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 const char *const forced_keyframes_const_names[] = {
 113     "n",
 114     "n_forced",
 115     "prev_forced_n",
 116     "prev_forced_t",
 117     "t",
 118     NULL
 119 };
 120
 121 static void do_video_stats(OutputStream *ost, int frame_size);
 122 static int64_t getutime(void);
 123 static int64_t getmaxrss(void);
 124
 125 static int run_as_daemon  = 0;
 126 static int64_t video_size = 0;
 127 static int64_t audio_size = 0;
 128 static int64_t subtitle_size = 0;
 129 static int64_t extra_size = 0;
 130 static int nb_frames_dup = 0;
 131 static int nb_frames_drop = 0;
 132
 133 static int current_time;
 134 AVIOContext *progress_avio = NULL;
 135
 136 static uint8_t *subtitle_out;
 137
 138 #if HAVE_PTHREADS
 139 /* signal to input threads that they should exit; set by the main thread */
 140 static int transcoding_finished;
 141 #endif
 142
 143 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
 144
 145 InputStream **input_streams = NULL;
 146 int        nb_input_streams = 0;
 147 InputFile   **input_files   = NULL;
 148 int        nb_input_files   = 0;
 149
 150 OutputStream **output_streams = NULL;
 151 int         nb_output_streams = 0;
 152 OutputFile   **output_files   = NULL;
 153 int         nb_output_files   = 0;
 154
 155 FilterGraph **filtergraphs;
 156 int        nb_filtergraphs;
 157
 158 #if HAVE_TERMIOS_H
 159
 160 /* init terminal so that we can grab keys */
 161 static struct termios oldtty;
 162 static int restore_tty;
 163 #endif
 164
 165
 166 /* sub2video hack:
 167    Convert subtitles to video with alpha to insert them in filter graphs.
 168    This is a temporary solution until libavfilter gets real subtitles support.
 169  */
 170
 171 static int sub2video_get_blank_frame(InputStream *ist)
 172 {
 173     int ret;
 174     AVFrame *frame = ist->sub2video.frame;
 175
 176     av_frame_unref(frame);
 177     ist->sub2video.frame->width  = ist->sub2video.w;
 178     ist->sub2video.frame->height = ist->sub2video.h;
 179     ist->sub2video.frame->format = AV_PIX_FMT_RGB32;
 180     if ((ret = av_frame_get_buffer(frame, 32)) < 0)
 181         return ret;
 182     memset(frame->data[0], 0, frame->height * frame->linesize[0]);
 183     return 0;
 184 }
 185
 186 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
 187                                 AVSubtitleRect *r)
 188 {
 189     uint32_t *pal, *dst2;
 190     uint8_t *src, *src2;
 191     int x, y;
 192
 193     if (r->type != SUBTITLE_BITMAP) {
 194         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
 195         return;
 196     }
 197     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
 198         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
 199         return;
 200     }
 201
 202     dst += r->y * dst_linesize + r->x * 4;
 203     src = r->pict.data[0];
 204     pal = (uint32_t *)r->pict.data[1];
 205     for (y = 0; y < r->h; y++) {
 206         dst2 = (uint32_t *)dst;
 207         src2 = src;
 208         for (x = 0; x < r->w; x++)
 209             *(dst2++) = pal[*(src2++)];
 210         dst += dst_linesize;
 211         src += r->pict.linesize[0];
 212     }
 213 }
 214
 215 static void sub2video_push_ref(InputStream *ist, int64_t pts)
 216 {
 217     AVFrame *frame = ist->sub2video.frame;
 218     int i;
 219
 220     av_assert1(frame->data[0]);
 221     ist->sub2video.last_pts = frame->pts = pts;
 222     for (i = 0; i < ist->nb_filters; i++)
 223         av_buffersrc_add_frame_flags(ist->filters[i]->filter, frame,
 224                                      AV_BUFFERSRC_FLAG_KEEP_REF |
 225                                      AV_BUFFERSRC_FLAG_PUSH);
 226 }
 227
 228 static void sub2video_update(InputStream *ist, AVSubtitle *sub)
 229 {
 230     int w = ist->sub2video.w, h = ist->sub2video.h;
 231     AVFrame *frame = ist->sub2video.frame;
 232     int8_t *dst;
 233     int     dst_linesize;
 234     int num_rects, i;
 235     int64_t pts, end_pts;
 236
 237     if (!frame)
 238         return;
 239     if (sub) {
 240         pts       = av_rescale_q(sub->pts + sub->start_display_time * 1000,
 241                                  AV_TIME_BASE_Q, ist->st->time_base);
 242         end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000,
 243                                  AV_TIME_BASE_Q, ist->st->time_base);
 244         num_rects = sub->num_rects;
 245     } else {
 246         pts       = ist->sub2video.end_pts;
 247         end_pts   = INT64_MAX;
 248         num_rects = 0;
 249     }
 250     if (sub2video_get_blank_frame(ist) < 0) {
 251         av_log(ist->st->codec, AV_LOG_ERROR,
 252                "Impossible to get a blank canvas.\n");
 253         return;
 254     }
 255     dst          = frame->data    [0];
 256     dst_linesize = frame->linesize[0];
 257     for (i = 0; i < num_rects; i++)
 258         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
 259     sub2video_push_ref(ist, pts);
 260     ist->sub2video.end_pts = end_pts;
 261 }
 262
 263 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
 264 {
 265     InputFile *infile = input_files[ist->file_index];
 266     int i, j, nb_reqs;
 267     int64_t pts2;
 268
 269     /* When a frame is read from a file, examine all sub2video streams in
 270        the same file and send the sub2video frame again. Otherwise, decoded
 271        video frames could be accumulating in the filter graph while a filter
 272        (possibly overlay) is desperately waiting for a subtitle frame. */
 273     for (i = 0; i < infile->nb_streams; i++) {
 274         InputStream *ist2 = input_streams[infile->ist_index + i];
 275         if (!ist2->sub2video.frame)
 276             continue;
 277         /* subtitles seem to be usually muxed ahead of other streams;
 278            if not, substracting a larger time here is necessary */
 279         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
 280         /* do not send the heartbeat frame if the subtitle is already ahead */
 281         if (pts2 <= ist2->sub2video.last_pts)
 282             continue;
 283         if (pts2 >= ist2->sub2video.end_pts || !ist2->sub2video.frame->data[0])
 284             sub2video_update(ist2, NULL);
 285         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
 286             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
 287         if (nb_reqs)
 288             sub2video_push_ref(ist2, pts2);
 289     }
 290 }
 291
 292 static void sub2video_flush(InputStream *ist)
 293 {
 294     int i;
 295
 296     for (i = 0; i < ist->nb_filters; i++)
 297         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
 298 }
 299
 300 /* end of sub2video hack */
 301
 302 void term_exit(void)
 303 {
 304     av_log(NULL, AV_LOG_QUIET, "%s", "");
 305 #if HAVE_TERMIOS_H
 306     if(restore_tty)
 307         tcsetattr (0, TCSANOW, &oldtty);
 308 #endif
 309 }
 310
 311 static volatile int received_sigterm = 0;
 312 static volatile int received_nb_signals = 0;
 313
 314 static void
 315 sigterm_handler(int sig)
 316 {
 317     received_sigterm = sig;
 318     received_nb_signals++;
 319     term_exit();
 320     if(received_nb_signals > 3)
 321         exit(123);
 322 }
 323
 324 void term_init(void)
 325 {
 326 #if HAVE_TERMIOS_H
 327     if(!run_as_daemon){
 328         struct termios tty;
 329         int istty = 1;
 330 #if HAVE_ISATTY
 331         istty = isatty(0) && isatty(2);
 332 #endif
 333         if (istty && tcgetattr (0, &tty) == 0) {
 334             oldtty = tty;
 335             restore_tty = 1;
 336             atexit(term_exit);
 337
 338             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
 339                              |INLCR|IGNCR|ICRNL|IXON);
 340             tty.c_oflag |= OPOST;
 341             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
 342             tty.c_cflag &= ~(CSIZE|PARENB);
 343             tty.c_cflag |= CS8;
 344             tty.c_cc[VMIN] = 1;
 345             tty.c_cc[VTIME] = 0;
 346
 347             tcsetattr (0, TCSANOW, &tty);
 348         }
 349         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
 350     }
 351 #endif
 352     avformat_network_deinit();
 353
 354     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
 355     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
 356 #ifdef SIGXCPU
 357     signal(SIGXCPU, sigterm_handler);
 358 #endif
 359 }
 360
 361 /* read a key without blocking */
 362 static int read_key(void)
 363 {
 364     unsigned char ch;
 365 #if HAVE_TERMIOS_H
 366     int n = 1;
 367     struct timeval tv;
 368     fd_set rfds;
 369
 370     FD_ZERO(&rfds);
 371     FD_SET(0, &rfds);
 372     tv.tv_sec = 0;
 373     tv.tv_usec = 0;
 374     n = select(1, &rfds, NULL, NULL, &tv);
 375     if (n > 0) {
 376         n = read(0, &ch, 1);
 377         if (n == 1)
 378             return ch;
 379
 380         return n;
 381     }
 382 #elif HAVE_KBHIT
 383 #    if HAVE_PEEKNAMEDPIPE
 384     static int is_pipe;
 385     static HANDLE input_handle;
 386     DWORD dw, nchars;
 387     if(!input_handle){
 388         input_handle = GetStdHandle(STD_INPUT_HANDLE);
 389         is_pipe = !GetConsoleMode(input_handle, &dw);
 390     }
 391
 392     if (stdin->_cnt > 0) {
 393         read(0, &ch, 1);
 394         return ch;
 395     }
 396     if (is_pipe) {
 397         /* When running under a GUI, you will end here. */
 398         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
 399             // input pipe may have been closed by the program that ran ffmpeg
 400             return -1;
 401         }
 402         //Read it
 403         if(nchars != 0) {
 404             read(0, &ch, 1);
 405             return ch;
 406         }else{
 407             return -1;
 408         }
 409     }
 410 #    endif
 411     if(kbhit())
 412         return(getch());
 413 #endif
 414     return -1;
 415 }
 416
 417 static int decode_interrupt_cb(void *ctx)
 418 {
 419     return received_nb_signals > 1;
 420 }
 421
 422 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
 423
 424 static void exit_program(void)
 425 {
 426     int i, j;
 427
 428     if (do_benchmark) {
 429         int maxrss = getmaxrss() / 1024;
 430         printf("bench: maxrss=%ikB\n", maxrss);
 431     }
 432
 433     for (i = 0; i < nb_filtergraphs; i++) {
 434         avfilter_graph_free(&filtergraphs[i]->graph);
 435         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
 436             av_freep(&filtergraphs[i]->inputs[j]->name);
 437             av_freep(&filtergraphs[i]->inputs[j]);
 438         }
 439         av_freep(&filtergraphs[i]->inputs);
 440         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
 441             av_freep(&filtergraphs[i]->outputs[j]->name);
 442             av_freep(&filtergraphs[i]->outputs[j]);
 443         }
 444         av_freep(&filtergraphs[i]->outputs);
 445         av_freep(&filtergraphs[i]->graph_desc);
 446         av_freep(&filtergraphs[i]);
 447     }
 448     av_freep(&filtergraphs);
 449
 450     av_freep(&subtitle_out);
 451
 452     /* close files */
 453     for (i = 0; i < nb_output_files; i++) {
 454         AVFormatContext *s = output_files[i]->ctx;
 455         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
 456             avio_close(s->pb);
 457         avformat_free_context(s);
 458         av_dict_free(&output_files[i]->opts);
 459         av_freep(&output_files[i]);
 460     }
 461     for (i = 0; i < nb_output_streams; i++) {
 462         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
 463         while (bsfc) {
 464             AVBitStreamFilterContext *next = bsfc->next;
 465             av_bitstream_filter_close(bsfc);
 466             bsfc = next;
 467         }
 468         output_streams[i]->bitstream_filters = NULL;
 469         avcodec_free_frame(&output_streams[i]->filtered_frame);
 470
 471         av_freep(&output_streams[i]->forced_keyframes);
 472         av_expr_free(output_streams[i]->forced_keyframes_pexpr);
 473         av_freep(&output_streams[i]->avfilter);
 474         av_freep(&output_streams[i]->logfile_prefix);
 475         av_freep(&output_streams[i]);
 476     }
 477     for (i = 0; i < nb_input_files; i++) {
 478         avformat_close_input(&input_files[i]->ctx);
 479         av_freep(&input_files[i]);
 480     }
 481     for (i = 0; i < nb_input_streams; i++) {
 482         av_frame_free(&input_streams[i]->decoded_frame);
 483         av_frame_free(&input_streams[i]->filter_frame);
 484         av_dict_free(&input_streams[i]->opts);
 485         avsubtitle_free(&input_streams[i]->prev_sub.subtitle);
 486         av_frame_free(&input_streams[i]->sub2video.frame);
 487         av_freep(&input_streams[i]->filters);
 488         av_freep(&input_streams[i]);
 489     }
 490
 491     if (vstats_file)
 492         fclose(vstats_file);
 493     av_free(vstats_filename);
 494
 495     av_freep(&input_streams);
 496     av_freep(&input_files);
 497     av_freep(&output_streams);
 498     av_freep(&output_files);
 499
 500     uninit_opts();
 501
 502     avfilter_uninit();
 503     avformat_network_deinit();
 504
 505     if (received_sigterm) {
 506         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
 507                (int) received_sigterm);
 508     }
 509 }
 510
 511 void assert_avoptions(AVDictionary *m)
 512 {
 513     AVDictionaryEntry *t;
 514     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
 515         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
 516         exit(1);
 517     }
 518 }
 519
 520 static void abort_codec_experimental(AVCodec *c, int encoder)
 521 {
 522     exit(1);
 523 }
 524
 525 static void update_benchmark(const char *fmt, ...)
