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freebsd-dev/sys/dev/sound/pcm/matrix.h
Pedro F. Giffuni 718cf2ccb9 sys/dev: further adoption of SPDX licensing ID tags. 
Mainly focus on files that use BSD 2-Clause license, however the tool I
was using misidentified many licenses so this was mostly a manual - error
prone - task.

The Software Package Data Exchange (SPDX) group provides a specification
to make it easier for automated tools to detect and summarize well known
opensource licenses. We are gradually adopting the specification, noting
that the tags are considered only advisory and do not, in any way,
superceed or replace the license texts.
2017-11-27 14:52:40 +00:00

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/*-
* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
*
* Copyright (c) 2007-2009 Ariff Abdullah <ariff@FreeBSD.org>
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _SND_MATRIX_H_
#define _SND_MATRIX_H_
#undef SND_MULTICHANNEL
#ifndef SND_OLDSTEREO
#define SND_MULTICHANNEL 1
#endif
/*
* XXX = unused, but part of the definition (will be used someday, maybe).
*/
#define SND_CHN_T_FL 0 /* Front Left */
#define SND_CHN_T_FR 1 /* Front Right */
#define SND_CHN_T_FC 2 /* Front Center */
#define SND_CHN_T_LF 3 /* Low Frequency */
#define SND_CHN_T_BL 4 /* Back Left */
#define SND_CHN_T_BR 5 /* Back Right */
#define SND_CHN_T_FLC 6 /* Front Left Center XXX */
#define SND_CHN_T_FRC 7 /* Front Right Center XXX */
#define SND_CHN_T_BC 8 /* Back Center */
#define SND_CHN_T_SL 9 /* Side Left */
#define SND_CHN_T_SR 10 /* Side Right */
#define SND_CHN_T_TC 11 /* Top Center XXX */
#define SND_CHN_T_TFL 12 /* Top Front Left XXX */
#define SND_CHN_T_TFC 13 /* Top Front Center XXX */
#define SND_CHN_T_TFR 14 /* Top Front Right XXX */
#define SND_CHN_T_TBL 15 /* Top Back Left XXX */
#define SND_CHN_T_TBC 16 /* Top Back Center XXX */
#define SND_CHN_T_TBR 17 /* Top Back Right XXX */
#define SND_CHN_T_MAX 18 /* Maximum channels */
#define SND_CHN_T_ZERO (SND_CHN_T_MAX + 1) /* Zero samples */
#define SND_CHN_T_LABELS { \
"fl", "fr", "fc", "lf", "bl", "br", \
"flc", "frc", "bc", "sl", "sr", "tc", \
"tfl", "tfc", "tfr", "tbl", "tbc", "tbr" \
}
#define SND_CHN_T_NAMES { \
"Front Left", "Front Right", "Front Center", \
"Low Frequency Effects", \
"Back Left", "Back Right", \
"Front Left Center", "Front Right Center", \
"Back Center", \
"Side Left", "Side Right", \
"Top Center", \
"Top Front Left", "Top Front Center", "Top Front Right", \
"Top Back Left", "Top Back Center", "Top Back Right" \
}
#define SND_CHN_T_MASK_FL (1 << SND_CHN_T_FL)
#define SND_CHN_T_MASK_FR (1 << SND_CHN_T_FR)
#define SND_CHN_T_MASK_FC (1 << SND_CHN_T_FC)
#define SND_CHN_T_MASK_LF (1 << SND_CHN_T_LF)
#define SND_CHN_T_MASK_BL (1 << SND_CHN_T_BL)
#define SND_CHN_T_MASK_BR (1 << SND_CHN_T_BR)
#define SND_CHN_T_MASK_FLC (1 << SND_CHN_T_FLC)
#define SND_CHN_T_MASK_FRC (1 << SND_CHN_T_FRC)
#define SND_CHN_T_MASK_BC (1 << SND_CHN_T_BC)
#define SND_CHN_T_MASK_SL (1 << SND_CHN_T_SL)
#define SND_CHN_T_MASK_SR (1 << SND_CHN_T_SR)
#define SND_CHN_T_MASK_TC (1 << SND_CHN_T_TC)
#define SND_CHN_T_MASK_TFL (1 << SND_CHN_T_TFL)
#define SND_CHN_T_MASK_TFC (1 << SND_CHN_T_TFC)
#define SND_CHN_T_MASK_TFR (1 << SND_CHN_T_TFR)
#define SND_CHN_T_MASK_TBL (1 << SND_CHN_T_TBL)
#define SND_CHN_T_MASK_TBC (1 << SND_CHN_T_TBC)
#define SND_CHN_T_MASK_TBR (1 << SND_CHN_T_TBR)
#define SND_CHN_LEFT_MASK (SND_CHN_T_MASK_FL | \
SND_CHN_T_MASK_BL | \
SND_CHN_T_MASK_FLC | \
SND_CHN_T_MASK_SL | \
SND_CHN_T_MASK_TFL | \
SND_CHN_T_MASK_TBL)
#define SND_CHN_RIGHT_MASK (SND_CHN_T_MASK_FR | \
SND_CHN_T_MASK_BR | \
SND_CHN_T_MASK_FRC | \
SND_CHN_T_MASK_SR | \
SND_CHN_T_MASK_TFR | \
SND_CHN_T_MASK_TBR)
#define SND_CHN_CENTER_MASK (SND_CHN_T_MASK_FC | \
SND_CHN_T_MASK_BC | \
SND_CHN_T_MASK_TC | \
SND_CHN_T_MASK_TFC | \
SND_CHN_T_MASK_TBC | \
SND_CHN_T_MASK_LF) /* XXX what?!? */
/*
* Matrix identity.
