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