ffmpeg: update error message, and make use of av_err2str() to simplify
[ffmpeg.git] / ffmpeg.c
1 /*
2  * Copyright (c) 2000-2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * multimedia converter based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <ctype.h>
28 #include <string.h>
29 #include <math.h>
30 #include <stdlib.h>
31 #include <errno.h>
32 #include <limits.h>
33 #if HAVE_ISATTY
34 #if HAVE_IO_H
35 #include <io.h>
36 #endif
37 #if HAVE_UNISTD_H
38 #include <unistd.h>
39 #endif
40 #endif
41 #include "libavformat/avformat.h"
42 #include "libavdevice/avdevice.h"
43 #include "libswscale/swscale.h"
44 #include "libswresample/swresample.h"
45 #include "libavutil/opt.h"
46 #include "libavutil/channel_layout.h"
47 #include "libavutil/parseutils.h"
48 #include "libavutil/samplefmt.h"
49 #include "libavutil/colorspace.h"
50 #include "libavutil/fifo.h"
51 #include "libavutil/intreadwrite.h"
52 #include "libavutil/dict.h"
53 #include "libavutil/mathematics.h"
54 #include "libavutil/pixdesc.h"
55 #include "libavutil/avstring.h"
56 #include "libavutil/libm.h"
57 #include "libavutil/imgutils.h"
58 #include "libavutil/timestamp.h"
59 #include "libavutil/bprint.h"
60 #include "libavutil/time.h"
61 #include "libavformat/os_support.h"
62
63 #include "libavformat/ffm.h" // not public API
64
65 # include "libavfilter/avcodec.h"
66 # include "libavfilter/avfilter.h"
67 # include "libavfilter/avfiltergraph.h"
68 # include "libavfilter/buffersrc.h"
69 # include "libavfilter/buffersink.h"
70
71 #if HAVE_SYS_RESOURCE_H
72 #include <sys/time.h>
73 #include <sys/types.h>
74 #include <sys/resource.h>
75 #elif HAVE_GETPROCESSTIMES
76 #include <windows.h>
77 #endif
78 #if HAVE_GETPROCESSMEMORYINFO
79 #include <windows.h>
80 #include <psapi.h>
81 #endif
82
83 #if HAVE_SYS_SELECT_H
84 #include <sys/select.h>
85 #endif
86
87 #if HAVE_TERMIOS_H
88 #include <fcntl.h>
89 #include <sys/ioctl.h>
90 #include <sys/time.h>
91 #include <termios.h>
92 #elif HAVE_KBHIT
93 #include <conio.h>
94 #endif
95
96 #if HAVE_PTHREADS
97 #include <pthread.h>
98 #endif
99
100 #include <time.h>
101
102 #include "ffmpeg.h"
103 #include "cmdutils.h"
104
105 #include "libavutil/avassert.h"
106
107 const char program_name[] = "ffmpeg";
108 const int program_birth_year = 2000;
109
110 static FILE *vstats_file;
111
112 const char *const forced_keyframes_const_names[] = {
113     "n",
114     "n_forced",
115     "prev_forced_n",
116     "prev_forced_t",
117     "t",
118     NULL
119 };
120
121 static void do_video_stats(OutputStream *ost, int frame_size);
122 static int64_t getutime(void);
123 static int64_t getmaxrss(void);
124
125 static int run_as_daemon  = 0;
126 static int64_t video_size = 0;
127 static int64_t audio_size = 0;
128 static int64_t subtitle_size = 0;
129 static int64_t extra_size = 0;
130 static int nb_frames_dup = 0;
131 static int nb_frames_drop = 0;
132 static int64_t decode_error_stat[2];
133
134 static int current_time;
135 AVIOContext *progress_avio = NULL;
136
137 static uint8_t *subtitle_out;
138
139 #if HAVE_PTHREADS
140 /* signal to input threads that they should exit; set by the main thread */
141 static int transcoding_finished;
142 #endif
143
144 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
145
146 InputStream **input_streams = NULL;
147 int        nb_input_streams = 0;
148 InputFile   **input_files   = NULL;
149 int        nb_input_files   = 0;
150
151 OutputStream **output_streams = NULL;
152 int         nb_output_streams = 0;
153 OutputFile   **output_files   = NULL;
154 int         nb_output_files   = 0;
155
156 FilterGraph **filtergraphs;
157 int        nb_filtergraphs;
158
159 #if HAVE_TERMIOS_H
160
161 /* init terminal so that we can grab keys */
162 static struct termios oldtty;
163 static int restore_tty;
164 #endif
165
166
167 /* sub2video hack:
168    Convert subtitles to video with alpha to insert them in filter graphs.
169    This is a temporary solution until libavfilter gets real subtitles support.
170  */
171
172 static int sub2video_get_blank_frame(InputStream *ist)
173 {
174     int ret;
175     AVFrame *frame = ist->sub2video.frame;
176
177     av_frame_unref(frame);
178     ist->sub2video.frame->width  = ist->sub2video.w;
179     ist->sub2video.frame->height = ist->sub2video.h;
180     ist->sub2video.frame->format = AV_PIX_FMT_RGB32;
181     if ((ret = av_frame_get_buffer(frame, 32)) < 0)
182         return ret;
183     memset(frame->data[0], 0, frame->height * frame->linesize[0]);
184     return 0;
185 }
186
187 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
188                                 AVSubtitleRect *r)
189 {
190     uint32_t *pal, *dst2;
191     uint8_t *src, *src2;
192     int x, y;
193
194     if (r->type != SUBTITLE_BITMAP) {
195         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
196         return;
197     }
198     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
199         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
200         return;
201     }
202
203     dst += r->y * dst_linesize + r->x * 4;
204     src = r->pict.data[0];
205     pal = (uint32_t *)r->pict.data[1];
206     for (y = 0; y < r->h; y++) {
207         dst2 = (uint32_t *)dst;
208         src2 = src;
209         for (x = 0; x < r->w; x++)
210             *(dst2++) = pal[*(src2++)];
211         dst += dst_linesize;
212         src += r->pict.linesize[0];
213     }
214 }
215
216 static void sub2video_push_ref(InputStream *ist, int64_t pts)
217 {
218     AVFrame *frame = ist->sub2video.frame;
219     int i;
220
221     av_assert1(frame->data[0]);
222     ist->sub2video.last_pts = frame->pts = pts;
223     for (i = 0; i < ist->nb_filters; i++)
224         av_buffersrc_add_frame_flags(ist->filters[i]->filter, frame,
225                                      AV_BUFFERSRC_FLAG_KEEP_REF |
226                                      AV_BUFFERSRC_FLAG_PUSH);
227 }
228
229 static void sub2video_update(InputStream *ist, AVSubtitle *sub)
230 {
231     int w = ist->sub2video.w, h = ist->sub2video.h;
232     AVFrame *frame = ist->sub2video.frame;
233     int8_t *dst;
234     int     dst_linesize;
235     int num_rects, i;
236     int64_t pts, end_pts;
237
238     if (!frame)
239         return;
240     if (sub) {
241         pts       = av_rescale_q(sub->pts + sub->start_display_time * 1000,
242                                  AV_TIME_BASE_Q, ist->st->time_base);
243         end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000,
244                                  AV_TIME_BASE_Q, ist->st->time_base);
245         num_rects = sub->num_rects;
246     } else {
247         pts       = ist->sub2video.end_pts;
248         end_pts   = INT64_MAX;
249         num_rects = 0;
250     }
251     if (sub2video_get_blank_frame(ist) < 0) {
252         av_log(ist->st->codec, AV_LOG_ERROR,
253                "Impossible to get a blank canvas.\n");
254         return;
255     }
256     dst          = frame->data    [0];
257     dst_linesize = frame->linesize[0];
258     for (i = 0; i < num_rects; i++)
259         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
260     sub2video_push_ref(ist, pts);
261     ist->sub2video.end_pts = end_pts;
262 }
263
264 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
265 {
266     InputFile *infile = input_files[ist->file_index];
267     int i, j, nb_reqs;
268     int64_t pts2;
269
270     /* When a frame is read from a file, examine all sub2video streams in
271        the same file and send the sub2video frame again. Otherwise, decoded
272        video frames could be accumulating in the filter graph while a filter
273        (possibly overlay) is desperately waiting for a subtitle frame. */
274     for (i = 0; i < infile->nb_streams; i++) {
275         InputStream *ist2 = input_streams[infile->ist_index + i];
276         if (!ist2->sub2video.frame)
277             continue;
278         /* subtitles seem to be usually muxed ahead of other streams;
279            if not, substracting a larger time here is necessary */
280         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
281         /* do not send the heartbeat frame if the subtitle is already ahead */
282         if (pts2 <= ist2->sub2video.last_pts)
283             continue;
284         if (pts2 >= ist2->sub2video.end_pts || !ist2->sub2video.frame->data[0])
285             sub2video_update(ist2, NULL);
286         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
287             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
288         if (nb_reqs)
289             sub2video_push_ref(ist2, pts2);
290     }
291 }
292
293 static void sub2video_flush(InputStream *ist)
294 {
295     int i;
296
297     for (i = 0; i < ist->nb_filters; i++)
298         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
299 }
300
301 /* end of sub2video hack */
302
303 void term_exit(void)
304 {
305     av_log(NULL, AV_LOG_QUIET, "%s", "");
306 #if HAVE_TERMIOS_H
307     if(restore_tty)
308         tcsetattr (0, TCSANOW, &oldtty);
309 #endif
310 }
311
312 static volatile int received_sigterm = 0;
313 static volatile int received_nb_signals = 0;
314
315 static void
316 sigterm_handler(int sig)
317 {
318     received_sigterm = sig;
319     received_nb_signals++;
320     term_exit();
321     if(received_nb_signals > 3)
322         exit(123);
323 }
324
325 void term_init(void)
326 {
327 #if HAVE_TERMIOS_H
328     if(!run_as_daemon){
329         struct termios tty;
330         int istty = 1;
331 #if HAVE_ISATTY
332         istty = isatty(0) && isatty(2);
333 #endif
334         if (istty && tcgetattr (0, &tty) == 0) {
335             oldtty = tty;
336             restore_tty = 1;
337             atexit(term_exit);
338
339             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
340                              |INLCR|IGNCR|ICRNL|IXON);
341             tty.c_oflag |= OPOST;
342             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
343             tty.c_cflag &= ~(CSIZE|PARENB);
344             tty.c_cflag |= CS8;
345             tty.c_cc[VMIN] = 1;
346             tty.c_cc[VTIME] = 0;
347
348             tcsetattr (0, TCSANOW, &tty);
349         }
350         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
351     }
352 #endif
353     avformat_network_deinit();
354
355     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
356     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
357 #ifdef SIGXCPU
358     signal(SIGXCPU, sigterm_handler);
359 #endif
360 }
361
362 /* read a key without blocking */
363 static int read_key(void)
364 {
365     unsigned char ch;
366 #if HAVE_TERMIOS_H
367     int n = 1;
368     struct timeval tv;
369     fd_set rfds;
370
371     FD_ZERO(&rfds);
372     FD_SET(0, &rfds);
373     tv.tv_sec = 0;
374     tv.tv_usec = 0;
375     n = select(1, &rfds, NULL, NULL, &tv);
376     if (n > 0) {
377         n = read(0, &ch, 1);
378         if (n == 1)
379             return ch;
380
381         return n;
382     }
383 #elif HAVE_KBHIT
384 #    if HAVE_PEEKNAMEDPIPE
385     static int is_pipe;
386     static HANDLE input_handle;
387     DWORD dw, nchars;
388     if(!input_handle){
389         input_handle = GetStdHandle(STD_INPUT_HANDLE);
390         is_pipe = !GetConsoleMode(input_handle, &dw);
391     }
392
393     if (stdin->_cnt > 0) {
394         read(0, &ch, 1);
395         return ch;
396     }
397     if (is_pipe) {
398         /* When running under a GUI, you will end here. */
399         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
400             // input pipe may have been closed by the program that ran ffmpeg
401             return -1;
402         }
403         //Read it
404         if(nchars != 0) {
405             read(0, &ch, 1);
406             return ch;
407         }else{
408             return -1;
409         }
410     }
411 #    endif
412     if(kbhit())
413         return(getch());
414 #endif
415     return -1;
416 }
417
418 static int decode_interrupt_cb(void *ctx)
419 {
420     return received_nb_signals > 1;
421 }
422
423 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
424
425 static void exit_program(void)
426 {
427     int i, j;
428
429     if (do_benchmark) {
430         int maxrss = getmaxrss() / 1024;
431         printf("bench: maxrss=%ikB\n", maxrss);
432     }
433
434     for (i = 0; i < nb_filtergraphs; i++) {
435         avfilter_graph_free(&filtergraphs[i]->graph);
436         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
437             av_freep(&filtergraphs[i]->inputs[j]->name);
438             av_freep(&filtergraphs[i]->inputs[j]);
439         }
440         av_freep(&filtergraphs[i]->inputs);
441         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
442             av_freep(&filtergraphs[i]->outputs[j]->name);
443             av_freep(&filtergraphs[i]->outputs[j]);
444         }
445         av_freep(&filtergraphs[i]->outputs);
446         av_freep(&filtergraphs[i]->graph_desc);
447         av_freep(&filtergraphs[i]);
448     }
449     av_freep(&filtergraphs);
450
451     av_freep(&subtitle_out);
452
453     /* close files */
454     for (i = 0; i < nb_output_files; i++) {
455         AVFormatContext *s = output_files[i]->ctx;
456         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
457             avio_close(s->pb);
458         avformat_free_context(s);
459         av_dict_free(&output_files[i]->opts);
460         av_freep(&output_files[i]);
461     }
462     for (i = 0; i < nb_output_streams; i++) {
463         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
464         while (bsfc) {
465             AVBitStreamFilterContext *next = bsfc->next;
466             av_bitstream_filter_close(bsfc);
467             bsfc = next;
468         }
469         output_streams[i]->bitstream_filters = NULL;
470         avcodec_free_frame(&output_streams[i]->filtered_frame);
471
472         av_freep(&output_streams[i]->forced_keyframes);
473         av_expr_free(output_streams[i]->forced_keyframes_pexpr);
474         av_freep(&output_streams[i]->avfilter);
475         av_freep(&output_streams[i]->logfile_prefix);
476         av_freep(&output_streams[i]);
477     }
478     for (i = 0; i < nb_input_files; i++) {
479         avformat_close_input(&input_files[i]->ctx);
480         av_freep(&input_files[i]);
481     }
482     for (i = 0; i < nb_input_streams; i++) {
483         av_frame_free(&input_streams[i]->decoded_frame);
484         av_frame_free(&input_streams[i]->filter_frame);
485         av_dict_free(&input_streams[i]->opts);
486         avsubtitle_free(&input_streams[i]->prev_sub.subtitle);
487         av_frame_free(&input_streams[i]->sub2video.frame);
488         av_freep(&input_streams[i]->filters);
489         av_freep(&input_streams[i]);
490     }
491
492     if (vstats_file)
493         fclose(vstats_file);
494     av_free(vstats_filename);
495
496     av_freep(&input_streams);
497     av_freep(&input_files);
498     av_freep(&output_streams);
499     av_freep(&output_files);
500
501     uninit_opts();
502
503     avfilter_uninit();
504     avformat_network_deinit();
505
506     if (received_sigterm) {
507         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
508                (int) received_sigterm);
509     }
510 }
511
512 void assert_avoptions(AVDictionary *m)
513 {
514     AVDictionaryEntry *t;
515     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
516         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
517         exit(1);
518     }
519 }
520
521 static void abort_codec_experimental(AVCodec *c, int encoder)
522 {
523     exit(1);
524 }
525
526 static void update_benchmark(const char *fmt, ...)
