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/channel_layout.h"
  47 #include "libavutil/parseutils.h"
  48 #include "libavutil/samplefmt.h"
  49 #include "libavutil/colorspace.h"
  50 #include "libavutil/fifo.h"
  51 #include "libavutil/intreadwrite.h"
  52 #include "libavutil/dict.h"
  53 #include "libavutil/mathematics.h"
  54 #include "libavutil/pixdesc.h"
  55 #include "libavutil/avstring.h"
  56 #include "libavutil/libm.h"
  57 #include "libavutil/imgutils.h"
  58 #include "libavutil/timestamp.h"
  59 #include "libavutil/bprint.h"
  60 #include "libavutil/time.h"
  61 #include "libavformat/os_support.h"
  62
  63 #include "libavformat/ffm.h" // not public API
  64
  65 # include "libavfilter/avcodec.h"
  66 # include "libavfilter/avfilter.h"
  67 # include "libavfilter/avfiltergraph.h"
  68 # include "libavfilter/buffersrc.h"
  69 # include "libavfilter/buffersink.h"
  70
  71 #if HAVE_SYS_RESOURCE_H
  72 #include <sys/time.h>
  73 #include <sys/types.h>
  74 #include <sys/resource.h>
  75 #elif HAVE_GETPROCESSTIMES
  76 #include <windows.h>
  77 #endif
  78 #if HAVE_GETPROCESSMEMORYINFO
  79 #include <windows.h>
  80 #include <psapi.h>
  81 #endif
  82
  83 #if HAVE_SYS_SELECT_H
  84 #include <sys/select.h>
  85 #endif
  86
  87 #if HAVE_TERMIOS_H
  88 #include <fcntl.h>
  89 #include <sys/ioctl.h>
  90 #include <sys/time.h>
  91 #include <termios.h>
  92 #elif HAVE_KBHIT
  93 #include <conio.h>
  94 #endif
  95
  96 #if HAVE_PTHREADS
  97 #include <pthread.h>
  98 #endif
  99
 100 #include <time.h>
 101
 102 #include "ffmpeg.h"
 103 #include "cmdutils.h"
 104
 105 #include "libavutil/avassert.h"
 106
 107 const char program_name[] = "ffmpeg";
 108 const int program_birth_year = 2000;
 109
 110 static FILE *vstats_file;
 111
 112 static void do_video_stats(OutputStream *ost, int frame_size);
 113 static int64_t getutime(void);
 114
 115 static int run_as_daemon  = 0;
 116 static int64_t video_size = 0;
 117 static int64_t audio_size = 0;
 118 static int64_t subtitle_size = 0;
 119 static int64_t extra_size = 0;
 120 static int nb_frames_dup = 0;
 121 static int nb_frames_drop = 0;
 122
 123 static int current_time;
 124 AVIOContext *progress_avio = NULL;
 125
 126 static uint8_t *subtitle_out;
 127
 128 #if HAVE_PTHREADS
 129 /* signal to input threads that they should exit; set by the main thread */
 130 static int transcoding_finished;
 131 #endif
 132
 133 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
 134
 135 InputStream **input_streams = NULL;
 136 int        nb_input_streams = 0;
 137 InputFile   **input_files   = NULL;
 138 int        nb_input_files   = 0;
 139
 140 OutputStream **output_streams = NULL;
 141 int         nb_output_streams = 0;
 142 OutputFile   **output_files   = NULL;
 143 int         nb_output_files   = 0;
 144
 145 FilterGraph **filtergraphs;
 146 int        nb_filtergraphs;
 147
 148 #if HAVE_TERMIOS_H
 149
 150 /* init terminal so that we can grab keys */
 151 static struct termios oldtty;
 152 static int restore_tty;
 153 #endif
 154
 155
 156 /* sub2video hack:
 157    Convert subtitles to video with alpha to insert them in filter graphs.
 158    This is a temporary solution until libavfilter gets real subtitles support.
 159  */
 160
 161
 162
 163 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
 164                                 AVSubtitleRect *r)
 165 {
 166     uint32_t *pal, *dst2;
 167     uint8_t *src, *src2;
 168     int x, y;
 169
 170     if (r->type != SUBTITLE_BITMAP) {
 171         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
 172         return;
 173     }
 174     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
 175         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
 176         return;
 177     }
 178
 179     dst += r->y * dst_linesize + r->x * 4;
 180     src = r->pict.data[0];
 181     pal = (uint32_t *)r->pict.data[1];
 182     for (y = 0; y < r->h; y++) {
 183         dst2 = (uint32_t *)dst;
 184         src2 = src;
 185         for (x = 0; x < r->w; x++)
 186             *(dst2++) = pal[*(src2++)];
 187         dst += dst_linesize;
 188         src += r->pict.linesize[0];
 189     }
 190 }
 191
 192 static void sub2video_push_ref(InputStream *ist, int64_t pts)
 193 {
 194     AVFilterBufferRef *ref = ist->sub2video.ref;
 195     int i;
 196
 197     ist->sub2video.last_pts = ref->pts = pts;
 198     for (i = 0; i < ist->nb_filters; i++)
 199         av_buffersrc_add_ref(ist->filters[i]->filter,
 200                              avfilter_ref_buffer(ref, ~0),
 201                              AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
 202                              AV_BUFFERSRC_FLAG_NO_COPY |
 203                              AV_BUFFERSRC_FLAG_PUSH);
 204 }
 205
 206 static void sub2video_update(InputStream *ist, AVSubtitle *sub)
 207 {
 208     int w = ist->sub2video.w, h = ist->sub2video.h;
 209     AVFilterBufferRef *ref = ist->sub2video.ref;
 210     int8_t *dst;
 211     int     dst_linesize;
 212     int num_rects, i;
 213     int64_t pts, end_pts;
 214
 215     if (!ref)
 216         return;
 217     if (sub) {
 218         pts       = av_rescale_q(sub->pts + sub->start_display_time * 1000,
 219                                  AV_TIME_BASE_Q, ist->st->time_base);
 220         end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000,
 221                                  AV_TIME_BASE_Q, ist->st->time_base);
 222         num_rects = sub->num_rects;
 223     } else {
 224         pts       = ist->sub2video.end_pts;
 225         end_pts   = INT64_MAX;
 226         num_rects = 0;
 227     }
 228     dst          = ref->data    [0];
 229     dst_linesize = ref->linesize[0];
 230     memset(dst, 0, h * dst_linesize);
 231     for (i = 0; i < num_rects; i++)
 232         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
 233     sub2video_push_ref(ist, pts);
 234     ist->sub2video.end_pts = end_pts;
 235 }
 236
 237 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
 238 {
 239     InputFile *infile = input_files[ist->file_index];
 240     int i, j, nb_reqs;
 241     int64_t pts2;
 242
 243     /* When a frame is read from a file, examine all sub2video streams in
 244        the same file and send the sub2video frame again. Otherwise, decoded
 245        video frames could be accumulating in the filter graph while a filter
 246        (possibly overlay) is desperately waiting for a subtitle frame. */
 247     for (i = 0; i < infile->nb_streams; i++) {
 248         InputStream *ist2 = input_streams[infile->ist_index + i];
 249         if (!ist2->sub2video.ref)
 250             continue;
 251         /* subtitles seem to be usually muxed ahead of other streams;
 252            if not, substracting a larger time here is necessary */
 253         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
 254         /* do not send the heartbeat frame if the subtitle is already ahead */
 255         if (pts2 <= ist2->sub2video.last_pts)
 256             continue;
 257         if (pts2 >= ist2->sub2video.end_pts)
 258             sub2video_update(ist2, NULL);
 259         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
 260             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
 261         if (nb_reqs)
 262             sub2video_push_ref(ist2, pts2);
 263     }
 264 }
 265
 266 static void sub2video_flush(InputStream *ist)
 267 {
 268     int i;
 269
 270     for (i = 0; i < ist->nb_filters; i++)
 271         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
 272 }
 273
 274 /* end of sub2video hack */
 275
 276 void term_exit(void)
 277 {
 278     av_log(NULL, AV_LOG_QUIET, "%s", "");
 279 #if HAVE_TERMIOS_H
 280     if(restore_tty)
 281         tcsetattr (0, TCSANOW, &oldtty);
 282 #endif
 283 }
 284
 285 static volatile int received_sigterm = 0;
 286 static volatile int received_nb_signals = 0;
 287
 288 static void
 289 sigterm_handler(int sig)
 290 {
 291     received_sigterm = sig;
 292     received_nb_signals++;
 293     term_exit();
 294     if(received_nb_signals > 3)
 295         exit(123);
 296 }
 297
 298 void term_init(void)
 299 {
 300 #if HAVE_TERMIOS_H
 301     if(!run_as_daemon){
 302         struct termios tty;
 303         int istty = 1;
 304 #if HAVE_ISATTY
 305         istty = isatty(0) && isatty(2);
 306 #endif
 307         if (istty && tcgetattr (0, &tty) == 0) {
 308             oldtty = tty;
 309             restore_tty = 1;
 310             atexit(term_exit);
 311
 312             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
 313                              |INLCR|IGNCR|ICRNL|IXON);
 314             tty.c_oflag |= OPOST;
 315             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
 316             tty.c_cflag &= ~(CSIZE|PARENB);
 317             tty.c_cflag |= CS8;
 318             tty.c_cc[VMIN] = 1;
 319             tty.c_cc[VTIME] = 0;
 320
 321             tcsetattr (0, TCSANOW, &tty);
 322         }
 323         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
 324     }
 325 #endif
 326     avformat_network_deinit();
 327
 328     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
 329     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
 330 #ifdef SIGXCPU
 331     signal(SIGXCPU, sigterm_handler);
 332 #endif
 333 }
 334
 335 /* read a key without blocking */
 336 static int read_key(void)
 337 {
 338     unsigned char ch;
 339 #if HAVE_TERMIOS_H
 340     int n = 1;
 341     struct timeval tv;
 342     fd_set rfds;
 343
 344     FD_ZERO(&rfds);
 345     FD_SET(0, &rfds);
 346     tv.tv_sec = 0;
 347     tv.tv_usec = 0;
 348     n = select(1, &rfds, NULL, NULL, &tv);
 349     if (n > 0) {
 350         n = read(0, &ch, 1);
 351         if (n == 1)
 352             return ch;
 353
 354         return n;
 355     }
 356 #elif HAVE_KBHIT
 357 #    if HAVE_PEEKNAMEDPIPE
 358     static int is_pipe;
 359     static HANDLE input_handle;
 360     DWORD dw, nchars;
 361     if(!input_handle){
 362         input_handle = GetStdHandle(STD_INPUT_HANDLE);
 363         is_pipe = !GetConsoleMode(input_handle, &dw);
 364     }
 365
 366     if (stdin->_cnt > 0) {
 367         read(0, &ch, 1);
 368         return ch;
 369     }
 370     if (is_pipe) {
 371         /* When running under a GUI, you will end here. */
 372         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
 373             return -1;
 374         //Read it
 375         if(nchars != 0) {
 376             read(0, &ch, 1);
 377             return ch;
 378         }else{
 379             return -1;
 380         }
 381     }
 382 #    endif
 383     if(kbhit())
 384         return(getch());
 385 #endif
 386     return -1;
 387 }
 388
 389 static int decode_interrupt_cb(void *ctx)
 390 {
 391     return received_nb_signals > 1;
 392 }
 393
 394 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
 395
 396 static void exit_program(void)
 397 {
 398     int i, j;
 399
 400     for (i = 0; i < nb_filtergraphs; i++) {
 401         avfilter_graph_free(&filtergraphs[i]->graph);
 402         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
 403             av_freep(&filtergraphs[i]->inputs[j]->name);
 404             av_freep(&filtergraphs[i]->inputs[j]);
 405         }
 406         av_freep(&filtergraphs[i]->inputs);
 407         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
 408             av_freep(&filtergraphs[i]->outputs[j]->name);
 409             av_freep(&filtergraphs[i]->outputs[j]);
 410         }
 411         av_freep(&filtergraphs[i]->outputs);
 412         av_freep(&filtergraphs[i]);
 413     }
 414     av_freep(&filtergraphs);
 415
 416     av_freep(&subtitle_out);
 417
 418     /* close files */
 419     for (i = 0; i < nb_output_files; i++) {
 420         AVFormatContext *s = output_files[i]->ctx;
 421         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
 422             avio_close(s->pb);
 423         avformat_free_context(s);
 424         av_dict_free(&output_files[i]->opts);
 425         av_freep(&output_files[i]);
 426     }
 427     for (i = 0; i < nb_output_streams; i++) {
 428         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
 429         while (bsfc) {
 430             AVBitStreamFilterContext *next = bsfc->next;
 431             av_bitstream_filter_close(bsfc);
 432             bsfc = next;
 433         }
 434         output_streams[i]->bitstream_filters = NULL;
 435         avcodec_free_frame(&output_streams[i]->filtered_frame);
 436
 437         av_freep(&output_streams[i]->forced_keyframes);
 438         av_freep(&output_streams[i]->avfilter);
 439         av_freep(&output_streams[i]->logfile_prefix);
 440         av_freep(&output_streams[i]);
 441     }
 442     for (i = 0; i < nb_input_files; i++) {
 443         avformat_close_input(&input_files[i]->ctx);
 444         av_freep(&input_files[i]);
 445     }
 446     for (i = 0; i < nb_input_streams; i++) {
 447         avcodec_free_frame(&input_streams[i]->decoded_frame);
 448         av_dict_free(&input_streams[i]->opts);
 449         free_buffer_pool(&input_streams[i]->buffer_pool);
 450         avfilter_unref_bufferp(&input_streams[i]->sub2video.ref);
 451         av_freep(&input_streams[i]->filters);
 452         av_freep(&input_streams[i]);
 453     }
 454
 455     if (vstats_file)
 456         fclose(vstats_file);
 457     av_free(vstats_filename);
 458
 459     av_freep(&input_streams);
 460     av_freep(&input_files);
 461     av_freep(&output_streams);
 462     av_freep(&output_files);
 463
 464     uninit_opts();
 465
 466     avfilter_uninit();
 467     avformat_network_deinit();
 468
 469     if (received_sigterm) {
 470         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
 471                (int) received_sigterm);
 472         exit (255);
 473     }
 474 }
 475
 476 void assert_avoptions(AVDictionary *m)
 477 {
 478     AVDictionaryEntry *t;
 479     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
 480         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
 481         exit(1);
 482     }
 483 }
 484
 485 static void abort_codec_experimental(AVCodec *c, int encoder)
 486 {
 487     exit(1);
 488 }
 489
 490 static void update_benchmark(const char *fmt, ...)
