Merge remote-tracking branch 'qatar/master'
[ffmpeg.git] / ffmpeg.c
1 /*
2  * Copyright (c) 2000-2003 Fabrice Bellard
3  *
4  * This file is part of FFmpeg.
5  *
6  * FFmpeg is free software; you can redistribute it and/or
7  * modify it under the terms of the GNU Lesser General Public
8  * License as published by the Free Software Foundation; either
9  * version 2.1 of the License, or (at your option) any later version.
10  *
11  * FFmpeg is distributed in the hope that it will be useful,
12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
14  * Lesser General Public License for more details.
15  *
16  * You should have received a copy of the GNU Lesser General Public
17  * License along with FFmpeg; if not, write to the Free Software
18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19  */
20
21 /**
22  * @file
23  * multimedia converter based on the FFmpeg libraries
24  */
25
26 #include "config.h"
27 #include <ctype.h>
28 #include <string.h>
29 #include <math.h>
30 #include <stdlib.h>
31 #include <errno.h>
32 #include <limits.h>
33 #if HAVE_ISATTY
34 #if HAVE_IO_H
35 #include <io.h>
36 #endif
37 #if HAVE_UNISTD_H
38 #include <unistd.h>
39 #endif
40 #endif
41 #include "libavformat/avformat.h"
42 #include "libavdevice/avdevice.h"
43 #include "libswscale/swscale.h"
44 #include "libswresample/swresample.h"
45 #include "libavutil/opt.h"
46 #include "libavutil/audioconvert.h"
47 #include "libavutil/parseutils.h"
48 #include "libavutil/samplefmt.h"
49 #include "libavutil/colorspace.h"
50 #include "libavutil/fifo.h"
51 #include "libavutil/intreadwrite.h"
52 #include "libavutil/dict.h"
53 #include "libavutil/mathematics.h"
54 #include "libavutil/pixdesc.h"
55 #include "libavutil/avstring.h"
56 #include "libavutil/libm.h"
57 #include "libavutil/imgutils.h"
58 #include "libavutil/timestamp.h"
59 #include "libavutil/bprint.h"
60 #include "libavutil/time.h"
61 #include "libavformat/os_support.h"
62
63 #include "libavformat/ffm.h" // not public API
64
65 # include "libavfilter/avcodec.h"
66 # include "libavfilter/avfilter.h"
67 # include "libavfilter/avfiltergraph.h"
68 # include "libavfilter/buffersrc.h"
69 # include "libavfilter/buffersink.h"
70
71 #if HAVE_SYS_RESOURCE_H
72 #include <sys/types.h>
73 #include <sys/resource.h>
74 #elif HAVE_GETPROCESSTIMES
75 #include <windows.h>
76 #endif
77 #if HAVE_GETPROCESSMEMORYINFO
78 #include <windows.h>
79 #include <psapi.h>
80 #endif
81
82 #if HAVE_SYS_SELECT_H
83 #include <sys/select.h>
84 #endif
85
86 #if HAVE_TERMIOS_H
87 #include <fcntl.h>
88 #include <sys/ioctl.h>
89 #include <sys/time.h>
90 #include <termios.h>
91 #elif HAVE_KBHIT
92 #include <conio.h>
93 #endif
94
95 #if HAVE_PTHREADS
96 #include <pthread.h>
97 #endif
98
99 #include <time.h>
100
101 #include "ffmpeg.h"
102 #include "cmdutils.h"
103
104 #include "libavutil/avassert.h"
105
106 const char program_name[] = "ffmpeg";
107 const int program_birth_year = 2000;
108
109 static FILE *vstats_file;
110
111 static void do_video_stats(AVFormatContext *os, OutputStream *ost, int frame_size);
112 static int64_t getutime(void);
113
114 static int run_as_daemon  = 0;
115 static int64_t video_size = 0;
116 static int64_t audio_size = 0;
117 static int64_t subtitle_size = 0;
118 static int64_t extra_size = 0;
119 static int nb_frames_dup = 0;
120 static int nb_frames_drop = 0;
121
122 static int current_time;
123 AVIOContext *progress_avio = NULL;
124
125 static uint8_t *subtitle_out;
126
127 #if HAVE_PTHREADS
128 /* signal to input threads that they should exit; set by the main thread */
129 static int transcoding_finished;
130 #endif
131
132 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
133
134 InputStream **input_streams = NULL;
135 int        nb_input_streams = 0;
136 InputFile   **input_files   = NULL;
137 int        nb_input_files   = 0;
138
139 OutputStream **output_streams = NULL;
140 int         nb_output_streams = 0;
141 OutputFile   **output_files   = NULL;
142 int         nb_output_files   = 0;
143
144 FilterGraph **filtergraphs;
145 int        nb_filtergraphs;
146
147 #if HAVE_TERMIOS_H
148
149 /* init terminal so that we can grab keys */
150 static struct termios oldtty;
151 static int restore_tty;
152 #endif
153
154
155 /* sub2video hack:
156    Convert subtitles to video with alpha to insert them in filter graphs.
157    This is a temporary solution until libavfilter gets real subtitles support.
158  */
159
160
161
162 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
163                                 AVSubtitleRect *r)
164 {
165     uint32_t *pal, *dst2;
166     uint8_t *src, *src2;
167     int x, y;
168
169     if (r->type != SUBTITLE_BITMAP) {
170         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
171         return;
172     }
173     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
174         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
175         return;
176     }
177
178     dst += r->y * dst_linesize + r->x * 4;
179     src = r->pict.data[0];
180     pal = (uint32_t *)r->pict.data[1];
181     for (y = 0; y < r->h; y++) {
182         dst2 = (uint32_t *)dst;
183         src2 = src;
184         for (x = 0; x < r->w; x++)
185             *(dst2++) = pal[*(src2++)];
186         dst += dst_linesize;
187         src += r->pict.linesize[0];
188     }
189 }
190
191 static void sub2video_push_ref(InputStream *ist, int64_t pts)
192 {
193     AVFilterBufferRef *ref = ist->sub2video.ref;
194     int i;
195
196     ist->sub2video.last_pts = ref->pts = pts;
197     for (i = 0; i < ist->nb_filters; i++)
198         av_buffersrc_add_ref(ist->filters[i]->filter,
199                              avfilter_ref_buffer(ref, ~0),
200                              AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
201                              AV_BUFFERSRC_FLAG_NO_COPY |
202                              AV_BUFFERSRC_FLAG_PUSH);
203 }
204
205 static void sub2video_update(InputStream *ist, AVSubtitle *sub)
206 {
207     int w = ist->sub2video.w, h = ist->sub2video.h;
208     AVFilterBufferRef *ref = ist->sub2video.ref;
209     int8_t *dst;
210     int     dst_linesize;
211     int i;
212     int64_t pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ist->st->time_base);
213
214     if (!ref)
215         return;
216     dst          = ref->data    [0];
217     dst_linesize = ref->linesize[0];
218     memset(dst, 0, h * dst_linesize);
219     for (i = 0; i < sub->num_rects; i++)
220         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
221     sub2video_push_ref(ist, pts);
222 }
223
224 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
225 {
226     InputFile *infile = input_files[ist->file_index];
227     int i, j, nb_reqs;
228     int64_t pts2;
229
230     /* When a frame is read from a file, examine all sub2video streams in
231        the same file and send the sub2video frame again. Otherwise, decoded
232        video frames could be accumulating in the filter graph while a filter
233        (possibly overlay) is desperately waiting for a subtitle frame. */
234     for (i = 0; i < infile->nb_streams; i++) {
235         InputStream *ist2 = input_streams[infile->ist_index + i];
236         if (!ist2->sub2video.ref)
237             continue;
238         /* subtitles seem to be usually muxed ahead of other streams;
239            if not, substracting a larger time here is necessary */
240         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
241         /* do not send the heartbeat frame if the subtitle is already ahead */
242         if (pts2 <= ist2->sub2video.last_pts)
243             continue;
244         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
245             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
246         if (nb_reqs)
247             sub2video_push_ref(ist2, pts2);
248     }
249 }
250
251 static void sub2video_flush(InputStream *ist)
252 {
253     int i;
254
255     for (i = 0; i < ist->nb_filters; i++)
256         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
257 }
258
259 /* end of sub2video hack */
260
261 void term_exit(void)
262 {
263     av_log(NULL, AV_LOG_QUIET, "%s", "");
264 #if HAVE_TERMIOS_H
265     if(restore_tty)
266         tcsetattr (0, TCSANOW, &oldtty);
267 #endif
268 }
269
270 static volatile int received_sigterm = 0;
271 static volatile int received_nb_signals = 0;
272
273 static void
274 sigterm_handler(int sig)
275 {
276     received_sigterm = sig;
277     received_nb_signals++;
278     term_exit();
279     if(received_nb_signals > 3)
280         exit(123);
281 }
282
283 void term_init(void)
284 {
285 #if HAVE_TERMIOS_H
286     if(!run_as_daemon){
287         struct termios tty;
288         int istty = 1;
289 #if HAVE_ISATTY
290         istty = isatty(0) && isatty(2);
291 #endif
292         if (istty && tcgetattr (0, &tty) == 0) {
293             oldtty = tty;
294             restore_tty = 1;
295             atexit(term_exit);
296
297             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
298                              |INLCR|IGNCR|ICRNL|IXON);
299             tty.c_oflag |= OPOST;
300             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
301             tty.c_cflag &= ~(CSIZE|PARENB);
302             tty.c_cflag |= CS8;
303             tty.c_cc[VMIN] = 1;
304             tty.c_cc[VTIME] = 0;
305
306             tcsetattr (0, TCSANOW, &tty);
307         }
308         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
309     }
310 #endif
311     avformat_network_deinit();
312
313     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
314     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
315 #ifdef SIGXCPU
316     signal(SIGXCPU, sigterm_handler);
317 #endif
318 }
319
320 /* read a key without blocking */
321 static int read_key(void)
322 {
323     unsigned char ch;
324 #if HAVE_TERMIOS_H
325     int n = 1;
326     struct timeval tv;
327     fd_set rfds;
328
329     FD_ZERO(&rfds);
330     FD_SET(0, &rfds);
331     tv.tv_sec = 0;
332     tv.tv_usec = 0;
333     n = select(1, &rfds, NULL, NULL, &tv);
334     if (n > 0) {
335         n = read(0, &ch, 1);
336         if (n == 1)
337             return ch;
338
339         return n;
340     }
341 #elif HAVE_KBHIT
342 #    if HAVE_PEEKNAMEDPIPE
343     static int is_pipe;
344     static HANDLE input_handle;
345     DWORD dw, nchars;
346     if(!input_handle){
347         input_handle = GetStdHandle(STD_INPUT_HANDLE);
348         is_pipe = !GetConsoleMode(input_handle, &dw);
349     }
350
351     if (stdin->_cnt > 0) {
352         read(0, &ch, 1);
353         return ch;
354     }
355     if (is_pipe) {
356         /* When running under a GUI, you will end here. */
357         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
358             return -1;
359         //Read it
360         if(nchars != 0) {
361             read(0, &ch, 1);
362             return ch;
363         }else{
364             return -1;
365         }
366     }
367 #    endif
368     if(kbhit())
369         return(getch());
370 #endif
371     return -1;
372 }
373
374 static int decode_interrupt_cb(void *ctx)
375 {
376     return received_nb_signals > 1;
377 }
378
379 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
380
381 static void exit_program()
382 {
383     int i, j;
384
385     for (i = 0; i < nb_filtergraphs; i++) {
386         avfilter_graph_free(&filtergraphs[i]->graph);
387         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
388             av_freep(&filtergraphs[i]->inputs[j]->name);
389             av_freep(&filtergraphs[i]->inputs[j]);
390         }
391         av_freep(&filtergraphs[i]->inputs);
392         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
393             av_freep(&filtergraphs[i]->outputs[j]->name);
394             av_freep(&filtergraphs[i]->outputs[j]);
395         }
396         av_freep(&filtergraphs[i]->outputs);
397         av_freep(&filtergraphs[i]);
398     }
399     av_freep(&filtergraphs);
400
401     av_freep(&subtitle_out);
402
403     /* close files */
404     for (i = 0; i < nb_output_files; i++) {
405         AVFormatContext *s = output_files[i]->ctx;
406         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
407             avio_close(s->pb);
408         avformat_free_context(s);
409         av_dict_free(&output_files[i]->opts);
410         av_freep(&output_files[i]);
411     }
412     for (i = 0; i < nb_output_streams; i++) {
413         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
414         while (bsfc) {
415             AVBitStreamFilterContext *next = bsfc->next;
416             av_bitstream_filter_close(bsfc);
417             bsfc = next;
418         }
419         output_streams[i]->bitstream_filters = NULL;
420         avcodec_free_frame(&output_streams[i]->filtered_frame);
421
422         av_freep(&output_streams[i]->forced_keyframes);
423         av_freep(&output_streams[i]->avfilter);
424         av_freep(&output_streams[i]->logfile_prefix);
425         av_freep(&output_streams[i]);
426     }
427     for (i = 0; i < nb_input_files; i++) {
428         avformat_close_input(&input_files[i]->ctx);
429         av_freep(&input_files[i]);
430     }
431     for (i = 0; i < nb_input_streams; i++) {
432         avcodec_free_frame(&input_streams[i]->decoded_frame);
433         av_dict_free(&input_streams[i]->opts);
434         free_buffer_pool(&input_streams[i]->buffer_pool);
435         avfilter_unref_bufferp(&input_streams[i]->sub2video.ref);
436         av_freep(&input_streams[i]->filters);
437         av_freep(&input_streams[i]);
438     }
439
440     if (vstats_file)
441         fclose(vstats_file);
442     av_free(vstats_filename);
443
444     av_freep(&input_streams);
445     av_freep(&input_files);
446     av_freep(&output_streams);
447     av_freep(&output_files);
448
449     uninit_opts();
450
451     avfilter_uninit();
452     avformat_network_deinit();
453
454     if (received_sigterm) {
455         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
456                (int) received_sigterm);
457         exit (255);
458     }
459 }
460
461 void assert_avoptions(AVDictionary *m)
462 {
463     AVDictionaryEntry *t;
464     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
465         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
466         exit(1);
467     }
468 }
469
470 static void assert_codec_experimental(AVCodecContext *c, int encoder)
471 {
472     const char *codec_string = encoder ? "encoder" : "decoder";
473     AVCodec *codec;
474     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
475         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
476         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
477                 "results.\nAdd '-strict experimental' if you want to use it.\n",
478                 codec_string, c->codec->name);
479         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
480         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
481             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
482                    codec_string, codec->name);
483         exit(1);
484     }
485 }
486
487 static void update_benchmark(const char *fmt, ...)
