c32321daadd5046f840b6601a2cbad5a200b8234
[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/channel_layout.h"
47 #include "libavutil/parseutils.h"
48 #include "libavutil/samplefmt.h"
49 #include "libavutil/colorspace.h"
50 #include "libavutil/fifo.h"
51 #include "libavutil/intreadwrite.h"
52 #include "libavutil/dict.h"
53 #include "libavutil/mathematics.h"
54 #include "libavutil/pixdesc.h"
55 #include "libavutil/avstring.h"
56 #include "libavutil/libm.h"
57 #include "libavutil/imgutils.h"
58 #include "libavutil/timestamp.h"
59 #include "libavutil/bprint.h"
60 #include "libavutil/time.h"
61 #include "libavformat/os_support.h"
62
63 #include "libavformat/ffm.h" // not public API
64
65 # include "libavfilter/avcodec.h"
66 # include "libavfilter/avfilter.h"
67 # include "libavfilter/avfiltergraph.h"
68 # include "libavfilter/buffersrc.h"
69 # include "libavfilter/buffersink.h"
70
71 #if HAVE_SYS_RESOURCE_H
72 #include <sys/time.h>
73 #include <sys/types.h>
74 #include <sys/resource.h>
75 #elif HAVE_GETPROCESSTIMES
76 #include <windows.h>
77 #endif
78 #if HAVE_GETPROCESSMEMORYINFO
79 #include <windows.h>
80 #include <psapi.h>
81 #endif
82
83 #if HAVE_SYS_SELECT_H
84 #include <sys/select.h>
85 #endif
86
87 #if HAVE_TERMIOS_H
88 #include <fcntl.h>
89 #include <sys/ioctl.h>
90 #include <sys/time.h>
91 #include <termios.h>
92 #elif HAVE_KBHIT
93 #include <conio.h>
94 #endif
95
96 #if HAVE_PTHREADS
97 #include <pthread.h>
98 #endif
99
100 #include <time.h>
101
102 #include "ffmpeg.h"
103 #include "cmdutils.h"
104
105 #include "libavutil/avassert.h"
106
107 const char program_name[] = "ffmpeg";
108 const int program_birth_year = 2000;
109
110 static FILE *vstats_file;
111
112 static void do_video_stats(OutputStream *ost, int frame_size);
113 static int64_t getutime(void);
114
115 static int run_as_daemon  = 0;
116 static int64_t video_size = 0;
117 static int64_t audio_size = 0;
118 static int64_t subtitle_size = 0;
119 static int64_t extra_size = 0;
120 static int nb_frames_dup = 0;
121 static int nb_frames_drop = 0;
122
123 static int current_time;
124 AVIOContext *progress_avio = NULL;
125
126 static uint8_t *subtitle_out;
127
128 #if HAVE_PTHREADS
129 /* signal to input threads that they should exit; set by the main thread */
130 static int transcoding_finished;
131 #endif
132
133 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
134
135 InputStream **input_streams = NULL;
136 int        nb_input_streams = 0;
137 InputFile   **input_files   = NULL;
138 int        nb_input_files   = 0;
139
140 OutputStream **output_streams = NULL;
141 int         nb_output_streams = 0;
142 OutputFile   **output_files   = NULL;
143 int         nb_output_files   = 0;
144
145 FilterGraph **filtergraphs;
146 int        nb_filtergraphs;
147
148 #if HAVE_TERMIOS_H
149
150 /* init terminal so that we can grab keys */
151 static struct termios oldtty;
152 static int restore_tty;
153 #endif
154
155
156 /* sub2video hack:
157    Convert subtitles to video with alpha to insert them in filter graphs.
158    This is a temporary solution until libavfilter gets real subtitles support.
159  */
160
161
162
163 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
164                                 AVSubtitleRect *r)
165 {
166     uint32_t *pal, *dst2;
167     uint8_t *src, *src2;
168     int x, y;
169
170     if (r->type != SUBTITLE_BITMAP) {
171         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
172         return;
173     }
174     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
175         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
176         return;
177     }
178
179     dst += r->y * dst_linesize + r->x * 4;
180     src = r->pict.data[0];
181     pal = (uint32_t *)r->pict.data[1];
182     for (y = 0; y < r->h; y++) {
183         dst2 = (uint32_t *)dst;
184         src2 = src;
185         for (x = 0; x < r->w; x++)
186             *(dst2++) = pal[*(src2++)];
187         dst += dst_linesize;
188         src += r->pict.linesize[0];
189     }
190 }
191
192 static void sub2video_push_ref(InputStream *ist, int64_t pts)
193 {
194     AVFilterBufferRef *ref = ist->sub2video.ref;
195     int i;
196
197     ist->sub2video.last_pts = ref->pts = pts;
198     for (i = 0; i < ist->nb_filters; i++)
199         av_buffersrc_add_ref(ist->filters[i]->filter,
200                              avfilter_ref_buffer(ref, ~0),
201                              AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
202                              AV_BUFFERSRC_FLAG_NO_COPY |
203                              AV_BUFFERSRC_FLAG_PUSH);
204 }
205
206 static void sub2video_update(InputStream *ist, AVSubtitle *sub)
207 {
208     int w = ist->sub2video.w, h = ist->sub2video.h;
209     AVFilterBufferRef *ref = ist->sub2video.ref;
210     int8_t *dst;
211     int     dst_linesize;
212     int i;
213     int64_t pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ist->st->time_base);
214
215     if (!ref)
216         return;
217     dst          = ref->data    [0];
218     dst_linesize = ref->linesize[0];
219     memset(dst, 0, h * dst_linesize);
220     for (i = 0; i < sub->num_rects; i++)
221         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
222     sub2video_push_ref(ist, pts);
223 }
224
225 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
226 {
227     InputFile *infile = input_files[ist->file_index];
228     int i, j, nb_reqs;
229     int64_t pts2;
230
231     /* When a frame is read from a file, examine all sub2video streams in
232        the same file and send the sub2video frame again. Otherwise, decoded
233        video frames could be accumulating in the filter graph while a filter
234        (possibly overlay) is desperately waiting for a subtitle frame. */
235     for (i = 0; i < infile->nb_streams; i++) {
236         InputStream *ist2 = input_streams[infile->ist_index + i];
237         if (!ist2->sub2video.ref)
238             continue;
239         /* subtitles seem to be usually muxed ahead of other streams;
240            if not, substracting a larger time here is necessary */
241         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
242         /* do not send the heartbeat frame if the subtitle is already ahead */
243         if (pts2 <= ist2->sub2video.last_pts)
244             continue;
245         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
246             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
247         if (nb_reqs)
248             sub2video_push_ref(ist2, pts2);
249     }
250 }
251
252 static void sub2video_flush(InputStream *ist)
253 {
254     int i;
255
256     for (i = 0; i < ist->nb_filters; i++)
257         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
258 }
259
260 /* end of sub2video hack */
261
262 void term_exit(void)
263 {
264     av_log(NULL, AV_LOG_QUIET, "%s", "");
265 #if HAVE_TERMIOS_H
266     if(restore_tty)
267         tcsetattr (0, TCSANOW, &oldtty);
268 #endif
269 }
270
271 static volatile int received_sigterm = 0;
272 static volatile int received_nb_signals = 0;
273
274 static void
275 sigterm_handler(int sig)
276 {
277     received_sigterm = sig;
278     received_nb_signals++;
279     term_exit();
280     if(received_nb_signals > 3)
281         exit(123);
282 }
283
284 void term_init(void)
285 {
286 #if HAVE_TERMIOS_H
287     if(!run_as_daemon){
288         struct termios tty;
289         int istty = 1;
290 #if HAVE_ISATTY
291         istty = isatty(0) && isatty(2);
292 #endif
293         if (istty && tcgetattr (0, &tty) == 0) {
294             oldtty = tty;
295             restore_tty = 1;
296             atexit(term_exit);
297
298             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
299                              |INLCR|IGNCR|ICRNL|IXON);
300             tty.c_oflag |= OPOST;
301             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
302             tty.c_cflag &= ~(CSIZE|PARENB);
303             tty.c_cflag |= CS8;
304             tty.c_cc[VMIN] = 1;
305             tty.c_cc[VTIME] = 0;
306
307             tcsetattr (0, TCSANOW, &tty);
308         }
309         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
310     }
311 #endif
312     avformat_network_deinit();
313
314     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
315     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
316 #ifdef SIGXCPU
317     signal(SIGXCPU, sigterm_handler);
318 #endif
319 }
320
321 /* read a key without blocking */
322 static int read_key(void)
323 {
324     unsigned char ch;
325 #if HAVE_TERMIOS_H
326     int n = 1;
327     struct timeval tv;
328     fd_set rfds;
329
330     FD_ZERO(&rfds);
331     FD_SET(0, &rfds);
332     tv.tv_sec = 0;
333     tv.tv_usec = 0;
334     n = select(1, &rfds, NULL, NULL, &tv);
335     if (n > 0) {
336         n = read(0, &ch, 1);
337         if (n == 1)
338             return ch;
339
340         return n;
341     }
342 #elif HAVE_KBHIT
343 #    if HAVE_PEEKNAMEDPIPE
344     static int is_pipe;
345     static HANDLE input_handle;
346     DWORD dw, nchars;
347     if(!input_handle){
348         input_handle = GetStdHandle(STD_INPUT_HANDLE);
349         is_pipe = !GetConsoleMode(input_handle, &dw);
350     }
351
352     if (stdin->_cnt > 0) {
353         read(0, &ch, 1);
354         return ch;
355     }
356     if (is_pipe) {
357         /* When running under a GUI, you will end here. */
358         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
359             return -1;
360         //Read it
361         if(nchars != 0) {
362             read(0, &ch, 1);
363             return ch;
364         }else{
365             return -1;
366         }
367     }
368 #    endif
369     if(kbhit())
370         return(getch());
371 #endif
372     return -1;
373 }
374
375 static int decode_interrupt_cb(void *ctx)
376 {
377     return received_nb_signals > 1;
378 }
379
380 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
381
382 static void exit_program(void)
383 {
384     int i, j;
385
386     for (i = 0; i < nb_filtergraphs; i++) {
387         avfilter_graph_free(&filtergraphs[i]->graph);
388         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
389             av_freep(&filtergraphs[i]->inputs[j]->name);
390             av_freep(&filtergraphs[i]->inputs[j]);
391         }
392         av_freep(&filtergraphs[i]->inputs);
393         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
394             av_freep(&filtergraphs[i]->outputs[j]->name);
395             av_freep(&filtergraphs[i]->outputs[j]);
396         }
397         av_freep(&filtergraphs[i]->outputs);
398         av_freep(&filtergraphs[i]);
399     }
400     av_freep(&filtergraphs);
401
402     av_freep(&subtitle_out);
403
404     /* close files */
405     for (i = 0; i < nb_output_files; i++) {
406         AVFormatContext *s = output_files[i]->ctx;
407         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
408             avio_close(s->pb);
409         avformat_free_context(s);
410         av_dict_free(&output_files[i]->opts);
411         av_freep(&output_files[i]);
412     }
413     for (i = 0; i < nb_output_streams; i++) {
414         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
415         while (bsfc) {
416             AVBitStreamFilterContext *next = bsfc->next;
417             av_bitstream_filter_close(bsfc);
418             bsfc = next;
419         }
420         output_streams[i]->bitstream_filters = NULL;
421         avcodec_free_frame(&output_streams[i]->filtered_frame);
422
423         av_freep(&output_streams[i]->forced_keyframes);
424         av_freep(&output_streams[i]->avfilter);
425         av_freep(&output_streams[i]->logfile_prefix);
426         av_freep(&output_streams[i]);
427     }
428     for (i = 0; i < nb_input_files; i++) {
429         avformat_close_input(&input_files[i]->ctx);
430         av_freep(&input_files[i]);
431     }
432     for (i = 0; i < nb_input_streams; i++) {
433         avcodec_free_frame(&input_streams[i]->decoded_frame);
434         av_dict_free(&input_streams[i]->opts);
435         free_buffer_pool(&input_streams[i]->buffer_pool);
436         avfilter_unref_bufferp(&input_streams[i]->sub2video.ref);
437         av_freep(&input_streams[i]->filters);
438         av_freep(&input_streams[i]);
439     }
440
441     if (vstats_file)
442         fclose(vstats_file);
443     av_free(vstats_filename);
444
445     av_freep(&input_streams);
446     av_freep(&input_files);
447     av_freep(&output_streams);
448     av_freep(&output_files);
449
450     uninit_opts();
451
452     avfilter_uninit();
453     avformat_network_deinit();
454
455     if (received_sigterm) {
456         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
457                (int) received_sigterm);
458         exit (255);
459     }
460 }
461
462 void assert_avoptions(AVDictionary *m)
463 {
464     AVDictionaryEntry *t;
465     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
466         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
467         exit(1);
468     }
469 }
470
471 static void abort_codec_experimental(AVCodec *c, int encoder)
472 {
473     exit(1);
474 }
475
476 static void update_benchmark(const char *fmt, ...)
