interpretor/lib/src/libsndfile-1.0.25/src/chanmap.c

   1 /*
   2 ** Copyright (C) 2009-2011 Erik de Castro Lopo <erikd@mega-nerd.com>
   3 **
   4 ** This program is free software; you can redistribute it and/or modify
   5 ** it under the terms of the GNU Lesser General Public License as published by
   6 ** the Free Software Foundation; either version 2.1 of the License, or
   7 ** (at your option) any later version.
   8 **
   9 ** This program is distributed in the hope that it will be useful,
  10 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 ** GNU Lesser General Public License for more details.
  13 **
  14 ** You should have received a copy of the GNU Lesser General Public License
  15 ** along with this program; if not, write to the Free Software
  16 ** Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  17 */
  18
  19 /*
  20 **      Mostly from "Apple Core Audio Format Specification 1.0":
  21 **
  22 **              http://developer.apple.com/documentation/MusicAudio/Reference/CAFSpec/CAFSpec.pdf
  23 */
  24
  25 #include "sfconfig.h"
  26
  27 #include <stdio.h>
  28 #include <stdlib.h>
  29 #include <string.h>
  30
  31 #include "sndfile.h"
  32 #include "common.h"
  33 #include "chanmap.h"
  34
  35
  36 static const AIFF_CAF_CHANNEL_MAP zero_chan [] =
  37 {       {       (0 << 16) | 0, NULL, "Use channel descriptions." },
  38         {       (1 << 16) | 0, NULL, "Use channel bitmap." }
  39 } ; /* zero_chan */
  40
  41
  42 static const int one_chan_mono [1] = {  SF_CHANNEL_MAP_MONO } ;
  43
  44 static const AIFF_CAF_CHANNEL_MAP one_chan [] =
  45 {       {       (100 << 16) | 1, one_chan_mono, "mono" }
  46 } ; /* one_chan */
  47
  48
  49 static const int two_channel_stereo [2] = {     SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT } ;
  50
  51 static const AIFF_CAF_CHANNEL_MAP two_chan [] =
  52 {       {       (101 << 16) | 2, two_channel_stereo, "stereo (L, R)" },
  53         {       (102 << 16) | 2, two_channel_stereo, "stereo headphones (L, R)" },
  54 #if 0
  55         {       (103 << 16) | 2, NULL, "matrix stereo (Lt, Rt)" },
  56         {       (104 << 16) | 2, NULL, "2 channels (mid, side)" },
  57         {       (105 << 16) | 2, NULL, "coincident mic pair" },
  58         {       (106 << 16) | 2, NULL, "binaural stereo (L, R)"
  59                 }
  60 #endif
  61 } ; /* two_chan */
  62
  63
  64 static const int three_channel_mpeg_30a [3] =
  65         {       SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_CENTER } ;
  66 static const int three_channel_mpeg_30b [3] =
  67         {       SF_CHANNEL_MAP_CENTER, SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT } ;
  68 static const int three_channel_itu_21 [3] =
  69         {       SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_REAR_CENTER } ;
  70 static const int three_channel_dvd_4 [3] =
  71         {       SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_LFE } ;
  72
  73 static const AIFF_CAF_CHANNEL_MAP three_chan [] =
  74 {       {       (113 << 16) | 3, three_channel_mpeg_30a, "MPEG 3 0 A (L, R, C)" },
  75         {       (114 << 16) | 3, three_channel_mpeg_30b, "MPEG 3 0 B (C, L, R)" },
  76         {       (131 << 16) | 3, three_channel_itu_21, "ITU 2.1 (L, R, Cs)" },
  77         {       (133 << 16) | 3, three_channel_dvd_4, "DVD 4 (L, R, LFE)" }
  78 } ; /* three_chan */
  79
