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

   1 /*
   2  * Copyright (c) 2000-2003 Fabrice Bellard
   3  *
   4  * This file is part of FFmpeg.
   5  *
   6  * FFmpeg is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * FFmpeg is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with FFmpeg; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 /**
  22  * @file
  23  * multimedia converter based on the FFmpeg libraries
  24  */
  25
  26 #include "config.h"
  27 #include <ctype.h>
  28 #include <string.h>
  29 #include <math.h>
  30 #include <stdlib.h>
  31 #include <errno.h>
  32 #include <limits.h>
  33 #include <stdint.h>
  34
  35 #if HAVE_ISATTY
  36 #if HAVE_IO_H
  37 #include <io.h>
  38 #endif
  39 #if HAVE_UNISTD_H
  40 #include <unistd.h>
  41 #endif
  42 #endif
  43
  44 #include "libavformat/avformat.h"
  45 #include "libavdevice/avdevice.h"
  46 #include "libswresample/swresample.h"
  47 #include "libavutil/opt.h"
  48 #include "libavutil/channel_layout.h"
  49 #include "libavutil/parseutils.h"
  50 #include "libavutil/samplefmt.h"
  51 #include "libavutil/fifo.h"
  52 #include "libavutil/intreadwrite.h"
  53 #include "libavutil/dict.h"
  54 #include "libavutil/mathematics.h"
  55 #include "libavutil/pixdesc.h"
  56 #include "libavutil/avstring.h"
  57 #include "libavutil/libm.h"
  58 #include "libavutil/imgutils.h"
  59 #include "libavutil/timestamp.h"
  60 #include "libavutil/bprint.h"
  61 #include "libavutil/time.h"
  62 #include "libavformat/os_support.h"
  63
  64 #include "libavformat/ffm.h" // not public API
  65
  66 # include "libavfilter/avcodec.h"
  67 # include "libavfilter/avfilter.h"
  68 # include "libavfilter/buffersrc.h"
  69 # include "libavfilter/buffersink.h"
  70
  71 #if HAVE_SYS_RESOURCE_H
  72 #include <sys/time.h>
  73 #include <sys/types.h>
  74 #include <sys/resource.h>
  75 #elif HAVE_GETPROCESSTIMES
  76 #include <windows.h>
  77 #endif
  78 #if HAVE_GETPROCESSMEMORYINFO
  79 #include <windows.h>
  80 #include <psapi.h>
  81 #endif
  82
  83 #if HAVE_SYS_SELECT_H
  84 #include <sys/select.h>
  85 #endif
  86
  87 #if HAVE_TERMIOS_H
  88 #include <fcntl.h>
  89 #include <sys/ioctl.h>
  90 #include <sys/time.h>
  91 #include <termios.h>
  92 #elif HAVE_KBHIT
  93 #include <conio.h>
  94 #endif
  95
  96 #if HAVE_PTHREADS
  97 #include <pthread.h>
  98 #endif
  99
 100 #include <time.h>
 101
 102 #include "ffmpeg.h"
 103 #include "cmdutils.h"
 104
 105 #include "libavutil/avassert.h"
 106
 107 const char program_name[] = "ffmpeg";
 108 const int program_birth_year = 2000;
 109
 110 static FILE *vstats_file;
 111
 112 const char *const forced_keyframes_const_names[] = {
 113     "n",
 114     "n_forced",
 115     "prev_forced_n",
 116     "prev_forced_t",
 117     "t",
 118     NULL
 119 };
 120
 121 static void do_video_stats(OutputStream *ost, int frame_size);
 122 static int64_t getutime(void);
 123 static int64_t getmaxrss(void);
 124
 125 static int run_as_daemon  = 0;
 126 static int nb_frames_dup = 0;
 127 static int nb_frames_drop = 0;
 128 static int64_t decode_error_stat[2];
 129
 130 static int current_time;
 131 AVIOContext *progress_avio = NULL;
 132
 133 static uint8_t *subtitle_out;
 134
 135 #if HAVE_PTHREADS
 136 /* signal to input threads that they should exit; set by the main thread */
 137 static int transcoding_finished;
 138 #endif
 139
 140 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
 141
 142 InputStream **input_streams = NULL;
 143 int        nb_input_streams = 0;
 144 InputFile   **input_files   = NULL;
 145 int        nb_input_files   = 0;
 146
 147 OutputStream **output_streams = NULL;
 148 int         nb_output_streams = 0;
 149 OutputFile   **output_files   = NULL;
 150 int         nb_output_files   = 0;
 151
 152 FilterGraph **filtergraphs;
 153 int        nb_filtergraphs;
 154
 155 #if HAVE_TERMIOS_H
 156
 157 /* init terminal so that we can grab keys */
 158 static struct termios oldtty;
 159 static int restore_tty;
 160 #endif
 161
 162 static void free_input_threads(void);
 163
 164
 165 /* sub2video hack:
 166    Convert subtitles to video with alpha to insert them in filter graphs.
 167    This is a temporary solution until libavfilter gets real subtitles support.
 168  */
 169
 170 static int sub2video_get_blank_frame(InputStream *ist)
 171 {
 172     int ret;
 173     AVFrame *frame = ist->sub2video.frame;
 174
 175     av_frame_unref(frame);
 176     ist->sub2video.frame->width  = ist->sub2video.w;
 177     ist->sub2video.frame->height = ist->sub2video.h;
 178     ist->sub2video.frame->format = AV_PIX_FMT_RGB32;
 179     if ((ret = av_frame_get_buffer(frame, 32)) < 0)
 180         return ret;
 181     memset(frame->data[0], 0, frame->height * frame->linesize[0]);
 182     return 0;
 183 }
 184
 185 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
 186                                 AVSubtitleRect *r)
 187 {
 188     uint32_t *pal, *dst2;
 189     uint8_t *src, *src2;
 190     int x, y;
 191
 192     if (r->type != SUBTITLE_BITMAP) {
 193         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
 194         return;
 195     }
 196     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
 197         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
 198         return;
 199     }
 200
 201     dst += r->y * dst_linesize + r->x * 4;
 202     src = r->pict.data[0];
 203     pal = (uint32_t *)r->pict.data[1];
 204     for (y = 0; y < r->h; y++) {
 205         dst2 = (uint32_t *)dst;
 206         src2 = src;
 207         for (x = 0; x < r->w; x++)
 208             *(dst2++) = pal[*(src2++)];
 209         dst += dst_linesize;
 210         src += r->pict.linesize[0];
 211     }
 212 }
 213
 214 static void sub2video_push_ref(InputStream *ist, int64_t pts)
 215 {
 216     AVFrame *frame = ist->sub2video.frame;
 217     int i;
 218
 219     av_assert1(frame->data[0]);
 220     ist->sub2video.last_pts = frame->pts = pts;
 221     for (i = 0; i < ist->nb_filters; i++)
 222         av_buffersrc_add_frame_flags(ist->filters[i]->filter, frame,
 223                                      AV_BUFFERSRC_FLAG_KEEP_REF |
 224                                      AV_BUFFERSRC_FLAG_PUSH);
 225 }
 226
 227 static void sub2video_update(InputStream *ist, AVSubtitle *sub)
 228 {
 229     int w = ist->sub2video.w, h = ist->sub2video.h;
 230     AVFrame *frame = ist->sub2video.frame;
 231     int8_t *dst;
 232     int     dst_linesize;
 233     int num_rects, i;
 234     int64_t pts, end_pts;
 235
 236     if (!frame)
 237         return;
 238     if (sub) {
 239         pts       = av_rescale_q(sub->pts + sub->start_display_time * 1000,
 240                                  AV_TIME_BASE_Q, ist->st->time_base);
 241         end_pts   = av_rescale_q(sub->pts + sub->end_display_time   * 1000,
 242                                  AV_TIME_BASE_Q, ist->st->time_base);
 243         num_rects = sub->num_rects;
 244     } else {
 245         pts       = ist->sub2video.end_pts;
 246         end_pts   = INT64_MAX;
 247         num_rects = 0;
 248     }
 249     if (sub2video_get_blank_frame(ist) < 0) {
 250         av_log(ist->st->codec, AV_LOG_ERROR,
 251                "Impossible to get a blank canvas.\n");
 252         return;
 253     }
 254     dst          = frame->data    [0];
 255     dst_linesize = frame->linesize[0];
 256     for (i = 0; i < num_rects; i++)
 257         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
 258     sub2video_push_ref(ist, pts);
 259     ist->sub2video.end_pts = end_pts;
 260 }
 261
 262 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
 263 {
 264     InputFile *infile = input_files[ist->file_index];
 265     int i, j, nb_reqs;
 266     int64_t pts2;
 267
 268     /* When a frame is read from a file, examine all sub2video streams in
 269        the same file and send the sub2video frame again. Otherwise, decoded
 270        video frames could be accumulating in the filter graph while a filter
 271        (possibly overlay) is desperately waiting for a subtitle frame. */
 272     for (i = 0; i < infile->nb_streams; i++) {
 273         InputStream *ist2 = input_streams[infile->ist_index + i];
 274         if (!ist2->sub2video.frame)
 275             continue;
 276         /* subtitles seem to be usually muxed ahead of other streams;
 277            if not, substracting a larger time here is necessary */
 278         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
 279         /* do not send the heartbeat frame if the subtitle is already ahead */
 280         if (pts2 <= ist2->sub2video.last_pts)
 281             continue;
 282         if (pts2 >= ist2->sub2video.end_pts || !ist2->sub2video.frame->data[0])
 283             sub2video_update(ist2, NULL);
 284         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
 285             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
 286         if (nb_reqs)
 287             sub2video_push_ref(ist2, pts2);
 288     }
 289 }
 290
 291 static void sub2video_flush(InputStream *ist)
 292 {
 293     int i;
 294
 295     if (ist->sub2video.end_pts < INT64_MAX)
 296         sub2video_update(ist, NULL);
 297     for (i = 0; i < ist->nb_filters; i++)
 298         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
 299 }
 300
 301 /* end of sub2video hack */
 302
 303 static void term_exit_sigsafe(void)
 304 {
 305 #if HAVE_TERMIOS_H
 306     if(restore_tty)
 307         tcsetattr (0, TCSANOW, &oldtty);
 308 #endif
 309 }
 310
 311 void term_exit(void)
 312 {
 313     av_log(NULL, AV_LOG_QUIET, "%s", "");
 314     term_exit_sigsafe();
 315 }
 316
 317 static volatile int received_sigterm = 0;
 318 static volatile int received_nb_signals = 0;
 319 static volatile int transcode_init_done = 0;
 320 static int main_return_code = 0;
 321
 322 static void
 323 sigterm_handler(int sig)
 324 {
 325     received_sigterm = sig;
 326     received_nb_signals++;
 327     term_exit_sigsafe();
 328     if(received_nb_signals > 3)
 329         exit(123);
 330 }
 331
 332 void term_init(void)
 333 {
 334 #if HAVE_TERMIOS_H
 335     if(!run_as_daemon){
 336         struct termios tty;
 337         int istty = 1;
 338 #if HAVE_ISATTY
 339         istty = isatty(0) && isatty(2);
 340 #endif
 341         if (istty && tcgetattr (0, &tty) == 0) {
 342             oldtty = tty;
 343             restore_tty = 1;
 344
 345             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
 346                              |INLCR|IGNCR|ICRNL|IXON);
 347             tty.c_oflag |= OPOST;
 348             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
 349             tty.c_cflag &= ~(CSIZE|PARENB);
 350             tty.c_cflag |= CS8;
 351             tty.c_cc[VMIN] = 1;
 352             tty.c_cc[VTIME] = 0;
 353
 354             tcsetattr (0, TCSANOW, &tty);
 355         }
 356         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
 357     }
 358 #endif
 359     avformat_network_deinit();
 360
 361     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
 362     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
 363 #ifdef SIGXCPU
 364     signal(SIGXCPU, sigterm_handler);
 365 #endif
 366 }
 367
 368 /* read a key without blocking */
 369 static int read_key(void)
 370 {
 371     unsigned char ch;
 372 #if HAVE_TERMIOS_H
 373     int n = 1;
 374     struct timeval tv;
 375     fd_set rfds;
 376
 377     FD_ZERO(&rfds);
 378     FD_SET(0, &rfds);
 379     tv.tv_sec = 0;
 380     tv.tv_usec = 0;
 381     n = select(1, &rfds, NULL, NULL, &tv);
 382     if (n > 0) {
 383         n = read(0, &ch, 1);
 384         if (n == 1)
 385             return ch;
 386
 387         return n;
 388     }
 389 #elif HAVE_KBHIT
 390 #    if HAVE_PEEKNAMEDPIPE
 391     static int is_pipe;
 392     static HANDLE input_handle;
 393     DWORD dw, nchars;
 394     if(!input_handle){
 395         input_handle = GetStdHandle(STD_INPUT_HANDLE);
 396         is_pipe = !GetConsoleMode(input_handle, &dw);
 397     }
 398
 399     if (stdin->_cnt > 0) {
 400         read(0, &ch, 1);
 401         return ch;
 402     }
 403     if (is_pipe) {
 404         /* When running under a GUI, you will end here. */
 405         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL)) {
 406             // input pipe may have been closed by the program that ran ffmpeg
 407             return -1;
 408         }
 409         //Read it
 410         if(nchars != 0) {
 411             read(0, &ch, 1);
 412             return ch;
 413         }else{
 414             return -1;
 415         }
 416     }
 417 #    endif
 418     if(kbhit())
 419         return(getch());
 420 #endif
 421     return -1;
 422 }
 423
 424 static int decode_interrupt_cb(void *ctx)
 425 {
 426     return received_nb_signals > transcode_init_done;
 427 }
 428
 429 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
 430
 431 static void ffmpeg_cleanup(int ret)
 432 {
 433     int i, j;
 434
 435     if (do_benchmark) {
 436         int maxrss = getmaxrss() / 1024;
 437         printf("bench: maxrss=%ikB\n", maxrss);
 438     }
 439
 440     for (i = 0; i < nb_filtergraphs; i++) {
 441         avfilter_graph_free(&filtergraphs[i]->graph);
 442         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
 443             av_freep(&filtergraphs[i]->inputs[j]->name);
 444             av_freep(&filtergraphs[i]->inputs[j]);
 445         }
 446         av_freep(&filtergraphs[i]->inputs);
 447         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
 448             av_freep(&filtergraphs[i]->outputs[j]->name);
 449             av_freep(&filtergraphs[i]->outputs[j]);
 450         }
 451         av_freep(&filtergraphs[i]->outputs);
 452         av_freep(&filtergraphs[i]->graph_desc);
 453         av_freep(&filtergraphs[i]);
 454     }
 455     av_freep(&filtergraphs);
 456
 457     av_freep(&subtitle_out);
 458
 459     /* close files */
 460     for (i = 0; i < nb_output_files; i++) {
 461         AVFormatContext *s = output_files[i]->ctx;
 462         if (s && s->oformat && !(s->oformat->flags & AVFMT_NOFILE) && s->pb)
 463             avio_close(s->pb);
 464         avformat_free_context(s);
 465         av_dict_free(&output_files[i]->opts);
 466         av_freep(&output_files[i]);
 467     }
 468     for (i = 0; i < nb_output_streams; i++) {
 469         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
 470         while (bsfc) {
 471             AVBitStreamFilterContext *next = bsfc->next;
 472             av_bitstream_filter_close(bsfc);
 473             bsfc = next;
 474         }
 475         output_streams[i]->bitstream_filters = NULL;
 476         av_frame_free(&output_streams[i]->filtered_frame);
 477
 478         av_parser_close(output_streams[i]->parser);
 479
 480         av_freep(&output_streams[i]->forced_keyframes);
 481         av_expr_free(output_streams[i]->forced_keyframes_pexpr);
 482         av_freep(&output_streams[i]->avfilter);
 483         av_freep(&output_streams[i]->logfile_prefix);
 484         av_freep(&output_streams[i]);
 485     }
 486 #if HAVE_PTHREADS
 487     free_input_threads();
 488 #endif
 489     for (i = 0; i < nb_input_files; i++) {
 490         avformat_close_input(&input_files[i]->ctx);
 491         av_freep(&input_files[i]);
 492     }
 493     for (i = 0; i < nb_input_streams; i++) {
 494         av_frame_free(&input_streams[i]->decoded_frame);
 495         av_frame_free(&input_streams[i]->filter_frame);
 496         av_dict_free(&input_streams[i]->opts);
 497         avsubtitle_free(&input_streams[i]->prev_sub.subtitle);
 498         av_frame_free(&input_streams[i]->sub2video.frame);
 499         av_freep(&input_streams[i]->filters);
 500         av_freep(&input_streams[i]->hwaccel_device);
 501         av_freep(&input_streams[i]);
 502     }
 503
 504     if (vstats_file)
 505         fclose(vstats_file);
 506     av_free(vstats_filename);
 507
 508     av_freep(&input_streams);
 509     av_freep(&input_files);
 510     av_freep(&output_streams);
 511     av_freep(&output_files);
 512
 513     uninit_opts();
 514
 515     avformat_network_deinit();
 516
 517     if (received_sigterm) {
 518         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
 519                (int) received_sigterm);
 520     } else if (ret) {
 521         av_log(NULL, AV_LOG_INFO, "Conversion failed!\n");
 522     }
 523     term_exit();
 524 }
 525
 526 void assert_avoptions(AVDictionary *m)
 527 {
 528     AVDictionaryEntry *t;
 529     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
 530         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
 531         exit_program(1);
 532     }
 533 }
 534
 535 static void abort_codec_experimental(AVCodec *c, int encoder)
 536 {
 537     exit_program(1);
 538 }
 539
 540 static void update_benchmark(const char *fmt, ...)
