aaccoder: add intensity stereo coding support for the trellis quantizer
[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 #include <stdint.h>
34
35 #if HAVE_ISATTY
36 #if HAVE_IO_H
37 #include <io.h>
38 #endif
39 #if HAVE_UNISTD_H
40 #include <unistd.h>
41 #endif
42 #endif
43
44 #include "libavformat/avformat.h"
45 #include "libavdevice/avdevice.h"
46 #include "libswresample/swresample.h"
47 #include "libavutil/opt.h"
48 #include "libavutil/channel_layout.h"
49 #include "libavutil/parseutils.h"
50 #include "libavutil/samplefmt.h"
51 #include "libavutil/fifo.h"
52 #include "libavutil/intreadwrite.h"
53 #include "libavutil/dict.h"
54 #include "libavutil/mathematics.h"
55 #include "libavutil/pixdesc.h"
56 #include "libavutil/avstring.h"
57 #include "libavutil/libm.h"
58 #include "libavutil/imgutils.h"
59 #include "libavutil/timestamp.h"
60 #include "libavutil/bprint.h"
61 #include "libavutil/time.h"
62 #include "libavutil/threadmessage.h"
63 #include "libavcodec/mathops.h"
64 #include "libavformat/os_support.h"
65
66 # include "libavfilter/avcodec.h"
67 # include "libavfilter/avfilter.h"
68 # include "libavfilter/buffersrc.h"
69 # include "libavfilter/buffersink.h"
70
71 #if HAVE_SYS_RESOURCE_H
72 #include <sys/time.h>
73 #include <sys/types.h>
74 #include <sys/resource.h>
75 #elif HAVE_GETPROCESSTIMES
76 #include <windows.h>
77 #endif
78 #if HAVE_GETPROCESSMEMORYINFO
79 #include <windows.h>
80 #include <psapi.h>
81 #endif
82
83 #if HAVE_SYS_SELECT_H
84 #include <sys/select.h>
85 #endif
86
87 #if HAVE_TERMIOS_H
88 #include <fcntl.h>
89 #include <sys/ioctl.h>
90 #include <sys/time.h>
91 #include <termios.h>
92 #elif HAVE_KBHIT
93 #include <conio.h>
94 #endif
95
96 #if HAVE_PTHREADS
97 #include <pthread.h>
98 #endif
99
100 #include <time.h>
101
102 #include "ffmpeg.h"
103 #include "cmdutils.h"
104
105 #include "libavutil/avassert.h"
106
107 const char program_name[] = "ffmpeg";
108 const int program_birth_year = 2000;
109
110 static FILE *vstats_file;
111
112 const char *const forced_keyframes_const_names[] = {
113     "n",
114     "n_forced",
115     "prev_forced_n",
116     "prev_forced_t",
117     "t",
118     NULL
119 };
120
121 static void do_video_stats(OutputStream *ost, int frame_size);
122 static int64_t getutime(void);
123 static int64_t getmaxrss(void);
124
125 static int run_as_daemon  = 0;
126 static int nb_frames_dup = 0;
127 static int nb_frames_drop = 0;
128 static int64_t decode_error_stat[2];
129
130 static int current_time;
131 AVIOContext *progress_avio = NULL;
132
133 static uint8_t *subtitle_out;
134
135 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
136
137 InputStream **input_streams = NULL;
138 int        nb_input_streams = 0;
139 InputFile   **input_files   = NULL;
140 int        nb_input_files   = 0;
141
142 OutputStream **output_streams = NULL;
143 int         nb_output_streams = 0;
144 OutputFile   **output_files   = NULL;
145 int         nb_output_files   = 0;
146
147 FilterGraph **filtergraphs;
148 int        nb_filtergraphs;
149
150 #if HAVE_TERMIOS_H
151
152 /* init terminal so that we can grab keys */
153 static struct termios oldtty;
154 static int restore_tty;
155 #endif
156
157 #if HAVE_PTHREADS
158 static void free_input_threads(void);
159 #endif
160
161 /* sub2video hack:
162    Convert subtitles to video with alpha to insert them in filter graphs.
163    This is a temporary solution until libavfilter gets real subtitles support.
164  */
165
166 static int sub2video_get_blank_frame(InputStream *ist)
167 {
168     int ret;
169     AVFrame *frame = ist->sub2video.frame;
170
171     av_frame_unref(frame);
172     ist->sub2video.frame->width  = ist->sub2video.w;
173     ist->sub2video.frame->height = ist->sub2video.h;
174     ist->sub2video.frame->format = AV_PIX_FMT_RGB32;
175     if ((ret = av_frame_get_buffer(frame, 32)) < 0)
176         return ret;
177     memset(frame->data[0], 0, frame->height * frame->linesize[0]);
178     return 0;
179 }
180
181 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
182                                 AVSubtitleRect *r)
183 {
184     uint32_t *pal, *dst2;
185     uint8_t *src, *src2;
186     int x, y;
187
188     if (r->type != SUBTITLE_BITMAP) {
189         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
190         return;
191     }
192     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
193         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
194         return;
195     }
196
197     dst += r->y * dst_linesize + r->x * 4;
198     src = r->pict.data[0];
199     pal = (uint32_t *)r->pict.data[1];
200     for (y = 0; y < r->h; y++) {
201         dst2 = (uint32_t *)dst;
202         src2 = src;
203         for (x = 0; x < r->w; x++)
204             *(dst2++) = pal[*(src2++)];
205         dst += dst_linesize;
206         src += r->pict.linesize[0];
207     }
208 }
209
210 static void sub2video_push_ref(InputStream *ist, int64_t pts)
211 {
212     AVFrame *frame = ist->sub2video.frame;
213     int i;
214
215     av_assert1(frame->data[0]);
216     ist->sub2video.last_pts = frame->pts = pts;
217     for (i = 0; i < ist->nb_filters; i++)
218         av_buffersrc_add_frame_flags(ist->filters[i]->filter, frame,
219                                      AV_BUFFERSRC_FLAG_KEEP_REF |
220                                      AV_BUFFERSRC_FLAG_PUSH);
221 }
222
223 static void sub2video_update(InputStream *ist, AVSubtitle *sub)
224 {
225     int w = ist->sub2video.w, h = ist->sub2video.h;
226     AVFrame *frame = ist->sub2video.frame;
227     int8_t *dst;
228     int     dst_linesize;
229     int num_rects, i;
230     int64_t pts, end_pts;
231
232     if (!frame)
233         return;
234     if (sub) {
235         pts       = av_rescale_q(sub->pts + sub->start_display_time * 1000LL,
236                                  AV_TIME_BASE_Q, ist->st->time_base);
237         end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000LL,
238                                  AV_TIME_BASE_Q, ist->st->time_base);
239         num_rects = sub->num_rects;
240     } else {
241         pts       = ist->sub2video.end_pts;
242         end_pts   = INT64_MAX;
243         num_rects = 0;
244     }
245     if (sub2video_get_blank_frame(ist) < 0) {
246         av_log(ist->dec_ctx, AV_LOG_ERROR,
247                "Impossible to get a blank canvas.\n");
248         return;
249     }
250     dst          = frame->data    [0];
251     dst_linesize = frame->linesize[0];
252     for (i = 0; i < num_rects; i++)
253         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
254     sub2video_push_ref(ist, pts);
255     ist->sub2video.end_pts = end_pts;
256 }
257
258 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
259 {
260     InputFile *infile = input_files[ist->file_index];
261     int i, j, nb_reqs;
262     int64_t pts2;
263
264     /* When a frame is read from a file, examine all sub2video streams in
265        the same file and send the sub2video frame again. Otherwise, decoded
266        video frames could be accumulating in the filter graph while a filter
267        (possibly overlay) is desperately waiting for a subtitle frame. */
268     for (i = 0; i < infile->nb_streams; i++) {
269         InputStream *ist2 = input_streams[infile->ist_index + i];
270         if (!ist2->sub2video.frame)
271             continue;
272         /* subtitles seem to be usually muxed ahead of other streams;
273            if not, subtracting a larger time here is necessary */
274         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
275         /* do not send the heartbeat frame if the subtitle is already ahead */
276         if (pts2 <= ist2->sub2video.last_pts)
277             continue;
278         if (pts2 >= ist2->sub2video.end_pts || !ist2->sub2video.frame->data[0])
279             sub2video_update(ist2, NULL);
280         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
281             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
282         if (nb_reqs)
283             sub2video_push_ref(ist2, pts2);
284     }
285 }
286
287 static void sub2video_flush(InputStream *ist)
288 {
289     int i;
290
291     if (ist->sub2video.end_pts < INT64_MAX)
292         sub2video_update(ist, NULL);
293     for (i = 0; i < ist->nb_filters; i++)
294         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
295 }
296
297 /* end of sub2video hack */
298
299 static void term_exit_sigsafe(void)
300 {
301 #if HAVE_TERMIOS_H
302     if(restore_tty)
303         tcsetattr (0, TCSANOW, &oldtty);
304 #endif
305 }
306
307 void term_exit(void)
308 {
309     av_log(NULL, AV_LOG_QUIET, "%s", "");
310     term_exit_sigsafe();
311 }
312
313 static volatile int received_sigterm = 0;
314 static volatile int received_nb_signals = 0;
315 static volatile int transcode_init_done = 0;
316 static int main_return_code = 0;
317
318 static void
319 sigterm_handler(int sig)
320 {
321     received_sigterm = sig;
322     received_nb_signals++;
323     term_exit_sigsafe();
324     if(received_nb_signals > 3) {
325         write(2/*STDERR_FILENO*/, "Received > 3 system signals, hard exiting\n",
326                            strlen("Received > 3 system signals, hard exiting\n"));
327
328         exit(123);
329     }
330 }
331
332 void term_init(void)
333 {
334 #if HAVE_TERMIOS_H
335     if(!run_as_daemon){
336         struct termios tty;
337         int istty = 1;
338 #if HAVE_ISATTY
339         istty = isatty(0) && isatty(2);
340 #endif
341         if (istty && tcgetattr (0, &tty) == 0) {
342             oldtty = tty;
343             restore_tty = 1;
344
345             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
346                              |INLCR|IGNCR|ICRNL|IXON);
347             tty.c_oflag |= OPOST;
348             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
349             tty.c_cflag &= ~(CSIZE|PARENB);
350             tty.c_cflag |= CS8;
351             tty.c_cc[VMIN] = 1;
352             tty.c_cc[VTIME] = 0;
353
354             tcsetattr (0, TCSANOW, &tty);
355         }
356         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
357     }
358 #endif
359
360     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
361     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
362 #ifdef SIGXCPU
363     signal(SIGXCPU, sigterm_handler);
364 #endif
365 }
366
367 /* read a key without blocking */
368 static int read_key(void)
369 {
370     unsigned char ch;
371 #if HAVE_TERMIOS_H
372     int n = 1;
373     struct timeval tv;
374     fd_set rfds;
375
376     FD_ZERO(&rfds);
377     FD_SET(0, &rfds);
378     tv.tv_sec = 0;
379     tv.tv_usec = 0;
380     n = select(1, &rfds, NULL, NULL, &tv);
381     if (n > 0) {
382         n = read(0, &ch, 1);
383         if (n == 1)
384             return ch;
385
386         return n;
387     }
388 #elif HAVE_KBHIT
389 #    if HAVE_PEEKNAMEDPIPE
390     static int is_pipe;
391     static HANDLE input_handle;
392     DWORD dw, nchars;
393     if(!input_handle){
394         input_handle = GetStdHandle(STD_INPUT_HANDLE);
395         is_pipe = !GetConsoleMode(input_handle, &dw);
396     }
397
398     if (stdin->_cnt > 0) {
399         read(0, &ch, 1);
400         return ch;
401     }
402     if (is_pipe) {
403         /* When running under a GUI, you will end here. */
404         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
405             // input pipe may have been closed by the program that ran ffmpeg
406             return -1;
407         }
408         //Read it
409         if(nchars != 0) {
410             read(0, &ch, 1);
411             return ch;
412         }else{
413             return -1;
414         }
415     }
416 #    endif
417     if(kbhit())
418         return(getch());
419 #endif
420     return -1;
421 }
422
423 static int decode_interrupt_cb(void *ctx)
424 {
425     return received_nb_signals > transcode_init_done;
426 }
427
428 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
429
430 static void ffmpeg_cleanup(int ret)
431 {
432     int i, j;
433
434     if (do_benchmark) {
435         int maxrss = getmaxrss() / 1024;
436         printf("bench: maxrss=%ikB\n", maxrss);
437     }
438
439     for (i = 0; i < nb_filtergraphs; i++) {
440         FilterGraph *fg = filtergraphs[i];
441         avfilter_graph_free(&fg->graph);
442         for (j = 0; j < fg->nb_inputs; j++) {
443             av_freep(&fg->inputs[j]->name);
444             av_freep(&fg->inputs[j]);
445         }
446         av_freep(&fg->inputs);
447         for (j = 0; j < fg->nb_outputs; j++) {
448             av_freep(&fg->outputs[j]->name);
449             av_freep(&fg->outputs[j]);
450         }
451         av_freep(&fg->outputs);
452         av_freep(&fg->graph_desc);
453
454         av_freep(&filtergraphs[i]);
455     }
456     av_freep(&filtergraphs);
457
458     av_freep(&subtitle_out);
459
460     /* close files */
461     for (i = 0; i < nb_output_files; i++) {
462         OutputFile *of = output_files[i];
463         AVFormatContext *s = of->ctx;
464         if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE))
465             avio_closep(&s->pb);
466         avformat_free_context(s);
467         av_dict_free(&of->opts);
468
469         av_freep(&output_files[i]);
470     }
471     for (i = 0; i < nb_output_streams; i++) {
472         OutputStream *ost = output_streams[i];
473         AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
474         while (bsfc) {
475             AVBitStreamFilterContext *next = bsfc->next;
476             av_bitstream_filter_close(bsfc);
477             bsfc = next;
478         }
479         ost->bitstream_filters = NULL;
480         av_frame_free(&ost->filtered_frame);
481         av_frame_free(&ost->last_frame);
482
483         av_parser_close(ost->parser);
484
485         av_freep(&ost->forced_keyframes);
486         av_expr_free(ost->forced_keyframes_pexpr);
487         av_freep(&ost->avfilter);
488         av_freep(&ost->logfile_prefix);
489
490         av_freep(&ost->audio_channels_map);
491         ost->audio_channels_mapped = 0;
492
493         avcodec_free_context(&ost->enc_ctx);
494
495         av_freep(&output_streams[i]);
496     }
497 #if HAVE_PTHREADS
498     free_input_threads();
499 #endif
500     for (i = 0; i < nb_input_files; i++) {
501         avformat_close_input(&input_files[i]->ctx);
502         av_freep(&input_files[i]);
503     }
504     for (i = 0; i < nb_input_streams; i++) {
505         InputStream *ist = input_streams[i];
506
507         av_frame_free(&ist->decoded_frame);
508         av_frame_free(&ist->filter_frame);
509         av_dict_free(&ist->decoder_opts);
510         avsubtitle_free(&ist->prev_sub.subtitle);
511         av_frame_free(&ist->sub2video.frame);
512         av_freep(&ist->filters);
513         av_freep(&ist->hwaccel_device);
514
515         avcodec_free_context(&ist->dec_ctx);
516
517         av_freep(&input_streams[i]);
518     }
519
520     if (vstats_file)
521         fclose(vstats_file);
522     av_freep(&vstats_filename);
523
524     av_freep(&input_streams);
525     av_freep(&input_files);
526     av_freep(&output_streams);
527     av_freep(&output_files);
528
529     uninit_opts();
530
531     avformat_network_deinit();
532
533     if (received_sigterm) {
534         av_log(NULL, AV_LOG_INFO, "Exiting normally, received signal %d.\n",
535                (int) received_sigterm);
536     } else if (ret && transcode_init_done) {
537         av_log(NULL, AV_LOG_INFO, "Conversion failed!\n");
538     }
539     term_exit();
540 }
541
542 void remove_avoptions(AVDictionary **a, AVDictionary *b)
543 {
544     AVDictionaryEntry *t = NULL;
545
546     while ((t = av_dict_get(b, "", t, AV_DICT_IGNORE_SUFFIX))) {
547         av_dict_set(a, t->key, NULL, AV_DICT_MATCH_CASE);
548     }
549 }
550
551 void assert_avoptions(AVDictionary *m)
552 {
553     AVDictionaryEntry *t;
554     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
555         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
556         exit_program(1);
557     }
558 }
559
560 static void abort_codec_experimental(AVCodec *c, int encoder)
561 {
562     exit_program(1);
563 }
564
565 static void update_benchmark(const char *fmt, ...)