 491 {
 492     if (do_benchmark_all) {
 493         int64_t t = getutime();
 494         va_list va;
 495         char buf[1024];
 496
 497         if (fmt) {
 498             va_start(va, fmt);
 499             vsnprintf(buf, sizeof(buf), fmt, va);
 500             va_end(va);
 501             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
 502         }
 503         current_time = t;
 504     }
 505 }
 506
 507 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
 508 {
 509     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
 510     AVCodecContext          *avctx = ost->st->codec;
 511     int ret;
 512
 513     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
 514         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
 515         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
 516
 517     if ((avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) && pkt->dts != AV_NOPTS_VALUE) {
 518         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
 519         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
 520             av_log(s, max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG,
 521                    "st:%d PTS: %"PRId64" DTS: %"PRId64" < %"PRId64" invalid, clipping\n", pkt->stream_index, pkt->pts, pkt->dts, max);
 522             if(pkt->pts >= pkt->dts)
 523                 pkt->pts = FFMAX(pkt->pts, max);
 524             pkt->dts = max;
 525         }
 526     }
 527
 528     /*
 529      * Audio encoders may split the packets --  #frames in != #packets out.
 530      * But there is no reordering, so we can limit the number of output packets
 531      * by simply dropping them here.
 532      * Counting encoded video frames needs to be done separately because of
 533      * reordering, see do_video_out()
 534      */
 535     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
 536         if (ost->frame_number >= ost->max_frames) {
 537             av_free_packet(pkt);
 538             return;
 539         }
 540         ost->frame_number++;
 541     }
 542
 543     while (bsfc) {
 544         AVPacket new_pkt = *pkt;
 545         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
 546                                            &new_pkt.data, &new_pkt.size,
 547                                            pkt->data, pkt->size,
 548                                            pkt->flags & AV_PKT_FLAG_KEY);
 549         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
 550             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
 551             if(t) {
 552                 memcpy(t, new_pkt.data, new_pkt.size);
 553                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
 554                 new_pkt.data = t;
 555                 a = 1;
 556             } else
 557                 a = AVERROR(ENOMEM);
 558         }
 559         if (a > 0) {
 560             av_free_packet(pkt);
 561             new_pkt.destruct = av_destruct_packet;
 562         } else if (a < 0) {
 563             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
 564                    bsfc->filter->name, pkt->stream_index,
 565                    avctx->codec ? avctx->codec->name : "copy");
 566             print_error("", a);
 567             if (exit_on_error)
 568                 exit(1);
 569         }
 570         *pkt = new_pkt;
 571
 572         bsfc = bsfc->next;
 573     }
 574
 575     pkt->stream_index = ost->index;
 576
 577     if (debug_ts) {
 578         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
 579                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
 580                 av_get_media_type_string(ost->st->codec->codec_type),
 581                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
 582                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
 583                 pkt->size
 584               );
 585     }
 586
 587     ret = av_interleaved_write_frame(s, pkt);
 588     if (ret < 0) {
 589         print_error("av_interleaved_write_frame()", ret);
 590         exit(1);
 591     }
 592 }
 593
 594 static void close_output_stream(OutputStream *ost)
 595 {
 596     OutputFile *of = output_files[ost->file_index];
 597
 598     ost->finished = 1;
 599     if (of->shortest) {
 600         int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, AV_TIME_BASE_Q);
 601         of->recording_time = FFMIN(of->recording_time, end);
 602     }
 603 }
 604
 605 static int check_recording_time(OutputStream *ost)
 606 {
 607     OutputFile *of = output_files[ost->file_index];
 608
 609     if (of->recording_time != INT64_MAX &&
 610         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
 611                       AV_TIME_BASE_Q) >= 0) {
 612         close_output_stream(ost);
 613         return 0;
 614     }
 615     return 1;
 616 }
 617
 618 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
 619                          AVFrame *frame)
 620 {
 621     AVCodecContext *enc = ost->st->codec;
 622     AVPacket pkt;
 623     int got_packet = 0;
 624
 625     av_init_packet(&pkt);
 626     pkt.data = NULL;
 627     pkt.size = 0;
 628
 629     if (!check_recording_time(ost))
 630         return;
 631
 632     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
 633         frame->pts = ost->sync_opts;
 634     ost->sync_opts = frame->pts + frame->nb_samples;
 635
 636     av_assert0(pkt.size || !pkt.data);
 637     update_benchmark(NULL);
 638     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
 639         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
 640         exit(1);
 641     }
 642     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
 643
 644     if (got_packet) {
 645         if (pkt.pts != AV_NOPTS_VALUE)
 646             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
 647         if (pkt.dts != AV_NOPTS_VALUE)
 648             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
 649         if (pkt.duration > 0)
 650             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
 651
 652         if (debug_ts) {
 653             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
 654                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
 655                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
 656                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
 657         }
 658
 659         audio_size += pkt.size;
 660         write_frame(s, &pkt, ost);
 661
 662         av_free_packet(&pkt);
 663     }
 664 }
 665
 666 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
 667 {
 668     AVCodecContext *dec;
 669     AVPicture *picture2;
 670     AVPicture picture_tmp;
 671     uint8_t *buf = 0;
 672
 673     dec = ist->st->codec;
 674
 675     /* deinterlace : must be done before any resize */
 676     if (do_deinterlace) {
 677         int size;
 678
 679         /* create temporary picture */
 680         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
 681         if (size < 0)
 682             return;
 683         buf  = av_malloc(size);
 684         if (!buf)
 685             return;
 686
 687         picture2 = &picture_tmp;
 688         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
 689
 690         if (avpicture_deinterlace(picture2, picture,
 691                                  dec->pix_fmt, dec->width, dec->height) < 0) {
 692             /* if error, do not deinterlace */
 693             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
 694             av_free(buf);
 695             buf = NULL;
 696             picture2 = picture;
 697         }
 698     } else {
 699         picture2 = picture;
 700     }
 701
 702     if (picture != picture2)
 703         *picture = *picture2;
 704     *bufp = buf;
 705 }
 706
 707 static void do_subtitle_out(AVFormatContext *s,
 708                             OutputStream *ost,
 709                             InputStream *ist,
 710                             AVSubtitle *sub)
 711 {
 712     int subtitle_out_max_size = 1024 * 1024;
 713     int subtitle_out_size, nb, i;
 714     AVCodecContext *enc;
 715     AVPacket pkt;
 716     int64_t pts;
 717
 718     if (sub->pts == AV_NOPTS_VALUE) {
 719         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
 720         if (exit_on_error)
 721             exit(1);
 722         return;
 723     }
 724
 725     enc = ost->st->codec;
 726
 727     if (!subtitle_out) {
 728         subtitle_out = av_malloc(subtitle_out_max_size);
 729     }
 730
 731     /* Note: DVB subtitle need one packet to draw them and one other
 732        packet to clear them */
 733     /* XXX: signal it in the codec context ? */
 734     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
 735         nb = 2;
 736     else
 737         nb = 1;
 738
 739     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
 740     pts = sub->pts - output_files[ost->file_index]->start_time;
 741     for (i = 0; i < nb; i++) {
 742         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
 743         if (!check_recording_time(ost))
 744             return;
 745
 746         sub->pts = pts;
 747         // start_display_time is required to be 0
 748         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
 749         sub->end_display_time  -= sub->start_display_time;
 750         sub->start_display_time = 0;
 751         if (i == 1)
 752             sub->num_rects = 0;
 753         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
 754                                                     subtitle_out_max_size, sub);
 755         if (subtitle_out_size < 0) {
 756             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
 757             exit(1);
 758         }
 759
 760         av_init_packet(&pkt);
 761         pkt.data = subtitle_out;
 762         pkt.size = subtitle_out_size;
 763         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
 764         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
 765         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
 766             /* XXX: the pts correction is handled here. Maybe handling
 767                it in the codec would be better */
 768             if (i == 0)
 769                 pkt.pts += 90 * sub->start_display_time;
 770             else
 771                 pkt.pts += 90 * sub->end_display_time;
 772         }
 773         subtitle_size += pkt.size;
 774         write_frame(s, &pkt, ost);
 775     }
 776 }
 777
 778 static void do_video_out(AVFormatContext *s,
 779                          OutputStream *ost,
 780                          AVFrame *in_picture)
 781 {
 782     int ret, format_video_sync;
 783     AVPacket pkt;
 784     AVCodecContext *enc = ost->st->codec;
 785     int nb_frames, i;
 786     double sync_ipts, delta;
 787     double duration = 0;
 788     int frame_size = 0;
 789     InputStream *ist = NULL;
 790
 791     if (ost->source_index >= 0)
 792         ist = input_streams[ost->source_index];
 793
 794     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
 795         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
 796
 797     sync_ipts = in_picture->pts;
 798     delta = sync_ipts - ost->sync_opts + duration;
 799
 800     /* by default, we output a single frame */
 801     nb_frames = 1;
 802
 803     format_video_sync = video_sync_method;
 804     if (format_video_sync == VSYNC_AUTO)
 805         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
 806
 807     switch (format_video_sync) {
 808     case VSYNC_CFR:
 809         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
 810         if (delta < -1.1)
 811             nb_frames = 0;
 812         else if (delta > 1.1)
 813             nb_frames = lrintf(delta);
 814         break;
 815     case VSYNC_VFR:
 816         if (delta <= -0.6)
 817             nb_frames = 0;
 818         else if (delta > 0.6)
 819             ost->sync_opts = lrint(sync_ipts);
 820         break;
 821     case VSYNC_DROP:
 822     case VSYNC_PASSTHROUGH:
 823         ost->sync_opts = lrint(sync_ipts);
 824         break;
 825     default:
 826         av_assert0(0);
 827     }
 828
 829     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
 830     if (nb_frames == 0) {
 831         nb_frames_drop++;
 832         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
 833         return;
 834     } else if (nb_frames > 1) {
 835         if (nb_frames > dts_error_threshold * 30) {
 836             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
 837             nb_frames_drop++;
 838             return;
 839         }
 840         nb_frames_dup += nb_frames - 1;
 841         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
 842     }
 843
 844   /* duplicates frame if needed */
 845   for (i = 0; i < nb_frames; i++) {
 846     av_init_packet(&pkt);
 847     pkt.data = NULL;
 848     pkt.size = 0;
 849
 850     in_picture->pts = ost->sync_opts;
 851
 852     if (!check_recording_time(ost))
 853         return;
 854
 855     if (s->oformat->flags & AVFMT_RAWPICTURE &&
 856         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
 857         /* raw pictures are written as AVPicture structure to
 858            avoid any copies. We support temporarily the older
 859            method. */
 860         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
 861         enc->coded_frame->top_field_first  = in_picture->top_field_first;
 862         if (enc->coded_frame->interlaced_frame)
 863             enc->field_order = enc->coded_frame->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
 864         else
 865             enc->field_order = AV_FIELD_PROGRESSIVE;
 866         pkt.data   = (uint8_t *)in_picture;