477 {
478     if (do_benchmark_all) {
479         int64_t t = getutime();
480         va_list va;
481         char buf[1024];
482
483         if (fmt) {
484             va_start(va, fmt);
485             vsnprintf(buf, sizeof(buf), fmt, va);
486             va_end(va);
487             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
488         }
489         current_time = t;
490     }
491 }
492
493 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
494 {
495     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
496     AVCodecContext          *avctx = ost->st->codec;
497     int ret;
498
499     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
500         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
501         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
502
503     if ((avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) && pkt->dts != AV_NOPTS_VALUE) {
504         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
505         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
506             av_log(s, max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG,
507                    "st:%d PTS: %"PRId64" DTS: %"PRId64" < %"PRId64" invalid, clipping\n", pkt->stream_index, pkt->pts, pkt->dts, max);
508             if(pkt->pts >= pkt->dts)
509                 pkt->pts = FFMAX(pkt->pts, max);
510             pkt->dts = max;
511         }
512     }
513
514     /*
515      * Audio encoders may split the packets --  #frames in != #packets out.
516      * But there is no reordering, so we can limit the number of output packets
517      * by simply dropping them here.
518      * Counting encoded video frames needs to be done separately because of
519      * reordering, see do_video_out()
520      */
521     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
522         if (ost->frame_number >= ost->max_frames) {
523             av_free_packet(pkt);
524             return;
525         }
526         ost->frame_number++;
527     }
528
529     while (bsfc) {
530         AVPacket new_pkt = *pkt;
531         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
532                                            &new_pkt.data, &new_pkt.size,
533                                            pkt->data, pkt->size,
534                                            pkt->flags & AV_PKT_FLAG_KEY);
535         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
536             uint8_t *t = av_malloc(new_pkt.size + FF_INPUT_BUFFER_PADDING_SIZE); //the new should be a subset of the old so cannot overflow
537             if(t) {
538                 memcpy(t, new_pkt.data, new_pkt.size);
539                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
540                 new_pkt.data = t;
541                 a = 1;
542             } else
543                 a = AVERROR(ENOMEM);
544         }
545         if (a > 0) {
546             av_free_packet(pkt);
547             new_pkt.destruct = av_destruct_packet;
548         } else if (a < 0) {
549             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
550                    bsfc->filter->name, pkt->stream_index,
551                    avctx->codec ? avctx->codec->name : "copy");
552             print_error("", a);
553             if (exit_on_error)
554                 exit(1);
555         }
556         *pkt = new_pkt;
557
558         bsfc = bsfc->next;
559     }
560
561     pkt->stream_index = ost->index;
562
563     if (debug_ts) {
564         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
565                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
566                 av_get_media_type_string(ost->st->codec->codec_type),
567                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
568                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
569                 pkt->size
570               );
571     }
572
573     ret = av_interleaved_write_frame(s, pkt);
574     if (ret < 0) {
575         print_error("av_interleaved_write_frame()", ret);
576         exit(1);
577     }
578 }
579
580 static void close_output_stream(OutputStream *ost)
581 {
582     OutputFile *of = output_files[ost->file_index];
583
584     ost->finished = 1;
585     if (of->shortest) {
586         int i;
587         for (i = 0; i < of->ctx->nb_streams; i++)
588             output_streams[of->ost_index + i]->finished = 1;
589     }
590 }
591
592 static int check_recording_time(OutputStream *ost)
593 {
594     OutputFile *of = output_files[ost->file_index];
595
596     if (of->recording_time != INT64_MAX &&
597         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
598                       AV_TIME_BASE_Q) >= 0) {
599         close_output_stream(ost);
600         return 0;
601     }
602     return 1;
603 }
604
605 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
606                          AVFrame *frame)
607 {
608     AVCodecContext *enc = ost->st->codec;
609     AVPacket pkt;
610     int got_packet = 0;
611
612     av_init_packet(&pkt);
613     pkt.data = NULL;
614     pkt.size = 0;
615
616     if (!check_recording_time(ost))
617         return;
618
619     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
620         frame->pts = ost->sync_opts;
621     ost->sync_opts = frame->pts + frame->nb_samples;
622
623     av_assert0(pkt.size || !pkt.data);
624     update_benchmark(NULL);
625     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
626         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
627         exit(1);
628     }
629     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
630
631     if (got_packet) {
632         if (pkt.pts != AV_NOPTS_VALUE)
633             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
634         if (pkt.dts != AV_NOPTS_VALUE)
635             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
636         if (pkt.duration > 0)
637             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
638
639         if (debug_ts) {
640             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
641                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
642                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
643                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
644         }
645
646         audio_size += pkt.size;
647         write_frame(s, &pkt, ost);
648
649         av_free_packet(&pkt);
650     }
651 }
652
653 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
654 {
655     AVCodecContext *dec;
656     AVPicture *picture2;
657     AVPicture picture_tmp;
658     uint8_t *buf = 0;
659
660     dec = ist->st->codec;
661
662     /* deinterlace : must be done before any resize */
663     if (do_deinterlace) {
664         int size;
665
666         /* create temporary picture */
667         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
668         if (size < 0)
669             return;
670         buf  = av_malloc(size);
671         if (!buf)
672             return;
673
674         picture2 = &picture_tmp;
675         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
676
677         if (avpicture_deinterlace(picture2, picture,
678                                  dec->pix_fmt, dec->width, dec->height) < 0) {
679             /* if error, do not deinterlace */
680             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
681             av_free(buf);
682             buf = NULL;
683             picture2 = picture;
684         }
685     } else {
686         picture2 = picture;
687     }
688
689     if (picture != picture2)
690         *picture = *picture2;
691     *bufp = buf;
692 }
693
694 static void do_subtitle_out(AVFormatContext *s,
695                             OutputStream *ost,
696                             InputStream *ist,
697                             AVSubtitle *sub)
698 {
699     int subtitle_out_max_size = 1024 * 1024;
700     int subtitle_out_size, nb, i;
701     AVCodecContext *enc;
702     AVPacket pkt;
703     int64_t pts;
704
705     if (sub->pts == AV_NOPTS_VALUE) {
706         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
707         if (exit_on_error)
708             exit(1);
709         return;
710     }
711
712     enc = ost->st->codec;
713
714     if (!subtitle_out) {
715         subtitle_out = av_malloc(subtitle_out_max_size);
716     }
717
718     /* Note: DVB subtitle need one packet to draw them and one other
719        packet to clear them */
720     /* XXX: signal it in the codec context ? */
721     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
722         nb = 2;
723     else
724         nb = 1;
725
726     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
727     pts = sub->pts - output_files[ost->file_index]->start_time;
728     for (i = 0; i < nb; i++) {
729         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
730         if (!check_recording_time(ost))
731             return;
732
733         sub->pts = pts;
734         // start_display_time is required to be 0
735         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
736         sub->end_display_time  -= sub->start_display_time;
737         sub->start_display_time = 0;
738         if (i == 1)
739             sub->num_rects = 0;
740         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
741                                                     subtitle_out_max_size, sub);
742         if (subtitle_out_size < 0) {
743             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
744             exit(1);
745         }
746
747         av_init_packet(&pkt);
748         pkt.data = subtitle_out;
749         pkt.size = subtitle_out_size;
750         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
751         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
752         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
753             /* XXX: the pts correction is handled here. Maybe handling
754                it in the codec would be better */
755             if (i == 0)
756                 pkt.pts += 90 * sub->start_display_time;
757             else
758                 pkt.pts += 90 * sub->end_display_time;
759         }
760         subtitle_size += pkt.size;
761         write_frame(s, &pkt, ost);
762     }
763 }
764
765 static void do_video_out(AVFormatContext *s,
766                          OutputStream *ost,
767                          AVFrame *in_picture)
768 {
769     int ret, format_video_sync;
770     AVPacket pkt;
771     AVCodecContext *enc = ost->st->codec;
772     int nb_frames, i;
773     double sync_ipts, delta;
774     double duration = 0;
775     int frame_size = 0;
776     InputStream *ist = NULL;
777
778     if (ost->source_index >= 0)
779         ist = input_streams[ost->source_index];
780
781     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
782         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
783
784     sync_ipts = in_picture->pts;
785     delta = sync_ipts - ost->sync_opts + duration;
786
787     /* by default, we output a single frame */
788     nb_frames = 1;
789
790     format_video_sync = video_sync_method;
791     if (format_video_sync == VSYNC_AUTO)
792         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
793
794     switch (format_video_sync) {
795     case VSYNC_CFR:
796         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
797         if (delta < -1.1)
798             nb_frames = 0;
799         else if (delta > 1.1)
800             nb_frames = lrintf(delta);
801         break;
802     case VSYNC_VFR:
803         if (delta <= -0.6)
804             nb_frames = 0;
805         else if (delta > 0.6)
806             ost->sync_opts = lrint(sync_ipts);
807         break;
808     case VSYNC_DROP:
809     case VSYNC_PASSTHROUGH:
810         ost->sync_opts = lrint(sync_ipts);
811         break;
812     default:
813         av_assert0(0);
814     }
815
816     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
817     if (nb_frames == 0) {
818         nb_frames_drop++;
819         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
820         return;
821     } else if (nb_frames > 1) {
822         if (nb_frames > dts_error_threshold * 30) {
823             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
824             nb_frames_drop++;
825             return;
826         }
827         nb_frames_dup += nb_frames - 1;
828         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
829     }
830
831   /* duplicates frame if needed */
832   for (i = 0; i < nb_frames; i++) {
833     av_init_packet(&pkt);
834     pkt.data = NULL;
835     pkt.size = 0;
836
837     in_picture->pts = ost->sync_opts;
838
839     if (!check_recording_time(ost))
840         return;
841
842     if (s->oformat->flags & AVFMT_RAWPICTURE &&
843         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
844         /* raw pictures are written as AVPicture structure to
845            avoid any copies. We support temporarily the older
846            method. */
847         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
848         enc->coded_frame->top_field_first  = in_picture->top_field_first;
849         if (enc->coded_frame->interlaced_frame)
850             enc->field_order = enc->coded_frame->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
851         else
852             enc->field_order = AV_FIELD_PROGRESSIVE;
853         pkt.data   = (uint8_t *)in_picture;
854         pkt.size   =  sizeof(AVPicture);
855         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
856         pkt.flags |= AV_PKT_FLAG_KEY;
857
858         video_size += pkt.size;
859         write_frame(s, &pkt, ost);
860     } else {
861         int got_packet;
862         AVFrame big_picture;
863
864         big_picture = *in_picture;
865         /* better than nothing: use input picture interlaced
866            settings */
867         big_picture.interlaced_frame = in_picture->interlaced_frame;
868         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
869             if (ost->top_field_first == -1)
870                 big_picture.top_field_first = in_picture->top_field_first;
871             else
872                 big_picture.top_field_first = !!ost->top_field_first;
873         }
874
875         if (big_picture.interlaced_frame) {
876             if (enc->codec->id == AV_CODEC_ID_MJPEG)
877                 enc->field_order = big_picture.top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
878             else
879                 enc->field_order = big_picture.top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
880         } else
881             enc->field_order = AV_FIELD_PROGRESSIVE;
882
883         big_picture.quality = ost->st->codec->global_quality;
884         if (!enc->me_threshold)
885             big_picture.pict_type = 0;
886         if (ost->forced_kf_index < ost->forced_kf_count &&
887             big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
888             big_picture.pict_type = AV_PICTURE_TYPE_I;
889             ost->forced_kf_index++;
890         }
891         update_benchmark(NULL);
892         ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
893         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
894         if (ret < 0) {
895             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
896             exit(1);
897         }
898
899         if (got_packet) {
900             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
901                 pkt.pts = ost->sync_opts;
902
903             if (pkt.pts != AV_NOPTS_VALUE)
904                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
905             if (pkt.dts != AV_NOPTS_VALUE)
906                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
907
908             if (debug_ts) {
909                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
910                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
911                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
912                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
913             }
914
915             frame_size = pkt.size;
916             video_size += pkt.size;
917             write_frame(s, &pkt, ost);
918             av_free_packet(&pkt);
919
920             /* if two pass, output log */
921             if (ost->logfile && enc->stats_out) {
922                 fprintf(ost->logfile, "%s", enc->stats_out);
923             }
924         }
925     }
926     ost->sync_opts++;
927     /*
928      * For video, number of frames in == number of packets out.
