ffmpeg: use AV_BUFFERSRC_FLAG_PUSH.
[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                              AV_BUFFERSRC_FLAG_PUSH);
198 }
199
200 static void sub2video_update(InputStream *ist, AVSubtitle *sub, int64_t pts)
201 {
202     int w = ist->sub2video.w, h = ist->sub2video.h;
203     AVFilterBufferRef *ref = ist->sub2video.ref;
204     int8_t *dst;
205     int     dst_linesize;
206     int i;
207
208     if (!ref)
209         return;
210     dst          = ref->data    [0];
211     dst_linesize = ref->linesize[0];
212     memset(dst, 0, h * dst_linesize);
213     for (i = 0; i < sub->num_rects; i++)
214         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
215     sub2video_push_ref(ist, pts);
216 }
217
218 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
219 {
220     InputFile *infile = input_files[ist->file_index];
221     int i, j, nb_reqs;
222     int64_t pts2;
223
224     /* When a frame is read from a file, examine all sub2video streams in
225        the same file and send the sub2video frame again. Otherwise, decoded
226        video frames could be accumulating in the filter graph while a filter
227        (possibly overlay) is desperately waiting for a subtitle frame. */
228     for (i = 0; i < infile->nb_streams; i++) {
229         InputStream *ist2 = input_streams[infile->ist_index + i];
230         if (!ist2->sub2video.ref)
231             continue;
232         /* subtitles seem to be usually muxed ahead of other streams;
233            if not, substracting a larger time here is necessary */
234         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
235         /* do not send the heartbeat frame if the subtitle is already ahead */
236         if (pts2 <= ist2->sub2video.last_pts)
237             continue;
238         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
239             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
240         if (nb_reqs)
241             sub2video_push_ref(ist2, pts2);
242     }
243 }
244
245 static void sub2video_flush(InputStream *ist)
246 {
247     int i;
248
249     for (i = 0; i < ist->nb_filters; i++)
250         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
251 }
252
253 /* end of sub2video hack */
254
255 void term_exit(void)
256 {
257     av_log(NULL, AV_LOG_QUIET, "%s", "");
258 #if HAVE_TERMIOS_H
259     if(restore_tty)
260         tcsetattr (0, TCSANOW, &oldtty);
261 #endif
262 }
263
264 static volatile int received_sigterm = 0;
265 static volatile int received_nb_signals = 0;
266
267 static void
268 sigterm_handler(int sig)
269 {
270     received_sigterm = sig;
271     received_nb_signals++;
272     term_exit();
273     if(received_nb_signals > 3)
274         exit(123);
275 }
276
277 void term_init(void)
278 {
279 #if HAVE_TERMIOS_H
280     if(!run_as_daemon){
281         struct termios tty;
282         int istty = 1;
283 #if HAVE_ISATTY
284         istty = isatty(0) && isatty(2);
285 #endif
286         if (istty && tcgetattr (0, &tty) == 0) {
287             oldtty = tty;
288             restore_tty = 1;
289             atexit(term_exit);
290
291             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
292                              |INLCR|IGNCR|ICRNL|IXON);
293             tty.c_oflag |= OPOST;
294             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
295             tty.c_cflag &= ~(CSIZE|PARENB);
296             tty.c_cflag |= CS8;
297             tty.c_cc[VMIN] = 1;
298             tty.c_cc[VTIME] = 0;
299
300             tcsetattr (0, TCSANOW, &tty);
301         }
302         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
303     }
304 #endif
305     avformat_network_deinit();
306
307     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
308     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
309 #ifdef SIGXCPU
310     signal(SIGXCPU, sigterm_handler);
311 #endif
312 }
313
314 /* read a key without blocking */
315 static int read_key(void)
316 {
317     unsigned char ch;
318 #if HAVE_TERMIOS_H
319     int n = 1;
320     struct timeval tv;
321     fd_set rfds;
322
323     FD_ZERO(&rfds);
324     FD_SET(0, &rfds);
325     tv.tv_sec = 0;
326     tv.tv_usec = 0;
327     n = select(1, &rfds, NULL, NULL, &tv);
328     if (n > 0) {
329         n = read(0, &ch, 1);
330         if (n == 1)
331             return ch;
332
333         return n;
334     }
335 #elif HAVE_KBHIT
336 #    if HAVE_PEEKNAMEDPIPE
337     static int is_pipe;
338     static HANDLE input_handle;
339     DWORD dw, nchars;
340     if(!input_handle){
341         input_handle = GetStdHandle(STD_INPUT_HANDLE);
342         is_pipe = !GetConsoleMode(input_handle, &dw);
343     }
344
345     if (stdin->_cnt > 0) {
346         read(0, &ch, 1);
347         return ch;
348     }
349     if (is_pipe) {
350         /* When running under a GUI, you will end here. */
351         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
352             return -1;
353         //Read it
354         if(nchars != 0) {
355             read(0, &ch, 1);
356             return ch;
357         }else{
358             return -1;
359         }
360     }
361 #    endif
362     if(kbhit())
363         return(getch());
364 #endif
365     return -1;
366 }
367
368 static int decode_interrupt_cb(void *ctx)
369 {
370     return received_nb_signals > 1;
371 }
372
373 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
374
375 void av_noreturn exit_program(int ret)
376 {
377     int i, j;
378
379     for (i = 0; i < nb_filtergraphs; i++) {
380         avfilter_graph_free(&filtergraphs[i]->graph);
381         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
382             av_freep(&filtergraphs[i]->inputs[j]->name);
383             av_freep(&filtergraphs[i]->inputs[j]);
384         }
385         av_freep(&filtergraphs[i]->inputs);
386         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
387             av_freep(&filtergraphs[i]->outputs[j]->name);
388             av_freep(&filtergraphs[i]->outputs[j]);
389         }
390         av_freep(&filtergraphs[i]->outputs);
391         av_freep(&filtergraphs[i]);
392     }
393     av_freep(&filtergraphs);
394
395     av_freep(&subtitle_out);
396
397     /* close files */
398     for (i = 0; i < nb_output_files; i++) {
399         AVFormatContext *s = output_files[i]->ctx;
400         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
401             avio_close(s->pb);
402         avformat_free_context(s);
403         av_dict_free(&output_files[i]->opts);
404         av_freep(&output_files[i]);
405     }
406     for (i = 0; i < nb_output_streams; i++) {
407         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
408         while (bsfc) {
409             AVBitStreamFilterContext *next = bsfc->next;
410             av_bitstream_filter_close(bsfc);
411             bsfc = next;
412         }
413         output_streams[i]->bitstream_filters = NULL;
414
415         av_freep(&output_streams[i]->forced_keyframes);
416         av_freep(&output_streams[i]->avfilter);
417         av_freep(&output_streams[i]->filtered_frame);
418         av_freep(&output_streams[i]);
419     }
420     for (i = 0; i < nb_input_files; i++) {
421         avformat_close_input(&input_files[i]->ctx);
422         av_freep(&input_files[i]);
423     }
424     for (i = 0; i < nb_input_streams; i++) {
425         av_freep(&input_streams[i]->decoded_frame);
426         av_dict_free(&input_streams[i]->opts);
427         free_buffer_pool(&input_streams[i]->buffer_pool);
428         avfilter_unref_bufferp(&input_streams[i]->sub2video.ref);
429         av_freep(&input_streams[i]->filters);
430         av_freep(&input_streams[i]);
431     }
432
433     if (vstats_file)
434         fclose(vstats_file);
435     av_free(vstats_filename);
436
437     av_freep(&input_streams);
438     av_freep(&input_files);
439     av_freep(&output_streams);
440     av_freep(&output_files);
441
442     uninit_opts();
443
444     avfilter_uninit();
445     avformat_network_deinit();
446
447     if (received_sigterm) {
448         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
449                (int) received_sigterm);
450         exit (255);
451     }
452
453     exit(ret);
454 }
455
456 void assert_avoptions(AVDictionary *m)
457 {
458     AVDictionaryEntry *t;
459     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
460         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
461         exit_program(1);
462     }
463 }
464
465 static void assert_codec_experimental(AVCodecContext *c, int encoder)
466 {
467     const char *codec_string = encoder ? "encoder" : "decoder";
468     AVCodec *codec;
469     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
470         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
471         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
472                 "results.\nAdd '-strict experimental' if you want to use it.\n",
473                 codec_string, c->codec->name);
474         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
475         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
476             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
477                    codec_string, codec->name);
478         exit_program(1);
479     }
480 }
481
482 static void update_benchmark(const char *fmt, ...)