566 {
567     if (do_benchmark_all) {
568         int64_t t = getutime();
569         va_list va;
570         char buf[1024];
571
572         if (fmt) {
573             va_start(va, fmt);
574             vsnprintf(buf, sizeof(buf), fmt, va);
575             va_end(va);
576             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
577         }
578         current_time = t;
579     }
580 }
581
582 static void close_all_output_streams(OutputStream *ost, OSTFinished this_stream, OSTFinished others)
583 {
584     int i;
585     for (i = 0; i < nb_output_streams; i++) {
586         OutputStream *ost2 = output_streams[i];
587         ost2->finished |= ost == ost2 ? this_stream : others;
588     }
589 }
590
591 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
592 {
593     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
594     AVCodecContext          *avctx = ost->encoding_needed ? ost->enc_ctx : ost->st->codec;
595     int ret;
596
597     if (!ost->st->codec->extradata_size && ost->enc_ctx->extradata_size) {
598         ost->st->codec->extradata = av_mallocz(ost->enc_ctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE);
599         if (ost->st->codec->extradata) {
600             memcpy(ost->st->codec->extradata, ost->enc_ctx->extradata, ost->enc_ctx->extradata_size);
601             ost->st->codec->extradata_size = ost->enc_ctx->extradata_size;
602         }
603     }
604
605     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
606         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
607         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
608
609     /*
610      * Audio encoders may split the packets --  #frames in != #packets out.
611      * But there is no reordering, so we can limit the number of output packets
612      * by simply dropping them here.
613      * Counting encoded video frames needs to be done separately because of
614      * reordering, see do_video_out()
615      */
616     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
617         if (ost->frame_number >= ost->max_frames) {
618             av_free_packet(pkt);
619             return;
620         }
621         ost->frame_number++;
622     }
623
624     if (bsfc)
625         av_packet_split_side_data(pkt);
626
627     while (bsfc) {
628         AVPacket new_pkt = *pkt;
629         AVDictionaryEntry *bsf_arg = av_dict_get(ost->bsf_args,
630                                                  bsfc->filter->name,
631                                                  NULL, 0);
632         int a = av_bitstream_filter_filter(bsfc, avctx,
633                                            bsf_arg ? bsf_arg->value : NULL,
634                                            &new_pkt.data, &new_pkt.size,
635                                            pkt->data, pkt->size,
636                                            pkt->flags & AV_PKT_FLAG_KEY);
637         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
638             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
639             if(t) {
640                 memcpy(t, new_pkt.data, new_pkt.size);
641                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
642                 new_pkt.data = t;
643                 new_pkt.buf = NULL;
644                 a = 1;
645             } else
646                 a = AVERROR(ENOMEM);
647         }
648         if (a > 0) {
649             pkt->side_data = NULL;
650             pkt->side_data_elems = 0;
651             av_free_packet(pkt);
652             new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
653                                            av_buffer_default_free, NULL, 0);
654             if (!new_pkt.buf)
655                 exit_program(1);
656         } else if (a < 0) {
657             new_pkt = *pkt;
658             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
659                    bsfc->filter->name, pkt->stream_index,
660                    avctx->codec ? avctx->codec->name : "copy");
661             print_error("", a);
662             if (exit_on_error)
663                 exit_program(1);
664         }
665         *pkt = new_pkt;
666
667         bsfc = bsfc->next;
668     }
669
670     if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS)) {
671         if (pkt->dts != AV_NOPTS_VALUE &&
672             pkt->pts != AV_NOPTS_VALUE &&
673             pkt->dts > pkt->pts) {
674             av_log(s, AV_LOG_WARNING, "Invalid DTS: %"PRId64" PTS: %"PRId64" in output stream %d:%d, replacing by guess\n",
675                    pkt->dts, pkt->pts,
676                    ost->file_index, ost->st->index);
677             pkt->pts =
678             pkt->dts = pkt->pts + pkt->dts + ost->last_mux_dts + 1
679                      - FFMIN3(pkt->pts, pkt->dts, ost->last_mux_dts + 1)
680                      - FFMAX3(pkt->pts, pkt->dts, ost->last_mux_dts + 1);
681         }
682      if(
683         (avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) &&
684         pkt->dts != AV_NOPTS_VALUE &&
685         ost->last_mux_dts != AV_NOPTS_VALUE) {
686       int64_t max = ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
687       if (pkt->dts < max) {
688         int loglevel = max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG;
689         av_log(s, loglevel, "Non-monotonous DTS in output stream "
690                "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
691                ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
692         if (exit_on_error) {
693             av_log(NULL, AV_LOG_FATAL, "aborting.\n");
694             exit_program(1);
695         }
696         av_log(s, loglevel, "changing to %"PRId64". This may result "
697                "in incorrect timestamps in the output file.\n",
698                max);
699         if(pkt->pts >= pkt->dts)
700             pkt->pts = FFMAX(pkt->pts, max);
701         pkt->dts = max;
702       }
703      }
704     }
705     ost->last_mux_dts = pkt->dts;
706
707     ost->data_size += pkt->size;
708     ost->packets_written++;
709
710     pkt->stream_index = ost->index;
711
712     if (debug_ts) {
713         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
714                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
715                 av_get_media_type_string(ost->enc_ctx->codec_type),
716                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
717                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
718                 pkt->size
719               );
720     }
721
722     ret = av_interleaved_write_frame(s, pkt);
723     if (ret < 0) {
724         print_error("av_interleaved_write_frame()", ret);
725         main_return_code = 1;
726         close_all_output_streams(ost, MUXER_FINISHED | ENCODER_FINISHED, ENCODER_FINISHED);
727     }
728     av_free_packet(pkt);
729 }
730
731 static void close_output_stream(OutputStream *ost)
732 {
733     OutputFile *of = output_files[ost->file_index];
734
735     ost->finished |= ENCODER_FINISHED;
736     if (of->shortest) {
737         int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->enc_ctx->time_base, AV_TIME_BASE_Q);
738         of->recording_time = FFMIN(of->recording_time, end);
739     }
740 }
741
742 static int check_recording_time(OutputStream *ost)
743 {
744     OutputFile *of = output_files[ost->file_index];
745
746     if (of->recording_time != INT64_MAX &&
747         av_compare_ts(ost->sync_opts - ost->first_pts, ost->enc_ctx->time_base, of->recording_time,
748                       AV_TIME_BASE_Q) >= 0) {
749         close_output_stream(ost);
750         return 0;
751     }
752     return 1;
753 }
754
755 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
756                          AVFrame *frame)
757 {
758     AVCodecContext *enc = ost->enc_ctx;
759     AVPacket pkt;
760     int got_packet = 0;
761
762     av_init_packet(&pkt);
763     pkt.data = NULL;
764     pkt.size = 0;
765
766     if (!check_recording_time(ost))
767         return;
768
769     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
770         frame->pts = ost->sync_opts;
771     ost->sync_opts = frame->pts + frame->nb_samples;
772     ost->samples_encoded += frame->nb_samples;
773     ost->frames_encoded++;
774
775     av_assert0(pkt.size || !pkt.data);
776     update_benchmark(NULL);
777     if (debug_ts) {
778         av_log(NULL, AV_LOG_INFO, "encoder <- type:audio "
779                "frame_pts:%s frame_pts_time:%s time_base:%d/%d\n",
780                av_ts2str(frame->pts), av_ts2timestr(frame->pts, &enc->time_base),
781                enc->time_base.num, enc->time_base.den);
782     }
783
784     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
785         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
786         exit_program(1);
787     }
788     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
789
790     if (got_packet) {
791         av_packet_rescale_ts(&pkt, enc->time_base, ost->st->time_base);
792
793         if (debug_ts) {
794             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
795                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
796                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
797                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
798         }
799
800         write_frame(s, &pkt, ost);
801     }
802 }
803
804 static void do_subtitle_out(AVFormatContext *s,
805                             OutputStream *ost,
806                             InputStream *ist,
807                             AVSubtitle *sub)
808 {
809     int subtitle_out_max_size = 1024 * 1024;
810     int subtitle_out_size, nb, i;
811     AVCodecContext *enc;
812     AVPacket pkt;
813     int64_t pts;
814
815     if (sub->pts == AV_NOPTS_VALUE) {
816         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
817         if (exit_on_error)
818             exit_program(1);
819         return;
820     }
821
822     enc = ost->enc_ctx;
823
824     if (!subtitle_out) {
825         subtitle_out = av_malloc(subtitle_out_max_size);
826         if (!subtitle_out) {
827             av_log(NULL, AV_LOG_FATAL, "Failed to allocate subtitle_out\n");
828             exit_program(1);
829         }
830     }
831
832     /* Note: DVB subtitle need one packet to draw them and one other
833        packet to clear them */
834     /* XXX: signal it in the codec context ? */
835     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
836         nb = 2;
837     else
838         nb = 1;
839
840     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
841     pts = sub->pts;
842     if (output_files[ost->file_index]->start_time != AV_NOPTS_VALUE)
843         pts -= output_files[ost->file_index]->start_time;
844     for (i = 0; i < nb; i++) {
845         unsigned save_num_rects = sub->num_rects;
846
847         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
848         if (!check_recording_time(ost))
849             return;
850
851         sub->pts = pts;
852         // start_display_time is required to be 0
853         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
854         sub->end_display_time  -= sub->start_display_time;
855         sub->start_display_time = 0;
856         if (i == 1)
857             sub->num_rects = 0;
858
859         ost->frames_encoded++;
860
861         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
862                                                     subtitle_out_max_size, sub);
863         if (i == 1)
864             sub->num_rects = save_num_rects;
865         if (subtitle_out_size < 0) {
866             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
867             exit_program(1);
868         }
869
870         av_init_packet(&pkt);
871         pkt.data = subtitle_out;
872         pkt.size = subtitle_out_size;
873         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
874         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
875         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
876             /* XXX: the pts correction is handled here. Maybe handling
877                it in the codec would be better */
878             if (i == 0)
879                 pkt.pts += 90 * sub->start_display_time;
880             else
881                 pkt.pts += 90 * sub->end_display_time;
882         }
883         pkt.dts = pkt.pts;
884         write_frame(s, &pkt, ost);
885     }
886 }
887
888 static void do_video_out(AVFormatContext *s,
889                          OutputStream *ost,
890                          AVFrame *next_picture,
891                          double sync_ipts)
892 {
893     int ret, format_video_sync;
894     AVPacket pkt;
895     AVCodecContext *enc = ost->enc_ctx;
896     AVCodecContext *mux_enc = ost->st->codec;
897     int nb_frames, nb0_frames, i;
898     double delta, delta0;
899     double duration = 0;
900     int frame_size = 0;
901     InputStream *ist = NULL;
902     AVFilterContext *filter = ost->filter->filter;
903
904     if (ost->source_index >= 0)
905         ist = input_streams[ost->source_index];
906
907     if (filter->inputs[0]->frame_rate.num > 0 &&
908         filter->inputs[0]->frame_rate.den > 0)
909         duration = 1/(av_q2d(filter->inputs[0]->frame_rate) * av_q2d(enc->time_base));
910
911     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
912         duration = FFMIN(duration, 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base)));
913
914     if (!ost->filters_script &&
915         !ost->filters &&
916         next_picture &&
917         ist &&
918         lrintf(av_frame_get_pkt_duration(next_picture) * av_q2d(ist->st->time_base) / av_q2d(enc->time_base)) > 0) {
919         duration = lrintf(av_frame_get_pkt_duration(next_picture) * av_q2d(ist->st->time_base) / av_q2d(enc->time_base));
920     }
921
922     if (!next_picture) {
923         //end, flushing
924         nb0_frames = nb_frames = mid_pred(ost->last_nb0_frames[0],
925                                           ost->last_nb0_frames[1],
926                                           ost->last_nb0_frames[2]);
927     } else {
928         delta0 = sync_ipts - ost->sync_opts;
929         delta  = delta0 + duration;
930
931         /* by default, we output a single frame */
932         nb0_frames = 0;
933         nb_frames = 1;
934
935         format_video_sync = video_sync_method;
936         if (format_video_sync == VSYNC_AUTO) {
937             if(!strcmp(s->oformat->name, "avi")) {
938                 format_video_sync = VSYNC_VFR;
939             } else
940                 format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
941             if (   ist
942                 && format_video_sync == VSYNC_CFR
943                 && input_files[ist->file_index]->ctx->nb_streams == 1
944                 && input_files[ist->file_index]->input_ts_offset == 0) {
945                 format_video_sync = VSYNC_VSCFR;
946             }
947             if (format_video_sync == VSYNC_CFR && copy_ts) {
948                 format_video_sync = VSYNC_VSCFR;
949             }
950         }
951
952         if (delta0 < 0 &&
953             delta > 0 &&
954             format_video_sync != VSYNC_PASSTHROUGH &&
955             format_video_sync != VSYNC_DROP) {
956             double cor = FFMIN(-delta0, duration);
957             if (delta0 < -0.6) {
958                 av_log(NULL, AV_LOG_WARNING, "Past duration %f too large\n", -delta0);
959             } else
960                 av_log(NULL, AV_LOG_DEBUG, "Cliping frame in rate conversion by %f\n", -delta0);
961             sync_ipts += cor;
962             duration -= cor;
963             delta0 += cor;
964         }
965
966         switch (format_video_sync) {
967         case VSYNC_VSCFR:
968             if (ost->frame_number == 0 && delta - duration >= 0.5) {
969                 av_log(NULL, AV_LOG_DEBUG, "Not duplicating %d initial frames\n", (int)lrintf(delta - duration));
970                 delta = duration;
971                 delta0 = 0;
972                 ost->sync_opts = lrint(sync_ipts);
973             }
974         case VSYNC_CFR:
975             // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
976             if (frame_drop_threshold && delta < frame_drop_threshold && ost->frame_number) {
977                 nb_frames = 0;
978             } else if (delta < -1.1)
979                 nb_frames = 0;
980             else if (delta > 1.1) {
981                 nb_frames = lrintf(delta);
982                 if (delta0 > 1.1)
983                     nb0_frames = lrintf(delta0 - 0.6);
984             }
985             break;
986         case VSYNC_VFR:
987             if (delta <= -0.6)
988                 nb_frames = 0;
989             else if (delta > 0.6)
990                 ost->sync_opts = lrint(sync_ipts);
991             break;
992         case VSYNC_DROP:
993         case VSYNC_PASSTHROUGH:
994             ost->sync_opts = lrint(sync_ipts);
995             break;
996         default:
997             av_assert0(0);
998         }
999     }
1000
1001     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
1002     nb0_frames = FFMIN(nb0_frames, nb_frames);
1003
1004     memmove(ost->last_nb0_frames + 1,
1005             ost->last_nb0_frames,
1006             sizeof(ost->last_nb0_frames[0]) * (FF_ARRAY_ELEMS(ost->last_nb0_frames) - 1));
1007     ost->last_nb0_frames[0] = nb0_frames;
1008
1009     if (nb0_frames == 0 && ost->last_droped) {
1010         nb_frames_drop++;
1011         av_log(NULL, AV_LOG_VERBOSE,
1012                "*** dropping frame %d from stream %d at ts %"PRId64"\n",
1013                ost->frame_number, ost->st->index, ost->last_frame->pts);
1014     }
1015     if (nb_frames > (nb0_frames && ost->last_droped) + (nb_frames > nb0_frames)) {
1016         if (nb_frames > dts_error_threshold * 30) {
1017             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
1018             nb_frames_drop++;
1019             return;
1020         }
1021         nb_frames_dup += nb_frames - (nb0_frames && ost->last_droped) - (nb_frames > nb0_frames);
1022         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
1023     }
1024     ost->last_droped = nb_frames == nb0_frames && next_picture;
1025
1026   /* duplicates frame if needed */
1027   for (i = 0; i < nb_frames; i++) {
1028     AVFrame *in_picture;
1029     av_init_packet(&pkt);
1030     pkt.data = NULL;
1031     pkt.size = 0;
1032
1033     if (i < nb0_frames && ost->last_frame) {
1034         in_picture = ost->last_frame;
1035     } else
1036         in_picture = next_picture;
1037
1038     if (!in_picture)
1039         return;
1040
1041     in_picture->pts = ost->sync_opts;
1042
1043 #if 1
1044     if (!check_recording_time(ost))
1045 #else
1046     if (ost->frame_number >= ost->max_frames)
1047 #endif
1048         return;
1049
1050     if (s->oformat->flags & AVFMT_RAWPICTURE &&
1051         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
1052         /* raw pictures are written as AVPicture structure to
1053            avoid any copies. We support temporarily the older
1054            method. */
1055         if (in_picture->interlaced_frame)
1056             mux_enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
1057         else
1058             mux_enc->field_order = AV_FIELD_PROGRESSIVE;
1059         pkt.data   = (uint8_t *)in_picture;
1060         pkt.size   =  sizeof(AVPicture);
1061         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
1062         pkt.flags |= AV_PKT_FLAG_KEY;
1063
1064         write_frame(s, &pkt, ost);
1065     } else {
1066         int got_packet, forced_keyframe = 0;
1067         double pts_time;
1068
1069         if (enc->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME) &&
1070             ost->top_field_first >= 0)
1071             in_picture->top_field_first = !!ost->top_field_first;
1072
1073         if (in_picture->interlaced_frame) {
1074             if (enc->codec->id == AV_CODEC_ID_MJPEG)
1075                 mux_enc->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
1076             else
1077                 mux_enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
1078         } else
1079             mux_enc->field_order = AV_FIELD_PROGRESSIVE;
1080
1081         in_picture->quality = enc->global_quality;
1082         in_picture->pict_type = 0;
1083
1084         pts_time = in_picture->pts != AV_NOPTS_VALUE ?
