PRESERVE,
1634                                         ist->st->codec->width, ist->st->codec->height,
1635                                         ist->st->codec->pix_fmt);
1636
1637             avfilter_copy_frame_props(fb, decoded_frame);
1638             fb->buf->priv           = buf;
1639             fb->buf->free           = filter_release_buffer;
1640
1641             av_assert0(buf->refcount>0);
1642             buf->refcount++;
1643             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
1644                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
1645                                  AV_BUFFERSRC_FLAG_NO_COPY |
1646                                  AV_BUFFERSRC_FLAG_PUSH);
1647         } else
1648         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, AV_BUFFERSRC_FLAG_PUSH)<0) {
1649             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
1650             exit(1);
1651         }
1652
1653     }
1654
1655     av_free(buffer_to_free);
1656     return ret;
1657 }
1658
1659 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1660 {
1661     AVSubtitle subtitle;
1662     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1663                                           &subtitle, got_output, pkt);
1664     if (ret < 0 || !*got_output) {
1665         if (!pkt->size)
1666             sub2video_flush(ist);
1667         return ret;
1668     }
1669
1670     if (ist->fix_sub_duration) {
1671         if (ist->prev_sub.got_output) {
1672             int end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1673                                  1000, AV_TIME_BASE);
1674             if (end < ist->prev_sub.subtitle.end_display_time) {
1675                 av_log(ist->st->codec, AV_LOG_DEBUG,
1676                        "Subtitle duration reduced from %d to %d\n",
1677                        ist->prev_sub.subtitle.end_display_time, end);
1678                 ist->prev_sub.subtitle.end_display_time = end;
1679             }
1680         }
1681         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1682         FFSWAP(int,        ret,         ist->prev_sub.ret);
1683         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1684     }
1685
1686     sub2video_update(ist, &subtitle);
1687
1688     if (!*got_output || !subtitle.num_rects)
1689         return ret;
1690
1691     rate_emu_sleep(ist);
1692
1693     for (i = 0; i < nb_output_streams; i++) {
1694         OutputStream *ost = output_streams[i];
1695
1696         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1697             continue;
1698
1699         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
1700     }
1701
1702     avsubtitle_free(&subtitle);
1703     return ret;
1704 }
1705
1706 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1707 static int output_packet(InputStream *ist, const AVPacket *pkt)
1708 {
1709     int ret = 0, i;
1710     int got_output;
1711
1712     AVPacket avpkt;
1713     if (!ist->saw_first_ts) {
1714         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;
1715         ist->pts = 0;
1716         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1717             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1718             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1719         }
1720         ist->saw_first_ts = 1;
1721     }
1722
1723     if (ist->next_dts == AV_NOPTS_VALUE)
1724         ist->next_dts = ist->dts;
1725     if (ist->next_pts == AV_NOPTS_VALUE)
1726         ist->next_pts = ist->pts;
1727
1728     if (pkt == NULL) {
1729         /* EOF handling */
1730         av_init_packet(&avpkt);
1731         avpkt.data = NULL;
1732         avpkt.size = 0;
1733         goto handle_eof;
1734     } else {
1735         avpkt = *pkt;
1736     }
1737
1738     if (pkt->dts != AV_NOPTS_VALUE) {
1739         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1740         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1741             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1742     }
1743
1744     // while we have more to decode or while the decoder did output something on EOF
1745     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1746         int duration;
1747     handle_eof:
1748
1749         ist->pts = ist->next_pts;
1750         ist->dts = ist->next_dts;
1751
1752         if (avpkt.size && avpkt.size != pkt->size) {
1753             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1754                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1755             ist->showed_multi_packet_warning = 1;
1756         }
1757
1758         switch (ist->st->codec->codec_type) {
1759         case AVMEDIA_TYPE_AUDIO:
1760             ret = decode_audio    (ist, &avpkt, &got_output);
1761             break;
1762         case AVMEDIA_TYPE_VIDEO:
1763             ret = decode_video    (ist, &avpkt, &got_output);
1764             if (avpkt.duration) {
1765                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1766             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1767                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1768                 duration = ((int64_t)AV_TIME_BASE *
1769                                 ist->st->codec->time_base.num * ticks) /
1770                                 ist->st->codec->time_base.den;
1771             } else
1772                 duration = 0;
1773
1774             if(ist->dts != AV_NOPTS_VALUE && duration) {
1775                 ist->next_dts += duration;
1776             }else
1777                 ist->next_dts = AV_NOPTS_VALUE;
1778
1779             if (got_output)
1780                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1781             break;
1782         case AVMEDIA_TYPE_SUBTITLE:
1783             ret = transcode_subtitles(ist, &avpkt, &got_output);
1784             break;
1785         default:
1786             return -1;
1787         }
1788
1789         if (ret < 0)
1790             return ret;
1791
1792         avpkt.dts=
1793         avpkt.pts= AV_NOPTS_VALUE;
1794
1795         // touch data and size only if not EOF
1796         if (pkt) {
1797             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1798                 ret = avpkt.size;
1799             avpkt.data += ret;
1800             avpkt.size -= ret;
1801         }
1802         if (!got_output) {
1803             continue;
1804         }
1805     }
1806
1807     /* handle stream copy */
1808     if (!ist->decoding_needed) {
1809         rate_emu_sleep(ist);
1810         ist->dts = ist->next_dts;
1811         switch (ist->st->codec->codec_type) {
1812         case AVMEDIA_TYPE_AUDIO:
1813             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1814                              ist->st->codec->sample_rate;
1815             break;
1816         case AVMEDIA_TYPE_VIDEO:
1817             if (pkt->duration) {
1818                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1819             } else if(ist->st->codec->time_base.num != 0) {
1820                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1821                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1822                                   ist->st->codec->time_base.num * ticks) /
1823                                   ist->st->codec->time_base.den;
1824             }
1825             break;
1826         }
1827         ist->pts = ist->dts;
1828         ist->next_pts = ist->next_dts;
1829     }
1830     for (i = 0; pkt && i < nb_output_streams; i++) {
1831         OutputStream *ost = output_streams[i];
1832
1833         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1834             continue;
1835
1836         do_streamcopy(ist, ost, pkt);
1837     }
1838
1839     return 0;
1840 }
1841
1842 static void print_sdp(void)
1843 {
1844     char sdp[2048];
1845     int i;
1846     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1847
1848     if (!avc)
1849         exit(1);
1850     for (i = 0; i < nb_output_files; i++)
1851         avc[i] = output_files[i]->ctx;
1852
1853     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1854     printf("SDP:\n%s\n", sdp);
1855     fflush(stdout);
1856     av_freep(&avc);
1857 }
1858
1859 static int init_input_stream(int ist_index, char *error, int error_len)
1860 {
1861     InputStream *ist = input_streams[ist_index];