483 {
484     if (do_benchmark_all) {
485         int64_t t = getutime();
486         va_list va;
487         char buf[1024];
488
489         if (fmt) {
490             va_start(va, fmt);
491             vsnprintf(buf, sizeof(buf), fmt, va);
492             va_end(va);
493             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
494         }
495         current_time = t;
496     }
497 }
498
499 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
500 {
501     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
502     AVCodecContext          *avctx = ost->st->codec;
503     int ret;
504
505     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
506         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
507         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
508
509     if ((avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) && pkt->dts != AV_NOPTS_VALUE) {
510         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
511         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
512             av_log(s, max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG,
513                    "st:%d PTS: %"PRId64" DTS: %"PRId64" < %"PRId64" invalid, clipping\n", pkt->stream_index, pkt->pts, pkt->dts, max);
514             if(pkt->pts >= pkt->dts)
515                 pkt->pts = FFMAX(pkt->pts, max);
516             pkt->dts = max;
517         }
518     }
519
520     /*
521      * Audio encoders may split the packets --  #frames in != #packets out.
522      * But there is no reordering, so we can limit the number of output packets
523      * by simply dropping them here.
524      * Counting encoded video frames needs to be done separately because of
525      * reordering, see do_video_out()
526      */
527     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
528         if (ost->frame_number >= ost->max_frames) {
529             av_free_packet(pkt);
530             return;
531         }
532         ost->frame_number++;
533     }
534
535     while (bsfc) {
536         AVPacket new_pkt = *pkt;
537         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
538                                            &new_pkt.data, &new_pkt.size,
539                                            pkt->data, pkt->size,
540                                            pkt->flags & AV_PKT_FLAG_KEY);
541         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
542             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
543             if(t) {
544                 memcpy(t, new_pkt.data, new_pkt.size);
545                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
546                 new_pkt.data = t;
547                 a = 1;
548             } else
549                 a = AVERROR(ENOMEM);
550         }
551         if (a > 0) {
552             av_free_packet(pkt);
553             new_pkt.destruct = av_destruct_packet;
554         } else if (a < 0) {
555             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
556                    bsfc->filter->name, pkt->stream_index,
557                    avctx->codec ? avctx->codec->name : "copy");
558             print_error("", a);
559             if (exit_on_error)
560                 exit_program(1);
561         }
562         *pkt = new_pkt;
563
564         bsfc = bsfc->next;
565     }
566
567     pkt->stream_index = ost->index;
568     ret = av_interleaved_write_frame(s, pkt);
569     if (ret < 0) {
570         print_error("av_interleaved_write_frame()", ret);
571         exit_program(1);
572     }
573 }
574
575 static int check_recording_time(OutputStream *ost)
576 {
577     OutputFile *of = output_files[ost->file_index];
578
579     if (of->recording_time != INT64_MAX &&
580         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
581                       AV_TIME_BASE_Q) >= 0) {
582         ost->finished = 1;
583         return 0;
584     }
585     return 1;
586 }
587
588 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
589                          AVFrame *frame)
590 {
591     AVCodecContext *enc = ost->st->codec;
592     AVPacket pkt;
593     int got_packet = 0;
594
595     av_init_packet(&pkt);
596     pkt.data = NULL;
597     pkt.size = 0;
598
599     if (!check_recording_time(ost))
600         return;
601
602     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
603         frame->pts = ost->sync_opts;
604     ost->sync_opts = frame->pts + frame->nb_samples;
605
606     av_assert0(pkt.size || !pkt.data);
607     update_benchmark(NULL);
608     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
609         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
610         exit_program(1);
611     }
612     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
613
614     if (got_packet) {
615         if (pkt.pts != AV_NOPTS_VALUE)
616             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
617         if (pkt.dts != AV_NOPTS_VALUE)
618             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
619         if (pkt.duration > 0)
620             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
621
622         if (debug_ts) {
623             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
624                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
625                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
626                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
627         }
628
629         write_frame(s, &pkt, ost);
630
631         audio_size += pkt.size;
632         av_free_packet(&pkt);
633     }
634 }
635
636 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
637 {
638     AVCodecContext *dec;
639     AVPicture *picture2;
640     AVPicture picture_tmp;
641     uint8_t *buf = 0;
642
643     dec = ist->st->codec;
644
645     /* deinterlace : must be done before any resize */
646     if (do_deinterlace) {
647         int size;
648
649         /* create temporary picture */
650         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
651         buf  = av_malloc(size);
652         if (!buf)
653             return;
654
655         picture2 = &picture_tmp;
656         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
657
658         if (avpicture_deinterlace(picture2, picture,
659                                  dec->pix_fmt, dec->width, dec->height) < 0) {
660             /* if error, do not deinterlace */
661             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
662             av_free(buf);
663             buf = NULL;
664             picture2 = picture;
665         }
666     } else {
667         picture2 = picture;
668     }
669
670     if (picture != picture2)
671         *picture = *picture2;
672     *bufp = buf;
673 }
674
675 static void do_subtitle_out(AVFormatContext *s,
676                             OutputStream *ost,
677                             InputStream *ist,
678                             AVSubtitle *sub,
679                             int64_t pts)
680 {
681     int subtitle_out_max_size = 1024 * 1024;
682     int subtitle_out_size, nb, i;
683     AVCodecContext *enc;
684     AVPacket pkt;
685
686     if (pts == AV_NOPTS_VALUE) {
687         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
688         if (exit_on_error)
689             exit_program(1);
690         return;
691     }
692
693     enc = ost->st->codec;
694
695     if (!subtitle_out) {
696         subtitle_out = av_malloc(subtitle_out_max_size);
697     }
698
699     /* Note: DVB subtitle need one packet to draw them and one other
700        packet to clear them */
701     /* XXX: signal it in the codec context ? */
702     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
703         nb = 2;
704     else
705         nb = 1;
706
707     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
708     pts = av_rescale_q(pts, ist->st->time_base, AV_TIME_BASE_Q)
709         - output_files[ost->file_index]->start_time;
710     for (i = 0; i < nb; i++) {
711         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
712         if (!check_recording_time(ost))
713             return;
714
715         sub->pts = pts;
716         // start_display_time is required to be 0
717         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
718         sub->end_display_time  -= sub->start_display_time;
719         sub->start_display_time = 0;
720         if (i == 1)
721             sub->num_rects = 0;
722         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
723                                                     subtitle_out_max_size, sub);
724         if (subtitle_out_size < 0) {
725             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
726             exit_program(1);
727         }
728
729         av_init_packet(&pkt);
730         pkt.data = subtitle_out;
731         pkt.size = subtitle_out_size;
732         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
733         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
734         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
735             /* XXX: the pts correction is handled here. Maybe handling
736                it in the codec would be better */
737             if (i == 0)
738                 pkt.pts += 90 * sub->start_display_time;
739             else
740                 pkt.pts += 90 * sub->end_display_time;
741         }
742         write_frame(s, &pkt, ost);
743         subtitle_size += pkt.size;
744     }
745 }
746
747 static void do_video_out(AVFormatContext *s,
748                          OutputStream *ost,
749                          AVFrame *in_picture,
750                          float quality)
751 {
752     int ret, format_video_sync;
753     AVPacket pkt;
754     AVCodecContext *enc = ost->st->codec;
755     int nb_frames, i;
756     double sync_ipts, delta;
757     double duration = 0;
758     int frame_size = 0;
759     InputStream *ist = NULL;
760
761     if (ost->source_index >= 0)
762         ist = input_streams[ost->source_index];
763
764     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
765         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
766
767     sync_ipts = in_picture->pts;
768     delta = sync_ipts - ost->sync_opts + duration;
769
770     /* by default, we output a single frame */
771     nb_frames = 1;
772
773     format_video_sync = video_sync_method;
774     if (format_video_sync == VSYNC_AUTO)
775         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
776
777     switch (format_video_sync) {
778     case VSYNC_CFR:
779         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
780         if (delta < -1.1)
781             nb_frames = 0;
782         else if (delta > 1.1)
783             nb_frames = lrintf(delta);
784         break;
785     case VSYNC_VFR:
786         if (delta <= -0.6)
787             nb_frames = 0;
788         else if (delta > 0.6)
789             ost->sync_opts = lrint(sync_ipts);
790         break;
791     case VSYNC_DROP:
792     case VSYNC_PASSTHROUGH:
793         ost->sync_opts = lrint(sync_ipts);
794         break;
795     default:
796         av_assert0(0);
797     }
798
799     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
800     if (nb_frames == 0) {
801         nb_frames_drop++;
802         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
803         return;
804     } else if (nb_frames > 1) {
805         if (nb_frames > dts_error_threshold * 30) {
806             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skiping\n", nb_frames - 1);
807             nb_frames_drop++;
808             return;
809         }
810         nb_frames_dup += nb_frames - 1;
811         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
812     }
813
814   /* duplicates frame if needed */
815   for (i = 0; i < nb_frames; i++) {
816     av_init_packet(&pkt);
817     pkt.data = NULL;
818     pkt.size = 0;
819
820     in_picture->pts = ost->sync_opts;
821
822     if (!check_recording_time(ost))
823         return;
824
825     if (s->oformat->flags & AVFMT_RAWPICTURE &&
826         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
827         /* raw pictures are written as AVPicture structure to
828            avoid any copies. We support temporarily the older
829            method. */
830         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
831         enc->coded_frame->top_field_first  = in_picture->top_field_first;
832         pkt.data   = (uint8_t *)in_picture;
833         pkt.size   =  sizeof(AVPicture);
834         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
835         pkt.flags |= AV_PKT_FLAG_KEY;
836
837         write_frame(s, &pkt, ost);
838         video_size += pkt.size;
839     } else {
840         int got_packet;
841         AVFrame big_picture;
842
843         big_picture = *in_picture;
844         /* better than nothing: use input picture interlaced
845            settings */
846         big_picture.interlaced_frame = in_picture->interlaced_frame;
847         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
848             if (ost->top_field_first == -1)
849                 big_picture.top_field_first = in_picture->top_field_first;
850             else
851                 big_picture.top_field_first = !!ost->top_field_first;
852         }
853
854         /* handles same_quant here. This is not correct because it may
855            not be a global option */
856         big_picture.quality = quality;
857         if (!enc->me_threshold)
858             big_picture.pict_type = 0;
859         if (ost->forced_kf_index < ost->forced_kf_count &&
860             big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
861             big_picture.pict_type = AV_PICTURE_TYPE_I;
862             ost->forced_kf_index++;
863         }
864         update_benchmark(NULL);
865         ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
866         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
867         if (ret < 0) {
868             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
869             exit_program(1);
870         }
871
872         if (got_packet) {
873             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
874                 pkt.pts = ost->sync_opts;
875
876             if (pkt.pts != AV_NOPTS_VALUE)
877                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
878             if (pkt.dts != AV_NOPTS_VALUE)
879                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
880
881             if (debug_ts) {
882                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
883                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
884                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
885                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
886             }
887
888             write_frame(s, &pkt, ost);
889             frame_size = pkt.size;
890             video_size += pkt.size;
891             av_free_packet(&pkt);
892
893             /* if two pass, output log */
894             if (ost->logfile && enc->stats_out) {
895                 fprintf(ost->logfile, "%s", enc->stats_out);
896             }
897         }
898     }
899     ost->sync_opts++;
900     /*
901      * For video, number of frames in == number of packets out.