929      * But there may be reordering, so we can't throw away frames on encoder
930      * flush, we need to limit them here, before they go into encoder.
931      */
932     ost->frame_number++;
933   }
934
935     if (vstats_filename && frame_size)
936         do_video_stats(ost, frame_size);
937 }
938
939 static double psnr(double d)
940 {
941     return -10.0 * log(d) / log(10.0);
942 }
943
944 static void do_video_stats(OutputStream *ost, int frame_size)
945 {
946     AVCodecContext *enc;
947     int frame_number;
948     double ti1, bitrate, avg_bitrate;
949
950     /* this is executed just the first time do_video_stats is called */
951     if (!vstats_file) {
952         vstats_file = fopen(vstats_filename, "w");
953         if (!vstats_file) {
954             perror("fopen");
955             exit(1);
956         }
957     }
958
959     enc = ost->st->codec;
960     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
961         frame_number = ost->frame_number;
962         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
963         if (enc->flags&CODEC_FLAG_PSNR)
964             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
965
966         fprintf(vstats_file,"f_size= %6d ", frame_size);
967         /* compute pts value */
968         ti1 = ost->sync_opts * av_q2d(enc->time_base);
969         if (ti1 < 0.01)
970             ti1 = 0.01;
971
972         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
973         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
974         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
975                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
976         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
977     }
978 }
979
980 /**
981  * Get and encode new output from any of the filtergraphs, without causing
982  * activity.
983  *
984  * @return  0 for success, <0 for severe errors
985  */
986 static int reap_filters(void)
987 {
988     AVFilterBufferRef *picref;
989     AVFrame *filtered_frame = NULL;
990     int i;
991     int64_t frame_pts;
992
993     /* Reap all buffers present in the buffer sinks */
994     for (i = 0; i < nb_output_streams; i++) {
995         OutputStream *ost = output_streams[i];
996         OutputFile    *of = output_files[ost->file_index];
997         int ret = 0;
998
999         if (!ost->filter)
1000             continue;
1001
1002         if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1003             return AVERROR(ENOMEM);
1004         } else
1005             avcodec_get_frame_defaults(ost->filtered_frame);
1006         filtered_frame = ost->filtered_frame;
1007
1008         while (1) {
1009             ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
1010                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1011             if (ret < 0) {
1012                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1013                     char buf[256];
1014                     av_strerror(ret, buf, sizeof(buf));
1015                     av_log(NULL, AV_LOG_WARNING,
1016                            "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
1017                 }
1018                 break;
1019             }
1020             frame_pts = AV_NOPTS_VALUE;
1021             if (picref->pts != AV_NOPTS_VALUE) {
1022                 filtered_frame->pts = frame_pts = av_rescale_q(picref->pts,
1023                                                 ost->filter->filter->inputs[0]->time_base,
1024                                                 ost->st->codec->time_base) -
1025                                     av_rescale_q(of->start_time,
1026                                                 AV_TIME_BASE_Q,
1027                                                 ost->st->codec->time_base);
1028
1029                 if (of->start_time && filtered_frame->pts < 0) {
1030                     avfilter_unref_buffer(picref);
1031                     continue;
1032                 }
1033             }
1034             //if (ost->source_index >= 0)
1035             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1036
1037
1038             switch (ost->filter->filter->inputs[0]->type) {
1039             case AVMEDIA_TYPE_VIDEO:
1040                 avfilter_copy_buf_props(filtered_frame, picref);
1041                 filtered_frame->pts = frame_pts;
1042                 if (!ost->frame_aspect_ratio)
1043                     ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
1044
1045                 do_video_out(of->ctx, ost, filtered_frame);
1046                 break;
1047             case AVMEDIA_TYPE_AUDIO:
1048                 avfilter_copy_buf_props(filtered_frame, picref);
1049                 filtered_frame->pts = frame_pts;
1050                 do_audio_out(of->ctx, ost, filtered_frame);
1051                 break;
1052             default:
1053                 // TODO support subtitle filters
1054                 av_assert0(0);
1055             }
1056
1057             avfilter_unref_buffer(picref);
1058         }
1059     }
1060
1061     return 0;
1062 }
1063
1064 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1065 {
1066     char buf[1024];
1067     AVBPrint buf_script;
1068     OutputStream *ost;
1069     AVFormatContext *oc;
1070     int64_t total_size;
1071     AVCodecContext *enc;
1072     int frame_number, vid, i;
1073     double bitrate;
1074     int64_t pts = INT64_MIN;
1075     static int64_t last_time = -1;
1076     static int qp_histogram[52];
1077     int hours, mins, secs, us;
1078
1079     if (!print_stats && !is_last_report && !progress_avio)
1080         return;
1081
1082     if (!is_last_report) {
1083         if (last_time == -1) {
1084             last_time = cur_time;
1085             return;
1086         }
1087         if ((cur_time - last_time) < 500000)
1088             return;
1089         last_time = cur_time;
1090     }
1091
1092
1093     oc = output_files[0]->ctx;
1094
1095     total_size = avio_size(oc->pb);
1096     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1097         total_size = avio_tell(oc->pb);
1098     if (total_size < 0) {
1099         char errbuf[128];
1100         av_strerror(total_size, errbuf, sizeof(errbuf));
1101         av_log(NULL, AV_LOG_VERBOSE, "Bitrate not available, "
1102                "avio_tell() failed: %s\n", errbuf);
1103         total_size = 0;
1104     }
1105
1106     buf[0] = '\0';
1107     vid = 0;
1108     av_bprint_init(&buf_script, 0, 1);
1109     for (i = 0; i < nb_output_streams; i++) {
1110         float q = -1;
1111         ost = output_streams[i];
1112         enc = ost->st->codec;
1113         if (!ost->stream_copy && enc->coded_frame)
1114             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1115         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1116             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1117             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1118                        ost->file_index, ost->index, q);
1119         }
1120         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1121             float fps, t = (cur_time-timer_start) / 1000000.0;
1122
1123             frame_number = ost->frame_number;
1124             fps = t > 1 ? frame_number / t : 0;
1125             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1126                      frame_number, fps < 9.95, fps, q);
1127             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1128             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1129             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1130                        ost->file_index, ost->index, q);
1131             if (is_last_report)
1132                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1133             if (qp_hist) {
1134                 int j;
1135                 int qp = lrintf(q);
1136                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1137                     qp_histogram[qp]++;
1138                 for (j = 0; j < 32; j++)
1139                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1140             }
1141             if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1142                 int j;
1143                 double error, error_sum = 0;
1144                 double scale, scale_sum = 0;
1145                 double p;
1146                 char type[3] = { 'Y','U','V' };
1147                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1148                 for (j = 0; j < 3; j++) {
1149                     if (is_last_report) {
1150                         error = enc->error[j];
1151                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1152                     } else {
1153                         error = enc->coded_frame->error[j];
1154                         scale = enc->width * enc->height * 255.0 * 255.0;
1155                     }
1156                     if (j)
1157                         scale /= 4;
1158                     error_sum += error;
1159                     scale_sum += scale;
1160                     p = psnr(error / scale);
1161                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1162                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1163                                ost->file_index, ost->index, type[i] | 32, p);
1164                 }
1165                 p = psnr(error_sum / scale_sum);
1166                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1167                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1168                            ost->file_index, ost->index, p);
1169             }
1170             vid = 1;
1171         }
1172         /* compute min output value */
1173         if ((is_last_report || !ost->finished) && ost->st->pts.val != AV_NOPTS_VALUE)
1174             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1175                                           ost->st->time_base, AV_TIME_BASE_Q));
1176     }
1177
1178     secs = pts / AV_TIME_BASE;
1179     us = pts % AV_TIME_BASE;
1180     mins = secs / 60;
1181     secs %= 60;
1182     hours = mins / 60;
1183     mins %= 60;
1184
1185     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1186
1187     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1188              "size=%8.0fkB time=", total_size / 1024.0);
1189     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1190              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1191              (100 * us) / AV_TIME_BASE);
1192     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1193              "bitrate=%6.1fkbits/s", bitrate);
1194     av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1195     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1196     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1197                hours, mins, secs, us);
1198
1199     if (nb_frames_dup || nb_frames_drop)
1200         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1201                 nb_frames_dup, nb_frames_drop);
1202     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1203     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1204
1205     if (print_stats || is_last_report) {
1206     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1207
1208     fflush(stderr);
1209     }
1210
1211     if (progress_avio) {
1212         av_bprintf(&buf_script, "progress=%s\n",
1213                    is_last_report ? "end" : "continue");
1214         avio_write(progress_avio, buf_script.str,
1215                    FFMIN(buf_script.len, buf_script.size - 1));
1216         avio_flush(progress_avio);
1217         av_bprint_finalize(&buf_script, NULL);
1218         if (is_last_report) {
1219             avio_close(progress_avio);
1220             progress_avio = NULL;
1221         }
1222     }
1223
1224     if (is_last_report) {
1225         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1226         av_log(NULL, AV_LOG_INFO, "\n");
1227         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1228                video_size / 1024.0,
1229                audio_size / 1024.0,
1230                subtitle_size / 1024.0,
1231                extra_size / 1024.0,
1232                100.0 * (total_size - raw) / raw
1233         );
1234         if(video_size + audio_size + subtitle_size + extra_size == 0){
1235             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1236         }
1237     }
1238 }
1239
1240 static void flush_encoders(void)
1241 {
1242     int i, ret;
1243
1244     for (i = 0; i < nb_output_streams; i++) {
1245         OutputStream   *ost = output_streams[i];
1246         AVCodecContext *enc = ost->st->codec;
1247         AVFormatContext *os = output_files[ost->file_index]->ctx;
1248         int stop_encoding = 0;
1249
1250         if (!ost->encoding_needed)
1251             continue;
1252
1253         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1254             continue;
1255         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1256             continue;
1257
1258         for (;;) {
1259             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1260             const char *desc;
1261             int64_t *size;
1262
1263             switch (ost->st->codec->codec_type) {
1264             case AVMEDIA_TYPE_AUDIO:
1265                 encode = avcodec_encode_audio2;
1266                 desc   = "Audio";
1267                 size   = &audio_size;
1268                 break;
1269             case AVMEDIA_TYPE_VIDEO:
1270                 encode = avcodec_encode_video2;
1271                 desc   = "Video";
1272                 size   = &video_size;
1273                 break;
1274             default:
1275                 stop_encoding = 1;
1276             }
1277
1278             if (encode) {
1279                 AVPacket pkt;
1280                 int got_packet;
1281                 av_init_packet(&pkt);
1282                 pkt.data = NULL;
1283                 pkt.size = 0;
1284
1285                 update_benchmark(NULL);
1286                 ret = encode(enc, &pkt, NULL, &got_packet);
1287                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1288                 if (ret < 0) {
1289                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1290                     exit(1);
1291                 }
1292                 *size += pkt.size;
1293                 if (ost->logfile && enc->stats_out) {
1294                     fprintf(ost->logfile, "%s", enc->stats_out);
1295                 }
1296                 if (!got_packet) {
1297                     stop_encoding = 1;
1298                     break;
1299                 }
1300                 if (pkt.pts != AV_NOPTS_VALUE)
1301                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1302                 if (pkt.dts != AV_NOPTS_VALUE)
1303                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1304                 if (pkt.duration > 0)
1305                     pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1306                 write_frame(os, &pkt, ost);
1307                 ost->frame_number ++;
1308                 ost->sync_opts ++;
1309                 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
1310                   do_video_stats(ost, pkt.size);
1311                 }
1312             }
1313
1314             if (stop_encoding)
1315                 break;
1316         }
1317     }
1318 }
1319
1320 /*
1321  * Check whether a packet from ist should be written into ost at this time
1322  */
1323 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1324 {
1325     OutputFile *of = output_files[ost->file_index];
1326     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1327
1328     if (ost->source_index != ist_index)
1329         return 0;
1330
1331     if (of->start_time && ist->pts < of->start_time)
1332         return 0;
1333
1334     return 1;
1335 }
1336
1337 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1338 {
1339     OutputFile *of = output_files[ost->file_index];