488 {
489     if (do_benchmark_all) {
490         int64_t t = getutime();
491         va_list va;
492         char buf[1024];
493
494         if (fmt) {
495             va_start(va, fmt);
496             vsnprintf(buf, sizeof(buf), fmt, va);
497             va_end(va);
498             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
499         }
500         current_time = t;
501     }
502 }
503
504 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
505 {
506     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
507     AVCodecContext          *avctx = ost->st->codec;
508     int ret;
509
510     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
511         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
512         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
513
514     if ((avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) && pkt->dts != AV_NOPTS_VALUE) {
515         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
516         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
517             av_log(s, max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG,
518                    "st:%d PTS: %"PRId64" DTS: %"PRId64" < %"PRId64" invalid, clipping\n", pkt->stream_index, pkt->pts, pkt->dts, max);
519             if(pkt->pts >= pkt->dts)
520                 pkt->pts = FFMAX(pkt->pts, max);
521             pkt->dts = max;
522         }
523     }
524
525     /*
526      * Audio encoders may split the packets --  #frames in != #packets out.
527      * But there is no reordering, so we can limit the number of output packets
528      * by simply dropping them here.
529      * Counting encoded video frames needs to be done separately because of
530      * reordering, see do_video_out()
531      */
532     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
533         if (ost->frame_number >= ost->max_frames) {
534             av_free_packet(pkt);
535             return;
536         }
537         ost->frame_number++;
538     }
539
540     while (bsfc) {
541         AVPacket new_pkt = *pkt;
542         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
543                                            &new_pkt.data, &new_pkt.size,
544                                            pkt->data, pkt->size,
545                                            pkt->flags & AV_PKT_FLAG_KEY);
546         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
547             uint8_t *t = av_malloc(new_pkt.size + FF_INPUT_BUFFER_PADDING_SIZE); //the new should be a subset of the old so cannot overflow
548             if(t) {
549                 memcpy(t, new_pkt.data, new_pkt.size);
550                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
551                 new_pkt.data = t;
552                 a = 1;
553             } else
554                 a = AVERROR(ENOMEM);
555         }
556         if (a > 0) {
557             av_free_packet(pkt);
558             new_pkt.destruct = av_destruct_packet;
559         } else if (a < 0) {
560             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
561                    bsfc->filter->name, pkt->stream_index,
562                    avctx->codec ? avctx->codec->name : "copy");
563             print_error("", a);
564             if (exit_on_error)
565                 exit(1);
566         }
567         *pkt = new_pkt;
568
569         bsfc = bsfc->next;
570     }
571
572     pkt->stream_index = ost->index;
573
574     if (debug_ts) {
575         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
576                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
577                 av_get_media_type_string(ost->st->codec->codec_type),
578                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
579                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
580                 pkt->size
581               );
582     }
583
584     ret = av_interleaved_write_frame(s, pkt);
585     if (ret < 0) {
586         print_error("av_interleaved_write_frame()", ret);
587         exit(1);
588     }
589 }
590
591 static void close_output_stream(OutputStream *ost)
592 {
593     OutputFile *of = output_files[ost->file_index];
594
595     ost->finished = 1;
596     if (of->shortest) {
597         int i;
598         for (i = 0; i < of->ctx->nb_streams; i++)
599             output_streams[of->ost_index + i]->finished = 1;
600     }
601 }
602
603 static int check_recording_time(OutputStream *ost)
604 {
605     OutputFile *of = output_files[ost->file_index];
606
607     if (of->recording_time != INT64_MAX &&
608         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
609                       AV_TIME_BASE_Q) >= 0) {
610         close_output_stream(ost);
611         return 0;
612     }
613     return 1;
614 }
615
616 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
617                          AVFrame *frame)
618 {
619     AVCodecContext *enc = ost->st->codec;
620     AVPacket pkt;
621     int got_packet = 0;
622
623     av_init_packet(&pkt);
624     pkt.data = NULL;
625     pkt.size = 0;
626
627     if (!check_recording_time(ost))
628         return;
629
630     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
631         frame->pts = ost->sync_opts;
632     ost->sync_opts = frame->pts + frame->nb_samples;
633
634     av_assert0(pkt.size || !pkt.data);
635     update_benchmark(NULL);
636     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
637         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
638         exit(1);
639     }
640     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
641
642     if (got_packet) {
643         if (pkt.pts != AV_NOPTS_VALUE)
644             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
645         if (pkt.dts != AV_NOPTS_VALUE)
646             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
647         if (pkt.duration > 0)
648             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
649
650         if (debug_ts) {
651             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
652                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
653                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
654                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
655         }
656
657         audio_size += pkt.size;
658         write_frame(s, &pkt, ost);
659
660         av_free_packet(&pkt);
661     }
662 }
663
664 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
665 {
666     AVCodecContext *dec;
667     AVPicture *picture2;
668     AVPicture picture_tmp;
669     uint8_t *buf = 0;
670
671     dec = ist->st->codec;
672
673     /* deinterlace : must be done before any resize */
674     if (do_deinterlace) {
675         int size;
676
677         /* create temporary picture */
678         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
679         buf  = av_malloc(size);
680         if (!buf)
681             return;
682
683         picture2 = &picture_tmp;
684         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
685
686         if (avpicture_deinterlace(picture2, picture,
687                                  dec->pix_fmt, dec->width, dec->height) < 0) {
688             /* if error, do not deinterlace */
689             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
690             av_free(buf);
691             buf = NULL;
692             picture2 = picture;
693         }
694     } else {
695         picture2 = picture;
696     }
697
698     if (picture != picture2)
699         *picture = *picture2;
700     *bufp = buf;
701 }
702
703 static void do_subtitle_out(AVFormatContext *s,
704                             OutputStream *ost,
705                             InputStream *ist,
706                             AVSubtitle *sub)
707 {
708     int subtitle_out_max_size = 1024 * 1024;
709     int subtitle_out_size, nb, i;
710     AVCodecContext *enc;
711     AVPacket pkt;
712     int64_t pts;
713
714     if (sub->pts == AV_NOPTS_VALUE) {
715         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
716         if (exit_on_error)
717             exit(1);
718         return;
719     }
720
721     enc = ost->st->codec;
722
723     if (!subtitle_out) {
724         subtitle_out = av_malloc(subtitle_out_max_size);
725     }
726
727     /* Note: DVB subtitle need one packet to draw them and one other
728        packet to clear them */
729     /* XXX: signal it in the codec context ? */
730     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
731         nb = 2;
732     else
733         nb = 1;
734
735     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
736     pts = sub->pts - output_files[ost->file_index]->start_time;
737     for (i = 0; i < nb; i++) {
738         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
739         if (!check_recording_time(ost))
740             return;
741
742         sub->pts = pts;
743         // start_display_time is required to be 0
744         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
745         sub->end_display_time  -= sub->start_display_time;
746         sub->start_display_time = 0;
747         if (i == 1)
748             sub->num_rects = 0;
749         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
750                                                     subtitle_out_max_size, sub);
751         if (subtitle_out_size < 0) {
752             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
753             exit(1);
754         }
755
756         av_init_packet(&pkt);
757         pkt.data = subtitle_out;
758         pkt.size = subtitle_out_size;
759         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
760         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
761         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
762             /* XXX: the pts correction is handled here. Maybe handling
763                it in the codec would be better */
764             if (i == 0)
765                 pkt.pts += 90 * sub->start_display_time;
766             else
767                 pkt.pts += 90 * sub->end_display_time;
768         }
769         subtitle_size += pkt.size;
770         write_frame(s, &pkt, ost);
771     }
772 }
773
774 static void do_video_out(AVFormatContext *s,
775                          OutputStream *ost,
776                          AVFrame *in_picture,
777                          float quality)
778 {
779     int ret, format_video_sync;
780     AVPacket pkt;
781     AVCodecContext *enc = ost->st->codec;
782     int nb_frames, i;
783     double sync_ipts, delta;
784     double duration = 0;
785     int frame_size = 0;
786     InputStream *ist = NULL;
787
788     if (ost->source_index >= 0)
789         ist = input_streams[ost->source_index];
790
791     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
792         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
793
794     sync_ipts = in_picture->pts;
795     delta = sync_ipts - ost->sync_opts + duration;
796
797     /* by default, we output a single frame */
798     nb_frames = 1;
799
800     format_video_sync = video_sync_method;
801     if (format_video_sync == VSYNC_AUTO)
802         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
803
804     switch (format_video_sync) {
805     case VSYNC_CFR:
806         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
807         if (delta < -1.1)
808             nb_frames = 0;
809         else if (delta > 1.1)
810             nb_frames = lrintf(delta);
811         break;
812     case VSYNC_VFR:
813         if (delta <= -0.6)
814             nb_frames = 0;
815         else if (delta > 0.6)
816             ost->sync_opts = lrint(sync_ipts);
817         break;
818     case VSYNC_DROP:
819     case VSYNC_PASSTHROUGH:
820         ost->sync_opts = lrint(sync_ipts);
821         break;
822     default:
823         av_assert0(0);
824     }
825
826     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
827     if (nb_frames == 0) {
828         nb_frames_drop++;
829         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
830         return;
831     } else if (nb_frames > 1) {
832         if (nb_frames > dts_error_threshold * 30) {
833             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
834             nb_frames_drop++;
835             return;
836         }
837         nb_frames_dup += nb_frames - 1;
838         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
839     }
840
841   /* duplicates frame if needed */
842   for (i = 0; i < nb_frames; i++) {
843     av_init_packet(&pkt);
844     pkt.data = NULL;
845     pkt.size = 0;
846
847     in_picture->pts = ost->sync_opts;
848
849     if (!check_recording_time(ost))
850         return;
851
852     if (s->oformat->flags & AVFMT_RAWPICTURE &&
853         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
854         /* raw pictures are written as AVPicture structure to
855            avoid any copies. We support temporarily the older
856            method. */
857         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
858         enc->coded_frame->top_field_first  = in_picture->top_field_first;
859         pkt.data   = (uint8_t *)in_picture;
860         pkt.size   =  sizeof(AVPicture);
861         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
862         pkt.flags |= AV_PKT_FLAG_KEY;
863
864         video_size += pkt.size;
865         write_frame(s, &pkt, ost);
866     } else {
867         int got_packet;
868         AVFrame big_picture;
869
870         big_picture = *in_picture;
871         /* better than nothing: use input picture interlaced
872            settings */
873         big_picture.interlaced_frame = in_picture->interlaced_frame;
874         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
875             if (ost->top_field_first == -1)
876                 big_picture.top_field_first = in_picture->top_field_first;
877             else
878                 big_picture.top_field_first = !!ost->top_field_first;
879         }
880
881         /* handles same_quant here. This is not correct because it may
882            not be a global option */
883         big_picture.quality = quality;
884         if (!enc->me_threshold)
885             big_picture.pict_type = 0;
886         if (ost->forced_kf_index < ost->forced_kf_count &&
887             big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
888             big_picture.pict_type = AV_PICTURE_TYPE_I;
889             ost->forced_kf_index++;
890         }
891         update_benchmark(NULL);
892         ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
893         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
894         if (ret < 0) {
895             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
896             exit(1);
897         }
898
899         if (got_packet) {
900             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
901                 pkt.pts = ost->sync_opts;
902
903             if (pkt.pts != AV_NOPTS_VALUE)
904                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
905             if (pkt.dts != AV_NOPTS_VALUE)
906                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
907
908             if (debug_ts) {
909                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
910                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
911                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
912                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
913             }
914
915             frame_size = pkt.size;
916             video_size += pkt.size;
917             write_frame(s, &pkt, ost);
918             av_free_packet(&pkt);
919
920             /* if two pass, output log */
921             if (ost->logfile && enc->stats_out) {
922                 fprintf(ost->logfile, "%s", enc->stats_out);
923             }
924         }
925     }
926     ost->sync_opts++;
927     /*
928      * For video, number of frames in == number of packets out.