 867         pkt.size   =  sizeof(AVPicture);
 868         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
 869         pkt.flags |= AV_PKT_FLAG_KEY;
 870
 871         video_size += pkt.size;
 872         write_frame(s, &pkt, ost);
 873     } else {
 874         int got_packet;
 875         AVFrame big_picture;
 876
 877         big_picture = *in_picture;
 878         /* better than nothing: use input picture interlaced
 879            settings */
 880         big_picture.interlaced_frame = in_picture->interlaced_frame;
 881         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
 882             if (ost->top_field_first == -1)
 883                 big_picture.top_field_first = in_picture->top_field_first;
 884             else
 885                 big_picture.top_field_first = !!ost->top_field_first;
 886         }
 887
 888         if (big_picture.interlaced_frame) {
 889             if (enc->codec->id == AV_CODEC_ID_MJPEG)
 890                 enc->field_order = big_picture.top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
 891             else
 892                 enc->field_order = big_picture.top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
 893         } else
 894             enc->field_order = AV_FIELD_PROGRESSIVE;
 895
 896         big_picture.quality = ost->st->codec->global_quality;
 897         if (!enc->me_threshold)
 898             big_picture.pict_type = 0;
 899         if (ost->forced_kf_index < ost->forced_kf_count &&
 900             big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
 901             big_picture.pict_type = AV_PICTURE_TYPE_I;
 902             ost->forced_kf_index++;
 903         }
 904         update_benchmark(NULL);
 905         ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
 906         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
 907         if (ret < 0) {
 908             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
 909             exit(1);
 910         }
 911
 912         if (got_packet) {
 913             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
 914                 pkt.pts = ost->sync_opts;
 915
 916             if (pkt.pts != AV_NOPTS_VALUE)
 917                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
 918             if (pkt.dts != AV_NOPTS_VALUE)
 919                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
 920
 921             if (debug_ts) {
 922                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
 923                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
 924                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
 925                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
 926             }
 927
 928             frame_size = pkt.size;
 929             video_size += pkt.size;
 930             write_frame(s, &pkt, ost);
 931             av_free_packet(&pkt);
 932
 933             /* if two pass, output log */
 934             if (ost->logfile && enc->stats_out) {
 935                 fprintf(ost->logfile, "%s", enc->stats_out);
 936             }
 937         }
 938     }
 939     ost->sync_opts++;
 940     /*
 941      * For video, number of frames in == number of packets out.
 942      * But there may be reordering, so we can't throw away frames on encoder
 943      * flush, we need to limit them here, before they go into encoder.
 944      */
 945     ost->frame_number++;
 946   }
 947
 948     if (vstats_filename && frame_size)
 949         do_video_stats(ost, frame_size);
 950 }
 951
 952 static double psnr(double d)
 953 {
 954     return -10.0 * log(d) / log(10.0);
 955 }
 956
 957 static void do_video_stats(OutputStream *ost, int frame_size)
 958 {
 959     AVCodecContext *enc;
 960     int frame_number;
 961     double ti1, bitrate, avg_bitrate;
 962
 963     /* this is executed just the first time do_video_stats is called */
 964     if (!vstats_file) {
 965         vstats_file = fopen(vstats_filename, "w");
 966         if (!vstats_file) {
 967             perror("fopen");
 968             exit(1);
 969         }
 970     }
 971
 972     enc = ost->st->codec;
 973     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
 974         frame_number = ost->st->nb_frames;
 975         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
 976         if (enc->flags&CODEC_FLAG_PSNR)
 977             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
 978
 979         fprintf(vstats_file,"f_size= %6d ", frame_size);
 980         /* compute pts value */
 981         ti1 = ost->st->pts.val * av_q2d(enc->time_base);
 982         if (ti1 < 0.01)
 983             ti1 = 0.01;
 984
 985         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
 986         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
 987         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
 988                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
 989         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
 990     }
 991 }
 992
 993 /**
 994  * Get and encode new output from any of the filtergraphs, without causing
 995  * activity.
 996  *
 997  * @return  0 for success, <0 for severe errors
 998  */
 999 static int reap_filters(void)
1000 {
1001     AVFilterBufferRef *picref;
1002     AVFrame *filtered_frame = NULL;
1003     int i;
1004     int64_t frame_pts;
1005
1006     /* Reap all buffers present in the buffer sinks */
1007     for (i = 0; i < nb_output_streams; i++) {
1008         OutputStream *ost = output_streams[i];
1009         OutputFile    *of = output_files[ost->file_index];
1010         int ret = 0;
1011
1012         if (!ost->filter)
1013             continue;
1014
1015         if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1016             return AVERROR(ENOMEM);
1017         } else
1018             avcodec_get_frame_defaults(ost->filtered_frame);
1019         filtered_frame = ost->filtered_frame;
1020
1021         while (1) {
1022             ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
1023                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1024             if (ret < 0) {
1025                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1026                     char buf[256];
1027                     av_strerror(ret, buf, sizeof(buf));
1028                     av_log(NULL, AV_LOG_WARNING,
1029                            "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
1030                 }
1031                 break;
1032             }
1033             frame_pts = AV_NOPTS_VALUE;
1034             if (picref->pts != AV_NOPTS_VALUE) {
1035                 filtered_frame->pts = frame_pts = av_rescale_q(picref->pts,
1036                                                 ost->filter->filter->inputs[0]->time_base,
1037                                                 ost->st->codec->time_base) -
1038                                     av_rescale_q(of->start_time,
1039                                                 AV_TIME_BASE_Q,
1040                                                 ost->st->codec->time_base);
1041
1042                 if (of->start_time && filtered_frame->pts < 0) {
1043                     avfilter_unref_buffer(picref);
1044                     continue;
1045                 }
1046             }
1047             //if (ost->source_index >= 0)
1048             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1049
1050
1051             switch (ost->filter->filter->inputs[0]->type) {
1052             case AVMEDIA_TYPE_VIDEO:
1053                 avfilter_copy_buf_props(filtered_frame, picref);
1054                 filtered_frame->pts = frame_pts;
1055                 if (!ost->frame_aspect_ratio)
1056                     ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
1057
1058                 do_video_out(of->ctx, ost, filtered_frame);
1059                 break;
1060             case AVMEDIA_TYPE_AUDIO:
1061                 avfilter_copy_buf_props(filtered_frame, picref);
1062                 filtered_frame->pts = frame_pts;
1063                 do_audio_out(of->ctx, ost, filtered_frame);
1064                 break;
1065             default:
1066                 // TODO support subtitle filters
1067                 av_assert0(0);
1068             }
1069
1070             avfilter_unref_buffer(picref);
1071         }
1072     }
1073
1074     return 0;
1075 }
1076
1077 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1078 {
1079     char buf[1024];
1080     AVBPrint buf_script;
1081     OutputStream *ost;
1082     AVFormatContext *oc;
1083     int64_t total_size;
1084     AVCodecContext *enc;
1085     int frame_number, vid, i;
1086     double bitrate;
1087     int64_t pts = INT64_MIN;
1088     static int64_t last_time = -1;
1089     static int qp_histogram[52];
1090     int hours, mins, secs, us;
1091
1092     if (!print_stats && !is_last_report && !progress_avio)
1093         return;
1094
1095     if (!is_last_report) {
1096         if (last_time == -1) {
1097             last_time = cur_time;
1098             return;
1099         }
1100         if ((cur_time - last_time) < 500000)
1101             return;
1102         last_time = cur_time;
1103     }
1104
1105
1106     oc = output_files[0]->ctx;
1107
1108     total_size = avio_size(oc->pb);
1109     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1110         total_size = avio_tell(oc->pb);
1111
1112     buf[0] = '\0';
1113     vid = 0;
1114     av_bprint_init(&buf_script, 0, 1);
1115     for (i = 0; i < nb_output_streams; i++) {
1116         float q = -1;
1117         ost = output_streams[i];
1118         enc = ost->st->codec;
1119         if (!ost->stream_copy && enc->coded_frame)
1120             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1121         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1122             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1123             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1124                        ost->file_index, ost->index, q);
1125         }
1126         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1127             float fps, t = (cur_time-timer_start) / 1000000.0;
1128
1129             frame_number = ost->frame_number;
1130             fps = t > 1 ? frame_number / t : 0;
1131             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1132                      frame_number, fps < 9.95, fps, q);
1133             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1134             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1135             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1136                        ost->file_index, ost->index, q);
1137             if (is_last_report)
1138                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1139             if (qp_hist) {
1140                 int j;
1141                 int qp = lrintf(q);
1142                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1143                     qp_histogram[qp]++;
1144                 for (j = 0; j < 32; j++)
1145                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1146             }
1147             if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1148                 int j;
1149                 double error, error_sum = 0;
1150                 double scale, scale_sum = 0;
1151                 double p;
1152                 char type[3] = { 'Y','U','V' };
1153                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1154                 for (j = 0; j < 3; j++) {
1155                     if (is_last_report) {
1156                         error = enc->error[j];
1157                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1158                     } else {
1159                         error = enc->coded_frame->error[j];
1160                         scale = enc->width * enc->height * 255.0 * 255.0;
1161                     }
1162                     if (j)
1163                         scale /= 4;
1164                     error_sum += error;
1165                     scale_sum += scale;
1166                     p = psnr(error / scale);
1167                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1168                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1169                                ost->file_index, ost->index, type[i] | 32, p);
1170                 }
1171                 p = psnr(error_sum / scale_sum);
1172                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1173                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1174                            ost->file_index, ost->index, p);
1175             }
1176             vid = 1;
1177         }
1178         /* compute min output value */
1179         if ((is_last_report || !ost->finished) && ost->st->pts.val != AV_NOPTS_VALUE)
1180             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1181                                           ost->st->time_base, AV_TIME_BASE_Q));
1182     }
1183
1184     secs = pts / AV_TIME_BASE;
1185     us = pts % AV_TIME_BASE;
1186     mins = secs / 60;
1187     secs %= 60;
1188     hours = mins / 60;
1189     mins %= 60;
1190
1191     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1192
1193     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1194                                  "size=N/A time=");
1195     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1196                                  "size=%8.0fkB time=", total_size / 1024.0);
1197     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1198              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1199              (100 * us) / AV_TIME_BASE);
