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

   1 /*
   2  * Copyright (c) 2000-2003 Fabrice Bellard
   3  *
   4  * This file is part of FFmpeg.
   5  *
   6  * FFmpeg is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * FFmpeg is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with FFmpeg; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
  19  */
  20
  21 /**
  22  * @file
  23  * multimedia converter based on the FFmpeg libraries
  24  */
  25
  26 #include "config.h"
  27 #include <ctype.h>
  28 #include <string.h>
  29 #include <math.h>
  30 #include <stdlib.h>
  31 #include <errno.h>
  32 #include <limits.h>
  33 #if HAVE_ISATTY
  34 #if HAVE_IO_H
  35 #include <io.h>
  36 #endif
  37 #if HAVE_UNISTD_H
  38 #include <unistd.h>
  39 #endif
  40 #endif
  41 #include "libavformat/avformat.h"
  42 #include "libavdevice/avdevice.h"
  43 #include "libswscale/swscale.h"
  44 #include "libswresample/swresample.h"
  45 #include "libavutil/opt.h"
  46 #include "libavutil/audioconvert.h"
  47 #include "libavutil/parseutils.h"
  48 #include "libavutil/samplefmt.h"
  49 #include "libavutil/colorspace.h"
  50 #include "libavutil/fifo.h"
  51 #include "libavutil/intreadwrite.h"
  52 #include "libavutil/dict.h"
  53 #include "libavutil/mathematics.h"
  54 #include "libavutil/pixdesc.h"
  55 #include "libavutil/avstring.h"
  56 #include "libavutil/libm.h"
  57 #include "libavutil/imgutils.h"
  58 #include "libavutil/timestamp.h"
  59 #include "libavutil/bprint.h"
  60 #include "libavutil/time.h"
  61 #include "libavformat/os_support.h"
  62
  63 #include "libavformat/ffm.h" // not public API
  64
  65 # include "libavfilter/avcodec.h"
  66 # include "libavfilter/avfilter.h"
  67 # include "libavfilter/avfiltergraph.h"
  68 # include "libavfilter/buffersrc.h"
  69 # include "libavfilter/buffersink.h"
  70
  71 #if HAVE_SYS_RESOURCE_H
  72 #include <sys/types.h>
  73 #include <sys/resource.h>
  74 #elif HAVE_GETPROCESSTIMES
  75 #include <windows.h>
  76 #endif
  77 #if HAVE_GETPROCESSMEMORYINFO
  78 #include <windows.h>
  79 #include <psapi.h>
  80 #endif
  81
  82 #if HAVE_SYS_SELECT_H
  83 #include <sys/select.h>
  84 #endif
  85
  86 #if HAVE_TERMIOS_H
  87 #include <fcntl.h>
  88 #include <sys/ioctl.h>
  89 #include <sys/time.h>
  90 #include <termios.h>
  91 #elif HAVE_KBHIT
  92 #include <conio.h>
  93 #endif
  94
  95 #if HAVE_PTHREADS
  96 #include <pthread.h>
  97 #endif
  98
  99 #include <time.h>
 100
 101 #include "ffmpeg.h"
 102 #include "cmdutils.h"
 103
 104 #include "libavutil/avassert.h"
 105
 106 const char program_name[] = "ffmpeg";
 107 const int program_birth_year = 2000;
 108
 109 static FILE *vstats_file;
 110
 111 static void do_video_stats(AVFormatContext *os, OutputStream *ost, int frame_size);
 112 static int64_t getutime(void);
 113
 114 static int run_as_daemon  = 0;
 115 static int64_t video_size = 0;
 116 static int64_t audio_size = 0;
 117 static int64_t subtitle_size = 0;
 118 static int64_t extra_size = 0;
 119 static int nb_frames_dup = 0;
 120 static int nb_frames_drop = 0;
 121
 122 static int current_time;
 123 AVIOContext *progress_avio = NULL;
 124
 125 static uint8_t *subtitle_out;
 126
 127 #if HAVE_PTHREADS
 128 /* signal to input threads that they should exit; set by the main thread */
 129 static int transcoding_finished;
 130 #endif
 131
 132 #define DEFAULT_PASS_LOGFILENAME_PREFIX "ffmpeg2pass"
 133
 134 InputStream **input_streams = NULL;
 135 int        nb_input_streams = 0;
 136 InputFile   **input_files   = NULL;
 137 int        nb_input_files   = 0;
 138
 139 OutputStream **output_streams = NULL;
 140 int         nb_output_streams = 0;
 141 OutputFile   **output_files   = NULL;
 142 int         nb_output_files   = 0;
 143
 144 FilterGraph **filtergraphs;
 145 int        nb_filtergraphs;
 146
 147 #if HAVE_TERMIOS_H
 148
 149 /* init terminal so that we can grab keys */
 150 static struct termios oldtty;
 151 static int restore_tty;
 152 #endif
 153
 154
 155 /* sub2video hack:
 156    Convert subtitles to video with alpha to insert them in filter graphs.
 157    This is a temporary solution until libavfilter gets real subtitles support.
 158  */
 159
 160
 161
 162 static void sub2video_copy_rect(uint8_t *dst, int dst_linesize, int w, int h,
 163                                 AVSubtitleRect *r)
 164 {
 165     uint32_t *pal, *dst2;
 166     uint8_t *src, *src2;
 167     int x, y;
 168
 169     if (r->type != SUBTITLE_BITMAP) {
 170         av_log(NULL, AV_LOG_WARNING, "sub2video: non-bitmap subtitle\n");
 171         return;
 172     }
 173     if (r->x < 0 || r->x + r->w > w || r->y < 0 || r->y + r->h > h) {
 174         av_log(NULL, AV_LOG_WARNING, "sub2video: rectangle overflowing\n");
 175         return;
 176     }
 177
 178     dst += r->y * dst_linesize + r->x * 4;
 179     src = r->pict.data[0];
 180     pal = (uint32_t *)r->pict.data[1];
 181     for (y = 0; y < r->h; y++) {
 182         dst2 = (uint32_t *)dst;
 183         src2 = src;
 184         for (x = 0; x < r->w; x++)
 185             *(dst2++) = pal[*(src2++)];
 186         dst += dst_linesize;
 187         src += r->pict.linesize[0];
 188     }
 189 }
 190
 191 static void sub2video_push_ref(InputStream *ist, int64_t pts)
 192 {
 193     AVFilterBufferRef *ref = ist->sub2video.ref;
 194     int i;
 195
 196     ist->sub2video.last_pts = ref->pts = pts;
 197     for (i = 0; i < ist->nb_filters; i++)
 198         av_buffersrc_add_ref(ist->filters[i]->filter,
 199                              avfilter_ref_buffer(ref, ~0),
 200                              AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
 201                              AV_BUFFERSRC_FLAG_NO_COPY |
 202                              AV_BUFFERSRC_FLAG_PUSH);
 203 }
 204
 205 static void sub2video_update(InputStream *ist, AVSubtitle *sub)
 206 {
 207     int w = ist->sub2video.w, h = ist->sub2video.h;
 208     AVFilterBufferRef *ref = ist->sub2video.ref;
 209     int8_t *dst;
 210     int     dst_linesize;
 211     int i;
 212     int64_t pts = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ist->st->time_base);
 213
 214     if (!ref)
 215         return;
 216     dst          = ref->data    [0];
 217     dst_linesize = ref->linesize[0];
 218     memset(dst, 0, h * dst_linesize);
 219     for (i = 0; i < sub->num_rects; i++)
 220         sub2video_copy_rect(dst, dst_linesize, w, h, sub->rects[i]);
 221     sub2video_push_ref(ist, pts);
 222 }
 223
 224 static void sub2video_heartbeat(InputStream *ist, int64_t pts)
 225 {
 226     InputFile *infile = input_files[ist->file_index];
 227     int i, j, nb_reqs;
 228     int64_t pts2;
 229
 230     /* When a frame is read from a file, examine all sub2video streams in
 231        the same file and send the sub2video frame again. Otherwise, decoded
 232        video frames could be accumulating in the filter graph while a filter
 233        (possibly overlay) is desperately waiting for a subtitle frame. */
 234     for (i = 0; i < infile->nb_streams; i++) {
 235         InputStream *ist2 = input_streams[infile->ist_index + i];
 236         if (!ist2->sub2video.ref)
 237             continue;
 238         /* subtitles seem to be usually muxed ahead of other streams;
 239            if not, substracting a larger time here is necessary */
 240         pts2 = av_rescale_q(pts, ist->st->time_base, ist2->st->time_base) - 1;
 241         /* do not send the heartbeat frame if the subtitle is already ahead */
 242         if (pts2 <= ist2->sub2video.last_pts)
 243             continue;
 244         for (j = 0, nb_reqs = 0; j < ist2->nb_filters; j++)
 245             nb_reqs += av_buffersrc_get_nb_failed_requests(ist2->filters[j]->filter);
 246         if (nb_reqs)
 247             sub2video_push_ref(ist2, pts2);
 248     }
 249 }
 250
 251 static void sub2video_flush(InputStream *ist)
 252 {
 253     int i;
 254
 255     for (i = 0; i < ist->nb_filters; i++)
 256         av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
 257 }
 258
 259 /* end of sub2video hack */
 260
 261 void term_exit(void)
 262 {
 263     av_log(NULL, AV_LOG_QUIET, "%s", "");
 264 #if HAVE_TERMIOS_H
 265     if(restore_tty)
 266         tcsetattr (0, TCSANOW, &oldtty);
 267 #endif
 268 }
 269
 270 static volatile int received_sigterm = 0;
 271 static volatile int received_nb_signals = 0;
 272
 273 static void
 274 sigterm_handler(int sig)
 275 {
 276     received_sigterm = sig;
 277     received_nb_signals++;
 278     term_exit();
 279     if(received_nb_signals > 3)
 280         exit(123);
 281 }
 282
 283 void term_init(void)
 284 {
 285 #if HAVE_TERMIOS_H
 286     if(!run_as_daemon){
 287         struct termios tty;
 288         int istty = 1;
 289 #if HAVE_ISATTY
 290         istty = isatty(0) && isatty(2);
 291 #endif
 292         if (istty && tcgetattr (0, &tty) == 0) {
 293             oldtty = tty;
 294             restore_tty = 1;
 295             atexit(term_exit);
 296
 297             tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
 298                              |INLCR|IGNCR|ICRNL|IXON);
 299             tty.c_oflag |= OPOST;
 300             tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
 301             tty.c_cflag &= ~(CSIZE|PARENB);
 302             tty.c_cflag |= CS8;
 303             tty.c_cc[VMIN] = 1;
 304             tty.c_cc[VTIME] = 0;
 305
 306             tcsetattr (0, TCSANOW, &tty);
 307         }
 308         signal(SIGQUIT, sigterm_handler); /* Quit (POSIX).  */
 309     }
 310 #endif
 311     avformat_network_deinit();
 312
 313     signal(SIGINT , sigterm_handler); /* Interrupt (ANSI).    */
 314     signal(SIGTERM, sigterm_handler); /* Termination (ANSI).  */
 315 #ifdef SIGXCPU
 316     signal(SIGXCPU, sigterm_handler);
 317 #endif
 318 }
 319
 320 /* read a key without blocking */
 321 static int read_key(void)
 322 {
 323     unsigned char ch;
 324 #if HAVE_TERMIOS_H
 325     int n = 1;
 326     struct timeval tv;
 327     fd_set rfds;
 328
 329     FD_ZERO(&rfds);
 330     FD_SET(0, &rfds);
 331     tv.tv_sec = 0;
 332     tv.tv_usec = 0;
 333     n = select(1, &rfds, NULL, NULL, &tv);
 334     if (n > 0) {
 335         n = read(0, &ch, 1);
 336         if (n == 1)
 337             return ch;
 338
 339         return n;
 340     }
 341 #elif HAVE_KBHIT
 342 #    if HAVE_PEEKNAMEDPIPE
 343     static int is_pipe;
 344     static HANDLE input_handle;
 345     DWORD dw, nchars;
 346     if(!input_handle){
 347         input_handle = GetStdHandle(STD_INPUT_HANDLE);
 348         is_pipe = !GetConsoleMode(input_handle, &dw);
 349     }
 350
 351     if (stdin->_cnt > 0) {
 352         read(0, &ch, 1);
 353         return ch;
 354     }
 355     if (is_pipe) {
 356         /* When running under a GUI, you will end here. */
 357         if (!PeekNamedPipe(input_handle, NULL, 0, NULL, &nchars, NULL))
 358             return -1;
 359         //Read it
 360         if(nchars != 0) {
 361             read(0, &ch, 1);
 362             return ch;
 363         }else{
 364             return -1;
 365         }
 366     }
 367 #    endif
 368     if(kbhit())
 369         return(getch());
 370 #endif
 371     return -1;
 372 }
 373
 374 static int decode_interrupt_cb(void *ctx)
 375 {
 376     return received_nb_signals > 1;
 377 }
 378
 379 const AVIOInterruptCB int_cb = { decode_interrupt_cb, NULL };
 380
 381 static void exit_program(void)
 382 {
 383     int i, j;
 384
 385     for (i = 0; i < nb_filtergraphs; i++) {
 386         avfilter_graph_free(&filtergraphs[i]->graph);
 387         for (j = 0; j < filtergraphs[i]->nb_inputs; j++) {
 388             av_freep(&filtergraphs[i]->inputs[j]->name);
 389             av_freep(&filtergraphs[i]->inputs[j]);
 390         }
 391         av_freep(&filtergraphs[i]->inputs);
 392         for (j = 0; j < filtergraphs[i]->nb_outputs; j++) {
 393             av_freep(&filtergraphs[i]->outputs[j]->name);
 394             av_freep(&filtergraphs[i]->outputs[j]);
 395         }
 396         av_freep(&filtergraphs[i]->outputs);
 397         av_freep(&filtergraphs[i]);
 398     }
 399     av_freep(&filtergraphs);
 400
 401     av_freep(&subtitle_out);
 402
 403     /* close files */
 404     for (i = 0; i < nb_output_files; i++) {
 405         AVFormatContext *s = output_files[i]->ctx;
 406         if (!(s->oformat->flags & AVFMT_NOFILE) && s->pb)
 407             avio_close(s->pb);
 408         avformat_free_context(s);
 409         av_dict_free(&output_files[i]->opts);
 410         av_freep(&output_files[i]);
 411     }
 412     for (i = 0; i < nb_output_streams; i++) {
 413         AVBitStreamFilterContext *bsfc = output_streams[i]->bitstream_filters;
 414         while (bsfc) {
 415             AVBitStreamFilterContext *next = bsfc->next;
 416             av_bitstream_filter_close(bsfc);
 417             bsfc = next;
 418         }
 419         output_streams[i]->bitstream_filters = NULL;
 420         avcodec_free_frame(&output_streams[i]->filtered_frame);
 421
 422         av_freep(&output_streams[i]->forced_keyframes);
 423         av_freep(&output_streams[i]->avfilter);
 424         av_freep(&output_streams[i]->logfile_prefix);
 425         av_freep(&output_streams[i]);
 426     }
 427     for (i = 0; i < nb_input_files; i++) {
 428         avformat_close_input(&input_files[i]->ctx);
 429         av_freep(&input_files[i]);
 430     }
 431     for (i = 0; i < nb_input_streams; i++) {
 432         avcodec_free_frame(&input_streams[i]->decoded_frame);
 433         av_dict_free(&input_streams[i]->opts);
 434         free_buffer_pool(&input_streams[i]->buffer_pool);
 435         avfilter_unref_bufferp(&input_streams[i]->sub2video.ref);
 436         av_freep(&input_streams[i]->filters);
 437         av_freep(&input_streams[i]);
 438     }
 439
 440     if (vstats_file)
 441         fclose(vstats_file);
 442     av_free(vstats_filename);
 443
 444     av_freep(&input_streams);
 445     av_freep(&input_files);
 446     av_freep(&output_streams);
 447     av_freep(&output_files);
 448
 449     uninit_opts();
 450
 451     avfilter_uninit();
 452     avformat_network_deinit();
 453
 454     if (received_sigterm) {
 455         av_log(NULL, AV_LOG_INFO, "Received signal %d: terminating.\n",
 456                (int) received_sigterm);
 457         exit (255);
 458     }
 459 }
 460
 461 void assert_avoptions(AVDictionary *m)
 462 {
 463     AVDictionaryEntry *t;
 464     if ((t = av_dict_get(m, "", NULL, AV_DICT_IGNORE_SUFFIX))) {
 465         av_log(NULL, AV_LOG_FATAL, "Option %s not found.\n", t->key);
 466         exit(1);
 467     }
 468 }
 469
 470 static void assert_codec_experimental(AVCodecContext *c, int encoder)
 471 {
 472     const char *codec_string = encoder ? "encoder" : "decoder";
 473     AVCodec *codec;
 474     if (c->codec->capabilities & CODEC_CAP_EXPERIMENTAL &&
 475         c->strict_std_compliance > FF_COMPLIANCE_EXPERIMENTAL) {
 476         av_log(NULL, AV_LOG_FATAL, "%s '%s' is experimental and might produce bad "
 477                 "results.\nAdd '-strict experimental' if you want to use it.\n",
 478                 codec_string, c->codec->name);
 479         codec = encoder ? avcodec_find_encoder(c->codec->id) : avcodec_find_decoder(c->codec->id);
 480         if (!(codec->capabilities & CODEC_CAP_EXPERIMENTAL))
 481             av_log(NULL, AV_LOG_FATAL, "Or use the non experimental %s '%s'.\n",
 482                    codec_string, codec->name);
 483         exit(1);
 484     }
 485 }
 486
 487 static void update_benchmark(const char *fmt, ...)