929      * But there may be reordering, so we can't throw away frames on encoder
930      * flush, we need to limit them here, before they go into encoder.
931      */
932     ost->frame_number++;
933   }
934
935     if (vstats_filename && frame_size)
936         do_video_stats(output_files[ost->file_index]->ctx, ost, frame_size);
937 }
938
939 static double psnr(double d)
940 {
941     return -10.0 * log(d) / log(10.0);
942 }
943
944 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
945                            int frame_size)
946 {
947     AVCodecContext *enc;
948     int frame_number;
949     double ti1, bitrate, avg_bitrate;
950
951     /* this is executed just the first time do_video_stats is called */
952     if (!vstats_file) {
953         vstats_file = fopen(vstats_filename, "w");
954         if (!vstats_file) {
955             perror("fopen");
956             exit(1);
957         }
958     }
959
960     enc = ost->st->codec;
961     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
962         frame_number = ost->frame_number;
963         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
964         if (enc->flags&CODEC_FLAG_PSNR)
965             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
966
967         fprintf(vstats_file,"f_size= %6d ", frame_size);
968         /* compute pts value */
969         ti1 = ost->sync_opts * av_q2d(enc->time_base);
970         if (ti1 < 0.01)
971             ti1 = 0.01;
972
973         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
974         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
975         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
976                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
977         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
978     }
979 }
980
981 /**
982  * Get and encode new output from any of the filtergraphs, without causing
983  * activity.
984  *
985  * @return  0 for success, <0 for severe errors
986  */
987 static int reap_filters(void)
988 {
989     AVFilterBufferRef *picref;
990     AVFrame *filtered_frame = NULL;
991     int i;
992     int64_t frame_pts;
993
994     /* Reap all buffers present in the buffer sinks */
995     for (i = 0; i < nb_output_streams; i++) {
996         OutputStream *ost = output_streams[i];
997         OutputFile    *of = output_files[ost->file_index];
998         int ret = 0;
999
1000         if (!ost->filter)
1001             continue;
1002
1003         if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1004             return AVERROR(ENOMEM);
1005         } else
1006             avcodec_get_frame_defaults(ost->filtered_frame);
1007         filtered_frame = ost->filtered_frame;
1008
1009         while (1) {
1010             ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
1011                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1012             if (ret < 0) {
1013                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1014                     char buf[256];
1015                     av_strerror(ret, buf, sizeof(buf));
1016                     av_log(NULL, AV_LOG_WARNING,
1017                            "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
1018                 }
1019                 break;
1020             }
1021             frame_pts = AV_NOPTS_VALUE;
1022             if (picref->pts != AV_NOPTS_VALUE) {
1023                 filtered_frame->pts = frame_pts = av_rescale_q(picref->pts,
1024                                                 ost->filter->filter->inputs[0]->time_base,
1025                                                 ost->st->codec->time_base) -
1026                                     av_rescale_q(of->start_time,
1027                                                 AV_TIME_BASE_Q,
1028                                                 ost->st->codec->time_base);
1029
1030                 if (of->start_time && filtered_frame->pts < 0) {
1031                     avfilter_unref_buffer(picref);
1032                     continue;
1033                 }
1034             }
1035             //if (ost->source_index >= 0)
1036             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1037
1038
1039             switch (ost->filter->filter->inputs[0]->type) {
1040             case AVMEDIA_TYPE_VIDEO:
1041                 avfilter_copy_buf_props(filtered_frame, picref);
1042                 filtered_frame->pts = frame_pts;
1043                 if (!ost->frame_aspect_ratio)
1044                     ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
1045
1046                 do_video_out(of->ctx, ost, filtered_frame,
1047                              same_quant ? ost->last_quality :
1048                                           ost->st->codec->global_quality);
1049                 break;
1050             case AVMEDIA_TYPE_AUDIO:
1051                 avfilter_copy_buf_props(filtered_frame, picref);
1052                 filtered_frame->pts = frame_pts;
1053                 do_audio_out(of->ctx, ost, filtered_frame);
1054                 break;
1055             default:
1056                 // TODO support subtitle filters
1057                 av_assert0(0);
1058             }
1059
1060             avfilter_unref_buffer(picref);
1061         }
1062     }
1063
1064     return 0;
1065 }
1066
1067 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1068 {
1069     char buf[1024];
1070     AVBPrint buf_script;
1071     OutputStream *ost;
1072     AVFormatContext *oc;
1073     int64_t total_size;
1074     AVCodecContext *enc;
1075     int frame_number, vid, i;
1076     double bitrate;
1077     int64_t pts = INT64_MIN;
1078     static int64_t last_time = -1;
1079     static int qp_histogram[52];
1080     int hours, mins, secs, us;
1081
1082     if (!print_stats && !is_last_report && !progress_avio)
1083         return;
1084
1085     if (!is_last_report) {
1086         if (last_time == -1) {
1087             last_time = cur_time;
1088             return;
1089         }
1090         if ((cur_time - last_time) < 500000)
1091             return;
1092         last_time = cur_time;
1093     }
1094
1095
1096     oc = output_files[0]->ctx;
1097
1098     total_size = avio_size(oc->pb);
1099     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
1100         total_size = avio_tell(oc->pb);
1101         if (total_size < 0)
1102             total_size = 0;
1103     }
1104
1105     buf[0] = '\0';
1106     vid = 0;
1107     av_bprint_init(&buf_script, 0, 1);
1108     for (i = 0; i < nb_output_streams; i++) {
1109         float q = -1;
1110         ost = output_streams[i];
1111         enc = ost->st->codec;
1112         if (!ost->stream_copy && enc->coded_frame)
1113             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1114         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1115             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1116             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1117                        ost->file_index, ost->index, q);
1118         }
1119         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1120             float fps, t = (cur_time-timer_start) / 1000000.0;
1121
1122             frame_number = ost->frame_number;
1123             fps = t > 1 ? frame_number / t : 0;
1124             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1125                      frame_number, fps < 9.95, fps, q);
1126             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1127             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1128             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1129                        ost->file_index, ost->index, q);
1130             if (is_last_report)
1131                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1132             if (qp_hist) {
1133                 int j;
1134                 int qp = lrintf(q);
1135                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1136                     qp_histogram[qp]++;
1137                 for (j = 0; j < 32; j++)
1138                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1139             }
1140             if (enc->flags&CODEC_FLAG_PSNR) {
1141                 int j;
1142                 double error, error_sum = 0;
1143                 double scale, scale_sum = 0;
1144                 double p;
1145                 char type[3] = { 'Y','U','V' };
1146                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1147                 for (j = 0; j < 3; j++) {
1148                     if (is_last_report) {
1149                         error = enc->error[j];
1150                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1151                     } else {
1152                         error = enc->coded_frame->error[j];
1153                         scale = enc->width * enc->height * 255.0 * 255.0;
1154                     }
1155                     if (j)
1156                         scale /= 4;
1157                     error_sum += error;
1158                     scale_sum += scale;
1159                     p = psnr(error / scale);
1160                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1161                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1162                                ost->file_index, ost->index, type[i] | 32, p);
1163                 }
1164                 p = psnr(error_sum / scale_sum);
1165                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1166                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1167                            ost->file_index, ost->index, p);
1168             }
1169             vid = 1;
1170         }
1171         /* compute min output value */
1172         if ((is_last_report || !ost->finished) && ost->st->pts.val != AV_NOPTS_VALUE)
1173             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1174                                           ost->st->time_base, AV_TIME_BASE_Q));
1175     }
1176
1177     secs = pts / AV_TIME_BASE;
1178     us = pts % AV_TIME_BASE;
1179     mins = secs / 60;
1180     secs %= 60;
1181     hours = mins / 60;
1182     mins %= 60;
1183
1184     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1185
1186     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1187              "size=%8.0fkB time=", total_size / 1024.0);
1188     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1189              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1190              (100 * us) / AV_TIME_BASE);
1191     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1192              "bitrate=%6.1fkbits/s", bitrate);
1193     av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1194     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1195     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1196                hours, mins, secs, us);
1197
1198     if (nb_frames_dup || nb_frames_drop)
1199         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1200                 nb_frames_dup, nb_frames_drop);
1201     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1202     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1203
1204     if (print_stats || is_last_report) {
1205     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1206
1207     fflush(stderr);
1208     }
1209
1210     if (progress_avio) {
1211         av_bprintf(&buf_script, "progress=%s\n",
1212                    is_last_report ? "end" : "continue");
1213         avio_write(progress_avio, buf_script.str,
1214                    FFMIN(buf_script.len, buf_script.size - 1));
1215         avio_flush(progress_avio);
1216         av_bprint_finalize(&buf_script, NULL);