 526 {
 527     if (do_benchmark_all) {
 528         int64_t t = getutime();
 529         va_list va;
 530         char buf[1024];
 531
 532         if (fmt) {
 533             va_start(va, fmt);
 534             vsnprintf(buf, sizeof(buf), fmt, va);
 535             va_end(va);
 536             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
 537         }
 538         current_time = t;
 539     }
 540 }
 541
 542 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
 543 {
 544     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
 545     AVCodecContext          *avctx = ost->st->codec;
 546     int ret;
 547
 548     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
 549         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
 550         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
 551
 552     if ((avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) && pkt->dts != AV_NOPTS_VALUE) {
 553         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
 554         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
 555             av_log(s, max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG,
 556                    "st:%d PTS: %"PRId64" DTS: %"PRId64" < %"PRId64" invalid, clipping\n", pkt->stream_index, pkt->pts, pkt->dts, max);
 557             if(pkt->pts >= pkt->dts)
 558                 pkt->pts = FFMAX(pkt->pts, max);
 559             pkt->dts = max;
 560         }
 561     }
 562
 563     /*
 564      * Audio encoders may split the packets --  #frames in != #packets out.
 565      * But there is no reordering, so we can limit the number of output packets
 566      * by simply dropping them here.
 567      * Counting encoded video frames needs to be done separately because of
 568      * reordering, see do_video_out()
 569      */
 570     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
 571         if (ost->frame_number >= ost->max_frames) {
 572             av_free_packet(pkt);
 573             return;
 574         }
 575         ost->frame_number++;
 576     }
 577
 578     while (bsfc) {
 579         AVPacket new_pkt = *pkt;
 580         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
 581                                            &new_pkt.data, &new_pkt.size,
 582                                            pkt->data, pkt->size,
 583                                            pkt->flags & AV_PKT_FLAG_KEY);
 584         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
 585             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
 586             if(t) {
 587                 memcpy(t, new_pkt.data, new_pkt.size);
 588                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
 589                 new_pkt.data = t;
 590                 new_pkt.buf = NULL;
 591                 a = 1;
 592             } else
 593                 a = AVERROR(ENOMEM);
 594         }
 595         if (a > 0) {
 596             av_free_packet(pkt);
 597             new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
 598                                            av_buffer_default_free, NULL, 0);
 599             if (!new_pkt.buf)
 600                 exit(1);
 601         } else if (a < 0) {
 602             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
 603                    bsfc->filter->name, pkt->stream_index,
 604                    avctx->codec ? avctx->codec->name : "copy");
 605             print_error("", a);
 606             if (exit_on_error)
 607                 exit(1);
 608         }
 609         *pkt = new_pkt;
 610
 611         bsfc = bsfc->next;
 612     }
 613
 614     pkt->stream_index = ost->index;
 615
 616     if (debug_ts) {
 617         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
 618                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
 619                 av_get_media_type_string(ost->st->codec->codec_type),
 620                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
 621                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
 622                 pkt->size
 623               );
 624     }
 625
 626     ret = av_interleaved_write_frame(s, pkt);
 627     if (ret < 0) {
 628         print_error("av_interleaved_write_frame()", ret);
 629         exit(1);
 630     }
 631 }
 632
 633 static void close_output_stream(OutputStream *ost)
 634 {
 635     OutputFile *of = output_files[ost->file_index];
 636
 637     ost->finished = 1;
 638     if (of->shortest) {
 639         int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, AV_TIME_BASE_Q);
 640         of->recording_time = FFMIN(of->recording_time, end);
 641     }
 642 }
 643
 644 static int check_recording_time(OutputStream *ost)
 645 {
 646     OutputFile *of = output_files[ost->file_index];
 647
 648     if (of->recording_time != INT64_MAX &&
 649         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
 650                       AV_TIME_BASE_Q) >= 0) {
 651         close_output_stream(ost);
 652         return 0;
 653     }
 654     return 1;
 655 }
 656
 657 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
 658                          AVFrame *frame)
 659 {
 660     AVCodecContext *enc = ost->st->codec;
 661     AVPacket pkt;
 662     int got_packet = 0;
 663
 664     av_init_packet(&pkt);
 665     pkt.data = NULL;
 666     pkt.size = 0;
 667
 668     if (!check_recording_time(ost))
 669         return;
 670
 671     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
 672         frame->pts = ost->sync_opts;
 673     ost->sync_opts = frame->pts + frame->nb_samples;
 674
 675     av_assert0(pkt.size || !pkt.data);
 676     update_benchmark(NULL);
 677     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
 678         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
 679         exit(1);
 680     }
 681     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
 682
 683     if (got_packet) {
 684         if (pkt.pts != AV_NOPTS_VALUE)
 685             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
 686         if (pkt.dts != AV_NOPTS_VALUE)
 687             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
 688         if (pkt.duration > 0)
 689             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
 690
 691         if (debug_ts) {
 692             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
 693                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
 694                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
 695                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
 696         }
 697
 698         audio_size += pkt.size;
 699         write_frame(s, &pkt, ost);
 700
 701         av_free_packet(&pkt);
 702     }
 703 }
 704
 705 static void do_subtitle_out(AVFormatContext *s,
 706                             OutputStream *ost,
 707                             InputStream *ist,
 708                             AVSubtitle *sub)
 709 {
 710     int subtitle_out_max_size = 1024 * 1024;
 711     int subtitle_out_size, nb, i;
 712     AVCodecContext *enc;
 713     AVPacket pkt;
 714     int64_t pts;
 715
 716     if (sub->pts == AV_NOPTS_VALUE) {
 717         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
 718         if (exit_on_error)
 719             exit(1);
 720         return;
 721     }
 722
 723     enc = ost->st->codec;
 724
 725     if (!subtitle_out) {
 726         subtitle_out = av_malloc(subtitle_out_max_size);
 727     }
 728
 729     /* Note: DVB subtitle need one packet to draw them and one other
 730        packet to clear them */
 731     /* XXX: signal it in the codec context ? */
 732     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
 733         nb = 2;
 734     else
 735         nb = 1;
 736
 737     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
 738     pts = sub->pts - output_files[ost->file_index]->start_time;
 739     for (i = 0; i < nb; i++) {
 740         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
 741         if (!check_recording_time(ost))
 742             return;
 743
 744         sub->pts = pts;
 745         // start_display_time is required to be 0
 746         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
 747         sub->end_display_time  -= sub->start_display_time;
 748         sub->start_display_time = 0;
 749         if (i == 1)
 750             sub->num_rects = 0;
 751         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
 752                                                     subtitle_out_max_size, sub);
 753         if (subtitle_out_size < 0) {
 754             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
 755             exit(1);
 756         }
 757
 758         av_init_packet(&pkt);
 759         pkt.data = subtitle_out;
 760         pkt.size = subtitle_out_size;
 761         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
 762         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
 763         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
 764             /* XXX: the pts correction is handled here. Maybe handling
 765                it in the codec would be better */
 766             if (i == 0)
 767                 pkt.pts += 90 * sub->start_display_time;
 768             else
 769                 pkt.pts += 90 * sub->end_display_time;
 770         }
 771         subtitle_size += pkt.size;
 772         write_frame(s, &pkt, ost);
 773     }
 774 }
 775
 776 static void do_video_out(AVFormatContext *s,
 777                          OutputStream *ost,
 778                          AVFrame *in_picture)
 779 {
 780     int ret, format_video_sync;
 781     AVPacket pkt;
 782     AVCodecContext *enc = ost->st->codec;
 783     int nb_frames, i;
 784     double sync_ipts, delta;
 785     double duration = 0;
 786     int frame_size = 0;
 787     InputStream *ist = NULL;
 788
 789     if (ost->source_index >= 0)
 790         ist = input_streams[ost->source_index];
 791
 792     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
 793         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
 794
 795     sync_ipts = in_picture->pts;
 796     delta = sync_ipts - ost->sync_opts + duration;
 797
 798     /* by default, we output a single frame */
 799     nb_frames = 1;
 800
 801     format_video_sync = video_sync_method;
 802     if (format_video_sync == VSYNC_AUTO)
 803         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
 804
 805     switch (format_video_sync) {
 806     case VSYNC_CFR:
 807         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
 808         if (delta < -1.1)
 809             nb_frames = 0;
 810         else if (delta > 1.1)
 811             nb_frames = lrintf(delta);
 812         break;
 813     case VSYNC_VFR:
 814         if (delta <= -0.6)
 815             nb_frames = 0;
 816         else if (delta > 0.6)
 817             ost->sync_opts = lrint(sync_ipts);
 818         break;
 819     case VSYNC_DROP:
 820     case VSYNC_PASSTHROUGH:
 821         ost->sync_opts = lrint(sync_ipts);
 822         break;
 823     default:
 824         av_assert0(0);
 825     }
 826
 827     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
 828     if (nb_frames == 0) {
 829         nb_frames_drop++;
 830         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
 831         return;
 832     } else if (nb_frames > 1) {
 833         if (nb_frames > dts_error_threshold * 30) {
 834             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
 835             nb_frames_drop++;
 836             return;
 837         }
 838         nb_frames_dup += nb_frames - 1;
 839         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
 840     }
 841
 842   /* duplicates frame if needed */
 843   for (i = 0; i < nb_frames; i++) {
 844     av_init_packet(&pkt);
 845     pkt.data = NULL;
 846     pkt.size = 0;
 847
 848     in_picture->pts = ost->sync_opts;
 849
 850     if (!check_recording_time(ost))
 851         return;
 852
 853     if (s->oformat->flags & AVFMT_RAWPICTURE &&
 854         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
 855         /* raw pictures are written as AVPicture structure to
 856            avoid any copies. We support temporarily the older
 857            method. */
 858         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
 859         enc->coded_frame->top_field_first  = in_picture->top_field_first;
 860         if (enc->coded_frame->interlaced_frame)
 861             enc->field_order = enc->coded_frame->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
 862         else
 863             enc->field_order = AV_FIELD_PROGRESSIVE;
 864         pkt.data   = (uint8_t *)in_picture;
 865         pkt.size   =  sizeof(AVPicture);
 866         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
 867         pkt.flags |= AV_PKT_FLAG_KEY;
 868
 869         video_size += pkt.size;
 870         write_frame(s, &pkt, ost);
 871     } else {
 872         int got_packet, forced_keyframe = 0;
 873         double pts_time;
 874
 875         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME) &&
 876             ost->top_field_first >= 0)
 877             in_picture->top_field_first = !!ost->top_field_first;
 878
 879         if (in_picture->interlaced_frame) {
 880             if (enc->codec->id == AV_CODEC_ID_MJPEG)
 881                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
 882             else
 883                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
 884         } else
 885             enc->field_order = AV_FIELD_PROGRESSIVE;
 886
 887         in_picture->quality = ost->st->codec->global_quality;
 888         if (!enc->me_threshold)
 889             in_picture->pict_type = 0;
 890
 891         pts_time = in_picture->pts != AV_NOPTS_VALUE ?
