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/*
** Copyright (C) 2009-2011 Erik de Castro Lopo <erikd@mega-nerd.com>
**
** This program is free software; you can redistribute it and/or modify
** it under the terms of the GNU Lesser General Public License as published by
** the Free Software Foundation; either version 2.1 of the License, or
** (at your option) any later version.
**
** This program is distributed in the hope that it will be useful,
** but WITHOUT ANY WARRANTY; without even the implied warranty of
** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
** GNU Lesser General Public License for more details.
**
** You should have received a copy of the GNU Lesser General Public License
** along with this program; if not, write to the Free Software
** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
/*
** Mostly from "Apple Core Audio Format Specification 1.0":
**
** http://developer.apple.com/documentation/MusicAudio/Reference/CAFSpec/CAFSpec.pdf
*/
#include "sfconfig.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "sndfile.h"
#include "common.h"
#include "chanmap.h"
static const AIFF_CAF_CHANNEL_MAP zero_chan [] =
{ { (0 << 16) | 0, NULL, "Use channel descriptions." },
{ (1 << 16) | 0, NULL, "Use channel bitmap." }
} ; /* zero_chan */
static const int one_chan_mono [1] = { SF_CHANNEL_MAP_MONO } ;
static const AIFF_CAF_CHANNEL_MAP one_chan [] =
{ { (100 << 16) | 1, one_chan_mono, "mono" }
} ; /* one_chan */
static const int two_channel_stereo [2] = { SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT } ;
static const AIFF_CAF_CHANNEL_MAP two_chan [] =
{ { (101 << 16) | 2, two_channel_stereo, "stereo (L, R)" },
{ (102 << 16) | 2, two_channel_stereo, "stereo headphones (L, R)" },
#if 0
{ (103 << 16) | 2, NULL, "matrix stereo (Lt, Rt)" },
{ (104 << 16) | 2, NULL, "2 channels (mid, side)" },
{ (105 << 16) | 2, NULL, "coincident mic pair" },
{ (106 << 16) | 2, NULL, "binaural stereo (L, R)"
}
#endif
} ; /* two_chan */
static const int three_channel_mpeg_30a [3] =
{ SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_CENTER } ;
static const int three_channel_mpeg_30b [3] =
{ SF_CHANNEL_MAP_CENTER, SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT } ;
static const int three_channel_itu_21 [3] =
{ SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_REAR_CENTER } ;
static const int three_channel_dvd_4 [3] =
{ SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_LFE } ;
static const AIFF_CAF_CHANNEL_MAP three_chan [] =
{ { (113 << 16) | 3, three_channel_mpeg_30a, "MPEG 3 0 A (L, R, C)" },
{ (114 << 16) | 3, three_channel_mpeg_30b, "MPEG 3 0 B (C, L, R)" },
{ (131 << 16) | 3, three_channel_itu_21, "ITU 2.1 (L, R, Cs)" },
{ (133 << 16) | 3, three_channel_dvd_4, "DVD 4 (L, R, LFE)" }
} ; /* three_chan */
static const int four_channel_ambisonc_b [4] =