 488 {
 489     if (do_benchmark_all) {
 490         int64_t t = getutime();
 491         va_list va;
 492         char buf[1024];
 493
 494         if (fmt) {
 495             va_start(va, fmt);
 496             vsnprintf(buf, sizeof(buf), fmt, va);
 497             va_end(va);
 498             printf("bench: %8"PRIu64" %s \n", t - current_time, buf);
 499         }
 500         current_time = t;
 501     }
 502 }
 503
 504 static void write_frame(AVFormatContext *s, AVPacket *pkt, OutputStream *ost)
 505 {
 506     AVBitStreamFilterContext *bsfc = ost->bitstream_filters;
 507     AVCodecContext          *avctx = ost->st->codec;
 508     int ret;
 509
 510     if ((avctx->codec_type == AVMEDIA_TYPE_VIDEO && video_sync_method == VSYNC_DROP) ||
 511         (avctx->codec_type == AVMEDIA_TYPE_AUDIO && audio_sync_method < 0))
 512         pkt->pts = pkt->dts = AV_NOPTS_VALUE;
 513
 514     if ((avctx->codec_type == AVMEDIA_TYPE_AUDIO || avctx->codec_type == AVMEDIA_TYPE_VIDEO) && pkt->dts != AV_NOPTS_VALUE) {
 515         int64_t max = ost->st->cur_dts + !(s->oformat->flags & AVFMT_TS_NONSTRICT);
 516         if (ost->st->cur_dts && ost->st->cur_dts != AV_NOPTS_VALUE &&  max > pkt->dts) {
 517             av_log(s, max - pkt->dts > 2 || avctx->codec_type == AVMEDIA_TYPE_VIDEO ? AV_LOG_WARNING : AV_LOG_DEBUG,
 518                    "st:%d PTS: %"PRId64" DTS: %"PRId64" < %"PRId64" invalid, clipping\n", pkt->stream_index, pkt->pts, pkt->dts, max);
 519             if(pkt->pts >= pkt->dts)
 520                 pkt->pts = FFMAX(pkt->pts, max);
 521             pkt->dts = max;
 522         }
 523     }
 524
 525     /*
 526      * Audio encoders may split the packets --  #frames in != #packets out.
 527      * But there is no reordering, so we can limit the number of output packets
 528      * by simply dropping them here.
 529      * Counting encoded video frames needs to be done separately because of
 530      * reordering, see do_video_out()
 531      */
 532     if (!(avctx->codec_type == AVMEDIA_TYPE_VIDEO && avctx->codec)) {
 533         if (ost->frame_number >= ost->max_frames) {
 534             av_free_packet(pkt);
 535             return;
 536         }
 537         ost->frame_number++;
 538     }
 539
 540     while (bsfc) {
 541         AVPacket new_pkt = *pkt;
 542         int a = av_bitstream_filter_filter(bsfc, avctx, NULL,
 543                                            &new_pkt.data, &new_pkt.size,
 544                                            pkt->data, pkt->size,
 545                                            pkt->flags & AV_PKT_FLAG_KEY);
 546         if(a == 0 && new_pkt.data != pkt->data && new_pkt.destruct) {
 547             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
 548             if(t) {
 549                 memcpy(t, new_pkt.data, new_pkt.size);
 550                 memset(t + new_pkt.size, 0, FF_INPUT_BUFFER_PADDING_SIZE);
 551                 new_pkt.data = t;
 552                 a = 1;
 553             } else
 554                 a = AVERROR(ENOMEM);
 555         }
 556         if (a > 0) {
 557             av_free_packet(pkt);
 558             new_pkt.destruct = av_destruct_packet;
 559         } else if (a < 0) {
 560             av_log(NULL, AV_LOG_ERROR, "Failed to open bitstream filter %s for stream %d with codec %s",
 561                    bsfc->filter->name, pkt->stream_index,
 562                    avctx->codec ? avctx->codec->name : "copy");
 563             print_error("", a);
 564             if (exit_on_error)
 565                 exit(1);
 566         }
 567         *pkt = new_pkt;
 568
 569         bsfc = bsfc->next;
 570     }
 571
 572     pkt->stream_index = ost->index;
 573
 574     if (debug_ts) {
 575         av_log(NULL, AV_LOG_INFO, "muxer <- type:%s "
 576                 "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s size:%d\n",
 577                 av_get_media_type_string(ost->st->codec->codec_type),
 578                 av_ts2str(pkt->pts), av_ts2timestr(pkt->pts, &ost->st->time_base),
 579                 av_ts2str(pkt->dts), av_ts2timestr(pkt->dts, &ost->st->time_base),
 580                 pkt->size
 581               );
 582     }
 583
 584     ret = av_interleaved_write_frame(s, pkt);
 585     if (ret < 0) {
 586         print_error("av_interleaved_write_frame()", ret);
 587         exit(1);
 588     }
 589 }
 590
 591 static void close_output_stream(OutputStream *ost)
 592 {
 593     OutputFile *of = output_files[ost->file_index];
 594
 595     ost->finished = 1;
 596     if (of->shortest) {
 597         int i;
 598         for (i = 0; i < of->ctx->nb_streams; i++)
 599             output_streams[of->ost_index + i]->finished = 1;
 600     }
 601 }
 602
 603 static int check_recording_time(OutputStream *ost)
 604 {
 605     OutputFile *of = output_files[ost->file_index];
 606
 607     if (of->recording_time != INT64_MAX &&
 608         av_compare_ts(ost->sync_opts - ost->first_pts, ost->st->codec->time_base, of->recording_time,
 609                       AV_TIME_BASE_Q) >= 0) {
 610         close_output_stream(ost);
 611         return 0;
 612     }
 613     return 1;
 614 }
 615
 616 static void do_audio_out(AVFormatContext *s, OutputStream *ost,
 617                          AVFrame *frame)
 618 {
 619     AVCodecContext *enc = ost->st->codec;
 620     AVPacket pkt;
 621     int got_packet = 0;
 622
 623     av_init_packet(&pkt);
 624     pkt.data = NULL;
 625     pkt.size = 0;
 626
 627     if (!check_recording_time(ost))
 628         return;
 629
 630     if (frame->pts == AV_NOPTS_VALUE || audio_sync_method < 0)
 631         frame->pts = ost->sync_opts;
 632     ost->sync_opts = frame->pts + frame->nb_samples;
 633
 634     av_assert0(pkt.size || !pkt.data);
 635     update_benchmark(NULL);
 636     if (avcodec_encode_audio2(enc, &pkt, frame, &got_packet) < 0) {
 637         av_log(NULL, AV_LOG_FATAL, "Audio encoding failed (avcodec_encode_audio2)\n");
 638         exit(1);
 639     }
 640     update_benchmark("encode_audio %d.%d", ost->file_index, ost->index);
 641
 642     if (got_packet) {
 643         if (pkt.pts != AV_NOPTS_VALUE)
 644             pkt.pts      = av_rescale_q(pkt.pts,      enc->time_base, ost->st->time_base);
 645         if (pkt.dts != AV_NOPTS_VALUE)
 646             pkt.dts      = av_rescale_q(pkt.dts,      enc->time_base, ost->st->time_base);
 647         if (pkt.duration > 0)
 648             pkt.duration = av_rescale_q(pkt.duration, enc->time_base, ost->st->time_base);
 649
 650         if (debug_ts) {
 651             av_log(NULL, AV_LOG_INFO, "encoder -> type:audio "
 652                    "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
 653                    av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
 654                    av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
 655         }
 656
 657         audio_size += pkt.size;
 658         write_frame(s, &pkt, ost);
 659
 660         av_free_packet(&pkt);
 661     }
 662 }
 663
 664 static void pre_process_video_frame(InputStream *ist, AVPicture *picture, void **bufp)
 665 {
 666     AVCodecContext *dec;
 667     AVPicture *picture2;
 668     AVPicture picture_tmp;
 669     uint8_t *buf = 0;
 670
 671     dec = ist->st->codec;
 672
 673     /* deinterlace : must be done before any resize */
 674     if (do_deinterlace) {
 675         int size;
 676
 677         /* create temporary picture */
 678         size = avpicture_get_size(dec->pix_fmt, dec->width, dec->height);
 679         buf  = av_malloc(size);
 680         if (!buf)
 681             return;
 682
 683         picture2 = &picture_tmp;
 684         avpicture_fill(picture2, buf, dec->pix_fmt, dec->width, dec->height);
 685
 686         if (avpicture_deinterlace(picture2, picture,
 687                                  dec->pix_fmt, dec->width, dec->height) < 0) {
 688             /* if error, do not deinterlace */
 689             av_log(NULL, AV_LOG_WARNING, "Deinterlacing failed\n");
 690             av_free(buf);
 691             buf = NULL;
 692             picture2 = picture;
 693         }
 694     } else {
 695         picture2 = picture;
 696     }
 697
 698     if (picture != picture2)
 699         *picture = *picture2;
 700     *bufp = buf;
 701 }
 702
 703 static void do_subtitle_out(AVFormatContext *s,
 704                             OutputStream *ost,
 705                             InputStream *ist,
 706                             AVSubtitle *sub)
 707 {
 708     int subtitle_out_max_size = 1024 * 1024;
 709     int subtitle_out_size, nb, i;
 710     AVCodecContext *enc;
 711     AVPacket pkt;
 712     int64_t pts;
 713
 714     if (sub->pts == AV_NOPTS_VALUE) {
 715         av_log(NULL, AV_LOG_ERROR, "Subtitle packets must have a pts\n");
 716         if (exit_on_error)
 717             exit(1);
 718         return;
 719     }
 720
 721     enc = ost->st->codec;
 722
 723     if (!subtitle_out) {
 724         subtitle_out = av_malloc(subtitle_out_max_size);
 725     }
 726
 727     /* Note: DVB subtitle need one packet to draw them and one other
 728        packet to clear them */
 729     /* XXX: signal it in the codec context ? */
 730     if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE)
 731         nb = 2;
 732     else
 733         nb = 1;
 734
 735     /* shift timestamp to honor -ss and make check_recording_time() work with -t */
 736     pts = sub->pts - output_files[ost->file_index]->start_time;
 737     for (i = 0; i < nb; i++) {
 738         ost->sync_opts = av_rescale_q(pts, AV_TIME_BASE_Q, enc->time_base);
 739         if (!check_recording_time(ost))
 740             return;
 741
 742         sub->pts = pts;
 743         // start_display_time is required to be 0
 744         sub->pts               += av_rescale_q(sub->start_display_time, (AVRational){ 1, 1000 }, AV_TIME_BASE_Q);
 745         sub->end_display_time  -= sub->start_display_time;
 746         sub->start_display_time = 0;
 747         if (i == 1)
 748             sub->num_rects = 0;
 749         subtitle_out_size = avcodec_encode_subtitle(enc, subtitle_out,
 750                                                     subtitle_out_max_size, sub);
 751         if (subtitle_out_size < 0) {
 752             av_log(NULL, AV_LOG_FATAL, "Subtitle encoding failed\n");
 753             exit(1);
 754         }
 755
 756         av_init_packet(&pkt);
 757         pkt.data = subtitle_out;
 758         pkt.size = subtitle_out_size;
 759         pkt.pts  = av_rescale_q(sub->pts, AV_TIME_BASE_Q, ost->st->time_base);
 760         pkt.duration = av_rescale_q(sub->end_display_time, (AVRational){ 1, 1000 }, ost->st->time_base);
 761         if (enc->codec_id == AV_CODEC_ID_DVB_SUBTITLE) {
 762             /* XXX: the pts correction is handled here. Maybe handling
 763                it in the codec would be better */
 764             if (i == 0)
 765                 pkt.pts += 90 * sub->start_display_time;
 766             else
 767                 pkt.pts += 90 * sub->end_display_time;
 768         }
 769         subtitle_size += pkt.size;
 770         write_frame(s, &pkt, ost);
 771     }
 772 }
 773
 774 static void do_video_out(AVFormatContext *s,
 775                          OutputStream *ost,
 776                          AVFrame *in_picture)
 777 {
 778     int ret, format_video_sync;
 779     AVPacket pkt;
 780     AVCodecContext *enc = ost->st->codec;
 781     int nb_frames, i;
 782     double sync_ipts, delta;
 783     double duration = 0;
 784     int frame_size = 0;
 785     InputStream *ist = NULL;
 786
 787     if (ost->source_index >= 0)
 788         ist = input_streams[ost->source_index];
 789
 790     if(ist && ist->st->start_time != AV_NOPTS_VALUE && ist->st->first_dts != AV_NOPTS_VALUE && ost->frame_rate.num)
 791         duration = 1/(av_q2d(ost->frame_rate) * av_q2d(enc->time_base));
 792
 793     sync_ipts = in_picture->pts;
 794     delta = sync_ipts - ost->sync_opts + duration;
 795
 796     /* by default, we output a single frame */
 797     nb_frames = 1;
 798
 799     format_video_sync = video_sync_method;
 800     if (format_video_sync == VSYNC_AUTO)
 801         format_video_sync = (s->oformat->flags & AVFMT_VARIABLE_FPS) ? ((s->oformat->flags & AVFMT_NOTIMESTAMPS) ? VSYNC_PASSTHROUGH : VSYNC_VFR) : 1;
 802
 803     switch (format_video_sync) {
 804     case VSYNC_CFR:
 805         // FIXME set to 0.5 after we fix some dts/pts bugs like in avidec.c
 806         if (delta < -1.1)
 807             nb_frames = 0;
 808         else if (delta > 1.1)
 809             nb_frames = lrintf(delta);
 810         break;
 811     case VSYNC_VFR:
 812         if (delta <= -0.6)
 813             nb_frames = 0;
 814         else if (delta > 0.6)
 815             ost->sync_opts = lrint(sync_ipts);
 816         break;
 817     case VSYNC_DROP:
 818     case VSYNC_PASSTHROUGH:
 819         ost->sync_opts = lrint(sync_ipts);
 820         break;
 821     default:
 822         av_assert0(0);
 823     }
 824
 825     nb_frames = FFMIN(nb_frames, ost->max_frames - ost->frame_number);
 826     if (nb_frames == 0) {
 827         nb_frames_drop++;
 828         av_log(NULL, AV_LOG_VERBOSE, "*** drop!\n");
 829         return;
 830     } else if (nb_frames > 1) {
 831         if (nb_frames > dts_error_threshold * 30) {
 832             av_log(NULL, AV_LOG_ERROR, "%d frame duplication too large, skipping\n", nb_frames - 1);
 833             nb_frames_drop++;
 834             return;
 835         }
 836         nb_frames_dup += nb_frames - 1;
 837         av_log(NULL, AV_LOG_VERBOSE, "*** %d dup!\n", nb_frames - 1);
 838     }
 839
 840   /* duplicates frame if needed */
 841   for (i = 0; i < nb_frames; i++) {
 842     av_init_packet(&pkt);
 843     pkt.data = NULL;
 844     pkt.size = 0;
 845
 846     in_picture->pts = ost->sync_opts;
 847
 848     if (!check_recording_time(ost))
 849         return;
 850
 851     if (s->oformat->flags & AVFMT_RAWPICTURE &&
 852         enc->codec->id == AV_CODEC_ID_RAWVIDEO) {
 853         /* raw pictures are written as AVPicture structure to
 854            avoid any copies. We support temporarily the older
 855            method. */
 856         enc->coded_frame->interlaced_frame = in_picture->interlaced_frame;
 857         enc->coded_frame->top_field_first  = in_picture->top_field_first;
 858         pkt.data   = (uint8_t *)in_picture;
 859         pkt.size   =  sizeof(AVPicture);
 860         pkt.pts    = av_rescale_q(in_picture->pts, enc->time_base, ost->st->time_base);
 861         pkt.flags |= AV_PKT_FLAG_KEY;
 862
 863         video_size += pkt.size;
 864         write_frame(s, &pkt, ost);
 865     } else {
 866         int got_packet;
 867         AVFrame big_picture;
 868
 869         big_picture = *in_picture;
 870         /* better than nothing: use input picture interlaced
 871            settings */
 872         big_picture.interlaced_frame = in_picture->interlaced_frame;
 873         if (ost->st->codec->flags & (CODEC_FLAG_INTERLACED_DCT|CODEC_FLAG_INTERLACED_ME)) {
 874             if (ost->top_field_first == -1)
 875                 big_picture.top_field_first = in_picture->top_field_first;
 876             else
 877                 big_picture.top_field_first = !!ost->top_field_first;
 878         }
 879
 880         big_picture.quality = ost->st->codec->global_quality;
 881         if (!enc->me_threshold)
 882             big_picture.pict_type = 0;
 883         if (ost->forced_kf_index < ost->forced_kf_count &&
 884             big_picture.pts >= ost->forced_kf_pts[ost->forced_kf_index]) {
 885             big_picture.pict_type = AV_PICTURE_TYPE_I;
 886             ost->forced_kf_index++;
 887         }
 888         update_benchmark(NULL);
 889         ret = avcodec_encode_video2(enc, &pkt, &big_picture, &got_packet);
 890         update_benchmark("encode_video %d.%d", ost->file_index, ost->index);
 891         if (ret < 0) {
 892             av_log(NULL, AV_LOG_FATAL, "Video encoding failed\n");
 893             exit(1);
 894         }
 895
 896         if (got_packet) {
 897             if (pkt.pts == AV_NOPTS_VALUE && !(enc->codec->capabilities & CODEC_CAP_DELAY))
 898                 pkt.pts = ost->sync_opts;
 899
 900             if (pkt.pts != AV_NOPTS_VALUE)
 901                 pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
 902             if (pkt.dts != AV_NOPTS_VALUE)
 903                 pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
 904
 905             if (debug_ts) {
 906                 av_log(NULL, AV_LOG_INFO, "encoder -> type:video "
 907                     "pkt_pts:%s pkt_pts_time:%s pkt_dts:%s pkt_dts_time:%s\n",
 908                     av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ost->st->time_base),
 909                     av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ost->st->time_base));
 910             }
 911
 912             frame_size = pkt.size;
 913             video_size += pkt.size;
 914             write_frame(s, &pkt, ost);
 915             av_free_packet(&pkt);
 916
 917             /* if two pass, output log */
 918             if (ost->logfile && enc->stats_out) {
 919                 fprintf(ost->logfile, "%s", enc->stats_out);
 920             }
 921         }
 922     }
 923     ost->sync_opts++;
 924     /*
 925      * For video, number of frames in == number of packets out.