902      * But there may be reordering, so we can't throw away frames on encoder
903      * flush, we need to limit them here, before they go into encoder.
904      */
905     ost->frame_number++;
906   }
907
908     if (vstats_filename && frame_size)
909         do_video_stats(output_files[ost->file_index]->ctx, ost, frame_size);
910 }
911
912 static double psnr(double d)
913 {
914     return -10.0 * log(d) / log(10.0);
915 }
916
917 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
918                            int frame_size)
919 {
920     AVCodecContext *enc;
921     int frame_number;
922     double ti1, bitrate, avg_bitrate;
923
924     /* this is executed just the first time do_video_stats is called */
925     if (!vstats_file) {
926         vstats_file = fopen(vstats_filename, "w");
927         if (!vstats_file) {
928             perror("fopen");
929             exit_program(1);
930         }
931     }
932
933     enc = ost->st->codec;
934     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
935         frame_number = ost->frame_number;
936         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
937         if (enc->flags&CODEC_FLAG_PSNR)
938             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
939
940         fprintf(vstats_file,"f_size= %6d ", frame_size);
941         /* compute pts value */
942         ti1 = ost->sync_opts * av_q2d(enc->time_base);
943         if (ti1 < 0.01)
944             ti1 = 0.01;
945
946         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
947         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
948         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
949                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
950         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
951     }
952 }
953
954 /**
955  * Get and encode new output from any of the filtergraphs, without causing
956  * activity.
957  *
958  * @return  0 for success, <0 for severe errors
959  */
960 static int reap_filters(void)
961 {
962     AVFilterBufferRef *picref;
963     AVFrame *filtered_frame = NULL;
964     int i;
965     int64_t frame_pts;
966
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, 0);
1424         }
1425         return ret;
1426     }
1427
1428 #if 1
1429     /* increment next_dts to use for the case where the input stream does not
1430        have timestamps or there are multiple frames in the packet */
1431     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1432                      avctx->sample_rate;
1433     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1434                      avctx->sample_rate;
1435 #endif
1436
1437     rate_emu_sleep(ist);
1438
1439     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1440                        ist->resample_channels       != avctx->channels               ||
1441                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1442                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1443     if (resample_changed) {
1444         char layout1[64], layout2[64];
1445
1446         if (!guess_input_channel_layout(ist)) {
1447             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1448                    "layout for Input Stream #%d.%d\n", ist->file_index,
1449                    ist->st->index);
1450             exit_program(1);
1451         }
1452         decoded_frame->channel_layout = avctx->channel_layout;
1453
1454         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1455                                      ist->resample_channel_layout);
1456         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1457                                      decoded_frame->channel_layout);
1458
1459         av_log(NULL, AV_LOG_INFO,
1460                "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",
1461                ist->file_index, ist->st->index,
1462                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1463                ist->resample_channels, layout1,
1464                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1465                avctx->channels, layout2);
1466
1467         ist->resample_sample_fmt     = decoded_frame->format;
1468         ist->resample_sample_rate    = decoded_frame->sample_rate;
1469         ist->resample_channel_layout = decoded_frame->channel_layout;
1470         ist->resample_channels       = avctx->channels;
1471
1472         for (i = 0; i < nb_filtergraphs; i++)
1473             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1474                 FilterGraph *fg = filtergraphs[i];
1475                 int j;
1476                 if (configure_filtergraph(fg) < 0) {
1477                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1478                     exit_program(1);
1479                 }
1480                 for (j = 0; j < fg->nb_outputs; j++) {
1481                     OutputStream *ost = fg->outputs[j]->ost;
1482                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1483                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1484                         av_buffersink_set_frame_size(ost->filter->filter,
1485                                                      ost->st->codec->frame_size);
1486                 }
1487             }
1488     }
1489
1490     /* if the decoder provides a pts, use it instead of the last packet pts.
1491        the decoder could be delaying output by a packet or more. */
1492     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1493         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1494         decoded_frame_tb   = avctx->time_base;
1495     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1496         decoded_frame->pts = decoded_frame->pkt_pts;
1497         pkt->pts           = AV_NOPTS_VALUE;
1498         decoded_frame_tb   = ist->st->time_base;
1499     } else if (pkt->pts != AV_NOPTS_VALUE) {
1500         decoded_frame->pts = pkt->pts;
1501         pkt->pts           = AV_NOPTS_VALUE;
1502         decoded_frame_tb   = ist->st->time_base;
1503     }else {
1504         decoded_frame->pts = ist->dts;
1505         decoded_frame_tb   = AV_TIME_BASE_Q;
1506     }
1507     if (decoded_frame->pts != AV_NOPTS_VALUE)
1508         decoded_frame->pts = av_rescale_q(decoded_frame->pts,
1509                                           decoded_frame_tb,
1510                                           (AVRational){1, ist->st->codec->sample_rate});
1511     for (i = 0; i < ist->nb_filters; i++)
1512         av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame,
1513                                AV_BUFFERSRC_FLAG_PUSH);
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, 0);
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                                  AV_BUFFERSRC_FLAG_PUSH);
1626         } else
1627         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, AV_BUFFERSRC_FLAG_PUSH)<0) {
1628             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
1629             exit_program(1);
1630         }
1631
1632     }
1633
1634     av_free(buffer_to_free);
1635     return ret;
1636 }
1637
1638 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1639 {
1640     AVSubtitle subtitle;
1641     int64_t pts = pkt->pts;
1642     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1643                                           &subtitle, got_output, pkt);
1644     if (ret < 0 || !*got_output) {
1645         if (!pkt->size)
1646             sub2video_flush(ist);
1647         return ret;
1648     }
1649
1650     if (ist->fix_sub_duration) {
1651         if (ist->prev_sub.got_output) {
1652             int end = av_rescale_q(pts - ist->prev_sub.pts, ist->st->time_base,
1653                                    (AVRational){ 1, 1000 });
1654             if (end < ist->prev_sub.subtitle.end_display_time) {
1655                 av_log(ist->st->codec, AV_LOG_DEBUG,
1656                        "Subtitle duration reduced from %d to %d\n",
1657                        ist->prev_sub.subtitle.end_display_time, end);
1658                 ist->prev_sub.subtitle.end_display_time = end;
1659             }
1660         }
1661         FFSWAP(int64_t,    pts,         ist->prev_sub.pts);
1662         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1663         FFSWAP(int,        ret,         ist->prev_sub.ret);
1664         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1665     }
1666
1667     if (!*got_output || !subtitle.num_rects)
1668         return ret;
1669
1670     rate_emu_sleep(ist);
1671
1672     sub2video_update(ist, &subtitle, pkt->pts);
1673
1674     for (i = 0; i < nb_output_streams; i++) {
1675         OutputStream *ost = output_streams[i];
1676
1677         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1678             continue;
1679
1680         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle, pts);
1681     }
1682
1683     avsubtitle_free(&subtitle);
1684     return ret;
1685 }
1686
1687 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1688 static int output_packet(InputStream *ist, const AVPacket *pkt)
1689 {
1690     int ret = 0, i;
1691     int got_output;
1692
1693     AVPacket avpkt;
1694     if (!ist->saw_first_ts) {
1695         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;
1696         ist->pts = 0;
1697         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1698             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1699             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1700         }
1701         ist->saw_first_ts = 1;
1702     }
1703
1704     if (ist->next_dts == AV_NOPTS_VALUE)
1705         ist->next_dts = ist->dts;
1706     if (ist->next_pts == AV_NOPTS_VALUE)
1707         ist->next_pts = ist->pts;
1708
1709     if (pkt == NULL) {
1710         /* EOF handling */
1711         av_init_packet(&avpkt);
1712         avpkt.data = NULL;
1713         avpkt.size = 0;
1714         goto handle_eof;
1715     } else {
1716         avpkt = *pkt;
1717     }
1718
1719     if (pkt->dts != AV_NOPTS_VALUE) {
1720         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1721         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1722             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1723     }
1724
1725     // while we have more to decode or while the decoder did output something on EOF
1726     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1727         int duration;
1728     handle_eof:
1729
1730         ist->pts = ist->next_pts;
1731         ist->dts = ist->next_dts;
1732
1733         if (avpkt.size && avpkt.size != pkt->size) {
1734             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1735                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1736             ist->showed_multi_packet_warning = 1;
1737         }
1738
