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 #include <stdint.h>
  34
  35 #if HAVE_ISATTY
  36 #if HAVE_IO_H
  37 #include <io.h>
  38 #endif
  39 #if HAVE_UNISTD_H
  40 #include <unistd.h>
  41 #endif
  42 #endif
  43
  44 #include "libavformat/avformat.h"
  45 #include "libavdevice/avdevice.h"
  46 #include "libswresample/swresample.h"
  47 #include "libavutil/opt.h"
  48 #include "libavutil/channel_layout.h"
  49 #include "libavutil/parseutils.h"
  50 #include "libavutil/samplefmt.h"
  51 #include "libavutil/fifo.h"
  52 #include "libavutil/intreadwrite.h"
  53 #include "libavutil/dict.h"
  54 #include "libavutil/mathematics.h"
  55 #include "libavutil/pixdesc.h"
  56 #include "libavutil/avstring.h"
  57 #include "libavutil/libm.h"
  58 #include "libavutil/imgutils.h"
  59 #include "libavutil/timestamp.h"
  60 #include "libavutil/bprint.h"
  61 #include "libavutil/time.h"
  62 #include "libavformat/os_support.h"
  63
  64 #include "libavformat/ffm.h" // not public API
  65
  66 # include "libavfilter/avcodec.h"
  67 # include "libavfilter/avfilter.h"
  68 # include "libavfilter/buffersrc.h"
  69 # include "libavfilter/buffersink.h"
  70
  71 #if HAVE_SYS_RESOURCE_H
  72 #include <sys/time.h>
  73 #include <sys/types.h>
  74 #include <sys/resource.h>
  75 #elif HAVE_GETPROCESSTIMES
  76 #include <windows.h>
  77 #endif
  78 #if HAVE_GETPROCESSMEMORYINFO
  79 #include <windows.h>
  80 #include <psapi.h>
  81 #endif
  82
  83 #if HAVE_SYS_SELECT_H
  84 #include <sys/select.h>
  85 #endif
  86
  87 #if HAVE_TERMIOS_H
  88 #include <fcntl.h>
  89 #include <sys/ioctl.h>
  90 #include <sys/time.h>
  91 #include <termios.h>
  92 #elif HAVE_KBHIT
  93 #include <conio.h>
  94 #endif
  95
  96 #if HAVE_PTHREADS
  97 #include <pthread.h>
  98 #endif
  99
 100 #include <time.h>
 101
 102 #include "ffmpeg.h"
 103 #include "cmdutils.h"
 104
 105 #include "libavutil/avassert.h"
 106
 107 const char program_name[] = "ffmpeg";
 108 const int program_birth_year = 2000;
 109
 110 static FILE *vstats_file;
 111
 112 const char *const forced_keyframes_const_names[] = {
 113     "n",
 114     "n_forced",
 115     "prev_forced_n",
 116     "prev_forced_t",
 117     "t",
 118     NULL
 119 };
 120
 121 static void do_video_stats(OutputStream *ost, int frame_size);
 122 static int64_t getutime(void);
 123 static int64_t getmaxrss(void);
 124
 125 static int run_as_daemon  = 0;
 126 static int nb_frames_dup = 0;
 127 static int nb_frames_drop = 0;
 128 static int64_t decode_error_stat[2];
 129
 130 static int current_time;
 131 AVIOContext *progress_avio = NULL;
 132
 133 static uint8_t *subtitle_out;
 134
 135 #if HAVE_PTHREADS
 136 /* signal to input threads that they should exit; set by the main thread */
 137 static int transcoding_finished;
 138 #endif
 139
 140 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
 141
 142 InputStream **input_streams = NULL;
 143 int        nb_input_streams = 0;
 144 InputFile   **input_files   = NULL;
 145 int        nb_input_files   = 0;
 146
 147 OutputStream **output_streams = NULL;
 148 int         nb_output_streams = 0;
 149 OutputFile   **output_files   = NULL;
 150 int         nb_output_files   = 0;
 151
 152 FilterGraph **filtergraphs;
 153 int        nb_filtergraphs;
 154
 155 #if HAVE_TERMIOS_H
 156
 157 /* init terminal so that we can grab keys */
 158 static struct termios oldtty;
 159 static int restore_tty;
 160 #endif
 161
 162 static void free_input_threads(void);
 163
 164
 165 /* sub2video hack:
 166    Convert subtitles to video with alpha to insert them in filter graphs.
 167    This is a temporary solution until libavfilter gets real subtitles support.
 168  */
 169
 170 static int sub2video_get_blank_frame(InputStream *ist)
 171 {
 172     int ret;
 173     AVFrame *frame = ist->sub2video.frame;
 174
 175     av_frame_unref(frame);
 176     ist->sub2video.frame->width  = ist->sub2video.w;
 177     ist->sub2video.frame->height = ist->sub2video.h;
 178     ist->sub2video.frame->format = AV_PIX_FMT_RGB32;
 179     if ((ret = av_frame_get_buffer(frame, 32)) < 0)
 180         return ret;
 181     memset(frame->data[0], 0, frame->height * frame->linesize[0]);
 182     return 0;
 183 }
 184
 185 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
 186                                 AVSubtitleRect *r)
 187 {
 188     uint32_t *pal, *dst2;
 189     uint8_t *src, *src2;
 190     int x, y;
 191
 192     if (r->type != SUBTITLE_BITMAP) {
 193         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
 194         return;
 195     }
 196     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
 197         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
 198         return;
 199     }
 200
 201     dst += r->y * dst_linesize + r->x * 4;
 202     src = r->pict.data[0];
 203     pal = (uint32_t *)r->pict.data[1];
 204     for (y = 0; y < r->h; y++) {
 205         dst2 = (uint32_t *)dst;
 206         src2 = src;
 207         for (x = 0; x < r->w; x++)
 208             *(dst2++) = pal[*(src2++)];
 209         dst += dst_linesize;
 210         src += r->pict.linesize[0];
 211     }
 212 }
 213
 214 static void sub2video_push_ref(InputStream *ist, int64_t pts)
 215 {
 216     AVFrame *frame = ist->sub2video.frame;
 217     int i;
 218
 219     av_assert1(frame->data[0]);
 220     ist->sub2video.last_pts = frame->pts = pts;
 221     for (i = 0; i < ist->nb_filters; i++)
 222         av_buffersrc_add_frame_flags(ist->filters[i]->filter, frame,
 223                                      AV_BUFFERSRC_FLAG_KEEP_REF |
 224                                      AV_BUFFERSRC_FLAG_PUSH);
 225 }
 226
 227 static void sub2video_update(InputStream *ist, AVSubtitle *sub)
 228 {
 229     int w = ist->sub2video.w, h = ist->sub2video.h;
 230     AVFrame *frame = ist->sub2video.frame;
 231     int8_t *dst;
 232     int     dst_linesize;
 233     int num_rects, i;
 234     int64_t pts, end_pts;
 235
 236     if (!frame)
 237         return;
 238     if (sub) {
 239         pts       = av_rescale_q(sub->pts + sub->start_display_time * 1000,
 240                                  AV_TIME_BASE_Q, ist->st->time_base);
 241         end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000,
 242                                  AV_TIME_BASE_Q, ist->st->time_base);
 243         num_rects = sub->num_rects;
 244     } else {
 245         pts       = ist->sub2video.end_pts;
 246         end_pts   = INT64_MAX;
 247         num_rects = 0;
 248     }
 249     if (sub2video_get_blank_frame(ist) < 0) {
 250         av_log(ist->st->codec, AV_LOG_ERROR,
 251                "Impossible to get a blank canvas.\n");
 252         return;
 253     }
 254     dst          = frame->data    [0];
 255     dst_linesize = frame->linesize[0];
 256     for (i = 0; i < num_rects; i++)
 257         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
 258     sub2video_push_ref(ist, pts);
 259     ist->sub2video.end_pts = end_pts;
 260 }
 261
 262 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
 263 {
 264     InputFile *infile = input_files[ist->file_index];
 265     int i, j, nb_reqs;
 266     int64_t pts2;
 267
 268     /* When a frame is read from a file, examine all sub2video streams in
 269        the same file and send the sub2video frame again. Otherwise, decoded
 270        video frames could be accumulating in the filter graph while a filter
 271        (possibly overlay) is desperately waiting for a subtitle frame. */
 272     for (i = 0; i < infile->nb_streams; i++) {
 273         InputStream *ist2 = input_streams[infile->ist_index + i];
 274         if (!ist2->sub2video.frame)
 275             continue;
 276         /* subtitles seem to be usually muxed ahead of other streams;
 277            if not, substracting a larger time here is necessary */
 278         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
 279         /* do not send the heartbeat frame if the subtitle is already ahead */
 280         if (pts2 <= ist2->sub2video.last_pts)
 281             continue;
 282         if (pts2 >= ist2->sub2video.end_pts || !ist2->sub2video.frame->data[0])
 283             sub2video_update(ist2, NULL);
 284         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
 285             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
 286         if (nb_reqs)
 287             sub2video_push_ref(ist2, pts2);
 288     }
 289 }
 290
 291 static void sub2video_flush(InputStream *ist)
 292 {
 293     int i;
 294
 295     if (ist->sub2video.end_pts < INT64_MAX)
 296         sub2video_update(ist, NULL);
 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 static void term_exit_sigsafe(void)
 304 {
 305 #if HAVE_TERMIOS_H
 306     if(restore_tty)
 307         tcsetattr (0, TCSANOW, &oldtty);
 308 #endif
 309 }
 310
 311 void term_exit(void)
 312 {
 313     av_log(NULL, AV_LOG_QUIET, "%s", "");
 314     term_exit_sigsafe();
 315 }
 316
 317 static volatile int received_sigterm = 0;
 318 static volatile int received_nb_signals = 0;
 319 static volatile int transcode_init_done = 0;
 320 static int main_return_code = 0;
 321
 322 static void
 323 sigterm_handler(int sig)
 324 {
 325     received_sigterm = sig;
 326     received_nb_signals++;
 327     term_exit_sigsafe();
 328     if(received_nb_signals > 3)
 329         exit(123);
 330 }
 331
 332 void term_init(void)
 333 {
 334 #if HAVE_TERMIOS_H
 335     if(!run_as_daemon){
 336         struct termios tty;
 337         int istty = 1;
 338 #if HAVE_ISATTY
 339         istty = isatty(0) && isatty(2);
 340 #endif
 341         if (istty && tcgetattr (0, &tty) == 0) {
 342             oldtty = tty;
 343             restore_tty = 1;
 344
 345             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
 346                              |INLCR|IGNCR|ICRNL|IXON);
 347             tty.c_oflag |= OPOST;
 348             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
 349             tty.c_cflag &= ~(CSIZE|PARENB);
 350             tty.c_cflag |= CS8;
 351             tty.c_cc[VMIN] = 1;
 352             tty.c_cc[VTIME] = 0;
 353
 354             tcsetattr (0, TCSANOW, &tty);
 355         }
 356         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
 357     }
 358 #endif
 359     avformat_network_deinit();
 360
 361     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
 362     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
 363 #ifdef SIGXCPU
 364     signal(SIGXCPU, sigterm_handler);
 365 #endif
 366 }
 367
 368 /* read a key without blocking */
 369 static int read_key(void)
 370 {
 371     unsigned char ch;
 372 #if HAVE_TERMIOS_H
 373     int n = 1;
 374     struct timeval tv;
 375     fd_set rfds;
 376
 377     FD_ZERO(&rfds);
 378     FD_SET(0, &rfds);
 379     tv.tv_sec = 0;
 380     tv.tv_usec = 0;
 381     n = select(1, &rfds, NULL, NULL, &tv);
 382     if (n > 0) {
 383         n = read(0, &ch, 1);
 384         if (n == 1)
 385             return ch;
 386
 387         return n;
 388     }
 389 #elif HAVE_KBHIT
 390 #    if HAVE_PEEKNAMEDPIPE
 391     static int is_pipe;
 392     static HANDLE input_handle;
 393     DWORD dw, nchars;
 394     if(!input_handle){
 395         input_handle = GetStdHandle(STD_INPUT_HANDLE);
 396         is_pipe = !GetConsoleMode(input_handle, &dw);
 397     }
 398
 399     if (stdin->_cnt > 0) {
 400         read(0, &ch, 1);
 401         return ch;
 402     }
 403     if (is_pipe) {
 404         /* When running under a GUI, you will end here. */
 405         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
 406             // input pipe may have been closed by the program that ran ffmpeg
 407             return -1;
 408         }
 409         //Read it
 410         if(nchars != 0) {
 411             read(0, &ch, 1);
 412             return ch;
 413         }else{
 414             return -1;
 415         }
 416     }
 417 #    endif
 418     if(kbhit())
 419         return(getch());
 420 #endif
 421     return -1;
 422 }
 423
 424 static int decode_interrupt_cb(void *ctx)
 425 {
 426     return received_nb_signals > transcode_init_done;
 427 }
 428
 429 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
 430
 431 static void ffmpeg_cleanup(int ret)
 432 {
 433     int i, j;
 434
 435     if (do_benchmark) {
 436         int maxrss = getmaxrss() / 1024;
 437         printf("bench: maxrss=%ikB\n", maxrss);
 438     }
 439
 440     for (i = 0; i < nb_filtergraphs; i++) {
 441         avfilter_graph_free(&filtergraphs[i]->graph);
 442         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
 443             av_freep(&filtergraphs[i]->inputs[j]->name);
 444             av_freep(&filtergraphs[i]->inputs[j]);
 445         }
 446         av_freep(&filtergraphs[i]->inputs);
 447         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
 448             av_freep(&filtergraphs[i]->outputs[j]->name);
 449             av_freep(&filtergraphs[i]->outputs[j]);
 450         }
 451         av_freep(&filtergraphs[i]->outputs);
 452         av_freep(&filtergraphs[i]->graph_desc);
 453         av_freep(&filtergraphs[i]);
 454     }
 455     av_freep(&filtergraphs);
 456
 457     av_freep(&subtitle_out);
 458
 459     /* close files */
 460     for (i = 0; i < nb_output_files; i++) {
 461         AVFormatContext *s = output_files[i]->ctx;
 462         if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE) && s->pb)
 463             avio_close(s->pb);
 464         avformat_free_context(s);
 465         av_dict_free(&output_files[i]->opts);
 466         av_freep(&output_files[i]);
 467     }
 468     for (i = 0; i < nb_output_streams; i++) {
 469         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
 470         while (bsfc) {
 471             AVBitStreamFilterContext *next = bsfc->next;
 472             av_bitstream_filter_close(bsfc);
 473             bsfc = next;
 474         }
 475         output_streams[i]->bitstream_filters = NULL;
 476         av_frame_free(&output_streams[i]->filtered_frame);
 477
 478         av_parser_close(output_streams[i]->parser);
 479
 480         av_freep(&output_streams[i]->forced_keyframes);
 481         av_expr_free(output_streams[i]->forced_keyframes_pexpr);
 482         av_freep(&output_streams[i]->avfilter);
 483         av_freep(&output_streams[i]->logfile_prefix);
 484         av_freep(&output_streams[i]);
 485     }
 486 #if HAVE_PTHREADS
 487     free_input_threads();
 488 #endif
 489     for (i = 0; i < nb_input_files; i++) {
 490         avformat_close_input(&input_files[i]->ctx);
 491         av_freep(&input_files[i]);
 492     }
 493     for (i = 0; i < nb_input_streams; i++) {
 494         av_frame_free(&input_streams[i]->decoded_frame);
 495         av_frame_free(&input_streams[i]->filter_frame);
 496         av_dict_free(&input_streams[i]->opts);
 497         avsubtitle_free(&input_streams[i]->prev_sub.subtitle);
 498         av_frame_free(&input_streams[i]->sub2video.frame);
 499         av_freep(&input_streams[i]->filters);
 500         av_freep(&input_streams[i]->hwaccel_device);
 501         av_freep(&input_streams[i]);
 502     }
 503
 504     if (vstats_file)
 505         fclose(vstats_file);
 506     av_free(vstats_filename);
 507
 508     av_freep(&input_streams);
 509     av_freep(&input_files);
 510     av_freep(&output_streams);
 511     av_freep(&output_files);
 512
 513     uninit_opts();
 514
 515     avformat_network_deinit();
 516
 517     if (received_sigterm) {
 518         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
 519                (int) received_sigterm);
 520     }
 521     term_exit();
 522 }
 523
 524 void assert_avoptions(AVDictionary *m)
 525 {
 526     AVDictionaryEntry *t;
 527     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
 528         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
 529         exit_program(1);
 530     }
 531 }
 532
 533 static void abort_codec_experimental(AVCodec *c, int encoder)
 534 {
 535     exit_program(1);
 536 }
 537
 538 static void update_benchmark(const char *fmt, ...)