527 {
528     if (do_benchmark_all) {
529         int64_t t = getutime();
530         va_list va;
531         char buf[1024];
532
533         if (fmt) {
534             va_start(va, fmt);
535             vsnprintf(buf, sizeof(buf), fmt, va);
536             va_end(va);
537             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
538         }
539         current_time = t;
540     }
541 }
542
543 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
544 {
545     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
546     AVCodecContext          *avctx = ost->st->codec;
547     int ret;
548
549     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
550         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
551         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
552
553     if ((avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) && pkt->dts != AV_NOPTS_VALUE) {
554         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
555         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
556             av_log(s, max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG,
557                    "st:%d PTS: %"PRId64" DTS: %"PRId64" < %"PRId64" invalid, clipping\n", pkt->stream_index, pkt->pts, pkt->dts, max);
558             if(pkt->pts >= pkt->dts)
559                 pkt->pts = FFMAX(pkt->pts, max);
560             pkt->dts = max;
561         }
562     }
563
564     /*
565      * Audio encoders may split the packets --  #frames in != #packets out.
566      * But there is no reordering, so we can limit the number of output packets
567      * by simply dropping them here.
568      * Counting encoded video frames needs to be done separately because of
569      * reordering, see do_video_out()
570      */
571     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
572         if (ost->frame_number >= ost->max_frames) {
573             av_free_packet(pkt);
574             return;
575         }
576         ost->frame_number++;
577     }
578
579     while (bsfc) {
580         AVPacket new_pkt = *pkt;
581         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
582                                            &new_pkt.data, &new_pkt.size,
583                                            pkt->data, pkt->size,
584                                            pkt->flags & AV_PKT_FLAG_KEY);
585         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
586             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
587             if(t) {
588                 memcpy(t, new_pkt.data, new_pkt.size);
589                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
590                 new_pkt.data = t;
591                 new_pkt.buf = NULL;
592                 a = 1;
593             } else
594                 a = AVERROR(ENOMEM);
595         }
596         if (a > 0) {
597             av_free_packet(pkt);
598             new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
599                                            av_buffer_default_free, NULL, 0);
600             if (!new_pkt.buf)
601                 exit(1);
602         } else if (a < 0) {
603             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
604                    bsfc->filter->name, pkt->stream_index,
605                    avctx->codec ? avctx->codec->name : "copy");
606             print_error("", a);
607             if (exit_on_error)
608                 exit(1);
609         }
610         *pkt = new_pkt;
611
612         bsfc = bsfc->next;
613     }
614
615     pkt->stream_index = ost->index;
616
617     if (debug_ts) {
618         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
619                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
620                 av_get_media_type_string(ost->st->codec->codec_type),
621                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
622                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
623                 pkt->size
624               );
625     }
626
627     ret = av_interleaved_write_frame(s, pkt);
628     if (ret < 0) {
629         print_error("av_interleaved_write_frame()", ret);
630         exit(1);
631     }
632 }
633
634 static void close_output_stream(OutputStream *ost)
635 {
636     OutputFile *of = output_files[ost->file_index];
637
638     ost->finished = 1;
639     if (of->shortest) {
640         int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, AV_TIME_BASE_Q);
641         of->recording_time = FFMIN(of->recording_time, end);
642     }
643 }
644
645 static int check_recording_time(OutputStream *ost)
646 {
647     OutputFile *of = output_files[ost->file_index];
648
649     if (of->recording_time != INT64_MAX &&
650         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
651                       AV_TIME_BASE_Q) >= 0) {
652         close_output_stream(ost);
653         return 0;
654     }
655     return 1;
656 }
657
658 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
659                          AVFrame *frame)
660 {
661     AVCodecContext *enc = ost->st->codec;
662     AVPacket pkt;
663     int got_packet = 0;
664
665     av_init_packet(&pkt);
666     pkt.data = NULL;
667     pkt.size = 0;
668
669     if (!check_recording_time(ost))
670         return;
671
672     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
673         frame->pts = ost->sync_opts;
674     ost->sync_opts = frame->pts + frame->nb_samples;
675
676     av_assert0(pkt.size || !pkt.data);
677     update_benchmark(NULL);
678     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
679         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
680         exit(1);
681     }
682     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
683
684     if (got_packet) {
685         if (pkt.pts != AV_NOPTS_VALUE)
686             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
687         if (pkt.dts != AV_NOPTS_VALUE)
688             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
689         if (pkt.duration > 0)
690             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
691
692         if (debug_ts) {
693             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
694                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
695                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
696                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
697         }
698
699         audio_size += pkt.size;
700         write_frame(s, &pkt, ost);
701
702         av_free_packet(&pkt);
703     }
704 }
705
706 static void do_subtitle_out(AVFormatContext *s,
707                             OutputStream *ost,
708                             InputStream *ist,
709                             AVSubtitle *sub)
710 {
711     int subtitle_out_max_size = 1024 * 1024;
712     int subtitle_out_size, nb, i;
713     AVCodecContext *enc;
714     AVPacket pkt;
715     int64_t pts;
716
717     if (sub->pts == AV_NOPTS_VALUE) {
718         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
719         if (exit_on_error)
720             exit(1);
721         return;
722     }
723
724     enc = ost->st->codec;
725
726     if (!subtitle_out) {
727         subtitle_out = av_malloc(subtitle_out_max_size);
728     }
729
730     /* Note: DVB subtitle need one packet to draw them and one other
731        packet to clear them */
732     /* XXX: signal it in the codec context ? */
733     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
734         nb = 2;
735     else
736         nb = 1;
737
738     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
739     pts = sub->pts - output_files[ost->file_index]->start_time;
740     for (i = 0; i < nb; i++) {
741         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
742         if (!check_recording_time(ost))
743             return;
744
745         sub->pts = pts;
746         // start_display_time is required to be 0
747         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
748         sub->end_display_time  -= sub->start_display_time;
749         sub->start_display_time = 0;
750         if (i == 1)
751             sub->num_rects = 0;
752         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
753                                                     subtitle_out_max_size, sub);
754         if (subtitle_out_size < 0) {
755             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
756             exit(1);
757         }
758
759         av_init_packet(&pkt);
760         pkt.data = subtitle_out;
761         pkt.size = subtitle_out_size;
762         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
763         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
764         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
765             /* XXX: the pts correction is handled here. Maybe handling
766                it in the codec would be better */
767             if (i == 0)
768                 pkt.pts += 90 * sub->start_display_time;
769             else
770                 pkt.pts += 90 * sub->end_display_time;
771         }
772         subtitle_size += pkt.size;
773         write_frame(s, &pkt, ost);
774     }
775 }
776
777 static void do_video_out(AVFormatContext *s,
778                          OutputStream *ost,
779                          AVFrame *in_picture)
780 {
781     int ret, format_video_sync;
782     AVPacket pkt;
783     AVCodecContext *enc = ost->st->codec;
784     int nb_frames, i;
785     double sync_ipts, delta;
786     double duration = 0;
787     int frame_size = 0;
788     InputStream *ist = NULL;
789
790     if (ost->source_index >= 0)
791         ist = input_streams[ost->source_index];
792
793     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
794         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
795
796     sync_ipts = in_picture->pts;
797     delta = sync_ipts - ost->sync_opts + duration;
798
799     /* by default, we output a single frame */
800     nb_frames = 1;
801
802     format_video_sync = video_sync_method;
803     if (format_video_sync == VSYNC_AUTO)
804         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
805
806     switch (format_video_sync) {
807     case VSYNC_CFR:
808         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
809         if (delta < -1.1)
810             nb_frames = 0;
811         else if (delta > 1.1)
812             nb_frames = lrintf(delta);
813         break;
814     case VSYNC_VFR:
815         if (delta <= -0.6)
816             nb_frames = 0;
817         else if (delta > 0.6)
818             ost->sync_opts = lrint(sync_ipts);
819         break;
820     case VSYNC_DROP:
821     case VSYNC_PASSTHROUGH:
822         ost->sync_opts = lrint(sync_ipts);
823         break;
824     default:
825         av_assert0(0);
826     }
827
828     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
829     if (nb_frames == 0) {
830         nb_frames_drop++;
831         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
832         return;
833     } else if (nb_frames > 1) {
834         if (nb_frames > dts_error_threshold * 30) {
835             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
836             nb_frames_drop++;
837             return;
838         }
839         nb_frames_dup += nb_frames - 1;
840         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
841     }
842
843   /* duplicates frame if needed */
844   for (i = 0; i < nb_frames; i++) {
845     av_init_packet(&pkt);
846     pkt.data = NULL;
847     pkt.size = 0;
848
849     in_picture->pts = ost->sync_opts;
850
851     if (!check_recording_time(ost))
852         return;
853
854     if (s->oformat->flags & AVFMT_RAWPICTURE &&
855         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
856         /* raw pictures are written as AVPicture structure to
857            avoid any copies. We support temporarily the older
858            method. */
859         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
860         enc->coded_frame->top_field_first  = in_picture->top_field_first;
861         if (enc->coded_frame->interlaced_frame)
862             enc->field_order = enc->coded_frame->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
863         else
864             enc->field_order = AV_FIELD_PROGRESSIVE;
865         pkt.data   = (uint8_t *)in_picture;
866         pkt.size   =  sizeof(AVPicture);
867         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
868         pkt.flags |= AV_PKT_FLAG_KEY;
869
870         video_size += pkt.size;
871         write_frame(s, &pkt, ost);
872     } else {
873         int got_packet, forced_keyframe = 0;
874         double pts_time;
875
876         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME) &&
877             ost->top_field_first >= 0)
878             in_picture->top_field_first = !!ost->top_field_first;
879
880         if (in_picture->interlaced_frame) {
881             if (enc->codec->id == AV_CODEC_ID_MJPEG)
882                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
883             else
884                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
885         } else
886             enc->field_order = AV_FIELD_PROGRESSIVE;
887
888         in_picture->quality = ost->st->codec->global_quality;
889         if (!enc->me_threshold)
890             in_picture->pict_type = 0;
891
892         pts_time = in_picture->pts != AV_NOPTS_VALUE ?