  80
  81 static const int four_channel_ambisonc_b [4] =
  82         {       SF_CHANNEL_MAP_AMBISONIC_B_W, SF_CHANNEL_MAP_AMBISONIC_B_X, SF_CHANNEL_MAP_AMBISONIC_B_Y, SF_CHANNEL_MAP_AMBISONIC_B_Z } ;
  83 static const int four_channel_quad [4] =
  84         {       SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_REAR_LEFT, SF_CHANNEL_MAP_REAR_RIGHT } ;
  85 static const int four_channel_mpeg_40a [4] =
  86         {       SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_CENTER, SF_CHANNEL_MAP_REAR_CENTER } ;
  87 static const int four_channel_mpeg_40b [4] =
  88         {       SF_CHANNEL_MAP_CENTER, SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_REAR_CENTER } ;
  89 static const int four_channel_itu_23 [4] =
  90         {       SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_REAR_LEFT, SF_CHANNEL_MAP_REAR_RIGHT } ;
  91 static const int four_channel_dvd_5 [4] =
  92         {       SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_LFE, SF_CHANNEL_MAP_REAR_CENTER } ;
  93 static const int four_channel_dvd_10 [4] =
  94         {       SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_CENTER, SF_CHANNEL_MAP_LFE } ;
  95
  96 static const AIFF_CAF_CHANNEL_MAP four_chan [] =
  97 {       {       (107 << 16) | 4, four_channel_ambisonc_b, "ambisonic B (W,  X, Y, Z)" },
  98         {       (108 << 16) | 4, four_channel_quad, "quad (Lfront, Rfront, Lrear, Rrear)" },
  99         {       (115 << 16) | 4, four_channel_mpeg_40a, "MPEG 4.0 A (L, R, C, Cs)" },
 100         {       (116 << 16) | 4, four_channel_mpeg_40b, "MPEG 4.0 B (C, L, R, Cs)" },
 101         {       (132 << 16) | 4, four_channel_itu_23, "ITU 2.3 (L, R, Ls, Rs)" },
 102         {       (134 << 16) | 4, four_channel_dvd_5, "DVD 5 (L, R, LFE, Cs)" },
 103         {       (136 << 16) | 4, four_channel_dvd_10, "DVD 10 (L, R, C, LFE)" }
 104 } ; /* four_chan */
 105
 106
 107 static const int five_channel_pentagonal [5] =
 108         {       SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_REAR_LEFT, SF_CHANNEL_MAP_REAR_RIGHT, SF_CHANNEL_MAP_CENTER } ;
 109 static const int five_channel_mpeg_50_a [5] =
 110         {       SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_CENTER, SF_CHANNEL_MAP_REAR_LEFT, SF_CHANNEL_MAP_REAR_RIGHT } ;
 111 static const int five_channel_mpeg_50_b [5] =
 112         {       SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_REAR_LEFT, SF_CHANNEL_MAP_REAR_RIGHT, SF_CHANNEL_MAP_CENTER } ;
 113 static const int five_channel_mpeg_50_c [5] =
 114         {       SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_CENTER, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_REAR_LEFT, SF_CHANNEL_MAP_REAR_RIGHT } ;
 115 static const int five_channel_mpeg_50_d [5] =
 116         {       SF_CHANNEL_MAP_CENTER, SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_REAR_LEFT, SF_CHANNEL_MAP_REAR_RIGHT } ;
 117 static const int five_channel_dvd_6 [5] =
 118         {       SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_LFE, SF_CHANNEL_MAP_REAR_LEFT, SF_CHANNEL_MAP_REAR_RIGHT } ;
 119 static const int five_channel_dvd_11 [5] =
 120         {       SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_CENTER, SF_CHANNEL_MAP_LFE, SF_CHANNEL_MAP_REAR_CENTER } ;
 121 static const int five_channel_dvd_18 [5] =
 122         {       SF_CHANNEL_MAP_LEFT, SF_CHANNEL_MAP_RIGHT, SF_CHANNEL_MAP_REAR_LEFT, SF_CHANNEL_MAP_REAR_RIGHT, SF_CHANNEL_MAP_LFE } ;