1217         if (is_last_report) {
1218             avio_close(progress_avio);
1219             progress_avio = NULL;
1220         }
1221     }
1222
1223     if (is_last_report) {
1224         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1225         av_log(NULL, AV_LOG_INFO, "\n");
1226         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1227                video_size / 1024.0,
1228                audio_size / 1024.0,
1229                subtitle_size / 1024.0,
1230                extra_size / 1024.0,
1231                100.0 * (total_size - raw) / raw
1232         );
1233         if(video_size + audio_size + subtitle_size + extra_size == 0){
1234             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1235         }
1236     }
1237 }
1238
1239 static void flush_encoders(void)
1240 {
1241     int i, ret;
1242
1243     for (i = 0; i < nb_output_streams; i++) {
1244         OutputStream   *ost = output_streams[i];
1245         AVCodecContext *enc = ost->st->codec;
1246         AVFormatContext *os = output_files[ost->file_index]->ctx;
1247         int stop_encoding = 0;
1248
1249         if (!ost->encoding_needed)
1250             continue;
1251
1252         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1253             continue;
1254         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1255             continue;
1256
1257         for (;;) {
1258             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1259             const char *desc;
1260             int64_t *size;
1261
1262             switch (ost->st->codec->codec_type) {
1263             case AVMEDIA_TYPE_AUDIO:
1264                 encode = avcodec_encode_audio2;
1265                 desc   = "Audio";
1266                 size   = &audio_size;
1267                 break;
1268             case AVMEDIA_TYPE_VIDEO:
1269                 encode = avcodec_encode_video2;
1270                 desc   = "Video";
1271                 size   = &video_size;
1272                 break;
1273             default:
1274                 stop_encoding = 1;
1275             }
1276
1277             if (encode) {
1278                 AVPacket pkt;
1279                 int got_packet;
1280                 av_init_packet(&pkt);
1281                 pkt.data = NULL;
1282                 pkt.size = 0;
1283
1284                 update_benchmark(NULL);
1285                 ret = encode(enc, &pkt, NULL, &got_packet);
1286                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1287                 if (ret < 0) {
1288                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1289                     exit(1);
1290                 }
1291                 *size += pkt.size;
1292                 if (ost->logfile && enc->stats_out) {
1293                     fprintf(ost->logfile, "%s", enc->stats_out);
1294                 }
1295                 if (!got_packet) {
1296                     stop_encoding = 1;
1297                     break;
1298                 }
1299                 if (pkt.pts != AV_NOPTS_VALUE)
1300                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1301                 if (pkt.dts != AV_NOPTS_VALUE)
1302                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1303                 write_frame(os, &pkt, ost);
1304             }
1305
1306             if (stop_encoding)
1307                 break;
1308         }
1309     }
1310 }
1311
1312 /*
1313  * Check whether a packet from ist should be written into ost at this time
1314  */
1315 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1316 {
1317     OutputFile *of = output_files[ost->file_index];
1318     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1319
1320     if (ost->source_index != ist_index)
1321         return 0;
1322
1323     if (of->start_time && ist->pts < of->start_time)
1324         return 0;
1325
1326     return 1;
1327 }
1328
1329 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1330 {
1331     OutputFile *of = output_files[ost->file_index];
1332     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1333     AVPicture pict;
1334     AVPacket opkt;
1335
1336     av_init_packet(&opkt);
1337
1338     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1339         !ost->copy_initial_nonkeyframes)
1340         return;
1341
1342     if (!ost->frame_number && ist->pts < of->start_time &&
1343         !ost->copy_prior_start)
1344         return;
1345
1346     if (of->recording_time != INT64_MAX &&
1347         ist->pts >= of->recording_time + of->start_time) {
1348         close_output_stream(ost);
1349         return;
1350     }
1351
1352     /* force the input stream PTS */
1353     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1354         audio_size += pkt->size;
1355     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1356         video_size += pkt->size;
1357         ost->sync_opts++;
1358     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1359         subtitle_size += pkt->size;
1360     }
1361
1362     if (pkt->pts != AV_NOPTS_VALUE)
1363         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1364     else
1365         opkt.pts = AV_NOPTS_VALUE;
1366
1367     if (pkt->dts == AV_NOPTS_VALUE)
1368         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1369     else
1370         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1371     opkt.dts -= ost_tb_start_time;
1372
1373     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1374     opkt.flags    = pkt->flags;
1375
1376     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1377     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1378        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1379        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1380        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1381        ) {
1382         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1383             opkt.destruct = av_destruct_packet;
1384     } else {
1385         opkt.data = pkt->data;
1386         opkt.size = pkt->size;
1387     }
1388
1389     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1390         /* store AVPicture in AVPacket, as expected by the output format */
1391         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1392         opkt.data = (uint8_t *)&pict;
1393         opkt.size = sizeof(AVPicture);
1394         opkt.flags |= AV_PKT_FLAG_KEY;
1395     }
1396
1397     write_frame(of->ctx, &opkt, ost);
1398     ost->st->codec->frame_number++;
1399     av_free_packet(&opkt);
1400 }
1401
1402 static void rate_emu_sleep(InputStream *ist)
1403 {
1404     if (input_files[ist->file_index]->rate_emu) {
1405         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
1406         int64_t now = av_gettime() - ist->start;
1407         if (pts > now)
1408             av_usleep(pts - now);
1409     }
1410 }
1411
1412 int guess_input_channel_layout(InputStream *ist)
1413 {
1414     AVCodecContext *dec = ist->st->codec;
1415
1416     if (!dec->channel_layout) {
1417         char layout_name[256];
1418
1419         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1420         if (!dec->channel_layout)
1421             return 0;
1422         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1423                                      dec->channels, dec->channel_layout);
1424         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1425                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1426     }
1427     return 1;
1428 }
1429
1430 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1431 {
1432     AVFrame *decoded_frame;
1433     AVCodecContext *avctx = ist->st->codec;
1434     int i, ret, resample_changed;
1435     AVRational decoded_frame_tb;
1436
1437     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1438         return AVERROR(ENOMEM);
1439     else
1440         avcodec_get_frame_defaults(ist->decoded_frame);
1441     decoded_frame = ist->decoded_frame;
1442
1443     update_benchmark(NULL);
1444     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1445     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1446
1447     if (ret >= 0 && avctx->sample_rate <= 0) {
1448         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1449         ret = AVERROR_INVALIDDATA;
1450     }
1451
1452     if (!*got_output || ret < 0) {
1453         if (!pkt->size) {
1454             for (i = 0; i < ist->nb_filters; i++)
1455                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1456         }
1457         return ret;
1458     }
1459
1460 #if 1
1461     /* increment next_dts to use for the case where the input stream does not
1462        have timestamps or there are multiple frames in the packet */
1463     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1464                      avctx->sample_rate;
1465     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1466                      avctx->sample_rate;
1467 #endif
1468
1469     rate_emu_sleep(ist);
1470
1471     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1472                        ist->resample_channels       != avctx->channels               ||
1473                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1474                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1475     if (resample_changed) {
1476         char layout1[64], layout2[64];
1477
1478         if (!guess_input_channel_layout(ist)) {
1479             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1480                    "layout for Input Stream #%d.%d\n", ist->file_index,
1481                    ist->st->index);
1482             exit(1);
1483         }
1484         decoded_frame->channel_layout = avctx->channel_layout;
1485
1486         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1487                                      ist->resample_channel_layout);
1488         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1489                                      decoded_frame->channel_layout);
1490
1491         av_log(NULL, AV_LOG_INFO,
1492                "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",
1493                ist->file_index, ist->st->index,
1494                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1495                ist->resample_channels, layout1,
1496                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1497                avctx->channels, layout2);
1498
1499         ist->resample_sample_fmt     = decoded_frame->format;
1500         ist->resample_sample_rate    = decoded_frame->sample_rate;
1501         ist->resample_channel_layout = decoded_frame->channel_layout;
1502         ist->resample_channels       = avctx->channels;
1503
1504         for (i = 0; i < nb_filtergraphs; i++)
1505             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1506                 FilterGraph *fg = filtergraphs[i];
1507                 int j;
1508                 if (configure_filtergraph(fg) < 0) {
1509                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1510                     exit(1);
1511                 }
1512                 for (j = 0; j < fg->nb_outputs; j++) {
1513                     OutputStream *ost = fg->outputs[j]->ost;
1514                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1515                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1516                         av_buffersink_set_frame_size(ost->filter->filter,
1517                                                      ost->st->codec->frame_size);
1518                 }
1519             }
1520     }
1521
1522     /* if the decoder provides a pts, use it instead of the last packet pts.
