git.sesse.net Git - ffmpeg/blob - ffmpeg.c

   1 /*
   2  * Copyright (c) 2000-2003 Fabrice Bellard
   3  *
   4  * This file is part of FFmpeg.
   5  *
   6  * FFmpeg is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * FFmpeg is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with FFmpeg; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 /**
  22  * @file
  23  * multimedia converter based on the FFmpeg libraries
  24  */
  25
  26 #include "config.h"
  27 #include <ctype.h>
  28 #include <string.h>
  29 #include <math.h>
  30 #include <stdlib.h>
  31 #include <errno.h>
  32 #include <limits.h>
  33 #if HAVE_ISATTY
  34 #if HAVE_IO_H
  35 #include <io.h>
  36 #endif
  37 #if HAVE_UNISTD_H
  38 #include <unistd.h>
  39 #endif
  40 #endif
  41 #include "libavformat/avformat.h"
  42 #include "libavdevice/avdevice.h"
  43 #include "libswresample/swresample.h"
  44 #include "libavutil/opt.h"
  45 #include "libavutil/channel_layout.h"
  46 #include "libavutil/parseutils.h"
  47 #include "libavutil/samplefmt.h"
  48 #include "libavutil/fifo.h"
  49 #include "libavutil/intreadwrite.h"
  50 #include "libavutil/dict.h"
  51 #include "libavutil/mathematics.h"
  52 #include "libavutil/pixdesc.h"
  53 #include "libavutil/avstring.h"
  54 #include "libavutil/libm.h"
  55 #include "libavutil/imgutils.h"
  56 #include "libavutil/timestamp.h"
  57 #include "libavutil/bprint.h"
  58 #include "libavutil/time.h"
  59 #include "libavformat/os_support.h"
  60
  61 #include "libavformat/ffm.h" // not public API
  62
  63 # include "libavfilter/avcodec.h"
  64 # include "libavfilter/avfilter.h"
  65 # include "libavfilter/buffersrc.h"
  66 # include "libavfilter/buffersink.h"
  67
  68 #if HAVE_SYS_RESOURCE_H
  69 #include <sys/time.h>
  70 #include <sys/types.h>
  71 #include <sys/resource.h>
  72 #elif HAVE_GETPROCESSTIMES
  73 #include <windows.h>
  74 #endif
  75 #if HAVE_GETPROCESSMEMORYINFO
  76 #include <windows.h>
  77 #include <psapi.h>
  78 #endif
  79
  80 #if HAVE_SYS_SELECT_H
  81 #include <sys/select.h>
  82 #endif
  83
  84 #if HAVE_TERMIOS_H
  85 #include <fcntl.h>
  86 #include <sys/ioctl.h>
  87 #include <sys/time.h>
  88 #include <termios.h>
  89 #elif HAVE_KBHIT
  90 #include <conio.h>
  91 #endif
  92
  93 #if HAVE_PTHREADS
  94 #include <pthread.h>
  95 #endif
  96
  97 #include <time.h>
  98
  99 #include "ffmpeg.h"
 100 #include "cmdutils.h"
 101
 102 #include "libavutil/avassert.h"
 103
 104 const char program_name[] = "ffmpeg";
 105 const int program_birth_year = 2000;
 106
 107 static FILE *vstats_file;
 108
 109 const char *const forced_keyframes_const_names[] = {
 110     "n",
 111     "n_forced",
 112     "prev_forced_n",
 113     "prev_forced_t",
 114     "t",
 115     NULL
 116 };
 117
 118 static void do_video_stats(OutputStream *ost, int frame_size);
 119 static int64_t getutime(void);
 120 static int64_t getmaxrss(void);
 121
 122 static int run_as_daemon  = 0;
 123 static int64_t video_size = 0;
 124 static int64_t audio_size = 0;
 125 static int64_t subtitle_size = 0;
 126 static int64_t extra_size = 0;
 127 static int nb_frames_dup = 0;
 128 static int nb_frames_drop = 0;
 129 static int64_t decode_error_stat[2];
 130
 131 static int current_time;
 132 AVIOContext *progress_avio = NULL;
 133
 134 static uint8_t *subtitle_out;
 135
 136 #if HAVE_PTHREADS
 137 /* signal to input threads that they should exit; set by the main thread */
 138 static int transcoding_finished;
 139 #endif
 140
 141 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
 142
 143 InputStream **input_streams = NULL;
 144 int        nb_input_streams = 0;
 145 InputFile   **input_files   = NULL;
 146 int        nb_input_files   = 0;
 147
 148 OutputStream **output_streams = NULL;
 149 int         nb_output_streams = 0;
 150 OutputFile   **output_files   = NULL;
 151 int         nb_output_files   = 0;
 152
 153 FilterGraph **filtergraphs;
 154 int        nb_filtergraphs;
 155
 156 #if HAVE_TERMIOS_H
 157
 158 /* init terminal so that we can grab keys */
 159 static struct termios oldtty;
 160 static int restore_tty;
 161 #endif
 162
 163 static void free_input_threads(void);
 164
 165
 166 /* sub2video hack:
 167    Convert subtitles to video with alpha to insert them in filter graphs.
 168    This is a temporary solution until libavfilter gets real subtitles support.
 169  */
 170
 171 static int sub2video_get_blank_frame(InputStream *ist)
 172 {
 173     int ret;
 174     AVFrame *frame = ist->sub2video.frame;
 175
 176     av_frame_unref(frame);
 177     ist->sub2video.frame->width  = ist->sub2video.w;
 178     ist->sub2video.frame->height = ist->sub2video.h;
 179     ist->sub2video.frame->format = AV_PIX_FMT_RGB32;
 180     if ((ret = av_frame_get_buffer(frame, 32)) < 0)
 181         return ret;
 182     memset(frame->data[0], 0, frame->height * frame->linesize[0]);
 183     return 0;
 184 }
 185
 186 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
 187                                 AVSubtitleRect *r)
 188 {
 189     uint32_t *pal, *dst2;
 190     uint8_t *src, *src2;
 191     int x, y;
 192
 193     if (r->type != SUBTITLE_BITMAP) {
 194         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
 195         return;
 196     }
 197     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
 198         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
 199         return;
 200     }
 201
 202     dst += r->y * dst_linesize + r->x * 4;
 203     src = r->pict.data[0];
 204     pal = (uint32_t *)r->pict.data[1];
 205     for (y = 0; y < r->h; y++) {
 206         dst2 = (uint32_t *)dst;
 207         src2 = src;
 208         for (x = 0; x < r->w; x++)
 209             *(dst2++) = pal[*(src2++)];
 210         dst += dst_linesize;
 211         src += r->pict.linesize[0];
 212     }
 213 }
 214
 215 static void sub2video_push_ref(InputStream *ist, int64_t pts)
 216 {
 217     AVFrame *frame = ist->sub2video.frame;
 218     int i;
 219
 220     av_assert1(frame->data[0]);
 221     ist->sub2video.last_pts = frame->pts = pts;
 222     for (i = 0; i < ist->nb_filters; i++)
 223         av_buffersrc_add_frame_flags(ist->filters[i]->filter, frame,
 224                                      AV_BUFFERSRC_FLAG_KEEP_REF |
 225                                      AV_BUFFERSRC_FLAG_PUSH);
 226 }
 227
 228 static void sub2video_update(InputStream *ist, AVSubtitle *sub)
 229 {
 230     int w = ist->sub2video.w, h = ist->sub2video.h;
 231     AVFrame *frame = ist->sub2video.frame;
 232     int8_t *dst;
 233     int     dst_linesize;
 234     int num_rects, i;
 235     int64_t pts, end_pts;
 236
 237     if (!frame)
 238         return;
 239     if (sub) {
 240         pts       = av_rescale_q(sub->pts + sub->start_display_time * 1000,
 241                                  AV_TIME_BASE_Q, ist->st->time_base);
 242         end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000,
 243                                  AV_TIME_BASE_Q, ist->st->time_base);
 244         num_rects = sub->num_rects;
 245     } else {
 246         pts       = ist->sub2video.end_pts;
 247         end_pts   = INT64_MAX;
 248         num_rects = 0;
 249     }
 250     if (sub2video_get_blank_frame(ist) < 0) {
 251         av_log(ist->st->codec, AV_LOG_ERROR,
 252                "Impossible to get a blank canvas.\n");
 253         return;
 254     }
 255     dst          = frame->data    [0];
 256     dst_linesize = frame->linesize[0];
 257     for (i = 0; i < num_rects; i++)
 258         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
 259     sub2video_push_ref(ist, pts);
 260     ist->sub2video.end_pts = end_pts;
 261 }
 262
 263 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
 264 {
 265     InputFile *infile = input_files[ist->file_index];
 266     int i, j, nb_reqs;
 267     int64_t pts2;
 268
 269     /* When a frame is read from a file, examine all sub2video streams in
 270        the same file and send the sub2video frame again. Otherwise, decoded
 271        video frames could be accumulating in the filter graph while a filter
 272        (possibly overlay) is desperately waiting for a subtitle frame. */
 273     for (i = 0; i < infile->nb_streams; i++) {
 274         InputStream *ist2 = input_streams[infile->ist_index + i];
 275         if (!ist2->sub2video.frame)
 276             continue;
 277         /* subtitles seem to be usually muxed ahead of other streams;
 278            if not, substracting a larger time here is necessary */
 279         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
 280         /* do not send the heartbeat frame if the subtitle is already ahead */
 281         if (pts2 <= ist2->sub2video.last_pts)
 282             continue;
 283         if (pts2 >= ist2->sub2video.end_pts || !ist2->sub2video.frame->data[0])
 284             sub2video_update(ist2, NULL);
 285         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
 286             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
 287         if (nb_reqs)
 288             sub2video_push_ref(ist2, pts2);
 289     }
 290 }
 291
 292 static void sub2video_flush(InputStream *ist)
 293 {
 294     int i;
 295
 296     for (i = 0; i < ist->nb_filters; i++)
 297         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
 298 }
 299
 300 /* end of sub2video hack */
 301
 302 void term_exit(void)
 303 {
 304     av_log(NULL, AV_LOG_QUIET, "%s", "");
 305 #if HAVE_TERMIOS_H
 306     if(restore_tty)
 307         tcsetattr (0, TCSANOW, &oldtty);
 308 #endif
 309 }
 310
 311 static volatile int received_sigterm = 0;
 312 static volatile int received_nb_signals = 0;
 313
 314 static void
 315 sigterm_handler(int sig)
 316 {
 317     received_sigterm = sig;
 318     received_nb_signals++;
 319     term_exit();
 320     if(received_nb_signals > 3)
 321         exit_program(123);
 322 }
 323
 324 void term_init(void)
 325 {
 326 #if HAVE_TERMIOS_H
 327     if(!run_as_daemon){
 328         struct termios tty;
 329         int istty = 1;
 330 #if HAVE_ISATTY
 331         istty = isatty(0) && isatty(2);
 332 #endif
 333         if (istty && tcgetattr (0, &tty) == 0) {
 334             oldtty = tty;
 335             restore_tty = 1;
 336
 337             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
 338                              |INLCR|IGNCR|ICRNL|IXON);
 339             tty.c_oflag |= OPOST;
 340             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
 341             tty.c_cflag &= ~(CSIZE|PARENB);
 342             tty.c_cflag |= CS8;
 343             tty.c_cc[VMIN] = 1;
 344             tty.c_cc[VTIME] = 0;
 345
 346             tcsetattr (0, TCSANOW, &tty);
 347         }
 348         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
 349     }
 350 #endif
 351     avformat_network_deinit();
 352
 353     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
 354     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
 355 #ifdef SIGXCPU
 356     signal(SIGXCPU, sigterm_handler);
 357 #endif
 358 }
 359
 360 /* read a key without blocking */
 361 static int read_key(void)
 362 {
 363     unsigned char ch;
 364 #if HAVE_TERMIOS_H
 365     int n = 1;
 366     struct timeval tv;
 367     fd_set rfds;
 368
 369     FD_ZERO(&rfds);
 370     FD_SET(0, &rfds);
 371     tv.tv_sec = 0;
 372     tv.tv_usec = 0;
 373     n = select(1, &rfds, NULL, NULL, &tv);
 374     if (n > 0) {
 375         n = read(0, &ch, 1);
 376         if (n == 1)
 377             return ch;
 378
 379         return n;
 380     }
 381 #elif HAVE_KBHIT
 382 #    if HAVE_PEEKNAMEDPIPE
 383     static int is_pipe;
 384     static HANDLE input_handle;
 385     DWORD dw, nchars;
 386     if(!input_handle){
 387         input_handle = GetStdHandle(STD_INPUT_HANDLE);
 388         is_pipe = !GetConsoleMode(input_handle, &dw);
 389     }
 390
 391     if (stdin->_cnt > 0) {
 392         read(0, &ch, 1);
 393         return ch;
 394     }
 395     if (is_pipe) {
 396         /* When running under a GUI, you will end here. */
 397         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
 398             // input pipe may have been closed by the program that ran ffmpeg
 399             return -1;
 400         }
 401         //Read it
 402         if(nchars != 0) {
 403             read(0, &ch, 1);
 404             return ch;
 405         }else{
 406             return -1;
 407         }
 408     }
 409 #    endif
 410     if(kbhit())
 411         return(getch());
 412 #endif
 413     return -1;
 414 }
 415
 416 static int decode_interrupt_cb(void *ctx)
 417 {
 418     return received_nb_signals > 1;
 419 }
 420
 421 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
 422
 423 static void ffmpeg_cleanup(int ret)
 424 {
 425     int i, j;
 426
 427     if (do_benchmark) {
 428         int maxrss = getmaxrss() / 1024;
 429         printf("bench: maxrss=%ikB\n", maxrss);
 430     }
 431
 432     for (i = 0; i < nb_filtergraphs; i++) {
 433         avfilter_graph_free(&filtergraphs[i]->graph);
 434         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
 435             av_freep(&filtergraphs[i]->inputs[j]->name);
 436             av_freep(&filtergraphs[i]->inputs[j]);
 437         }
 438         av_freep(&filtergraphs[i]->inputs);
 439         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
 440             av_freep(&filtergraphs[i]->outputs[j]->name);
 441             av_freep(&filtergraphs[i]->outputs[j]);
 442         }
 443         av_freep(&filtergraphs[i]->outputs);
 444         av_freep(&filtergraphs[i]->graph_desc);
 445         av_freep(&filtergraphs[i]);
 446     }
 447     av_freep(&filtergraphs);
 448
 449     av_freep(&subtitle_out);
 450
 451     /* close files */
 452     for (i = 0; i < nb_output_files; i++) {
 453         AVFormatContext *s = output_files[i]->ctx;
 454         if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE) && s->pb)
 455             avio_close(s->pb);
 456         avformat_free_context(s);
 457         av_dict_free(&output_files[i]->opts);
 458         av_freep(&output_files[i]);
 459     }
 460     for (i = 0; i < nb_output_streams; i++) {
 461         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
 462         while (bsfc) {
 463             AVBitStreamFilterContext *next = bsfc->next;
 464             av_bitstream_filter_close(bsfc);
 465             bsfc = next;
 466         }
 467         output_streams[i]->bitstream_filters = NULL;
 468         avcodec_free_frame(&output_streams[i]->filtered_frame);
 469
 470         av_parser_close(output_streams[i]->parser);
 471
 472         av_freep(&output_streams[i]->forced_keyframes);
 473         av_expr_free(output_streams[i]->forced_keyframes_pexpr);
 474         av_freep(&output_streams[i]->avfilter);
 475         av_freep(&output_streams[i]->logfile_prefix);
 476         av_freep(&output_streams[i]);
 477     }
 478 #if HAVE_PTHREADS
 479     free_input_threads();
 480 #endif
 481     for (i = 0; i < nb_input_files; i++) {
 482         avformat_close_input(&input_files[i]->ctx);
 483         av_freep(&input_files[i]);
 484     }
 485     for (i = 0; i < nb_input_streams; i++) {
 486         av_frame_free(&input_streams[i]->decoded_frame);
 487         av_frame_free(&input_streams[i]->filter_frame);
 488         av_dict_free(&input_streams[i]->opts);
 489         avsubtitle_free(&input_streams[i]->prev_sub.subtitle);
 490         av_frame_free(&input_streams[i]->sub2video.frame);
 491         av_freep(&input_streams[i]->filters);
 492         av_freep(&input_streams[i]);
 493     }
 494
 495     if (vstats_file)
 496         fclose(vstats_file);
 497     av_free(vstats_filename);
 498
 499     av_freep(&input_streams);
 500     av_freep(&input_files);
 501     av_freep(&output_streams);
 502     av_freep(&output_files);
 503
 504     uninit_opts();
 505
 506     avformat_network_deinit();
 507
 508     if (received_sigterm) {
 509         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
 510                (int) received_sigterm);
 511     }
 512     term_exit();
 513 }
 514
 515 void assert_avoptions(AVDictionary *m)
 516 {
 517     AVDictionaryEntry *t;
 518     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
 519         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
 520         exit_program(1);
 521     }
 522 }
 523
 524 static void abort_codec_experimental(AVCodec *c, int encoder)
 525 {
 526     exit_program(1);
 527 }
 528
 529 static void update_benchmark(const char *fmt, ...)
