modules/packetizer/mpeg4audio.h

   1 /*****************************************************************************
   2  * mpeg4audio.h: MPEG 4 audio definitions
   3  *****************************************************************************
   4  * Copyright (C) 2001-2017 VLC authors and VideoLAN
   5  *
   6  * This program is free software; you can redistribute it and/or modify it
   7  * under the terms of the GNU Lesser General Public License as published by
   8  * the Free Software Foundation; either version 2.1 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program 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
  14  * GNU Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public License
  17  * along with this program; if not, write to the Free Software Foundation,
  18  * Inc., 51 Franklin Street, Fifth Floor, Boston MA 02110-1301, USA.
  19  *****************************************************************************/
  20 enum
  21 {
  22     AOT_AAC_MAIN =   1,
  23     AOT_AAC_LC,
  24     AOT_AAC_SSR,
  25     AOT_AAC_LTP,
  26     AOT_AAC_SBR,
  27     AOT_AAC_SC,
  28     AOT_ER_AAC_LC  = 17,
  29     AOT_ER_AAC_LTP = 19,
  30     AOT_ER_AAC_SC  = 20,
  31     AOT_ER_AAC_LD  = 23,
  32     AOT_AAC_PS     = 29,
  33     AOT_ER_AAC_ELD = 39,
  34 };
  35
  36 enum
  37 {
  38     AAC_PROFILE_MAIN = AOT_AAC_MAIN - 1,
  39     AAC_PROFILE_LC,
  40     AAC_PROFILE_SSR,
  41     AAC_PROFILE_LTP,
  42     AAC_PROFILE_HE,
  43     AAC_PROFILE_LD   = AOT_ER_AAC_LD - 1,
  44     AAC_PROFILE_HEv2 = AOT_AAC_PS - 1,
  45     AAC_PROFILE_ELD  = AOT_ER_AAC_ELD - 1,
  46     /* Similar shift signaling as avcodec, as signaling should have been
  47        done in ADTS header. Values defaults to MPEG4 */
  48     AAC_PROFILE_MPEG2_LC = AAC_PROFILE_LC + 128,
  49     AAC_PROFILE_MPEG2_HE = AAC_PROFILE_HE + 128,
  50 };
  51
  52 #define MPEG4_ASC_MAX_INDEXEDPOS 9
  53
  54 static const uint32_t mpeg4_asc_channelsbyindex[MPEG4_ASC_MAX_INDEXEDPOS] =
  55 {
  56     0, /* Set later */
  57
  58     AOUT_CHAN_CENTER, AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT,
  59
  60     AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_LFE,
  61
  62     AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT,
  63
  64     AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT |
  65     AOUT_CHAN_CENTER,
  66
  67     AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT |
  68     AOUT_CHAN_CENTER | AOUT_CHAN_LFE,
  69
  70     AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_MIDDLELEFT |
  71     AOUT_CHAN_MIDDLERIGHT | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT |
  72     AOUT_CHAN_CENTER,
  73
  74     AOUT_CHAN_LEFT | AOUT_CHAN_RIGHT | AOUT_CHAN_MIDDLELEFT |
  75     AOUT_CHAN_MIDDLERIGHT | AOUT_CHAN_REARLEFT | AOUT_CHAN_REARRIGHT |
  76     AOUT_CHAN_CENTER | AOUT_CHAN_LFE
  77 };