 541 {
 542     if (do_benchmark_all) {
 543         int64_t t = getutime();
 544         va_list va;
 545         char buf[1024];
 546
 547         if (fmt) {
 548             va_start(va, fmt);
 549             vsnprintf(buf, sizeof(buf), fmt, va);
 550             va_end(va);
 551             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
 552         }
 553         current_time = t;
 554     }
 555 }
 556
 557 static void close_all_output_streams(OutputStream *ost, OSTFinished this_stream, OSTFinished others)
 558 {
 559     int i;
 560     for (i = 0; i < nb_output_streams; i++) {
 561         OutputStream *ost2 = output_streams[i];
 562         ost2->finished |= ost == ost2 ? this_stream : others;
 563     }
 564 }
 565
 566 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
 567 {
 568     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
 569     AVCodecContext          *avctx = ost->st->codec;
 570     int ret;
 571
 572     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
 573         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
 574         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
 575
 576     /*
 577      * Audio encoders may split the packets --  #frames in != #packets out.
 578      * But there is no reordering, so we can limit the number of output packets
 579      * by simply dropping them here.
 580      * Counting encoded video frames needs to be done separately because of
 581      * reordering, see do_video_out()
 582      */
 583     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
 584         if (ost->frame_number >= ost->max_frames) {
 585             av_free_packet(pkt);
 586             return;
 587         }
 588         ost->frame_number++;
 589     }
 590
 591     while (bsfc) {
 592         AVPacket new_pkt = *pkt;
 593         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
 594                                            &new_pkt.data, &new_pkt.size,
 595                                            pkt->data, pkt->size,
 596                                            pkt->flags & AV_PKT_FLAG_KEY);
 597         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
 598             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
 599             if(t) {
 600                 memcpy(t, new_pkt.data, new_pkt.size);
 601                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
 602                 new_pkt.data = t;
 603                 new_pkt.buf = NULL;
 604                 a = 1;
 605             } else
 606                 a = AVERROR(ENOMEM);
 607         }
 608         if (a > 0) {
 609             av_free_packet(pkt);
 610             new_pkt.buf = av_buffer_create(new_pkt.data, new_pkt.size,
 611                                            av_buffer_default_free, NULL, 0);
 612             if (!new_pkt.buf)
 613                 exit_program(1);
 614         } else if (a < 0) {
 615             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
 616                    bsfc->filter->name, pkt->stream_index,
 617                    avctx->codec ? avctx->codec->name : "copy");
 618             print_error("", a);
 619             if (exit_on_error)
 620                 exit_program(1);
 621         }
 622         *pkt = new_pkt;
 623
 624         bsfc = bsfc->next;
 625     }
 626
 627     if (!(s->oformat->flags & AVFMT_NOTIMESTAMPS) &&
 628         (avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) &&
 629         pkt->dts != AV_NOPTS_VALUE &&
 630         ost->last_mux_dts != AV_NOPTS_VALUE) {
 631       int64_t max = ost->last_mux_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
 632       if (pkt->dts < max) {
 633         int loglevel = max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG;
 634         av_log(s, loglevel, "Non-monotonous DTS in output stream "
 635                "%d:%d; previous: %"PRId64", current: %"PRId64"; ",
 636                ost->file_index, ost->st->index, ost->last_mux_dts, pkt->dts);
 637         if (exit_on_error) {
 638             av_log(NULL, AV_LOG_FATAL, "aborting.\n");
 639             exit_program(1);
 640         }
 641         av_log(s, loglevel, "changing to %"PRId64". This may result "
 642                "in incorrect timestamps in the output file.\n",
 643                max);
 644         if(pkt->pts >= pkt->dts)
 645             pkt->pts = FFMAX(pkt->pts, max);
 646         pkt->dts = max;
 647       }
 648     }
 649     ost->last_mux_dts = pkt->dts;
 650
 651     ost->data_size += pkt->size;
 652     ost->packets_written++;
 653
 654     pkt->stream_index = ost->index;
 655
 656     if (debug_ts) {
 657         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
 658                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
 659                 av_get_media_type_string(ost->st->codec->codec_type),
 660                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
 661                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
 662                 pkt->size
 663               );
 664     }
 665
 666     ret = av_interleaved_write_frame(s, pkt);
 667     if (ret < 0) {
 668         print_error("av_interleaved_write_frame()", ret);
 669         main_return_code = 1;
 670         close_all_output_streams(ost, MUXER_FINISHED | ENCODER_FINISHED, ENCODER_FINISHED);
 671     }
 672     av_free_packet(pkt);
 673 }
 674
 675 static void close_output_stream(OutputStream *ost)
 676 {
 677     OutputFile *of = output_files[ost->file_index];
 678
 679     ost->finished |= ENCODER_FINISHED;
 680     if (of->shortest) {
 681         int64_t end = av_rescale_q(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, AV_TIME_BASE_Q);
 682         of->recording_time = FFMIN(of->recording_time, end);
 683     }
 684 }
 685
 686 static int check_recording_time(OutputStream *ost)
 687 {
 688     OutputFile *of = output_files[ost->file_index];
 689
 690     if (of->recording_time != INT64_MAX &&
 691         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
 692                       AV_TIME_BASE_Q) >= 0) {
 693         close_output_stream(ost);
 694         return 0;
 695     }
 696     return 1;
 697 }
 698
 699 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
 700                          AVFrame *frame)
 701 {
 702     AVCodecContext *enc = ost->st->codec;
 703     AVPacket pkt;
 704     int got_packet = 0;
 705
 706     av_init_packet(&pkt);
 707     pkt.data = NULL;
 708     pkt.size = 0;
 709
 710     if (!check_recording_time(ost))
 711         return;
 712
 713     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
 714         frame->pts = ost->sync_opts;
 715     ost->sync_opts = frame->pts + frame->nb_samples;
 716     ost->samples_encoded += frame->nb_samples;
 717     ost->frames_encoded++;
 718
 719     av_assert0(pkt.size || !pkt.data);
 720     update_benchmark(NULL);
 721     if (debug_ts) {
 722         av_log(NULL, AV_LOG_INFO, "encoder <- type:audio "
 723                "frame_pts:%s frame_pts_time:%s time_base:%d/%d\n",
 724                av_ts2str(frame->pts), av_ts2timestr(frame->pts, &enc->time_base),
 725                enc->time_base.num, enc->time_base.den);
 726     }
 727
 728     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
 729         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
 730         exit_program(1);
 731     }
 732     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
 733
 734     if (got_packet) {
 735         if (pkt.pts != AV_NOPTS_VALUE)
 736             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
 737         if (pkt.dts != AV_NOPTS_VALUE)
 738             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
 739         if (pkt.duration > 0)
 740             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
 741
 742         if (debug_ts) {
 743             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
 744                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
 745                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
 746                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
 747         }
 748
 749         write_frame(s, &pkt, ost);
 750     }
 751 }
 752
 753 static void do_subtitle_out(AVFormatContext *s,
 754                             OutputStream *ost,
 755                             InputStream *ist,
 756                             AVSubtitle *sub)
 757 {
 758     int subtitle_out_max_size = 1024 * 1024;
 759     int subtitle_out_size, nb, i;
 760     AVCodecContext *enc;
 761     AVPacket pkt;
 762     int64_t pts;
 763
 764     if (sub->pts == AV_NOPTS_VALUE) {
 765         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
 766         if (exit_on_error)
 767             exit_program(1);
 768         return;
 769     }
 770
 771     enc = ost->st->codec;
 772
 773     if (!subtitle_out) {
 774         subtitle_out = av_malloc(subtitle_out_max_size);
 775     }
 776
 777     /* Note: DVB subtitle need one packet to draw them and one other
 778        packet to clear them */
 779     /* XXX: signal it in the codec context ? */
 780     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
 781         nb = 2;
 782     else
 783         nb = 1;
 784
 785     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
 786     pts = sub->pts;
 787     if (output_files[ost->file_index]->start_time != AV_NOPTS_VALUE)
 788         pts -= output_files[ost->file_index]->start_time;
 789     for (i = 0; i < nb; i++) {
 790         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
 791         if (!check_recording_time(ost))
 792             return;
 793
 794         sub->pts = pts;
 795         // start_display_time is required to be 0
 796         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
 797         sub->end_display_time  -= sub->start_display_time;
 798         sub->start_display_time = 0;
 799         if (i == 1)
 800             sub->num_rects = 0;
 801
 802         ost->frames_encoded++;
 803
 804         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
 805                                                     subtitle_out_max_size, sub);
 806         if (subtitle_out_size < 0) {
 807             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
 808             exit_program(1);
 809         }
 810
 811         av_init_packet(&pkt);
 812         pkt.data = subtitle_out;
 813         pkt.size = subtitle_out_size;
 814         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
 815         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
 816         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
 817             /* XXX: the pts correction is handled here. Maybe handling
 818                it in the codec would be better */
 819             if (i == 0)
 820                 pkt.pts += 90 * sub->start_display_time;
 821             else
 822                 pkt.pts += 90 * sub->end_display_time;
 823         }
 824         write_frame(s, &pkt, ost);
 825     }
 826 }
 827
 828 static void do_video_out(AVFormatContext *s,
 829                          OutputStream *ost,
 830                          AVFrame *in_picture)
 831 {
 832     int ret, format_video_sync;
 833     AVPacket pkt;
 834     AVCodecContext *enc = ost->st->codec;
 835     int nb_frames, i;
 836     double sync_ipts, delta;
 837     double duration = 0;
 838     int frame_size = 0;
 839     InputStream *ist = NULL;
 840
 841     if (ost->source_index >= 0)
 842         ist = input_streams[ost->source_index];
 843
 844     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
 845         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
 846
 847     sync_ipts = in_picture->pts;
 848     delta = sync_ipts - ost->sync_opts + duration;
 849
 850     /* by default, we output a single frame */
 851     nb_frames = 1;
 852
 853     format_video_sync = video_sync_method;
 854     if (format_video_sync == VSYNC_AUTO) {
 855         if(!strcmp(s->oformat->name, "avi")) {
 856             format_video_sync = VSYNC_VFR;
 857         } else
 858             format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : VSYNC_CFR;
 859         if (   ist
 860             && format_video_sync == VSYNC_CFR
 861             && input_files[ist->file_index]->ctx->nb_streams == 1
 862             && input_files[ist->file_index]->input_ts_offset == 0) {
 863             format_video_sync = VSYNC_VSCFR;
 864         }
 865         if (format_video_sync == VSYNC_CFR && copy_ts) {
 866             format_video_sync = VSYNC_VSCFR;
 867         }
 868     }
 869
 870     switch (format_video_sync) {
 871     case VSYNC_VSCFR:
 872         if (ost->frame_number == 0 && delta - duration >= 0.5) {
 873             av_log(NULL, AV_LOG_DEBUG, "Not duplicating %d initial frames\n", (int)lrintf(delta - duration));
 874             delta = duration;
 875             ost->sync_opts = lrint(sync_ipts);
 876         }
 877     case VSYNC_CFR:
 878         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
 879         if (delta < -1.1)
 880             nb_frames = 0;
 881         else if (delta > 1.1)
 882             nb_frames = lrintf(delta);
 883         break;
 884     case VSYNC_VFR:
 885         if (delta <= -0.6)
 886             nb_frames = 0;
 887         else if (delta > 0.6)
 888             ost->sync_opts = lrint(sync_ipts);
 889         break;
 890     case VSYNC_DROP:
 891     case VSYNC_PASSTHROUGH:
 892         ost->sync_opts = lrint(sync_ipts);
 893         break;
 894     default:
 895         av_assert0(0);
 896     }
 897
 898     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
 899     if (nb_frames == 0) {
 900         nb_frames_drop++;
 901         av_log(NULL, AV_LOG_VERBOSE,
 902                "*** dropping frame %d from stream %d at ts %"PRId64"\n",
 903                ost->frame_number, ost->st->index, in_picture->pts);
 904         return;
 905     } else if (nb_frames > 1) {
 906         if (nb_frames > dts_error_threshold * 30) {
 907             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
 908             nb_frames_drop++;
 909             return;
 910         }
 911         nb_frames_dup += nb_frames - 1;
 912         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
 913     }
 914
 915   /* duplicates frame if needed */
 916   for (i = 0; i < nb_frames; i++) {
 917     av_init_packet(&pkt);
 918     pkt.data = NULL;
 919     pkt.size = 0;
 920
 921     in_picture->pts = ost->sync_opts;
 922
 923 #if 1
 924     if (!check_recording_time(ost))
 925 #else
 926     if (ost->frame_number >= ost->max_frames)
 927 #endif
 928         return;
 929
 930     if (s->oformat->flags & AVFMT_RAWPICTURE &&
 931         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
 932         /* raw pictures are written as AVPicture structure to
 933            avoid any copies. We support temporarily the older
 934            method. */
 935         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
 936         enc->coded_frame->top_field_first  = in_picture->top_field_first;
 937         if (enc->coded_frame->interlaced_frame)
 938             enc->field_order = enc->coded_frame->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
 939         else
 940             enc->field_order = AV_FIELD_PROGRESSIVE;
 941         pkt.data   = (uint8_t *)in_picture;
 942         pkt.size   =  sizeof(AVPicture);
 943         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
 944         pkt.flags |= AV_PKT_FLAG_KEY;
 945
 946         write_frame(s, &pkt, ost);
 947     } else {
 948         int got_packet, forced_keyframe = 0;
 949         double pts_time;
 950
 951         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME) &&
 952             ost->top_field_first >= 0)
 953             in_picture->top_field_first = !!ost->top_field_first;
 954
 955         if (in_picture->interlaced_frame) {
 956             if (enc->codec->id == AV_CODEC_ID_MJPEG)
 957                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TT:AV_FIELD_BB;
 958             else
 959                 enc->field_order = in_picture->top_field_first ? AV_FIELD_TB:AV_FIELD_BT;
 960         } else
 961             enc->field_order = AV_FIELD_PROGRESSIVE;
 962
 963         in_picture->quality = ost->st->codec->global_quality;
 964         if (!enc->me_threshold)
 965             in_picture->pict_type = 0;
 966
 967         pts_time = in_picture->pts != AV_NOPTS_VALUE ?