1200     if (bitrate < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1201                               "bitrate=N/A");
1202     else             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1203                               "bitrate=%6.1fkbits/s", bitrate);
1204     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
1205     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1206     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1207     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1208                hours, mins, secs, us);
1209
1210     if (nb_frames_dup || nb_frames_drop)
1211         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1212                 nb_frames_dup, nb_frames_drop);
1213     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1214     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1215
1216     if (print_stats || is_last_report) {
1217     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1218
1219     fflush(stderr);
1220     }
1221
1222     if (progress_avio) {
1223         av_bprintf(&buf_script, "progress=%s\n",
1224                    is_last_report ? "end" : "continue");
1225         avio_write(progress_avio, buf_script.str,
1226                    FFMIN(buf_script.len, buf_script.size - 1));
1227         avio_flush(progress_avio);
1228         av_bprint_finalize(&buf_script, NULL);
1229         if (is_last_report) {
1230             avio_close(progress_avio);
1231             progress_avio = NULL;
1232         }
1233     }
1234
1235     if (is_last_report) {
1236         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1237         av_log(NULL, AV_LOG_INFO, "\n");
1238         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1239                video_size / 1024.0,
1240                audio_size / 1024.0,
1241                subtitle_size / 1024.0,
1242                extra_size / 1024.0,
1243                100.0 * (total_size - raw) / raw
1244         );
1245         if(video_size + audio_size + subtitle_size + extra_size == 0){
1246             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1247         }
1248     }
1249 }
1250
1251 static void flush_encoders(void)
1252 {
1253     int i, ret;
1254
1255     for (i = 0; i < nb_output_streams; i++) {
1256         OutputStream   *ost = output_streams[i];
1257         AVCodecContext *enc = ost->st->codec;
1258         AVFormatContext *os = output_files[ost->file_index]->ctx;
1259         int stop_encoding = 0;
1260
1261         if (!ost->encoding_needed)
1262             continue;
1263
1264         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1265             continue;
1266         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1267             continue;
1268
1269         for (;;) {
1270             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1271             const char *desc;
1272             int64_t *size;
1273
1274             switch (ost->st->codec->codec_type) {
1275             case AVMEDIA_TYPE_AUDIO:
1276                 encode = avcodec_encode_audio2;
1277                 desc   = "Audio";
1278                 size   = &audio_size;
1279                 break;
1280             case AVMEDIA_TYPE_VIDEO:
1281                 encode = avcodec_encode_video2;
1282                 desc   = "Video";
1283                 size   = &video_size;
1284                 break;
1285             default:
1286                 stop_encoding = 1;
1287             }
1288
1289             if (encode) {
1290                 AVPacket pkt;
1291                 int got_packet;
1292                 av_init_packet(&pkt);
1293                 pkt.data = NULL;
1294                 pkt.size = 0;
1295
1296                 update_benchmark(NULL);
1297                 ret = encode(enc, &pkt, NULL, &got_packet);
1298                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1299                 if (ret < 0) {
1300                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1301                     exit(1);
1302                 }
1303                 *size += pkt.size;
1304                 if (ost->logfile && enc->stats_out) {
1305                     fprintf(ost->logfile, "%s", enc->stats_out);
1306                 }
1307                 if (!got_packet) {
1308                     stop_encoding = 1;
1309                     break;
1310                 }
1311                 if (pkt.pts != AV_NOPTS_VALUE)
1312                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1313                 if (pkt.dts != AV_NOPTS_VALUE)
1314                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1315                 if (pkt.duration > 0)
1316                     pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1317                 write_frame(os, &pkt, ost);
1318                 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
1319                     do_video_stats(ost, pkt.size);
1320                 }
1321             }
1322
1323             if (stop_encoding)
1324                 break;
1325         }
1326     }
1327 }
1328
1329 /*
1330  * Check whether a packet from ist should be written into ost at this time
1331  */
1332 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1333 {
1334     OutputFile *of = output_files[ost->file_index];
1335     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1336
1337     if (ost->source_index != ist_index)
1338         return 0;
1339
1340     if (of->start_time && ist->pts < of->start_time)
1341         return 0;
1342
1343     return 1;
1344 }
1345
1346 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1347 {
1348     OutputFile *of = output_files[ost->file_index];
1349     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1350     AVPicture pict;
1351     AVPacket opkt;
1352
1353     av_init_packet(&opkt);
1354
1355     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1356         !ost->copy_initial_nonkeyframes)
1357         return;
1358
1359     if (!ost->frame_number && ist->pts < of->start_time &&
1360         !ost->copy_prior_start)
1361         return;
1362
1363     if (of->recording_time != INT64_MAX &&
1364         ist->pts >= of->recording_time + of->start_time) {
1365         close_output_stream(ost);
1366         return;
1367     }
1368
1369     /* force the input stream PTS */
1370     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1371         audio_size += pkt->size;
1372     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1373         video_size += pkt->size;
1374         ost->sync_opts++;
1375     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1376         subtitle_size += pkt->size;
1377     }
1378
1379     if (pkt->pts != AV_NOPTS_VALUE)
1380         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1381     else
1382         opkt.pts = AV_NOPTS_VALUE;
1383
1384     if (pkt->dts == AV_NOPTS_VALUE)
1385         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1386     else
1387         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1388     opkt.dts -= ost_tb_start_time;
1389
1390     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1391         int duration = av_get_audio_frame_duration(ist->st->codec, pkt->size);
1392         if(!duration)
1393             duration = ist->st->codec->frame_size;
1394         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1395                                                (AVRational){1, ist->st->codec->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
1396                                                ost->st->time_base) - ost_tb_start_time;
1397     }
1398
1399     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1400     opkt.flags    = pkt->flags;
1401
1402     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1403     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1404        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1405        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1406        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1407        ) {
1408         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1409             opkt.destruct = av_destruct_packet;
1410     } else {
1411         opkt.data = pkt->data;
1412         opkt.size = pkt->size;
1413     }
1414
1415     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1416         /* store AVPicture in AVPacket, as expected by the output format */
1417         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1418         opkt.data = (uint8_t *)&pict;
1419         opkt.size = sizeof(AVPicture);
1420         opkt.flags |= AV_PKT_FLAG_KEY;
1421     }
1422
1423     write_frame(of->ctx, &opkt, ost);
1424     ost->st->codec->frame_number++;
1425 }
1426
1427 static void rate_emu_sleep(InputStream *ist)
1428 {
1429     if (input_files[ist->file_index]->rate_emu) {
1430         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
1431         int64_t now = av_gettime() - ist->start;
1432         if (pts > now)
1433             av_usleep(pts - now);
1434     }
1435 }
1436
1437 int guess_input_channel_layout(InputStream *ist)
1438 {
1439     AVCodecContext *dec = ist->st->codec;
1440
1441     if (!dec->channel_layout) {
1442         char layout_name[256];
1443
1444         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1445         if (!dec->channel_layout)
1446             return 0;
1447         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1448                                      dec->channels, dec->channel_layout);
1449         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1450                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1451     }
1452     return 1;
1453 }
1454
1455 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1456 {
1457     AVFrame *decoded_frame;
1458     AVCodecContext *avctx = ist->st->codec;
1459     int i, ret, resample_changed;
1460     AVRational decoded_frame_tb;
1461
1462     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1463         return AVERROR(ENOMEM);
1464     decoded_frame = ist->decoded_frame;
1465
1466     update_benchmark(NULL);
1467     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1468     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1469
1470     if (ret >= 0 && avctx->sample_rate <= 0) {
1471         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1472         ret = AVERROR_INVALIDDATA;
1473     }
1474
1475     if (!*got_output || ret < 0) {
1476         if (!pkt->size) {
1477             for (i = 0; i < ist->nb_filters; i++)
1478                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1479         }
1480         return ret;
1481     }
1482
1483 #if 1
1484     /* increment next_dts to use for the case where the input stream does not
1485        have timestamps or there are multiple frames in the packet */
1486     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1487                      avctx->sample_rate;
1488     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1489                      avctx->sample_rate;
1490 #endif
1491
1492     rate_emu_sleep(ist);
1493
1494     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1495                        ist->resample_channels       != avctx->channels               ||
1496                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1497                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1498     if (resample_changed) {
1499         char layout1[64], layout2[64];
1500
1501         if (!guess_input_channel_layout(ist)) {
1502             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1503                    "layout for Input Stream #%d.%d\n", ist->file_index,
1504                    ist->st->index);
1505             exit(1);
1506         }
1507         decoded_frame->channel_layout = avctx->channel_layout;
1508
1509         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1510                                      ist->resample_channel_layout);
1511         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1512                                      decoded_frame->channel_layout);
1513
1514         av_log(NULL, AV_LOG_INFO,
1515                "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",
1516                ist->file_index, ist->st->index,
1517                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1518                ist->resample_channels, layout1,
1519                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1520                avctx->channels, layout2);
1521
1522         ist->resample_sample_fmt     = decoded_frame->format;
1523         ist->resample_sample_rate    = decoded_frame->sample_rate;
1524         ist->resample_channel_layout = decoded_frame->channel_layout;
1525         ist->resample_channels       = avctx->channels;
1526
1527         for (i = 0; i < nb_filtergraphs; i++)
1528             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1529                 FilterGraph *fg = filtergraphs[i];
1530                 int j;
1531                 if (configure_filtergraph(fg) < 0) {
1532                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1533                     exit(1);
1534                 }
1535                 for (j = 0; j < fg->nb_outputs; j++) {
1536                     OutputStream *ost = fg->outputs[j]->ost;
1537                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1538                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1539                         av_buffersink_set_frame_size(ost->filter->filter,
1540                                                      ost->st->codec->frame_size);
1541                 }
1542             }
1543     }
1544
1545     /* if the decoder provides a pts, use it instead of the last packet pts.