 530 {
 531     if (do_benchmark_all) {
 532         int64_t t = getutime();
 533         va_list va;
 534         char buf[1024];
 535
 536         if (fmt) {
 537             va_start(va, fmt);
 538             vsnprintf(buf, sizeof(buf), fmt, va);
 539             va_end(va);
 540             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
 541         }
 542         current_time = t;
 543     }
 544 }
 545
 546 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
 547 {
 548     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
 549     AVCodecContext          *avctx = ost->st->codec;
 550     int ret;
 551
 552     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
 553         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
 554         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
 555
 556     /*
 557      * Audio encoders may split the packets --  #frames in != #packets out.
 558      * But there is no reordering, so we can limit the number of output packets
 559      * by simply dropping them here.
 560      * Counting encoded video frames needs to be done separately because of
 561      * reordering, see do_video_out()
 562      */
 563     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
 564         if (ost->frame_number >= ost->max_frames) {
 565             av_free_packet(pkt);
 566             return;
 567         }
 568         ost->frame_number++;
 569     }
 570
 571     while (bsfc) {
 572         AVPacket new_pkt = *pkt;
 573         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
 574                                            &new_pkt.data, &new_pkt.size,
 575                                            pkt->data, pkt->size,
 576                                            pkt->flags & AV_PKT_FLAG_KEY);
 577         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
 578             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
 579             if(t) {
 580                 memcpy(t, new_pkt.data, new_pkt.size);
 581                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
 582                 new_pkt.data = t;
 583                 new_pkt.buf = NULL;
 584                 a = 1;
 585             } else
 586                 a = AVERROR(ENOMEM);
 587         }
 588         if (a > 0) {
 589             av_free_packet(pkt);
 590             new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
 591                                            av_buffer_default_free, NULL, 0);
 592             if (!new_pkt.buf)
 593                 exit_program(1);
 594         } else if (a < 0) {
 595             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
 596                    bsfc->filter->name, pkt->stream_index,
 597                    avctx->codec ? avctx->codec->name : "copy");
 598             print_error("", a);
 599             if (exit_on_error)
 600                 exit_program(1);
 601         }
 602         *pkt = new_pkt;
 603
 604         bsfc = bsfc->next;
 605     }
 606
 607     if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS) &&
 608         (avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) &&
 609         pkt->dts != AV_NOPTS_VALUE &&
 610         ost->last_mux_dts != AV_NOPTS_VALUE) {
 611       int64_t max = ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
 612       if (pkt->dts < max) {
 613         int loglevel = max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG;
 614         av_log(s, loglevel, "Non-monotonous DTS in output stream "
 615                "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
 616                ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
 617         if (exit_on_error) {
 618             av_log(NULL, AV_LOG_FATAL, "aborting.\n");
 619             exit_program(1);
 620         }
 621         av_log(s, loglevel, "changing to %"PRId64". This may result "
 622                "in incorrect timestamps in the output file.\n",
 623                max);
 624         if(pkt->pts >= pkt->dts)
 625             pkt->pts = FFMAX(pkt->pts, max);
 626         pkt->dts = max;
 627       }
 628     }
 629     ost->last_mux_dts = pkt->dts;
 630
 631     pkt->stream_index = ost->index;
 632
 633     if (debug_ts) {
 634         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
 635                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
 636                 av_get_media_type_string(ost->st->codec->codec_type),
 637                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
 638                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
 639                 pkt->size
 640               );
 641     }
 642
 643     ret = av_interleaved_write_frame(s, pkt);
 644     if (ret < 0) {
 645         print_error("av_interleaved_write_frame()", ret);
 646         exit_program(1);
 647     }
 648 }
 649
 650 static void close_output_stream(OutputStream *ost)
 651 {
 652     OutputFile *of = output_files[ost->file_index];
 653
 654     ost->finished = 1;
 655     if (of->shortest) {
 656         int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, AV_TIME_BASE_Q);
 657         of->recording_time = FFMIN(of->recording_time, end);
 658     }
 659 }
 660
 661 static int check_recording_time(OutputStream *ost)
 662 {
 663     OutputFile *of = output_files[ost->file_index];
 664
 665     if (of->recording_time != INT64_MAX &&
 666         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
 667                       AV_TIME_BASE_Q) >= 0) {
 668         close_output_stream(ost);
 669         return 0;
 670     }
 671     return 1;
 672 }
 673
 674 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
 675                          AVFrame *frame)
 676 {
 677     AVCodecContext *enc = ost->st->codec;
 678     AVPacket pkt;
 679     int got_packet = 0;
 680
 681     av_init_packet(&pkt);
 682     pkt.data = NULL;
 683     pkt.size = 0;
 684
 685     if (!check_recording_time(ost))
 686         return;
 687
 688     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
 689         frame->pts = ost->sync_opts;
 690     ost->sync_opts = frame->pts + frame->nb_samples;
 691
 692     av_assert0(pkt.size || !pkt.data);
 693     update_benchmark(NULL);
 694     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
 695         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
 696         exit_program(1);
 697     }
 698     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
 699
 700     if (got_packet) {
 701         if (pkt.pts != AV_NOPTS_VALUE)
 702             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
 703         if (pkt.dts != AV_NOPTS_VALUE)
 704             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
 705         if (pkt.duration > 0)
 706             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
 707
 708         if (debug_ts) {
 709             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
 710                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
 711                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
 712                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
 713         }
 714
 715         audio_size += pkt.size;
 716         write_frame(s, &pkt, ost);
 717
 718         av_free_packet(&pkt);
 719     }
 720 }
 721
 722 static void do_subtitle_out(AVFormatContext *s,
 723                             OutputStream *ost,
 724                             InputStream *ist,
 725                             AVSubtitle *sub)
 726 {
 727     int subtitle_out_max_size = 1024 * 1024;
 728     int subtitle_out_size, nb, i;
 729     AVCodecContext *enc;
 730     AVPacket pkt;
 731     int64_t pts;
 732
 733     if (sub->pts == AV_NOPTS_VALUE) {
 734         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
 735         if (exit_on_error)
 736             exit_program(1);
 737         return;
 738     }
 739
 740     enc = ost->st->codec;
 741
 742     if (!subtitle_out) {
 743         subtitle_out = av_malloc(subtitle_out_max_size);
 744     }
 745
 746     /* Note: DVB subtitle need one packet to draw them and one other
 747        packet to clear them */
 748     /* XXX: signal it in the codec context ? */
 749     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
 750         nb = 2;
 751     else
 752         nb = 1;
 753
 754     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
 755     pts = sub->pts;
 756     if (output_files[ost->file_index]->start_time != AV_NOPTS_VALUE)
 757         pts -= output_files[ost->file_index]->start_time;
 758     for (i = 0; i < nb; i++) {
 759         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
 760         if (!check_recording_time(ost))
 761             return;
 762
 763         sub->pts = pts;
 764         // start_display_time is required to be 0
 765         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
 766         sub->end_display_time  -= sub->start_display_time;
 767         sub->start_display_time = 0;
 768         if (i == 1)
 769             sub->num_rects = 0;
 770         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
 771                                                     subtitle_out_max_size, sub);
 772         if (subtitle_out_size < 0) {
 773             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
 774             exit_program(1);
 775         }
 776
 777         av_init_packet(&pkt);
 778         pkt.data = subtitle_out;
 779         pkt.size = subtitle_out_size;
 780         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
 781         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
 782         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
 783             /* XXX: the pts correction is handled here. Maybe handling
 784                it in the codec would be better */
 785             if (i == 0)
 786                 pkt.pts += 90 * sub->start_display_time;
 787             else
 788                 pkt.pts += 90 * sub->end_display_time;
 789         }
 790         subtitle_size += pkt.size;
 791         write_frame(s, &pkt, ost);
 792     }
 793 }
 794
 795 static void do_video_out(AVFormatContext *s,
 796                          OutputStream *ost,
 797                          AVFrame *in_picture)
 798 {
 799     int ret, format_video_sync;
 800     AVPacket pkt;
 801     AVCodecContext *enc = ost->st->codec;
 802     int nb_frames, i;
 803     double sync_ipts, delta;
 804     double duration = 0;
 805     int frame_size = 0;
 806     InputStream *ist = NULL;
 807
 808     if (ost->source_index >= 0)
 809         ist = input_streams[ost->source_index];
 810
 811     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
 812         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
 813
 814     sync_ipts = in_picture->pts;
 815     delta = sync_ipts - ost->sync_opts + duration;
 816
 817     /* by default, we output a single frame */
 818     nb_frames = 1;
 819
 820     format_video_sync = video_sync_method;
 821     if (format_video_sync == VSYNC_AUTO) {
 822         if(!strcmp(s->oformat->name, "avi")) {
 823             format_video_sync = VSYNC_VFR;
 824         } else
 825             format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
 826     }
 827
 828     switch (format_video_sync) {
 829     case VSYNC_CFR:
 830         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
 831         if (delta < -1.1)
 832             nb_frames = 0;
 833         else if (delta > 1.1)
 834             nb_frames = lrintf(delta);
 835         break;
 836     case VSYNC_VFR:
 837         if (delta <= -0.6)
 838             nb_frames = 0;
 839         else if (delta > 0.6)
 840             ost->sync_opts = lrint(sync_ipts);
 841         break;
 842     case VSYNC_DROP:
 843     case VSYNC_PASSTHROUGH:
 844         ost->sync_opts = lrint(sync_ipts);
 845         break;
 846     default:
 847         av_assert0(0);
 848     }
 849
 850     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
 851     if (nb_frames == 0) {
 852         nb_frames_drop++;
 853         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
 854         return;
 855     } else if (nb_frames > 1) {
 856         if (nb_frames > dts_error_threshold * 30) {
 857             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
 858             nb_frames_drop++;
 859             return;
 860         }
 861         nb_frames_dup += nb_frames - 1;
 862         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
 863     }
 864
 865   /* duplicates frame if needed */
 866   for (i = 0; i < nb_frames; i++) {
 867     av_init_packet(&pkt);
 868     pkt.data = NULL;
 869     pkt.size = 0;
 870
 871     in_picture->pts = ost->sync_opts;
 872
 873 #if 1
 874     if (!check_recording_time(ost))
 875 #else
 876     if (ost->frame_number >= ost->max_frames)
 877 #endif
 878         return;
 879
 880     if (s->oformat->flags & AVFMT_RAWPICTURE &&
 881         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
 882         /* raw pictures are written as AVPicture structure to
 883            avoid any copies. We support temporarily the older
 884            method. */
 885         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
 886         enc->coded_frame->top_field_first  = in_picture->top_field_first;
 887         if (enc->coded_frame->interlaced_frame)
 888             enc->field_order = enc->coded_frame->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
 889         else
 890             enc->field_order = AV_FIELD_PROGRESSIVE;
 891         pkt.data   = (uint8_t *)in_picture;
 892         pkt.size   =  sizeof(AVPicture);
 893         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
 894         pkt.flags |= AV_PKT_FLAG_KEY;
 895
 896         video_size += pkt.size;
 897         write_frame(s, &pkt, ost);
 898     } else {
 899         int got_packet, forced_keyframe = 0;
 900         double pts_time;
 901
 902         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME) &&
 903             ost->top_field_first >= 0)
 904             in_picture->top_field_first = !!ost->top_field_first;
 905
 906         if (in_picture->interlaced_frame) {
 907             if (enc->codec->id == AV_CODEC_ID_MJPEG)
 908                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
 909             else
 910                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
 911         } else
 912             enc->field_order = AV_FIELD_PROGRESSIVE;
 913
 914         in_picture->quality = ost->st->codec->global_quality;
 915         if (!enc->me_threshold)
 916             in_picture->pict_type = 0;
 917
 918         pts_time = in_picture->pts != AV_NOPTS_VALUE ?