1862
1863     if (ist->decoding_needed) {
1864         AVCodec *codec = ist->dec;
1865         if (!codec) {
1866             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1867                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1868             return AVERROR(EINVAL);
1869         }
1870
1871         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
1872         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
1873             ist->st->codec->get_buffer     = codec_get_buffer;
1874             ist->st->codec->release_buffer = codec_release_buffer;
1875             ist->st->codec->opaque         = &ist->buffer_pool;
1876         }
1877
1878         if (!av_dict_get(ist->opts, "threads", NULL, 0))
1879             av_dict_set(&ist->opts, "threads", "auto", 0);
1880         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
1881             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1882                     ist->file_index, ist->st->index);
1883             return AVERROR(EINVAL);
1884         }
1885         assert_codec_experimental(ist->st->codec, 0);
1886         assert_avoptions(ist->opts);
1887     }
1888
1889     ist->next_pts = AV_NOPTS_VALUE;
1890     ist->next_dts = AV_NOPTS_VALUE;
1891     ist->is_start = 1;
1892
1893     return 0;
1894 }
1895
1896 static InputStream *get_input_stream(OutputStream *ost)
1897 {
1898     if (ost->source_index >= 0)
1899         return input_streams[ost->source_index];
1900     return NULL;
1901 }
1902
1903 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1904                                     AVCodecContext *avctx)
1905 {
1906     char *p;
1907     int n = 1, i;
1908     int64_t t;
1909
1910     for (p = kf; *p; p++)
1911         if (*p == ',')
1912             n++;
1913     ost->forced_kf_count = n;
1914     ost->forced_kf_pts   = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1915     if (!ost->forced_kf_pts) {
1916         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1917         exit(1);
1918     }
1919
1920     p = kf;
1921     for (i = 0; i < n; i++) {
1922         char *next = strchr(p, ',');
1923
1924         if (next)
1925             *next++ = 0;
1926
1927         t = parse_time_or_die("force_key_frames", p, 1);
1928         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1929
1930         p = next;
1931     }
1932 }
1933
1934 static void report_new_stream(int input_index, AVPacket *pkt)
1935 {
1936     InputFile *file = input_files[input_index];
1937     AVStream *st = file->ctx->streams[pkt->stream_index];
1938
1939     if (pkt->stream_index < file->nb_streams_warn)
1940         return;
1941     av_log(file->ctx, AV_LOG_WARNING,
1942            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
1943            av_get_media_type_string(st->codec->codec_type),
1944            input_index, pkt->stream_index,
1945            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
1946     file->nb_streams_warn = pkt->stream_index + 1;
1947 }
1948
1949 static int transcode_init(void)
1950 {
1951     int ret = 0, i, j, k;
1952     AVFormatContext *oc;
1953     AVCodecContext *codec;
1954     OutputStream *ost;
1955     InputStream *ist;
1956     char error[1024];
1957     int want_sdp = 1;
1958
1959     /* init framerate emulation */
1960     for (i = 0; i < nb_input_files; i++) {
1961         InputFile *ifile = input_files[i];
1962         if (ifile->rate_emu)
1963             for (j = 0; j < ifile->nb_streams; j++)
1964                 input_streams[j + ifile->ist_index]->start = av_gettime();
1965     }
1966
1967     /* output stream init */
1968     for (i = 0; i < nb_output_files; i++) {
1969         oc = output_files[i]->ctx;
1970         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
1971             av_dump_format(oc, i, oc->filename, 1);
1972             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
1973             return AVERROR(EINVAL);
1974         }
1975     }
1976
1977     /* init complex filtergraphs */
1978     for (i = 0; i < nb_filtergraphs; i++)
1979         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
1980             return ret;
1981
1982     /* for each output stream, we compute the right encoding parameters */
1983     for (i = 0; i < nb_output_streams; i++) {
1984         AVCodecContext *icodec = NULL;
1985         ost = output_streams[i];
1986         oc  = output_files[ost->file_index]->ctx;
1987         ist = get_input_stream(ost);
1988
1989         if (ost->attachment_filename)
1990             continue;
1991
1992         codec  = ost->st->codec;
1993
1994         if (ist) {
1995             icodec = ist->st->codec;
1996
1997             ost->st->disposition          = ist->st->disposition;
1998             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
1999             codec->chroma_sample_location = icodec->chroma_sample_location;
2000         }
2001
2002         if (ost->stream_copy) {
2003             uint64_t extra_size;
2004
2005             av_assert0(ist && !ost->filter);
2006
2007             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2008
2009             if (extra_size > INT_MAX) {
2010                 return AVERROR(EINVAL);
2011             }
2012
2013             /* if stream_copy is selected, no need to decode or encode */
2014             codec->codec_id   = icodec->codec_id;
2015             codec->codec_type = icodec->codec_type;
2016
2017             if (!codec->codec_tag) {
2018                 if (!oc->oformat->codec_tag ||
2019                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2020                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2021                     codec->codec_tag = icodec->codec_tag;
2022             }
2023
2024             codec->bit_rate       = icodec->bit_rate;
2025             codec->rc_max_rate    = icodec->rc_max_rate;
2026             codec->rc_buffer_size = icodec->rc_buffer_size;
2027             codec->field_order    = icodec->field_order;
2028             codec->extradata      = av_mallocz(extra_size);
2029             if (!codec->extradata) {
2030                 return AVERROR(ENOMEM);
2031             }
2032             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2033             codec->extradata_size= icodec->extradata_size;
2034             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2035
2036             codec->time_base = ist->st->time_base;
2037             /*
2038              * Avi is a special case here because it supports variable fps but
2039              * having the fps and timebase differe significantly adds quite some
2040              * overhead
2041              */
2042             if(!strcmp(oc->oformat->name, "avi")) {
2043                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2044                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2045                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2046                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2047                      || copy_tb==2){
2048                     codec->time_base.num = ist->st->r_frame_rate.den;
2049                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2050                     codec->ticks_per_frame = 2;
2051                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2052                                  && av_q2d(ist->st->time_base) < 1.0/500
2053                     || copy_tb==0){
2054                     codec->time_base = icodec->time_base;
2055                     codec->time_base.num *= icodec->ticks_per_frame;
2056                     codec->time_base.den *= 2;
2057                     codec->ticks_per_frame = 2;
2058                 }
2059             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2060                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2061                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2062                       && strcmp(oc->oformat->name, "f4v")
2063             ) {
2064                 if(   copy_tb<0 && icodec->time_base.den
2065                                 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2066                                 && av_q2d(ist->st->time_base) < 1.0/500
2067                    || copy_tb==0){