893             in_picture->pts * av_q2d(enc->time_base) : NAN;
894         if (ost->forced_kf_index < ost->forced_kf_count &&
895             in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
896             ost->forced_kf_index++;
897             forced_keyframe = 1;
898         } else if (ost->forced_keyframes_pexpr) {
899             double res;
900             ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
901             res = av_expr_eval(ost->forced_keyframes_pexpr,
902                                ost->forced_keyframes_expr_const_values, NULL);
903             av_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
904                     ost->forced_keyframes_expr_const_values[FKF_N],
905                     ost->forced_keyframes_expr_const_values[FKF_N_FORCED],
906                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N],
907                     ost->forced_keyframes_expr_const_values[FKF_T],
908                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T],
909                     res);
910             if (res) {
911                 forced_keyframe = 1;
912                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] =
913                     ost->forced_keyframes_expr_const_values[FKF_N];
914                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] =
915                     ost->forced_keyframes_expr_const_values[FKF_T];
916                 ost->forced_keyframes_expr_const_values[FKF_N_FORCED] += 1;
917             }
918
919             ost->forced_keyframes_expr_const_values[FKF_N] += 1;
920         }
921         if (forced_keyframe) {
922             in_picture->pict_type = AV_PICTURE_TYPE_I;
923             av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
924         }
925
926         update_benchmark(NULL);
927         ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
928         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
929         if (ret < 0) {
930             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
931             exit(1);
932         }
933
934         if (got_packet) {
935             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
936                 pkt.pts = ost->sync_opts;
937
938             if (pkt.pts != AV_NOPTS_VALUE)
939                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
940             if (pkt.dts != AV_NOPTS_VALUE)
941                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
942
943             if (debug_ts) {
944                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
945                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
946                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
947                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
948             }
949
950             frame_size = pkt.size;
951             video_size += pkt.size;
952             write_frame(s, &pkt, ost);
953             av_free_packet(&pkt);
954
955             /* if two pass, output log */
956             if (ost->logfile && enc->stats_out) {
957                 fprintf(ost->logfile, "%s", enc->stats_out);
958             }
959         }
960     }
961     ost->sync_opts++;
962     /*
963      * For video, number of frames in == number of packets out.
964      * But there may be reordering, so we can't throw away frames on encoder
965      * flush, we need to limit them here, before they go into encoder.
966      */
967     ost->frame_number++;
968
969     if (vstats_filename && frame_size)
970         do_video_stats(ost, frame_size);
971   }
972 }
973
974 static double psnr(double d)
975 {
976     return -10.0 * log(d) / log(10.0);
977 }
978
979 static void do_video_stats(OutputStream *ost, int frame_size)
980 {
981     AVCodecContext *enc;
982     int frame_number;
983     double ti1, bitrate, avg_bitrate;
984
985     /* this is executed just the first time do_video_stats is called */
986     if (!vstats_file) {
987         vstats_file = fopen(vstats_filename, "w");
988         if (!vstats_file) {
989             perror("fopen");
990             exit(1);
991         }
992     }
993
994     enc = ost->st->codec;
995     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
996         frame_number = ost->st->nb_frames;
997         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
998         if (enc->flags&CODEC_FLAG_PSNR)
999             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1000
1001         fprintf(vstats_file,"f_size= %6d ", frame_size);
1002         /* compute pts value */
1003         ti1 = ost->st->pts.val * av_q2d(enc->time_base);
1004         if (ti1 < 0.01)
1005             ti1 = 0.01;
1006
1007         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1008         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1009         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1010                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1011         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1012     }
1013 }
1014
1015 /**
1016  * Get and encode new output from any of the filtergraphs, without causing
1017  * activity.
1018  *
1019  * @return  0 for success, <0 for severe errors
1020  */
1021 static int reap_filters(void)
1022 {
1023     AVFrame *filtered_frame = NULL;
1024     int i;
1025     int64_t frame_pts;
1026
1027     /* Reap all buffers present in the buffer sinks */
1028     for (i = 0; i < nb_output_streams; i++) {
1029         OutputStream *ost = output_streams[i];
1030         OutputFile    *of = output_files[ost->file_index];
1031         int ret = 0;
1032
1033         if (!ost->filter)
1034             continue;
1035
1036         if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1037             return AVERROR(ENOMEM);
1038         } else
1039             avcodec_get_frame_defaults(ost->filtered_frame);
1040         filtered_frame = ost->filtered_frame;
1041
1042         while (1) {
1043             ret = av_buffersink_get_frame_flags(ost->filter->filter, filtered_frame,
1044                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1045             if (ret < 0) {
1046                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1047                     av_log(NULL, AV_LOG_WARNING,
1048                            "Error in av_buffersink_get_frame_flags(): %s\n", av_err2str(ret));
1049                 }
1050                 break;
1051             }
1052             frame_pts = AV_NOPTS_VALUE;
1053             if (filtered_frame->pts != AV_NOPTS_VALUE) {
1054                 filtered_frame->pts = frame_pts = av_rescale_q(filtered_frame->pts,
1055                                                 ost->filter->filter->inputs[0]->time_base,
1056                                                 ost->st->codec->time_base) -
1057                                     av_rescale_q(of->start_time,
1058                                                 AV_TIME_BASE_Q,
1059                                                 ost->st->codec->time_base);
1060
1061                 if (of->start_time && filtered_frame->pts < 0) {
1062                     av_frame_unref(filtered_frame);
1063                     continue;
1064                 }
1065             }
1066             //if (ost->source_index >= 0)
1067             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1068
1069
1070             switch (ost->filter->filter->inputs[0]->type) {
1071             case AVMEDIA_TYPE_VIDEO:
1072                 filtered_frame->pts = frame_pts;
1073                 if (!ost->frame_aspect_ratio.num)
1074                     ost->st->codec->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
1075
1076                 do_video_out(of->ctx, ost, filtered_frame);
1077                 break;
1078             case AVMEDIA_TYPE_AUDIO:
1079                 filtered_frame->pts = frame_pts;
1080                 if (!(ost->st->codec->codec->capabilities & CODEC_CAP_PARAM_CHANGE) &&
1081                     ost->st->codec->channels != av_frame_get_channels(filtered_frame)) {
1082                     av_log(NULL, AV_LOG_ERROR,
1083                            "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
1084                     break;
1085                 }
1086                 do_audio_out(of->ctx, ost, filtered_frame);
1087                 break;
1088             default:
1089                 // TODO support subtitle filters
1090                 av_assert0(0);
1091             }
1092
1093             av_frame_unref(filtered_frame);
1094         }
1095     }
1096
1097     return 0;
1098 }
1099
1100 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1101 {
1102     char buf[1024];
1103     AVBPrint buf_script;
1104     OutputStream *ost;
1105     AVFormatContext *oc;
1106     int64_t total_size;
1107     AVCodecContext *enc;
1108     int frame_number, vid, i;
1109     double bitrate;
1110     int64_t pts = INT64_MIN;
1111     static int64_t last_time = -1;
1112     static int qp_histogram[52];
1113     int hours, mins, secs, us;
1114
1115     if (!print_stats && !is_last_report && !progress_avio)
1116         return;
1117
1118     if (!is_last_report) {
1119         if (last_time == -1) {
1120             last_time = cur_time;
1121             return;
1122         }
1123         if ((cur_time - last_time) < 500000)
1124             return;
1125         last_time = cur_time;
1126     }
1127
1128
1129     oc = output_files[0]->ctx;
1130
1131     total_size = avio_size(oc->pb);
1132     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1133         total_size = avio_tell(oc->pb);
1134
1135     buf[0] = '\0';
1136     vid = 0;
1137     av_bprint_init(&buf_script, 0, 1);
1138     for (i = 0; i < nb_output_streams; i++) {
1139         float q = -1;
1140         ost = output_streams[i];
1141         enc = ost->st->codec;
1142         if (!ost->stream_copy && enc->coded_frame)
1143             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1144         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1145             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1146             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1147                        ost->file_index, ost->index, q);
1148         }
1149         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1150             float fps, t = (cur_time-timer_start) / 1000000.0;
1151
1152             frame_number = ost->frame_number;
1153             fps = t > 1 ? frame_number / t : 0;
1154             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1155                      frame_number, fps < 9.95, fps, q);
1156             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1157             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1158             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1159                        ost->file_index, ost->index, q);
1160             if (is_last_report)
1161                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1162             if (qp_hist) {
1163                 int j;
1164                 int qp = lrintf(q);
1165                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1166                     qp_histogram[qp]++;
1167                 for (j = 0; j < 32; j++)
1168                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1169             }
1170             if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1171                 int j;
1172                 double error, error_sum = 0;
1173                 double scale, scale_sum = 0;
1174                 double p;
1175                 char type[3] = { 'Y','U','V' };
1176                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1177                 for (j = 0; j < 3; j++) {
1178                     if (is_last_report) {
1179                         error = enc->error[j];
1180                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1181                     } else {
1182                         error = enc->coded_frame->error[j];
1183                         scale = enc->width * enc->height * 255.0 * 255.0;
1184                     }
1185                     if (j)
1186                         scale /= 4;
1187                     error_sum += error;
1188                     scale_sum += scale;
1189                     p = psnr(error / scale);
1190                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1191                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1192                                ost->file_index, ost->index, type[j] | 32, p);
1193                 }
1194                 p = psnr(error_sum / scale_sum);
1195                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1196                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1197                            ost->file_index, ost->index, p);
1198             }
1199             vid = 1;
1200         }
1201         /* compute min output value */
1202         if ((is_last_report || !ost->finished) && ost->st->pts.val != AV_NOPTS_VALUE)
1203             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1204                                           ost->st->time_base, AV_TIME_BASE_Q));
1205     }
1206
1207     secs = pts / AV_TIME_BASE;
1208     us = pts % AV_TIME_BASE;
1209     mins = secs / 60;
1210     secs %= 60;
1211     hours = mins / 60;
1212     mins %= 60;
1213
1214     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1215
1216     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1217                                  "size=N/A time=");
1218     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1219                                  "size=%8.0fkB time=", total_size / 1024.0);
1220     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1221              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1222              (100 * us) / AV_TIME_BASE);
1223     if (bitrate < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1224                               "bitrate=N/A");
1225     else             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1226                               "bitrate=%6.1fkbits/s", bitrate);
1227     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
1228     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1229     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1230     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1231                hours, mins, secs, us);
1232
1233     if (nb_frames_dup || nb_frames_drop)
1234         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1235                 nb_frames_dup, nb_frames_drop);
1236     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1237     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1238
1239     if (print_stats || is_last_report) {
1240         if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
1241             fprintf(stderr, "%s    \r", buf);
1242         } else
1243             av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1244
1245     fflush(stderr);
1246     }
1247
1248     if (progress_avio) {
1249         av_bprintf(&buf_script, "progress=%s\n",
1250                    is_last_report ? "end" : "continue");
1251         avio_write(progress_avio, buf_script.str,
1252                    FFMIN(buf_script.len, buf_script.size - 1));
1253         avio_flush(progress_avio);
1254         av_bprint_finalize(&buf_script, NULL);
1255         if (is_last_report) {
1256             avio_close(progress_avio);
1257             progress_avio = NULL;
1258         }
1259     }
1260
1261     if (is_last_report) {
1262         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1263         av_log(NULL, AV_LOG_INFO, "\n");
1264         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1265                video_size / 1024.0,
1266                audio_size / 1024.0,
1267                subtitle_size / 1024.0,
1268                extra_size / 1024.0,
1269                100.0 * (total_size - raw) / raw
1270         );
1271         if(video_size + audio_size + subtitle_size + extra_size == 0){
1272             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1273         }
1274     }
1275 }
1276
1277 static void flush_encoders(void)
1278 {
1279     int i, ret;
1280
1281     for (i = 0; i < nb_output_streams; i++) {
1282         OutputStream   *ost = output_streams[i];
1283         AVCodecContext *enc = ost->st->codec;
1284         AVFormatContext *os = output_files[ost->file_index]->ctx;
1285         int stop_encoding = 0;
1286
1287         if (!ost->encoding_needed)
1288             continue;
1289
1290         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1291             continue;
1292         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1293             continue;
1294
1295         for (;;) {
1296             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1297             const char *desc;
1298             int64_t *size;
1299
1300             switch (ost->st->codec->codec_type) {
1301             case AVMEDIA_TYPE_AUDIO:
1302                 encode = avcodec_encode_audio2;
1303                 desc   = "Audio";
1304                 size   = &audio_size;
1305                 break;
1306             case AVMEDIA_TYPE_VIDEO:
1307                 encode = avcodec_encode_video2;
1308                 desc   = "Video";
1309                 size   = &video_size;
1310                 break;
1311             default:
1312                 stop_encoding = 1;
1313             }
1314
1315             if (encode) {
1316                 AVPacket pkt;
1317                 int got_packet;
