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/fifo.h"
  50 #include "libavutil/intreadwrite.h"
  51 #include "libavutil/dict.h"
  52 #include "libavutil/mathematics.h"
  53 #include "libavutil/pixdesc.h"
  54 #include "libavutil/avstring.h"
  55 #include "libavutil/libm.h"
  56 #include "libavutil/imgutils.h"
  57 #include "libavutil/timestamp.h"
  58 #include "libavutil/bprint.h"
  59 #include "libavutil/time.h"
  60 #include "libavformat/os_support.h"
  61
  62 #include "libavformat/ffm.h" // not public API
  63
  64 # include "libavfilter/avcodec.h"
  65 # include "libavfilter/avfilter.h"
  66 # include "libavfilter/buffersrc.h"
  67 # include "libavfilter/buffersink.h"
  68
  69 #if HAVE_SYS_RESOURCE_H
  70 #include <sys/time.h>
  71 #include <sys/types.h>
  72 #include <sys/resource.h>
  73 #elif HAVE_GETPROCESSTIMES
  74 #include <windows.h>
  75 #endif
  76 #if HAVE_GETPROCESSMEMORYINFO
  77 #include <windows.h>
  78 #include <psapi.h>
  79 #endif
  80
  81 #if HAVE_SYS_SELECT_H
  82 #include <sys/select.h>
  83 #endif
  84
  85 #if HAVE_TERMIOS_H
  86 #include <fcntl.h>
  87 #include <sys/ioctl.h>
  88 #include <sys/time.h>
  89 #include <termios.h>
  90 #elif HAVE_KBHIT
  91 #include <conio.h>
  92 #endif
  93
  94 #if HAVE_PTHREADS
  95 #include <pthread.h>
  96 #endif
  97
  98 #include <time.h>
  99
 100 #include "ffmpeg.h"
 101 #include "cmdutils.h"
 102
 103 #include "libavutil/avassert.h"
 104
 105 const char program_name[] = "ffmpeg";
 106 const int program_birth_year = 2000;
 107
 108 static FILE *vstats_file;
 109
 110 const char *const forced_keyframes_const_names[] = {
 111     "n",
 112     "n_forced",
 113     "prev_forced_n",
 114     "prev_forced_t",
 115     "t",
 116     NULL
 117 };
 118
 119 static void do_video_stats(OutputStream *ost, int frame_size);
 120 static int64_t getutime(void);
 121 static int64_t getmaxrss(void);
 122
 123 static int run_as_daemon  = 0;
 124 static int64_t video_size = 0;
 125 static int64_t audio_size = 0;
 126 static int64_t subtitle_size = 0;
 127 static int64_t extra_size = 0;
 128 static int nb_frames_dup = 0;
 129 static int nb_frames_drop = 0;
 130 static int64_t decode_error_stat[2];
 131
 132 static int current_time;
 133 AVIOContext *progress_avio = NULL;
 134
 135 static uint8_t *subtitle_out;
 136
 137 #if HAVE_PTHREADS
 138 /* signal to input threads that they should exit; set by the main thread */
 139 static int transcoding_finished;
 140 #endif
 141
 142 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
 143
 144 InputStream **input_streams = NULL;
 145 int        nb_input_streams = 0;
 146 InputFile   **input_files   = NULL;
 147 int        nb_input_files   = 0;
 148
 149 OutputStream **output_streams = NULL;
 150 int         nb_output_streams = 0;
 151 OutputFile   **output_files   = NULL;
 152 int         nb_output_files   = 0;
 153
 154 FilterGraph **filtergraphs;
 155 int        nb_filtergraphs;
 156
 157 #if HAVE_TERMIOS_H
 158
 159 /* init terminal so that we can grab keys */
 160 static struct termios oldtty;
 161 static int restore_tty;
 162 #endif
 163
 164 static void free_input_threads(void);
 165
 166
 167 /* sub2video hack:
 168    Convert subtitles to video with alpha to insert them in filter graphs.
 169    This is a temporary solution until libavfilter gets real subtitles support.
 170  */
 171
 172 static int sub2video_get_blank_frame(InputStream *ist)
 173 {
 174     int ret;
 175     AVFrame *frame = ist->sub2video.frame;
 176
 177     av_frame_unref(frame);
 178     ist->sub2video.frame->width  = ist->sub2video.w;
 179     ist->sub2video.frame->height = ist->sub2video.h;
 180     ist->sub2video.frame->format = AV_PIX_FMT_RGB32;
 181     if ((ret = av_frame_get_buffer(frame, 32)) < 0)
 182         return ret;
 183     memset(frame->data[0], 0, frame->height * frame->linesize[0]);
 184     return 0;
 185 }
 186
 187 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
 188                                 AVSubtitleRect *r)
 189 {
 190     uint32_t *pal, *dst2;
 191     uint8_t *src, *src2;
 192     int x, y;
 193
 194     if (r->type != SUBTITLE_BITMAP) {
 195         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
 196         return;
 197     }
 198     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
 199         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
 200         return;
 201     }
 202
 203     dst += r->y * dst_linesize + r->x * 4;
 204     src = r->pict.data[0];
 205     pal = (uint32_t *)r->pict.data[1];
 206     for (y = 0; y < r->h; y++) {
 207         dst2 = (uint32_t *)dst;
 208         src2 = src;
 209         for (x = 0; x < r->w; x++)
 210             *(dst2++) = pal[*(src2++)];
 211         dst += dst_linesize;
 212         src += r->pict.linesize[0];
 213     }
 214 }
 215
 216 static void sub2video_push_ref(InputStream *ist, int64_t pts)
 217 {
 218     AVFrame *frame = ist->sub2video.frame;
 219     int i;
 220
 221     av_assert1(frame->data[0]);
 222     ist->sub2video.last_pts = frame->pts = pts;
 223     for (i = 0; i < ist->nb_filters; i++)
 224         av_buffersrc_add_frame_flags(ist->filters[i]->filter, frame,
 225                                      AV_BUFFERSRC_FLAG_KEEP_REF |
 226                                      AV_BUFFERSRC_FLAG_PUSH);
 227 }
 228
 229 static void sub2video_update(InputStream *ist, AVSubtitle *sub)
 230 {
 231     int w = ist->sub2video.w, h = ist->sub2video.h;
 232     AVFrame *frame = ist->sub2video.frame;
 233     int8_t *dst;
 234     int     dst_linesize;
 235     int num_rects, i;
 236     int64_t pts, end_pts;
 237
 238     if (!frame)
 239         return;
 240     if (sub) {
 241         pts       = av_rescale_q(sub->pts + sub->start_display_time * 1000,
 242                                  AV_TIME_BASE_Q, ist->st->time_base);
 243         end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000,
 244                                  AV_TIME_BASE_Q, ist->st->time_base);
 245         num_rects = sub->num_rects;
 246     } else {
 247         pts       = ist->sub2video.end_pts;
 248         end_pts   = INT64_MAX;
 249         num_rects = 0;
 250     }
 251     if (sub2video_get_blank_frame(ist) < 0) {
 252         av_log(ist->st->codec, AV_LOG_ERROR,
 253                "Impossible to get a blank canvas.\n");
 254         return;
 255     }
 256     dst          = frame->data    [0];
 257     dst_linesize = frame->linesize[0];
 258     for (i = 0; i < num_rects; i++)
 259         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
 260     sub2video_push_ref(ist, pts);
 261     ist->sub2video.end_pts = end_pts;
 262 }
 263
 264 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
 265 {
 266     InputFile *infile = input_files[ist->file_index];
 267     int i, j, nb_reqs;
 268     int64_t pts2;
 269
 270     /* When a frame is read from a file, examine all sub2video streams in
 271        the same file and send the sub2video frame again. Otherwise, decoded
 272        video frames could be accumulating in the filter graph while a filter
 273        (possibly overlay) is desperately waiting for a subtitle frame. */
 274     for (i = 0; i < infile->nb_streams; i++) {
 275         InputStream *ist2 = input_streams[infile->ist_index + i];
 276         if (!ist2->sub2video.frame)
 277             continue;
 278         /* subtitles seem to be usually muxed ahead of other streams;
 279            if not, substracting a larger time here is necessary */
 280         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
 281         /* do not send the heartbeat frame if the subtitle is already ahead */
 282         if (pts2 <= ist2->sub2video.last_pts)
 283             continue;
 284         if (pts2 >= ist2->sub2video.end_pts || !ist2->sub2video.frame->data[0])
 285             sub2video_update(ist2, NULL);
 286         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
 287             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
 288         if (nb_reqs)
 289             sub2video_push_ref(ist2, pts2);
 290     }
 291 }
 292
 293 static void sub2video_flush(InputStream *ist)
 294 {
 295     int i;
 296
 297     for (i = 0; i < ist->nb_filters; i++)
 298         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
 299 }
 300
 301 /* end of sub2video hack */
 302
 303 void term_exit(void)
 304 {
 305     av_log(NULL, AV_LOG_QUIET, "%s", "");
 306 #if HAVE_TERMIOS_H
 307     if(restore_tty)
 308         tcsetattr (0, TCSANOW, &oldtty);
 309 #endif
 310 }
 311
 312 static volatile int received_sigterm = 0;
 313 static volatile int received_nb_signals = 0;
 314
 315 static void
 316 sigterm_handler(int sig)
 317 {
 318     received_sigterm = sig;
 319     received_nb_signals++;
 320     term_exit();
 321     if(received_nb_signals > 3)
 322         exit(123);
 323 }
 324
 325 void term_init(void)
 326 {
 327 #if HAVE_TERMIOS_H
 328     if(!run_as_daemon){
 329         struct termios tty;
 330         int istty = 1;
 331 #if HAVE_ISATTY
 332         istty = isatty(0) && isatty(2);
 333 #endif
 334         if (istty && tcgetattr (0, &tty) == 0) {
 335             oldtty = tty;
 336             restore_tty = 1;
 337             atexit(term_exit);
 338
 339             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
 340                              |INLCR|IGNCR|ICRNL|IXON);
 341             tty.c_oflag |= OPOST;
 342             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
 343             tty.c_cflag &= ~(CSIZE|PARENB);
 344             tty.c_cflag |= CS8;
 345             tty.c_cc[VMIN] = 1;
 346             tty.c_cc[VTIME] = 0;
 347
 348             tcsetattr (0, TCSANOW, &tty);
 349         }
 350         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
 351     }
 352 #endif
 353     avformat_network_deinit();
 354
 355     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
 356     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
 357 #ifdef SIGXCPU
 358     signal(SIGXCPU, sigterm_handler);
 359 #endif
 360 }
 361
 362 /* read a key without blocking */
 363 static int read_key(void)
 364 {
 365     unsigned char ch;
 366 #if HAVE_TERMIOS_H
 367     int n = 1;
 368     struct timeval tv;
 369     fd_set rfds;
 370
 371     FD_ZERO(&rfds);
 372     FD_SET(0, &rfds);
 373     tv.tv_sec = 0;
 374     tv.tv_usec = 0;
 375     n = select(1, &rfds, NULL, NULL, &tv);
 376     if (n > 0) {
 377         n = read(0, &ch, 1);
 378         if (n == 1)
 379             return ch;
 380
 381         return n;
 382     }
 383 #elif HAVE_KBHIT
 384 #    if HAVE_PEEKNAMEDPIPE
 385     static int is_pipe;
 386     static HANDLE input_handle;
 387     DWORD dw, nchars;
 388     if(!input_handle){
 389         input_handle = GetStdHandle(STD_INPUT_HANDLE);
 390         is_pipe = !GetConsoleMode(input_handle, &dw);
 391     }
 392
 393     if (stdin->_cnt > 0) {
 394         read(0, &ch, 1);
 395         return ch;
 396     }
 397     if (is_pipe) {
 398         /* When running under a GUI, you will end here. */
 399         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
 400             // input pipe may have been closed by the program that ran ffmpeg
 401             return -1;
 402         }
 403         //Read it
 404         if(nchars != 0) {
 405             read(0, &ch, 1);
 406             return ch;
 407         }else{
 408             return -1;
 409         }
 410     }
 411 #    endif
 412     if(kbhit())
 413         return(getch());
 414 #endif
 415     return -1;
 416 }
 417
 418 static int decode_interrupt_cb(void *ctx)
 419 {
 420     return received_nb_signals > 1;
 421 }
 422
 423 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
 424
 425 static void exit_program(void)
 426 {
 427     int i, j;
 428
 429     if (do_benchmark) {
 430         int maxrss = getmaxrss() / 1024;
 431         printf("bench: maxrss=%ikB\n", maxrss);
 432     }
 433
 434     for (i = 0; i < nb_filtergraphs; i++) {
 435         avfilter_graph_free(&filtergraphs[i]->graph);
 436         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
 437             av_freep(&filtergraphs[i]->inputs[j]->name);
 438             av_freep(&filtergraphs[i]->inputs[j]);
 439         }
 440         av_freep(&filtergraphs[i]->inputs);
 441         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
 442             av_freep(&filtergraphs[i]->outputs[j]->name);
 443             av_freep(&filtergraphs[i]->outputs[j]);
 444         }
 445         av_freep(&filtergraphs[i]->outputs);
 446         av_freep(&filtergraphs[i]->graph_desc);
 447         av_freep(&filtergraphs[i]);
 448     }
 449     av_freep(&filtergraphs);
 450
 451     av_freep(&subtitle_out);
 452
 453     /* close files */
 454     for (i = 0; i < nb_output_files; i++) {
 455         AVFormatContext *s = output_files[i]->ctx;
 456         if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE) && s->pb)
 457             avio_close(s->pb);
 458         avformat_free_context(s);
 459         av_dict_free(&output_files[i]->opts);
 460         av_freep(&output_files[i]);
 461     }
 462     for (i = 0; i < nb_output_streams; i++) {
 463         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
 464         while (bsfc) {
 465             AVBitStreamFilterContext *next = bsfc->next;
 466             av_bitstream_filter_close(bsfc);
 467             bsfc = next;
 468         }
 469         output_streams[i]->bitstream_filters = NULL;
 470         avcodec_free_frame(&output_streams[i]->filtered_frame);
 471
 472         av_freep(&output_streams[i]->forced_keyframes);
 473         av_expr_free(output_streams[i]->forced_keyframes_pexpr);
 474         av_freep(&output_streams[i]->avfilter);
 475         av_freep(&output_streams[i]->logfile_prefix);
 476         av_freep(&output_streams[i]);
 477     }
 478 #if HAVE_PTHREADS
 479     free_input_threads();
 480 #endif
 481     for (i = 0; i < nb_input_files; i++) {
 482         avformat_close_input(&input_files[i]->ctx);
 483         av_freep(&input_files[i]);
 484     }
 485     for (i = 0; i < nb_input_streams; i++) {
 486         av_frame_free(&input_streams[i]->decoded_frame);
 487         av_frame_free(&input_streams[i]->filter_frame);
 488         av_dict_free(&input_streams[i]->opts);
 489         avsubtitle_free(&input_streams[i]->prev_sub.subtitle);
 490         av_frame_free(&input_streams[i]->sub2video.frame);
 491         av_freep(&input_streams[i]->filters);
 492         av_freep(&input_streams[i]);
 493     }
 494
 495     if (vstats_file)
 496         fclose(vstats_file);
 497     av_free(vstats_filename);
 498
 499     av_freep(&input_streams);
 500     av_freep(&input_files);
 501     av_freep(&output_streams);
 502     av_freep(&output_files);
 503
 504     uninit_opts();
 505
 506     avformat_network_deinit();
 507
 508     if (received_sigterm) {
 509         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
 510                (int) received_sigterm);
 511     }
 512 }
 513
 514 void assert_avoptions(AVDictionary *m)
 515 {
 516     AVDictionaryEntry *t;
 517     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
 518         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
 519         exit(1);
 520     }
 521 }
 522
 523 static void abort_codec_experimental(AVCodec *c, int encoder)
 524 {
 525     exit(1);
 526 }
 527
 528 static void update_benchmark(const char *fmt, ...)