1340     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1341     AVPicture pict;
1342     AVPacket opkt;
1343
1344     av_init_packet(&opkt);
1345
1346     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1347         !ost->copy_initial_nonkeyframes)
1348         return;
1349
1350     if (!ost->frame_number && ist->pts < of->start_time &&
1351         !ost->copy_prior_start)
1352         return;
1353
1354     if (of->recording_time != INT64_MAX &&
1355         ist->pts >= of->recording_time + of->start_time) {
1356         close_output_stream(ost);
1357         return;
1358     }
1359
1360     /* force the input stream PTS */
1361     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1362         audio_size += pkt->size;
1363     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1364         video_size += pkt->size;
1365         ost->sync_opts++;
1366     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1367         subtitle_size += pkt->size;
1368     }
1369
1370     if (pkt->pts != AV_NOPTS_VALUE)
1371         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1372     else
1373         opkt.pts = AV_NOPTS_VALUE;
1374
1375     if (pkt->dts == AV_NOPTS_VALUE)
1376         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1377     else
1378         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1379     opkt.dts -= ost_tb_start_time;
1380
1381     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1382         int duration = av_get_audio_frame_duration(ist->st->codec, pkt->size);
1383         if(!duration)
1384             duration = ist->st->codec->frame_size;
1385         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1386                                                (AVRational){1, ist->st->codec->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
1387                                                ost->st->time_base) - ost_tb_start_time;
1388     }
1389
1390     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1391     opkt.flags    = pkt->flags;
1392
1393     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1394     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1395        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1396        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1397        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1398        ) {
1399         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1400             opkt.destruct = av_destruct_packet;
1401     } else {
1402         opkt.data = pkt->data;
1403         opkt.size = pkt->size;
1404     }
1405
1406     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1407         /* store AVPicture in AVPacket, as expected by the output format */
1408         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1409         opkt.data = (uint8_t *)&pict;
1410         opkt.size = sizeof(AVPicture);
1411         opkt.flags |= AV_PKT_FLAG_KEY;
1412     }
1413
1414     write_frame(of->ctx, &opkt, ost);
1415     ost->st->codec->frame_number++;
1416 }
1417
1418 static void rate_emu_sleep(InputStream *ist)
1419 {
1420     if (input_files[ist->file_index]->rate_emu) {
1421         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
1422         int64_t now = av_gettime() - ist->start;
1423         if (pts > now)
1424             av_usleep(pts - now);
1425     }
1426 }
1427
1428 int guess_input_channel_layout(InputStream *ist)
1429 {
1430     AVCodecContext *dec = ist->st->codec;
1431
1432     if (!dec->channel_layout) {
1433         char layout_name[256];
1434
1435         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1436         if (!dec->channel_layout)
1437             return 0;
1438         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1439                                      dec->channels, dec->channel_layout);
1440         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1441                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1442     }
1443     return 1;
1444 }
1445
1446 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1447 {
1448     AVFrame *decoded_frame;
1449     AVCodecContext *avctx = ist->st->codec;
1450     int i, ret, resample_changed;
1451     AVRational decoded_frame_tb;
1452
1453     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1454         return AVERROR(ENOMEM);
1455     decoded_frame = ist->decoded_frame;
1456
1457     update_benchmark(NULL);
1458     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1459     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1460
1461     if (ret >= 0 && avctx->sample_rate <= 0) {
1462         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1463         ret = AVERROR_INVALIDDATA;
1464     }
1465
1466     if (!*got_output || ret < 0) {
1467         if (!pkt->size) {
1468             for (i = 0; i < ist->nb_filters; i++)
1469                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1470         }
1471         return ret;
1472     }
1473
1474 #if 1
1475     /* increment next_dts to use for the case where the input stream does not
1476        have timestamps or there are multiple frames in the packet */
1477     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1478                      avctx->sample_rate;
1479     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1480                      avctx->sample_rate;
1481 #endif
1482
1483     rate_emu_sleep(ist);
1484
1485     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1486                        ist->resample_channels       != avctx->channels               ||
1487                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1488                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1489     if (resample_changed) {
1490         char layout1[64], layout2[64];
1491
1492         if (!guess_input_channel_layout(ist)) {
1493             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1494                    "layout for Input Stream #%d.%d\n", ist->file_index,
1495                    ist->st->index);
1496             exit(1);
1497         }
1498         decoded_frame->channel_layout = avctx->channel_layout;
1499
1500         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1501                                      ist->resample_channel_layout);
1502         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1503                                      decoded_frame->channel_layout);
1504
1505         av_log(NULL, AV_LOG_INFO,
1506                "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",
1507                ist->file_index, ist->st->index,
1508                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1509                ist->resample_channels, layout1,
1510                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1511                avctx->channels, layout2);
1512
1513         ist->resample_sample_fmt     = decoded_frame->format;
1514         ist->resample_sample_rate    = decoded_frame->sample_rate;
1515         ist->resample_channel_layout = decoded_frame->channel_layout;
1516         ist->resample_channels       = avctx->channels;
1517
1518         for (i = 0; i < nb_filtergraphs; i++)
1519             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1520                 FilterGraph *fg = filtergraphs[i];
1521                 int j;
1522                 if (configure_filtergraph(fg) < 0) {
1523                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1524                     exit(1);
1525                 }
1526                 for (j = 0; j < fg->nb_outputs; j++) {
1527                     OutputStream *ost = fg->outputs[j]->ost;
1528                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1529                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1530                         av_buffersink_set_frame_size(ost->filter->filter,
1531                                                      ost->st->codec->frame_size);
1532                 }
1533             }
1534     }
1535
1536     /* if the decoder provides a pts, use it instead of the last packet pts.
1537        the decoder could be delaying output by a packet or more. */
1538     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1539         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1540         decoded_frame_tb   = avctx->time_base;
1541     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1542         decoded_frame->pts = decoded_frame->pkt_pts;
1543         pkt->pts           = AV_NOPTS_VALUE;
1544         decoded_frame_tb   = ist->st->time_base;
1545     } else if (pkt->pts != AV_NOPTS_VALUE) {
1546         decoded_frame->pts = pkt->pts;
1547         pkt->pts           = AV_NOPTS_VALUE;
1548         decoded_frame_tb   = ist->st->time_base;
1549     }else {
1550         decoded_frame->pts = ist->dts;
1551         decoded_frame_tb   = AV_TIME_BASE_Q;
1552     }
1553     if (decoded_frame->pts != AV_NOPTS_VALUE)
1554         decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
1555                                               (AVRational){1, ist->st->codec->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
1556                                               (AVRational){1, ist->st->codec->sample_rate});
1557     for (i = 0; i < ist->nb_filters; i++)
1558         av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame,
1559                                AV_BUFFERSRC_FLAG_PUSH);
1560
1561     decoded_frame->pts = AV_NOPTS_VALUE;
1562
1563     return ret;
1564 }
1565
1566 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1567 {
1568     AVFrame *decoded_frame;
1569     void *buffer_to_free = NULL;
1570     int i, ret = 0, resample_changed;
1571     int64_t best_effort_timestamp;
1572     AVRational *frame_sample_aspect;
1573
1574     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1575         return AVERROR(ENOMEM);
1576     decoded_frame = ist->decoded_frame;
1577     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1578
1579     update_benchmark(NULL);
1580     ret = avcodec_decode_video2(ist->st->codec,
1581                                 decoded_frame, got_output, pkt);
1582     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1583     if (!*got_output || ret < 0) {
1584         if (!pkt->size) {
1585             for (i = 0; i < ist->nb_filters; i++)
1586                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1587         }
1588         return ret;
1589     }
1590
1591     if(ist->top_field_first>=0)
1592         decoded_frame->top_field_first = ist->top_field_first;
1593
1594     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1595     if(best_effort_timestamp != AV_NOPTS_VALUE)
1596         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1597
1598     if (debug_ts) {
1599         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1600                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1601                 ist->st->index, av_ts2str(decoded_frame->pts),
1602                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1603                 best_effort_timestamp,
1604                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1605                 decoded_frame->key_frame, decoded_frame->pict_type);
1606     }
1607
1608     pkt->size = 0;
1609     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1610
1611     rate_emu_sleep(ist);
1612
1613     if (ist->st->sample_aspect_ratio.num)
1614         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1615
1616     resample_changed = ist->resample_width   != decoded_frame->width  ||
1617                        ist->resample_height  != decoded_frame->height ||
1618                        ist->resample_pix_fmt != decoded_frame->format;
1619     if (resample_changed) {
1620         av_log(NULL, AV_LOG_INFO,
1621                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1622                ist->file_index, ist->st->index,
1623                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1624                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1625
1626         ist->resample_width   = decoded_frame->width;
1627         ist->resample_height  = decoded_frame->height;
1628         ist->resample_pix_fmt = decoded_frame->format;
1629
1630         for (i = 0; i < nb_filtergraphs; i++) {
1631             if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
1632                 configure_filtergraph(filtergraphs[i]) < 0) {
1633                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1634                 exit(1);
1635             }
1636         }
1637     }
1638
1639     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1640     for (i = 0; i < ist->nb_filters; i++) {
1641         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
1642                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
1643                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
1644
1645         if (!frame_sample_aspect->num)
1646             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1647         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
1648             FrameBuffer      *buf = decoded_frame->opaque;
1649             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1650                                         decoded_frame->data, decoded_frame->linesize,
1651                                         AV_PERM_READ | AV_PERM_PRESERVE,
1652                                         ist->st->codec->width, ist->st->codec->height,
1653                                         ist->st->codec->pix_fmt);
1654
1655             avfilter_copy_frame_props(fb, decoded_frame);
1656             fb->buf->priv           = buf;
1657             fb->buf->free           = filter_release_buffer;
1658
1659             av_assert0(buf->refcount>0);
1660             buf->refcount++;
1661             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
1662                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
1663                                  AV_BUFFERSRC_FLAG_NO_COPY |
1664                                  AV_BUFFERSRC_FLAG_PUSH);
1665         } else
1666         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, AV_BUFFERSRC_FLAG_PUSH)<0) {
1667             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
1668             exit(1);
1669         }
1670
1671     }
1672
1673     av_free(buffer_to_free);
1674     return ret;
1675 }
1676
1677 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1678 {
1679     AVSubtitle subtitle;
1680     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1681                                           &subtitle, got_output, pkt);
1682     if (ret < 0 || !*got_output) {
1683         if (!pkt->size)
1684             sub2video_flush(ist);
1685         return ret;
1686     }
1687
1688     if (ist->fix_sub_duration) {
1689         if (ist->prev_sub.got_output) {
1690             int end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1691                                  1000, AV_TIME_BASE);
1692             if (end < ist->prev_sub.subtitle.end_display_time) {
1693                 av_log(ist->st->codec, AV_LOG_DEBUG,
1694                        "Subtitle duration reduced from %d to %d\n",
1695                        ist->prev_sub.subtitle.end_display_time, end);
1696                 ist->prev_sub.subtitle.end_display_time = end;
1697             }
1698         }
1699         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1700         FFSWAP(int,        ret,         ist->prev_sub.ret);
1701         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1702     }
1703
1704     sub2video_update(ist, &subtitle);
1705
1706     if (!*got_output || !subtitle.num_rects)
1707         return ret;
1708
1709     rate_emu_sleep(ist);
1710
1711     for (i = 0; i < nb_output_streams; i++) {
1712         OutputStream *ost = output_streams[i];
1713
1714         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1715             continue;
1716
1717         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
