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