1739         switch (ist->st->codec->codec_type) {
1740         case AVMEDIA_TYPE_AUDIO:
1741             ret = decode_audio    (ist, &avpkt, &got_output);
1742             break;
1743         case AVMEDIA_TYPE_VIDEO:
1744             ret = decode_video    (ist, &avpkt, &got_output);
1745             if (avpkt.duration) {
1746                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1747             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1748                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1749                 duration = ((int64_t)AV_TIME_BASE *
1750                                 ist->st->codec->time_base.num * ticks) /
1751                                 ist->st->codec->time_base.den;
1752             } else
1753                 duration = 0;
1754
1755             if(ist->dts != AV_NOPTS_VALUE && duration) {
1756                 ist->next_dts += duration;
1757             }else
1758                 ist->next_dts = AV_NOPTS_VALUE;
1759
1760             if (got_output)
1761                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1762             break;
1763         case AVMEDIA_TYPE_SUBTITLE:
1764             ret = transcode_subtitles(ist, &avpkt, &got_output);
1765             break;
1766         default:
1767             return -1;
1768         }
1769
1770         if (ret < 0)
1771             return ret;
1772
1773         avpkt.dts=
1774         avpkt.pts= AV_NOPTS_VALUE;
1775
1776         // touch data and size only if not EOF
1777         if (pkt) {
1778             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1779                 ret = avpkt.size;
1780             avpkt.data += ret;
1781             avpkt.size -= ret;
1782         }
1783         if (!got_output) {
1784             continue;
1785         }
1786     }
1787
1788     /* handle stream copy */
1789     if (!ist->decoding_needed) {
1790         rate_emu_sleep(ist);
1791         ist->dts = ist->next_dts;
1792         switch (ist->st->codec->codec_type) {
1793         case AVMEDIA_TYPE_AUDIO:
1794             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1795                              ist->st->codec->sample_rate;
1796             break;
1797         case AVMEDIA_TYPE_VIDEO:
1798             if (pkt->duration) {
1799                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1800             } else if(ist->st->codec->time_base.num != 0) {
1801                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1802                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1803                                   ist->st->codec->time_base.num * ticks) /
1804                                   ist->st->codec->time_base.den;
1805             }
1806             break;
1807         }
1808         ist->pts = ist->dts;
1809         ist->next_pts = ist->next_dts;
1810     }
1811     for (i = 0; pkt && i < nb_output_streams; i++) {
1812         OutputStream *ost = output_streams[i];
1813
1814         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1815             continue;
1816
1817         do_streamcopy(ist, ost, pkt);
1818     }
1819
1820     return 0;
1821 }
1822
1823 static void print_sdp(void)
1824 {
1825     char sdp[2048];
1826     int i;
1827     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1828
1829     if (!avc)
1830         exit_program(1);
1831     for (i = 0; i < nb_output_files; i++)
1832         avc[i] = output_files[i]->ctx;
1833
1834     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1835     printf("SDP:\n%s\n", sdp);
1836     fflush(stdout);
1837     av_freep(&avc);
1838 }
1839
1840 static int init_input_stream(int ist_index, char *error, int error_len)
1841 {
1842     InputStream *ist = input_streams[ist_index];
1843
1844     if (ist->decoding_needed) {
1845         AVCodec *codec = ist->dec;
1846         if (!codec) {
1847             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1848                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1849             return AVERROR(EINVAL);
1850         }
1851
1852         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
1853         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
1854             ist->st->codec->get_buffer     = codec_get_buffer;
1855             ist->st->codec->release_buffer = codec_release_buffer;
1856             ist->st->codec->opaque         = &ist->buffer_pool;
1857         }
1858
1859         if (!av_dict_get(ist->opts, "threads", NULL, 0))
1860             av_dict_set(&ist->opts, "threads", "auto", 0);
1861         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
1862             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1863                     ist->file_index, ist->st->index);
1864             return AVERROR(EINVAL);
1865         }
1866         assert_codec_experimental(ist->st->codec, 0);
1867         assert_avoptions(ist->opts);
1868     }
1869
1870     ist->next_pts = AV_NOPTS_VALUE;
1871     ist->next_dts = AV_NOPTS_VALUE;
1872     ist->is_start = 1;
1873
1874     return 0;
1875 }
1876
1877 static InputStream *get_input_stream(OutputStream *ost)
1878 {
1879     if (ost->source_index >= 0)
1880         return input_streams[ost->source_index];
1881     return NULL;
1882 }
1883
1884 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1885                                     AVCodecContext *avctx)
1886 {
1887     char *p;
1888     int n = 1, i;
1889     int64_t t;
1890
1891     for (p = kf; *p; p++)
1892         if (*p == ',')
1893             n++;
1894     ost->forced_kf_count = n;
1895     ost->forced_kf_pts   = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1896     if (!ost->forced_kf_pts) {
1897         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1898         exit_program(1);
1899     }
1900
1901     p = kf;
1902     for (i = 0; i < n; i++) {
1903         char *next = strchr(p, ',');
1904
1905         if (next)
1906             *next++ = 0;
1907
1908         t = parse_time_or_die("force_key_frames", p, 1);
1909         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1910
1911         p = next;
1912     }
1913 }
1914
1915 static void report_new_stream(int input_index, AVPacket *pkt)
1916 {
1917     InputFile *file = input_files[input_index];
1918     AVStream *st = file->ctx->streams[pkt->stream_index];
1919
1920     if (pkt->stream_index < file->nb_streams_warn)
1921         return;
1922     av_log(file->ctx, AV_LOG_WARNING,
1923            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
1924            av_get_media_type_string(st->codec->codec_type),
1925            input_index, pkt->stream_index,
1926            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
1927     file->nb_streams_warn = pkt->stream_index + 1;
1928 }
1929
1930 static int transcode_init(void)
1931 {
1932     int ret = 0, i, j, k;
1933     AVFormatContext *oc;
1934     AVCodecContext *codec;
1935     OutputStream *ost;
1936     InputStream *ist;
1937     char error[1024];
1938     int want_sdp = 1;
1939
1940     /* init framerate emulation */
1941     for (i = 0; i < nb_input_files; i++) {
1942         InputFile *ifile = input_files[i];
1943         if (ifile->rate_emu)
1944             for (j = 0; j < ifile->nb_streams; j++)
1945                 input_streams[j + ifile->ist_index]->start = av_gettime();
1946     }
1947
1948     /* output stream init */
1949     for (i = 0; i < nb_output_files; i++) {
1950         oc = output_files[i]->ctx;
1951         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
1952             av_dump_format(oc, i, oc->filename, 1);
1953             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
1954             return AVERROR(EINVAL);
1955         }
1956     }
1957
1958     /* init complex filtergraphs */
1959     for (i = 0; i < nb_filtergraphs; i++)
1960         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
1961             return ret;
1962
1963     /* for each output stream, we compute the right encoding parameters */
1964     for (i = 0; i < nb_output_streams; i++) {
1965         AVCodecContext *icodec = NULL;
1966         ost = output_streams[i];
1967         oc  = output_files[ost->file_index]->ctx;
1968         ist = get_input_stream(ost);
1969
1970         if (ost->attachment_filename)
1971             continue;
1972
1973         codec  = ost->st->codec;
1974
1975         if (ist) {
1976             icodec = ist->st->codec;
1977
1978             ost->st->disposition          = ist->st->disposition;
1979             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
1980             codec->chroma_sample_location = icodec->chroma_sample_location;
1981         }
1982
1983         if (ost->stream_copy) {
1984             uint64_t extra_size;
1985
1986             av_assert0(ist && !ost->filter);
1987
1988             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
1989
1990             if (extra_size > INT_MAX) {
1991                 return AVERROR(EINVAL);
1992             }
1993
1994             /* if stream_copy is selected, no need to decode or encode */
1995             codec->codec_id   = icodec->codec_id;
1996             codec->codec_type = icodec->codec_type;
1997
1998             if (!codec->codec_tag) {
1999                 if (!oc->oformat->codec_tag ||
2000                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2001                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2002                     codec->codec_tag = icodec->codec_tag;
2003             }
2004
2005             codec->bit_rate       = icodec->bit_rate;
2006             codec->rc_max_rate    = icodec->rc_max_rate;
2007             codec->rc_buffer_size = icodec->rc_buffer_size;
2008             codec->field_order    = icodec->field_order;
2009             codec->extradata      = av_mallocz(extra_size);
2010             if (!codec->extradata) {
2011                 return AVERROR(ENOMEM);
2012             }
2013             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2014             codec->extradata_size= icodec->extradata_size;
2015             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2016
2017             codec->time_base = ist->st->time_base;
2018             /*
2019              * Avi is a special case here because it supports variable fps but
2020              * having the fps and timebase differe significantly adds quite some
2021              * overhead
2022              */
2023             if(!strcmp(oc->oformat->name, "avi")) {
2024                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2025                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2026                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2027                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2028                      || copy_tb==2){
2029                     codec->time_base.num = ist->st->r_frame_rate.den;