1318                 av_init_packet(&pkt);
1319                 pkt.data = NULL;
1320                 pkt.size = 0;
1321
1322                 update_benchmark(NULL);
1323                 ret = encode(enc, &pkt, NULL, &got_packet);
1324                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1325                 if (ret < 0) {
1326                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1327                     exit(1);
1328                 }
1329                 *size += pkt.size;
1330                 if (ost->logfile && enc->stats_out) {
1331                     fprintf(ost->logfile, "%s", enc->stats_out);
1332                 }
1333                 if (!got_packet) {
1334                     stop_encoding = 1;
1335                     break;
1336                 }
1337                 if (pkt.pts != AV_NOPTS_VALUE)
1338                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1339                 if (pkt.dts != AV_NOPTS_VALUE)
1340                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1341                 if (pkt.duration > 0)
1342                     pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1343                 write_frame(os, &pkt, ost);
1344                 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
1345                     do_video_stats(ost, pkt.size);
1346                 }
1347             }
1348
1349             if (stop_encoding)
1350                 break;
1351         }
1352     }
1353 }
1354
1355 /*
1356  * Check whether a packet from ist should be written into ost at this time
1357  */
1358 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1359 {
1360     OutputFile *of = output_files[ost->file_index];
1361     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1362
1363     if (ost->source_index != ist_index)
1364         return 0;
1365
1366     if (of->start_time && ist->pts < of->start_time)
1367         return 0;
1368
1369     return 1;
1370 }
1371
1372 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1373 {
1374     OutputFile *of = output_files[ost->file_index];
1375     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1376     AVPicture pict;
1377     AVPacket opkt;
1378
1379     av_init_packet(&opkt);
1380
1381     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1382         !ost->copy_initial_nonkeyframes)
1383         return;
1384
1385     if (!ost->frame_number && ist->pts < of->start_time &&
1386         !ost->copy_prior_start)
1387         return;
1388
1389     if (of->recording_time != INT64_MAX &&
1390         ist->pts >= of->recording_time + of->start_time) {
1391         close_output_stream(ost);
1392         return;
1393     }
1394
1395     /* force the input stream PTS */
1396     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1397         audio_size += pkt->size;
1398     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1399         video_size += pkt->size;
1400         ost->sync_opts++;
1401     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1402         subtitle_size += pkt->size;
1403     }
1404
1405     if (pkt->pts != AV_NOPTS_VALUE)
1406         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1407     else
1408         opkt.pts = AV_NOPTS_VALUE;
1409
1410     if (pkt->dts == AV_NOPTS_VALUE)
1411         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1412     else
1413         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1414     opkt.dts -= ost_tb_start_time;
1415
1416     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1417         int duration = av_get_audio_frame_duration(ist->st->codec, pkt->size);
1418         if(!duration)
1419             duration = ist->st->codec->frame_size;
1420         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1421                                                (AVRational){1, ist->st->codec->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
1422                                                ost->st->time_base) - ost_tb_start_time;
1423     }
1424
1425     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1426     opkt.flags    = pkt->flags;
1427
1428     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1429     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1430        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1431        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1432        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1433        ) {
1434         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY)) {
1435             opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1436             if (!opkt.buf)
1437                 exit(1);
1438         }
1439     } else {
1440         opkt.data = pkt->data;
1441         opkt.size = pkt->size;
1442     }
1443
1444     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1445         /* store AVPicture in AVPacket, as expected by the output format */
1446         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1447         opkt.data = (uint8_t *)&pict;
1448         opkt.size = sizeof(AVPicture);
1449         opkt.flags |= AV_PKT_FLAG_KEY;
1450     }
1451
1452     write_frame(of->ctx, &opkt, ost);
1453     ost->st->codec->frame_number++;
1454 }
1455
1456 static void rate_emu_sleep(InputStream *ist)
1457 {
1458     if (input_files[ist->file_index]->rate_emu) {
1459         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
1460         int64_t now = av_gettime() - ist->start;
1461         if (pts > now)
1462             av_usleep(pts - now);
1463     }
1464 }
1465
1466 int guess_input_channel_layout(InputStream *ist)
1467 {
1468     AVCodecContext *dec = ist->st->codec;
1469
1470     if (!dec->channel_layout) {
1471         char layout_name[256];
1472
1473         if (dec->channels > ist->guess_layout_max)
1474             return 0;
1475         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1476         if (!dec->channel_layout)
1477             return 0;
1478         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1479                                      dec->channels, dec->channel_layout);
1480         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1481                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1482     }
1483     return 1;
1484 }
1485
1486 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1487 {
1488     AVFrame *decoded_frame, *f;
1489     AVCodecContext *avctx = ist->st->codec;
1490     int i, ret, err = 0, resample_changed;
1491     AVRational decoded_frame_tb;
1492
1493     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1494         return AVERROR(ENOMEM);
1495     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1496         return AVERROR(ENOMEM);
1497     decoded_frame = ist->decoded_frame;
1498
1499     update_benchmark(NULL);
1500     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1501     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1502
1503     if (ret >= 0 && avctx->sample_rate <= 0) {
1504         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1505         ret = AVERROR_INVALIDDATA;
1506     }
1507
1508     if (*got_output || ret<0 || pkt->size)
1509         decode_error_stat[ret<0] ++;
1510
1511     if (!*got_output || ret < 0) {
1512         if (!pkt->size) {
1513             for (i = 0; i < ist->nb_filters; i++)
1514 #if 1
1515                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1516 #else
1517                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1518 #endif
1519         }
1520         return ret;
1521     }
1522
1523 #if 1
1524     /* increment next_dts to use for the case where the input stream does not
1525        have timestamps or there are multiple frames in the packet */
1526     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1527                      avctx->sample_rate;
1528     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1529                      avctx->sample_rate;
1530 #endif
1531
1532     rate_emu_sleep(ist);
1533
1534     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1535                        ist->resample_channels       != avctx->channels               ||
1536                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1537                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1538     if (resample_changed) {
1539         char layout1[64], layout2[64];
1540
1541         if (!guess_input_channel_layout(ist)) {
1542             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1543                    "layout for Input Stream #%d.%d\n", ist->file_index,
1544                    ist->st->index);
1545             exit(1);
1546         }
1547         decoded_frame->channel_layout = avctx->channel_layout;
1548
1549         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1550                                      ist->resample_channel_layout);
1551         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1552                                      decoded_frame->channel_layout);
1553
1554         av_log(NULL, AV_LOG_INFO,
1555                "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",
1556                ist->file_index, ist->st->index,
1557                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1558                ist->resample_channels, layout1,
1559                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1560                avctx->channels, layout2);
1561
1562         ist->resample_sample_fmt     = decoded_frame->format;
1563         ist->resample_sample_rate    = decoded_frame->sample_rate;
1564         ist->resample_channel_layout = decoded_frame->channel_layout;
1565         ist->resample_channels       = avctx->channels;
1566
1567         for (i = 0; i < nb_filtergraphs; i++)
1568             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1569                 FilterGraph *fg = filtergraphs[i];
1570                 int j;
1571                 if (configure_filtergraph(fg) < 0) {
1572                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1573                     exit(1);
1574                 }
1575                 for (j = 0; j < fg->nb_outputs; j++) {
1576                     OutputStream *ost = fg->outputs[j]->ost;
1577                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1578                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1579                         av_buffersink_set_frame_size(ost->filter->filter,
1580                                                      ost->st->codec->frame_size);
1581                 }
1582             }
1583     }
1584
1585     /* if the decoder provides a pts, use it instead of the last packet pts.
1586        the decoder could be delaying output by a packet or more. */
1587     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1588         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1589         decoded_frame_tb   = avctx->time_base;
1590     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1591         decoded_frame->pts = decoded_frame->pkt_pts;
1592         pkt->pts           = AV_NOPTS_VALUE;
1593         decoded_frame_tb   = ist->st->time_base;
1594     } else if (pkt->pts != AV_NOPTS_VALUE) {
1595         decoded_frame->pts = pkt->pts;
1596         pkt->pts           = AV_NOPTS_VALUE;
1597         decoded_frame_tb   = ist->st->time_base;
1598     }else {
1599         decoded_frame->pts = ist->dts;
1600         decoded_frame_tb   = AV_TIME_BASE_Q;
1601     }
1602     if (decoded_frame->pts != AV_NOPTS_VALUE)
1603         decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
1604                                               (AVRational){1, ist->st->codec->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
1605                                               (AVRational){1, ist->st->codec->sample_rate});
1606     for (i = 0; i < ist->nb_filters; i++) {
1607         if (i < ist->nb_filters - 1) {
1608             f = ist->filter_frame;
1609             err = av_frame_ref(f, decoded_frame);
1610             if (err < 0)
1611                 break;
1612         } else
1613             f = decoded_frame;
1614         err = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f,
1615                                      AV_BUFFERSRC_FLAG_PUSH);
1616         if (err < 0)
1617             break;
1618     }
1619     decoded_frame->pts = AV_NOPTS_VALUE;
1620
1621     av_frame_unref(ist->filter_frame);
1622     av_frame_unref(decoded_frame);
1623     return err < 0 ? err : ret;
1624 }
1625
1626 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1627 {
1628     AVFrame *decoded_frame, *f;
1629     void *buffer_to_free = NULL;
1630     int i, ret = 0, err = 0, resample_changed;
1631     int64_t best_effort_timestamp;
1632     AVRational *frame_sample_aspect;
1633
1634     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1635         return AVERROR(ENOMEM);
1636     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1637         return AVERROR(ENOMEM);
1638     decoded_frame = ist->decoded_frame;
1639     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1640
1641     update_benchmark(NULL);
1642     ret = avcodec_decode_video2(ist->st->codec,
1643                                 decoded_frame, got_output, pkt);
1644     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1645
1646     if (*got_output || ret<0 || pkt->size)
1647         decode_error_stat[ret<0] ++;
1648
1649     if (!*got_output || ret < 0) {
1650         if (!pkt->size) {
1651             for (i = 0; i < ist->nb_filters; i++)
1652 #if 1
1653                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1654 #else
1655                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1656 #endif
1657         }
1658         return ret;
1659     }
1660
1661     if(ist->top_field_first>=0)
1662         decoded_frame->top_field_first = ist->top_field_first;
1663
1664     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1665     if(best_effort_timestamp != AV_NOPTS_VALUE)
1666         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1667
1668     if (debug_ts) {
1669         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1670                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1671                 ist->st->index, av_ts2str(decoded_frame->pts),
1672                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1673                 best_effort_timestamp,
1674                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1675                 decoded_frame->key_frame, decoded_frame->pict_type);
1676     }
1677
1678     pkt->size = 0;
1679
1680     rate_emu_sleep(ist);
1681
1682     if (ist->st->sample_aspect_ratio.num)
1683         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1684
1685     resample_changed = ist->resample_width   != decoded_frame->width  ||
1686                        ist->resample_height  != decoded_frame->height ||
1687                        ist->resample_pix_fmt != decoded_frame->format;
1688     if (resample_changed) {
1689         av_log(NULL, AV_LOG_INFO,
1690                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1691                ist->file_index, ist->st->index,
1692                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1693                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1694
1695         ist->resample_width   = decoded_frame->width;
1696         ist->resample_height  = decoded_frame->height;
1697         ist->resample_pix_fmt = decoded_frame->format;
1698
1699         for (i = 0; i < nb_filtergraphs; i++) {
1700             if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
1701                 configure_filtergraph(filtergraphs[i]) < 0) {
1702                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1703                 exit(1);
1704             }
1705         }
1706     }
1707
1708     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1709     for (i = 0; i < ist->nb_filters; i++) {
1710         if (!frame_sample_aspect->num)
1711             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1712
1713         if (i < ist->nb_filters - 1) {
1714             f = ist->filter_frame;
1715             err = av_frame_ref(f, decoded_frame);
1716             if (err < 0)
1717                 break;
1718         } else
1719             f = decoded_frame;
1720         if(av_buffersrc_add_frame_flags(ist->filters[i]->filter, f,
1721                                         AV_BUFFERSRC_FLAG_PUSH)<0) {
1722             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
1723             exit(1);
1724         }
1725
1726     }
1727
1728     av_frame_unref(ist->filter_frame);
1729     av_frame_unref(decoded_frame);
1730     av_free(buffer_to_free);
1731     return err < 0 ? err : ret;
1732 }
1733
1734 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1735 {
1736     AVSubtitle subtitle;
1737     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1738                                           &subtitle, got_output, pkt);
1739
1740     if (*got_output || ret<0 || pkt->size)
1741         decode_error_stat[ret<0] ++;
1742
1743     if (ret < 0 || !*got_output) {
1744         if (!pkt->size)
1745             sub2video_flush(ist);
1746         return ret;
1747     }
1748
1749     if (ist->fix_sub_duration) {
1750         if (ist->prev_sub.got_output) {
1751             int end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1752                                  1000, AV_TIME_BASE);
1753             if (end < ist->prev_sub.subtitle.end_display_time) {
1754                 av_log(ist->st->codec, AV_LOG_DEBUG,