 529 {
 530     if (do_benchmark_all) {
 531         int64_t t = getutime();
 532         va_list va;
 533         char buf[1024];
 534
 535         if (fmt) {
 536             va_start(va, fmt);
 537             vsnprintf(buf, sizeof(buf), fmt, va);
 538             va_end(va);
 539             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
 540         }
 541         current_time = t;
 542     }
 543 }
 544
 545 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
 546 {
 547     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
 548     AVCodecContext          *avctx = ost->st->codec;
 549     int ret;
 550
 551     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
 552         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
 553         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
 554
 555     /*
 556      * Audio encoders may split the packets --  #frames in != #packets out.
 557      * But there is no reordering, so we can limit the number of output packets
 558      * by simply dropping them here.
 559      * Counting encoded video frames needs to be done separately because of
 560      * reordering, see do_video_out()
 561      */
 562     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
 563         if (ost->frame_number >= ost->max_frames) {
 564             av_free_packet(pkt);
 565             return;
 566         }
 567         ost->frame_number++;
 568     }
 569
 570     while (bsfc) {
 571         AVPacket new_pkt = *pkt;
 572         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
 573                                            &new_pkt.data, &new_pkt.size,
 574                                            pkt->data, pkt->size,
 575                                            pkt->flags & AV_PKT_FLAG_KEY);
 576         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
 577             uint8_t *t = av_malloc(new_pkt.size + FF_INPUT_BUFFER_PADDING_SIZE); //the new should be a subset of the old so cannot overflow
 578             if(t) {
 579                 memcpy(t, new_pkt.data, new_pkt.size);
 580                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
 581                 new_pkt.data = t;
 582                 new_pkt.buf = NULL;
 583                 a = 1;
 584             } else
 585                 a = AVERROR(ENOMEM);
 586         }
 587         if (a > 0) {
 588             av_free_packet(pkt);
 589             new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
 590                                            av_buffer_default_free, NULL, 0);
 591             if (!new_pkt.buf)
 592                 exit(1);
 593         } else if (a < 0) {
 594             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
 595                    bsfc->filter->name, pkt->stream_index,
 596                    avctx->codec ? avctx->codec->name : "copy");
 597             print_error("", a);
 598             if (exit_on_error)
 599                 exit(1);
 600         }
 601         *pkt = new_pkt;
 602
 603         bsfc = bsfc->next;
 604     }
 605
 606     if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS) &&
 607         (avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) &&
 608         pkt->dts != AV_NOPTS_VALUE &&
 609         ost->last_mux_dts != AV_NOPTS_VALUE) {
 610       int64_t max = ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
 611       if (pkt->dts < max) {
 612         int loglevel = max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG;
 613         av_log(s, loglevel, "Non-monotonous DTS in output stream "
 614                "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
 615                ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
 616         if (exit_on_error) {
 617             av_log(NULL, AV_LOG_FATAL, "aborting.\n");
 618             exit(1);
 619         }
 620         av_log(s, loglevel, "changing to %"PRId64". This may result "
 621                "in incorrect timestamps in the output file.\n",
 622                max);
 623         if(pkt->pts >= pkt->dts)
 624             pkt->pts = FFMAX(pkt->pts, max);
 625         pkt->dts = max;
 626       }
 627     }
 628     ost->last_mux_dts = pkt->dts;
 629
 630     pkt->stream_index = ost->index;
 631
 632     if (debug_ts) {
 633         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
 634                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
 635                 av_get_media_type_string(ost->st->codec->codec_type),
 636                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
 637                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
 638                 pkt->size
 639               );
 640     }
 641
 642     ret = av_interleaved_write_frame(s, pkt);
 643     if (ret < 0) {
 644         print_error("av_interleaved_write_frame()", ret);
 645         exit(1);
 646     }
 647 }
 648
 649 static void close_output_stream(OutputStream *ost)
 650 {
 651     OutputFile *of = output_files[ost->file_index];
 652
 653     ost->finished = 1;
 654     if (of->shortest) {
 655         int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, AV_TIME_BASE_Q);
 656         of->recording_time = FFMIN(of->recording_time, end);
 657     }
 658 }
 659
 660 static int check_recording_time(OutputStream *ost)
 661 {
 662     OutputFile *of = output_files[ost->file_index];
 663
 664     if (of->recording_time != INT64_MAX &&
 665         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
 666                       AV_TIME_BASE_Q) >= 0) {
 667         close_output_stream(ost);
 668         return 0;
 669     }
 670     return 1;
 671 }
 672
 673 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
 674                          AVFrame *frame)
 675 {
 676     AVCodecContext *enc = ost->st->codec;
 677     AVPacket pkt;
 678     int got_packet = 0;
 679
 680     av_init_packet(&pkt);
 681     pkt.data = NULL;
 682     pkt.size = 0;
 683
 684     if (!check_recording_time(ost))
 685         return;
 686
 687     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
 688         frame->pts = ost->sync_opts;
 689     ost->sync_opts = frame->pts + frame->nb_samples;
 690
 691     av_assert0(pkt.size || !pkt.data);
 692     update_benchmark(NULL);
 693     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
 694         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
 695         exit(1);
 696     }
 697     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
 698
 699     if (got_packet) {
 700         if (pkt.pts != AV_NOPTS_VALUE)
 701             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
 702         if (pkt.dts != AV_NOPTS_VALUE)
 703             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
 704         if (pkt.duration > 0)
 705             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
 706
 707         if (debug_ts) {
 708             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
 709                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
 710                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
 711                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
 712         }
 713
 714         audio_size += pkt.size;
 715         write_frame(s, &pkt, ost);
 716
 717         av_free_packet(&pkt);
 718     }
 719 }
 720
 721 static void do_subtitle_out(AVFormatContext *s,
 722                             OutputStream *ost,
 723                             InputStream *ist,
 724                             AVSubtitle *sub)
 725 {
 726     int subtitle_out_max_size = 1024 * 1024;
 727     int subtitle_out_size, nb, i;
 728     AVCodecContext *enc;
 729     AVPacket pkt;
 730     int64_t pts;
 731
 732     if (sub->pts == AV_NOPTS_VALUE) {
 733         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
 734         if (exit_on_error)
 735             exit(1);
 736         return;
 737     }
 738
 739     enc = ost->st->codec;
 740
 741     if (!subtitle_out) {
 742         subtitle_out = av_malloc(subtitle_out_max_size);
 743     }
 744
 745     /* Note: DVB subtitle need one packet to draw them and one other
 746        packet to clear them */
 747     /* XXX: signal it in the codec context ? */
 748     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
 749         nb = 2;
 750     else
 751         nb = 1;
 752
 753     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
 754     pts = sub->pts - output_files[ost->file_index]->start_time;
 755     for (i = 0; i < nb; i++) {
 756         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
 757         if (!check_recording_time(ost))
 758             return;
 759
 760         sub->pts = pts;
 761         // start_display_time is required to be 0
 762         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
 763         sub->end_display_time  -= sub->start_display_time;
 764         sub->start_display_time = 0;
 765         if (i == 1)
 766             sub->num_rects = 0;
 767         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
 768                                                     subtitle_out_max_size, sub);
 769         if (subtitle_out_size < 0) {
 770             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
 771             exit(1);
 772         }
 773
 774         av_init_packet(&pkt);
 775         pkt.data = subtitle_out;
 776         pkt.size = subtitle_out_size;
 777         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
 778         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
 779         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
 780             /* XXX: the pts correction is handled here. Maybe handling
 781                it in the codec would be better */
 782             if (i == 0)
 783                 pkt.pts += 90 * sub->start_display_time;
 784             else
 785                 pkt.pts += 90 * sub->end_display_time;
 786         }
 787         subtitle_size += pkt.size;
 788         write_frame(s, &pkt, ost);
 789     }
 790 }
 791
 792 static void do_video_out(AVFormatContext *s,
 793                          OutputStream *ost,
 794                          AVFrame *in_picture)
 795 {
 796     int ret, format_video_sync;
 797     AVPacket pkt;
 798     AVCodecContext *enc = ost->st->codec;
 799     int nb_frames, i;
 800     double sync_ipts, delta;
 801     double duration = 0;
 802     int frame_size = 0;
 803     InputStream *ist = NULL;
 804
 805     if (ost->source_index >= 0)
 806         ist = input_streams[ost->source_index];
 807
 808     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
 809         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
 810
 811     sync_ipts = in_picture->pts;
 812     delta = sync_ipts - ost->sync_opts + duration;
 813
 814     /* by default, we output a single frame */
 815     nb_frames = 1;
 816
 817     format_video_sync = video_sync_method;
 818     if (format_video_sync == VSYNC_AUTO)
 819         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
 820
 821     switch (format_video_sync) {
 822     case VSYNC_CFR:
 823         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
 824         if (delta < -1.1)
 825             nb_frames = 0;
 826         else if (delta > 1.1)
 827             nb_frames = lrintf(delta);
 828         break;
 829     case VSYNC_VFR:
 830         if (delta <= -0.6)
 831             nb_frames = 0;
 832         else if (delta > 0.6)
 833             ost->sync_opts = lrint(sync_ipts);
 834         break;
 835     case VSYNC_DROP:
 836     case VSYNC_PASSTHROUGH:
 837         ost->sync_opts = lrint(sync_ipts);
 838         break;
 839     default:
 840         av_assert0(0);
 841     }
 842
 843     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
 844     if (nb_frames == 0) {
 845         nb_frames_drop++;
 846         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
 847         return;
 848     } else if (nb_frames > 1) {
 849         if (nb_frames > dts_error_threshold * 30) {
 850             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
 851             nb_frames_drop++;
 852             return;
 853         }
 854         nb_frames_dup += nb_frames - 1;
 855         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
 856     }
 857
 858   /* duplicates frame if needed */
 859   for (i = 0; i < nb_frames; i++) {
 860     av_init_packet(&pkt);
 861     pkt.data = NULL;
 862     pkt.size = 0;
 863
 864     in_picture->pts = ost->sync_opts;
 865
 866 #if 1
 867     if (!check_recording_time(ost))
 868 #else
 869     if (ost->frame_number >= ost->max_frames)
 870 #endif
 871         return;
 872
 873     if (s->oformat->flags & AVFMT_RAWPICTURE &&
 874         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
 875         /* raw pictures are written as AVPicture structure to
 876            avoid any copies. We support temporarily the older
 877            method. */
 878         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
 879         enc->coded_frame->top_field_first  = in_picture->top_field_first;
 880         if (enc->coded_frame->interlaced_frame)
 881             enc->field_order = enc->coded_frame->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
 882         else
 883             enc->field_order = AV_FIELD_PROGRESSIVE;
 884         pkt.data   = (uint8_t *)in_picture;
 885         pkt.size   =  sizeof(AVPicture);
 886         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
 887         pkt.flags |= AV_PKT_FLAG_KEY;
 888
 889         video_size += pkt.size;
 890         write_frame(s, &pkt, ost);
 891     } else {
 892         int got_packet, forced_keyframe = 0;
 893         double pts_time;
 894
 895         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME) &&
 896             ost->top_field_first >= 0)
 897             in_picture->top_field_first = !!ost->top_field_first;
 898
 899         if (in_picture->interlaced_frame) {
 900             if (enc->codec->id == AV_CODEC_ID_MJPEG)
 901                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
 902             else
 903                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
 904         } else
 905             enc->field_order = AV_FIELD_PROGRESSIVE;
 906
 907         in_picture->quality = ost->st->codec->global_quality;
 908         if (!enc->me_threshold)
 909             in_picture->pict_type = 0;
 910
 911         pts_time = in_picture->pts != AV_NOPTS_VALUE ?