1718     }
1719
1720     avsubtitle_free(&subtitle);
1721     return ret;
1722 }
1723
1724 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1725 static int output_packet(InputStream *ist, const AVPacket *pkt)
1726 {
1727     int ret = 0, i;
1728     int got_output;
1729
1730     AVPacket avpkt;
1731     if (!ist->saw_first_ts) {
1732         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;
1733         ist->pts = 0;
1734         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1735             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1736             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1737         }
1738         ist->saw_first_ts = 1;
1739     }
1740
1741     if (ist->next_dts == AV_NOPTS_VALUE)
1742         ist->next_dts = ist->dts;
1743     if (ist->next_pts == AV_NOPTS_VALUE)
1744         ist->next_pts = ist->pts;
1745
1746     if (pkt == NULL) {
1747         /* EOF handling */
1748         av_init_packet(&avpkt);
1749         avpkt.data = NULL;
1750         avpkt.size = 0;
1751         goto handle_eof;
1752     } else {
1753         avpkt = *pkt;
1754     }
1755
1756     if (pkt->dts != AV_NOPTS_VALUE) {
1757         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1758         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1759             ist->next_pts = ist->pts = ist->dts;
1760     }
1761
1762     // while we have more to decode or while the decoder did output something on EOF
1763     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1764         int duration;
1765     handle_eof:
1766
1767         ist->pts = ist->next_pts;
1768         ist->dts = ist->next_dts;
1769
1770         if (avpkt.size && avpkt.size != pkt->size) {
1771             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1772                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1773             ist->showed_multi_packet_warning = 1;
1774         }
1775
1776         switch (ist->st->codec->codec_type) {
1777         case AVMEDIA_TYPE_AUDIO:
1778             ret = decode_audio    (ist, &avpkt, &got_output);
1779             break;
1780         case AVMEDIA_TYPE_VIDEO:
1781             ret = decode_video    (ist, &avpkt, &got_output);
1782             if (avpkt.duration) {
1783                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1784             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1785                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1786                 duration = ((int64_t)AV_TIME_BASE *
1787                                 ist->st->codec->time_base.num * ticks) /
1788                                 ist->st->codec->time_base.den;
1789             } else
1790                 duration = 0;
1791
1792             if(ist->dts != AV_NOPTS_VALUE && duration) {
1793                 ist->next_dts += duration;
1794             }else
1795                 ist->next_dts = AV_NOPTS_VALUE;
1796
1797             if (got_output)
1798                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1799             break;
1800         case AVMEDIA_TYPE_SUBTITLE:
1801             ret = transcode_subtitles(ist, &avpkt, &got_output);
1802             break;
1803         default:
1804             return -1;
1805         }
1806
1807         if (ret < 0)
1808             return ret;
1809
1810         avpkt.dts=
1811         avpkt.pts= AV_NOPTS_VALUE;
1812
1813         // touch data and size only if not EOF
1814         if (pkt) {
1815             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1816                 ret = avpkt.size;
1817             avpkt.data += ret;
1818             avpkt.size -= ret;
1819         }
1820         if (!got_output) {
1821             continue;
1822         }
1823     }
1824
1825     /* handle stream copy */
1826     if (!ist->decoding_needed) {
1827         rate_emu_sleep(ist);
1828         ist->dts = ist->next_dts;
1829         switch (ist->st->codec->codec_type) {
1830         case AVMEDIA_TYPE_AUDIO:
1831             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1832                              ist->st->codec->sample_rate;
1833             break;
1834         case AVMEDIA_TYPE_VIDEO:
1835             if (pkt->duration) {
1836                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1837             } else if(ist->st->codec->time_base.num != 0) {
1838                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1839                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1840                                   ist->st->codec->time_base.num * ticks) /
1841                                   ist->st->codec->time_base.den;
1842             }
1843             break;
1844         }
1845         ist->pts = ist->dts;
1846         ist->next_pts = ist->next_dts;
1847     }
1848     for (i = 0; pkt && i < nb_output_streams; i++) {
1849         OutputStream *ost = output_streams[i];
1850
1851         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1852             continue;
1853
1854         do_streamcopy(ist, ost, pkt);
1855     }
1856
1857     return 0;
1858 }
1859
1860 static void print_sdp(void)
1861 {
1862     char sdp[2048];
1863     int i;
1864     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1865
1866     if (!avc)
1867         exit(1);
1868     for (i = 0; i < nb_output_files; i++)
1869         avc[i] = output_files[i]->ctx;
1870
1871     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1872     printf("SDP:\n%s\n", sdp);
1873     fflush(stdout);
1874     av_freep(&avc);
1875 }
1876
1877 static int init_input_stream(int ist_index, char *error, int error_len)
1878 {
1879     int ret;
1880     InputStream *ist = input_streams[ist_index];
1881
1882     if (ist->decoding_needed) {
1883         AVCodec *codec = ist->dec;
1884         if (!codec) {
1885             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1886                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1887             return AVERROR(EINVAL);
1888         }
1889
1890         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
1891         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
1892             ist->st->codec->get_buffer     = codec_get_buffer;
1893             ist->st->codec->release_buffer = codec_release_buffer;
1894             ist->st->codec->opaque         = &ist->buffer_pool;
1895         }
1896
1897         if (!av_dict_get(ist->opts, "threads", NULL, 0))
1898             av_dict_set(&ist->opts, "threads", "auto", 0);
1899         if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
1900             if (ret == AVERROR_EXPERIMENTAL)
1901                 abort_codec_experimental(codec, 0);
1902             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1903                     ist->file_index, ist->st->index);
1904             return ret;
1905         }
1906         assert_avoptions(ist->opts);
1907     }
1908
1909     ist->next_pts = AV_NOPTS_VALUE;
1910     ist->next_dts = AV_NOPTS_VALUE;
1911     ist->is_start = 1;
1912
1913     return 0;
1914 }
1915
1916 static InputStream *get_input_stream(OutputStream *ost)
1917 {
1918     if (ost->source_index >= 0)
1919         return input_streams[ost->source_index];
1920     return NULL;
1921 }
1922
1923 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1924                                     AVCodecContext *avctx)
1925 {
1926     char *p;
1927     int n = 1, i;
1928     int64_t t;
1929
1930     for (p = kf; *p; p++)
1931         if (*p == ',')
1932             n++;
1933     ost->forced_kf_count = n;
1934     ost->forced_kf_pts   = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1935     if (!ost->forced_kf_pts) {
1936         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1937         exit(1);
1938     }
1939
1940     p = kf;
1941     for (i = 0; i < n; i++) {
1942         char *next = strchr(p, ',');
1943
1944         if (next)
1945             *next++ = 0;
1946
1947         t = parse_time_or_die("force_key_frames", p, 1);
1948         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1949
1950         p = next;
1951     }
1952 }
1953
1954 static void report_new_stream(int input_index, AVPacket *pkt)
1955 {
1956     InputFile *file = input_files[input_index];
1957     AVStream *st = file->ctx->streams[pkt->stream_index];
1958
1959     if (pkt->stream_index < file->nb_streams_warn)
1960         return;
1961     av_log(file->ctx, AV_LOG_WARNING,
1962            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
1963            av_get_media_type_string(st->codec->codec_type),
1964            input_index, pkt->stream_index,
1965            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
1966     file->nb_streams_warn = pkt->stream_index + 1;
1967 }
1968
1969 static int transcode_init(void)
1970 {
1971     int ret = 0, i, j, k;
1972     AVFormatContext *oc;
1973     AVCodecContext *codec;
1974     OutputStream *ost;
1975     InputStream *ist;
1976     char error[1024];
1977     int want_sdp = 1;
1978
1979     /* init framerate emulation */
1980     for (i = 0; i < nb_input_files; i++) {
1981         InputFile *ifile = input_files[i];
1982         if (ifile->rate_emu)
1983             for (j = 0; j < ifile->nb_streams; j++)
1984                 input_streams[j + ifile->ist_index]->start = av_gettime();
1985     }
1986
1987     /* output stream init */
1988     for (i = 0; i < nb_output_files; i++) {
1989         oc = output_files[i]->ctx;
1990         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
1991             av_dump_format(oc, i, oc->filename, 1);
1992             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
1993             return AVERROR(EINVAL);
1994         }
1995     }
1996
1997     /* init complex filtergraphs */
1998     for (i = 0; i < nb_filtergraphs; i++)
1999         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2000             return ret;
2001
2002     /* for each output stream, we compute the right encoding parameters */
2003     for (i = 0; i < nb_output_streams; i++) {
2004         AVCodecContext *icodec = NULL;
2005         ost = output_streams[i];
2006         oc  = output_files[ost->file_index]->ctx;
2007         ist = get_input_stream(ost);
2008
2009         if (ost->attachment_filename)
2010             continue;
2011
2012         codec  = ost->st->codec;
2013
2014         if (ist) {
2015             icodec = ist->st->codec;
2016
2017             ost->st->disposition          = ist->st->disposition;
2018             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2019             codec->chroma_sample_location = icodec->chroma_sample_location;
2020         }
2021
2022         if (ost->stream_copy) {
2023             uint64_t extra_size;
2024
2025             av_assert0(ist && !ost->filter);
2026
2027             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2028
2029             if (extra_size > INT_MAX) {
2030                 return AVERROR(EINVAL);
2031             }
2032
2033             /* if stream_copy is selected, no need to decode or encode */
2034             codec->codec_id   = icodec->codec_id;
2035             codec->codec_type = icodec->codec_type;
2036
2037             if (!codec->codec_tag) {
2038                 if (!oc->oformat->codec_tag ||
2039                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2040                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2041                     codec->codec_tag = icodec->codec_tag;
2042             }
2043
2044             codec->bit_rate       = icodec->bit_rate;
2045             codec->rc_max_rate    = icodec->rc_max_rate;
2046             codec->rc_buffer_size = icodec->rc_buffer_size;
2047             codec->field_order    = icodec->field_order;
2048             codec->extradata      = av_mallocz(extra_size);
2049             if (!codec->extradata) {
2050                 return AVERROR(ENOMEM);
2051             }
2052             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2053             codec->extradata_size= icodec->extradata_size;
2054             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2055
2056             codec->time_base = ist->st->time_base;
2057             /*
2058              * Avi is a special case here because it supports variable fps but
2059              * having the fps and timebase differe significantly adds quite some
2060              * overhead
2061              */
2062             if(!strcmp(oc->oformat->name, "avi")) {
2063                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2064                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2065                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2066                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2067                      || copy_tb==2){
2068                     codec->time_base.num = ist->st->r_frame_rate.den;
2069                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2070                     codec->ticks_per_frame = 2;
2071                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2072                                  && av_q2d(ist->st->time_base) < 1.0/500
2073                     || copy_tb==0){
2074                     codec->time_base = icodec->time_base;
2075                     codec->time_base.num *= icodec->ticks_per_frame;
2076                     codec->time_base.den *= 2;
2077                     codec->ticks_per_frame = 2;
2078                 }
2079             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2080                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2081                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2082                       && strcmp(oc->oformat->name, "f4v")
2083             ) {
2084                 if(   copy_tb<0 && icodec->time_base.den
2085                                 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2086                                 && av_q2d(ist->st->time_base) < 1.0/500
2087                    || copy_tb==0){
2088                     codec->time_base = icodec->time_base;
2089                     codec->time_base.num *= icodec->ticks_per_frame;
2090                 }
2091             }
2092
2093             if(ost->frame_rate.num)
2094                 codec->time_base = av_inv_q(ost->frame_rate);
2095
2096             av_reduce(&codec->time_base.num, &codec->time_base.den,
2097                         codec->time_base.num, codec->time_base.den, INT_MAX);
2098
2099             switch (codec->codec_type) {
2100             case AVMEDIA_TYPE_AUDIO:
2101                 if (audio_volume != 256) {
2102                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2103                     exit(1);
2104                 }
2105                 codec->channel_layout     = icodec->channel_layout;
2106                 codec->sample_rate        = icodec->sample_rate;
2107                 codec->channels           = icodec->channels;
2108                 codec->frame_size         = icodec->frame_size;
2109                 codec->audio_service_type = icodec->audio_service_type;
2110                 codec->block_align        = icodec->block_align;
2111                 if((codec->block_align == 1 || codec->block_align == 1152) && codec->codec_id == AV_CODEC_ID_MP3)
2112                     codec->block_align= 0;
2113                 if(codec->codec_id == AV_CODEC_ID_AC3)
2114                     codec->block_align= 0;
2115                 break;
2116             case AVMEDIA_TYPE_VIDEO:
2117                 codec->pix_fmt            = icodec->pix_fmt;
2118                 codec->width              = icodec->width;
2119                 codec->height             = icodec->height;
2120                 codec->has_b_frames       = icodec->has_b_frames;
2121                 if (!codec->sample_aspect_ratio.num) {
2122                     codec->sample_aspect_ratio   =
2123                     ost->st->sample_aspect_ratio =
2124                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2125                         ist->st->codec->sample_aspect_ratio.num ?
