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 int main_return_code = 0;
 320
 321 static void
 322 sigterm_handler(int sig)
 323 {
 324     received_sigterm = sig;
 325     received_nb_signals++;
 326     term_exit_sigsafe();
 327     if(received_nb_signals > 3)
 328         exit(123);
 329 }
 330
 331 void term_init(void)
 332 {
 333 #if HAVE_TERMIOS_H
 334     if(!run_as_daemon){
 335         struct termios tty;
 336         int istty = 1;
 337 #if HAVE_ISATTY
 338         istty = isatty(0) && isatty(2);
 339 #endif
 340         if (istty && tcgetattr (0, &tty) == 0) {
 341             oldtty = tty;
 342             restore_tty = 1;
 343
 344             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
 345                              |INLCR|IGNCR|ICRNL|IXON);
 346             tty.c_oflag |= OPOST;
 347             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
 348             tty.c_cflag &= ~(CSIZE|PARENB);
 349             tty.c_cflag |= CS8;
 350             tty.c_cc[VMIN] = 1;
 351             tty.c_cc[VTIME] = 0;
 352
 353             tcsetattr (0, TCSANOW, &tty);
 354         }
 355         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
 356     }
 357 #endif
 358     avformat_network_deinit();
 359
 360     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
 361     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
 362 #ifdef SIGXCPU
 363     signal(SIGXCPU, sigterm_handler);
 364 #endif
 365 }
 366
 367 /* read a key without blocking */
 368 static int read_key(void)
 369 {
 370     unsigned char ch;
 371 #if HAVE_TERMIOS_H
 372     int n = 1;
 373     struct timeval tv;
 374     fd_set rfds;
 375
 376     FD_ZERO(&rfds);
 377     FD_SET(0, &rfds);
 378     tv.tv_sec = 0;
 379     tv.tv_usec = 0;
 380     n = select(1, &rfds, NULL, NULL, &tv);
 381     if (n > 0) {
 382         n = read(0, &ch, 1);
 383         if (n == 1)
 384             return ch;
 385
 386         return n;
 387     }
 388 #elif HAVE_KBHIT
 389 #    if HAVE_PEEKNAMEDPIPE
 390     static int is_pipe;
 391     static HANDLE input_handle;
 392     DWORD dw, nchars;
 393     if(!input_handle){
 394         input_handle = GetStdHandle(STD_INPUT_HANDLE);
 395         is_pipe = !GetConsoleMode(input_handle, &dw);
 396     }
 397
 398     if (stdin->_cnt > 0) {
 399         read(0, &ch, 1);
 400         return ch;
 401     }
 402     if (is_pipe) {
 403         /* When running under a GUI, you will end here. */
 404         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
 405             // input pipe may have been closed by the program that ran ffmpeg
 406             return -1;
 407         }
 408         //Read it
 409         if(nchars != 0) {
 410             read(0, &ch, 1);
 411             return ch;
 412         }else{
 413             return -1;
 414         }
 415     }
 416 #    endif
 417     if(kbhit())
 418         return(getch());
 419 #endif
 420     return -1;
 421 }
 422
 423 static int decode_interrupt_cb(void *ctx)
 424 {
 425     return received_nb_signals > 1;
 426 }
 427
 428 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
 429
 430 static void ffmpeg_cleanup(int ret)
 431 {
 432     int i, j;
 433
 434     if (do_benchmark) {
 435         int maxrss = getmaxrss() / 1024;
 436         printf("bench: maxrss=%ikB\n", maxrss);
 437     }
 438
 439     for (i = 0; i < nb_filtergraphs; i++) {
 440         avfilter_graph_free(&filtergraphs[i]->graph);
 441         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
 442             av_freep(&filtergraphs[i]->inputs[j]->name);
 443             av_freep(&filtergraphs[i]->inputs[j]);
 444         }
 445         av_freep(&filtergraphs[i]->inputs);
 446         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
 447             av_freep(&filtergraphs[i]->outputs[j]->name);
 448             av_freep(&filtergraphs[i]->outputs[j]);
 449         }
 450         av_freep(&filtergraphs[i]->outputs);
 451         av_freep(&filtergraphs[i]->graph_desc);
 452         av_freep(&filtergraphs[i]);
 453     }
 454     av_freep(&filtergraphs);
 455
 456     av_freep(&subtitle_out);
 457
 458     /* close files */
 459     for (i = 0; i < nb_output_files; i++) {
 460         AVFormatContext *s = output_files[i]->ctx;
 461         if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE) && s->pb)
 462             avio_close(s->pb);
 463         avformat_free_context(s);
 464         av_dict_free(&output_files[i]->opts);
 465         av_freep(&output_files[i]);
 466     }
 467     for (i = 0; i < nb_output_streams; i++) {
 468         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
 469         while (bsfc) {
 470             AVBitStreamFilterContext *next = bsfc->next;
 471             av_bitstream_filter_close(bsfc);
 472             bsfc = next;
 473         }
 474         output_streams[i]->bitstream_filters = NULL;
 475         av_frame_free(&output_streams[i]->filtered_frame);
 476
 477         av_parser_close(output_streams[i]->parser);
 478
 479         av_freep(&output_streams[i]->forced_keyframes);
 480         av_expr_free(output_streams[i]->forced_keyframes_pexpr);
 481         av_freep(&output_streams[i]->avfilter);
 482         av_freep(&output_streams[i]->logfile_prefix);
 483         av_freep(&output_streams[i]);
 484     }
 485 #if HAVE_PTHREADS
 486     free_input_threads();
 487 #endif
 488     for (i = 0; i < nb_input_files; i++) {
 489         avformat_close_input(&input_files[i]->ctx);
 490         av_freep(&input_files[i]);
 491     }
 492     for (i = 0; i < nb_input_streams; i++) {
 493         av_frame_free(&input_streams[i]->decoded_frame);
 494         av_frame_free(&input_streams[i]->filter_frame);
 495         av_dict_free(&input_streams[i]->opts);
 496         avsubtitle_free(&input_streams[i]->prev_sub.subtitle);
 497         av_frame_free(&input_streams[i]->sub2video.frame);
 498         av_freep(&input_streams[i]->filters);
 499         av_freep(&input_streams[i]->hwaccel_device);
 500         av_freep(&input_streams[i]);
 501     }
 502
 503     if (vstats_file)
 504         fclose(vstats_file);
 505     av_free(vstats_filename);
 506
 507     av_freep(&input_streams);
 508     av_freep(&input_files);
 509     av_freep(&output_streams);
 510     av_freep(&output_files);
 511
 512     uninit_opts();
 513
 514     avformat_network_deinit();
 515
 516     if (received_sigterm) {
 517         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
 518                (int) received_sigterm);
 519     }
 520     term_exit();
 521 }
 522
 523 void assert_avoptions(AVDictionary *m)
 524 {
 525     AVDictionaryEntry *t;
 526     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
 527         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
 528         exit_program(1);
 529     }
 530 }
 531
 532 static void abort_codec_experimental(AVCodec *c, int encoder)
 533 {
 534     exit_program(1);
 535 }
 536
 537 static void update_benchmark(const char *fmt, ...)
 538 {
 539     if (do_benchmark_all) {
 540         int64_t t = getutime();
 541         va_list va;
 542         char buf[1024];
 543
 544         if (fmt) {
 545             va_start(va, fmt);
 546             vsnprintf(buf, sizeof(buf), fmt, va);
 547             va_end(va);
 548             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
 549         }
 550         current_time = t;
 551     }
 552 }
 553
 554 static void close_all_output_streams(OutputStream *ost, OSTFinished this_stream, OSTFinished others)
 555 {
 556     int i;
 557     for (i = 0; i < nb_output_streams; i++) {
 558         OutputStream *ost2 = output_streams[i];
 559         ost2->finished |= ost == ost2 ? this_stream : others;
 560     }
 561 }
 562
 563 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
 564 {
 565     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
 566     AVCodecContext          *avctx = ost->st->codec;
 567     int ret;
 568
 569     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
 570         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
 571         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
 572
 573     /*
 574      * Audio encoders may split the packets --  #frames in != #packets out.
 575      * But there is no reordering, so we can limit the number of output packets
 576      * by simply dropping them here.