 912             in_picture->pts * av_q2d(enc->time_base) : NAN;
 913         if (ost->forced_kf_index < ost->forced_kf_count &&
 914             in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
 915             ost->forced_kf_index++;
 916             forced_keyframe = 1;
 917         } else if (ost->forced_keyframes_pexpr) {
 918             double res;
 919             ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
 920             res = av_expr_eval(ost->forced_keyframes_pexpr,
 921                                ost->forced_keyframes_expr_const_values, NULL);
 922             av_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
 923                     ost->forced_keyframes_expr_const_values[FKF_N],
 924                     ost->forced_keyframes_expr_const_values[FKF_N_FORCED],
 925                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N],
 926                     ost->forced_keyframes_expr_const_values[FKF_T],
 927                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T],
 928                     res);
 929             if (res) {
 930                 forced_keyframe = 1;
 931                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] =
 932                     ost->forced_keyframes_expr_const_values[FKF_N];
 933                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] =
 934                     ost->forced_keyframes_expr_const_values[FKF_T];
 935                 ost->forced_keyframes_expr_const_values[FKF_N_FORCED] += 1;
 936             }
 937
 938             ost->forced_keyframes_expr_const_values[FKF_N] += 1;
 939         }
 940         if (forced_keyframe) {
 941             in_picture->pict_type = AV_PICTURE_TYPE_I;
 942             av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
 943         }
 944
 945         update_benchmark(NULL);
 946         ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
 947         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
 948         if (ret < 0) {
 949             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
 950             exit(1);
 951         }
 952
 953         if (got_packet) {
 954             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
 955                 pkt.pts = ost->sync_opts;
 956
 957             if (pkt.pts != AV_NOPTS_VALUE)
 958                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
 959             if (pkt.dts != AV_NOPTS_VALUE)
 960                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
 961
 962             if (debug_ts) {
 963                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
 964                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
 965                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
 966                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
 967             }
 968
 969             frame_size = pkt.size;
 970             video_size += pkt.size;
 971             write_frame(s, &pkt, ost);
 972             av_free_packet(&pkt);
 973
 974             /* if two pass, output log */
 975             if (ost->logfile && enc->stats_out) {
 976                 fprintf(ost->logfile, "%s", enc->stats_out);
 977             }
 978         }
 979     }
 980     ost->sync_opts++;
 981     /*
 982      * For video, number of frames in == number of packets out.
 983      * But there may be reordering, so we can't throw away frames on encoder
 984      * flush, we need to limit them here, before they go into encoder.
 985      */
 986     ost->frame_number++;
 987
 988     if (vstats_filename && frame_size)
 989         do_video_stats(ost, frame_size);
 990   }
 991 }
 992
 993 static double psnr(double d)
 994 {
 995     return -10.0 * log(d) / log(10.0);
 996 }
 997
 998 static void do_video_stats(OutputStream *ost, int frame_size)
 999 {
1000     AVCodecContext *enc;
1001     int frame_number;
1002     double ti1, bitrate, avg_bitrate;
1003
1004     /* this is executed just the first time do_video_stats is called */
1005     if (!vstats_file) {
1006         vstats_file = fopen(vstats_filename, "w");
1007         if (!vstats_file) {
1008             perror("fopen");
1009             exit(1);
1010         }
1011     }
1012
1013     enc = ost->st->codec;
1014     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1015         frame_number = ost->st->nb_frames;
1016         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1017         if (enc->flags&CODEC_FLAG_PSNR)
1018             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1019
1020         fprintf(vstats_file,"f_size= %6d ", frame_size);
1021         /* compute pts value */
1022         ti1 = ost->st->pts.val * av_q2d(enc->time_base);
1023         if (ti1 < 0.01)
1024             ti1 = 0.01;
1025
1026         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1027         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
1028         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1029                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
1030         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1031     }
1032 }
1033
1034 /**
1035  * Get and encode new output from any of the filtergraphs, without causing
1036  * activity.
1037  *
1038  * @return  0 for success, <0 for severe errors
1039  */
1040 static int reap_filters(void)
1041 {
1042     AVFrame *filtered_frame = NULL;
1043     int i;
1044     int64_t frame_pts;
1045
1046     /* Reap all buffers present in the buffer sinks */
1047     for (i = 0; i < nb_output_streams; i++) {
1048         OutputStream *ost = output_streams[i];
1049         OutputFile    *of = output_files[ost->file_index];
1050         int ret = 0;
1051
1052         if (!ost->filter)
1053             continue;
1054
1055         if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1056             return AVERROR(ENOMEM);
1057         } else
1058             avcodec_get_frame_defaults(ost->filtered_frame);
1059         filtered_frame = ost->filtered_frame;
1060
1061         while (1) {
1062             ret = av_buffersink_get_frame_flags(ost->filter->filter, filtered_frame,
1063                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1064             if (ret < 0) {
1065                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1066                     av_log(NULL, AV_LOG_WARNING,
1067                            "Error in av_buffersink_get_frame_flags(): %s\n", av_err2str(ret));
1068                 }
1069                 break;
1070             }
1071             frame_pts = AV_NOPTS_VALUE;
1072             if (filtered_frame->pts != AV_NOPTS_VALUE) {
1073                 filtered_frame->pts = frame_pts = av_rescale_q(filtered_frame->pts,
1074                                                 ost->filter->filter->inputs[0]->time_base,
1075                                                 ost->st->codec->time_base) -
1076                                     av_rescale_q(of->start_time,
1077                                                 AV_TIME_BASE_Q,
1078                                                 ost->st->codec->time_base);
1079             }
1080             //if (ost->source_index >= 0)
1081             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1082
1083
1084             switch (ost->filter->filter->inputs[0]->type) {
1085             case AVMEDIA_TYPE_VIDEO:
1086                 filtered_frame->pts = frame_pts;
1087                 if (!ost->frame_aspect_ratio.num)
1088                     ost->st->codec->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
1089
1090                 do_video_out(of->ctx, ost, filtered_frame);
1091                 break;
1092             case AVMEDIA_TYPE_AUDIO:
1093                 filtered_frame->pts = frame_pts;
1094                 if (!(ost->st->codec->codec->capabilities & CODEC_CAP_PARAM_CHANGE) &&
1095                     ost->st->codec->channels != av_frame_get_channels(filtered_frame)) {
1096                     av_log(NULL, AV_LOG_ERROR,
1097                            "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
1098                     break;
1099                 }
1100                 do_audio_out(of->ctx, ost, filtered_frame);
1101                 break;
1102             default:
1103                 // TODO support subtitle filters
1104                 av_assert0(0);
1105             }
1106
1107             av_frame_unref(filtered_frame);
1108         }
1109     }
1110
1111     return 0;
1112 }
1113
1114 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1115 {
1116     char buf[1024];
1117     AVBPrint buf_script;
1118     OutputStream *ost;
1119     AVFormatContext *oc;
1120     int64_t total_size;
1121     AVCodecContext *enc;
1122     int frame_number, vid, i;
1123     double bitrate;
1124     int64_t pts = INT64_MIN;
1125     static int64_t last_time = -1;
1126     static int qp_histogram[52];
1127     int hours, mins, secs, us;
1128
1129     if (!print_stats && !is_last_report && !progress_avio)
1130         return;
1131
1132     if (!is_last_report) {
1133         if (last_time == -1) {
1134             last_time = cur_time;
1135             return;
1136         }
1137         if ((cur_time - last_time) < 500000)
1138             return;
1139         last_time = cur_time;
1140     }
1141
1142
1143     oc = output_files[0]->ctx;
1144
1145     total_size = avio_size(oc->pb);
1146     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1147         total_size = avio_tell(oc->pb);
1148
1149     buf[0] = '\0';
1150     vid = 0;
1151     av_bprint_init(&buf_script, 0, 1);
1152     for (i = 0; i < nb_output_streams; i++) {
1153         float q = -1;
1154         ost = output_streams[i];
1155         enc = ost->st->codec;
1156         if (!ost->stream_copy && enc->coded_frame)
1157             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1158         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1159             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1160             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1161                        ost->file_index, ost->index, q);
1162         }
1163         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1164             float fps, t = (cur_time-timer_start) / 1000000.0;
1165
1166             frame_number = ost->frame_number;
1167             fps = t > 1 ? frame_number / t : 0;
1168             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1169                      frame_number, fps < 9.95, fps, q);
1170             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1171             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1172             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1173                        ost->file_index, ost->index, q);
1174             if (is_last_report)
1175                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1176             if (qp_hist) {
1177                 int j;
1178                 int qp = lrintf(q);
1179                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1180                     qp_histogram[qp]++;
1181                 for (j = 0; j < 32; j++)
1182                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1183             }
1184             if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1185                 int j;
1186                 double error, error_sum = 0;
1187                 double scale, scale_sum = 0;
1188                 double p;
1189                 char type[3] = { 'Y','U','V' };
1190                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1191                 for (j = 0; j < 3; j++) {
1192                     if (is_last_report) {
1193                         error = enc->error[j];
1194                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1195                     } else {
1196                         error = enc->coded_frame->error[j];
1197                         scale = enc->width * enc->height * 255.0 * 255.0;
1198                     }
1199                     if (j)
1200                         scale /= 4;
1201                     error_sum += error;
1202                     scale_sum += scale;
1203                     p = psnr(error / scale);
1204                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1205                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1206                                ost->file_index, ost->index, type[j] | 32, p);
1207                 }
1208                 p = psnr(error_sum / scale_sum);
1209                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1210                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1211                            ost->file_index, ost->index, p);
1212             }
1213             vid = 1;
1214         }
1215         /* compute min output value */
1216         if ((is_last_report || !ost->finished) && ost->st->pts.val != AV_NOPTS_VALUE)
1217             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1218                                           ost->st->time_base, AV_TIME_BASE_Q));
1219     }
1220
1221     secs = pts / AV_TIME_BASE;
1222     us = pts % AV_TIME_BASE;
1223     mins = secs / 60;
1224     secs %= 60;
1225     hours = mins / 60;
1226     mins %= 60;
1227
1228     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1229
1230     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1231                                  "size=N/A time=");
1232     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1233                                  "size=%8.0fkB time=", total_size / 1024.0);
1234     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1235              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1236              (100 * us) / AV_TIME_BASE);
1237     if (bitrate < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1238                               "bitrate=N/A");
1239     else             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1240                               "bitrate=%6.1fkbits/s", bitrate);
1241     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
1242     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1243     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1244     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1245                hours, mins, secs, us);
1246
1247     if (nb_frames_dup || nb_frames_drop)
1248         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1249                 nb_frames_dup, nb_frames_drop);
1250     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1251     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1252
1253     if (print_stats || is_last_report) {
1254         if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
1255             fprintf(stderr, "%s    \r", buf);
1256         } else
1257             av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1258
1259     fflush(stderr);
1260     }
1261
1262     if (progress_avio) {
1263         av_bprintf(&buf_script, "progress=%s\n",
1264                    is_last_report ? "end" : "continue");
1265         avio_write(progress_avio, buf_script.str,
1266                    FFMIN(buf_script.len, buf_script.size - 1));
1267         avio_flush(progress_avio);
1268         av_bprint_finalize(&buf_script, NULL);
1269         if (is_last_report) {
1270             avio_close(progress_avio);
1271             progress_avio = NULL;
1272         }
1273     }
1274
1275     if (is_last_report) {
1276         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1277         av_log(NULL, AV_LOG_INFO, "\n");
1278         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1279                video_size / 1024.0,
1280                audio_size / 1024.0,
1281                subtitle_size / 1024.0,
1282                extra_size / 1024.0,
1283                100.0 * (total_size - raw) / raw
1284         );
1285         if(video_size + audio_size + subtitle_size + extra_size == 0){
1286             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1287         }
1288     }
1289 }
1290
1291 static void flush_encoders(void)
1292 {
1293     int i, ret;
1294
1295     for (i = 0; i < nb_output_streams; i++) {
1296         OutputStream   *ost = output_streams[i];
1297         AVCodecContext *enc = ost->st->codec;
1298         AVFormatContext *os = output_files[ost->file_index]->ctx;
1299         int stop_encoding = 0;
1300
1301         if (!ost->encoding_needed)
1302             continue;
1303
1304         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1305             continue;
1306         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1307             continue;
1308
1309         for (;;) {
1310             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1311             const char *desc;
1312             int64_t *size;
1313
1314             switch (ost->st->codec->codec_type) {
1315             case AVMEDIA_TYPE_AUDIO:
1316                 encode = avcodec_encode_audio2;
1317                 desc   = "Audio";
1318                 size   = &audio_size;
1319                 break;
1320             case AVMEDIA_TYPE_VIDEO:
1321                 encode = avcodec_encode_video2;
1322                 desc   = "Video";
1323                 size   = &video_size;
1324                 break;
1325             default:
1326                 stop_encoding = 1;
1327             }
1328
1329             if (encode) {
1330                 AVPacket pkt;
1331                 int got_packet;
1332                 av_init_packet(&pkt);
1333                 pkt.data = NULL;
1334                 pkt.size = 0;
1335
1336                 update_benchmark(NULL);
1337                 ret = encode(enc, &pkt, NULL, &got_packet);