 919             in_picture->pts * av_q2d(enc->time_base) : NAN;
 920         if (ost->forced_kf_index < ost->forced_kf_count &&
 921             in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
 922             ost->forced_kf_index++;
 923             forced_keyframe = 1;
 924         } else if (ost->forced_keyframes_pexpr) {
 925             double res;
 926             ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
 927             res = av_expr_eval(ost->forced_keyframes_pexpr,
 928                                ost->forced_keyframes_expr_const_values, NULL);
 929             av_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
 930                     ost->forced_keyframes_expr_const_values[FKF_N],
 931                     ost->forced_keyframes_expr_const_values[FKF_N_FORCED],
 932                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N],
 933                     ost->forced_keyframes_expr_const_values[FKF_T],
 934                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T],
 935                     res);
 936             if (res) {
 937                 forced_keyframe = 1;
 938                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] =
 939                     ost->forced_keyframes_expr_const_values[FKF_N];
 940                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] =
 941                     ost->forced_keyframes_expr_const_values[FKF_T];
 942                 ost->forced_keyframes_expr_const_values[FKF_N_FORCED] += 1;
 943             }
 944
 945             ost->forced_keyframes_expr_const_values[FKF_N] += 1;
 946         }
 947         if (forced_keyframe) {
 948             in_picture->pict_type = AV_PICTURE_TYPE_I;
 949             av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
 950         }
 951
 952         update_benchmark(NULL);
 953         ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
 954         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
 955         if (ret < 0) {
 956             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
 957             exit_program(1);
 958         }
 959
 960         if (got_packet) {
 961             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
 962                 pkt.pts = ost->sync_opts;
 963
 964             if (pkt.pts != AV_NOPTS_VALUE)
 965                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
 966             if (pkt.dts != AV_NOPTS_VALUE)
 967                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
 968
 969             if (debug_ts) {
 970                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
 971                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
 972                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
 973                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
 974             }
 975
 976             frame_size = pkt.size;
 977             video_size += pkt.size;
 978             write_frame(s, &pkt, ost);
 979             av_free_packet(&pkt);
 980
 981             /* if two pass, output log */
 982             if (ost->logfile && enc->stats_out) {
 983                 fprintf(ost->logfile, "%s", enc->stats_out);
 984             }
 985         }
 986     }
 987     ost->sync_opts++;
 988     /*
 989      * For video, number of frames in == number of packets out.
 990      * But there may be reordering, so we can't throw away frames on encoder
 991      * flush, we need to limit them here, before they go into encoder.
 992      */
 993     ost->frame_number++;
 994
 995     if (vstats_filename && frame_size)
 996         do_video_stats(ost, frame_size);
 997   }
 998 }
 999
1000 static double psnr(double d)
1001 {
1002     return -10.0 * log(d) / log(10.0);
1003 }
1004
1005 static void do_video_stats(OutputStream *ost, int frame_size)
1006 {
1007     AVCodecContext *enc;
1008     int frame_number;
1009     double ti1, bitrate, avg_bitrate;
1010
1011     /* this is executed just the first time do_video_stats is called */
1012     if (!vstats_file) {
1013         vstats_file = fopen(vstats_filename, "w");
1014         if (!vstats_file) {
1015             perror("fopen");
1016             exit_program(1);
1017         }
1018     }
1019
1020     enc = ost->st->codec;
1021     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1022         frame_number = ost->st->nb_frames;
1023         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1024         if (enc->flags&CODEC_FLAG_PSNR)
1025             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1026
1027         fprintf(vstats_file,"f_size= %6d ", frame_size);
1028         /* compute pts value */
1029         ti1 = ost->st->pts.val * av_q2d(enc->time_base);
1030         if (ti1 < 0.01)
1031             ti1 = 0.01;
1032
1033         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1034         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1035         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1036                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1037         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1038     }
1039 }
1040
1041 /**
1042  * Get and encode new output from any of the filtergraphs, without causing
1043  * activity.
1044  *
1045  * @return  0 for success, <0 for severe errors
1046  */
1047 static int reap_filters(void)
1048 {
1049     AVFrame *filtered_frame = NULL;
1050     int i;
1051     int64_t frame_pts;
1052
1053     /* Reap all buffers present in the buffer sinks */
1054     for (i = 0; i < nb_output_streams; i++) {
1055         OutputStream *ost = output_streams[i];
1056         OutputFile    *of = output_files[ost->file_index];
1057         int ret = 0;
1058
1059         if (!ost->filter)
1060             continue;
1061
1062         if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1063             return AVERROR(ENOMEM);
1064         } else
1065             avcodec_get_frame_defaults(ost->filtered_frame);
1066         filtered_frame = ost->filtered_frame;
1067
1068         while (1) {
1069             ret = av_buffersink_get_frame_flags(ost->filter->filter, filtered_frame,
1070                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1071             if (ret < 0) {
1072                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1073                     av_log(NULL, AV_LOG_WARNING,
1074                            "Error in av_buffersink_get_frame_flags(): %s\n", av_err2str(ret));
1075                 }
1076                 break;
1077             }
1078             frame_pts = AV_NOPTS_VALUE;
1079             if (filtered_frame->pts != AV_NOPTS_VALUE) {
1080                 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1081                 filtered_frame->pts = frame_pts = av_rescale_q(filtered_frame->pts,
1082                                                 ost->filter->filter->inputs[0]->time_base,
1083                                                 ost->st->codec->time_base) -
1084                                     av_rescale_q(start_time,
1085                                                 AV_TIME_BASE_Q,
1086                                                 ost->st->codec->time_base);
1087             }
1088             //if (ost->source_index >= 0)
1089             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1090
1091
1092             switch (ost->filter->filter->inputs[0]->type) {
1093             case AVMEDIA_TYPE_VIDEO:
1094                 filtered_frame->pts = frame_pts;
1095                 if (!ost->frame_aspect_ratio.num)
1096                     ost->st->codec->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
1097
1098                 do_video_out(of->ctx, ost, filtered_frame);
1099                 break;
1100             case AVMEDIA_TYPE_AUDIO:
1101                 filtered_frame->pts = frame_pts;
1102                 if (!(ost->st->codec->codec->capabilities & CODEC_CAP_PARAM_CHANGE) &&
1103                     ost->st->codec->channels != av_frame_get_channels(filtered_frame)) {
1104                     av_log(NULL, AV_LOG_ERROR,
1105                            "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
1106                     break;
1107                 }
1108                 do_audio_out(of->ctx, ost, filtered_frame);
1109                 break;
1110             default:
1111                 // TODO support subtitle filters
1112                 av_assert0(0);
1113             }
1114
1115             av_frame_unref(filtered_frame);
1116         }
1117     }
1118
1119     return 0;
1120 }
1121
1122 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1123 {
1124     char buf[1024];
1125     AVBPrint buf_script;
1126     OutputStream *ost;
1127     AVFormatContext *oc;
1128     int64_t total_size;
1129     AVCodecContext *enc;
1130     int frame_number, vid, i;
1131     double bitrate;
1132     int64_t pts = INT64_MIN;
1133     static int64_t last_time = -1;
1134     static int qp_histogram[52];
1135     int hours, mins, secs, us;
1136
1137     if (!print_stats && !is_last_report && !progress_avio)
1138         return;
1139
1140     if (!is_last_report) {
1141         if (last_time == -1) {
1142             last_time = cur_time;
1143             return;
1144         }
1145         if ((cur_time - last_time) < 500000)
1146             return;
1147         last_time = cur_time;
1148     }
1149
1150
1151     oc = output_files[0]->ctx;
1152
1153     total_size = avio_size(oc->pb);
1154     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1155         total_size = avio_tell(oc->pb);
1156
1157     buf[0] = '\0';
1158     vid = 0;
1159     av_bprint_init(&buf_script, 0, 1);
1160     for (i = 0; i < nb_output_streams; i++) {
1161         float q = -1;
1162         ost = output_streams[i];
1163         enc = ost->st->codec;
1164         if (!ost->stream_copy && enc->coded_frame)
1165             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1166         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1167             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1168             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1169                        ost->file_index, ost->index, q);
1170         }
1171         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1172             float fps, t = (cur_time-timer_start) / 1000000.0;
1173
1174             frame_number = ost->frame_number;
1175             fps = t > 1 ? frame_number / t : 0;
1176             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1177                      frame_number, fps < 9.95, fps, q);
1178             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1179             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1180             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1181                        ost->file_index, ost->index, q);
1182             if (is_last_report)
1183                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1184             if (qp_hist) {
1185                 int j;
1186                 int qp = lrintf(q);
1187                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1188                     qp_histogram[qp]++;
1189                 for (j = 0; j < 32; j++)
1190                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1191             }
1192             if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1193                 int j;
1194                 double error, error_sum = 0;
1195                 double scale, scale_sum = 0;
1196                 double p;
1197                 char type[3] = { 'Y','U','V' };
1198                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1199                 for (j = 0; j < 3; j++) {
1200                     if (is_last_report) {
1201                         error = enc->error[j];
1202                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1203                     } else {
1204                         error = enc->coded_frame->error[j];
1205                         scale = enc->width * enc->height * 255.0 * 255.0;
1206                     }
1207                     if (j)
1208                         scale /= 4;
1209                     error_sum += error;
1210                     scale_sum += scale;
1211                     p = psnr(error / scale);
1212                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1213                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1214                                ost->file_index, ost->index, type[j] | 32, p);
1215                 }
1216                 p = psnr(error_sum / scale_sum);
1217                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1218                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1219                            ost->file_index, ost->index, p);
1220             }
1221             vid = 1;
1222         }
1223         /* compute min output value */
1224         if ((is_last_report || !ost->finished) && ost->st->pts.val != AV_NOPTS_VALUE)
1225             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1226                                           ost->st->time_base, AV_TIME_BASE_Q));
1227     }
1228
1229     secs = pts / AV_TIME_BASE;
1230     us = pts % AV_TIME_BASE;
1231     mins = secs / 60;
1232     secs %= 60;
1233     hours = mins / 60;
1234     mins %= 60;
1235
1236     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1237
1238     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1239                                  "size=N/A time=");
1240     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1241                                  "size=%8.0fkB time=", total_size / 1024.0);
1242     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1243              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1244              (100 * us) / AV_TIME_BASE);
1245     if (bitrate < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1246                               "bitrate=N/A");
1247     else             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1248                               "bitrate=%6.1fkbits/s", bitrate);
1249     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
1250     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1251     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1252     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1253                hours, mins, secs, us);
1254
1255     if (nb_frames_dup || nb_frames_drop)
1256         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1257                 nb_frames_dup, nb_frames_drop);
1258     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1259     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1260
1261     if (print_stats || is_last_report) {
1262         if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
1263             fprintf(stderr, "%s    \r", buf);
1264         } else
1265             av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1266
1267     fflush(stderr);
1268     }
1269
1270     if (progress_avio) {
1271         av_bprintf(&buf_script, "progress=%s\n",
1272                    is_last_report ? "end" : "continue");
1273         avio_write(progress_avio, buf_script.str,
1274                    FFMIN(buf_script.len, buf_script.size - 1));
1275         avio_flush(progress_avio);
1276         av_bprint_finalize(&buf_script, NULL);
1277         if (is_last_report) {
1278             avio_close(progress_avio);
1279             progress_avio = NULL;
1280         }
1281     }
1282
1283     if (is_last_report) {
1284         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1285         av_log(NULL, AV_LOG_INFO, "\n");
1286         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1287                video_size / 1024.0,
1288                audio_size / 1024.0,
1289                subtitle_size / 1024.0,
1290                extra_size / 1024.0,
1291                100.0 * (total_size - raw) / raw
1292         );
1293         if(video_size + audio_size + subtitle_size + extra_size == 0){
1294             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1295         }
1296     }
1297 }
1298
1299 static void flush_encoders(void)
1300 {
1301     int i, ret;
1302
1303     for (i = 0; i < nb_output_streams; i++) {
1304         OutputStream   *ost = output_streams[i];
1305         AVCodecContext *enc = ost->st->codec;
1306         AVFormatContext *os = output_files[ost->file_index]->ctx;
1307         int stop_encoding = 0;
1308
1309         if (!ost->encoding_needed)
1310             continue;
1311
1312         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1313             continue;
1314         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1315             continue;
1316
1317         for (;;) {
1318             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1319             const char *desc;
1320             int64_t *size;
1321
1322             switch (ost->st->codec->codec_type) {
1323             case AVMEDIA_TYPE_AUDIO:
1324                 encode = avcodec_encode_audio2;
1325                 desc   = "Audio";
1326                 size   = &audio_size;
1327                 break;
1328             case AVMEDIA_TYPE_VIDEO:
1329                 encode = avcodec_encode_video2;
1330                 desc   = "Video";
1331                 size   = &video_size;
1332                 break;
1333             default:
1334                 stop_encoding = 1;
1335             }
1336
1337             if (encode) {
1338                 AVPacket pkt;
1339                 int got_packet;
1340                 av_init_packet(&pkt);
1341                 pkt.data = NULL;
1342                 pkt.size = 0;
1343
1344                 update_benchmark(NULL);
1345                 ret = encode(enc, &pkt, NULL, &got_packet);
1346                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1347                 if (ret < 0) {
1348                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1349                     exit_program(1);
1350                 }
1351                 *size += pkt.size;
1352                 if (ost->logfile && enc->stats_out) {
1353                     fprintf(ost->logfile, "%s", enc->stats_out);
1354                 }
1355                 if (!got_packet) {
1356                     stop_encoding = 1;