 926      * But there may be reordering, so we can't throw away frames on encoder
 927      * flush, we need to limit them here, before they go into encoder.
 928      */
 929     ost->frame_number++;
 930   }
 931
 932     if (vstats_filename && frame_size)
 933         do_video_stats(output_files[ost->file_index]->ctx, ost, frame_size);
 934 }
 935
 936 static double psnr(double d)
 937 {
 938     return -10.0 * log(d) / log(10.0);
 939 }
 940
 941 static void do_video_stats(AVFormatContext *os, OutputStream *ost,
 942                            int frame_size)
 943 {
 944     AVCodecContext *enc;
 945     int frame_number;
 946     double ti1, bitrate, avg_bitrate;
 947
 948     /* this is executed just the first time do_video_stats is called */
 949     if (!vstats_file) {
 950         vstats_file = fopen(vstats_filename, "w");
 951         if (!vstats_file) {
 952             perror("fopen");
 953             exit(1);
 954         }
 955     }
 956
 957     enc = ost->st->codec;
 958     if (enc->codec_type == AVMEDIA_TYPE_VIDEO) {
 959         frame_number = ost->frame_number;
 960         fprintf(vstats_file, "frame= %5d q= %2.1f ", frame_number, enc->coded_frame->quality / (float)FF_QP2LAMBDA);
 961         if (enc->flags&CODEC_FLAG_PSNR)
 962             fprintf(vstats_file, "PSNR= %6.2f ", psnr(enc->coded_frame->error[0] / (enc->width * enc->height * 255.0 * 255.0)));
 963
 964         fprintf(vstats_file,"f_size= %6d ", frame_size);
 965         /* compute pts value */
 966         ti1 = ost->sync_opts * av_q2d(enc->time_base);
 967         if (ti1 < 0.01)
 968             ti1 = 0.01;
 969
 970         bitrate     = (frame_size * 8) / av_q2d(enc->time_base) / 1000.0;
 971         avg_bitrate = (double)(video_size * 8) / ti1 / 1000.0;
 972         fprintf(vstats_file, "s_size= %8.0fkB time= %0.3f br= %7.1fkbits/s avg_br= %7.1fkbits/s ",
 973                (double)video_size / 1024, ti1, bitrate, avg_bitrate);
 974         fprintf(vstats_file, "type= %c\n", av_get_picture_type_char(enc->coded_frame->pict_type));
 975     }
 976 }
 977
 978 /**
 979  * Get and encode new output from any of the filtergraphs, without causing
 980  * activity.
 981  *
 982  * @return  0 for success, <0 for severe errors
 983  */
 984 static int reap_filters(void)
 985 {
 986     AVFilterBufferRef *picref;
 987     AVFrame *filtered_frame = NULL;
 988     int i;
 989     int64_t frame_pts;
 990
 991     /* Reap all buffers present in the buffer sinks */
 992     for (i = 0; i < nb_output_streams; i++) {
 993         OutputStream *ost = output_streams[i];
 994         OutputFile    *of = output_files[ost->file_index];
 995         int ret = 0;
 996
 997         if (!ost->filter)
 998             continue;
 999
1000         if (!ost->filtered_frame && !(ost->filtered_frame = avcodec_alloc_frame())) {
1001             return AVERROR(ENOMEM);
1002         } else
1003             avcodec_get_frame_defaults(ost->filtered_frame);
1004         filtered_frame = ost->filtered_frame;
1005
1006         while (1) {
1007             ret = av_buffersink_get_buffer_ref(ost->filter->filter, &picref,
1008                                                AV_BUFFERSINK_FLAG_NO_REQUEST);
1009             if (ret < 0) {
1010                 if (ret != AVERROR(EAGAIN) && ret != AVERROR_EOF) {
1011                     char buf[256];
1012                     av_strerror(ret, buf, sizeof(buf));
1013                     av_log(NULL, AV_LOG_WARNING,
1014                            "Error in av_buffersink_get_buffer_ref(): %s\n", buf);
1015                 }
1016                 break;
1017             }
1018             frame_pts = AV_NOPTS_VALUE;
1019             if (picref->pts != AV_NOPTS_VALUE) {
1020                 filtered_frame->pts = frame_pts = av_rescale_q(picref->pts,
1021                                                 ost->filter->filter->inputs[0]->time_base,
1022                                                 ost->st->codec->time_base) -
1023                                     av_rescale_q(of->start_time,
1024                                                 AV_TIME_BASE_Q,
1025                                                 ost->st->codec->time_base);
1026
1027                 if (of->start_time && filtered_frame->pts < 0) {
1028                     avfilter_unref_buffer(picref);
1029                     continue;
1030                 }
1031             }
1032             //if (ost->source_index >= 0)
1033             //    *filtered_frame= *input_streams[ost->source_index]->decoded_frame; //for me_threshold
1034
1035
1036             switch (ost->filter->filter->inputs[0]->type) {
1037             case AVMEDIA_TYPE_VIDEO:
1038                 avfilter_copy_buf_props(filtered_frame, picref);
1039                 filtered_frame->pts = frame_pts;
1040                 if (!ost->frame_aspect_ratio)
1041                     ost->st->codec->sample_aspect_ratio = picref->video->sample_aspect_ratio;
1042
1043                 do_video_out(of->ctx, ost, filtered_frame);
1044                 break;
1045             case AVMEDIA_TYPE_AUDIO:
1046                 avfilter_copy_buf_props(filtered_frame, picref);
1047                 filtered_frame->pts = frame_pts;
1048                 do_audio_out(of->ctx, ost, filtered_frame);
1049                 break;
1050             default:
1051                 // TODO support subtitle filters
1052                 av_assert0(0);
1053             }
1054
1055             avfilter_unref_buffer(picref);
1056         }
1057     }
1058
1059     return 0;
1060 }
1061
1062 static void print_report(int is_last_report, int64_t timer_start, int64_t cur_time)
1063 {
1064     char buf[1024];
1065     AVBPrint buf_script;
1066     OutputStream *ost;
1067     AVFormatContext *oc;
1068     int64_t total_size;
1069     AVCodecContext *enc;
1070     int frame_number, vid, i;
1071     double bitrate;
1072     int64_t pts = INT64_MIN;
1073     static int64_t last_time = -1;
1074     static int qp_histogram[52];
1075     int hours, mins, secs, us;
1076
1077     if (!print_stats && !is_last_report && !progress_avio)
1078         return;
1079
1080     if (!is_last_report) {
1081         if (last_time == -1) {
1082             last_time = cur_time;
1083             return;
1084         }
1085         if ((cur_time - last_time) < 500000)
1086             return;
1087         last_time = cur_time;
1088     }
1089
1090
1091     oc = output_files[0]->ctx;
1092
1093     total_size = avio_size(oc->pb);
1094     if (total_size < 0) { // FIXME improve avio_size() so it works with non seekable output too
1095         total_size = avio_tell(oc->pb);
1096         if (total_size < 0)
1097             total_size = 0;
1098     }
1099
1100     buf[0] = '\0';
1101     vid = 0;
1102     av_bprint_init(&buf_script, 0, 1);
1103     for (i = 0; i < nb_output_streams; i++) {
1104         float q = -1;
1105         ost = output_streams[i];
1106         enc = ost->st->codec;
1107         if (!ost->stream_copy && enc->coded_frame)
1108             q = enc->coded_frame->quality / (float)FF_QP2LAMBDA;
1109         if (vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1110             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "q=%2.1f ", q);
1111             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1112                        ost->file_index, ost->index, q);
1113         }
1114         if (!vid && enc->codec_type == AVMEDIA_TYPE_VIDEO) {
1115             float fps, t = (cur_time-timer_start) / 1000000.0;
1116
1117             frame_number = ost->frame_number;
1118             fps = t > 1 ? frame_number / t : 0;
1119             snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "frame=%5d fps=%3.*f q=%3.1f ",
1120                      frame_number, fps < 9.95, fps, q);
1121             av_bprintf(&buf_script, "frame=%d\n", frame_number);
1122             av_bprintf(&buf_script, "fps=%.1f\n", fps);
1123             av_bprintf(&buf_script, "stream_%d_%d_q=%.1f\n",
1124                        ost->file_index, ost->index, q);
1125             if (is_last_report)
1126                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "L");
1127             if (qp_hist) {
1128                 int j;
1129                 int qp = lrintf(q);
1130                 if (qp >= 0 && qp < FF_ARRAY_ELEMS(qp_histogram))
1131                     qp_histogram[qp]++;
1132                 for (j = 0; j < 32; j++)
1133                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%X", (int)lrintf(log2(qp_histogram[j] + 1)));
1134             }
1135             if (enc->flags&CODEC_FLAG_PSNR) {
1136                 int j;
1137                 double error, error_sum = 0;
1138                 double scale, scale_sum = 0;
1139                 double p;
1140                 char type[3] = { 'Y','U','V' };
1141                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "PSNR=");
1142                 for (j = 0; j < 3; j++) {
1143                     if (is_last_report) {
1144                         error = enc->error[j];
1145                         scale = enc->width * enc->height * 255.0 * 255.0 * frame_number;
1146                     } else {
1147                         error = enc->coded_frame->error[j];
1148                         scale = enc->width * enc->height * 255.0 * 255.0;
1149                     }
1150                     if (j)
1151                         scale /= 4;
1152                     error_sum += error;
1153                     scale_sum += scale;
1154                     p = psnr(error / scale);
1155                     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "%c:%2.2f ", type[j], p);
1156                     av_bprintf(&buf_script, "stream_%d_%d_psnr_%c=%2.2f\n",
1157                                ost->file_index, ost->index, type[i] | 32, p);
1158                 }
1159                 p = psnr(error_sum / scale_sum);
1160                 snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), "*:%2.2f ", psnr(error_sum / scale_sum));
1161                 av_bprintf(&buf_script, "stream_%d_%d_psnr_all=%2.2f\n",
1162                            ost->file_index, ost->index, p);
1163             }
1164             vid = 1;
1165         }
1166         /* compute min output value */
1167         if ((is_last_report || !ost->finished) && ost->st->pts.val != AV_NOPTS_VALUE)
1168             pts = FFMAX(pts, av_rescale_q(ost->st->pts.val,
1169                                           ost->st->time_base, AV_TIME_BASE_Q));
1170     }
1171
1172     secs = pts / AV_TIME_BASE;
1173     us = pts % AV_TIME_BASE;
1174     mins = secs / 60;
1175     secs %= 60;
1176     hours = mins / 60;
1177     mins %= 60;
1178
1179     bitrate = pts ? total_size * 8 / (pts / 1000.0) : 0;
1180
1181     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1182              "size=%8.0fkB time=", total_size / 1024.0);
1183     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1184              "%02d:%02d:%02d.%02d ", hours, mins, secs,
1185              (100 * us) / AV_TIME_BASE);
1186     snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf),
1187              "bitrate=%6.1fkbits/s", bitrate);
1188     av_bprintf(&buf_script, "total_size=%"PRId64"\n", total_size);
1189     av_bprintf(&buf_script, "out_time_ms=%"PRId64"\n", pts);
1190     av_bprintf(&buf_script, "out_time=%02d:%02d:%02d.%06d\n",
1191                hours, mins, secs, us);
1192
1193     if (nb_frames_dup || nb_frames_drop)
1194         snprintf(buf + strlen(buf), sizeof(buf) - strlen(buf), " dup=%d drop=%d",
1195                 nb_frames_dup, nb_frames_drop);
1196     av_bprintf(&buf_script, "dup_frames=%d\n", nb_frames_dup);
1197     av_bprintf(&buf_script, "drop_frames=%d\n", nb_frames_drop);
1198
1199     if (print_stats || is_last_report) {
1200     av_log(NULL, AV_LOG_INFO, "%s    \r", buf);
1201
1202     fflush(stderr);
1203     }
1204
1205     if (progress_avio) {
1206         av_bprintf(&buf_script, "progress=%s\n",
1207                    is_last_report ? "end" : "continue");
1208         avio_write(progress_avio, buf_script.str,
1209                    FFMIN(buf_script.len, buf_script.size - 1));
1210         avio_flush(progress_avio);
1211         av_bprint_finalize(&buf_script, NULL);
1212         if (is_last_report) {
1213             avio_close(progress_avio);
1214             progress_avio = NULL;
1215         }
1216     }
1217
1218     if (is_last_report) {
1219         int64_t raw= audio_size + video_size + subtitle_size + extra_size;
1220         av_log(NULL, AV_LOG_INFO, "\n");