1338                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1339                 if (ret < 0) {
1340                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1341                     exit(1);
1342                 }
1343                 *size += pkt.size;
1344                 if (ost->logfile && enc->stats_out) {
1345                     fprintf(ost->logfile, "%s", enc->stats_out);
1346                 }
1347                 if (!got_packet) {
1348                     stop_encoding = 1;
1349                     break;
1350                 }
1351                 if (pkt.pts != AV_NOPTS_VALUE)
1352                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1353                 if (pkt.dts != AV_NOPTS_VALUE)
1354                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1355                 if (pkt.duration > 0)
1356                     pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1357                 write_frame(os, &pkt, ost);
1358                 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
1359                     do_video_stats(ost, pkt.size);
1360                 }
1361             }
1362
1363             if (stop_encoding)
1364                 break;
1365         }
1366     }
1367 }
1368
1369 /*
1370  * Check whether a packet from ist should be written into ost at this time
1371  */
1372 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1373 {
1374     OutputFile *of = output_files[ost->file_index];
1375     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1376
1377     if (ost->source_index != ist_index)
1378         return 0;
1379
1380     if (of->start_time && ist->pts < of->start_time)
1381         return 0;
1382
1383     return 1;
1384 }
1385
1386 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1387 {
1388     OutputFile *of = output_files[ost->file_index];
1389     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1390     int64_t ist_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ist->st->time_base);
1391     AVPicture pict;
1392     AVPacket opkt;
1393
1394     av_init_packet(&opkt);
1395
1396     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1397         !ost->copy_initial_nonkeyframes)
1398         return;
1399
1400     if (pkt->pts == AV_NOPTS_VALUE) {
1401         if (!ost->frame_number && ist->pts < of->start_time &&
1402             !ost->copy_prior_start)
1403             return;
1404     } else {
1405         if (!ost->frame_number && pkt->pts < ist_tb_start_time &&
1406             !ost->copy_prior_start)
1407             return;
1408     }
1409
1410     if (of->recording_time != INT64_MAX &&
1411         ist->pts >= of->recording_time + of->start_time) {
1412         close_output_stream(ost);
1413         return;
1414     }
1415
1416     /* force the input stream PTS */
1417     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1418         audio_size += pkt->size;
1419     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1420         video_size += pkt->size;
1421         ost->sync_opts++;
1422     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1423         subtitle_size += pkt->size;
1424     }
1425
1426     if (pkt->pts != AV_NOPTS_VALUE)
1427         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1428     else
1429         opkt.pts = AV_NOPTS_VALUE;
1430
1431     if (pkt->dts == AV_NOPTS_VALUE)
1432         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1433     else
1434         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1435     opkt.dts -= ost_tb_start_time;
1436
1437     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1438         int duration = av_get_audio_frame_duration(ist->st->codec, pkt->size);
1439         if(!duration)
1440             duration = ist->st->codec->frame_size;
1441         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1442                                                (AVRational){1, ist->st->codec->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
1443                                                ost->st->time_base) - ost_tb_start_time;
1444     }
1445
1446     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1447     opkt.flags    = pkt->flags;
1448
1449     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1450     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1451        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1452        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1453        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1454        ) {
1455         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY)) {
1456             opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1457             if (!opkt.buf)
1458                 exit(1);
1459         }
1460     } else {
1461         opkt.data = pkt->data;
1462         opkt.size = pkt->size;
1463     }
1464
1465     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1466         /* store AVPicture in AVPacket, as expected by the output format */
1467         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1468         opkt.data = (uint8_t *)&pict;
1469         opkt.size = sizeof(AVPicture);
1470         opkt.flags |= AV_PKT_FLAG_KEY;
1471     }
1472
1473     write_frame(of->ctx, &opkt, ost);
1474     ost->st->codec->frame_number++;
1475 }
1476
1477 int guess_input_channel_layout(InputStream *ist)
1478 {
1479     AVCodecContext *dec = ist->st->codec;
1480
1481     if (!dec->channel_layout) {
1482         char layout_name[256];
1483
1484         if (dec->channels > ist->guess_layout_max)
1485             return 0;
1486         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1487         if (!dec->channel_layout)
1488             return 0;
1489         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1490                                      dec->channels, dec->channel_layout);
1491         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1492                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1493     }
1494     return 1;
1495 }
1496
1497 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1498 {
1499     AVFrame *decoded_frame, *f;
1500     AVCodecContext *avctx = ist->st->codec;
1501     int i, ret, err = 0, resample_changed;
1502     AVRational decoded_frame_tb;
1503
1504     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1505         return AVERROR(ENOMEM);
1506     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1507         return AVERROR(ENOMEM);
1508     decoded_frame = ist->decoded_frame;
1509
1510     update_benchmark(NULL);
1511     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1512     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1513
1514     if (ret >= 0 && avctx->sample_rate <= 0) {
1515         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1516         ret = AVERROR_INVALIDDATA;
1517     }
1518
1519     if (*got_output || ret<0 || pkt->size)
1520         decode_error_stat[ret<0] ++;
1521
1522     if (!*got_output || ret < 0) {
1523         if (!pkt->size) {
1524             for (i = 0; i < ist->nb_filters; i++)
1525 #if 1
1526                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1527 #else
1528                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1529 #endif
1530         }
1531         return ret;
1532     }
1533
1534 #if 1
1535     /* increment next_dts to use for the case where the input stream does not
1536        have timestamps or there are multiple frames in the packet */
1537     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1538                      avctx->sample_rate;
1539     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1540                      avctx->sample_rate;
1541 #endif
1542
1543     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1544                        ist->resample_channels       != avctx->channels               ||
1545                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1546                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1547     if (resample_changed) {
1548         char layout1[64], layout2[64];
1549
1550         if (!guess_input_channel_layout(ist)) {
1551             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1552                    "layout for Input Stream #%d.%d\n", ist->file_index,
1553                    ist->st->index);
1554             exit(1);
1555         }
1556         decoded_frame->channel_layout = avctx->channel_layout;
1557
1558         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1559                                      ist->resample_channel_layout);
1560         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1561                                      decoded_frame->channel_layout);
1562
1563         av_log(NULL, AV_LOG_INFO,
1564                "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",
1565                ist->file_index, ist->st->index,
1566                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1567                ist->resample_channels, layout1,
1568                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1569                avctx->channels, layout2);
1570
1571         ist->resample_sample_fmt     = decoded_frame->format;
1572         ist->resample_sample_rate    = decoded_frame->sample_rate;
1573         ist->resample_channel_layout = decoded_frame->channel_layout;
1574         ist->resample_channels       = avctx->channels;
1575
1576         for (i = 0; i < nb_filtergraphs; i++)
1577             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1578                 FilterGraph *fg = filtergraphs[i];
1579                 int j;
1580                 if (configure_filtergraph(fg) < 0) {
1581                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1582                     exit(1);
1583                 }
1584                 for (j = 0; j < fg->nb_outputs; j++) {
1585                     OutputStream *ost = fg->outputs[j]->ost;
1586                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1587                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1588                         av_buffersink_set_frame_size(ost->filter->filter,
1589                                                      ost->st->codec->frame_size);
1590                 }
1591             }
1592     }
1593
1594     /* if the decoder provides a pts, use it instead of the last packet pts.
1595        the decoder could be delaying output by a packet or more. */
1596     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1597         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1598         decoded_frame_tb   = avctx->time_base;
1599     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1600         decoded_frame->pts = decoded_frame->pkt_pts;
1601         pkt->pts           = AV_NOPTS_VALUE;
1602         decoded_frame_tb   = ist->st->time_base;
1603     } else if (pkt->pts != AV_NOPTS_VALUE) {
1604         decoded_frame->pts = pkt->pts;
1605         pkt->pts           = AV_NOPTS_VALUE;
1606         decoded_frame_tb   = ist->st->time_base;
1607     }else {
1608         decoded_frame->pts = ist->dts;
1609         decoded_frame_tb   = AV_TIME_BASE_Q;
1610     }
1611     if (decoded_frame->pts != AV_NOPTS_VALUE)
1612         decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
1613                                               (AVRational){1, ist->st->codec->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
1614                                               (AVRational){1, ist->st->codec->sample_rate});
1615     for (i = 0; i < ist->nb_filters; i++) {
1616         if (i < ist->nb_filters - 1) {
1617             f = ist->filter_frame;
1618             err = av_frame_ref(f, decoded_frame);
1619             if (err < 0)
1620                 break;
1621         } else
1622             f = decoded_frame;
1623         err = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f,
1624                                      AV_BUFFERSRC_FLAG_PUSH);
1625         if (err == AVERROR_EOF)
1626             err = 0; /* ignore */
1627         if (err < 0)
1628             break;
1629     }
1630     decoded_frame->pts = AV_NOPTS_VALUE;
1631
1632     av_frame_unref(ist->filter_frame);
1633     av_frame_unref(decoded_frame);
1634     return err < 0 ? err : ret;
1635 }
1636
1637 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1638 {
1639     AVFrame *decoded_frame, *f;
1640     void *buffer_to_free = NULL;
1641     int i, ret = 0, err = 0, resample_changed;
1642     int64_t best_effort_timestamp;
1643     AVRational *frame_sample_aspect;
1644
1645     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1646         return AVERROR(ENOMEM);
1647     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1648         return AVERROR(ENOMEM);
1649     decoded_frame = ist->decoded_frame;
1650     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1651
1652     update_benchmark(NULL);
1653     ret = avcodec_decode_video2(ist->st->codec,
1654                                 decoded_frame, got_output, pkt);
1655     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1656
1657     if (*got_output || ret<0 || pkt->size)
1658         decode_error_stat[ret<0] ++;
1659
1660     if (!*got_output || ret < 0) {
1661         if (!pkt->size) {
1662             for (i = 0; i < ist->nb_filters; i++)
1663 #if 1
1664                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1665 #else
1666                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1667 #endif
1668         }
1669         return ret;
1670     }
1671
1672     if(ist->top_field_first>=0)
1673         decoded_frame->top_field_first = ist->top_field_first;
1674
1675     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1676     if(best_effort_timestamp != AV_NOPTS_VALUE)
1677         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1678
1679     if (debug_ts) {
1680         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1681                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1682                 ist->st->index, av_ts2str(decoded_frame->pts),
1683                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1684                 best_effort_timestamp,
1685                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1686                 decoded_frame->key_frame, decoded_frame->pict_type);
1687     }
1688
1689     pkt->size = 0;
1690
1691     if (ist->st->sample_aspect_ratio.num)
1692         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1693
1694     resample_changed = ist->resample_width   != decoded_frame->width  ||
1695                        ist->resample_height  != decoded_frame->height ||
1696                        ist->resample_pix_fmt != decoded_frame->format;
1697     if (resample_changed) {
1698         av_log(NULL, AV_LOG_INFO,
1699                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1700                ist->file_index, ist->st->index,
1701                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1702                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1703
1704         ist->resample_width   = decoded_frame->width;
1705         ist->resample_height  = decoded_frame->height;
1706         ist->resample_pix_fmt = decoded_frame->format;
1707
1708         for (i = 0; i < nb_filtergraphs; i++) {
1709             if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
1710                 configure_filtergraph(filtergraphs[i]) < 0) {
1711                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1712                 exit(1);
1713             }
1714         }
1715     }
1716
1717     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1718     for (i = 0; i < ist->nb_filters; i++) {
1719         if (!frame_sample_aspect->num)
1720             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1721
1722         if (i < ist->nb_filters - 1) {
1723             f = ist->filter_frame;
1724             err = av_frame_ref(f, decoded_frame);
1725             if (err < 0)
1726                 break;
1727         } else
1728             f = decoded_frame;
1729         ret = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f, AV_BUFFERSRC_FLAG_PUSH);
1730         if (ret == AVERROR_EOF) {
1731             ret = 0; /* ignore */
1732         } else if (ret < 0) {
1733             av_log(NULL, AV_LOG_FATAL,
1734                    "Failed to inject frame into filter network: %s\n", av_err2str(ret));
1735             exit(1);
1736         }
1737     }
1738
1739     av_frame_unref(ist->filter_frame);
1740     av_frame_unref(decoded_frame);
1741     av_free(buffer_to_free);
1742     return err < 0 ? err : ret;
1743 }
1744
1745 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1746 {
1747     AVSubtitle subtitle;
1748     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1749                                           &subtitle, got_output, pkt);
1750
1751     if (*got_output || ret<0 || pkt->size)
1752         decode_error_stat[ret<0] ++;
1753
1754     if (ret < 0 || !*got_output) {
1755         if (!pkt->size)
1756             sub2video_flush(ist);
1757         return ret;
1758     }
1759
1760     if (ist->fix_sub_duration) {
1761         if (ist->prev_sub.got_output) {
1762             int end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1763                                  1000, AV_TIME_BASE);
1764             if (end < ist->prev_sub.subtitle.end_display_time) {
1765                 av_log(ist->st->codec, AV_LOG_DEBUG,
1766                        "Subtitle duration reduced from %d to %d\n",
1767                        ist->prev_sub.subtitle.end_display_time, end);
1768                 ist->prev_sub.subtitle.end_display_time = end;
1769             }
1770         }
