Now available: The Design and Implementation of the FreeBSD Operating System (Second Edition)
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FreeBSD/Linux Kernel Cross Reference
sys/dev/sound/pcm/matrix.h
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1 /*- 2 * SPDX-License-Identifier: BSD-2-Clause-FreeBSD 3 * 4 * Copyright (c) 2007-2009 Ariff Abdullah <ariff@FreeBSD.org> 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 26 * SUCH DAMAGE. 27 * 28 * $FreeBSD$ 29 */ 30 31 #ifndef _SND_MATRIX_H_ 32 #define _SND_MATRIX_H_ 33 34 #undef SND_MULTICHANNEL 35 #ifndef SND_OLDSTEREO 36 #define SND_MULTICHANNEL 1 37 #endif 38 39 /* 40 * XXX = unused, but part of the definition (will be used someday, maybe). 41 */ 42 #define SND_CHN_T_FL 0 /* Front Left */ 43 #define SND_CHN_T_FR 1 /* Front Right */ 44 #define SND_CHN_T_FC 2 /* Front Center */ 45 #define SND_CHN_T_LF 3 /* Low Frequency */ 46 #define SND_CHN_T_BL 4 /* Back Left */ 47 #define SND_CHN_T_BR 5 /* Back Right */ 48 #define SND_CHN_T_FLC 6 /* Front Left Center XXX */ 49 #define SND_CHN_T_FRC 7 /* Front Right Center XXX */ 50 #define SND_CHN_T_BC 8 /* Back Center */ 51 #define SND_CHN_T_SL 9 /* Side Left */ 52 #define SND_CHN_T_SR 10 /* Side Right */ 53 #define SND_CHN_T_TC 11 /* Top Center XXX */ 54 #define SND_CHN_T_TFL 12 /* Top Front Left XXX */ 55 #define SND_CHN_T_TFC 13 /* Top Front Center XXX */ 56 #define SND_CHN_T_TFR 14 /* Top Front Right XXX */ 57 #define SND_CHN_T_TBL 15 /* Top Back Left XXX */ 58 #define SND_CHN_T_TBC 16 /* Top Back Center XXX */ 59 #define SND_CHN_T_TBR 17 /* Top Back Right XXX */ 60 #define SND_CHN_T_MAX 18 /* Maximum channels */ 61 62 #define SND_CHN_T_ZERO (SND_CHN_T_MAX + 1) /* Zero samples */ 63 64 #define SND_CHN_T_LABELS { \ 65 "fl", "fr", "fc", "lf", "bl", "br", \ 66 "flc", "frc", "bc", "sl", "sr", "tc", \ 67 "tfl", "tfc", "tfr", "tbl", "tbc", "tbr" \ 68 } 69 70 #define SND_CHN_T_NAMES { \ 71 "Front Left", "Front Right", "Front Center", \ 72 "Low Frequency Effects", \ 73 "Back Left", "Back Right", \ 74 "Front Left Center", "Front Right Center", \ 75 "Back Center", \ 76 "Side Left", "Side Right", \ 77 "Top Center", \ 78 "Top Front Left", "Top Front Center", "Top Front Right", \ 79 "Top Back Left", "Top Back Center", "Top Back Right" \ 80 } 81 82 #define SND_CHN_T_MASK_FL (1 << SND_CHN_T_FL) 83 #define SND_CHN_T_MASK_FR (1 << SND_CHN_T_FR) 84 #define SND_CHN_T_MASK_FC (1 << SND_CHN_T_FC) 85 #define SND_CHN_T_MASK_LF (1 << SND_CHN_T_LF) 86 #define SND_CHN_T_MASK_BL (1 << SND_CHN_T_BL) 87 #define SND_CHN_T_MASK_BR (1 << SND_CHN_T_BR) 88 #define SND_CHN_T_MASK_FLC (1 << SND_CHN_T_FLC) 89 #define SND_CHN_T_MASK_FRC (1 << SND_CHN_T_FRC) 90 #define SND_CHN_T_MASK_BC (1 << SND_CHN_T_BC) 91 #define SND_CHN_T_MASK_SL (1 << SND_CHN_T_SL) 92 #define SND_CHN_T_MASK_SR (1 << SND_CHN_T_SR) 93 #define SND_CHN_T_MASK_TC (1 << SND_CHN_T_TC) 94 #define SND_CHN_T_MASK_TFL (1 << SND_CHN_T_TFL) 95 #define SND_CHN_T_MASK_TFC (1 << SND_CHN_T_TFC) 96 #define SND_CHN_T_MASK_TFR (1 << SND_CHN_T_TFR) 97 #define SND_CHN_T_MASK_TBL (1 << SND_CHN_T_TBL) 98 #define SND_CHN_T_MASK_TBC (1 << SND_CHN_T_TBC) 99 #define SND_CHN_T_MASK_TBR (1 << SND_CHN_T_TBR) 100 101 #define SND_CHN_LEFT_MASK (SND_CHN_T_MASK_FL | \ 102 SND_CHN_T_MASK_BL | \ 103 SND_CHN_T_MASK_FLC | \ 104 SND_CHN_T_MASK_SL | \ 105 SND_CHN_T_MASK_TFL | \ 106 SND_CHN_T_MASK_TBL) 107 108 #define SND_CHN_RIGHT_MASK (SND_CHN_T_MASK_FR | \ 109 SND_CHN_T_MASK_BR | \ 110 SND_CHN_T_MASK_FRC | \ 111 SND_CHN_T_MASK_SR | \ 112 SND_CHN_T_MASK_TFR | \ 113 SND_CHN_T_MASK_TBR) 114 115 #define SND_CHN_CENTER_MASK (SND_CHN_T_MASK_FC | \ 116 SND_CHN_T_MASK_BC | \ 117 SND_CHN_T_MASK_TC | \ 118 SND_CHN_T_MASK_TFC | \ 119 SND_CHN_T_MASK_TBC | \ 120 SND_CHN_T_MASK_LF) /* XXX what?!? */ 121 122 /* 123 * Matrix identity. 