 577      * Counting encoded video frames needs to be done separately because of
 578      * reordering, see do_video_out()
 579      */
 580     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
 581         if (ost->frame_number >= ost->max_frames) {
 582             av_free_packet(pkt);
 583             return;
 584         }
 585         ost->frame_number++;
 586     }
 587
 588     while (bsfc) {
 589         AVPacket new_pkt = *pkt;
 590         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
 591                                            &new_pkt.data, &new_pkt.size,
 592                                            pkt->data, pkt->size,
 593                                            pkt->flags & AV_PKT_FLAG_KEY);
 594         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
 595             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
 596             if(t) {
 597                 memcpy(t, new_pkt.data, new_pkt.size);
 598                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
 599                 new_pkt.data = t;
 600                 new_pkt.buf = NULL;
 601                 a = 1;
 602             } else
 603                 a = AVERROR(ENOMEM);
 604         }
 605         if (a > 0) {
 606             av_free_packet(pkt);
 607             new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
 608                                            av_buffer_default_free, NULL, 0);
 609             if (!new_pkt.buf)
 610                 exit_program(1);
 611         } else if (a < 0) {
 612             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
 613                    bsfc->filter->name, pkt->stream_index,
 614                    avctx->codec ? avctx->codec->name : "copy");
 615             print_error("", a);
 616             if (exit_on_error)
 617                 exit_program(1);
 618         }
 619         *pkt = new_pkt;
 620
 621         bsfc = bsfc->next;
 622     }
 623
 624     if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS) &&
 625         (avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) &&
 626         pkt->dts != AV_NOPTS_VALUE &&
 627         ost->last_mux_dts != AV_NOPTS_VALUE) {
 628       int64_t max = ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
 629       if (pkt->dts < max) {
 630         int loglevel = max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG;
 631         av_log(s, loglevel, "Non-monotonous DTS in output stream "
 632                "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
 633                ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
 634         if (exit_on_error) {
 635             av_log(NULL, AV_LOG_FATAL, "aborting.\n");
 636             exit_program(1);
 637         }
 638         av_log(s, loglevel, "changing to %"PRId64". This may result "
 639                "in incorrect timestamps in the output file.\n",
 640                max);
 641         if(pkt->pts >= pkt->dts)
 642             pkt->pts = FFMAX(pkt->pts, max);
 643         pkt->dts = max;
 644       }
 645     }
 646     ost->last_mux_dts = pkt->dts;
 647
 648     ost->data_size += pkt->size;
 649     ost->packets_written++;
 650
 651     pkt->stream_index = ost->index;
 652
 653     if (debug_ts) {
 654         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
 655                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
 656                 av_get_media_type_string(ost->st->codec->codec_type),
 657                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
 658                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
 659                 pkt->size
 660               );
 661     }
 662
 663     ret = av_interleaved_write_frame(s, pkt);
 664     if (ret < 0) {
 665         print_error("av_interleaved_write_frame()", ret);
 666         main_return_code = 1;
 667         close_all_output_streams(ost, MUXER_FINISHED | ENCODER_FINISHED, ENCODER_FINISHED);
 668     }
 669     av_free_packet(pkt);
 670 }
 671
 672 static void close_output_stream(OutputStream *ost)
 673 {
 674     OutputFile *of = output_files[ost->file_index];
 675
 676     ost->finished |= ENCODER_FINISHED;
 677     if (of->shortest) {
 678         int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, AV_TIME_BASE_Q);
 679         of->recording_time = FFMIN(of->recording_time, end);
 680     }
 681 }
 682
 683 static int check_recording_time(OutputStream *ost)
 684 {
 685     OutputFile *of = output_files[ost->file_index];
 686
 687     if (of->recording_time != INT64_MAX &&
 688         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
 689                       AV_TIME_BASE_Q) >= 0) {
 690         close_output_stream(ost);
 691         return 0;
 692     }
 693     return 1;
 694 }
 695
 696 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
 697                          AVFrame *frame)
 698 {
 699     AVCodecContext *enc = ost->st->codec;
 700     AVPacket pkt;
 701     int got_packet = 0;
 702
 703     av_init_packet(&pkt);
 704     pkt.data = NULL;
 705     pkt.size = 0;
 706
 707     if (!check_recording_time(ost))
 708         return;
 709
 710     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
 711         frame->pts = ost->sync_opts;
 712     ost->sync_opts = frame->pts + frame->nb_samples;
 713     ost->samples_encoded += frame->nb_samples;
 714     ost->frames_encoded++;
 715
 716     av_assert0(pkt.size || !pkt.data);
 717     update_benchmark(NULL);
 718     if (debug_ts) {
 719         av_log(NULL, AV_LOG_INFO, "encoder <- type:audio "
 720                "frame_pts:%s frame_pts_time:%s time_base:%d/%d\n",
 721                av_ts2str(frame->pts), av_ts2timestr(frame->pts, &enc->time_base),
 722                enc->time_base.num, enc->time_base.den);
 723     }
 724
 725     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
 726         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
 727         exit_program(1);
 728     }
 729     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
 730
 731     if (got_packet) {
 732         if (pkt.pts != AV_NOPTS_VALUE)
 733             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
 734         if (pkt.dts != AV_NOPTS_VALUE)
 735             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
 736         if (pkt.duration > 0)
 737             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
 738
 739         if (debug_ts) {
 740             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
 741                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
 742                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
 743                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
 744         }
 745
 746         write_frame(s, &pkt, ost);
 747     }
 748 }
 749
 750 static void do_subtitle_out(AVFormatContext *s,
 751                             OutputStream *ost,
 752                             InputStream *ist,
 753                             AVSubtitle *sub)
 754 {
 755     int subtitle_out_max_size = 1024 * 1024;
 756     int subtitle_out_size, nb, i;
 757     AVCodecContext *enc;
 758     AVPacket pkt;
 759     int64_t pts;
 760
 761     if (sub->pts == AV_NOPTS_VALUE) {
 762         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
 763         if (exit_on_error)
 764             exit_program(1);
 765         return;
 766     }
 767
 768     enc = ost->st->codec;
 769
 770     if (!subtitle_out) {
 771         subtitle_out = av_malloc(subtitle_out_max_size);
 772     }
 773
 774     /* Note: DVB subtitle need one packet to draw them and one other
 775        packet to clear them */
 776     /* XXX: signal it in the codec context ? */
 777     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
 778         nb = 2;
 779     else
 780         nb = 1;
 781
 782     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
 783     pts = sub->pts;
 784     if (output_files[ost->file_index]->start_time != AV_NOPTS_VALUE)
 785         pts -= output_files[ost->file_index]->start_time;
 786     for (i = 0; i < nb; i++) {
 787         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
 788         if (!check_recording_time(ost))
 789             return;
 790
 791         sub->pts = pts;
 792         // start_display_time is required to be 0
 793         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
 794         sub->end_display_time  -= sub->start_display_time;
 795         sub->start_display_time = 0;
 796         if (i == 1)
 797             sub->num_rects = 0;
 798
 799         ost->frames_encoded++;
 800
 801         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
 802                                                     subtitle_out_max_size, sub);
 803         if (subtitle_out_size < 0) {
 804             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
 805             exit_program(1);
 806         }
 807
 808         av_init_packet(&pkt);
 809         pkt.data = subtitle_out;
 810         pkt.size = subtitle_out_size;
 811         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
 812         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
 813         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
 814             /* XXX: the pts correction is handled here. Maybe handling
 815                it in the codec would be better */
 816             if (i == 0)
 817                 pkt.pts += 90 * sub->start_display_time;
 818             else
 819                 pkt.pts += 90 * sub->end_display_time;
 820         }
 821         write_frame(s, &pkt, ost);
 822     }
 823 }
 824
 825 static void do_video_out(AVFormatContext *s,
 826                          OutputStream *ost,
 827                          AVFrame *in_picture)
 828 {
 829     int ret, format_video_sync;
 830     AVPacket pkt;
 831     AVCodecContext *enc = ost->st->codec;
 832     int nb_frames, i;
 833     double sync_ipts, delta;
 834     double duration = 0;
 835     int frame_size = 0;
 836     InputStream *ist = NULL;
 837
 838     if (ost->source_index >= 0)
 839         ist = input_streams[ost->source_index];
 840
 841     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
 842         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
 843
 844     sync_ipts = in_picture->pts;
 845     delta = sync_ipts - ost->sync_opts + duration;
 846
 847     /* by default, we output a single frame */
 848     nb_frames = 1;
 849
 850     format_video_sync = video_sync_method;
 851     if (format_video_sync == VSYNC_AUTO) {
 852         if(!strcmp(s->oformat->name, "avi")) {
 853             format_video_sync = VSYNC_VFR;
 854         } else
 855             format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
 856         if (   ist
 857             && format_video_sync == VSYNC_CFR
 858             && input_files[ist->file_index]->ctx->nb_streams == 1
 859             && input_files[ist->file_index]->input_ts_offset == 0) {
 860             format_video_sync = VSYNC_VSCFR;
 861         }
 862         if (format_video_sync == VSYNC_CFR && copy_ts) {
 863             format_video_sync = VSYNC_VSCFR;
 864         }
 865     }
 866
 867     switch (format_video_sync) {
 868     case VSYNC_VSCFR:
 869         if (ost->frame_number == 0 && delta - duration >= 0.5) {
 870             av_log(NULL, AV_LOG_DEBUG, "Not duplicating %d initial frames\n", (int)lrintf(delta - duration));
 871             delta = duration;
 872             ost->sync_opts = lrint(sync_ipts);
 873         }
 874     case VSYNC_CFR:
 875         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
 876         if (delta < -1.1)
 877             nb_frames = 0;
 878         else if (delta > 1.1)
 879             nb_frames = lrintf(delta);
 880         break;
 881     case VSYNC_VFR:
 882         if (delta <= -0.6)
 883             nb_frames = 0;
 884         else if (delta > 0.6)
 885             ost->sync_opts = lrint(sync_ipts);
 886         break;
 887     case VSYNC_DROP:
 888     case VSYNC_PASSTHROUGH:
 889         ost->sync_opts = lrint(sync_ipts);
 890         break;
 891     default:
 892         av_assert0(0);
 893     }
 894
 895     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
 896     if (nb_frames == 0) {
 897         nb_frames_drop++;
 898         av_log(NULL, AV_LOG_WARNING,
 899                "*** dropping frame %d from stream %d at ts %"PRId64"\n",
 900                ost->frame_number, ost->st->index, in_picture->pts);
 901         return;
 902     } else if (nb_frames > 1) {
 903         if (nb_frames > dts_error_threshold * 30) {
 904             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
 905             nb_frames_drop++;
 906             return;
 907         }
 908         nb_frames_dup += nb_frames - 1;
 909         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
 910     }
 911
 912   /* duplicates frame if needed */
 913   for (i = 0; i < nb_frames; i++) {
 914     av_init_packet(&pkt);
 915     pkt.data = NULL;
 916     pkt.size = 0;
 917
 918     in_picture->pts = ost->sync_opts;
 919
 920 #if 1
 921     if (!check_recording_time(ost))
 922 #else
 923     if (ost->frame_number >= ost->max_frames)
 924 #endif
 925         return;
 926
 927     if (s->oformat->flags & AVFMT_RAWPICTURE &&
 928         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
 929         /* raw pictures are written as AVPicture structure to
 930            avoid any copies. We support temporarily the older
 931            method. */
 932         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
 933         enc->coded_frame->top_field_first  = in_picture->top_field_first;
 934         if (enc->coded_frame->interlaced_frame)
 935             enc->field_order = enc->coded_frame->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
 936         else
 937             enc->field_order = AV_FIELD_PROGRESSIVE;
 938         pkt.data   = (uint8_t *)in_picture;
 939         pkt.size   =  sizeof(AVPicture);
 940         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
 941         pkt.flags |= AV_PKT_FLAG_KEY;
 942
 943         write_frame(s, &pkt, ost);
 944     } else {
 945         int got_packet, forced_keyframe = 0;
 946         double pts_time;
 947
 948         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME) &&
 949             ost->top_field_first >= 0)
 950             in_picture->top_field_first = !!ost->top_field_first;
 951
 952         if (in_picture->interlaced_frame) {
 953             if (enc->codec->id == AV_CODEC_ID_MJPEG)
 954                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
 955             else
 956                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
 957         } else
 958             enc->field_order = AV_FIELD_PROGRESSIVE;
 959
 960         in_picture->quality = ost->st->codec->global_quality;
 961         if (!enc->me_threshold)
 962             in_picture->pict_type = 0;
 963
 964         pts_time = in_picture->pts != AV_NOPTS_VALUE ?