1771         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1772         FFSWAP(int,        ret,         ist->prev_sub.ret);
1773         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1774     }
1775
1776     sub2video_update(ist, &subtitle);
1777
1778     if (!*got_output || !subtitle.num_rects)
1779         return ret;
1780
1781     for (i = 0; i < nb_output_streams; i++) {
1782         OutputStream *ost = output_streams[i];
1783
1784         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1785             continue;
1786
1787         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
1788     }
1789
1790     avsubtitle_free(&subtitle);
1791     return ret;
1792 }
1793
1794 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1795 static int output_packet(InputStream *ist, const AVPacket *pkt)
1796 {
1797     int ret = 0, i;
1798     int got_output = 0;
1799
1800     AVPacket avpkt;
1801     if (!ist->saw_first_ts) {
1802         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;
1803         ist->pts = 0;
1804         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1805             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1806             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1807         }
1808         ist->saw_first_ts = 1;
1809     }
1810
1811     if (ist->next_dts == AV_NOPTS_VALUE)
1812         ist->next_dts = ist->dts;
1813     if (ist->next_pts == AV_NOPTS_VALUE)
1814         ist->next_pts = ist->pts;
1815
1816     if (pkt == NULL) {
1817         /* EOF handling */
1818         av_init_packet(&avpkt);
1819         avpkt.data = NULL;
1820         avpkt.size = 0;
1821         goto handle_eof;
1822     } else {
1823         avpkt = *pkt;
1824     }
1825
1826     if (pkt->dts != AV_NOPTS_VALUE) {
1827         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1828         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1829             ist->next_pts = ist->pts = ist->dts;
1830     }
1831
1832     // while we have more to decode or while the decoder did output something on EOF
1833     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1834         int duration;
1835     handle_eof:
1836
1837         ist->pts = ist->next_pts;
1838         ist->dts = ist->next_dts;
1839
1840         if (avpkt.size && avpkt.size != pkt->size) {
1841             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1842                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1843             ist->showed_multi_packet_warning = 1;
1844         }
1845
1846         switch (ist->st->codec->codec_type) {
1847         case AVMEDIA_TYPE_AUDIO:
1848             ret = decode_audio    (ist, &avpkt, &got_output);
1849             break;
1850         case AVMEDIA_TYPE_VIDEO:
1851             ret = decode_video    (ist, &avpkt, &got_output);
1852             if (avpkt.duration) {
1853                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1854             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1855                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1856                 duration = ((int64_t)AV_TIME_BASE *
1857                                 ist->st->codec->time_base.num * ticks) /
1858                                 ist->st->codec->time_base.den;
1859             } else
1860                 duration = 0;
1861
1862             if(ist->dts != AV_NOPTS_VALUE && duration) {
1863                 ist->next_dts += duration;
1864             }else
1865                 ist->next_dts = AV_NOPTS_VALUE;
1866
1867             if (got_output)
1868                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1869             break;
1870         case AVMEDIA_TYPE_SUBTITLE:
1871             ret = transcode_subtitles(ist, &avpkt, &got_output);
1872             break;
1873         default:
1874             return -1;
1875         }
1876
1877         if (ret < 0)
1878             return ret;
1879
1880         avpkt.dts=
1881         avpkt.pts= AV_NOPTS_VALUE;
1882
1883         // touch data and size only if not EOF
1884         if (pkt) {
1885             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1886                 ret = avpkt.size;
1887             avpkt.data += ret;
1888             avpkt.size -= ret;
1889         }
1890         if (!got_output) {
1891             continue;
1892         }
1893     }
1894
1895     /* handle stream copy */
1896     if (!ist->decoding_needed) {
1897         ist->dts = ist->next_dts;
1898         switch (ist->st->codec->codec_type) {
1899         case AVMEDIA_TYPE_AUDIO:
1900             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1901                              ist->st->codec->sample_rate;
1902             break;
1903         case AVMEDIA_TYPE_VIDEO:
1904             if (ist->framerate.num) {
1905                 // TODO: Remove work-around for c99-to-c89 issue 7
1906                 AVRational time_base_q = AV_TIME_BASE_Q;
1907                 int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate));
1908                 ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q);
1909             } else if (pkt->duration) {
1910                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1911             } else if(ist->st->codec->time_base.num != 0) {
1912                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1913                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1914                                   ist->st->codec->time_base.num * ticks) /
1915                                   ist->st->codec->time_base.den;
1916             }
1917             break;
1918         }
1919         ist->pts = ist->dts;
1920         ist->next_pts = ist->next_dts;
1921     }
1922     for (i = 0; pkt && i < nb_output_streams; i++) {
1923         OutputStream *ost = output_streams[i];
1924
1925         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1926             continue;
1927
1928         do_streamcopy(ist, ost, pkt);
1929     }
1930
1931     return 0;
1932 }
1933
1934 static void print_sdp(void)
1935 {
1936     char sdp[16384];
1937     int i;
1938     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1939
1940     if (!avc)
1941         exit(1);
1942     for (i = 0; i < nb_output_files; i++)
1943         avc[i] = output_files[i]->ctx;
1944
1945     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1946     printf("SDP:\n%s\n", sdp);
1947     fflush(stdout);
1948     av_freep(&avc);
1949 }
1950
1951 static int init_input_stream(int ist_index, char *error, int error_len)
1952 {
1953     int ret;
1954     InputStream *ist = input_streams[ist_index];
1955
1956     if (ist->decoding_needed) {
1957         AVCodec *codec = ist->dec;
1958         if (!codec) {
1959             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1960                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1961             return AVERROR(EINVAL);
1962         }
1963
1964         av_opt_set_int(ist->st->codec, "refcounted_frames", 1, 0);
1965
1966         if (!av_dict_get(ist->opts, "threads", NULL, 0))
1967             av_dict_set(&ist->opts, "threads", "auto", 0);
1968         if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
1969             char errbuf[128];
1970             if (ret == AVERROR_EXPERIMENTAL)
1971                 abort_codec_experimental(codec, 0);
1972
1973             av_strerror(ret, errbuf, sizeof(errbuf));
1974
1975             snprintf(error, error_len,
1976                      "Error while opening decoder for input stream "
1977                      "#%d:%d : %s",
1978                      ist->file_index, ist->st->index, errbuf);
1979             return ret;
1980         }
1981         assert_avoptions(ist->opts);
1982     }
1983
1984     ist->next_pts = AV_NOPTS_VALUE;
1985     ist->next_dts = AV_NOPTS_VALUE;
1986     ist->is_start = 1;
1987
1988     return 0;
1989 }
1990
1991 static InputStream *get_input_stream(OutputStream *ost)
1992 {
1993     if (ost->source_index >= 0)
1994         return input_streams[ost->source_index];
1995     return NULL;
1996 }
1997
1998 static int compare_int64(const void *a, const void *b)
1999 {
2000     int64_t va = *(int64_t *)a, vb = *(int64_t *)b;
2001     return va < vb ? -1 : va > vb ? +1 : 0;
2002 }
2003
2004 static void parse_forced_key_frames(char *kf, OutputStream *ost,
2005                                     AVCodecContext *avctx)
2006 {
2007     char *p;
2008     int n = 1, i, size, index = 0;
2009     int64_t t, *pts;
2010
2011     for (p = kf; *p; p++)
2012         if (*p == ',')
2013             n++;
2014     size = n;
2015     pts = av_malloc(sizeof(*pts) * size);
2016     if (!pts) {
2017         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
2018         exit(1);
2019     }
2020
2021     p = kf;
2022     for (i = 0; i < n; i++) {
2023         char *next = strchr(p, ',');
2024
2025         if (next)
2026             *next++ = 0;
2027
2028         if (!memcmp(p, "chapters", 8)) {
2029
2030             AVFormatContext *avf = output_files[ost->file_index]->ctx;
2031             int j;
2032
2033             if (avf->nb_chapters > INT_MAX - size ||
2034                 !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
2035                                      sizeof(*pts)))) {
2036                 av_log(NULL, AV_LOG_FATAL,
2037                        "Could not allocate forced key frames array.\n");
2038                 exit(1);
2039             }
2040             t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
2041             t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2042
2043             for (j = 0; j < avf->nb_chapters; j++) {
2044                 AVChapter *c = avf->chapters[j];
2045                 av_assert1(index < size);
2046                 pts[index++] = av_rescale_q(c->start, c->time_base,
2047                                             avctx->time_base) + t;
2048             }
2049
2050         } else {
2051
2052             t = parse_time_or_die("force_key_frames", p, 1);
2053             av_assert1(index < size);
2054             pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2055
2056         }
2057
2058         p = next;
2059     }
2060
2061     av_assert0(index == size);
2062     qsort(pts, size, sizeof(*pts), compare_int64);
2063     ost->forced_kf_count = size;
2064     ost->forced_kf_pts   = pts;
2065 }
2066
2067 static void report_new_stream(int input_index, AVPacket *pkt)
2068 {
2069     InputFile *file = input_files[input_index];
2070     AVStream *st = file->ctx->streams[pkt->stream_index];
2071
2072     if (pkt->stream_index < file->nb_streams_warn)
2073         return;
2074     av_log(file->ctx, AV_LOG_WARNING,
2075            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
2076            av_get_media_type_string(st->codec->codec_type),
2077            input_index, pkt->stream_index,
2078            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
2079     file->nb_streams_warn = pkt->stream_index + 1;
2080 }
2081
2082 static int transcode_init(void)
2083 {
2084     int ret = 0, i, j, k;
2085     AVFormatContext *oc;
2086     AVCodecContext *codec;
2087     OutputStream *ost;
2088     InputStream *ist;
2089     char error[1024];
2090     int want_sdp = 1;
2091
2092     /* init framerate emulation */
2093     for (i = 0; i < nb_input_files; i++) {
2094         InputFile *ifile = input_files[i];
2095         if (ifile->rate_emu)
2096             for (j = 0; j < ifile->nb_streams; j++)
2097                 input_streams[j + ifile->ist_index]->start = av_gettime();
2098     }
2099
2100     /* output stream init */
2101     for (i = 0; i < nb_output_files; i++) {
2102         oc = output_files[i]->ctx;
2103         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2104             av_dump_format(oc, i, oc->filename, 1);
2105             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2106             return AVERROR(EINVAL);
2107         }
2108     }
2109
2110     /* init complex filtergraphs */
2111     for (i = 0; i < nb_filtergraphs; i++)
2112         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2113             return ret;
2114
2115     /* for each output stream, we compute the right encoding parameters */
2116     for (i = 0; i < nb_output_streams; i++) {
2117         AVCodecContext *icodec = NULL;
2118         ost = output_streams[i];
2119         oc  = output_files[ost->file_index]->ctx;
2120         ist = get_input_stream(ost);
2121
2122         if (ost->attachment_filename)
2123             continue;
2124
2125         codec  = ost->st->codec;
2126
2127         if (ist) {
2128             icodec = ist->st->codec;
2129
2130             ost->st->disposition          = ist->st->disposition;
2131             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2132             codec->chroma_sample_location = icodec->chroma_sample_location;
2133         }
2134
2135         if (ost->stream_copy) {
2136             AVRational sar;
2137             uint64_t extra_size;
2138
2139             av_assert0(ist && !ost->filter);
2140
2141             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2142
2143             if (extra_size > INT_MAX) {
2144                 return AVERROR(EINVAL);
2145             }
2146
2147             /* if stream_copy is selected, no need to decode or encode */
2148             codec->codec_id   = icodec->codec_id;
2149             codec->codec_type = icodec->codec_type;
2150
2151             if (!codec->codec_tag) {
2152                 unsigned int codec_tag;
2153                 if (!oc->oformat->codec_tag ||
2154                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2155                      !av_codec_get_tag2(oc->oformat->codec_tag, icodec->codec_id, &codec_tag))
2156                     codec->codec_tag = icodec->codec_tag;
2157             }
2158
2159             codec->bit_rate       = icodec->bit_rate;
2160             codec->rc_max_rate    = icodec->rc_max_rate;
2161             codec->rc_buffer_size = icodec->rc_buffer_size;
2162             codec->field_order    = icodec->field_order;
2163             codec->extradata      = av_mallocz(extra_size);
2164             if (!codec->extradata) {
2165                 return AVERROR(ENOMEM);
2166             }
2167             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2168             codec->extradata_size= icodec->extradata_size;
2169             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2170
2171             codec->time_base = ist->st->time_base;
2172             /*
2173              * Avi is a special case here because it supports variable fps but
2174              * having the fps and timebase differe significantly adds quite some
2175              * overhead
2176              */
2177             if(!strcmp(oc->oformat->name, "avi")) {
2178                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2179                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2180                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2181                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2182                      || copy_tb==2){
2183                     codec->time_base.num = ist->st->r_frame_rate.den;
2184                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2185                     codec->ticks_per_frame = 2;
2186                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2187                                  && av_q2d(ist->st->time_base) < 1.0/500
2188                     || copy_tb==0){
2189                     codec->time_base = icodec->time_base;
2190                     codec->time_base.num *= icodec->ticks_per_frame;
2191                     codec->time_base.den *= 2;
2192                     codec->ticks_per_frame = 2;
2193                 }
2194             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2195                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2196                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2197                       && strcmp(oc->oformat->name, "f4v")
2198             ) {
2199                 if(   copy_tb<0 && icodec->time_base.den
2200                                 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2201                                 && av_q2d(ist->st->time_base) < 1.0/500
2202                    || copy_tb==0){
2203                     codec->time_base = icodec->time_base;
2204                     codec->time_base.num *= icodec->ticks_per_frame;
2205                 }
2206             }
2207             if (   codec->codec_tag == AV_RL32("tmcd")
2208                 && icodec->time_base.num < icodec->time_base.den
2209                 && icodec->time_base.num > 0
2210                 && 121LL*icodec->time_base.num > icodec->time_base.den) {
2211                 codec->time_base = icodec->time_base;
2212             }
2213
2214             if (ist && !ost->frame_rate.num)
2215                 ost->frame_rate = ist->framerate;
2216             if(ost->frame_rate.num)
2217                 codec->time_base = av_inv_q(ost->frame_rate);
2218
2219             av_reduce(&codec->time_base.num, &codec->time_base.den,
2220                         codec->time_base.num, codec->time_base.den, INT_MAX);
2221
2222             switch (codec->codec_type) {
2223             case AVMEDIA_TYPE_AUDIO:
2224                 if (audio_volume != 256) {
2225                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2226                     exit(1);
2227                 }
2228                 codec->channel_layout     = icodec->channel_layout;
2229                 codec->sample_rate        = icodec->sample_rate;
2230                 codec->channels           = icodec->channels;
2231                 codec->frame_size         = icodec->frame_size;
