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

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