2068                     codec->time_base = icodec->time_base;
2069                     codec->time_base.num *= icodec->ticks_per_frame;
2070                 }
2071             }
2072
2073             if(ost->frame_rate.num)
2074                 codec->time_base = av_inv_q(ost->frame_rate);
2075
2076             av_reduce(&codec->time_base.num, &codec->time_base.den,
2077                         codec->time_base.num, codec->time_base.den, INT_MAX);
2078
2079             switch (codec->codec_type) {
2080             case AVMEDIA_TYPE_AUDIO:
2081                 if (audio_volume != 256) {
2082                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2083                     exit(1);
2084                 }
2085                 codec->channel_layout     = icodec->channel_layout;
2086                 codec->sample_rate        = icodec->sample_rate;
2087                 codec->channels           = icodec->channels;
2088                 codec->frame_size         = icodec->frame_size;
2089                 codec->audio_service_type = icodec->audio_service_type;
2090                 codec->block_align        = icodec->block_align;
2091                 if((codec->block_align == 1 || codec->block_align == 1152) && codec->codec_id == AV_CODEC_ID_MP3)
2092                     codec->block_align= 0;
2093                 if(codec->codec_id == AV_CODEC_ID_AC3)
2094                     codec->block_align= 0;
2095                 break;
2096             case AVMEDIA_TYPE_VIDEO:
2097                 codec->pix_fmt            = icodec->pix_fmt;
2098                 codec->width              = icodec->width;
2099                 codec->height             = icodec->height;
2100                 codec->has_b_frames       = icodec->has_b_frames;
2101                 if (!codec->sample_aspect_ratio.num) {
2102                     codec->sample_aspect_ratio   =
2103                     ost->st->sample_aspect_ratio =
2104                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2105                         ist->st->codec->sample_aspect_ratio.num ?
2106                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2107                 }
2108                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2109                 break;
2110             case AVMEDIA_TYPE_SUBTITLE:
2111                 codec->width  = icodec->width;
2112                 codec->height = icodec->height;
2113                 break;
2114             case AVMEDIA_TYPE_DATA:
2115             case AVMEDIA_TYPE_ATTACHMENT:
2116                 break;
2117             default:
2118                 abort();
2119             }
2120         } else {
2121             if (!ost->enc)
2122                 ost->enc = avcodec_find_encoder(codec->codec_id);
2123             if (!ost->enc) {
2124                 /* should only happen when a default codec is not present. */
2125                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2126                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2127                 ret = AVERROR(EINVAL);
2128                 goto dump_format;
2129             }
2130
2131             if (ist)
2132                 ist->decoding_needed++;
2133             ost->encoding_needed = 1;
2134
2135             if (!ost->filter &&
2136                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2137                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2138                     FilterGraph *fg;
2139                     fg = init_simple_filtergraph(ist, ost);
2140                     if (configure_filtergraph(fg)) {
2141                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2142                         exit(1);
2143                     }
2144             }
2145
2146             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2147                 if (ost->filter && !ost->frame_rate.num)
2148                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2149                 if (ist && !ost->frame_rate.num)
2150                     ost->frame_rate = ist->framerate;
2151                 if (ist && !ost->frame_rate.num)
2152                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2153 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2154                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2155                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2156                     ost->frame_rate = ost->enc->supported_framerates[idx];
2157                 }
2158             }
2159
2160             switch (codec->codec_type) {
2161             case AVMEDIA_TYPE_AUDIO:
2162                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2163                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2164                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2165                 codec->channels       = av_get_channel_layout_nb_channels(codec->channel_layout);
2166                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2167                 break;
2168             case AVMEDIA_TYPE_VIDEO:
2169                 codec->time_base = av_inv_q(ost->frame_rate);
2170                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2171                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2172                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2173                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2174                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2175                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2176                 }
2177                 for (j = 0; j < ost->forced_kf_count; j++)
2178                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2179                                                          AV_TIME_BASE_Q,
2180                                                          codec->time_base);
2181
2182                 codec->width  = ost->filter->filter->inputs[0]->w;
2183                 codec->height = ost->filter->filter->inputs[0]->h;
2184                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2185                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
2186                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
2187                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2188                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2189
2190                 if (!icodec ||
2191                     codec->width   != icodec->width  ||
2192                     codec->height  != icodec->height ||
2193                     codec->pix_fmt != icodec->pix_fmt) {
2194                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2195                 }
2196
2197                 if (ost->forced_keyframes)
2198                     parse_forced_key_frames(ost->forced_keyframes, ost,
2199                                             ost->st->codec);
2200                 break;
2201             case AVMEDIA_TYPE_SUBTITLE:
2202                 codec->time_base = (AVRational){1, 1000};
2203                 if (!codec->width) {
2204                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2205                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2206                 }
2207                 break;
2208             default:
2209                 abort();
2210                 break;
2211             }
2212             /* two pass mode */
2213             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2214                 char logfilename[1024];
2215                 FILE *f;
2216
2217                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2218                          ost->logfile_prefix ? ost->logfile_prefix :
2219                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2220                          i);
2221                 if (!strcmp(ost->enc->name, "libx264")) {
2222                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2223                 } else {
2224                     if (codec->flags & CODEC_FLAG_PASS2) {
2225                         char  *logbuffer;
2226                         size_t logbuffer_size;
2227                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2228                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2229                                    logfilename);