1357                     break;
1358                 }
1359                 if (pkt.pts != AV_NOPTS_VALUE)
1360                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1361                 if (pkt.dts != AV_NOPTS_VALUE)
1362                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1363                 if (pkt.duration > 0)
1364                     pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1365                 write_frame(os, &pkt, ost);
1366                 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
1367                     do_video_stats(ost, pkt.size);
1368                 }
1369             }
1370
1371             if (stop_encoding)
1372                 break;
1373         }
1374     }
1375 }
1376
1377 /*
1378  * Check whether a packet from ist should be written into ost at this time
1379  */
1380 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1381 {
1382     OutputFile *of = output_files[ost->file_index];
1383     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1384
1385     if (ost->source_index != ist_index)
1386         return 0;
1387
1388     if (of->start_time != AV_NOPTS_VALUE && ist->pts < of->start_time)
1389         return 0;
1390
1391     return 1;
1392 }
1393
1394 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1395 {
1396     OutputFile *of = output_files[ost->file_index];
1397     InputFile   *f = input_files [ist->file_index];
1398     int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1399     int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1400     int64_t ist_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ist->st->time_base);
1401     AVPicture pict;
1402     AVPacket opkt;
1403
1404     av_init_packet(&opkt);
1405
1406     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1407         !ost->copy_initial_nonkeyframes)
1408         return;
1409
1410     if (pkt->pts == AV_NOPTS_VALUE) {
1411         if (!ost->frame_number && ist->pts < start_time &&
1412             !ost->copy_prior_start)
1413             return;
1414     } else {
1415         if (!ost->frame_number && pkt->pts < ist_tb_start_time &&
1416             !ost->copy_prior_start)
1417             return;
1418     }
1419
1420     if (of->recording_time != INT64_MAX &&
1421         ist->pts >= of->recording_time + start_time) {
1422         close_output_stream(ost);
1423         return;
1424     }
1425
1426     if (f->recording_time != INT64_MAX) {
1427         start_time = f->ctx->start_time;
1428         if (f->start_time != AV_NOPTS_VALUE)
1429             start_time += f->start_time;
1430         if (ist->pts >= f->recording_time + start_time) {
1431             close_output_stream(ost);
1432             return;
1433         }
1434     }
1435
1436     /* force the input stream PTS */
1437     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1438         audio_size += pkt->size;
1439     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1440         video_size += pkt->size;
1441         ost->sync_opts++;
1442     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1443         subtitle_size += pkt->size;
1444     }
1445
1446     if (pkt->pts != AV_NOPTS_VALUE)
1447         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1448     else
1449         opkt.pts = AV_NOPTS_VALUE;
1450
1451     if (pkt->dts == AV_NOPTS_VALUE)
1452         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1453     else
1454         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1455     opkt.dts -= ost_tb_start_time;
1456
1457     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1458         int duration = av_get_audio_frame_duration(ist->st->codec, pkt->size);
1459         if(!duration)
1460             duration = ist->st->codec->frame_size;
1461         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1462                                                (AVRational){1, ist->st->codec->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
1463                                                ost->st->time_base) - ost_tb_start_time;
1464     }
1465
1466     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1467     opkt.flags    = pkt->flags;
1468
1469     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1470     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1471        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1472        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1473        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1474        ) {
1475         if (av_parser_change(ost->parser, ost->st->codec,
1476                              &opkt.data, &opkt.size,
1477                              pkt->data, pkt->size,
1478                              pkt->flags & AV_PKT_FLAG_KEY)) {
1479             opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1480             if (!opkt.buf)
1481                 exit_program(1);
1482         }
1483     } else {
1484         opkt.data = pkt->data;
1485         opkt.size = pkt->size;
1486     }
1487
1488     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1489         /* store AVPicture in AVPacket, as expected by the output format */
1490         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1491         opkt.data = (uint8_t *)&pict;
1492         opkt.size = sizeof(AVPicture);
1493         opkt.flags |= AV_PKT_FLAG_KEY;
1494     }
1495
1496     write_frame(of->ctx, &opkt, ost);
1497     ost->st->codec->frame_number++;
1498 }
1499
1500 int guess_input_channel_layout(InputStream *ist)
1501 {
1502     AVCodecContext *dec = ist->st->codec;
1503
1504     if (!dec->channel_layout) {
1505         char layout_name[256];
1506
1507         if (dec->channels > ist->guess_layout_max)
1508             return 0;
1509         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1510         if (!dec->channel_layout)
1511             return 0;
1512         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1513                                      dec->channels, dec->channel_layout);
1514         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1515                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1516     }
1517     return 1;
1518 }
1519
1520 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1521 {
1522     AVFrame *decoded_frame, *f;
1523     AVCodecContext *avctx = ist->st->codec;
1524     int i, ret, err = 0, resample_changed;
1525     AVRational decoded_frame_tb;
1526
1527     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1528         return AVERROR(ENOMEM);
1529     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1530         return AVERROR(ENOMEM);
1531     decoded_frame = ist->decoded_frame;
1532
1533     update_benchmark(NULL);
1534     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1535     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1536
1537     if (ret >= 0 && avctx->sample_rate <= 0) {
1538         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1539         ret = AVERROR_INVALIDDATA;
1540     }
1541
1542     if (*got_output || ret<0 || pkt->size)
1543         decode_error_stat[ret<0] ++;
1544
1545     if (!*got_output || ret < 0) {
1546         if (!pkt->size) {
1547             for (i = 0; i < ist->nb_filters; i++)
1548 #if 1
1549                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1550 #else
1551                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1552 #endif
1553         }
1554         return ret;
1555     }
1556
1557 #if 1
1558     /* increment next_dts to use for the case where the input stream does not
1559        have timestamps or there are multiple frames in the packet */
1560     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1561                      avctx->sample_rate;
1562     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1563                      avctx->sample_rate;
1564 #endif
1565
1566     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1567                        ist->resample_channels       != avctx->channels               ||
1568                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1569                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1570     if (resample_changed) {
1571         char layout1[64], layout2[64];
1572
1573         if (!guess_input_channel_layout(ist)) {
1574             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1575                    "layout for Input Stream #%d.%d\n", ist->file_index,
1576                    ist->st->index);
1577             exit_program(1);
1578         }
1579         decoded_frame->channel_layout = avctx->channel_layout;
1580
1581         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1582                                      ist->resample_channel_layout);
1583         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1584                                      decoded_frame->channel_layout);
1585
1586         av_log(NULL, AV_LOG_INFO,
1587                "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",
1588                ist->file_index, ist->st->index,
1589                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1590                ist->resample_channels, layout1,
1591                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1592                avctx->channels, layout2);
1593
1594         ist->resample_sample_fmt     = decoded_frame->format;
1595         ist->resample_sample_rate    = decoded_frame->sample_rate;
1596         ist->resample_channel_layout = decoded_frame->channel_layout;
1597         ist->resample_channels       = avctx->channels;
1598
1599         for (i = 0; i < nb_filtergraphs; i++)
1600             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1601                 FilterGraph *fg = filtergraphs[i];
1602                 int j;
1603                 if (configure_filtergraph(fg) < 0) {
1604                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1605                     exit_program(1);
1606                 }
1607                 for (j = 0; j < fg->nb_outputs; j++) {
1608                     OutputStream *ost = fg->outputs[j]->ost;
1609                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1610                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1611                         av_buffersink_set_frame_size(ost->filter->filter,
1612                                                      ost->st->codec->frame_size);
1613                 }
1614             }
1615     }
1616
1617     /* if the decoder provides a pts, use it instead of the last packet pts.
1618        the decoder could be delaying output by a packet or more. */
1619     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1620         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1621         decoded_frame_tb   = avctx->time_base;
1622     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1623         decoded_frame->pts = decoded_frame->pkt_pts;
1624         pkt->pts           = AV_NOPTS_VALUE;
1625         decoded_frame_tb   = ist->st->time_base;
1626     } else if (pkt->pts != AV_NOPTS_VALUE) {
1627         decoded_frame->pts = pkt->pts;
1628         pkt->pts           = AV_NOPTS_VALUE;
1629         decoded_frame_tb   = ist->st->time_base;
1630     }else {
1631         decoded_frame->pts = ist->dts;
1632         decoded_frame_tb   = AV_TIME_BASE_Q;
1633     }
1634     if (decoded_frame->pts != AV_NOPTS_VALUE)
1635         decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
1636                                               (AVRational){1, ist->st->codec->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
1637                                               (AVRational){1, ist->st->codec->sample_rate});
1638     for (i = 0; i < ist->nb_filters; i++) {
1639         if (i < ist->nb_filters - 1) {
1640             f = ist->filter_frame;
1641             err = av_frame_ref(f, decoded_frame);
1642             if (err < 0)
1643                 break;
1644         } else
1645             f = decoded_frame;
1646         err = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f,
1647                                      AV_BUFFERSRC_FLAG_PUSH);
1648         if (err == AVERROR_EOF)
1649             err = 0; /* ignore */
1650         if (err < 0)
1651             break;
1652     }
1653     decoded_frame->pts = AV_NOPTS_VALUE;
1654
1655     av_frame_unref(ist->filter_frame);
1656     av_frame_unref(decoded_frame);
1657     return err < 0 ? err : ret;
1658 }
1659
1660 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1661 {
1662     AVFrame *decoded_frame, *f;
1663     int i, ret = 0, err = 0, resample_changed;
1664     int64_t best_effort_timestamp;
1665     AVRational *frame_sample_aspect;
1666
1667     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1668         return AVERROR(ENOMEM);
1669     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1670         return AVERROR(ENOMEM);
1671     decoded_frame = ist->decoded_frame;
1672     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1673
1674     update_benchmark(NULL);
1675     ret = avcodec_decode_video2(ist->st->codec,
1676                                 decoded_frame, got_output, pkt);
1677     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1678
1679     if (*got_output || ret<0 || pkt->size)
1680         decode_error_stat[ret<0] ++;
1681
1682     if (!*got_output || ret < 0) {
1683         if (!pkt->size) {
1684             for (i = 0; i < ist->nb_filters; i++)
1685 #if 1
1686                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1687 #else
1688                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1689 #endif
1690         }
1691         return ret;
1692     }
1693
1694     if(ist->top_field_first>=0)
1695         decoded_frame->top_field_first = ist->top_field_first;
1696
1697     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1698     if(best_effort_timestamp != AV_NOPTS_VALUE)
1699         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1700
1701     if (debug_ts) {
1702         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1703                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1704                 ist->st->index, av_ts2str(decoded_frame->pts),
1705                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1706                 best_effort_timestamp,
1707                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1708                 decoded_frame->key_frame, decoded_frame->pict_type);
1709     }
1710
1711     pkt->size = 0;
1712
1713     if (ist->st->sample_aspect_ratio.num)
1714         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1715
1716     resample_changed = ist->resample_width   != decoded_frame->width  ||
1717                        ist->resample_height  != decoded_frame->height ||
1718                        ist->resample_pix_fmt != decoded_frame->format;
1719     if (resample_changed) {
1720         av_log(NULL, AV_LOG_INFO,
1721                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1722                ist->file_index, ist->st->index,
1723                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1724                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1725
1726         ist->resample_width   = decoded_frame->width;
1727         ist->resample_height  = decoded_frame->height;
1728         ist->resample_pix_fmt = decoded_frame->format;
1729
1730         for (i = 0; i < nb_filtergraphs; i++) {
1731             if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
1732                 configure_filtergraph(filtergraphs[i]) < 0) {
1733                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1734                 exit_program(1);
1735             }
1736         }
1737     }
1738
1739     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1740     for (i = 0; i < ist->nb_filters; i++) {
1741         if (!frame_sample_aspect->num)
1742             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1743
1744         if (i < ist->nb_filters - 1) {
1745             f = ist->filter_frame;
1746             err = av_frame_ref(f, decoded_frame);
1747             if (err < 0)
1748                 break;
1749         } else
1750             f = decoded_frame;
1751         ret = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f, AV_BUFFERSRC_FLAG_PUSH);
1752         if (ret == AVERROR_EOF) {
1753             ret = 0; /* ignore */
1754         } else if (ret < 0) {
1755             av_log(NULL, AV_LOG_FATAL,
1756                    "Failed to inject frame into filter network: %s\n", av_err2str(ret));
1757             exit_program(1);
1758         }
1759     }
1760
1761     av_frame_unref(ist->filter_frame);
1762     av_frame_unref(decoded_frame);
1763     return err < 0 ? err : ret;
1764 }
1765
1766 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1767 {
1768     AVSubtitle subtitle;
1769     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1770                                           &subtitle, got_output, pkt);
1771
1772     if (*got_output || ret<0 || pkt->size)
1773         decode_error_stat[ret<0] ++;
1774
1775     if (ret < 0 || !*got_output) {
1776         if (!pkt->size)
1777             sub2video_flush(ist);
1778         return ret;
1779     }
1780
1781     if (ist->fix_sub_duration) {
1782         if (ist->prev_sub.got_output) {
1783             int end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1784                                  1000, AV_TIME_BASE);
1785             if (end < ist->prev_sub.subtitle.end_display_time) {
1786                 av_log(ist->st->codec, AV_LOG_DEBUG,
1787                        "Subtitle duration reduced from %d to %d\n",
1788                        ist->prev_sub.subtitle.end_display_time, end);
1789                 ist->prev_sub.subtitle.end_display_time = end;
1790             }
1791         }
1792         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1793         FFSWAP(int,        ret,         ist->prev_sub.ret);
1794         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1795     }
1796
1797     sub2video_update(ist, &subtitle);
1798
1799     if (!*got_output || !subtitle.num_rects)
1800         return ret;
1801
1802     for (i = 0; i < nb_output_streams; i++) {
1803         OutputStream *ost = output_streams[i];
1804
1805         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1806             continue;