 892             in_picture->pts * av_q2d(enc->time_base) : NAN;
 893         if (ost->forced_kf_index < ost->forced_kf_count &&
 894             in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
 895             ost->forced_kf_index++;
 896             forced_keyframe = 1;
 897         } else if (ost->forced_keyframes_pexpr) {
 898             double res;
 899             ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
 900             res = av_expr_eval(ost->forced_keyframes_pexpr,
 901                                ost->forced_keyframes_expr_const_values, NULL);
 902             av_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
 903                     ost->forced_keyframes_expr_const_values[FKF_N],
 904                     ost->forced_keyframes_expr_const_values[FKF_N_FORCED],
 905                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N],
 906                     ost->forced_keyframes_expr_const_values[FKF_T],
 907                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T],
 908                     res);
 909             if (res) {
 910                 forced_keyframe = 1;
 911                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] =
 912                     ost->forced_keyframes_expr_const_values[FKF_N];
 913                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] =
 914                     ost->forced_keyframes_expr_const_values[FKF_T];
 915                 ost->forced_keyframes_expr_const_values[FKF_N_FORCED] += 1;
 916             }
 917
 918             ost->forced_keyframes_expr_const_values[FKF_N] += 1;
 919         }
 920         if (forced_keyframe) {
 921             in_picture->pict_type = AV_PICTURE_TYPE_I;
 922             av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
 923         }
 924
 925         update_benchmark(NULL);
 926         ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
 927         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
 928         if (ret < 0) {
 929             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
 930             exit(1);
 931         }
 932
 933         if (got_packet) {
 934             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
 935                 pkt.pts = ost->sync_opts;
 936
 937             if (pkt.pts != AV_NOPTS_VALUE)
 938                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
 939             if (pkt.dts != AV_NOPTS_VALUE)
 940                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
 941
 942             if (debug_ts) {
 943                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
 944                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
 945                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
 946                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
 947             }
 948
 949             frame_size = pkt.size;
 950             video_size += pkt.size;
 951             write_frame(s, &pkt, ost);
 952             av_free_packet(&pkt);
 953
 954             /* if two pass, output log */
 955             if (ost->logfile && enc->stats_out) {
 956                 fprintf(ost->logfile, "%s", enc->stats_out);
 957             }
 958         }
 959     }
 960     ost->sync_opts++;
 961     /*
 962      * For video, number of frames in == number of packets out.
 963      * But there may be reordering, so we can't throw away frames on encoder
 964      * flush, we need to limit them here, before they go into encoder.
 965      */
 966     ost->frame_number++;
 967
 968     if (vstats_filename && frame_size)
 969         do_video_stats(ost, frame_size);
 970   }
 971 }
 972
 973 static double psnr(double d)
 974 {
 975     return -10.0 * log(d) / log(10.0);
 976 }
 977
 978 static void do_video_stats(OutputStream *ost, int frame_size)
 979 {
 980     AVCodecContext *enc;
 981     int frame_number;
 982     double ti1, bitrate, avg_bitrate;
 983
 984     /* this is executed just the first time do_video_stats is called */
 985     if (!vstats_file) {
 986         vstats_file = fopen(vstats_filename, "w");
 987         if (!vstats_file) {
 988             perror("fopen");
 989             exit(1);
 990         }
 991     }
 992
 993     enc = ost->st->codec;
 994     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
 995         frame_number = ost->st->nb_frames;
 996         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
 997         if (enc->flags&CODEC_FLAG_PSNR)
 998             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
 999
1000         fprintf(vstats_file,"f_size= %6d ", frame_size);
1001         /* compute pts value */
1002         ti1 = ost->st->pts.val * av_q2d(enc->time_base);
1003         if (ti1 < 0.01)
1004             ti1 = 0.01;
1005
1006         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1007         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1008         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1009                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1010         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1011     }
1012 }
1013
1014 /**
1015  * Get and encode new output from any of the filtergraphs, without causing
1016  * activity.
1017  *
1018  * @return  0 for success, <0 for severe errors
1019  */
1020 static int reap_filters(void)
1021 {
1022     AVFrame *filtered_frame = NULL;
1023     int i;
1024     int64_t frame_pts;
1025
1026     /* Reap all buffers present in the buffer sinks */
1027     for (i = 0; i < nb_output_streams; i++) {
1028         OutputStream *ost = output_streams[i];
1029         OutputFile    *of = output_files[ost->file_index];
1030         int ret = 0;
1031
1032         if (!ost->filter)
1033             continue;
1034
1035         if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1036             return AVERROR(ENOMEM);
1037         } else
1038             avcodec_get_frame_defaults(ost->filtered_frame);
1039         filtered_frame = ost->filtered_frame;
1040
1041         while (1) {
1042             ret = av_buffersink_get_frame_flags(ost->filter->filter, filtered_frame,
1043                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1044             if (ret < 0) {
1045                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1046                     char buf[256];
1047                     av_strerror(ret, buf, sizeof(buf));
1048                     av_log(NULL, AV_LOG_WARNING,
1049                            "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
1050                 }
1051                 break;
1052             }
1053             frame_pts = AV_NOPTS_VALUE;
1054             if (filtered_frame->pts != AV_NOPTS_VALUE) {
1055                 filtered_frame->pts = frame_pts = av_rescale_q(filtered_frame->pts,
1056                                                 ost->filter->filter->inputs[0]->time_base,
1057                                                 ost->st->codec->time_base) -
1058                                     av_rescale_q(of->start_time,
1059                                                 AV_TIME_BASE_Q,
1060                                                 ost->st->codec->time_base);
1061
1062                 if (of->start_time && filtered_frame->pts < 0) {
1063                     av_frame_unref(filtered_frame);
1064                     continue;
1065                 }
1066             }
1067             //if (ost->source_index >= 0)
1068             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1069
1070
1071             switch (ost->filter->filter->inputs[0]->type) {
1072             case AVMEDIA_TYPE_VIDEO:
1073                 filtered_frame->pts = frame_pts;
1074                 if (!ost->frame_aspect_ratio)
1075                     ost->st->codec->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
1076
1077                 do_video_out(of->ctx, ost, filtered_frame);
1078                 break;
1079             case AVMEDIA_TYPE_AUDIO:
1080                 filtered_frame->pts = frame_pts;
1081                 if (!(ost->st->codec->codec->capabilities & CODEC_CAP_PARAM_CHANGE) &&
1082                     ost->st->codec->channels != av_frame_get_channels(filtered_frame)) {
1083                     av_log(NULL, AV_LOG_ERROR,
1084                            "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
1085                     break;
1086                 }
1087                 do_audio_out(of->ctx, ost, filtered_frame);
1088                 break;
1089             default:
1090                 // TODO support subtitle filters
1091                 av_assert0(0);
1092             }
1093
1094             av_frame_unref(filtered_frame);
1095         }
1096     }
1097
1098     return 0;
1099 }
1100
1101 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1102 {
1103     char buf[1024];
1104     AVBPrint buf_script;
1105     OutputStream *ost;
1106     AVFormatContext *oc;
1107     int64_t total_size;
1108     AVCodecContext *enc;
1109     int frame_number, vid, i;
1110     double bitrate;
1111     int64_t pts = INT64_MIN;
1112     static int64_t last_time = -1;
1113     static int qp_histogram[52];
1114     int hours, mins, secs, us;
1115
1116     if (!print_stats && !is_last_report && !progress_avio)
1117         return;
1118
1119     if (!is_last_report) {
1120         if (last_time == -1) {
1121             last_time = cur_time;
1122             return;
1123         }
1124         if ((cur_time - last_time) < 500000)
1125             return;
1126         last_time = cur_time;
1127     }
1128
1129
1130     oc = output_files[0]->ctx;
1131
1132     total_size = avio_size(oc->pb);
1133     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1134         total_size = avio_tell(oc->pb);
1135
1136     buf[0] = '\0';
1137     vid = 0;
1138     av_bprint_init(&buf_script, 0, 1);
1139     for (i = 0; i < nb_output_streams; i++) {
1140         float q = -1;
1141         ost = output_streams[i];
1142         enc = ost->st->codec;
1143         if (!ost->stream_copy && enc->coded_frame)
1144             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1145         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1146             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1147             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1148                        ost->file_index, ost->index, q);
1149         }
1150         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1151             float fps, t = (cur_time-timer_start) / 1000000.0;
1152
1153             frame_number = ost->frame_number;
1154             fps = t > 1 ? frame_number / t : 0;
1155             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1156                      frame_number, fps < 9.95, fps, q);
1157             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1158             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1159             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1160                        ost->file_index, ost->index, q);
1161             if (is_last_report)
1162                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1163             if (qp_hist) {
1164                 int j;
1165                 int qp = lrintf(q);
1166                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1167                     qp_histogram[qp]++;
1168                 for (j = 0; j < 32; j++)
1169                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1170             }
1171             if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1172                 int j;
1173                 double error, error_sum = 0;
1174                 double scale, scale_sum = 0;
1175                 double p;
1176                 char type[3] = { 'Y','U','V' };
1177                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1178                 for (j = 0; j < 3; j++) {
1179                     if (is_last_report) {
1180                         error = enc->error[j];
1181                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1182                     } else {
1183                         error = enc->coded_frame->error[j];
1184                         scale = enc->width * enc->height * 255.0 * 255.0;
1185                     }
1186                     if (j)
1187                         scale /= 4;
1188                     error_sum += error;
1189                     scale_sum += scale;
1190                     p = psnr(error / scale);
1191                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1192                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1193                                ost->file_index, ost->index, type[j] | 32, p);
1194                 }
1195                 p = psnr(error_sum / scale_sum);
1196                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1197                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1198                            ost->file_index, ost->index, p);
1199             }
1200             vid = 1;
1201         }
1202         /* compute min output value */
1203         if ((is_last_report || !ost->finished) && ost->st->pts.val != AV_NOPTS_VALUE)
1204             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1205                                           ost->st->time_base, AV_TIME_BASE_Q));
1206     }
1207
1208     secs = pts / AV_TIME_BASE;
1209     us = pts % AV_TIME_BASE;
1210     mins = secs / 60;
1211     secs %= 60;
1212     hours = mins / 60;
1213     mins %= 60;
1214
1215     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1216
1217     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1218                                  "size=N/A time=");
1219     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1220                                  "size=%8.0fkB time=", total_size / 1024.0);
1221     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1222              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1223              (100 * us) / AV_TIME_BASE);
1224     if (bitrate < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1225                               "bitrate=N/A");
1226     else             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1227                               "bitrate=%6.1fkbits/s", bitrate);
1228     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
1229     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1230     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1231     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1232                hours, mins, secs, us);
1233
1234     if (nb_frames_dup || nb_frames_drop)
1235         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1236                 nb_frames_dup, nb_frames_drop);
1237     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1238     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1239
1240     if (print_stats || is_last_report) {
1241         if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
1242             fprintf(stderr, "%s    \r", buf);
1243         } else
1244             av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1245
1246     fflush(stderr);
1247     }
1248
1249     if (progress_avio) {
1250         av_bprintf(&buf_script, "progress=%s\n",
1251                    is_last_report ? "end" : "continue");
1252         avio_write(progress_avio, buf_script.str,
1253                    FFMIN(buf_script.len, buf_script.size - 1));
1254         avio_flush(progress_avio);
1255         av_bprint_finalize(&buf_script, NULL);
1256         if (is_last_report) {
1257             avio_close(progress_avio);
1258             progress_avio = NULL;
1259         }
1260     }
1261
1262     if (is_last_report) {
1263         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1264         av_log(NULL, AV_LOG_INFO, "\n");
1265         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1266                video_size / 1024.0,
1267                audio_size / 1024.0,
1268                subtitle_size / 1024.0,
1269                extra_size / 1024.0,
1270                100.0 * (total_size - raw) / raw
1271         );
1272         if(video_size + audio_size + subtitle_size + extra_size == 0){
1273             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1274         }
1275     }
1276 }
1277
1278 static void flush_encoders(void)
1279 {
1280     int i, ret;
1281
1282     for (i = 0; i < nb_output_streams; i++) {
1283         OutputStream   *ost = output_streams[i];
1284         AVCodecContext *enc = ost->st->codec;
1285         AVFormatContext *os = output_files[ost->file_index]->ctx;
1286         int stop_encoding = 0;
1287
1288         if (!ost->encoding_needed)
1289             continue;
1290
1291         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1292             continue;
1293         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1294             continue;
1295
1296         for (;;) {
1297             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1298             const char *desc;
1299             int64_t *size;
1300
1301             switch (ost->st->codec->codec_type) {
1302             case AVMEDIA_TYPE_AUDIO:
1303                 encode = avcodec_encode_audio2;
1304                 desc   = "Audio";
1305                 size   = &audio_size;
1306                 break;
1307             case AVMEDIA_TYPE_VIDEO:
1308                 encode = avcodec_encode_video2;