1221         av_log(NULL, AV_LOG_INFO, "video:%1.0fkB audio:%1.0fkB subtitle:%1.0f global headers:%1.0fkB muxing overhead %f%%\n",
1222                video_size / 1024.0,
1223                audio_size / 1024.0,
1224                subtitle_size / 1024.0,
1225                extra_size / 1024.0,
1226                100.0 * (total_size - raw) / raw
1227         );
1228         if(video_size + audio_size + subtitle_size + extra_size == 0){
1229             av_log(NULL, AV_LOG_WARNING, "Output file is empty, nothing was encoded (check -ss / -t / -frames parameters if used)\n");
1230         }
1231     }
1232 }
1233
1234 static void flush_encoders(void)
1235 {
1236     int i, ret;
1237
1238     for (i = 0; i < nb_output_streams; i++) {
1239         OutputStream   *ost = output_streams[i];
1240         AVCodecContext *enc = ost->st->codec;
1241         AVFormatContext *os = output_files[ost->file_index]->ctx;
1242         int stop_encoding = 0;
1243
1244         if (!ost->encoding_needed)
1245             continue;
1246
1247         if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO && enc->frame_size <= 1)
1248             continue;
1249         if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (os->oformat->flags & AVFMT_RAWPICTURE) && enc->codec->id == AV_CODEC_ID_RAWVIDEO)
1250             continue;
1251
1252         for (;;) {
1253             int (*encode)(AVCodecContext*, AVPacket*, const AVFrame*, int*) = NULL;
1254             const char *desc;
1255             int64_t *size;
1256
1257             switch (ost->st->codec->codec_type) {
1258             case AVMEDIA_TYPE_AUDIO:
1259                 encode = avcodec_encode_audio2;
1260                 desc   = "Audio";
1261                 size   = &audio_size;
1262                 break;
1263             case AVMEDIA_TYPE_VIDEO:
1264                 encode = avcodec_encode_video2;
1265                 desc   = "Video";
1266                 size   = &video_size;
1267                 break;
1268             default:
1269                 stop_encoding = 1;
1270             }
1271
1272             if (encode) {
1273                 AVPacket pkt;
1274                 int got_packet;
1275                 av_init_packet(&pkt);
1276                 pkt.data = NULL;
1277                 pkt.size = 0;
1278
1279                 update_benchmark(NULL);
1280                 ret = encode(enc, &pkt, NULL, &got_packet);
1281                 update_benchmark("flush %s %d.%d", desc, ost->file_index, ost->index);
1282                 if (ret < 0) {
1283                     av_log(NULL, AV_LOG_FATAL, "%s encoding failed\n", desc);
1284                     exit(1);
1285                 }
1286                 *size += pkt.size;
1287                 if (ost->logfile && enc->stats_out) {
1288                     fprintf(ost->logfile, "%s", enc->stats_out);
1289                 }
1290                 if (!got_packet) {
1291                     stop_encoding = 1;
1292                     break;
1293                 }
1294                 if (pkt.pts != AV_NOPTS_VALUE)
1295                     pkt.pts = av_rescale_q(pkt.pts, enc->time_base, ost->st->time_base);
1296                 if (pkt.dts != AV_NOPTS_VALUE)
1297                     pkt.dts = av_rescale_q(pkt.dts, enc->time_base, ost->st->time_base);
1298                 write_frame(os, &pkt, ost);
1299             }
1300
1301             if (stop_encoding)
1302                 break;
1303         }
1304     }
1305 }
1306
1307 /*
1308  * Check whether a packet from ist should be written into ost at this time
1309  */
1310 static int check_output_constraints(InputStream *ist, OutputStream *ost)
1311 {
1312     OutputFile *of = output_files[ost->file_index];
1313     int ist_index  = input_files[ist->file_index]->ist_index + ist->st->index;
1314
1315     if (ost->source_index != ist_index)
1316         return 0;
1317
1318     if (of->start_time && ist->pts < of->start_time)
1319         return 0;
1320
1321     return 1;
1322 }
1323
1324 static void do_streamcopy(InputStream *ist, OutputStream *ost, const AVPacket *pkt)
1325 {
1326     OutputFile *of = output_files[ost->file_index];
1327     int64_t ost_tb_start_time = av_rescale_q(of->start_time, AV_TIME_BASE_Q, ost->st->time_base);
1328     AVPicture pict;
1329     AVPacket opkt;
1330
1331     av_init_packet(&opkt);
1332
1333     if ((!ost->frame_number && !(pkt->flags & AV_PKT_FLAG_KEY)) &&
1334         !ost->copy_initial_nonkeyframes)
1335         return;
1336
1337     if (!ost->frame_number && ist->pts < of->start_time &&
1338         !ost->copy_prior_start)
1339         return;
1340
1341     if (of->recording_time != INT64_MAX &&
1342         ist->pts >= of->recording_time + of->start_time) {
1343         close_output_stream(ost);
1344         return;
1345     }
1346
1347     /* force the input stream PTS */
1348     if (ost->st->codec->codec_type == AVMEDIA_TYPE_AUDIO)
1349         audio_size += pkt->size;
1350     else if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO) {
1351         video_size += pkt->size;
1352         ost->sync_opts++;
1353     } else if (ost->st->codec->codec_type == AVMEDIA_TYPE_SUBTITLE) {
1354         subtitle_size += pkt->size;
1355     }
1356
1357     if (pkt->pts != AV_NOPTS_VALUE)
1358         opkt.pts = av_rescale_q(pkt->pts, ist->st->time_base, ost->st->time_base) - ost_tb_start_time;
1359     else
1360         opkt.pts = AV_NOPTS_VALUE;
1361
1362     if (pkt->dts == AV_NOPTS_VALUE)
1363         opkt.dts = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ost->st->time_base);
1364     else
1365         opkt.dts = av_rescale_q(pkt->dts, ist->st->time_base, ost->st->time_base);
1366     opkt.dts -= ost_tb_start_time;
1367
1368     opkt.duration = av_rescale_q(pkt->duration, ist->st->time_base, ost->st->time_base);
1369     opkt.flags    = pkt->flags;
1370
1371     // FIXME remove the following 2 lines they shall be replaced by the bitstream filters
1372     if (  ost->st->codec->codec_id != AV_CODEC_ID_H264
1373        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG1VIDEO
1374        && ost->st->codec->codec_id != AV_CODEC_ID_MPEG2VIDEO
1375        && ost->st->codec->codec_id != AV_CODEC_ID_VC1
1376        ) {
1377         if (av_parser_change(ist->st->parser, ost->st->codec, &opkt.data, &opkt.size, pkt->data, pkt->size, pkt->flags & AV_PKT_FLAG_KEY))
1378             opkt.destruct = av_destruct_packet;
1379     } else {
1380         opkt.data = pkt->data;
1381         opkt.size = pkt->size;
1382     }
1383
1384     if (ost->st->codec->codec_type == AVMEDIA_TYPE_VIDEO && (of->ctx->oformat->flags & AVFMT_RAWPICTURE)) {
1385         /* store AVPicture in AVPacket, as expected by the output format */
1386         avpicture_fill(&pict, opkt.data, ost->st->codec->pix_fmt, ost->st->codec->width, ost->st->codec->height);
1387         opkt.data = (uint8_t *)&pict;
1388         opkt.size = sizeof(AVPicture);
1389         opkt.flags |= AV_PKT_FLAG_KEY;
1390     }
1391
1392     write_frame(of->ctx, &opkt, ost);
1393     ost->st->codec->frame_number++;
1394     av_free_packet(&opkt);
1395 }
1396
1397 static void rate_emu_sleep(InputStream *ist)
1398 {
1399     if (input_files[ist->file_index]->rate_emu) {
1400         int64_t pts = av_rescale(ist->dts, 1000000, AV_TIME_BASE);
1401         int64_t now = av_gettime() - ist->start;
1402         if (pts > now)
1403             av_usleep(pts - now);
1404     }
1405 }
1406
1407 int guess_input_channel_layout(InputStream *ist)
1408 {
1409     AVCodecContext *dec = ist->st->codec;
1410
1411     if (!dec->channel_layout) {
1412         char layout_name[256];
1413
1414         dec->channel_layout = av_get_default_channel_layout(dec->channels);
1415         if (!dec->channel_layout)
1416             return 0;
1417         av_get_channel_layout_string(layout_name, sizeof(layout_name),
1418                                      dec->channels, dec->channel_layout);
1419         av_log(NULL, AV_LOG_WARNING, "Guessed Channel Layout for  Input Stream "
1420                "#%d.%d : %s\n", ist->file_index, ist->st->index, layout_name);
1421     }
1422     return 1;
1423 }
1424
1425 static int decode_audio(InputStream *ist, AVPacket *pkt, int *got_output)
1426 {
1427     AVFrame *decoded_frame;
1428     AVCodecContext *avctx = ist->st->codec;
1429     int i, ret, resample_changed;
1430     AVRational decoded_frame_tb;
1431
1432     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1433         return AVERROR(ENOMEM);
1434     else
1435         avcodec_get_frame_defaults(ist->decoded_frame);
1436     decoded_frame = ist->decoded_frame;
1437
1438     update_benchmark(NULL);
1439     ret = avcodec_decode_audio4(avctx, decoded_frame, got_output, pkt);
1440     update_benchmark("decode_audio %d.%d", ist->file_index, ist->st->index);
1441
1442     if (ret >= 0 && avctx->sample_rate <= 0) {
1443         av_log(avctx, AV_LOG_ERROR, "Sample rate %d invalid\n", avctx->sample_rate);
1444         ret = AVERROR_INVALIDDATA;
1445     }
1446
1447     if (!*got_output || ret < 0) {
1448         if (!pkt->size) {
1449             for (i = 0; i < ist->nb_filters; i++)
1450                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1451         }
1452         return ret;
1453     }
1454
1455 #if 1
1456     /* increment next_dts to use for the case where the input stream does not
1457        have timestamps or there are multiple frames in the packet */
1458     ist->next_pts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1459                      avctx->sample_rate;
1460     ist->next_dts += ((int64_t)AV_TIME_BASE * decoded_frame->nb_samples) /
1461                      avctx->sample_rate;
1462 #endif
1463
1464     rate_emu_sleep(ist);
1465
1466     resample_changed = ist->resample_sample_fmt     != decoded_frame->format         ||
1467                        ist->resample_channels       != avctx->channels               ||
1468                        ist->resample_channel_layout != decoded_frame->channel_layout ||
1469                        ist->resample_sample_rate    != decoded_frame->sample_rate;
1470     if (resample_changed) {
1471         char layout1[64], layout2[64];
1472
1473         if (!guess_input_channel_layout(ist)) {
1474             av_log(NULL, AV_LOG_FATAL, "Unable to find default channel "
1475                    "layout for Input Stream #%d.%d\n", ist->file_index,
1476                    ist->st->index);
1477             exit(1);
1478         }
1479         decoded_frame->channel_layout = avctx->channel_layout;
1480
1481         av_get_channel_layout_string(layout1, sizeof(layout1), ist->resample_channels,
1482                                      ist->resample_channel_layout);
1483         av_get_channel_layout_string(layout2, sizeof(layout2), avctx->channels,
1484                                      decoded_frame->channel_layout);
1485
1486         av_log(NULL, AV_LOG_INFO,
1487                "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",
1488                ist->file_index, ist->st->index,
1489                ist->resample_sample_rate,  av_get_sample_fmt_name(ist->resample_sample_fmt),
1490                ist->resample_channels, layout1,
1491                decoded_frame->sample_rate, av_get_sample_fmt_name(decoded_frame->format),
1492                avctx->channels, layout2);
1493
1494         ist->resample_sample_fmt     = decoded_frame->format;
1495         ist->resample_sample_rate    = decoded_frame->sample_rate;
1496         ist->resample_channel_layout = decoded_frame->channel_layout;
1497         ist->resample_channels       = avctx->channels;
1498
1499         for (i = 0; i < nb_filtergraphs; i++)
1500             if (ist_in_filtergraph(filtergraphs[i], ist)) {
1501                 FilterGraph *fg = filtergraphs[i];
1502                 int j;
1503                 if (configure_filtergraph(fg) < 0) {
1504                     av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1505                     exit(1);
1506                 }
1507                 for (j = 0; j < fg->nb_outputs; j++) {
1508                     OutputStream *ost = fg->outputs[j]->ost;
1509                     if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
1510                         !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
1511                         av_buffersink_set_frame_size(ost->filter->filter,
1512                                                      ost->st->codec->frame_size);
1513                 }
1514             }
1515     }
1516
1517     /* if the decoder provides a pts, use it instead of the last packet pts.