1807
1808         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
1809     }
1810
1811     avsubtitle_free(&subtitle);
1812     return ret;
1813 }
1814
1815 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1816 static int output_packet(InputStream *ist, const AVPacket *pkt)
1817 {
1818     int ret = 0, i;
1819     int got_output = 0;
1820
1821     AVPacket avpkt;
1822     if (!ist->saw_first_ts) {
1823         ist->dts = ist->st->avg_frame_rate.num ? - ist->st->codec->has_b_frames * AV_TIME_BASE / av_q2d(ist->st->avg_frame_rate) : 0;
1824         ist->pts = 0;
1825         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1826             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1827             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1828         }
1829         ist->saw_first_ts = 1;
1830     }
1831
1832     if (ist->next_dts == AV_NOPTS_VALUE)
1833         ist->next_dts = ist->dts;
1834     if (ist->next_pts == AV_NOPTS_VALUE)
1835         ist->next_pts = ist->pts;
1836
1837     if (pkt == NULL) {
1838         /* EOF handling */
1839         av_init_packet(&avpkt);
1840         avpkt.data = NULL;
1841         avpkt.size = 0;
1842         goto handle_eof;
1843     } else {
1844         avpkt = *pkt;
1845     }
1846
1847     if (pkt->dts != AV_NOPTS_VALUE) {
1848         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1849         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1850             ist->next_pts = ist->pts = ist->dts;
1851     }
1852
1853     // while we have more to decode or while the decoder did output something on EOF
1854     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1855         int duration;
1856     handle_eof:
1857
1858         ist->pts = ist->next_pts;
1859         ist->dts = ist->next_dts;
1860
1861         if (avpkt.size && avpkt.size != pkt->size) {
1862             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1863                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1864             ist->showed_multi_packet_warning = 1;
1865         }
1866
1867         switch (ist->st->codec->codec_type) {
1868         case AVMEDIA_TYPE_AUDIO:
1869             ret = decode_audio    (ist, &avpkt, &got_output);
1870             break;
1871         case AVMEDIA_TYPE_VIDEO:
1872             ret = decode_video    (ist, &avpkt, &got_output);
1873             if (avpkt.duration) {
1874                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1875             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1876                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1877                 duration = ((int64_t)AV_TIME_BASE *
1878                                 ist->st->codec->time_base.num * ticks) /
1879                                 ist->st->codec->time_base.den;
1880             } else
1881                 duration = 0;
1882
1883             if(ist->dts != AV_NOPTS_VALUE && duration) {
1884                 ist->next_dts += duration;
1885             }else
1886                 ist->next_dts = AV_NOPTS_VALUE;
1887
1888             if (got_output)
1889                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1890             break;
1891         case AVMEDIA_TYPE_SUBTITLE:
1892             ret = transcode_subtitles(ist, &avpkt, &got_output);
1893             break;
1894         default:
1895             return -1;
1896         }
1897
1898         if (ret < 0)
1899             return ret;
1900
1901         avpkt.dts=
1902         avpkt.pts= AV_NOPTS_VALUE;
1903
1904         // touch data and size only if not EOF
1905         if (pkt) {
1906             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1907                 ret = avpkt.size;
1908             avpkt.data += ret;
1909             avpkt.size -= ret;
1910         }
1911         if (!got_output) {
1912             continue;
1913         }
1914     }
1915
1916     /* handle stream copy */
1917     if (!ist->decoding_needed) {
1918         ist->dts = ist->next_dts;
1919         switch (ist->st->codec->codec_type) {
1920         case AVMEDIA_TYPE_AUDIO:
1921             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1922                              ist->st->codec->sample_rate;
1923             break;
1924         case AVMEDIA_TYPE_VIDEO:
1925             if (ist->framerate.num) {
1926                 // TODO: Remove work-around for c99-to-c89 issue 7
1927                 AVRational time_base_q = AV_TIME_BASE_Q;
1928                 int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate));
1929                 ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q);
1930             } else if (pkt->duration) {
1931                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1932             } else if(ist->st->codec->time_base.num != 0) {
1933                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1934                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1935                                   ist->st->codec->time_base.num * ticks) /
1936                                   ist->st->codec->time_base.den;
1937             }
1938             break;
1939         }
1940         ist->pts = ist->dts;
1941         ist->next_pts = ist->next_dts;
1942     }
1943     for (i = 0; pkt && i < nb_output_streams; i++) {
1944         OutputStream *ost = output_streams[i];
1945
1946         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1947             continue;
1948
1949         do_streamcopy(ist, ost, pkt);
1950     }
1951
1952     return 0;
1953 }
1954
1955 static void print_sdp(void)
1956 {
1957     char sdp[16384];
1958     int i;
1959     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1960
1961     if (!avc)
1962         exit_program(1);
1963     for (i = 0; i < nb_output_files; i++)
1964         avc[i] = output_files[i]->ctx;
1965
1966     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1967     printf("SDP:\n%s\n", sdp);
1968     fflush(stdout);
1969     av_freep(&avc);
1970 }
1971
1972 static int init_input_stream(int ist_index, char *error, int error_len)
1973 {
1974     int ret;
1975     InputStream *ist = input_streams[ist_index];
1976
1977     if (ist->decoding_needed) {
1978         AVCodec *codec = ist->dec;
1979         if (!codec) {
1980             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1981                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1982             return AVERROR(EINVAL);
1983         }
1984
1985         av_opt_set_int(ist->st->codec, "refcounted_frames", 1, 0);
1986
1987         if (!av_dict_get(ist->opts, "threads", NULL, 0))
1988             av_dict_set(&ist->opts, "threads", "auto", 0);
1989         if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
1990             char errbuf[128];
1991             if (ret == AVERROR_EXPERIMENTAL)
1992                 abort_codec_experimental(codec, 0);
1993
1994             av_strerror(ret, errbuf, sizeof(errbuf));
1995
1996             snprintf(error, error_len,
1997                      "Error while opening decoder for input stream "
1998                      "#%d:%d : %s",
1999                      ist->file_index, ist->st->index, errbuf);
2000             return ret;
2001         }
2002         assert_avoptions(ist->opts);
2003     }
2004
2005     ist->next_pts = AV_NOPTS_VALUE;
2006     ist->next_dts = AV_NOPTS_VALUE;
2007     ist->is_start = 1;
2008
2009     return 0;
2010 }
2011
2012 static InputStream *get_input_stream(OutputStream *ost)
2013 {
2014     if (ost->source_index >= 0)
2015         return input_streams[ost->source_index];
2016     return NULL;
2017 }
2018
2019 static int compare_int64(const void *a, const void *b)
2020 {
2021     int64_t va = *(int64_t *)a, vb = *(int64_t *)b;
2022     return va < vb ? -1 : va > vb ? +1 : 0;
2023 }
2024
2025 static void parse_forced_key_frames(char *kf, OutputStream *ost,
2026                                     AVCodecContext *avctx)
2027 {
2028     char *p;
2029     int n = 1, i, size, index = 0;
2030     int64_t t, *pts;
2031
2032     for (p = kf; *p; p++)
2033         if (*p == ',')
2034             n++;
2035     size = n;
2036     pts = av_malloc(sizeof(*pts) * size);
2037     if (!pts) {
2038         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
2039         exit_program(1);
2040     }
2041
2042     p = kf;
2043     for (i = 0; i < n; i++) {
2044         char *next = strchr(p, ',');
2045
2046         if (next)
2047             *next++ = 0;
2048
2049         if (!memcmp(p, "chapters", 8)) {
2050
2051             AVFormatContext *avf = output_files[ost->file_index]->ctx;
2052             int j;
2053
2054             if (avf->nb_chapters > INT_MAX - size ||
2055                 !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
2056                                      sizeof(*pts)))) {
2057                 av_log(NULL, AV_LOG_FATAL,
2058                        "Could not allocate forced key frames array.\n");
2059                 exit_program(1);
2060             }
2061             t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
2062             t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2063
2064             for (j = 0; j < avf->nb_chapters; j++) {
2065                 AVChapter *c = avf->chapters[j];
2066                 av_assert1(index < size);
2067                 pts[index++] = av_rescale_q(c->start, c->time_base,
2068                                             avctx->time_base) + t;
2069             }
2070
2071         } else {
2072
2073             t = parse_time_or_die("force_key_frames", p, 1);
2074             av_assert1(index < size);
2075             pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2076
2077         }
2078
2079         p = next;
2080     }
2081
2082     av_assert0(index == size);
2083     qsort(pts, size, sizeof(*pts), compare_int64);
2084     ost->forced_kf_count = size;
2085     ost->forced_kf_pts   = pts;
2086 }
2087
2088 static void report_new_stream(int input_index, AVPacket *pkt)
2089 {
2090     InputFile *file = input_files[input_index];
2091     AVStream *st = file->ctx->streams[pkt->stream_index];
2092
2093     if (pkt->stream_index < file->nb_streams_warn)
2094         return;
2095     av_log(file->ctx, AV_LOG_WARNING,
2096            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
2097            av_get_media_type_string(st->codec->codec_type),
2098            input_index, pkt->stream_index,
2099            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
2100     file->nb_streams_warn = pkt->stream_index + 1;
2101 }
2102
2103 static int transcode_init(void)
2104 {
2105     int ret = 0, i, j, k;
2106     AVFormatContext *oc;
2107     AVCodecContext *codec;
2108     OutputStream *ost;
2109     InputStream *ist;
2110     char error[1024];
2111     int want_sdp = 1;
2112
2113     for (i = 0; i < nb_filtergraphs; i++) {
2114         FilterGraph *fg = filtergraphs[i];
2115         for (j = 0; j < fg->nb_outputs; j++) {
2116             OutputFilter *ofilter = fg->outputs[j];
2117             if (!ofilter->ost || ofilter->ost->source_index >= 0)
2118                 continue;
2119             if (fg->nb_inputs != 1)
2120                 continue;
2121             for (k = nb_input_streams-1; k >= 0 ; k--)
2122                 if (fg->inputs[0]->ist == input_streams[k])
2123                     break;
2124             ofilter->ost->source_index = k;
2125         }
2126     }
2127
2128     /* init framerate emulation */
2129     for (i = 0; i < nb_input_files; i++) {
2130         InputFile *ifile = input_files[i];
2131         if (ifile->rate_emu)
2132             for (j = 0; j < ifile->nb_streams; j++)
2133                 input_streams[j + ifile->ist_index]->start = av_gettime();
2134     }
2135
2136     /* output stream init */
2137     for (i = 0; i < nb_output_files; i++) {
2138         oc = output_files[i]->ctx;
2139         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2140             av_dump_format(oc, i, oc->filename, 1);
2141             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2142             return AVERROR(EINVAL);
2143         }
2144     }
2145
2146     /* init complex filtergraphs */
2147     for (i = 0; i < nb_filtergraphs; i++)
2148         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2149             return ret;
2150
2151     /* for each output stream, we compute the right encoding parameters */
2152     for (i = 0; i < nb_output_streams; i++) {
2153         AVCodecContext *icodec = NULL;
2154         ost = output_streams[i];
2155         oc  = output_files[ost->file_index]->ctx;
2156         ist = get_input_stream(ost);
2157
2158         if (ost->attachment_filename)
2159             continue;
2160
2161         codec  = ost->st->codec;
2162
2163         if (ist) {
2164             icodec = ist->st->codec;
2165
2166             ost->st->disposition          = ist->st->disposition;
2167             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2168             codec->chroma_sample_location = icodec->chroma_sample_location;
2169         } else {
2170             for (j=0; j<oc->nb_streams; j++) {
2171                 AVStream *st = oc->streams[j];
2172                 if (st != ost->st && st->codec->codec_type == codec->codec_type)
2173                     break;
2174             }
2175             if (j == oc->nb_streams)
2176                 if (codec->codec_type == AVMEDIA_TYPE_AUDIO || codec->codec_type == AVMEDIA_TYPE_VIDEO)
2177                     ost->st->disposition = AV_DISPOSITION_DEFAULT;
2178         }
2179
2180         if (ost->stream_copy) {
2181             AVRational sar;
2182             uint64_t extra_size;
2183
2184             av_assert0(ist && !ost->filter);
2185
2186             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2187
2188             if (extra_size > INT_MAX) {
2189                 return AVERROR(EINVAL);
2190             }
2191
2192             /* if stream_copy is selected, no need to decode or encode */
2193             codec->codec_id   = icodec->codec_id;
2194             codec->codec_type = icodec->codec_type;
2195
2196             if (!codec->codec_tag) {
2197                 unsigned int codec_tag;
2198                 if (!oc->oformat->codec_tag ||
2199                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2200                      !av_codec_get_tag2(oc->oformat->codec_tag, icodec->codec_id, &codec_tag))
2201                     codec->codec_tag = icodec->codec_tag;
2202             }
2203
2204             codec->bit_rate       = icodec->bit_rate;
2205             codec->rc_max_rate    = icodec->rc_max_rate;
2206             codec->rc_buffer_size = icodec->rc_buffer_size;
2207             codec->field_order    = icodec->field_order;
2208             codec->extradata      = av_mallocz(extra_size);
2209             if (!codec->extradata) {
2210                 return AVERROR(ENOMEM);
2211             }
2212             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2213             codec->extradata_size= icodec->extradata_size;
2214             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2215
2216             codec->time_base = ist->st->time_base;
2217             /*
2218              * Avi is a special case here because it supports variable fps but
2219              * having the fps and timebase differe significantly adds quite some
2220              * overhead
2221              */
2222             if(!strcmp(oc->oformat->name, "avi")) {
2223                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2224                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2225                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2226                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2227                      || copy_tb==2){
2228                     codec->time_base.num = ist->st->r_frame_rate.den;
2229                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2230                     codec->ticks_per_frame = 2;
2231                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2232                                  && av_q2d(ist->st->time_base) < 1.0/500
2233                     || copy_tb==0){
2234                     codec->time_base = icodec->time_base;
2235                     codec->time_base.num *= icodec->ticks_per_frame;
2236                     codec->time_base.den *= 2;
2237                     codec->ticks_per_frame = 2;
2238                 }
2239             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2240                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2241                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2242                       && strcmp(oc->oformat->name, "f4v")
2243             ) {
2244                 if(   copy_tb<0 && icodec->time_base.den
2245                                 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2246                                 && av_q2d(ist->st->time_base) < 1.0/500
2247                    || copy_tb==0){
2248                     codec->time_base = icodec->time_base;
2249                     codec->time_base.num *= icodec->ticks_per_frame;
2250                 }
2251             }
2252             if (   codec->codec_tag == AV_RL32("tmcd")
2253                 && icodec->time_base.num < icodec->time_base.den
2254                 && icodec->time_base.num > 0
2255                 && 121LL*icodec->time_base.num > icodec->time_base.den) {
2256                 codec->time_base = icodec->time_base;
2257             }
2258
2259             if (ist && !ost->frame_rate.num)
2260                 ost->frame_rate = ist->framerate;
2261             if(ost->frame_rate.num)
2262                 codec->time_base = av_inv_q(ost->frame_rate);
2263
2264             av_reduce(&codec->time_base.num, &codec->time_base.den,
2265                         codec->time_base.num, codec->time_base.den, INT_MAX);
2266
2267             ost->parser = av_parser_init(codec->codec_id);
2268
2269             switch (codec->codec_type) {
2270             case AVMEDIA_TYPE_AUDIO:
2271                 if (audio_volume != 256) {
2272                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2273                     exit_program(1);
2274                 }
2275                 codec->channel_layout     = icodec->channel_layout;