2230                             exit(1);
2231                         }
2232                         codec->stats_in = logbuffer;
2233                     }
2234                     if (codec->flags & CODEC_FLAG_PASS1) {
2235                         f = fopen(logfilename, "wb");
2236                         if (!f) {
2237                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2238                                 logfilename, strerror(errno));
2239                             exit(1);
2240                         }
2241                         ost->logfile = f;
2242                     }
2243                 }
2244             }
2245         }
2246     }
2247
2248     /* open each encoder */
2249     for (i = 0; i < nb_output_streams; i++) {
2250         ost = output_streams[i];
2251         if (ost->encoding_needed) {
2252             AVCodec      *codec = ost->enc;
2253             AVCodecContext *dec = NULL;
2254
2255             if ((ist = get_input_stream(ost)))
2256                 dec = ist->st->codec;
2257             if (dec && dec->subtitle_header) {
2258                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2259                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2260                 if (!ost->st->codec->subtitle_header) {
2261                     ret = AVERROR(ENOMEM);
2262                     goto dump_format;
2263                 }
2264                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2265                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2266             }
2267             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2268                 av_dict_set(&ost->opts, "threads", "auto", 0);
2269             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2270                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2271                         ost->file_index, ost->index);
2272                 ret = AVERROR(EINVAL);
2273                 goto dump_format;
2274             }
2275             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2276                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2277                 av_buffersink_set_frame_size(ost->filter->filter,
2278                                              ost->st->codec->frame_size);
2279             assert_codec_experimental(ost->st->codec, 1);
2280             assert_avoptions(ost->opts);
2281             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2282                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2283                                              " It takes bits/s as argument, not kbits/s\n");
2284             extra_size += ost->st->codec->extradata_size;
2285
2286             if (ost->st->codec->me_threshold)
2287                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
2288         }
2289     }
2290
2291     /* init input streams */
2292     for (i = 0; i < nb_input_streams; i++)
2293         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
2294             goto dump_format;
2295
2296     /* discard unused programs */
2297     for (i = 0; i < nb_input_files; i++) {
2298         InputFile *ifile = input_files[i];
2299         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2300             AVProgram *p = ifile->ctx->programs[j];
2301             int discard  = AVDISCARD_ALL;
2302
2303             for (k = 0; k < p->nb_stream_indexes; k++)
2304                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2305                     discard = AVDISCARD_DEFAULT;
2306                     break;
2307                 }
2308             p->discard = discard;
2309         }
2310     }
2311
2312     /* open files and write file headers */
2313     for (i = 0; i < nb_output_files; i++) {
2314         oc = output_files[i]->ctx;
2315         oc->interrupt_callback = int_cb;
2316         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2317             char errbuf[128];
2318             const char *errbuf_ptr = errbuf;
2319             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
2320                 errbuf_ptr = strerror(AVUNERROR(ret));
2321             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
2322             ret = AVERROR(EINVAL);
2323             goto dump_format;
2324         }
2325 //         assert_avoptions(output_files[i]->opts);
2326         if (strcmp(oc->oformat->name, "rtp")) {
2327             want_sdp = 0;
2328         }
2329     }
2330
2331  dump_format:
2332     /* dump the file output parameters - cannot be done before in case
2333        of stream copy */
2334     for (i = 0; i < nb_output_files; i++) {
2335         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2336     }
2337
2338     /* dump the stream mapping */
2339     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2340     for (i = 0; i < nb_input_streams; i++) {
2341         ist = input_streams[i];
2342
2343         for (j = 0; j < ist->nb_filters; j++) {
2344             if (ist->filters[j]->graph->graph_desc) {
2345                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2346                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2347                        ist->filters[j]->name);
2348                 if (nb_filtergraphs > 1)
2349                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2350                 av_log(NULL, AV_LOG_INFO, "\n");
2351             }
2352         }
2353     }
2354
2355     for (i = 0; i < nb_output_streams; i++) {
2356         ost = output_streams[i];
2357
2358         if (ost->attachment_filename) {
2359             /* an attached file */
2360             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2361                    ost->attachment_filename, ost->file_index, ost->index);
2362             continue;
2363         }
2364
2365         if (ost->filter && ost->filter->graph->graph_desc) {
2366             /* output from a complex graph */
2367             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2368             if (nb_filtergraphs > 1)
2369                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2370
2371             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2372                    ost->index, ost->enc ? ost->enc->name : "?");
2373             continue;
2374         }
2375
2376         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2377                input_streams[ost->source_index]->file_index,
2378                input_streams[ost->source_index]->st->index,
2379                ost->file_index,
2380                ost->index);
2381         if (ost->sync_ist != input_streams[ost->source_index])
2382             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2383                    ost->sync_ist->file_index,
2384                    ost->sync_ist->st->index);
2385         if (ost->stream_copy)
2386             av_log(NULL, AV_LOG_INFO, " (copy)");
2387         else
2388             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2389                    input_streams[ost->source_index]->dec->name : "?",
2390                    ost->enc ? ost->enc->name : "?");
2391         av_log(NULL, AV_LOG_INFO, "\n");
2392     }
2393
2394     if (ret) {
2395         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2396         return ret;
2397     }
2398
2399     if (want_sdp) {
2400         print_sdp();
2401     }
2402
2403     return 0;
2404 }
2405
2406 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2407 static int need_output(void)
2408 {
2409     int i;
2410
2411     for (i = 0; i < nb_output_streams; i++) {
2412         OutputStream *ost    = output_streams[i];
2413         OutputFile *of       = output_files[ost->file_index];
2414         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2415
2416         if (ost->finished ||
2417             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2418             continue;
2419         if (ost->frame_number >= ost->max_frames) {
2420             int j;
2421             for (j = 0; j < of->ctx->nb_streams; j++)
2422                 close_output_stream(output_streams[of->ost_index + j]);
2423             continue;
2424         }
2425
2426         return 1;
2427     }
2428
2429     return 0;
2430 }
2431
2432 /**
2433  * Select the output stream to process.
