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/*
* Purpose: dB to linear conversion tables for vmix
*/
/*
*
* This file is part of Open Sound System.
*
* Copyright (C) 4Front Technologies 1996-2008.
*
* This this source file is released under GPL v2 license (no other versions).
* See the COPYING file included in the main directory of this source
* distribution for the license terms and conditions.
*
*/
/*
* Attenuation table for dB->linear conversion. Indexed in steps of 0.5 dB.
* Table size is 25 dB (first entry is handled as mute).
*/
#ifdef CONFIG_OSS_VMIX_FLOAT
const float vmix_db_table[DB_SIZE + 1] = {
0.0 /* MUTE */ , 0.0035481, 0.0039811, 0.0044668, 0.0050119,
0.0056234, 0.0063096, 0.0070795, 0.0079433, 0.0089125,
0.01, 0.01122, 0.012589, 0.014125, 0.015849,
0.017783, 0.019953, 0.022387, 0.025119, 0.028184,
0.031623, 0.035481, 0.039811, 0.044668, 0.050119,
0.056234, 0.063096, 0.070795, 0.079433, 0.089125,
0.1, 0.1122, 0.12589, 0.14125, 0.15849,
0.17783, 0.19953, 0.22387, 0.25119, 0.28184,
0.31623, 0.35481, 0.39811, 0.44668, 0.50119,
0.56234, 0.63096, 0.70795, 0.79433, 0.89125,
1.0 /* Full level */
};
#else
/* #define VMIX_VOL_SCALE moved to vmix.h */
const int vmix_db_table[DB_SIZE + 1] = {
0, 0, 0, 0, 0, 0, 0, 0, 1, 1,
1, 1, 1, 1, 2, 2, 2, 2, 3, 3,
4, 4, 5, 5, 6, 7, 8, 9, 10, 11,
12, 14, 16, 18, 20, 22, 25, 28, 32, 36,
40, 45, 50, 57, 64, 71, 80, 90, 101, 114,
128
};
#endif
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