1309                 desc   = "Video";
1310                 size   = &video_size;
1311                 break;
1312             default:
1313                 stop_encoding = 1;
1314             }
1315
1316             if (encode) {
1317                 AVPacket pkt;
1318                 int got_packet;
1319                 av_init_packet(&pkt);
1320                 pkt.data = NULL;
1321                 pkt.size = 0;
1322
1323                 update_benchmark(NULL);
1324                 ret = encode(enc, &pkt, NULL, &got_packet);
1325                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1326                 if (ret < 0) {
1327                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1328                     exit(1);
1329                 }
1330                 *size += pkt.size;
1331                 if (ost->logfile && enc->stats_out) {
1332                     fprintf(ost->logfile, "%s", enc->stats_out);
1333                 }
1334                 if (!got_packet) {
1335                     stop_encoding = 1;
1336                     break;
1337                 }
1338                 if (pkt.pts != AV_NOPTS_VALUE)
1339                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1340                 if (pkt.dts != AV_NOPTS_VALUE)
1341                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1342                 if (pkt.duration > 0)
1343                     pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1344                 write_frame(os, &pkt, ost);
1345                 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
1346                     do_video_stats(ost, pkt.size);
1347                 }
1348             }
1349
1350             if (stop_encoding)
1351                 break;
1352         }
1353     }
1354 }
1355
1356 /*
1357  * Check whether a packet from ist should be written into ost at this time
1358  */
1359 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1360 {
1361     OutputFile *of = output_files[ost->file_index];
1362     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1363
1364     if (ost->source_index != ist_index)
1365         return 0;
1366
1367     if (of->start_time && ist->pts < of->start_time)
1368         return 0;
1369
1370     return 1;
1371 }
1372
1373 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1374 {
1375     OutputFile *of = output_files[ost->file_index];
1376     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1377     AVPicture pict;
1378     AVPacket opkt;
1379
1380     av_init_packet(&opkt);
1381
1382     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1383         !ost->copy_initial_nonkeyframes)
1384         return;
1385
1386     if (!ost->frame_number && ist->pts < of->start_time &&
1387         !ost->copy_prior_start)
1388         return;
1389
1390     if (of->recording_time != INT64_MAX &&
1391         ist->pts >= of->recording_time + of->start_time) {
1392         close_output_stream(ost);
1393         return;
1394     }
1395
1396     /* force the input stream PTS */
1397     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1398         audio_size += pkt->size;
1399     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1400         video_size += pkt->size;
1401         ost->sync_opts++;
1402     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1403         subtitle_size += pkt->size;
1404     }
1405
1406     if (pkt->pts != AV_NOPTS_VALUE)
1407         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1408     else
1409         opkt.pts = AV_NOPTS_VALUE;
1410
1411     if (pkt->dts == AV_NOPTS_VALUE)
1412         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1413     else
1414         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1415     opkt.dts -= ost_tb_start_time;
1416
1417     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1418         int duration = av_get_audio_frame_duration(ist->st->codec, pkt->size);
1419         if(!duration)
1420             duration = ist->st->codec->frame_size;
1421         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1422                                                (AVRational){1, ist->st->codec->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
1423                                                ost->st->time_base) - ost_tb_start_time;
1424     }
1425
1426     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1427     opkt.flags    = pkt->flags;
1428
1429     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1430     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1431        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1432        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1433        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1434        ) {
1435         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY)) {
1436             opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1437             if (!opkt.buf)
1438                 exit(1);
1439         }
1440     } else {
1441         opkt.data = pkt->data;
1442         opkt.size = pkt->size;
1443     }
1444
1445     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1446         /* store AVPicture in AVPacket, as expected by the output format */
1447         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1448         opkt.data = (uint8_t *)&pict;
1449         opkt.size = sizeof(AVPicture);
1450         opkt.flags |= AV_PKT_FLAG_KEY;
1451     }
1452
1453     write_frame(of->ctx, &opkt, ost);
1454     ost->st->codec->frame_number++;
1455 }
1456
1457 static void rate_emu_sleep(InputStream *ist)
1458 {
1459     if (input_files[ist->file_index]->rate_emu) {
1460         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
1461         int64_t now = av_gettime() - ist->start;
1462         if (pts > now)
1463             av_usleep(pts - now);
1464     }
1465 }
1466
1467 int guess_input_channel_layout(InputStream *ist)
1468 {
1469     AVCodecContext *dec = ist->st->codec;
1470
1471     if (!dec->channel_layout) {
1472         char layout_name[256];
1473
1474         if (dec->channels > ist->guess_layout_max)
1475             return 0;
1476         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1477         if (!dec->channel_layout)
1478             return 0;
1479         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1480                                      dec->channels, dec->channel_layout);
1481         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1482                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1483     }
1484     return 1;
1485 }
1486
1487 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1488 {
1489     AVFrame *decoded_frame, *f;
1490     AVCodecContext *avctx = ist->st->codec;
1491     int i, ret, err = 0, resample_changed;
1492     AVRational decoded_frame_tb;
1493
1494     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1495         return AVERROR(ENOMEM);
1496     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1497         return AVERROR(ENOMEM);
1498     decoded_frame = ist->decoded_frame;
1499
1500     update_benchmark(NULL);
1501     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1502     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1503
1504     if (ret >= 0 && avctx->sample_rate <= 0) {
1505         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1506         ret = AVERROR_INVALIDDATA;
1507     }
1508
1509     if (!*got_output || ret < 0) {
1510         if (!pkt->size) {
1511             for (i = 0; i < ist->nb_filters; i++)
1512 #if 1
1513                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1514 #else
1515                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1516 #endif
1517         }
1518         return ret;
1519     }
1520
1521 #if 1
1522     /* increment next_dts to use for the case where the input stream does not
1523        have timestamps or there are multiple frames in the packet */
1524     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1525                      avctx->sample_rate;
1526     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1527                      avctx->sample_rate;
1528 #endif
1529
1530     rate_emu_sleep(ist);
1531
1532     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1533                        ist->resample_channels       != avctx->channels               ||
1534                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1535                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1536     if (resample_changed) {
1537         char layout1[64], layout2[64];
1538
1539         if (!guess_input_channel_layout(ist)) {
1540             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1541                    "layout for Input Stream #%d.%d\n", ist->file_index,
1542                    ist->st->index);
1543             exit(1);
1544         }
1545         decoded_frame->channel_layout = avctx->channel_layout;
1546
1547         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1548                                      ist->resample_channel_layout);
1549         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1550                                      decoded_frame->channel_layout);
1551
1552         av_log(NULL, AV_LOG_INFO,
1553                "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",
1554                ist->file_index, ist->st->index,
1555                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1556                ist->resample_channels, layout1,
1557                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1558                avctx->channels, layout2);
1559
1560         ist->resample_sample_fmt     = decoded_frame->format;
1561         ist->resample_sample_rate    = decoded_frame->sample_rate;
1562         ist->resample_channel_layout = decoded_frame->channel_layout;
1563         ist->resample_channels       = avctx->channels;
1564
1565         for (i = 0; i < nb_filtergraphs; i++)
1566             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1567                 FilterGraph *fg = filtergraphs[i];
1568                 int j;
1569                 if (configure_filtergraph(fg) < 0) {
1570                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1571                     exit(1);
1572                 }
1573                 for (j = 0; j < fg->nb_outputs; j++) {
1574                     OutputStream *ost = fg->outputs[j]->ost;
1575                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1576                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1577                         av_buffersink_set_frame_size(ost->filter->filter,
1578                                                      ost->st->codec->frame_size);
1579                 }
1580             }
1581     }
1582
1583     /* if the decoder provides a pts, use it instead of the last packet pts.
1584        the decoder could be delaying output by a packet or more. */
1585     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1586         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1587         decoded_frame_tb   = avctx->time_base;
1588     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1589         decoded_frame->pts = decoded_frame->pkt_pts;
1590         pkt->pts           = AV_NOPTS_VALUE;
1591         decoded_frame_tb   = ist->st->time_base;
1592     } else if (pkt->pts != AV_NOPTS_VALUE) {
1593         decoded_frame->pts = pkt->pts;
1594         pkt->pts           = AV_NOPTS_VALUE;
1595         decoded_frame_tb   = ist->st->time_base;
1596     }else {
1597         decoded_frame->pts = ist->dts;
1598         decoded_frame_tb   = AV_TIME_BASE_Q;
1599     }
1600     if (decoded_frame->pts != AV_NOPTS_VALUE)
1601         decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
1602                                               (AVRational){1, ist->st->codec->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
1603                                               (AVRational){1, ist->st->codec->sample_rate});
1604     for (i = 0; i < ist->nb_filters; i++) {
1605         if (i < ist->nb_filters - 1) {
1606             f = ist->filter_frame;
1607             err = av_frame_ref(f, decoded_frame);
1608             if (err < 0)
1609                 break;
1610         } else
1611             f = decoded_frame;
1612         err = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f,
1613                                      AV_BUFFERSRC_FLAG_PUSH);
1614         if (err < 0)
1615             break;
1616     }
1617     decoded_frame->pts = AV_NOPTS_VALUE;
1618
1619     av_frame_unref(ist->filter_frame);
1620     av_frame_unref(decoded_frame);
1621     return err < 0 ? err : ret;
1622 }
1623
1624 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1625 {
1626     AVFrame *decoded_frame, *f;
1627     void *buffer_to_free = NULL;
1628     int i, ret = 0, err = 0, resample_changed;
1629     int64_t best_effort_timestamp;
1630     AVRational *frame_sample_aspect;
1631
1632     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1633         return AVERROR(ENOMEM);
1634     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1635         return AVERROR(ENOMEM);
1636     decoded_frame = ist->decoded_frame;
1637     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1638
1639     update_benchmark(NULL);
1640     ret = avcodec_decode_video2(ist->st->codec,
1641                                 decoded_frame, got_output, pkt);
1642     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1643     if (!*got_output || ret < 0) {
1644         if (!pkt->size) {
1645             for (i = 0; i < ist->nb_filters; i++)
1646 #if 1
1647                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1648 #else
1649                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1650 #endif
1651         }
1652         return ret;
1653     }
1654
1655     if(ist->top_field_first>=0)
1656         decoded_frame->top_field_first = ist->top_field_first;
1657
1658     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1659     if(best_effort_timestamp != AV_NOPTS_VALUE)
1660         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1661
1662     if (debug_ts) {
1663         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1664                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1665                 ist->st->index, av_ts2str(decoded_frame->pts),
1666                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1667                 best_effort_timestamp,
1668                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1669                 decoded_frame->key_frame, decoded_frame->pict_type);
1670     }
1671
1672     pkt->size = 0;
1673
1674     rate_emu_sleep(ist);
1675
1676     if (ist->st->sample_aspect_ratio.num)
1677         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1678
1679     resample_changed = ist->resample_width   != decoded_frame->width  ||
1680                        ist->resample_height  != decoded_frame->height ||
1681                        ist->resample_pix_fmt != decoded_frame->format;
1682     if (resample_changed) {
1683         av_log(NULL, AV_LOG_INFO,
1684                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1685                ist->file_index, ist->st->index,
1686                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1687                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1688
1689         ist->resample_width   = decoded_frame->width;
1690         ist->resample_height  = decoded_frame->height;
1691         ist->resample_pix_fmt = decoded_frame->format;
1692
1693         for (i = 0; i < nb_filtergraphs; i++) {
1694             if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
1695                 configure_filtergraph(filtergraphs[i]) < 0) {
1696                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1697                 exit(1);
1698             }
1699         }
1700     }
1701
1702     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1703     for (i = 0; i < ist->nb_filters; i++) {
1704         if (!frame_sample_aspect->num)
1705             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1706
1707         if (i < ist->nb_filters - 1) {
1708             f = ist->filter_frame;
1709             err = av_frame_ref(f, decoded_frame);
1710             if (err < 0)
1711                 break;
1712         } else
1713             f = decoded_frame;
1714         if(av_buffersrc_add_frame_flags(ist->filters[i]->filter, f,
1715                                         AV_BUFFERSRC_FLAG_PUSH)<0) {
1716             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
1717             exit(1);
1718         }
1719
1720     }
1721
1722     av_frame_unref(ist->filter_frame);
1723     av_frame_unref(decoded_frame);
1724     av_free(buffer_to_free);
1725     return err < 0 ? err : ret;
1726 }
1727
1728 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1729 {
1730     AVSubtitle subtitle;
1731     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1732                                           &subtitle, got_output, pkt);
1733     if (ret < 0 || !*got_output) {
1734         if (!pkt->size)
1735             sub2video_flush(ist);
1736         return ret;
1737     }
1738
1739     if (ist->fix_sub_duration) {
1740         if (ist->prev_sub.got_output) {
1741             int end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1742                                  1000, AV_TIME_BASE);