*/
/* 1 @ Mono 1.0 */
#define SND_CHN_MATRIX_1_0 0
#define SND_CHN_MATRIX_1 SND_CHN_MATRIX_1_0
/* 2 @ Stereo 2.0 */
#define SND_CHN_MATRIX_2_0 1
#define SND_CHN_MATRIX_2 SND_CHN_MATRIX_2_0
/* 3 @ 2.1 (lfe), 3.0 (rear center, DEFAULT) */
#define SND_CHN_MATRIX_2_1 2
#define SND_CHN_MATRIX_3_0 3
#define SND_CHN_MATRIX_3 SND_CHN_MATRIX_3_0
/* 4 @ 3.1 (lfe), 4.0 (Quadraphonic, DEFAULT) */
#define SND_CHN_MATRIX_3_1 4
#define SND_CHN_MATRIX_4_0 5
#define SND_CHN_MATRIX_4 SND_CHN_MATRIX_4_0
/* 5 @ 4.1 (lfe), 5.0 (center, DEFAULT) */
#define SND_CHN_MATRIX_4_1 6
#define SND_CHN_MATRIX_5_0 7
#define SND_CHN_MATRIX_5 SND_CHN_MATRIX_5_0
/* 6 @ 5.1 (lfe, DEFAULT), 6.0 (rear center) */
#define SND_CHN_MATRIX_5_1 8
#define SND_CHN_MATRIX_6_0 9
#define SND_CHN_MATRIX_6 SND_CHN_MATRIX_5_1
/* 7 @ 6.1 (lfe, DEFAULT), 7.0 */
#define SND_CHN_MATRIX_6_1 10
#define SND_CHN_MATRIX_7_0 11
#define SND_CHN_MATRIX_7 SND_CHN_MATRIX_6_1
/* 8 @ 7.1 (lfe) */
#define SND_CHN_MATRIX_7_1 12
#define SND_CHN_MATRIX_8 SND_CHN_MATRIX_7_1
#define SND_CHN_MATRIX_MAX 13
#define SND_CHN_MATRIX_BEGIN SND_CHN_MATRIX_1_0
#define SND_CHN_MATRIX_END SND_CHN_MATRIX_7_1
/* Custom matrix identity */
#define SND_CHN_MATRIX_DRV -4 /* driver own identity */
#define SND_CHN_MATRIX_PCMCHANNEL -3 /* PCM channel identity */
#define SND_CHN_MATRIX_MISC -2 /* misc, custom defined */
#define SND_CHN_MATRIX_UNKNOWN -1 /* unknown */
#define SND_CHN_T_VOL_0DB SND_CHN_T_MAX
#define SND_CHN_T_VOL_MAX (SND_CHN_T_VOL_0DB + 1)
#define SND_CHN_T_BEGIN SND_CHN_T_FL
#define SND_CHN_T_END SND_CHN_T_TBR
#define SND_CHN_T_STEP 1
#define SND_CHN_MIN 1
#ifdef SND_MULTICHANNEL
#define SND_CHN_MAX 8
#else
#define SND_CHN_MAX 2
#endif
/*
* Multichannel interleaved volume matrix. Each calculated value relative
* to master and 0db will be stored in each CLASS + 1 as long as
* chn_setvolume_matrix() or the equivalent CHN_SETVOLUME() macros is
* used (see channel.c).
*/
#define SND_VOL_C_MASTER 0
#define SND_VOL_C_PCM 1
#define SND_VOL_C_PCM_VAL 2
#define SND_VOL_C_MAX 3
#define SND_VOL_C_BEGIN SND_VOL_C_PCM
#define SND_VOL_C_END SND_VOL_C_PCM
#define SND_VOL_C_STEP 2
#define SND_VOL_C_VAL(x) ((x) + 1)
#define SND_VOL_0DB_MIN 1
#define SND_VOL_0DB_MAX 100
#define SND_VOL_0DB_MASTER 100
#define SND_VOL_0DB_PCM 45
#define SND_VOL_RESOLUTION 8
#define SND_VOL_FLAT (1 << SND_VOL_RESOLUTION)
#define SND_VOL_CALC_SAMPLE(x, y) (((x) * (y)) >> SND_VOL_RESOLUTION)
#define SND_VOL_CALC_VAL(x, y, z) \
(((((x)[y][z] << SND_VOL_RESOLUTION) / \
(x)[y][SND_CHN_T_VOL_0DB]) * \
(x)[SND_VOL_C_MASTER][z]) / \
(x)[SND_VOL_C_MASTER][SND_CHN_T_VOL_0DB]) \
#endif /* !_SND_MATRIX_H_ */
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