1523        the decoder could be delaying output by a packet or more. */
1524     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1525         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1526         decoded_frame_tb   = avctx->time_base;
1527     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1528         decoded_frame->pts = decoded_frame->pkt_pts;
1529         pkt->pts           = AV_NOPTS_VALUE;
1530         decoded_frame_tb   = ist->st->time_base;
1531     } else if (pkt->pts != AV_NOPTS_VALUE) {
1532         decoded_frame->pts = pkt->pts;
1533         pkt->pts           = AV_NOPTS_VALUE;
1534         decoded_frame_tb   = ist->st->time_base;
1535     }else {
1536         decoded_frame->pts = ist->dts;
1537         decoded_frame_tb   = AV_TIME_BASE_Q;
1538     }
1539     if (decoded_frame->pts != AV_NOPTS_VALUE)
1540         decoded_frame->pts = av_rescale_q(decoded_frame->pts,
1541                                           decoded_frame_tb,
1542                                           (AVRational){1, ist->st->codec->sample_rate});
1543     for (i = 0; i < ist->nb_filters; i++)
1544         av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame,
1545                                AV_BUFFERSRC_FLAG_PUSH);
1546
1547     decoded_frame->pts = AV_NOPTS_VALUE;
1548
1549     return ret;
1550 }
1551
1552 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1553 {
1554     AVFrame *decoded_frame;
1555     void *buffer_to_free = NULL;
1556     int i, ret = 0, resample_changed;
1557     int64_t best_effort_timestamp;
1558     AVRational *frame_sample_aspect;
1559     float quality;
1560
1561     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1562         return AVERROR(ENOMEM);
1563     else
1564         avcodec_get_frame_defaults(ist->decoded_frame);
1565     decoded_frame = ist->decoded_frame;
1566     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1567
1568     update_benchmark(NULL);
1569     ret = avcodec_decode_video2(ist->st->codec,
1570                                 decoded_frame, got_output, pkt);
1571     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1572     if (!*got_output || ret < 0) {
1573         if (!pkt->size) {
1574             for (i = 0; i < ist->nb_filters; i++)
1575                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1576         }
1577         return ret;
1578     }
1579
1580     quality = same_quant ? decoded_frame->quality : 0;
1581
1582     if(ist->top_field_first>=0)
1583         decoded_frame->top_field_first = ist->top_field_first;
1584
1585     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1586     if(best_effort_timestamp != AV_NOPTS_VALUE)
1587         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1588
1589     if (debug_ts) {
1590         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1591                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1592                 ist->st->index, av_ts2str(decoded_frame->pts),
1593                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1594                 best_effort_timestamp,
1595                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1596                 decoded_frame->key_frame, decoded_frame->pict_type);
1597     }
1598
1599     pkt->size = 0;
1600     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1601
1602     rate_emu_sleep(ist);
1603
1604     if (ist->st->sample_aspect_ratio.num)
1605         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1606
1607     resample_changed = ist->resample_width   != decoded_frame->width  ||
1608                        ist->resample_height  != decoded_frame->height ||
1609                        ist->resample_pix_fmt != decoded_frame->format;
1610     if (resample_changed) {
1611         av_log(NULL, AV_LOG_INFO,
1612                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1613                ist->file_index, ist->st->index,
1614                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1615                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1616
1617         ist->resample_width   = decoded_frame->width;
1618         ist->resample_height  = decoded_frame->height;
1619         ist->resample_pix_fmt = decoded_frame->format;
1620
1621         for (i = 0; i < nb_filtergraphs; i++)
1622             if (ist_in_filtergraph(filtergraphs[i], ist) &&
1623                 configure_filtergraph(filtergraphs[i]) < 0) {
1624                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1625                 exit(1);
1626             }
1627     }
1628
1629     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1630     for (i = 0; i < ist->nb_filters; i++) {
1631         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
1632                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
1633                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
1634         // XXX what an ugly hack
1635         if (ist->filters[i]->graph->nb_outputs == 1)
1636             ist->filters[i]->graph->outputs[0]->ost->last_quality = quality;
1637
1638         if (!frame_sample_aspect->num)
1639             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1640         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
1641             FrameBuffer      *buf = decoded_frame->opaque;
1642             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1643                                         decoded_frame->data, decoded_frame->linesize,
1644                                         AV_PERM_READ | AV_PERM_PRESERVE,
1645                                         ist->st->codec->width, ist->st->codec->height,
1646                                         ist->st->codec->pix_fmt);
1647
1648             avfilter_copy_frame_props(fb, decoded_frame);
1649             fb->buf->priv           = buf;
1650             fb->buf->free           = filter_release_buffer;
1651
1652             av_assert0(buf->refcount>0);
1653             buf->refcount++;
1654             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
1655                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
1656                                  AV_BUFFERSRC_FLAG_NO_COPY |
1657                                  AV_BUFFERSRC_FLAG_PUSH);
1658         } else
1659         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, AV_BUFFERSRC_FLAG_PUSH)<0) {
1660             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
1661             exit(1);
1662         }
1663
1664     }
1665
1666     av_free(buffer_to_free);
1667     return ret;
1668 }
1669
1670 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1671 {
1672     AVSubtitle subtitle;
1673     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1674                                           &subtitle, got_output, pkt);
1675     if (ret < 0 || !*got_output) {
1676         if (!pkt->size)
1677             sub2video_flush(ist);
1678         return ret;
1679     }
1680
1681     if (ist->fix_sub_duration) {
1682         if (ist->prev_sub.got_output) {
1683             int end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1684                                  1000, AV_TIME_BASE);
1685             if (end < ist->prev_sub.subtitle.end_display_time) {
1686                 av_log(ist->st->codec, AV_LOG_DEBUG,
1687                        "Subtitle duration reduced from %d to %d\n",
1688                        ist->prev_sub.subtitle.end_display_time, end);
1689                 ist->prev_sub.subtitle.end_display_time = end;
1690             }
1691         }
1692         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1693         FFSWAP(int,        ret,         ist->prev_sub.ret);
1694         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1695     }
1696
1697     sub2video_update(ist, &subtitle);
1698
1699     if (!*got_output || !subtitle.num_rects)
1700         return ret;
1701
1702     rate_emu_sleep(ist);
1703
1704     for (i = 0; i < nb_output_streams; i++) {
1705         OutputStream *ost = output_streams[i];
1706
1707         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1708             continue;
1709
1710         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
1711     }
1712
1713     avsubtitle_free(&subtitle);
1714     return ret;
1715 }
1716
1717 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1718 static int output_packet(InputStream *ist, const AVPacket *pkt)
1719 {
1720     int ret = 0, i;
1721     int got_output;
1722
1723     AVPacket avpkt;
1724     if (!ist->saw_first_ts) {
1725         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;
1726         ist->pts = 0;
1727         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1728             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1729             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1730         }
1731         ist->saw_first_ts = 1;
1732     }
1733
1734     if (ist->next_dts == AV_NOPTS_VALUE)
1735         ist->next_dts = ist->dts;
1736     if (ist->next_pts == AV_NOPTS_VALUE)
1737         ist->next_pts = ist->pts;
1738
1739     if (pkt == NULL) {
1740         /* EOF handling */
1741         av_init_packet(&avpkt);
1742         avpkt.data = NULL;
1743         avpkt.size = 0;
1744         goto handle_eof;
1745     } else {
1746         avpkt = *pkt;
1747     }
1748
1749     if (pkt->dts != AV_NOPTS_VALUE) {
1750         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1751         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1752             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1753     }
1754
1755     // while we have more to decode or while the decoder did output something on EOF
1756     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1757         int duration;
1758     handle_eof:
1759
1760         ist->pts = ist->next_pts;
1761         ist->dts = ist->next_dts;
1762
1763         if (avpkt.size && avpkt.size != pkt->size) {
1764             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1765                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1766             ist->showed_multi_packet_warning = 1;
1767         }
1768
1769         switch (ist->st->codec->codec_type) {
1770         case AVMEDIA_TYPE_AUDIO:
1771             ret = decode_audio    (ist, &avpkt, &got_output);
1772             break;
1773         case AVMEDIA_TYPE_VIDEO:
1774             ret = decode_video    (ist, &avpkt, &got_output);
1775             if (avpkt.duration) {
1776                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1777             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1778                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1779                 duration = ((int64_t)AV_TIME_BASE *
1780                                 ist->st->codec->time_base.num * ticks) /
1781                                 ist->st->codec->time_base.den;
1782             } else
1783                 duration = 0;
1784
1785             if(ist->dts != AV_NOPTS_VALUE && duration) {
1786                 ist->next_dts += duration;
1787             }else
1788                 ist->next_dts = AV_NOPTS_VALUE;
1789
1790             if (got_output)
1791                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1792             break;
1793         case AVMEDIA_TYPE_SUBTITLE:
1794             ret = transcode_subtitles(ist, &avpkt, &got_output);
1795             break;
1796         default:
1797             return -1;
1798         }
1799
1800         if (ret < 0)
1801             return ret;
1802
1803         avpkt.dts=
1804         avpkt.pts= AV_NOPTS_VALUE;
1805
1806         // touch data and size only if not EOF
1807         if (pkt) {
1808             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1809                 ret = avpkt.size;
1810             avpkt.data += ret;
1811             avpkt.size -= ret;
1812         }
1813         if (!got_output) {
1814             continue;
1815         }
1816     }
1817
1818     /* handle stream copy */
1819     if (!ist->decoding_needed) {
1820         rate_emu_sleep(ist);
1821         ist->dts = ist->next_dts;
1822         switch (ist->st->codec->codec_type) {
1823         case AVMEDIA_TYPE_AUDIO:
1824             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1825                              ist->st->codec->sample_rate;
1826             break;
1827         case AVMEDIA_TYPE_VIDEO:
1828             if (pkt->duration) {
1829                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1830             } else if(ist->st->codec->time_base.num != 0) {
1831                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1832                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1833                                   ist->st->codec->time_base.num * ticks) /
1834                                   ist->st->codec->time_base.den;
1835             }
1836             break;
1837         }
1838         ist->pts = ist->dts;
1839         ist->next_pts = ist->next_dts;
1840     }
1841     for (i = 0; pkt && i < nb_output_streams; i++) {
1842         OutputStream *ost = output_streams[i];
1843
1844         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1845             continue;
1846
1847         do_streamcopy(ist, ost, pkt);
1848     }
1849
1850     return 0;
1851 }
1852
1853 static void print_sdp(void)
1854 {
1855     char sdp[2048];
1856     int i;
1857     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1858
1859     if (!avc)
1860         exit(1);
1861     for (i = 0; i < nb_output_files; i++)
1862         avc[i] = output_files[i]->ctx;
1863
1864     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1865     printf("SDP:\n%s\n", sdp);
1866     fflush(stdout);
1867     av_freep(&avc);
1868 }
1869
1870 static int init_input_stream(int ist_index, char *error, int error_len)
1871 {
1872     InputStream *ist = input_streams[ist_index];
1873
1874     if (ist->decoding_needed) {
1875         AVCodec *codec = ist->dec;
1876         if (!codec) {
1877             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1878                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1879             return AVERROR(EINVAL);
1880         }
1881
1882         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
1883         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
1884             ist->st->codec->get_buffer     = codec_get_buffer;
1885             ist->st->codec->release_buffer = codec_release_buffer;
1886             ist->st->codec->opaque         = &ist->buffer_pool;
1887         }
1888
1889         if (!av_dict_get(ist->opts, "threads", NULL, 0))
1890             av_dict_set(&ist->opts, "threads", "auto", 0);
1891         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
1892             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1893                     ist->file_index, ist->st->index);
1894             return AVERROR(EINVAL);
1895         }
1896         assert_codec_experimental(ist->st->codec, 0);
1897         assert_avoptions(ist->opts);
1898     }
1899
1900     ist->next_pts = AV_NOPTS_VALUE;
1901     ist->next_dts = AV_NOPTS_VALUE;
1902     ist->is_start = 1;
1903
1904     return 0;
1905 }
1906
1907 static InputStream *get_input_stream(OutputStream *ost)
1908 {
1909     if (ost->source_index >= 0)
1910         return input_streams[ost->source_index];
1911     return NULL;
1912 }
1913
1914 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1915                                     AVCodecContext *avctx)
1916 {
1917     char *p;
1918     int n = 1, i;
1919     int64_t t;
1920
1921     for (p = kf; *p; p++)
1922         if (*p == ',')
1923             n++;
1924     ost->forced_kf_count = n;
1925     ost->forced_kf_pts   = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1926     if (!ost->forced_kf_pts) {
1927         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1928         exit(1);
1929     }
1930
1931     p = kf;
1932     for (i = 0; i < n; i++) {
1933         char *next = strchr(p, ',');
1934
1935         if (next)
1936             *next++ = 0;
1937
1938         t = parse_time_or_die("force_key_frames", p, 1);
1939         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1940
1941         p = next;
1942     }
1943 }
1944
1945 static void report_new_stream(int input_index, AVPacket *pkt)
1946 {
1947     InputFile *file = input_files[input_index];
1948     AVStream *st = file->ctx->streams[pkt->stream_index];
1949
1950     if (pkt->stream_index < file->nb_streams_warn)
1951         return;
1952     av_log(file->ctx, AV_LOG_WARNING,
1953            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
1954            av_get_media_type_string(st->codec->codec_type),
1955            input_index, pkt->stream_index,
1956            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
1957     file->nb_streams_warn = pkt->stream_index + 1;
1958 }
1959
1960 static int transcode_init(void)
1961 {
1962     int ret = 0, i, j, k;
1963     AVFormatContext *oc;
1964     AVCodecContext *codec;
1965     OutputStream *ost;
1966     InputStream *ist;
1967     char error[1024];
1968     int want_sdp = 1;
1969
1970     /* init framerate emulation */
1971     for (i = 0; i < nb_input_files; i++) {
1972         InputFile *ifile = input_files[i];
1973         if (ifile->rate_emu)
1974             for (j = 0; j < ifile->nb_streams; j++)
1975                 input_streams[j + ifile->ist_index]->start = av_gettime();
1976     }
1977
1978     /* output stream init */
1979     for (i = 0; i < nb_output_files; i++) {
1980         oc = output_files[i]->ctx;
1981         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
1982             av_dump_format(oc, i, oc->filename, 1);
1983             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
1984             return AVERROR(EINVAL);
1985         }
1986     }
1987
1988     /* init complex filtergraphs */
1989     for (i = 0; i < nb_filtergraphs; i++)
1990         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
1991             return ret;
1992
1993     /* for each output stream, we compute the right encoding parameters */
1994     for (i = 0; i < nb_output_streams; i++) {
1995         AVCodecContext *icodec = NULL;
1996         ost = output_streams[i];
1997         oc  = output_files[ost->file_index]->ctx;
1998         ist = get_input_stream(ost);
1999
2000         if (ost->attachment_filename)
2001             continue;
2002
2003         codec  = ost->st->codec;
2004
2005         if (ist) {
2006             icodec = ist->st->codec;
2007
2008             ost->st->disposition          = ist->st->disposition;
2009             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2010             codec->chroma_sample_location = icodec->chroma_sample_location;
2011         }
2012
2013         if (ost->stream_copy) {
2014             uint64_t extra_size;
2015
2016             av_assert0(ist && !ost->filter);
2017
2018             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2019
2020             if (extra_size > INT_MAX) {
2021                 return AVERROR(EINVAL);
2022             }
2023
2024             /* if stream_copy is selected, no need to decode or encode */
2025             codec->codec_id   = icodec->codec_id;
2026             codec->codec_type = icodec->codec_type;
2027
2028             if (!codec->codec_tag) {
2029                 if (!oc->oformat->codec_tag ||