1755                        "Subtitle duration reduced from %d to %d\n",
1756                        ist->prev_sub.subtitle.end_display_time, end);
1757                 ist->prev_sub.subtitle.end_display_time = end;
1758             }
1759         }
1760         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1761         FFSWAP(int,        ret,         ist->prev_sub.ret);
1762         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1763     }
1764
1765     sub2video_update(ist, &subtitle);
1766
1767     if (!*got_output || !subtitle.num_rects)
1768         return ret;
1769
1770     rate_emu_sleep(ist);
1771
1772     for (i = 0; i < nb_output_streams; i++) {
1773         OutputStream *ost = output_streams[i];
1774
1775         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1776             continue;
1777
1778         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
1779     }
1780
1781     avsubtitle_free(&subtitle);
1782     return ret;
1783 }
1784
1785 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1786 static int output_packet(InputStream *ist, const AVPacket *pkt)
1787 {
1788     int ret = 0, i;
1789     int got_output = 0;
1790
1791     AVPacket avpkt;
1792     if (!ist->saw_first_ts) {
1793         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;
1794         ist->pts = 0;
1795         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1796             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1797             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1798         }
1799         ist->saw_first_ts = 1;
1800     }
1801
1802     if (ist->next_dts == AV_NOPTS_VALUE)
1803         ist->next_dts = ist->dts;
1804     if (ist->next_pts == AV_NOPTS_VALUE)
1805         ist->next_pts = ist->pts;
1806
1807     if (pkt == NULL) {
1808         /* EOF handling */
1809         av_init_packet(&avpkt);
1810         avpkt.data = NULL;
1811         avpkt.size = 0;
1812         goto handle_eof;
1813     } else {
1814         avpkt = *pkt;
1815     }
1816
1817     if (pkt->dts != AV_NOPTS_VALUE) {
1818         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1819         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1820             ist->next_pts = ist->pts = ist->dts;
1821     }
1822
1823     // while we have more to decode or while the decoder did output something on EOF
1824     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1825         int duration;
1826     handle_eof:
1827
1828         ist->pts = ist->next_pts;
1829         ist->dts = ist->next_dts;
1830
1831         if (avpkt.size && avpkt.size != pkt->size) {
1832             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1833                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1834             ist->showed_multi_packet_warning = 1;
1835         }
1836
1837         switch (ist->st->codec->codec_type) {
1838         case AVMEDIA_TYPE_AUDIO:
1839             ret = decode_audio    (ist, &avpkt, &got_output);
1840             break;
1841         case AVMEDIA_TYPE_VIDEO:
1842             ret = decode_video    (ist, &avpkt, &got_output);
1843             if (avpkt.duration) {
1844                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1845             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1846                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1847                 duration = ((int64_t)AV_TIME_BASE *
1848                                 ist->st->codec->time_base.num * ticks) /
1849                                 ist->st->codec->time_base.den;
1850             } else
1851                 duration = 0;
1852
1853             if(ist->dts != AV_NOPTS_VALUE && duration) {
1854                 ist->next_dts += duration;
1855             }else
1856                 ist->next_dts = AV_NOPTS_VALUE;
1857
1858             if (got_output)
1859                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1860             break;
1861         case AVMEDIA_TYPE_SUBTITLE:
1862             ret = transcode_subtitles(ist, &avpkt, &got_output);
1863             break;
1864         default:
1865             return -1;
1866         }
1867
1868         if (ret < 0)
1869             return ret;
1870
1871         avpkt.dts=
1872         avpkt.pts= AV_NOPTS_VALUE;
1873
1874         // touch data and size only if not EOF
1875         if (pkt) {
1876             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1877                 ret = avpkt.size;
1878             avpkt.data += ret;
1879             avpkt.size -= ret;
1880         }
1881         if (!got_output) {
1882             continue;
1883         }
1884     }
1885
1886     /* handle stream copy */
1887     if (!ist->decoding_needed) {
1888         rate_emu_sleep(ist);
1889         ist->dts = ist->next_dts;
1890         switch (ist->st->codec->codec_type) {
1891         case AVMEDIA_TYPE_AUDIO:
1892             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1893                              ist->st->codec->sample_rate;
1894             break;
1895         case AVMEDIA_TYPE_VIDEO:
1896             if (ist->framerate.num) {
1897                 // TODO: Remove work-around for c99-to-c89 issue 7
1898                 AVRational time_base_q = AV_TIME_BASE_Q;
1899                 int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate));
1900                 ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q);
1901             } else if (pkt->duration) {
1902                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1903             } else if(ist->st->codec->time_base.num != 0) {
1904                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1905                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1906                                   ist->st->codec->time_base.num * ticks) /
1907                                   ist->st->codec->time_base.den;
1908             }
1909             break;
1910         }
1911         ist->pts = ist->dts;
1912         ist->next_pts = ist->next_dts;
1913     }
1914     for (i = 0; pkt && i < nb_output_streams; i++) {
1915         OutputStream *ost = output_streams[i];
1916
1917         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1918             continue;
1919
1920         do_streamcopy(ist, ost, pkt);
1921     }
1922
1923     return 0;
1924 }
1925
1926 static void print_sdp(void)
1927 {
1928     char sdp[16384];
1929     int i;
1930     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1931
1932     if (!avc)
1933         exit(1);
1934     for (i = 0; i < nb_output_files; i++)
1935         avc[i] = output_files[i]->ctx;
1936
1937     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1938     printf("SDP:\n%s\n", sdp);
1939     fflush(stdout);
1940     av_freep(&avc);
1941 }
1942
1943 static int init_input_stream(int ist_index, char *error, int error_len)
1944 {
1945     int ret;
1946     InputStream *ist = input_streams[ist_index];
1947
1948     if (ist->decoding_needed) {
1949         AVCodec *codec = ist->dec;
1950         if (!codec) {
1951             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1952                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1953             return AVERROR(EINVAL);
1954         }
1955
1956         av_opt_set_int(ist->st->codec, "refcounted_frames", 1, 0);
1957
1958         if (!av_dict_get(ist->opts, "threads", NULL, 0))
1959             av_dict_set(&ist->opts, "threads", "auto", 0);
1960         if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
1961             if (ret == AVERROR_EXPERIMENTAL)
1962                 abort_codec_experimental(codec, 0);
1963             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1964                     ist->file_index, ist->st->index);
1965             return ret;
1966         }
1967         assert_avoptions(ist->opts);
1968     }
1969
1970     ist->next_pts = AV_NOPTS_VALUE;
1971     ist->next_dts = AV_NOPTS_VALUE;
1972     ist->is_start = 1;
1973
1974     return 0;
1975 }
1976
1977 static InputStream *get_input_stream(OutputStream *ost)
1978 {
1979     if (ost->source_index >= 0)
1980         return input_streams[ost->source_index];
1981     return NULL;
1982 }
1983
1984 static int compare_int64(const void *a, const void *b)
1985 {
1986     int64_t va = *(int64_t *)a, vb = *(int64_t *)b;
1987     return va < vb ? -1 : va > vb ? +1 : 0;
1988 }
1989
1990 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1991                                     AVCodecContext *avctx)
1992 {
1993     char *p;
1994     int n = 1, i, size, index = 0;
1995     int64_t t, *pts;
1996
1997     for (p = kf; *p; p++)
1998         if (*p == ',')
1999             n++;
2000     size = n;
2001     pts = av_malloc(sizeof(*pts) * size);
2002     if (!pts) {
2003         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
2004         exit(1);
2005     }
2006
2007     p = kf;
2008     for (i = 0; i < n; i++) {
2009         char *next = strchr(p, ',');
2010
2011         if (next)
2012             *next++ = 0;
2013
2014         if (!memcmp(p, "chapters", 8)) {
2015
2016             AVFormatContext *avf = output_files[ost->file_index]->ctx;
2017             int j;
2018
2019             if (avf->nb_chapters > INT_MAX - size ||
2020                 !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
2021                                      sizeof(*pts)))) {
2022                 av_log(NULL, AV_LOG_FATAL,
2023                        "Could not allocate forced key frames array.\n");
2024                 exit(1);
2025             }
2026             t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
2027             t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2028
2029             for (j = 0; j < avf->nb_chapters; j++) {
2030                 AVChapter *c = avf->chapters[j];
2031                 av_assert1(index < size);
2032                 pts[index++] = av_rescale_q(c->start, c->time_base,
2033                                             avctx->time_base) + t;
2034             }
2035
2036         } else {
2037
2038             t = parse_time_or_die("force_key_frames", p, 1);
2039             av_assert1(index < size);
2040             pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2041
2042         }
2043
2044         p = next;
2045     }
2046
2047     av_assert0(index == size);
2048     qsort(pts, size, sizeof(*pts), compare_int64);
2049     ost->forced_kf_count = size;
2050     ost->forced_kf_pts   = pts;
2051 }
2052
2053 static void report_new_stream(int input_index, AVPacket *pkt)
2054 {
2055     InputFile *file = input_files[input_index];
2056     AVStream *st = file->ctx->streams[pkt->stream_index];
2057
2058     if (pkt->stream_index < file->nb_streams_warn)
2059         return;
2060     av_log(file->ctx, AV_LOG_WARNING,
2061            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
2062            av_get_media_type_string(st->codec->codec_type),
2063            input_index, pkt->stream_index,
2064            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
2065     file->nb_streams_warn = pkt->stream_index + 1;
2066 }
2067
2068 static int transcode_init(void)
2069 {
2070     int ret = 0, i, j, k;
2071     AVFormatContext *oc;
2072     AVCodecContext *codec;
2073     OutputStream *ost;
2074     InputStream *ist;
2075     char error[1024];
2076     int want_sdp = 1;
2077
2078     /* init framerate emulation */
2079     for (i = 0; i < nb_input_files; i++) {
2080         InputFile *ifile = input_files[i];
2081         if (ifile->rate_emu)
2082             for (j = 0; j < ifile->nb_streams; j++)
2083                 input_streams[j + ifile->ist_index]->start = av_gettime();
2084     }
2085
2086     /* output stream init */
2087     for (i = 0; i < nb_output_files; i++) {
2088         oc = output_files[i]->ctx;
2089         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2090             av_dump_format(oc, i, oc->filename, 1);
2091             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2092             return AVERROR(EINVAL);
2093         }
2094     }
2095
2096     /* init complex filtergraphs */
2097     for (i = 0; i < nb_filtergraphs; i++)
2098         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2099             return ret;
2100
2101     /* for each output stream, we compute the right encoding parameters */
2102     for (i = 0; i < nb_output_streams; i++) {
2103         AVCodecContext *icodec = NULL;
2104         ost = output_streams[i];
2105         oc  = output_files[ost->file_index]->ctx;
2106         ist = get_input_stream(ost);
2107
2108         if (ost->attachment_filename)
2109             continue;
2110
2111         codec  = ost->st->codec;
2112
2113         if (ist) {
2114             icodec = ist->st->codec;
2115
2116             ost->st->disposition          = ist->st->disposition;
2117             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2118             codec->chroma_sample_location = icodec->chroma_sample_location;
2119         }
2120
2121         if (ost->stream_copy) {
2122             uint64_t extra_size;
2123
2124             av_assert0(ist && !ost->filter);
2125
2126             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2127
2128             if (extra_size > INT_MAX) {
2129                 return AVERROR(EINVAL);
2130             }
2131
2132             /* if stream_copy is selected, no need to decode or encode */
2133             codec->codec_id   = icodec->codec_id;
2134             codec->codec_type = icodec->codec_type;
2135
2136             if (!codec->codec_tag) {
2137                 unsigned int codec_tag;
2138                 if (!oc->oformat->codec_tag ||
2139                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2140                      !av_codec_get_tag2(oc->oformat->codec_tag, icodec->codec_id, &codec_tag))
2141                     codec->codec_tag = icodec->codec_tag;
2142             }
2143
2144             codec->bit_rate       = icodec->bit_rate;
2145             codec->rc_max_rate    = icodec->rc_max_rate;
2146             codec->rc_buffer_size = icodec->rc_buffer_size;
2147             codec->field_order    = icodec->field_order;
2148             codec->extradata      = av_mallocz(extra_size);
2149             if (!codec->extradata) {
2150                 return AVERROR(ENOMEM);
2151             }
2152             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2153             codec->extradata_size= icodec->extradata_size;
2154             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2155
2156             codec->time_base = ist->st->time_base;
2157             /*
2158              * Avi is a special case here because it supports variable fps but
2159              * having the fps and timebase differe significantly adds quite some
2160              * overhead
2161              */
2162             if(!strcmp(oc->oformat->name, "avi")) {
2163                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2164                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2165                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2166                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2167                      || copy_tb==2){
2168                     codec->time_base.num = ist->st->r_frame_rate.den;
2169                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2170                     codec->ticks_per_frame = 2;
2171                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2172                                  && av_q2d(ist->st->time_base) < 1.0/500
2173                     || copy_tb==0){
2174                     codec->time_base = icodec->time_base;
2175                     codec->time_base.num *= icodec->ticks_per_frame;
2176                     codec->time_base.den *= 2;
2177                     codec->ticks_per_frame = 2;
2178                 }
2179             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2180                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2181                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2182                       && strcmp(oc->oformat->name, "f4v")
2183             ) {
2184                 if(   copy_tb<0 && icodec->time_base.den
2185                                 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2186                                 && av_q2d(ist->st->time_base) < 1.0/500
2187                    || copy_tb==0){
2188                     codec->time_base = icodec->time_base;
2189                     codec->time_base.num *= icodec->ticks_per_frame;
2190                 }
2191             }
2192             if (   codec->codec_tag == AV_RL32("tmcd")
2193                 && icodec->time_base.num < icodec->time_base.den
2194                 && icodec->time_base.num > 0
2195                 && 121LL*icodec->time_base.num > icodec->time_base.den) {
2196                 codec->time_base = icodec->time_base;
2197             }
2198
2199             if (ist && !ost->frame_rate.num)
2200                 ost->frame_rate = ist->framerate;
2201             if(ost->frame_rate.num)
2202                 codec->time_base = av_inv_q(ost->frame_rate);
2203
2204             av_reduce(&codec->time_base.num, &codec->time_base.den,
2205                         codec->time_base.num, codec->time_base.den, INT_MAX);
2206
2207             switch (codec->codec_type) {
2208             case AVMEDIA_TYPE_AUDIO:
2209                 if (audio_volume != 256) {
2210                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2211                     exit(1);
2212                 }
2213                 codec->channel_layout     = icodec->channel_layout;