 539 {
 540     if (do_benchmark_all) {
 541         int64_t t = getutime();
 542         va_list va;
 543         char buf[1024];
 544
 545         if (fmt) {
 546             va_start(va, fmt);
 547             vsnprintf(buf, sizeof(buf), fmt, va);
 548             va_end(va);
 549             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
 550         }
 551         current_time = t;
 552     }
 553 }
 554
 555 static void close_all_output_streams(OutputStream *ost, OSTFinished this_stream, OSTFinished others)
 556 {
 557     int i;
 558     for (i = 0; i < nb_output_streams; i++) {
 559         OutputStream *ost2 = output_streams[i];
 560         ost2->finished |= ost == ost2 ? this_stream : others;
 561     }
 562 }
 563
 564 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
 565 {
 566     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
 567     AVCodecContext          *avctx = ost->st->codec;
 568     int ret;
 569
 570     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
 571         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
 572         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
 573
 574     /*
 575      * Audio encoders may split the packets --  #frames in != #packets out.
 576      * But there is no reordering, so we can limit the number of output packets
 577      * by simply dropping them here.
 578      * Counting encoded video frames needs to be done separately because of
 579      * reordering, see do_video_out()
 580      */
 581     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
 582         if (ost->frame_number >= ost->max_frames) {
 583             av_free_packet(pkt);
 584             return;
 585         }
 586         ost->frame_number++;
 587     }
 588
 589     while (bsfc) {
 590         AVPacket new_pkt = *pkt;
 591         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
 592                                            &new_pkt.data, &new_pkt.size,
 593                                            pkt->data, pkt->size,
 594                                            pkt->flags & AV_PKT_FLAG_KEY);
 595         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
 596             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
 597             if(t) {
 598                 memcpy(t, new_pkt.data, new_pkt.size);
 599                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
 600                 new_pkt.data = t;
 601                 new_pkt.buf = NULL;
 602                 a = 1;
 603             } else
 604                 a = AVERROR(ENOMEM);
 605         }
 606         if (a > 0) {
 607             av_free_packet(pkt);
 608             new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
 609                                            av_buffer_default_free, NULL, 0);
 610             if (!new_pkt.buf)
 611                 exit_program(1);
 612         } else if (a < 0) {
 613             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
 614                    bsfc->filter->name, pkt->stream_index,
 615                    avctx->codec ? avctx->codec->name : "copy");
 616             print_error("", a);
 617             if (exit_on_error)
 618                 exit_program(1);
 619         }
 620         *pkt = new_pkt;
 621
 622         bsfc = bsfc->next;
 623     }
 624
 625     if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS) &&
 626         (avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) &&
 627         pkt->dts != AV_NOPTS_VALUE &&
 628         ost->last_mux_dts != AV_NOPTS_VALUE) {
 629       int64_t max = ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
 630       if (pkt->dts < max) {
 631         int loglevel = max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG;
 632         av_log(s, loglevel, "Non-monotonous DTS in output stream "
 633                "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
 634                ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
 635         if (exit_on_error) {
 636             av_log(NULL, AV_LOG_FATAL, "aborting.\n");
 637             exit_program(1);
 638         }
 639         av_log(s, loglevel, "changing to %"PRId64". This may result "
 640                "in incorrect timestamps in the output file.\n",
 641                max);
 642         if(pkt->pts >= pkt->dts)
 643             pkt->pts = FFMAX(pkt->pts, max);
 644         pkt->dts = max;
 645       }
 646     }
 647     ost->last_mux_dts = pkt->dts;
 648
 649     ost->data_size += pkt->size;
 650     ost->packets_written++;
 651
 652     pkt->stream_index = ost->index;
 653
 654     if (debug_ts) {
 655         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
 656                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
 657                 av_get_media_type_string(ost->st->codec->codec_type),
 658                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
 659                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
 660                 pkt->size
 661               );
 662     }
 663
 664     ret = av_interleaved_write_frame(s, pkt);
 665     if (ret < 0) {
 666         print_error("av_interleaved_write_frame()", ret);
 667         main_return_code = 1;
 668         close_all_output_streams(ost, MUXER_FINISHED | ENCODER_FINISHED, ENCODER_FINISHED);
 669     }
 670     av_free_packet(pkt);
 671 }
 672
 673 static void close_output_stream(OutputStream *ost)
 674 {
 675     OutputFile *of = output_files[ost->file_index];
 676
 677     ost->finished |= ENCODER_FINISHED;
 678     if (of->shortest) {
 679         int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, AV_TIME_BASE_Q);
 680         of->recording_time = FFMIN(of->recording_time, end);
 681     }
 682 }
 683
 684 static int check_recording_time(OutputStream *ost)
 685 {
 686     OutputFile *of = output_files[ost->file_index];
 687
 688     if (of->recording_time != INT64_MAX &&
 689         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
 690                       AV_TIME_BASE_Q) >= 0) {
 691         close_output_stream(ost);
 692         return 0;
 693     }
 694     return 1;
 695 }
 696
 697 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
 698                          AVFrame *frame)
 699 {
 700     AVCodecContext *enc = ost->st->codec;
 701     AVPacket pkt;
 702     int got_packet = 0;
 703
 704     av_init_packet(&pkt);
 705     pkt.data = NULL;
 706     pkt.size = 0;
 707
 708     if (!check_recording_time(ost))
 709         return;
 710
 711     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
 712         frame->pts = ost->sync_opts;
 713     ost->sync_opts = frame->pts + frame->nb_samples;
 714     ost->samples_encoded += frame->nb_samples;
 715     ost->frames_encoded++;
 716
 717     av_assert0(pkt.size || !pkt.data);
 718     update_benchmark(NULL);
 719     if (debug_ts) {
 720         av_log(NULL, AV_LOG_INFO, "encoder <- type:audio "
 721                "frame_pts:%s frame_pts_time:%s time_base:%d/%d\n",
 722                av_ts2str(frame->pts), av_ts2timestr(frame->pts, &enc->time_base),
 723                enc->time_base.num, enc->time_base.den);
 724     }
 725
 726     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
 727         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
 728         exit_program(1);
 729     }
 730     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
 731
 732     if (got_packet) {
 733         if (pkt.pts != AV_NOPTS_VALUE)
 734             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
 735         if (pkt.dts != AV_NOPTS_VALUE)
 736             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
 737         if (pkt.duration > 0)
 738             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
 739
 740         if (debug_ts) {
 741             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
 742                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
 743                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
 744                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
 745         }
 746
 747         write_frame(s, &pkt, ost);
 748     }
 749 }
 750
 751 static void do_subtitle_out(AVFormatContext *s,
 752                             OutputStream *ost,
 753                             InputStream *ist,
 754                             AVSubtitle *sub)
 755 {
 756     int subtitle_out_max_size = 1024 * 1024;
 757     int subtitle_out_size, nb, i;
 758     AVCodecContext *enc;
 759     AVPacket pkt;
 760     int64_t pts;
 761
 762     if (sub->pts == AV_NOPTS_VALUE) {
 763         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
 764         if (exit_on_error)
 765             exit_program(1);
 766         return;
 767     }
 768
 769     enc = ost->st->codec;
 770
 771     if (!subtitle_out) {
 772         subtitle_out = av_malloc(subtitle_out_max_size);
 773     }
 774
 775     /* Note: DVB subtitle need one packet to draw them and one other
 776        packet to clear them */
 777     /* XXX: signal it in the codec context ? */
 778     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
 779         nb = 2;
 780     else
 781         nb = 1;
 782
 783     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
 784     pts = sub->pts;
 785     if (output_files[ost->file_index]->start_time != AV_NOPTS_VALUE)
 786         pts -= output_files[ost->file_index]->start_time;
 787     for (i = 0; i < nb; i++) {
 788         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
 789         if (!check_recording_time(ost))
 790             return;
 791
 792         sub->pts = pts;
 793         // start_display_time is required to be 0
 794         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
 795         sub->end_display_time  -= sub->start_display_time;
 796         sub->start_display_time = 0;
 797         if (i == 1)
 798             sub->num_rects = 0;
 799
 800         ost->frames_encoded++;
 801
 802         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
 803                                                     subtitle_out_max_size, sub);
 804         if (subtitle_out_size < 0) {
 805             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
 806             exit_program(1);
 807         }
 808
 809         av_init_packet(&pkt);
 810         pkt.data = subtitle_out;
 811         pkt.size = subtitle_out_size;
 812         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
 813         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
 814         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
 815             /* XXX: the pts correction is handled here. Maybe handling
 816                it in the codec would be better */
 817             if (i == 0)
 818                 pkt.pts += 90 * sub->start_display_time;
 819             else
 820                 pkt.pts += 90 * sub->end_display_time;
 821         }
 822         write_frame(s, &pkt, ost);
 823     }
 824 }
 825
 826 static void do_video_out(AVFormatContext *s,
 827                          OutputStream *ost,
 828                          AVFrame *in_picture)
 829 {
 830     int ret, format_video_sync;
 831     AVPacket pkt;
 832     AVCodecContext *enc = ost->st->codec;
 833     int nb_frames, i;
 834     double sync_ipts, delta;
 835     double duration = 0;
 836     int frame_size = 0;
 837     InputStream *ist = NULL;
 838
 839     if (ost->source_index >= 0)
 840         ist = input_streams[ost->source_index];
 841
 842     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
 843         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
 844
 845     sync_ipts = in_picture->pts;
 846     delta = sync_ipts - ost->sync_opts + duration;
 847
 848     /* by default, we output a single frame */
 849     nb_frames = 1;
 850
 851     format_video_sync = video_sync_method;
 852     if (format_video_sync == VSYNC_AUTO) {
 853         if(!strcmp(s->oformat->name, "avi")) {
 854             format_video_sync = VSYNC_VFR;
 855         } else
 856             format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
 857         if (   ist
 858             && format_video_sync == VSYNC_CFR
 859             && input_files[ist->file_index]->ctx->nb_streams == 1
 860             && input_files[ist->file_index]->input_ts_offset == 0) {
 861             format_video_sync = VSYNC_VSCFR;
 862         }
 863         if (format_video_sync == VSYNC_CFR && copy_ts) {
 864             format_video_sync = VSYNC_VSCFR;
 865         }
 866     }
 867
 868     switch (format_video_sync) {
 869     case VSYNC_VSCFR:
 870         if (ost->frame_number == 0 && delta - duration >= 0.5) {
 871             av_log(NULL, AV_LOG_DEBUG, "Not duplicating %d initial frames\n", (int)lrintf(delta - duration));
 872             delta = duration;
 873             ost->sync_opts = lrint(sync_ipts);
 874         }
 875     case VSYNC_CFR:
 876         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
 877         if (delta < -1.1)
 878             nb_frames = 0;
 879         else if (delta > 1.1)
 880             nb_frames = lrintf(delta);
 881         break;
 882     case VSYNC_VFR:
 883         if (delta <= -0.6)
 884             nb_frames = 0;
 885         else if (delta > 0.6)
 886             ost->sync_opts = lrint(sync_ipts);
 887         break;
 888     case VSYNC_DROP:
 889     case VSYNC_PASSTHROUGH:
 890         ost->sync_opts = lrint(sync_ipts);
 891         break;
 892     default:
 893         av_assert0(0);
 894     }
 895
 896     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
 897     if (nb_frames == 0) {
 898         nb_frames_drop++;
 899         av_log(NULL, AV_LOG_VERBOSE,
 900                "*** dropping frame %d from stream %d at ts %"PRId64"\n",
 901                ost->frame_number, ost->st->index, in_picture->pts);
 902         return;
 903     } else if (nb_frames > 1) {
 904         if (nb_frames > dts_error_threshold * 30) {
 905             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
 906             nb_frames_drop++;
 907             return;
 908         }
 909         nb_frames_dup += nb_frames - 1;
 910         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
 911     }
 912
 913   /* duplicates frame if needed */
 914   for (i = 0; i < nb_frames; i++) {
 915     av_init_packet(&pkt);
 916     pkt.data = NULL;
 917     pkt.size = 0;
 918
 919     in_picture->pts = ost->sync_opts;
 920
 921 #if 1
 922     if (!check_recording_time(ost))
 923 #else
 924     if (ost->frame_number >= ost->max_frames)
 925 #endif
 926         return;
 927
 928     if (s->oformat->flags & AVFMT_RAWPICTURE &&
 929         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
 930         /* raw pictures are written as AVPicture structure to
 931            avoid any copies. We support temporarily the older
 932            method. */
 933         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
 934         enc->coded_frame->top_field_first  = in_picture->top_field_first;
 935         if (enc->coded_frame->interlaced_frame)
 936             enc->field_order = enc->coded_frame->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
 937         else
 938             enc->field_order = AV_FIELD_PROGRESSIVE;
 939         pkt.data   = (uint8_t *)in_picture;
 940         pkt.size   =  sizeof(AVPicture);
 941         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
 942         pkt.flags |= AV_PKT_FLAG_KEY;
 943
 944         write_frame(s, &pkt, ost);
 945     } else {
 946         int got_packet, forced_keyframe = 0;
 947         double pts_time;
 948
 949         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME) &&
 950             ost->top_field_first >= 0)
 951             in_picture->top_field_first = !!ost->top_field_first;
 952
 953         if (in_picture->interlaced_frame) {
 954             if (enc->codec->id == AV_CODEC_ID_MJPEG)
 955                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
 956             else
 957                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
 958         } else
 959             enc->field_order = AV_FIELD_PROGRESSIVE;
 960
 961         in_picture->quality = ost->st->codec->global_quality;
 962         if (!enc->me_threshold)
 963             in_picture->pict_type = 0;
 964
 965         pts_time = in_picture->pts != AV_NOPTS_VALUE ?