1546        the decoder could be delaying output by a packet or more. */
1547     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1548         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1549         decoded_frame_tb   = avctx->time_base;
1550     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1551         decoded_frame->pts = decoded_frame->pkt_pts;
1552         pkt->pts           = AV_NOPTS_VALUE;
1553         decoded_frame_tb   = ist->st->time_base;
1554     } else if (pkt->pts != AV_NOPTS_VALUE) {
1555         decoded_frame->pts = pkt->pts;
1556         pkt->pts           = AV_NOPTS_VALUE;
1557         decoded_frame_tb   = ist->st->time_base;
1558     }else {
1559         decoded_frame->pts = ist->dts;
1560         decoded_frame_tb   = AV_TIME_BASE_Q;
1561     }
1562     if (decoded_frame->pts != AV_NOPTS_VALUE)
1563         decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
1564                                               (AVRational){1, ist->st->codec->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
1565                                               (AVRational){1, ist->st->codec->sample_rate});
1566     for (i = 0; i < ist->nb_filters; i++)
1567         av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame,
1568                                AV_BUFFERSRC_FLAG_PUSH);
1569
1570     decoded_frame->pts = AV_NOPTS_VALUE;
1571
1572     return ret;
1573 }
1574
1575 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1576 {
1577     AVFrame *decoded_frame;
1578     void *buffer_to_free = NULL;
1579     int i, ret = 0, resample_changed;
1580     int64_t best_effort_timestamp;
1581     AVRational *frame_sample_aspect;
1582
1583     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1584         return AVERROR(ENOMEM);
1585     decoded_frame = ist->decoded_frame;
1586     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1587
1588     update_benchmark(NULL);
1589     ret = avcodec_decode_video2(ist->st->codec,
1590                                 decoded_frame, got_output, pkt);
1591     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1592     if (!*got_output || ret < 0) {
1593         if (!pkt->size) {
1594             for (i = 0; i < ist->nb_filters; i++)
1595                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1596         }
1597         return ret;
1598     }
1599
1600     if(ist->top_field_first>=0)
1601         decoded_frame->top_field_first = ist->top_field_first;
1602
1603     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1604     if(best_effort_timestamp != AV_NOPTS_VALUE)
1605         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1606
1607     if (debug_ts) {
1608         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1609                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1610                 ist->st->index, av_ts2str(decoded_frame->pts),
1611                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1612                 best_effort_timestamp,
1613                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1614                 decoded_frame->key_frame, decoded_frame->pict_type);
1615     }
1616
1617     pkt->size = 0;
1618     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1619
1620     rate_emu_sleep(ist);
1621
1622     if (ist->st->sample_aspect_ratio.num)
1623         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1624
1625     resample_changed = ist->resample_width   != decoded_frame->width  ||
1626                        ist->resample_height  != decoded_frame->height ||
1627                        ist->resample_pix_fmt != decoded_frame->format;
1628     if (resample_changed) {
1629         av_log(NULL, AV_LOG_INFO,
1630                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1631                ist->file_index, ist->st->index,
1632                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1633                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1634
1635         ist->resample_width   = decoded_frame->width;
1636         ist->resample_height  = decoded_frame->height;
1637         ist->resample_pix_fmt = decoded_frame->format;
1638
1639         for (i = 0; i < nb_filtergraphs; i++) {
1640             if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
1641                 configure_filtergraph(filtergraphs[i]) < 0) {
1642                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1643                 exit(1);
1644             }
1645         }
1646     }
1647
1648     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1649     for (i = 0; i < ist->nb_filters; i++) {
1650         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
1651                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
1652                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
1653
1654         if (!frame_sample_aspect->num)
1655             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1656         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
1657             FrameBuffer      *buf = decoded_frame->opaque;
1658             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1659                                         decoded_frame->data, decoded_frame->linesize,
1660                                         AV_PERM_READ | AV_PERM_PRESERVE,
1661                                         ist->st->codec->width, ist->st->codec->height,
1662                                         ist->st->codec->pix_fmt);
1663
1664             avfilter_copy_frame_props(fb, decoded_frame);
1665             fb->buf->priv           = buf;
1666             fb->buf->free           = filter_release_buffer;
1667
1668             av_assert0(buf->refcount>0);
1669             buf->refcount++;
1670             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
1671                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
1672                                  AV_BUFFERSRC_FLAG_NO_COPY |
1673                                  AV_BUFFERSRC_FLAG_PUSH);
1674         } else
1675         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, AV_BUFFERSRC_FLAG_PUSH)<0) {
1676             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
1677             exit(1);
1678         }
1679
1680     }
1681
1682     av_free(buffer_to_free);
1683     return ret;
1684 }
1685
1686 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1687 {
1688     AVSubtitle subtitle;
1689     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1690                                           &subtitle, got_output, pkt);
1691     if (ret < 0 || !*got_output) {
1692         if (!pkt->size)
1693             sub2video_flush(ist);
1694         return ret;
1695     }
1696
1697     if (ist->fix_sub_duration) {
1698         if (ist->prev_sub.got_output) {
1699             int end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1700                                  1000, AV_TIME_BASE);
1701             if (end < ist->prev_sub.subtitle.end_display_time) {
1702                 av_log(ist->st->codec, AV_LOG_DEBUG,
1703                        "Subtitle duration reduced from %d to %d\n",
1704                        ist->prev_sub.subtitle.end_display_time, end);
1705                 ist->prev_sub.subtitle.end_display_time = end;
1706             }
1707         }
1708         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1709         FFSWAP(int,        ret,         ist->prev_sub.ret);
1710         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1711     }
1712
1713     sub2video_update(ist, &subtitle);
1714
1715     if (!*got_output || !subtitle.num_rects)
1716         return ret;
1717
1718     rate_emu_sleep(ist);
1719
1720     for (i = 0; i < nb_output_streams; i++) {
1721         OutputStream *ost = output_streams[i];
1722
1723         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1724             continue;
1725
1726         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
1727     }
1728
1729     avsubtitle_free(&subtitle);
1730     return ret;
1731 }
1732
1733 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1734 static int output_packet(InputStream *ist, const AVPacket *pkt)
1735 {
1736     int ret = 0, i;
1737     int got_output;
1738
1739     AVPacket avpkt;
1740     if (!ist->saw_first_ts) {
1741         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;
1742         ist->pts = 0;
1743         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1744             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1745             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1746         }
1747         ist->saw_first_ts = 1;
1748     }
1749
1750     if (ist->next_dts == AV_NOPTS_VALUE)
1751         ist->next_dts = ist->dts;
1752     if (ist->next_pts == AV_NOPTS_VALUE)
1753         ist->next_pts = ist->pts;
1754
1755     if (pkt == NULL) {
1756         /* EOF handling */
1757         av_init_packet(&avpkt);
1758         avpkt.data = NULL;
1759         avpkt.size = 0;
1760         goto handle_eof;
1761     } else {
1762         avpkt = *pkt;
1763     }
1764
1765     if (pkt->dts != AV_NOPTS_VALUE) {
1766         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1767         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1768             ist->next_pts = ist->pts = ist->dts;
1769     }
1770
1771     // while we have more to decode or while the decoder did output something on EOF
1772     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1773         int duration;
1774     handle_eof:
1775
1776         ist->pts = ist->next_pts;
1777         ist->dts = ist->next_dts;
1778
1779         if (avpkt.size && avpkt.size != pkt->size) {
1780             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1781                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1782             ist->showed_multi_packet_warning = 1;
1783         }
1784
1785         switch (ist->st->codec->codec_type) {
1786         case AVMEDIA_TYPE_AUDIO:
1787             ret = decode_audio    (ist, &avpkt, &got_output);
1788             break;
1789         case AVMEDIA_TYPE_VIDEO:
1790             ret = decode_video    (ist, &avpkt, &got_output);
1791             if (avpkt.duration) {
1792                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1793             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1794                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1795                 duration = ((int64_t)AV_TIME_BASE *
1796                                 ist->st->codec->time_base.num * ticks) /
1797                                 ist->st->codec->time_base.den;
1798             } else
1799                 duration = 0;
1800
1801             if(ist->dts != AV_NOPTS_VALUE && duration) {
1802                 ist->next_dts += duration;
1803             }else
1804                 ist->next_dts = AV_NOPTS_VALUE;
1805
1806             if (got_output)
1807                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1808             break;
1809         case AVMEDIA_TYPE_SUBTITLE:
1810             ret = transcode_subtitles(ist, &avpkt, &got_output);
1811             break;
1812         default:
1813             return -1;
1814         }
1815
1816         if (ret < 0)
1817             return ret;
1818
1819         avpkt.dts=
1820         avpkt.pts= AV_NOPTS_VALUE;
1821
1822         // touch data and size only if not EOF
1823         if (pkt) {
1824             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1825                 ret = avpkt.size;
1826             avpkt.data += ret;
1827             avpkt.size -= ret;
1828         }
1829         if (!got_output) {
1830             continue;
1831         }
1832     }
1833
1834     /* handle stream copy */
1835     if (!ist->decoding_needed) {
1836         rate_emu_sleep(ist);
1837         ist->dts = ist->next_dts;
1838         switch (ist->st->codec->codec_type) {
1839         case AVMEDIA_TYPE_AUDIO:
1840             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1841                              ist->st->codec->sample_rate;
1842             break;
1843         case AVMEDIA_TYPE_VIDEO:
1844             if (pkt->duration) {
1845                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1846             } else if(ist->st->codec->time_base.num != 0) {
1847                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1848                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1849                                   ist->st->codec->time_base.num * ticks) /
1850                                   ist->st->codec->time_base.den;
1851             }
1852             break;
1853         }
1854         ist->pts = ist->dts;
1855         ist->next_pts = ist->next_dts;
1856     }
1857     for (i = 0; pkt && i < nb_output_streams; i++) {
1858         OutputStream *ost = output_streams[i];
1859
1860         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1861             continue;
1862
1863         do_streamcopy(ist, ost, pkt);
1864     }
1865
1866     return 0;
1867 }
1868
1869 static void print_sdp(void)
1870 {
1871     char sdp[2048];
1872     int i;
1873     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1874
1875     if (!avc)
1876         exit(1);
1877     for (i = 0; i < nb_output_files; i++)
1878         avc[i] = output_files[i]->ctx;
1879
1880     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1881     printf("SDP:\n%s\n", sdp);
1882     fflush(stdout);
1883     av_freep(&avc);
1884 }
1885
1886 static int init_input_stream(int ist_index, char *error, int error_len)
1887 {
1888     int ret;
1889     InputStream *ist = input_streams[ist_index];
1890
1891     if (ist->decoding_needed) {
1892         AVCodec *codec = ist->dec;
1893         if (!codec) {
1894             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1895                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1896             return AVERROR(EINVAL);
1897         }
1898
1899         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
1900         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
1901             ist->st->codec->get_buffer     = codec_get_buffer;
1902             ist->st->codec->release_buffer = codec_release_buffer;
1903             ist->st->codec->opaque         = &ist->buffer_pool;
1904         }
1905
1906         if (!av_dict_get(ist->opts, "threads", NULL, 0))
1907             av_dict_set(&ist->opts, "threads", "auto", 0);
1908         if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
1909             if (ret == AVERROR_EXPERIMENTAL)
1910                 abort_codec_experimental(codec, 0);
1911             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1912                     ist->file_index, ist->st->index);
1913             return ret;
1914         }
1915         assert_avoptions(ist->opts);
1916     }
1917
1918     ist->next_pts = AV_NOPTS_VALUE;
1919     ist->next_dts = AV_NOPTS_VALUE;
1920     ist->is_start = 1;
1921
1922     return 0;
1923 }
1924
1925 static InputStream *get_input_stream(OutputStream *ost)
1926 {
1927     if (ost->source_index >= 0)
1928         return input_streams[ost->source_index];
1929     return NULL;
1930 }
1931
1932 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1933                                     AVCodecContext *avctx)
1934 {
1935     char *p;
1936     int n = 1, i;
1937     int64_t t;
1938
1939     for (p = kf; *p; p++)
1940         if (*p == ',')
1941             n++;
1942     ost->forced_kf_count = n;
1943     ost->forced_kf_pts   = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1944     if (!ost->forced_kf_pts) {
1945         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1946         exit(1);
1947     }
1948
1949     p = kf;
1950     for (i = 0; i < n; i++) {
1951         char *next = strchr(p, ',');
1952
1953         if (next)
1954             *next++ = 0;
1955
1956         t = parse_time_or_die("force_key_frames", p, 1);
1957         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1958
1959         p = next;
1960     }
1961 }
1962
1963 static void report_new_stream(int input_index, AVPacket *pkt)
1964 {
1965     InputFile *file = input_files[input_index];
1966     AVStream *st = file->ctx->streams[pkt->stream_index];
1967
1968     if (pkt->stream_index < file->nb_streams_warn)
1969         return;
1970     av_log(file->ctx, AV_LOG_WARNING,
1971            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
1972            av_get_media_type_string(st->codec->codec_type),
1973            input_index, pkt->stream_index,
1974            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
1975     file->nb_streams_warn = pkt->stream_index + 1;
1976 }
1977
1978 static int transcode_init(void)
1979 {
1980     int ret = 0, i, j, k;
1981     AVFormatContext *oc;
1982     AVCodecContext *codec;
1983     OutputStream *ost;
1984     InputStream *ist;
1985     char error[1024];
1986     int want_sdp = 1;
1987
1988     /* init framerate emulation */
1989     for (i = 0; i < nb_input_files; i++) {
1990         InputFile *ifile = input_files[i];
1991         if (ifile->rate_emu)
1992             for (j = 0; j < ifile->nb_streams; j++)
1993                 input_streams[j + ifile->ist_index]->start = av_gettime();
1994     }
1995
1996     /* output stream init */
1997     for (i = 0; i < nb_output_files; i++) {
1998         oc = output_files[i]->ctx;
1999         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2000             av_dump_format(oc, i, oc->filename, 1);
2001             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2002             return AVERROR(EINVAL);
2003         }
2004     }
2005
2006     /* init complex filtergraphs */
2007     for (i = 0; i < nb_filtergraphs; i++)
2008         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2009             return ret;
2010
2011     /* for each output stream, we compute the right encoding parameters */
2012     for (i = 0; i < nb_output_streams; i++) {
2013         AVCodecContext *icodec = NULL;
2014         ost = output_streams[i];
2015         oc  = output_files[ost->file_index]->ctx;
2016         ist = get_input_stream(ost);
2017
2018         if (ost->attachment_filename)
2019             continue;
2020
2021         codec  = ost->st->codec;
2022
2023         if (ist) {
2024             icodec = ist->st->codec;
2025
2026             ost->st->disposition          = ist->st->disposition;
2027             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2028             codec->chroma_sample_location = icodec->chroma_sample_location;
2029         }
2030
2031         if (ost->stream_copy) {
2032             uint64_t extra_size;
2033
2034             av_assert0(ist && !ost->filter);
2035
2036             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2037
2038             if (extra_size > INT_MAX) {
2039                 return AVERROR(EINVAL);
2040             }
2041
2042             /* if stream_copy is selected, no need to decode or encode */
2043             codec->codec_id   = icodec->codec_id;
2044             codec->codec_type = icodec->codec_type;
2045
2046             if (!codec->codec_tag) {
2047                 if (!oc->oformat->codec_tag ||
2048                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2049                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2050                     codec->codec_tag = icodec->codec_tag;