 968             in_picture->pts * av_q2d(enc->time_base) : NAN;
 969         if (ost->forced_kf_index < ost->forced_kf_count &&
 970             in_picture->pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
 971             ost->forced_kf_index++;
 972             forced_keyframe = 1;
 973         } else if (ost->forced_keyframes_pexpr) {
 974             double res;
 975             ost->forced_keyframes_expr_const_values[FKF_T] = pts_time;
 976             res = av_expr_eval(ost->forced_keyframes_pexpr,
 977                                ost->forced_keyframes_expr_const_values, NULL);
 978             av_dlog(NULL, "force_key_frame: n:%f n_forced:%f prev_forced_n:%f t:%f prev_forced_t:%f -> res:%f\n",
 979                     ost->forced_keyframes_expr_const_values[FKF_N],
 980                     ost->forced_keyframes_expr_const_values[FKF_N_FORCED],
 981                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N],
 982                     ost->forced_keyframes_expr_const_values[FKF_T],
 983                     ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T],
 984                     res);
 985             if (res) {
 986                 forced_keyframe = 1;
 987                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] =
 988                     ost->forced_keyframes_expr_const_values[FKF_N];
 989                 ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] =
 990                     ost->forced_keyframes_expr_const_values[FKF_T];
 991                 ost->forced_keyframes_expr_const_values[FKF_N_FORCED] += 1;
 992             }
 993
 994             ost->forced_keyframes_expr_const_values[FKF_N] += 1;
 995         }
 996
 997         if (forced_keyframe) {
 998             in_picture->pict_type = AV_PICTURE_TYPE_I;
 999             av_log(NULL, AV_LOG_DEBUG, "Forced keyframe at time %f\n", pts_time);
1000         }
1001
1002         update_benchmark(NULL);
1003         if (debug_ts) {
1004             av_log(NULL, AV_LOG_INFO, "encoder <- type:video "
1005                    "frame_pts:%s frame_pts_time:%s time_base:%d/%d\n",
1006                    av_ts2str(in_picture->pts), av_ts2timestr(in_picture->pts, &enc->time_base),
1007                    enc->time_base.num, enc->time_base.den);
1008         }
1009
1010         ost->frames_encoded++;
1011
1012         ret = avcodec_encode_video2(enc, &pkt, in_picture, &got_packet);
1013         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
1014         if (ret < 0) {
1015             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
1016             exit_program(1);
1017         }
1018
1019         if (got_packet) {
1020             if (debug_ts) {
1021                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1022                        "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1023                        av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &enc->time_base),
1024                        av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &enc->time_base));
1025             }
1026
1027             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
1028                 pkt.pts = ost->sync_opts;
1029
1030             if (pkt.pts != AV_NOPTS_VALUE)
1031                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1032             if (pkt.dts != AV_NOPTS_VALUE)
1033                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1034
1035             if (debug_ts) {
1036                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
1037                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
1038                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
1039                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
1040             }
1041
1042             frame_size = pkt.size;
1043             write_frame(s, &pkt, ost);
1044
1045             /* if two pass, output log */
1046             if (ost->logfile && enc->stats_out) {
1047                 fprintf(ost->logfile, "%s", enc->stats_out);
1048             }
1049         }
1050     }
1051     ost->sync_opts++;
1052     /*
1053      * For video, number of frames in == number of packets out.
1054      * But there may be reordering, so we can't throw away frames on encoder
1055      * flush, we need to limit them here, before they go into encoder.
1056      */
1057     ost->frame_number++;
1058
1059     if (vstats_filename && frame_size)
1060         do_video_stats(ost, frame_size);
1061   }
1062 }
1063
1064 static double psnr(double d)
1065 {
1066     return -10.0 * log(d) / log(10.0);
1067 }
1068
1069 static void do_video_stats(OutputStream *ost, int frame_size)
1070 {
1071     AVCodecContext *enc;
1072     int frame_number;
1073     double ti1, bitrate, avg_bitrate;
1074
1075     /* this is executed just the first time do_video_stats is called */
1076     if (!vstats_file) {
1077         vstats_file = fopen(vstats_filename, "w");
1078         if (!vstats_file) {
1079             perror("fopen");
1080             exit_program(1);
1081         }
1082     }
1083
1084     enc = ost->st->codec;
1085     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1086         frame_number = ost->st->nb_frames;
1087         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
1088         if (enc->flags&CODEC_FLAG_PSNR)
1089             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
1090
1091         fprintf(vstats_file,"f_size= %6d ", frame_size);
1092         /* compute pts value */
1093         ti1 = ost->st->pts.val * av_q2d(enc->time_base);
1094         if (ti1 < 0.01)
1095             ti1 = 0.01;
1096
1097         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
1098         avg_bitrate = (double)(ost->data_size * 8) / ti1 / 1000.0;
1099         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
1100                (double)ost->data_size / 1024, ti1, bitrate, avg_bitrate);
1101         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
1102     }
1103 }
1104
1105 /**
1106  * Get and encode new output from any of the filtergraphs, without causing
1107  * activity.
1108  *
1109  * @return  0 for success, <0 for severe errors
1110  */
1111 static int reap_filters(void)
1112 {
1113     AVFrame *filtered_frame = NULL;
1114     int i;
1115     int64_t frame_pts;
1116
1117     /* Reap all buffers present in the buffer sinks */
1118     for (i = 0; i < nb_output_streams; i++) {
1119         OutputStream *ost = output_streams[i];
1120         OutputFile    *of = output_files[ost->file_index];
1121         AVFilterContext *filter;
1122         AVCodecContext *enc = ost->st->codec;
1123         int ret = 0;
1124
1125         if (!ost->filter)
1126             continue;
1127         filter = ost->filter->filter;
1128
1129         if (!ost->filtered_frame && !(ost->filtered_frame = av_frame_alloc())) {
1130             return AVERROR(ENOMEM);
1131         }
1132         filtered_frame = ost->filtered_frame;
1133
1134         while (1) {
1135             ret = av_buffersink_get_frame_flags(filter, filtered_frame,
1136                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1137             if (ret < 0) {
1138                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1139                     av_log(NULL, AV_LOG_WARNING,
1140                            "Error in av_buffersink_get_frame_flags(): %s\n", av_err2str(ret));
1141                 }
1142                 break;
1143             }
1144             if (ost->finished) {
1145                 av_frame_unref(filtered_frame);
1146                 continue;
1147             }
1148             frame_pts = AV_NOPTS_VALUE;
1149             if (filtered_frame->pts != AV_NOPTS_VALUE) {
1150                 int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1151                 filtered_frame->pts = frame_pts =
1152                     av_rescale_q(filtered_frame->pts, filter->inputs[0]->time_base, enc->time_base) -
1153                     av_rescale_q(start_time, AV_TIME_BASE_Q, enc->time_base);
1154             }
1155             //if (ost->source_index >= 0)
1156             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1157
1158             switch (filter->inputs[0]->type) {
1159             case AVMEDIA_TYPE_VIDEO:
1160                 filtered_frame->pts = frame_pts;
1161                 if (!ost->frame_aspect_ratio.num)
1162                     enc->sample_aspect_ratio = filtered_frame->sample_aspect_ratio;
1163
1164                 if (debug_ts) {
1165                     av_log(NULL, AV_LOG_INFO, "filter -> pts:%s pts_time:%s time_base:%d/%d\n",
1166                             av_ts2str(filtered_frame->pts), av_ts2timestr(filtered_frame->pts, &enc->time_base),
1167                             enc->time_base.num, enc->time_base.den);
1168                 }
1169
1170                 do_video_out(of->ctx, ost, filtered_frame);
1171                 break;
1172             case AVMEDIA_TYPE_AUDIO:
1173                 filtered_frame->pts = frame_pts;
1174                 if (!(enc->codec->capabilities & CODEC_CAP_PARAM_CHANGE) &&
1175                     enc->channels != av_frame_get_channels(filtered_frame)) {
1176                     av_log(NULL, AV_LOG_ERROR,
1177                            "Audio filter graph output is not normalized and encoder does not support parameter changes\n");
1178                     break;
1179                 }
1180                 do_audio_out(of->ctx, ost, filtered_frame);
1181                 break;
1182             default:
1183                 // TODO support subtitle filters
1184                 av_assert0(0);
1185             }
1186
1187             av_frame_unref(filtered_frame);
1188         }
1189     }
1190
1191     return 0;
1192 }
1193
1194 static void print_final_stats(int64_t total_size)
1195 {
1196     uint64_t video_size = 0, audio_size = 0, extra_size = 0, other_size = 0;
1197     uint64_t subtitle_size = 0;
1198     uint64_t data_size = 0;
1199     float percent = -1.0;
1200     int i, j;
1201
1202     for (i = 0; i < nb_output_streams; i++) {
1203         OutputStream *ost = output_streams[i];
1204         switch (ost->st->codec->codec_type) {
1205             case AVMEDIA_TYPE_VIDEO: video_size += ost->data_size; break;
1206             case AVMEDIA_TYPE_AUDIO: audio_size += ost->data_size; break;
1207             case AVMEDIA_TYPE_SUBTITLE: subtitle_size += ost->data_size; break;
1208             default:                 other_size += ost->data_size; break;
1209         }
1210         extra_size += ost->st->codec->extradata_size;
1211         data_size  += ost->data_size;
1212     }
1213
1214     if (data_size && total_size >= data_size)
1215         percent = 100.0 * (total_size - data_size) / data_size;
1216
1217     av_log(NULL, AV_LOG_INFO, "\n");
1218     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: ",
1219            video_size / 1024.0,
1220            audio_size / 1024.0,
1221            subtitle_size / 1024.0,
1222            other_size / 1024.0,
1223            extra_size / 1024.0);
1224     if (percent >= 0.0)
1225         av_log(NULL, AV_LOG_INFO, "%f%%", percent);
1226     else
1227         av_log(NULL, AV_LOG_INFO, "unknown");
1228     av_log(NULL, AV_LOG_INFO, "\n");
1229
1230     /* print verbose per-stream stats */
1231     for (i = 0; i < nb_input_files; i++) {
1232         InputFile *f = input_files[i];
1233         uint64_t total_packets = 0, total_size = 0;
1234
1235         av_log(NULL, AV_LOG_VERBOSE, "Input file #%d (%s):\n",
1236                i, f->ctx->filename);
1237
1238         for (j = 0; j < f->nb_streams; j++) {
1239             InputStream *ist = input_streams[f->ist_index + j];
1240             enum AVMediaType type = ist->st->codec->codec_type;
1241
1242             total_size    += ist->data_size;
1243             total_packets += ist->nb_packets;
1244
1245             av_log(NULL, AV_LOG_VERBOSE, "  Input stream #%d:%d (%s): ",
1246                    i, j, media_type_string(type));
1247             av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets read (%"PRIu64" bytes); ",
1248                    ist->nb_packets, ist->data_size);
1249
1250             if (ist->decoding_needed) {
1251                 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames decoded",
1252                        ist->frames_decoded);
1253                 if (type == AVMEDIA_TYPE_AUDIO)
1254                     av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ist->samples_decoded);
1255                 av_log(NULL, AV_LOG_VERBOSE, "; ");
1256             }
1257
1258             av_log(NULL, AV_LOG_VERBOSE, "\n");
1259         }
1260
1261         av_log(NULL, AV_LOG_VERBOSE, "  Total: %"PRIu64" packets (%"PRIu64" bytes) demuxed\n",
1262                total_packets, total_size);
1263     }
1264
1265     for (i = 0; i < nb_output_files; i++) {
1266         OutputFile *of = output_files[i];
1267         uint64_t total_packets = 0, total_size = 0;
1268
1269         av_log(NULL, AV_LOG_VERBOSE, "Output file #%d (%s):\n",
1270                i, of->ctx->filename);
1271
1272         for (j = 0; j < of->ctx->nb_streams; j++) {
1273             OutputStream *ost = output_streams[of->ost_index + j];
1274             enum AVMediaType type = ost->st->codec->codec_type;
1275
1276             total_size    += ost->data_size;
1277             total_packets += ost->packets_written;
1278
1279             av_log(NULL, AV_LOG_VERBOSE, "  Output stream #%d:%d (%s): ",
1280                    i, j, media_type_string(type));
1281             if (ost->encoding_needed) {
1282                 av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" frames encoded",
1283                        ost->frames_encoded);
1284                 if (type == AVMEDIA_TYPE_AUDIO)
1285                     av_log(NULL, AV_LOG_VERBOSE, " (%"PRIu64" samples)", ost->samples_encoded);
1286                 av_log(NULL, AV_LOG_VERBOSE, "; ");
1287             }
1288
1289             av_log(NULL, AV_LOG_VERBOSE, "%"PRIu64" packets muxed (%"PRIu64" bytes); ",
1290                    ost->packets_written, ost->data_size);
1291
1292             av_log(NULL, AV_LOG_VERBOSE, "\n");
1293         }
1294
1295         av_log(NULL, AV_LOG_VERBOSE, "  Total: %"PRIu64" packets (%"PRIu64" bytes) muxed\n",
1296                total_packets, total_size);
1297     }
1298     if(video_size + data_size + audio_size + subtitle_size + extra_size == 0){
1299         av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1300     }
1301 }
1302
1303 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1304 {
1305     char buf[1024];
1306     AVBPrint buf_script;
1307     OutputStream *ost;
1308     AVFormatContext *oc;
1309     int64_t total_size;
1310     AVCodecContext *enc;
1311     int frame_number, vid, i;
1312     double bitrate;
1313     int64_t pts = INT64_MIN;
1314     static int64_t last_time = -1;
1315     static int qp_histogram[52];
1316     int hours, mins, secs, us;
1317
1318     if (!print_stats && !is_last_report && !progress_avio)
1319         return;
1320
1321     if (!is_last_report) {
1322         if (last_time == -1) {
1323             last_time = cur_time;
1324             return;
1325         }
1326         if ((cur_time - last_time) < 500000)
1327             return;
1328         last_time = cur_time;
1329     }
1330
1331
1332     oc = output_files[0]->ctx;
1333
1334     total_size = avio_size(oc->pb);
1335     if (total_size <= 0) // FIXME improve avio_size() so it works with non seekable output too
1336         total_size = avio_tell(oc->pb);
1337
1338     buf[0] = '\0';
1339     vid = 0;
1340     av_bprint_init(&buf_script, 0, 1);
1341     for (i = 0; i < nb_output_streams; i++) {
1342         float q = -1;
1343         ost = output_streams[i];
1344         enc = ost->st->codec;
1345         if (!ost->stream_copy && enc->coded_frame)
1346             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1347         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1348             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1349             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1350                        ost->file_index, ost->index, q);
1351         }
1352         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1353             float fps, t = (cur_time-timer_start) / 1000000.0;
1354
1355             frame_number = ost->frame_number;
1356             fps = t > 1 ? frame_number / t : 0;
1357             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1358                      frame_number, fps < 9.95, fps, q);
1359             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1360             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1361             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1362                        ost->file_index, ost->index, q);
1363             if (is_last_report)
1364                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1365             if (qp_hist) {
1366                 int j;
1367                 int qp = lrintf(q);
1368                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1369                     qp_histogram[qp]++;
1370                 for (j = 0; j < 32; j++)
1371                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1372             }