 966             in_picture->pts * av_q2d(enc->time_base) : NAN;
 967         if (ost->forced_kf_index < ost->forced_kf_count &&
 968             in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
 969             ost->forced_kf_index++;
 970             forced_keyframe = 1;
 971         } else if (ost->forced_keyframes_pexpr) {
 972             double res;
 973             ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
 974             res = av_expr_eval(ost->forced_keyframes_pexpr,
 975                                ost->forced_keyframes_expr_const_values, NULL);
 976             av_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
 977                     ost->forced_keyframes_expr_const_values[FKF_N],
 978                     ost->forced_keyframes_expr_const_values[FKF_N_FORCED],
 979                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N],
 980                     ost->forced_keyframes_expr_const_values[FKF_T],
 981                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T],
 982                     res);
 983             if (res) {
 984                 forced_keyframe = 1;
 985                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] =
 986                     ost->forced_keyframes_expr_const_values[FKF_N];
 987                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] =
 988                     ost->forced_keyframes_expr_const_values[FKF_T];
 989                 ost->forced_keyframes_expr_const_values[FKF_N_FORCED] += 1;
 990             }
 991
 992             ost->forced_keyframes_expr_const_values[FKF_N] += 1;
 993         }
 994
 995         if (forced_keyframe) {
 996             in_picture->pict_type = AV_PICTURE_TYPE_I;
 997             av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
 998         }
 999
1000         update_benchmark(NULL);
1001         if (debug_ts) {
1002             av_log(NULL, AV_LOG_INFO, "encoder <- type:video "
1003                    "frame_pts:%s frame_pts_time:%s time_base:%d/%d\n",
1004                    av_ts2str(in_picture->pts), av_ts2timestr(in_picture->pts, &enc->time_base),
1005                    enc->time_base.num, enc->time_base.den);
1006         }
1007
1008         ost->frames_encoded++;
1009
1010         ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
1011         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
1012         if (ret < 0) {
1013             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1014             exit_program(1);
1015         }
1016
1017         if (got_packet) {
1018             if (debug_ts) {
1019                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1020                        "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1021                        av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &enc->time_base),
1022                        av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &enc->time_base));
1023             }
1024
1025             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
1026                 pkt.pts = ost->sync_opts;
1027
1028             if (pkt.pts != AV_NOPTS_VALUE)
1029                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1030             if (pkt.dts != AV_NOPTS_VALUE)
1031                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1032
1033             if (debug_ts) {
1034                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1035                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1036                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1037                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1038             }
1039
1040             frame_size = pkt.size;
1041             write_frame(s, &pkt, ost);
1042
1043             /* if two pass, output log */
1044             if (ost->logfile && enc->stats_out) {
1045                 fprintf(ost->logfile, "%s", enc->stats_out);
1046             }
1047         }
1048     }
1049     ost->sync_opts++;
1050     /*
1051      * For video, number of frames in == number of packets out.
1052      * But there may be reordering, so we can't throw away frames on encoder
1053      * flush, we need to limit them here, before they go into encoder.
1054      */
1055     ost->frame_number++;
1056
1057     if (vstats_filename && frame_size)
1058         do_video_stats(ost, frame_size);
1059   }
1060 }
1061
1062 static double psnr(double d)
1063 {
1064     return -10.0 * log(d) / log(10.0);
1065 }
1066
1067 static void do_video_stats(OutputStream *ost, int frame_size)
1068 {
1069     AVCodecContext *enc;
1070     int frame_number;
1071     double ti1, bitrate, avg_bitrate;
1072
1073     /* this is executed just the first time do_video_stats is called */
1074     if (!vstats_file) {
1075         vstats_file = fopen(vstats_filename, "w");
1076         if (!vstats_file) {
1077             perror("fopen");
1078             exit_program(1);
1079         }
1080     }
1081
1082     enc = ost->st->codec;
1083     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1084         frame_number = ost->st->nb_frames;
1085         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1086         if (enc->flags&CODEC_FLAG_PSNR)
1087             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1088
1089         fprintf(vstats_file,"f_size= %6d ", frame_size);
1090         /* compute pts value */
1091         ti1 = ost->st->pts.val * av_q2d(enc->time_base);
1092         if (ti1 < 0.01)
1093             ti1 = 0.01;
1094
1095         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1096         avg_bitrate = (double)(ost->data_size * 8) / ti1 / 1000.0;
1097         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1098                (double)ost->data_size / 1024, ti1, bitrate, avg_bitrate);
1099         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1100     }
1101 }
1102
1103 /**
1104  * Get and encode new output from any of the filtergraphs, without causing
1105  * activity.
1106  *
1107  * @return  0 for success, <0 for severe errors
1108  */
1109 static int reap_filters(void)
1110 {
1111     AVFrame *filtered_frame = NULL;
1112     int i;
1113     int64_t frame_pts;
1114
1115     /* Reap all buffers present in the buffer sinks */
1116     for (i = 0; i < nb_output_streams; i++) {
1117         OutputStream *ost = output_streams[i];
1118         OutputFile    *of = output_files[ost->file_index];
1119         AVFilterContext *filter;
1120         AVCodecContext *enc = ost->st->codec;
1121         int ret = 0;
1122
1123         if (!ost->filter)
1124             continue;
1125         filter = ost->filter->filter;
1126
1127         if (!ost->filtered_frame && !(ost->filtered_frame = av_frame_alloc())) {
1128             return AVERROR(ENOMEM);
1129         }
1130         filtered_frame = ost->filtered_frame;
1131
1132         while (1) {
1133             ret = av_buffersink_get_frame_flags(filter, filtered_frame,
1134                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1135             if (ret < 0) {
1136                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1137                     av_log(NULL, AV_LOG_WARNING,
1138                            "Error in av_buffersink_get_frame_flags(): %s\n", av_err2str(ret));
1139                 }
1140                 break;
1141             }
1142             if (ost->finished) {
1143                 av_frame_unref(filtered_frame);
1144                 continue;
1145             }
1146             frame_pts = AV_NOPTS_VALUE;
1147             if (filtered_frame->pts != AV_NOPTS_VALUE) {
1148                 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1149                 filtered_frame->pts = frame_pts =
1150                     av_rescale_q(filtered_frame->pts, filter->inputs[0]->time_base, enc->time_base) -
1151                     av_rescale_q(start_time, AV_TIME_BASE_Q, enc->time_base);
1152             }
1153             //if (ost->source_index >= 0)
1154             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1155
1156             switch (filter->inputs[0]->type) {
1157             case AVMEDIA_TYPE_VIDEO:
1158                 filtered_frame->pts = frame_pts;
1159                 if (!ost->frame_aspect_ratio.num)
1160                     enc->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
1161
1162                 if (debug_ts) {
1163                     av_log(NULL, AV_LOG_INFO, "filter -> pts:%s pts_time:%s time_base:%d/%d\n",
1164                             av_ts2str(filtered_frame->pts), av_ts2timestr(filtered_frame->pts, &enc->time_base),
1165                             enc->time_base.num, enc->time_base.den);
1166                 }
1167
1168                 do_video_out(of->ctx, ost, filtered_frame);
1169                 break;
1170             case AVMEDIA_TYPE_AUDIO:
1171                 filtered_frame->pts = frame_pts;
1172                 if (!(enc->codec->capabilities & CODEC_CAP_PARAM_CHANGE) &&
1173                     enc->channels != av_frame_get_channels(filtered_frame)) {
1174                     av_log(NULL, AV_LOG_ERROR,
1175                            "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
1176                     break;
1177                 }
1178                 do_audio_out(of->ctx, ost, filtered_frame);
1179                 break;
1180             default:
1181                 // TODO support subtitle filters
1182                 av_assert0(0);
1183             }
1184
1185             av_frame_unref(filtered_frame);
1186         }
1187     }
1188
1189     return 0;
1190 }
1191
1192 static void print_final_stats(int64_t total_size)
1193 {
1194     uint64_t video_size = 0, audio_size = 0, extra_size = 0, other_size = 0;
1195     uint64_t subtitle_size = 0;
1196     uint64_t data_size = 0;
1197     float percent = -1.0;
1198     int i, j;
1199
1200     for (i = 0; i < nb_output_streams; i++) {
1201         OutputStream *ost = output_streams[i];
1202         switch (ost->st->codec->codec_type) {
1203             case AVMEDIA_TYPE_VIDEO: video_size += ost->data_size; break;
1204             case AVMEDIA_TYPE_AUDIO: audio_size += ost->data_size; break;
1205             case AVMEDIA_TYPE_SUBTITLE: subtitle_size += ost->data_size; break;
1206             default:                 other_size += ost->data_size; break;
1207         }
1208         extra_size += ost->st->codec->extradata_size;
1209         data_size  += ost->data_size;
1210     }
1211
1212     if (data_size && total_size >= data_size)
1213         percent = 100.0 * (total_size - data_size) / data_size;
1214
1215     av_log(NULL, AV_LOG_INFO, "\n");
1216     av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0fkB other streams:%1.0fkB global headers:%1.0fkB muxing overhead: ",
1217            video_size / 1024.0,
1218            audio_size / 1024.0,
1219            subtitle_size / 1024.0,
1220            other_size / 1024.0,
1221            extra_size / 1024.0);
1222     if (percent >= 0.0)
1223         av_log(NULL, AV_LOG_INFO, "%f%%", percent);
1224     else
1225         av_log(NULL, AV_LOG_INFO, "unknown");
1226     av_log(NULL, AV_LOG_INFO, "\n");
1227
1228     /* print verbose per-stream stats */
1229     for (i = 0; i < nb_input_files; i++) {
1230         InputFile *f = input_files[i];
1231         uint64_t total_packets = 0, total_size = 0;
1232
1233         av_log(NULL, AV_LOG_VERBOSE, "Input file #%d (%s):\n",
1234                i, f->ctx->filename);
1235
1236         for (j = 0; j < f->nb_streams; j++) {
1237             InputStream *ist = input_streams[f->ist_index + j];
1238             enum AVMediaType type = ist->st->codec->codec_type;
1239
1240             total_size    += ist->data_size;
1241             total_packets += ist->nb_packets;
1242
1243             av_log(NULL, AV_LOG_VERBOSE, "  Input stream #%d:%d (%s): ",
1244                    i, j, media_type_string(type));
1245             av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets read (%"PRIu64" bytes); ",
1246                    ist->nb_packets, ist->data_size);
1247
1248             if (ist->decoding_needed) {
1249                 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames decoded",
1250                        ist->frames_decoded);
1251                 if (type == AVMEDIA_TYPE_AUDIO)
1252                     av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ist->samples_decoded);
1253                 av_log(NULL, AV_LOG_VERBOSE, "; ");
1254             }
1255
1256             av_log(NULL, AV_LOG_VERBOSE, "\n");
1257         }
1258
1259         av_log(NULL, AV_LOG_VERBOSE, "  Total: %"PRIu64" packets (%"PRIu64" bytes) demuxed\n",
1260                total_packets, total_size);
1261     }
1262
1263     for (i = 0; i < nb_output_files; i++) {
1264         OutputFile *of = output_files[i];
1265         uint64_t total_packets = 0, total_size = 0;
1266
1267         av_log(NULL, AV_LOG_VERBOSE, "Output file #%d (%s):\n",
1268                i, of->ctx->filename);
1269
1270         for (j = 0; j < of->ctx->nb_streams; j++) {
1271             OutputStream *ost = output_streams[of->ost_index + j];
1272             enum AVMediaType type = ost->st->codec->codec_type;
1273
1274             total_size    += ost->data_size;
1275             total_packets += ost->packets_written;
1276
1277             av_log(NULL, AV_LOG_VERBOSE, "  Output stream #%d:%d (%s): ",
1278                    i, j, media_type_string(type));
1279             if (ost->encoding_needed) {
1280                 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames encoded",
1281                        ost->frames_encoded);
1282                 if (type == AVMEDIA_TYPE_AUDIO)
1283                     av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ost->samples_encoded);
1284                 av_log(NULL, AV_LOG_VERBOSE, "; ");
1285             }
1286
1287             av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets muxed (%"PRIu64" bytes); ",
1288                    ost->packets_written, ost->data_size);
1289
1290             av_log(NULL, AV_LOG_VERBOSE, "\n");
1291         }
1292
1293         av_log(NULL, AV_LOG_VERBOSE, "  Total: %"PRIu64" packets (%"PRIu64" bytes) muxed\n",
1294                total_packets, total_size);
1295     }
1296     if(video_size + data_size + audio_size + subtitle_size + extra_size == 0){
1297         av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1298     }
1299 }
1300
1301 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1302 {
1303     char buf[1024];
1304     AVBPrint buf_script;
1305     OutputStream *ost;
1306     AVFormatContext *oc;
1307     int64_t total_size;
1308     AVCodecContext *enc;
1309     int frame_number, vid, i;
1310     double bitrate;
1311     int64_t pts = INT64_MIN;
1312     static int64_t last_time = -1;
1313     static int qp_histogram[52];
1314     int hours, mins, secs, us;
1315
1316     if (!print_stats && !is_last_report && !progress_avio)
1317         return;
1318
1319     if (!is_last_report) {
1320         if (last_time == -1) {
1321             last_time = cur_time;
1322             return;
1323         }
1324         if ((cur_time - last_time) < 500000)
1325             return;
1326         last_time = cur_time;
1327     }
1328
1329
1330     oc = output_files[0]->ctx;
1331
1332     total_size = avio_size(oc->pb);
1333     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1334         total_size = avio_tell(oc->pb);
1335
1336     buf[0] = '\0';
1337     vid = 0;
1338     av_bprint_init(&buf_script, 0, 1);
1339     for (i = 0; i < nb_output_streams; i++) {
1340         float q = -1;
1341         ost = output_streams[i];
1342         enc = ost->st->codec;
1343         if (!ost->stream_copy && enc->coded_frame)
1344             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1345         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1346             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1347             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1348                        ost->file_index, ost->index, q);
1349         }
1350         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1351             float fps, t = (cur_time-timer_start) / 1000000.0;
1352
1353             frame_number = ost->frame_number;
1354             fps = t > 1 ? frame_number / t : 0;
1355             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1356                      frame_number, fps < 9.95, fps, q);
1357             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1358             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1359             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1360                        ost->file_index, ost->index, q);
1361             if (is_last_report)
1362                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1363             if (qp_hist) {
1364                 int j;
1365                 int qp = lrintf(q);
1366                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1367                     qp_histogram[qp]++;
1368                 for (j = 0; j < 32; j++)