2126                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2127                 }
2128                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2129                 break;
2130             case AVMEDIA_TYPE_SUBTITLE:
2131                 codec->width  = icodec->width;
2132                 codec->height = icodec->height;
2133                 break;
2134             case AVMEDIA_TYPE_DATA:
2135             case AVMEDIA_TYPE_ATTACHMENT:
2136                 break;
2137             default:
2138                 abort();
2139             }
2140         } else {
2141             if (!ost->enc)
2142                 ost->enc = avcodec_find_encoder(codec->codec_id);
2143             if (!ost->enc) {
2144                 /* should only happen when a default codec is not present. */
2145                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2146                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2147                 ret = AVERROR(EINVAL);
2148                 goto dump_format;
2149             }
2150
2151             if (ist)
2152                 ist->decoding_needed++;
2153             ost->encoding_needed = 1;
2154
2155             if (!ost->filter &&
2156                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2157                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2158                     FilterGraph *fg;
2159                     fg = init_simple_filtergraph(ist, ost);
2160                     if (configure_filtergraph(fg)) {
2161                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2162                         exit(1);
2163                     }
2164             }
2165
2166             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2167                 if (ost->filter && !ost->frame_rate.num)
2168                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2169                 if (ist && !ost->frame_rate.num)
2170                     ost->frame_rate = ist->framerate;
2171                 if (ist && !ost->frame_rate.num)
2172                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2173 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2174                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2175                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2176                     ost->frame_rate = ost->enc->supported_framerates[idx];
2177                 }
2178             }
2179
2180             switch (codec->codec_type) {
2181             case AVMEDIA_TYPE_AUDIO:
2182                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2183                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2184                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2185                 codec->channels       = av_get_channel_layout_nb_channels(codec->channel_layout);
2186                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2187                 break;
2188             case AVMEDIA_TYPE_VIDEO:
2189                 codec->time_base = av_inv_q(ost->frame_rate);
2190                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2191                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2192                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2193                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2194                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2195                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2196                 }
2197                 for (j = 0; j < ost->forced_kf_count; j++)
2198                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2199                                                          AV_TIME_BASE_Q,
2200                                                          codec->time_base);
2201
2202                 codec->width  = ost->filter->filter->inputs[0]->w;
2203                 codec->height = ost->filter->filter->inputs[0]->h;
2204                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2205                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
2206                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
2207                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2208                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2209
2210                 if (!icodec ||
2211                     codec->width   != icodec->width  ||
2212                     codec->height  != icodec->height ||
2213                     codec->pix_fmt != icodec->pix_fmt) {
2214                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2215                 }
2216
2217                 if (ost->forced_keyframes)
2218                     parse_forced_key_frames(ost->forced_keyframes, ost,
2219                                             ost->st->codec);
2220                 break;
2221             case AVMEDIA_TYPE_SUBTITLE:
2222                 codec->time_base = (AVRational){1, 1000};
2223                 if (!codec->width) {
2224                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2225                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2226                 }
2227                 break;
2228             default:
2229                 abort();
2230                 break;
2231             }
2232             /* two pass mode */
2233             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2234                 char logfilename[1024];
2235                 FILE *f;
2236
2237                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2238                          ost->logfile_prefix ? ost->logfile_prefix :
2239                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2240                          i);
2241                 if (!strcmp(ost->enc->name, "libx264")) {
2242                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2243                 } else {
2244                     if (codec->flags & CODEC_FLAG_PASS2) {
2245                         char  *logbuffer;
2246                         size_t logbuffer_size;
2247                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2248                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2249                                    logfilename);
2250                             exit(1);
2251                         }
2252                         codec->stats_in = logbuffer;
2253                     }
2254                     if (codec->flags & CODEC_FLAG_PASS1) {
2255                         f = fopen(logfilename, "wb");
2256                         if (!f) {
2257                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2258                                 logfilename, strerror(errno));
2259                             exit(1);
2260                         }
2261                         ost->logfile = f;
2262                     }
2263                 }
2264             }
2265         }
2266     }
2267
2268     /* open each encoder */
2269     for (i = 0; i < nb_output_streams; i++) {
2270         ost = output_streams[i];
2271         if (ost->encoding_needed) {
2272             AVCodec      *codec = ost->enc;
2273             AVCodecContext *dec = NULL;
2274
2275             if ((ist = get_input_stream(ost)))
2276                 dec = ist->st->codec;
2277             if (dec && dec->subtitle_header) {
2278                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2279                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2280                 if (!ost->st->codec->subtitle_header) {
2281                     ret = AVERROR(ENOMEM);
2282                     goto dump_format;
2283                 }
2284                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2285                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2286             }
2287             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2288                 av_dict_set(&ost->opts, "threads", "auto", 0);
2289             if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
2290                 if (ret == AVERROR_EXPERIMENTAL)
2291                     abort_codec_experimental(codec, 1);
2292                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2293                         ost->file_index, ost->index);
2294                 goto dump_format;
2295             }
2296             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2297                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2298                 av_buffersink_set_frame_size(ost->filter->filter,
2299                                              ost->st->codec->frame_size);
2300             assert_avoptions(ost->opts);
2301             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2302                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2303                                              " It takes bits/s as argument, not kbits/s\n");
2304             extra_size += ost->st->codec->extradata_size;
2305
2306             if (ost->st->codec->me_threshold)
2307                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
2308         }
2309     }
2310
2311     /* init input streams */
2312     for (i = 0; i < nb_input_streams; i++)
2313         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
2314             goto dump_format;
2315
2316     /* discard unused programs */
2317     for (i = 0; i < nb_input_files; i++) {
2318         InputFile *ifile = input_files[i];
2319         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2320             AVProgram *p = ifile->ctx->programs[j];
2321             int discard  = AVDISCARD_ALL;
2322
2323             for (k = 0; k < p->nb_stream_indexes; k++)
2324                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2325                     discard = AVDISCARD_DEFAULT;
2326                     break;
2327                 }
2328             p->discard = discard;
2329         }
2330     }
2331
2332     /* open files and write file headers */
2333     for (i = 0; i < nb_output_files; i++) {
2334         oc = output_files[i]->ctx;
2335         oc->interrupt_callback = int_cb;
2336         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2337             char errbuf[128];
2338             const char *errbuf_ptr = errbuf;
2339             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
2340                 errbuf_ptr = strerror(AVUNERROR(ret));
2341             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
2342             ret = AVERROR(EINVAL);
2343             goto dump_format;
2344         }
2345 //         assert_avoptions(output_files[i]->opts);
2346         if (strcmp(oc->oformat->name, "rtp")) {
2347             want_sdp = 0;
2348         }
2349     }
2350
2351  dump_format:
2352     /* dump the file output parameters - cannot be done before in case
2353        of stream copy */
2354     for (i = 0; i < nb_output_files; i++) {
2355         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2356     }
2357
2358     /* dump the stream mapping */
2359     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2360     for (i = 0; i < nb_input_streams; i++) {
2361         ist = input_streams[i];
2362
2363         for (j = 0; j < ist->nb_filters; j++) {
2364             if (ist->filters[j]->graph->graph_desc) {
2365                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2366                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2367                        ist->filters[j]->name);
2368                 if (nb_filtergraphs > 1)
2369                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2370                 av_log(NULL, AV_LOG_INFO, "\n");
2371             }
2372         }
2373     }
2374
2375     for (i = 0; i < nb_output_streams; i++) {
2376         ost = output_streams[i];
2377
2378         if (ost->attachment_filename) {
2379             /* an attached file */
2380             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2381                    ost->attachment_filename, ost->file_index, ost->index);
2382             continue;
2383         }
2384
2385         if (ost->filter && ost->filter->graph->graph_desc) {
2386             /* output from a complex graph */
2387             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2388             if (nb_filtergraphs > 1)
2389                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2390
2391             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2392                    ost->index, ost->enc ? ost->enc->name : "?");
2393             continue;
2394         }
2395
2396         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2397                input_streams[ost->source_index]->file_index,
2398                input_streams[ost->source_index]->st->index,
2399                ost->file_index,
2400                ost->index);
2401         if (ost->sync_ist != input_streams[ost->source_index])
2402             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2403                    ost->sync_ist->file_index,
2404                    ost->sync_ist->st->index);
2405         if (ost->stream_copy)
2406             av_log(NULL, AV_LOG_INFO, " (copy)");
2407         else
2408             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2409                    input_streams[ost->source_index]->dec->name : "?",
2410                    ost->enc ? ost->enc->name : "?");
2411         av_log(NULL, AV_LOG_INFO, "\n");
2412     }
2413
2414     if (ret) {
2415         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2416         return ret;
2417     }
2418
2419     if (want_sdp) {
2420         print_sdp();
2421     }
2422
2423     return 0;
2424 }
2425
2426 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2427 static int need_output(void)
2428 {
2429     int i;
2430
2431     for (i = 0; i < nb_output_streams; i++) {
2432         OutputStream *ost    = output_streams[i];
2433         OutputFile *of       = output_files[ost->file_index];
2434         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2435
2436         if (ost->finished ||
2437             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2438             continue;
2439         if (ost->frame_number >= ost->max_frames) {
2440             int j;
2441             for (j = 0; j < of->ctx->nb_streams; j++)
2442                 close_output_stream(output_streams[of->ost_index + j]);
2443             continue;
2444         }
2445
2446         return 1;
2447     }
2448
2449     return 0;
2450 }
2451
2452 /**
2453  * Select the output stream to process.