2276                 codec->sample_rate        = icodec->sample_rate;
2277                 codec->channels           = icodec->channels;
2278                 codec->frame_size         = icodec->frame_size;
2279                 codec->audio_service_type = icodec->audio_service_type;
2280                 codec->block_align        = icodec->block_align;
2281                 if((codec->block_align == 1 || codec->block_align == 1152 || codec->block_align == 576) && codec->codec_id == AV_CODEC_ID_MP3)
2282                     codec->block_align= 0;
2283                 if(codec->codec_id == AV_CODEC_ID_AC3)
2284                     codec->block_align= 0;
2285                 break;
2286             case AVMEDIA_TYPE_VIDEO:
2287                 codec->pix_fmt            = icodec->pix_fmt;
2288                 codec->width              = icodec->width;
2289                 codec->height             = icodec->height;
2290                 codec->has_b_frames       = icodec->has_b_frames;
2291                 if (ost->frame_aspect_ratio.num) { // overridden by the -aspect cli option
2292                     sar =
2293                         av_mul_q(ost->frame_aspect_ratio,
2294                                  (AVRational){ codec->height, codec->width });
2295                     av_log(NULL, AV_LOG_WARNING, "Overriding aspect ratio "
2296                            "with stream copy may produce invalid files\n");
2297                 }
2298                 else if (ist->st->sample_aspect_ratio.num)
2299                     sar = ist->st->sample_aspect_ratio;
2300                 else
2301                     sar = icodec->sample_aspect_ratio;
2302                 ost->st->sample_aspect_ratio = codec->sample_aspect_ratio = sar;
2303                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2304                 break;
2305             case AVMEDIA_TYPE_SUBTITLE:
2306                 codec->width  = icodec->width;
2307                 codec->height = icodec->height;
2308                 break;
2309             case AVMEDIA_TYPE_DATA:
2310             case AVMEDIA_TYPE_ATTACHMENT:
2311                 break;
2312             default:
2313                 abort();
2314             }
2315         } else {
2316             if (!ost->enc)
2317                 ost->enc = avcodec_find_encoder(codec->codec_id);
2318             if (!ost->enc) {
2319                 /* should only happen when a default codec is not present. */
2320                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2321                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2322                 ret = AVERROR(EINVAL);
2323                 goto dump_format;
2324             }
2325
2326             if (ist)
2327                 ist->decoding_needed++;
2328             ost->encoding_needed = 1;
2329
2330             if (!ost->filter &&
2331                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2332                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2333                     FilterGraph *fg;
2334                     fg = init_simple_filtergraph(ist, ost);
2335                     if (configure_filtergraph(fg)) {
2336                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2337                         exit_program(1);
2338                     }
2339             }
2340
2341             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2342                 if (ost->filter && !ost->frame_rate.num)
2343                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2344                 if (ist && !ost->frame_rate.num)
2345                     ost->frame_rate = ist->framerate;
2346                 if (ist && !ost->frame_rate.num)
2347                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2348 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2349                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2350                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2351                     ost->frame_rate = ost->enc->supported_framerates[idx];
2352                 }
2353             }
2354
2355             switch (codec->codec_type) {
2356             case AVMEDIA_TYPE_AUDIO:
2357                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2358                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2359                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2360                 codec->channels       = avfilter_link_get_channels(ost->filter->filter->inputs[0]);
2361                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2362                 break;
2363             case AVMEDIA_TYPE_VIDEO:
2364                 codec->time_base = av_inv_q(ost->frame_rate);
2365                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2366                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2367                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2368                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2369                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2370                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2371                 }
2372                 for (j = 0; j < ost->forced_kf_count; j++)
2373                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2374                                                          AV_TIME_BASE_Q,
2375                                                          codec->time_base);
2376
2377                 codec->width  = ost->filter->filter->inputs[0]->w;
2378                 codec->height = ost->filter->filter->inputs[0]->h;
2379                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2380                     ost->frame_aspect_ratio.num ? // overridden by the -aspect cli option
2381                     av_mul_q(ost->frame_aspect_ratio, (AVRational){ codec->height, codec->width }) :
2382                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2383                 if (!strncmp(ost->enc->name, "libx264", 7) &&
2384                     codec->pix_fmt == AV_PIX_FMT_NONE &&
2385                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2386                     av_log(NULL, AV_LOG_WARNING,
2387                            "No pixel format specified, %s for H.264 encoding chosen.\n"
2388                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2389                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2390                 if (!strncmp(ost->enc->name, "mpeg2video", 10) &&
2391                     codec->pix_fmt == AV_PIX_FMT_NONE &&
2392                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2393                     av_log(NULL, AV_LOG_WARNING,
2394                            "No pixel format specified, %s for MPEG-2 encoding chosen.\n"
2395                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2396                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2397                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2398
2399                 if (!icodec ||
2400                     codec->width   != icodec->width  ||
2401                     codec->height  != icodec->height ||
2402                     codec->pix_fmt != icodec->pix_fmt) {
2403                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2404                 }
2405
2406                 if (ost->forced_keyframes) {
2407                     if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
2408                         ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
2409                                             forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
2410                         if (ret < 0) {
2411                             av_log(NULL, AV_LOG_ERROR,
2412                                    "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
2413                             return ret;
2414                         }
2415                         ost->forced_keyframes_expr_const_values[FKF_N] = 0;
2416                         ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
2417                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
2418                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;
2419                     } else {
2420                         parse_forced_key_frames(ost->forced_keyframes, ost, ost->st->codec);
2421                     }
2422                 }
2423                 break;
2424             case AVMEDIA_TYPE_SUBTITLE:
2425                 codec->time_base = (AVRational){1, 1000};
2426                 if (!codec->width) {
2427                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2428                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2429                 }
2430                 break;
2431             default:
2432                 abort();
2433                 break;
2434             }
2435             /* two pass mode */
2436             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2437                 char logfilename[1024];
2438                 FILE *f;
2439
2440                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2441                          ost->logfile_prefix ? ost->logfile_prefix :
2442                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2443                          i);
2444                 if (!strcmp(ost->enc->name, "libx264")) {
2445                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2446                 } else {
2447                     if (codec->flags & CODEC_FLAG_PASS2) {
2448                         char  *logbuffer;
2449                         size_t logbuffer_size;
2450                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2451                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2452                                    logfilename);
2453                             exit_program(1);
2454                         }
2455                         codec->stats_in = logbuffer;
2456                     }
2457                     if (codec->flags & CODEC_FLAG_PASS1) {
2458                         f = fopen(logfilename, "wb");
2459                         if (!f) {
2460                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2461                                 logfilename, strerror(errno));
2462                             exit_program(1);
2463                         }
2464                         ost->logfile = f;
2465                     }
2466                 }
2467             }
2468         }
2469     }
2470
2471     /* open each encoder */
2472     for (i = 0; i < nb_output_streams; i++) {
2473         ost = output_streams[i];
2474         if (ost->encoding_needed) {
2475             AVCodec      *codec = ost->enc;
2476             AVCodecContext *dec = NULL;
2477
2478             if ((ist = get_input_stream(ost)))
2479                 dec = ist->st->codec;
2480             if (dec && dec->subtitle_header) {
2481                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2482                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2483                 if (!ost->st->codec->subtitle_header) {
2484                     ret = AVERROR(ENOMEM);
2485                     goto dump_format;
2486                 }
2487                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2488                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2489             }
2490             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2491                 av_dict_set(&ost->opts, "threads", "auto", 0);
2492             if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
2493                 if (ret == AVERROR_EXPERIMENTAL)
2494                     abort_codec_experimental(codec, 1);
2495                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2496                         ost->file_index, ost->index);
2497                 goto dump_format;
2498             }
2499             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2500                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2501                 av_buffersink_set_frame_size(ost->filter->filter,
2502                                              ost->st->codec->frame_size);
2503             assert_avoptions(ost->opts);
2504             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2505                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2506                                              " It takes bits/s as argument, not kbits/s\n");
2507             extra_size += ost->st->codec->extradata_size;
2508         } else {
2509             av_opt_set_dict(ost->st->codec, &ost->opts);
2510         }
2511     }
2512
2513     /* init input streams */
2514     for (i = 0; i < nb_input_streams; i++)
2515         if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
2516             for (i = 0; i < nb_output_streams; i++) {
2517                 ost = output_streams[i];
2518                 avcodec_close(ost->st->codec);
2519             }
2520             goto dump_format;
2521         }
2522
2523     /* discard unused programs */
2524     for (i = 0; i < nb_input_files; i++) {
2525         InputFile *ifile = input_files[i];
2526         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2527             AVProgram *p = ifile->ctx->programs[j];
2528             int discard  = AVDISCARD_ALL;
2529
2530             for (k = 0; k < p->nb_stream_indexes; k++)
2531                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2532                     discard = AVDISCARD_DEFAULT;
2533                     break;
2534                 }
2535             p->discard = discard;
2536         }
2537     }
2538
2539     /* open files and write file headers */
2540     for (i = 0; i < nb_output_files; i++) {
2541         oc = output_files[i]->ctx;
2542         oc->interrupt_callback = int_cb;
2543         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2544             char errbuf[128];
2545             av_strerror(ret, errbuf, sizeof(errbuf));
2546             snprintf(error, sizeof(error),
2547                      "Could not write header for output file #%d "
2548                      "(incorrect codec parameters ?): %s",
2549                      i, errbuf);
2550             ret = AVERROR(EINVAL);
2551             goto dump_format;
2552         }
2553 //         assert_avoptions(output_files[i]->opts);
2554         if (strcmp(oc->oformat->name, "rtp")) {
2555             want_sdp = 0;
2556         }
2557     }
2558
2559  dump_format:
2560     /* dump the file output parameters - cannot be done before in case
2561        of stream copy */
2562     for (i = 0; i < nb_output_files; i++) {
2563         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2564     }
2565
2566     /* dump the stream mapping */
2567     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2568     for (i = 0; i < nb_input_streams; i++) {
2569         ist = input_streams[i];
2570
2571         for (j = 0; j < ist->nb_filters; j++) {
2572             if (ist->filters[j]->graph->graph_desc) {
2573                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2574                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2575                        ist->filters[j]->name);
2576                 if (nb_filtergraphs > 1)
2577                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2578                 av_log(NULL, AV_LOG_INFO, "\n");
2579             }
2580         }
2581     }
2582
2583     for (i = 0; i < nb_output_streams; i++) {
2584         ost = output_streams[i];
2585
2586         if (ost->attachment_filename) {
2587             /* an attached file */
2588             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2589                    ost->attachment_filename, ost->file_index, ost->index);
2590             continue;
2591         }
2592
2593         if (ost->filter && ost->filter->graph->graph_desc) {
2594             /* output from a complex graph */
2595             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2596             if (nb_filtergraphs > 1)
2597                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2598
2599             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2600                    ost->index, ost->enc ? ost->enc->name : "?");
2601             continue;
2602         }
2603
2604         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2605                input_streams[ost->source_index]->file_index,
2606                input_streams[ost->source_index]->st->index,
2607                ost->file_index,
2608                ost->index);
2609         if (ost->sync_ist != input_streams[ost->source_index])
2610             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2611                    ost->sync_ist->file_index,
2612                    ost->sync_ist->st->index);
2613         if (ost->stream_copy)
2614             av_log(NULL, AV_LOG_INFO, " (copy)");
2615         else
2616             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2617                    input_streams[ost->source_index]->dec->name : "?",
2618                    ost->enc ? ost->enc->name : "?");
2619         av_log(NULL, AV_LOG_INFO, "\n");
2620     }
2621
2622     if (ret) {
2623         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2624         return ret;
2625     }
2626
2627     if (want_sdp) {
2628         print_sdp();
2629     }
2630
2631     return 0;
2632 }
2633
2634 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2635 static int need_output(void)
2636 {
2637     int i;
2638
2639     for (i = 0; i < nb_output_streams; i++) {
2640         OutputStream *ost    = output_streams[i];
2641         OutputFile *of       = output_files[ost->file_index];
2642         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2643
2644         if (ost->finished ||
2645             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2646             continue;
2647         if (ost->frame_number >= ost->max_frames) {
2648             int j;
2649             for (j = 0; j < of->ctx->nb_streams; j++)
2650                 close_output_stream(output_streams[of->ost_index + j]);
2651             continue;
2652         }
2653
2654         return 1;
2655     }
2656
2657     return 0;
2658 }
2659
2660 /**
2661  * Select the output stream to process.