1369                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1370             }
1371             if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1372                 int j;
1373                 double error, error_sum = 0;
1374                 double scale, scale_sum = 0;
1375                 double p;
1376                 char type[3] = { 'Y','U','V' };
1377                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1378                 for (j = 0; j < 3; j++) {
1379                     if (is_last_report) {
1380                         error = enc->error[j];
1381                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1382                     } else {
1383                         error = enc->coded_frame->error[j];
1384                         scale = enc->width * enc->height * 255.0 * 255.0;
1385                     }
1386                     if (j)
1387                         scale /= 4;
1388                     error_sum += error;
1389                     scale_sum += scale;
1390                     p = psnr(error / scale);
1391                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1392                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1393                                ost->file_index, ost->index, type[j] | 32, p);
1394                 }
1395                 p = psnr(error_sum / scale_sum);
1396                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1397                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1398                            ost->file_index, ost->index, p);
1399             }
1400             vid = 1;
1401         }
1402         /* compute min output value */
1403         if (ost->st->pts.val != AV_NOPTS_VALUE)
1404             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1405                                           ost->st->time_base, AV_TIME_BASE_Q));
1406     }
1407
1408     secs = pts / AV_TIME_BASE;
1409     us = pts % AV_TIME_BASE;
1410     mins = secs / 60;
1411     secs %= 60;
1412     hours = mins / 60;
1413     mins %= 60;
1414
1415     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1416
1417     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1418                                  "size=N/A time=");
1419     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1420                                  "size=%8.0fkB time=", total_size / 1024.0);
1421     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1422              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1423              (100 * us) / AV_TIME_BASE);
1424     if (bitrate < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1425                               "bitrate=N/A");
1426     else             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1427                               "bitrate=%6.1fkbits/s", bitrate);
1428     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
1429     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1430     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1431     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1432                hours, mins, secs, us);
1433
1434     if (nb_frames_dup || nb_frames_drop)
1435         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1436                 nb_frames_dup, nb_frames_drop);
1437     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1438     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1439
1440     if (print_stats || is_last_report) {
1441         if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
1442             fprintf(stderr, "%s    \r", buf);
1443         } else
1444             av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1445
1446     fflush(stderr);
1447     }
1448
1449     if (progress_avio) {
1450         av_bprintf(&buf_script, "progress=%s\n",
1451                    is_last_report ? "end" : "continue");
1452         avio_write(progress_avio, buf_script.str,
1453                    FFMIN(buf_script.len, buf_script.size - 1));
1454         avio_flush(progress_avio);
1455         av_bprint_finalize(&buf_script, NULL);
1456         if (is_last_report) {
1457             avio_close(progress_avio);
1458             progress_avio = NULL;
1459         }
1460     }
1461
1462     if (is_last_report)
1463         print_final_stats(total_size);
1464 }
1465
1466 static void flush_encoders(void)
1467 {
1468     int i, ret;
1469
1470     for (i = 0; i < nb_output_streams; i++) {
1471         OutputStream   *ost = output_streams[i];
1472         AVCodecContext *enc = ost->st->codec;
1473         AVFormatContext *os = output_files[ost->file_index]->ctx;
1474         int stop_encoding = 0;
1475
1476         if (!ost->encoding_needed)
1477             continue;
1478
1479         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1480             continue;
1481         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1482             continue;
1483
1484         for (;;) {
1485             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1486             const char *desc;
1487
1488             switch (ost->st->codec->codec_type) {
1489             case AVMEDIA_TYPE_AUDIO:
1490                 encode = avcodec_encode_audio2;
1491                 desc   = "Audio";
1492                 break;
1493             case AVMEDIA_TYPE_VIDEO:
1494                 encode = avcodec_encode_video2;
1495                 desc   = "Video";
1496                 break;
1497             default:
1498                 stop_encoding = 1;
1499             }
1500
1501             if (encode) {
1502                 AVPacket pkt;
1503                 int pkt_size;
1504                 int got_packet;
1505                 av_init_packet(&pkt);
1506                 pkt.data = NULL;
1507                 pkt.size = 0;
1508
1509                 update_benchmark(NULL);
1510                 ret = encode(enc, &pkt, NULL, &got_packet);
1511                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1512                 if (ret < 0) {
1513                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1514                     exit_program(1);
1515                 }
1516                 if (ost->logfile && enc->stats_out) {
1517                     fprintf(ost->logfile, "%s", enc->stats_out);
1518                 }
1519                 if (!got_packet) {
1520                     stop_encoding = 1;
1521                     break;
1522                 }
1523                 if (ost->finished & MUXER_FINISHED) {
1524                     av_free_packet(&pkt);
1525                     continue;
1526                 }
1527                 if (pkt.pts != AV_NOPTS_VALUE)
1528                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1529                 if (pkt.dts != AV_NOPTS_VALUE)
1530                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1531                 if (pkt.duration > 0)
1532                     pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1533                 pkt_size = pkt.size;
1534                 write_frame(os, &pkt, ost);
1535                 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
1536                     do_video_stats(ost, pkt_size);
1537                 }
1538             }
1539
1540             if (stop_encoding)
1541                 break;
1542         }
1543     }
1544 }
1545
1546 /*
1547  * Check whether a packet from ist should be written into ost at this time
1548  */
1549 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1550 {
1551     OutputFile *of = output_files[ost->file_index];
1552     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1553
1554     if (ost->source_index != ist_index)
1555         return 0;
1556
1557     if (ost->finished)
1558         return 0;
1559
1560     if (of->start_time != AV_NOPTS_VALUE && ist->pts < of->start_time)
1561         return 0;
1562
1563     return 1;
1564 }
1565
1566 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1567 {
1568     OutputFile *of = output_files[ost->file_index];
1569     InputFile   *f = input_files [ist->file_index];
1570     int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1571     int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1572     int64_t ist_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ist->st->time_base);
1573     AVPicture pict;
1574     AVPacket opkt;
1575
1576     av_init_packet(&opkt);
1577
1578     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1579         !ost->copy_initial_nonkeyframes)
1580         return;
1581
1582     if (pkt->pts == AV_NOPTS_VALUE) {
1583         if (!ost->frame_number && ist->pts < start_time &&
1584             !ost->copy_prior_start)
1585             return;
1586     } else {
1587         if (!ost->frame_number && pkt->pts < ist_tb_start_time &&
1588             !ost->copy_prior_start)
1589             return;
1590     }
1591
1592     if (of->recording_time != INT64_MAX &&
1593         ist->pts >= of->recording_time + start_time) {
1594         close_output_stream(ost);
1595         return;
1596     }
1597
1598     if (f->recording_time != INT64_MAX) {
1599         start_time = f->ctx->start_time;
1600         if (f->start_time != AV_NOPTS_VALUE)
1601             start_time += f->start_time;
1602         if (ist->pts >= f->recording_time + start_time) {
1603             close_output_stream(ost);
1604             return;
1605         }
1606     }
1607
1608     /* force the input stream PTS */
1609     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
1610         ost->sync_opts++;
1611
1612     if (pkt->pts != AV_NOPTS_VALUE)
1613         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1614     else
1615         opkt.pts = AV_NOPTS_VALUE;
1616
1617     if (pkt->dts == AV_NOPTS_VALUE)
1618         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1619     else
1620         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1621     opkt.dts -= ost_tb_start_time;
1622
1623     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1624         int duration = av_get_audio_frame_duration(ist->st->codec, pkt->size);
1625         if(!duration)
1626             duration = ist->st->codec->frame_size;
1627         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1628                                                (AVRational){1, ist->st->codec->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
1629                                                ost->st->time_base) - ost_tb_start_time;
1630     }
1631
1632     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1633     opkt.flags    = pkt->flags;
1634
1635     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1636     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1637        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1638        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1639        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1640        ) {
1641         if (av_parser_change(ost->parser, ost->st->codec,
1642                              &opkt.data, &opkt.size,
1643                              pkt->data, pkt->size,
1644                              pkt->flags & AV_PKT_FLAG_KEY)) {
1645             opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1646             if (!opkt.buf)
1647                 exit_program(1);
1648         }
1649     } else {
1650         opkt.data = pkt->data;
1651         opkt.size = pkt->size;
1652     }
1653     av_copy_packet_side_data(&opkt, pkt);
1654
1655     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1656         /* store AVPicture in AVPacket, as expected by the output format */
1657         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1658         opkt.data = (uint8_t *)&pict;
1659         opkt.size = sizeof(AVPicture);
1660         opkt.flags |= AV_PKT_FLAG_KEY;
1661     }
1662
1663     write_frame(of->ctx, &opkt, ost);
1664     ost->st->codec->frame_number++;
1665 }
1666
1667 int guess_input_channel_layout(InputStream *ist)
1668 {
1669     AVCodecContext *dec = ist->st->codec;
1670
1671     if (!dec->channel_layout) {
1672         char layout_name[256];
1673
1674         if (dec->channels > ist->guess_layout_max)
1675             return 0;
1676         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1677         if (!dec->channel_layout)
1678             return 0;
1679         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1680                                      dec->channels, dec->channel_layout);
1681         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1682                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1683     }
1684     return 1;
1685 }
1686
1687 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1688 {
1689     AVFrame *decoded_frame, *f;
1690     AVCodecContext *avctx = ist->st->codec;
1691     int i, ret, err = 0, resample_changed;
1692     AVRational decoded_frame_tb;
1693
1694     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1695         return AVERROR(ENOMEM);
1696     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1697         return AVERROR(ENOMEM);
1698     decoded_frame = ist->decoded_frame;
1699
1700     update_benchmark(NULL);
1701     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1702     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1703
1704     if (ret >= 0 && avctx->sample_rate <= 0) {
1705         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1706         ret = AVERROR_INVALIDDATA;
1707     }
1708
1709     if (*got_output || ret<0 || pkt->size)
1710         decode_error_stat[ret<0] ++;
1711
1712     if (!*got_output || ret < 0) {
1713         if (!pkt->size) {
1714             for (i = 0; i < ist->nb_filters; i++)
1715 #if 1
1716                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1717 #else
1718                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1719 #endif
1720         }
1721         return ret;
1722     }
1723
1724     ist->samples_decoded += decoded_frame->nb_samples;
1725     ist->frames_decoded++;
1726
1727 #if 1
1728     /* increment next_dts to use for the case where the input stream does not
1729        have timestamps or there are multiple frames in the packet */
1730     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1731                      avctx->sample_rate;
1732     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1733                      avctx->sample_rate;
1734 #endif
1735
1736     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1737                        ist->resample_channels       != avctx->channels               ||
1738                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1739                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1740     if (resample_changed) {
1741         char layout1[64], layout2[64];
1742
1743         if (!guess_input_channel_layout(ist)) {
1744             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1745                    "layout for Input Stream #%d.%d\n", ist->file_index,
1746                    ist->st->index);
1747             exit_program(1);
1748         }
1749         decoded_frame->channel_layout = avctx->channel_layout;
1750
1751         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1752                                      ist->resample_channel_layout);
1753         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1754                                      decoded_frame->channel_layout);
1755
1756         av_log(NULL, AV_LOG_INFO,
1757                "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",
1758                ist->file_index, ist->st->index,
1759                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1760                ist->resample_channels, layout1,
1761                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1762                avctx->channels, layout2);
1763
1764         ist->resample_sample_fmt     = decoded_frame->format;
1765         ist->resample_sample_rate    = decoded_frame->sample_rate;
1766         ist->resample_channel_layout = decoded_frame->channel_layout;
1767         ist->resample_channels       = avctx->channels;
1768
1769         for (i = 0; i < nb_filtergraphs; i++)
1770             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1771                 FilterGraph *fg = filtergraphs[i];
1772                 int j;
1773                 if (configure_filtergraph(fg) < 0) {
1774                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1775                     exit_program(1);
1776                 }
1777                 for (j = 0; j < fg->nb_outputs; j++) {
1778                     OutputStream *ost = fg->outputs[j]->ost;
1779                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1780                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1781                         av_buffersink_set_frame_size(ost->filter->filter,
1782                                                      ost->st->codec->frame_size);
1783                 }
1784             }
1785     }
1786
1787     /* if the decoder provides a pts, use it instead of the last packet pts.