1373             if ((enc->flags&CODEC_FLAG_PSNR) && (enc->coded_frame || is_last_report)) {
1374                 int j;
1375                 double error, error_sum = 0;
1376                 double scale, scale_sum = 0;
1377                 double p;
1378                 char type[3] = { 'Y','U','V' };
1379                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1380                 for (j = 0; j < 3; j++) {
1381                     if (is_last_report) {
1382                         error = enc->error[j];
1383                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1384                     } else {
1385                         error = enc->coded_frame->error[j];
1386                         scale = enc->width * enc->height * 255.0 * 255.0;
1387                     }
1388                     if (j)
1389                         scale /= 4;
1390                     error_sum += error;
1391                     scale_sum += scale;
1392                     p = psnr(error / scale);
1393                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1394                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1395                                ost->file_index, ost->index, type[j] | 32, p);
1396                 }
1397                 p = psnr(error_sum / scale_sum);
1398                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1399                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1400                            ost->file_index, ost->index, p);
1401             }
1402             vid = 1;
1403         }
1404         /* compute min output value */
1405         if (ost->st->pts.val != AV_NOPTS_VALUE)
1406             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1407                                           ost->st->time_base, AV_TIME_BASE_Q));
1408     }
1409
1410     secs = pts / AV_TIME_BASE;
1411     us = pts % AV_TIME_BASE;
1412     mins = secs / 60;
1413     secs %= 60;
1414     hours = mins / 60;
1415     mins %= 60;
1416
1417     bitrate = pts && total_size >= 0 ? total_size * 8 / (pts / 1000.0) : -1;
1418
1419     if (total_size < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1420                                  "size=N/A time=");
1421     else                snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1422                                  "size=%8.0fkB time=", total_size / 1024.0);
1423     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1424              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1425              (100 * us) / AV_TIME_BASE);
1426     if (bitrate < 0) snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1427                               "bitrate=N/A");
1428     else             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1429                               "bitrate=%6.1fkbits/s", bitrate);
1430     if (total_size < 0) av_bprintf(&buf_script, "total_size=N/A\n");
1431     else                av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1432     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1433     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1434                hours, mins, secs, us);
1435
1436     if (nb_frames_dup || nb_frames_drop)
1437         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1438                 nb_frames_dup, nb_frames_drop);
1439     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1440     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1441
1442     if (print_stats || is_last_report) {
1443         if (print_stats==1 && AV_LOG_INFO > av_log_get_level()) {
1444             fprintf(stderr, "%s    \r", buf);
1445         } else
1446             av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1447
1448     fflush(stderr);
1449     }
1450
1451     if (progress_avio) {
1452         av_bprintf(&buf_script, "progress=%s\n",
1453                    is_last_report ? "end" : "continue");
1454         avio_write(progress_avio, buf_script.str,
1455                    FFMIN(buf_script.len, buf_script.size - 1));
1456         avio_flush(progress_avio);
1457         av_bprint_finalize(&buf_script, NULL);
1458         if (is_last_report) {
1459             avio_close(progress_avio);
1460             progress_avio = NULL;
1461         }
1462     }
1463
1464     if (is_last_report)
1465         print_final_stats(total_size);
1466 }
1467
1468 static void flush_encoders(void)
1469 {
1470     int i, ret;
1471
1472     for (i = 0; i < nb_output_streams; i++) {
1473         OutputStream   *ost = output_streams[i];
1474         AVCodecContext *enc = ost->st->codec;
1475         AVFormatContext *os = output_files[ost->file_index]->ctx;
1476         int stop_encoding = 0;
1477
1478         if (!ost->encoding_needed)
1479             continue;
1480
1481         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1482             continue;
1483         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1484             continue;
1485
1486         for (;;) {
1487             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1488             const char *desc;
1489
1490             switch (ost->st->codec->codec_type) {
1491             case AVMEDIA_TYPE_AUDIO:
1492                 encode = avcodec_encode_audio2;
1493                 desc   = "Audio";
1494                 break;
1495             case AVMEDIA_TYPE_VIDEO:
1496                 encode = avcodec_encode_video2;
1497                 desc   = "Video";
1498                 break;
1499             default:
1500                 stop_encoding = 1;
1501             }
1502
1503             if (encode) {
1504                 AVPacket pkt;
1505                 int pkt_size;
1506                 int got_packet;
1507                 av_init_packet(&pkt);
1508                 pkt.data = NULL;
1509                 pkt.size = 0;
1510
1511                 update_benchmark(NULL);
1512                 ret = encode(enc, &pkt, NULL, &got_packet);
1513                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1514                 if (ret < 0) {
1515                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1516                     exit_program(1);
1517                 }
1518                 if (ost->logfile && enc->stats_out) {
1519                     fprintf(ost->logfile, "%s", enc->stats_out);
1520                 }
1521                 if (!got_packet) {
1522                     stop_encoding = 1;
1523                     break;
1524                 }
1525                 if (ost->finished & MUXER_FINISHED) {
1526                     av_free_packet(&pkt);
1527                     continue;
1528                 }
1529                 if (pkt.pts != AV_NOPTS_VALUE)
1530                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1531                 if (pkt.dts != AV_NOPTS_VALUE)
1532                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1533                 if (pkt.duration > 0)
1534                     pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
1535                 pkt_size = pkt.size;
1536                 write_frame(os, &pkt, ost);
1537                 if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && vstats_filename) {
1538                     do_video_stats(ost, pkt_size);
1539                 }
1540             }
1541
1542             if (stop_encoding)
1543                 break;
1544         }
1545     }
1546 }
1547
1548 /*
1549  * Check whether a packet from ist should be written into ost at this time
1550  */
1551 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1552 {
1553     OutputFile *of = output_files[ost->file_index];
1554     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1555
1556     if (ost->source_index != ist_index)
1557         return 0;
1558
1559     if (ost->finished)
1560         return 0;
1561
1562     if (of->start_time != AV_NOPTS_VALUE && ist->pts < of->start_time)
1563         return 0;
1564
1565     return 1;
1566 }
1567
1568 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1569 {
1570     OutputFile *of = output_files[ost->file_index];
1571     InputFile   *f = input_files [ist->file_index];
1572     int64_t start_time = (of->start_time == AV_NOPTS_VALUE) ? 0 : of->start_time;
1573     int64_t ost_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ost->st->time_base);
1574     int64_t ist_tb_start_time = av_rescale_q(start_time, AV_TIME_BASE_Q, ist->st->time_base);
1575     AVPicture pict;
1576     AVPacket opkt;
1577
1578     av_init_packet(&opkt);
1579
1580     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1581         !ost->copy_initial_nonkeyframes)
1582         return;
1583
1584     if (pkt->pts == AV_NOPTS_VALUE) {
1585         if (!ost->frame_number && ist->pts < start_time &&
1586             !ost->copy_prior_start)
1587             return;
1588     } else {
1589         if (!ost->frame_number && pkt->pts < ist_tb_start_time &&
1590             !ost->copy_prior_start)
1591             return;
1592     }
1593
1594     if (of->recording_time != INT64_MAX &&
1595         ist->pts >= of->recording_time + start_time) {
1596         close_output_stream(ost);
1597         return;
1598     }
1599
1600     if (f->recording_time != INT64_MAX) {
1601         start_time = f->ctx->start_time;
1602         if (f->start_time != AV_NOPTS_VALUE)
1603             start_time += f->start_time;
1604         if (ist->pts >= f->recording_time + start_time) {
1605             close_output_stream(ost);
1606             return;
1607         }
1608     }
1609
1610     /* force the input stream PTS */
1611     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO)
1612         ost->sync_opts++;
1613
1614     if (pkt->pts != AV_NOPTS_VALUE)
1615         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1616     else
1617         opkt.pts = AV_NOPTS_VALUE;
1618
1619     if (pkt->dts == AV_NOPTS_VALUE)
1620         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1621     else
1622         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1623     opkt.dts -= ost_tb_start_time;
1624
1625     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && pkt->dts != AV_NOPTS_VALUE) {
1626         int duration = av_get_audio_frame_duration(ist->st->codec, pkt->size);
1627         if(!duration)
1628             duration = ist->st->codec->frame_size;
1629         opkt.dts = opkt.pts = av_rescale_delta(ist->st->time_base, pkt->dts,
1630                                                (AVRational){1, ist->st->codec->sample_rate}, duration, &ist->filter_in_rescale_delta_last,
1631                                                ost->st->time_base) - ost_tb_start_time;
1632     }
1633
1634     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1635     opkt.flags    = pkt->flags;
1636
1637     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1638     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1639        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1640        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1641        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1642        ) {
1643         if (av_parser_change(ost->parser, ost->st->codec,
1644                              &opkt.data, &opkt.size,
1645                              pkt->data, pkt->size,
1646                              pkt->flags & AV_PKT_FLAG_KEY)) {
1647             opkt.buf = av_buffer_create(opkt.data, opkt.size, av_buffer_default_free, NULL, 0);
1648             if (!opkt.buf)
1649                 exit_program(1);
1650         }
1651     } else {
1652         opkt.data = pkt->data;
1653         opkt.size = pkt->size;
1654     }
1655     av_copy_packet_side_data(&opkt, pkt);
1656
1657     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1658         /* store AVPicture in AVPacket, as expected by the output format */
1659         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1660         opkt.data = (uint8_t *)&pict;
1661         opkt.size = sizeof(AVPicture);
1662         opkt.flags |= AV_PKT_FLAG_KEY;
1663     }
1664
1665     write_frame(of->ctx, &opkt, ost);
1666     ost->st->codec->frame_number++;
1667 }
1668
1669 int guess_input_channel_layout(InputStream *ist)
1670 {
1671     AVCodecContext *dec = ist->st->codec;
1672
1673     if (!dec->channel_layout) {
1674         char layout_name[256];
1675
1676         if (dec->channels > ist->guess_layout_max)
1677             return 0;
1678         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1679         if (!dec->channel_layout)
1680             return 0;
1681         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1682                                      dec->channels, dec->channel_layout);
1683         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1684                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1685     }
1686     return 1;
1687 }
1688
1689 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1690 {
1691     AVFrame *decoded_frame, *f;
1692     AVCodecContext *avctx = ist->st->codec;
1693     int i, ret, err = 0, resample_changed;
1694     AVRational decoded_frame_tb;
1695
1696     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1697         return AVERROR(ENOMEM);
1698     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1699         return AVERROR(ENOMEM);
1700     decoded_frame = ist->decoded_frame;
1701
1702     update_benchmark(NULL);
1703     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1704     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1705
1706     if (ret >= 0 && avctx->sample_rate <= 0) {
1707         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1708         ret = AVERROR_INVALIDDATA;
1709     }
1710
1711     if (*got_output || ret<0 || pkt->size)
1712         decode_error_stat[ret<0] ++;
1713
1714     if (!*got_output || ret < 0) {
1715         if (!pkt->size) {
1716             for (i = 0; i < ist->nb_filters; i++)
1717 #if 1
1718                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1719 #else
1720                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1721 #endif
1722         }
1723         return ret;
1724     }
1725
1726     ist->samples_decoded += decoded_frame->nb_samples;
1727     ist->frames_decoded++;
1728
1729 #if 1
1730     /* increment next_dts to use for the case where the input stream does not
1731        have timestamps or there are multiple frames in the packet */
1732     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1733                      avctx->sample_rate;
1734     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1735                      avctx->sample_rate;
1736 #endif
1737
1738     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1739                        ist->resample_channels       != avctx->channels               ||
1740                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1741                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1742     if (resample_changed) {
1743         char layout1[64], layout2[64];
1744
1745         if (!guess_input_channel_layout(ist)) {
1746             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1747                    "layout for Input Stream #%d.%d\n", ist->file_index,
1748                    ist->st->index);
1749             exit_program(1);
1750         }
1751         decoded_frame->channel_layout = avctx->channel_layout;
1752
1753         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1754                                      ist->resample_channel_layout);
1755         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1756                                      decoded_frame->channel_layout);
1757
1758         av_log(NULL, AV_LOG_INFO,
1759                "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",
1760                ist->file_index, ist->st->index,
1761                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1762                ist->resample_channels, layout1,
1763                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1764                avctx->channels, layout2);
1765
1766         ist->resample_sample_fmt     = decoded_frame->format;
1767         ist->resample_sample_rate    = decoded_frame->sample_rate;
1768         ist->resample_channel_layout = decoded_frame->channel_layout;
1769         ist->resample_channels       = avctx->channels;
1770
1771         for (i = 0; i < nb_filtergraphs; i++)
1772             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1773                 FilterGraph *fg = filtergraphs[i];
1774                 int j;
1775                 if (configure_filtergraph(fg) < 0) {
1776                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1777                     exit_program(1);
1778                 }
1779                 for (j = 0; j < fg->nb_outputs; j++) {
1780                     OutputStream *ost = fg->outputs[j]->ost;
1781                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1782                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1783                         av_buffersink_set_frame_size(ost->filter->filter,
1784                                                      ost->st->codec->frame_size);
1785                 }
1786             }
1787     }
1788
1789     /* if the decoder provides a pts, use it instead of the last packet pts.