 965             in_picture->pts * av_q2d(enc->time_base) : NAN;
 966         if (ost->forced_kf_index < ost->forced_kf_count &&
 967             in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
 968             ost->forced_kf_index++;
 969             forced_keyframe = 1;
 970         } else if (ost->forced_keyframes_pexpr) {
 971             double res;
 972             ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
 973             res = av_expr_eval(ost->forced_keyframes_pexpr,
 974                                ost->forced_keyframes_expr_const_values, NULL);
 975             av_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
 976                     ost->forced_keyframes_expr_const_values[FKF_N],
 977                     ost->forced_keyframes_expr_const_values[FKF_N_FORCED],
 978                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N],
 979                     ost->forced_keyframes_expr_const_values[FKF_T],
 980                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T],
 981                     res);
 982             if (res) {
 983                 forced_keyframe = 1;
 984                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] =
 985                     ost->forced_keyframes_expr_const_values[FKF_N];
 986                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] =
 987                     ost->forced_keyframes_expr_const_values[FKF_T];
 988                 ost->forced_keyframes_expr_const_values[FKF_N_FORCED] += 1;
 989             }
 990
 991             ost->forced_keyframes_expr_const_values[FKF_N] += 1;
 992         }
 993
 994         if (forced_keyframe) {
 995             in_picture->pict_type = AV_PICTURE_TYPE_I;
 996             av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
 997         }
 998
 999         update_benchmark(NULL);
1000         if (debug_ts) {
1001             av_log(NULL, AV_LOG_INFO, "encoder <- type:video "
1002                    "frame_pts:%s frame_pts_time:%s time_base:%d/%d\n",
1003                    av_ts2str(in_picture->pts), av_ts2timestr(in_picture->pts, &enc->time_base),
1004                    enc->time_base.num, enc->time_base.den);
1005         }
1006
1007         ost->frames_encoded++;
1008
1009         ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
1010         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
1011         if (ret < 0) {
1012             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1013             exit_program(1);
1014         }
1015
1016         if (got_packet) {
1017             if (debug_ts) {
1018                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1019                        "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1020                        av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &enc->time_base),
1021                        av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &enc->time_base));
1022             }
1023
1024             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
1025                 pkt.pts = ost->sync_opts;
1026
1027             if (pkt.pts != AV_NOPTS_VALUE)
1028                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1029             if (pkt.dts != AV_NOPTS_VALUE)
1030                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1031
1032             if (debug_ts) {
1033                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1034                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1035                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1036                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1037             }
1038
1039             frame_size = pkt.size;
1040             write_frame(s, &pkt, ost);
1041
1042             /* if two pass, output log */
1043             if (ost->logfile && enc->stats_out) {
1044                 fprintf(ost->logfile, "%s", enc->stats_out);
1045             }
1046         }
1047     }
1048     ost->sync_opts++;
1049     /*
1050      * For video, number of frames in == number of packets out.
1051      * But there may be reordering, so we can't throw away frames on encoder
1052      * flush, we need to limit them here, before they go into encoder.
1053      */
1054     ost->frame_number++;
1055
1056     if (vstats_filename && frame_size)
1057         do_video_stats(ost, frame_size);
1058   }
1059 }
1060
1061 static double psnr(double d)
1062 {
1063     return -10.0 * log(d) / log(10.0);
1064 }
1065
1066 static void do_video_stats(OutputStream *ost, int frame_size)
1067 {
1068     AVCodecContext *enc;
1069     int frame_number;
1070     double ti1, bitrate, avg_bitrate;
1071
1072     /* this is executed just the first time do_video_stats is called */
1073     if (!vstats_file) {
1074         vstats_file = fopen(vstats_filename, "w");
1075         if (!vstats_file) {
1076             perror("fopen");
1077             exit_program(1);
1078         }
1079     }
1080
1081     enc = ost->st->codec;
1082     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1083         frame_number = ost->st->nb_frames;
1084         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1085         if (enc->flags&CODEC_FLAG_PSNR)
1086             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1087
1088         fprintf(vstats_file,"f_size= %6d ", frame_size);
1089         /* compute pts value */
1090         ti1 = ost->st->pts.val * av_q2d(enc->time_base);
1091         if (ti1 < 0.01)
1092             ti1 = 0.01;
1093
1094         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1095         avg_bitrate = (double)(ost->data_size * 8) / ti1 / 1000.0;
1096         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1097                (double)ost->data_size / 1024, ti1, bitrate, avg_bitrate);
1098         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1099     }
1100 }
1101
1102 /**
1103  * Get and encode new output from any of the filtergraphs, without causing
1104  * activity.