2434  *
2435  * @return  selected output stream, or NULL if none available
2436  */
2437 static OutputStream *choose_output(void)
2438 {
2439     int i;
2440     int64_t opts_min = INT64_MAX;
2441     OutputStream *ost_min = NULL;
2442
2443     for (i = 0; i < nb_output_streams; i++) {
2444         OutputStream *ost = output_streams[i];
2445         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2446                                     AV_TIME_BASE_Q);
2447         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2448             opts_min = opts;
2449             ost_min  = ost;
2450         }
2451     }
2452     return ost_min;
2453 }
2454
2455 static int check_keyboard_interaction(int64_t cur_time)
2456 {
2457     int i, ret, key;
2458     static int64_t last_time;
2459     if (received_nb_signals)
2460         return AVERROR_EXIT;
2461     /* read_key() returns 0 on EOF */
2462     if(cur_time - last_time >= 100000 && !run_as_daemon){
2463         key =  read_key();
2464         last_time = cur_time;
2465     }else
2466         key = -1;
2467     if (key == 'q')
2468         return AVERROR_EXIT;
2469     if (key == '+') av_log_set_level(av_log_get_level()+10);
2470     if (key == '-') av_log_set_level(av_log_get_level()-10);
2471     if (key == 's') qp_hist     ^= 1;
2472     if (key == 'h'){
2473         if (do_hex_dump){
2474             do_hex_dump = do_pkt_dump = 0;
2475         } else if(do_pkt_dump){
2476             do_hex_dump = 1;
2477         } else
2478             do_pkt_dump = 1;
2479         av_log_set_level(AV_LOG_DEBUG);
2480     }
2481     if (key == 'c' || key == 'C'){
2482         char buf[4096], target[64], command[256], arg[256] = {0};
2483         double time;
2484         int k, n = 0;
2485         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2486         i = 0;
2487         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2488             if (k > 0)
2489                 buf[i++] = k;
2490         buf[i] = 0;
2491         if (k > 0 &&
2492             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2493             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2494                    target, time, command, arg);
2495             for (i = 0; i < nb_filtergraphs; i++) {
2496                 FilterGraph *fg = filtergraphs[i];
2497                 if (fg->graph) {
2498                     if (time < 0) {
2499                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2500                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2501                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2502                     } else {
2503                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2504                     }
2505                 }
2506             }
2507         } else {
2508             av_log(NULL, AV_LOG_ERROR,
2509                    "Parse error, at least 3 arguments were expected, "
2510                    "only %d given in string '%s'\n", n, buf);
2511         }
2512     }
2513     if (key == 'd' || key == 'D'){
2514         int debug=0;
2515         if(key == 'D') {
2516             debug = input_streams[0]->st->codec->debug<<1;
2517             if(!debug) debug = 1;
2518             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2519                 debug += debug;
2520         }else
2521             if(scanf("%d", &debug)!=1)
2522                 fprintf(stderr,"error parsing debug value\n");
2523         for(i=0;i<nb_input_streams;i++) {
2524             input_streams[i]->st->codec->debug = debug;
2525         }
2526         for(i=0;i<nb_output_streams;i++) {
2527             OutputStream *ost = output_streams[i];
2528             ost->st->codec->debug = debug;
2529         }
2530         if(debug) av_log_set_level(AV_LOG_DEBUG);
2531         fprintf(stderr,"debug=%d\n", debug);
2532     }
2533     if (key == '?'){
2534         fprintf(stderr, "key    function\n"
2535                         "?      show this help\n"
2536                         "+      increase verbosity\n"
2537                         "-      decrease verbosity\n"
2538                         "c      Send command to filtergraph\n"
2539                         "D      cycle through available debug modes\n"
2540                         "h      dump packets/hex press to cycle through the 3 states\n"
2541                         "q      quit\n"
2542                         "s      Show QP histogram\n"
2543         );
2544     }
2545     return 0;
2546 }
2547
2548 #if HAVE_PTHREADS
2549 static void *input_thread(void *arg)
2550 {
2551     InputFile *f = arg;
2552     int ret = 0;
2553
2554     while (!transcoding_finished && ret >= 0) {
2555         AVPacket pkt;
2556         ret = av_read_frame(f->ctx, &pkt);
2557
2558         if (ret == AVERROR(EAGAIN)) {
2559             av_usleep(10000);
2560             ret = 0;
2561             continue;
2562         } else if (ret < 0)
2563             break;
2564
2565         pthread_mutex_lock(&f->fifo_lock);
2566         while (!av_fifo_space(f->fifo))
2567             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2568
2569         av_dup_packet(&pkt);
2570         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2571
2572         pthread_mutex_unlock(&f->fifo_lock);
2573     }
2574
2575     f->finished = 1;
2576     return NULL;
2577 }
2578
2579 static void free_input_threads(void)
2580 {
2581     int i;
2582
2583     if (nb_input_files == 1)
2584         return;
2585
2586     transcoding_finished = 1;
2587
2588     for (i = 0; i < nb_input_files; i++) {
2589         InputFile *f = input_files[i];
2590         AVPacket pkt;
2591
2592         if (!f->fifo || f->joined)
2593             continue;
2594
2595         pthread_mutex_lock(&f->fifo_lock);
2596         while (av_fifo_size(f->fifo)) {
2597             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2598             av_free_packet(&pkt);
2599         }
2600         pthread_cond_signal(&f->fifo_cond);
2601         pthread_mutex_unlock(&f->fifo_lock);