1085             in_picture->pts * av_q2d(enc->time_base) : NAN;
1086         if (ost->forced_kf_index < ost->forced_kf_count &&
1087             in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
1088             ost->forced_kf_index++;
1089             forced_keyframe = 1;
1090         } else if (ost->forced_keyframes_pexpr) {
1091             double res;
1092             ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
1093             res = av_expr_eval(ost->forced_keyframes_pexpr,
1094                                ost->forced_keyframes_expr_const_values, NULL);
1095             av_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
1096                     ost->forced_keyframes_expr_const_values[FKF_N],
1097                     ost->forced_keyframes_expr_const_values[FKF_N_FORCED],
1098                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N],
1099                     ost->forced_keyframes_expr_const_values[FKF_T],
1100                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T],
1101                     res);
1102             if (res) {
1103                 forced_keyframe = 1;
1104                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] =
1105                     ost->forced_keyframes_expr_const_values[FKF_N];
1106                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] =
1107                     ost->forced_keyframes_expr_const_values[FKF_T];
1108                 ost->forced_keyframes_expr_const_values[FKF_N_FORCED] += 1;
1109             }
1110
1111             ost->forced_keyframes_expr_const_values[FKF_N] += 1;
1112         } else if (   ost->forced_keyframes
1113                    && !strncmp(ost->forced_keyframes, "source", 6)
1114                    && in_picture->key_frame==1) {
1115             forced_keyframe = 1;
1116         }
1117
1118         if (forced_keyframe) {
1119             in_picture->pict_type = AV_PICTURE_TYPE_I;
1120             av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
1121         }
1122
1123         update_benchmark(NULL);
1124         if (debug_ts) {
1125             av_log(NULL, AV_LOG_INFO, "encoder <- type:video "
1126                    "frame_pts:%s frame_pts_time:%s time_base:%d/%d\n",
1127                    av_ts2str(in_picture->pts), av_ts2timestr(in_picture->pts, &enc->time_base),
1128                    enc->time_base.num, enc->time_base.den);
1129         }
1130
1131         ost->frames_encoded++;
1132
1133         ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
1134         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
1135         if (ret < 0) {
1136             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1137             exit_program(1);
1138         }
1139
1140         if (got_packet) {
1141             if (debug_ts) {
1142                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1143                        "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1144                        av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &enc->time_base),
1145                        av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &enc->time_base));
1146             }
1147
1148             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
1149                 pkt.pts = ost->sync_opts;
1150
1151             av_packet_rescale_ts(&pkt, enc->time_base, ost->st->time_base);
1152
1153             if (debug_ts) {
1154                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1155                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1156                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1157                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1158             }
1159
1160             frame_size = pkt.size;
1161             write_frame(s, &pkt, ost);
1162
1163             /* if two pass, output log */
1164             if (ost->logfile && enc->stats_out) {
1165                 fprintf(ost->logfile, "%s", enc->stats_out);
1166             }
1167         }
1168     }
1169     ost->sync_opts++;
1170     /*
1171      * For video, number of frames in == number of packets out.
1172      * But there may be reordering, so we can't throw away frames on encoder
1173      * flush, we need to limit them here, before they go into encoder.
1174      */
1175     ost->frame_number++;
1176
1177     if (vstats_filename && frame_size)
1178         do_video_stats(ost, frame_size);
1179   }
1180
1181     if (!ost->last_frame)
1182         ost->last_frame = av_frame_alloc();
1183     av_frame_unref(ost->last_frame);
1184     if (next_picture)
1185         av_frame_ref(ost->last_frame, next_picture);
1186     else
1187         av_frame_free(&ost->last_frame);
1188 }
1189
1190 static double psnr(double d)
1191 {
1192     return -10.0 * log(d) / log(10.0);
1193 }
1194
1195 static void do_video_stats(OutputStream *ost, int frame_size)
1196 {
1197     AVCodecContext *enc;
1198     int frame_number;
1199     double ti1, bitrate, avg_bitrate;
1200
1201     /* this is executed just the first time do_video_stats is called */
1202     if (!vstats_file) {
1203         vstats_file = fopen(vstats_filename, "w");
1204         if (!vstats_file) {
1205             perror("fopen");
1206             exit_program(1);
1207         }
1208     }
1209
1210     enc = ost->enc_ctx;
1211     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1212         frame_number = ost->st->nb_frames;
1213         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame ? enc->coded_frame->quality / (float)FF_QP2LAMBDA : 0);
1214         if (enc->coded_frame && (enc->flags&CODEC_FLAG_PSNR))
1215             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1216
1217         fprintf(vstats_file,"f_size= %6d ", frame_size);
1218         /* compute pts value */
1219         ti1 = av_stream_get_end_pts(ost->st) * av_q2d(ost->st->time_base);
1220         if (ti1 < 0.01)
1221             ti1 = 0.01;
1222
1223         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1224         avg_bitrate = (double)(ost->data_size * 8) / ti1 / 1000.0;
1225         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1226                (double)ost->data_size / 1024, ti1, bitrate, avg_bitrate);
1227         fprintf(vstats_file, "type= %c\n", enc->coded_frame ? av_get_picture_type_char(enc->coded_frame->pict_type) : 'I');
1228     }
1229 }
1230
1231 static void finish_output_stream(OutputStream *ost)
1232 {
1233     OutputFile *of = output_files[ost->file_index];
1234     int i;
1235
1236     ost->finished = ENCODER_FINISHED | MUXER_FINISHED;
1237
1238     if (of->shortest) {
1239         for (i = 0; i < of->ctx->nb_streams; i++)
1240             output_streams[of->ost_index + i]->finished = ENCODER_FINISHED | MUXER_FINISHED;
1241     }
1242 }
1243
1244 /**
1245  * Get and encode new output from any of the filtergraphs, without causing
1246  * activity.
1247  *
1248  * @return  0 for success, <0 for severe errors
1249  */
1250 static int reap_filters(int flush)
1251 {
1252     AVFrame *filtered_frame = NULL;
1253     int i;
1254
1255     /* Reap all buffers present in the buffer sinks */
1256     for (i = 0; i < nb_output_streams; i++) {
1257         OutputStream *ost = output_streams[i];
1258         OutputFile    *of = output_files[ost->file_index];
1259         AVFilterContext *filter;
1260         AVCodecContext *enc = ost->enc_ctx;
1261         int ret = 0;
1262
1263         if (!ost->filter)
1264             continue;
1265         filter = ost->filter->filter;
1266
1267         if (!ost->filtered_frame && !(ost->filtered_frame = av_frame_alloc())) {
1268             return AVERROR(ENOMEM);
1269         }
1270         filtered_frame = ost->filtered_frame;
1271
1272         while (1) {
1273             double float_pts = AV_NOPTS_VALUE; // this is identical to filtered_frame.pts but with higher precision
1274             ret = av_buffersink_get_frame_flags(filter, filtered_frame,
1275                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1276             if (ret < 0) {
1277                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1278                     av_log(NULL, AV_LOG_WARNING,
1279                            "Error in av_buffersink_get_frame_flags(): %s\n", av_err2str(ret));
1280                 } else if (flush && ret == AVERROR_EOF) {
1281                     if (filter->inputs[0]->type == AVMEDIA_TYPE_VIDEO)
1282                         do_video_out(of->ctx, ost, NULL, AV_NOPTS_VALUE);
1283                 }
1284                 break;
1285             }
1286             if (ost->finished) {
1287                 av_frame_unref(filtered_frame);
1288                 continue;
1289             }
1290             if (filtered_frame->pts != AV_NOPTS_VALUE) {
1291                 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1292                 AVRational tb = enc->time_base;
1293                 int extra_bits = av_clip(29 - av_log2(tb.den), 0, 16);
1294
1295                 tb.den <<= extra_bits;
1296                 float_pts =
1297                     av_rescale_q(filtered_frame->pts, filter->inputs[0]->time_base, tb) -
1298                     av_rescale_q(start_time, AV_TIME_BASE_Q, tb);
1299                 float_pts /= 1 << extra_bits;
1300                 // avoid exact midoints to reduce the chance of rounding differences, this can be removed in case the fps code is changed to work with integers
1301                 float_pts += FFSIGN(float_pts) * 1.0 / (1<<17);
1302
1303                 filtered_frame->pts =
1304                     av_rescale_q(filtered_frame->pts, filter->inputs[0]->time_base, enc->time_base) -
1305                     av_rescale_q(start_time, AV_TIME_BASE_Q, enc->time_base);
1306             }
1307             //if (ost->source_index >= 0)
1308             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1309
1310             switch (filter->inputs[0]->type) {
1311             case AVMEDIA_TYPE_VIDEO:
1312                 if (!ost->frame_aspect_ratio.num)
1313                     enc->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
1314
1315                 if (debug_ts) {
1316                     av_log(NULL, AV_LOG_INFO, "filter -> pts:%s pts_time:%s exact:%f time_base:%d/%d\n",
1317                             av_ts2str(filtered_frame->pts), av_ts2timestr(filtered_frame->pts, &enc->time_base),
1318                             float_pts,
1319                             enc->time_base.num, enc->time_base.den);
1320                 }
1321
1322                 do_video_out(of->ctx, ost, filtered_frame, float_pts);
1323                 break;
1324             case AVMEDIA_TYPE_AUDIO:
1325                 if (!(enc->codec->capabilities & CODEC_CAP_PARAM_CHANGE) &&
1326                     enc->channels != av_frame_get_channels(filtered_frame)) {
1327                     av_log(NULL, AV_LOG_ERROR,
1328                            "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
1329                     break;
1330                 }
1331                 do_audio_out(of->ctx, ost, filtered_frame);
1332                 break;
1333             default:
1334                 // TODO support subtitle filters
1335                 av_assert0(0);
1336             }
1337
1338             av_frame_unref(filtered_frame);
1339         }
1340     }
1341
1342     return 0;
1343 }
1344
1345 static void print_final_stats(int64_t total_size)
1346 {
1347     uint64_t video_size = 0, audio_size = 0, extra_size = 0, other_size = 0;
1348     uint64_t subtitle_size = 0;
1349     uint64_t data_size = 0;
1350     float percent = -1.0;
1351     int i, j;
1352     int pass1_used = 1;
1353
1354     for (i = 0; i < nb_output_streams; i++) {
1355         OutputStream *ost = output_streams[i];
1356         switch (ost->enc_ctx->codec_type) {
1357             case AVMEDIA_TYPE_VIDEO: video_size += ost->data_size; break;
1358             case AVMEDIA_TYPE_AUDIO: audio_size += ost->data_size; break;
1359             case AVMEDIA_TYPE_SUBTITLE: subtitle_size += ost->data_size; break;
1360             default:                 other_size += ost->data_size; break;
1361         }
1362         extra_size += ost->enc_ctx->extradata_size;
1363         data_size  += ost->data_size;
1364         if (   (ost->enc_ctx->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2))
1365             != CODEC_FLAG_PASS1)
1366             pass1_used = 0;
1367     }
1368
1369     if (data_size && total_size>0 && total_size >= data_size)
1370         percent = 100.0 * (total_size - data_size) / data_size;
1371
1372     av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0fkB other streams:%1.0fkB global headers:%1.0fkB muxing overhead: ",
1373            video_size / 1024.0,
1374            audio_size / 1024.0,
1375            subtitle_size / 1024.0,
1376            other_size / 1024.0,
1377            extra_size / 1024.0);
1378     if (percent >= 0.0)
1379         av_log(NULL, AV_LOG_INFO, "%f%%", percent);
1380     else
1381         av_log(NULL, AV_LOG_INFO, "unknown");
1382     av_log(NULL, AV_LOG_INFO, "\n");
1383
1384     /* print verbose per-stream stats */
1385     for (i = 0; i < nb_input_files; i++) {
1386         InputFile *f = input_files[i];
1387         uint64_t total_packets = 0, total_size = 0;
1388
1389         av_log(NULL, AV_LOG_VERBOSE, "Input file #%d (%s):\n",
1390                i, f->ctx->filename);
1391
1392         for (j = 0; j < f->nb_streams; j++) {
1393             InputStream *ist = input_streams[f->ist_index + j];
1394             enum AVMediaType type = ist->dec_ctx->codec_type;
1395
1396             total_size    += ist->data_size;
1397             total_packets += ist->nb_packets;
1398
1399             av_log(NULL, AV_LOG_VERBOSE, "  Input stream #%d:%d (%s): ",
1400                    i, j, media_type_string(type));
1401             av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets read (%"PRIu64" bytes); ",
1402                    ist->nb_packets, ist->data_size);
1403
1404             if (ist->decoding_needed) {
1405                 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames decoded",
1406                        ist->frames_decoded);
1407                 if (type == AVMEDIA_TYPE_AUDIO)
1408                     av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ist->samples_decoded);
1409                 av_log(NULL, AV_LOG_VERBOSE, "; ");
1410             }
1411
1412             av_log(NULL, AV_LOG_VERBOSE, "\n");
1413         }
1414
1415         av_log(NULL, AV_LOG_VERBOSE, "  Total: %"PRIu64" packets (%"PRIu64" bytes) demuxed\n",
1416                total_packets, total_size);
1417     }
1418
1419     for (i = 0; i < nb_output_files; i++) {
1420         OutputFile *of = output_files[i];
1421         uint64_t total_packets = 0, total_size = 0;
1422
1423         av_log(NULL, AV_LOG_VERBOSE, "Output file #%d (%s):\n",
1424                i, of->ctx->filename);
1425
1426         for (j = 0; j < of->ctx->nb_streams; j++) {
1427             OutputStream *ost = output_streams[of->ost_index + j];
1428             enum AVMediaType type = ost->enc_ctx->codec_type;
1429
1430             total_size    += ost->data_size;
1431             total_packets += ost->packets_written;
1432
1433             av_log(NULL, AV_LOG_VERBOSE, "  Output stream #%d:%d (%s): ",
1434                    i, j, media_type_string(type));
1435             if (ost->encoding_needed) {
1436                 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames encoded",
1437                        ost->frames_encoded);
1438                 if (type == AVMEDIA_TYPE_AUDIO)
1439                     av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ost->samples_encoded);
1440                 av_log(NULL, AV_LOG_VERBOSE, "; ");
1441             }
1442
1443             av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets muxed (%"PRIu64" bytes); ",
1444                    ost->packets_written, ost->data_size);
1445
1446             av_log(NULL, AV_LOG_VERBOSE, "\n");
1447         }
1448
1449         av_log(NULL, AV_LOG_VERBOSE, "  Total: %"PRIu64" packets (%"PRIu64" bytes) muxed\n",
1450                total_packets, total_size);
1451     }
1452     if(video_size + data_size + audio_size + subtitle_size + extra_size == 0){
1453         av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded ");
1454         if (pass1_used) {
1455             av_log(NULL, AV_LOG_WARNING, "\n");
1456         } else {
1457             av_log(NULL, AV_LOG_WARNING, "(check -ss / -t / -frames parameters if used)\n");
1458         }
1459     }
1460 }
1461
1462 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1463 {
1464     char buf[1024];
1465     AVBPrint buf_script;
1466     OutputStream *ost;
1467     AVFormatContext *oc;
1468     int64_t total_size;
1469     AVCodecContext *enc;
1470     int frame_number, vid, i;
1471     double bitrate;
1472     int64_t pts = INT64_MIN;
1473     static int64_t last_time = -1;
1474     static int qp_histogram[52];
1475     int hours, mins, secs, us;
1476
1477     if (!print_stats && !is_last_report && !progress_avio)
1478         return;
1479
1480     if (!is_last_report) {
1481         if (last_time == -1) {
1482             last_time = cur_time;
1483             return;
1484         }
1485         if ((cur_time - last_time) < 500000)
1486             return;
1487         last_time = cur_time;
1488     }
1489
1490
1491     oc = output_files[0]->ctx;
1492
1493     total_size = avio_size(oc->pb);
1494     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1495         total_size = avio_tell(oc->pb);
1496
1497     buf[0] = '\0';
1498     vid = 0;
1499     av_bprint_init(&buf_script, 0, 1);
1500     for (i = 0; i < nb_output_streams; i++) {
1501         float q = -1;
1502         ost = output_streams[i];