2030                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2031                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2032                     codec->codec_tag = icodec->codec_tag;
2033             }
2034
2035             codec->bit_rate       = icodec->bit_rate;
2036             codec->rc_max_rate    = icodec->rc_max_rate;
2037             codec->rc_buffer_size = icodec->rc_buffer_size;
2038             codec->field_order    = icodec->field_order;
2039             codec->extradata      = av_mallocz(extra_size);
2040             if (!codec->extradata) {
2041                 return AVERROR(ENOMEM);
2042             }
2043             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2044             codec->extradata_size= icodec->extradata_size;
2045             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2046
2047             codec->time_base = ist->st->time_base;
2048             /*
2049              * Avi is a special case here because it supports variable fps but
2050              * having the fps and timebase differe significantly adds quite some
2051              * overhead
2052              */
2053             if(!strcmp(oc->oformat->name, "avi")) {
2054                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2055                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2056                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2057                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2058                      || copy_tb==2){
2059                     codec->time_base.num = ist->st->r_frame_rate.den;
2060                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2061                     codec->ticks_per_frame = 2;
2062                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2063                                  && av_q2d(ist->st->time_base) < 1.0/500
2064                     || copy_tb==0){
2065                     codec->time_base = icodec->time_base;
2066                     codec->time_base.num *= icodec->ticks_per_frame;
2067                     codec->time_base.den *= 2;
2068                     codec->ticks_per_frame = 2;
2069                 }
2070             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2071                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2072                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2073                       && strcmp(oc->oformat->name, "f4v")
2074             ) {
2075                 if(   copy_tb<0 && icodec->time_base.den
2076                                 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2077                                 && av_q2d(ist->st->time_base) < 1.0/500
2078                    || copy_tb==0){
2079                     codec->time_base = icodec->time_base;
2080                     codec->time_base.num *= icodec->ticks_per_frame;
2081                 }
2082             }
2083
2084             if(ost->frame_rate.num)
2085                 codec->time_base = av_inv_q(ost->frame_rate);
2086
2087             av_reduce(&codec->time_base.num, &codec->time_base.den,
2088                         codec->time_base.num, codec->time_base.den, INT_MAX);
2089
2090             switch (codec->codec_type) {
2091             case AVMEDIA_TYPE_AUDIO:
2092                 if (audio_volume != 256) {
2093                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2094                     exit(1);
2095                 }
2096                 codec->channel_layout     = icodec->channel_layout;
2097                 codec->sample_rate        = icodec->sample_rate;
2098                 codec->channels           = icodec->channels;
2099                 codec->frame_size         = icodec->frame_size;
2100                 codec->audio_service_type = icodec->audio_service_type;
2101                 codec->block_align        = icodec->block_align;
2102                 if((codec->block_align == 1 || codec->block_align == 1152) && codec->codec_id == AV_CODEC_ID_MP3)
2103                     codec->block_align= 0;
2104                 if(codec->codec_id == AV_CODEC_ID_AC3)
2105                     codec->block_align= 0;
2106                 break;
2107             case AVMEDIA_TYPE_VIDEO:
2108                 codec->pix_fmt            = icodec->pix_fmt;
2109                 codec->width              = icodec->width;
2110                 codec->height             = icodec->height;
2111                 codec->has_b_frames       = icodec->has_b_frames;
2112                 if (!codec->sample_aspect_ratio.num) {
2113                     codec->sample_aspect_ratio   =
2114                     ost->st->sample_aspect_ratio =
2115                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2116                         ist->st->codec->sample_aspect_ratio.num ?
2117                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2118                 }
2119                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2120                 break;
2121             case AVMEDIA_TYPE_SUBTITLE:
2122                 codec->width  = icodec->width;
2123                 codec->height = icodec->height;
2124                 break;
2125             case AVMEDIA_TYPE_DATA:
2126             case AVMEDIA_TYPE_ATTACHMENT:
2127                 break;
2128             default:
2129                 abort();
2130             }
2131         } else {
2132             if (!ost->enc)
2133                 ost->enc = avcodec_find_encoder(codec->codec_id);
2134             if (!ost->enc) {
2135                 /* should only happen when a default codec is not present. */
2136                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2137                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2138                 ret = AVERROR(EINVAL);
2139                 goto dump_format;
2140             }
2141
2142             if (ist)
2143                 ist->decoding_needed++;
2144             ost->encoding_needed = 1;
2145
2146             if (!ost->filter &&
2147                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2148                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2149                     FilterGraph *fg;
2150                     fg = init_simple_filtergraph(ist, ost);
2151                     if (configure_filtergraph(fg)) {
2152                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2153                         exit(1);
2154                     }
2155             }
2156
2157             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2158                 if (ost->filter && !ost->frame_rate.num)
2159                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2160                 if (ist && !ost->frame_rate.num)
2161                     ost->frame_rate = ist->framerate;
2162                 if (ist && !ost->frame_rate.num)
2163                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2164 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2165                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2166                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2167                     ost->frame_rate = ost->enc->supported_framerates[idx];
2168                 }
2169             }
2170
2171             switch (codec->codec_type) {
2172             case AVMEDIA_TYPE_AUDIO:
2173                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2174                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2175                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2176                 codec->channels       = av_get_channel_layout_nb_channels(codec->channel_layout);
2177                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2178                 break;
2179             case AVMEDIA_TYPE_VIDEO:
2180                 codec->time_base = av_inv_q(ost->frame_rate);
2181                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2182                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2183                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2184                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2185                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2186                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2187                 }
2188                 for (j = 0; j < ost->forced_kf_count; j++)
2189                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2190                                                          AV_TIME_BASE_Q,
2191                                                          codec->time_base);
2192
2193                 codec->width  = ost->filter->filter->inputs[0]->w;
2194                 codec->height = ost->filter->filter->inputs[0]->h;
2195                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2196                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
2197                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
2198                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2199                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2200
2201                 if (!icodec ||
2202                     codec->width   != icodec->width  ||
2203                     codec->height  != icodec->height ||
2204                     codec->pix_fmt != icodec->pix_fmt) {
2205                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2206                 }
2207
2208                 if (ost->forced_keyframes)
2209                     parse_forced_key_frames(ost->forced_keyframes, ost,
2210                                             ost->st->codec);
2211                 break;
2212             case AVMEDIA_TYPE_SUBTITLE:
2213                 codec->time_base = (AVRational){1, 1000};
2214                 if (!codec->width) {
2215                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2216                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2217                 }
2218                 break;
2219             default:
2220                 abort();
2221                 break;
2222             }
2223             /* two pass mode */
2224             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2225                 char logfilename[1024];
2226                 FILE *f;
2227
2228                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2229                          ost->logfile_prefix ? ost->logfile_prefix :
2230                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2231                          i);
2232                 if (!strcmp(ost->enc->name, "libx264")) {
2233                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2234                 } else {
2235                     if (codec->flags & CODEC_FLAG_PASS2) {
2236                         char  *logbuffer;
2237                         size_t logbuffer_size;
2238                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2239                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2240                                    logfilename);
2241                             exit(1);
2242                         }
2243                         codec->stats_in = logbuffer;
2244                     }
2245                     if (codec->flags & CODEC_FLAG_PASS1) {
2246                         f = fopen(logfilename, "wb");
2247                         if (!f) {
2248                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2249                                 logfilename, strerror(errno));
2250                             exit(1);
2251                         }
2252                         ost->logfile = f;
2253                     }
2254                 }
2255             }
2256         }
2257     }
2258
2259     /* open each encoder */
2260     for (i = 0; i < nb_output_streams; i++) {
2261         ost = output_streams[i];
2262         if (ost->encoding_needed) {
2263             AVCodec      *codec = ost->enc;
2264             AVCodecContext *dec = NULL;
2265
2266             if ((ist = get_input_stream(ost)))
2267                 dec = ist->st->codec;
2268             if (dec && dec->subtitle_header) {
2269                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2270                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2271                 if (!ost->st->codec->subtitle_header) {
2272                     ret = AVERROR(ENOMEM);
2273                     goto dump_format;
2274                 }
2275                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2276                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2277             }
2278             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2279                 av_dict_set(&ost->opts, "threads", "auto", 0);
2280             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2281                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2282                         ost->file_index, ost->index);
2283                 ret = AVERROR(EINVAL);
2284                 goto dump_format;
2285             }
2286             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2287                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2288                 av_buffersink_set_frame_size(ost->filter->filter,
2289                                              ost->st->codec->frame_size);
2290             assert_codec_experimental(ost->st->codec, 1);
2291             assert_avoptions(ost->opts);
2292             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2293                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2294                                              " It takes bits/s as argument, not kbits/s\n");
2295             extra_size += ost->st->codec->extradata_size;
2296
2297             if (ost->st->codec->me_threshold)
2298                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
2299         }
2300     }
2301
2302     /* init input streams */
2303     for (i = 0; i < nb_input_streams; i++)
2304         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
2305             goto dump_format;
2306
2307     /* discard unused programs */
2308     for (i = 0; i < nb_input_files; i++) {
2309         InputFile *ifile = input_files[i];
2310         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2311             AVProgram *p = ifile->ctx->programs[j];
2312             int discard  = AVDISCARD_ALL;
2313
2314             for (k = 0; k < p->nb_stream_indexes; k++)
2315                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2316                     discard = AVDISCARD_DEFAULT;
2317                     break;
2318                 }
2319             p->discard = discard;
2320         }
2321     }
2322
2323     /* open files and write file headers */
2324     for (i = 0; i < nb_output_files; i++) {
2325         oc = output_files[i]->ctx;
2326         oc->interrupt_callback = int_cb;
2327         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2328             char errbuf[128];
2329             const char *errbuf_ptr = errbuf;
2330             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
2331                 errbuf_ptr = strerror(AVUNERROR(ret));
2332             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
2333             ret = AVERROR(EINVAL);
2334             goto dump_format;
2335         }
2336 //         assert_avoptions(output_files[i]->opts);
2337         if (strcmp(oc->oformat->name, "rtp")) {
2338             want_sdp = 0;
2339         }
2340     }
2341
2342  dump_format:
2343     /* dump the file output parameters - cannot be done before in case
2344        of stream copy */
2345     for (i = 0; i < nb_output_files; i++) {
2346         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2347     }
2348
2349     /* dump the stream mapping */
2350     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2351     for (i = 0; i < nb_input_streams; i++) {
2352         ist = input_streams[i];
2353
2354         for (j = 0; j < ist->nb_filters; j++) {
2355             if (ist->filters[j]->graph->graph_desc) {
2356                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2357                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2358                        ist->filters[j]->name);
2359                 if (nb_filtergraphs > 1)
2360                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2361                 av_log(NULL, AV_LOG_INFO, "\n");
2362             }
2363         }
2364     }
2365
2366     for (i = 0; i < nb_output_streams; i++) {
2367         ost = output_streams[i];
2368
2369         if (ost->attachment_filename) {
2370             /* an attached file */
2371             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2372                    ost->attachment_filename, ost->file_index, ost->index);
2373             continue;
2374         }
2375
2376         if (ost->filter && ost->filter->graph->graph_desc) {
2377             /* output from a complex graph */
2378             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2379             if (nb_filtergraphs > 1)
2380                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2381
2382             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2383                    ost->index, ost->enc ? ost->enc->name : "?");
2384             continue;
2385         }
2386
2387         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2388                input_streams[ost->source_index]->file_index,
2389                input_streams[ost->source_index]->st->index,
2390                ost->file_index,
2391                ost->index);
2392         if (ost->sync_ist != input_streams[ost->source_index])
2393             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2394                    ost->sync_ist->file_index,
2395                    ost->sync_ist->st->index);
2396         if (ost->stream_copy)
2397             av_log(NULL, AV_LOG_INFO, " (copy)");
2398         else
2399             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2400                    input_streams[ost->source_index]->dec->name : "?",
2401                    ost->enc ? ost->enc->name : "?");
2402         av_log(NULL, AV_LOG_INFO, "\n");
2403     }
2404
2405     if (ret) {
2406         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2407         return ret;
2408     }
2409
2410     if (want_sdp) {
2411         print_sdp();
2412     }
2413
2414     return 0;
2415 }
2416
2417 /**
2418  * @return 1 if there are still streams where more output is wanted,
2419  *         0 otherwise
2420  */
2421 static int need_output(void)
2422 {
2423     int i;
2424
2425     for (i = 0; i < nb_output_streams; i++) {
2426         OutputStream *ost    = output_streams[i];
2427         OutputFile *of       = output_files[ost->file_index];
2428         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2429
2430         if (ost->finished ||
2431             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2432             continue;
2433         if (ost->frame_number >= ost->max_frames) {
2434             int j;
2435             for (j = 0; j < of->ctx->nb_streams; j++)
2436                 close_output_stream(output_streams[of->ost_index + j]);
2437             continue;
2438         }
2439
2440         return 1;
2441     }
2442
2443     return 0;
2444 }
2445
2446 /**
2447  * Select the output stream to process.