2051             }
2052
2053             codec->bit_rate       = icodec->bit_rate;
2054             codec->rc_max_rate    = icodec->rc_max_rate;
2055             codec->rc_buffer_size = icodec->rc_buffer_size;
2056             codec->field_order    = icodec->field_order;
2057             codec->extradata      = av_mallocz(extra_size);
2058             if (!codec->extradata) {
2059                 return AVERROR(ENOMEM);
2060             }
2061             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2062             codec->extradata_size= icodec->extradata_size;
2063             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2064
2065             codec->time_base = ist->st->time_base;
2066             /*
2067              * Avi is a special case here because it supports variable fps but
2068              * having the fps and timebase differe significantly adds quite some
2069              * overhead
2070              */
2071             if(!strcmp(oc->oformat->name, "avi")) {
2072                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2073                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2074                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2075                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2076                      || copy_tb==2){
2077                     codec->time_base.num = ist->st->r_frame_rate.den;
2078                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2079                     codec->ticks_per_frame = 2;
2080                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2081                                  && av_q2d(ist->st->time_base) < 1.0/500
2082                     || copy_tb==0){
2083                     codec->time_base = icodec->time_base;
2084                     codec->time_base.num *= icodec->ticks_per_frame;
2085                     codec->time_base.den *= 2;
2086                     codec->ticks_per_frame = 2;
2087                 }
2088             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2089                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2090                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2091                       && strcmp(oc->oformat->name, "f4v")
2092             ) {
2093                 if(   copy_tb<0 && icodec->time_base.den
2094                                 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2095                                 && av_q2d(ist->st->time_base) < 1.0/500
2096                    || copy_tb==0){
2097                     codec->time_base = icodec->time_base;
2098                     codec->time_base.num *= icodec->ticks_per_frame;
2099                 }
2100             }
2101
2102             if(ost->frame_rate.num)
2103                 codec->time_base = av_inv_q(ost->frame_rate);
2104
2105             av_reduce(&codec->time_base.num, &codec->time_base.den,
2106                         codec->time_base.num, codec->time_base.den, INT_MAX);
2107
2108             switch (codec->codec_type) {
2109             case AVMEDIA_TYPE_AUDIO:
2110                 if (audio_volume != 256) {
2111                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2112                     exit(1);
2113                 }
2114                 codec->channel_layout     = icodec->channel_layout;
2115                 codec->sample_rate        = icodec->sample_rate;
2116                 codec->channels           = icodec->channels;
2117                 codec->frame_size         = icodec->frame_size;
2118                 codec->audio_service_type = icodec->audio_service_type;
2119                 codec->block_align        = icodec->block_align;
2120                 if((codec->block_align == 1 || codec->block_align == 1152) && codec->codec_id == AV_CODEC_ID_MP3)
2121                     codec->block_align= 0;
2122                 if(codec->codec_id == AV_CODEC_ID_AC3)
2123                     codec->block_align= 0;
2124                 break;
2125             case AVMEDIA_TYPE_VIDEO:
2126                 codec->pix_fmt            = icodec->pix_fmt;
2127                 codec->width              = icodec->width;
2128                 codec->height             = icodec->height;
2129                 codec->has_b_frames       = icodec->has_b_frames;
2130                 if (!codec->sample_aspect_ratio.num) {
2131                     codec->sample_aspect_ratio   =
2132                     ost->st->sample_aspect_ratio =
2133                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2134                         ist->st->codec->sample_aspect_ratio.num ?
2135                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2136                 }
2137                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2138                 break;
2139             case AVMEDIA_TYPE_SUBTITLE:
2140                 codec->width  = icodec->width;
2141                 codec->height = icodec->height;
2142                 break;
2143             case AVMEDIA_TYPE_DATA:
2144             case AVMEDIA_TYPE_ATTACHMENT:
2145                 break;
2146             default:
2147                 abort();
2148             }
2149         } else {
2150             if (!ost->enc)
2151                 ost->enc = avcodec_find_encoder(codec->codec_id);
2152             if (!ost->enc) {
2153                 /* should only happen when a default codec is not present. */
2154                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2155                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2156                 ret = AVERROR(EINVAL);
2157                 goto dump_format;
2158             }
2159
2160             if (ist)
2161                 ist->decoding_needed++;
2162             ost->encoding_needed = 1;
2163
2164             if (!ost->filter &&
2165                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2166                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2167                     FilterGraph *fg;
2168                     fg = init_simple_filtergraph(ist, ost);
2169                     if (configure_filtergraph(fg)) {
2170                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2171                         exit(1);
2172                     }
2173             }
2174
2175             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2176                 if (ost->filter && !ost->frame_rate.num)
2177                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2178                 if (ist && !ost->frame_rate.num)
2179                     ost->frame_rate = ist->framerate;
2180                 if (ist && !ost->frame_rate.num)
2181                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2182 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2183                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2184                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2185                     ost->frame_rate = ost->enc->supported_framerates[idx];
2186                 }
2187             }
2188
2189             switch (codec->codec_type) {
2190             case AVMEDIA_TYPE_AUDIO:
2191                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2192                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2193                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2194                 codec->channels       = av_get_channel_layout_nb_channels(codec->channel_layout);
2195                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2196                 break;
2197             case AVMEDIA_TYPE_VIDEO:
2198                 codec->time_base = av_inv_q(ost->frame_rate);
2199                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2200                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2201                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2202                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2203                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2204                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2205                 }
2206                 for (j = 0; j < ost->forced_kf_count; j++)
2207                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2208                                                          AV_TIME_BASE_Q,
2209                                                          codec->time_base);
2210
2211                 codec->width  = ost->filter->filter->inputs[0]->w;
2212                 codec->height = ost->filter->filter->inputs[0]->h;
2213                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2214                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
2215                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
2216                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2217                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2218
2219                 if (!icodec ||
2220                     codec->width   != icodec->width  ||
2221                     codec->height  != icodec->height ||
2222                     codec->pix_fmt != icodec->pix_fmt) {
2223                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2224                 }
2225
2226                 if (ost->forced_keyframes)
2227                     parse_forced_key_frames(ost->forced_keyframes, ost,
2228                                             ost->st->codec);
2229                 break;
2230             case AVMEDIA_TYPE_SUBTITLE:
2231                 codec->time_base = (AVRational){1, 1000};
2232                 if (!codec->width) {
2233                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2234                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2235                 }
2236                 break;
2237             default:
2238                 abort();
2239                 break;
2240             }
2241             /* two pass mode */
2242             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2243                 char logfilename[1024];
2244                 FILE *f;
2245
2246                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2247                          ost->logfile_prefix ? ost->logfile_prefix :
2248                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2249                          i);
2250                 if (!strcmp(ost->enc->name, "libx264")) {
2251                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2252                 } else {
2253                     if (codec->flags & CODEC_FLAG_PASS2) {
2254                         char  *logbuffer;
2255                         size_t logbuffer_size;
2256                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2257                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2258                                    logfilename);
2259                             exit(1);
2260                         }
2261                         codec->stats_in = logbuffer;
2262                     }
2263                     if (codec->flags & CODEC_FLAG_PASS1) {
2264                         f = fopen(logfilename, "wb");
2265                         if (!f) {
2266                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2267                                 logfilename, strerror(errno));
2268                             exit(1);
2269                         }
2270                         ost->logfile = f;
2271                     }
2272                 }
2273             }
2274         }
2275     }
2276
2277     /* open each encoder */
2278     for (i = 0; i < nb_output_streams; i++) {
2279         ost = output_streams[i];
2280         if (ost->encoding_needed) {
2281             AVCodec      *codec = ost->enc;
2282             AVCodecContext *dec = NULL;
2283
2284             if ((ist = get_input_stream(ost)))
2285                 dec = ist->st->codec;
2286             if (dec && dec->subtitle_header) {
2287                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2288                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2289                 if (!ost->st->codec->subtitle_header) {
2290                     ret = AVERROR(ENOMEM);
2291                     goto dump_format;
2292                 }
2293                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2294                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2295             }
2296             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2297                 av_dict_set(&ost->opts, "threads", "auto", 0);
2298             if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
2299                 if (ret == AVERROR_EXPERIMENTAL)
2300                     abort_codec_experimental(codec, 1);
2301                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2302                         ost->file_index, ost->index);
2303                 goto dump_format;
2304             }
2305             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2306                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2307                 av_buffersink_set_frame_size(ost->filter->filter,
2308                                              ost->st->codec->frame_size);
2309             assert_avoptions(ost->opts);
2310             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2311                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2312                                              " It takes bits/s as argument, not kbits/s\n");
2313             extra_size += ost->st->codec->extradata_size;
2314
2315             if (ost->st->codec->me_threshold)
2316                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
2317         }
2318     }
2319
2320     /* init input streams */
2321     for (i = 0; i < nb_input_streams; i++)
2322         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
2323             goto dump_format;
2324
2325     /* discard unused programs */
2326     for (i = 0; i < nb_input_files; i++) {
2327         InputFile *ifile = input_files[i];
2328         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2329             AVProgram *p = ifile->ctx->programs[j];
2330             int discard  = AVDISCARD_ALL;
2331
2332             for (k = 0; k < p->nb_stream_indexes; k++)
2333                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2334                     discard = AVDISCARD_DEFAULT;
2335                     break;
2336                 }
2337             p->discard = discard;
2338         }
2339     }
2340
2341     /* open files and write file headers */
2342     for (i = 0; i < nb_output_files; i++) {
2343         oc = output_files[i]->ctx;
2344         oc->interrupt_callback = int_cb;
2345         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2346             char errbuf[128];
2347             const char *errbuf_ptr = errbuf;
2348             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
2349                 errbuf_ptr = strerror(AVUNERROR(ret));
2350             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
2351             ret = AVERROR(EINVAL);
2352             goto dump_format;
2353         }
2354 //         assert_avoptions(output_files[i]->opts);
2355         if (strcmp(oc->oformat->name, "rtp")) {
2356             want_sdp = 0;
2357         }
2358     }
2359
2360  dump_format:
2361     /* dump the file output parameters - cannot be done before in case
2362        of stream copy */
2363     for (i = 0; i < nb_output_files; i++) {
2364         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2365     }
2366
2367     /* dump the stream mapping */
2368     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2369     for (i = 0; i < nb_input_streams; i++) {
2370         ist = input_streams[i];
2371
2372         for (j = 0; j < ist->nb_filters; j++) {
2373             if (ist->filters[j]->graph->graph_desc) {
2374                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2375                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2376                        ist->filters[j]->name);
2377                 if (nb_filtergraphs > 1)
2378                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2379                 av_log(NULL, AV_LOG_INFO, "\n");
2380             }
2381         }
2382     }
2383
2384     for (i = 0; i < nb_output_streams; i++) {
2385         ost = output_streams[i];
2386
2387         if (ost->attachment_filename) {
2388             /* an attached file */
2389             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2390                    ost->attachment_filename, ost->file_index, ost->index);
2391             continue;
2392         }
2393
2394         if (ost->filter && ost->filter->graph->graph_desc) {
2395             /* output from a complex graph */
2396             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2397             if (nb_filtergraphs > 1)
2398                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2399
2400             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2401                    ost->index, ost->enc ? ost->enc->name : "?");
2402             continue;
2403         }
2404
2405         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2406                input_streams[ost->source_index]->file_index,
2407                input_streams[ost->source_index]->st->index,
2408                ost->file_index,
2409                ost->index);
2410         if (ost->sync_ist != input_streams[ost->source_index])
2411             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2412                    ost->sync_ist->file_index,
2413                    ost->sync_ist->st->index);
2414         if (ost->stream_copy)
2415             av_log(NULL, AV_LOG_INFO, " (copy)");
2416         else
2417             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2418                    input_streams[ost->source_index]->dec->name : "?",
2419                    ost->enc ? ost->enc->name : "?");
2420         av_log(NULL, AV_LOG_INFO, "\n");
2421     }
2422
2423     if (ret) {
2424         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2425         return ret;
2426     }
2427
2428     if (want_sdp) {
2429         print_sdp();
2430     }
2431
2432     return 0;
2433 }
2434
2435 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2436 static int need_output(void)
2437 {
2438     int i;
2439
2440     for (i = 0; i < nb_output_streams; i++) {
2441         OutputStream *ost    = output_streams[i];
2442         OutputFile *of       = output_files[ost->file_index];
2443         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2444
2445         if (ost->finished ||
2446             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2447             continue;
2448         if (ost->frame_number >= ost->max_frames) {
2449             int j;
2450             for (j = 0; j < of->ctx->nb_streams; j++)
2451                 close_output_stream(output_streams[of->ost_index + j]);
2452             continue;
2453         }
2454
2455         return 1;
2456     }
2457
2458     return 0;
2459 }
2460
2461 /**
2462  * Select the output stream to process.