1788        the decoder could be delaying output by a packet or more. */
1789     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1790         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1791         decoded_frame_tb   = avctx->time_base;
1792     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1793         decoded_frame->pts = decoded_frame->pkt_pts;
1794         decoded_frame_tb   = ist->st->time_base;
1795     } else if (pkt->pts != AV_NOPTS_VALUE) {
1796         decoded_frame->pts = pkt->pts;
1797         decoded_frame_tb   = ist->st->time_base;
1798     }else {
1799         decoded_frame->pts = ist->dts;
1800         decoded_frame_tb   = AV_TIME_BASE_Q;
1801     }
1802     pkt->pts           = AV_NOPTS_VALUE;
1803     if (decoded_frame->pts != AV_NOPTS_VALUE)
1804         decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
1805                                               (AVRational){1, ist->st->codec->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
1806                                               (AVRational){1, ist->st->codec->sample_rate});
1807     for (i = 0; i < ist->nb_filters; i++) {
1808         if (i < ist->nb_filters - 1) {
1809             f = ist->filter_frame;
1810             err = av_frame_ref(f, decoded_frame);
1811             if (err < 0)
1812                 break;
1813         } else
1814             f = decoded_frame;
1815         err = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f,
1816                                      AV_BUFFERSRC_FLAG_PUSH);
1817         if (err == AVERROR_EOF)
1818             err = 0; /* ignore */
1819         if (err < 0)
1820             break;
1821     }
1822     decoded_frame->pts = AV_NOPTS_VALUE;
1823
1824     av_frame_unref(ist->filter_frame);
1825     av_frame_unref(decoded_frame);
1826     return err < 0 ? err : ret;
1827 }
1828
1829 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1830 {
1831     AVFrame *decoded_frame, *f;
1832     int i, ret = 0, err = 0, resample_changed;
1833     int64_t best_effort_timestamp;
1834     AVRational *frame_sample_aspect;
1835
1836     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1837         return AVERROR(ENOMEM);
1838     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1839         return AVERROR(ENOMEM);
1840     decoded_frame = ist->decoded_frame;
1841     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1842
1843     update_benchmark(NULL);
1844     ret = avcodec_decode_video2(ist->st->codec,
1845                                 decoded_frame, got_output, pkt);
1846     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1847
1848     if (*got_output || ret<0 || pkt->size)
1849         decode_error_stat[ret<0] ++;
1850
1851     if (!*got_output || ret < 0) {
1852         if (!pkt->size) {
1853             for (i = 0; i < ist->nb_filters; i++)
1854 #if 1
1855                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1856 #else
1857                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1858 #endif
1859         }
1860         return ret;
1861     }
1862
1863     if(ist->top_field_first>=0)
1864         decoded_frame->top_field_first = ist->top_field_first;
1865
1866     ist->frames_decoded++;
1867
1868     if (ist->hwaccel_retrieve_data && decoded_frame->format == ist->hwaccel_pix_fmt) {
1869         err = ist->hwaccel_retrieve_data(ist->st->codec, decoded_frame);
1870         if (err < 0)
1871             goto fail;
1872     }
1873     ist->hwaccel_retrieved_pix_fmt = decoded_frame->format;
1874
1875     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1876     if(best_effort_timestamp != AV_NOPTS_VALUE)
1877         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1878
1879     if (debug_ts) {
1880         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1881                "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d time_base:%d/%d\n",
1882                ist->st->index, av_ts2str(decoded_frame->pts),
1883                av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1884                best_effort_timestamp,
1885                av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1886                decoded_frame->key_frame, decoded_frame->pict_type,
1887                ist->st->time_base.num, ist->st->time_base.den);
1888     }
1889
1890     pkt->size = 0;
1891
1892     if (ist->st->sample_aspect_ratio.num)
1893         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1894
1895     resample_changed = ist->resample_width   != decoded_frame->width  ||
1896                        ist->resample_height  != decoded_frame->height ||
1897                        ist->resample_pix_fmt != decoded_frame->format;
1898     if (resample_changed) {
1899         av_log(NULL, AV_LOG_INFO,
1900                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1901                ist->file_index, ist->st->index,
1902                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1903                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1904
1905         ist->resample_width   = decoded_frame->width;
1906         ist->resample_height  = decoded_frame->height;
1907         ist->resample_pix_fmt = decoded_frame->format;
1908
1909         for (i = 0; i < nb_filtergraphs; i++) {
1910             if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
1911                 configure_filtergraph(filtergraphs[i]) < 0) {
1912                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1913                 exit_program(1);
1914             }
1915         }
1916     }
1917
1918     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1919     for (i = 0; i < ist->nb_filters; i++) {
1920         if (!frame_sample_aspect->num)
1921             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1922
1923         if (i < ist->nb_filters - 1) {
1924             f = ist->filter_frame;
1925             err = av_frame_ref(f, decoded_frame);
1926             if (err < 0)
1927                 break;
1928         } else
1929             f = decoded_frame;
1930         ret = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f, AV_BUFFERSRC_FLAG_PUSH);
1931         if (ret == AVERROR_EOF) {
1932             ret = 0; /* ignore */
1933         } else if (ret < 0) {
1934             av_log(NULL, AV_LOG_FATAL,
1935                    "Failed to inject frame into filter network: %s\n", av_err2str(ret));
1936             exit_program(1);
1937         }
1938     }
1939
1940 fail:
1941     av_frame_unref(ist->filter_frame);
1942     av_frame_unref(decoded_frame);
1943     return err < 0 ? err : ret;
1944 }
1945
1946 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1947 {
1948     AVSubtitle subtitle;
1949     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1950                                           &subtitle, got_output, pkt);
1951
1952     if (*got_output || ret<0 || pkt->size)
1953         decode_error_stat[ret<0] ++;
1954
1955     if (ret < 0 || !*got_output) {
1956         if (!pkt->size)
1957             sub2video_flush(ist);
1958         return ret;
1959     }
1960
1961     if (ist->fix_sub_duration) {
1962         int end = 1;
1963         if (ist->prev_sub.got_output) {
1964             end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1965                              1000, AV_TIME_BASE);
1966             if (end < ist->prev_sub.subtitle.end_display_time) {
1967                 av_log(ist->st->codec, AV_LOG_DEBUG,
1968                        "Subtitle duration reduced from %d to %d%s\n",
1969                        ist->prev_sub.subtitle.end_display_time, end,
1970                        end <= 0 ? ", dropping it" : "");
1971                 ist->prev_sub.subtitle.end_display_time = end;
1972             }
1973         }
1974         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1975         FFSWAP(int,        ret,         ist->prev_sub.ret);
1976         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1977         if (end <= 0)
1978             goto out;
1979     }
1980
1981     if (!*got_output)
1982         return ret;
1983
1984     sub2video_update(ist, &subtitle);
1985
1986     if (!subtitle.num_rects)
1987         goto out;
1988
1989     ist->frames_decoded++;
1990
1991     for (i = 0; i < nb_output_streams; i++) {
1992         OutputStream *ost = output_streams[i];
1993
1994         if (!check_output_constraints(ist, ost) || !ost->encoding_needed
1995             || ost->enc->type != AVMEDIA_TYPE_SUBTITLE)
1996             continue;
1997
1998         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
1999     }
2000
2001 out:
2002     avsubtitle_free(&subtitle);
2003     return ret;
2004 }
2005
2006 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2007 static int output_packet(InputStream *ist, const AVPacket *pkt)
2008 {
2009     int ret = 0, i;
2010     int got_output = 0;
2011
2012     AVPacket avpkt;
2013     if (!ist->saw_first_ts) {
2014         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;
2015         ist->pts = 0;
2016         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
2017             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2018             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
2019         }
2020         ist->saw_first_ts = 1;
2021     }
2022
2023     if (ist->next_dts == AV_NOPTS_VALUE)
2024         ist->next_dts = ist->dts;
2025     if (ist->next_pts == AV_NOPTS_VALUE)
2026         ist->next_pts = ist->pts;
2027
2028     if (pkt == NULL) {
2029         /* EOF handling */
2030         av_init_packet(&avpkt);
2031         avpkt.data = NULL;
2032         avpkt.size = 0;
2033         goto handle_eof;
2034     } else {
2035         avpkt = *pkt;
2036     }
2037
2038     if (pkt->dts != AV_NOPTS_VALUE) {
2039         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2040         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2041             ist->next_pts = ist->pts = ist->dts;
2042     }
2043
2044     // while we have more to decode or while the decoder did output something on EOF
2045     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2046         int duration;
2047     handle_eof:
2048
2049         ist->pts = ist->next_pts;
2050         ist->dts = ist->next_dts;
2051
2052         if (avpkt.size && avpkt.size != pkt->size &&
2053             !(ist->dec->capabilities & CODEC_CAP_SUBFRAMES)) {
2054             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2055                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2056             ist->showed_multi_packet_warning = 1;
2057         }
2058
2059         switch (ist->st->codec->codec_type) {
2060         case AVMEDIA_TYPE_AUDIO:
2061             ret = decode_audio    (ist, &avpkt, &got_output);
2062             break;
2063         case AVMEDIA_TYPE_VIDEO:
2064             ret = decode_video    (ist, &avpkt, &got_output);
2065             if (avpkt.duration) {
2066                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
2067             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
2068                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2069                 duration = ((int64_t)AV_TIME_BASE *
2070                                 ist->st->codec->time_base.num * ticks) /
2071                                 ist->st->codec->time_base.den;
2072             } else
2073                 duration = 0;
2074
2075             if(ist->dts != AV_NOPTS_VALUE && duration) {
2076                 ist->next_dts += duration;
2077             }else
2078                 ist->next_dts = AV_NOPTS_VALUE;
2079
2080             if (got_output)
2081                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
2082             break;
2083         case AVMEDIA_TYPE_SUBTITLE:
2084             ret = transcode_subtitles(ist, &avpkt, &got_output);
2085             break;
2086         default:
2087             return -1;
2088         }
2089
2090         if (ret < 0)
2091             return ret;
2092
2093         avpkt.dts=
2094         avpkt.pts= AV_NOPTS_VALUE;
2095
2096         // touch data and size only if not EOF
2097         if (pkt) {
2098             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
2099                 ret = avpkt.size;
2100             avpkt.data += ret;
2101             avpkt.size -= ret;
2102         }
2103         if (!got_output) {
2104             continue;
2105         }
2106     }
2107
2108     /* handle stream copy */
2109     if (!ist->decoding_needed) {
2110         ist->dts = ist->next_dts;
2111         switch (ist->st->codec->codec_type) {
2112         case AVMEDIA_TYPE_AUDIO:
2113             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2114                              ist->st->codec->sample_rate;
2115             break;
2116         case AVMEDIA_TYPE_VIDEO:
2117             if (ist->framerate.num) {
2118                 // TODO: Remove work-around for c99-to-c89 issue 7
2119                 AVRational time_base_q = AV_TIME_BASE_Q;
2120                 int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate));
2121                 ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q);
2122             } else if (pkt->duration) {
2123                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2124             } else if(ist->st->codec->time_base.num != 0) {
2125                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
2126                 ist->next_dts += ((int64_t)AV_TIME_BASE *
2127                                   ist->st->codec->time_base.num * ticks) /
2128                                   ist->st->codec->time_base.den;
2129             }
2130             break;
2131         }
2132         ist->pts = ist->dts;
2133         ist->next_pts = ist->next_dts;
2134     }
2135     for (i = 0; pkt && i < nb_output_streams; i++) {
2136         OutputStream *ost = output_streams[i];
2137
2138         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2139             continue;
2140
2141         do_streamcopy(ist, ost, pkt);
2142     }
2143
2144     return 0;
2145 }
2146
2147 static void print_sdp(void)
2148 {
2149     char sdp[16384];
2150     int i;
2151     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
2152
2153     if (!avc)
2154         exit_program(1);
2155     for (i = 0; i < nb_output_files; i++)
2156         avc[i] = output_files[i]->ctx;
2157
2158     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
2159     printf("SDP:\n%s\n", sdp);
2160     fflush(stdout);
2161     av_freep(&avc);
2162 }
2163
2164 static const HWAccel *get_hwaccel(enum AVPixelFormat pix_fmt)
2165 {
2166     int i;
2167     for (i = 0; hwaccels[i].name; i++)
2168         if (hwaccels[i].pix_fmt == pix_fmt)
2169             return &hwaccels[i];
2170     return NULL;
2171 }
2172
2173 static enum AVPixelFormat get_format(AVCodecContext *s, const enum AVPixelFormat *pix_fmts)
2174 {
2175     InputStream *ist = s->opaque;
2176     const enum AVPixelFormat *p;
2177     int ret;
2178
2179     for (p = pix_fmts; *p != -1; p++) {
2180         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(*p);
2181         const HWAccel *hwaccel;
2182
2183         if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
2184             break;
2185
2186         hwaccel = get_hwaccel(*p);
2187         if (!hwaccel ||
2188             (ist->active_hwaccel_id && ist->active_hwaccel_id != hwaccel->id) ||
2189             (ist->hwaccel_id != HWACCEL_AUTO && ist->hwaccel_id != hwaccel->id))
2190             continue;
2191
2192         ret = hwaccel->init(s);
2193         if (ret < 0) {
2194             if (ist->hwaccel_id == hwaccel->id) {
2195                 av_log(NULL, AV_LOG_FATAL,
2196                        "%s hwaccel requested for input stream #%d:%d, "
2197                        "but cannot be initialized.\n", hwaccel->name,
2198                        ist->file_index, ist->st->index);
2199                 exit_program(1);
2200             }
2201             continue;
2202         }
2203         ist->active_hwaccel_id = hwaccel->id;
2204         ist->hwaccel_pix_fmt   = *p;
2205         break;
2206     }
2207
2208     return *p;
2209 }
2210
2211 static int get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
2212 {
2213     InputStream *ist = s->opaque;
2214
2215     if (ist->hwaccel_get_buffer && frame->format == ist->hwaccel_pix_fmt)
2216         return ist->hwaccel_get_buffer(s, frame, flags);
2217
2218     return avcodec_default_get_buffer2(s, frame, flags);
2219 }
2220
2221 static int init_input_stream(int ist_index, char *error, int error_len)
2222 {
2223     int ret;
2224     InputStream *ist = input_streams[ist_index];
2225
2226     if (ist->decoding_needed) {
2227         AVCodec *codec = ist->dec;
2228         if (!codec) {
2229             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2230                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2231             return AVERROR(EINVAL);
2232         }
2233
2234         ist->st->codec->opaque      = ist;
2235         ist->st->codec->get_format  = get_format;
2236         ist->st->codec->get_buffer2 = get_buffer;
2237         ist->st->codec->thread_safe_callbacks = 1;
2238
2239         av_opt_set_int(ist->st->codec, "refcounted_frames", 1, 0);
2240
2241         if (!av_dict_get(ist->opts, "threads", NULL, 0))
2242             av_dict_set(&ist->opts, "threads", "auto", 0);
2243         if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
2244             if (ret == AVERROR_EXPERIMENTAL)
2245                 abort_codec_experimental(codec, 0);
2246
2247             snprintf(error, error_len,
2248                      "Error while opening decoder for input stream "
2249                      "#%d:%d : %s",
2250                      ist->file_index, ist->st->index, av_err2str(ret));
2251             return ret;
2252         }
2253         assert_avoptions(ist->opts);
2254     }
2255
2256     ist->next_pts = AV_NOPTS_VALUE;
2257     ist->next_dts = AV_NOPTS_VALUE;
2258
2259     return 0;
2260 }
2261
2262 static InputStream *get_input_stream(OutputStream *ost)
2263 {
2264     if (ost->source_index >= 0)
2265         return input_streams[ost->source_index];
2266     return NULL;
2267 }
2268
2269 static int compare_int64(const void *a, const void *b)
2270 {
2271     int64_t va = *(int64_t *)a, vb = *(int64_t *)b;
2272     return va < vb ? -1 : va > vb ? +1 : 0;
2273 }
2274
2275 static void parse_forced_key_frames(char *kf, OutputStream *ost,
2276                                     AVCodecContext *avctx)
2277 {
2278     char *p;
2279     int n = 1, i, size, index = 0;
2280     int64_t t, *pts;
2281
2282     for (p = kf; *p; p++)
2283         if (*p == ',')
2284             n++;
2285     size = n;
2286     pts = av_malloc(sizeof(*pts) * size);
2287     if (!pts) {
2288         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
2289         exit_program(1);
2290     }
2291
2292     p = kf;
2293     for (i = 0; i < n; i++) {
2294         char *next = strchr(p, ',');
2295
2296         if (next)
2297             *next++ = 0;
2298
2299         if (!memcmp(p, "chapters", 8)) {
2300
2301             AVFormatContext *avf = output_files[ost->file_index]->ctx;
2302             int j;
2303
2304             if (avf->nb_chapters > INT_MAX - size ||
2305                 !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
2306                                      sizeof(*pts)))) {
2307                 av_log(NULL, AV_LOG_FATAL,
2308                        "Could not allocate forced key frames array.\n");
2309                 exit_program(1);
2310             }
2311             t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
2312             t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2313
2314             for (j = 0; j < avf->nb_chapters; j++) {
2315                 AVChapter *c = avf->chapters[j];
2316                 av_assert1(index < size);
2317                 pts[index++] = av_rescale_q(c->start, c->time_base,
2318                                             avctx->time_base) + t;
2319             }
2320
2321         } else {
2322
2323             t = parse_time_or_die("force_key_frames", p, 1);
2324             av_assert1(index < size);
2325             pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2326
2327         }
2328
2329         p = next;
2330     }