2454  *
2455  * @return  selected output stream, or NULL if none available
2456  */
2457 static OutputStream *choose_output(void)
2458 {
2459     int i;
2460     int64_t opts_min = INT64_MAX;
2461     OutputStream *ost_min = NULL;
2462
2463     for (i = 0; i < nb_output_streams; i++) {
2464         OutputStream *ost = output_streams[i];
2465         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2466                                     AV_TIME_BASE_Q);
2467         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2468             opts_min = opts;
2469             ost_min  = ost;
2470         }
2471     }
2472     return ost_min;
2473 }
2474
2475 static int check_keyboard_interaction(int64_t cur_time)
2476 {
2477     int i, ret, key;
2478     static int64_t last_time;
2479     if (received_nb_signals)
2480         return AVERROR_EXIT;
2481     /* read_key() returns 0 on EOF */
2482     if(cur_time - last_time >= 100000 && !run_as_daemon){
2483         key =  read_key();
2484         last_time = cur_time;
2485     }else
2486         key = -1;
2487     if (key == 'q')
2488         return AVERROR_EXIT;
2489     if (key == '+') av_log_set_level(av_log_get_level()+10);
2490     if (key == '-') av_log_set_level(av_log_get_level()-10);
2491     if (key == 's') qp_hist     ^= 1;
2492     if (key == 'h'){
2493         if (do_hex_dump){
2494             do_hex_dump = do_pkt_dump = 0;
2495         } else if(do_pkt_dump){
2496             do_hex_dump = 1;
2497         } else
2498             do_pkt_dump = 1;
2499         av_log_set_level(AV_LOG_DEBUG);
2500     }
2501     if (key == 'c' || key == 'C'){
2502         char buf[4096], target[64], command[256], arg[256] = {0};
2503         double time;
2504         int k, n = 0;
2505         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2506         i = 0;
2507         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2508             if (k > 0)
2509                 buf[i++] = k;
2510         buf[i] = 0;
2511         if (k > 0 &&
2512             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2513             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2514                    target, time, command, arg);
2515             for (i = 0; i < nb_filtergraphs; i++) {
2516                 FilterGraph *fg = filtergraphs[i];
2517                 if (fg->graph) {
2518                     if (time < 0) {
2519                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2520                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2521                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2522                     } else {
2523                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2524                     }
2525                 }
2526             }
2527         } else {
2528             av_log(NULL, AV_LOG_ERROR,
2529                    "Parse error, at least 3 arguments were expected, "
2530                    "only %d given in string '%s'\n", n, buf);
2531         }
2532     }
2533     if (key == 'd' || key == 'D'){
2534         int debug=0;
2535         if(key == 'D') {
2536             debug = input_streams[0]->st->codec->debug<<1;
2537             if(!debug) debug = 1;
2538             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2539                 debug += debug;
2540         }else
2541             if(scanf("%d", &debug)!=1)
2542                 fprintf(stderr,"error parsing debug value\n");
2543         for(i=0;i<nb_input_streams;i++) {
2544             input_streams[i]->st->codec->debug = debug;
2545         }
2546         for(i=0;i<nb_output_streams;i++) {
2547             OutputStream *ost = output_streams[i];
2548             ost->st->codec->debug = debug;
2549         }
2550         if(debug) av_log_set_level(AV_LOG_DEBUG);
2551         fprintf(stderr,"debug=%d\n", debug);
2552     }
2553     if (key == '?'){
2554         fprintf(stderr, "key    function\n"
2555                         "?      show this help\n"
2556                         "+      increase verbosity\n"
2557                         "-      decrease verbosity\n"
2558                         "c      Send command to filtergraph\n"
2559                         "D      cycle through available debug modes\n"
2560                         "h      dump packets/hex press to cycle through the 3 states\n"
2561                         "q      quit\n"
2562                         "s      Show QP histogram\n"
2563         );
2564     }
2565     return 0;
2566 }
2567
2568 #if HAVE_PTHREADS
2569 static void *input_thread(void *arg)
2570 {
2571     InputFile *f = arg;
2572     int ret = 0;
2573
2574     while (!transcoding_finished && ret >= 0) {
2575         AVPacket pkt;
2576         ret = av_read_frame(f->ctx, &pkt);
2577
2578         if (ret == AVERROR(EAGAIN)) {
2579             av_usleep(10000);
2580             ret = 0;
2581             continue;
2582         } else if (ret < 0)
2583             break;
2584
2585         pthread_mutex_lock(&f->fifo_lock);
2586         while (!av_fifo_space(f->fifo))
2587             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2588
2589         av_dup_packet(&pkt);
2590         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2591
2592         pthread_mutex_unlock(&f->fifo_lock);
2593     }
2594
2595     f->finished = 1;
2596     return NULL;
2597 }
2598
2599 static void free_input_threads(void)
2600 {
2601     int i;
2602
2603     if (nb_input_files == 1)
2604         return;
2605
2606     transcoding_finished = 1;
2607
2608     for (i = 0; i < nb_input_files; i++) {
2609         InputFile *f = input_files[i];
2610         AVPacket pkt;
2611
2612         if (!f->fifo || f->joined)
2613             continue;
2614
2615         pthread_mutex_lock(&f->fifo_lock);
2616         while (av_fifo_size(f->fifo)) {
2617             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2618             av_free_packet(&pkt);
2619         }
2620         pthread_cond_signal(&f->fifo_cond);
2621         pthread_mutex_unlock(&f->fifo_lock);
2622
2623         pthread_join(f->thread, NULL);
2624         f->joined = 1;
2625
2626         while (av_fifo_size(f->fifo)) {
2627             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2628             av_free_packet(&pkt);
2629         }
2630         av_fifo_free(f->fifo);
2631     }
2632 }
2633
2634 static int init_input_threads(void)
2635 {
2636     int i, ret;
2637
2638     if (nb_input_files == 1)
2639         return 0;
2640
2641     for (i = 0; i < nb_input_files; i++) {
2642         InputFile *f = input_files[i];
2643
2644         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2645             return AVERROR(ENOMEM);
2646
2647         pthread_mutex_init(&f->fifo_lock, NULL);
2648         pthread_cond_init (&f->fifo_cond, NULL);
2649
2650         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2651             return AVERROR(ret);
2652     }
2653     return 0;
2654 }
2655
2656 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2657 {
2658     int ret = 0;
2659
2660     pthread_mutex_lock(&f->fifo_lock);
2661
2662     if (av_fifo_size(f->fifo)) {
2663         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2664         pthread_cond_signal(&f->fifo_cond);
2665     } else {
2666         if (f->finished)
2667             ret = AVERROR_EOF;
2668         else
2669             ret = AVERROR(EAGAIN);
2670     }
2671
2672     pthread_mutex_unlock(&f->fifo_lock);
2673
2674     return ret;
2675 }
2676 #endif
2677
2678 static int get_input_packet(InputFile *f, AVPacket *pkt)
2679 {
2680 #if HAVE_PTHREADS
2681     if (nb_input_files > 1)
2682         return get_input_packet_mt(f, pkt);
2683 #endif
2684     return av_read_frame(f->ctx, pkt);
2685 }
2686
2687 static int got_eagain(void)
2688 {
2689     int i;
2690     for (i = 0; i < nb_output_streams; i++)
2691         if (output_streams[i]->unavailable)
2692             return 1;
2693     return 0;
2694 }
2695
2696 static void reset_eagain(void)
2697 {
2698     int i;
2699     for (i = 0; i < nb_input_files; i++)
2700         input_files[i]->eagain = 0;
2701     for (i = 0; i < nb_output_streams; i++)
2702         output_streams[i]->unavailable = 0;
2703 }
2704
2705 /*
2706  * Return
2707  * - 0 -- one packet was read and processed
2708  * - AVERROR(EAGAIN) -- no packets were available for selected file,
2709  *   this function should be called again
2710  * - AVERROR_EOF -- this function should not be called again
2711  */
2712 static int process_input(int file_index)
2713 {
2714     InputFile *ifile = input_files[file_index];
2715     AVFormatContext *is;
2716     InputStream *ist;
2717     AVPacket pkt;
2718     int ret, i, j;
2719
2720     is  = ifile->ctx;
2721     ret = get_input_packet(ifile, &pkt);
2722
2723     if (ret == AVERROR(EAGAIN)) {
2724         ifile->eagain = 1;
2725         return ret;
2726     }
2727     if (ret < 0) {
2728         if (ret != AVERROR_EOF) {
2729             print_error(is->filename, ret);
2730             if (exit_on_error)
2731                 exit(1);
2732         }
2733         ifile->eof_reached = 1;
2734
2735         for (i = 0; i < ifile->nb_streams; i++) {
2736             ist = input_streams[ifile->ist_index + i];
2737             if (ist->decoding_needed)
2738                 output_packet(ist, NULL);
2739
2740             /* mark all outputs that don't go through lavfi as finished */
2741             for (j = 0; j < nb_output_streams; j++) {
2742                 OutputStream *ost = output_streams[j];
2743
2744                 if (ost->source_index == ifile->ist_index + i &&
2745                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2746                     close_output_stream(ost);
2747             }
2748         }
2749
2750         return AVERROR(EAGAIN);
2751     }
2752
2753     reset_eagain();
2754
2755     if (do_pkt_dump) {
2756         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2757                          is->streams[pkt.stream_index]);
2758     }
2759     /* the following test is needed in case new streams appear
2760        dynamically in stream : we ignore them */
2761     if (pkt.stream_index >= ifile->nb_streams) {
2762         report_new_stream(file_index, &pkt);
2763         goto discard_packet;
2764     }
2765
2766     ist = input_streams[ifile->ist_index + pkt.stream_index];
2767     if (ist->discard)
2768         goto discard_packet;
2769
2770     if (debug_ts) {
2771         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
2772                "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:%s off_time:%s\n",
2773                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2774                av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
2775                av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
2776                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2777                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2778                av_ts2str(input_files[ist->file_index]->ts_offset),
2779                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
2780     }
2781
2782     if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
2783         int64_t stime, stime2;
2784         // Correcting starttime based on the enabled streams
2785         // FIXME this ideally should be done before the first use of starttime but we do not know which are the enabled streams at that point.