2030                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2031                     codec->ticks_per_frame = 2;
2032                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2033                                  && av_q2d(ist->st->time_base) < 1.0/500
2034                     || copy_tb==0){
2035                     codec->time_base = icodec->time_base;
2036                     codec->time_base.num *= icodec->ticks_per_frame;
2037                     codec->time_base.den *= 2;
2038                     codec->ticks_per_frame = 2;
2039                 }
2040             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2041                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2042                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2043             ) {
2044                 if(   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2045                                 && av_q2d(ist->st->time_base) < 1.0/500
2046                    || copy_tb==0){
2047                     codec->time_base = icodec->time_base;
2048                     codec->time_base.num *= icodec->ticks_per_frame;
2049                 }
2050             }
2051
2052             if(ost->frame_rate.num)
2053                 codec->time_base = av_inv_q(ost->frame_rate);
2054
2055             av_reduce(&codec->time_base.num, &codec->time_base.den,
2056                         codec->time_base.num, codec->time_base.den, INT_MAX);
2057
2058             switch (codec->codec_type) {
2059             case AVMEDIA_TYPE_AUDIO:
2060                 if (audio_volume != 256) {
2061                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2062                     exit_program(1);
2063                 }
2064                 codec->channel_layout     = icodec->channel_layout;
2065                 codec->sample_rate        = icodec->sample_rate;
2066                 codec->channels           = icodec->channels;
2067                 codec->frame_size         = icodec->frame_size;
2068                 codec->audio_service_type = icodec->audio_service_type;
2069                 codec->block_align        = icodec->block_align;
2070                 if((codec->block_align == 1 || codec->block_align == 1152) && codec->codec_id == AV_CODEC_ID_MP3)
2071                     codec->block_align= 0;
2072                 if(codec->codec_id == AV_CODEC_ID_AC3)
2073                     codec->block_align= 0;
2074                 break;
2075             case AVMEDIA_TYPE_VIDEO:
2076                 codec->pix_fmt            = icodec->pix_fmt;
2077                 codec->width              = icodec->width;
2078                 codec->height             = icodec->height;
2079                 codec->has_b_frames       = icodec->has_b_frames;
2080                 if (!codec->sample_aspect_ratio.num) {
2081                     codec->sample_aspect_ratio   =
2082                     ost->st->sample_aspect_ratio =
2083                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2084                         ist->st->codec->sample_aspect_ratio.num ?
2085                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2086                 }
2087                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2088                 break;
2089             case AVMEDIA_TYPE_SUBTITLE:
2090                 codec->width  = icodec->width;
2091                 codec->height = icodec->height;
2092                 break;
2093             case AVMEDIA_TYPE_DATA:
2094             case AVMEDIA_TYPE_ATTACHMENT:
2095                 break;
2096             default:
2097                 abort();
2098             }
2099         } else {
2100             if (!ost->enc)
2101                 ost->enc = avcodec_find_encoder(codec->codec_id);
2102             if (!ost->enc) {
2103                 /* should only happen when a default codec is not present. */
2104                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2105                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2106                 ret = AVERROR(EINVAL);
2107                 goto dump_format;
2108             }
2109
2110             if (ist)
2111                 ist->decoding_needed = 1;
2112             ost->encoding_needed = 1;
2113
2114             if (!ost->filter &&
2115                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2116                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2117                     FilterGraph *fg;
2118                     fg = init_simple_filtergraph(ist, ost);
2119                     if (configure_filtergraph(fg)) {
2120                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2121                         exit(1);
2122                     }
2123             }
2124
2125             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2126                 if (ost->filter && !ost->frame_rate.num)
2127                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2128                 if (ist && !ost->frame_rate.num)
2129                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2130 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2131                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2132                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2133                     ost->frame_rate = ost->enc->supported_framerates[idx];
2134                 }
2135             }
2136
2137             switch (codec->codec_type) {
2138             case AVMEDIA_TYPE_AUDIO:
2139                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2140                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2141                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2142                 codec->channels       = av_get_channel_layout_nb_channels(codec->channel_layout);
2143                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2144                 break;
2145             case AVMEDIA_TYPE_VIDEO:
2146                 codec->time_base = av_inv_q(ost->frame_rate);
2147                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2148                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2149                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2150                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2151                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2152                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2153                 }
2154                 for (j = 0; j < ost->forced_kf_count; j++)
2155                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2156                                                          AV_TIME_BASE_Q,
2157                                                          codec->time_base);
2158
2159                 codec->width  = ost->filter->filter->inputs[0]->w;
2160                 codec->height = ost->filter->filter->inputs[0]->h;
2161                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2162                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
2163                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
2164                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2165                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2166
2167                 if (!icodec ||
2168                     codec->width   != icodec->width  ||
2169                     codec->height  != icodec->height ||
2170                     codec->pix_fmt != icodec->pix_fmt) {
2171                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2172                 }
2173
2174                 if (ost->forced_keyframes)
2175                     parse_forced_key_frames(ost->forced_keyframes, ost,
2176                                             ost->st->codec);
2177                 break;
2178             case AVMEDIA_TYPE_SUBTITLE:
2179                 codec->time_base = (AVRational){1, 1000};
2180                 if (!codec->width) {
2181                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2182                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2183                 }
2184                 break;
2185             default:
2186                 abort();
2187                 break;
2188             }
2189             /* two pass mode */
2190             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2191                 char logfilename[1024];
2192                 FILE *f;
2193
2194                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2195                          pass_logfilename_prefix ? pass_logfilename_prefix : DEFAULT_PASS_LOGFILENAME_PREFIX,
2196                          i);
2197                 if (!strcmp(ost->enc->name, "libx264")) {
2198                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2199                 } else {
2200                     if (codec->flags & CODEC_FLAG_PASS2) {
2201                         char  *logbuffer;
2202                         size_t logbuffer_size;
2203                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2204                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2205                                    logfilename);
2206                             exit_program(1);
2207                         }
2208                         codec->stats_in = logbuffer;
2209                     }
2210                     if (codec->flags & CODEC_FLAG_PASS1) {
2211                         f = fopen(logfilename, "wb");
2212                         if (!f) {
2213                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2214                                 logfilename, strerror(errno));
2215                             exit_program(1);
2216                         }
2217                         ost->logfile = f;
2218                     }
2219                 }
2220             }
2221         }
2222     }
2223
2224     /* open each encoder */
2225     for (i = 0; i < nb_output_streams; i++) {
2226         ost = output_streams[i];
2227         if (ost->encoding_needed) {
2228             AVCodec      *codec = ost->enc;
2229             AVCodecContext *dec = NULL;
2230
2231             if ((ist = get_input_stream(ost)))
2232                 dec = ist->st->codec;
2233             if (dec && dec->subtitle_header) {
2234                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2235                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2236                 if (!ost->st->codec->subtitle_header) {
2237                     ret = AVERROR(ENOMEM);
2238                     goto dump_format;
2239                 }
2240                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2241                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2242             }
