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