2331
2332     av_assert0(index == size);
2333     qsort(pts, size, sizeof(*pts), compare_int64);
2334     ost->forced_kf_count = size;
2335     ost->forced_kf_pts   = pts;
2336 }
2337
2338 static void report_new_stream(int input_index, AVPacket *pkt)
2339 {
2340     InputFile *file = input_files[input_index];
2341     AVStream *st = file->ctx->streams[pkt->stream_index];
2342
2343     if (pkt->stream_index < file->nb_streams_warn)
2344         return;
2345     av_log(file->ctx, AV_LOG_WARNING,
2346            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
2347            av_get_media_type_string(st->codec->codec_type),
2348            input_index, pkt->stream_index,
2349            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
2350     file->nb_streams_warn = pkt->stream_index + 1;
2351 }
2352
2353 static int transcode_init(void)
2354 {
2355     int ret = 0, i, j, k;
2356     AVFormatContext *oc;
2357     AVCodecContext *codec;
2358     OutputStream *ost;
2359     InputStream *ist;
2360     char error[1024];
2361     int want_sdp = 1;
2362
2363     for (i = 0; i < nb_filtergraphs; i++) {
2364         FilterGraph *fg = filtergraphs[i];
2365         for (j = 0; j < fg->nb_outputs; j++) {
2366             OutputFilter *ofilter = fg->outputs[j];
2367             if (!ofilter->ost || ofilter->ost->source_index >= 0)
2368                 continue;
2369             if (fg->nb_inputs != 1)
2370                 continue;
2371             for (k = nb_input_streams-1; k >= 0 ; k--)
2372                 if (fg->inputs[0]->ist == input_streams[k])
2373                     break;
2374             ofilter->ost->source_index = k;
2375         }
2376     }
2377
2378     /* init framerate emulation */
2379     for (i = 0; i < nb_input_files; i++) {
2380         InputFile *ifile = input_files[i];
2381         if (ifile->rate_emu)
2382             for (j = 0; j < ifile->nb_streams; j++)
2383                 input_streams[j + ifile->ist_index]->start = av_gettime();
2384     }
2385
2386     /* output stream init */
2387     for (i = 0; i < nb_output_files; i++) {
2388         oc = output_files[i]->ctx;
2389         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2390             av_dump_format(oc, i, oc->filename, 1);
2391             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2392             return AVERROR(EINVAL);
2393         }
2394     }
2395
2396     /* init complex filtergraphs */
2397     for (i = 0; i < nb_filtergraphs; i++)
2398         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2399             return ret;
2400
2401     /* for each output stream, we compute the right encoding parameters */
2402     for (i = 0; i < nb_output_streams; i++) {
2403         AVCodecContext *icodec = NULL;
2404         ost = output_streams[i];
2405         oc  = output_files[ost->file_index]->ctx;
2406         ist = get_input_stream(ost);
2407
2408         if (ost->attachment_filename)
2409             continue;
2410
2411         codec  = ost->st->codec;
2412
2413         if (ist) {
2414             icodec = ist->st->codec;
2415
2416             ost->st->disposition          = ist->st->disposition;
2417             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2418             codec->chroma_sample_location = icodec->chroma_sample_location;
2419         } else {
2420             for (j=0; j<oc->nb_streams; j++) {
2421                 AVStream *st = oc->streams[j];
2422                 if (st != ost->st && st->codec->codec_type == codec->codec_type)
2423                     break;
2424             }
2425             if (j == oc->nb_streams)
2426                 if (codec->codec_type == AVMEDIA_TYPE_AUDIO || codec->codec_type == AVMEDIA_TYPE_VIDEO)
2427                     ost->st->disposition = AV_DISPOSITION_DEFAULT;
2428         }
2429
2430         if (ost->stream_copy) {
2431             AVRational sar;
2432             uint64_t extra_size;
2433
2434             av_assert0(ist && !ost->filter);
2435
2436             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2437
2438             if (extra_size > INT_MAX) {
2439                 return AVERROR(EINVAL);
2440             }
2441
2442             /* if stream_copy is selected, no need to decode or encode */
2443             codec->codec_id   = icodec->codec_id;
2444             codec->codec_type = icodec->codec_type;
2445
2446             if (!codec->codec_tag) {
2447                 unsigned int codec_tag;
2448                 if (!oc->oformat->codec_tag ||
2449                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2450                      !av_codec_get_tag2(oc->oformat->codec_tag, icodec->codec_id, &codec_tag))
2451                     codec->codec_tag = icodec->codec_tag;
2452             }
2453
2454             codec->bit_rate       = icodec->bit_rate;
2455             codec->rc_max_rate    = icodec->rc_max_rate;
2456             codec->rc_buffer_size = icodec->rc_buffer_size;
2457             codec->field_order    = icodec->field_order;
2458             codec->extradata      = av_mallocz(extra_size);
2459             if (!codec->extradata) {
2460                 return AVERROR(ENOMEM);
2461             }
2462             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2463             codec->extradata_size= icodec->extradata_size;
2464             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2465
2466             codec->time_base = ist->st->time_base;
2467             /*
2468              * Avi is a special case here because it supports variable fps but
2469              * having the fps and timebase differe significantly adds quite some
2470              * overhead
2471              */
2472             if(!strcmp(oc->oformat->name, "avi")) {
2473                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2474                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2475                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2476                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2477                      || copy_tb==2){
2478                     codec->time_base.num = ist->st->r_frame_rate.den;
2479                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2480                     codec->ticks_per_frame = 2;
2481                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2482                                  && av_q2d(ist->st->time_base) < 1.0/500
2483                     || copy_tb==0){
2484                     codec->time_base = icodec->time_base;
2485                     codec->time_base.num *= icodec->ticks_per_frame;
2486                     codec->time_base.den *= 2;
2487                     codec->ticks_per_frame = 2;
2488                 }
2489             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2490                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2491                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2492                       && strcmp(oc->oformat->name, "f4v")
2493             ) {
2494                 if(   copy_tb<0 && icodec->time_base.den
2495                                 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2496                                 && av_q2d(ist->st->time_base) < 1.0/500
2497                    || copy_tb==0){
2498                     codec->time_base = icodec->time_base;
2499                     codec->time_base.num *= icodec->ticks_per_frame;
2500                 }
2501             }
2502             if (   codec->codec_tag == AV_RL32("tmcd")
2503                 && icodec->time_base.num < icodec->time_base.den
2504                 && icodec->time_base.num > 0
2505                 && 121LL*icodec->time_base.num > icodec->time_base.den) {
2506                 codec->time_base = icodec->time_base;
2507             }
2508
2509             if (ist && !ost->frame_rate.num)
2510                 ost->frame_rate = ist->framerate;
2511             if(ost->frame_rate.num)
2512                 codec->time_base = av_inv_q(ost->frame_rate);
2513
2514             av_reduce(&codec->time_base.num, &codec->time_base.den,
2515                         codec->time_base.num, codec->time_base.den, INT_MAX);
2516
2517             ost->parser = av_parser_init(codec->codec_id);
2518
2519             switch (codec->codec_type) {
2520             case AVMEDIA_TYPE_AUDIO:
2521                 if (audio_volume != 256) {
2522                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2523                     exit_program(1);
2524                 }
2525                 codec->channel_layout     = icodec->channel_layout;
2526                 codec->sample_rate        = icodec->sample_rate;
2527                 codec->channels           = icodec->channels;
2528                 codec->frame_size         = icodec->frame_size;
2529                 codec->audio_service_type = icodec->audio_service_type;
2530                 codec->block_align        = icodec->block_align;
2531                 codec->delay              = icodec->delay;
2532                 if((codec->block_align == 1 || codec->block_align == 1152 || codec->block_align == 576) && codec->codec_id == AV_CODEC_ID_MP3)
2533                     codec->block_align= 0;
2534                 if(codec->codec_id == AV_CODEC_ID_AC3)
2535                     codec->block_align= 0;
2536                 break;
2537             case AVMEDIA_TYPE_VIDEO:
2538                 codec->pix_fmt            = icodec->pix_fmt;
2539                 codec->width              = icodec->width;
2540                 codec->height             = icodec->height;
2541                 codec->has_b_frames       = icodec->has_b_frames;
2542                 if (ost->frame_aspect_ratio.num) { // overridden by the -aspect cli option
2543                     sar =
2544                         av_mul_q(ost->frame_aspect_ratio,
2545                                  (AVRational){ codec->height, codec->width });
2546                     av_log(NULL, AV_LOG_WARNING, "Overriding aspect ratio "
2547                            "with stream copy may produce invalid files\n");
2548                 }
2549                 else if (ist->st->sample_aspect_ratio.num)
2550                     sar = ist->st->sample_aspect_ratio;
2551                 else
2552                     sar = icodec->sample_aspect_ratio;
2553                 ost->st->sample_aspect_ratio = codec->sample_aspect_ratio = sar;
2554                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2555                 break;
2556             case AVMEDIA_TYPE_SUBTITLE:
2557                 codec->width  = icodec->width;
2558                 codec->height = icodec->height;
2559                 break;
2560             case AVMEDIA_TYPE_DATA:
2561             case AVMEDIA_TYPE_ATTACHMENT:
2562                 break;
2563             default:
2564                 abort();
2565             }
2566         } else {
2567             if (!ost->enc)
2568                 ost->enc = avcodec_find_encoder(codec->codec_id);
2569             if (!ost->enc) {
2570                 /* should only happen when a default codec is not present. */
2571                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2572                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2573                 ret = AVERROR(EINVAL);
2574                 goto dump_format;
2575             }
2576
2577             if (ist)
2578                 ist->decoding_needed++;
2579             ost->encoding_needed = 1;
2580
2581             if (!ost->filter &&
2582                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2583                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2584                     FilterGraph *fg;
2585                     fg = init_simple_filtergraph(ist, ost);
2586                     if (configure_filtergraph(fg)) {
2587                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2588                         exit_program(1);
2589                     }
2590             }
2591
2592             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2593                 if (ost->filter && !ost->frame_rate.num)
2594                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2595                 if (ist && !ost->frame_rate.num)
2596                     ost->frame_rate = ist->framerate;
2597                 if (ist && !ost->frame_rate.num)
2598                     ost->frame_rate = ist->st->r_frame_rate;
2599                 if (ist && !ost->frame_rate.num) {
2600                     ost->frame_rate = (AVRational){25, 1};
2601                     av_log(NULL, AV_LOG_WARNING,
2602                            "No information "
2603                            "about the input framerate is available. Falling "
2604                            "back to a default value of 25fps for output stream #%d:%d. Use the -r option "
2605                            "if you want a different framerate.\n",
2606                            ost->file_index, ost->index);
2607                 }
2608 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2609                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2610                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2611                     ost->frame_rate = ost->enc->supported_framerates[idx];
2612                 }
2613                 if (codec->codec_id == AV_CODEC_ID_MPEG4) {
2614                     av_reduce(&ost->frame_rate.num, &ost->frame_rate.den,
2615                               ost->frame_rate.num, ost->frame_rate.den, 65535);
2616                 }
2617             }
2618
2619             switch (codec->codec_type) {
2620             case AVMEDIA_TYPE_AUDIO:
2621                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2622                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2623                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2624                 codec->channels       = avfilter_link_get_channels(ost->filter->filter->inputs[0]);
2625                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2626                 break;
2627             case AVMEDIA_TYPE_VIDEO:
2628                 codec->time_base = av_inv_q(ost->frame_rate);
2629                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2630                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2631                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2632                    && (video_sync_method == VSYNC_CFR || video_sync_method == VSYNC_VSCFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2633                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2634                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2635                 }
2636                 for (j = 0; j < ost->forced_kf_count; j++)
2637                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2638                                                          AV_TIME_BASE_Q,
2639                                                          codec->time_base);
2640
2641                 codec->width  = ost->filter->filter->inputs[0]->w;
2642                 codec->height = ost->filter->filter->inputs[0]->h;
2643                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2644                     ost->frame_aspect_ratio.num ? // overridden by the -aspect cli option
2645                     av_mul_q(ost->frame_aspect_ratio, (AVRational){ codec->height, codec->width }) :
2646                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2647                 if (!strncmp(ost->enc->name, "libx264", 7) &&
2648                     codec->pix_fmt == AV_PIX_FMT_NONE &&
2649                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2650                     av_log(NULL, AV_LOG_WARNING,
2651                            "No pixel format specified, %s for H.264 encoding chosen.\n"
2652                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2653                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2654                 if (!strncmp(ost->enc->name, "mpeg2video", 10) &&
2655                     codec->pix_fmt == AV_PIX_FMT_NONE &&
2656                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2657                     av_log(NULL, AV_LOG_WARNING,
2658                            "No pixel format specified, %s for MPEG-2 encoding chosen.\n"
2659                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2660                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2661                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2662
2663                 if (!icodec ||
2664                     codec->width   != icodec->width  ||
2665                     codec->height  != icodec->height ||
2666                     codec->pix_fmt != icodec->pix_fmt) {
2667                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2668                 }
2669
2670                 if (ost->forced_keyframes) {
2671                     if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
2672                         ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
2673                                             forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
2674                         if (ret < 0) {
2675                             av_log(NULL, AV_LOG_ERROR,
2676                                    "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
2677                             return ret;
2678                         }
2679                         ost->forced_keyframes_expr_const_values[FKF_N] = 0;
2680                         ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
2681                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
2682                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;
2683                     } else {
2684                         parse_forced_key_frames(ost->forced_keyframes, ost, ost->st->codec);
2685                     }
2686                 }
2687                 break;
2688             case AVMEDIA_TYPE_SUBTITLE:
2689                 codec->time_base = (AVRational){1, 1000};
2690                 if (!codec->width) {
2691                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2692                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2693                 }
2694                 break;
2695             default:
2696                 abort();
2697                 break;
2698             }
2699             /* two pass mode */
2700             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2701                 char logfilename[1024];
2702                 FILE *f;
2703
2704                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2705                          ost->logfile_prefix ? ost->logfile_prefix :
2706                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2707                          i);
2708                 if (!strcmp(ost->enc->name, "libx264")) {
2709                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2710                 } else {
2711                     if (codec->flags & CODEC_FLAG_PASS2) {
2712                         char  *logbuffer;
2713                         size_t logbuffer_size;
2714                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2715                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2716                                    logfilename);
2717                             exit_program(1);
2718                         }
2719                         codec->stats_in = logbuffer;
2720                     }
2721                     if (codec->flags & CODEC_FLAG_PASS1) {
2722                         f = av_fopen_utf8(logfilename, "wb");
2723                         if (!f) {
2724                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2725                                 logfilename, strerror(errno));
2726                             exit_program(1);
2727                         }
2728                         ost->logfile = f;
2729                     }
2730                 }
2731             }
2732         }
2733     }
2734
2735     /* open each encoder */
2736     for (i = 0; i < nb_output_streams; i++) {
2737         ost = output_streams[i];
2738         if (ost->encoding_needed) {