2786         //       so we instead do it here as part of discontinuity handling
2787         if (   ist->next_dts == AV_NOPTS_VALUE
2788             && ifile->ts_offset == -is->start_time
2789             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2790             int64_t new_start_time = INT64_MAX;
2791             for (i=0; i<is->nb_streams; i++) {
2792                 AVStream *st = is->streams[i];
2793                 if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
2794                     continue;
2795                 new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
2796             }
2797             if (new_start_time > is->start_time) {
2798                 av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
2799                 ifile->ts_offset = -new_start_time;
2800             }
2801         }
2802
2803         stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
2804         stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
2805         ist->wrap_correction_done = 1;
2806
2807         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2808             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
2809             ist->wrap_correction_done = 0;
2810         }
2811         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2812             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
2813             ist->wrap_correction_done = 0;
2814         }
2815     }
2816
2817     if (pkt.dts != AV_NOPTS_VALUE)
2818         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2819     if (pkt.pts != AV_NOPTS_VALUE)
2820         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2821
2822     if (pkt.pts != AV_NOPTS_VALUE)
2823         pkt.pts *= ist->ts_scale;
2824     if (pkt.dts != AV_NOPTS_VALUE)
2825         pkt.dts *= ist->ts_scale;
2826
2827     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2828         !copy_ts) {
2829         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2830         int64_t delta   = pkt_dts - ist->next_dts;
2831         if (is->iformat->flags & AVFMT_TS_DISCONT) {
2832         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2833             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2834                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2835             pkt_dts+1<ist->pts){
2836             ifile->ts_offset -= delta;
2837             av_log(NULL, AV_LOG_DEBUG,
2838                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2839                    delta, ifile->ts_offset);
2840             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2841             if (pkt.pts != AV_NOPTS_VALUE)
2842                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2843         }
2844         } else {
2845             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2846                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2847                ) {
2848                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
2849                 pkt.dts = AV_NOPTS_VALUE;
2850             }
2851             if (pkt.pts != AV_NOPTS_VALUE){
2852                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
2853                 delta   = pkt_pts - ist->next_dts;
2854                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2855                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2856                    ) {
2857                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
2858                     pkt.pts = AV_NOPTS_VALUE;
2859                 }
2860             }
2861         }
2862     }
2863
2864     if (debug_ts) {
2865         av_log(NULL, AV_LOG_INFO, "demuxer+ffmpeg -> ist_index:%d type:%s pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%s off_time:%s\n",
2866                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2867                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2868                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2869                av_ts2str(input_files[ist->file_index]->ts_offset),
2870                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
2871     }
2872
2873     sub2video_heartbeat(ist, pkt.pts);
2874
2875     ret = output_packet(ist, &pkt);
2876     if (ret < 0) {
2877         char buf[128];
2878         av_strerror(ret, buf, sizeof(buf));
2879         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
2880                 ist->file_index, ist->st->index, buf);
2881         if (exit_on_error)
2882             exit(1);
2883     }
2884
2885 discard_packet:
2886     av_free_packet(&pkt);
2887
2888     return 0;
2889 }
2890
2891 /**
2892  * Perform a step of transcoding for the specified filter graph.
2893  *
2894  * @param[in]  graph     filter graph to consider
2895  * @param[out] best_ist  input stream where a frame would allow to continue
2896  * @return  0 for success, <0 for error
2897  */
2898 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
2899 {
2900     int i, ret;
2901     int nb_requests, nb_requests_max = 0;
2902     InputFilter *ifilter;
2903     InputStream *ist;
2904
2905     *best_ist = NULL;
2906     ret = avfilter_graph_request_oldest(graph->graph);
2907     if (ret >= 0)
2908         return reap_filters();
2909
2910     if (ret == AVERROR_EOF) {
2911         ret = reap_filters();
2912         for (i = 0; i < graph->nb_outputs; i++)
2913             close_output_stream(graph->outputs[i]->ost);
2914         return ret;
2915     }
2916     if (ret != AVERROR(EAGAIN))
2917         return ret;
2918
2919     for (i = 0; i < graph->nb_inputs; i++) {
2920         ifilter = graph->inputs[i];
2921         ist = ifilter->ist;
2922         if (input_files[ist->file_index]->eagain ||
2923             input_files[ist->file_index]->eof_reached)
2924             continue;
2925         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
2926         if (nb_requests > nb_requests_max) {
2927             nb_requests_max = nb_requests;
2928             *best_ist = ist;
2929         }
2930     }
2931
2932     if (!*best_ist)
2933         for (i = 0; i < graph->nb_outputs; i++)
2934             graph->outputs[i]->ost->unavailable = 1;
2935
2936     return 0;
2937 }
2938
2939 /**
2940  * Run a single step of transcoding.
2941  *
2942  * @return  0 for success, <0 for error
2943  */
2944 static int transcode_step(void)
2945 {
2946     OutputStream *ost;
2947     InputStream  *ist;
2948     int ret;
2949
2950     ost = choose_output();
2951     if (!ost) {
2952         if (got_eagain()) {
2953             reset_eagain();
2954             av_usleep(10000);
2955             return 0;
2956         }
2957         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
2958         return AVERROR_EOF;
2959     }
2960
2961     if (ost->filter) {
2962         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
2963             return ret;
2964         if (!ist)
2965             return 0;
2966     } else {
2967         av_assert0(ost->source_index >= 0);
2968         ist = input_streams[ost->source_index];
2969     }
2970
2971     ret = process_input(ist->file_index);
2972     if (ret == AVERROR(EAGAIN)) {
2973         if (input_files[ist->file_index]->eagain)
2974             ost->unavailable = 1;
2975         return 0;
2976     }
2977     if (ret < 0)
2978         return ret == AVERROR_EOF ? 0 : ret;
2979
2980     return reap_filters();
2981 }
2982
2983 /*
2984  * The following code is the main loop of the file converter
2985  */
2986 static int transcode(void)
2987 {
2988     int ret, i;
2989     AVFormatContext *os;
2990     OutputStream *ost;
2991     InputStream *ist;
2992     int64_t timer_start;
2993
2994     ret = transcode_init();
2995     if (ret < 0)
2996         goto fail;
2997
2998     if (stdin_interaction) {
2999         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3000     }
3001
3002     timer_start = av_gettime();
3003
3004 #if HAVE_PTHREADS
3005     if ((ret = init_input_threads()) < 0)
3006         goto fail;
3007 #endif
3008
3009     while (!received_sigterm) {
3010         int64_t cur_time= av_gettime();
3011
3012         /* if 'q' pressed, exits */
3013         if (stdin_interaction)
3014             if (check_keyboard_interaction(cur_time) < 0)
3015                 break;
3016
3017         /* check if there's any stream where output is still needed */
3018         if (!need_output()) {
3019             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3020             break;
3021         }
3022
3023         ret = transcode_step();
3024         if (ret < 0) {
3025             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
3026                 continue;
3027
3028             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
3029             break;
3030         }
3031
3032         /* dump report by using the output first video and audio streams */
3033         print_report(0, timer_start, cur_time);
3034     }
3035 #if HAVE_PTHREADS
3036     free_input_threads();
3037 #endif
3038
3039     /* at the end of stream, we must flush the decoder buffers */
3040     for (i = 0; i < nb_input_streams; i++) {
3041         ist = input_streams[i];
3042         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3043             output_packet(ist, NULL);
3044         }
3045     }
3046     flush_encoders();
3047
3048     term_exit();
3049
3050     /* write the trailer if needed and close file */
3051     for (i = 0; i < nb_output_files; i++) {
3052         os = output_files[i]->ctx;
3053         av_write_trailer(os);
3054     }
3055
3056     /* dump report by using the first video and audio streams */
3057     print_report(1, timer_start, av_gettime());
3058
3059     /* close each encoder */
3060     for (i = 0; i < nb_output_streams; i++) {
3061         ost = output_streams[i];
3062         if (ost->encoding_needed) {
3063             av_freep(&ost->st->codec->stats_in);
3064             avcodec_close(ost->st->codec);
3065         }
3066     }
3067
3068     /* close each decoder */
3069     for (i = 0; i < nb_input_streams; i++) {
3070         ist = input_streams[i];
3071         if (ist->decoding_needed) {
3072             avcodec_close(ist->st->codec);
3073         }
3074     }
3075
3076     /* finished ! */
3077     ret = 0;
3078
3079  fail:
3080 #if HAVE_PTHREADS
3081     free_input_threads();
3082 #endif
3083
3084     if (output_streams) {
3085         for (i = 0; i < nb_output_streams; i++) {
3086             ost = output_streams[i];
3087             if (ost) {
3088                 if (ost->stream_copy)
3089                     av_freep(&ost->st->codec->extradata);
3090                 if (ost->logfile) {
3091                     fclose(ost->logfile);
3092                     ost->logfile = NULL;
3093                 }
3094                 av_freep(&ost->st->codec->subtitle_header);
3095                 av_free(ost->forced_kf_pts);
3096                 av_dict_free(&ost->opts);
3097             }
3098         }
3099     }
3100     return ret;
3101 }
3102
3103
3104 static int64_t getutime(void)
3105 {
3106 #if HAVE_GETRUSAGE
3107     struct rusage rusage;
3108
3109     getrusage(RUSAGE_SELF, &rusage);
3110     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3111 #elif HAVE_GETPROCESSTIMES
3112     HANDLE proc;
3113     FILETIME c, e, k, u;
3114     proc = GetCurrentProcess();
3115     GetProcessTimes(proc, &c, &e, &k, &u);
3116     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3117 #else
3118     return av_gettime();
3119 #endif
3120 }
3121
3122 static int64_t getmaxrss(void)
3123 {
3124 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3125     struct rusage rusage;
3126     getrusage(RUSAGE_SELF, &rusage);
3127     return (int64_t)rusage.ru_maxrss * 1024;
3128 #elif HAVE_GETPROCESSMEMORYINFO
3129     HANDLE proc;
3130     PROCESS_MEMORY_COUNTERS memcounters;
3131     proc = GetCurrentProcess();
3132     memcounters.cb = sizeof(memcounters);
3133     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3134     return memcounters.PeakPagefileUsage;
3135 #else
3136     return 0;
3137 #endif
3138 }
3139
3140 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3141 {
3142 }
3143
3144 static void parse_cpuflags(int argc, char **argv, const OptionDef *options)
3145 {
3146     int idx = locate_option(argc, argv, options, "cpuflags");
3147     if (idx && argv[idx + 1])
3148         opt_cpuflags(NULL, "cpuflags", argv[idx + 1]);
3149 }
3150
3151 int main(int argc, char **argv)
3152 {
3153     OptionsContext o = { 0 };
3154     int64_t ti;
3155
3156     atexit(exit_program);
3157
3158     reset_options(&o, 0);
3159
3160     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3161
3162     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3163     parse_loglevel(argc, argv, options);
3164
3165     if(argc>1 && !strcmp(argv[1], "-d")){
3166         run_as_daemon=1;
3167         av_log_set_callback(log_callback_null);
3168         argc--;
3169         argv++;
3170     }
3171
3172     avcodec_register_all();
3173 #if CONFIG_AVDEVICE
3174     avdevice_register_all();
3175 #endif
3176     avfilter_register_all();
3177     av_register_all();
3178     avformat_network_init();
3179
3180     show_banner(argc, argv, options);
3181
3182     term_init();
3183
3184     parse_cpuflags(argc, argv, options);
3185
3186     /* parse options */
3187     parse_options(&o, argc, argv, options, opt_output_file);
3188
3189     if (nb_output_files <= 0 && nb_input_files == 0) {
3190         show_usage();
3191         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3192         exit(1);
3193     }
3194
3195     /* file converter / grab */
3196     if (nb_output_files <= 0) {
3197         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3198         exit(1);
3199     }
3200
3201 //     if (nb_input_files == 0) {
3202 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3203 //         exit(1);
3204 //     }
3205
3206     current_time = ti = getutime();
3207     if (transcode() < 0)
3208         exit(1);
3209     ti = getutime() - ti;
3210     if (do_benchmark) {
3211         int maxrss = getmaxrss() / 1024;
3212         printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss);
3213     }
3214
3215     exit(0);
3216     return 0;
3217 }