2662  *
2663  * @return  selected output stream, or NULL if none available
2664  */
2665 static OutputStream *choose_output(void)
2666 {
2667     int i;
2668     int64_t opts_min = INT64_MAX;
2669     OutputStream *ost_min = NULL;
2670
2671     for (i = 0; i < nb_output_streams; i++) {
2672         OutputStream *ost = output_streams[i];
2673         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2674                                     AV_TIME_BASE_Q);
2675         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2676             opts_min = opts;
2677             ost_min  = ost;
2678         }
2679     }
2680     return ost_min;
2681 }
2682
2683 static int check_keyboard_interaction(int64_t cur_time)
2684 {
2685     int i, ret, key;
2686     static int64_t last_time;
2687     if (received_nb_signals)
2688         return AVERROR_EXIT;
2689     /* read_key() returns 0 on EOF */
2690     if(cur_time - last_time >= 100000 && !run_as_daemon){
2691         key =  read_key();
2692         last_time = cur_time;
2693     }else
2694         key = -1;
2695     if (key == 'q')
2696         return AVERROR_EXIT;
2697     if (key == '+') av_log_set_level(av_log_get_level()+10);
2698     if (key == '-') av_log_set_level(av_log_get_level()-10);
2699     if (key == 's') qp_hist     ^= 1;
2700     if (key == 'h'){
2701         if (do_hex_dump){
2702             do_hex_dump = do_pkt_dump = 0;
2703         } else if(do_pkt_dump){
2704             do_hex_dump = 1;
2705         } else
2706             do_pkt_dump = 1;
2707         av_log_set_level(AV_LOG_DEBUG);
2708     }
2709     if (key == 'c' || key == 'C'){
2710         char buf[4096], target[64], command[256], arg[256] = {0};
2711         double time;
2712         int k, n = 0;
2713         fprintf(stderr, "\nEnter command: <target>|all <time>|-1 <command>[ <argument>]\n");
2714         i = 0;
2715         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2716             if (k > 0)
2717                 buf[i++] = k;
2718         buf[i] = 0;
2719         if (k > 0 &&
2720             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2721             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2722                    target, time, command, arg);
2723             for (i = 0; i < nb_filtergraphs; i++) {
2724                 FilterGraph *fg = filtergraphs[i];
2725                 if (fg->graph) {
2726                     if (time < 0) {
2727                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2728                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2729                         fprintf(stderr, "Command reply for stream %d: ret:%d res:\n%s", i, ret, buf);
2730                     } else if (key == 'c') {
2731                         fprintf(stderr, "Queing commands only on filters supporting the specific command is unsupported\n");
2732                         ret = AVERROR_PATCHWELCOME;
2733                     } else {
2734                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2735                     }
2736                 }
2737             }
2738         } else {
2739             av_log(NULL, AV_LOG_ERROR,
2740                    "Parse error, at least 3 arguments were expected, "
2741                    "only %d given in string '%s'\n", n, buf);
2742         }
2743     }
2744     if (key == 'd' || key == 'D'){
2745         int debug=0;
2746         if(key == 'D') {
2747             debug = input_streams[0]->st->codec->debug<<1;
2748             if(!debug) debug = 1;
2749             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2750                 debug += debug;
2751         }else
2752             if(scanf("%d", &debug)!=1)
2753                 fprintf(stderr,"error parsing debug value\n");
2754         for(i=0;i<nb_input_streams;i++) {
2755             input_streams[i]->st->codec->debug = debug;
2756         }
2757         for(i=0;i<nb_output_streams;i++) {
2758             OutputStream *ost = output_streams[i];
2759             ost->st->codec->debug = debug;
2760         }
2761         if(debug) av_log_set_level(AV_LOG_DEBUG);
2762         fprintf(stderr,"debug=%d\n", debug);
2763     }
2764     if (key == '?'){
2765         fprintf(stderr, "key    function\n"
2766                         "?      show this help\n"
2767                         "+      increase verbosity\n"
2768                         "-      decrease verbosity\n"
2769                         "c      Send command to first matching filter supporting it\n"
2770                         "C      Send/Que command to all matching filters\n"
2771                         "D      cycle through available debug modes\n"
2772                         "h      dump packets/hex press to cycle through the 3 states\n"
2773                         "q      quit\n"
2774                         "s      Show QP histogram\n"
2775         );
2776     }
2777     return 0;
2778 }
2779
2780 #if HAVE_PTHREADS
2781 static void *input_thread(void *arg)
2782 {
2783     InputFile *f = arg;
2784     int ret = 0;
2785
2786     while (!transcoding_finished && ret >= 0) {
2787         AVPacket pkt;
2788         ret = av_read_frame(f->ctx, &pkt);
2789
2790         if (ret == AVERROR(EAGAIN)) {
2791             av_usleep(10000);
2792             ret = 0;
2793             continue;
2794         } else if (ret < 0)
2795             break;
2796
2797         pthread_mutex_lock(&f->fifo_lock);
2798         while (!av_fifo_space(f->fifo))
2799             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2800
2801         av_dup_packet(&pkt);
2802         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2803
2804         pthread_mutex_unlock(&f->fifo_lock);
2805     }
2806
2807     f->finished = 1;
2808     return NULL;
2809 }
2810
2811 static void free_input_threads(void)
2812 {
2813     int i;
2814
2815     if (nb_input_files == 1)
2816         return;
2817
2818     transcoding_finished = 1;
2819
2820     for (i = 0; i < nb_input_files; i++) {
2821         InputFile *f = input_files[i];
2822         AVPacket pkt;
2823
2824         if (!f->fifo || f->joined)
2825             continue;
2826
2827         pthread_mutex_lock(&f->fifo_lock);
2828         while (av_fifo_size(f->fifo)) {
2829             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2830             av_free_packet(&pkt);
2831         }
2832         pthread_cond_signal(&f->fifo_cond);
2833         pthread_mutex_unlock(&f->fifo_lock);
2834
2835         pthread_join(f->thread, NULL);
2836         f->joined = 1;
2837
2838         while (av_fifo_size(f->fifo)) {
2839             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2840             av_free_packet(&pkt);
2841         }
2842         av_fifo_free(f->fifo);
2843     }
2844 }
2845
2846 static int init_input_threads(void)
2847 {
2848     int i, ret;
2849
2850     if (nb_input_files == 1)
2851         return 0;
2852
2853     for (i = 0; i < nb_input_files; i++) {
2854         InputFile *f = input_files[i];
2855
2856         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2857             return AVERROR(ENOMEM);
2858
2859         pthread_mutex_init(&f->fifo_lock, NULL);
2860         pthread_cond_init (&f->fifo_cond, NULL);
2861
2862         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2863             return AVERROR(ret);
2864     }
2865     return 0;
2866 }
2867
2868 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2869 {
2870     int ret = 0;
2871
2872     pthread_mutex_lock(&f->fifo_lock);
2873
2874     if (av_fifo_size(f->fifo)) {
2875         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2876         pthread_cond_signal(&f->fifo_cond);
2877     } else {
2878         if (f->finished)
2879             ret = AVERROR_EOF;
2880         else
2881             ret = AVERROR(EAGAIN);
2882     }
2883
2884     pthread_mutex_unlock(&f->fifo_lock);
2885
2886     return ret;
2887 }
2888 #endif
2889
2890 static int get_input_packet(InputFile *f, AVPacket *pkt)
2891 {
2892     if (f->rate_emu) {
2893         int i;
2894         for (i = 0; i < f->nb_streams; i++) {
2895             InputStream *ist = input_streams[f->ist_index + i];
2896             int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
2897             int64_t now = av_gettime() - ist->start;
2898             if (pts > now)
2899                 return AVERROR(EAGAIN);
2900         }
2901     }
2902
2903 #if HAVE_PTHREADS
2904     if (nb_input_files > 1)
2905         return get_input_packet_mt(f, pkt);
2906 #endif
2907     return av_read_frame(f->ctx, pkt);
2908 }
2909
2910 static int got_eagain(void)
2911 {
2912     int i;
2913     for (i = 0; i < nb_output_streams; i++)
2914         if (output_streams[i]->unavailable)
2915             return 1;
2916     return 0;
2917 }
2918
2919 static void reset_eagain(void)
2920 {
2921     int i;
2922     for (i = 0; i < nb_input_files; i++)
2923         input_files[i]->eagain = 0;
2924     for (i = 0; i < nb_output_streams; i++)
2925         output_streams[i]->unavailable = 0;
2926 }
2927
2928 /*
2929  * Return
2930  * - 0 -- one packet was read and processed
2931  * - AVERROR(EAGAIN) -- no packets were available for selected file,
2932  *   this function should be called again
2933  * - AVERROR_EOF -- this function should not be called again
2934  */
2935 static int process_input(int file_index)
2936 {
2937     InputFile *ifile = input_files[file_index];
2938     AVFormatContext *is;
2939     InputStream *ist;
2940     AVPacket pkt;
2941     int ret, i, j;
2942
2943     is  = ifile->ctx;
2944     ret = get_input_packet(ifile, &pkt);
2945
2946     if (ret == AVERROR(EAGAIN)) {
2947         ifile->eagain = 1;
2948         return ret;
2949     }
2950     if (ret < 0) {
2951         if (ret != AVERROR_EOF) {
2952             print_error(is->filename, ret);
2953             if (exit_on_error)
2954                 exit_program(1);
2955         }
2956         ifile->eof_reached = 1;
2957
2958         for (i = 0; i < ifile->nb_streams; i++) {
2959             ist = input_streams[ifile->ist_index + i];
2960             if (ist->decoding_needed)
2961                 output_packet(ist, NULL);
2962
2963             /* mark all outputs that don't go through lavfi as finished */
2964             for (j = 0; j < nb_output_streams; j++) {
2965                 OutputStream *ost = output_streams[j];
2966
2967                 if (ost->source_index == ifile->ist_index + i &&
2968                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2969                     close_output_stream(ost);
2970             }
2971         }
2972
2973         return AVERROR(EAGAIN);
2974     }
2975
2976     reset_eagain();
2977
2978     if (do_pkt_dump) {
2979         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2980                          is->streams[pkt.stream_index]);
2981     }
2982     /* the following test is needed in case new streams appear
2983        dynamically in stream : we ignore them */
2984     if (pkt.stream_index >= ifile->nb_streams) {
2985         report_new_stream(file_index, &pkt);
2986         goto discard_packet;
2987     }
2988
2989     ist = input_streams[ifile->ist_index + pkt.stream_index];
2990     if (ist->discard)
2991         goto discard_packet;
2992
2993     if (debug_ts) {
2994         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
2995                "next_dts:%s next_dts_time:%s next_pts:%s next_pts_time:%s pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%s off_time:%s\n",
2996                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2997                av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
2998                av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
2999                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3000                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3001                av_ts2str(input_files[ist->file_index]->ts_offset),
3002                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3003     }
3004
3005     if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
3006         int64_t stime, stime2;
3007         // Correcting starttime based on the enabled streams
3008         // FIXME this ideally should be done before the first use of starttime but we do not know which are the enabled streams at that point.