2739             AVCodec      *codec = ost->enc;
2740             AVCodecContext *dec = NULL;
2741
2742             if ((ist = get_input_stream(ost)))
2743                 dec = ist->st->codec;
2744             if (dec && dec->subtitle_header) {
2745                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2746                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2747                 if (!ost->st->codec->subtitle_header) {
2748                     ret = AVERROR(ENOMEM);
2749                     goto dump_format;
2750                 }
2751                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2752                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2753             }
2754             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2755                 av_dict_set(&ost->opts, "threads", "auto", 0);
2756             if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
2757                 if (ret == AVERROR_EXPERIMENTAL)
2758                     abort_codec_experimental(codec, 1);
2759                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2760                         ost->file_index, ost->index);
2761                 goto dump_format;
2762             }
2763             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2764                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2765                 av_buffersink_set_frame_size(ost->filter->filter,
2766                                              ost->st->codec->frame_size);
2767             assert_avoptions(ost->opts);
2768             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2769                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2770                                              " It takes bits/s as argument, not kbits/s\n");
2771         } else {
2772             av_opt_set_dict(ost->st->codec, &ost->opts);
2773         }
2774     }
2775
2776     /* init input streams */
2777     for (i = 0; i < nb_input_streams; i++)
2778         if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
2779             for (i = 0; i < nb_output_streams; i++) {
2780                 ost = output_streams[i];
2781                 avcodec_close(ost->st->codec);
2782             }
2783             goto dump_format;
2784         }
2785
2786     /* discard unused programs */
2787     for (i = 0; i < nb_input_files; i++) {
2788         InputFile *ifile = input_files[i];
2789         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2790             AVProgram *p = ifile->ctx->programs[j];
2791             int discard  = AVDISCARD_ALL;
2792
2793             for (k = 0; k < p->nb_stream_indexes; k++)
2794                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2795                     discard = AVDISCARD_DEFAULT;
2796                     break;
2797                 }
2798             p->discard = discard;
2799         }
2800     }
2801
2802     /* open files and write file headers */
2803     for (i = 0; i < nb_output_files; i++) {
2804         oc = output_files[i]->ctx;
2805         oc->interrupt_callback = int_cb;
2806         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2807             snprintf(error, sizeof(error),
2808                      "Could not write header for output file #%d "
2809                      "(incorrect codec parameters ?): %s",
2810                      i, av_err2str(ret));
2811             ret = AVERROR(EINVAL);
2812             goto dump_format;
2813         }
2814 //         assert_avoptions(output_files[i]->opts);
2815         if (strcmp(oc->oformat->name, "rtp")) {
2816             want_sdp = 0;
2817         }
2818     }
2819
2820  dump_format:
2821     /* dump the file output parameters - cannot be done before in case
2822        of stream copy */
2823     for (i = 0; i < nb_output_files; i++) {
2824         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2825     }
2826
2827     /* dump the stream mapping */
2828     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2829     for (i = 0; i < nb_input_streams; i++) {
2830         ist = input_streams[i];
2831
2832         for (j = 0; j < ist->nb_filters; j++) {
2833             if (ist->filters[j]->graph->graph_desc) {
2834                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2835                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2836                        ist->filters[j]->name);
2837                 if (nb_filtergraphs > 1)
2838                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2839                 av_log(NULL, AV_LOG_INFO, "\n");
2840             }
2841         }
2842     }
2843
2844     for (i = 0; i < nb_output_streams; i++) {
2845         ost = output_streams[i];
2846
2847         if (ost->attachment_filename) {
2848             /* an attached file */
2849             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2850                    ost->attachment_filename, ost->file_index, ost->index);
2851             continue;
2852         }
2853
2854         if (ost->filter && ost->filter->graph->graph_desc) {
2855             /* output from a complex graph */
2856             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2857             if (nb_filtergraphs > 1)
2858                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2859
2860             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2861                    ost->index, ost->enc ? ost->enc->name : "?");
2862             continue;
2863         }
2864
2865         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2866                input_streams[ost->source_index]->file_index,
2867                input_streams[ost->source_index]->st->index,
2868                ost->file_index,
2869                ost->index);
2870         if (ost->sync_ist != input_streams[ost->source_index])
2871             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2872                    ost->sync_ist->file_index,
2873                    ost->sync_ist->st->index);
2874         if (ost->stream_copy)
2875             av_log(NULL, AV_LOG_INFO, " (copy)");
2876         else
2877             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2878                    input_streams[ost->source_index]->dec->name : "?",
2879                    ost->enc ? ost->enc->name : "?");
2880         av_log(NULL, AV_LOG_INFO, "\n");
2881     }
2882
2883     if (ret) {
2884         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2885         return ret;
2886     }
2887
2888     if (want_sdp) {
2889         print_sdp();
2890     }
2891
2892     transcode_init_done = 1;
2893
2894     return 0;
2895 }
2896
2897 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2898 static int need_output(void)
2899 {
2900     int i;
2901
2902     for (i = 0; i < nb_output_streams; i++) {
2903         OutputStream *ost    = output_streams[i];
2904         OutputFile *of       = output_files[ost->file_index];
2905         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2906
2907         if (ost->finished ||
2908             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2909             continue;
2910         if (ost->frame_number >= ost->max_frames) {
2911             int j;
2912             for (j = 0; j < of->ctx->nb_streams; j++)
2913                 close_output_stream(output_streams[of->ost_index + j]);
2914             continue;
2915         }
2916
2917         return 1;
2918     }
2919
2920     return 0;
2921 }
2922
2923 /**
2924  * Select the output stream to process.
2925  *
2926  * @return  selected output stream, or NULL if none available
2927  */
2928 static OutputStream *choose_output(void)
2929 {
2930     int i;
2931     int64_t opts_min = INT64_MAX;
2932     OutputStream *ost_min = NULL;
2933
2934     for (i = 0; i < nb_output_streams; i++) {
2935         OutputStream *ost = output_streams[i];
2936         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2937                                     AV_TIME_BASE_Q);
2938         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2939             opts_min = opts;
2940             ost_min  = ost;
2941         }
2942     }
2943     return ost_min;
2944 }
2945
2946 static int check_keyboard_interaction(int64_t cur_time)
2947 {
2948     int i, ret, key;
2949     static int64_t last_time;
2950     if (received_nb_signals)
2951         return AVERROR_EXIT;
2952     /* read_key() returns 0 on EOF */
2953     if(cur_time - last_time >= 100000 && !run_as_daemon){
2954         key =  read_key();
2955         last_time = cur_time;
2956     }else
2957         key = -1;
2958     if (key == 'q')
2959         return AVERROR_EXIT;
2960     if (key == '+') av_log_set_level(av_log_get_level()+10);
2961     if (key == '-') av_log_set_level(av_log_get_level()-10);
2962     if (key == 's') qp_hist     ^= 1;
2963     if (key == 'h'){
2964         if (do_hex_dump){
2965             do_hex_dump = do_pkt_dump = 0;
2966         } else if(do_pkt_dump){
2967             do_hex_dump = 1;
2968         } else
2969             do_pkt_dump = 1;
2970         av_log_set_level(AV_LOG_DEBUG);
2971     }
2972     if (key == 'c' || key == 'C'){
2973         char buf[4096], target[64], command[256], arg[256] = {0};
2974         double time;
2975         int k, n = 0;
2976         fprintf(stderr, "\nEnter command: <target>|all <time>|-1 <command>[ <argument>]\n");
2977         i = 0;
2978         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2979             if (k > 0)
2980                 buf[i++] = k;
2981         buf[i] = 0;
2982         if (k > 0 &&
2983             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2984             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2985                    target, time, command, arg);
2986             for (i = 0; i < nb_filtergraphs; i++) {
2987                 FilterGraph *fg = filtergraphs[i];
2988                 if (fg->graph) {
2989                     if (time < 0) {
2990                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2991                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2992                         fprintf(stderr, "Command reply for stream %d: ret:%d res:\n%s", i, ret, buf);
2993                     } else if (key == 'c') {
2994                         fprintf(stderr, "Queing commands only on filters supporting the specific command is unsupported\n");
2995                         ret = AVERROR_PATCHWELCOME;
2996                     } else {
2997                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2998                     }
2999                 }
3000             }
3001         } else {
3002             av_log(NULL, AV_LOG_ERROR,
3003                    "Parse error, at least 3 arguments were expected, "
3004                    "only %d given in string '%s'\n", n, buf);
3005         }
3006     }
3007     if (key == 'd' || key == 'D'){
3008         int debug=0;
3009         if(key == 'D') {
3010             debug = input_streams[0]->st->codec->debug<<1;
3011             if(!debug) debug = 1;
3012             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
3013                 debug += debug;
3014         }else
3015             if(scanf("%d", &debug)!=1)
3016                 fprintf(stderr,"error parsing debug value\n");
3017         for(i=0;i<nb_input_streams;i++) {
3018             input_streams[i]->st->codec->debug = debug;
3019         }
3020         for(i=0;i<nb_output_streams;i++) {
3021             OutputStream *ost = output_streams[i];
3022             ost->st->codec->debug = debug;
3023         }
3024         if(debug) av_log_set_level(AV_LOG_DEBUG);
3025         fprintf(stderr,"debug=%d\n", debug);
3026     }
3027     if (key == '?'){
3028         fprintf(stderr, "key    function\n"
3029                         "?      show this help\n"
3030                         "+      increase verbosity\n"
3031                         "-      decrease verbosity\n"
3032                         "c      Send command to first matching filter supporting it\n"
3033                         "C      Send/Que command to all matching filters\n"
3034                         "D      cycle through available debug modes\n"
3035                         "h      dump packets/hex press to cycle through the 3 states\n"
3036                         "q      quit\n"
3037                         "s      Show QP histogram\n"
3038         );
3039     }
3040     return 0;
3041 }
3042
3043 #if HAVE_PTHREADS
3044 static void *input_thread(void *arg)
3045 {
3046     InputFile *f = arg;
3047     int ret = 0;
3048
3049     while (!transcoding_finished && ret >= 0) {
3050         AVPacket pkt;
3051         ret = av_read_frame(f->ctx, &pkt);
3052
3053         if (ret == AVERROR(EAGAIN)) {
3054             av_usleep(10000);
3055             ret = 0;
3056             continue;
3057         } else if (ret < 0)
3058             break;
3059
3060         pthread_mutex_lock(&f->fifo_lock);
3061         while (!av_fifo_space(f->fifo))
3062             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
3063
3064         av_dup_packet(&pkt);
3065         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
3066         pthread_cond_signal(&f->fifo_cond);
3067
3068         pthread_mutex_unlock(&f->fifo_lock);
3069     }
3070
3071     pthread_mutex_lock(&f->fifo_lock);
3072     f->finished = 1;
3073     pthread_cond_signal(&f->fifo_cond);
3074     pthread_mutex_unlock(&f->fifo_lock);
3075     return NULL;
3076 }
3077
3078 static void free_input_threads(void)
3079 {
3080     int i;
3081
3082     if (nb_input_files == 1)
3083         return;
3084
3085     transcoding_finished = 1;
3086
3087     for (i = 0; i < nb_input_files; i++) {
3088         InputFile *f = input_files[i];
3089         AVPacket pkt;
3090
3091         if (!f->fifo || f->joined)
3092             continue;
3093
3094         pthread_mutex_lock(&f->fifo_lock);
3095         while (av_fifo_size(f->fifo)) {
3096             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
3097             av_free_packet(&pkt);
3098         }
3099         pthread_cond_signal(&f->fifo_cond);
3100         pthread_mutex_unlock(&f->fifo_lock);
3101
3102         pthread_join(f->thread, NULL);
3103         f->joined = 1;
3104
3105         while (av_fifo_size(f->fifo)) {
3106             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
3107             av_free_packet(&pkt);
3108         }
3109         av_fifo_free(f->fifo);
3110     }
3111 }
3112
3113 static int init_input_threads(void)
3114 {
3115     int i, ret;
3116
3117     if (nb_input_files == 1)
3118         return 0;
3119
3120     for (i = 0; i < nb_input_files; i++) {
3121         InputFile *f = input_files[i];
3122
3123         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
3124             return AVERROR(ENOMEM);
3125
3126         if (f->ctx->pb ? !f->ctx->pb->seekable :
3127             strcmp(f->ctx->iformat->name, "lavfi"))
3128             f->non_blocking = 1;
3129
3130         pthread_mutex_init(&f->fifo_lock, NULL);
3131         pthread_cond_init (&f->fifo_cond, NULL);
3132
3133         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
3134             return AVERROR(ret);
3135     }
3136     return 0;
3137 }
3138
3139 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
3140 {
3141     int ret = 0;
3142
3143     pthread_mutex_lock(&f->fifo_lock);
3144
3145     while (1) {
3146     if (av_fifo_size(f->fifo)) {
3147         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
3148         pthread_cond_signal(&f->fifo_cond);
3149         break;
3150     } else {
3151         if (f->finished) {
3152             ret = AVERROR_EOF;
3153             break;
3154         }
3155         if (f->non_blocking) {
3156             ret = AVERROR(EAGAIN);
3157             break;
3158         }
3159         pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
3160     }
3161     }
3162
3163     pthread_mutex_unlock(&f->fifo_lock);
3164
3165     return ret;
3166 }
3167 #endif
3168
3169 static int get_input_packet(InputFile *f, AVPacket *pkt)
3170 {
3171     if (f->rate_emu) {
3172         int i;
3173         for (i = 0; i < f->nb_streams; i++) {
3174             InputStream *ist = input_streams[f->ist_index + i];
3175             int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
3176             int64_t now = av_gettime() - ist->start;
3177             if (pts > now)
3178                 return AVERROR(EAGAIN);
3179         }
3180     }
3181
3182 #if HAVE_PTHREADS
3183     if (nb_input_files > 1)
3184         return get_input_packet_mt(f, pkt);
3185 #endif
3186     return av_read_frame(f->ctx, pkt);
3187 }
3188
3189 static int got_eagain(void)
3190 {
3191     int i;
3192     for (i = 0; i < nb_output_streams; i++)
3193         if (output_streams[i]->unavailable)
3194             return 1;
3195     return 0;
3196 }
3197
3198 static void reset_eagain(void)
3199 {
3200     int i;
3201     for (i = 0; i < nb_input_files; i++)
3202         input_files[i]->eagain = 0;
3203     for (i = 0; i < nb_output_streams; i++)
3204         output_streams[i]->unavailable = 0;
3205 }
3206
3207 /*
3208  * Return
3209  * - 0 -- one packet was read and processed
3210  * - AVERROR(EAGAIN) -- no packets were available for selected file,
3211  *   this function should be called again
3212  * - AVERROR_EOF -- this function should not be called again
3213  */
3214 static int process_input(int file_index)
3215 {
3216     InputFile *ifile = input_files[file_index];
3217     AVFormatContext *is;
3218     InputStream *ist;
3219     AVPacket pkt;
3220     int ret, i, j;
3221
3222     is  = ifile->ctx;
3223     ret = get_input_packet(ifile, &pkt);
3224
3225     if (ret == AVERROR(EAGAIN)) {
3226         ifile->eagain = 1;
3227         return ret;
3228     }
3229     if (ret < 0) {
3230         if (ret != AVERROR_EOF) {
3231             print_error(is->filename, ret);
3232             if (exit_on_error)
3233                 exit_program(1);
3234         }
3235         ifile->eof_reached = 1;
3236
3237         for (i = 0; i < ifile->nb_streams; i++) {
3238             ist = input_streams[ifile->ist_index + i];
3239             if (ist->decoding_needed)
3240                 output_packet(ist, NULL);
3241
3242             /* mark all outputs that don't go through lavfi as finished */
3243             for (j = 0; j < nb_output_streams; j++) {
3244                 OutputStream *ost = output_streams[j];
3245
3246                 if (ost->source_index == ifile->ist_index + i &&
3247                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
3248                     close_output_stream(ost);
3249             }
3250         }
3251
3252         return AVERROR(EAGAIN);
3253     }
3254
3255     reset_eagain();
3256
3257     if (do_pkt_dump) {
3258         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
3259                          is->streams[pkt.stream_index]);
3260     }
3261     /* the following test is needed in case new streams appear
3262        dynamically in stream : we ignore them */
3263     if (pkt.stream_index >= ifile->nb_streams) {
3264         report_new_stream(file_index, &pkt);
3265         goto discard_packet;
3266     }
3267
3268     ist = input_streams[ifile->ist_index + pkt.stream_index];
3269
3270     ist->data_size += pkt.size;
3271     ist->nb_packets++;
3272
3273     if (ist->discard)
3274         goto discard_packet;
3275
3276     if (debug_ts) {
3277         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
3278                "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",
3279                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
3280                av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
3281                av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
3282                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3283                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3284                av_ts2str(input_files[ist->file_index]->ts_offset),
3285                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3286     }
3287
3288     if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
3289         int64_t stime, stime2;
3290         // Correcting starttime based on the enabled streams
3291         // 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.