1790        the decoder could be delaying output by a packet or more. */
1791     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1792         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1793         decoded_frame_tb   = avctx->time_base;
1794     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1795         decoded_frame->pts = decoded_frame->pkt_pts;
1796         decoded_frame_tb   = ist->st->time_base;
1797     } else if (pkt->pts != AV_NOPTS_VALUE) {
1798         decoded_frame->pts = pkt->pts;
1799         decoded_frame_tb   = ist->st->time_base;
1800     }else {
1801         decoded_frame->pts = ist->dts;
1802         decoded_frame_tb   = AV_TIME_BASE_Q;
1803     }
1804     pkt->pts           = AV_NOPTS_VALUE;
1805     if (decoded_frame->pts != AV_NOPTS_VALUE)
1806         decoded_frame->pts = av_rescale_delta(decoded_frame_tb, decoded_frame->pts,
1807                                               (AVRational){1, ist->st->codec->sample_rate}, decoded_frame->nb_samples, &ist->filter_in_rescale_delta_last,
1808                                               (AVRational){1, ist->st->codec->sample_rate});
1809     for (i = 0; i < ist->nb_filters; i++) {
1810         if (i < ist->nb_filters - 1) {
1811             f = ist->filter_frame;
1812             err = av_frame_ref(f, decoded_frame);
1813             if (err < 0)
1814                 break;
1815         } else
1816             f = decoded_frame;
1817         err = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f,
1818                                      AV_BUFFERSRC_FLAG_PUSH);
1819         if (err == AVERROR_EOF)
1820             err = 0; /* ignore */
1821         if (err < 0)
1822             break;
1823     }
1824     decoded_frame->pts = AV_NOPTS_VALUE;
1825
1826     av_frame_unref(ist->filter_frame);
1827     av_frame_unref(decoded_frame);
1828     return err < 0 ? err : ret;
1829 }
1830
1831 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1832 {
1833     AVFrame *decoded_frame, *f;
1834     int i, ret = 0, err = 0, resample_changed;
1835     int64_t best_effort_timestamp;
1836     AVRational *frame_sample_aspect;
1837
1838     if (!ist->decoded_frame && !(ist->decoded_frame = av_frame_alloc()))
1839         return AVERROR(ENOMEM);
1840     if (!ist->filter_frame && !(ist->filter_frame = av_frame_alloc()))
1841         return AVERROR(ENOMEM);
1842     decoded_frame = ist->decoded_frame;
1843     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1844
1845     update_benchmark(NULL);
1846     ret = avcodec_decode_video2(ist->st->codec,
1847                                 decoded_frame, got_output, pkt);
1848     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1849
1850     if (*got_output || ret<0 || pkt->size)
1851         decode_error_stat[ret<0] ++;
1852
1853     if (!*got_output || ret < 0) {
1854         if (!pkt->size) {
1855             for (i = 0; i < ist->nb_filters; i++)
1856 #if 1
1857                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1858 #else
1859                 av_buffersrc_add_frame(ist->filters[i]->filter, NULL);
1860 #endif
1861         }
1862         return ret;
1863     }
1864
1865     if(ist->top_field_first>=0)
1866         decoded_frame->top_field_first = ist->top_field_first;
1867
1868     ist->frames_decoded++;
1869
1870     if (ist->hwaccel_retrieve_data && decoded_frame->format == ist->hwaccel_pix_fmt) {
1871         err = ist->hwaccel_retrieve_data(ist->st->codec, decoded_frame);
1872         if (err < 0)
1873             goto fail;
1874     }
1875     ist->hwaccel_retrieved_pix_fmt = decoded_frame->format;
1876
1877     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1878     if(best_effort_timestamp != AV_NOPTS_VALUE)
1879         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1880
1881     if (debug_ts) {
1882         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1883                "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",
1884                ist->st->index, av_ts2str(decoded_frame->pts),
1885                av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1886                best_effort_timestamp,
1887                av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1888                decoded_frame->key_frame, decoded_frame->pict_type,
1889                ist->st->time_base.num, ist->st->time_base.den);
1890     }
1891
1892     pkt->size = 0;
1893
1894     if (ist->st->sample_aspect_ratio.num)
1895         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1896
1897     resample_changed = ist->resample_width   != decoded_frame->width  ||
1898                        ist->resample_height  != decoded_frame->height ||
1899                        ist->resample_pix_fmt != decoded_frame->format;
1900     if (resample_changed) {
1901         av_log(NULL, AV_LOG_INFO,
1902                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1903                ist->file_index, ist->st->index,
1904                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1905                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1906
1907         ist->resample_width   = decoded_frame->width;
1908         ist->resample_height  = decoded_frame->height;
1909         ist->resample_pix_fmt = decoded_frame->format;
1910
1911         for (i = 0; i < nb_filtergraphs; i++) {
1912             if (ist_in_filtergraph(filtergraphs[i], ist) && ist->reinit_filters &&
1913                 configure_filtergraph(filtergraphs[i]) < 0) {
1914                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1915                 exit_program(1);
1916             }
1917         }
1918     }
1919
1920     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1921     for (i = 0; i < ist->nb_filters; i++) {
1922         if (!frame_sample_aspect->num)
1923             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1924
1925         if (i < ist->nb_filters - 1) {
1926             f = ist->filter_frame;
1927             err = av_frame_ref(f, decoded_frame);
1928             if (err < 0)
1929                 break;
1930         } else
1931             f = decoded_frame;
1932         ret = av_buffersrc_add_frame_flags(ist->filters[i]->filter, f, AV_BUFFERSRC_FLAG_PUSH);
1933         if (ret == AVERROR_EOF) {
1934             ret = 0; /* ignore */
1935         } else if (ret < 0) {
1936             av_log(NULL, AV_LOG_FATAL,
1937                    "Failed to inject frame into filter network: %s\n", av_err2str(ret));
1938             exit_program(1);
1939         }
1940     }
1941
1942 fail:
1943     av_frame_unref(ist->filter_frame);
1944     av_frame_unref(decoded_frame);
1945     return err < 0 ? err : ret;
1946 }
1947
1948 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1949 {
1950     AVSubtitle subtitle;
1951     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1952                                           &subtitle, got_output, pkt);
1953
1954     if (*got_output || ret<0 || pkt->size)
1955         decode_error_stat[ret<0] ++;
1956
1957     if (ret < 0 || !*got_output) {
1958         if (!pkt->size)
1959             sub2video_flush(ist);
1960         return ret;
1961     }
1962
1963     if (ist->fix_sub_duration) {
1964         int end = 1;
1965         if (ist->prev_sub.got_output) {
1966             end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1967                              1000, AV_TIME_BASE);
1968             if (end < ist->prev_sub.subtitle.end_display_time) {
1969                 av_log(ist->st->codec, AV_LOG_DEBUG,
1970                        "Subtitle duration reduced from %d to %d%s\n",
1971                        ist->prev_sub.subtitle.end_display_time, end,
1972                        end <= 0 ? ", dropping it" : "");
1973                 ist->prev_sub.subtitle.end_display_time = end;
1974             }
1975         }
1976         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1977         FFSWAP(int,        ret,         ist->prev_sub.ret);
1978         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1979         if (end <= 0)
1980             goto out;
1981     }
1982
1983     if (!*got_output)
1984         return ret;
1985
1986     sub2video_update(ist, &subtitle);
1987
1988     if (!subtitle.num_rects)
1989         goto out;
1990
1991     ist->frames_decoded++;
1992
1993     for (i = 0; i < nb_output_streams; i++) {
1994         OutputStream *ost = output_streams[i];
1995
1996         if (!check_output_constraints(ist, ost) || !ost->encoding_needed
1997             || ost->enc->type != AVMEDIA_TYPE_SUBTITLE)
1998             continue;
1999
2000         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
2001     }
2002
2003 out:
2004     avsubtitle_free(&subtitle);
2005     return ret;
2006 }
2007
2008 /* pkt = NULL means EOF (needed to flush decoder buffers) */
2009 static int output_packet(InputStream *ist, const AVPacket *pkt)
2010 {
2011     int ret = 0, i;
2012     int got_output = 0;
2013
2014     AVPacket avpkt;
2015     if (!ist->saw_first_ts) {
2016         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;
2017         ist->pts = 0;
2018         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
2019             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
2020             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
2021         }
2022         ist->saw_first_ts = 1;
2023     }
2024
2025     if (ist->next_dts == AV_NOPTS_VALUE)
2026         ist->next_dts = ist->dts;
2027     if (ist->next_pts == AV_NOPTS_VALUE)
2028         ist->next_pts = ist->pts;
2029
2030     if (pkt == NULL) {
2031         /* EOF handling */
2032         av_init_packet(&avpkt);
2033         avpkt.data = NULL;
2034         avpkt.size = 0;
2035         goto handle_eof;
2036     } else {
2037         avpkt = *pkt;
2038     }
2039
2040     if (pkt->dts != AV_NOPTS_VALUE) {
2041         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
2042         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
2043             ist->next_pts = ist->pts = ist->dts;
2044     }
2045
2046     // while we have more to decode or while the decoder did output something on EOF
2047     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
2048         int duration;
2049     handle_eof:
2050
2051         ist->pts = ist->next_pts;
2052         ist->dts = ist->next_dts;
2053
2054         if (avpkt.size && avpkt.size != pkt->size &&
2055             !(ist->dec->capabilities & CODEC_CAP_SUBFRAMES)) {
2056             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
2057                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
2058             ist->showed_multi_packet_warning = 1;
2059         }
2060
2061         switch (ist->st->codec->codec_type) {
2062         case AVMEDIA_TYPE_AUDIO:
2063             ret = decode_audio    (ist, &avpkt, &got_output);
2064             break;
2065         case AVMEDIA_TYPE_VIDEO:
2066             ret = decode_video    (ist, &avpkt, &got_output);
2067             if (avpkt.duration) {
2068                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
2069             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
2070                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
2071                 duration = ((int64_t)AV_TIME_BASE *
2072                                 ist->st->codec->time_base.num * ticks) /
2073                                 ist->st->codec->time_base.den;
2074             } else
2075                 duration = 0;
2076
2077             if(ist->dts != AV_NOPTS_VALUE && duration) {
2078                 ist->next_dts += duration;
2079             }else
2080                 ist->next_dts = AV_NOPTS_VALUE;
2081
2082             if (got_output)
2083                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
2084             break;
2085         case AVMEDIA_TYPE_SUBTITLE:
2086             ret = transcode_subtitles(ist, &avpkt, &got_output);
2087             break;
2088         default:
2089             return -1;
2090         }
2091
2092         if (ret < 0)
2093             return ret;
2094
2095         avpkt.dts=
2096         avpkt.pts= AV_NOPTS_VALUE;
2097
2098         // touch data and size only if not EOF
2099         if (pkt) {
2100             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
2101                 ret = avpkt.size;
2102             avpkt.data += ret;
2103             avpkt.size -= ret;
2104         }
2105         if (!got_output) {
2106             continue;
2107         }
2108     }
2109
2110     /* handle stream copy */
2111     if (!ist->decoding_needed) {
2112         ist->dts = ist->next_dts;
2113         switch (ist->st->codec->codec_type) {
2114         case AVMEDIA_TYPE_AUDIO:
2115             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
2116                              ist->st->codec->sample_rate;
2117             break;
2118         case AVMEDIA_TYPE_VIDEO:
2119             if (ist->framerate.num) {
2120                 // TODO: Remove work-around for c99-to-c89 issue 7
2121                 AVRational time_base_q = AV_TIME_BASE_Q;
2122                 int64_t next_dts = av_rescale_q(ist->next_dts, time_base_q, av_inv_q(ist->framerate));
2123                 ist->next_dts = av_rescale_q(next_dts + 1, av_inv_q(ist->framerate), time_base_q);
2124             } else if (pkt->duration) {
2125                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
2126             } else if(ist->st->codec->time_base.num != 0) {
2127                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
2128                 ist->next_dts += ((int64_t)AV_TIME_BASE *
2129                                   ist->st->codec->time_base.num * ticks) /
2130                                   ist->st->codec->time_base.den;
2131             }
2132             break;
2133         }
2134         ist->pts = ist->dts;
2135         ist->next_pts = ist->next_dts;
2136     }
2137     for (i = 0; pkt && i < nb_output_streams; i++) {
2138         OutputStream *ost = output_streams[i];
2139
2140         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
2141             continue;
2142
2143         do_streamcopy(ist, ost, pkt);
2144     }
2145
2146     return 0;
2147 }
2148
2149 static void print_sdp(void)
2150 {
2151     char sdp[16384];
2152     int i;
2153     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
2154
2155     if (!avc)
2156         exit_program(1);
2157     for (i = 0; i < nb_output_files; i++)
2158         avc[i] = output_files[i]->ctx;
2159
2160     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
2161     printf("SDP:\n%s\n", sdp);
2162     fflush(stdout);
2163     av_freep(&avc);
2164 }
2165
2166 static const HWAccel *get_hwaccel(enum AVPixelFormat pix_fmt)
2167 {
2168     int i;
2169     for (i = 0; hwaccels[i].name; i++)
2170         if (hwaccels[i].pix_fmt == pix_fmt)
2171             return &hwaccels[i];
2172     return NULL;
2173 }
2174
2175 static enum AVPixelFormat get_format(AVCodecContext *s, const enum AVPixelFormat *pix_fmts)
2176 {
2177     InputStream *ist = s->opaque;
2178     const enum AVPixelFormat *p;
2179     int ret;
2180
2181     for (p = pix_fmts; *p != -1; p++) {
2182         const AVPixFmtDescriptor *desc = av_pix_fmt_desc_get(*p);
2183         const HWAccel *hwaccel;
2184
2185         if (!(desc->flags & AV_PIX_FMT_FLAG_HWACCEL))
2186             break;
2187
2188         hwaccel = get_hwaccel(*p);
2189         if (!hwaccel ||
2190             (ist->active_hwaccel_id && ist->active_hwaccel_id != hwaccel->id) ||
2191             (ist->hwaccel_id != HWACCEL_AUTO && ist->hwaccel_id != hwaccel->id))
2192             continue;
2193
2194         ret = hwaccel->init(s);
2195         if (ret < 0) {
2196             if (ist->hwaccel_id == hwaccel->id) {
2197                 av_log(NULL, AV_LOG_FATAL,
2198                        "%s hwaccel requested for input stream #%d:%d, "
2199                        "but cannot be initialized.\n", hwaccel->name,
2200                        ist->file_index, ist->st->index);
2201                 exit_program(1);
2202             }
2203             continue;
2204         }
2205         ist->active_hwaccel_id = hwaccel->id;
2206         ist->hwaccel_pix_fmt   = *p;
2207         break;
2208     }
2209
2210     return *p;
2211 }
2212
2213 static int get_buffer(AVCodecContext *s, AVFrame *frame, int flags)
2214 {
2215     InputStream *ist = s->opaque;
2216
2217     if (ist->hwaccel_get_buffer && frame->format == ist->hwaccel_pix_fmt)
2218         return ist->hwaccel_get_buffer(s, frame, flags);
2219
2220     return avcodec_default_get_buffer2(s, frame, flags);
2221 }
2222
2223 static int init_input_stream(int ist_index, char *error, int error_len)
2224 {
2225     int ret;
2226     InputStream *ist = input_streams[ist_index];
2227
2228     if (ist->decoding_needed) {
2229         AVCodec *codec = ist->dec;
2230         if (!codec) {
2231             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
2232                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
2233             return AVERROR(EINVAL);
2234         }
2235
2236         ist->st->codec->opaque      = ist;
2237         ist->st->codec->get_format  = get_format;
2238         ist->st->codec->get_buffer2 = get_buffer;
2239         ist->st->codec->thread_safe_callbacks = 1;
2240
2241         av_opt_set_int(ist->st->codec, "refcounted_frames", 1, 0);
2242
2243         if (!av_dict_get(ist->opts, "threads", NULL, 0))
2244             av_dict_set(&ist->opts, "threads", "auto", 0);
2245         if ((ret = avcodec_open2(ist->st->codec, codec, &ist->opts)) < 0) {
2246             if (ret == AVERROR_EXPERIMENTAL)
2247                 abort_codec_experimental(codec, 0);
2248
2249             snprintf(error, error_len,
2250                      "Error while opening decoder for input stream "
2251                      "#%d:%d : %s",
2252                      ist->file_index, ist->st->index, av_err2str(ret));
2253             return ret;
2254         }
2255         assert_avoptions(ist->opts);
2256     }
2257
2258     ist->next_pts = AV_NOPTS_VALUE;
2259     ist->next_dts = AV_NOPTS_VALUE;
2260
2261     return 0;
2262 }
2263
2264 static InputStream *get_input_stream(OutputStream *ost)
2265 {
2266     if (ost->source_index >= 0)
2267         return input_streams[ost->source_index];
2268     return NULL;
2269 }
2270
2271 static int compare_int64(const void *a, const void *b)
2272 {
2273     int64_t va = *(int64_t *)a, vb = *(int64_t *)b;
2274     return va < vb ? -1 : va > vb ? +1 : 0;
2275 }
2276
2277 static void parse_forced_key_frames(char *kf, OutputStream *ost,
2278                                     AVCodecContext *avctx)
2279 {
2280     char *p;
2281     int n = 1, i, size, index = 0;
2282     int64_t t, *pts;
2283
2284     for (p = kf; *p; p++)
2285         if (*p == ',')
2286             n++;
2287     size = n;
2288     pts = av_malloc(sizeof(*pts) * size);
2289     if (!pts) {
2290         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
2291         exit_program(1);
2292     }
2293
2294     p = kf;
2295     for (i = 0; i < n; i++) {
2296         char *next = strchr(p, ',');
2297
2298         if (next)
2299             *next++ = 0;
2300
2301         if (!memcmp(p, "chapters", 8)) {
2302
2303             AVFormatContext *avf = output_files[ost->file_index]->ctx;
2304             int j;
2305
2306             if (avf->nb_chapters > INT_MAX - size ||
2307                 !(pts = av_realloc_f(pts, size += avf->nb_chapters - 1,
2308                                      sizeof(*pts)))) {
2309                 av_log(NULL, AV_LOG_FATAL,
2310                        "Could not allocate forced key frames array.\n");
2311                 exit_program(1);
2312             }
2313             t = p[8] ? parse_time_or_die("force_key_frames", p + 8, 1) : 0;
2314             t = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2315
2316             for (j = 0; j < avf->nb_chapters; j++) {
2317                 AVChapter *c = avf->chapters[j];
2318                 av_assert1(index < size);
2319                 pts[index++] = av_rescale_q(c->start, c->time_base,
2320                                             avctx->time_base) + t;
2321             }
2322
2323         } else {
2324
2325             t = parse_time_or_die("force_key_frames", p, 1);
2326             av_assert1(index < size);
2327             pts[index++] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
2328
2329         }