2232                 codec->audio_service_type = icodec->audio_service_type;
2233                 codec->block_align        = icodec->block_align;
2234                 if((codec->block_align == 1 || codec->block_align == 1152 || codec->block_align == 576) && codec->codec_id == AV_CODEC_ID_MP3)
2235                     codec->block_align= 0;
2236                 if(codec->codec_id == AV_CODEC_ID_AC3)
2237                     codec->block_align= 0;
2238                 break;
2239             case AVMEDIA_TYPE_VIDEO:
2240                 codec->pix_fmt            = icodec->pix_fmt;
2241                 codec->width              = icodec->width;
2242                 codec->height             = icodec->height;
2243                 codec->has_b_frames       = icodec->has_b_frames;
2244                 if (ost->frame_aspect_ratio.num) { // overridden by the -aspect cli option
2245                     sar =
2246                         av_mul_q(ost->frame_aspect_ratio,
2247                                  (AVRational){ codec->height, codec->width });
2248                     av_log(NULL, AV_LOG_WARNING, "Overriding aspect ratio "
2249                            "with stream copy may produce invalid files\n");
2250                 }
2251                 else if (ist->st->sample_aspect_ratio.num)
2252                     sar = ist->st->sample_aspect_ratio;
2253                 else
2254                     sar = icodec->sample_aspect_ratio;
2255                 ost->st->sample_aspect_ratio = codec->sample_aspect_ratio = sar;
2256                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2257                 break;
2258             case AVMEDIA_TYPE_SUBTITLE:
2259                 codec->width  = icodec->width;
2260                 codec->height = icodec->height;
2261                 break;
2262             case AVMEDIA_TYPE_DATA:
2263             case AVMEDIA_TYPE_ATTACHMENT:
2264                 break;
2265             default:
2266                 abort();
2267             }
2268         } else {
2269             if (!ost->enc)
2270                 ost->enc = avcodec_find_encoder(codec->codec_id);
2271             if (!ost->enc) {
2272                 /* should only happen when a default codec is not present. */
2273                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2274                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2275                 ret = AVERROR(EINVAL);
2276                 goto dump_format;
2277             }
2278
2279             if (ist)
2280                 ist->decoding_needed++;
2281             ost->encoding_needed = 1;
2282
2283             if (!ost->filter &&
2284                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2285                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2286                     FilterGraph *fg;
2287                     fg = init_simple_filtergraph(ist, ost);
2288                     if (configure_filtergraph(fg)) {
2289                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2290                         exit(1);
2291                     }
2292             }
2293
2294             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2295                 if (ost->filter && !ost->frame_rate.num)
2296                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2297                 if (ist && !ost->frame_rate.num)
2298                     ost->frame_rate = ist->framerate;
2299                 if (ist && !ost->frame_rate.num)
2300                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2301 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2302                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2303                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2304                     ost->frame_rate = ost->enc->supported_framerates[idx];
2305                 }
2306             }
2307
2308             switch (codec->codec_type) {
2309             case AVMEDIA_TYPE_AUDIO:
2310                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2311                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2312                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2313                 codec->channels       = avfilter_link_get_channels(ost->filter->filter->inputs[0]);
2314                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2315                 break;
2316             case AVMEDIA_TYPE_VIDEO:
2317                 codec->time_base = av_inv_q(ost->frame_rate);
2318                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2319                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2320                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2321                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2322                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2323                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2324                 }
2325                 for (j = 0; j < ost->forced_kf_count; j++)
2326                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2327                                                          AV_TIME_BASE_Q,
2328                                                          codec->time_base);
2329
2330                 codec->width  = ost->filter->filter->inputs[0]->w;
2331                 codec->height = ost->filter->filter->inputs[0]->h;
2332                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2333                     ost->frame_aspect_ratio.num ? // overridden by the -aspect cli option
2334                     av_mul_q(ost->frame_aspect_ratio, (AVRational){ codec->height, codec->width }) :
2335                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2336                 if (!strncmp(ost->enc->name, "libx264", 7) &&
2337                     codec->pix_fmt == AV_PIX_FMT_NONE &&
2338                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2339                     av_log(NULL, AV_LOG_INFO,
2340                            "No pixel format specified, %s for H.264 encoding chosen.\n"
2341                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2342                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2343                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2344
2345                 if (!icodec ||
2346                     codec->width   != icodec->width  ||
2347                     codec->height  != icodec->height ||
2348                     codec->pix_fmt != icodec->pix_fmt) {
2349                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2350                 }
2351
2352                 if (ost->forced_keyframes) {
2353                     if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
2354                         ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
2355                                             forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
2356                         if (ret < 0) {
2357                             av_log(NULL, AV_LOG_ERROR,
2358                                    "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
2359                             return ret;
2360                         }
2361                         ost->forced_keyframes_expr_const_values[FKF_N] = 0;
2362                         ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
2363                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
2364                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;
2365                     } else {
2366                         parse_forced_key_frames(ost->forced_keyframes, ost, ost->st->codec);
2367                     }
2368                 }
2369                 break;
2370             case AVMEDIA_TYPE_SUBTITLE:
2371                 codec->time_base = (AVRational){1, 1000};
2372                 if (!codec->width) {
2373                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2374                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2375                 }
2376                 break;
2377             default:
2378                 abort();
2379                 break;
2380             }
2381             /* two pass mode */
2382             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2383                 char logfilename[1024];
2384                 FILE *f;
2385
2386                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2387                          ost->logfile_prefix ? ost->logfile_prefix :
2388                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2389                          i);
2390                 if (!strcmp(ost->enc->name, "libx264")) {
2391                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2392                 } else {
2393                     if (codec->flags & CODEC_FLAG_PASS2) {
2394                         char  *logbuffer;
2395                         size_t logbuffer_size;
2396                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2397                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2398                                    logfilename);
2399                             exit(1);
2400                         }
2401                         codec->stats_in = logbuffer;
2402                     }
2403                     if (codec->flags & CODEC_FLAG_PASS1) {
2404                         f = fopen(logfilename, "wb");
2405                         if (!f) {
2406                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2407                                 logfilename, strerror(errno));
2408                             exit(1);
2409                         }
2410                         ost->logfile = f;
2411                     }
2412                 }
2413             }
2414         }
2415     }
2416
2417     /* open each encoder */
2418     for (i = 0; i < nb_output_streams; i++) {
2419         ost = output_streams[i];
2420         if (ost->encoding_needed) {
2421             AVCodec      *codec = ost->enc;
2422             AVCodecContext *dec = NULL;
2423
2424             if ((ist = get_input_stream(ost)))
2425                 dec = ist->st->codec;
2426             if (dec && dec->subtitle_header) {
2427                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2428                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2429                 if (!ost->st->codec->subtitle_header) {
2430                     ret = AVERROR(ENOMEM);
2431                     goto dump_format;
2432                 }
2433                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2434                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2435             }
2436             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2437                 av_dict_set(&ost->opts, "threads", "auto", 0);
2438             if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
2439                 if (ret == AVERROR_EXPERIMENTAL)
2440                     abort_codec_experimental(codec, 1);
2441                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2442                         ost->file_index, ost->index);
2443                 goto dump_format;
2444             }
2445             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2446                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2447                 av_buffersink_set_frame_size(ost->filter->filter,
2448                                              ost->st->codec->frame_size);
2449             assert_avoptions(ost->opts);
2450             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2451                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2452                                              " It takes bits/s as argument, not kbits/s\n");
2453             extra_size += ost->st->codec->extradata_size;
2454
2455             if (ost->st->codec->me_threshold)
2456                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
2457         } else {
2458             av_opt_set_dict(ost->st->codec, &ost->opts);
2459         }
2460     }
2461
2462     /* init input streams */
2463     for (i = 0; i < nb_input_streams; i++)
2464         if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
2465             for (i = 0; i < nb_output_streams; i++) {
2466                 ost = output_streams[i];
2467                 avcodec_close(ost->st->codec);
2468             }
2469             goto dump_format;
2470         }
2471
2472     /* discard unused programs */
2473     for (i = 0; i < nb_input_files; i++) {
2474         InputFile *ifile = input_files[i];
2475         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2476             AVProgram *p = ifile->ctx->programs[j];
2477             int discard  = AVDISCARD_ALL;
2478
2479             for (k = 0; k < p->nb_stream_indexes; k++)
2480                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2481                     discard = AVDISCARD_DEFAULT;
2482                     break;
2483                 }
2484             p->discard = discard;
2485         }
2486     }
2487
2488     /* open files and write file headers */
2489     for (i = 0; i < nb_output_files; i++) {
2490         oc = output_files[i]->ctx;
2491         oc->interrupt_callback = int_cb;
2492         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2493             char errbuf[128];
2494             av_strerror(ret, errbuf, sizeof(errbuf));
2495             snprintf(error, sizeof(error),
2496                      "Could not write header for output file #%d "
2497                      "(incorrect codec parameters ?): %s",
2498                      i, errbuf);
2499             ret = AVERROR(EINVAL);
2500             goto dump_format;
2501         }
2502 //         assert_avoptions(output_files[i]->opts);
2503         if (strcmp(oc->oformat->name, "rtp")) {
2504             want_sdp = 0;
2505         }
2506     }
2507
2508  dump_format:
2509     /* dump the file output parameters - cannot be done before in case
2510        of stream copy */
2511     for (i = 0; i < nb_output_files; i++) {
2512         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2513     }
2514
2515     /* dump the stream mapping */
2516     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2517     for (i = 0; i < nb_input_streams; i++) {
2518         ist = input_streams[i];
2519
2520         for (j = 0; j < ist->nb_filters; j++) {
2521             if (ist->filters[j]->graph->graph_desc) {
2522                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2523                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2524                        ist->filters[j]->name);
2525                 if (nb_filtergraphs > 1)
2526                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2527                 av_log(NULL, AV_LOG_INFO, "\n");
2528             }
2529         }
2530     }
2531
2532     for (i = 0; i < nb_output_streams; i++) {
2533         ost = output_streams[i];
2534
2535         if (ost->attachment_filename) {
2536             /* an attached file */
2537             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2538                    ost->attachment_filename, ost->file_index, ost->index);
2539             continue;
2540         }
2541
2542         if (ost->filter && ost->filter->graph->graph_desc) {
2543             /* output from a complex graph */
2544             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2545             if (nb_filtergraphs > 1)
2546                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2547
2548             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2549                    ost->index, ost->enc ? ost->enc->name : "?");
2550             continue;
2551         }
2552
2553         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2554                input_streams[ost->source_index]->file_index,
2555                input_streams[ost->source_index]->st->index,
2556                ost->file_index,
2557                ost->index);
2558         if (ost->sync_ist != input_streams[ost->source_index])
2559             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2560                    ost->sync_ist->file_index,
2561                    ost->sync_ist->st->index);
2562         if (ost->stream_copy)
2563             av_log(NULL, AV_LOG_INFO, " (copy)");
2564         else
2565             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2566                    input_streams[ost->source_index]->dec->name : "?",
2567                    ost->enc ? ost->enc->name : "?");
2568         av_log(NULL, AV_LOG_INFO, "\n");
2569     }
2570
2571     if (ret) {
2572         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2573         return ret;
2574     }
2575
2576     if (want_sdp) {
2577         print_sdp();
2578     }
2579
2580     return 0;
2581 }
2582
2583 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2584 static int need_output(void)
2585 {
2586     int i;
2587
2588     for (i = 0; i < nb_output_streams; i++) {
2589         OutputStream *ost    = output_streams[i];
2590         OutputFile *of       = output_files[ost->file_index];
2591         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2592
2593         if (ost->finished ||
2594             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2595             continue;
2596         if (ost->frame_number >= ost->max_frames) {
2597             int j;
2598             for (j = 0; j < of->ctx->nb_streams; j++)
2599                 close_output_stream(output_streams[of->ost_index + j]);
2600             continue;
2601         }
2602
2603         return 1;
2604     }
2605
2606     return 0;
2607 }
2608
2609 /**
2610  * Select the output stream to process.