2602
2603         pthread_join(f->thread, NULL);
2604         f->joined = 1;
2605
2606         while (av_fifo_size(f->fifo)) {
2607             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2608             av_free_packet(&pkt);
2609         }
2610         av_fifo_free(f->fifo);
2611     }
2612 }
2613
2614 static int init_input_threads(void)
2615 {
2616     int i, ret;
2617
2618     if (nb_input_files == 1)
2619         return 0;
2620
2621     for (i = 0; i < nb_input_files; i++) {
2622         InputFile *f = input_files[i];
2623
2624         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2625             return AVERROR(ENOMEM);
2626
2627         pthread_mutex_init(&f->fifo_lock, NULL);
2628         pthread_cond_init (&f->fifo_cond, NULL);
2629
2630         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2631             return AVERROR(ret);
2632     }
2633     return 0;
2634 }
2635
2636 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2637 {
2638     int ret = 0;
2639
2640     pthread_mutex_lock(&f->fifo_lock);
2641
2642     if (av_fifo_size(f->fifo)) {
2643         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2644         pthread_cond_signal(&f->fifo_cond);
2645     } else {
2646         if (f->finished)
2647             ret = AVERROR_EOF;
2648         else
2649             ret = AVERROR(EAGAIN);
2650     }
2651
2652     pthread_mutex_unlock(&f->fifo_lock);
2653
2654     return ret;
2655 }
2656 #endif
2657
2658 static int get_input_packet(InputFile *f, AVPacket *pkt)
2659 {
2660 #if HAVE_PTHREADS
2661     if (nb_input_files > 1)
2662         return get_input_packet_mt(f, pkt);
2663 #endif
2664     return av_read_frame(f->ctx, pkt);
2665 }
2666
2667 static int got_eagain(void)
2668 {
2669     int i;
2670     for (i = 0; i < nb_output_streams; i++)
2671         if (output_streams[i]->unavailable)
2672             return 1;
2673     return 0;
2674 }
2675
2676 static void reset_eagain(void)
2677 {
2678     int i;
2679     for (i = 0; i < nb_input_files; i++)
2680         input_files[i]->eagain = 0;
2681     for (i = 0; i < nb_output_streams; i++)
2682         output_streams[i]->unavailable = 0;
2683 }
2684
2685 /*
2686  * Return
2687  * - 0 -- one packet was read and processed
2688  * - AVERROR(EAGAIN) -- no packets were available for selected file,
2689  *   this function should be called again
2690  * - AVERROR_EOF -- this function should not be called again
2691  */
2692 static int process_input(int file_index)
2693 {
2694     InputFile *ifile = input_files[file_index];
2695     AVFormatContext *is;
2696     InputStream *ist;
2697     AVPacket pkt;
2698     int ret, i, j;
2699
2700     is  = ifile->ctx;
2701     ret = get_input_packet(ifile, &pkt);
2702
2703     if (ret == AVERROR(EAGAIN)) {
2704         ifile->eagain = 1;
2705         return ret;
2706     }
2707     if (ret < 0) {
2708         if (ret != AVERROR_EOF) {
2709             print_error(is->filename, ret);
2710             if (exit_on_error)
2711                 exit(1);
2712         }
2713         ifile->eof_reached = 1;
2714
2715         for (i = 0; i < ifile->nb_streams; i++) {
2716             ist = input_streams[ifile->ist_index + i];
2717             if (ist->decoding_needed)
2718                 output_packet(ist, NULL);
2719
2720             /* mark all outputs that don't go through lavfi as finished */
2721             for (j = 0; j < nb_output_streams; j++) {
2722                 OutputStream *ost = output_streams[j];
2723
2724                 if (ost->source_index == ifile->ist_index + i &&
2725                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2726                     close_output_stream(ost);
2727             }
2728         }
2729
2730         return AVERROR(EAGAIN);
2731     }
2732
2733     reset_eagain();
2734
2735     if (do_pkt_dump) {
2736         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2737                          is->streams[pkt.stream_index]);
2738     }
2739     /* the following test is needed in case new streams appear
2740        dynamically in stream : we ignore them */
2741     if (pkt.stream_index >= ifile->nb_streams) {
2742         report_new_stream(file_index, &pkt);
2743         goto discard_packet;
2744     }
2745
2746     ist = input_streams[ifile->ist_index + pkt.stream_index];
2747     if (ist->discard)
2748         goto discard_packet;
2749
2750     if(!ist->wrap_correction_done && input_files[file_index]->ctx->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
2751         int64_t stime = av_rescale_q(input_files[file_index]->ctx->start_time, AV_TIME_BASE_Q, ist->st->time_base);
2752         int64_t stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
2753         ist->wrap_correction_done = 1;
2754
2755         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2756             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
2757             ist->wrap_correction_done = 0;
2758         }
2759         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2760             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
2761             ist->wrap_correction_done = 0;
2762         }
2763     }
2764
2765     if (pkt.dts != AV_NOPTS_VALUE)
2766         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2767     if (pkt.pts != AV_NOPTS_VALUE)
2768         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2769
2770     if (pkt.pts != AV_NOPTS_VALUE)
2771         pkt.pts *= ist->ts_scale;
2772     if (pkt.dts != AV_NOPTS_VALUE)
2773         pkt.dts *= ist->ts_scale;
2774
2775     if (debug_ts) {
2776         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
2777                 "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",
2778                 ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2779                 av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
2780                 av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