 123
 124 static const AIFF_CAF_CHANNEL_MAP five_chan [] =
 125 {       {       (109 << 16) | 5, five_channel_pentagonal, "pentagonal (L,  R, Lrear, Rrear, C)" },
 126         {       (117 << 16) | 5, five_channel_mpeg_50_a, "MPEG 5.0 A (L, R, C, Ls, Rs)" },
 127         {       (118 << 16) | 5, five_channel_mpeg_50_b, "MPEG 5.0 B (L, R, Ls, Rs, C)" },
 128         {       (119 << 16) | 5, five_channel_mpeg_50_c, "MPEG 5.0 C (L, C, R, Ls, Rs,)" },
 129         {       (120 << 16) | 5, five_channel_mpeg_50_d, "MPEG 5.0 D (C, L, R, Ls, Rs)" },
 130         {       (135 << 16) | 5, five_channel_dvd_6, "DVD 6 (L, R, LFE, Ls, Rs)" },
 131         {       (137 << 16) | 5, five_channel_dvd_11, "DVD 11 (L, R, C, LFE, Cs)" },
 132         {       (138 << 16) | 5, five_channel_dvd_18, "DVD 18 (L, R, Ls, Rs, LFE)" }
 133 } ; /* five_chan */
 134
 135
 136 static const int six_channel_mpeg_51_a [6] =
 137         {       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 } ;
 138 static const int six_channel_mpeg_51_b [6] =
 139         {       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 } ;
 140 static const int six_channel_mpeg_51_c [6] =
 141         {       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 } ;
 142 static const int six_channel_mpeg_51_d [6] =
 143         {       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 } ;
 144 static const int six_channel_audio_unit_60 [6] =
 145         {       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 } ;
 146 static const int six_channel_aac_60 [6] =
 147         {       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 } ;
 148
 149 static const AIFF_CAF_CHANNEL_MAP six_chan [] =
 150 {       {       (110 << 16) | 6, NULL, "hexagonal (L, R, Lr, Rr, C, Rear)" },
 151         {       (121 << 16) | 6, six_channel_mpeg_51_a, "MPEG 5.1 A (L, R, C, LFE, Ls, Rs)" },
 152         {       (122 << 16) | 6, six_channel_mpeg_51_b, "MPEG 5.1 B (L, R, Ls, Rs, C, LFE)" },
 153         {       (123 << 16) | 6, six_channel_mpeg_51_c, "MPEG 5.1 C (L, C, R, Ls, Rs, LFE)" },
 154         {       (124 << 16) | 6, six_channel_mpeg_51_d, "MPEG 5.1 D (C, L, R, Ls, Rs, LFE)" },
 155         {       (139 << 16) | 6, six_channel_audio_unit_60, "AudioUnit 6.0 (L, R, Ls, Rs, C, Cs)" },
 156         {       (141 << 16) | 6, six_channel_aac_60, "AAC 6.0 (C, L, R, Ls, Rs, Cs)" }
 157 } ; /* six_chan */
 158
 159
 160 static const int six_channel_mpeg_61a [7] =
 161         {       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 } ;
 162 static const int six_channel_aac_61 [7] =
 163         {       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 } ;
 164
 165 static const AIFF_CAF_CHANNEL_MAP seven_chan [] =
 166 {       {       (125 << 16) | 7, six_channel_mpeg_61a, "MPEG 6.1 A (L, R, C, LFE, Ls, Rs, Cs)" },
 167         {       (140 << 16) | 7, NULL, "AudioUnit 7.0 (L, R, Ls, Rs, C, Rls, Rrs)" },
 168         {       (142 << 16) | 7, six_channel_aac_61, "AAC 6.1 (C, L, R, Ls, Rs, Cs, Lfe)" },
 169         {       (143 << 16) | 7, NULL, "AAC 7.0 (C, L, R, Ls, Rs, Rls, Rrs,)" }
 170 } ; /* seven_chan */
 171
 172
 173 static const AIFF_CAF_CHANNEL_MAP eight_chan [] =
 174 {       {       (111 << 16) | 8, NULL,
 175                 // front left, front right, rear left, rear right,
 176                 // front center, rear center, side left, side right