{ SF_CHANNEL_MAP_AMBISONIC_B_W, SF_CHANNEL_MAP_AMBISONIC_B_X, SF_CHANNEL_MAP_AMBISONIC_B_Y, SF_CHANNEL_MAP_AMBISONIC_B_Z } ;
static const int four_channel_quad [4] =
{ SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_REAR_LEFT, SF_CHANNEL_MAP_REAR_RIGHT } ;
static const int four_channel_mpeg_40a [4] =
{ SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_CENTER, SF_CHANNEL_MAP_REAR_CENTER } ;
static const int four_channel_mpeg_40b [4] =
{ SF_CHANNEL_MAP_CENTER, SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_REAR_CENTER } ;
static const int four_channel_itu_23 [4] =
{ SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_REAR_LEFT, SF_CHANNEL_MAP_REAR_RIGHT } ;
static const int four_channel_dvd_5 [4] =
{ SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_LFE, SF_CHANNEL_MAP_REAR_CENTER } ;
static const int four_channel_dvd_10 [4] =
{ SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_CENTER, SF_CHANNEL_MAP_LFE } ;
static const AIFF_CAF_CHANNEL_MAP four_chan [] =
{ { (107 << 16) | 4, four_channel_ambisonc_b, "ambisonic B (W, X, Y, Z)" },
{ (108 << 16) | 4, four_channel_quad, "quad (Lfront, Rfront, Lrear, Rrear)" },
{ (115 << 16) | 4, four_channel_mpeg_40a, "MPEG 4.0 A (L, R, C, Cs)" },
{ (116 << 16) | 4, four_channel_mpeg_40b, "MPEG 4.0 B (C, L, R, Cs)" },
{ (132 << 16) | 4, four_channel_itu_23, "ITU 2.3 (L, R, Ls, Rs)" },
{ (134 << 16) | 4, four_channel_dvd_5, "DVD 5 (L, R, LFE, Cs)" },
{ (136 << 16) | 4, four_channel_dvd_10, "DVD 10 (L, R, C, LFE)" }
} ; /* four_chan */
static const int five_channel_pentagonal [5] =
{ SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_REAR_LEFT, SF_CHANNEL_MAP_REAR_RIGHT, SF_CHANNEL_MAP_CENTER } ;
static const int five_channel_mpeg_50_a [5] =
{ SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_CENTER, SF_CHANNEL_MAP_REAR_LEFT, SF_CHANNEL_MAP_REAR_RIGHT } ;
static const int five_channel_mpeg_50_b [5] =
{ SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_REAR_LEFT, SF_CHANNEL_MAP_REAR_RIGHT, SF_CHANNEL_MAP_CENTER } ;
static const int five_channel_mpeg_50_c [5] =
{ SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_CENTER, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_REAR_LEFT, SF_CHANNEL_MAP_REAR_RIGHT } ;
static const int five_channel_mpeg_50_d [5] =
{ SF_CHANNEL_MAP_CENTER, SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_REAR_LEFT, SF_CHANNEL_MAP_REAR_RIGHT } ;
static const int five_channel_dvd_6 [5] =
{ SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_LFE, SF_CHANNEL_MAP_REAR_LEFT, SF_CHANNEL_MAP_REAR_RIGHT } ;
static const int five_channel_dvd_11 [5] =
{ SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_CENTER, SF_CHANNEL_MAP_LFE, SF_CHANNEL_MAP_REAR_CENTER } ;
static const int five_channel_dvd_18 [5] =
{ SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_REAR_LEFT, SF_CHANNEL_MAP_REAR_RIGHT, SF_CHANNEL_MAP_LFE } ;
static const AIFF_CAF_CHANNEL_MAP five_chan [] =