2243             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2244                 av_dict_set(&ost->opts, "threads", "auto", 0);
2245             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2246                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2247                         ost->file_index, ost->index);
2248                 ret = AVERROR(EINVAL);
2249                 goto dump_format;
2250             }
2251             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2252                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2253                 av_buffersink_set_frame_size(ost->filter->filter,
2254                                              ost->st->codec->frame_size);
2255             assert_codec_experimental(ost->st->codec, 1);
2256             assert_avoptions(ost->opts);
2257             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2258                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2259                                              " It takes bits/s as argument, not kbits/s\n");
2260             extra_size += ost->st->codec->extradata_size;
2261
2262             if (ost->st->codec->me_threshold)
2263                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
2264         }
2265     }
2266
2267     /* init input streams */
2268     for (i = 0; i < nb_input_streams; i++)
2269         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
2270             goto dump_format;
2271
2272     /* discard unused programs */
2273     for (i = 0; i < nb_input_files; i++) {
2274         InputFile *ifile = input_files[i];
2275         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2276             AVProgram *p = ifile->ctx->programs[j];
2277             int discard  = AVDISCARD_ALL;
2278
2279             for (k = 0; k < p->nb_stream_indexes; k++)
2280                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2281                     discard = AVDISCARD_DEFAULT;
2282                     break;
2283                 }
2284             p->discard = discard;
2285         }
2286     }
2287
2288     /* open files and write file headers */
2289     for (i = 0; i < nb_output_files; i++) {
2290         oc = output_files[i]->ctx;
2291         oc->interrupt_callback = int_cb;
2292         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2293             char errbuf[128];
2294             const char *errbuf_ptr = errbuf;
2295             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
2296                 errbuf_ptr = strerror(AVUNERROR(ret));
2297             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
2298             ret = AVERROR(EINVAL);
2299             goto dump_format;
2300         }
2301 //         assert_avoptions(output_files[i]->opts);
2302         if (strcmp(oc->oformat->name, "rtp")) {
2303             want_sdp = 0;
2304         }
2305     }
2306
2307  dump_format:
2308     /* dump the file output parameters - cannot be done before in case
2309        of stream copy */
2310     for (i = 0; i < nb_output_files; i++) {
2311         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2312     }
2313
2314     /* dump the stream mapping */
2315     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2316     for (i = 0; i < nb_input_streams; i++) {
2317         ist = input_streams[i];
2318
2319         for (j = 0; j < ist->nb_filters; j++) {
2320             if (ist->filters[j]->graph->graph_desc) {
2321                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2322                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2323                        ist->filters[j]->name);
2324                 if (nb_filtergraphs > 1)
2325                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2326                 av_log(NULL, AV_LOG_INFO, "\n");
2327             }
2328         }
2329     }
2330
2331     for (i = 0; i < nb_output_streams; i++) {
2332         ost = output_streams[i];
2333
2334         if (ost->attachment_filename) {
2335             /* an attached file */
2336             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2337                    ost->attachment_filename, ost->file_index, ost->index);
2338             continue;
2339         }
2340
2341         if (ost->filter && ost->filter->graph->graph_desc) {
2342             /* output from a complex graph */
2343             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2344             if (nb_filtergraphs > 1)
2345                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2346
2347             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2348                    ost->index, ost->enc ? ost->enc->name : "?");
2349             continue;
2350         }
2351
2352         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2353                input_streams[ost->source_index]->file_index,
2354                input_streams[ost->source_index]->st->index,
2355                ost->file_index,
2356                ost->index);
2357         if (ost->sync_ist != input_streams[ost->source_index])
2358             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2359                    ost->sync_ist->file_index,
2360                    ost->sync_ist->st->index);
2361         if (ost->stream_copy)
2362             av_log(NULL, AV_LOG_INFO, " (copy)");
2363         else
2364             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2365                    input_streams[ost->source_index]->dec->name : "?",
2366                    ost->enc ? ost->enc->name : "?");
2367         av_log(NULL, AV_LOG_INFO, "\n");
2368     }
2369
2370     if (ret) {
2371         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2372         return ret;
2373     }
2374
2375     if (want_sdp) {
2376         print_sdp();
2377     }
2378
2379     return 0;
2380 }
2381
2382 /**
2383  * @return 1 if there are still streams where more output is wanted,
2384  *         0 otherwise
2385  */
2386 static int need_output(void)
2387 {
2388     int i;
2389
2390     for (i = 0; i < nb_output_streams; i++) {
2391         OutputStream *ost    = output_streams[i];
2392         OutputFile *of       = output_files[ost->file_index];
2393         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2394
2395         if (ost->finished ||
2396             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2397             continue;
2398         if (ost->frame_number >= ost->max_frames) {
2399             int j;
2400             for (j = 0; j < of->ctx->nb_streams; j++)
2401                 output_streams[of->ost_index + j]->finished = 1;
2402             continue;
2403         }
2404
2405         return 1;
2406     }
2407
2408     return 0;
2409 }
2410
2411 /**
2412  * Select the output stream to process.
2413  *
2414  * @return  selected output stream, or NULL if none available
2415  */
2416 static OutputStream *choose_output(void)
2417 {
2418     int i;
2419     int64_t opts_min = INT64_MAX;
2420     OutputStream *ost_min = NULL;
2421
2422     for (i = 0; i < nb_output_streams; i++) {
2423         OutputStream *ost = output_streams[i];
2424         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2425                                     AV_TIME_BASE_Q);
2426         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2427             opts_min = opts;
2428             ost_min  = ost;
2429         }
2430     }
2431     return ost_min;
2432 }
2433
2434 static int check_keyboard_interaction(int64_t cur_time)
2435 {
2436     int i, ret, key;
2437     static int64_t last_time;
2438     if (received_nb_signals)
2439         return AVERROR_EXIT;
2440     /* read_key() returns 0 on EOF */
2441     if(cur_time - last_time >= 100000 && !run_as_daemon){
2442         key =  read_key();
2443         last_time = cur_time;
2444     }else
2445         key = -1;
2446     if (key == 'q')
2447         return AVERROR_EXIT;
2448     if (key == '+') av_log_set_level(av_log_get_level()+10);
2449     if (key == '-') av_log_set_level(av_log_get_level()-10);
2450     if (key == 's') qp_hist     ^= 1;
2451     if (key == 'h'){
2452         if (do_hex_dump){
2453             do_hex_dump = do_pkt_dump = 0;
2454         } else if(do_pkt_dump){
2455             do_hex_dump = 1;
2456         } else
2457             do_pkt_dump = 1;
2458         av_log_set_level(AV_LOG_DEBUG);
2459     }
2460     if (key == 'c' || key == 'C'){
2461         char buf[4096], target[64], command[256], arg[256] = {0};
2462         double time;
2463         int k, n = 0;
2464         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2465         i = 0;
2466         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2467             if (k > 0)
2468                 buf[i++] = k;
2469         buf[i] = 0;
2470         if (k > 0 &&
2471             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2472             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2473                    target, time, command, arg);
2474             for (i = 0; i < nb_filtergraphs; i++) {
2475                 FilterGraph *fg = filtergraphs[i];
2476                 if (fg->graph) {
2477                     if (time < 0) {
2478                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2479                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2480                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2481                     } else {
2482                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2483                     }
2484                 }
2485             }
2486         } else {
2487             av_log(NULL, AV_LOG_ERROR,
2488                    "Parse error, at least 3 arguments were expected, "
2489                    "only %d given in string '%s'\n", n, buf);
2490         }
2491     }
2492     if (key == 'd' || key == 'D'){
2493         int debug=0;
2494         if(key == 'D') {
2495             debug = input_streams[0]->st->codec->debug<<1;
2496             if(!debug) debug = 1;
2497             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2498                 debug += debug;
2499         }else
2500             if(scanf("%d", &debug)!=1)
2501                 fprintf(stderr,"error parsing debug value\n");
2502         for(i=0;i<nb_input_streams;i++) {
2503             input_streams[i]->st->codec->debug = debug;
2504         }
2505         for(i=0;i<nb_output_streams;i++) {
2506             OutputStream *ost = output_streams[i];
2507             ost->st->codec->debug = debug;
2508         }
2509         if(debug) av_log_set_level(AV_LOG_DEBUG);
2510         fprintf(stderr,"debug=%d\n", debug);
2511     }
2512     if (key == '?'){
2513         fprintf(stderr, "key    function\n"
2514                         "?      show this help\n"
2515                         "+      increase verbosity\n"
2516                         "-      decrease verbosity\n"