 177                 "octagonal (Lf, Rf, Lr, Rr, Cf, Cr, Ls, Rs)"
 178                 },
 179         {       (112 << 16) | 8, NULL,
 180                 // left, right, rear left, rear right
 181                 // top left, top right, top rear left, top rear right
 182                 "cube (L, R, Lrear, Rrear, Ltop, Rtop, Ltoprear, Rtoprear)"
 183                 },
 184         {       (126 << 16) | 8, NULL, "MPEG 7.1 A (L, R, C, LFE, Ls, Rs, Lc, Rc)" },
 185         {       (127 << 16) | 8, NULL, "MPEG 7.1 B (C, Lc, Rc, L, R, Ls, Rs, LFE)" },
 186         {       (128 << 16) | 8, NULL, "MPEG 7.1 C (L, R, C, LFE, Ls, R, Rls, Rrs)" },
 187         {       (129 << 16) | 8, NULL, "Emagic Default 7.1 (L, R, Ls, Rs, C, LFE, Lc, Rc)" },
 188         {       (130 << 16) | 8, NULL,
 189                 // (ITU_5_1 plus a matrix encoded stereo mix)
 190                 "SMPTE DTV (L, R, C, LFE, Ls, Rs, Lt, Rt)"
 191                 },
 192         {       (144 << 16) | 8, NULL, "AAC octagonal (C, L, R, Ls, Rs, Rls, Rrs, Cs)" }
 193 } ; /* eight_chan */
 194
 195
 196
 197 #if 0
 198
 199 TMH_10_2_std = (145 << 16) | 16,
 200 // L R C Vhc Lsd Rsd Ls Rs Vhl Vhr Lw Rw Csd Cs LFE1 LFE2
 201
 202 TMH_10_2_full = (146 << 16) | 21,
 203 // TMH_10_2_std plus: Lc Rc HI VI Haptic
 204
 205 #endif
 206
 207
 208 typedef struct
 209 {       const AIFF_CAF_CHANNEL_MAP * map ;
 210         int len ;
 211 } MAP_MAP ;
 212
 213 static const MAP_MAP map [] =
 214 {       { zero_chan,    ARRAY_LEN (zero_chan) },
 215         { one_chan,             ARRAY_LEN (one_chan) },
 216         { two_chan,             ARRAY_LEN (two_chan) },
 217         { three_chan,   ARRAY_LEN (three_chan) },
 218         { four_chan,    ARRAY_LEN (four_chan) },
 219         { five_chan,    ARRAY_LEN (five_chan) },
 220         { six_chan,             ARRAY_LEN (six_chan) },
 221         { seven_chan,   ARRAY_LEN (seven_chan) },
 222         { eight_chan,   ARRAY_LEN (eight_chan) }
 223 } ; /* map */
 224
 225
 226 int
 227 aiff_caf_find_channel_layout_tag (const int *chan_map, int channels)
 228 {       const AIFF_CAF_CHANNEL_MAP * curr_map ;
 229         unsigned k, len ;
 230
 231         if (channels < 1 || channels > ARRAY_LEN (map))
 232                 return 0 ;
 233
 234         curr_map = map [channels].map ;
 235         len = map [channels].len ;
 236
 237         for (k = 0 ; k < len ; k++)
 238                 if (curr_map [k].channel_map != NULL)
 239                         if (memcmp (chan_map, curr_map [k].channel_map, channels * sizeof (chan_map [0])) == 0)
 240                                 return curr_map [k].channel_layout_tag ;
 241
 242         return 0 ;
 243 } /* aiff_caf_find_channel_layout_tag */
 244
 245 const AIFF_CAF_CHANNEL_MAP *
 246 aiff_caf_of_channel_layout_tag (int tag)
 247 {       const AIFF_CAF_CHANNEL_MAP * curr_map ;
 248         unsigned k, len ;
 249         int channels = tag & 0xffff ;
 250
 251         if (channels < 0 || channels > ARRAY_LEN (map))
 252                 return NULL ;
 253
 254         curr_map = map [channels].map ;
 255         len = map [channels].len ;
 256
 257         for (k = 0 ; k < len ; k++)
 258                 if (curr_map [k].channel_layout_tag == tag)
 259                         return curr_map + k ;
 260
 261         return NULL ;
 262 } /* aiff_caf_of_channel_layout_tag */