1503         enc = ost->enc_ctx;
1504         if (!ost->stream_copy && enc->coded_frame)
1505             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1506         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1507             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1508             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1509                        ost->file_index, ost->index, q);
1510         }
1511         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1512             float fps, t = (cur_time-timer_start) / 1000000.0;
1513
1514             frame_number = ost->frame_number;
1515             fps = t > 1 ? frame_number / t : 0;
1516             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1517                      frame_number, fps < 9.95, fps, q);
1518             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1519             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1520             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1521                        ost->file_index, ost->index, q);
1522             if (is_last_report)
1523                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1524             if (qp_hist) {
1525                 int j;
1526                 int qp = lrintf(q);
1527                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1528                     qp_histogram[qp]++;
1529                 for (j = 0; j < 32; j++)
1530                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1531             }
1532             if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1533                 int j;
1534                 double error, error_sum = 0;
1535                 double scale, scale_sum = 0;
1536                 double p;
1537                 char type[3] = { 'Y','U','V' };
1538                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1539                 for (j = 0; j < 3; j++) {
1540                     if (is_last_report) {
1541                         error = enc->error[j];
1542                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1543                     } else {
1544                         error = enc->coded_frame->error[j];
1545                         scale = enc->width * enc->height * 255.0 * 255.0;
1546                     }
1547                     if (j)
1548                         scale /= 4;
1549                     error_sum += error;
1550                     scale_sum += scale;
1551                     p = psnr(error / scale);
1552                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1553                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1554                                ost->file_index, ost->index, type[j] | 32, p);
1555                 }
1556                 p = psnr(error_sum / scale_sum);
1557                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1558                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1559                            ost->file_index, ost->index, p);
1560             }
1561             vid = 1;
1562         }
1563         /* compute min output value */
1564         if (av_stream_get_end_pts(ost->st) != AV_NOPTS_VALUE)
1565             pts = FFMAX(pts, av_rescale_q(av_stream_get_end_pts(ost->st),
1566                                           ost->st->time_base, AV_TIME_BASE_Q));
1567         if (is_last_report)
1568             nb_frames_drop += ost->last_droped;
1569     }
1570
1571     secs = FFABS(pts) / AV_TIME_BASE;
1572     us = FFABS(pts) % AV_TIME_BASE;
1573     mins = secs / 60;
1574     secs %= 60;
1575     hours = mins / 60;
1576     mins %= 60;
1577
1578     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1579
1580     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1581                                  "size=N/A time=");
1582     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1583                                  "size=%8.0fkB time=", total_size / 1024.0);
1584     if (pts < 0)
1585         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "-");
1586     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1587              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1588              (100 * us) / AV_TIME_BASE);
1589
1590     if (bitrate < 0) {
1591         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),"bitrate=N/A");
1592         av_bprintf(&buf_script, "bitrate=N/A\n");
1593     }else{
1594         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),"bitrate=%6.1fkbits/s", bitrate);
1595         av_bprintf(&buf_script, "bitrate=%6.1fkbits/s\n", bitrate);
1596     }
1597
1598     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
1599     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1600     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1601     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1602                hours, mins, secs, us);
1603
1604     if (nb_frames_dup || nb_frames_drop)
1605         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1606                 nb_frames_dup, nb_frames_drop);
1607     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1608     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1609
1610     if (print_stats || is_last_report) {
1611         const char end = is_last_report ? '\n' : '\r';
1612         if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
1613             fprintf(stderr, "%s    %c", buf, end);
1614         } else
1615             av_log(NULL, AV_LOG_INFO, "%s    %c", buf, end);
1616
1617     fflush(stderr);
1618     }
1619
1620     if (progress_avio) {
1621         av_bprintf(&buf_script, "progress=%s\n",
1622                    is_last_report ? "end" : "continue");
1623         avio_write(progress_avio, buf_script.str,
1624                    FFMIN(buf_script.len, buf_script.size - 1));
1625         avio_flush(progress_avio);
1626         av_bprint_finalize(&buf_script, NULL);
1627         if (is_last_report) {
1628             avio_closep(&progress_avio);
1629         }
1630     }
1631
1632     if (is_last_report)
1633         print_final_stats(total_size);
1634 }
1635
1636 static void flush_encoders(void)
1637 {
1638     int i, ret;
1639
1640     for (i = 0; i < nb_output_streams; i++) {
1641         OutputStream   *ost = output_streams[i];
1642         AVCodecContext *enc = ost->enc_ctx;
1643         AVFormatContext *os = output_files[ost->file_index]->ctx;
1644         int stop_encoding = 0;
1645
1646         if (!ost->encoding_needed)
1647             continue;
1648
1649         if (enc->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1650             continue;
1651         if (enc->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1652             continue;
1653
1654         for (;;) {
1655             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1656             const char *desc;
1657
1658             switch (enc->codec_type) {
1659             case AVMEDIA_TYPE_AUDIO:
1660                 encode = avcodec_encode_audio2;
1661                 desc   = "Audio";
1662                 break;
1663             case AVMEDIA_TYPE_VIDEO:
1664                 encode = avcodec_encode_video2;
1665                 desc   = "Video";
1666                 break;
1667             default:
1668                 stop_encoding = 1;
1669             }
1670
1671             if (encode) {
1672                 AVPacket pkt;
1673                 int pkt_size;
1674                 int got_packet;
1675                 av_init_packet(&pkt);
1676                 pkt.data = NULL;
1677                 pkt.size = 0;
1678
1679                 update_benchmark(NULL);
1680                 ret = encode(enc, &pkt, NULL, &got_packet);
1681                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1682                 if (ret < 0) {
1683                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1684                     exit_program(1);
1685                 }
1686                 if (ost->logfile && enc->stats_out) {
1687                     fprintf(ost->logfile, "%s", enc->stats_out);
1688                 }
1689                 if (!got_packet) {
1690                     stop_encoding = 1;
1691                     break;
1692                 }
1693                 if (ost->finished & MUXER_FINISHED) {
1694                     av_free_packet(&pkt);
1695                     continue;
1696                 }
1697                 av_packet_rescale_ts(&pkt, enc->time_base, ost->st->time_base);
1698                 pkt_size = pkt.size;
1699                 write_frame(os, &pkt, ost);
1700                 if (ost->enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
1701                     do_video_stats(ost, pkt_size);
1702                 }
1703             }
1704
1705             if (stop_encoding)
1706                 break;
1707         }
1708     }
1709 }
1710
1711 /*
1712  * Check whether a packet from ist should be written into ost at this time
1713  */
1714 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1715 {
1716     OutputFile *of = output_files[ost->file_index];
1717     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1718
1719     if (ost->source_index != ist_index)
1720         return 0;
1721
1722     if (ost->finished)
1723         return 0;
1724
1725     if (of->start_time != AV_NOPTS_VALUE && ist->pts < of->start_time)
1726         return 0;
1727
1728     return 1;
1729 }
1730
1731 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1732 {
1733     OutputFile *of = output_files[ost->file_index];
1734     InputFile   *f = input_files [ist->file_index];
1735     int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1736     int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1737     int64_t ist_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ist->st->time_base);
1738     AVPicture pict;
1739     AVPacket opkt;
1740
1741     av_init_packet(&opkt);
1742
1743     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1744         !ost->copy_initial_nonkeyframes)
1745         return;
1746
1747     if (pkt->pts == AV_NOPTS_VALUE) {
1748         if (!ost->frame_number && ist->pts < start_time &&
1749             !ost->copy_prior_start)
1750             return;
1751     } else {
1752         if (!ost->frame_number && pkt->pts < ist_tb_start_time &&
1753             !ost->copy_prior_start)
1754             return;
1755     }
1756
1757     if (of->recording_time != INT64_MAX &&
1758         ist->pts >= of->recording_time + start_time) {
1759         close_output_stream(ost);
1760         return;
1761     }
1762
1763     if (f->recording_time != INT64_MAX) {
1764         start_time = f->ctx->start_time;
1765         if (f->start_time != AV_NOPTS_VALUE)
1766             start_time += f->start_time;
1767         if (ist->pts >= f->recording_time + start_time) {
1768             close_output_stream(ost);
1769             return;
1770         }
1771     }
1772
1773     /* force the input stream PTS */
1774     if (ost->enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO)
1775         ost->sync_opts++;
1776
1777     if (pkt->pts != AV_NOPTS_VALUE)
1778         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1779     else
1780         opkt.pts = AV_NOPTS_VALUE;
1781
1782     if (pkt->dts == AV_NOPTS_VALUE)
1783         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1784     else
1785         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1786     opkt.dts -= ost_tb_start_time;
1787
1788     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1789         int duration = av_get_audio_frame_duration(ist->dec_ctx, pkt->size);
1790         if(!duration)
1791             duration = ist->dec_ctx->frame_size;
1792         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1793                                                (AVRational){1, ist->dec_ctx->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
1794                                                ost->st->time_base) - ost_tb_start_time;
1795     }
1796
1797     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1798     opkt.flags    = pkt->flags;
1799
1800     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1801     if (  ost->enc_ctx->codec_id != AV_CODEC_ID_H264
1802        && ost->enc_ctx->codec_id != AV_CODEC_ID_MPEG1VIDEO
1803        && ost->enc_ctx->codec_id != AV_CODEC_ID_MPEG2VIDEO
1804        && ost->enc_ctx->codec_id != AV_CODEC_ID_VC1
1805        ) {
1806         if (av_parser_change(ost->parser, ost->st->codec,
1807                              &opkt.data, &opkt.size,
1808                              pkt->data, pkt->size,
1809                              pkt->flags & AV_PKT_FLAG_KEY)) {
1810             opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1811             if (!opkt.buf)
1812                 exit_program(1);
1813         }
1814     } else {
1815         opkt.data = pkt->data;
1816         opkt.size = pkt->size;
1817     }
1818     av_copy_packet_side_data(&opkt, pkt);
1819
1820     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1821         /* store AVPicture in AVPacket, as expected by the output format */
1822         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1823         opkt.data = (uint8_t *)&pict;
1824         opkt.size = sizeof(AVPicture);
1825         opkt.flags |= AV_PKT_FLAG_KEY;
1826     }
1827
1828     write_frame(of->ctx, &opkt, ost);
1829 }
1830
1831 int guess_input_channel_layout(InputStream *ist)
1832 {
1833     AVCodecContext *dec = ist->dec_ctx;
1834
1835     if (!dec->channel_layout) {
1836         char layout_name[256];
1837
1838         if (dec->channels > ist->guess_layout_max)
1839             return 0;
1840         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1841         if (!dec->channel_layout)
1842             return 0;
1843         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1844                                      dec->channels, dec->channel_layout);
1845         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1846                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1847     }
1848     return 1;
1849 }
1850
1851 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1852 {
1853     AVFrame *decoded_frame, *f;
1854     AVCodecContext *avctx = ist->dec_ctx;
1855     int i, ret, err = 0, resample_changed;
1856     AVRational decoded_frame_tb;
1857
1858     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1859         return AVERROR(ENOMEM);
1860     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1861         return AVERROR(ENOMEM);
1862     decoded_frame = ist->decoded_frame;
1863
1864     update_benchmark(NULL);
1865     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1866     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1867
1868     if (ret >= 0 && avctx->sample_rate <= 0) {
1869         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1870         ret = AVERROR_INVALIDDATA;
1871     }
1872
1873     if (*got_output || ret<0 || pkt->size)
1874         decode_error_stat[ret<0] ++;
1875
1876     if (!*got_output || ret < 0)
1877         return ret;
1878
1879     ist->samples_decoded += decoded_frame->nb_samples;
1880     ist->frames_decoded++;
1881
1882 #if 1
1883     /* increment next_dts to use for the case where the input stream does not
1884        have timestamps or there are multiple frames in the packet */
1885     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1886                      avctx->sample_rate;
1887     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1888                      avctx->sample_rate;
1889 #endif
1890
1891     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1892                        ist->resample_channels       != avctx->channels               ||
1893                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1894                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1895     if (resample_changed) {
1896         char layout1[64], layout2[64];
1897
1898         if (!guess_input_channel_layout(ist)) {
1899             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1900                    "layout for Input Stream #%d.%d\n", ist->file_index,
1901                    ist->st->index);
1902             exit_program(1);
1903         }
1904         decoded_frame->channel_layout = avctx->channel_layout;
1905
1906         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1907                                      ist->resample_channel_layout);
1908         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1909                                      decoded_frame->channel_layout);
1910
1911         av_log(NULL, AV_LOG_INFO,
1912                "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",
1913                ist->file_index, ist->st->index,
1914                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1915                ist->resample_channels, layout1,
1916                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1917                avctx->channels, layout2);
1918
1919         ist->resample_sample_fmt     = decoded_frame->format;
1920         ist->resample_sample_rate    = decoded_frame->sample_rate;
1921         ist->resample_channel_layout = decoded_frame->channel_layout;
1922         ist->resample_channels       = avctx->channels;
1923
1924         for (i = 0; i < nb_filtergraphs; i++)
1925             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1926                 FilterGraph *fg = filtergraphs[i];
1927                 if (configure_filtergraph(fg) < 0) {
1928                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1929                     exit_program(1);
1930                 }
1931             }
1932     }
1933
1934     /* if the decoder provides a pts, use it instead of the last packet pts.