2463  *
2464  * @return  selected output stream, or NULL if none available
2465  */
2466 static OutputStream *choose_output(void)
2467 {
2468     int i;
2469     int64_t opts_min = INT64_MAX;
2470     OutputStream *ost_min = NULL;
2471
2472     for (i = 0; i < nb_output_streams; i++) {
2473         OutputStream *ost = output_streams[i];
2474         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2475                                     AV_TIME_BASE_Q);
2476         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2477             opts_min = opts;
2478             ost_min  = ost;
2479         }
2480     }
2481     return ost_min;
2482 }
2483
2484 static int check_keyboard_interaction(int64_t cur_time)
2485 {
2486     int i, ret, key;
2487     static int64_t last_time;
2488     if (received_nb_signals)
2489         return AVERROR_EXIT;
2490     /* read_key() returns 0 on EOF */
2491     if(cur_time - last_time >= 100000 && !run_as_daemon){
2492         key =  read_key();
2493         last_time = cur_time;
2494     }else
2495         key = -1;
2496     if (key == 'q')
2497         return AVERROR_EXIT;
2498     if (key == '+') av_log_set_level(av_log_get_level()+10);
2499     if (key == '-') av_log_set_level(av_log_get_level()-10);
2500     if (key == 's') qp_hist     ^= 1;
2501     if (key == 'h'){
2502         if (do_hex_dump){
2503             do_hex_dump = do_pkt_dump = 0;
2504         } else if(do_pkt_dump){
2505             do_hex_dump = 1;
2506         } else
2507             do_pkt_dump = 1;
2508         av_log_set_level(AV_LOG_DEBUG);
2509     }
2510     if (key == 'c' || key == 'C'){
2511         char buf[4096], target[64], command[256], arg[256] = {0};
2512         double time;
2513         int k, n = 0;
2514         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2515         i = 0;
2516         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2517             if (k > 0)
2518                 buf[i++] = k;
2519         buf[i] = 0;
2520         if (k > 0 &&
2521             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2522             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2523                    target, time, command, arg);
2524             for (i = 0; i < nb_filtergraphs; i++) {
2525                 FilterGraph *fg = filtergraphs[i];
2526                 if (fg->graph) {
2527                     if (time < 0) {
2528                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2529                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2530                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2531                     } else {
2532                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2533                     }
2534                 }
2535             }
2536         } else {
2537             av_log(NULL, AV_LOG_ERROR,
2538                    "Parse error, at least 3 arguments were expected, "
2539                    "only %d given in string '%s'\n", n, buf);
2540         }
2541     }
2542     if (key == 'd' || key == 'D'){
2543         int debug=0;
2544         if(key == 'D') {
2545             debug = input_streams[0]->st->codec->debug<<1;
2546             if(!debug) debug = 1;
2547             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2548                 debug += debug;
2549         }else
2550             if(scanf("%d", &debug)!=1)
2551                 fprintf(stderr,"error parsing debug value\n");
2552         for(i=0;i<nb_input_streams;i++) {
2553             input_streams[i]->st->codec->debug = debug;
2554         }
2555         for(i=0;i<nb_output_streams;i++) {
2556             OutputStream *ost = output_streams[i];
2557             ost->st->codec->debug = debug;
2558         }
2559         if(debug) av_log_set_level(AV_LOG_DEBUG);
2560         fprintf(stderr,"debug=%d\n", debug);
2561     }
2562     if (key == '?'){
2563         fprintf(stderr, "key    function\n"
2564                         "?      show this help\n"
2565                         "+      increase verbosity\n"
2566                         "-      decrease verbosity\n"
2567                         "c      Send command to filtergraph\n"
2568                         "D      cycle through available debug modes\n"
2569                         "h      dump packets/hex press to cycle through the 3 states\n"
2570                         "q      quit\n"
2571                         "s      Show QP histogram\n"
2572         );
2573     }
2574     return 0;
2575 }
2576
2577 #if HAVE_PTHREADS
2578 static void *input_thread(void *arg)
2579 {
2580     InputFile *f = arg;
2581     int ret = 0;
2582
2583     while (!transcoding_finished && ret >= 0) {
2584         AVPacket pkt;
2585         ret = av_read_frame(f->ctx, &pkt);
2586
2587         if (ret == AVERROR(EAGAIN)) {
2588             av_usleep(10000);
2589             ret = 0;
2590             continue;
2591         } else if (ret < 0)
2592             break;
2593
2594         pthread_mutex_lock(&f->fifo_lock);
2595         while (!av_fifo_space(f->fifo))
2596             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2597
2598         av_dup_packet(&pkt);
2599         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2600
2601         pthread_mutex_unlock(&f->fifo_lock);
2602     }
2603
2604     f->finished = 1;
2605     return NULL;
2606 }
2607
2608 static void free_input_threads(void)
2609 {
2610     int i;
2611
2612     if (nb_input_files == 1)
2613         return;
2614
2615     transcoding_finished = 1;
2616
2617     for (i = 0; i < nb_input_files; i++) {
2618         InputFile *f = input_files[i];
2619         AVPacket pkt;
2620
2621         if (!f->fifo || f->joined)
2622             continue;
2623
2624         pthread_mutex_lock(&f->fifo_lock);
2625         while (av_fifo_size(f->fifo)) {
2626             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2627             av_free_packet(&pkt);
2628         }
2629         pthread_cond_signal(&f->fifo_cond);
2630         pthread_mutex_unlock(&f->fifo_lock);
2631
2632         pthread_join(f->thread, NULL);
2633         f->joined = 1;
2634
2635         while (av_fifo_size(f->fifo)) {
2636             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2637             av_free_packet(&pkt);
2638         }
2639         av_fifo_free(f->fifo);
2640     }
2641 }
2642
2643 static int init_input_threads(void)
2644 {
2645     int i, ret;
2646
2647     if (nb_input_files == 1)
2648         return 0;
2649
2650     for (i = 0; i < nb_input_files; i++) {
2651         InputFile *f = input_files[i];
2652
2653         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2654             return AVERROR(ENOMEM);
2655
2656         pthread_mutex_init(&f->fifo_lock, NULL);
2657         pthread_cond_init (&f->fifo_cond, NULL);
2658
2659         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2660             return AVERROR(ret);
2661     }
2662     return 0;
2663 }
2664
2665 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2666 {
2667     int ret = 0;
2668
2669     pthread_mutex_lock(&f->fifo_lock);
2670
2671     if (av_fifo_size(f->fifo)) {
2672         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2673         pthread_cond_signal(&f->fifo_cond);
2674     } else {
2675         if (f->finished)
2676             ret = AVERROR_EOF;
2677         else
2678             ret = AVERROR(EAGAIN);
2679     }
2680
2681     pthread_mutex_unlock(&f->fifo_lock);
2682
2683     return ret;
2684 }
2685 #endif
2686
2687 static int get_input_packet(InputFile *f, AVPacket *pkt)
2688 {
2689 #if HAVE_PTHREADS
2690     if (nb_input_files > 1)
2691         return get_input_packet_mt(f, pkt);
2692 #endif
2693     return av_read_frame(f->ctx, pkt);
2694 }
2695
2696 static int got_eagain(void)
2697 {
2698     int i;
2699     for (i = 0; i < nb_output_streams; i++)
2700         if (output_streams[i]->unavailable)
2701             return 1;
2702     return 0;
2703 }
2704
2705 static void reset_eagain(void)
2706 {
2707     int i;
2708     for (i = 0; i < nb_input_files; i++)
2709         input_files[i]->eagain = 0;
2710     for (i = 0; i < nb_output_streams; i++)
2711         output_streams[i]->unavailable = 0;
2712 }
2713
2714 /*
2715  * Return
2716  * - 0 -- one packet was read and processed
2717  * - AVERROR(EAGAIN) -- no packets were available for selected file,
2718  *   this function should be called again
2719  * - AVERROR_EOF -- this function should not be called again
2720  */
2721 static int process_input(int file_index)
2722 {
2723     InputFile *ifile = input_files[file_index];
2724     AVFormatContext *is;
2725     InputStream *ist;
2726     AVPacket pkt;
2727     int ret, i, j;
2728
2729     is  = ifile->ctx;
2730     ret = get_input_packet(ifile, &pkt);
2731
2732     if (ret == AVERROR(EAGAIN)) {
2733         ifile->eagain = 1;
2734         return ret;
2735     }
2736     if (ret < 0) {
2737         if (ret != AVERROR_EOF) {
2738             print_error(is->filename, ret);
2739             if (exit_on_error)
2740                 exit(1);
2741         }
2742         ifile->eof_reached = 1;
2743
2744         for (i = 0; i < ifile->nb_streams; i++) {
2745             ist = input_streams[ifile->ist_index + i];
2746             if (ist->decoding_needed)
2747                 output_packet(ist, NULL);
2748
2749             /* mark all outputs that don't go through lavfi as finished */
2750             for (j = 0; j < nb_output_streams; j++) {
2751                 OutputStream *ost = output_streams[j];
2752
2753                 if (ost->source_index == ifile->ist_index + i &&
2754                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2755                     close_output_stream(ost);
2756             }
2757         }
2758
2759         return AVERROR(EAGAIN);
2760     }
2761
2762     reset_eagain();
2763
2764     if (do_pkt_dump) {
2765         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2766                          is->streams[pkt.stream_index]);
2767     }
2768     /* the following test is needed in case new streams appear
2769        dynamically in stream : we ignore them */
2770     if (pkt.stream_index >= ifile->nb_streams) {
2771         report_new_stream(file_index, &pkt);
2772         goto discard_packet;
2773     }
2774
2775     ist = input_streams[ifile->ist_index + pkt.stream_index];
2776     if (ist->discard)
2777         goto discard_packet;
2778
2779     if (debug_ts) {
2780         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
2781                "next_dts:%s next_dts_time:%s next_pts:%s next_pts_time:%s pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%s off_time:%s\n",
2782                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2783                av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
2784                av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
2785                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2786                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2787                av_ts2str(input_files[ist->file_index]->ts_offset),
2788                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
2789     }
2790
2791     if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
2792         int64_t stime, stime2;
2793         // Correcting starttime based on the enabled streams
2794         // FIXME this ideally should be done before the first use of starttime but we do not know which are the enabled streams at that point.