2330
2331         p = next;
2332     }
2333
2334     av_assert0(index == size);
2335     qsort(pts, size, sizeof(*pts), compare_int64);
2336     ost->forced_kf_count = size;
2337     ost->forced_kf_pts   = pts;
2338 }
2339
2340 static void report_new_stream(int input_index, AVPacket *pkt)
2341 {
2342     InputFile *file = input_files[input_index];
2343     AVStream *st = file->ctx->streams[pkt->stream_index];
2344
2345     if (pkt->stream_index < file->nb_streams_warn)
2346         return;
2347     av_log(file->ctx, AV_LOG_WARNING,
2348            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
2349            av_get_media_type_string(st->codec->codec_type),
2350            input_index, pkt->stream_index,
2351            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
2352     file->nb_streams_warn = pkt->stream_index + 1;
2353 }
2354
2355 static int transcode_init(void)
2356 {
2357     int ret = 0, i, j, k;
2358     AVFormatContext *oc;
2359     AVCodecContext *codec;
2360     OutputStream *ost;
2361     InputStream *ist;
2362     char error[1024];
2363     int want_sdp = 1;
2364
2365     for (i = 0; i < nb_filtergraphs; i++) {
2366         FilterGraph *fg = filtergraphs[i];
2367         for (j = 0; j < fg->nb_outputs; j++) {
2368             OutputFilter *ofilter = fg->outputs[j];
2369             if (!ofilter->ost || ofilter->ost->source_index >= 0)
2370                 continue;
2371             if (fg->nb_inputs != 1)
2372                 continue;
2373             for (k = nb_input_streams-1; k >= 0 ; k--)
2374                 if (fg->inputs[0]->ist == input_streams[k])
2375                     break;
2376             ofilter->ost->source_index = k;
2377         }
2378     }
2379
2380     /* init framerate emulation */
2381     for (i = 0; i < nb_input_files; i++) {
2382         InputFile *ifile = input_files[i];
2383         if (ifile->rate_emu)
2384             for (j = 0; j < ifile->nb_streams; j++)
2385                 input_streams[j + ifile->ist_index]->start = av_gettime();
2386     }
2387
2388     /* output stream init */
2389     for (i = 0; i < nb_output_files; i++) {
2390         oc = output_files[i]->ctx;
2391         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
2392             av_dump_format(oc, i, oc->filename, 1);
2393             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
2394             return AVERROR(EINVAL);
2395         }
2396     }
2397
2398     /* init complex filtergraphs */
2399     for (i = 0; i < nb_filtergraphs; i++)
2400         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
2401             return ret;
2402
2403     /* for each output stream, we compute the right encoding parameters */
2404     for (i = 0; i < nb_output_streams; i++) {
2405         AVCodecContext *icodec = NULL;
2406         ost = output_streams[i];
2407         oc  = output_files[ost->file_index]->ctx;
2408         ist = get_input_stream(ost);
2409
2410         if (ost->attachment_filename)
2411             continue;
2412
2413         codec  = ost->st->codec;
2414
2415         if (ist) {
2416             icodec = ist->st->codec;
2417
2418             ost->st->disposition          = ist->st->disposition;
2419             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
2420             codec->chroma_sample_location = icodec->chroma_sample_location;
2421         } else {
2422             for (j=0; j<oc->nb_streams; j++) {
2423                 AVStream *st = oc->streams[j];
2424                 if (st != ost->st && st->codec->codec_type == codec->codec_type)
2425                     break;
2426             }
2427             if (j == oc->nb_streams)
2428                 if (codec->codec_type == AVMEDIA_TYPE_AUDIO || codec->codec_type == AVMEDIA_TYPE_VIDEO)
2429                     ost->st->disposition = AV_DISPOSITION_DEFAULT;
2430         }
2431
2432         if (ost->stream_copy) {
2433             AVRational sar;
2434             uint64_t extra_size;
2435
2436             av_assert0(ist && !ost->filter);
2437
2438             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2439
2440             if (extra_size > INT_MAX) {
2441                 return AVERROR(EINVAL);
2442             }
2443
2444             /* if stream_copy is selected, no need to decode or encode */
2445             codec->codec_id   = icodec->codec_id;
2446             codec->codec_type = icodec->codec_type;
2447
2448             if (!codec->codec_tag) {
2449                 unsigned int codec_tag;
2450                 if (!oc->oformat->codec_tag ||
2451                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2452                      !av_codec_get_tag2(oc->oformat->codec_tag, icodec->codec_id, &codec_tag))
2453                     codec->codec_tag = icodec->codec_tag;
2454             }
2455
2456             codec->bit_rate       = icodec->bit_rate;
2457             codec->rc_max_rate    = icodec->rc_max_rate;
2458             codec->rc_buffer_size = icodec->rc_buffer_size;
2459             codec->field_order    = icodec->field_order;
2460             codec->extradata      = av_mallocz(extra_size);
2461             if (!codec->extradata) {
2462                 return AVERROR(ENOMEM);
2463             }
2464             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2465             codec->extradata_size= icodec->extradata_size;
2466             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2467
2468             codec->time_base = ist->st->time_base;
2469             /*
2470              * Avi is a special case here because it supports variable fps but
2471              * having the fps and timebase differe significantly adds quite some
2472              * overhead
2473              */
2474             if(!strcmp(oc->oformat->name, "avi")) {
2475                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2476                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2477                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2478                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2479                      || copy_tb==2){
2480                     codec->time_base.num = ist->st->r_frame_rate.den;
2481                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2482                     codec->ticks_per_frame = 2;
2483                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2484                                  && av_q2d(ist->st->time_base) < 1.0/500
2485                     || copy_tb==0){
2486                     codec->time_base = icodec->time_base;
2487                     codec->time_base.num *= icodec->ticks_per_frame;
2488                     codec->time_base.den *= 2;
2489                     codec->ticks_per_frame = 2;
2490                 }
2491             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2492                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2493                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2494                       && strcmp(oc->oformat->name, "f4v")
2495             ) {
2496                 if(   copy_tb<0 && icodec->time_base.den
2497                                 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2498                                 && av_q2d(ist->st->time_base) < 1.0/500
2499                    || copy_tb==0){
2500                     codec->time_base = icodec->time_base;
2501                     codec->time_base.num *= icodec->ticks_per_frame;
2502                 }
2503             }
2504             if (   codec->codec_tag == AV_RL32("tmcd")
2505                 && icodec->time_base.num < icodec->time_base.den
2506                 && icodec->time_base.num > 0
2507                 && 121LL*icodec->time_base.num > icodec->time_base.den) {
2508                 codec->time_base = icodec->time_base;
2509             }
2510
2511             if (ist && !ost->frame_rate.num)
2512                 ost->frame_rate = ist->framerate;
2513             if(ost->frame_rate.num)
2514                 codec->time_base = av_inv_q(ost->frame_rate);
2515
2516             av_reduce(&codec->time_base.num, &codec->time_base.den,
2517                         codec->time_base.num, codec->time_base.den, INT_MAX);
2518
2519             ost->parser = av_parser_init(codec->codec_id);
2520
2521             switch (codec->codec_type) {
2522             case AVMEDIA_TYPE_AUDIO:
2523                 if (audio_volume != 256) {
2524                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2525                     exit_program(1);
2526                 }
2527                 codec->channel_layout     = icodec->channel_layout;
2528                 codec->sample_rate        = icodec->sample_rate;
2529                 codec->channels           = icodec->channels;
2530                 codec->frame_size         = icodec->frame_size;
2531                 codec->audio_service_type = icodec->audio_service_type;
2532                 codec->block_align        = icodec->block_align;
2533                 codec->delay              = icodec->delay;
2534                 if((codec->block_align == 1 || codec->block_align == 1152 || codec->block_align == 576) && codec->codec_id == AV_CODEC_ID_MP3)
2535                     codec->block_align= 0;
2536                 if(codec->codec_id == AV_CODEC_ID_AC3)
2537                     codec->block_align= 0;
2538                 break;
2539             case AVMEDIA_TYPE_VIDEO:
2540                 codec->pix_fmt            = icodec->pix_fmt;
2541                 codec->width              = icodec->width;
2542                 codec->height             = icodec->height;
2543                 codec->has_b_frames       = icodec->has_b_frames;
2544                 if (ost->frame_aspect_ratio.num) { // overridden by the -aspect cli option
2545                     sar =
2546                         av_mul_q(ost->frame_aspect_ratio,
2547                                  (AVRational){ codec->height, codec->width });
2548                     av_log(NULL, AV_LOG_WARNING, "Overriding aspect ratio "
2549                            "with stream copy may produce invalid files\n");
2550                 }
2551                 else if (ist->st->sample_aspect_ratio.num)
2552                     sar = ist->st->sample_aspect_ratio;
2553                 else
2554                     sar = icodec->sample_aspect_ratio;
2555                 ost->st->sample_aspect_ratio = codec->sample_aspect_ratio = sar;
2556                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2557                 break;
2558             case AVMEDIA_TYPE_SUBTITLE:
2559                 codec->width  = icodec->width;
2560                 codec->height = icodec->height;
2561                 break;
2562             case AVMEDIA_TYPE_DATA:
2563             case AVMEDIA_TYPE_ATTACHMENT:
2564                 break;
2565             default:
2566                 abort();
2567             }
2568         } else {
2569             if (!ost->enc)
2570                 ost->enc = avcodec_find_encoder(codec->codec_id);
2571             if (!ost->enc) {
2572                 /* should only happen when a default codec is not present. */
2573                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2574                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2575                 ret = AVERROR(EINVAL);
2576                 goto dump_format;
2577             }
2578
2579             if (ist)
2580                 ist->decoding_needed++;
2581             ost->encoding_needed = 1;
2582
2583             if (!ost->filter &&
2584                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2585                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2586                     FilterGraph *fg;
2587                     fg = init_simple_filtergraph(ist, ost);
2588                     if (configure_filtergraph(fg)) {
2589                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2590                         exit_program(1);
2591                     }
2592             }
2593
2594             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2595                 if (ost->filter && !ost->frame_rate.num)
2596                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2597                 if (ist && !ost->frame_rate.num)
2598                     ost->frame_rate = ist->framerate;
2599                 if (ist && !ost->frame_rate.num)
2600                     ost->frame_rate = ist->st->r_frame_rate;
2601                 if (ist && !ost->frame_rate.num) {
2602                     ost->frame_rate = (AVRational){25, 1};
2603                     av_log(NULL, AV_LOG_WARNING,
2604                            "No information "
2605                            "about the input framerate is available. Falling "
2606                            "back to a default value of 25fps for output stream #%d:%d. Use the -r option "
2607                            "if you want a different framerate.\n",
2608                            ost->file_index, ost->index);
2609                 }
2610 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2611                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2612                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2613                     ost->frame_rate = ost->enc->supported_framerates[idx];
2614                 }
2615                 if (codec->codec_id == AV_CODEC_ID_MPEG4) {
2616                     av_reduce(&ost->frame_rate.num, &ost->frame_rate.den,
2617                               ost->frame_rate.num, ost->frame_rate.den, 65535);
2618                 }
2619             }
2620
2621             switch (codec->codec_type) {
2622             case AVMEDIA_TYPE_AUDIO:
2623                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2624                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2625                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2626                 codec->channels       = avfilter_link_get_channels(ost->filter->filter->inputs[0]);
2627                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2628                 break;
2629             case AVMEDIA_TYPE_VIDEO:
2630                 codec->time_base = av_inv_q(ost->frame_rate);
2631                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2632                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2633                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2634                    && (video_sync_method == VSYNC_CFR || video_sync_method == VSYNC_VSCFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2635                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2636                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2637                 }
2638                 for (j = 0; j < ost->forced_kf_count; j++)
2639                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2640                                                          AV_TIME_BASE_Q,
2641                                                          codec->time_base);
2642
2643                 codec->width  = ost->filter->filter->inputs[0]->w;
2644                 codec->height = ost->filter->filter->inputs[0]->h;
2645                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2646                     ost->frame_aspect_ratio.num ? // overridden by the -aspect cli option
2647                     av_mul_q(ost->frame_aspect_ratio, (AVRational){ codec->height, codec->width }) :
2648                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2649                 if (!strncmp(ost->enc->name, "libx264", 7) &&
2650                     codec->pix_fmt == AV_PIX_FMT_NONE &&
2651                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2652                     av_log(NULL, AV_LOG_WARNING,
2653                            "No pixel format specified, %s for H.264 encoding chosen.\n"
2654                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2655                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2656                 if (!strncmp(ost->enc->name, "mpeg2video", 10) &&
2657                     codec->pix_fmt == AV_PIX_FMT_NONE &&
2658                     ost->filter->filter->inputs[0]->format != AV_PIX_FMT_YUV420P)
2659                     av_log(NULL, AV_LOG_WARNING,
2660                            "No pixel format specified, %s for MPEG-2 encoding chosen.\n"
2661                            "Use -pix_fmt yuv420p for compatibility with outdated media players.\n",
2662                            av_get_pix_fmt_name(ost->filter->filter->inputs[0]->format));
2663                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2664
2665                 if (!icodec ||
2666                     codec->width   != icodec->width  ||
2667                     codec->height  != icodec->height ||
2668                     codec->pix_fmt != icodec->pix_fmt) {
2669                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2670                 }
2671
2672                 if (ost->forced_keyframes) {
2673                     if (!strncmp(ost->forced_keyframes, "expr:", 5)) {
2674                         ret = av_expr_parse(&ost->forced_keyframes_pexpr, ost->forced_keyframes+5,
2675                                             forced_keyframes_const_names, NULL, NULL, NULL, NULL, 0, NULL);
2676                         if (ret < 0) {
2677                             av_log(NULL, AV_LOG_ERROR,
2678                                    "Invalid force_key_frames expression '%s'\n", ost->forced_keyframes+5);
2679                             return ret;
2680                         }
2681                         ost->forced_keyframes_expr_const_values[FKF_N] = 0;
2682                         ost->forced_keyframes_expr_const_values[FKF_N_FORCED] = 0;
2683                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_N] = NAN;
2684                         ost->forced_keyframes_expr_const_values[FKF_PREV_FORCED_T] = NAN;
2685                     } else {
2686                         parse_forced_key_frames(ost->forced_keyframes, ost, ost->st->codec);
2687                     }
2688                 }
2689                 break;
2690             case AVMEDIA_TYPE_SUBTITLE:
2691                 codec->time_base = (AVRational){1, 1000};
2692                 if (!codec->width) {
2693                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2694                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2695                 }
2696                 break;
2697             default:
2698                 abort();
2699                 break;
2700             }
2701             /* two pass mode */
2702             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2703                 char logfilename[1024];
2704                 FILE *f;
2705
2706                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2707                          ost->logfile_prefix ? ost->logfile_prefix :
2708                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2709                          i);
2710                 if (!strcmp(ost->enc->name, "libx264")) {
2711                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2712                 } else {
2713                     if (codec->flags & CODEC_FLAG_PASS2) {
2714                         char  *logbuffer;
2715                         size_t logbuffer_size;
2716                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2717                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2718                                    logfilename);
2719                             exit_program(1);
2720                         }
2721                         codec->stats_in = logbuffer;
2722                     }
2723                     if (codec->flags & CODEC_FLAG_PASS1) {
2724                         f = av_fopen_utf8(logfilename, "wb");
2725                         if (!f) {
2726                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2727                                 logfilename, strerror(errno));
2728                             exit_program(1);
2729                         }
2730                         ost->logfile = f;
2731                     }
2732                 }
2733             }
2734         }
2735     }
2736
2737     /* open each encoder */
2738     for (i = 0; i < nb_output_streams; i++) {
2739         ost = output_streams[i];