1935        the decoder could be delaying output by a packet or more. */
1936     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1937         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1938         decoded_frame_tb   = avctx->time_base;
1939     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1940         decoded_frame->pts = decoded_frame->pkt_pts;
1941         decoded_frame_tb   = ist->st->time_base;
1942     } else if (pkt->pts != AV_NOPTS_VALUE) {
1943         decoded_frame->pts = pkt->pts;
1944         decoded_frame_tb   = ist->st->time_base;
1945     }else {
1946         decoded_frame->pts = ist->dts;
1947         decoded_frame_tb   = AV_TIME_BASE_Q;
1948     }
1949     pkt->pts           = AV_NOPTS_VALUE;
1950     if (decoded_frame->pts != AV_NOPTS_VALUE)
1951         decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
1952                                               (AVRational){1, avctx->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
1953                                               (AVRational){1, avctx->sample_rate});
1954     for (i = 0; i < ist->nb_filters; i++) {
1955         if (i < ist->nb_filters - 1) {
1956             f = ist->filter_frame;
1957             err = av_frame_ref(f, decoded_frame);
1958             if (err < 0)
1959                 break;
1960         } else
1961             f = decoded_frame;
1962         err = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f,
1963                                      AV_BUFFERSRC_FLAG_PUSH);
1964         if (err == AVERROR_EOF)
1965             err = 0; /* ignore */
1966         if (err < 0)
1967             break;
1968     }
1969     decoded_frame->pts = AV_NOPTS_VALUE;
1970
1971     av_frame_unref(ist->filter_frame);
1972     av_frame_unref(decoded_frame);
1973     return err < 0 ? err : ret;
1974 }
1975
1976 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1977 {
1978     AVFrame *decoded_frame, *f;
1979     int i, ret = 0, err = 0, resample_changed;
1980     int64_t best_effort_timestamp;
1981     AVRational *frame_sample_aspect;
1982
1983     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1984         return AVERROR(ENOMEM);
1985     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1986         return AVERROR(ENOMEM);
1987     decoded_frame = ist->decoded_frame;
1988     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1989
1990     update_benchmark(NULL);
1991     ret = avcodec_decode_video2(ist->dec_ctx,
1992                                 decoded_frame, got_output, pkt);
1993     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1994
1995     // The following line may be required in some cases where there is no parser
1996     // or the parser does not has_b_frames correctly
1997     if (ist->st->codec->has_b_frames < ist->dec_ctx->has_b_frames) {
1998         if (ist->dec_ctx->codec_id == AV_CODEC_ID_H264) {
1999             ist->st->codec->has_b_frames = ist->dec_ctx->has_b_frames;
2000         } else
2001             av_log_ask_for_sample(
2002                 ist->dec_ctx,
2003                 "has_b_frames is larger in decoder than demuxer %d > %d ",
2004                 ist->dec_ctx->has_b_frames,
2005                 ist->st->codec->has_b_frames
2006             );
2007     }
2008
2009     if (*got_output || ret<0 || pkt->size)
2010         decode_error_stat[ret<0] ++;
2011
2012     if (*got_output && ret >= 0) {
2013         if (ist->dec_ctx->width  != decoded_frame->width ||
2014             ist->dec_ctx->height != decoded_frame->height ||
2015             ist->dec_ctx->pix_fmt != decoded_frame->format) {
2016             av_log(NULL, AV_LOG_DEBUG, "Frame parameters mismatch context %d,%d,%d != %d,%d,%d\n",
2017                 decoded_frame->width,
2018                 decoded_frame->height,
2019                 decoded_frame->format,
2020                 ist->dec_ctx->width,
2021                 ist->dec_ctx->height,
2022                 ist->dec_ctx->pix_fmt);
2023         }
2024     }
2025
2026     if (!*got_output || ret < 0)
2027         return ret;
2028
2029     if(ist->top_field_first>=0)
2030         decoded_frame->top_field_first = ist->top_field_first;
2031
2032     ist->frames_decoded++;
2033
2034     if (ist->hwaccel_retrieve_data && decoded_frame->format == ist->hwaccel_pix_fmt) {
2035         err = ist->hwaccel_retrieve_data(ist->dec_ctx, decoded_frame);
2036         if (err < 0)
2037             goto fail;
2038     }
2039     ist->hwaccel_retrieved_pix_fmt = decoded_frame->format;
2040
2041     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
2042     if(best_effort_timestamp != AV_NOPTS_VALUE)
2043         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
2044
2045     if (debug_ts) {
2046         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
2047                "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d time_base:%d/%d\n",
2048                ist->st->index, av_ts2str(decoded_frame->pts),
2049                av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
2050                best_effort_timestamp,
2051                av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
2052                decoded_frame->key_frame, decoded_frame->pict_type,
2053                ist->st->time_base.num, ist->st->time_base.den);
2054     }
2055
2056     pkt->size = 0;
2057
2058     if (ist->st->sample_aspect_ratio.num)
2059         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
2060
2061     resample_changed = ist->resample_width   != decoded_frame->width  ||
2062                        ist->resample_height  != decoded_frame->height ||
2063                        ist->resample_pix_fmt != decoded_frame->format;
2064     if (resample_changed) {
2065         av_log(NULL, AV_LOG_INFO,
2066                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
2067                ist->file_index, ist->st->index,
2068                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
2069                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
2070
2071         ist->resample_width   = decoded_frame->width;
2072         ist->resample_height  = decoded_frame->height;
2073         ist->resample_pix_fmt = decoded_frame->format;
2074
2075         for (i = 0; i < nb_filtergraphs; i++) {
2076             if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
2077                 configure_filtergraph(filtergraphs[i]) < 0) {
2078                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
2079                 exit_program(1);
2080             }
2081         }
2082     }
2083
2084     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
2085     for (i = 0; i < ist->nb_filters; i++) {
2086         if (!frame_sample_aspect->num)
2087             *frame_sample_aspect = ist->st->sample_aspect_ratio;
2088
2089         if (i < ist->nb_filters - 1) {
2090             f = ist->filter_frame;
2091             err = av_frame_ref(f, decoded_frame);
2092             if (err < 0)
2093                 break;
2094         } else
2095             f = decoded_frame;
2096         ret = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f, AV_BUFFERSRC_FLAG_PUSH);
2097         if (ret == AVERROR_EOF) {
2098             ret = 0; /* ignore */
2099         } else if (ret < 0) {
2100             av_log(NULL, AV_LOG_FATAL,
2101                    "Failed to inject frame into filter network: %s\n", av_err2str(ret));
2102             exit_program(1);
2103         }
2104     }
2105
2106 fail:
2107     av_frame_unref(ist->filter_frame);
2108     av_frame_unref(decoded_frame);
2109     return err < 0 ? err : ret;
2110 }
2111
2112 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
2113 {
2114     AVSubtitle subtitle;
2115     int i, ret = avcodec_decode_subtitle2(ist->dec_ctx,
2116                                           &subtitle, got_output, pkt);
2117
2118     if (*got_output || ret<0 || pkt->size)
2119         decode_error_stat[ret<0] ++;
2120
2121     if (ret < 0 || !*got_output) {
2122         if (!pkt->size)
2123             sub2video_flush(ist);
2124         return ret;
2125     }
2126
2127     if (ist->fix_sub_duration) {
2128         int end = 1;
2129         if (ist->prev_sub.got_output) {
2130             end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
2131                              1000, AV_TIME_BASE);
2132             if (end < ist->prev_sub.subtitle.end_display_time) {
2133                 av_log(ist->dec_ctx, AV_LOG_DEBUG,
2134                        "Subtitle duration reduced from %d to %d%s\n",
2135                        ist->prev_sub.subtitle.end_display_time, end,
2136                        end <= 0 ? ", dropping it" : "");
2137                 ist->prev_sub.subtitle.end_display_time = end;
2138             }
2139         }
2140         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
2141         FFSWAP(int,        ret,         ist->prev_sub.ret);
2142         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
2143         if (end <= 0)
2144             goto out;
2145     }
2146
2147     if (!*got_output)
2148         return ret;
2149
2150     sub2video_update(ist, &subtitle);
2151
2152     if (!subtitle.num_rects)
2153         goto out;
2154
2155     ist->frames_decoded++;
2156
2157     for (i = 0; i < nb_output_streams; i++) {
2158         OutputStream *ost = output_streams[i];
2159
2160         if (!check_output_constraints(ist, ost) || !ost->encoding_needed
2161             || ost->enc->type != AVMEDIA_TYPE_SUBTITLE)
2162             continue;
2163
2164         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
2165     }
2166
2167 out:
2168     avsubtitle_free(&subtitle);
2169     return ret;
2170 }
2171
2172 static int send_filter_eof(InputStream *ist)
2173 {
2174     int i, ret;
2175     for (i = 0; i < ist->nb_filters; i++) {
2176 #if 1
2177         ret = av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
2178 #else
2179         ret = av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
2180 #endif
2181         if (ret < 0)
2182             return ret;
2183     }
2184     return 0;
2185 }
2186
2187 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2188 static int process_input_packet(InputStream *ist, const AVPacket *pkt)
2189 {
2190     int ret = 0, i;
2191     int got_output = 0;
2192
2193     AVPacket avpkt;
2194     if (!ist->saw_first_ts) {
2195         ist->dts = ist->st->avg_frame_rate.num ? - ist->dec_ctx->has_b_frames * AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
2196         ist->pts = 0;
2197         if (pkt && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
2198             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2199             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
2200         }
2201         ist->saw_first_ts = 1;
2202     }
2203
2204     if (ist->next_dts == AV_NOPTS_VALUE)
2205         ist->next_dts = ist->dts;
2206     if (ist->next_pts == AV_NOPTS_VALUE)
2207         ist->next_pts = ist->pts;
2208
2209     if (!pkt) {
2210         /* EOF handling */
2211         av_init_packet(&avpkt);
2212         avpkt.data = NULL;
2213         avpkt.size = 0;
2214         goto handle_eof;
2215     } else {
2216         avpkt = *pkt;
2217     }
2218
2219     if (pkt->dts != AV_NOPTS_VALUE) {
2220         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2221         if (ist->dec_ctx->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2222             ist->next_pts = ist->pts = ist->dts;
2223     }
2224
2225     // while we have more to decode or while the decoder did output something on EOF
2226     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2227         int duration;
2228     handle_eof:
2229
2230         ist->pts = ist->next_pts;
2231         ist->dts = ist->next_dts;
2232
2233         if (avpkt.size && avpkt.size != pkt->size &&
2234             !(ist->dec->capabilities & CODEC_CAP_SUBFRAMES)) {
2235             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2236                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2237             ist->showed_multi_packet_warning = 1;
2238         }
2239
2240         switch (ist->dec_ctx->codec_type) {
2241         case AVMEDIA_TYPE_AUDIO:
2242             ret = decode_audio    (ist, &avpkt, &got_output);
2243             break;
2244         case AVMEDIA_TYPE_VIDEO:
2245             ret = decode_video    (ist, &avpkt, &got_output);
2246             if (avpkt.duration) {
2247                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
2248             } else if(ist->dec_ctx->framerate.num != 0 && ist->dec_ctx->framerate.den != 0) {
2249                 int ticks= av_stream_get_parser(ist->st) ? av_stream_get_parser(ist->st)->repeat_pict+1 : ist->dec_ctx->ticks_per_frame;
2250                 duration = ((int64_t)AV_TIME_BASE *
2251                                 ist->dec_ctx->framerate.den * ticks) /
2252                                 ist->dec_ctx->framerate.num / ist->dec_ctx->ticks_per_frame;
2253             } else
2254                 duration = 0;
2255
2256             if(ist->dts != AV_NOPTS_VALUE && duration) {
2257                 ist->next_dts += duration;
2258             }else
2259                 ist->next_dts = AV_NOPTS_VALUE;
2260
2261             if (got_output)
2262                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
2263             break;
2264         case AVMEDIA_TYPE_SUBTITLE:
2265             ret = transcode_subtitles(ist, &avpkt, &got_output);
2266             break;
2267         default:
2268             return -1;
2269         }
2270
2271         if (ret < 0) {
2272             av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
2273                    ist->file_index, ist->st->index, av_err2str(ret));
2274             if (exit_on_error)
2275                 exit_program(1);
2276             break;
2277         }
2278
2279         avpkt.dts=
2280         avpkt.pts= AV_NOPTS_VALUE;
2281
2282         // touch data and size only if not EOF
2283         if (pkt) {
2284             if(ist->dec_ctx->codec_type != AVMEDIA_TYPE_AUDIO)
2285                 ret = avpkt.size;
2286             avpkt.data += ret;
2287             avpkt.size -= ret;
2288         }
2289         if (!got_output) {
2290             continue;
2291         }
2292         if (got_output && !pkt)
2293             break;
2294     }
2295
2296     /* after flushing, send an EOF on all the filter inputs attached to the stream */
2297     if (!pkt && ist->decoding_needed && !got_output) {
2298         int ret = send_filter_eof(ist);
2299         if (ret < 0) {
2300             av_log(NULL, AV_LOG_FATAL, "Error marking filters as finished\n");
2301             exit_program(1);
2302         }
2303     }
2304
2305     /* handle stream copy */
2306     if (!ist->decoding_needed) {
2307         ist->dts = ist->next_dts;
2308         switch (ist->dec_ctx->codec_type) {
2309         case AVMEDIA_TYPE_AUDIO:
2310             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->dec_ctx->frame_size) /
2311                              ist->dec_ctx->sample_rate;
2312             break;
2313         case AVMEDIA_TYPE_VIDEO:
2314             if (ist->framerate.num) {
2315                 // TODO: Remove work-around for c99-to-c89 issue 7
2316                 AVRational time_base_q = AV_TIME_BASE_Q;
2317                 int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate));
2318                 ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q);
2319             } else if (pkt->duration) {
2320                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2321             } else if(ist->dec_ctx->framerate.num != 0) {
2322                 int ticks= av_stream_get_parser(ist->st) ? av_stream_get_parser(ist->st)->repeat_pict + 1 : ist->dec_ctx->ticks_per_frame;
2323                 ist->next_dts += ((int64_t)AV_TIME_BASE *
2324                                   ist->dec_ctx->framerate.den * ticks) /
2325                                   ist->dec_ctx->framerate.num / ist->dec_ctx->ticks_per_frame;
2326             }
2327             break;
2328         }
2329         ist->pts = ist->dts;
2330         ist->next_pts = ist->next_dts;
2331     }
2332     for (i = 0; pkt && i < nb_output_streams; i++) {
2333         OutputStream *ost = output_streams[i];
2334
2335         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2336             continue;
2337
2338         do_streamcopy(ist, ost, pkt);
2339     }
2340
2341     return got_output;
2342 }
2343
2344 static void print_sdp(void)
2345 {
2346     char sdp[16384];
2347     int i;
2348     int j;
2349     AVIOContext *sdp_pb;
2350     AVFormatContext **avc = av_malloc_array(nb_output_files, sizeof(*avc));
2351
2352     if (!avc)
2353         exit_program(1);
2354     for (i = 0, j = 0; i < nb_output_files; i++) {
2355         if (!strcmp(output_files[i]->ctx->oformat->name, "rtp")) {
2356             avc[j] = output_files[i]->ctx;
2357             j++;
2358         }
2359     }
2360
2361     av_sdp_create(avc, j, sdp, sizeof(sdp));
2362
2363     if (!sdp_filename) {
2364         printf("SDP:\n%s\n", sdp);
2365         fflush(stdout);
2366     } else {
2367         if (avio_open2(&sdp_pb, sdp_filename, AVIO_FLAG_WRITE, &int_cb, NULL) < 0) {
2368             av_log(NULL, AV_LOG_ERROR, "Failed to open sdp file '%s'\n", sdp_filename);
2369         } else {
2370             avio_printf(sdp_pb, "SDP:\n%s", sdp);
2371             avio_closep(&sdp_pb);
2372             av_freep(&sdp_filename);
2373         }
2374     }
2375
2376     av_freep(&avc);
2377 }
2378
2379 static const HWAccel *get_hwaccel(enum AVPixelFormat pix_fmt)
2380 {
2381     int i;
2382     for (i = 0; hwaccels[i].name; i++)
2383         if (hwaccels[i].pix_fmt == pix_fmt)
2384             return &hwaccels[i];
2385     return NULL;
2386 }
2387
2388 static enum AVPixelFormat get_format(AVCodecContext *s, const enum AVPixelFormat *pix_fmts)
2389 {
2390     InputStream *ist = s->opaque;
2391     const enum AVPixelFormat *p;
2392     int ret;
2393