2214                 codec->sample_rate        = icodec->sample_rate;
2215                 codec->channels           = icodec->channels;
2216                 codec->frame_size         = icodec->frame_size;
2217                 codec->audio_service_type = icodec->audio_service_type;
2218                 codec->block_align        = icodec->block_align;
2219                 if((codec->block_align == 1 || codec->block_align == 1152 || codec->block_align == 576) && codec->codec_id == AV_CODEC_ID_MP3)
2220                     codec->block_align= 0;
2221                 if(codec->codec_id == AV_CODEC_ID_AC3)
2222                     codec->block_align= 0;
2223                 break;
2224             case AVMEDIA_TYPE_VIDEO:
2225                 codec->pix_fmt            = icodec->pix_fmt;
2226                 codec->width              = icodec->width;
2227                 codec->height             = icodec->height;
2228                 codec->has_b_frames       = icodec->has_b_frames;
2229                 if (!codec->sample_aspect_ratio.num) {
2230                     codec->sample_aspect_ratio   =
2231                     ost->st->sample_aspect_ratio =
2232                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2233                         ist->st->codec->sample_aspect_ratio.num ?
2234                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2235                 }
2236                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2237                 break;
2238             case AVMEDIA_TYPE_SUBTITLE:
2239                 codec->width  = icodec->width;
2240                 codec->height = icodec->height;
2241                 break;
2242             case AVMEDIA_TYPE_DATA:
2243             case AVMEDIA_TYPE_ATTACHMENT:
2244                 break;
2245             default:
2246                 abort();
2247             }
2248         } else {
2249             if (!ost->enc)
2250                 ost->enc = avcodec_find_encoder(codec->codec_id);
2251             if (!ost->enc) {
2252                 /* should only happen when a default codec is not present. */
2253                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2254                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2255                 ret = AVERROR(EINVAL);
2256                 goto dump_format;
2257             }
2258
2259             if (ist)
2260                 ist->decoding_needed++;
2261             ost->encoding_needed = 1;
2262
2263             if (!ost->filter &&
2264                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2265                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2266                     FilterGraph *fg;
2267                     fg = init_simple_filtergraph(ist, ost);
2268                     if (configure_filtergraph(fg)) {
2269                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2270                         exit(1);
2271                     }
2272             }
2273
2274             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2275                 if (ost->filter && !ost->frame_rate.num)
2276                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2277                 if (ist && !ost->frame_rate.num)
2278                     ost->frame_rate = ist->framerate;
2279                 if (ist && !ost->frame_rate.num)
2280                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2281 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2282                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2283                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2284                     ost->frame_rate = ost->enc->supported_framerates[idx];
2285                 }
2286             }
2287
2288             switch (codec->codec_type) {
2289             case AVMEDIA_TYPE_AUDIO:
2290                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2291                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2292                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2293                 codec->channels       = avfilter_link_get_channels(ost->filter->filter->inputs[0]);
2294                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2295                 break;
2296             case AVMEDIA_TYPE_VIDEO:
2297                 codec->time_base = av_inv_q(ost->frame_rate);
2298                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2299                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2300                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2301                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2302                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2303                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2304                 }
2305                 for (j = 0; j < ost->forced_kf_count; j++)
2306                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2307                                                          AV_TIME_BASE_Q,
2308                                                          codec->time_base);
2309
2310                 codec->width  = ost->filter->filter->inputs[0]->w;
2311                 codec->height = ost->filter->filter->inputs[0]->h;
2312                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2313                     ost->frame_aspect_ratio.num ? // overridden by the -aspect cli option
2314                     av_mul_q(ost->frame_aspect_ratio, (AVRational){ codec->height, codec->width }) :
2315                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2316                 if (!strncmp(ost->enc->name, "libx264", 7) &&
2317                     codec->pix_fmt == AV_PIX_FMT_NONE &&
2318                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2319                     av_log(NULL, AV_LOG_INFO,
2320                            "No pixel format specified, %s for H.264 encoding chosen.\n"
2321                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2322                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2323                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2324
2325                 if (!icodec ||
2326                     codec->width   != icodec->width  ||
2327                     codec->height  != icodec->height ||
2328                     codec->pix_fmt != icodec->pix_fmt) {
2329                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2330                 }
2331
2332                 if (ost->forced_keyframes) {
2333                     if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
2334                         ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
2335                                             forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
2336                         if (ret < 0) {
2337                             av_log(NULL, AV_LOG_ERROR,
2338                                    "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
2339                             return ret;
2340                         }
2341                         ost->forced_keyframes_expr_const_values[FKF_N] = 0;
2342                         ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
2343                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
2344                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;
2345                     } else {
2346                         parse_forced_key_frames(ost->forced_keyframes, ost, ost->st->codec);
2347                     }
2348                 }
2349                 break;
2350             case AVMEDIA_TYPE_SUBTITLE:
2351                 codec->time_base = (AVRational){1, 1000};
2352                 if (!codec->width) {
2353                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2354                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2355                 }
2356                 break;
2357             default:
2358                 abort();
2359                 break;
2360             }
2361             /* two pass mode */
2362             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2363                 char logfilename[1024];
2364                 FILE *f;
2365
2366                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2367                          ost->logfile_prefix ? ost->logfile_prefix :
2368                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2369                          i);
2370                 if (!strcmp(ost->enc->name, "libx264")) {
2371                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2372                 } else {
2373                     if (codec->flags & CODEC_FLAG_PASS2) {
2374                         char  *logbuffer;
2375                         size_t logbuffer_size;
2376                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2377                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2378                                    logfilename);
2379                             exit(1);
2380                         }
2381                         codec->stats_in = logbuffer;
2382                     }
2383                     if (codec->flags & CODEC_FLAG_PASS1) {
2384                         f = fopen(logfilename, "wb");
2385                         if (!f) {
2386                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2387                                 logfilename, strerror(errno));
2388                             exit(1);
2389                         }
2390                         ost->logfile = f;
2391                     }
2392                 }
2393             }
2394         }
2395     }
2396
2397     /* open each encoder */
2398     for (i = 0; i < nb_output_streams; i++) {
2399         ost = output_streams[i];
2400         if (ost->encoding_needed) {
2401             AVCodec      *codec = ost->enc;
2402             AVCodecContext *dec = NULL;
2403
2404             if ((ist = get_input_stream(ost)))
2405                 dec = ist->st->codec;
2406             if (dec && dec->subtitle_header) {
2407                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2408                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2409                 if (!ost->st->codec->subtitle_header) {
2410                     ret = AVERROR(ENOMEM);
2411                     goto dump_format;
2412                 }
2413                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2414                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2415             }
2416             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2417                 av_dict_set(&ost->opts, "threads", "auto", 0);
2418             if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
2419                 if (ret == AVERROR_EXPERIMENTAL)
2420                     abort_codec_experimental(codec, 1);
2421                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2422                         ost->file_index, ost->index);
2423                 goto dump_format;
2424             }
2425             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2426                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2427                 av_buffersink_set_frame_size(ost->filter->filter,
2428                                              ost->st->codec->frame_size);
2429             assert_avoptions(ost->opts);
2430             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2431                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2432                                              " It takes bits/s as argument, not kbits/s\n");
2433             extra_size += ost->st->codec->extradata_size;
2434
2435             if (ost->st->codec->me_threshold)
2436                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
2437         } else {
2438             av_opt_set_dict(ost->st->codec, &ost->opts);
2439         }
2440     }
2441
2442     /* init input streams */
2443     for (i = 0; i < nb_input_streams; i++)
2444         if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
2445             for (i = 0; i < nb_output_streams; i++) {
2446                 ost = output_streams[i];
2447                 avcodec_close(ost->st->codec);
2448             }
2449             goto dump_format;
2450         }
2451
2452     /* discard unused programs */
2453     for (i = 0; i < nb_input_files; i++) {
2454         InputFile *ifile = input_files[i];
2455         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2456             AVProgram *p = ifile->ctx->programs[j];
2457             int discard  = AVDISCARD_ALL;
2458
2459             for (k = 0; k < p->nb_stream_indexes; k++)
2460                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2461                     discard = AVDISCARD_DEFAULT;
2462                     break;
2463                 }
2464             p->discard = discard;
2465         }
2466     }
2467
2468     /* open files and write file headers */
2469     for (i = 0; i < nb_output_files; i++) {
2470         oc = output_files[i]->ctx;
2471         oc->interrupt_callback = int_cb;
2472         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2473             char errbuf[128];
2474             const char *errbuf_ptr = errbuf;
2475             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
2476                 errbuf_ptr = strerror(AVUNERROR(ret));
2477             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
2478             ret = AVERROR(EINVAL);
2479             goto dump_format;
2480         }
2481 //         assert_avoptions(output_files[i]->opts);
2482         if (strcmp(oc->oformat->name, "rtp")) {
2483             want_sdp = 0;
2484         }
2485     }
2486
2487  dump_format:
2488     /* dump the file output parameters - cannot be done before in case
2489        of stream copy */
2490     for (i = 0; i < nb_output_files; i++) {
2491         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2492     }
2493
2494     /* dump the stream mapping */
2495     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2496     for (i = 0; i < nb_input_streams; i++) {
2497         ist = input_streams[i];
2498
2499         for (j = 0; j < ist->nb_filters; j++) {
2500             if (ist->filters[j]->graph->graph_desc) {
2501                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2502                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2503                        ist->filters[j]->name);
2504                 if (nb_filtergraphs > 1)
2505                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2506                 av_log(NULL, AV_LOG_INFO, "\n");
2507             }
2508         }
2509     }
2510
2511     for (i = 0; i < nb_output_streams; i++) {
2512         ost = output_streams[i];
2513
2514         if (ost->attachment_filename) {
2515             /* an attached file */
2516             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2517                    ost->attachment_filename, ost->file_index, ost->index);
2518             continue;
2519         }
2520
2521         if (ost->filter && ost->filter->graph->graph_desc) {
2522             /* output from a complex graph */
2523             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2524             if (nb_filtergraphs > 1)
2525                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2526
2527             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2528                    ost->index, ost->enc ? ost->enc->name : "?");
2529             continue;
2530         }
2531
2532         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2533                input_streams[ost->source_index]->file_index,
2534                input_streams[ost->source_index]->st->index,
2535                ost->file_index,
2536                ost->index);
2537         if (ost->sync_ist != input_streams[ost->source_index])
2538             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2539                    ost->sync_ist->file_index,
2540                    ost->sync_ist->st->index);
2541         if (ost->stream_copy)
2542             av_log(NULL, AV_LOG_INFO, " (copy)");
2543         else
2544             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2545                    input_streams[ost->source_index]->dec->name : "?",
2546                    ost->enc ? ost->enc->name : "?");
2547         av_log(NULL, AV_LOG_INFO, "\n");
2548     }
2549
2550     if (ret) {
2551         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2552         return ret;
2553     }
2554
2555     if (want_sdp) {
2556         print_sdp();
2557     }
2558
2559     return 0;
2560 }
2561
2562 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2563 static int need_output(void)
2564 {
2565     int i;
2566
2567     for (i = 0; i < nb_output_streams; i++) {
2568         OutputStream *ost    = output_streams[i];
2569         OutputFile *of       = output_files[ost->file_index];
2570         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2571
2572         if (ost->finished ||
2573             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2574             continue;
2575         if (ost->frame_number >= ost->max_frames) {
2576             int j;
2577             for (j = 0; j < of->ctx->nb_streams; j++)
2578                 close_output_stream(output_streams[of->ost_index + j]);
2579             continue;
2580         }
2581
2582         return 1;
2583     }
2584
2585     return 0;
2586 }
2587
2588 /**
2589  * Select the output stream to process.