2448  *
2449  * @return  selected output stream, or NULL if none available
2450  */
2451 static OutputStream *choose_output(void)
2452 {
2453     int i;
2454     int64_t opts_min = INT64_MAX;
2455     OutputStream *ost_min = NULL;
2456
2457     for (i = 0; i < nb_output_streams; i++) {
2458         OutputStream *ost = output_streams[i];
2459         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2460                                     AV_TIME_BASE_Q);
2461         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2462             opts_min = opts;
2463             ost_min  = ost;
2464         }
2465     }
2466     return ost_min;
2467 }
2468
2469 static int check_keyboard_interaction(int64_t cur_time)
2470 {
2471     int i, ret, key;
2472     static int64_t last_time;
2473     if (received_nb_signals)
2474         return AVERROR_EXIT;
2475     /* read_key() returns 0 on EOF */
2476     if(cur_time - last_time >= 100000 && !run_as_daemon){
2477         key =  read_key();
2478         last_time = cur_time;
2479     }else
2480         key = -1;
2481     if (key == 'q')
2482         return AVERROR_EXIT;
2483     if (key == '+') av_log_set_level(av_log_get_level()+10);
2484     if (key == '-') av_log_set_level(av_log_get_level()-10);
2485     if (key == 's') qp_hist     ^= 1;
2486     if (key == 'h'){
2487         if (do_hex_dump){
2488             do_hex_dump = do_pkt_dump = 0;
2489         } else if(do_pkt_dump){
2490             do_hex_dump = 1;
2491         } else
2492             do_pkt_dump = 1;
2493         av_log_set_level(AV_LOG_DEBUG);
2494     }
2495     if (key == 'c' || key == 'C'){
2496         char buf[4096], target[64], command[256], arg[256] = {0};
2497         double time;
2498         int k, n = 0;
2499         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2500         i = 0;
2501         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2502             if (k > 0)
2503                 buf[i++] = k;
2504         buf[i] = 0;
2505         if (k > 0 &&
2506             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2507             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2508                    target, time, command, arg);
2509             for (i = 0; i < nb_filtergraphs; i++) {
2510                 FilterGraph *fg = filtergraphs[i];
2511                 if (fg->graph) {
2512                     if (time < 0) {
2513                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2514                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2515                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2516                     } else {
2517                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2518                     }
2519                 }
2520             }
2521         } else {
2522             av_log(NULL, AV_LOG_ERROR,
2523                    "Parse error, at least 3 arguments were expected, "
2524                    "only %d given in string '%s'\n", n, buf);
2525         }
2526     }
2527     if (key == 'd' || key == 'D'){
2528         int debug=0;
2529         if(key == 'D') {
2530             debug = input_streams[0]->st->codec->debug<<1;
2531             if(!debug) debug = 1;
2532             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2533                 debug += debug;
2534         }else
2535             if(scanf("%d", &debug)!=1)
2536                 fprintf(stderr,"error parsing debug value\n");
2537         for(i=0;i<nb_input_streams;i++) {
2538             input_streams[i]->st->codec->debug = debug;
2539         }
2540         for(i=0;i<nb_output_streams;i++) {
2541             OutputStream *ost = output_streams[i];
2542             ost->st->codec->debug = debug;
2543         }
2544         if(debug) av_log_set_level(AV_LOG_DEBUG);
2545         fprintf(stderr,"debug=%d\n", debug);
2546     }
2547     if (key == '?'){
2548         fprintf(stderr, "key    function\n"
2549                         "?      show this help\n"
2550                         "+      increase verbosity\n"
2551                         "-      decrease verbosity\n"
2552                         "c      Send command to filtergraph\n"
2553                         "D      cycle through available debug modes\n"
2554                         "h      dump packets/hex press to cycle through the 3 states\n"
2555                         "q      quit\n"
2556                         "s      Show QP histogram\n"
2557         );
2558     }
2559     return 0;
2560 }
2561
2562 #if HAVE_PTHREADS
2563 static void *input_thread(void *arg)
2564 {
2565     InputFile *f = arg;
2566     int ret = 0;
2567
2568     while (!transcoding_finished && ret >= 0) {
2569         AVPacket pkt;
2570         ret = av_read_frame(f->ctx, &pkt);
2571
2572         if (ret == AVERROR(EAGAIN)) {
2573             av_usleep(10000);
2574             ret = 0;
2575             continue;
2576         } else if (ret < 0)
2577             break;
2578
2579         pthread_mutex_lock(&f->fifo_lock);
2580         while (!av_fifo_space(f->fifo))
2581             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2582
2583         av_dup_packet(&pkt);
2584         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2585
2586         pthread_mutex_unlock(&f->fifo_lock);
2587     }
2588
2589     f->finished = 1;
2590     return NULL;
2591 }
2592
2593 static void free_input_threads(void)
2594 {
2595     int i;
2596
2597     if (nb_input_files == 1)
2598         return;
2599
2600     transcoding_finished = 1;
2601
2602     for (i = 0; i < nb_input_files; i++) {
2603         InputFile *f = input_files[i];
2604         AVPacket pkt;
2605
2606         if (!f->fifo || f->joined)
2607             continue;
2608
2609         pthread_mutex_lock(&f->fifo_lock);
2610         while (av_fifo_size(f->fifo)) {
2611             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2612             av_free_packet(&pkt);
2613         }
2614         pthread_cond_signal(&f->fifo_cond);
2615         pthread_mutex_unlock(&f->fifo_lock);
2616
2617         pthread_join(f->thread, NULL);
2618         f->joined = 1;
2619
2620         while (av_fifo_size(f->fifo)) {
2621             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2622             av_free_packet(&pkt);
2623         }
2624         av_fifo_free(f->fifo);
2625     }
2626 }
2627
2628 static int init_input_threads(void)
2629 {
2630     int i, ret;
2631
2632     if (nb_input_files == 1)
2633         return 0;
2634
2635     for (i = 0; i < nb_input_files; i++) {
2636         InputFile *f = input_files[i];
2637
2638         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2639             return AVERROR(ENOMEM);
2640
2641         pthread_mutex_init(&f->fifo_lock, NULL);
2642         pthread_cond_init (&f->fifo_cond, NULL);
2643
2644         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2645             return AVERROR(ret);
2646     }
2647     return 0;
2648 }
2649
2650 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2651 {
2652     int ret = 0;
2653
2654     pthread_mutex_lock(&f->fifo_lock);
2655
2656     if (av_fifo_size(f->fifo)) {
2657         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2658         pthread_cond_signal(&f->fifo_cond);
2659     } else {
2660         if (f->finished)
2661             ret = AVERROR_EOF;
2662         else
2663             ret = AVERROR(EAGAIN);
2664     }
2665
2666     pthread_mutex_unlock(&f->fifo_lock);
2667
2668     return ret;
2669 }
2670 #endif
2671
2672 static int get_input_packet(InputFile *f, AVPacket *pkt)
2673 {
2674 #if HAVE_PTHREADS
2675     if (nb_input_files > 1)
2676         return get_input_packet_mt(f, pkt);
2677 #endif
2678     return av_read_frame(f->ctx, pkt);
2679 }
2680
2681 static int got_eagain(void)
2682 {
2683     int i;
2684     for (i = 0; i < nb_output_streams; i++)
2685         if (output_streams[i]->unavailable)
2686             return 1;
2687     return 0;
2688 }
2689
2690 static void reset_eagain(void)
2691 {
2692     int i;
2693     for (i = 0; i < nb_input_files; i++)
2694         input_files[i]->eagain = 0;
2695     for (i = 0; i < nb_output_streams; i++)
2696         output_streams[i]->unavailable = 0;
2697 }
2698
2699 /**
2700  * @return
2701  * - 0 -- one packet was read and processed
2702  * - AVERROR(EAGAIN) -- no packets were available for selected file,
2703  *   this function should be called again
2704  * - AVERROR_EOF -- this function should not be called again
2705  */
2706 static int process_input(int file_index)
2707 {
2708     InputFile *ifile = input_files[file_index];
2709     AVFormatContext *is;
2710     InputStream *ist;
2711     AVPacket pkt;
2712     int ret, i, j;
2713
2714     is  = ifile->ctx;
2715     ret = get_input_packet(ifile, &pkt);
2716
2717     if (ret == AVERROR(EAGAIN)) {
2718         ifile->eagain = 1;
2719         return ret;
2720     }
2721     if (ret < 0) {
2722         if (ret != AVERROR_EOF) {
2723             print_error(is->filename, ret);
2724             if (exit_on_error)
2725                 exit(1);
2726         }
2727         ifile->eof_reached = 1;
2728
2729         for (i = 0; i < ifile->nb_streams; i++) {
2730             ist = input_streams[ifile->ist_index + i];
2731             if (ist->decoding_needed)
2732                 output_packet(ist, NULL);
2733
2734             /* mark all outputs that don't go through lavfi as finished */
2735             for (j = 0; j < nb_output_streams; j++) {
2736                 OutputStream *ost = output_streams[j];
2737
2738                 if (ost->source_index == ifile->ist_index + i &&
2739                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2740                     close_output_stream(ost);
2741             }
2742         }
2743
2744         return AVERROR(EAGAIN);
2745     }
2746
2747     reset_eagain();
2748
2749     if (do_pkt_dump) {
2750         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2751                          is->streams[pkt.stream_index]);
2752     }
2753     /* the following test is needed in case new streams appear
2754        dynamically in stream : we ignore them */
2755     if (pkt.stream_index >= ifile->nb_streams) {
2756         report_new_stream(file_index, &pkt);
2757         goto discard_packet;
2758     }
2759
2760     ist = input_streams[ifile->ist_index + pkt.stream_index];
2761     if (ist->discard)
2762         goto discard_packet;
2763
2764     if(!ist->wrap_correction_done && input_files[file_index]->ctx->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
2765         int64_t stime = av_rescale_q(input_files[file_index]->ctx->start_time, AV_TIME_BASE_Q, ist->st->time_base);
2766         int64_t stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
2767         ist->wrap_correction_done = 1;
2768
2769         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2770             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
2771             ist->wrap_correction_done = 0;
2772         }
2773         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2774             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
2775             ist->wrap_correction_done = 0;
2776         }
2777     }
2778
2779     if (pkt.dts != AV_NOPTS_VALUE)
2780         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2781     if (pkt.pts != AV_NOPTS_VALUE)
2782         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2783
2784     if (pkt.pts != AV_NOPTS_VALUE)
2785         pkt.pts *= ist->ts_scale;
2786     if (pkt.dts != AV_NOPTS_VALUE)
2787         pkt.dts *= ist->ts_scale;
2788
2789     if (debug_ts) {
2790         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
2791                 "next_dts:%s next_dts_time:%s next_pts:%s next_pts_time:%s  pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%"PRId64"\n",
2792                 ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2793                 av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
2794                 av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
2795                 av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2796                 av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2797                 input_files[ist->file_index]->ts_offset);
2798     }
2799
2800     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2801         !copy_ts) {
2802         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2803         int64_t delta   = pkt_dts - ist->next_dts;
2804         if (is->iformat->flags & AVFMT_TS_DISCONT) {
2805         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2806             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2807                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2808             pkt_dts+1<ist->pts){
2809             ifile->ts_offset -= delta;
2810             av_log(NULL, AV_LOG_DEBUG,
2811                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2812                    delta, ifile->ts_offset);
2813             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2814             if (pkt.pts != AV_NOPTS_VALUE)
2815                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2816         }
2817         } else {
2818             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2819                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2820                ) {
2821                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
2822                 pkt.dts = AV_NOPTS_VALUE;
2823             }
2824             if (pkt.pts != AV_NOPTS_VALUE){
2825                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
2826                 delta   = pkt_pts - ist->next_dts;
2827                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2828                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2829                    ) {
2830                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
2831                     pkt.pts = AV_NOPTS_VALUE;
2832                 }
2833             }
2834         }
2835     }
2836
2837     sub2video_heartbeat(ist, pkt.pts);
2838
2839     ret = output_packet(ist, &pkt);
2840     if (ret < 0) {
2841         char buf[128];
2842         av_strerror(ret, buf, sizeof(buf));
2843         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
2844                 ist->file_index, ist->st->index, buf);
2845         if (exit_on_error)
2846             exit(1);
2847     }
2848
2849 discard_packet:
2850     av_free_packet(&pkt);
2851
2852     return 0;
2853 }
2854
2855 /**
2856  * Perform a step of transcoding for the specified filter graph.