1105  *
1106  * @return  0 for success, <0 for severe errors
1107  */
1108 static int reap_filters(void)
1109 {
1110     AVFrame *filtered_frame = NULL;
1111     int i;
1112     int64_t frame_pts;
1113
1114     /* Reap all buffers present in the buffer sinks */
1115     for (i = 0; i < nb_output_streams; i++) {
1116         OutputStream *ost = output_streams[i];
1117         OutputFile    *of = output_files[ost->file_index];
1118         AVFilterContext *filter;
1119         AVCodecContext *enc = ost->st->codec;
1120         int ret = 0;
1121
1122         if (!ost->filter)
1123             continue;
1124         filter = ost->filter->filter;
1125
1126         if (!ost->filtered_frame && !(ost->filtered_frame = av_frame_alloc())) {
1127             return AVERROR(ENOMEM);
1128         }
1129         filtered_frame = ost->filtered_frame;
1130
1131         while (1) {
1132             ret = av_buffersink_get_frame_flags(filter, filtered_frame,
1133                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1134             if (ret < 0) {
1135                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1136                     av_log(NULL, AV_LOG_WARNING,
1137                            "Error in av_buffersink_get_frame_flags(): %s\n", av_err2str(ret));
1138                 }
1139                 break;
1140             }
1141             if (ost->finished) {
1142                 av_frame_unref(filtered_frame);
1143                 continue;
1144             }
1145             frame_pts = AV_NOPTS_VALUE;
1146             if (filtered_frame->pts != AV_NOPTS_VALUE) {
1147                 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1148                 filtered_frame->pts = frame_pts =
1149                     av_rescale_q(filtered_frame->pts, filter->inputs[0]->time_base, enc->time_base) -
1150                     av_rescale_q(start_time, AV_TIME_BASE_Q, enc->time_base);
1151             }
1152             //if (ost->source_index >= 0)
1153             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1154
1155             switch (filter->inputs[0]->type) {
1156             case AVMEDIA_TYPE_VIDEO:
1157                 filtered_frame->pts = frame_pts;
1158                 if (!ost->frame_aspect_ratio.num)
1159                     enc->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
1160
1161                 if (debug_ts) {
1162                     av_log(NULL, AV_LOG_INFO, "filter -> pts:%s pts_time:%s time_base:%d/%d\n",
1163                             av_ts2str(filtered_frame->pts), av_ts2timestr(filtered_frame->pts, &enc->time_base),
1164                             enc->time_base.num, enc->time_base.den);
1165                 }
1166
1167                 do_video_out(of->ctx, ost, filtered_frame);
1168                 break;
1169             case AVMEDIA_TYPE_AUDIO:
1170                 filtered_frame->pts = frame_pts;
1171                 if (!(enc->codec->capabilities & CODEC_CAP_PARAM_CHANGE) &&
1172                     enc->channels != av_frame_get_channels(filtered_frame)) {
1173                     av_log(NULL, AV_LOG_ERROR,
1174                            "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
1175                     break;
1176                 }
1177                 do_audio_out(of->ctx, ost, filtered_frame);
1178                 break;
1179             default:
1180                 // TODO support subtitle filters
1181                 av_assert0(0);
1182             }
1183
1184             av_frame_unref(filtered_frame);
1185         }
1186     }
1187
1188     return 0;
1189 }
1190
1191 static void print_final_stats(int64_t total_size)
1192 {
1193     uint64_t video_size = 0, audio_size = 0, extra_size = 0, other_size = 0;
1194     uint64_t subtitle_size = 0;
1195     uint64_t data_size = 0;
1196     float percent = -1.0;
1197     int i, j;
1198
1199     for (i = 0; i < nb_output_streams; i++) {
1200         OutputStream *ost = output_streams[i];
1201         switch (ost->st->codec->codec_type) {
1202             case AVMEDIA_TYPE_VIDEO: video_size += ost->data_size; break;
1203             case AVMEDIA_TYPE_AUDIO: audio_size += ost->data_size; break;
1204             case AVMEDIA_TYPE_SUBTITLE: subtitle_size += ost->data_size; break;
1205             default:                 other_size += ost->data_size; break;
1206         }
1207         extra_size += ost->st->codec->extradata_size;
1208         data_size  += ost->data_size;
1209     }
1210
1211     if (data_size && total_size >= data_size)
1212         percent = 100.0 * (total_size - data_size) / data_size;
1213
1214     av_log(NULL, AV_LOG_INFO, "\n");
1215     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: ",
1216            video_size / 1024.0,
1217            audio_size / 1024.0,
1218            subtitle_size / 1024.0,
1219            other_size / 1024.0,
1220            extra_size / 1024.0);
1221     if (percent >= 0.0)
1222         av_log(NULL, AV_LOG_INFO, "%f%%", percent);
1223     else
1224         av_log(NULL, AV_LOG_INFO, "unknown");
1225     av_log(NULL, AV_LOG_INFO, "\n");
1226
1227     /* print verbose per-stream stats */
1228     for (i = 0; i < nb_input_files; i++) {
1229         InputFile *f = input_files[i];
1230         uint64_t total_packets = 0, total_size = 0;
1231
1232         av_log(NULL, AV_LOG_VERBOSE, "Input file #%d (%s):\n",
1233                i, f->ctx->filename);
1234
1235         for (j = 0; j < f->nb_streams; j++) {
1236             InputStream *ist = input_streams[f->ist_index + j];
1237             enum AVMediaType type = ist->st->codec->codec_type;
1238
1239             total_size    += ist->data_size;
1240             total_packets += ist->nb_packets;
1241
1242             av_log(NULL, AV_LOG_VERBOSE, "  Input stream #%d:%d (%s): ",
1243                    i, j, media_type_string(type));
1244             av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets read (%"PRIu64" bytes); ",
1245                    ist->nb_packets, ist->data_size);
1246
1247             if (ist->decoding_needed) {
1248                 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames decoded",
1249                        ist->frames_decoded);
1250                 if (type == AVMEDIA_TYPE_AUDIO)
1251                     av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ist->samples_decoded);
1252                 av_log(NULL, AV_LOG_VERBOSE, "; ");
1253             }
1254
1255             av_log(NULL, AV_LOG_VERBOSE, "\n");
1256         }
1257
1258         av_log(NULL, AV_LOG_VERBOSE, "  Total: %"PRIu64" packets (%"PRIu64" bytes) demuxed\n",
1259                total_packets, total_size);
1260     }
1261
1262     for (i = 0; i < nb_output_files; i++) {
1263         OutputFile *of = output_files[i];
1264         uint64_t total_packets = 0, total_size = 0;
1265
1266         av_log(NULL, AV_LOG_VERBOSE, "Output file #%d (%s):\n",
1267                i, of->ctx->filename);
1268
1269         for (j = 0; j < of->ctx->nb_streams; j++) {
1270             OutputStream *ost = output_streams[of->ost_index + j];
1271             enum AVMediaType type = ost->st->codec->codec_type;
1272
1273             total_size    += ost->data_size;
1274             total_packets += ost->packets_written;
1275
1276             av_log(NULL, AV_LOG_VERBOSE, "  Output stream #%d:%d (%s): ",
1277                    i, j, media_type_string(type));
1278             if (ost->encoding_needed) {
1279                 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames encoded",
1280                        ost->frames_encoded);
1281                 if (type == AVMEDIA_TYPE_AUDIO)
1282                     av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ost->samples_encoded);
1283                 av_log(NULL, AV_LOG_VERBOSE, "; ");
1284             }
1285
1286             av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets muxed (%"PRIu64" bytes); ",
1287                    ost->packets_written, ost->data_size);
1288
1289             av_log(NULL, AV_LOG_VERBOSE, "\n");
1290         }
1291
1292         av_log(NULL, AV_LOG_VERBOSE, "  Total: %"PRIu64" packets (%"PRIu64" bytes) muxed\n",
1293                total_packets, total_size);
1294     }
1295     if(video_size + data_size + audio_size + subtitle_size + extra_size == 0){
1296         av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1297     }
1298 }
1299
1300 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1301 {
1302     char buf[1024];
1303     AVBPrint buf_script;
1304     OutputStream *ost;
1305     AVFormatContext *oc;
1306     int64_t total_size;
1307     AVCodecContext *enc;
1308     int frame_number, vid, i;
1309     double bitrate;
1310     int64_t pts = INT64_MIN;
1311     static int64_t last_time = -1;
1312     static int qp_histogram[52];
1313     int hours, mins, secs, us;
1314
1315     if (!print_stats && !is_last_report && !progress_avio)
1316         return;
1317
1318     if (!is_last_report) {
1319         if (last_time == -1) {
1320             last_time = cur_time;
1321             return;
1322         }
1323         if ((cur_time - last_time) < 500000)
1324             return;
1325         last_time = cur_time;
1326     }
1327
1328
1329     oc = output_files[0]->ctx;
1330
1331     total_size = avio_size(oc->pb);
1332     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1333         total_size = avio_tell(oc->pb);
1334
1335     buf[0] = '\0';
1336     vid = 0;
1337     av_bprint_init(&buf_script, 0, 1);
1338     for (i = 0; i < nb_output_streams; i++) {
1339         float q = -1;
1340         ost = output_streams[i];
1341         enc = ost->st->codec;
1342         if (!ost->stream_copy && enc->coded_frame)
1343             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1344         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1345             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1346             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1347                        ost->file_index, ost->index, q);
1348         }
1349         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1350             float fps, t = (cur_time-timer_start) / 1000000.0;
1351
1352             frame_number = ost->frame_number;
1353             fps = t > 1 ? frame_number / t : 0;
1354             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1355                      frame_number, fps < 9.95, fps, q);
1356             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1357             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1358             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1359                        ost->file_index, ost->index, q);
1360             if (is_last_report)
1361                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1362             if (qp_hist) {
1363                 int j;
1364                 int qp = lrintf(q);
1365                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1366                     qp_histogram[qp]++;
1367                 for (j = 0; j < 32; j++)
1368                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1369             }
1370             if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1371                 int j;
1372                 double error, error_sum = 0;
1373                 double scale, scale_sum = 0;
1374                 double p;
1375                 char type[3] = { 'Y','U','V' };
1376                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1377                 for (j = 0; j < 3; j++) {
1378                     if (is_last_report) {
1379                         error = enc->error[j];
1380                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1381                     } else {
1382                         error = enc->coded_frame->error[j];
1383                         scale = enc->width * enc->height * 255.0 * 255.0;
1384                     }
1385                     if (j)
1386                         scale /= 4;
1387                     error_sum += error;
1388                     scale_sum += scale;
1389                     p = psnr(error / scale);
1390                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1391                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1392                                ost->file_index, ost->index, type[j] | 32, p);
1393                 }
1394                 p = psnr(error_sum / scale_sum);
1395                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1396                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1397                            ost->file_index, ost->index, p);
1398             }
1399             vid = 1;
1400         }
1401         /* compute min output value */
1402         if (ost->st->pts.val != AV_NOPTS_VALUE)
1403             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1404                                           ost->st->time_base, AV_TIME_BASE_Q));
1405     }
1406
1407     secs = pts / AV_TIME_BASE;
1408     us = pts % AV_TIME_BASE;
1409     mins = secs / 60;
1410     secs %= 60;
1411     hours = mins / 60;
1412     mins %= 60;
1413
1414     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1415
1416     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1417                                  "size=N/A time=");
1418     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1419                                  "size=%8.0fkB time=", total_size / 1024.0);
1420     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1421              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1422              (100 * us) / AV_TIME_BASE);
1423     if (bitrate < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1424                               "bitrate=N/A");
1425     else             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1426                               "bitrate=%6.1fkbits/s", bitrate);
1427     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