2394     for (p = pix_fmts; *p != -1; p++) {
2395         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(*p);
2396         const HWAccel *hwaccel;
2397
2398         if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
2399             break;
2400
2401         hwaccel = get_hwaccel(*p);
2402         if (!hwaccel ||
2403             (ist->active_hwaccel_id && ist->active_hwaccel_id != hwaccel->id) ||
2404             (ist->hwaccel_id != HWACCEL_AUTO && ist->hwaccel_id != hwaccel->id))
2405             continue;
2406
2407         ret = hwaccel->init(s);
2408         if (ret < 0) {
2409             if (ist->hwaccel_id == hwaccel->id) {
2410                 av_log(NULL, AV_LOG_FATAL,
2411                        "%s hwaccel requested for input stream #%d:%d, "
2412                        "but cannot be initialized.\n", hwaccel->name,
2413                        ist->file_index, ist->st->index);
2414                 return AV_PIX_FMT_NONE;
2415             }
2416             continue;
2417         }
2418         ist->active_hwaccel_id = hwaccel->id;
2419         ist->hwaccel_pix_fmt   = *p;
2420         break;
2421     }
2422
2423     return *p;
2424 }
2425
2426 static int get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
2427 {
2428     InputStream *ist = s->opaque;
2429
2430     if (ist->hwaccel_get_buffer && frame->format == ist->hwaccel_pix_fmt)
2431         return ist->hwaccel_get_buffer(s, frame, flags);
2432
2433     return avcodec_default_get_buffer2(s, frame, flags);
2434 }
2435
2436 static int init_input_stream(int ist_index, char *error, int error_len)
2437 {
2438     int ret;
2439     InputStream *ist = input_streams[ist_index];
2440
2441     if (ist->decoding_needed) {
2442         AVCodec *codec = ist->dec;
2443         if (!codec) {
2444             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2445                     avcodec_get_name(ist->dec_ctx->codec_id), ist->file_index, ist->st->index);
2446             return AVERROR(EINVAL);
2447         }
2448
2449         ist->dec_ctx->opaque                = ist;
2450         ist->dec_ctx->get_format            = get_format;
2451         ist->dec_ctx->get_buffer2           = get_buffer;
2452         ist->dec_ctx->thread_safe_callbacks = 1;
2453
2454         av_opt_set_int(ist->dec_ctx, "refcounted_frames", 1, 0);
2455         if (ist->dec_ctx->codec_id == AV_CODEC_ID_DVB_SUBTITLE &&
2456            (ist->decoding_needed & DECODING_FOR_OST)) {
2457             av_dict_set(&ist->decoder_opts, "compute_edt", "1", AV_DICT_DONT_OVERWRITE);
2458             if (ist->decoding_needed & DECODING_FOR_FILTER)
2459                 av_log(NULL, AV_LOG_WARNING, "Warning using DVB subtitles for filtering and output at the same time is not fully supported, also see -compute_edt [0|1]\n");
2460         }
2461
2462         if (!av_dict_get(ist->decoder_opts, "threads", NULL, 0))
2463             av_dict_set(&ist->decoder_opts, "threads", "auto", 0);
2464         if ((ret = avcodec_open2(ist->dec_ctx, codec, &ist->decoder_opts)) < 0) {
2465             if (ret == AVERROR_EXPERIMENTAL)
2466                 abort_codec_experimental(codec, 0);
2467
2468             snprintf(error, error_len,
2469                      "Error while opening decoder for input stream "
2470                      "#%d:%d : %s",
2471                      ist->file_index, ist->st->index, av_err2str(ret));
2472             return ret;
2473         }
2474         assert_avoptions(ist->decoder_opts);
2475     }
2476
2477     ist->next_pts = AV_NOPTS_VALUE;
2478     ist->next_dts = AV_NOPTS_VALUE;
2479
2480     return 0;
2481 }
2482
2483 static InputStream *get_input_stream(OutputStream *ost)
2484 {
2485     if (ost->source_index >= 0)
2486         return input_streams[ost->source_index];
2487     return NULL;
2488 }
2489
2490 static int compare_int64(const void *a, const void *b)
2491 {
2492     int64_t va = *(int64_t *)a, vb = *(int64_t *)b;
2493     return va < vb ? -1 : va > vb ? +1 : 0;
2494 }
2495
2496 static void parse_forced_key_frames(char *kf, OutputStream *ost,
2497                                     AVCodecContext *avctx)
2498 {
2499     char *p;
2500     int n = 1, i, size, index = 0;
2501     int64_t t, *pts;
2502
2503     for (p = kf; *p; p++)
2504         if (*p == ',')
2505             n++;
2506     size = n;
2507     pts = av_malloc_array(size, sizeof(*pts));
2508     if (!pts) {
2509         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
2510         exit_program(1);
2511     }
2512
2513     p = kf;
2514     for (i = 0; i < n; i++) {
2515         char *next = strchr(p, ',');
2516
2517         if (next)
2518             *next++ = 0;
2519
2520         if (!memcmp(p, "chapters", 8)) {
2521
2522             AVFormatContext *avf = output_files[ost->file_index]->ctx;
2523             int j;
2524
2525             if (avf->nb_chapters > INT_MAX - size ||
2526                 !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
2527                                      sizeof(*pts)))) {
2528                 av_log(NULL, AV_LOG_FATAL,
2529                        "Could not allocate forced key frames array.\n");
2530                 exit_program(1);
2531             }
2532             t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
2533             t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2534
2535             for (j = 0; j < avf->nb_chapters; j++) {
2536                 AVChapter *c = avf->chapters[j];
2537                 av_assert1(index < size);
2538                 pts[index++] = av_rescale_q(c->start, c->time_base,
2539                                             avctx->time_base) + t;
2540             }
2541
2542         } else {
2543
2544             t = parse_time_or_die("force_key_frames", p, 1);
2545             av_assert1(index < size);
2546             pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2547
2548         }
2549
2550         p = next;
2551     }
2552
2553     av_assert0(index == size);
2554     qsort(pts, size, sizeof(*pts), compare_int64);
2555     ost->forced_kf_count = size;
2556     ost->forced_kf_pts   = pts;
2557 }
2558
2559 static void report_new_stream(int input_index, AVPacket *pkt)
2560 {
2561     InputFile *file = input_files[input_index];
2562     AVStream *st = file->ctx->streams[pkt->stream_index];
2563
2564     if (pkt->stream_index < file->nb_streams_warn)
2565         return;
2566     av_log(file->ctx, AV_LOG_WARNING,
2567            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
2568            av_get_media_type_string(st->codec->codec_type),
2569            input_index, pkt->stream_index,
2570            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
2571     file->nb_streams_warn = pkt->stream_index + 1;
2572 }
2573
2574 static void set_encoder_id(OutputFile *of, OutputStream *ost)
2575 {
2576     AVDictionaryEntry *e;
2577
2578     uint8_t *encoder_string;
2579     int encoder_string_len;
2580     int format_flags = 0;
2581     int codec_flags = 0;
2582
2583     if (av_dict_get(ost->st->metadata, "encoder",  NULL, 0))
2584         return;
2585
2586     e = av_dict_get(of->opts, "fflags", NULL, 0);
2587     if (e) {
2588         const AVOption *o = av_opt_find(of->ctx, "fflags", NULL, 0, 0);
2589         if (!o)
2590             return;
2591         av_opt_eval_flags(of->ctx, o, e->value, &format_flags);
2592     }
2593     e = av_dict_get(ost->encoder_opts, "flags", NULL, 0);
2594     if (e) {
2595         const AVOption *o = av_opt_find(ost->enc_ctx, "flags", NULL, 0, 0);
2596         if (!o)
2597             return;
2598         av_opt_eval_flags(ost->enc_ctx, o, e->value, &codec_flags);
2599     }
2600
2601     encoder_string_len = sizeof(LIBAVCODEC_IDENT) + strlen(ost->enc->name) + 2;
2602     encoder_string     = av_mallocz(encoder_string_len);
2603     if (!encoder_string)
2604         exit_program(1);
2605
2606     if (!(format_flags & AVFMT_FLAG_BITEXACT) && !(codec_flags & CODEC_FLAG_BITEXACT))
2607         av_strlcpy(encoder_string, LIBAVCODEC_IDENT " ", encoder_string_len);
2608     else
2609         av_strlcpy(encoder_string, "Lavc ", encoder_string_len);
2610     av_strlcat(encoder_string, ost->enc->name, encoder_string_len);
2611     av_dict_set(&ost->st->metadata, "encoder",  encoder_string,
2612                 AV_DICT_DONT_STRDUP_VAL | AV_DICT_DONT_OVERWRITE);
2613 }
2614
2615 static int transcode_init(void)
2616 {
2617     int ret = 0, i, j, k;
2618     AVFormatContext *oc;
2619     OutputStream *ost;
2620     InputStream *ist;
2621     char error[1024] = {0};
2622     int want_sdp = 1;
2623
2624     for (i = 0; i < nb_filtergraphs; i++) {
2625         FilterGraph *fg = filtergraphs[i];
2626         for (j = 0; j < fg->nb_outputs; j++) {
2627             OutputFilter *ofilter = fg->outputs[j];
2628             if (!ofilter->ost || ofilter->ost->source_index >= 0)
2629                 continue;
2630             if (fg->nb_inputs != 1)
2631                 continue;
2632             for (k = nb_input_streams-1; k >= 0 ; k--)
2633                 if (fg->inputs[0]->ist == input_streams[k])
2634                     break;
2635             ofilter->ost->source_index = k;
2636         }
2637     }
2638
2639     /* init framerate emulation */
2640     for (i = 0; i < nb_input_files; i++) {
2641         InputFile *ifile = input_files[i];
2642         if (ifile->rate_emu)
2643             for (j = 0; j < ifile->nb_streams; j++)
2644                 input_streams[j + ifile->ist_index]->start = av_gettime_relative();
2645     }
2646
2647     /* output stream init */
2648     for (i = 0; i < nb_output_files; i++) {
2649         oc = output_files[i]->ctx;
2650         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2651             av_dump_format(oc, i, oc->filename, 1);
2652             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2653             return AVERROR(EINVAL);
2654         }
2655     }
2656
2657     /* init complex filtergraphs */
2658     for (i = 0; i < nb_filtergraphs; i++)
2659         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2660             return ret;
2661
2662     /* for each output stream, we compute the right encoding parameters */
2663     for (i = 0; i < nb_output_streams; i++) {
2664         AVCodecContext *enc_ctx;
2665         AVCodecContext *dec_ctx = NULL;
2666         ost = output_streams[i];
2667         oc  = output_files[ost->file_index]->ctx;
2668         ist = get_input_stream(ost);
2669
2670         if (ost->attachment_filename)
2671             continue;
2672
2673         enc_ctx = ost->stream_copy ? ost->st->codec : ost->enc_ctx;
2674
2675         if (ist) {
2676             dec_ctx = ist->dec_ctx;
2677
2678             ost->st->disposition          = ist->st->disposition;
2679             enc_ctx->bits_per_raw_sample    = dec_ctx->bits_per_raw_sample;
2680             enc_ctx->chroma_sample_location = dec_ctx->chroma_sample_location;
2681         } else {
2682             for (j=0; j<oc->nb_streams; j++) {
2683                 AVStream *st = oc->streams[j];
2684                 if (st != ost->st && st->codec->codec_type == enc_ctx->codec_type)
2685                     break;
2686             }
2687             if (j == oc->nb_streams)
2688                 if (enc_ctx->codec_type == AVMEDIA_TYPE_AUDIO || enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO)
2689                     ost->st->disposition = AV_DISPOSITION_DEFAULT;
2690         }
2691
2692         if (ost->stream_copy) {
2693             AVRational sar;
2694             uint64_t extra_size;
2695
2696             av_assert0(ist && !ost->filter);
2697
2698             extra_size = (uint64_t)dec_ctx->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2699
2700             if (extra_size > INT_MAX) {
2701                 return AVERROR(EINVAL);
2702             }
2703
2704             /* if stream_copy is selected, no need to decode or encode */
2705             enc_ctx->codec_id   = dec_ctx->codec_id;
2706             enc_ctx->codec_type = dec_ctx->codec_type;
2707
2708             if (!enc_ctx->codec_tag) {
2709                 unsigned int codec_tag;
2710                 if (!oc->oformat->codec_tag ||
2711                      av_codec_get_id (oc->oformat->codec_tag, dec_ctx->codec_tag) == enc_ctx->codec_id ||
2712                      !av_codec_get_tag2(oc->oformat->codec_tag, dec_ctx->codec_id, &codec_tag))
2713                     enc_ctx->codec_tag = dec_ctx->codec_tag;
2714             }
2715
2716             enc_ctx->bit_rate       = dec_ctx->bit_rate;
2717             enc_ctx->rc_max_rate    = dec_ctx->rc_max_rate;
2718             enc_ctx->rc_buffer_size = dec_ctx->rc_buffer_size;
2719             enc_ctx->field_order    = dec_ctx->field_order;
2720             if (dec_ctx->extradata_size) {
2721                 enc_ctx->extradata      = av_mallocz(extra_size);
2722                 if (!enc_ctx->extradata) {
2723                     return AVERROR(ENOMEM);
2724                 }
2725                 memcpy(enc_ctx->extradata, dec_ctx->extradata, dec_ctx->extradata_size);
2726             }
2727             enc_ctx->extradata_size= dec_ctx->extradata_size;
2728             enc_ctx->bits_per_coded_sample  = dec_ctx->bits_per_coded_sample;
2729
2730             enc_ctx->time_base = ist->st->time_base;
2731             /*
2732              * Avi is a special case here because it supports variable fps but
2733              * having the fps and timebase differe significantly adds quite some
2734              * overhead
2735              */
2736             if(!strcmp(oc->oformat->name, "avi")) {
2737                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2738                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2739                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(dec_ctx->time_base)
2740                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(dec_ctx->time_base) < 1.0/500
2741                      || copy_tb==2){
2742                     enc_ctx->time_base.num = ist->st->r_frame_rate.den;
2743                     enc_ctx->time_base.den = 2*ist->st->r_frame_rate.num;
2744                     enc_ctx->ticks_per_frame = 2;
2745                 } else if (   copy_tb<0 && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2746                                  && av_q2d(ist->st->time_base) < 1.0/500
2747                     || copy_tb==0){
2748                     enc_ctx->time_base = dec_ctx->time_base;
2749                     enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
2750                     enc_ctx->time_base.den *= 2;
2751                     enc_ctx->ticks_per_frame = 2;
2752                 }
2753             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2754                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2755                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2756                       && strcmp(oc->oformat->name, "f4v")
2757             ) {
2758                 if(   copy_tb<0 && dec_ctx->time_base.den
2759                                 && av_q2d(dec_ctx->time_base)*dec_ctx->ticks_per_frame > av_q2d(ist->st->time_base)
2760                                 && av_q2d(ist->st->time_base) < 1.0/500
2761                    || copy_tb==0){
2762                     enc_ctx->time_base = dec_ctx->time_base;
2763                     enc_ctx->time_base.num *= dec_ctx->ticks_per_frame;
2764                 }
2765             }
2766             if (   enc_ctx->codec_tag == AV_RL32("tmcd")
2767                 && dec_ctx->time_base.num < dec_ctx->time_base.den
2768                 && dec_ctx->time_base.num > 0
2769                 && 121LL*dec_ctx->time_base.num > dec_ctx->time_base.den) {
2770                 enc_ctx->time_base = dec_ctx->time_base;
2771             }
2772
2773             if (ist && !ost->frame_rate.num)
2774                 ost->frame_rate = ist->framerate;
2775             if(ost->frame_rate.num)
2776                 enc_ctx->time_base = av_inv_q(ost->frame_rate);
2777
2778             av_reduce(&enc_ctx->time_base.num, &enc_ctx->time_base.den,
2779                         enc_ctx->time_base.num, enc_ctx->time_base.den, INT_MAX);
2780
2781             if (ist->st->nb_side_data) {
2782                 ost->st->side_data = av_realloc_array(NULL, ist->st->nb_side_data,
2783                                                       sizeof(*ist->st->side_data));
2784                 if (!ost->st->side_data)
2785                     return AVERROR(ENOMEM);
2786
2787                 ost->st->nb_side_data = 0;
2788                 for (j = 0; j < ist->st->nb_side_data; j++) {
2789                     const AVPacketSideData *sd_src = &ist->st->side_data[j];
2790                     AVPacketSideData *sd_dst = &ost->st->side_data[ost->st->nb_side_data];
2791
2792                     if (ost->rotate_overridden && sd_src->type == AV_PKT_DATA_DISPLAYMATRIX)
2793                         continue;
2794
2795                     sd_dst->data = av_malloc(sd_src->size);
2796                     if (!sd_dst->data)
2797                         return AVERROR(ENOMEM);
2798                     memcpy(sd_dst->data, sd_src->data, sd_src->size);
2799                     sd_dst->size = sd_src->size;
2800                     sd_dst->type = sd_src->type;
2801                     ost->st->nb_side_data++;
2802                 }
2803             }
2804
2805             ost->parser = av_parser_init(enc_ctx->codec_id);
2806
2807             switch (enc_ctx->codec_type) {
2808             case AVMEDIA_TYPE_AUDIO:
2809                 if (audio_volume != 256) {
2810                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2811                     exit_program(1);
2812                 }
2813                 enc_ctx->channel_layout     = dec_ctx->channel_layout;
2814                 enc_ctx->sample_rate        = dec_ctx->sample_rate;
2815                 enc_ctx->channels           = dec_ctx->channels;
2816                 enc_ctx->frame_size         = dec_ctx->frame_size;