1743             if (end < ist->prev_sub.subtitle.end_display_time) {
1744                 av_log(ist->st->codec, AV_LOG_DEBUG,
1745                        "Subtitle duration reduced from %d to %d\n",
1746                        ist->prev_sub.subtitle.end_display_time, end);
1747                 ist->prev_sub.subtitle.end_display_time = end;
1748             }
1749         }
1750         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1751         FFSWAP(int,        ret,         ist->prev_sub.ret);
1752         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1753     }
1754
1755     sub2video_update(ist, &subtitle);
1756
1757     if (!*got_output || !subtitle.num_rects)
1758         return ret;
1759
1760     rate_emu_sleep(ist);
1761
1762     for (i = 0; i < nb_output_streams; i++) {
1763         OutputStream *ost = output_streams[i];
1764
1765         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1766             continue;
1767
1768         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
1769     }
1770
1771     avsubtitle_free(&subtitle);
1772     return ret;
1773 }
1774
1775 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1776 static int output_packet(InputStream *ist, const AVPacket *pkt)
1777 {
1778     int ret = 0, i;
1779     int got_output;
1780
1781     AVPacket avpkt;
1782     if (!ist->saw_first_ts) {
1783         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;
1784         ist->pts = 0;
1785         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1786             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1787             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1788         }
1789         ist->saw_first_ts = 1;
1790     }
1791
1792     if (ist->next_dts == AV_NOPTS_VALUE)
1793         ist->next_dts = ist->dts;
1794     if (ist->next_pts == AV_NOPTS_VALUE)
1795         ist->next_pts = ist->pts;
1796
1797     if (pkt == NULL) {
1798         /* EOF handling */
1799         av_init_packet(&avpkt);
1800         avpkt.data = NULL;
1801         avpkt.size = 0;
1802         goto handle_eof;
1803     } else {
1804         avpkt = *pkt;
1805     }
1806
1807     if (pkt->dts != AV_NOPTS_VALUE) {
1808         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1809         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1810             ist->next_pts = ist->pts = ist->dts;
1811     }
1812
1813     // while we have more to decode or while the decoder did output something on EOF
1814     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1815         int duration;
1816     handle_eof:
1817
1818         ist->pts = ist->next_pts;
1819         ist->dts = ist->next_dts;
1820
1821         if (avpkt.size && avpkt.size != pkt->size) {
1822             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1823                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1824             ist->showed_multi_packet_warning = 1;
1825         }
1826
1827         switch (ist->st->codec->codec_type) {
1828         case AVMEDIA_TYPE_AUDIO:
1829             ret = decode_audio    (ist, &avpkt, &got_output);
1830             break;
1831         case AVMEDIA_TYPE_VIDEO:
1832             ret = decode_video    (ist, &avpkt, &got_output);
1833             if (avpkt.duration) {
1834                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1835             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1836                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1837                 duration = ((int64_t)AV_TIME_BASE *
1838                                 ist->st->codec->time_base.num * ticks) /
1839                                 ist->st->codec->time_base.den;
1840             } else
1841                 duration = 0;
1842
1843             if(ist->dts != AV_NOPTS_VALUE && duration) {
1844                 ist->next_dts += duration;
1845             }else
1846                 ist->next_dts = AV_NOPTS_VALUE;
1847
1848             if (got_output)
1849                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1850             break;
1851         case AVMEDIA_TYPE_SUBTITLE:
1852             ret = transcode_subtitles(ist, &avpkt, &got_output);
1853             break;
1854         default:
1855             return -1;
1856         }
1857
1858         if (ret < 0)
1859             return ret;
1860
1861         avpkt.dts=
1862         avpkt.pts= AV_NOPTS_VALUE;
1863
1864         // touch data and size only if not EOF
1865         if (pkt) {
1866             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1867                 ret = avpkt.size;
1868             avpkt.data += ret;
1869             avpkt.size -= ret;
1870         }
1871         if (!got_output) {
1872             continue;
1873         }
1874     }
1875
1876     /* handle stream copy */
1877     if (!ist->decoding_needed) {
1878         rate_emu_sleep(ist);
1879         ist->dts = ist->next_dts;
1880         switch (ist->st->codec->codec_type) {
1881         case AVMEDIA_TYPE_AUDIO:
1882             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1883                              ist->st->codec->sample_rate;
1884             break;
1885         case AVMEDIA_TYPE_VIDEO:
1886             if (pkt->duration) {
1887                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1888             } else if(ist->st->codec->time_base.num != 0) {
1889                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1890                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1891                                   ist->st->codec->time_base.num * ticks) /
1892                                   ist->st->codec->time_base.den;
1893             }
1894             break;
1895         }
1896         ist->pts = ist->dts;
1897         ist->next_pts = ist->next_dts;
1898     }
1899     for (i = 0; pkt && i < nb_output_streams; i++) {
1900         OutputStream *ost = output_streams[i];
1901
1902         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1903             continue;
1904
1905         do_streamcopy(ist, ost, pkt);
1906     }
1907
1908     return 0;
1909 }
1910
1911 static void print_sdp(void)
1912 {
1913     char sdp[16384];
1914     int i;
1915     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1916
1917     if (!avc)
1918         exit(1);
1919     for (i = 0; i < nb_output_files; i++)
1920         avc[i] = output_files[i]->ctx;
1921
1922     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1923     printf("SDP:\n%s\n", sdp);
1924     fflush(stdout);
1925     av_freep(&avc);
1926 }
1927
1928 static int init_input_stream(int ist_index, char *error, int error_len)
1929 {
1930     int ret;
1931     InputStream *ist = input_streams[ist_index];
1932
1933     if (ist->decoding_needed) {
1934         AVCodec *codec = ist->dec;
1935         if (!codec) {
1936             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1937                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1938             return AVERROR(EINVAL);
1939         }
1940
1941         av_opt_set_int(ist->st->codec, "refcounted_frames", 1, 0);
1942
1943         if (!av_dict_get(ist->opts, "threads", NULL, 0))
1944             av_dict_set(&ist->opts, "threads", "auto", 0);
1945         if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
1946             if (ret == AVERROR_EXPERIMENTAL)
1947                 abort_codec_experimental(codec, 0);
1948             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1949                     ist->file_index, ist->st->index);
1950             return ret;
1951         }
1952         assert_avoptions(ist->opts);
1953     }
1954
1955     ist->next_pts = AV_NOPTS_VALUE;
1956     ist->next_dts = AV_NOPTS_VALUE;
1957     ist->is_start = 1;
1958
1959     return 0;
1960 }
1961
1962 static InputStream *get_input_stream(OutputStream *ost)
1963 {
1964     if (ost->source_index >= 0)
1965         return input_streams[ost->source_index];
1966     return NULL;
1967 }
1968
1969 static int compare_int64(const void *a, const void *b)
1970 {
1971     int64_t va = *(int64_t *)a, vb = *(int64_t *)b;
1972     return va < vb ? -1 : va > vb ? +1 : 0;
1973 }
1974
1975 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1976                                     AVCodecContext *avctx)
1977 {
1978     char *p;
1979     int n = 1, i, size, index = 0;
1980     int64_t t, *pts;
1981
1982     for (p = kf; *p; p++)
1983         if (*p == ',')
1984             n++;
1985     size = n;
1986     pts = av_malloc(sizeof(*pts) * size);
1987     if (!pts) {
1988         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1989         exit(1);
1990     }
1991
1992     p = kf;
1993     for (i = 0; i < n; i++) {
1994         char *next = strchr(p, ',');
1995
1996         if (next)
1997             *next++ = 0;
1998
1999         if (!memcmp(p, "chapters", 8)) {
2000
2001             AVFormatContext *avf = output_files[ost->file_index]->ctx;
2002             int j;
2003
2004             if (avf->nb_chapters > INT_MAX - size ||
2005                 !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
2006                                      sizeof(*pts)))) {
2007                 av_log(NULL, AV_LOG_FATAL,
2008                        "Could not allocate forced key frames array.\n");
2009                 exit(1);
2010             }
2011             t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
2012             t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2013
2014             for (j = 0; j < avf->nb_chapters; j++) {
2015                 AVChapter *c = avf->chapters[j];
2016                 av_assert1(index < size);
2017                 pts[index++] = av_rescale_q(c->start, c->time_base,
2018                                             avctx->time_base) + t;
2019             }
2020
2021         } else {
2022
2023             t = parse_time_or_die("force_key_frames", p, 1);
2024             av_assert1(index < size);
2025             pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2026
2027         }
2028
2029         p = next;
2030     }
2031
2032     av_assert0(index == size);
2033     qsort(pts, size, sizeof(*pts), compare_int64);
2034     ost->forced_kf_count = size;
2035     ost->forced_kf_pts   = pts;
2036 }
2037
2038 static void report_new_stream(int input_index, AVPacket *pkt)
2039 {
2040     InputFile *file = input_files[input_index];
2041     AVStream *st = file->ctx->streams[pkt->stream_index];
2042
2043     if (pkt->stream_index < file->nb_streams_warn)
2044         return;
2045     av_log(file->ctx, AV_LOG_WARNING,
2046            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
2047            av_get_media_type_string(st->codec->codec_type),
2048            input_index, pkt->stream_index,
2049            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
2050     file->nb_streams_warn = pkt->stream_index + 1;
2051 }
2052
2053 static int transcode_init(void)
2054 {
2055     int ret = 0, i, j, k;
2056     AVFormatContext *oc;
2057     AVCodecContext *codec;
2058     OutputStream *ost;
2059     InputStream *ist;
2060     char error[1024];
2061     int want_sdp = 1;
2062
2063     /* init framerate emulation */
2064     for (i = 0; i < nb_input_files; i++) {
2065         InputFile *ifile = input_files[i];
2066         if (ifile->rate_emu)
2067             for (j = 0; j < ifile->nb_streams; j++)
2068                 input_streams[j + ifile->ist_index]->start = av_gettime();
2069     }
2070
2071     /* output stream init */
2072     for (i = 0; i < nb_output_files; i++) {
2073         oc = output_files[i]->ctx;
2074         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2075             av_dump_format(oc, i, oc->filename, 1);
2076             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2077             return AVERROR(EINVAL);
2078         }
2079     }
2080
2081     /* init complex filtergraphs */
2082     for (i = 0; i < nb_filtergraphs; i++)
2083         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2084             return ret;
2085
2086     /* for each output stream, we compute the right encoding parameters */
2087     for (i = 0; i < nb_output_streams; i++) {
2088         AVCodecContext *icodec = NULL;
2089         ost = output_streams[i];
2090         oc  = output_files[ost->file_index]->ctx;
2091         ist = get_input_stream(ost);
2092
2093         if (ost->attachment_filename)
2094             continue;
2095
2096         codec  = ost->st->codec;
2097
2098         if (ist) {
2099             icodec = ist->st->codec;
2100
2101             ost->st->disposition          = ist->st->disposition;
2102             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2103             codec->chroma_sample_location = icodec->chroma_sample_location;
2104         }
2105
2106         if (ost->stream_copy) {
2107             uint64_t extra_size;
2108
2109             av_assert0(ist && !ost->filter);
2110
2111             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2112
2113             if (extra_size > INT_MAX) {
2114                 return AVERROR(EINVAL);
2115             }
2116
2117             /* if stream_copy is selected, no need to decode or encode */
2118             codec->codec_id   = icodec->codec_id;
2119             codec->codec_type = icodec->codec_type;
2120
2121             if (!codec->codec_tag) {
2122                 unsigned int codec_tag;
2123                 if (!oc->oformat->codec_tag ||
2124                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2125                      !av_codec_get_tag2(oc->oformat->codec_tag, icodec->codec_id, &codec_tag))
2126                     codec->codec_tag = icodec->codec_tag;
2127             }
2128
2129             codec->bit_rate       = icodec->bit_rate;
2130             codec->rc_max_rate    = icodec->rc_max_rate;
2131             codec->rc_buffer_size = icodec->rc_buffer_size;
2132             codec->field_order    = icodec->field_order;
2133             codec->extradata      = av_mallocz(extra_size);
2134             if (!codec->extradata) {
2135                 return AVERROR(ENOMEM);
2136             }
2137             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2138             codec->extradata_size= icodec->extradata_size;
2139             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2140
2141             codec->time_base = ist->st->time_base;
2142             /*
2143              * Avi is a special case here because it supports variable fps but
2144              * having the fps and timebase differe significantly adds quite some
2145              * overhead
2146              */
2147             if(!strcmp(oc->oformat->name, "avi")) {
2148                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2149                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2150                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2151                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2152                      || copy_tb==2){
2153                     codec->time_base.num = ist->st->r_frame_rate.den;
2154                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2155                     codec->ticks_per_frame = 2;
2156                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2157                                  && av_q2d(ist->st->time_base) < 1.0/500
2158                     || copy_tb==0){
2159                     codec->time_base = icodec->time_base;
2160                     codec->time_base.num *= icodec->ticks_per_frame;
2161                     codec->time_base.den *= 2;
2162                     codec->ticks_per_frame = 2;
2163                 }
2164             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2165                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2166                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2167                       && strcmp(oc->oformat->name, "f4v")
2168             ) {
2169                 if(   copy_tb<0 && icodec->time_base.den
2170                                 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2171                                 && av_q2d(ist->st->time_base) < 1.0/500
2172                    || copy_tb==0){
2173                     codec->time_base = icodec->time_base;
2174                     codec->time_base.num *= icodec->ticks_per_frame;
2175                 }
2176             }
2177             if (   codec->codec_tag == AV_RL32("tmcd")
2178                 && icodec->time_base.num < icodec->time_base.den
2179                 && icodec->time_base.num > 0
2180                 && 121LL*icodec->time_base.num > icodec->time_base.den) {
2181                 codec->time_base = icodec->time_base;
2182             }
2183
2184             if(ost->frame_rate.num)
2185                 codec->time_base = av_inv_q(ost->frame_rate);
2186
2187             av_reduce(&codec->time_base.num, &codec->time_base.den,
2188                         codec->time_base.num, codec->time_base.den, INT_MAX);
2189
2190             switch (codec->codec_type) {
2191             case AVMEDIA_TYPE_AUDIO:
2192                 if (audio_volume != 256) {
2193                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2194                     exit(1);
2195                 }
2196                 codec->channel_layout     = icodec->channel_layout;
2197                 codec->sample_rate        = icodec->sample_rate;