2611  *
2612  * @return  selected output stream, or NULL if none available
2613  */
2614 static OutputStream *choose_output(void)
2615 {
2616     int i;
2617     int64_t opts_min = INT64_MAX;
2618     OutputStream *ost_min = NULL;
2619
2620     for (i = 0; i < nb_output_streams; i++) {
2621         OutputStream *ost = output_streams[i];
2622         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2623                                     AV_TIME_BASE_Q);
2624         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2625             opts_min = opts;
2626             ost_min  = ost;
2627         }
2628     }
2629     return ost_min;
2630 }
2631
2632 static int check_keyboard_interaction(int64_t cur_time)
2633 {
2634     int i, ret, key;
2635     static int64_t last_time;
2636     if (received_nb_signals)
2637         return AVERROR_EXIT;
2638     /* read_key() returns 0 on EOF */
2639     if(cur_time - last_time >= 100000 && !run_as_daemon){
2640         key =  read_key();
2641         last_time = cur_time;
2642     }else
2643         key = -1;
2644     if (key == 'q')
2645         return AVERROR_EXIT;
2646     if (key == '+') av_log_set_level(av_log_get_level()+10);
2647     if (key == '-') av_log_set_level(av_log_get_level()-10);
2648     if (key == 's') qp_hist     ^= 1;
2649     if (key == 'h'){
2650         if (do_hex_dump){
2651             do_hex_dump = do_pkt_dump = 0;
2652         } else if(do_pkt_dump){
2653             do_hex_dump = 1;
2654         } else
2655             do_pkt_dump = 1;
2656         av_log_set_level(AV_LOG_DEBUG);
2657     }
2658     if (key == 'c' || key == 'C'){
2659         char buf[4096], target[64], command[256], arg[256] = {0};
2660         double time;
2661         int k, n = 0;
2662         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2663         i = 0;
2664         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2665             if (k > 0)
2666                 buf[i++] = k;
2667         buf[i] = 0;
2668         if (k > 0 &&
2669             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2670             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2671                    target, time, command, arg);
2672             for (i = 0; i < nb_filtergraphs; i++) {
2673                 FilterGraph *fg = filtergraphs[i];
2674                 if (fg->graph) {
2675                     if (time < 0) {
2676                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2677                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2678                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2679                     } else {
2680                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2681                     }
2682                 }
2683             }
2684         } else {
2685             av_log(NULL, AV_LOG_ERROR,
2686                    "Parse error, at least 3 arguments were expected, "
2687                    "only %d given in string '%s'\n", n, buf);
2688         }
2689     }
2690     if (key == 'd' || key == 'D'){
2691         int debug=0;
2692         if(key == 'D') {
2693             debug = input_streams[0]->st->codec->debug<<1;
2694             if(!debug) debug = 1;
2695             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2696                 debug += debug;
2697         }else
2698             if(scanf("%d", &debug)!=1)
2699                 fprintf(stderr,"error parsing debug value\n");
2700         for(i=0;i<nb_input_streams;i++) {
2701             input_streams[i]->st->codec->debug = debug;
2702         }
2703         for(i=0;i<nb_output_streams;i++) {
2704             OutputStream *ost = output_streams[i];
2705             ost->st->codec->debug = debug;
2706         }
2707         if(debug) av_log_set_level(AV_LOG_DEBUG);
2708         fprintf(stderr,"debug=%d\n", debug);
2709     }
2710     if (key == '?'){
2711         fprintf(stderr, "key    function\n"
2712                         "?      show this help\n"
2713                         "+      increase verbosity\n"
2714                         "-      decrease verbosity\n"
2715                         "c      Send command to filtergraph\n"
2716                         "D      cycle through available debug modes\n"
2717                         "h      dump packets/hex press to cycle through the 3 states\n"
2718                         "q      quit\n"
2719                         "s      Show QP histogram\n"
2720         );
2721     }
2722     return 0;
2723 }
2724
2725 #if HAVE_PTHREADS
2726 static void *input_thread(void *arg)
2727 {
2728     InputFile *f = arg;
2729     int ret = 0;
2730
2731     while (!transcoding_finished && ret >= 0) {
2732         AVPacket pkt;
2733         ret = av_read_frame(f->ctx, &pkt);
2734
2735         if (ret == AVERROR(EAGAIN)) {
2736             av_usleep(10000);
2737             ret = 0;
2738             continue;
2739         } else if (ret < 0)
2740             break;
2741
2742         pthread_mutex_lock(&f->fifo_lock);
2743         while (!av_fifo_space(f->fifo))
2744             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2745
2746         av_dup_packet(&pkt);
2747         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2748
2749         pthread_mutex_unlock(&f->fifo_lock);
2750     }
2751
2752     f->finished = 1;
2753     return NULL;
2754 }
2755
2756 static void free_input_threads(void)
2757 {
2758     int i;
2759
2760     if (nb_input_files == 1)
2761         return;
2762
2763     transcoding_finished = 1;
2764
2765     for (i = 0; i < nb_input_files; i++) {
2766         InputFile *f = input_files[i];
2767         AVPacket pkt;
2768
2769         if (!f->fifo || f->joined)
2770             continue;
2771
2772         pthread_mutex_lock(&f->fifo_lock);
2773         while (av_fifo_size(f->fifo)) {
2774             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2775             av_free_packet(&pkt);
2776         }
2777         pthread_cond_signal(&f->fifo_cond);
2778         pthread_mutex_unlock(&f->fifo_lock);
2779
2780         pthread_join(f->thread, NULL);
2781         f->joined = 1;
2782
2783         while (av_fifo_size(f->fifo)) {
2784             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2785             av_free_packet(&pkt);
2786         }
2787         av_fifo_free(f->fifo);
2788     }
2789 }
2790
2791 static int init_input_threads(void)
2792 {
2793     int i, ret;
2794
2795     if (nb_input_files == 1)
2796         return 0;
2797
2798     for (i = 0; i < nb_input_files; i++) {
2799         InputFile *f = input_files[i];
2800
2801         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2802             return AVERROR(ENOMEM);
2803
2804         pthread_mutex_init(&f->fifo_lock, NULL);
2805         pthread_cond_init (&f->fifo_cond, NULL);
2806
2807         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2808             return AVERROR(ret);
2809     }
2810     return 0;
2811 }
2812
2813 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2814 {
2815     int ret = 0;
2816
2817     pthread_mutex_lock(&f->fifo_lock);
2818
2819     if (av_fifo_size(f->fifo)) {
2820         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2821         pthread_cond_signal(&f->fifo_cond);
2822     } else {
2823         if (f->finished)
2824             ret = AVERROR_EOF;
2825         else
2826             ret = AVERROR(EAGAIN);
2827     }
2828
2829     pthread_mutex_unlock(&f->fifo_lock);
2830
2831     return ret;
2832 }
2833 #endif
2834
2835 static int get_input_packet(InputFile *f, AVPacket *pkt)
2836 {
2837     if (f->rate_emu) {
2838         int i;
2839         for (i = 0; i < f->nb_streams; i++) {
2840             InputStream *ist = input_streams[f->ist_index + i];
2841             int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
2842             int64_t now = av_gettime() - ist->start;
2843             if (pts > now)
2844                 return AVERROR(EAGAIN);
2845         }
2846     }
2847
2848 #if HAVE_PTHREADS
2849     if (nb_input_files > 1)
2850         return get_input_packet_mt(f, pkt);
2851 #endif
2852     return av_read_frame(f->ctx, pkt);
2853 }
2854
2855 static int got_eagain(void)
2856 {
2857     int i;
2858     for (i = 0; i < nb_output_streams; i++)
2859         if (output_streams[i]->unavailable)
2860             return 1;
2861     return 0;
2862 }
2863
2864 static void reset_eagain(void)
2865 {
2866     int i;
2867     for (i = 0; i < nb_input_files; i++)
2868         input_files[i]->eagain = 0;
2869     for (i = 0; i < nb_output_streams; i++)
2870         output_streams[i]->unavailable = 0;
2871 }
2872
2873 /*
2874  * Return
2875  * - 0 -- one packet was read and processed
2876  * - AVERROR(EAGAIN) -- no packets were available for selected file,
2877  *   this function should be called again
2878  * - AVERROR_EOF -- this function should not be called again
2879  */
2880 static int process_input(int file_index)
2881 {
2882     InputFile *ifile = input_files[file_index];
2883     AVFormatContext *is;
2884     InputStream *ist;
2885     AVPacket pkt;
2886     int ret, i, j;
2887
2888     is  = ifile->ctx;
2889     ret = get_input_packet(ifile, &pkt);
2890
2891     if (ret == AVERROR(EAGAIN)) {
2892         ifile->eagain = 1;
2893         return ret;
2894     }
2895     if (ret < 0) {
2896         if (ret != AVERROR_EOF) {
2897             print_error(is->filename, ret);
2898             if (exit_on_error)
2899                 exit(1);
2900         }
2901         ifile->eof_reached = 1;
2902
2903         for (i = 0; i < ifile->nb_streams; i++) {
2904             ist = input_streams[ifile->ist_index + i];
2905             if (ist->decoding_needed)
2906                 output_packet(ist, NULL);
2907
2908             /* mark all outputs that don't go through lavfi as finished */
2909             for (j = 0; j < nb_output_streams; j++) {
2910                 OutputStream *ost = output_streams[j];
2911
2912                 if (ost->source_index == ifile->ist_index + i &&
2913                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2914                     close_output_stream(ost);
2915             }
2916         }
2917
2918         return AVERROR(EAGAIN);
2919     }
2920
2921     reset_eagain();
2922
2923     if (do_pkt_dump) {
2924         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2925                          is->streams[pkt.stream_index]);
2926     }
2927     /* the following test is needed in case new streams appear
2928        dynamically in stream : we ignore them */
2929     if (pkt.stream_index >= ifile->nb_streams) {
2930         report_new_stream(file_index, &pkt);
2931         goto discard_packet;
2932     }
2933
2934     ist = input_streams[ifile->ist_index + pkt.stream_index];
2935     if (ist->discard)
2936         goto discard_packet;
2937
2938     if (debug_ts) {
2939         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
2940                "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",
2941                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2942                av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
2943                av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
2944                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2945                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2946                av_ts2str(input_files[ist->file_index]->ts_offset),
2947                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
2948     }
2949
2950     if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
2951         int64_t stime, stime2;
2952         // Correcting starttime based on the enabled streams
2953         // 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.