3009         //       so we instead do it here as part of discontinuity handling
3010         if (   ist->next_dts == AV_NOPTS_VALUE
3011             && ifile->ts_offset == -is->start_time
3012             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
3013             int64_t new_start_time = INT64_MAX;
3014             for (i=0; i<is->nb_streams; i++) {
3015                 AVStream *st = is->streams[i];
3016                 if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
3017                     continue;
3018                 new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
3019             }
3020             if (new_start_time > is->start_time) {
3021                 av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
3022                 ifile->ts_offset = -new_start_time;
3023             }
3024         }
3025
3026         stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
3027         stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
3028         ist->wrap_correction_done = 1;
3029
3030         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
3031             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
3032             ist->wrap_correction_done = 0;
3033         }
3034         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
3035             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
3036             ist->wrap_correction_done = 0;
3037         }
3038     }
3039
3040     if (pkt.dts != AV_NOPTS_VALUE)
3041         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3042     if (pkt.pts != AV_NOPTS_VALUE)
3043         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3044
3045     if (pkt.pts != AV_NOPTS_VALUE)
3046         pkt.pts *= ist->ts_scale;
3047     if (pkt.dts != AV_NOPTS_VALUE)
3048         pkt.dts *= ist->ts_scale;
3049
3050     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts == AV_NOPTS_VALUE && !copy_ts
3051         && (is->iformat->flags & AVFMT_TS_DISCONT) && ifile->last_ts != AV_NOPTS_VALUE) {
3052         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3053         int64_t delta   = pkt_dts - ifile->last_ts;
3054         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3055             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3056                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)){
3057             ifile->ts_offset -= delta;
3058             av_log(NULL, AV_LOG_DEBUG,
3059                    "Inter stream timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3060                    delta, ifile->ts_offset);
3061             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3062             if (pkt.pts != AV_NOPTS_VALUE)
3063                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3064         }
3065     }
3066
3067     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
3068         !copy_ts) {
3069         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3070         int64_t delta   = pkt_dts - ist->next_dts;
3071         if (is->iformat->flags & AVFMT_TS_DISCONT) {
3072         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3073             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3074                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3075             pkt_dts + AV_TIME_BASE/10 < ist->pts){
3076             ifile->ts_offset -= delta;
3077             av_log(NULL, AV_LOG_DEBUG,
3078                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3079                    delta, ifile->ts_offset);
3080             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3081             if (pkt.pts != AV_NOPTS_VALUE)
3082                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3083         }
3084         } else {
3085             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3086                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
3087                ) {
3088                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3089                 pkt.dts = AV_NOPTS_VALUE;
3090             }
3091             if (pkt.pts != AV_NOPTS_VALUE){
3092                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3093                 delta   = pkt_pts - ist->next_dts;
3094                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3095                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
3096                    ) {
3097                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3098                     pkt.pts = AV_NOPTS_VALUE;
3099                 }
3100             }
3101         }
3102     }
3103
3104     if (pkt.dts != AV_NOPTS_VALUE)
3105         ifile->last_ts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3106
3107     if (debug_ts) {
3108         av_log(NULL, AV_LOG_INFO, "demuxer+ffmpeg -> ist_index:%d type:%s pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%s off_time:%s\n",
3109                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
3110                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3111                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3112                av_ts2str(input_files[ist->file_index]->ts_offset),
3113                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3114     }
3115
3116     sub2video_heartbeat(ist, pkt.pts);
3117
3118     ret = output_packet(ist, &pkt);
3119     if (ret < 0) {
3120         char buf[128];
3121         av_strerror(ret, buf, sizeof(buf));
3122         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
3123                 ist->file_index, ist->st->index, buf);
3124         if (exit_on_error)
3125             exit_program(1);
3126     }
3127
3128 discard_packet:
3129     av_free_packet(&pkt);
3130
3131     return 0;
3132 }
3133
3134 /**
3135  * Perform a step of transcoding for the specified filter graph.
3136  *
3137  * @param[in]  graph     filter graph to consider
3138  * @param[out] best_ist  input stream where a frame would allow to continue
3139  * @return  0 for success, <0 for error
3140  */
3141 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
3142 {
3143     int i, ret;
3144     int nb_requests, nb_requests_max = 0;
3145     InputFilter *ifilter;
3146     InputStream *ist;
3147
3148     *best_ist = NULL;
3149     ret = avfilter_graph_request_oldest(graph->graph);
3150     if (ret >= 0)
3151         return reap_filters();
3152
3153     if (ret == AVERROR_EOF) {
3154         ret = reap_filters();
3155         for (i = 0; i < graph->nb_outputs; i++)
3156             close_output_stream(graph->outputs[i]->ost);
3157         return ret;
3158     }
3159     if (ret != AVERROR(EAGAIN))
3160         return ret;
3161
3162     for (i = 0; i < graph->nb_inputs; i++) {
3163         ifilter = graph->inputs[i];
3164         ist = ifilter->ist;
3165         if (input_files[ist->file_index]->eagain ||
3166             input_files[ist->file_index]->eof_reached)
3167             continue;
3168         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
3169         if (nb_requests > nb_requests_max) {
3170             nb_requests_max = nb_requests;
3171             *best_ist = ist;
3172         }
3173     }
3174
3175     if (!*best_ist)
3176         for (i = 0; i < graph->nb_outputs; i++)
3177             graph->outputs[i]->ost->unavailable = 1;
3178
3179     return 0;
3180 }
3181
3182 /**
3183  * Run a single step of transcoding.
3184  *
3185  * @return  0 for success, <0 for error
3186  */
3187 static int transcode_step(void)
3188 {
3189     OutputStream *ost;
3190     InputStream  *ist;
3191     int ret;
3192
3193     ost = choose_output();
3194     if (!ost) {
3195         if (got_eagain()) {
3196             reset_eagain();
3197             av_usleep(10000);
3198             return 0;
3199         }
3200         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
3201         return AVERROR_EOF;
3202     }
3203
3204     if (ost->filter) {
3205         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
3206             return ret;
3207         if (!ist)
3208             return 0;
3209     } else {
3210         av_assert0(ost->source_index >= 0);
3211         ist = input_streams[ost->source_index];
3212     }
3213
3214     ret = process_input(ist->file_index);
3215     if (ret == AVERROR(EAGAIN)) {
3216         if (input_files[ist->file_index]->eagain)
3217             ost->unavailable = 1;
3218         return 0;
3219     }
3220     if (ret < 0)
3221         return ret == AVERROR_EOF ? 0 : ret;
3222
3223     return reap_filters();
3224 }
3225
3226 /*
3227  * The following code is the main loop of the file converter
3228  */
3229 static int transcode(void)
3230 {
3231     int ret, i;
3232     AVFormatContext *os;
3233     OutputStream *ost;
3234     InputStream *ist;
3235     int64_t timer_start;
3236
3237     ret = transcode_init();
3238     if (ret < 0)
3239         goto fail;
3240
3241     if (stdin_interaction) {
3242         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3243     }
3244
3245     timer_start = av_gettime();
3246
3247 #if HAVE_PTHREADS
3248     if ((ret = init_input_threads()) < 0)
3249         goto fail;
3250 #endif
3251
3252     while (!received_sigterm) {
3253         int64_t cur_time= av_gettime();
3254
3255         /* if 'q' pressed, exits */
3256         if (stdin_interaction)
3257             if (check_keyboard_interaction(cur_time) < 0)
3258                 break;
3259
3260         /* check if there's any stream where output is still needed */
3261         if (!need_output()) {
3262             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3263             break;
3264         }
3265
3266         ret = transcode_step();
3267         if (ret < 0) {
3268             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
3269                 continue;
3270
3271             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
3272             break;
3273         }
3274
3275         /* dump report by using the output first video and audio streams */
3276         print_report(0, timer_start, cur_time);
3277     }
3278 #if HAVE_PTHREADS
3279     free_input_threads();
3280 #endif
3281
3282     /* at the end of stream, we must flush the decoder buffers */
3283     for (i = 0; i < nb_input_streams; i++) {
3284         ist = input_streams[i];
3285         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3286             output_packet(ist, NULL);
3287         }
3288     }
3289     flush_encoders();
3290
3291     term_exit();
3292
3293     /* write the trailer if needed and close file */
3294     for (i = 0; i < nb_output_files; i++) {
3295         os = output_files[i]->ctx;
3296         av_write_trailer(os);
3297     }
3298
3299     /* dump report by using the first video and audio streams */
3300     print_report(1, timer_start, av_gettime());
3301
3302     /* close each encoder */
3303     for (i = 0; i < nb_output_streams; i++) {
3304         ost = output_streams[i];
3305         if (ost->encoding_needed) {
3306             av_freep(&ost->st->codec->stats_in);
3307             avcodec_close(ost->st->codec);
3308         }
3309     }
3310
3311     /* close each decoder */
3312     for (i = 0; i < nb_input_streams; i++) {
3313         ist = input_streams[i];
3314         if (ist->decoding_needed) {
3315             avcodec_close(ist->st->codec);
3316         }
3317     }
3318
3319     /* finished ! */
3320     ret = 0;
3321
3322  fail:
3323 #if HAVE_PTHREADS
3324     free_input_threads();
3325 #endif
3326
3327     if (output_streams) {
3328         for (i = 0; i < nb_output_streams; i++) {
3329             ost = output_streams[i];
3330             if (ost) {
3331                 if (ost->stream_copy)
3332                     av_freep(&ost->st->codec->extradata);
3333                 if (ost->logfile) {
3334                     fclose(ost->logfile);
3335                     ost->logfile = NULL;
3336                 }
3337                 av_freep(&ost->st->codec->subtitle_header);
3338                 av_freep(&ost->forced_kf_pts);
3339                 av_freep(&ost->apad);
3340                 av_dict_free(&ost->opts);
3341                 av_dict_free(&ost->swr_opts);
3342                 av_dict_free(&ost->resample_opts);
3343             }
3344         }
3345     }
3346     return ret;
3347 }
3348
3349
3350 static int64_t getutime(void)
3351 {
3352 #if HAVE_GETRUSAGE
3353     struct rusage rusage;
3354
3355     getrusage(RUSAGE_SELF, &rusage);
3356     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3357 #elif HAVE_GETPROCESSTIMES
3358     HANDLE proc;
3359     FILETIME c, e, k, u;
3360     proc = GetCurrentProcess();
3361     GetProcessTimes(proc, &c, &e, &k, &u);
3362     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3363 #else
3364     return av_gettime();
3365 #endif
3366 }
3367
3368 static int64_t getmaxrss(void)
3369 {
3370 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3371     struct rusage rusage;
3372     getrusage(RUSAGE_SELF, &rusage);
3373     return (int64_t)rusage.ru_maxrss * 1024;
3374 #elif HAVE_GETPROCESSMEMORYINFO
3375     HANDLE proc;
3376     PROCESS_MEMORY_COUNTERS memcounters;
3377     proc = GetCurrentProcess();
3378     memcounters.cb = sizeof(memcounters);
3379     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3380     return memcounters.PeakPagefileUsage;
3381 #else
3382     return 0;
3383 #endif
3384 }
3385
3386 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3387 {
3388 }
3389
3390 int main(int argc, char **argv)
3391 {
3392     int ret;
3393     int64_t ti;
3394
3395     register_exit(ffmpeg_cleanup);
3396
3397     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3398
3399     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3400     parse_loglevel(argc, argv, options);
3401
3402     if(argc>1 && !strcmp(argv[1], "-d")){
3403         run_as_daemon=1;
3404         av_log_set_callback(log_callback_null);
3405         argc--;
3406         argv++;
3407     }
3408
3409     avcodec_register_all();
3410 #if CONFIG_AVDEVICE
3411     avdevice_register_all();
3412 #endif
3413     avfilter_register_all();
3414     av_register_all();
3415     avformat_network_init();
3416
3417     show_banner(argc, argv, options);
3418
3419     term_init();
3420
3421     /* parse options and open all input/output files */
3422     ret = ffmpeg_parse_options(argc, argv);
3423     if (ret < 0)
3424         exit_program(1);
3425
3426     if (nb_output_files <= 0 && nb_input_files == 0) {
3427         show_usage();
3428         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3429         exit_program(1);
3430     }
3431
3432     /* file converter / grab */
3433     if (nb_output_files <= 0) {
3434         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3435         exit_program(1);
3436     }
3437
3438 //     if (nb_input_files == 0) {
3439 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3440 //         exit_program(1);
3441 //     }
3442
3443     current_time = ti = getutime();
3444     if (transcode() < 0)
3445         exit_program(1);
3446     ti = getutime() - ti;
3447     if (do_benchmark) {
3448         printf("bench: utime=%0.3fs\n", ti / 1000000.0);
3449     }
3450     av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" frames successfully decoded, %"PRIu64" decoding errors\n",
3451            decode_error_stat[0], decode_error_stat[1]);
3452     if ((decode_error_stat[0] + decode_error_stat[1]) * max_error_rate < decode_error_stat[1])
3453         exit_program(69);
3454
3455     exit_program(received_nb_signals ? 255 : 0);
3456     return 0;
3457 }