1518        the decoder could be delaying output by a packet or more. */
1519     if (decoded_frame->pts != AV_NOPTS_VALUE) {
1520         ist->dts = ist->next_dts = ist->pts = ist->next_pts = av_rescale_q(decoded_frame->pts, avctx->time_base, AV_TIME_BASE_Q);
1521         decoded_frame_tb   = avctx->time_base;
1522     } else if (decoded_frame->pkt_pts != AV_NOPTS_VALUE) {
1523         decoded_frame->pts = decoded_frame->pkt_pts;
1524         pkt->pts           = AV_NOPTS_VALUE;
1525         decoded_frame_tb   = ist->st->time_base;
1526     } else if (pkt->pts != AV_NOPTS_VALUE) {
1527         decoded_frame->pts = pkt->pts;
1528         pkt->pts           = AV_NOPTS_VALUE;
1529         decoded_frame_tb   = ist->st->time_base;
1530     }else {
1531         decoded_frame->pts = ist->dts;
1532         decoded_frame_tb   = AV_TIME_BASE_Q;
1533     }
1534     if (decoded_frame->pts != AV_NOPTS_VALUE)
1535         decoded_frame->pts = av_rescale_q(decoded_frame->pts,
1536                                           decoded_frame_tb,
1537                                           (AVRational){1, ist->st->codec->sample_rate});
1538     for (i = 0; i < ist->nb_filters; i++)
1539         av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame,
1540                                AV_BUFFERSRC_FLAG_PUSH);
1541
1542     decoded_frame->pts = AV_NOPTS_VALUE;
1543
1544     return ret;
1545 }
1546
1547 static int decode_video(InputStream *ist, AVPacket *pkt, int *got_output)
1548 {
1549     AVFrame *decoded_frame;
1550     void *buffer_to_free = NULL;
1551     int i, ret = 0, resample_changed;
1552     int64_t best_effort_timestamp;
1553     AVRational *frame_sample_aspect;
1554
1555     if (!ist->decoded_frame && !(ist->decoded_frame = avcodec_alloc_frame()))
1556         return AVERROR(ENOMEM);
1557     else
1558         avcodec_get_frame_defaults(ist->decoded_frame);
1559     decoded_frame = ist->decoded_frame;
1560     pkt->dts  = av_rescale_q(ist->dts, AV_TIME_BASE_Q, ist->st->time_base);
1561
1562     update_benchmark(NULL);
1563     ret = avcodec_decode_video2(ist->st->codec,
1564                                 decoded_frame, got_output, pkt);
1565     update_benchmark("decode_video %d.%d", ist->file_index, ist->st->index);
1566     if (!*got_output || ret < 0) {
1567         if (!pkt->size) {
1568             for (i = 0; i < ist->nb_filters; i++)
1569                 av_buffersrc_add_ref(ist->filters[i]->filter, NULL, 0);
1570         }
1571         return ret;
1572     }
1573
1574     if(ist->top_field_first>=0)
1575         decoded_frame->top_field_first = ist->top_field_first;
1576
1577     best_effort_timestamp= av_frame_get_best_effort_timestamp(decoded_frame);
1578     if(best_effort_timestamp != AV_NOPTS_VALUE)
1579         ist->next_pts = ist->pts = av_rescale_q(decoded_frame->pts = best_effort_timestamp, ist->st->time_base, AV_TIME_BASE_Q);
1580
1581     if (debug_ts) {
1582         av_log(NULL, AV_LOG_INFO, "decoder -> ist_index:%d type:video "
1583                 "frame_pts:%s frame_pts_time:%s best_effort_ts:%"PRId64" best_effort_ts_time:%s keyframe:%d frame_type:%d \n",
1584                 ist->st->index, av_ts2str(decoded_frame->pts),
1585                 av_ts2timestr(decoded_frame->pts, &ist->st->time_base),
1586                 best_effort_timestamp,
1587                 av_ts2timestr(best_effort_timestamp, &ist->st->time_base),
1588                 decoded_frame->key_frame, decoded_frame->pict_type);
1589     }
1590
1591     pkt->size = 0;
1592     pre_process_video_frame(ist, (AVPicture *)decoded_frame, &buffer_to_free);
1593
1594     rate_emu_sleep(ist);
1595
1596     if (ist->st->sample_aspect_ratio.num)
1597         decoded_frame->sample_aspect_ratio = ist->st->sample_aspect_ratio;
1598
1599     resample_changed = ist->resample_width   != decoded_frame->width  ||
1600                        ist->resample_height  != decoded_frame->height ||
1601                        ist->resample_pix_fmt != decoded_frame->format;
1602     if (resample_changed) {
1603         av_log(NULL, AV_LOG_INFO,
1604                "Input stream #%d:%d frame changed from size:%dx%d fmt:%s to size:%dx%d fmt:%s\n",
1605                ist->file_index, ist->st->index,
1606                ist->resample_width,  ist->resample_height,  av_get_pix_fmt_name(ist->resample_pix_fmt),
1607                decoded_frame->width, decoded_frame->height, av_get_pix_fmt_name(decoded_frame->format));
1608
1609         ist->resample_width   = decoded_frame->width;
1610         ist->resample_height  = decoded_frame->height;
1611         ist->resample_pix_fmt = decoded_frame->format;
1612
1613         for (i = 0; i < nb_filtergraphs; i++)
1614             if (ist_in_filtergraph(filtergraphs[i], ist) &&
1615                 configure_filtergraph(filtergraphs[i]) < 0) {
1616                 av_log(NULL, AV_LOG_FATAL, "Error reinitializing filters!\n");
1617                 exit(1);
1618             }
1619     }
1620
1621     frame_sample_aspect= av_opt_ptr(avcodec_get_frame_class(), decoded_frame, "sample_aspect_ratio");
1622     for (i = 0; i < ist->nb_filters; i++) {
1623         int changed =      ist->st->codec->width   != ist->filters[i]->filter->outputs[0]->w
1624                         || ist->st->codec->height  != ist->filters[i]->filter->outputs[0]->h
1625                         || ist->st->codec->pix_fmt != ist->filters[i]->filter->outputs[0]->format;
1626
1627         if (!frame_sample_aspect->num)
1628             *frame_sample_aspect = ist->st->sample_aspect_ratio;
1629         if (ist->dr1 && decoded_frame->type==FF_BUFFER_TYPE_USER && !changed) {
1630             FrameBuffer      *buf = decoded_frame->opaque;
1631             AVFilterBufferRef *fb = avfilter_get_video_buffer_ref_from_arrays(
1632                                         decoded_frame->data, decoded_frame->linesize,
1633                                         AV_PERM_READ | AV_PERM_PRESERVE,
1634                                         ist->st->codec->width, ist->st->codec->height,
1635                                         ist->st->codec->pix_fmt);
1636
1637             avfilter_copy_frame_props(fb, decoded_frame);
1638             fb->buf->priv           = buf;
1639             fb->buf->free           = filter_release_buffer;
1640
1641             av_assert0(buf->refcount>0);
1642             buf->refcount++;
1643             av_buffersrc_add_ref(ist->filters[i]->filter, fb,
1644                                  AV_BUFFERSRC_FLAG_NO_CHECK_FORMAT |
1645                                  AV_BUFFERSRC_FLAG_NO_COPY |
1646                                  AV_BUFFERSRC_FLAG_PUSH);
1647         } else
1648         if(av_buffersrc_add_frame(ist->filters[i]->filter, decoded_frame, AV_BUFFERSRC_FLAG_PUSH)<0) {
1649             av_log(NULL, AV_LOG_FATAL, "Failed to inject frame into filter network\n");
1650             exit(1);
1651         }
1652
1653     }
1654
1655     av_free(buffer_to_free);
1656     return ret;
1657 }
1658
1659 static int transcode_subtitles(InputStream *ist, AVPacket *pkt, int *got_output)
1660 {
1661     AVSubtitle subtitle;
1662     int i, ret = avcodec_decode_subtitle2(ist->st->codec,
1663                                           &subtitle, got_output, pkt);
1664     if (ret < 0 || !*got_output) {
1665         if (!pkt->size)
1666             sub2video_flush(ist);
1667         return ret;
1668     }
1669
1670     if (ist->fix_sub_duration) {
1671         if (ist->prev_sub.got_output) {
1672             int end = av_rescale(subtitle.pts - ist->prev_sub.subtitle.pts,
1673                                  1000, AV_TIME_BASE);
1674             if (end < ist->prev_sub.subtitle.end_display_time) {
1675                 av_log(ist->st->codec, AV_LOG_DEBUG,
1676                        "Subtitle duration reduced from %d to %d\n",
1677                        ist->prev_sub.subtitle.end_display_time, end);
1678                 ist->prev_sub.subtitle.end_display_time = end;
1679             }
1680         }
1681         FFSWAP(int,        *got_output, ist->prev_sub.got_output);
1682         FFSWAP(int,        ret,         ist->prev_sub.ret);
1683         FFSWAP(AVSubtitle, subtitle,    ist->prev_sub.subtitle);
1684     }
1685
1686     sub2video_update(ist, &subtitle);
1687
1688     if (!*got_output || !subtitle.num_rects)
1689         return ret;
1690
1691     rate_emu_sleep(ist);
1692
1693     for (i = 0; i < nb_output_streams; i++) {
1694         OutputStream *ost = output_streams[i];
1695
1696         if (!check_output_constraints(ist, ost) || !ost->encoding_needed)
1697             continue;
1698
1699         do_subtitle_out(output_files[ost->file_index]->ctx, ost, ist, &subtitle);
1700     }
1701
1702     avsubtitle_free(&subtitle);
1703     return ret;
1704 }
1705
1706 /* pkt = NULL means EOF (needed to flush decoder buffers) */
1707 static int output_packet(InputStream *ist, const AVPacket *pkt)
1708 {
1709     int ret = 0, i;
1710     int got_output;
1711
1712     AVPacket avpkt;
1713     if (!ist->saw_first_ts) {
1714         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;
1715         ist->pts = 0;
1716         if (pkt != NULL && pkt->pts != AV_NOPTS_VALUE && !ist->decoding_needed) {
1717             ist->dts += av_rescale_q(pkt->pts, ist->st->time_base, AV_TIME_BASE_Q);
1718             ist->pts = ist->dts; //unused but better to set it to a value thats not totally wrong
1719         }
1720         ist->saw_first_ts = 1;
1721     }
1722
1723     if (ist->next_dts == AV_NOPTS_VALUE)
1724         ist->next_dts = ist->dts;
1725     if (ist->next_pts == AV_NOPTS_VALUE)
1726         ist->next_pts = ist->pts;
1727
1728     if (pkt == NULL) {
1729         /* EOF handling */
1730         av_init_packet(&avpkt);
1731         avpkt.data = NULL;
1732         avpkt.size = 0;
1733         goto handle_eof;
1734     } else {
1735         avpkt = *pkt;
1736     }
1737
1738     if (pkt->dts != AV_NOPTS_VALUE) {
1739         ist->next_dts = ist->dts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1740         if (ist->st->codec->codec_type != AVMEDIA_TYPE_VIDEO || !ist->decoding_needed)
1741             ist->next_pts = ist->pts = av_rescale_q(pkt->dts, ist->st->time_base, AV_TIME_BASE_Q);
1742     }
1743
1744     // while we have more to decode or while the decoder did output something on EOF
1745     while (ist->decoding_needed && (avpkt.size > 0 || (!pkt && got_output))) {
1746         int duration;
1747     handle_eof:
1748
1749         ist->pts = ist->next_pts;
1750         ist->dts = ist->next_dts;
1751
1752         if (avpkt.size && avpkt.size != pkt->size) {
1753             av_log(NULL, ist->showed_multi_packet_warning ? AV_LOG_VERBOSE : AV_LOG_WARNING,
1754                    "Multiple frames in a packet from stream %d\n", pkt->stream_index);
1755             ist->showed_multi_packet_warning = 1;
1756         }
1757
1758         switch (ist->st->codec->codec_type) {
1759         case AVMEDIA_TYPE_AUDIO:
1760             ret = decode_audio    (ist, &avpkt, &got_output);
1761             break;
1762         case AVMEDIA_TYPE_VIDEO:
1763             ret = decode_video    (ist, &avpkt, &got_output);
1764             if (avpkt.duration) {
1765                 duration = av_rescale_q(avpkt.duration, ist->st->time_base, AV_TIME_BASE_Q);
1766             } else if(ist->st->codec->time_base.num != 0 && ist->st->codec->time_base.den != 0) {
1767                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict+1 : ist->st->codec->ticks_per_frame;
1768                 duration = ((int64_t)AV_TIME_BASE *
1769                                 ist->st->codec->time_base.num * ticks) /
1770                                 ist->st->codec->time_base.den;
1771             } else
1772                 duration = 0;
1773
1774             if(ist->dts != AV_NOPTS_VALUE && duration) {
1775                 ist->next_dts += duration;
1776             }else
1777                 ist->next_dts = AV_NOPTS_VALUE;
1778
1779             if (got_output)
1780                 ist->next_pts += duration; //FIXME the duration is not correct in some cases
1781             break;
1782         case AVMEDIA_TYPE_SUBTITLE:
1783             ret = transcode_subtitles(ist, &avpkt, &got_output);
1784             break;
1785         default:
1786             return -1;
1787         }
1788
1789         if (ret < 0)
1790             return ret;
1791
1792         avpkt.dts=
1793         avpkt.pts= AV_NOPTS_VALUE;
1794
1795         // touch data and size only if not EOF
1796         if (pkt) {
1797             if(ist->st->codec->codec_type != AVMEDIA_TYPE_AUDIO)
1798                 ret = avpkt.size;
1799             avpkt.data += ret;
1800             avpkt.size -= ret;
1801         }
1802         if (!got_output) {
1803             continue;
1804         }
1805     }
1806
1807     /* handle stream copy */
1808     if (!ist->decoding_needed) {
1809         rate_emu_sleep(ist);
1810         ist->dts = ist->next_dts;
1811         switch (ist->st->codec->codec_type) {
1812         case AVMEDIA_TYPE_AUDIO:
1813             ist->next_dts += ((int64_t)AV_TIME_BASE * ist->st->codec->frame_size) /
1814                              ist->st->codec->sample_rate;
1815             break;
1816         case AVMEDIA_TYPE_VIDEO:
1817             if (pkt->duration) {
1818                 ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
1819             } else if(ist->st->codec->time_base.num != 0) {
1820                 int ticks= ist->st->parser ? ist->st->parser->repeat_pict + 1 : ist->st->codec->ticks_per_frame;
1821                 ist->next_dts += ((int64_t)AV_TIME_BASE *
1822                                   ist->st->codec->time_base.num * ticks) /
1823                                   ist->st->codec->time_base.den;
1824             }
1825             break;
1826         }
1827         ist->pts = ist->dts;
1828         ist->next_pts = ist->next_dts;
1829     }
1830     for (i = 0; pkt && i < nb_output_streams; i++) {
1831         OutputStream *ost = output_streams[i];
1832
1833         if (!check_output_constraints(ist, ost) || ost->encoding_needed)
1834             continue;
1835
1836         do_streamcopy(ist, ost, pkt);
1837     }
1838
1839     return 0;
1840 }
1841
1842 static void print_sdp(void)
1843 {
1844     char sdp[2048];
1845     int i;
1846     AVFormatContext **avc = av_malloc(sizeof(*avc) * nb_output_files);
1847
1848     if (!avc)
1849         exit(1);
1850     for (i = 0; i < nb_output_files; i++)
1851         avc[i] = output_files[i]->ctx;
1852
1853     av_sdp_create(avc, nb_output_files, sdp, sizeof(sdp));
1854     printf("SDP:\n%s\n", sdp);
1855     fflush(stdout);
1856     av_freep(&avc);
1857 }
1858
1859 static int init_input_stream(int ist_index, char *error, int error_len)
1860 {
1861     InputStream *ist = input_streams[ist_index];
1862
1863     if (ist->decoding_needed) {
1864         AVCodec *codec = ist->dec;
1865         if (!codec) {
1866             snprintf(error, error_len, "Decoder (codec %s) not found for input stream #%d:%d",
1867                     avcodec_get_name(ist->st->codec->codec_id), ist->file_index, ist->st->index);
1868             return AVERROR(EINVAL);
1869         }
1870
1871         ist->dr1 = (codec->capabilities & CODEC_CAP_DR1) && !do_deinterlace;
1872         if (codec->type == AVMEDIA_TYPE_VIDEO && ist->dr1) {
1873             ist->st->codec->get_buffer     = codec_get_buffer;
1874             ist->st->codec->release_buffer = codec_release_buffer;
1875             ist->st->codec->opaque         = &ist->buffer_pool;
1876         }
1877
1878         if (!av_dict_get(ist->opts, "threads", NULL, 0))
1879             av_dict_set(&ist->opts, "threads", "auto", 0);
1880         if (avcodec_open2(ist->st->codec, codec, &ist->opts) < 0) {
1881             snprintf(error, error_len, "Error while opening decoder for input stream #%d:%d",
1882                     ist->file_index, ist->st->index);
1883             return AVERROR(EINVAL);
1884         }
1885         assert_codec_experimental(ist->st->codec, 0);
1886         assert_avoptions(ist->opts);
1887     }
1888
1889     ist->next_pts = AV_NOPTS_VALUE;
1890     ist->next_dts = AV_NOPTS_VALUE;
1891     ist->is_start = 1;
1892
1893     return 0;
1894 }
1895
1896 static InputStream *get_input_stream(OutputStream *ost)
1897 {
1898     if (ost->source_index >= 0)
1899         return input_streams[ost->source_index];
1900     return NULL;
1901 }
1902
1903 static void parse_forced_key_frames(char *kf, OutputStream *ost,
1904                                     AVCodecContext *avctx)
1905 {
1906     char *p;
1907     int n = 1, i;
1908     int64_t t;
1909
1910     for (p = kf; *p; p++)
1911         if (*p == ',')
1912             n++;
1913     ost->forced_kf_count = n;
1914     ost->forced_kf_pts   = av_malloc(sizeof(*ost->forced_kf_pts) * n);
1915     if (!ost->forced_kf_pts) {
1916         av_log(NULL, AV_LOG_FATAL, "Could not allocate forced key frames array.\n");
1917         exit(1);
1918     }
1919
1920     p = kf;
1921     for (i = 0; i < n; i++) {
1922         char *next = strchr(p, ',');
1923
1924         if (next)
1925             *next++ = 0;
1926
1927         t = parse_time_or_die("force_key_frames", p, 1);
1928         ost->forced_kf_pts[i] = av_rescale_q(t, AV_TIME_BASE_Q, avctx->time_base);
1929
1930         p = next;
1931     }
1932 }
1933
1934 static void report_new_stream(int input_index, AVPacket *pkt)
1935 {
1936     InputFile *file = input_files[input_index];
1937     AVStream *st = file->ctx->streams[pkt->stream_index];
1938
1939     if (pkt->stream_index < file->nb_streams_warn)
1940         return;
1941     av_log(file->ctx, AV_LOG_WARNING,
1942            "New %s stream %d:%d at pos:%"PRId64" and DTS:%ss\n",
1943            av_get_media_type_string(st->codec->codec_type),
1944            input_index, pkt->stream_index,
1945            pkt->pos, av_ts2timestr(pkt->dts, &st->time_base));