2781                 av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2782                 av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2783                 input_files[ist->file_index]->ts_offset);
2784     }
2785
2786     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2787         !copy_ts) {
2788         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2789         int64_t delta   = pkt_dts - ist->next_dts;
2790         if (is->iformat->flags & AVFMT_TS_DISCONT) {
2791         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2792             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2793                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2794             pkt_dts+1<ist->pts){
2795             ifile->ts_offset -= delta;
2796             av_log(NULL, AV_LOG_DEBUG,
2797                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2798                    delta, ifile->ts_offset);
2799             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2800             if (pkt.pts != AV_NOPTS_VALUE)
2801                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2802         }
2803         } else {
2804             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2805                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2806                ) {
2807                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
2808                 pkt.dts = AV_NOPTS_VALUE;
2809             }
2810             if (pkt.pts != AV_NOPTS_VALUE){
2811                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
2812                 delta   = pkt_pts - ist->next_dts;
2813                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2814                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2815                    ) {
2816                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
2817                     pkt.pts = AV_NOPTS_VALUE;
2818                 }
2819             }
2820         }
2821     }
2822
2823     sub2video_heartbeat(ist, pkt.pts);
2824
2825     ret = output_packet(ist, &pkt);
2826     if (ret < 0) {
2827         char buf[128];
2828         av_strerror(ret, buf, sizeof(buf));
2829         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
2830                 ist->file_index, ist->st->index, buf);
2831         if (exit_on_error)
2832             exit(1);
2833     }
2834
2835 discard_packet:
2836     av_free_packet(&pkt);
2837
2838     return 0;
2839 }
2840
2841 /**
2842  * Perform a step of transcoding for the specified filter graph.
2843  *
2844  * @param[in]  graph     filter graph to consider
2845  * @param[out] best_ist  input stream where a frame would allow to continue
2846  * @return  0 for success, <0 for error
2847  */
2848 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
2849 {
2850     int i, ret;
2851     int nb_requests, nb_requests_max = 0;
2852     InputFilter *ifilter;
2853     InputStream *ist;
2854
2855     *best_ist = NULL;
2856     ret = avfilter_graph_request_oldest(graph->graph);
2857     if (ret >= 0)
2858         return reap_filters();
2859
2860     if (ret == AVERROR_EOF) {
2861         ret = reap_filters();
2862         for (i = 0; i < graph->nb_outputs; i++)
2863             close_output_stream(graph->outputs[i]->ost);
2864         return ret;
2865     }
2866     if (ret != AVERROR(EAGAIN))
2867         return ret;
2868
2869     for (i = 0; i < graph->nb_inputs; i++) {
2870         ifilter = graph->inputs[i];
2871         ist = ifilter->ist;
2872         if (input_files[ist->file_index]->eagain ||
2873             input_files[ist->file_index]->eof_reached)
2874             continue;
2875         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
2876         if (nb_requests > nb_requests_max) {
2877             nb_requests_max = nb_requests;
2878             *best_ist = ist;
2879         }
2880     }
2881
2882     if (!*best_ist)
2883         for (i = 0; i < graph->nb_outputs; i++)
2884             graph->outputs[i]->ost->unavailable = 1;
2885
2886     return 0;
2887 }
2888
2889 /**
2890  * Run a single step of transcoding.
2891  *
2892  * @return  0 for success, <0 for error
2893  */
2894 static int transcode_step(void)
2895 {
2896     OutputStream *ost;
2897     InputStream  *ist;
2898     int ret;
2899
2900     ost = choose_output();
2901     if (!ost) {
2902         if (got_eagain()) {
2903             reset_eagain();
2904             av_usleep(10000);
2905             return 0;
2906         }
2907         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
2908         return AVERROR_EOF;
2909     }
2910
2911     if (ost->filter) {
2912         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
2913             return ret;
2914         if (!ist)
2915             return 0;
2916     } else {
2917         av_assert0(ost->source_index >= 0);
2918         ist = input_streams[ost->source_index];
2919     }
2920
2921     ret = process_input(ist->file_index);
2922     if (ret == AVERROR(EAGAIN)) {
2923         if (input_files[ist->file_index]->eagain)
2924             ost->unavailable = 1;
2925         return 0;
2926     }
2927     if (ret < 0)
2928         return ret == AVERROR_EOF ? 0 : ret;
2929
2930     return reap_filters();
2931 }
2932
2933 /*
2934  * The following code is the main loop of the file converter
2935  */
2936 static int transcode(void)
2937 {
2938     int ret, i;
2939     AVFormatContext *os;
2940     OutputStream *ost;
2941     InputStream *ist;
2942     int64_t timer_start;
2943
2944     ret = transcode_init();
2945     if (ret < 0)
2946         goto fail;
2947
2948     if (stdin_interaction) {
2949         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
2950     }
2951
2952     timer_start = av_gettime();
2953
2954 #if HAVE_PTHREADS
2955     if ((ret = init_input_threads()) < 0)
2956         goto fail;
2957 #endif
2958
2959     while (!received_sigterm) {
2960         int64_t cur_time= av_gettime();
2961
2962         /* if 'q' pressed, exits */
2963         if (stdin_interaction)
2964             if (check_keyboard_interaction(cur_time) < 0)
