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