2817                 enc_ctx->audio_service_type = dec_ctx->audio_service_type;
2818                 enc_ctx->block_align        = dec_ctx->block_align;
2819                 enc_ctx->initial_padding    = dec_ctx->delay;
2820 #if FF_API_AUDIOENC_DELAY
2821                 enc_ctx->delay              = dec_ctx->delay;
2822 #endif
2823                 if((enc_ctx->block_align == 1 || enc_ctx->block_align == 1152 || enc_ctx->block_align == 576) && enc_ctx->codec_id == AV_CODEC_ID_MP3)
2824                     enc_ctx->block_align= 0;
2825                 if(enc_ctx->codec_id == AV_CODEC_ID_AC3)
2826                     enc_ctx->block_align= 0;
2827                 break;
2828             case AVMEDIA_TYPE_VIDEO:
2829                 enc_ctx->pix_fmt            = dec_ctx->pix_fmt;
2830                 enc_ctx->width              = dec_ctx->width;
2831                 enc_ctx->height             = dec_ctx->height;
2832                 enc_ctx->has_b_frames       = dec_ctx->has_b_frames;
2833                 if (ost->frame_aspect_ratio.num) { // overridden by the -aspect cli option
2834                     sar =
2835                         av_mul_q(ost->frame_aspect_ratio,
2836                                  (AVRational){ enc_ctx->height, enc_ctx->width });
2837                     av_log(NULL, AV_LOG_WARNING, "Overriding aspect ratio "
2838                            "with stream copy may produce invalid files\n");
2839                 }
2840                 else if (ist->st->sample_aspect_ratio.num)
2841                     sar = ist->st->sample_aspect_ratio;
2842                 else
2843                     sar = dec_ctx->sample_aspect_ratio;
2844                 ost->st->sample_aspect_ratio = enc_ctx->sample_aspect_ratio = sar;
2845                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2846                 ost->st->r_frame_rate = ist->st->r_frame_rate;
2847                 break;
2848             case AVMEDIA_TYPE_SUBTITLE:
2849                 enc_ctx->width  = dec_ctx->width;
2850                 enc_ctx->height = dec_ctx->height;
2851                 break;
2852             case AVMEDIA_TYPE_UNKNOWN:
2853             case AVMEDIA_TYPE_DATA:
2854             case AVMEDIA_TYPE_ATTACHMENT:
2855                 break;
2856             default:
2857                 abort();
2858             }
2859         } else {
2860             if (!ost->enc)
2861                 ost->enc = avcodec_find_encoder(enc_ctx->codec_id);
2862             if (!ost->enc) {
2863                 /* should only happen when a default codec is not present. */
2864                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2865                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2866                 ret = AVERROR(EINVAL);
2867                 goto dump_format;
2868             }
2869
2870             if (ist)
2871                 ist->decoding_needed |= DECODING_FOR_OST;
2872             ost->encoding_needed = 1;
2873
2874             set_encoder_id(output_files[ost->file_index], ost);
2875
2876             if (!ost->filter &&
2877                 (enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO ||
2878                  enc_ctx->codec_type == AVMEDIA_TYPE_AUDIO)) {
2879                     FilterGraph *fg;
2880                     fg = init_simple_filtergraph(ist, ost);
2881                     if (configure_filtergraph(fg)) {
2882                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2883                         exit_program(1);
2884                     }
2885             }
2886
2887             if (enc_ctx->codec_type == AVMEDIA_TYPE_VIDEO) {
2888                 if (!ost->frame_rate.num)
2889                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2890                 if (ist && !ost->frame_rate.num)
2891                     ost->frame_rate = ist->framerate;
2892                 if (ist && !ost->frame_rate.num)
2893                     ost->frame_rate = ist->st->r_frame_rate;
2894                 if (ist && !ost->frame_rate.num) {
2895                     ost->frame_rate = (AVRational){25, 1};
2896                     av_log(NULL, AV_LOG_WARNING,
2897                            "No information "
2898                            "about the input framerate is available. Falling "
2899                            "back to a default value of 25fps for output stream #%d:%d. Use the -r option "
2900                            "if you want a different framerate.\n",
2901                            ost->file_index, ost->index);
2902                 }
2903 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2904                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2905                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2906                     ost->frame_rate = ost->enc->supported_framerates[idx];
2907                 }
2908                 // reduce frame rate for mpeg4 to be within the spec limits
2909                 if (enc_ctx->codec_id == AV_CODEC_ID_MPEG4) {
2910                     av_reduce(&ost->frame_rate.num, &ost->frame_rate.den,
2911                               ost->frame_rate.num, ost->frame_rate.den, 65535);
2912                 }
2913             }
2914
2915             switch (enc_ctx->codec_type) {
2916             case AVMEDIA_TYPE_AUDIO:
2917                 enc_ctx->sample_fmt     = ost->filter->filter->inputs[0]->format;
2918                 enc_ctx->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2919                 enc_ctx->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2920                 enc_ctx->channels       = avfilter_link_get_channels(ost->filter->filter->inputs[0]);
2921                 enc_ctx->time_base      = (AVRational){ 1, enc_ctx->sample_rate };
2922                 break;
2923             case AVMEDIA_TYPE_VIDEO:
2924                 enc_ctx->time_base = av_inv_q(ost->frame_rate);
2925                 if (!(enc_ctx->time_base.num && enc_ctx->time_base.den))
2926                     enc_ctx->time_base = ost->filter->filter->inputs[0]->time_base;
2927                 if (   av_q2d(enc_ctx->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2928                    && (video_sync_method == VSYNC_CFR || video_sync_method == VSYNC_VSCFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2929                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2930                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2931                 }
2932                 for (j = 0; j < ost->forced_kf_count; j++)
2933                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2934                                                          AV_TIME_BASE_Q,
2935                                                          enc_ctx->time_base);
2936
2937                 enc_ctx->width  = ost->filter->filter->inputs[0]->w;
2938                 enc_ctx->height = ost->filter->filter->inputs[0]->h;
2939                 enc_ctx->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2940                     ost->frame_aspect_ratio.num ? // overridden by the -aspect cli option
2941                     av_mul_q(ost->frame_aspect_ratio, (AVRational){ enc_ctx->height, enc_ctx->width }) :
2942                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2943                 if (!strncmp(ost->enc->name, "libx264", 7) &&
2944                     enc_ctx->pix_fmt == AV_PIX_FMT_NONE &&
2945                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2946                     av_log(NULL, AV_LOG_WARNING,
2947                            "No pixel format specified, %s for H.264 encoding chosen.\n"
2948                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2949                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2950                 if (!strncmp(ost->enc->name, "mpeg2video", 10) &&
2951                     enc_ctx->pix_fmt == AV_PIX_FMT_NONE &&
2952                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2953                     av_log(NULL, AV_LOG_WARNING,
2954                            "No pixel format specified, %s for MPEG-2 encoding chosen.\n"
2955                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2956                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2957                 enc_ctx->pix_fmt = ost->filter->filter->inputs[0]->format;
2958
2959                 ost->st->avg_frame_rate = ost->frame_rate;
2960
2961                 if (!dec_ctx ||
2962                     enc_ctx->width   != dec_ctx->width  ||
2963                     enc_ctx->height  != dec_ctx->height ||
2964                     enc_ctx->pix_fmt != dec_ctx->pix_fmt) {
2965                     enc_ctx->bits_per_raw_sample = frame_bits_per_raw_sample;
2966                 }
2967
2968                 if (ost->forced_keyframes) {
2969                     if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
2970                         ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
2971                                             forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
2972                         if (ret < 0) {
2973                             av_log(NULL, AV_LOG_ERROR,
2974                                    "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
2975                             return ret;
2976                         }
2977                         ost->forced_keyframes_expr_const_values[FKF_N] = 0;
2978                         ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
2979                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
2980                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;
2981
2982                         // Don't parse the 'forced_keyframes' in case of 'keep-source-keyframes',
2983                         // parse it only for static kf timings
2984                     } else if(strncmp(ost->forced_keyframes, "source", 6)) {
2985                         parse_forced_key_frames(ost->forced_keyframes, ost, ost->enc_ctx);
2986                     }
2987                 }
2988                 break;
2989             case AVMEDIA_TYPE_SUBTITLE:
2990                 enc_ctx->time_base = (AVRational){1, 1000};
2991                 if (!enc_ctx->width) {
2992                     enc_ctx->width     = input_streams[ost->source_index]->st->codec->width;
2993                     enc_ctx->height    = input_streams[ost->source_index]->st->codec->height;
2994                 }
2995                 break;
2996             case AVMEDIA_TYPE_DATA:
2997                 break;
2998             default:
2999                 abort();
3000                 break;
3001             }
3002             /* two pass mode */
3003             if (enc_ctx->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
3004                 char logfilename[1024];
3005                 FILE *f;
3006
3007                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
3008                          ost->logfile_prefix ? ost->logfile_prefix :
3009                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
3010                          i);
3011                 if (!strcmp(ost->enc->name, "libx264")) {
3012                     av_dict_set(&ost->encoder_opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
3013                 } else {
3014                     if (enc_ctx->flags & CODEC_FLAG_PASS2) {
3015                         char  *logbuffer;
3016                         size_t logbuffer_size;
3017                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
3018                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
3019                                    logfilename);
3020                             exit_program(1);
3021                         }
3022                         enc_ctx->stats_in = logbuffer;
3023                     }
3024                     if (enc_ctx->flags & CODEC_FLAG_PASS1) {
3025                         f = av_fopen_utf8(logfilename, "wb");
3026                         if (!f) {
3027                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
3028                                 logfilename, strerror(errno));
3029                             exit_program(1);
3030                         }
3031                         ost->logfile = f;
3032                     }
3033                 }
3034             }
3035         }
3036
3037         if (ost->disposition) {
3038             static const AVOption opts[] = {
3039                 { "disposition"         , NULL, 0, AV_OPT_TYPE_FLAGS, { .i64 = 0 }, INT64_MIN, INT64_MAX, .unit = "flags" },
3040                 { "default"             , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DEFAULT           },    .unit = "flags" },
3041                 { "dub"                 , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DUB               },    .unit = "flags" },
3042                 { "original"            , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_ORIGINAL          },    .unit = "flags" },
3043                 { "comment"             , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_COMMENT           },    .unit = "flags" },
3044                 { "lyrics"              , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_LYRICS            },    .unit = "flags" },
3045                 { "karaoke"             , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_KARAOKE           },    .unit = "flags" },
3046                 { "forced"              , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_FORCED            },    .unit = "flags" },
3047                 { "hearing_impaired"    , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_HEARING_IMPAIRED  },    .unit = "flags" },
3048                 { "visual_impaired"     , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_VISUAL_IMPAIRED   },    .unit = "flags" },
3049                 { "clean_effects"       , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_CLEAN_EFFECTS     },    .unit = "flags" },
3050                 { "captions"            , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_CAPTIONS          },    .unit = "flags" },
3051                 { "descriptions"        , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_DESCRIPTIONS      },    .unit = "flags" },
3052                 { "metadata"            , NULL, 0, AV_OPT_TYPE_CONST, { .i64 = AV_DISPOSITION_METADATA          },    .unit = "flags" },
3053                 { NULL },
3054             };
3055             static const AVClass class = {
3056                 .class_name = "",
3057                 .item_name  = av_default_item_name,
3058                 .option     = opts,
3059                 .version    = LIBAVUTIL_VERSION_INT,
3060             };
3061             const AVClass *pclass = &class;
3062
3063             ret = av_opt_eval_flags(&pclass, &opts[0], ost->disposition, &ost->st->disposition);
3064             if (ret < 0)
3065                 goto dump_format;
3066         }
3067     }
3068
3069     /* open each encoder */
3070     for (i = 0; i < nb_output_streams; i++) {
3071         ost = output_streams[i];
3072         if (ost->encoding_needed) {
3073             AVCodec      *codec = ost->enc;
3074             AVCodecContext *dec = NULL;
3075
3076             if ((ist = get_input_stream(ost)))
3077                 dec = ist->dec_ctx;
3078             if (dec && dec->subtitle_header) {
3079                 /* ASS code assumes this buffer is null terminated so add extra byte. */
3080                 ost->enc_ctx->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
3081                 if (!ost->enc_ctx->subtitle_header) {
3082                     ret = AVERROR(ENOMEM);
3083                     goto dump_format;
3084                 }
3085                 memcpy(ost->enc_ctx->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
3086                 ost->enc_ctx->subtitle_header_size = dec->subtitle_header_size;
3087             }
3088             if (!av_dict_get(ost->encoder_opts, "threads", NULL, 0))
3089                 av_dict_set(&ost->encoder_opts, "threads", "auto", 0);
3090             av_dict_set(&ost->encoder_opts, "side_data_only_packets", "1", 0);
3091
3092             if ((ret = avcodec_open2(ost->enc_ctx, codec, &ost->encoder_opts)) < 0) {
3093                 if (ret == AVERROR_EXPERIMENTAL)
3094                     abort_codec_experimental(codec, 1);
3095                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
3096                         ost->file_index, ost->index);
3097                 goto dump_format;
3098             }
3099             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
3100                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
3101                 av_buffersink_set_frame_size(ost->filter->filter,
3102                                              ost->enc_ctx->frame_size);
3103             assert_avoptions(ost->encoder_opts);
3104             if (ost->enc_ctx->bit_rate && ost->enc_ctx->bit_rate < 1000)
3105                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
3106                                              " It takes bits/s as argument, not kbits/s\n");
3107
3108             ret = avcodec_copy_context(ost->st->codec, ost->enc_ctx);
3109             if (ret < 0) {
3110                 av_log(NULL, AV_LOG_FATAL,
3111                        "Error initializing the output stream codec context.\n");
3112                 exit_program(1);
3113             }
3114
3115             // copy timebase while removing common factors
3116             ost->st->time_base = av_add_q(ost->enc_ctx->time_base, (AVRational){0, 1});
3117             ost->st->codec->codec= ost->enc_ctx->codec;
3118         } else {
3119             ret = av_opt_set_dict(ost->enc_ctx, &ost->encoder_opts);
3120             if (ret < 0) {
3121                 av_log(NULL, AV_LOG_FATAL,
3122                     "Error setting up codec context options.\n");
3123                 return ret;
3124             }