2517                         "c      Send command to filtergraph\n"
2518                         "D      cycle through available debug modes\n"
2519                         "h      dump packets/hex press to cycle through the 3 states\n"
2520                         "q      quit\n"
2521                         "s      Show QP histogram\n"
2522         );
2523     }
2524     return 0;
2525 }
2526
2527 #if HAVE_PTHREADS
2528 static void *input_thread(void *arg)
2529 {
2530     InputFile *f = arg;
2531     int ret = 0;
2532
2533     while (!transcoding_finished && ret >= 0) {
2534         AVPacket pkt;
2535         ret = av_read_frame(f->ctx, &pkt);
2536
2537         if (ret == AVERROR(EAGAIN)) {
2538             av_usleep(10000);
2539             ret = 0;
2540             continue;
2541         } else if (ret < 0)
2542             break;
2543
2544         pthread_mutex_lock(&f->fifo_lock);
2545         while (!av_fifo_space(f->fifo))
2546             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2547
2548         av_dup_packet(&pkt);
2549         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2550
2551         pthread_mutex_unlock(&f->fifo_lock);
2552     }
2553
2554     f->finished = 1;
2555     return NULL;
2556 }
2557
2558 static void free_input_threads(void)
2559 {
2560     int i;
2561
2562     if (nb_input_files == 1)
2563         return;
2564
2565     transcoding_finished = 1;
2566
2567     for (i = 0; i < nb_input_files; i++) {
2568         InputFile *f = input_files[i];
2569         AVPacket pkt;
2570
2571         if (!f->fifo || f->joined)
2572             continue;
2573
2574         pthread_mutex_lock(&f->fifo_lock);
2575         while (av_fifo_size(f->fifo)) {
2576             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2577             av_free_packet(&pkt);
2578         }
2579         pthread_cond_signal(&f->fifo_cond);
2580         pthread_mutex_unlock(&f->fifo_lock);
2581
2582         pthread_join(f->thread, NULL);
2583         f->joined = 1;
2584
2585         while (av_fifo_size(f->fifo)) {
2586             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2587             av_free_packet(&pkt);
2588         }
2589         av_fifo_free(f->fifo);
2590     }
2591 }
2592
2593 static int init_input_threads(void)
2594 {
2595     int i, ret;
2596
2597     if (nb_input_files == 1)
2598         return 0;
2599
2600     for (i = 0; i < nb_input_files; i++) {
2601         InputFile *f = input_files[i];
2602
2603         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2604             return AVERROR(ENOMEM);
2605
2606         pthread_mutex_init(&f->fifo_lock, NULL);
2607         pthread_cond_init (&f->fifo_cond, NULL);
2608
2609         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2610             return AVERROR(ret);
2611     }
2612     return 0;
2613 }
2614
2615 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2616 {
2617     int ret = 0;
2618
2619     pthread_mutex_lock(&f->fifo_lock);
2620
2621     if (av_fifo_size(f->fifo)) {
2622         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2623         pthread_cond_signal(&f->fifo_cond);
2624     } else {
2625         if (f->finished)
2626             ret = AVERROR_EOF;
2627         else
2628             ret = AVERROR(EAGAIN);
2629     }
2630
2631     pthread_mutex_unlock(&f->fifo_lock);
2632
2633     return ret;
2634 }
2635 #endif
2636
2637 static int get_input_packet(InputFile *f, AVPacket *pkt)
2638 {
2639 #if HAVE_PTHREADS
2640     if (nb_input_files > 1)
2641         return get_input_packet_mt(f, pkt);
2642 #endif
2643     return av_read_frame(f->ctx, pkt);
2644 }
2645
2646 static int got_eagain(void)
2647 {
2648     int i;
2649     for (i = 0; i < nb_output_streams; i++)
2650         if (output_streams[i]->unavailable)
2651             return 1;
2652     return 0;
2653 }
2654
2655 static void reset_eagain(void)
2656 {
2657     int i;
2658     for (i = 0; i < nb_input_files; i++)
2659         input_files[i]->eagain = 0;
2660     for (i = 0; i < nb_output_streams; i++)
2661         output_streams[i]->unavailable = 0;
2662 }
2663
2664 static void close_output_stream(OutputStream *ost)
2665 {
2666     OutputFile *of = output_files[ost->file_index];
2667
2668     ost->finished = 1;
2669     if (of->shortest) {
2670         int i;
2671         for (i = 0; i < of->ctx->nb_streams; i++)
2672             output_streams[of->ost_index + i]->finished = 1;
2673     }
2674 }
2675
2676 /**
2677  * @return
2678  * - 0 -- one packet was read and processed
2679  * - AVERROR(EAGAIN) -- no packets were available for selected file,
2680  *   this function should be called again
2681  * - AVERROR_EOF -- this function should not be called again
2682  */
2683 static int process_input(int file_index)
2684 {
2685     InputFile *ifile = input_files[file_index];
2686     AVFormatContext *is;
2687     InputStream *ist;
2688     AVPacket pkt;
2689     int ret, i, j;
2690
2691     is  = ifile->ctx;
2692     ret = get_input_packet(ifile, &pkt);
2693
2694     if (ret == AVERROR(EAGAIN)) {
2695         ifile->eagain = 1;
2696         return ret;
2697     }
2698     if (ret < 0) {
2699         if (ret != AVERROR_EOF) {
2700             print_error(is->filename, ret);
2701             if (exit_on_error)
2702                 exit_program(1);
2703         }
2704         ifile->eof_reached = 1;
2705
2706         for (i = 0; i < ifile->nb_streams; i++) {
2707             ist = input_streams[ifile->ist_index + i];
2708             if (ist->decoding_needed)
2709                 output_packet(ist, NULL);
2710
2711             /* mark all outputs that don't go through lavfi as finished */
2712             for (j = 0; j < nb_output_streams; j++) {
2713                 OutputStream *ost = output_streams[j];
2714
2715                 if (ost->source_index == ifile->ist_index + i &&
2716                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2717                     close_output_stream(ost);
2718             }
2719         }
2720
2721         return AVERROR(EAGAIN);
2722     }
2723
2724     reset_eagain();
2725
2726     if (do_pkt_dump) {
2727         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2728                          is->streams[pkt.stream_index]);
2729     }
2730     /* the following test is needed in case new streams appear
2731        dynamically in stream : we ignore them */
2732     if (pkt.stream_index >= ifile->nb_streams) {
2733         report_new_stream(file_index, &pkt);
2734         goto discard_packet;
2735     }
2736
2737     ist = input_streams[ifile->ist_index + pkt.stream_index];
2738     if (ist->discard)
2739         goto discard_packet;
2740
2741     if(!ist->wrap_correction_done && input_files[file_index]->ctx->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
2742         uint64_t stime = av_rescale_q(input_files[file_index]->ctx->start_time, AV_TIME_BASE_Q, ist->st->time_base);
2743         uint64_t stime2= stime + (1LL<<ist->st->pts_wrap_bits);
2744         ist->wrap_correction_done = 1;
2745         if(pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime && pkt.dts - stime > stime2 - pkt.dts) {
2746             pkt.dts -= 1LL<<ist->st->pts_wrap_bits;
2747             ist->wrap_correction_done = 0;
2748         }
2749         if(pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime && pkt.pts - stime > stime2 - pkt.pts) {
2750             pkt.pts -= 1LL<<ist->st->pts_wrap_bits;
2751             ist->wrap_correction_done = 0;
2752         }
2753     }
2754
2755     if (pkt.dts != AV_NOPTS_VALUE)
2756         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2757     if (pkt.pts != AV_NOPTS_VALUE)
2758         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2759
2760     if (pkt.pts != AV_NOPTS_VALUE)
2761         pkt.pts *= ist->ts_scale;
2762     if (pkt.dts != AV_NOPTS_VALUE)
2763         pkt.dts *= ist->ts_scale;
2764
2765     if (debug_ts) {
2766         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
2767                 "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",
2768                 ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2769                 av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
2770                 av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
2771                 av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2772                 av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2773                 input_files[ist->file_index]->ts_offset);
2774     }
2775
2776     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2777         !copy_ts) {
2778         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2779         int64_t delta   = pkt_dts - ist->next_dts;
2780         if (is->iformat->flags & AVFMT_TS_DISCONT) {
2781         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2782             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2783                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2784             pkt_dts+1<ist->pts){
2785             ifile->ts_offset -= delta;
2786             av_log(NULL, AV_LOG_DEBUG,
2787                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2788                    delta, ifile->ts_offset);
2789             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2790             if (pkt.pts != AV_NOPTS_VALUE)
2791                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2792         }
2793         } else {
2794             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2795                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2796                ) {
2797                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
2798                 pkt.dts = AV_NOPTS_VALUE;
2799             }
2800             if (pkt.pts != AV_NOPTS_VALUE){
2801                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
2802                 delta   = pkt_pts - ist->next_dts;
2803                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2804                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2805                    ) {
2806                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
2807                     pkt.pts = AV_NOPTS_VALUE;
2808                 }
2809             }
2810         }
2811     }
2812
2813     sub2video_heartbeat(ist, pkt.pts);
2814
2815     ret = output_packet(ist, &pkt);
2816     if (ret < 0) {
2817         char buf[128];
2818         av_strerror(ret, buf, sizeof(buf));
2819         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
2820                 ist->file_index, ist->st->index, buf);
2821         if (exit_on_error)
2822             exit_program(1);
2823     }
2824
2825 discard_packet:
2826     av_free_packet(&pkt);
2827
2828     return 0;
2829 }
2830
2831 /**
2832  * Perform a step of transcoding for the specified filter graph.
