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