124 */ 125 126 /* 1 @ Mono 1.0 */ 127 #define SND_CHN_MATRIX_1_0 0 128 #define SND_CHN_MATRIX_1 SND_CHN_MATRIX_1_0 129 130 /* 2 @ Stereo 2.0 */ 131 #define SND_CHN_MATRIX_2_0 1 132 #define SND_CHN_MATRIX_2 SND_CHN_MATRIX_2_0 133 134 /* 3 @ 2.1 (lfe), 3.0 (rear center, DEFAULT) */ 135 #define SND_CHN_MATRIX_2_1 2 136 #define SND_CHN_MATRIX_3_0 3 137 #define SND_CHN_MATRIX_3 SND_CHN_MATRIX_3_0 138 139 /* 4 @ 3.1 (lfe), 4.0 (Quadraphonic, DEFAULT) */ 140 #define SND_CHN_MATRIX_3_1 4 141 #define SND_CHN_MATRIX_4_0 5 142 #define SND_CHN_MATRIX_4 SND_CHN_MATRIX_4_0 143 144 /* 5 @ 4.1 (lfe), 5.0 (center, DEFAULT) */ 145 #define SND_CHN_MATRIX_4_1 6 146 #define SND_CHN_MATRIX_5_0 7 147 #define SND_CHN_MATRIX_5 SND_CHN_MATRIX_5_0 148 149 /* 6 @ 5.1 (lfe, DEFAULT), 6.0 (rear center) */ 150 #define SND_CHN_MATRIX_5_1 8 151 #define SND_CHN_MATRIX_6_0 9 152 #define SND_CHN_MATRIX_6 SND_CHN_MATRIX_5_1 153 154 /* 7 @ 6.1 (lfe, DEFAULT), 7.0 */ 155 #define SND_CHN_MATRIX_6_1 10 156 #define SND_CHN_MATRIX_7_0 11 157 #define SND_CHN_MATRIX_7 SND_CHN_MATRIX_6_1 158 159 /* 8 @ 7.1 (lfe) */ 160 #define SND_CHN_MATRIX_7_1 12 161 #define SND_CHN_MATRIX_8 SND_CHN_MATRIX_7_1 162 163 #define SND_CHN_MATRIX_MAX 13 164 165 #define SND_CHN_MATRIX_BEGIN SND_CHN_MATRIX_1_0 166 #define SND_CHN_MATRIX_END SND_CHN_MATRIX_7_1 167 168 /* Custom matrix identity */ 169 #define SND_CHN_MATRIX_DRV -4 /* driver own identity */ 170 #define SND_CHN_MATRIX_PCMCHANNEL -3 /* PCM channel identity */ 171 #define SND_CHN_MATRIX_MISC -2 /* misc, custom defined */ 172 #define SND_CHN_MATRIX_UNKNOWN -1 /* unknown */ 173 174 #define SND_CHN_T_VOL_0DB SND_CHN_T_MAX 175 #define SND_CHN_T_VOL_MAX (SND_CHN_T_VOL_0DB + 1) 176 177 #define SND_CHN_T_BEGIN SND_CHN_T_FL 178 #define SND_CHN_T_END SND_CHN_T_TBR 179 #define SND_CHN_T_STEP 1 180 #define SND_CHN_MIN 1 181 182 #ifdef SND_MULTICHANNEL 183 #define SND_CHN_MAX 8 184 #else 185 #define SND_CHN_MAX 2 186 #endif 187 188 /* 189 * Multichannel interleaved volume matrix. Each calculated value relative 190 * to master and 0db will be stored in each CLASS + 1 as long as 191 * chn_setvolume_matrix() or the equivalent CHN_SETVOLUME() macros is 192 * used (see channel.c). 193 */ 194 #define SND_VOL_C_MASTER 0 195 #define SND_VOL_C_PCM 1 196 #define SND_VOL_C_PCM_VAL 2 197 #define SND_VOL_C_MAX 3 198 199 #define SND_VOL_C_BEGIN SND_VOL_C_PCM 200 #define SND_VOL_C_END SND_VOL_C_PCM 201 #define SND_VOL_C_STEP 2 202 203 #define SND_VOL_C_VAL(x) ((x) + 1) 204 205 #define SND_VOL_0DB_MIN 1 206 #define SND_VOL_0DB_MAX 100 207 208 #define SND_VOL_0DB_MASTER 100 209 #define SND_VOL_0DB_PCM 45 210 211 #define SND_VOL_RESOLUTION 8 212 #define SND_VOL_FLAT (1 << SND_VOL_RESOLUTION) 213 214 #define SND_VOL_CALC_SAMPLE(x, y) (((x) * (y)) >> SND_VOL_RESOLUTION) 215 216 #define SND_VOL_CALC_VAL(x, y, z) \ 217 (((((x)[y][z] << SND_VOL_RESOLUTION) / \ 218 (x)[y][SND_CHN_T_VOL_0DB]) * \ 219 (x)[SND_VOL_C_MASTER][z]) / \ 220 (x)[SND_VOL_C_MASTER][SND_CHN_T_VOL_0DB]) \ 221 222 #endif /* !_SND_MATRIX_H_ */
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