2590  *
2591  * @return  selected output stream, or NULL if none available
2592  */
2593 static OutputStream *choose_output(void)
2594 {
2595     int i;
2596     int64_t opts_min = INT64_MAX;
2597     OutputStream *ost_min = NULL;
2598
2599     for (i = 0; i < nb_output_streams; i++) {
2600         OutputStream *ost = output_streams[i];
2601         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2602                                     AV_TIME_BASE_Q);
2603         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2604             opts_min = opts;
2605             ost_min  = ost;
2606         }
2607     }
2608     return ost_min;
2609 }
2610
2611 static int check_keyboard_interaction(int64_t cur_time)
2612 {
2613     int i, ret, key;
2614     static int64_t last_time;
2615     if (received_nb_signals)
2616         return AVERROR_EXIT;
2617     /* read_key() returns 0 on EOF */
2618     if(cur_time - last_time >= 100000 && !run_as_daemon){
2619         key =  read_key();
2620         last_time = cur_time;
2621     }else
2622         key = -1;
2623     if (key == 'q')
2624         return AVERROR_EXIT;
2625     if (key == '+') av_log_set_level(av_log_get_level()+10);
2626     if (key == '-') av_log_set_level(av_log_get_level()-10);
2627     if (key == 's') qp_hist     ^= 1;
2628     if (key == 'h'){
2629         if (do_hex_dump){
2630             do_hex_dump = do_pkt_dump = 0;
2631         } else if(do_pkt_dump){
2632             do_hex_dump = 1;
2633         } else
2634             do_pkt_dump = 1;
2635         av_log_set_level(AV_LOG_DEBUG);
2636     }
2637     if (key == 'c' || key == 'C'){
2638         char buf[4096], target[64], command[256], arg[256] = {0};
2639         double time;
2640         int k, n = 0;
2641         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2642         i = 0;
2643         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2644             if (k > 0)
2645                 buf[i++] = k;
2646         buf[i] = 0;
2647         if (k > 0 &&
2648             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2649             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2650                    target, time, command, arg);
2651             for (i = 0; i < nb_filtergraphs; i++) {
2652                 FilterGraph *fg = filtergraphs[i];
2653                 if (fg->graph) {
2654                     if (time < 0) {
2655                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2656                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2657                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2658                     } else {
2659                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2660                     }
2661                 }
2662             }
2663         } else {
2664             av_log(NULL, AV_LOG_ERROR,
2665                    "Parse error, at least 3 arguments were expected, "
2666                    "only %d given in string '%s'\n", n, buf);
2667         }
2668     }
2669     if (key == 'd' || key == 'D'){
2670         int debug=0;
2671         if(key == 'D') {
2672             debug = input_streams[0]->st->codec->debug<<1;
2673             if(!debug) debug = 1;
2674             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2675                 debug += debug;
2676         }else
2677             if(scanf("%d", &debug)!=1)
2678                 fprintf(stderr,"error parsing debug value\n");
2679         for(i=0;i<nb_input_streams;i++) {
2680             input_streams[i]->st->codec->debug = debug;
2681         }
2682         for(i=0;i<nb_output_streams;i++) {
2683             OutputStream *ost = output_streams[i];
2684             ost->st->codec->debug = debug;
2685         }
2686         if(debug) av_log_set_level(AV_LOG_DEBUG);
2687         fprintf(stderr,"debug=%d\n", debug);
2688     }
2689     if (key == '?'){
2690         fprintf(stderr, "key    function\n"
2691                         "?      show this help\n"
2692                         "+      increase verbosity\n"
2693                         "-      decrease verbosity\n"
2694                         "c      Send command to filtergraph\n"
2695                         "D      cycle through available debug modes\n"
2696                         "h      dump packets/hex press to cycle through the 3 states\n"
2697                         "q      quit\n"
2698                         "s      Show QP histogram\n"
2699         );
2700     }
2701     return 0;
2702 }
2703
2704 #if HAVE_PTHREADS
2705 static void *input_thread(void *arg)
2706 {
2707     InputFile *f = arg;
2708     int ret = 0;
2709
2710     while (!transcoding_finished && ret >= 0) {
2711         AVPacket pkt;
2712         ret = av_read_frame(f->ctx, &pkt);
2713
2714         if (ret == AVERROR(EAGAIN)) {
2715             av_usleep(10000);
2716             ret = 0;
2717             continue;
2718         } else if (ret < 0)
2719             break;
2720
2721         pthread_mutex_lock(&f->fifo_lock);
2722         while (!av_fifo_space(f->fifo))
2723             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2724
2725         av_dup_packet(&pkt);
2726         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2727
2728         pthread_mutex_unlock(&f->fifo_lock);
2729     }
2730
2731     f->finished = 1;
2732     return NULL;
2733 }
2734
2735 static void free_input_threads(void)
2736 {
2737     int i;
2738
2739     if (nb_input_files == 1)
2740         return;
2741
2742     transcoding_finished = 1;
2743
2744     for (i = 0; i < nb_input_files; i++) {
2745         InputFile *f = input_files[i];
2746         AVPacket pkt;
2747
2748         if (!f->fifo || f->joined)
2749             continue;
2750
2751         pthread_mutex_lock(&f->fifo_lock);
2752         while (av_fifo_size(f->fifo)) {
2753             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2754             av_free_packet(&pkt);
2755         }
2756         pthread_cond_signal(&f->fifo_cond);
2757         pthread_mutex_unlock(&f->fifo_lock);
2758
2759         pthread_join(f->thread, NULL);
2760         f->joined = 1;
2761
2762         while (av_fifo_size(f->fifo)) {
2763             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2764             av_free_packet(&pkt);
2765         }
2766         av_fifo_free(f->fifo);
2767     }
2768 }
2769
2770 static int init_input_threads(void)
2771 {
2772     int i, ret;
2773
2774     if (nb_input_files == 1)
2775         return 0;
2776
2777     for (i = 0; i < nb_input_files; i++) {
2778         InputFile *f = input_files[i];
2779
2780         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2781             return AVERROR(ENOMEM);
2782
2783         pthread_mutex_init(&f->fifo_lock, NULL);
2784         pthread_cond_init (&f->fifo_cond, NULL);
2785
2786         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2787             return AVERROR(ret);
2788     }
2789     return 0;
2790 }
2791
2792 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2793 {
2794     int ret = 0;
2795
2796     pthread_mutex_lock(&f->fifo_lock);
2797
2798     if (av_fifo_size(f->fifo)) {
2799         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2800         pthread_cond_signal(&f->fifo_cond);
2801     } else {
2802         if (f->finished)
2803             ret = AVERROR_EOF;
2804         else
2805             ret = AVERROR(EAGAIN);
2806     }
2807
2808     pthread_mutex_unlock(&f->fifo_lock);
2809
2810     return ret;
2811 }
2812 #endif
2813
2814 static int get_input_packet(InputFile *f, AVPacket *pkt)
2815 {
2816 #if HAVE_PTHREADS
2817     if (nb_input_files > 1)
2818         return get_input_packet_mt(f, pkt);
2819 #endif
2820     return av_read_frame(f->ctx, pkt);
2821 }
2822
2823 static int got_eagain(void)
2824 {
2825     int i;
2826     for (i = 0; i < nb_output_streams; i++)
2827         if (output_streams[i]->unavailable)
2828             return 1;
2829     return 0;
2830 }
2831
2832 static void reset_eagain(void)
2833 {
2834     int i;
2835     for (i = 0; i < nb_input_files; i++)
2836         input_files[i]->eagain = 0;
2837     for (i = 0; i < nb_output_streams; i++)
2838         output_streams[i]->unavailable = 0;
2839 }
2840
2841 /*
2842  * Return
2843  * - 0 -- one packet was read and processed
2844  * - AVERROR(EAGAIN) -- no packets were available for selected file,
2845  *   this function should be called again
2846  * - AVERROR_EOF -- this function should not be called again
2847  */
2848 static int process_input(int file_index)
2849 {
2850     InputFile *ifile = input_files[file_index];
2851     AVFormatContext *is;
2852     InputStream *ist;
2853     AVPacket pkt;
2854     int ret, i, j;
2855
2856     is  = ifile->ctx;
2857     ret = get_input_packet(ifile, &pkt);
2858
2859     if (ret == AVERROR(EAGAIN)) {
2860         ifile->eagain = 1;
2861         return ret;
2862     }
2863     if (ret < 0) {
2864         if (ret != AVERROR_EOF) {
2865             print_error(is->filename, ret);
2866             if (exit_on_error)
2867                 exit(1);
2868         }
2869         ifile->eof_reached = 1;
2870
2871         for (i = 0; i < ifile->nb_streams; i++) {
2872             ist = input_streams[ifile->ist_index + i];
2873             if (ist->decoding_needed)
2874                 output_packet(ist, NULL);
2875
2876             /* mark all outputs that don't go through lavfi as finished */
2877             for (j = 0; j < nb_output_streams; j++) {
2878                 OutputStream *ost = output_streams[j];
2879
2880                 if (ost->source_index == ifile->ist_index + i &&
2881                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2882                     close_output_stream(ost);
2883             }
2884         }
2885
2886         return AVERROR(EAGAIN);
2887     }
2888
2889     reset_eagain();
2890
2891     if (do_pkt_dump) {
2892         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2893                          is->streams[pkt.stream_index]);
2894     }
2895     /* the following test is needed in case new streams appear
2896        dynamically in stream : we ignore them */
2897     if (pkt.stream_index >= ifile->nb_streams) {
2898         report_new_stream(file_index, &pkt);
2899         goto discard_packet;
2900     }
2901
2902     ist = input_streams[ifile->ist_index + pkt.stream_index];
2903     if (ist->discard)
2904         goto discard_packet;
2905
2906     if (debug_ts) {
2907         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
2908                "next_dts:%s next_dts_time:%s next_pts:%s next_pts_time:%s pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%s off_time:%s\n",
2909                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2910                av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
2911                av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
2912                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2913                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2914                av_ts2str(input_files[ist->file_index]->ts_offset),
2915                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
2916     }
2917
2918     if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
2919         int64_t stime, stime2;
2920         // Correcting starttime based on the enabled streams
2921         // FIXME this ideally should be done before the first use of starttime but we do not know which are the enabled streams at that point.