1428     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1429     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1430     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1431                hours, mins, secs, us);
1432
1433     if (nb_frames_dup || nb_frames_drop)
1434         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1435                 nb_frames_dup, nb_frames_drop);
1436     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1437     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1438
1439     if (print_stats || is_last_report) {
1440         if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
1441             fprintf(stderr, "%s    \r", buf);
1442         } else
1443             av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1444
1445     fflush(stderr);
1446     }
1447
1448     if (progress_avio) {
1449         av_bprintf(&buf_script, "progress=%s\n",
1450                    is_last_report ? "end" : "continue");
1451         avio_write(progress_avio, buf_script.str,
1452                    FFMIN(buf_script.len, buf_script.size - 1));
1453         avio_flush(progress_avio);
1454         av_bprint_finalize(&buf_script, NULL);
1455         if (is_last_report) {
1456             avio_close(progress_avio);
1457             progress_avio = NULL;
1458         }
1459     }
1460
1461     if (is_last_report)
1462         print_final_stats(total_size);
1463 }
1464
1465 static void flush_encoders(void)
1466 {
1467     int i, ret;
1468
1469     for (i = 0; i < nb_output_streams; i++) {
1470         OutputStream   *ost = output_streams[i];
1471         AVCodecContext *enc = ost->st->codec;
1472         AVFormatContext *os = output_files[ost->file_index]->ctx;
1473         int stop_encoding = 0;
1474
1475         if (!ost->encoding_needed)
1476             continue;
1477
1478         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1479             continue;
1480         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1481             continue;
1482
1483         for (;;) {
1484             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1485             const char *desc;
1486
1487             switch (ost->st->codec->codec_type) {
1488             case AVMEDIA_TYPE_AUDIO:
1489                 encode = avcodec_encode_audio2;
1490                 desc   = "Audio";
1491                 break;
1492             case AVMEDIA_TYPE_VIDEO:
1493                 encode = avcodec_encode_video2;
1494                 desc   = "Video";
1495                 break;
1496             default:
1497                 stop_encoding = 1;
1498             }
1499
1500             if (encode) {
1501                 AVPacket pkt;
1502                 int pkt_size;
1503                 int got_packet;
1504                 av_init_packet(&pkt);
1505                 pkt.data = NULL;
1506                 pkt.size = 0;
1507
1508                 update_benchmark(NULL);
1509                 ret = encode(enc, &pkt, NULL, &got_packet);
1510                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1511                 if (ret < 0) {
1512                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1513                     exit_program(1);
1514                 }
1515                 if (ost->logfile && enc->stats_out) {
1516                     fprintf(ost->logfile, "%s", enc->stats_out);
1517                 }
1518                 if (!got_packet) {
1519                     stop_encoding = 1;
1520                     break;
1521                 }
1522                 if (ost->finished & MUXER_FINISHED) {
1523                     av_free_packet(&pkt);
1524                     continue;
1525                 }
1526                 if (pkt.pts != AV_NOPTS_VALUE)
1527                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1528                 if (pkt.dts != AV_NOPTS_VALUE)
1529                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1530                 if (pkt.duration > 0)
1531                     pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1532                 pkt_size = pkt.size;
1533                 write_frame(os, &pkt, ost);
1534                 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
1535                     do_video_stats(ost, pkt_size);
1536                 }
1537             }
1538
1539             if (stop_encoding)
1540                 break;
1541         }
1542     }
1543 }
1544
1545 /*
1546  * Check whether a packet from ist should be written into ost at this time
1547  */
1548 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1549 {
1550     OutputFile *of = output_files[ost->file_index];
1551     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1552
1553     if (ost->source_index != ist_index)
1554         return 0;
1555
1556     if (ost->finished)
1557         return 0;
1558
1559     if (of->start_time != AV_NOPTS_VALUE && ist->pts < of->start_time)
1560         return 0;
1561
1562     return 1;
1563 }
1564
1565 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1566 {
1567     OutputFile *of = output_files[ost->file_index];
1568     InputFile   *f = input_files [ist->file_index];
1569     int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1570     int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1571     int64_t ist_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ist->st->time_base);
1572     AVPicture pict;
1573     AVPacket opkt;
1574
1575     av_init_packet(&opkt);
1576
1577     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1578         !ost->copy_initial_nonkeyframes)
1579         return;
1580
1581     if (pkt->pts == AV_NOPTS_VALUE) {
1582         if (!ost->frame_number && ist->pts < start_time &&
1583             !ost->copy_prior_start)
1584             return;
1585     } else {
1586         if (!ost->frame_number && pkt->pts < ist_tb_start_time &&
1587             !ost->copy_prior_start)
1588             return;
1589     }
1590
1591     if (of->recording_time != INT64_MAX &&
1592         ist->pts >= of->recording_time + start_time) {
1593         close_output_stream(ost);
1594         return;
1595     }
1596
1597     if (f->recording_time != INT64_MAX) {
1598         start_time = f->ctx->start_time;
1599         if (f->start_time != AV_NOPTS_VALUE)
1600             start_time += f->start_time;
1601         if (ist->pts >= f->recording_time + start_time) {
1602             close_output_stream(ost);
1603             return;
1604         }
1605     }
1606
1607     /* force the input stream PTS */
1608     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
1609         ost->sync_opts++;
1610
1611     if (pkt->pts != AV_NOPTS_VALUE)
1612         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1613     else
1614         opkt.pts = AV_NOPTS_VALUE;
1615
1616     if (pkt->dts == AV_NOPTS_VALUE)
1617         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1618     else
1619         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1620     opkt.dts -= ost_tb_start_time;
1621
1622     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1623         int duration = av_get_audio_frame_duration(ist->st->codec, pkt->size);
1624         if(!duration)
1625             duration = ist->st->codec->frame_size;
1626         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1627                                                (AVRational){1, ist->st->codec->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
1628                                                ost->st->time_base) - ost_tb_start_time;
1629     }
1630
1631     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1632     opkt.flags    = pkt->flags;
1633
1634     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1635     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1636        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1637        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1638        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1639        ) {
1640         if (av_parser_change(ost->parser, ost->st->codec,
1641                              &opkt.data, &opkt.size,
1642                              pkt->data, pkt->size,
1643                              pkt->flags & AV_PKT_FLAG_KEY)) {
1644             opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1645             if (!opkt.buf)
1646                 exit_program(1);
1647         }
1648     } else {
1649         opkt.data = pkt->data;
1650         opkt.size = pkt->size;
1651     }
1652     av_copy_packet_side_data(&opkt, pkt);
1653
1654     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1655         /* store AVPicture in AVPacket, as expected by the output format */
1656         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1657         opkt.data = (uint8_t *)&pict;
1658         opkt.size = sizeof(AVPicture);
1659         opkt.flags |= AV_PKT_FLAG_KEY;
1660     }
1661
1662     write_frame(of->ctx, &opkt, ost);
1663     ost->st->codec->frame_number++;
1664 }
1665
1666 int guess_input_channel_layout(InputStream *ist)
1667 {
1668     AVCodecContext *dec = ist->st->codec;
1669
1670     if (!dec->channel_layout) {
1671         char layout_name[256];
1672
1673         if (dec->channels > ist->guess_layout_max)
1674             return 0;
1675         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1676         if (!dec->channel_layout)
1677             return 0;
1678         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1679                                      dec->channels, dec->channel_layout);
1680         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1681                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1682     }
1683     return 1;
1684 }
1685
1686 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1687 {
1688     AVFrame *decoded_frame, *f;
1689     AVCodecContext *avctx = ist->st->codec;
1690     int i, ret, err = 0, resample_changed;
1691     AVRational decoded_frame_tb;
1692
1693     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1694         return AVERROR(ENOMEM);
1695     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1696         return AVERROR(ENOMEM);
1697     decoded_frame = ist->decoded_frame;
1698
1699     update_benchmark(NULL);
1700     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1701     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1702
1703     if (ret >= 0 && avctx->sample_rate <= 0) {
1704         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1705         ret = AVERROR_INVALIDDATA;
1706     }
1707
1708     if (*got_output || ret<0 || pkt->size)
1709         decode_error_stat[ret<0] ++;
1710
1711     if (!*got_output || ret < 0) {
1712         if (!pkt->size) {
1713             for (i = 0; i < ist->nb_filters; i++)
1714 #if 1
1715                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1716 #else
1717                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1718 #endif
1719         }
1720         return ret;
1721     }
1722
1723     ist->samples_decoded += decoded_frame->nb_samples;
1724     ist->frames_decoded++;
1725
1726 #if 1
1727     /* increment next_dts to use for the case where the input stream does not
1728        have timestamps or there are multiple frames in the packet */
1729     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1730                      avctx->sample_rate;
1731     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1732                      avctx->sample_rate;
1733 #endif
1734
1735     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1736                        ist->resample_channels       != avctx->channels               ||
1737                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1738                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1739     if (resample_changed) {
1740         char layout1[64], layout2[64];
1741
1742         if (!guess_input_channel_layout(ist)) {
1743             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1744                    "layout for Input Stream #%d.%d\n", ist->file_index,
1745                    ist->st->index);
1746             exit_program(1);
1747         }
1748         decoded_frame->channel_layout = avctx->channel_layout;
1749
1750         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1751                                      ist->resample_channel_layout);
1752         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1753                                      decoded_frame->channel_layout);
1754
1755         av_log(NULL, AV_LOG_INFO,
1756                "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",
1757                ist->file_index, ist->st->index,
1758                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1759                ist->resample_channels, layout1,
1760                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1761                avctx->channels, layout2);
1762
1763         ist->resample_sample_fmt     = decoded_frame->format;
1764         ist->resample_sample_rate    = decoded_frame->sample_rate;
1765         ist->resample_channel_layout = decoded_frame->channel_layout;
1766         ist->resample_channels       = avctx->channels;
1767
1768         for (i = 0; i < nb_filtergraphs; i++)
1769             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1770                 FilterGraph *fg = filtergraphs[i];
1771                 int j;
1772                 if (configure_filtergraph(fg) < 0) {
1773                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1774                     exit_program(1);
1775                 }
1776                 for (j = 0; j < fg->nb_outputs; j++) {
1777                     OutputStream *ost = fg->outputs[j]->ost;
1778                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1779                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1780                         av_buffersink_set_frame_size(ost->filter->filter,
1781                                                      ost->st->codec->frame_size);
1782                 }
1783             }
1784     }
1785
1786     /* if the decoder provides a pts, use it instead of the last packet pts.