2198                 codec->channels           = icodec->channels;
2199                 codec->frame_size         = icodec->frame_size;
2200                 codec->audio_service_type = icodec->audio_service_type;
2201                 codec->block_align        = icodec->block_align;
2202                 if((codec->block_align == 1 || codec->block_align == 1152 || codec->block_align == 576) && codec->codec_id == AV_CODEC_ID_MP3)
2203                     codec->block_align= 0;
2204                 if(codec->codec_id == AV_CODEC_ID_AC3)
2205                     codec->block_align= 0;
2206                 break;
2207             case AVMEDIA_TYPE_VIDEO:
2208                 codec->pix_fmt            = icodec->pix_fmt;
2209                 codec->width              = icodec->width;
2210                 codec->height             = icodec->height;
2211                 codec->has_b_frames       = icodec->has_b_frames;
2212                 if (!codec->sample_aspect_ratio.num) {
2213                     codec->sample_aspect_ratio   =
2214                     ost->st->sample_aspect_ratio =
2215                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2216                         ist->st->codec->sample_aspect_ratio.num ?
2217                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2218                 }
2219                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2220                 break;
2221             case AVMEDIA_TYPE_SUBTITLE:
2222                 codec->width  = icodec->width;
2223                 codec->height = icodec->height;
2224                 break;
2225             case AVMEDIA_TYPE_DATA:
2226             case AVMEDIA_TYPE_ATTACHMENT:
2227                 break;
2228             default:
2229                 abort();
2230             }
2231         } else {
2232             if (!ost->enc)
2233                 ost->enc = avcodec_find_encoder(codec->codec_id);
2234             if (!ost->enc) {
2235                 /* should only happen when a default codec is not present. */
2236                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2237                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2238                 ret = AVERROR(EINVAL);
2239                 goto dump_format;
2240             }
2241
2242             if (ist)
2243                 ist->decoding_needed++;
2244             ost->encoding_needed = 1;
2245
2246             if (!ost->filter &&
2247                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2248                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2249                     FilterGraph *fg;
2250                     fg = init_simple_filtergraph(ist, ost);
2251                     if (configure_filtergraph(fg)) {
2252                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2253                         exit(1);
2254                     }
2255             }
2256
2257             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2258                 if (ost->filter && !ost->frame_rate.num)
2259                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2260                 if (ist && !ost->frame_rate.num)
2261                     ost->frame_rate = ist->framerate;
2262                 if (ist && !ost->frame_rate.num)
2263                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2264 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2265                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2266                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2267                     ost->frame_rate = ost->enc->supported_framerates[idx];
2268                 }
2269             }
2270
2271             switch (codec->codec_type) {
2272             case AVMEDIA_TYPE_AUDIO:
2273                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2274                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2275                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2276                 codec->channels       = avfilter_link_get_channels(ost->filter->filter->inputs[0]);
2277                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2278                 break;
2279             case AVMEDIA_TYPE_VIDEO:
2280                 codec->time_base = av_inv_q(ost->frame_rate);
2281                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2282                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2283                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2284                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2285                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2286                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2287                 }
2288                 for (j = 0; j < ost->forced_kf_count; j++)
2289                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2290                                                          AV_TIME_BASE_Q,
2291                                                          codec->time_base);
2292
2293                 codec->width  = ost->filter->filter->inputs[0]->w;
2294                 codec->height = ost->filter->filter->inputs[0]->h;
2295                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2296                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
2297                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
2298                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2299                 if (!strncmp(ost->enc->name, "libx264", 7) &&
2300                     codec->pix_fmt == AV_PIX_FMT_NONE &&
2301                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2302                     av_log(NULL, AV_LOG_INFO,
2303                            "No pixel format specified, %s for H.264 encoding chosen.\n"
2304                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2305                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2306                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2307
2308                 if (!icodec ||
2309                     codec->width   != icodec->width  ||
2310                     codec->height  != icodec->height ||
2311                     codec->pix_fmt != icodec->pix_fmt) {
2312                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2313                 }
2314
2315                 if (ost->forced_keyframes) {
2316                     if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
2317                         ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
2318                                             forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
2319                         if (ret < 0) {
2320                             av_log(NULL, AV_LOG_ERROR,
2321                                    "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
2322                             return ret;
2323                         }
2324                         ost->forced_keyframes_expr_const_values[FKF_N] = 0;
2325                         ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
2326                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
2327                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;
2328                     } else {
2329                         parse_forced_key_frames(ost->forced_keyframes, ost, ost->st->codec);
2330                     }
2331                 }
2332                 break;
2333             case AVMEDIA_TYPE_SUBTITLE:
2334                 codec->time_base = (AVRational){1, 1000};
2335                 if (!codec->width) {
2336                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2337                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2338                 }
2339                 break;
2340             default:
2341                 abort();
2342                 break;
2343             }
2344             /* two pass mode */
2345             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2346                 char logfilename[1024];
2347                 FILE *f;
2348
2349                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2350                          ost->logfile_prefix ? ost->logfile_prefix :
2351                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2352                          i);
2353                 if (!strcmp(ost->enc->name, "libx264")) {
2354                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2355                 } else {
2356                     if (codec->flags & CODEC_FLAG_PASS2) {
2357                         char  *logbuffer;
2358                         size_t logbuffer_size;
2359                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2360                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2361                                    logfilename);
2362                             exit(1);
2363                         }
2364                         codec->stats_in = logbuffer;
2365                     }
2366                     if (codec->flags & CODEC_FLAG_PASS1) {
2367                         f = fopen(logfilename, "wb");
2368                         if (!f) {
2369                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2370                                 logfilename, strerror(errno));
2371                             exit(1);
2372                         }
2373                         ost->logfile = f;
2374                     }
2375                 }
2376             }
2377         }
2378     }
2379
2380     /* open each encoder */
2381     for (i = 0; i < nb_output_streams; i++) {
2382         ost = output_streams[i];
2383         if (ost->encoding_needed) {
2384             AVCodec      *codec = ost->enc;
2385             AVCodecContext *dec = NULL;
2386
2387             if ((ist = get_input_stream(ost)))
2388                 dec = ist->st->codec;
2389             if (dec && dec->subtitle_header) {
2390                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2391                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2392                 if (!ost->st->codec->subtitle_header) {
2393                     ret = AVERROR(ENOMEM);
2394                     goto dump_format;
2395                 }
2396                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2397                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2398             }
2399             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2400                 av_dict_set(&ost->opts, "threads", "auto", 0);
2401             if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
2402                 if (ret == AVERROR_EXPERIMENTAL)
2403                     abort_codec_experimental(codec, 1);
2404                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2405                         ost->file_index, ost->index);
2406                 goto dump_format;
2407             }
2408             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2409                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2410                 av_buffersink_set_frame_size(ost->filter->filter,
2411                                              ost->st->codec->frame_size);
2412             assert_avoptions(ost->opts);
2413             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2414                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2415                                              " It takes bits/s as argument, not kbits/s\n");
2416             extra_size += ost->st->codec->extradata_size;
2417
2418             if (ost->st->codec->me_threshold)
2419                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
2420         } else {
2421             av_opt_set_dict(ost->st->codec, &ost->opts);
2422         }
2423     }
2424
2425     /* init input streams */
2426     for (i = 0; i < nb_input_streams; i++)
2427         if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
2428             for (i = 0; i < nb_output_streams; i++) {
2429                 ost = output_streams[i];
2430                 avcodec_close(ost->st->codec);
2431             }
2432             goto dump_format;
2433         }
2434
2435     /* discard unused programs */
2436     for (i = 0; i < nb_input_files; i++) {
2437         InputFile *ifile = input_files[i];
2438         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2439             AVProgram *p = ifile->ctx->programs[j];
2440             int discard  = AVDISCARD_ALL;
2441
2442             for (k = 0; k < p->nb_stream_indexes; k++)
2443                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2444                     discard = AVDISCARD_DEFAULT;
2445                     break;
2446                 }
2447             p->discard = discard;
2448         }
2449     }
2450
2451     /* open files and write file headers */
2452     for (i = 0; i < nb_output_files; i++) {
2453         oc = output_files[i]->ctx;
2454         oc->interrupt_callback = int_cb;
2455         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2456             char errbuf[128];
2457             const char *errbuf_ptr = errbuf;
2458             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
2459                 errbuf_ptr = strerror(AVUNERROR(ret));
2460             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
2461             ret = AVERROR(EINVAL);
2462             goto dump_format;
2463         }
2464 //         assert_avoptions(output_files[i]->opts);
2465         if (strcmp(oc->oformat->name, "rtp")) {
2466             want_sdp = 0;
2467         }
2468     }
2469
2470  dump_format:
2471     /* dump the file output parameters - cannot be done before in case
2472        of stream copy */
2473     for (i = 0; i < nb_output_files; i++) {
2474         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2475     }
2476
2477     /* dump the stream mapping */
2478     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2479     for (i = 0; i < nb_input_streams; i++) {
2480         ist = input_streams[i];
2481
2482         for (j = 0; j < ist->nb_filters; j++) {
2483             if (ist->filters[j]->graph->graph_desc) {
2484                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2485                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2486                        ist->filters[j]->name);
2487                 if (nb_filtergraphs > 1)
2488                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2489                 av_log(NULL, AV_LOG_INFO, "\n");
2490             }
2491         }
2492     }
2493
2494     for (i = 0; i < nb_output_streams; i++) {
2495         ost = output_streams[i];
2496
2497         if (ost->attachment_filename) {
2498             /* an attached file */
2499             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2500                    ost->attachment_filename, ost->file_index, ost->index);
2501             continue;
2502         }
2503
2504         if (ost->filter && ost->filter->graph->graph_desc) {
2505             /* output from a complex graph */
2506             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2507             if (nb_filtergraphs > 1)
2508                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2509
2510             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2511                    ost->index, ost->enc ? ost->enc->name : "?");
2512             continue;
2513         }
2514
2515         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2516                input_streams[ost->source_index]->file_index,
2517                input_streams[ost->source_index]->st->index,
2518                ost->file_index,
2519                ost->index);
2520         if (ost->sync_ist != input_streams[ost->source_index])
2521             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2522                    ost->sync_ist->file_index,
2523                    ost->sync_ist->st->index);
2524         if (ost->stream_copy)
2525             av_log(NULL, AV_LOG_INFO, " (copy)");
2526         else
2527             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2528                    input_streams[ost->source_index]->dec->name : "?",
2529                    ost->enc ? ost->enc->name : "?");
2530         av_log(NULL, AV_LOG_INFO, "\n");
2531     }
2532
2533     if (ret) {
2534         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2535         return ret;
2536     }
2537
2538     if (want_sdp) {
2539         print_sdp();
2540     }
2541
2542     return 0;
2543 }
2544
2545 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2546 static int need_output(void)
2547 {
2548     int i;
2549
2550     for (i = 0; i < nb_output_streams; i++) {
2551         OutputStream *ost    = output_streams[i];
2552         OutputFile *of       = output_files[ost->file_index];
2553         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2554
2555         if (ost->finished ||
2556             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2557             continue;
2558         if (ost->frame_number >= ost->max_frames) {
2559             int j;
2560             for (j = 0; j < of->ctx->nb_streams; j++)
2561                 close_output_stream(output_streams[of->ost_index + j]);
2562             continue;
2563         }
2564
2565         return 1;
2566     }
2567
2568     return 0;
2569 }
2570
2571 /**
2572  * Select the output stream to process.