{ { (109 << 16) | 5, five_channel_pentagonal, "pentagonal (L, R, Lrear, Rrear, C)" },
{ (117 << 16) | 5, five_channel_mpeg_50_a, "MPEG 5.0 A (L, R, C, Ls, Rs)" },
{ (118 << 16) | 5, five_channel_mpeg_50_b, "MPEG 5.0 B (L, R, Ls, Rs, C)" },
{ (119 << 16) | 5, five_channel_mpeg_50_c, "MPEG 5.0 C (L, C, R, Ls, Rs,)" },
{ (120 << 16) | 5, five_channel_mpeg_50_d, "MPEG 5.0 D (C, L, R, Ls, Rs)" },
{ (135 << 16) | 5, five_channel_dvd_6, "DVD 6 (L, R, LFE, Ls, Rs)" },
{ (137 << 16) | 5, five_channel_dvd_11, "DVD 11 (L, R, C, LFE, Cs)" },
{ (138 << 16) | 5, five_channel_dvd_18, "DVD 18 (L, R, Ls, Rs, LFE)" }
} ; /* five_chan */
static const int six_channel_mpeg_51_a [6] =
{ SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_CENTER, SF_CHANNEL_MAP_LFE, SF_CHANNEL_MAP_REAR_LEFT, SF_CHANNEL_MAP_REAR_RIGHT } ;
static const int six_channel_mpeg_51_b [6] =
{ SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_REAR_LEFT, SF_CHANNEL_MAP_REAR_RIGHT, SF_CHANNEL_MAP_CENTER, SF_CHANNEL_MAP_LFE } ;
static const int six_channel_mpeg_51_c [6] =
{ SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_CENTER, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_REAR_LEFT, SF_CHANNEL_MAP_REAR_RIGHT, SF_CHANNEL_MAP_LFE } ;
static const int six_channel_mpeg_51_d [6] =
{ SF_CHANNEL_MAP_CENTER, SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_REAR_LEFT, SF_CHANNEL_MAP_REAR_RIGHT, SF_CHANNEL_MAP_LFE } ;
static const int six_channel_audio_unit_60 [6] =
{ SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_REAR_LEFT, SF_CHANNEL_MAP_REAR_RIGHT, SF_CHANNEL_MAP_CENTER, SF_CHANNEL_MAP_REAR_CENTER } ;
static const int six_channel_aac_60 [6] =
{ SF_CHANNEL_MAP_CENTER, SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_REAR_LEFT, SF_CHANNEL_MAP_REAR_RIGHT, SF_CHANNEL_MAP_REAR_CENTER } ;
static const AIFF_CAF_CHANNEL_MAP six_chan [] =
{ { (110 << 16) | 6, NULL, "hexagonal (L, R, Lr, Rr, C, Rear)" },
{ (121 << 16) | 6, six_channel_mpeg_51_a, "MPEG 5.1 A (L, R, C, LFE, Ls, Rs)" },
{ (122 << 16) | 6, six_channel_mpeg_51_b, "MPEG 5.1 B (L, R, Ls, Rs, C, LFE)" },
{ (123 << 16) | 6, six_channel_mpeg_51_c, "MPEG 5.1 C (L, C, R, Ls, Rs, LFE)" },
{ (124 << 16) | 6, six_channel_mpeg_51_d, "MPEG 5.1 D (C, L, R, Ls, Rs, LFE)" },
{ (139 << 16) | 6, six_channel_audio_unit_60, "AudioUnit 6.0 (L, R, Ls, Rs, C, Cs)" },
{ (141 << 16) | 6, six_channel_aac_60, "AAC 6.0 (C, L, R, Ls, Rs, Cs)" }
} ; /* six_chan */
static const int six_channel_mpeg_61a [7] =
{ SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_CENTER, SF_CHANNEL_MAP_LFE, SF_CHANNEL_MAP_REAR_LEFT, SF_CHANNEL_MAP_REAR_RIGHT, SF_CHANNEL_MAP_REAR_CENTER } ;
static const int six_channel_aac_61 [7] =
{ SF_CHANNEL_MAP_CENTER, SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_REAR_LEFT, SF_CHANNEL_MAP_REAR_RIGHT, SF_CHANNEL_MAP_REAR_CENTER, SF_CHANNEL_MAP_LFE } ;
static const AIFF_CAF_CHANNEL_MAP seven_chan [] =