1787        the decoder could be delaying output by a packet or more. */
1788     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1789         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1790         decoded_frame_tb   = avctx->time_base;
1791     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1792         decoded_frame->pts = decoded_frame->pkt_pts;
1793         pkt->pts           = AV_NOPTS_VALUE;
1794         decoded_frame_tb   = ist->st->time_base;
1795     } else if (pkt->pts != AV_NOPTS_VALUE) {
1796         decoded_frame->pts = pkt->pts;
1797         pkt->pts           = AV_NOPTS_VALUE;
1798         decoded_frame_tb   = ist->st->time_base;
1799     }else {
1800         decoded_frame->pts = ist->dts;
1801         decoded_frame_tb   = AV_TIME_BASE_Q;
1802     }
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     return 0;
2893 }
2894
2895 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2896 static int need_output(void)
2897 {
2898     int i;
2899
2900     for (i = 0; i < nb_output_streams; i++) {
2901         OutputStream *ost    = output_streams[i];
2902         OutputFile *of       = output_files[ost->file_index];
2903         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2904
2905         if (ost->finished ||
2906             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2907             continue;
2908         if (ost->frame_number >= ost->max_frames) {
2909             int j;
2910             for (j = 0; j < of->ctx->nb_streams; j++)
2911                 close_output_stream(output_streams[of->ost_index + j]);
2912             continue;
2913         }
2914
2915         return 1;
2916     }
2917
2918     return 0;
2919 }
2920
2921 /**
2922  * Select the output stream to process.
2923  *
2924  * @return  selected output stream, or NULL if none available
2925  */
2926 static OutputStream *choose_output(void)
2927 {
2928     int i;
2929     int64_t opts_min = INT64_MAX;
2930     OutputStream *ost_min = NULL;
2931
2932     for (i = 0; i < nb_output_streams; i++) {
2933         OutputStream *ost = output_streams[i];
2934         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2935                                     AV_TIME_BASE_Q);
2936         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2937             opts_min = opts;
2938             ost_min  = ost;
2939         }
2940     }
2941     return ost_min;
2942 }
2943
2944 static int check_keyboard_interaction(int64_t cur_time)
2945 {
2946     int i, ret, key;
2947     static int64_t last_time;
2948     if (received_nb_signals)
2949         return AVERROR_EXIT;
2950     /* read_key() returns 0 on EOF */
2951     if(cur_time - last_time >= 100000 && !run_as_daemon){
2952         key =  read_key();
2953         last_time = cur_time;
2954     }else
2955         key = -1;
2956     if (key == 'q')
2957         return AVERROR_EXIT;
2958     if (key == '+') av_log_set_level(av_log_get_level()+10);
2959     if (key == '-') av_log_set_level(av_log_get_level()-10);
2960     if (key == 's') qp_hist     ^= 1;
2961     if (key == 'h'){
2962         if (do_hex_dump){
2963             do_hex_dump = do_pkt_dump = 0;
2964         } else if(do_pkt_dump){
2965             do_hex_dump = 1;
2966         } else
2967             do_pkt_dump = 1;
2968         av_log_set_level(AV_LOG_DEBUG);
2969     }
2970     if (key == 'c' || key == 'C'){
2971         char buf[4096], target[64], command[256], arg[256] = {0};
2972         double time;
2973         int k, n = 0;
2974         fprintf(stderr, "\nEnter command: <target>|all <time>|-1 <command>[ <argument>]\n");
2975         i = 0;
2976         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2977             if (k > 0)
2978                 buf[i++] = k;
2979         buf[i] = 0;
2980         if (k > 0 &&
2981             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2982             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2983                    target, time, command, arg);
2984             for (i = 0; i < nb_filtergraphs; i++) {
2985                 FilterGraph *fg = filtergraphs[i];
2986                 if (fg->graph) {
2987                     if (time < 0) {
2988                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2989                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2990                         fprintf(stderr, "Command reply for stream %d: ret:%d res:\n%s", i, ret, buf);
2991                     } else if (key == 'c') {
2992                         fprintf(stderr, "Queing commands only on filters supporting the specific command is unsupported\n");
2993                         ret = AVERROR_PATCHWELCOME;
2994                     } else {
2995                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2996                     }
2997                 }
2998             }
2999         } else {
3000             av_log(NULL, AV_LOG_ERROR,
3001                    "Parse error, at least 3 arguments were expected, "
3002                    "only %d given in string '%s'\n", n, buf);
3003         }
3004     }
3005     if (key == 'd' || key == 'D'){
3006         int debug=0;
3007         if(key == 'D') {
3008             debug = input_streams[0]->st->codec->debug<<1;
3009             if(!debug) debug = 1;
3010             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
3011                 debug += debug;
3012         }else
3013             if(scanf("%d", &debug)!=1)
3014                 fprintf(stderr,"error parsing debug value\n");
3015         for(i=0;i<nb_input_streams;i++) {
3016             input_streams[i]->st->codec->debug = debug;
3017         }
3018         for(i=0;i<nb_output_streams;i++) {
3019             OutputStream *ost = output_streams[i];
3020             ost->st->codec->debug = debug;
3021         }
3022         if(debug) av_log_set_level(AV_LOG_DEBUG);
3023         fprintf(stderr,"debug=%d\n", debug);
3024     }
3025     if (key == '?'){
3026         fprintf(stderr, "key    function\n"
3027                         "?      show this help\n"
3028                         "+      increase verbosity\n"
3029                         "-      decrease verbosity\n"
3030                         "c      Send command to first matching filter supporting it\n"
3031                         "C      Send/Que command to all matching filters\n"
3032                         "D      cycle through available debug modes\n"
3033                         "h      dump packets/hex press to cycle through the 3 states\n"
3034                         "q      quit\n"
3035                         "s      Show QP histogram\n"
3036         );
3037     }
3038     return 0;
3039 }
3040
3041 #if HAVE_PTHREADS
3042 static void *input_thread(void *arg)
3043 {
3044     InputFile *f = arg;
3045     int ret = 0;
3046
3047     while (!transcoding_finished && ret >= 0) {
3048         AVPacket pkt;
3049         ret = av_read_frame(f->ctx, &pkt);
3050
3051         if (ret == AVERROR(EAGAIN)) {
3052             av_usleep(10000);
3053             ret = 0;
3054             continue;
3055         } else if (ret < 0)
3056             break;
3057
3058         pthread_mutex_lock(&f->fifo_lock);
3059         while (!av_fifo_space(f->fifo))
3060             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
3061
3062         av_dup_packet(&pkt);
3063         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
3064         pthread_cond_signal(&f->fifo_cond);
3065
3066         pthread_mutex_unlock(&f->fifo_lock);
3067     }
3068
3069     pthread_mutex_lock(&f->fifo_lock);
3070     f->finished = 1;
3071     pthread_cond_signal(&f->fifo_cond);
3072     pthread_mutex_unlock(&f->fifo_lock);
3073     return NULL;
3074 }
3075
3076 static void free_input_threads(void)
3077 {
3078     int i;
3079
3080     if (nb_input_files == 1)
3081         return;
3082
3083     transcoding_finished = 1;
3084
3085     for (i = 0; i < nb_input_files; i++) {
3086         InputFile *f = input_files[i];
3087         AVPacket pkt;
3088
3089         if (!f->fifo || f->joined)
3090             continue;
3091
3092         pthread_mutex_lock(&f->fifo_lock);
3093         while (av_fifo_size(f->fifo)) {
3094             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
3095             av_free_packet(&pkt);
3096         }
3097         pthread_cond_signal(&f->fifo_cond);
3098         pthread_mutex_unlock(&f->fifo_lock);
3099
3100         pthread_join(f->thread, NULL);
3101         f->joined = 1;
3102
3103         while (av_fifo_size(f->fifo)) {
3104             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
3105             av_free_packet(&pkt);
3106         }
3107         av_fifo_free(f->fifo);
3108     }
3109 }
3110
3111 static int init_input_threads(void)
3112 {
3113     int i, ret;
3114
3115     if (nb_input_files == 1)
3116         return 0;
3117
3118     for (i = 0; i < nb_input_files; i++) {
3119         InputFile *f = input_files[i];
3120
3121         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
3122             return AVERROR(ENOMEM);
3123
3124         if (f->ctx->pb ? !f->ctx->pb->seekable :
3125             strcmp(f->ctx->iformat->name, "lavfi"))
3126             f->non_blocking = 1;
3127
3128         pthread_mutex_init(&f->fifo_lock, NULL);
3129         pthread_cond_init (&f->fifo_cond, NULL);
3130
3131         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
3132             return AVERROR(ret);
3133     }
3134     return 0;
3135 }
3136
3137 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
3138 {
3139     int ret = 0;
3140
3141     pthread_mutex_lock(&f->fifo_lock);
3142
3143     while (1) {
3144     if (av_fifo_size(f->fifo)) {
3145         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
3146         pthread_cond_signal(&f->fifo_cond);
3147         break;
3148     } else {
3149         if (f->finished) {
3150             ret = AVERROR_EOF;
3151             break;
3152         }
3153         if (f->non_blocking) {
3154             ret = AVERROR(EAGAIN);
3155             break;
3156         }
3157         pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
3158     }
3159     }
3160
3161     pthread_mutex_unlock(&f->fifo_lock);
3162
3163     return ret;
3164 }
3165 #endif
3166
3167 static int get_input_packet(InputFile *f, AVPacket *pkt)
3168 {
3169     if (f->rate_emu) {
3170         int i;
3171         for (i = 0; i < f->nb_streams; i++) {
3172             InputStream *ist = input_streams[f->ist_index + i];
