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