2740         if (ost->encoding_needed) {
2741             AVCodec      *codec = ost->enc;
2742             AVCodecContext *dec = NULL;
2743
2744             if ((ist = get_input_stream(ost)))
2745                 dec = ist->st->codec;
2746             if (dec && dec->subtitle_header) {
2747                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2748                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2749                 if (!ost->st->codec->subtitle_header) {
2750                     ret = AVERROR(ENOMEM);
2751                     goto dump_format;
2752                 }
2753                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2754                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2755             }
2756             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2757                 av_dict_set(&ost->opts, "threads", "auto", 0);
2758             if ((ret = avcodec_open2(ost->st->codec, codec, &ost->opts)) < 0) {
2759                 if (ret == AVERROR_EXPERIMENTAL)
2760                     abort_codec_experimental(codec, 1);
2761                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2762                         ost->file_index, ost->index);
2763                 goto dump_format;
2764             }
2765             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2766                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2767                 av_buffersink_set_frame_size(ost->filter->filter,
2768                                              ost->st->codec->frame_size);
2769             assert_avoptions(ost->opts);
2770             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2771                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2772                                              " It takes bits/s as argument, not kbits/s\n");
2773         } else {
2774             av_opt_set_dict(ost->st->codec, &ost->opts);
2775         }
2776     }
2777
2778     /* init input streams */
2779     for (i = 0; i < nb_input_streams; i++)
2780         if ((ret = init_input_stream(i, error, sizeof(error))) < 0) {
2781             for (i = 0; i < nb_output_streams; i++) {
2782                 ost = output_streams[i];
2783                 avcodec_close(ost->st->codec);
2784             }
2785             goto dump_format;
2786         }
2787
2788     /* discard unused programs */
2789     for (i = 0; i < nb_input_files; i++) {
2790         InputFile *ifile = input_files[i];
2791         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2792             AVProgram *p = ifile->ctx->programs[j];
2793             int discard  = AVDISCARD_ALL;
2794
2795             for (k = 0; k < p->nb_stream_indexes; k++)
2796                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2797                     discard = AVDISCARD_DEFAULT;
2798                     break;
2799                 }
2800             p->discard = discard;
2801         }
2802     }
2803
2804     /* open files and write file headers */
2805     for (i = 0; i < nb_output_files; i++) {
2806         oc = output_files[i]->ctx;
2807         oc->interrupt_callback = int_cb;
2808         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2809             snprintf(error, sizeof(error),
2810                      "Could not write header for output file #%d "
2811                      "(incorrect codec parameters ?): %s",
2812                      i, av_err2str(ret));
2813             ret = AVERROR(EINVAL);
2814             goto dump_format;
2815         }
2816 //         assert_avoptions(output_files[i]->opts);
2817         if (strcmp(oc->oformat->name, "rtp")) {
2818             want_sdp = 0;
2819         }
2820     }
2821
2822  dump_format:
2823     /* dump the file output parameters - cannot be done before in case
2824        of stream copy */
2825     for (i = 0; i < nb_output_files; i++) {
2826         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2827     }
2828
2829     /* dump the stream mapping */
2830     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2831     for (i = 0; i < nb_input_streams; i++) {
2832         ist = input_streams[i];
2833
2834         for (j = 0; j < ist->nb_filters; j++) {
2835             if (ist->filters[j]->graph->graph_desc) {
2836                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2837                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2838                        ist->filters[j]->name);
2839                 if (nb_filtergraphs > 1)
2840                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2841                 av_log(NULL, AV_LOG_INFO, "\n");
2842             }
2843         }
2844     }
2845
2846     for (i = 0; i < nb_output_streams; i++) {
2847         ost = output_streams[i];
2848
2849         if (ost->attachment_filename) {
2850             /* an attached file */
2851             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2852                    ost->attachment_filename, ost->file_index, ost->index);
2853             continue;
2854         }
2855
2856         if (ost->filter && ost->filter->graph->graph_desc) {
2857             /* output from a complex graph */
2858             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2859             if (nb_filtergraphs > 1)
2860                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2861
2862             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2863                    ost->index, ost->enc ? ost->enc->name : "?");
2864             continue;
2865         }
2866
2867         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2868                input_streams[ost->source_index]->file_index,
2869                input_streams[ost->source_index]->st->index,
2870                ost->file_index,
2871                ost->index);
2872         if (ost->sync_ist != input_streams[ost->source_index])
2873             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2874                    ost->sync_ist->file_index,
2875                    ost->sync_ist->st->index);
2876         if (ost->stream_copy)
2877             av_log(NULL, AV_LOG_INFO, " (copy)");
2878         else
2879             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2880                    input_streams[ost->source_index]->dec->name : "?",
2881                    ost->enc ? ost->enc->name : "?");
2882         av_log(NULL, AV_LOG_INFO, "\n");
2883     }
2884
2885     if (ret) {
2886         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2887         return ret;
2888     }
2889
2890     if (want_sdp) {
2891         print_sdp();
2892     }
2893
2894     transcode_init_done = 1;
2895
2896     return 0;
2897 }
2898
2899 /* Return 1 if there remain streams where more output is wanted, 0 otherwise. */
2900 static int need_output(void)
2901 {
2902     int i;
2903
2904     for (i = 0; i < nb_output_streams; i++) {
2905         OutputStream *ost    = output_streams[i];
2906         OutputFile *of       = output_files[ost->file_index];
2907         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2908
2909         if (ost->finished ||
2910             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2911             continue;
2912         if (ost->frame_number >= ost->max_frames) {
2913             int j;
2914             for (j = 0; j < of->ctx->nb_streams; j++)
2915                 close_output_stream(output_streams[of->ost_index + j]);
2916             continue;
2917         }
2918
2919         return 1;
2920     }
2921
2922     return 0;
2923 }
2924
2925 /**
2926  * Select the output stream to process.
2927  *
2928  * @return  selected output stream, or NULL if none available
2929  */
2930 static OutputStream *choose_output(void)
2931 {
2932     int i;
2933     int64_t opts_min = INT64_MAX;
2934     OutputStream *ost_min = NULL;
2935
2936     for (i = 0; i < nb_output_streams; i++) {
2937         OutputStream *ost = output_streams[i];
2938         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2939                                     AV_TIME_BASE_Q);
2940         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2941             opts_min = opts;
2942             ost_min  = ost;
2943         }
2944     }
2945     return ost_min;
2946 }
2947
2948 static int check_keyboard_interaction(int64_t cur_time)
2949 {
2950     int i, ret, key;
2951     static int64_t last_time;
2952     if (received_nb_signals)
2953         return AVERROR_EXIT;
2954     /* read_key() returns 0 on EOF */
2955     if(cur_time - last_time >= 100000 && !run_as_daemon){
2956         key =  read_key();
2957         last_time = cur_time;
2958     }else
2959         key = -1;
2960     if (key == 'q')
2961         return AVERROR_EXIT;
2962     if (key == '+') av_log_set_level(av_log_get_level()+10);
2963     if (key == '-') av_log_set_level(av_log_get_level()-10);
2964     if (key == 's') qp_hist     ^= 1;
2965     if (key == 'h'){
2966         if (do_hex_dump){
2967             do_hex_dump = do_pkt_dump = 0;
2968         } else if(do_pkt_dump){
2969             do_hex_dump = 1;
2970         } else
2971             do_pkt_dump = 1;
2972         av_log_set_level(AV_LOG_DEBUG);
2973     }
2974     if (key == 'c' || key == 'C'){
2975         char buf[4096], target[64], command[256], arg[256] = {0};
2976         double time;
2977         int k, n = 0;
2978         fprintf(stderr, "\nEnter command: <target>|all <time>|-1 <command>[ <argument>]\n");
2979         i = 0;
2980         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2981             if (k > 0)
2982                 buf[i++] = k;
2983         buf[i] = 0;
2984         if (k > 0 &&
2985             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2986             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2987                    target, time, command, arg);
2988             for (i = 0; i < nb_filtergraphs; i++) {
2989                 FilterGraph *fg = filtergraphs[i];
2990                 if (fg->graph) {
2991                     if (time < 0) {
2992                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2993                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2994                         fprintf(stderr, "Command reply for stream %d: ret:%d res:\n%s", i, ret, buf);
2995                     } else if (key == 'c') {
2996                         fprintf(stderr, "Queing commands only on filters supporting the specific command is unsupported\n");
2997                         ret = AVERROR_PATCHWELCOME;
2998                     } else {
2999                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
3000                     }
3001                 }
3002             }
3003         } else {
3004             av_log(NULL, AV_LOG_ERROR,
3005                    "Parse error, at least 3 arguments were expected, "
3006                    "only %d given in string '%s'\n", n, buf);
3007         }
3008     }
3009     if (key == 'd' || key == 'D'){
3010         int debug=0;
3011         if(key == 'D') {
3012             debug = input_streams[0]->st->codec->debug<<1;
3013             if(!debug) debug = 1;
3014             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
3015                 debug += debug;
3016         }else
3017             if(scanf("%d", &debug)!=1)
3018                 fprintf(stderr,"error parsing debug value\n");
3019         for(i=0;i<nb_input_streams;i++) {
3020             input_streams[i]->st->codec->debug = debug;
3021         }
3022         for(i=0;i<nb_output_streams;i++) {
3023             OutputStream *ost = output_streams[i];
3024             ost->st->codec->debug = debug;
3025         }
3026         if(debug) av_log_set_level(AV_LOG_DEBUG);
3027         fprintf(stderr,"debug=%d\n", debug);
3028     }
3029     if (key == '?'){
3030         fprintf(stderr, "key    function\n"
3031                         "?      show this help\n"
3032                         "+      increase verbosity\n"
3033                         "-      decrease verbosity\n"
3034                         "c      Send command to first matching filter supporting it\n"
3035                         "C      Send/Que command to all matching filters\n"
3036                         "D      cycle through available debug modes\n"
3037                         "h      dump packets/hex press to cycle through the 3 states\n"
3038                         "q      quit\n"
3039                         "s      Show QP histogram\n"
3040         );
3041     }
3042     return 0;
3043 }
3044
3045 #if HAVE_PTHREADS
3046 static void *input_thread(void *arg)
3047 {
3048     InputFile *f = arg;
3049     int ret = 0;
3050
3051     while (!transcoding_finished && ret >= 0) {
3052         AVPacket pkt;
3053         ret = av_read_frame(f->ctx, &pkt);
3054
3055         if (ret == AVERROR(EAGAIN)) {
3056             av_usleep(10000);
3057             ret = 0;
3058             continue;
3059         } else if (ret < 0)
3060             break;
3061
3062         pthread_mutex_lock(&f->fifo_lock);
3063         while (!av_fifo_space(f->fifo))
3064             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
3065
3066         av_dup_packet(&pkt);
3067         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
3068         pthread_cond_signal(&f->fifo_cond);
3069
3070         pthread_mutex_unlock(&f->fifo_lock);
3071     }
3072
3073     pthread_mutex_lock(&f->fifo_lock);
3074     f->finished = 1;
3075     pthread_cond_signal(&f->fifo_cond);
3076     pthread_mutex_unlock(&f->fifo_lock);
3077     return NULL;
3078 }
3079
3080 static void free_input_threads(void)
3081 {
3082     int i;
3083
3084     if (nb_input_files == 1)
3085         return;
3086
3087     transcoding_finished = 1;
3088
3089     for (i = 0; i < nb_input_files; i++) {
3090         InputFile *f = input_files[i];
3091         AVPacket pkt;
3092
3093         if (!f->fifo || f->joined)
3094             continue;
3095
3096         pthread_mutex_lock(&f->fifo_lock);
3097         while (av_fifo_size(f->fifo)) {
3098             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
3099             av_free_packet(&pkt);
3100         }
3101         pthread_cond_signal(&f->fifo_cond);
3102         pthread_mutex_unlock(&f->fifo_lock);
3103
3104         pthread_join(f->thread, NULL);
3105         f->joined = 1;
3106
3107         while (av_fifo_size(f->fifo)) {
3108             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
3109             av_free_packet(&pkt);
3110         }
3111         av_fifo_free(f->fifo);
3112     }
3113 }
3114
3115 static int init_input_threads(void)
3116 {
3117     int i, ret;
3118
3119     if (nb_input_files == 1)
3120         return 0;
3121
3122     for (i = 0; i < nb_input_files; i++) {
3123         InputFile *f = input_files[i];
3124
3125         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
3126             return AVERROR(ENOMEM);
3127
3128         if (f->ctx->pb ? !f->ctx->pb->seekable :
3129             strcmp(f->ctx->iformat->name, "lavfi"))
3130             f->non_blocking = 1;
3131
3132         pthread_mutex_init(&f->fifo_lock, NULL);
3133         pthread_cond_init (&f->fifo_cond, NULL);
3134
3135         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
3136             return AVERROR(ret);
3137     }
3138     return 0;
3139 }
3140
3141 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
3142 {
3143     int ret = 0;
3144
3145     pthread_mutex_lock(&f->fifo_lock);
3146
3147     while (1) {
3148     if (av_fifo_size(f->fifo)) {
3149         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
3150         pthread_cond_signal(&f->fifo_cond);
3151         break;
3152     } else {
3153         if (f->finished) {
3154             ret = AVERROR_EOF;
3155             break;
3156         }
3157         if (f->non_blocking) {
3158             ret = AVERROR(EAGAIN);
3159             break;
3160         }
3161         pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
3162     }
3163     }
3164
3165     pthread_mutex_unlock(&f->fifo_lock);
3166
3167     return ret;
3168 }
3169 #endif
3170
3171 static int get_input_packet(InputFile *f, AVPacket *pkt)
3172 {
3173     if (f->rate_emu) {
3174         int i;
3175         for (i = 0; i < f->nb_streams; i++) {
3176             InputStream *ist = input_streams[f->ist_index + i];
3177             int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
3178             int64_t now = av_gettime() - ist->start;
3179             if (pts > now)
3180                 return AVERROR(EAGAIN);
3181         }
3182     }
3183
3184 #if HAVE_PTHREADS
3185     if (nb_input_files > 1)
3186         return get_input_packet_mt(f, pkt);
3187 #endif
3188     return av_read_frame(f->ctx, pkt);
3189 }
3190
3191 static int got_eagain(void)
3192 {
3193     int i;
3194     for (i = 0; i < nb_output_streams; i++)
3195         if (output_streams[i]->unavailable)
3196             return 1;
3197     return 0;
3198 }
3199
3200 static void reset_eagain(void)
3201 {
3202     int i;
3203     for (i = 0; i < nb_input_files; i++)
3204         input_files[i]->eagain = 0;
3205     for (i = 0; i < nb_output_streams; i++)
3206         output_streams[i]->unavailable = 0;
3207 }
3208
3209 /*
3210  * Return
3211  * - 0 -- one packet was read and processed
3212  * - AVERROR(EAGAIN) -- no packets were available for selected file,
3213  *   this function should be called again
3214  * - AVERROR_EOF -- this function should not be called again
3215  */
3216 static int process_input(int file_index)
3217 {
3218     InputFile *ifile = input_files[file_index];
3219     AVFormatContext *is;
3220     InputStream *ist;
3221     AVPacket pkt;
3222     int ret, i, j;
3223
3224     is  = ifile->ctx;
3225     ret = get_input_packet(ifile, &pkt);
3226
3227     if (ret == AVERROR(EAGAIN)) {
3228         ifile->eagain = 1;
3229         return ret;
3230     }
3231     if (ret < 0) {
3232         if (ret != AVERROR_EOF) {
3233             print_error(is->filename, ret);
3234             if (exit_on_error)
3235                 exit_program(1);
3236         }
3237         ifile->eof_reached = 1;
3238
3239         for (i = 0; i < ifile->nb_streams; i++) {
3240             ist = input_streams[ifile->ist_index + i];
3241             if (ist->decoding_needed)
3242                 output_packet(ist, NULL);
3243
3244             /* mark all outputs that don't go through lavfi as finished */
3245             for (j = 0; j < nb_output_streams; j++) {
3246                 OutputStream *ost = output_streams[j];
3247
3248                 if (ost->source_index == ifile->ist_index + i &&
3249                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
3250                     close_output_stream(ost);
3251             }
3252         }
3253
3254         return AVERROR(EAGAIN);
3255     }
3256
3257     reset_eagain();
3258
3259     if (do_pkt_dump) {
3260         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
3261                          is->streams[pkt.stream_index]);
3262     }
3263     /* the following test is needed in case new streams appear
3264        dynamically in stream : we ignore them */
3265     if (pkt.stream_index >= ifile->nb_streams) {
3266         report_new_stream(file_index, &pkt);
3267         goto discard_packet;
3268     }
3269
3270     ist = input_streams[ifile->ist_index + pkt.stream_index];
3271
3272     ist->data_size += pkt.size;
3273     ist->nb_packets++;
3274
3275     if (ist->discard)
3276         goto discard_packet;
3277
3278     if (debug_ts) {
3279         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
3280                "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",
3281                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
3282                av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
3283                av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
3284                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3285                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3286                av_ts2str(input_files[ist->file_index]->ts_offset),
3287                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3288     }
3289
3290     if(!ist->wrap_correction_done && is->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
3291         int64_t stime, stime2;
3292         // Correcting starttime based on the enabled streams
3293         // 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.