3173             int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
3174             int64_t now = av_gettime() - ist->start;
3175             if (pts > now)
3176                 return AVERROR(EAGAIN);
3177         }
3178     }
3179
3180 #if HAVE_PTHREADS
3181     if (nb_input_files > 1)
3182         return get_input_packet_mt(f, pkt);
3183 #endif
3184     return av_read_frame(f->ctx, pkt);
3185 }
3186
3187 static int got_eagain(void)
3188 {
3189     int i;
3190     for (i = 0; i < nb_output_streams; i++)
3191         if (output_streams[i]->unavailable)
3192             return 1;
3193     return 0;
3194 }
3195
3196 static void reset_eagain(void)
3197 {
3198     int i;
3199     for (i = 0; i < nb_input_files; i++)
3200         input_files[i]->eagain = 0;
3201     for (i = 0; i < nb_output_streams; i++)
3202         output_streams[i]->unavailable = 0;
3203 }
3204
3205 /*
3206  * Return
3207  * - 0 -- one packet was read and processed
3208  * - AVERROR(EAGAIN) -- no packets were available for selected file,
3209  *   this function should be called again
3210  * - AVERROR_EOF -- this function should not be called again
3211  */
3212 static int process_input(int file_index)
3213 {
3214     InputFile *ifile = input_files[file_index];
3215     AVFormatContext *is;
3216     InputStream *ist;
3217     AVPacket pkt;
3218     int ret, i, j;
3219
3220     is  = ifile->ctx;
3221     ret = get_input_packet(ifile, &pkt);
3222
3223     if (ret == AVERROR(EAGAIN)) {
3224         ifile->eagain = 1;
3225         return ret;
3226     }
3227     if (ret < 0) {
3228         if (ret != AVERROR_EOF) {
3229             print_error(is->filename, ret);
3230             if (exit_on_error)
3231                 exit_program(1);
3232         }
3233         ifile->eof_reached = 1;
3234
3235         for (i = 0; i < ifile->nb_streams; i++) {
3236             ist = input_streams[ifile->ist_index + i];
3237             if (ist->decoding_needed)
3238                 output_packet(ist, NULL);
3239
3240             /* mark all outputs that don't go through lavfi as finished */
3241             for (j = 0; j < nb_output_streams; j++) {
3242                 OutputStream *ost = output_streams[j];
3243
3244                 if (ost->source_index == ifile->ist_index + i &&
3245                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
3246                     close_output_stream(ost);
3247             }
3248         }
3249
3250         return AVERROR(EAGAIN);
3251     }
3252
3253     reset_eagain();
3254
3255     if (do_pkt_dump) {
3256         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
3257                          is->streams[pkt.stream_index]);
3258     }
3259     /* the following test is needed in case new streams appear
3260        dynamically in stream : we ignore them */
3261     if (pkt.stream_index >= ifile->nb_streams) {
3262         report_new_stream(file_index, &pkt);
3263         goto discard_packet;
3264     }
3265
3266     ist = input_streams[ifile->ist_index + pkt.stream_index];
3267
3268     ist->data_size += pkt.size;
3269     ist->nb_packets++;
3270
3271     if (ist->discard)
3272         goto discard_packet;
3273
3274     if (debug_ts) {
3275         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
3276                "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",
3277                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
3278                av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
3279                av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
3280                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3281                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3282                av_ts2str(input_files[ist->file_index]->ts_offset),
3283                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3284     }
3285
3286     if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
3287         int64_t stime, stime2;
3288         // Correcting starttime based on the enabled streams
3289         // 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.
3290         //       so we instead do it here as part of discontinuity handling
3291         if (   ist->next_dts == AV_NOPTS_VALUE
3292             && ifile->ts_offset == -is->start_time
3293             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
3294             int64_t new_start_time = INT64_MAX;
3295             for (i=0; i<is->nb_streams; i++) {
3296                 AVStream *st = is->streams[i];
3297                 if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
3298                     continue;
3299                 new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
3300             }
3301             if (new_start_time > is->start_time) {
3302                 av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
3303                 ifile->ts_offset = -new_start_time;
3304             }
3305         }
3306
3307         stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
3308         stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
3309         ist->wrap_correction_done = 1;
3310
3311         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
3312             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
3313             ist->wrap_correction_done = 0;
3314         }
3315         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
3316             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
3317             ist->wrap_correction_done = 0;
3318         }
3319     }
3320
3321     /* add the stream-global side data to the first packet */
3322     if (ist->nb_packets == 1)
3323         for (i = 0; i < ist->st->nb_side_data; i++) {
3324             AVPacketSideData *src_sd = &ist->st->side_data[i];
3325             uint8_t *dst_data;
3326
3327             if (av_packet_get_side_data(&pkt, src_sd->type, NULL))
3328                 continue;
3329
3330             dst_data = av_packet_new_side_data(&pkt, src_sd->type, src_sd->size);
3331             if (!dst_data)
3332                 exit_program(1);
3333
3334             memcpy(dst_data, src_sd->data, src_sd->size);
3335         }
3336
3337     if (pkt.dts != AV_NOPTS_VALUE)
3338         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3339     if (pkt.pts != AV_NOPTS_VALUE)
3340         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3341
3342     if (pkt.pts != AV_NOPTS_VALUE)
3343         pkt.pts *= ist->ts_scale;
3344     if (pkt.dts != AV_NOPTS_VALUE)
3345         pkt.dts *= ist->ts_scale;
3346
3347     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts == AV_NOPTS_VALUE && !copy_ts
3348         && (is->iformat->flags & AVFMT_TS_DISCONT) && ifile->last_ts != AV_NOPTS_VALUE) {
3349         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3350         int64_t delta   = pkt_dts - ifile->last_ts;
3351         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3352             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3353                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)){
3354             ifile->ts_offset -= delta;
3355             av_log(NULL, AV_LOG_DEBUG,
3356                    "Inter stream timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3357                    delta, ifile->ts_offset);
3358             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3359             if (pkt.pts != AV_NOPTS_VALUE)
3360                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3361         }
3362     }
3363
3364     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
3365         !copy_ts) {
3366         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3367         int64_t delta   = pkt_dts - ist->next_dts;
3368         if (is->iformat->flags & AVFMT_TS_DISCONT) {
3369             if (delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3370                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3371                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3372                 pkt_dts + AV_TIME_BASE/10 < FFMAX(ist->pts, ist->dts)) {
3373                 ifile->ts_offset -= delta;
3374                 av_log(NULL, AV_LOG_DEBUG,
3375                        "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3376                        delta, ifile->ts_offset);
3377                 pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3378                 if (pkt.pts != AV_NOPTS_VALUE)
3379                     pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3380             }
3381         } else {
3382             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3383                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)) {
3384                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3385                 pkt.dts = AV_NOPTS_VALUE;
3386             }
3387             if (pkt.pts != AV_NOPTS_VALUE){
3388                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3389                 delta   = pkt_pts - ist->next_dts;
3390                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3391                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)) {
3392                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3393                     pkt.pts = AV_NOPTS_VALUE;
3394                 }
3395             }
3396         }
3397     }
3398
3399     if (pkt.dts != AV_NOPTS_VALUE)
3400         ifile->last_ts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3401
3402     if (debug_ts) {
3403         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",
3404                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
3405                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3406                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3407                av_ts2str(input_files[ist->file_index]->ts_offset),
3408                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3409     }
3410
3411     sub2video_heartbeat(ist, pkt.pts);
3412
3413     ret = output_packet(ist, &pkt);
3414     if (ret < 0) {
3415         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
3416                ist->file_index, ist->st->index, av_err2str(ret));
3417         if (exit_on_error)
3418             exit_program(1);
3419     }
3420
3421 discard_packet:
3422     av_free_packet(&pkt);
3423
3424     return 0;
3425 }
3426
3427 /**
3428  * Perform a step of transcoding for the specified filter graph.