2573  *
2574  * @return  selected output stream, or NULL if none available
2575  */
2576 static OutputStream *choose_output(void)
2577 {
2578     int i;
2579     int64_t opts_min = INT64_MAX;
2580     OutputStream *ost_min = NULL;
2581
2582     for (i = 0; i < nb_output_streams; i++) {
2583         OutputStream *ost = output_streams[i];
2584         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2585                                     AV_TIME_BASE_Q);
2586         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2587             opts_min = opts;
2588             ost_min  = ost;
2589         }
2590     }
2591     return ost_min;
2592 }
2593
2594 static int check_keyboard_interaction(int64_t cur_time)
2595 {
2596     int i, ret, key;
2597     static int64_t last_time;
2598     if (received_nb_signals)
2599         return AVERROR_EXIT;
2600     /* read_key() returns 0 on EOF */
2601     if(cur_time - last_time >= 100000 && !run_as_daemon){
2602         key =  read_key();
2603         last_time = cur_time;
2604     }else
2605         key = -1;
2606     if (key == 'q')
2607         return AVERROR_EXIT;
2608     if (key == '+') av_log_set_level(av_log_get_level()+10);
2609     if (key == '-') av_log_set_level(av_log_get_level()-10);
2610     if (key == 's') qp_hist     ^= 1;
2611     if (key == 'h'){
2612         if (do_hex_dump){
2613             do_hex_dump = do_pkt_dump = 0;
2614         } else if(do_pkt_dump){
2615             do_hex_dump = 1;
2616         } else
2617             do_pkt_dump = 1;
2618         av_log_set_level(AV_LOG_DEBUG);
2619     }
2620     if (key == 'c' || key == 'C'){
2621         char buf[4096], target[64], command[256], arg[256] = {0};
2622         double time;
2623         int k, n = 0;
2624         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2625         i = 0;
2626         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2627             if (k > 0)
2628                 buf[i++] = k;
2629         buf[i] = 0;
2630         if (k > 0 &&
2631             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2632             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2633                    target, time, command, arg);
2634             for (i = 0; i < nb_filtergraphs; i++) {
2635                 FilterGraph *fg = filtergraphs[i];
2636                 if (fg->graph) {
2637                     if (time < 0) {
2638                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2639                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2640                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2641                     } else {
2642                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2643                     }
2644                 }
2645             }
2646         } else {
2647             av_log(NULL, AV_LOG_ERROR,
2648                    "Parse error, at least 3 arguments were expected, "
2649                    "only %d given in string '%s'\n", n, buf);
2650         }
2651     }
2652     if (key == 'd' || key == 'D'){
2653         int debug=0;
2654         if(key == 'D') {
2655             debug = input_streams[0]->st->codec->debug<<1;
2656             if(!debug) debug = 1;
2657             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2658                 debug += debug;
2659         }else
2660             if(scanf("%d", &debug)!=1)
2661                 fprintf(stderr,"error parsing debug value\n");
2662         for(i=0;i<nb_input_streams;i++) {
2663             input_streams[i]->st->codec->debug = debug;
2664         }
2665         for(i=0;i<nb_output_streams;i++) {
2666             OutputStream *ost = output_streams[i];
2667             ost->st->codec->debug = debug;
2668         }
2669         if(debug) av_log_set_level(AV_LOG_DEBUG);
2670         fprintf(stderr,"debug=%d\n", debug);
2671     }
2672     if (key == '?'){
2673         fprintf(stderr, "key    function\n"
2674                         "?      show this help\n"
2675                         "+      increase verbosity\n"
2676                         "-      decrease verbosity\n"
2677                         "c      Send command to filtergraph\n"
2678                         "D      cycle through available debug modes\n"
2679                         "h      dump packets/hex press to cycle through the 3 states\n"
2680                         "q      quit\n"
2681                         "s      Show QP histogram\n"
2682         );
2683     }
2684     return 0;
2685 }
2686
2687 #if HAVE_PTHREADS
2688 static void *input_thread(void *arg)
2689 {
2690     InputFile *f = arg;
2691     int ret = 0;
2692
2693     while (!transcoding_finished && ret >= 0) {
2694         AVPacket pkt;
2695         ret = av_read_frame(f->ctx, &pkt);
2696
2697         if (ret == AVERROR(EAGAIN)) {
2698             av_usleep(10000);
2699             ret = 0;
2700             continue;
2701         } else if (ret < 0)
2702             break;
2703
2704         pthread_mutex_lock(&f->fifo_lock);
2705         while (!av_fifo_space(f->fifo))
2706             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2707
2708         av_dup_packet(&pkt);
2709         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2710
2711         pthread_mutex_unlock(&f->fifo_lock);
2712     }
2713
2714     f->finished = 1;
2715     return NULL;
2716 }
2717
2718 static void free_input_threads(void)
2719 {
2720     int i;
2721
2722     if (nb_input_files == 1)
2723         return;
2724
2725     transcoding_finished = 1;
2726
2727     for (i = 0; i < nb_input_files; i++) {
2728         InputFile *f = input_files[i];
2729         AVPacket pkt;
2730
2731         if (!f->fifo || f->joined)
2732             continue;
2733
2734         pthread_mutex_lock(&f->fifo_lock);
2735         while (av_fifo_size(f->fifo)) {
2736             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2737             av_free_packet(&pkt);
2738         }
2739         pthread_cond_signal(&f->fifo_cond);
2740         pthread_mutex_unlock(&f->fifo_lock);
2741
2742         pthread_join(f->thread, NULL);
2743         f->joined = 1;
2744
2745         while (av_fifo_size(f->fifo)) {
2746             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2747             av_free_packet(&pkt);
2748         }
2749         av_fifo_free(f->fifo);
2750     }
2751 }
2752
2753 static int init_input_threads(void)
2754 {
2755     int i, ret;
2756
2757     if (nb_input_files == 1)
2758         return 0;
2759
2760     for (i = 0; i < nb_input_files; i++) {
2761         InputFile *f = input_files[i];
2762
2763         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2764             return AVERROR(ENOMEM);
2765
2766         pthread_mutex_init(&f->fifo_lock, NULL);
2767         pthread_cond_init (&f->fifo_cond, NULL);
2768
2769         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2770             return AVERROR(ret);
2771     }
2772     return 0;
2773 }
2774
2775 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2776 {
2777     int ret = 0;
2778
2779     pthread_mutex_lock(&f->fifo_lock);
2780
2781     if (av_fifo_size(f->fifo)) {
2782         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2783         pthread_cond_signal(&f->fifo_cond);
2784     } else {
2785         if (f->finished)
2786             ret = AVERROR_EOF;
2787         else
2788             ret = AVERROR(EAGAIN);
2789     }
2790
2791     pthread_mutex_unlock(&f->fifo_lock);
2792
2793     return ret;
2794 }
2795 #endif
2796
2797 static int get_input_packet(InputFile *f, AVPacket *pkt)
2798 {
2799 #if HAVE_PTHREADS
2800     if (nb_input_files > 1)
2801         return get_input_packet_mt(f, pkt);
2802 #endif
2803     return av_read_frame(f->ctx, pkt);
2804 }
2805
2806 static int got_eagain(void)
2807 {
2808     int i;
2809     for (i = 0; i < nb_output_streams; i++)
2810         if (output_streams[i]->unavailable)
2811             return 1;
2812     return 0;
2813 }
2814
2815 static void reset_eagain(void)
2816 {
2817     int i;
2818     for (i = 0; i < nb_input_files; i++)
2819         input_files[i]->eagain = 0;
2820     for (i = 0; i < nb_output_streams; i++)
2821         output_streams[i]->unavailable = 0;
2822 }
2823
2824 /*
2825  * Return
2826  * - 0 -- one packet was read and processed
2827  * - AVERROR(EAGAIN) -- no packets were available for selected file,
2828  *   this function should be called again
2829  * - AVERROR_EOF -- this function should not be called again
2830  */
2831 static int process_input(int file_index)
2832 {
2833     InputFile *ifile = input_files[file_index];
2834     AVFormatContext *is;
2835     InputStream *ist;
2836     AVPacket pkt;
2837     int ret, i, j;
2838
2839     is  = ifile->ctx;
2840     ret = get_input_packet(ifile, &pkt);
2841
2842     if (ret == AVERROR(EAGAIN)) {
2843         ifile->eagain = 1;
2844         return ret;
2845     }
2846     if (ret < 0) {
2847         if (ret != AVERROR_EOF) {
2848             print_error(is->filename, ret);
2849             if (exit_on_error)
2850                 exit(1);
2851         }
2852         ifile->eof_reached = 1;
2853
2854         for (i = 0; i < ifile->nb_streams; i++) {
2855             ist = input_streams[ifile->ist_index + i];
2856             if (ist->decoding_needed)
2857                 output_packet(ist, NULL);
2858
2859             /* mark all outputs that don't go through lavfi as finished */
2860             for (j = 0; j < nb_output_streams; j++) {
2861                 OutputStream *ost = output_streams[j];
2862
2863                 if (ost->source_index == ifile->ist_index + i &&
2864                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2865                     close_output_stream(ost);
2866             }
2867         }
2868
2869         return AVERROR(EAGAIN);
2870     }
2871
2872     reset_eagain();
2873
2874     if (do_pkt_dump) {
2875         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2876                          is->streams[pkt.stream_index]);
2877     }
2878     /* the following test is needed in case new streams appear
2879        dynamically in stream : we ignore them */
2880     if (pkt.stream_index >= ifile->nb_streams) {
2881         report_new_stream(file_index, &pkt);
2882         goto discard_packet;
2883     }
2884
2885     ist = input_streams[ifile->ist_index + pkt.stream_index];
2886     if (ist->discard)
2887         goto discard_packet;
2888
2889     if (debug_ts) {
2890         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
2891                "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",
2892                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2893                av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
2894                av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
2895                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2896                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2897                av_ts2str(input_files[ist->file_index]->ts_offset),
2898                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
2899     }
2900
2901     if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
2902         int64_t stime, stime2;
2903         // Correcting starttime based on the enabled streams
2904         // 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.