3294         //       so we instead do it here as part of discontinuity handling
3295         if (   ist->next_dts == AV_NOPTS_VALUE
3296             && ifile->ts_offset == -is->start_time
3297             && (is->iformat->flags & AVFMT_TS_DISCONT)) {
3298             int64_t new_start_time = INT64_MAX;
3299             for (i=0; i<is->nb_streams; i++) {
3300                 AVStream *st = is->streams[i];
3301                 if(st->discard == AVDISCARD_ALL || st->start_time == AV_NOPTS_VALUE)
3302                     continue;
3303                 new_start_time = FFMIN(new_start_time, av_rescale_q(st->start_time, st->time_base, AV_TIME_BASE_Q));
3304             }
3305             if (new_start_time > is->start_time) {
3306                 av_log(is, AV_LOG_VERBOSE, "Correcting start time by %"PRId64"\n", new_start_time - is->start_time);
3307                 ifile->ts_offset = -new_start_time;
3308             }
3309         }
3310
3311         stime = av_rescale_q(is->start_time, AV_TIME_BASE_Q, ist->st->time_base);
3312         stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
3313         ist->wrap_correction_done = 1;
3314
3315         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
3316             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
3317             ist->wrap_correction_done = 0;
3318         }
3319         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
3320             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
3321             ist->wrap_correction_done = 0;
3322         }
3323     }
3324
3325     /* add the stream-global side data to the first packet */
3326     if (ist->nb_packets == 1)
3327         if (ist->st->nb_side_data)
3328             av_packet_split_side_data(&pkt);
3329         for (i = 0; i < ist->st->nb_side_data; i++) {
3330             AVPacketSideData *src_sd = &ist->st->side_data[i];
3331             uint8_t *dst_data;
3332
3333             if (av_packet_get_side_data(&pkt, src_sd->type, NULL))
3334                 continue;
3335
3336             dst_data = av_packet_new_side_data(&pkt, src_sd->type, src_sd->size);
3337             if (!dst_data)
3338                 exit_program(1);
3339
3340             memcpy(dst_data, src_sd->data, src_sd->size);
3341         }
3342
3343     if (pkt.dts != AV_NOPTS_VALUE)
3344         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3345     if (pkt.pts != AV_NOPTS_VALUE)
3346         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
3347
3348     if (pkt.pts != AV_NOPTS_VALUE)
3349         pkt.pts *= ist->ts_scale;
3350     if (pkt.dts != AV_NOPTS_VALUE)
3351         pkt.dts *= ist->ts_scale;
3352
3353     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts == AV_NOPTS_VALUE && !copy_ts
3354         && (is->iformat->flags & AVFMT_TS_DISCONT) && ifile->last_ts != AV_NOPTS_VALUE) {
3355         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3356         int64_t delta   = pkt_dts - ifile->last_ts;
3357         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3358             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3359                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)){
3360             ifile->ts_offset -= delta;
3361             av_log(NULL, AV_LOG_DEBUG,
3362                    "Inter stream timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3363                    delta, ifile->ts_offset);
3364             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3365             if (pkt.pts != AV_NOPTS_VALUE)
3366                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3367         }
3368     }
3369
3370     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
3371         !copy_ts) {
3372         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3373         int64_t delta   = pkt_dts - ist->next_dts;
3374         if (is->iformat->flags & AVFMT_TS_DISCONT) {
3375             if (delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
3376                 (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
3377                  ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
3378                 pkt_dts + AV_TIME_BASE/10 < FFMAX(ist->pts, ist->dts)) {
3379                 ifile->ts_offset -= delta;
3380                 av_log(NULL, AV_LOG_DEBUG,
3381                        "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
3382                        delta, ifile->ts_offset);
3383                 pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3384                 if (pkt.pts != AV_NOPTS_VALUE)
3385                     pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
3386             }
3387         } else {
3388             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3389                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)) {
3390                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
3391                 pkt.dts = AV_NOPTS_VALUE;
3392             }
3393             if (pkt.pts != AV_NOPTS_VALUE){
3394                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
3395                 delta   = pkt_pts - ist->next_dts;
3396                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
3397                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)) {
3398                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
3399                     pkt.pts = AV_NOPTS_VALUE;
3400                 }
3401             }
3402         }
3403     }
3404
3405     if (pkt.dts != AV_NOPTS_VALUE)
3406         ifile->last_ts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
3407
3408     if (debug_ts) {
3409         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",
3410                ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
3411                av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
3412                av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
3413                av_ts2str(input_files[ist->file_index]->ts_offset),
3414                av_ts2timestr(input_files[ist->file_index]->ts_offset, &AV_TIME_BASE_Q));
3415     }
3416
3417     sub2video_heartbeat(ist, pkt.pts);
3418
3419     ret = output_packet(ist, &pkt);
3420     if (ret < 0) {
3421         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
3422                ist->file_index, ist->st->index, av_err2str(ret));
3423         if (exit_on_error)
3424             exit_program(1);
3425     }
3426
3427 discard_packet:
3428     av_free_packet(&pkt);
3429
3430     return 0;
3431 }
3432
3433 /**
3434  * Perform a step of transcoding for the specified filter graph.
3435  *
3436  * @param[in]  graph     filter graph to consider
3437  * @param[out] best_ist  input stream where a frame would allow to continue
3438  * @return  0 for success, <0 for error
3439  */
3440 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
3441 {
3442     int i, ret;
3443     int nb_requests, nb_requests_max = 0;
3444     InputFilter *ifilter;
3445     InputStream *ist;
3446
3447     *best_ist = NULL;
3448     ret = avfilter_graph_request_oldest(graph->graph);
3449     if (ret >= 0)
3450         return reap_filters();
3451
3452     if (ret == AVERROR_EOF) {
3453         ret = reap_filters();
3454         for (i = 0; i < graph->nb_outputs; i++)
3455             close_output_stream(graph->outputs[i]->ost);
3456         return ret;
3457     }
3458     if (ret != AVERROR(EAGAIN))
3459         return ret;
3460
3461     for (i = 0; i < graph->nb_inputs; i++) {
3462         ifilter = graph->inputs[i];
3463         ist = ifilter->ist;
3464         if (input_files[ist->file_index]->eagain ||
3465             input_files[ist->file_index]->eof_reached)
3466             continue;
3467         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
3468         if (nb_requests > nb_requests_max) {
3469             nb_requests_max = nb_requests;
3470             *best_ist = ist;
3471         }
3472     }
3473
3474     if (!*best_ist)
3475         for (i = 0; i < graph->nb_outputs; i++)
3476             graph->outputs[i]->ost->unavailable = 1;
3477
3478     return 0;
3479 }
3480
3481 /**
3482  * Run a single step of transcoding.
3483  *
3484  * @return  0 for success, <0 for error
3485  */
3486 static int transcode_step(void)
3487 {
3488     OutputStream *ost;
3489     InputStream  *ist;
3490     int ret;
3491
3492     ost = choose_output();
3493     if (!ost) {
3494         if (got_eagain()) {
3495             reset_eagain();
3496             av_usleep(10000);
3497             return 0;
3498         }
3499         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
3500         return AVERROR_EOF;
3501     }
3502
3503     if (ost->filter) {
3504         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
3505             return ret;
3506         if (!ist)
3507             return 0;
3508     } else {
3509         av_assert0(ost->source_index >= 0);
3510         ist = input_streams[ost->source_index];
3511     }
3512
3513     ret = process_input(ist->file_index);
3514     if (ret == AVERROR(EAGAIN)) {
3515         if (input_files[ist->file_index]->eagain)
3516             ost->unavailable = 1;
3517         return 0;
3518     }
3519     if (ret < 0)
3520         return ret == AVERROR_EOF ? 0 : ret;
3521
3522     return reap_filters();
3523 }
3524
3525 /*
3526  * The following code is the main loop of the file converter
3527  */
3528 static int transcode(void)
3529 {
3530     int ret, i;
3531     AVFormatContext *os;
3532     OutputStream *ost;
3533     InputStream *ist;
3534     int64_t timer_start;
3535
3536     ret = transcode_init();
3537     if (ret < 0)
3538         goto fail;
3539
3540     if (stdin_interaction) {
3541         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
3542     }
3543
3544     timer_start = av_gettime();
3545
3546 #if HAVE_PTHREADS
3547     if ((ret = init_input_threads()) < 0)
3548         goto fail;
3549 #endif
3550
3551     while (!received_sigterm) {
3552         int64_t cur_time= av_gettime();
3553
3554         /* if 'q' pressed, exits */
3555         if (stdin_interaction)
3556             if (check_keyboard_interaction(cur_time) < 0)
3557                 break;
3558
3559         /* check if there's any stream where output is still needed */
3560         if (!need_output()) {
3561             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
3562             break;
3563         }
3564
3565         ret = transcode_step();
3566         if (ret < 0) {
3567             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
3568                 continue;
3569
3570             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
3571             break;
3572         }
3573
3574         /* dump report by using the output first video and audio streams */
3575         print_report(0, timer_start, cur_time);
3576     }
3577 #if HAVE_PTHREADS
3578     free_input_threads();
3579 #endif
3580
3581     /* at the end of stream, we must flush the decoder buffers */
3582     for (i = 0; i < nb_input_streams; i++) {
3583         ist = input_streams[i];
3584         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
3585             output_packet(ist, NULL);
3586         }
3587     }
3588     flush_encoders();
3589
3590     term_exit();
3591
3592     /* write the trailer if needed and close file */
3593     for (i = 0; i < nb_output_files; i++) {
3594         os = output_files[i]->ctx;
3595         av_write_trailer(os);
3596     }
3597
3598     /* dump report by using the first video and audio streams */
3599     print_report(1, timer_start, av_gettime());
3600
3601     /* close each encoder */
3602     for (i = 0; i < nb_output_streams; i++) {
3603         ost = output_streams[i];
3604         if (ost->encoding_needed) {
3605             av_freep(&ost->st->codec->stats_in);
3606             avcodec_close(ost->st->codec);
3607         }
3608     }
3609
3610     /* close each decoder */
3611     for (i = 0; i < nb_input_streams; i++) {
3612         ist = input_streams[i];
3613         if (ist->decoding_needed) {
3614             avcodec_close(ist->st->codec);
3615             if (ist->hwaccel_uninit)
3616                 ist->hwaccel_uninit(ist->st->codec);
3617         }
3618     }
3619
3620     /* finished ! */
3621     ret = 0;
3622
3623  fail:
3624 #if HAVE_PTHREADS
3625     free_input_threads();
3626 #endif
3627
3628     if (output_streams) {
3629         for (i = 0; i < nb_output_streams; i++) {
3630             ost = output_streams[i];
3631             if (ost) {
3632                 if (ost->stream_copy)
3633                     av_freep(&ost->st->codec->extradata);
3634                 if (ost->logfile) {
3635                     fclose(ost->logfile);
3636                     ost->logfile = NULL;
3637                 }
3638                 av_freep(&ost->st->codec->subtitle_header);
3639                 av_freep(&ost->forced_kf_pts);
3640                 av_freep(&ost->apad);
3641                 av_dict_free(&ost->opts);
3642                 av_dict_free(&ost->swr_opts);
3643                 av_dict_free(&ost->resample_opts);
3644             }
3645         }
3646     }
3647     return ret;
3648 }
3649
3650
3651 static int64_t getutime(void)
3652 {
3653 #if HAVE_GETRUSAGE
3654     struct rusage rusage;
3655
3656     getrusage(RUSAGE_SELF, &rusage);
3657     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3658 #elif HAVE_GETPROCESSTIMES
3659     HANDLE proc;
3660     FILETIME c, e, k, u;
3661     proc = GetCurrentProcess();
3662     GetProcessTimes(proc, &c, &e, &k, &u);
3663     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3664 #else
3665     return av_gettime();
3666 #endif
3667 }
3668
3669 static int64_t getmaxrss(void)
3670 {
3671 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3672     struct rusage rusage;
3673     getrusage(RUSAGE_SELF, &rusage);
3674     return (int64_t)rusage.ru_maxrss * 1024;
3675 #elif HAVE_GETPROCESSMEMORYINFO
3676     HANDLE proc;
3677     PROCESS_MEMORY_COUNTERS memcounters;
3678     proc = GetCurrentProcess();
3679     memcounters.cb = sizeof(memcounters);
3680     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3681     return memcounters.PeakPagefileUsage;
3682 #else
3683     return 0;
3684 #endif
3685 }
3686
3687 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3688 {
3689 }
3690
3691 int main(int argc, char **argv)
3692 {
3693     int ret;
3694     int64_t ti;
3695
3696     register_exit(ffmpeg_cleanup);
3697
3698     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3699
3700     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3701     parse_loglevel(argc, argv, options);
3702
3703     if(argc>1 && !strcmp(argv[1], "-d")){
3704         run_as_daemon=1;
3705         av_log_set_callback(log_callback_null);
3706         argc--;
3707         argv++;
3708     }
3709
3710     avcodec_register_all();
3711 #if CONFIG_AVDEVICE
3712     avdevice_register_all();
3713 #endif
3714     avfilter_register_all();
3715     av_register_all();
3716     avformat_network_init();
3717
3718     show_banner(argc, argv, options);
3719
3720     term_init();
3721
3722     /* parse options and open all input/output files */
3723     ret = ffmpeg_parse_options(argc, argv);
3724     if (ret < 0)
3725         exit_program(1);
3726
3727     if (nb_output_files <= 0 && nb_input_files == 0) {
3728         show_usage();
3729         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3730         exit_program(1);
3731     }
3732
3733     /* file converter / grab */
3734     if (nb_output_files <= 0) {
3735         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3736         exit_program(1);
3737     }
3738
3739 //     if (nb_input_files == 0) {
3740 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3741 //         exit_program(1);
3742 //     }
3743
3744     current_time = ti = getutime();
3745     if (transcode() < 0)
3746         exit_program(1);
3747     ti = getutime() - ti;
3748     if (do_benchmark) {
3749         printf("bench: utime=%0.3fs\n", ti / 1000000.0);
3750     }
3751     av_log(NULL, AV_LOG_DEBUG, "%"PRIu64" frames successfully decoded, %"PRIu64" decoding errors\n",
3752            decode_error_stat[0], decode_error_stat[1]);
3753     if ((decode_error_stat[0] + decode_error_stat[1]) * max_error_rate < decode_error_stat[1])
3754         exit_program(69);
3755
3756     exit_program(received_nb_signals ? 255 : main_return_code);
3757     return main_return_code;
3758 }