3429  *
3430  * @param[in]  graph     filter graph to consider
3431  * @param[out] best_ist  input stream where a frame would allow to continue
3432  * @return  0 for success, <0 for error
3433  */
3434 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
3435 {
3436     int i, ret;
3437     int nb_requests, nb_requests_max = 0;
3438     InputFilter *ifilter;
3439     InputStream *ist;
3440
3441     *best_ist = NULL;
3442     ret = avfilter_graph_request_oldest(graph->graph);
3443     if (ret >= 0)
3444         return reap_filters();
3445
3446     if (ret == AVERROR_EOF) {
3447         ret = reap_filters();
3448         for (i = 0; i < graph->nb_outputs; i++)
3449             close_output_stream(graph->outputs[i]->ost);
3450         return ret;
3451     }
3452     if (ret != AVERROR(EAGAIN))
3453         return ret;
3454
3455     for (i = 0; i < graph->nb_inputs; i++) {
3456         ifilter = graph->inputs[i];
3457         ist = ifilter->ist;
3458         if (input_files[ist->file_index]->eagain ||
3459             input_files[ist->file_index]->eof_reached)
3460             continue;
3461         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
3462         if (nb_requests > nb_requests_max) {
3463             nb_requests_max = nb_requests;
3464             *best_ist = ist;
3465         }
3466     }
3467
3468     if (!*best_ist)
3469         for (i = 0; i < graph->nb_outputs; i++)
3470             graph->outputs[i]->ost->unavailable = 1;
3471
3472     return 0;
3473 }
3474
3475 /**
3476  * Run a single step of transcoding.
3477  *
3478  * @return  0 for success, <0 for error
3479  */
3480 static int transcode_step(void)
3481 {
3482     OutputStream *ost;
3483     InputStream  *ist;
3484     int ret;
3485
3486     ost = choose_output();
3487     if (!ost) {
3488         if (got_eagain()) {
3489             reset_eagain();
3490             av_usleep(10000);
3491             return 0;
3492         }
3493         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
3494         return AVERROR_EOF;
3495     }
3496
3497     if (ost->filter) {
3498         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
3499             return ret;
3500         if (!ist)
3501             return 0;
3502     } else {
3503         av_assert0(ost->source_index >= 0);
3504         ist = input_streams[ost->source_index];
3505     }
3506
3507     ret = process_input(ist->file_index);
3508     if (ret == AVERROR(EAGAIN)) {
3509         if (input_files[ist->file_index]->eagain)
3510             ost->unavailable = 1;
3511         return 0;
3512     }
3513     if (ret < 0)
3514         return ret == AVERROR_EOF ? 0 : ret;
3515
3516     return reap_filters();
3517 }
3518
3519 /*
3520  * The following code is the main loop of the file converter
3521  */
3522 static int transcode(void)
3523 {
3524     int ret, i;
3525     AVFormatContext *os;
3526     OutputStream *ost;
3527     InputStream *ist;
3528     int64_t timer_start;
3529
3530     ret = transcode_init();
3531     if (ret < 0)
3532         goto fail;
3533
3534     if (stdin_interaction) {
3535         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3536     }
3537
3538     timer_start = av_gettime();
3539
3540 #if HAVE_PTHREADS
3541     if ((ret = init_input_threads()) < 0)
3542         goto fail;
3543 #endif
3544
3545     while (!received_sigterm) {
3546         int64_t cur_time= av_gettime();
3547
3548         /* if 'q' pressed, exits */
3549         if (stdin_interaction)
3550             if (check_keyboard_interaction(cur_time) < 0)
3551                 break;
3552
3553         /* check if there's any stream where output is still needed */
3554         if (!need_output()) {
3555             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3556             break;
3557         }
3558
3559         ret = transcode_step();
3560         if (ret < 0) {
3561             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
3562                 continue;
3563
3564             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
3565             break;
3566         }
3567
3568         /* dump report by using the output first video and audio streams */
3569         print_report(0, timer_start, cur_time);
3570     }
3571 #if HAVE_PTHREADS
3572     free_input_threads();
3573 #endif
3574
3575     /* at the end of stream, we must flush the decoder buffers */
3576     for (i = 0; i < nb_input_streams; i++) {
3577         ist = input_streams[i];
3578         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3579             output_packet(ist, NULL);
3580         }
3581     }
3582     flush_encoders();
3583
3584     term_exit();
3585
3586     /* write the trailer if needed and close file */
3587     for (i = 0; i < nb_output_files; i++) {
3588         os = output_files[i]->ctx;
3589         av_write_trailer(os);
3590     }
3591
3592     /* dump report by using the first video and audio streams */
3593     print_report(1, timer_start, av_gettime());
3594
3595     /* close each encoder */
3596     for (i = 0; i < nb_output_streams; i++) {
3597         ost = output_streams[i];
3598         if (ost->encoding_needed) {
3599             av_freep(&ost->st->codec->stats_in);
3600             avcodec_close(ost->st->codec);
3601         }
3602     }
3603
3604     /* close each decoder */
3605     for (i = 0; i < nb_input_streams; i++) {
3606         ist = input_streams[i];
3607         if (ist->decoding_needed) {
3608             avcodec_close(ist->st->codec);
3609             if (ist->hwaccel_uninit)
3610                 ist->hwaccel_uninit(ist->st->codec);
3611         }
3612     }
3613
3614     /* finished ! */
3615     ret = 0;
3616
3617  fail:
3618 #if HAVE_PTHREADS
3619     free_input_threads();
3620 #endif
3621
3622     if (output_streams) {
3623         for (i = 0; i < nb_output_streams; i++) {
3624             ost = output_streams[i];
3625             if (ost) {
3626                 if (ost->stream_copy)
3627                     av_freep(&ost->st->codec->extradata);
3628                 if (ost->logfile) {
3629                     fclose(ost->logfile);
3630                     ost->logfile = NULL;
3631                 }
3632                 av_freep(&ost->st->codec->subtitle_header);
3633                 av_freep(&ost->forced_kf_pts);
3634                 av_freep(&ost->apad);
3635                 av_dict_free(&ost->opts);
3636                 av_dict_free(&ost->swr_opts);
3637                 av_dict_free(&ost->resample_opts);
3638             }
3639         }
3640     }
3641     return ret;
3642 }
3643
3644
3645 static int64_t getutime(void)
3646 {
3647 #if HAVE_GETRUSAGE
3648     struct rusage rusage;
3649
3650     getrusage(RUSAGE_SELF, &rusage);
3651     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3652 #elif HAVE_GETPROCESSTIMES
3653     HANDLE proc;
3654     FILETIME c, e, k, u;
3655     proc = GetCurrentProcess();
3656     GetProcessTimes(proc, &c, &e, &k, &u);
3657     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3658 #else
3659     return av_gettime();
3660 #endif
3661 }
3662
3663 static int64_t getmaxrss(void)
3664 {
3665 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3666     struct rusage rusage;
3667     getrusage(RUSAGE_SELF, &rusage);
3668     return (int64_t)rusage.ru_maxrss * 1024;
3669 #elif HAVE_GETPROCESSMEMORYINFO
3670     HANDLE proc;
3671     PROCESS_MEMORY_COUNTERS memcounters;
3672     proc = GetCurrentProcess();
3673     memcounters.cb = sizeof(memcounters);
3674     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3675     return memcounters.PeakPagefileUsage;
3676 #else
3677     return 0;
3678 #endif
3679 }
3680
3681 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3682 {
3683 }
3684
3685 int main(int argc, char **argv)
3686 {
3687     int ret;
3688     int64_t ti;
3689
3690     register_exit(ffmpeg_cleanup);
3691
3692     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3693
3694     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3695     parse_loglevel(argc, argv, options);
3696
3697     if(argc>1 && !strcmp(argv[1], "-d")){
3698         run_as_daemon=1;
3699         av_log_set_callback(log_callback_null);
3700         argc--;
3701         argv++;
3702     }
3703
3704     avcodec_register_all();
3705 #if CONFIG_AVDEVICE
3706     avdevice_register_all();
3707 #endif
3708     avfilter_register_all();
3709     av_register_all();
3710     avformat_network_init();
3711
3712     show_banner(argc, argv, options);
3713
3714     term_init();
3715
3716     /* parse options and open all input/output files */
3717     ret = ffmpeg_parse_options(argc, argv);
3718     if (ret < 0)
3719         exit_program(1);
3720
3721     if (nb_output_files <= 0 && nb_input_files == 0) {
3722         show_usage();
3723         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3724         exit_program(1);
3725     }
3726
3727     /* file converter / grab */
3728     if (nb_output_files <= 0) {
3729         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3730         exit_program(1);
3731     }
3732
3733 //     if (nb_input_files == 0) {
3734 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3735 //         exit_program(1);
3736 //     }
3737
3738     current_time = ti = getutime();
3739     if (transcode() < 0)
3740         exit_program(1);
3741     ti = getutime() - ti;
3742     if (do_benchmark) {
3743         printf("bench: utime=%0.3fs\n", ti / 1000000.0);
3744     }
3745     av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" frames successfully decoded, %"PRIu64" decoding errors\n",
3746            decode_error_stat[0], decode_error_stat[1]);
3747     if ((decode_error_stat[0] + decode_error_stat[1]) * max_error_rate < decode_error_stat[1])
3748         exit_program(69);
3749
3750     exit_program(received_nb_signals ? 255 : main_return_code);
3751     return main_return_code;
3752 }