1946     file->nb_streams_warn = pkt->stream_index + 1;
1947 }
1948
1949 static int transcode_init(void)
1950 {
1951     int ret = 0, i, j, k;
1952     AVFormatContext *oc;
1953     AVCodecContext *codec;
1954     OutputStream *ost;
1955     InputStream *ist;
1956     char error[1024];
1957     int want_sdp = 1;
1958
1959     /* init framerate emulation */
1960     for (i = 0; i < nb_input_files; i++) {
1961         InputFile *ifile = input_files[i];
1962         if (ifile->rate_emu)
1963             for (j = 0; j < ifile->nb_streams; j++)
1964                 input_streams[j + ifile->ist_index]->start = av_gettime();
1965     }
1966
1967     /* output stream init */
1968     for (i = 0; i < nb_output_files; i++) {
1969         oc = output_files[i]->ctx;
1970         if (!oc->nb_streams && !(oc->oformat->flags & AVFMT_NOSTREAMS)) {
1971             av_dump_format(oc, i, oc->filename, 1);
1972             av_log(NULL, AV_LOG_ERROR, "Output file #%d does not contain any stream\n", i);
1973             return AVERROR(EINVAL);
1974         }
1975     }
1976
1977     /* init complex filtergraphs */
1978     for (i = 0; i < nb_filtergraphs; i++)
1979         if ((ret = avfilter_graph_config(filtergraphs[i]->graph, NULL)) < 0)
1980             return ret;
1981
1982     /* for each output stream, we compute the right encoding parameters */
1983     for (i = 0; i < nb_output_streams; i++) {
1984         AVCodecContext *icodec = NULL;
1985         ost = output_streams[i];
1986         oc  = output_files[ost->file_index]->ctx;
1987         ist = get_input_stream(ost);
1988
1989         if (ost->attachment_filename)
1990             continue;
1991
1992         codec  = ost->st->codec;
1993
1994         if (ist) {
1995             icodec = ist->st->codec;
1996
1997             ost->st->disposition          = ist->st->disposition;
1998             codec->bits_per_raw_sample    = icodec->bits_per_raw_sample;
1999             codec->chroma_sample_location = icodec->chroma_sample_location;
2000         }
2001
2002         if (ost->stream_copy) {
2003             uint64_t extra_size;
2004
2005             av_assert0(ist && !ost->filter);
2006
2007             extra_size = (uint64_t)icodec->extradata_size + FF_INPUT_BUFFER_PADDING_SIZE;
2008
2009             if (extra_size > INT_MAX) {
2010                 return AVERROR(EINVAL);
2011             }
2012
2013             /* if stream_copy is selected, no need to decode or encode */
2014             codec->codec_id   = icodec->codec_id;
2015             codec->codec_type = icodec->codec_type;
2016
2017             if (!codec->codec_tag) {
2018                 if (!oc->oformat->codec_tag ||
2019                      av_codec_get_id (oc->oformat->codec_tag, icodec->codec_tag) == codec->codec_id ||
2020                      av_codec_get_tag(oc->oformat->codec_tag, icodec->codec_id) <= 0)
2021                     codec->codec_tag = icodec->codec_tag;
2022             }
2023
2024             codec->bit_rate       = icodec->bit_rate;
2025             codec->rc_max_rate    = icodec->rc_max_rate;
2026             codec->rc_buffer_size = icodec->rc_buffer_size;
2027             codec->field_order    = icodec->field_order;
2028             codec->extradata      = av_mallocz(extra_size);
2029             if (!codec->extradata) {
2030                 return AVERROR(ENOMEM);
2031             }
2032             memcpy(codec->extradata, icodec->extradata, icodec->extradata_size);
2033             codec->extradata_size= icodec->extradata_size;
2034             codec->bits_per_coded_sample  = icodec->bits_per_coded_sample;
2035
2036             codec->time_base = ist->st->time_base;
2037             /*
2038              * Avi is a special case here because it supports variable fps but
2039              * having the fps and timebase differe significantly adds quite some
2040              * overhead
2041              */
2042             if(!strcmp(oc->oformat->name, "avi")) {
2043                 if ( copy_tb<0 && av_q2d(ist->st->r_frame_rate) >= av_q2d(ist->st->avg_frame_rate)
2044                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(ist->st->time_base)
2045                                && 0.5/av_q2d(ist->st->r_frame_rate) > av_q2d(icodec->time_base)
2046                                && av_q2d(ist->st->time_base) < 1.0/500 && av_q2d(icodec->time_base) < 1.0/500
2047                      || copy_tb==2){
2048                     codec->time_base.num = ist->st->r_frame_rate.den;
2049                     codec->time_base.den = 2*ist->st->r_frame_rate.num;
2050                     codec->ticks_per_frame = 2;
2051                 } else if (   copy_tb<0 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > 2*av_q2d(ist->st->time_base)
2052                                  && av_q2d(ist->st->time_base) < 1.0/500
2053                     || copy_tb==0){
2054                     codec->time_base = icodec->time_base;
2055                     codec->time_base.num *= icodec->ticks_per_frame;
2056                     codec->time_base.den *= 2;
2057                     codec->ticks_per_frame = 2;
2058                 }
2059             } else if(!(oc->oformat->flags & AVFMT_VARIABLE_FPS)
2060                       && strcmp(oc->oformat->name, "mov") && strcmp(oc->oformat->name, "mp4") && strcmp(oc->oformat->name, "3gp")
2061                       && strcmp(oc->oformat->name, "3g2") && strcmp(oc->oformat->name, "psp") && strcmp(oc->oformat->name, "ipod")
2062                       && strcmp(oc->oformat->name, "f4v")
2063             ) {
2064                 if(   copy_tb<0 && icodec->time_base.den
2065                                 && av_q2d(icodec->time_base)*icodec->ticks_per_frame > av_q2d(ist->st->time_base)
2066                                 && av_q2d(ist->st->time_base) < 1.0/500
2067                    || copy_tb==0){
2068                     codec->time_base = icodec->time_base;
2069                     codec->time_base.num *= icodec->ticks_per_frame;
2070                 }
2071             }
2072
2073             if(ost->frame_rate.num)
2074                 codec->time_base = av_inv_q(ost->frame_rate);
2075
2076             av_reduce(&codec->time_base.num, &codec->time_base.den,
2077                         codec->time_base.num, codec->time_base.den, INT_MAX);
2078
2079             switch (codec->codec_type) {
2080             case AVMEDIA_TYPE_AUDIO:
2081                 if (audio_volume != 256) {
2082                     av_log(NULL, AV_LOG_FATAL, "-acodec copy and -vol are incompatible (frames are not decoded)\n");
2083                     exit(1);
2084                 }
2085                 codec->channel_layout     = icodec->channel_layout;
2086                 codec->sample_rate        = icodec->sample_rate;
2087                 codec->channels           = icodec->channels;
2088                 codec->frame_size         = icodec->frame_size;
2089                 codec->audio_service_type = icodec->audio_service_type;
2090                 codec->block_align        = icodec->block_align;
2091                 if((codec->block_align == 1 || codec->block_align == 1152) && codec->codec_id == AV_CODEC_ID_MP3)
2092                     codec->block_align= 0;
2093                 if(codec->codec_id == AV_CODEC_ID_AC3)
2094                     codec->block_align= 0;
2095                 break;
2096             case AVMEDIA_TYPE_VIDEO:
2097                 codec->pix_fmt            = icodec->pix_fmt;
2098                 codec->width              = icodec->width;
2099                 codec->height             = icodec->height;
2100                 codec->has_b_frames       = icodec->has_b_frames;
2101                 if (!codec->sample_aspect_ratio.num) {
2102                     codec->sample_aspect_ratio   =
2103                     ost->st->sample_aspect_ratio =
2104                         ist->st->sample_aspect_ratio.num ? ist->st->sample_aspect_ratio :
2105                         ist->st->codec->sample_aspect_ratio.num ?
2106                         ist->st->codec->sample_aspect_ratio : (AVRational){0, 1};
2107                 }
2108                 ost->st->avg_frame_rate = ist->st->avg_frame_rate;
2109                 break;
2110             case AVMEDIA_TYPE_SUBTITLE:
2111                 codec->width  = icodec->width;
2112                 codec->height = icodec->height;
2113                 break;
2114             case AVMEDIA_TYPE_DATA:
2115             case AVMEDIA_TYPE_ATTACHMENT:
2116                 break;
2117             default:
2118                 abort();
2119             }
2120         } else {
2121             if (!ost->enc)
2122                 ost->enc = avcodec_find_encoder(codec->codec_id);
2123             if (!ost->enc) {
2124                 /* should only happen when a default codec is not present. */
2125                 snprintf(error, sizeof(error), "Encoder (codec %s) not found for output stream #%d:%d",
2126                          avcodec_get_name(ost->st->codec->codec_id), ost->file_index, ost->index);
2127                 ret = AVERROR(EINVAL);
2128                 goto dump_format;
2129             }
2130
2131             if (ist)
2132                 ist->decoding_needed++;
2133             ost->encoding_needed = 1;
2134
2135             if (!ost->filter &&
2136                 (codec->codec_type == AVMEDIA_TYPE_VIDEO ||
2137                  codec->codec_type == AVMEDIA_TYPE_AUDIO)) {
2138                     FilterGraph *fg;
2139                     fg = init_simple_filtergraph(ist, ost);
2140                     if (configure_filtergraph(fg)) {
2141                         av_log(NULL, AV_LOG_FATAL, "Error opening filters!\n");
2142                         exit(1);
2143                     }
2144             }
2145
2146             if (codec->codec_type == AVMEDIA_TYPE_VIDEO) {
2147                 if (ost->filter && !ost->frame_rate.num)
2148                     ost->frame_rate = av_buffersink_get_frame_rate(ost->filter->filter);
2149                 if (ist && !ost->frame_rate.num)
2150                     ost->frame_rate = ist->framerate;
2151                 if (ist && !ost->frame_rate.num)
2152                     ost->frame_rate = ist->st->r_frame_rate.num ? ist->st->r_frame_rate : (AVRational){25, 1};
2153 //                    ost->frame_rate = ist->st->avg_frame_rate.num ? ist->st->avg_frame_rate : (AVRational){25, 1};
2154                 if (ost->enc && ost->enc->supported_framerates && !ost->force_fps) {
2155                     int idx = av_find_nearest_q_idx(ost->frame_rate, ost->enc->supported_framerates);
2156                     ost->frame_rate = ost->enc->supported_framerates[idx];
2157                 }
2158             }
2159
2160             switch (codec->codec_type) {
2161             case AVMEDIA_TYPE_AUDIO:
2162                 codec->sample_fmt     = ost->filter->filter->inputs[0]->format;
2163                 codec->sample_rate    = ost->filter->filter->inputs[0]->sample_rate;
2164                 codec->channel_layout = ost->filter->filter->inputs[0]->channel_layout;
2165                 codec->channels       = av_get_channel_layout_nb_channels(codec->channel_layout);
2166                 codec->time_base      = (AVRational){ 1, codec->sample_rate };
2167                 break;
2168             case AVMEDIA_TYPE_VIDEO:
2169                 codec->time_base = av_inv_q(ost->frame_rate);
2170                 if (ost->filter && !(codec->time_base.num && codec->time_base.den))
2171                     codec->time_base = ost->filter->filter->inputs[0]->time_base;
2172                 if (   av_q2d(codec->time_base) < 0.001 && video_sync_method != VSYNC_PASSTHROUGH
2173                    && (video_sync_method == VSYNC_CFR || (video_sync_method == VSYNC_AUTO && !(oc->oformat->flags & AVFMT_VARIABLE_FPS)))){
2174                     av_log(oc, AV_LOG_WARNING, "Frame rate very high for a muxer not efficiently supporting it.\n"
2175                                                "Please consider specifying a lower framerate, a different muxer or -vsync 2\n");
2176                 }
2177                 for (j = 0; j < ost->forced_kf_count; j++)
2178                     ost->forced_kf_pts[j] = av_rescale_q(ost->forced_kf_pts[j],
2179                                                          AV_TIME_BASE_Q,
2180                                                          codec->time_base);
2181
2182                 codec->width  = ost->filter->filter->inputs[0]->w;
2183                 codec->height = ost->filter->filter->inputs[0]->h;
2184                 codec->sample_aspect_ratio = ost->st->sample_aspect_ratio =
2185                     ost->frame_aspect_ratio ? // overridden by the -aspect cli option
2186                     av_d2q(ost->frame_aspect_ratio * codec->height/codec->width, 255) :
2187                     ost->filter->filter->inputs[0]->sample_aspect_ratio;
2188                 codec->pix_fmt = ost->filter->filter->inputs[0]->format;
2189
2190                 if (!icodec ||
2191                     codec->width   != icodec->width  ||
2192                     codec->height  != icodec->height ||
2193                     codec->pix_fmt != icodec->pix_fmt) {
2194                     codec->bits_per_raw_sample = frame_bits_per_raw_sample;
2195                 }
2196
2197                 if (ost->forced_keyframes)
2198                     parse_forced_key_frames(ost->forced_keyframes, ost,
2199                                             ost->st->codec);
2200                 break;
2201             case AVMEDIA_TYPE_SUBTITLE:
2202                 codec->time_base = (AVRational){1, 1000};
2203                 if (!codec->width) {
2204                     codec->width     = input_streams[ost->source_index]->st->codec->width;
2205                     codec->height    = input_streams[ost->source_index]->st->codec->height;
2206                 }
2207                 break;
2208             default:
2209                 abort();
2210                 break;
2211             }
2212             /* two pass mode */
2213             if (codec->flags & (CODEC_FLAG_PASS1 | CODEC_FLAG_PASS2)) {
2214                 char logfilename[1024];
2215                 FILE *f;
2216
2217                 snprintf(logfilename, sizeof(logfilename), "%s-%d.log",
2218                          ost->logfile_prefix ? ost->logfile_prefix :
2219                                                DEFAULT_PASS_LOGFILENAME_PREFIX,
2220                          i);
2221                 if (!strcmp(ost->enc->name, "libx264")) {
2222                     av_dict_set(&ost->opts, "stats", logfilename, AV_DICT_DONT_OVERWRITE);
2223                 } else {
2224                     if (codec->flags & CODEC_FLAG_PASS2) {
2225                         char  *logbuffer;
2226                         size_t logbuffer_size;
2227                         if (cmdutils_read_file(logfilename, &logbuffer, &logbuffer_size) < 0) {
2228                             av_log(NULL, AV_LOG_FATAL, "Error reading log file '%s' for pass-2 encoding\n",
2229                                    logfilename);
2230                             exit(1);
2231                         }
2232                         codec->stats_in = logbuffer;
2233                     }
2234                     if (codec->flags & CODEC_FLAG_PASS1) {
2235                         f = fopen(logfilename, "wb");
2236                         if (!f) {
2237                             av_log(NULL, AV_LOG_FATAL, "Cannot write log file '%s' for pass-1 encoding: %s\n",
2238                                 logfilename, strerror(errno));
2239                             exit(1);
2240                         }
2241                         ost->logfile = f;
2242                     }
2243                 }
2244             }
2245         }
2246     }
2247
2248     /* open each encoder */
2249     for (i = 0; i < nb_output_streams; i++) {
2250         ost = output_streams[i];
2251         if (ost->encoding_needed) {
2252             AVCodec      *codec = ost->enc;
2253             AVCodecContext *dec = NULL;
2254
2255             if ((ist = get_input_stream(ost)))
2256                 dec = ist->st->codec;
2257             if (dec && dec->subtitle_header) {
2258                 /* ASS code assumes this buffer is null terminated so add extra byte. */
2259                 ost->st->codec->subtitle_header = av_mallocz(dec->subtitle_header_size + 1);
2260                 if (!ost->st->codec->subtitle_header) {
2261                     ret = AVERROR(ENOMEM);
2262                     goto dump_format;
2263                 }
2264                 memcpy(ost->st->codec->subtitle_header, dec->subtitle_header, dec->subtitle_header_size);
2265                 ost->st->codec->subtitle_header_size = dec->subtitle_header_size;
2266             }
2267             if (!av_dict_get(ost->opts, "threads", NULL, 0))
2268                 av_dict_set(&ost->opts, "threads", "auto", 0);
2269             if (avcodec_open2(ost->st->codec, codec, &ost->opts) < 0) {
2270                 snprintf(error, sizeof(error), "Error while opening encoder for output stream #%d:%d - maybe incorrect parameters such as bit_rate, rate, width or height",
2271                         ost->file_index, ost->index);
2272                 ret = AVERROR(EINVAL);
2273                 goto dump_format;
2274             }
2275             if (ost->enc->type == AVMEDIA_TYPE_AUDIO &&
2276                 !(ost->enc->capabilities & CODEC_CAP_VARIABLE_FRAME_SIZE))
2277                 av_buffersink_set_frame_size(ost->filter->filter,
2278                                              ost->st->codec->frame_size);
2279             assert_codec_experimental(ost->st->codec, 1);
2280             assert_avoptions(ost->opts);
2281             if (ost->st->codec->bit_rate && ost->st->codec->bit_rate < 1000)
2282                 av_log(NULL, AV_LOG_WARNING, "The bitrate parameter is set too low."