3125             // copy timebase while removing common factors
3126             ost->st->time_base = av_add_q(ost->st->codec->time_base, (AVRational){0, 1});
3127         }
3128     }
3129
3130     /* init input streams */
3131     for (i = 0; i < nb_input_streams; i++)
3132         if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
3133             for (i = 0; i < nb_output_streams; i++) {
3134                 ost = output_streams[i];
3135                 avcodec_close(ost->enc_ctx);
3136             }
3137             goto dump_format;
3138         }
3139
3140     /* discard unused programs */
3141     for (i = 0; i < nb_input_files; i++) {
3142         InputFile *ifile = input_files[i];
3143         for (j = 0; j < ifile->ctx->nb_programs; j++) {
3144             AVProgram *p = ifile->ctx->programs[j];
3145             int discard  = AVDISCARD_ALL;
3146
3147             for (k = 0; k < p->nb_stream_indexes; k++)
3148                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
3149                     discard = AVDISCARD_DEFAULT;
3150                     break;
3151                 }
3152             p->discard = discard;
3153         }
3154     }
3155
3156     /* open files and write file headers */
3157     for (i = 0; i < nb_output_files; i++) {
3158         oc = output_files[i]->ctx;
3159         oc->interrupt_callback = int_cb;
3160         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
3161             snprintf(error, sizeof(error),
3162                      "Could not write header for output file #%d "
3163                      "(incorrect codec parameters ?): %s",
3164                      i, av_err2str(ret));
3165             ret = AVERROR(EINVAL);
3166             goto dump_format;
3167         }
3168 //         assert_avoptions(output_files[i]->opts);
3169         if (strcmp(oc->oformat->name, "rtp")) {
3170             want_sdp = 0;
3171         }
3172     }
3173
3174  dump_format:
3175     /* dump the file output parameters - cannot be done before in case
3176        of stream copy */
3177     for (i = 0; i < nb_output_files; i++) {
3178         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
3179     }
3180
3181     /* dump the stream mapping */
3182     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
3183     for (i = 0; i < nb_input_streams; i++) {
3184         ist = input_streams[i];
3185
3186         for (j = 0; j < ist->nb_filters; j++) {
3187             if (ist->filters[j]->graph->graph_desc) {
3188                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
3189                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
3190                        ist->filters[j]->name);
3191                 if (nb_filtergraphs > 1)
3192                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
3193                 av_log(NULL, AV_LOG_INFO, "\n");
3194             }
3195         }
3196     }
3197
3198     for (i = 0; i < nb_output_streams; i++) {
3199         ost = output_streams[i];
3200
3201         if (ost->attachment_filename) {
3202             /* an attached file */
3203             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
3204                    ost->attachment_filename, ost->file_index, ost->index);
3205             continue;
3206         }
3207
3208         if (ost->filter && ost->filter->graph->graph_desc) {
3209             /* output from a complex graph */
3210             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
3211             if (nb_filtergraphs > 1)
3212                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
3213
3214             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
3215                    ost->index, ost->enc ? ost->enc->name : "?");
3216             continue;
3217         }
3218
3219         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
3220                input_streams[ost->source_index]->file_index,
3221                input_streams[ost->source_index]->st->index,
3222                ost->file_index,
3223                ost->index);
3224         if (ost->sync_ist != input_streams[ost->source_index])
3225             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
3226                    ost->sync_ist->file_index,
3227                    ost->sync_ist->st->index);
3228         if (ost->stream_copy)
3229             av_log(NULL, AV_LOG_INFO, " (copy)");
3230         else {
3231             const AVCodec *in_codec    = input_streams[ost->source_index]->dec;
3232             const AVCodec *out_codec   = ost->enc;
3233             const char *decoder_name   = "?";
3234             const char *in_codec_name  = "?";
3235             const char *encoder_name   = "?";
3236             const char *out_codec_name = "?";
3237             const AVCodecDescriptor *desc;
3238
3239             if (in_codec) {
3240                 decoder_name  = in_codec->name;
3241                 desc = avcodec_descriptor_get(in_codec->id);
3242                 if (desc)
3243                     in_codec_name = desc->name;
3244                 if (!strcmp(decoder_name, in_codec_name))
3245                     decoder_name = "native";
3246             }
3247
3248             if (out_codec) {
3249                 encoder_name   = out_codec->name;
3250                 desc = avcodec_descriptor_get(out_codec->id);
3251                 if (desc)
3252                     out_codec_name = desc->name;
3253                 if (!strcmp(encoder_name, out_codec_name))
3254                     encoder_name = "native";
3255             }
3256
3257             av_log(NULL, AV_LOG_INFO, " (%s (%s) -> %s (%s))",
3258                    in_codec_name, decoder_name,
3259                    out_codec_name, encoder_name);
3260         }
3261         av_log(NULL, AV_LOG_INFO, "\n");
3262     }
3263
3264     if (ret) {
3265         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
3266         return ret;
3267     }
3268
3269     if (sdp_filename || want_sdp) {
3270         print_sdp();
3271     }
3272
3273     transcode_init_done = 1;
3274
3275     return 0;
3276 }
3277
3278 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
3279 static int need_output(void)
3280 {
3281     int i;
3282
3283     for (i = 0; i < nb_output_streams; i++) {
3284         OutputStream *ost    = output_streams[i];
3285         OutputFile *of       = output_files[ost->file_index];
3286         AVFormatContext *os  = output_files[ost->file_index]->ctx;
3287
3288         if (ost->finished ||
3289             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
3290             continue;
3291         if (ost->frame_number >= ost->max_frames) {
3292             int j;
3293             for (j = 0; j < of->ctx->nb_streams; j++)
3294                 close_output_stream(output_streams[of->ost_index + j]);
3295             continue;
3296         }
3297
3298         return 1;
3299     }
3300
3301     return 0;
3302 }
3303
3304 /**
3305  * Select the output stream to process.
3306  *
3307  * @return  selected output stream, or NULL if none available
3308  */
3309 static OutputStream *choose_output(void)
3310 {
3311     int i;
3312     int64_t opts_min = INT64_MAX;
3313     OutputStream *ost_min = NULL;
3314
3315     for (i = 0; i < nb_output_streams; i++) {
3316         OutputStream *ost = output_streams[i];
3317         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
3318                                     AV_TIME_BASE_Q);
3319         if (!ost->finished && opts < opts_min) {
3320             opts_min = opts;
3321             ost_min  = ost->unavailable ? NULL : ost;
3322         }
3323     }
3324     return ost_min;
3325 }
3326
3327 static int check_keyboard_interaction(int64_t cur_time)
3328 {
3329     int i, ret, key;
3330     static int64_t last_time;
3331     if (received_nb_signals)
3332         return AVERROR_EXIT;
3333     /* read_key() returns 0 on EOF */
3334     if(cur_time - last_time >= 100000 && !run_as_daemon){
3335         key =  read_key();
3336         last_time = cur_time;
3337     }else
3338         key = -1;
3339     if (key == 'q')
3340         return AVERROR_EXIT;
3341     if (key == '+') av_log_set_level(av_log_get_level()+10);
3342     if (key == '-') av_log_set_level(av_log_get_level()-10);
3343     if (key == 's') qp_hist     ^= 1;
3344     if (key == 'h'){
3345         if (do_hex_dump){
3346             do_hex_dump = do_pkt_dump = 0;
3347         } else if(do_pkt_dump){
3348             do_hex_dump = 1;
3349         } else
3350             do_pkt_dump = 1;
3351         av_log_set_level(AV_LOG_DEBUG);
3352     }
3353     if (key == 'c' || key == 'C'){
3354         char buf[4096], target[64], command[256], arg[256] = {0};
3355         double time;
3356         int k, n = 0;
3357         fprintf(stderr, "\nEnter command: <target>|all <time>|-1 <command>[ <argument>]\n");
3358         i = 0;
3359         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
3360             if (k > 0)
3361                 buf[i++] = k;
3362         buf[i] = 0;
3363         if (k > 0 &&
3364             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
3365             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
3366                    target, time, command, arg);
3367             for (i = 0; i < nb_filtergraphs; i++) {
3368                 FilterGraph *fg = filtergraphs[i];
3369                 if (fg->graph) {
3370                     if (time < 0) {
3371                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
3372                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
3373                         fprintf(stderr, "Command reply for stream %d: ret:%d res:\n%s", i, ret, buf);
3374                     } else if (key == 'c') {
3375                         fprintf(stderr, "Queing commands only on filters supporting the specific command is unsupported\n");
3376                         ret = AVERROR_PATCHWELCOME;
3377                     } else {
3378                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
3379                         if (ret < 0)
3380                             fprintf(stderr, "Queing command failed with error %s\n", av_err2str(ret));
3381                     }
3382                 }
3383             }
3384         } else {
3385             av_log(NULL, AV_LOG_ERROR,
3386                    "Parse error, at least 3 arguments were expected, "
3387                    "only %d given in string '%s'\n", n, buf);
3388         }
3389     }
3390     if (key == 'd' || key == 'D'){
3391         int debug=0;
3392         if(key == 'D') {
3393             debug = input_streams[0]->st->codec->debug<<1;
3394             if(!debug) debug = 1;
3395             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
3396                 debug += debug;
3397         }else
3398             if(scanf("%d", &debug)!=1)
3399                 fprintf(stderr,"error parsing debug value\n");
3400         for(i=0;i<nb_input_streams;i++) {
3401             input_streams[i]->st->codec->debug = debug;
3402         }
3403         for(i=0;i<nb_output_streams;i++) {
3404             OutputStream *ost = output_streams[i];
3405             ost->enc_ctx->debug = debug;
3406         }
3407         if(debug) av_log_set_level(AV_LOG_DEBUG);
3408         fprintf(stderr,"debug=%d\n", debug);
3409     }
3410     if (key == '?'){
3411         fprintf(stderr, "key    function\n"
3412                         "?      show this help\n"
3413                         "+      increase verbosity\n"
3414                         "-      decrease verbosity\n"
3415                         "c      Send command to first matching filter supporting it\n"
3416                         "C      Send/Que command to all matching filters\n"
3417                         "D      cycle through available debug modes\n"
3418                         "h      dump packets/hex press to cycle through the 3 states\n"
3419                         "q      quit\n"
3420                         "s      Show QP histogram\n"
3421         );
3422     }
3423     return 0;
3424 }
3425
3426 #if HAVE_PTHREADS
3427 static void *input_thread(void *arg)
3428 {
3429     InputFile *f = arg;
3430     unsigned flags = f->non_blocking ? AV_THREAD_MESSAGE_NONBLOCK : 0;
3431     int ret = 0;
3432
3433     while (1) {
3434         AVPacket pkt;
3435         ret = av_read_frame(f->ctx, &pkt);
3436
3437         if (ret == AVERROR(EAGAIN)) {
3438             av_usleep(10000);
3439             continue;
3440         }
3441         if (ret < 0) {
3442             av_thread_message_queue_set_err_recv(f->in_thread_queue, ret);
3443             break;
3444         }
3445         av_dup_packet(&pkt);
3446         ret = av_thread_message_queue_send(f->in_thread_queue, &pkt, flags);
3447         if (flags && ret == AVERROR(EAGAIN)) {
3448             flags = 0;
3449             ret = av_thread_message_queue_send(f->in_thread_queue, &pkt, flags);
3450             av_log(f->ctx, AV_LOG_WARNING,
3451                    "Thread message queue blocking; consider raising the "
3452                    "thread_queue_size option (current value: %d)\n",
3453                    f->thread_queue_size);
3454         }
3455         if (ret < 0) {
3456             if (ret != AVERROR_EOF)
3457                 av_log(f->ctx, AV_LOG_ERROR,
3458                        "Unable to send packet to main thread: %s\n",
3459                        av_err2str(ret));
3460             av_free_packet(&pkt);
3461             av_thread_message_queue_set_err_recv(f->in_thread_queue, ret);
3462             break;
3463         }
3464     }
3465
3466     return NULL;
3467 }
3468
3469 static void free_input_threads(void)
3470 {
3471     int i;
3472
3473     for (i = 0; i < nb_input_files; i++) {
3474         InputFile *f = input_files[i];
3475         AVPacket pkt;
3476
3477         if (!f->in_thread_queue)
3478             continue;
3479         av_thread_message_queue_set_err_send(f->in_thread_queue, AVERROR_EOF);
3480         while (av_thread_message_queue_recv(f->in_thread_queue, &pkt, 0) >= 0)
3481             av_free_packet(&pkt);
3482
3483         pthread_join(f->thread, NULL);
3484         f->joined = 1;
3485         av_thread_message_queue_free(&f->in_thread_queue);
3486     }
3487 }
3488
3489 static int init_input_threads(void)
3490 {
3491     int i, ret;
3492
3493     if (nb_input_files == 1)
3494         return 0;
3495
3496     for (i = 0; i < nb_input_files; i++) {
3497         InputFile *f = input_files[i];
3498
3499         if (f->ctx->pb ? !f->ctx->pb->seekable :
3500             strcmp(f->ctx->iformat->name, "lavfi"))
3501             f->non_blocking = 1;
3502         ret = av_thread_message_queue_alloc(&f->in_thread_queue,
3503                                             f->thread_queue_size, sizeof(AVPacket));
3504         if (ret < 0)
3505             return ret;
3506
3507         if ((ret = pthread_create(&f->thread, NULL, input_thread, f))) {
3508             av_log(NULL, AV_LOG_ERROR, "pthread_create failed: %s. Try to increase `ulimit -v` or decrease `ulimit -s`.\n", strerror(ret));
3509             av_thread_message_queue_free(&f->in_thread_queue);
3510             return AVERROR(ret);
3511         }
3512     }
3513     return 0;
3514 }
3515
3516 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
3517 {
3518     return av_thread_message_queue_recv(f->in_thread_queue, pkt,
3519                                         f->non_blocking ?
3520                                         AV_THREAD_MESSAGE_NONBLOCK : 0);
3521 }
3522 #endif
3523
3524 static int get_input_packet(InputFile *f, AVPacket *pkt)
3525 {
3526     if (f->rate_emu) {
3527         int i;
3528         for (i = 0; i < f->nb_streams; i++) {
3529             InputStream *ist = input_streams[f->ist_index + i];
3530             int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
3531             int64_t now = av_gettime_relative() - ist->start;
3532             if (pts > now)
3533                 return AVERROR(EAGAIN);
3534         }
3535     }
3536
3537 #if HAVE_PTHREADS
3538     if (nb_input_files > 1)
3539         return get_input_packet_mt(f, pkt);
3540 #endif
3541     return av_read_frame(f->ctx, pkt);
3542 }
3543
3544 static int got_eagain(void)
3545 {
3546     int i;
3547     for (i = 0; i < nb_output_streams; i++)
3548         if (output_streams[i]->unavailable)
3549             return 1;
3550     return 0;
3551 }
3552
3553 static void reset_eagain(void)
3554 {
3555     int i;
3556     for (i = 0; i < nb_input_files; i++)
3557         input_files[i]->eagain = 0;
3558     for (i = 0; i < nb_output_streams; i++)
3559         output_streams[i]->unavailable = 0;
3560 }
3561
3562 /*
3563  * Return
3564  * - 0 -- one packet was read and processed
3565  * - AVERROR(EAGAIN) -- no packets were available for selected file,
3566  *   this function should be called again
3567  * - AVERROR_EOF -- this function should not be called again
3568  */
3569 static int process_input(int file_index)
3570 {
3571     InputFile *ifile = input_files[file_index];
3572     AVFormatContext *is;
3573     InputStream *ist;
3574     AVPacket pkt;
3575     int ret, i, j;
3576
3577     is  = ifile->ctx;
3578     ret = get_input_packet(ifile, &pkt);
3579
3580     if (ret == AVERROR(EAGAIN)) {
3581         ifile->eagain = 1;
3582         return ret;
3583     }
3584     if (ret < 0) {
3585         if (ret != AVERROR_EOF) {
3586             print_error(is->filename, ret);
3587             if (exit_on_error)
3588                 exit_program(1);
3589         }
3590
3591         for (i = 0; i < ifile->nb_streams; i++) {
3592             ist = input_streams[ifile->ist_index + i];
3593             if (ist->decoding_needed) {
3594                 ret = process_input_packet(ist, NULL);
3595                 if (ret>0)
3596                     return 0;
3597             }
3598
3599             /* mark all outputs that don't go through lavfi as finished */
3600             for (j = 0; j < nb_output_streams; j++) {
3601                 OutputStream *ost = output_streams[j];