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