| /* |
| ** 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 */ |