2905         //       so we instead do it here as part of discontinuity handling
2906         if (   ist->next_dts == AV_NOPTS_VALUE
2907             && ifile->ts_offset == -is->start_time
2908             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2909             int64_t new_start_time = INT64_MAX;
2910             for (i=0; i<is->nb_streams; i++) {
2911                 AVStream *st = is->streams[i];
2912                 if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
2913                     continue;
2914                 new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
2915             }
2916             if (new_start_time > is->start_time) {
2917                 av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
2918                 ifile->ts_offset = -new_start_time;
2919             }
2920         }
2921
2922         stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
2923         stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
2924         ist->wrap_correction_done = 1;
2925
2926         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2927             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
2928             ist->wrap_correction_done = 0;
2929         }
2930         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2931             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
2932             ist->wrap_correction_done = 0;
2933         }
2934     }
2935
2936     if (pkt.dts != AV_NOPTS_VALUE)
2937         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2938     if (pkt.pts != AV_NOPTS_VALUE)
2939         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2940
2941     if (pkt.pts != AV_NOPTS_VALUE)
2942         pkt.pts *= ist->ts_scale;
2943     if (pkt.dts != AV_NOPTS_VALUE)
2944         pkt.dts *= ist->ts_scale;
2945
2946     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts == AV_NOPTS_VALUE && !copy_ts
2947         && (is->iformat->flags & AVFMT_TS_DISCONT) && ifile->last_ts != AV_NOPTS_VALUE) {
2948         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2949         int64_t delta   = pkt_dts - ifile->last_ts;
2950         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2951             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2952                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)){
2953             ifile->ts_offset -= delta;
2954             av_log(NULL, AV_LOG_DEBUG,
2955                    "Inter stream timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2956                    delta, ifile->ts_offset);
2957             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2958             if (pkt.pts != AV_NOPTS_VALUE)
2959                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2960         }
2961     }
2962
2963     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2964         !copy_ts) {
2965         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2966         int64_t delta   = pkt_dts - ist->next_dts;
2967         if (is->iformat->flags & AVFMT_TS_DISCONT) {
2968         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2969             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2970                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2971             pkt_dts+1<ist->pts){
2972             ifile->ts_offset -= delta;
2973             av_log(NULL, AV_LOG_DEBUG,
2974                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2975                    delta, ifile->ts_offset);
2976             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2977             if (pkt.pts != AV_NOPTS_VALUE)
2978                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2979         }
2980         } else {
2981             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2982                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2983                ) {
2984                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
2985                 pkt.dts = AV_NOPTS_VALUE;
2986             }
2987             if (pkt.pts != AV_NOPTS_VALUE){
2988                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
2989                 delta   = pkt_pts - ist->next_dts;
2990                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2991                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2992                    ) {
2993                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
2994                     pkt.pts = AV_NOPTS_VALUE;
2995                 }
2996             }
2997         }
2998     }
2999
3000     if (pkt.dts != AV_NOPTS_VALUE)
3001         ifile->last_ts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3002
3003     if (debug_ts) {
3004         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",
3005                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
3006                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3007                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3008                av_ts2str(input_files[ist->file_index]->ts_offset),
3009                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3010     }
3011
3012     sub2video_heartbeat(ist, pkt.pts);
3013
3014     ret = output_packet(ist, &pkt);
3015     if (ret < 0) {
3016         char buf[128];
3017         av_strerror(ret, buf, sizeof(buf));
3018         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
3019                 ist->file_index, ist->st->index, buf);
3020         if (exit_on_error)
3021             exit(1);
3022     }
3023
3024 discard_packet:
3025     av_free_packet(&pkt);
3026
3027     return 0;
3028 }
3029
3030 /**
3031  * Perform a step of transcoding for the specified filter graph.
3032  *
3033  * @param[in]  graph     filter graph to consider
3034  * @param[out] best_ist  input stream where a frame would allow to continue
3035  * @return  0 for success, <0 for error
3036  */
3037 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
3038 {
3039     int i, ret;
3040     int nb_requests, nb_requests_max = 0;
3041     InputFilter *ifilter;
3042     InputStream *ist;
3043
3044     *best_ist = NULL;
3045     ret = avfilter_graph_request_oldest(graph->graph);
3046     if (ret >= 0)
3047         return reap_filters();
3048
3049     if (ret == AVERROR_EOF) {
3050         ret = reap_filters();
3051         for (i = 0; i < graph->nb_outputs; i++)
3052             close_output_stream(graph->outputs[i]->ost);
3053         return ret;
3054     }
3055     if (ret != AVERROR(EAGAIN))
3056         return ret;
3057
3058     for (i = 0; i < graph->nb_inputs; i++) {
3059         ifilter = graph->inputs[i];
3060         ist = ifilter->ist;
3061         if (input_files[ist->file_index]->eagain ||
3062             input_files[ist->file_index]->eof_reached)
3063             continue;
3064         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
3065         if (nb_requests > nb_requests_max) {
3066             nb_requests_max = nb_requests;
3067             *best_ist = ist;
3068         }
3069     }
3070
3071     if (!*best_ist)
3072         for (i = 0; i < graph->nb_outputs; i++)
3073             graph->outputs[i]->ost->unavailable = 1;
3074
3075     return 0;
3076 }
3077
3078 /**
3079  * Run a single step of transcoding.
3080  *
3081  * @return  0 for success, <0 for error
3082  */
3083 static int transcode_step(void)
3084 {
3085     OutputStream *ost;
3086     InputStream  *ist;
3087     int ret;
3088
3089     ost = choose_output();
3090     if (!ost) {
3091         if (got_eagain()) {
3092             reset_eagain();
3093             av_usleep(10000);
3094             return 0;
3095         }
3096         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
3097         return AVERROR_EOF;
3098     }
3099
3100     if (ost->filter) {
3101         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
3102             return ret;
3103         if (!ist)
3104             return 0;
3105     } else {
3106         av_assert0(ost->source_index >= 0);
3107         ist = input_streams[ost->source_index];
3108     }
3109
3110     ret = process_input(ist->file_index);
3111     if (ret == AVERROR(EAGAIN)) {
3112         if (input_files[ist->file_index]->eagain)
3113             ost->unavailable = 1;
3114         return 0;
3115     }
3116     if (ret < 0)
3117         return ret == AVERROR_EOF ? 0 : ret;
3118
3119     return reap_filters();
3120 }
3121
3122 /*
3123  * The following code is the main loop of the file converter
3124  */
3125 static int transcode(void)
3126 {
3127     int ret, i;
3128     AVFormatContext *os;
3129     OutputStream *ost;
3130     InputStream *ist;
3131     int64_t timer_start;
3132
3133     ret = transcode_init();
3134     if (ret < 0)
3135         goto fail;
3136
3137     if (stdin_interaction) {
3138         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3139     }
3140
3141     timer_start = av_gettime();
3142
3143 #if HAVE_PTHREADS
3144     if ((ret = init_input_threads()) < 0)
3145         goto fail;
3146 #endif
3147
3148     while (!received_sigterm) {
3149         int64_t cur_time= av_gettime();
3150
3151         /* if 'q' pressed, exits */
3152         if (stdin_interaction)
3153             if (check_keyboard_interaction(cur_time) < 0)
3154                 break;
3155
3156         /* check if there's any stream where output is still needed */
3157         if (!need_output()) {
3158             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3159             break;
3160         }
3161
3162         ret = transcode_step();
3163         if (ret < 0) {
3164             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
3165                 continue;
3166
3167             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
3168             break;
3169         }
3170
3171         /* dump report by using the output first video and audio streams */
3172         print_report(0, timer_start, cur_time);
3173     }
3174 #if HAVE_PTHREADS
3175     free_input_threads();
3176 #endif
3177
3178     /* at the end of stream, we must flush the decoder buffers */
3179     for (i = 0; i < nb_input_streams; i++) {
3180         ist = input_streams[i];
3181         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3182             output_packet(ist, NULL);
3183         }
3184     }
3185     flush_encoders();
3186
3187     term_exit();
3188
3189     /* write the trailer if needed and close file */
3190     for (i = 0; i < nb_output_files; i++) {
3191         os = output_files[i]->ctx;
3192         av_write_trailer(os);
3193     }
3194
3195     /* dump report by using the first video and audio streams */
3196     print_report(1, timer_start, av_gettime());
3197
3198     /* close each encoder */
3199     for (i = 0; i < nb_output_streams; i++) {
3200         ost = output_streams[i];
3201         if (ost->encoding_needed) {
3202             av_freep(&ost->st->codec->stats_in);
3203             avcodec_close(ost->st->codec);
3204         }
3205     }
3206
3207     /* close each decoder */
3208     for (i = 0; i < nb_input_streams; i++) {
3209         ist = input_streams[i];
3210         if (ist->decoding_needed) {
3211             avcodec_close(ist->st->codec);
3212         }
3213     }
3214
3215     /* finished ! */
3216     ret = 0;
3217
3218  fail:
3219 #if HAVE_PTHREADS
3220     free_input_threads();
3221 #endif
3222
3223     if (output_streams) {
3224         for (i = 0; i < nb_output_streams; i++) {
3225             ost = output_streams[i];
3226             if (ost) {
3227                 if (ost->stream_copy)
3228                     av_freep(&ost->st->codec->extradata);
3229                 if (ost->logfile) {
3230                     fclose(ost->logfile);
3231                     ost->logfile = NULL;
3232                 }
3233                 av_freep(&ost->st->codec->subtitle_header);
3234                 av_free(ost->forced_kf_pts);
3235                 av_dict_free(&ost->opts);
3236                 av_dict_free(&ost->swr_opts);
3237                 av_dict_free(&ost->resample_opts);
3238             }
3239         }
3240     }
3241     return ret;
3242 }
3243
3244
3245 static int64_t getutime(void)
3246 {
3247 #if HAVE_GETRUSAGE
3248     struct rusage rusage;
3249
3250     getrusage(RUSAGE_SELF, &rusage);
3251     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3252 #elif HAVE_GETPROCESSTIMES
3253     HANDLE proc;
3254     FILETIME c, e, k, u;
3255     proc = GetCurrentProcess();
3256     GetProcessTimes(proc, &c, &e, &k, &u);
3257     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3258 #else
3259     return av_gettime();
3260 #endif
3261 }
3262
3263 static int64_t getmaxrss(void)
3264 {
3265 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3266     struct rusage rusage;
3267     getrusage(RUSAGE_SELF, &rusage);
3268     return (int64_t)rusage.ru_maxrss * 1024;
3269 #elif HAVE_GETPROCESSMEMORYINFO
3270     HANDLE proc;
3271     PROCESS_MEMORY_COUNTERS memcounters;
3272     proc = GetCurrentProcess();
3273     memcounters.cb = sizeof(memcounters);
3274     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3275     return memcounters.PeakPagefileUsage;
3276 #else
3277     return 0;
3278 #endif
3279 }
3280
3281 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3282 {
3283 }
3284
3285 int main(int argc, char **argv)
3286 {
3287     int ret;
3288     int64_t ti;
3289
3290     atexit(exit_program);
3291
3292     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3293
3294     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3295     parse_loglevel(argc, argv, options);
3296
3297     if(argc>1 && !strcmp(argv[1], "-d")){
3298         run_as_daemon=1;
3299         av_log_set_callback(log_callback_null);
3300         argc--;
3301         argv++;
3302     }
3303
3304     avcodec_register_all();
3305 #if CONFIG_AVDEVICE
3306     avdevice_register_all();
3307 #endif
3308     avfilter_register_all();
3309     av_register_all();
3310     avformat_network_init();
3311
3312     show_banner(argc, argv, options);
3313
3314     term_init();
3315
3316     /* parse options and open all input/output files */
3317     ret = ffmpeg_parse_options(argc, argv);
3318     if (ret < 0)
3319         exit(1);
3320
3321     if (nb_output_files <= 0 && nb_input_files == 0) {
3322         show_usage();
3323         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3324         exit(1);
3325     }
3326
3327     /* file converter / grab */
3328     if (nb_output_files <= 0) {
3329         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3330         exit(1);
3331     }
3332
3333 //     if (nb_input_files == 0) {
3334 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3335 //         exit(1);
3336 //     }
3337
3338     current_time = ti = getutime();
3339     if (transcode() < 0)
3340         exit(1);
3341     ti = getutime() - ti;
3342     if (do_benchmark) {
3343         printf("bench: utime=%0.3fs\n", ti / 1000000.0);
3344     }
3345
3346     exit(received_nb_signals ? 255 : 0);
3347     return 0;
3348 }