2965                 break;
2966
2967         /* check if there's any stream where output is still needed */
2968         if (!need_output()) {
2969             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
2970             break;
2971         }
2972
2973         ret = transcode_step();
2974         if (ret < 0) {
2975             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
2976                 continue;
2977
2978             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
2979             break;
2980         }
2981
2982         /* dump report by using the output first video and audio streams */
2983         print_report(0, timer_start, cur_time);
2984     }
2985 #if HAVE_PTHREADS
2986     free_input_threads();
2987 #endif
2988
2989     /* at the end of stream, we must flush the decoder buffers */
2990     for (i = 0; i < nb_input_streams; i++) {
2991         ist = input_streams[i];
2992         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
2993             output_packet(ist, NULL);
2994         }
2995     }
2996     flush_encoders();
2997
2998     term_exit();
2999
3000     /* write the trailer if needed and close file */
3001     for (i = 0; i < nb_output_files; i++) {
3002         os = output_files[i]->ctx;
3003         av_write_trailer(os);
3004     }
3005
3006     /* dump report by using the first video and audio streams */
3007     print_report(1, timer_start, av_gettime());
3008
3009     /* close each encoder */
3010     for (i = 0; i < nb_output_streams; i++) {
3011         ost = output_streams[i];
3012         if (ost->encoding_needed) {
3013             av_freep(&ost->st->codec->stats_in);
3014             avcodec_close(ost->st->codec);
3015         }
3016     }
3017
3018     /* close each decoder */
3019     for (i = 0; i < nb_input_streams; i++) {
3020         ist = input_streams[i];
3021         if (ist->decoding_needed) {
3022             avcodec_close(ist->st->codec);
3023         }
3024     }
3025
3026     /* finished ! */
3027     ret = 0;
3028
3029  fail:
3030 #if HAVE_PTHREADS
3031     free_input_threads();
3032 #endif
3033
3034     if (output_streams) {
3035         for (i = 0; i < nb_output_streams; i++) {
3036             ost = output_streams[i];
3037             if (ost) {
3038                 if (ost->stream_copy)
3039                     av_freep(&ost->st->codec->extradata);
3040                 if (ost->logfile) {
3041                     fclose(ost->logfile);
3042                     ost->logfile = NULL;
3043                 }
3044                 av_freep(&ost->st->codec->subtitle_header);
3045                 av_free(ost->forced_kf_pts);
3046                 av_dict_free(&ost->opts);
3047             }
3048         }
3049     }
3050     return ret;
3051 }
3052
3053
3054 static int64_t getutime(void)
3055 {
3056 #if HAVE_GETRUSAGE
3057     struct rusage rusage;
3058
3059     getrusage(RUSAGE_SELF, &rusage);
3060     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3061 #elif HAVE_GETPROCESSTIMES
3062     HANDLE proc;
3063     FILETIME c, e, k, u;
3064     proc = GetCurrentProcess();
3065     GetProcessTimes(proc, &c, &e, &k, &u);
3066     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3067 #else
3068     return av_gettime();
3069 #endif
3070 }
3071
3072 static int64_t getmaxrss(void)
3073 {
3074 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3075     struct rusage rusage;
3076     getrusage(RUSAGE_SELF, &rusage);
3077     return (int64_t)rusage.ru_maxrss * 1024;
3078 #elif HAVE_GETPROCESSMEMORYINFO
3079     HANDLE proc;
3080     PROCESS_MEMORY_COUNTERS memcounters;
3081     proc = GetCurrentProcess();
3082     memcounters.cb = sizeof(memcounters);
3083     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3084     return memcounters.PeakPagefileUsage;
3085 #else
3086     return 0;
3087 #endif
3088 }
3089
3090 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3091 {
3092 }
3093
3094 static void parse_cpuflags(int argc, char **argv, const OptionDef *options)
3095 {
3096     int idx = locate_option(argc, argv, options, "cpuflags");
3097     if (idx && argv[idx + 1])
3098         opt_cpuflags(NULL, "cpuflags", argv[idx + 1]);
3099 }
3100
3101 int main(int argc, char **argv)
3102 {
3103     OptionsContext o = { 0 };
3104     int64_t ti;
3105
3106     atexit(exit_program);
3107
3108     reset_options(&o, 0);
3109
3110     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3111
3112     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3113     parse_loglevel(argc, argv, options);
3114
3115     if(argc>1 && !strcmp(argv[1], "-d")){
3116         run_as_daemon=1;
3117         av_log_set_callback(log_callback_null);
3118         argc--;
3119         argv++;
3120     }
3121
3122     avcodec_register_all();
3123 #if CONFIG_AVDEVICE
3124     avdevice_register_all();
3125 #endif
3126     avfilter_register_all();
3127     av_register_all();
3128     avformat_network_init();
3129
3130     show_banner(argc, argv, options);
3131
3132     term_init();
3133
3134     parse_cpuflags(argc, argv, options);
3135
3136     /* parse options */
3137     parse_options(&o, argc, argv, options, opt_output_file);
3138
3139     if (nb_output_files <= 0 && nb_input_files == 0) {
3140         show_usage();
3141         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3142         exit(1);
3143     }
3144
3145     /* file converter / grab */
3146     if (nb_output_files <= 0) {
3147         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3148         exit(1);
3149     }
3150
3151 //     if (nb_input_files == 0) {
3152 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3153 //         exit(1);
3154 //     }
3155
3156     current_time = ti = getutime();
3157     if (transcode() < 0)
3158         exit(1);
3159     ti = getutime() - ti;
3160     if (do_benchmark) {
3161         int maxrss = getmaxrss() / 1024;
3162         printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss);
3163     }
3164
3165     exit(0);
3166     return 0;
3167 }