2922         //       so we instead do it here as part of discontinuity handling
2923         if (   ist->next_dts == AV_NOPTS_VALUE
2924             && ifile->ts_offset == -is->start_time
2925             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2926             int64_t new_start_time = INT64_MAX;
2927             for (i=0; i<is->nb_streams; i++) {
2928                 AVStream *st = is->streams[i];
2929                 if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
2930                     continue;
2931                 new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
2932             }
2933             if (new_start_time > is->start_time) {
2934                 av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
2935                 ifile->ts_offset = -new_start_time;
2936             }
2937         }
2938
2939         stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
2940         stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
2941         ist->wrap_correction_done = 1;
2942
2943         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2944             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
2945             ist->wrap_correction_done = 0;
2946         }
2947         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2948             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
2949             ist->wrap_correction_done = 0;
2950         }
2951     }
2952
2953     if (pkt.dts != AV_NOPTS_VALUE)
2954         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2955     if (pkt.pts != AV_NOPTS_VALUE)
2956         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2957
2958     if (pkt.pts != AV_NOPTS_VALUE)
2959         pkt.pts *= ist->ts_scale;
2960     if (pkt.dts != AV_NOPTS_VALUE)
2961         pkt.dts *= ist->ts_scale;
2962
2963     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts == AV_NOPTS_VALUE && !copy_ts
2964         && (is->iformat->flags & AVFMT_TS_DISCONT) && ifile->last_ts != AV_NOPTS_VALUE) {
2965         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2966         int64_t delta   = pkt_dts - ifile->last_ts;
2967         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2968             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2969                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)){
2970             ifile->ts_offset -= delta;
2971             av_log(NULL, AV_LOG_DEBUG,
2972                    "Inter stream timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2973                    delta, ifile->ts_offset);
2974             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2975             if (pkt.pts != AV_NOPTS_VALUE)
2976                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2977         }
2978     }
2979
2980     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2981         !copy_ts) {
2982         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2983         int64_t delta   = pkt_dts - ist->next_dts;
2984         if (is->iformat->flags & AVFMT_TS_DISCONT) {
2985         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2986             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2987                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2988             pkt_dts+1<ist->pts){
2989             ifile->ts_offset -= delta;
2990             av_log(NULL, AV_LOG_DEBUG,
2991                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2992                    delta, ifile->ts_offset);
2993             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2994             if (pkt.pts != AV_NOPTS_VALUE)
2995                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2996         }
2997         } else {
2998             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2999                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
3000                ) {
3001                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3002                 pkt.dts = AV_NOPTS_VALUE;
3003             }
3004             if (pkt.pts != AV_NOPTS_VALUE){
3005                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3006                 delta   = pkt_pts - ist->next_dts;
3007                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3008                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
3009                    ) {
3010                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3011                     pkt.pts = AV_NOPTS_VALUE;
3012                 }
3013             }
3014         }
3015     }
3016
3017     if (pkt.dts != AV_NOPTS_VALUE)
3018         ifile->last_ts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3019
3020     if (debug_ts) {
3021         av_log(NULL, AV_LOG_INFO, "demuxer+ffmpeg -> ist_index:%d type:%s pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%s off_time:%s\n",
3022                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
3023                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3024                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3025                av_ts2str(input_files[ist->file_index]->ts_offset),
3026                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3027     }
3028
3029     sub2video_heartbeat(ist, pkt.pts);
3030
3031     ret = output_packet(ist, &pkt);
3032     if (ret < 0) {
3033         char buf[128];
3034         av_strerror(ret, buf, sizeof(buf));
3035         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
3036                 ist->file_index, ist->st->index, buf);
3037         if (exit_on_error)
3038             exit(1);
3039     }
3040
3041 discard_packet:
3042     av_free_packet(&pkt);
3043
3044     return 0;
3045 }
3046
3047 /**
3048  * Perform a step of transcoding for the specified filter graph.
3049  *
3050  * @param[in]  graph     filter graph to consider
3051  * @param[out] best_ist  input stream where a frame would allow to continue
3052  * @return  0 for success, <0 for error
3053  */
3054 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
3055 {
3056     int i, ret;
3057     int nb_requests, nb_requests_max = 0;
3058     InputFilter *ifilter;
3059     InputStream *ist;
3060
3061     *best_ist = NULL;
3062     ret = avfilter_graph_request_oldest(graph->graph);
3063     if (ret >= 0)
3064         return reap_filters();
3065
3066     if (ret == AVERROR_EOF) {
3067         ret = reap_filters();
3068         for (i = 0; i < graph->nb_outputs; i++)
3069             close_output_stream(graph->outputs[i]->ost);
3070         return ret;
3071     }
3072     if (ret != AVERROR(EAGAIN))
3073         return ret;
3074
3075     for (i = 0; i < graph->nb_inputs; i++) {
3076         ifilter = graph->inputs[i];
3077         ist = ifilter->ist;
3078         if (input_files[ist->file_index]->eagain ||
3079             input_files[ist->file_index]->eof_reached)
3080             continue;
3081         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
3082         if (nb_requests > nb_requests_max) {
3083             nb_requests_max = nb_requests;
3084             *best_ist = ist;
3085         }
3086     }
3087
3088     if (!*best_ist)
3089         for (i = 0; i < graph->nb_outputs; i++)
3090             graph->outputs[i]->ost->unavailable = 1;
3091
3092     return 0;
3093 }
3094
3095 /**
3096  * Run a single step of transcoding.
3097  *
3098  * @return  0 for success, <0 for error
3099  */
3100 static int transcode_step(void)
3101 {
3102     OutputStream *ost;
3103     InputStream  *ist;
3104     int ret;
3105
3106     ost = choose_output();
3107     if (!ost) {
3108         if (got_eagain()) {
3109             reset_eagain();
3110             av_usleep(10000);
3111             return 0;
3112         }
3113         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
3114         return AVERROR_EOF;
3115     }
3116
3117     if (ost->filter) {
3118         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
3119             return ret;
3120         if (!ist)
3121             return 0;
3122     } else {
3123         av_assert0(ost->source_index >= 0);
3124         ist = input_streams[ost->source_index];
3125     }
3126
3127     ret = process_input(ist->file_index);
3128     if (ret == AVERROR(EAGAIN)) {
3129         if (input_files[ist->file_index]->eagain)
3130             ost->unavailable = 1;
3131         return 0;
3132     }
3133     if (ret < 0)
3134         return ret == AVERROR_EOF ? 0 : ret;
3135
3136     return reap_filters();
3137 }
3138
3139 /*
3140  * The following code is the main loop of the file converter
3141  */
3142 static int transcode(void)
3143 {
3144     int ret, i;
3145     AVFormatContext *os;
3146     OutputStream *ost;
3147     InputStream *ist;
3148     int64_t timer_start;
3149
3150     ret = transcode_init();
3151     if (ret < 0)
3152         goto fail;
3153
3154     if (stdin_interaction) {
3155         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3156     }
3157
3158     timer_start = av_gettime();
3159
3160 #if HAVE_PTHREADS
3161     if ((ret = init_input_threads()) < 0)
3162         goto fail;
3163 #endif
3164
3165     while (!received_sigterm) {
3166         int64_t cur_time= av_gettime();
3167
3168         /* if 'q' pressed, exits */
3169         if (stdin_interaction)
3170             if (check_keyboard_interaction(cur_time) < 0)
3171                 break;
3172
3173         /* check if there's any stream where output is still needed */
3174         if (!need_output()) {
3175             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3176             break;
3177         }
3178
3179         ret = transcode_step();
3180         if (ret < 0) {
3181             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
3182                 continue;
3183
3184             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
3185             break;
3186         }
3187
3188         /* dump report by using the output first video and audio streams */
3189         print_report(0, timer_start, cur_time);
3190     }
3191 #if HAVE_PTHREADS
3192     free_input_threads();
3193 #endif
3194
3195     /* at the end of stream, we must flush the decoder buffers */
3196     for (i = 0; i < nb_input_streams; i++) {
3197         ist = input_streams[i];
3198         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3199             output_packet(ist, NULL);
3200         }
3201     }
3202     flush_encoders();
3203
3204     term_exit();
3205
3206     /* write the trailer if needed and close file */
3207     for (i = 0; i < nb_output_files; i++) {
3208         os = output_files[i]->ctx;
3209         av_write_trailer(os);
3210     }
3211
3212     /* dump report by using the first video and audio streams */
3213     print_report(1, timer_start, av_gettime());
3214
3215     /* close each encoder */
3216     for (i = 0; i < nb_output_streams; i++) {
3217         ost = output_streams[i];
3218         if (ost->encoding_needed) {
3219             av_freep(&ost->st->codec->stats_in);
3220             avcodec_close(ost->st->codec);
3221         }
3222     }
3223
3224     /* close each decoder */
3225     for (i = 0; i < nb_input_streams; i++) {
3226         ist = input_streams[i];
3227         if (ist->decoding_needed) {
3228             avcodec_close(ist->st->codec);
3229         }
3230     }
3231
3232     /* finished ! */
3233     ret = 0;
3234
3235  fail:
3236 #if HAVE_PTHREADS
3237     free_input_threads();
3238 #endif
3239
3240     if (output_streams) {
3241         for (i = 0; i < nb_output_streams; i++) {
3242             ost = output_streams[i];
3243             if (ost) {
3244                 if (ost->stream_copy)
3245                     av_freep(&ost->st->codec->extradata);
3246                 if (ost->logfile) {
3247                     fclose(ost->logfile);
3248                     ost->logfile = NULL;
3249                 }
3250                 av_freep(&ost->st->codec->subtitle_header);
3251                 av_free(ost->forced_kf_pts);
3252                 av_dict_free(&ost->opts);
3253                 av_dict_free(&ost->swr_opts);
3254                 av_dict_free(&ost->resample_opts);
3255             }
3256         }
3257     }
3258     return ret;
3259 }
3260
3261
3262 static int64_t getutime(void)
3263 {
3264 #if HAVE_GETRUSAGE
3265     struct rusage rusage;
3266
3267     getrusage(RUSAGE_SELF, &rusage);
3268     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3269 #elif HAVE_GETPROCESSTIMES
3270     HANDLE proc;
3271     FILETIME c, e, k, u;
3272     proc = GetCurrentProcess();
3273     GetProcessTimes(proc, &c, &e, &k, &u);
3274     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3275 #else
3276     return av_gettime();
3277 #endif
3278 }
3279
3280 static int64_t getmaxrss(void)
3281 {
3282 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3283     struct rusage rusage;
3284     getrusage(RUSAGE_SELF, &rusage);
3285     return (int64_t)rusage.ru_maxrss * 1024;
3286 #elif HAVE_GETPROCESSMEMORYINFO
3287     HANDLE proc;
3288     PROCESS_MEMORY_COUNTERS memcounters;
3289     proc = GetCurrentProcess();
3290     memcounters.cb = sizeof(memcounters);
3291     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3292     return memcounters.PeakPagefileUsage;
3293 #else
3294     return 0;
3295 #endif
3296 }
3297
3298 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3299 {
3300 }
3301
3302 int main(int argc, char **argv)
3303 {
3304     int ret;
3305     int64_t ti;
3306
3307     atexit(exit_program);
3308
3309     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3310
3311     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3312     parse_loglevel(argc, argv, options);
3313
3314     if(argc>1 && !strcmp(argv[1], "-d")){
3315         run_as_daemon=1;
3316         av_log_set_callback(log_callback_null);
3317         argc--;
3318         argv++;
3319     }
3320
3321     avcodec_register_all();
3322 #if CONFIG_AVDEVICE
3323     avdevice_register_all();
3324 #endif
3325     avfilter_register_all();
3326     av_register_all();
3327     avformat_network_init();
3328
3329     show_banner(argc, argv, options);
3330
3331     term_init();
3332
3333     /* parse options and open all input/output files */
3334     ret = ffmpeg_parse_options(argc, argv);
3335     if (ret < 0)
3336         exit(1);
3337
3338     if (nb_output_files <= 0 && nb_input_files == 0) {
3339         show_usage();
3340         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3341         exit(1);
3342     }
3343
3344     /* file converter / grab */
3345     if (nb_output_files <= 0) {
3346         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3347         exit(1);
3348     }
3349
3350 //     if (nb_input_files == 0) {
3351 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3352 //         exit(1);
3353 //     }
3354
3355     current_time = ti = getutime();
3356     if (transcode() < 0)
3357         exit(1);
3358     ti = getutime() - ti;
3359     if (do_benchmark) {
3360         printf("bench: utime=%0.3fs\n", ti / 1000000.0);
3361     }
3362     av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" frames successfully decoded, %"PRIu64" decoding errors\n",
3363            decode_error_stat[0], decode_error_stat[1]);
3364     if (2*decode_error_stat[0] < decode_error_stat[1])
3365         exit(254);
3366
3367     exit(received_nb_signals ? 255 : 0);
3368     return 0;
3369 }