3292         //       so we instead do it here as part of discontinuity handling
3293         if (   ist->next_dts == AV_NOPTS_VALUE
3294             && ifile->ts_offset == -is->start_time
3295             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
3296             int64_t new_start_time = INT64_MAX;
3297             for (i=0; i<is->nb_streams; i++) {
3298                 AVStream *st = is->streams[i];
3299                 if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
3300                     continue;
3301                 new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
3302             }
3303             if (new_start_time > is->start_time) {
3304                 av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
3305                 ifile->ts_offset = -new_start_time;
3306             }
3307         }
3308
3309         stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
3310         stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
3311         ist->wrap_correction_done = 1;
3312
3313         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
3314             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
3315             ist->wrap_correction_done = 0;
3316         }
3317         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
3318             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
3319             ist->wrap_correction_done = 0;
3320         }
3321     }
3322
3323     /* add the stream-global side data to the first packet */
3324     if (ist->nb_packets == 1)
3325         if (ist->st->nb_side_data)
3326             av_packet_split_side_data(&pkt);
3327         for (i = 0; i < ist->st->nb_side_data; i++) {
3328             AVPacketSideData *src_sd = &ist->st->side_data[i];
3329             uint8_t *dst_data;
3330
3331             if (av_packet_get_side_data(&pkt, src_sd->type, NULL))
3332                 continue;
3333
3334             dst_data = av_packet_new_side_data(&pkt, src_sd->type, src_sd->size);
3335             if (!dst_data)
3336                 exit_program(1);
3337
3338             memcpy(dst_data, src_sd->data, src_sd->size);
3339         }
3340
3341     if (pkt.dts != AV_NOPTS_VALUE)
3342         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3343     if (pkt.pts != AV_NOPTS_VALUE)
3344         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3345
3346     if (pkt.pts != AV_NOPTS_VALUE)
3347         pkt.pts *= ist->ts_scale;
3348     if (pkt.dts != AV_NOPTS_VALUE)
3349         pkt.dts *= ist->ts_scale;
3350
3351     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts == AV_NOPTS_VALUE && !copy_ts
3352         && (is->iformat->flags & AVFMT_TS_DISCONT) && ifile->last_ts != AV_NOPTS_VALUE) {
3353         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3354         int64_t delta   = pkt_dts - ifile->last_ts;
3355         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3356             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3357                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)){
3358             ifile->ts_offset -= delta;
3359             av_log(NULL, AV_LOG_DEBUG,
3360                    "Inter stream timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3361                    delta, ifile->ts_offset);
3362             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3363             if (pkt.pts != AV_NOPTS_VALUE)
3364                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3365         }
3366     }
3367
3368     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
3369         !copy_ts) {
3370         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3371         int64_t delta   = pkt_dts - ist->next_dts;
3372         if (is->iformat->flags & AVFMT_TS_DISCONT) {
3373             if (delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3374                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3375                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3376                 pkt_dts + AV_TIME_BASE/10 < FFMAX(ist->pts, ist->dts)) {
3377                 ifile->ts_offset -= delta;
3378                 av_log(NULL, AV_LOG_DEBUG,
3379                        "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3380                        delta, ifile->ts_offset);
3381                 pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3382                 if (pkt.pts != AV_NOPTS_VALUE)
3383                     pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3384             }
3385         } else {
3386             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3387                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)) {
3388                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3389                 pkt.dts = AV_NOPTS_VALUE;
3390             }
3391             if (pkt.pts != AV_NOPTS_VALUE){
3392                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3393                 delta   = pkt_pts - ist->next_dts;
3394                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3395                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)) {
3396                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3397                     pkt.pts = AV_NOPTS_VALUE;
3398                 }
3399             }
3400         }
3401     }
3402
3403     if (pkt.dts != AV_NOPTS_VALUE)
3404         ifile->last_ts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3405
3406     if (debug_ts) {
3407         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",
3408                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
3409                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3410                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3411                av_ts2str(input_files[ist->file_index]->ts_offset),
3412                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3413     }
3414
3415     sub2video_heartbeat(ist, pkt.pts);
3416
3417     ret = output_packet(ist, &pkt);
3418     if (ret < 0) {
3419         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
3420                ist->file_index, ist->st->index, av_err2str(ret));
3421         if (exit_on_error)
3422             exit_program(1);
3423     }
3424
3425 discard_packet:
3426     av_free_packet(&pkt);
3427
3428     return 0;
3429 }
3430
3431 /**
3432  * Perform a step of transcoding for the specified filter graph.
3433  *
3434  * @param[in]  graph     filter graph to consider
3435  * @param[out] best_ist  input stream where a frame would allow to continue
3436  * @return  0 for success, <0 for error
3437  */
3438 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
3439 {
3440     int i, ret;
3441     int nb_requests, nb_requests_max = 0;
3442     InputFilter *ifilter;
3443     InputStream *ist;
3444
3445     *best_ist = NULL;
3446     ret = avfilter_graph_request_oldest(graph->graph);
3447     if (ret >= 0)
3448         return reap_filters();
3449
3450     if (ret == AVERROR_EOF) {
3451         ret = reap_filters();
3452         for (i = 0; i < graph->nb_outputs; i++)
3453             close_output_stream(graph->outputs[i]->ost);
3454         return ret;
3455     }
3456     if (ret != AVERROR(EAGAIN))
3457         return ret;
3458
3459     for (i = 0; i < graph->nb_inputs; i++) {
3460         ifilter = graph->inputs[i];
3461         ist = ifilter->ist;
3462         if (input_files[ist->file_index]->eagain ||
3463             input_files[ist->file_index]->eof_reached)
3464             continue;
3465         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
3466         if (nb_requests > nb_requests_max) {
3467             nb_requests_max = nb_requests;
3468             *best_ist = ist;
3469         }
3470     }
3471
3472     if (!*best_ist)
3473         for (i = 0; i < graph->nb_outputs; i++)
3474             graph->outputs[i]->ost->unavailable = 1;
3475
3476     return 0;
3477 }
3478
3479 /**
3480  * Run a single step of transcoding.
3481  *
3482  * @return  0 for success, <0 for error
3483  */
3484 static int transcode_step(void)
3485 {
3486     OutputStream *ost;
3487     InputStream  *ist;
3488     int ret;
3489
3490     ost = choose_output();
3491     if (!ost) {
3492         if (got_eagain()) {
3493             reset_eagain();
3494             av_usleep(10000);
3495             return 0;
3496         }
3497         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
3498         return AVERROR_EOF;
3499     }
3500
3501     if (ost->filter) {
3502         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
3503             return ret;
3504         if (!ist)
3505             return 0;
3506     } else {
3507         av_assert0(ost->source_index >= 0);
3508         ist = input_streams[ost->source_index];
3509     }
3510
3511     ret = process_input(ist->file_index);
3512     if (ret == AVERROR(EAGAIN)) {
3513         if (input_files[ist->file_index]->eagain)
3514             ost->unavailable = 1;
3515         return 0;
3516     }
3517     if (ret < 0)
3518         return ret == AVERROR_EOF ? 0 : ret;
3519
3520     return reap_filters();
3521 }
3522
3523 /*
3524  * The following code is the main loop of the file converter
3525  */
3526 static int transcode(void)
3527 {
3528     int ret, i;
3529     AVFormatContext *os;
3530     OutputStream *ost;
3531     InputStream *ist;
3532     int64_t timer_start;
3533
3534     ret = transcode_init();
3535     if (ret < 0)
3536         goto fail;
3537
3538     if (stdin_interaction) {
3539         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3540     }
3541
3542     timer_start = av_gettime();
3543
3544 #if HAVE_PTHREADS
3545     if ((ret = init_input_threads()) < 0)
3546         goto fail;
3547 #endif
3548
3549     while (!received_sigterm) {
3550         int64_t cur_time= av_gettime();
3551
3552         /* if 'q' pressed, exits */
3553         if (stdin_interaction)
3554             if (check_keyboard_interaction(cur_time) < 0)
3555                 break;
3556
3557         /* check if there's any stream where output is still needed */
3558         if (!need_output()) {
3559             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3560             break;
3561         }
3562
3563         ret = transcode_step();
3564         if (ret < 0) {
3565             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
3566                 continue;
3567
3568             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
3569             break;
3570         }
3571
3572         /* dump report by using the output first video and audio streams */
3573         print_report(0, timer_start, cur_time);
3574     }
3575 #if HAVE_PTHREADS
3576     free_input_threads();
3577 #endif
3578
3579     /* at the end of stream, we must flush the decoder buffers */
3580     for (i = 0; i < nb_input_streams; i++) {
3581         ist = input_streams[i];
3582         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3583             output_packet(ist, NULL);
3584         }
3585     }
3586     flush_encoders();
3587
3588     term_exit();
3589
3590     /* write the trailer if needed and close file */
3591     for (i = 0; i < nb_output_files; i++) {
3592         os = output_files[i]->ctx;
3593         av_write_trailer(os);
3594     }
3595
3596     /* dump report by using the first video and audio streams */
3597     print_report(1, timer_start, av_gettime());
3598
3599     /* close each encoder */
3600     for (i = 0; i < nb_output_streams; i++) {
3601         ost = output_streams[i];
3602         if (ost->encoding_needed) {
3603             av_freep(&ost->st->codec->stats_in);
3604             avcodec_close(ost->st->codec);
3605         }
3606     }
3607
3608     /* close each decoder */
3609     for (i = 0; i < nb_input_streams; i++) {
3610         ist = input_streams[i];
3611         if (ist->decoding_needed) {
3612             avcodec_close(ist->st->codec);
3613             if (ist->hwaccel_uninit)
3614                 ist->hwaccel_uninit(ist->st->codec);
3615         }
3616     }
3617
3618     /* finished ! */
3619     ret = 0;
3620
3621  fail:
3622 #if HAVE_PTHREADS
3623     free_input_threads();
3624 #endif
3625
3626     if (output_streams) {
3627         for (i = 0; i < nb_output_streams; i++) {
3628             ost = output_streams[i];
3629             if (ost) {
3630                 if (ost->stream_copy)
3631                     av_freep(&ost->st->codec->extradata);
3632                 if (ost->logfile) {
3633                     fclose(ost->logfile);
3634                     ost->logfile = NULL;
3635                 }
3636                 av_freep(&ost->st->codec->subtitle_header);
3637                 av_freep(&ost->forced_kf_pts);
3638                 av_freep(&ost->apad);
3639                 av_dict_free(&ost->opts);
3640                 av_dict_free(&ost->swr_opts);
3641                 av_dict_free(&ost->resample_opts);
3642             }
3643         }
3644     }
3645     return ret;
3646 }
3647
3648
3649 static int64_t getutime(void)
3650 {
3651 #if HAVE_GETRUSAGE
3652     struct rusage rusage;
3653
3654     getrusage(RUSAGE_SELF, &rusage);
3655     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3656 #elif HAVE_GETPROCESSTIMES
3657     HANDLE proc;
3658     FILETIME c, e, k, u;
3659     proc = GetCurrentProcess();
3660     GetProcessTimes(proc, &c, &e, &k, &u);
3661     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3662 #else
3663     return av_gettime();
3664 #endif
3665 }
3666
3667 static int64_t getmaxrss(void)
3668 {
3669 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3670     struct rusage rusage;
3671     getrusage(RUSAGE_SELF, &rusage);
3672     return (int64_t)rusage.ru_maxrss * 1024;
3673 #elif HAVE_GETPROCESSMEMORYINFO
3674     HANDLE proc;
3675     PROCESS_MEMORY_COUNTERS memcounters;
3676     proc = GetCurrentProcess();
3677     memcounters.cb = sizeof(memcounters);
3678     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3679     return memcounters.PeakPagefileUsage;
3680 #else
3681     return 0;
3682 #endif
3683 }
3684
3685 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3686 {
3687 }
3688
3689 int main(int argc, char **argv)
3690 {
3691     int ret;
3692     int64_t ti;
3693
3694     register_exit(ffmpeg_cleanup);
3695
3696     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3697
3698     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3699     parse_loglevel(argc, argv, options);
3700
3701     if(argc>1 && !strcmp(argv[1], "-d")){
3702         run_as_daemon=1;
3703         av_log_set_callback(log_callback_null);
3704         argc--;
3705         argv++;
3706     }
3707
3708     avcodec_register_all();
3709 #if CONFIG_AVDEVICE
3710     avdevice_register_all();
3711 #endif
3712     avfilter_register_all();
3713     av_register_all();
3714     avformat_network_init();
3715
3716     show_banner(argc, argv, options);
3717
3718     term_init();
3719
3720     /* parse options and open all input/output files */
3721     ret = ffmpeg_parse_options(argc, argv);
3722     if (ret < 0)
3723         exit_program(1);
3724
3725     if (nb_output_files <= 0 && nb_input_files == 0) {
3726         show_usage();
3727         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3728         exit_program(1);
3729     }
3730
3731     /* file converter / grab */
3732     if (nb_output_files <= 0) {
3733         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3734         exit_program(1);
3735     }
3736
3737 //     if (nb_input_files == 0) {
3738 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3739 //         exit_program(1);
3740 //     }
3741
3742     current_time = ti = getutime();
3743     if (transcode() < 0)
3744         exit_program(1);
3745     ti = getutime() - ti;
3746     if (do_benchmark) {
3747         printf("bench: utime=%0.3fs\n", ti / 1000000.0);
3748     }
3749     av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" frames successfully decoded, %"PRIu64" decoding errors\n",
3750            decode_error_stat[0], decode_error_stat[1]);
3751     if ((decode_error_stat[0] + decode_error_stat[1]) * max_error_rate < decode_error_stat[1])
3752         exit_program(69);
3753
3754     exit_program(received_nb_signals ? 255 : main_return_code);
3755     return main_return_code;
3756 }