2283                                              " It takes bits/s as argument, not kbits/s\n");
2284             extra_size += ost->st->codec->extradata_size;
2285
2286             if (ost->st->codec->me_threshold)
2287                 input_streams[ost->source_index]->st->codec->debug |= FF_DEBUG_MV;
2288         }
2289     }
2290
2291     /* init input streams */
2292     for (i = 0; i < nb_input_streams; i++)
2293         if ((ret = init_input_stream(i, error, sizeof(error))) < 0)
2294             goto dump_format;
2295
2296     /* discard unused programs */
2297     for (i = 0; i < nb_input_files; i++) {
2298         InputFile *ifile = input_files[i];
2299         for (j = 0; j < ifile->ctx->nb_programs; j++) {
2300             AVProgram *p = ifile->ctx->programs[j];
2301             int discard  = AVDISCARD_ALL;
2302
2303             for (k = 0; k < p->nb_stream_indexes; k++)
2304                 if (!input_streams[ifile->ist_index + p->stream_index[k]]->discard) {
2305                     discard = AVDISCARD_DEFAULT;
2306                     break;
2307                 }
2308             p->discard = discard;
2309         }
2310     }
2311
2312     /* open files and write file headers */
2313     for (i = 0; i < nb_output_files; i++) {
2314         oc = output_files[i]->ctx;
2315         oc->interrupt_callback = int_cb;
2316         if ((ret = avformat_write_header(oc, &output_files[i]->opts)) < 0) {
2317             char errbuf[128];
2318             const char *errbuf_ptr = errbuf;
2319             if (av_strerror(ret, errbuf, sizeof(errbuf)) < 0)
2320                 errbuf_ptr = strerror(AVUNERROR(ret));
2321             snprintf(error, sizeof(error), "Could not write header for output file #%d (incorrect codec parameters ?): %s", i, errbuf_ptr);
2322             ret = AVERROR(EINVAL);
2323             goto dump_format;
2324         }
2325 //         assert_avoptions(output_files[i]->opts);
2326         if (strcmp(oc->oformat->name, "rtp")) {
2327             want_sdp = 0;
2328         }
2329     }
2330
2331  dump_format:
2332     /* dump the file output parameters - cannot be done before in case
2333        of stream copy */
2334     for (i = 0; i < nb_output_files; i++) {
2335         av_dump_format(output_files[i]->ctx, i, output_files[i]->ctx->filename, 1);
2336     }
2337
2338     /* dump the stream mapping */
2339     av_log(NULL, AV_LOG_INFO, "Stream mapping:\n");
2340     for (i = 0; i < nb_input_streams; i++) {
2341         ist = input_streams[i];
2342
2343         for (j = 0; j < ist->nb_filters; j++) {
2344             if (ist->filters[j]->graph->graph_desc) {
2345                 av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d (%s) -> %s",
2346                        ist->file_index, ist->st->index, ist->dec ? ist->dec->name : "?",
2347                        ist->filters[j]->name);
2348                 if (nb_filtergraphs > 1)
2349                     av_log(NULL, AV_LOG_INFO, " (graph %d)", ist->filters[j]->graph->index);
2350                 av_log(NULL, AV_LOG_INFO, "\n");
2351             }
2352         }
2353     }
2354
2355     for (i = 0; i < nb_output_streams; i++) {
2356         ost = output_streams[i];
2357
2358         if (ost->attachment_filename) {
2359             /* an attached file */
2360             av_log(NULL, AV_LOG_INFO, "  File %s -> Stream #%d:%d\n",
2361                    ost->attachment_filename, ost->file_index, ost->index);
2362             continue;
2363         }
2364
2365         if (ost->filter && ost->filter->graph->graph_desc) {
2366             /* output from a complex graph */
2367             av_log(NULL, AV_LOG_INFO, "  %s", ost->filter->name);
2368             if (nb_filtergraphs > 1)
2369                 av_log(NULL, AV_LOG_INFO, " (graph %d)", ost->filter->graph->index);
2370
2371             av_log(NULL, AV_LOG_INFO, " -> Stream #%d:%d (%s)\n", ost->file_index,
2372                    ost->index, ost->enc ? ost->enc->name : "?");
2373             continue;
2374         }
2375
2376         av_log(NULL, AV_LOG_INFO, "  Stream #%d:%d -> #%d:%d",
2377                input_streams[ost->source_index]->file_index,
2378                input_streams[ost->source_index]->st->index,
2379                ost->file_index,
2380                ost->index);
2381         if (ost->sync_ist != input_streams[ost->source_index])
2382             av_log(NULL, AV_LOG_INFO, " [sync #%d:%d]",
2383                    ost->sync_ist->file_index,
2384                    ost->sync_ist->st->index);
2385         if (ost->stream_copy)
2386             av_log(NULL, AV_LOG_INFO, " (copy)");
2387         else
2388             av_log(NULL, AV_LOG_INFO, " (%s -> %s)", input_streams[ost->source_index]->dec ?
2389                    input_streams[ost->source_index]->dec->name : "?",
2390                    ost->enc ? ost->enc->name : "?");
2391         av_log(NULL, AV_LOG_INFO, "\n");
2392     }
2393
2394     if (ret) {
2395         av_log(NULL, AV_LOG_ERROR, "%s\n", error);
2396         return ret;
2397     }
2398
2399     if (want_sdp) {
2400         print_sdp();
2401     }
2402
2403     return 0;
2404 }
2405
2406 /**
2407  * @return 1 if there are still streams where more output is wanted,
2408  *         0 otherwise
2409  */
2410 static int need_output(void)
2411 {
2412     int i;
2413
2414     for (i = 0; i < nb_output_streams; i++) {
2415         OutputStream *ost    = output_streams[i];
2416         OutputFile *of       = output_files[ost->file_index];
2417         AVFormatContext *os  = output_files[ost->file_index]->ctx;
2418
2419         if (ost->finished ||
2420             (os->pb && avio_tell(os->pb) >= of->limit_filesize))
2421             continue;
2422         if (ost->frame_number >= ost->max_frames) {
2423             int j;
2424             for (j = 0; j < of->ctx->nb_streams; j++)
2425                 close_output_stream(output_streams[of->ost_index + j]);
2426             continue;
2427         }
2428
2429         return 1;
2430     }
2431
2432     return 0;
2433 }
2434
2435 /**
2436  * Select the output stream to process.
2437  *
2438  * @return  selected output stream, or NULL if none available
2439  */
2440 static OutputStream *choose_output(void)
2441 {
2442     int i;
2443     int64_t opts_min = INT64_MAX;
2444     OutputStream *ost_min = NULL;
2445
2446     for (i = 0; i < nb_output_streams; i++) {
2447         OutputStream *ost = output_streams[i];
2448         int64_t opts = av_rescale_q(ost->st->cur_dts, ost->st->time_base,
2449                                     AV_TIME_BASE_Q);
2450         if (!ost->unavailable && !ost->finished && opts < opts_min) {
2451             opts_min = opts;
2452             ost_min  = ost;
2453         }
2454     }
2455     return ost_min;
2456 }
2457
2458 static int check_keyboard_interaction(int64_t cur_time)
2459 {
2460     int i, ret, key;
2461     static int64_t last_time;
2462     if (received_nb_signals)
2463         return AVERROR_EXIT;
2464     /* read_key() returns 0 on EOF */
2465     if(cur_time - last_time >= 100000 && !run_as_daemon){
2466         key =  read_key();
2467         last_time = cur_time;
2468     }else
2469         key = -1;
2470     if (key == 'q')
2471         return AVERROR_EXIT;
2472     if (key == '+') av_log_set_level(av_log_get_level()+10);
2473     if (key == '-') av_log_set_level(av_log_get_level()-10);
2474     if (key == 's') qp_hist     ^= 1;
2475     if (key == 'h'){
2476         if (do_hex_dump){
2477             do_hex_dump = do_pkt_dump = 0;
2478         } else if(do_pkt_dump){
2479             do_hex_dump = 1;
2480         } else
2481             do_pkt_dump = 1;
2482         av_log_set_level(AV_LOG_DEBUG);
2483     }
2484     if (key == 'c' || key == 'C'){
2485         char buf[4096], target[64], command[256], arg[256] = {0};
2486         double time;
2487         int k, n = 0;
2488         fprintf(stderr, "\nEnter command: <target> <time> <command>[ <argument>]\n");
2489         i = 0;
2490         while ((k = read_key()) != '\n' && k != '\r' && i < sizeof(buf)-1)
2491             if (k > 0)
2492                 buf[i++] = k;
2493         buf[i] = 0;
2494         if (k > 0 &&
2495             (n = sscanf(buf, "%63[^ ] %lf %255[^ ] %255[^\n]", target, &time, command, arg)) >= 3) {
2496             av_log(NULL, AV_LOG_DEBUG, "Processing command target:%s time:%f command:%s arg:%s",
2497                    target, time, command, arg);
2498             for (i = 0; i < nb_filtergraphs; i++) {
2499                 FilterGraph *fg = filtergraphs[i];
2500                 if (fg->graph) {
2501                     if (time < 0) {
2502                         ret = avfilter_graph_send_command(fg->graph, target, command, arg, buf, sizeof(buf),
2503                                                           key == 'c' ? AVFILTER_CMD_FLAG_ONE : 0);
2504                         fprintf(stderr, "Command reply for stream %d: ret:%d res:%s\n", i, ret, buf);
2505                     } else {
2506                         ret = avfilter_graph_queue_command(fg->graph, target, command, arg, 0, time);
2507                     }
2508                 }
2509             }
2510         } else {
2511             av_log(NULL, AV_LOG_ERROR,
2512                    "Parse error, at least 3 arguments were expected, "
2513                    "only %d given in string '%s'\n", n, buf);
2514         }
2515     }
2516     if (key == 'd' || key == 'D'){
2517         int debug=0;
2518         if(key == 'D') {
2519             debug = input_streams[0]->st->codec->debug<<1;
2520             if(!debug) debug = 1;
2521             while(debug & (FF_DEBUG_DCT_COEFF|FF_DEBUG_VIS_QP|FF_DEBUG_VIS_MB_TYPE)) //unsupported, would just crash
2522                 debug += debug;
2523         }else
2524             if(scanf("%d", &debug)!=1)
2525                 fprintf(stderr,"error parsing debug value\n");
2526         for(i=0;i<nb_input_streams;i++) {
2527             input_streams[i]->st->codec->debug = debug;
2528         }
2529         for(i=0;i<nb_output_streams;i++) {
2530             OutputStream *ost = output_streams[i];
2531             ost->st->codec->debug = debug;
2532         }
2533         if(debug) av_log_set_level(AV_LOG_DEBUG);
2534         fprintf(stderr,"debug=%d\n", debug);
2535     }
2536     if (key == '?'){
2537         fprintf(stderr, "key    function\n"
2538                         "?      show this help\n"
2539                         "+      increase verbosity\n"
2540                         "-      decrease verbosity\n"
2541                         "c      Send command to filtergraph\n"
2542                         "D      cycle through available debug modes\n"
2543                         "h      dump packets/hex press to cycle through the 3 states\n"
2544                         "q      quit\n"
2545                         "s      Show QP histogram\n"
2546         );
2547     }
2548     return 0;
2549 }
2550
2551 #if HAVE_PTHREADS
2552 static void *input_thread(void *arg)
2553 {
2554     InputFile *f = arg;
2555     int ret = 0;
2556
2557     while (!transcoding_finished && ret >= 0) {
2558         AVPacket pkt;
2559         ret = av_read_frame(f->ctx, &pkt);
2560
2561         if (ret == AVERROR(EAGAIN)) {
2562             av_usleep(10000);
2563             ret = 0;
2564             continue;
2565         } else if (ret < 0)
2566             break;
2567
2568         pthread_mutex_lock(&f->fifo_lock);
2569         while (!av_fifo_space(f->fifo))
2570             pthread_cond_wait(&f->fifo_cond, &f->fifo_lock);
2571
2572         av_dup_packet(&pkt);
2573         av_fifo_generic_write(f->fifo, &pkt, sizeof(pkt), NULL);
2574
2575         pthread_mutex_unlock(&f->fifo_lock);
2576     }
2577
2578     f->finished = 1;
2579     return NULL;
2580 }
2581
2582 static void free_input_threads(void)
2583 {
2584     int i;
2585
2586     if (nb_input_files == 1)
2587         return;
2588
2589     transcoding_finished = 1;
2590
2591     for (i = 0; i < nb_input_files; i++) {
2592         InputFile *f = input_files[i];
2593         AVPacket pkt;
2594
2595         if (!f->fifo || f->joined)
2596             continue;
2597
2598         pthread_mutex_lock(&f->fifo_lock);
2599         while (av_fifo_size(f->fifo)) {
2600             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2601             av_free_packet(&pkt);
2602         }
2603         pthread_cond_signal(&f->fifo_cond);
2604         pthread_mutex_unlock(&f->fifo_lock);
2605
2606         pthread_join(f->thread, NULL);
2607         f->joined = 1;
2608
2609         while (av_fifo_size(f->fifo)) {
2610             av_fifo_generic_read(f->fifo, &pkt, sizeof(pkt), NULL);
2611             av_free_packet(&pkt);
2612         }
2613         av_fifo_free(f->fifo);
2614     }
2615 }
2616
2617 static int init_input_threads(void)
2618 {
2619     int i, ret;
2620
2621     if (nb_input_files == 1)
2622         return 0;
2623
2624     for (i = 0; i < nb_input_files; i++) {
2625         InputFile *f = input_files[i];
2626
2627         if (!(f->fifo = av_fifo_alloc(8*sizeof(AVPacket))))
2628             return AVERROR(ENOMEM);
2629
2630         pthread_mutex_init(&f->fifo_lock, NULL);
2631         pthread_cond_init (&f->fifo_cond, NULL);
2632
2633         if ((ret = pthread_create(&f->thread, NULL, input_thread, f)))
2634             return AVERROR(ret);
2635     }
2636     return 0;
2637 }
2638
2639 static int get_input_packet_mt(InputFile *f, AVPacket *pkt)
2640 {
2641     int ret = 0;
2642
2643     pthread_mutex_lock(&f->fifo_lock);
2644
2645     if (av_fifo_size(f->fifo)) {
2646         av_fifo_generic_read(f->fifo, pkt, sizeof(*pkt), NULL);
2647         pthread_cond_signal(&f->fifo_cond);
2648     } else {
2649         if (f->finished)
2650             ret = AVERROR_EOF;
2651         else
2652             ret = AVERROR(EAGAIN);
2653     }
2654
2655     pthread_mutex_unlock(&f->fifo_lock);
2656
2657     return ret;
2658 }
2659 #endif
2660
2661 static int get_input_packet(InputFile *f, AVPacket *pkt)
2662 {
2663 #if HAVE_PTHREADS
2664     if (nb_input_files > 1)
2665         return get_input_packet_mt(f, pkt);
2666 #endif
2667     return av_read_frame(f->ctx, pkt);
2668 }
2669
2670 static int got_eagain(void)
2671 {
2672     int i;
2673     for (i = 0; i < nb_output_streams; i++)
2674         if (output_streams[i]->unavailable)
2675             return 1;
2676     return 0;
2677 }
2678
2679 static void reset_eagain(void)
2680 {
2681     int i;
2682     for (i = 0; i < nb_input_files; i++)
2683         input_files[i]->eagain = 0;
2684     for (i = 0; i < nb_output_streams; i++)
2685         output_streams[i]->unavailable = 0;
2686 }
2687
2688 /**
2689  * @return
2690  * - 0 -- one packet was read and processed
2691  * - AVERROR(EAGAIN) -- no packets were available for selected file,
2692  *   this function should be called again
2693  * - AVERROR_EOF -- this function should not be called again
2694  */
2695 static int process_input(int file_index)
2696 {
2697     InputFile *ifile = input_files[file_index];
2698     AVFormatContext *is;
2699     InputStream *ist;
2700     AVPacket pkt;
2701     int ret, i, j;
2702
2703     is  = ifile->ctx;
2704     ret = get_input_packet(ifile, &pkt);
2705
2706     if (ret == AVERROR(EAGAIN)) {
2707         ifile->eagain = 1;
2708         return ret;
2709     }
2710     if (ret < 0) {
2711         if (ret != AVERROR_EOF) {
2712             print_error(is->filename, ret);
2713             if (exit_on_error)
2714                 exit(1);
2715         }
2716         ifile->eof_reached = 1;
2717
2718         for (i = 0; i < ifile->nb_streams; i++) {
2719             ist = input_streams[ifile->ist_index + i];
2720             if (ist->decoding_needed)