2795         //       so we instead do it here as part of discontinuity handling
2796         if (   ist->next_dts == AV_NOPTS_VALUE
2797             && ifile->ts_offset == -is->start_time
2798             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2799             int64_t new_start_time = INT64_MAX;
2800             for (i=0; i<is->nb_streams; i++) {
2801                 AVStream *st = is->streams[i];
2802                 if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
2803                     continue;
2804                 new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
2805             }
2806             if (new_start_time > is->start_time) {
2807                 av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
2808                 ifile->ts_offset = -new_start_time;
2809             }
2810         }
2811
2812         stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
2813         stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
2814         ist->wrap_correction_done = 1;
2815
2816         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2817             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
2818             ist->wrap_correction_done = 0;
2819         }
2820         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2821             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
2822             ist->wrap_correction_done = 0;
2823         }
2824     }
2825
2826     if (pkt.dts != AV_NOPTS_VALUE)
2827         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2828     if (pkt.pts != AV_NOPTS_VALUE)
2829         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2830
2831     if (pkt.pts != AV_NOPTS_VALUE)
2832         pkt.pts *= ist->ts_scale;
2833     if (pkt.dts != AV_NOPTS_VALUE)
2834         pkt.dts *= ist->ts_scale;
2835
2836     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2837         !copy_ts) {
2838         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2839         int64_t delta   = pkt_dts - ist->next_dts;
2840         if (is->iformat->flags & AVFMT_TS_DISCONT) {
2841         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2842             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2843                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2844             pkt_dts+1<ist->pts){
2845             ifile->ts_offset -= delta;
2846             av_log(NULL, AV_LOG_DEBUG,
2847                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2848                    delta, ifile->ts_offset);
2849             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2850             if (pkt.pts != AV_NOPTS_VALUE)
2851                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2852         }
2853         } else {
2854             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2855                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2856                ) {
2857                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
2858                 pkt.dts = AV_NOPTS_VALUE;
2859             }
2860             if (pkt.pts != AV_NOPTS_VALUE){
2861                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
2862                 delta   = pkt_pts - ist->next_dts;
2863                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2864                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2865                    ) {
2866                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
2867                     pkt.pts = AV_NOPTS_VALUE;
2868                 }
2869             }
2870         }
2871     }
2872
2873     if (debug_ts) {
2874         av_log(NULL, AV_LOG_INFO, "demuxer+ffmpeg -> ist_index:%d type:%s pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s off:%s off_time:%s\n",
2875                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2876                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2877                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2878                av_ts2str(input_files[ist->file_index]->ts_offset),
2879                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
2880     }
2881
2882     sub2video_heartbeat(ist, pkt.pts);
2883
2884     ret = output_packet(ist, &pkt);
2885     if (ret < 0) {
2886         char buf[128];
2887         av_strerror(ret, buf, sizeof(buf));
2888         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
2889                 ist->file_index, ist->st->index, buf);
2890         if (exit_on_error)
2891             exit(1);
2892     }
2893
2894 discard_packet:
2895     av_free_packet(&pkt);
2896
2897     return 0;
2898 }
2899
2900 /**
2901  * Perform a step of transcoding for the specified filter graph.
2902  *
2903  * @param[in]  graph     filter graph to consider
2904  * @param[out] best_ist  input stream where a frame would allow to continue
2905  * @return  0 for success, <0 for error
2906  */
2907 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
2908 {
2909     int i, ret;
2910     int nb_requests, nb_requests_max = 0;
2911     InputFilter *ifilter;
2912     InputStream *ist;
2913
2914     *best_ist = NULL;
2915     ret = avfilter_graph_request_oldest(graph->graph);
2916     if (ret >= 0)
2917         return reap_filters();
2918
2919     if (ret == AVERROR_EOF) {
2920         ret = reap_filters();
2921         for (i = 0; i < graph->nb_outputs; i++)
2922             close_output_stream(graph->outputs[i]->ost);
2923         return ret;
2924     }
2925     if (ret != AVERROR(EAGAIN))
2926         return ret;
2927
2928     for (i = 0; i < graph->nb_inputs; i++) {
2929         ifilter = graph->inputs[i];
2930         ist = ifilter->ist;
2931         if (input_files[ist->file_index]->eagain ||
2932             input_files[ist->file_index]->eof_reached)
2933             continue;
2934         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
2935         if (nb_requests > nb_requests_max) {
2936             nb_requests_max = nb_requests;
2937             *best_ist = ist;
2938         }
2939     }
2940
2941     if (!*best_ist)
2942         for (i = 0; i < graph->nb_outputs; i++)
2943             graph->outputs[i]->ost->unavailable = 1;
2944
2945     return 0;
2946 }
2947
2948 /**
2949  * Run a single step of transcoding.
2950  *
2951  * @return  0 for success, <0 for error
2952  */
2953 static int transcode_step(void)
2954 {
2955     OutputStream *ost;
2956     InputStream  *ist;
2957     int ret;
2958
2959     ost = choose_output();
2960     if (!ost) {
2961         if (got_eagain()) {
2962             reset_eagain();
2963             av_usleep(10000);
2964             return 0;
2965         }
2966         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
2967         return AVERROR_EOF;
2968     }
2969
2970     if (ost->filter) {
2971         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
2972             return ret;
2973         if (!ist)
2974             return 0;
2975     } else {
2976         av_assert0(ost->source_index >= 0);
2977         ist = input_streams[ost->source_index];
2978     }
2979
2980     ret = process_input(ist->file_index);
2981     if (ret == AVERROR(EAGAIN)) {
2982         if (input_files[ist->file_index]->eagain)
2983             ost->unavailable = 1;
2984         return 0;
2985     }
2986     if (ret < 0)
2987         return ret == AVERROR_EOF ? 0 : ret;
2988
2989     return reap_filters();
2990 }
2991
2992 /*
2993  * The following code is the main loop of the file converter
2994  */
2995 static int transcode(void)
2996 {
2997     int ret, i;
2998     AVFormatContext *os;
2999     OutputStream *ost;
3000     InputStream *ist;
3001     int64_t timer_start;
3002
3003     ret = transcode_init();
3004     if (ret < 0)
3005         goto fail;
3006
3007     if (stdin_interaction) {
3008         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3009     }
3010
3011     timer_start = av_gettime();
3012
3013 #if HAVE_PTHREADS
3014     if ((ret = init_input_threads()) < 0)
3015         goto fail;
3016 #endif
3017
3018     while (!received_sigterm) {
3019         int64_t cur_time= av_gettime();
3020
3021         /* if 'q' pressed, exits */
3022         if (stdin_interaction)
3023             if (check_keyboard_interaction(cur_time) < 0)
3024                 break;
3025
3026         /* check if there's any stream where output is still needed */
3027         if (!need_output()) {
3028             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3029             break;
3030         }
3031
3032         ret = transcode_step();
3033         if (ret < 0) {
3034             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
3035                 continue;
3036
3037             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
3038             break;
3039         }
3040
3041         /* dump report by using the output first video and audio streams */
3042         print_report(0, timer_start, cur_time);
3043     }
3044 #if HAVE_PTHREADS
3045     free_input_threads();
3046 #endif
3047
3048     /* at the end of stream, we must flush the decoder buffers */
3049     for (i = 0; i < nb_input_streams; i++) {
3050         ist = input_streams[i];
3051         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3052             output_packet(ist, NULL);
3053         }
3054     }
3055     flush_encoders();
3056
3057     term_exit();
3058
3059     /* write the trailer if needed and close file */
3060     for (i = 0; i < nb_output_files; i++) {
3061         os = output_files[i]->ctx;
3062         av_write_trailer(os);
3063     }
3064
3065     /* dump report by using the first video and audio streams */
3066     print_report(1, timer_start, av_gettime());
3067
3068     /* close each encoder */
3069     for (i = 0; i < nb_output_streams; i++) {
3070         ost = output_streams[i];
3071         if (ost->encoding_needed) {
3072             av_freep(&ost->st->codec->stats_in);
3073             avcodec_close(ost->st->codec);
3074         }
3075     }
3076
3077     /* close each decoder */
3078     for (i = 0; i < nb_input_streams; i++) {
3079         ist = input_streams[i];
3080         if (ist->decoding_needed) {
3081             avcodec_close(ist->st->codec);
3082         }
3083     }
3084
3085     /* finished ! */
3086     ret = 0;
3087
3088  fail:
3089 #if HAVE_PTHREADS
3090     free_input_threads();
3091 #endif
3092
3093     if (output_streams) {
3094         for (i = 0; i < nb_output_streams; i++) {
3095             ost = output_streams[i];
3096             if (ost) {
3097                 if (ost->stream_copy)
3098                     av_freep(&ost->st->codec->extradata);
3099                 if (ost->logfile) {
3100                     fclose(ost->logfile);
3101                     ost->logfile = NULL;
3102                 }
3103                 av_freep(&ost->st->codec->subtitle_header);
3104                 av_free(ost->forced_kf_pts);
3105                 av_dict_free(&ost->opts);
3106             }
3107         }
3108     }
3109     return ret;
3110 }
3111
3112
3113 static int64_t getutime(void)
3114 {
3115 #if HAVE_GETRUSAGE
3116     struct rusage rusage;
3117
3118     getrusage(RUSAGE_SELF, &rusage);
3119     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3120 #elif HAVE_GETPROCESSTIMES
3121     HANDLE proc;
3122     FILETIME c, e, k, u;
3123     proc = GetCurrentProcess();
3124     GetProcessTimes(proc, &c, &e, &k, &u);
3125     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3126 #else
3127     return av_gettime();
3128 #endif
3129 }
3130
3131 static int64_t getmaxrss(void)
3132 {
3133 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3134     struct rusage rusage;
3135     getrusage(RUSAGE_SELF, &rusage);
3136     return (int64_t)rusage.ru_maxrss * 1024;
3137 #elif HAVE_GETPROCESSMEMORYINFO
3138     HANDLE proc;
3139     PROCESS_MEMORY_COUNTERS memcounters;
3140     proc = GetCurrentProcess();
3141     memcounters.cb = sizeof(memcounters);
3142     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3143     return memcounters.PeakPagefileUsage;
3144 #else
3145     return 0;
3146 #endif
3147 }
3148
3149 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3150 {
3151 }
3152
3153 int main(int argc, char **argv)
3154 {
3155     int ret;
3156     int64_t ti;
3157
3158     atexit(exit_program);
3159
3160     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3161
3162     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3163     parse_loglevel(argc, argv, options);
3164
3165     if(argc>1 && !strcmp(argv[1], "-d")){
3166         run_as_daemon=1;
3167         av_log_set_callback(log_callback_null);
3168         argc--;
3169         argv++;
3170     }
3171
3172     avcodec_register_all();
3173 #if CONFIG_AVDEVICE
3174     avdevice_register_all();
3175 #endif
3176     avfilter_register_all();
3177     av_register_all();
3178     avformat_network_init();
3179
3180     show_banner(argc, argv, options);
3181
3182     term_init();
3183
3184     /* parse options and open all input/output files */
3185     ret = ffmpeg_parse_options(argc, argv);
3186     if (ret < 0)
3187         exit(1);
3188
3189     if (nb_output_files <= 0 && nb_input_files == 0) {
3190         show_usage();
3191         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3192         exit(1);
3193     }
3194
3195     /* file converter / grab */
3196     if (nb_output_files <= 0) {
3197         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3198         exit(1);
3199     }
3200
3201 //     if (nb_input_files == 0) {
3202 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3203 //         exit(1);
3204 //     }
3205
3206     current_time = ti = getutime();
3207     if (transcode() < 0)
3208         exit(1);
3209     ti = getutime() - ti;
3210     if (do_benchmark) {
3211         int maxrss = getmaxrss() / 1024;
3212         printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss);
3213     }
3214
3215     exit(0);
3216     return 0;
3217 }