2833  *
2834  * @param[in]  graph     filter graph to consider
2835  * @param[out] best_ist  input stream where a frame would allow to continue
2836  * @return  0 for success, <0 for error
2837  */
2838 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
2839 {
2840     int i, ret;
2841     int nb_requests, nb_requests_max = 0;
2842     InputFilter *ifilter;
2843     InputStream *ist;
2844
2845     *best_ist = NULL;
2846     ret = avfilter_graph_request_oldest(graph->graph);
2847     if (ret >= 0)
2848         return reap_filters();
2849
2850     if (ret == AVERROR_EOF) {
2851         ret = reap_filters();
2852         for (i = 0; i < graph->nb_outputs; i++)
2853             close_output_stream(graph->outputs[i]->ost);
2854         return ret;
2855     }
2856     if (ret != AVERROR(EAGAIN))
2857         return ret;
2858
2859     for (i = 0; i < graph->nb_inputs; i++) {
2860         ifilter = graph->inputs[i];
2861         ist = ifilter->ist;
2862         if (input_files[ist->file_index]->eagain ||
2863             input_files[ist->file_index]->eof_reached)
2864             continue;
2865         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
2866         if (nb_requests > nb_requests_max) {
2867             nb_requests_max = nb_requests;
2868             *best_ist = ist;
2869         }
2870     }
2871
2872     if (!*best_ist)
2873         for (i = 0; i < graph->nb_outputs; i++)
2874             graph->outputs[i]->ost->unavailable = 1;
2875
2876     return 0;
2877 }
2878
2879 /**
2880  * Run a single step of transcoding.
2881  *
2882  * @return  0 for success, <0 for error
2883  */
2884 static int transcode_step(void)
2885 {
2886     OutputStream *ost;
2887     InputStream  *ist;
2888     int ret;
2889
2890     ost = choose_output();
2891     if (!ost) {
2892         if (got_eagain()) {
2893             reset_eagain();
2894             av_usleep(10000);
2895             return 0;
2896         }
2897         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
2898         return AVERROR_EOF;
2899     }
2900
2901     if (ost->filter) {
2902         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
2903             return ret;
2904         if (!ist)
2905             return 0;
2906     } else {
2907         av_assert0(ost->source_index >= 0);
2908         ist = input_streams[ost->source_index];
2909     }
2910
2911     ret = process_input(ist->file_index);
2912     if (ret == AVERROR(EAGAIN)) {
2913         if (input_files[ist->file_index]->eagain)
2914             ost->unavailable = 1;
2915         return 0;
2916     }
2917     if (ret < 0)
2918         return ret == AVERROR_EOF ? 0 : ret;
2919
2920     return reap_filters();
2921 }
2922
2923 /*
2924  * The following code is the main loop of the file converter
2925  */
2926 static int transcode(void)
2927 {
2928     int ret, i;
2929     AVFormatContext *os;
2930     OutputStream *ost;
2931     InputStream *ist;
2932     int64_t timer_start;
2933
2934     ret = transcode_init();
2935     if (ret < 0)
2936         goto fail;
2937
2938     if (stdin_interaction) {
2939         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
2940     }
2941
2942     timer_start = av_gettime();
2943
2944 #if HAVE_PTHREADS
2945     if ((ret = init_input_threads()) < 0)
2946         goto fail;
2947 #endif
2948
2949     while (!received_sigterm) {
2950         int64_t cur_time= av_gettime();
2951
2952         /* if 'q' pressed, exits */
2953         if (stdin_interaction)
2954             if (check_keyboard_interaction(cur_time) < 0)
2955                 break;
2956
2957         /* check if there's any stream where output is still needed */
2958         if (!need_output()) {
2959             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
2960             break;
2961         }
2962
2963         ret = transcode_step();
2964         if (ret < 0) {
2965             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
2966                 continue;
2967
2968             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
2969             break;
2970         }
2971
2972         /* dump report by using the output first video and audio streams */
2973         print_report(0, timer_start, cur_time);
2974     }
2975 #if HAVE_PTHREADS
2976     free_input_threads();
2977 #endif
2978
2979     /* at the end of stream, we must flush the decoder buffers */
2980     for (i = 0; i < nb_input_streams; i++) {
2981         ist = input_streams[i];
2982         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
2983             output_packet(ist, NULL);
2984         }
2985     }
2986     flush_encoders();
2987
2988     term_exit();
2989
2990     /* write the trailer if needed and close file */
2991     for (i = 0; i < nb_output_files; i++) {
2992         os = output_files[i]->ctx;
2993         av_write_trailer(os);
2994     }
2995
2996     /* dump report by using the first video and audio streams */
2997     print_report(1, timer_start, av_gettime());
2998
2999     /* close each encoder */
3000     for (i = 0; i < nb_output_streams; i++) {
3001         ost = output_streams[i];
3002         if (ost->encoding_needed) {
3003             av_freep(&ost->st->codec->stats_in);
3004             avcodec_close(ost->st->codec);
3005         }
3006     }
3007
3008     /* close each decoder */
3009     for (i = 0; i < nb_input_streams; i++) {
3010         ist = input_streams[i];
3011         if (ist->decoding_needed) {
3012             avcodec_close(ist->st->codec);
3013         }
3014     }
3015
3016     /* finished ! */
3017     ret = 0;
3018
3019  fail:
3020 #if HAVE_PTHREADS
3021     free_input_threads();
3022 #endif
3023
3024     if (output_streams) {
3025         for (i = 0; i < nb_output_streams; i++) {
3026             ost = output_streams[i];
3027             if (ost) {
3028                 if (ost->stream_copy)
3029                     av_freep(&ost->st->codec->extradata);
3030                 if (ost->logfile) {
3031                     fclose(ost->logfile);
3032                     ost->logfile = NULL;
3033                 }
3034                 av_freep(&ost->st->codec->subtitle_header);
3035                 av_free(ost->forced_kf_pts);
3036                 av_dict_free(&ost->opts);
3037             }
3038         }
3039     }
3040     return ret;
3041 }
3042
3043
3044 static int64_t getutime(void)
3045 {
3046 #if HAVE_GETRUSAGE
3047     struct rusage rusage;
3048
3049     getrusage(RUSAGE_SELF, &rusage);
3050     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3051 #elif HAVE_GETPROCESSTIMES
3052     HANDLE proc;
3053     FILETIME c, e, k, u;
3054     proc = GetCurrentProcess();
3055     GetProcessTimes(proc, &c, &e, &k, &u);
3056     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3057 #else
3058     return av_gettime();
3059 #endif
3060 }
3061
3062 static int64_t getmaxrss(void)
3063 {
3064 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3065     struct rusage rusage;
3066     getrusage(RUSAGE_SELF, &rusage);
3067     return (int64_t)rusage.ru_maxrss * 1024;
3068 #elif HAVE_GETPROCESSMEMORYINFO
3069     HANDLE proc;
3070     PROCESS_MEMORY_COUNTERS memcounters;
3071     proc = GetCurrentProcess();
3072     memcounters.cb = sizeof(memcounters);
3073     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3074     return memcounters.PeakPagefileUsage;
3075 #else
3076     return 0;
3077 #endif
3078 }
3079
3080 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3081 {
3082 }
3083
3084 static void parse_cpuflags(int argc, char **argv, const OptionDef *options)
3085 {
3086     int idx = locate_option(argc, argv, options, "cpuflags");
3087     if (idx && argv[idx + 1])
3088         opt_cpuflags("cpuflags", argv[idx + 1]);
3089 }
3090
3091 int main(int argc, char **argv)
3092 {
3093     OptionsContext o = { 0 };
3094     int64_t ti;
3095
3096     reset_options(&o, 0);
3097
3098     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3099     parse_loglevel(argc, argv, options);
3100
3101     if(argc>1 && !strcmp(argv[1], "-d")){
3102         run_as_daemon=1;
3103         av_log_set_callback(log_callback_null);
3104         argc--;
3105         argv++;
3106     }
3107
3108     avcodec_register_all();
3109 #if CONFIG_AVDEVICE
3110     avdevice_register_all();
3111 #endif
3112     avfilter_register_all();
3113     av_register_all();
3114     avformat_network_init();
3115
3116     show_banner(argc, argv, options);
3117
3118     term_init();
3119
3120     parse_cpuflags(argc, argv, options);
3121
3122     /* parse options */
3123     parse_options(&o, argc, argv, options, opt_output_file);
3124
3125     if (nb_output_files <= 0 && nb_input_files == 0) {
3126         show_usage();
3127         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3128         exit_program(1);
3129     }
3130
3131     /* file converter / grab */
3132     if (nb_output_files <= 0) {
3133         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3134         exit_program(1);
3135     }
3136
3137 //     if (nb_input_files == 0) {
3138 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3139 //         exit_program(1);
3140 //     }
3141
3142     current_time = ti = getutime();
3143     if (transcode() < 0)
3144         exit_program(1);
3145     ti = getutime() - ti;
3146     if (do_benchmark) {
3147         int maxrss = getmaxrss() / 1024;
3148         printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss);
3149     }
3150
3151     exit_program(0);
3152     return 0;
3153 }