{ { (125 << 16) | 7, six_channel_mpeg_61a, "MPEG 6.1 A (L, R, C, LFE, Ls, Rs, Cs)" },
{ (140 << 16) | 7, NULL, "AudioUnit 7.0 (L, R, Ls, Rs, C, Rls, Rrs)" },
{ (142 << 16) | 7, six_channel_aac_61, "AAC 6.1 (C, L, R, Ls, Rs, Cs, Lfe)" },
{ (143 << 16) | 7, NULL, "AAC 7.0 (C, L, R, Ls, Rs, Rls, Rrs,)" }
} ; /* seven_chan */
static const AIFF_CAF_CHANNEL_MAP eight_chan [] =
{ { (111 << 16) | 8, NULL,
// front left, front right, rear left, rear right,
// front center, rear center, side left, side right
"octagonal (Lf, Rf, Lr, Rr, Cf, Cr, Ls, Rs)"
},
{ (112 << 16) | 8, NULL,
// left, right, rear left, rear right
// top left, top right, top rear left, top rear right
"cube (L, R, Lrear, Rrear, Ltop, Rtop, Ltoprear, Rtoprear)"
},
{ (126 << 16) | 8, NULL, "MPEG 7.1 A (L, R, C, LFE, Ls, Rs, Lc, Rc)" },
{ (127 << 16) | 8, NULL, "MPEG 7.1 B (C, Lc, Rc, L, R, Ls, Rs, LFE)" },
{ (128 << 16) | 8, NULL, "MPEG 7.1 C (L, R, C, LFE, Ls, R, Rls, Rrs)" },
{ (129 << 16) | 8, NULL, "Emagic Default 7.1 (L, R, Ls, Rs, C, LFE, Lc, Rc)" },
{ (130 << 16) | 8, NULL,
// (ITU_5_1 plus a matrix encoded stereo mix)
"SMPTE DTV (L, R, C, LFE, Ls, Rs, Lt, Rt)"
},
{ (144 << 16) | 8, NULL, "AAC octagonal (C, L, R, Ls, Rs, Rls, Rrs, Cs)" }
} ; /* eight_chan */
#if 0
TMH_10_2_std = (145 << 16) | 16,
// L R C Vhc Lsd Rsd Ls Rs Vhl Vhr Lw Rw Csd Cs LFE1 LFE2
TMH_10_2_full = (146 << 16) | 21,
// TMH_10_2_std plus: Lc Rc HI VI Haptic
#endif
typedef struct
{ const AIFF_CAF_CHANNEL_MAP * map ;
int len ;
} MAP_MAP ;
static const MAP_MAP map [] =
{ { zero_chan, ARRAY_LEN (zero_chan) },
{ one_chan, ARRAY_LEN (one_chan) },
{ two_chan, ARRAY_LEN (two_chan) },
{ three_chan, ARRAY_LEN (three_chan) },
{ four_chan, ARRAY_LEN (four_chan) },
{ five_chan, ARRAY_LEN (five_chan) },
{ six_chan, ARRAY_LEN (six_chan) },
{ seven_chan, ARRAY_LEN (seven_chan) },
{ eight_chan, ARRAY_LEN (eight_chan) }
} ; /* map */
int
aiff_caf_find_channel_layout_tag (const int *chan_map, int channels)
{ const AIFF_CAF_CHANNEL_MAP * curr_map ;
unsigned k, len ;
if (channels < 1 || channels > ARRAY_LEN (map))
return 0 ;
curr_map = map [channels].map ;
len = map [channels].len ;
for (k = 0 ; k < len ; k++)
if (curr_map [k].channel_map != NULL)
if (memcmp (chan_map, curr_map [k].channel_map, channels * sizeof (chan_map [0])) == 0)
return curr_map [k].channel_layout_tag ;
return 0 ;
} /* aiff_caf_find_channel_layout_tag */
const AIFF_CAF_CHANNEL_MAP *
aiff_caf_of_channel_layout_tag (int tag)
{ const AIFF_CAF_CHANNEL_MAP * curr_map ;
unsigned k, len ;
int channels = tag & 0xffff ;
if (channels < 0 || channels > ARRAY_LEN (map))
return NULL ;
curr_map = map [channels].map ;
len = map [channels].len ;
for (k = 0 ; k < len ; k++)
if (curr_map [k].channel_layout_tag == tag)
return curr_map + k ;
return NULL ;
} /* aiff_caf_of_channel_layout_tag */
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