2857  *
2858  * @param[in]  graph     filter graph to consider
2859  * @param[out] best_ist  input stream where a frame would allow to continue
2860  * @return  0 for success, <0 for error
2861  */
2862 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
2863 {
2864     int i, ret;
2865     int nb_requests, nb_requests_max = 0;
2866     InputFilter *ifilter;
2867     InputStream *ist;
2868
2869     *best_ist = NULL;
2870     ret = avfilter_graph_request_oldest(graph->graph);
2871     if (ret >= 0)
2872         return reap_filters();
2873
2874     if (ret == AVERROR_EOF) {
2875         ret = reap_filters();
2876         for (i = 0; i < graph->nb_outputs; i++)
2877             close_output_stream(graph->outputs[i]->ost);
2878         return ret;
2879     }
2880     if (ret != AVERROR(EAGAIN))
2881         return ret;
2882
2883     for (i = 0; i < graph->nb_inputs; i++) {
2884         ifilter = graph->inputs[i];
2885         ist = ifilter->ist;
2886         if (input_files[ist->file_index]->eagain ||
2887             input_files[ist->file_index]->eof_reached)
2888             continue;
2889         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
2890         if (nb_requests > nb_requests_max) {
2891             nb_requests_max = nb_requests;
2892             *best_ist = ist;
2893         }
2894     }
2895
2896     if (!*best_ist)
2897         for (i = 0; i < graph->nb_outputs; i++)
2898             graph->outputs[i]->ost->unavailable = 1;
2899
2900     return 0;
2901 }
2902
2903 /**
2904  * Run a single step of transcoding.
2905  *
2906  * @return  0 for success, <0 for error
2907  */
2908 static int transcode_step(void)
2909 {
2910     OutputStream *ost;
2911     InputStream  *ist;
2912     int ret;
2913
2914     ost = choose_output();
2915     if (!ost) {
2916         if (got_eagain()) {
2917             reset_eagain();
2918             av_usleep(10000);
2919             return 0;
2920         }
2921         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
2922         return AVERROR_EOF;
2923     }
2924
2925     if (ost->filter) {
2926         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
2927             return ret;
2928         if (!ist)
2929             return 0;
2930     } else {
2931         av_assert0(ost->source_index >= 0);
2932         ist = input_streams[ost->source_index];
2933     }
2934
2935     ret = process_input(ist->file_index);
2936     if (ret == AVERROR(EAGAIN)) {
2937         if (input_files[ist->file_index]->eagain)
2938             ost->unavailable = 1;
2939         return 0;
2940     }
2941     if (ret < 0)
2942         return ret == AVERROR_EOF ? 0 : ret;
2943
2944     return reap_filters();
2945 }
2946
2947 /*
2948  * The following code is the main loop of the file converter
2949  */
2950 static int transcode(void)
2951 {
2952     int ret, i;
2953     AVFormatContext *os;
2954     OutputStream *ost;
2955     InputStream *ist;
2956     int64_t timer_start;
2957
2958     ret = transcode_init();
2959     if (ret < 0)
2960         goto fail;
2961
2962     if (stdin_interaction) {
2963         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
2964     }
2965
2966     timer_start = av_gettime();
2967
2968 #if HAVE_PTHREADS
2969     if ((ret = init_input_threads()) < 0)
2970         goto fail;
2971 #endif
2972
2973     while (!received_sigterm) {
2974         int64_t cur_time= av_gettime();
2975
2976         /* if 'q' pressed, exits */
2977         if (stdin_interaction)
2978             if (check_keyboard_interaction(cur_time) < 0)
2979                 break;
2980
2981         /* check if there's any stream where output is still needed */
2982         if (!need_output()) {
2983             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
2984             break;
2985         }
2986
2987         ret = transcode_step();
2988         if (ret < 0) {
2989             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
2990                 continue;
2991
2992             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
2993             break;
2994         }
2995
2996         /* dump report by using the output first video and audio streams */
2997         print_report(0, timer_start, cur_time);
2998     }
2999 #if HAVE_PTHREADS
3000     free_input_threads();
3001 #endif
3002
3003     /* at the end of stream, we must flush the decoder buffers */
3004     for (i = 0; i < nb_input_streams; i++) {
3005         ist = input_streams[i];
3006         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3007             output_packet(ist, NULL);
3008         }
3009     }
3010     flush_encoders();
3011
3012     term_exit();
3013
3014     /* write the trailer if needed and close file */
3015     for (i = 0; i < nb_output_files; i++) {
3016         os = output_files[i]->ctx;
3017         av_write_trailer(os);
3018     }
3019
3020     /* dump report by using the first video and audio streams */
3021     print_report(1, timer_start, av_gettime());
3022
3023     /* close each encoder */
3024     for (i = 0; i < nb_output_streams; i++) {
3025         ost = output_streams[i];
3026         if (ost->encoding_needed) {
3027             av_freep(&ost->st->codec->stats_in);
3028             avcodec_close(ost->st->codec);
3029         }
3030     }
3031
3032     /* close each decoder */
3033     for (i = 0; i < nb_input_streams; i++) {
3034         ist = input_streams[i];
3035         if (ist->decoding_needed) {
3036             avcodec_close(ist->st->codec);
3037         }
3038     }
3039
3040     /* finished ! */
3041     ret = 0;
3042
3043  fail:
3044 #if HAVE_PTHREADS
3045     free_input_threads();
3046 #endif
3047
3048     if (output_streams) {
3049         for (i = 0; i < nb_output_streams; i++) {
3050             ost = output_streams[i];
3051             if (ost) {
3052                 if (ost->stream_copy)
3053                     av_freep(&ost->st->codec->extradata);
3054                 if (ost->logfile) {
3055                     fclose(ost->logfile);
3056                     ost->logfile = NULL;
3057                 }
3058                 av_freep(&ost->st->codec->subtitle_header);
3059                 av_free(ost->forced_kf_pts);
3060                 av_dict_free(&ost->opts);
3061             }
3062         }
3063     }
3064     return ret;
3065 }
3066
3067
3068 static int64_t getutime(void)
3069 {
3070 #if HAVE_GETRUSAGE
3071     struct rusage rusage;
3072
3073     getrusage(RUSAGE_SELF, &rusage);
3074     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3075 #elif HAVE_GETPROCESSTIMES
3076     HANDLE proc;
3077     FILETIME c, e, k, u;
3078     proc = GetCurrentProcess();
3079     GetProcessTimes(proc, &c, &e, &k, &u);
3080     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3081 #else
3082     return av_gettime();
3083 #endif
3084 }
3085
3086 static int64_t getmaxrss(void)
3087 {
3088 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3089     struct rusage rusage;
3090     getrusage(RUSAGE_SELF, &rusage);
3091     return (int64_t)rusage.ru_maxrss * 1024;
3092 #elif HAVE_GETPROCESSMEMORYINFO
3093     HANDLE proc;
3094     PROCESS_MEMORY_COUNTERS memcounters;
3095     proc = GetCurrentProcess();
3096     memcounters.cb = sizeof(memcounters);
3097     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3098     return memcounters.PeakPagefileUsage;
3099 #else
3100     return 0;
3101 #endif
3102 }
3103
3104 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3105 {
3106 }
3107
3108 static void parse_cpuflags(int argc, char **argv, const OptionDef *options)
3109 {
3110     int idx = locate_option(argc, argv, options, "cpuflags");
3111     if (idx && argv[idx + 1])
3112         opt_cpuflags(NULL, "cpuflags", argv[idx + 1]);
3113 }
3114
3115 int main(int argc, char **argv)
3116 {
3117     OptionsContext o = { 0 };
3118     int64_t ti;
3119
3120     atexit(exit_program);
3121
3122     reset_options(&o, 0);
3123
3124     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3125
3126     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3127     parse_loglevel(argc, argv, options);
3128
3129     if(argc>1 && !strcmp(argv[1], "-d")){
3130         run_as_daemon=1;
3131         av_log_set_callback(log_callback_null);
3132         argc--;
3133         argv++;
3134     }
3135
3136     avcodec_register_all();
3137 #if CONFIG_AVDEVICE
3138     avdevice_register_all();
3139 #endif
3140     avfilter_register_all();
3141     av_register_all();
3142     avformat_network_init();
3143
3144     show_banner(argc, argv, options);
3145
3146     term_init();
3147
3148     parse_cpuflags(argc, argv, options);
3149
3150     /* parse options */
3151     parse_options(&o, argc, argv, options, opt_output_file);
3152
3153     if (nb_output_files <= 0 && nb_input_files == 0) {
3154         show_usage();
3155         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3156         exit(1);
3157     }
3158
3159     /* file converter / grab */
3160     if (nb_output_files <= 0) {
3161         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3162         exit(1);
3163     }
3164
3165 //     if (nb_input_files == 0) {
3166 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3167 //         exit(1);
3168 //     }
3169
3170     current_time = ti = getutime();
3171     if (transcode() < 0)
3172         exit(1);
3173     ti = getutime() - ti;
3174     if (do_benchmark) {
3175         int maxrss = getmaxrss() / 1024;
3176         printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss);
3177     }
3178
3179     exit(0);
3180     return 0;
3181 }