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

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