2954         //       so we instead do it here as part of discontinuity handling
2955         if (   ist->next_dts == AV_NOPTS_VALUE
2956             && ifile->ts_offset == -is->start_time
2957             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
2958             int64_t new_start_time = INT64_MAX;
2959             for (i=0; i<is->nb_streams; i++) {
2960                 AVStream *st = is->streams[i];
2961                 if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
2962                     continue;
2963                 new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
2964             }
2965             if (new_start_time > is->start_time) {
2966                 av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
2967                 ifile->ts_offset = -new_start_time;
2968             }
2969         }
2970
2971         stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
2972         stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
2973         ist->wrap_correction_done = 1;
2974
2975         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2976             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
2977             ist->wrap_correction_done = 0;
2978         }
2979         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2980             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
2981             ist->wrap_correction_done = 0;
2982         }
2983     }
2984
2985     if (pkt.dts != AV_NOPTS_VALUE)
2986         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2987     if (pkt.pts != AV_NOPTS_VALUE)
2988         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2989
2990     if (pkt.pts != AV_NOPTS_VALUE)
2991         pkt.pts *= ist->ts_scale;
2992     if (pkt.dts != AV_NOPTS_VALUE)
2993         pkt.dts *= ist->ts_scale;
2994
2995     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts == AV_NOPTS_VALUE && !copy_ts
2996         && (is->iformat->flags & AVFMT_TS_DISCONT) && ifile->last_ts != AV_NOPTS_VALUE) {
2997         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2998         int64_t delta   = pkt_dts - ifile->last_ts;
2999         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3000             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3001                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)){
3002             ifile->ts_offset -= delta;
3003             av_log(NULL, AV_LOG_DEBUG,
3004                    "Inter stream timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3005                    delta, ifile->ts_offset);
3006             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3007             if (pkt.pts != AV_NOPTS_VALUE)
3008                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3009         }
3010     }
3011
3012     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
3013         !copy_ts) {
3014         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3015         int64_t delta   = pkt_dts - ist->next_dts;
3016         if (is->iformat->flags & AVFMT_TS_DISCONT) {
3017         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3018             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3019                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3020             pkt_dts+1<ist->pts){
3021             ifile->ts_offset -= delta;
3022             av_log(NULL, AV_LOG_DEBUG,
3023                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3024                    delta, ifile->ts_offset);
3025             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3026             if (pkt.pts != AV_NOPTS_VALUE)
3027                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3028         }
3029         } else {
3030             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3031                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
3032                ) {
3033                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3034                 pkt.dts = AV_NOPTS_VALUE;
3035             }
3036             if (pkt.pts != AV_NOPTS_VALUE){
3037                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3038                 delta   = pkt_pts - ist->next_dts;
3039                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3040                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
3041                    ) {
3042                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3043                     pkt.pts = AV_NOPTS_VALUE;
3044                 }
3045             }
3046         }
3047     }
3048
3049     if (pkt.dts != AV_NOPTS_VALUE)
3050         ifile->last_ts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3051
3052     if (debug_ts) {
3053         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",
3054                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
3055                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3056                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3057                av_ts2str(input_files[ist->file_index]->ts_offset),
3058                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3059     }
3060
3061     sub2video_heartbeat(ist, pkt.pts);
3062
3063     ret = output_packet(ist, &pkt);
3064     if (ret < 0) {
3065         char buf[128];
3066         av_strerror(ret, buf, sizeof(buf));
3067         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
3068                 ist->file_index, ist->st->index, buf);
3069         if (exit_on_error)
3070             exit(1);
3071     }
3072
3073 discard_packet:
3074     av_free_packet(&pkt);
3075
3076     return 0;
3077 }
3078
3079 /**
3080  * Perform a step of transcoding for the specified filter graph.
3081  *
3082  * @param[in]  graph     filter graph to consider
3083  * @param[out] best_ist  input stream where a frame would allow to continue
3084  * @return  0 for success, <0 for error
3085  */
3086 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
3087 {
3088     int i, ret;
3089     int nb_requests, nb_requests_max = 0;
3090     InputFilter *ifilter;
3091     InputStream *ist;
3092
3093     *best_ist = NULL;
3094     ret = avfilter_graph_request_oldest(graph->graph);
3095     if (ret >= 0)
3096         return reap_filters();
3097
3098     if (ret == AVERROR_EOF) {
3099         ret = reap_filters();
3100         for (i = 0; i < graph->nb_outputs; i++)
3101             close_output_stream(graph->outputs[i]->ost);
3102         return ret;
3103     }
3104     if (ret != AVERROR(EAGAIN))
3105         return ret;
3106
3107     for (i = 0; i < graph->nb_inputs; i++) {
3108         ifilter = graph->inputs[i];
3109         ist = ifilter->ist;
3110         if (input_files[ist->file_index]->eagain ||
3111             input_files[ist->file_index]->eof_reached)
3112             continue;
3113         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
3114         if (nb_requests > nb_requests_max) {
3115             nb_requests_max = nb_requests;
3116             *best_ist = ist;
3117         }
3118     }
3119
3120     if (!*best_ist)
3121         for (i = 0; i < graph->nb_outputs; i++)
3122             graph->outputs[i]->ost->unavailable = 1;
3123
3124     return 0;
3125 }
3126
3127 /**
3128  * Run a single step of transcoding.
3129  *
3130  * @return  0 for success, <0 for error
3131  */
3132 static int transcode_step(void)
3133 {
3134     OutputStream *ost;
3135     InputStream  *ist;
3136     int ret;
3137
3138     ost = choose_output();
3139     if (!ost) {
3140         if (got_eagain()) {
3141             reset_eagain();
3142             av_usleep(10000);
3143             return 0;
3144         }
3145         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
3146         return AVERROR_EOF;
3147     }
3148
3149     if (ost->filter) {
3150         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
3151             return ret;
3152         if (!ist)
3153             return 0;
3154     } else {
3155         av_assert0(ost->source_index >= 0);
3156         ist = input_streams[ost->source_index];
3157     }
3158
3159     ret = process_input(ist->file_index);
3160     if (ret == AVERROR(EAGAIN)) {
3161         if (input_files[ist->file_index]->eagain)
3162             ost->unavailable = 1;
3163         return 0;
3164     }
3165     if (ret < 0)
3166         return ret == AVERROR_EOF ? 0 : ret;
3167
3168     return reap_filters();
3169 }
3170
3171 /*
3172  * The following code is the main loop of the file converter
3173  */
3174 static int transcode(void)
3175 {
3176     int ret, i;
3177     AVFormatContext *os;
3178     OutputStream *ost;
3179     InputStream *ist;
3180     int64_t timer_start;
3181
3182     ret = transcode_init();
3183     if (ret < 0)
3184         goto fail;
3185
3186     if (stdin_interaction) {
3187         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3188     }
3189
3190     timer_start = av_gettime();
3191
3192 #if HAVE_PTHREADS
3193     if ((ret = init_input_threads()) < 0)
3194         goto fail;
3195 #endif
3196
3197     while (!received_sigterm) {
3198         int64_t cur_time= av_gettime();
3199
3200         /* if 'q' pressed, exits */
3201         if (stdin_interaction)
3202             if (check_keyboard_interaction(cur_time) < 0)
3203                 break;
3204
3205         /* check if there's any stream where output is still needed */
3206         if (!need_output()) {
3207             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3208             break;
3209         }
3210
3211         ret = transcode_step();
3212         if (ret < 0) {
3213             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
3214                 continue;
3215
3216             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
3217             break;
3218         }
3219
3220         /* dump report by using the output first video and audio streams */
3221         print_report(0, timer_start, cur_time);
3222     }
3223 #if HAVE_PTHREADS
3224     free_input_threads();
3225 #endif
3226
3227     /* at the end of stream, we must flush the decoder buffers */
3228     for (i = 0; i < nb_input_streams; i++) {
3229         ist = input_streams[i];
3230         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3231             output_packet(ist, NULL);
3232         }
3233     }
3234     flush_encoders();
3235
3236     term_exit();
3237
3238     /* write the trailer if needed and close file */
3239     for (i = 0; i < nb_output_files; i++) {
3240         os = output_files[i]->ctx;
3241         av_write_trailer(os);
3242     }
3243
3244     /* dump report by using the first video and audio streams */
3245     print_report(1, timer_start, av_gettime());
3246
3247     /* close each encoder */
3248     for (i = 0; i < nb_output_streams; i++) {
3249         ost = output_streams[i];
3250         if (ost->encoding_needed) {
3251             av_freep(&ost->st->codec->stats_in);
3252             avcodec_close(ost->st->codec);
3253         }
3254     }
3255
3256     /* close each decoder */
3257     for (i = 0; i < nb_input_streams; i++) {
3258         ist = input_streams[i];
3259         if (ist->decoding_needed) {
3260             avcodec_close(ist->st->codec);
3261         }
3262     }
3263
3264     /* finished ! */
3265     ret = 0;
3266
3267  fail:
3268 #if HAVE_PTHREADS
3269     free_input_threads();
3270 #endif
3271
3272     if (output_streams) {
3273         for (i = 0; i < nb_output_streams; i++) {
3274             ost = output_streams[i];
3275             if (ost) {
3276                 if (ost->stream_copy)
3277                     av_freep(&ost->st->codec->extradata);
3278                 if (ost->logfile) {
3279                     fclose(ost->logfile);
3280                     ost->logfile = NULL;
3281                 }
3282                 av_freep(&ost->st->codec->subtitle_header);
3283                 av_freep(&ost->forced_kf_pts);
3284                 av_freep(&ost->apad);
3285                 av_dict_free(&ost->opts);
3286                 av_dict_free(&ost->swr_opts);
3287                 av_dict_free(&ost->resample_opts);
3288             }
3289         }
3290     }
3291     return ret;
3292 }
3293
3294
3295 static int64_t getutime(void)
3296 {
3297 #if HAVE_GETRUSAGE
3298     struct rusage rusage;
3299
3300     getrusage(RUSAGE_SELF, &rusage);
3301     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3302 #elif HAVE_GETPROCESSTIMES
3303     HANDLE proc;
3304     FILETIME c, e, k, u;
3305     proc = GetCurrentProcess();
3306     GetProcessTimes(proc, &c, &e, &k, &u);
3307     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3308 #else
3309     return av_gettime();
3310 #endif
3311 }
3312
3313 static int64_t getmaxrss(void)
3314 {
3315 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3316     struct rusage rusage;
3317     getrusage(RUSAGE_SELF, &rusage);
3318     return (int64_t)rusage.ru_maxrss * 1024;
3319 #elif HAVE_GETPROCESSMEMORYINFO
3320     HANDLE proc;
3321     PROCESS_MEMORY_COUNTERS memcounters;
3322     proc = GetCurrentProcess();
3323     memcounters.cb = sizeof(memcounters);
3324     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3325     return memcounters.PeakPagefileUsage;
3326 #else
3327     return 0;
3328 #endif
3329 }
3330
3331 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3332 {
3333 }
3334
3335 int main(int argc, char **argv)
3336 {
3337     int ret;
3338     int64_t ti;
3339
3340     atexit(exit_program);
3341
3342     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3343
3344     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3345     parse_loglevel(argc, argv, options);
3346
3347     if(argc>1 && !strcmp(argv[1], "-d")){
3348         run_as_daemon=1;
3349         av_log_set_callback(log_callback_null);
3350         argc--;
3351         argv++;
3352     }
3353
3354     avcodec_register_all();
3355 #if CONFIG_AVDEVICE
3356     avdevice_register_all();
3357 #endif
3358     avfilter_register_all();
3359     av_register_all();
3360     avformat_network_init();
3361
3362     show_banner(argc, argv, options);
3363
3364     term_init();
3365
3366     /* parse options and open all input/output files */
3367     ret = ffmpeg_parse_options(argc, argv);
3368     if (ret < 0)
3369         exit(1);
3370
3371     if (nb_output_files <= 0 && nb_input_files == 0) {
3372         show_usage();
3373         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3374         exit(1);
3375     }
3376
3377     /* file converter / grab */
3378     if (nb_output_files <= 0) {
3379         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3380         exit(1);
3381     }
3382
3383 //     if (nb_input_files == 0) {
3384 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3385 //         exit(1);
3386 //     }
3387
3388     current_time = ti = getutime();
3389     if (transcode() < 0)
3390         exit(1);
3391     ti = getutime() - ti;
3392     if (do_benchmark) {
3393         printf("bench: utime=%0.3fs\n", ti / 1000000.0);
3394     }
3395     av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" frames successfully decoded, %"PRIu64" decoding errors\n",
3396            decode_error_stat[0], decode_error_stat[1]);
3397     if (2*decode_error_stat[0] < decode_error_stat[1])
3398         exit(254);
3399
3400     exit(received_nb_signals ? 255 : 0);
3401     return 0;
3402 }