2721                 output_packet(ist, NULL);
2722
2723             /* mark all outputs that don't go through lavfi as finished */
2724             for (j = 0; j < nb_output_streams; j++) {
2725                 OutputStream *ost = output_streams[j];
2726
2727                 if (ost->source_index == ifile->ist_index + i &&
2728                     (ost->stream_copy || ost->enc->type == AVMEDIA_TYPE_SUBTITLE))
2729                     close_output_stream(ost);
2730             }
2731         }
2732
2733         return AVERROR(EAGAIN);
2734     }
2735
2736     reset_eagain();
2737
2738     if (do_pkt_dump) {
2739         av_pkt_dump_log2(NULL, AV_LOG_DEBUG, &pkt, do_hex_dump,
2740                          is->streams[pkt.stream_index]);
2741     }
2742     /* the following test is needed in case new streams appear
2743        dynamically in stream : we ignore them */
2744     if (pkt.stream_index >= ifile->nb_streams) {
2745         report_new_stream(file_index, &pkt);
2746         goto discard_packet;
2747     }
2748
2749     ist = input_streams[ifile->ist_index + pkt.stream_index];
2750     if (ist->discard)
2751         goto discard_packet;
2752
2753     if(!ist->wrap_correction_done && input_files[file_index]->ctx->start_time != AV_NOPTS_VALUE && ist->st->pts_wrap_bits < 64){
2754         int64_t stime = av_rescale_q(input_files[file_index]->ctx->start_time, AV_TIME_BASE_Q, ist->st->time_base);
2755         int64_t stime2= stime + (1ULL<<ist->st->pts_wrap_bits);
2756         ist->wrap_correction_done = 1;
2757
2758         if(stime2 > stime && pkt.dts != AV_NOPTS_VALUE && pkt.dts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2759             pkt.dts -= 1ULL<<ist->st->pts_wrap_bits;
2760             ist->wrap_correction_done = 0;
2761         }
2762         if(stime2 > stime && pkt.pts != AV_NOPTS_VALUE && pkt.pts > stime + (1LL<<(ist->st->pts_wrap_bits-1))) {
2763             pkt.pts -= 1ULL<<ist->st->pts_wrap_bits;
2764             ist->wrap_correction_done = 0;
2765         }
2766     }
2767
2768     if (pkt.dts != AV_NOPTS_VALUE)
2769         pkt.dts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2770     if (pkt.pts != AV_NOPTS_VALUE)
2771         pkt.pts += av_rescale_q(ifile->ts_offset, AV_TIME_BASE_Q, ist->st->time_base);
2772
2773     if (pkt.pts != AV_NOPTS_VALUE)
2774         pkt.pts *= ist->ts_scale;
2775     if (pkt.dts != AV_NOPTS_VALUE)
2776         pkt.dts *= ist->ts_scale;
2777
2778     if (debug_ts) {
2779         av_log(NULL, AV_LOG_INFO, "demuxer -> ist_index:%d type:%s "
2780                 "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:%"PRId64"\n",
2781                 ifile->ist_index + pkt.stream_index, av_get_media_type_string(ist->st->codec->codec_type),
2782                 av_ts2str(ist->next_dts), av_ts2timestr(ist->next_dts, &AV_TIME_BASE_Q),
2783                 av_ts2str(ist->next_pts), av_ts2timestr(ist->next_pts, &AV_TIME_BASE_Q),
2784                 av_ts2str(pkt.pts), av_ts2timestr(pkt.pts, &ist->st->time_base),
2785                 av_ts2str(pkt.dts), av_ts2timestr(pkt.dts, &ist->st->time_base),
2786                 input_files[ist->file_index]->ts_offset);
2787     }
2788
2789     if (pkt.dts != AV_NOPTS_VALUE && ist->next_dts != AV_NOPTS_VALUE &&
2790         !copy_ts) {
2791         int64_t pkt_dts = av_rescale_q(pkt.dts, ist->st->time_base, AV_TIME_BASE_Q);
2792         int64_t delta   = pkt_dts - ist->next_dts;
2793         if (is->iformat->flags & AVFMT_TS_DISCONT) {
2794         if(delta < -1LL*dts_delta_threshold*AV_TIME_BASE ||
2795             (delta > 1LL*dts_delta_threshold*AV_TIME_BASE &&
2796                 ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE) ||
2797             pkt_dts+1<ist->pts){
2798             ifile->ts_offset -= delta;
2799             av_log(NULL, AV_LOG_DEBUG,
2800                    "timestamp discontinuity %"PRId64", new offset= %"PRId64"\n",
2801                    delta, ifile->ts_offset);
2802             pkt.dts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2803             if (pkt.pts != AV_NOPTS_VALUE)
2804                 pkt.pts -= av_rescale_q(delta, AV_TIME_BASE_Q, ist->st->time_base);
2805         }
2806         } else {
2807             if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2808                 (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2809                ) {
2810                 av_log(NULL, AV_LOG_WARNING, "DTS %"PRId64", next:%"PRId64" st:%d invalid dropping\n", pkt.dts, ist->next_dts, pkt.stream_index);
2811                 pkt.dts = AV_NOPTS_VALUE;
2812             }
2813             if (pkt.pts != AV_NOPTS_VALUE){
2814                 int64_t pkt_pts = av_rescale_q(pkt.pts, ist->st->time_base, AV_TIME_BASE_Q);
2815                 delta   = pkt_pts - ist->next_dts;
2816                 if ( delta < -1LL*dts_error_threshold*AV_TIME_BASE ||
2817                     (delta > 1LL*dts_error_threshold*AV_TIME_BASE && ist->st->codec->codec_type != AVMEDIA_TYPE_SUBTITLE)
2818                    ) {
2819                     av_log(NULL, AV_LOG_WARNING, "PTS %"PRId64", next:%"PRId64" invalid dropping st:%d\n", pkt.pts, ist->next_dts, pkt.stream_index);
2820                     pkt.pts = AV_NOPTS_VALUE;
2821                 }
2822             }
2823         }
2824     }
2825
2826     sub2video_heartbeat(ist, pkt.pts);
2827
2828     ret = output_packet(ist, &pkt);
2829     if (ret < 0) {
2830         char buf[128];
2831         av_strerror(ret, buf, sizeof(buf));
2832         av_log(NULL, AV_LOG_ERROR, "Error while decoding stream #%d:%d: %s\n",
2833                 ist->file_index, ist->st->index, buf);
2834         if (exit_on_error)
2835             exit(1);
2836     }
2837
2838 discard_packet:
2839     av_free_packet(&pkt);
2840
2841     return 0;
2842 }
2843
2844 /**
2845  * Perform a step of transcoding for the specified filter graph.
2846  *
2847  * @param[in]  graph     filter graph to consider
2848  * @param[out] best_ist  input stream where a frame would allow to continue
2849  * @return  0 for success, <0 for error
2850  */
2851 static int transcode_from_filter(FilterGraph *graph, InputStream **best_ist)
2852 {
2853     int i, ret;
2854     int nb_requests, nb_requests_max = 0;
2855     InputFilter *ifilter;
2856     InputStream *ist;
2857
2858     *best_ist = NULL;
2859     ret = avfilter_graph_request_oldest(graph->graph);
2860     if (ret >= 0)
2861         return reap_filters();
2862
2863     if (ret == AVERROR_EOF) {
2864         ret = reap_filters();
2865         for (i = 0; i < graph->nb_outputs; i++)
2866             close_output_stream(graph->outputs[i]->ost);
2867         return ret;
2868     }
2869     if (ret != AVERROR(EAGAIN))
2870         return ret;
2871
2872     for (i = 0; i < graph->nb_inputs; i++) {
2873         ifilter = graph->inputs[i];
2874         ist = ifilter->ist;
2875         if (input_files[ist->file_index]->eagain ||
2876             input_files[ist->file_index]->eof_reached)
2877             continue;
2878         nb_requests = av_buffersrc_get_nb_failed_requests(ifilter->filter);
2879         if (nb_requests > nb_requests_max) {
2880             nb_requests_max = nb_requests;
2881             *best_ist = ist;
2882         }
2883     }
2884
2885     if (!*best_ist)
2886         for (i = 0; i < graph->nb_outputs; i++)
2887             graph->outputs[i]->ost->unavailable = 1;
2888
2889     return 0;
2890 }
2891
2892 /**
2893  * Run a single step of transcoding.
2894  *
2895  * @return  0 for success, <0 for error
2896  */
2897 static int transcode_step(void)
2898 {
2899     OutputStream *ost;
2900     InputStream  *ist;
2901     int ret;
2902
2903     ost = choose_output();
2904     if (!ost) {
2905         if (got_eagain()) {
2906             reset_eagain();
2907             av_usleep(10000);
2908             return 0;
2909         }
2910         av_log(NULL, AV_LOG_VERBOSE, "No more inputs to read from, finishing.\n");
2911         return AVERROR_EOF;
2912     }
2913
2914     if (ost->filter) {
2915         if ((ret = transcode_from_filter(ost->filter->graph, &ist)) < 0)
2916             return ret;
2917         if (!ist)
2918             return 0;
2919     } else {
2920         av_assert0(ost->source_index >= 0);
2921         ist = input_streams[ost->source_index];
2922     }
2923
2924     ret = process_input(ist->file_index);
2925     if (ret == AVERROR(EAGAIN)) {
2926         if (input_files[ist->file_index]->eagain)
2927             ost->unavailable = 1;
2928         return 0;
2929     }
2930     if (ret < 0)
2931         return ret == AVERROR_EOF ? 0 : ret;
2932
2933     return reap_filters();
2934 }
2935
2936 /*
2937  * The following code is the main loop of the file converter
2938  */
2939 static int transcode(void)
2940 {
2941     int ret, i;
2942     AVFormatContext *os;
2943     OutputStream *ost;
2944     InputStream *ist;
2945     int64_t timer_start;
2946
2947     ret = transcode_init();
2948     if (ret < 0)
2949         goto fail;
2950
2951     if (stdin_interaction) {
2952         av_log(NULL, AV_LOG_INFO, "Press [q] to stop, [?] for help\n");
2953     }
2954
2955     timer_start = av_gettime();
2956
2957 #if HAVE_PTHREADS
2958     if ((ret = init_input_threads()) < 0)
2959         goto fail;
2960 #endif
2961
2962     while (!received_sigterm) {
2963         int64_t cur_time= av_gettime();
2964
2965         /* if 'q' pressed, exits */
2966         if (stdin_interaction)
2967             if (check_keyboard_interaction(cur_time) < 0)
2968                 break;
2969
2970         /* check if there's any stream where output is still needed */
2971         if (!need_output()) {
2972             av_log(NULL, AV_LOG_VERBOSE, "No more output streams to write to, finishing.\n");
2973             break;
2974         }
2975
2976         ret = transcode_step();
2977         if (ret < 0) {
2978             if (ret == AVERROR_EOF || ret == AVERROR(EAGAIN))
2979                 continue;
2980
2981             av_log(NULL, AV_LOG_ERROR, "Error while filtering.\n");
2982             break;
2983         }
2984
2985         /* dump report by using the output first video and audio streams */
2986         print_report(0, timer_start, cur_time);
2987     }
2988 #if HAVE_PTHREADS
2989     free_input_threads();
2990 #endif
2991
2992     /* at the end of stream, we must flush the decoder buffers */
2993     for (i = 0; i < nb_input_streams; i++) {
2994         ist = input_streams[i];
2995         if (!input_files[ist->file_index]->eof_reached && ist->decoding_needed) {
2996             output_packet(ist, NULL);
2997         }
2998     }
2999     flush_encoders();
3000
3001     term_exit();
3002
3003     /* write the trailer if needed and close file */
3004     for (i = 0; i < nb_output_files; i++) {
3005         os = output_files[i]->ctx;
3006         av_write_trailer(os);
3007     }
3008
3009     /* dump report by using the first video and audio streams */
3010     print_report(1, timer_start, av_gettime());
3011
3012     /* close each encoder */
3013     for (i = 0; i < nb_output_streams; i++) {
3014         ost = output_streams[i];
3015         if (ost->encoding_needed) {
3016             av_freep(&ost->st->codec->stats_in);
3017             avcodec_close(ost->st->codec);
3018         }
3019     }
3020
3021     /* close each decoder */
3022     for (i = 0; i < nb_input_streams; i++) {
3023         ist = input_streams[i];
3024         if (ist->decoding_needed) {
3025             avcodec_close(ist->st->codec);
3026         }
3027     }
3028
3029     /* finished ! */
3030     ret = 0;
3031
3032  fail:
3033 #if HAVE_PTHREADS
3034     free_input_threads();
3035 #endif
3036
3037     if (output_streams) {
3038         for (i = 0; i < nb_output_streams; i++) {
3039             ost = output_streams[i];
3040             if (ost) {
3041                 if (ost->stream_copy)
3042                     av_freep(&ost->st->codec->extradata);
3043                 if (ost->logfile) {
3044                     fclose(ost->logfile);
3045                     ost->logfile = NULL;
3046                 }
3047                 av_freep(&ost->st->codec->subtitle_header);
3048                 av_free(ost->forced_kf_pts);
3049                 av_dict_free(&ost->opts);
3050             }
3051         }
3052     }
3053     return ret;
3054 }
3055
3056
3057 static int64_t getutime(void)
3058 {
3059 #if HAVE_GETRUSAGE
3060     struct rusage rusage;
3061
3062     getrusage(RUSAGE_SELF, &rusage);
3063     return (rusage.ru_utime.tv_sec * 1000000LL) + rusage.ru_utime.tv_usec;
3064 #elif HAVE_GETPROCESSTIMES
3065     HANDLE proc;
3066     FILETIME c, e, k, u;
3067     proc = GetCurrentProcess();
3068     GetProcessTimes(proc, &c, &e, &k, &u);
3069     return ((int64_t) u.dwHighDateTime << 32 | u.dwLowDateTime) / 10;
3070 #else
3071     return av_gettime();
3072 #endif
3073 }
3074
3075 static int64_t getmaxrss(void)
3076 {
3077 #if HAVE_GETRUSAGE && HAVE_STRUCT_RUSAGE_RU_MAXRSS
3078     struct rusage rusage;
3079     getrusage(RUSAGE_SELF, &rusage);
3080     return (int64_t)rusage.ru_maxrss * 1024;
3081 #elif HAVE_GETPROCESSMEMORYINFO
3082     HANDLE proc;
3083     PROCESS_MEMORY_COUNTERS memcounters;
3084     proc = GetCurrentProcess();
3085     memcounters.cb = sizeof(memcounters);
3086     GetProcessMemoryInfo(proc, &memcounters, sizeof(memcounters));
3087     return memcounters.PeakPagefileUsage;
3088 #else
3089     return 0;
3090 #endif
3091 }
3092
3093 static void log_callback_null(void *ptr, int level, const char *fmt, va_list vl)
3094 {
3095 }
3096
3097 static void parse_cpuflags(int argc, char **argv, const OptionDef *options)
3098 {
3099     int idx = locate_option(argc, argv, options, "cpuflags");
3100     if (idx && argv[idx + 1])
3101         opt_cpuflags(NULL, "cpuflags", argv[idx + 1]);
3102 }
3103
3104 int main(int argc, char **argv)
3105 {
3106     OptionsContext o = { 0 };
3107     int64_t ti;
3108
3109     atexit(exit_program);
3110
3111     reset_options(&o, 0);
3112
3113     setvbuf(stderr,NULL,_IONBF,0); /* win32 runtime needs this */
3114
3115     av_log_set_flags(AV_LOG_SKIP_REPEATED);
3116     parse_loglevel(argc, argv, options);
3117
3118     if(argc>1 && !strcmp(argv[1], "-d")){
3119         run_as_daemon=1;
3120         av_log_set_callback(log_callback_null);
3121         argc--;
3122         argv++;
3123     }
3124
3125     avcodec_register_all();
3126 #if CONFIG_AVDEVICE
3127     avdevice_register_all();
3128 #endif
3129     avfilter_register_all();
3130     av_register_all();
3131     avformat_network_init();
3132
3133     show_banner(argc, argv, options);
3134
3135     term_init();
3136
3137     parse_cpuflags(argc, argv, options);
3138
3139     /* parse options */
3140     parse_options(&o, argc, argv, options, opt_output_file);
3141
3142     if (nb_output_files <= 0 && nb_input_files == 0) {
3143         show_usage();
3144         av_log(NULL, AV_LOG_WARNING, "Use -h to get full help or, even better, run 'man %s'\n", program_name);
3145         exit(1);
3146     }
3147
3148     /* file converter / grab */
3149     if (nb_output_files <= 0) {
3150         av_log(NULL, AV_LOG_FATAL, "At least one output file must be specified\n");
3151         exit(1);
3152     }
3153
3154 //     if (nb_input_files == 0) {
3155 //         av_log(NULL, AV_LOG_FATAL, "At least one input file must be specified\n");
3156 //         exit(1);
3157 //     }
3158
3159     current_time = ti = getutime();
3160     if (transcode() < 0)
3161         exit(1);
3162     ti = getutime() - ti;
3163     if (do_benchmark) {
3164         int maxrss = getmaxrss() / 1024;
3165         printf("bench: utime=%0.3fs maxrss=%ikB\n", ti / 1000000.0, maxrss);
3166     }
3167
3168     exit(0);
3169     return 0;
3170 }