diff options
Diffstat (limited to 'media/libeffects/lvm/lib/SpectrumAnalyzer/src/LVPSA_Tables.c')
| -rwxr-xr-x | media/libeffects/lvm/lib/SpectrumAnalyzer/src/LVPSA_Tables.c | 250 |
1 files changed, 250 insertions, 0 deletions
diff --git a/media/libeffects/lvm/lib/SpectrumAnalyzer/src/LVPSA_Tables.c b/media/libeffects/lvm/lib/SpectrumAnalyzer/src/LVPSA_Tables.c new file mode 100755 index 0000000..f4a35c5 --- /dev/null +++ b/media/libeffects/lvm/lib/SpectrumAnalyzer/src/LVPSA_Tables.c @@ -0,0 +1,250 @@ +/* + * Copyright (C) 2004-2010 NXP Software + * Copyright (C) 2010 The Android Open Source Project + * + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +/************************************************************************/ +/* */ +/* Project:: PSA_01_ARMC_01 */ +/* $Author: beq07716 $*/ +/* $Revision: 1006 $*/ +/* $Date: 2010-06-28 14:01:47 +0200 (Mon, 28 Jun 2010) $*/ +/* */ +/************************************************************************/ + + +/************************************************************************************/ +/* */ +/* Includes */ +/* */ +/************************************************************************************/ + +#include "LVPSA.h" +#include "LVPSA_QPD.h" +/************************************************************************************/ +/* */ +/* Sample rate table */ +/* */ +/************************************************************************************/ + +/* + * Sample rate table for converting between the enumerated type and the actual + * frequency + */ +const LVM_UINT16 LVPSA_SampleRateTab[] = { 8000, /* 8kS/s */ + 11025, + 12000, + 16000, + 22050, + 24000, + 32000, + 44100, + 48000}; /* 48kS/s */ + +/************************************************************************************/ +/* */ +/* Sample rate inverse table */ +/* */ +/************************************************************************************/ + +/* + * Sample rate table for converting between the enumerated type and the actual + * frequency + */ +const LVM_UINT32 LVPSA_SampleRateInvTab[] = { 268435, /* 8kS/s */ + 194783, + 178957, + 134218, + 97391, + 89478, + 67109, + 48696, + 44739}; /* 48kS/s */ + + + +/************************************************************************************/ +/* */ +/* Number of samples in 20ms */ +/* */ +/************************************************************************************/ + +/* + * Table for converting between the enumerated type and the number of samples + * during 20ms + */ +const LVM_UINT16 LVPSA_nSamplesBufferUpdate[] = { 160, /* 8kS/s */ + 220, + 240, + 320, + 441, + 480, + 640, + 882, + 960}; /* 48kS/s */ +/************************************************************************************/ +/* */ +/* Down sampling factors */ +/* */ +/************************************************************************************/ + +/* + * Table for converting between the enumerated type and the down sampling factor + */ +const LVM_UINT16 LVPSA_DownSamplingFactor[] = { 5, /* 8000 S/s */ + 7, /* 11025 S/s */ + 8, /* 12000 S/s */ + 10, /* 16000 S/s */ + 15, /* 22050 S/s */ + 16, /* 24000 S/s */ + 21, /* 32000 S/s */ + 30, /* 44100 S/s */ + 32}; /* 48000 S/s */ + + +/************************************************************************************/ +/* */ +/* Coefficient calculation tables */ +/* */ +/************************************************************************************/ + +/* + * Table for 2 * Pi / Fs + */ +const LVM_INT16 LVPSA_TwoPiOnFsTable[] = { 26354, /* 8kS/s */ + 19123, + 17569, + 13177, + 9561, + 8785, + 6588, + 4781, + 4392}; /* 48kS/s */ + +/* + * Gain table + */ +const LVM_INT16 LVPSA_GainTable[] = { 364, /* -15dB gain */ + 408, + 458, + 514, + 577, + 647, + 726, + 815, + 914, + 1026, + 1151, + 1292, + 1449, + 1626, + 1825, + 2048, /* 0dB gain */ + 2297, + 2578, + 2892, + 3245, + 3641, + 4096, + 4584, + 5144, + 5772, + 6476, + 7266, + 8153, + 9148, + 10264, + 11576}; /* +15dB gain */ + +/************************************************************************************/ +/* */ +/* Cosone polynomial coefficients */ +/* */ +/************************************************************************************/ + +/* + * Coefficients for calculating the cosine with the equation: + * + * Cos(x) = (2^Shifts)*(a0 + a1*x + a2*x^2 + a3*x^3 + a4*x^4 + a5*x^5) + * + * These coefficients expect the input, x, to be in the range 0 to 32768 respresenting + * a range of 0 to Pi. The output is in the range 32767 to -32768 representing the range + * +1.0 to -1.0 + */ +const LVM_INT16 LVPSA_CosCoef[] = { 3, /* Shifts */ + 4096, /* a0 */ + -36, /* a1 */ + -19725, /* a2 */ + -2671, /* a3 */ + 23730, /* a4 */ + -9490}; /* a5 */ + +/* + * Coefficients for calculating the cosine error with the equation: + * + * CosErr(x) = (2^Shifts)*(a0 + a1*x + a2*x^2 + a3*x^3) + * + * These coefficients expect the input, x, to be in the range 0 to 32768 respresenting + * a range of 0 to Pi/25. The output is in the range 0 to 32767 representing the range + * 0.0 to 0.0078852986 + * + * This is used to give a double precision cosine over the range 0 to Pi/25 using the + * the equation: + * + * Cos(x) = 1.0 - CosErr(x) + */ +const LVM_INT16 LVPSA_DPCosCoef[] = { 1, /* Shifts */ + 0, /* a0 */ + -6, /* a1 */ + 16586, /* a2 */ + -44}; /* a3 */ + +/************************************************************************************/ +/* */ +/* Quasi peak filter coefficients table */ +/* */ +/************************************************************************************/ +const QPD_C32_Coefs LVPSA_QPD_Coefs[] = { + + {0x80CEFD2B,0x00CB9B17}, /* 8kS/s */ /* LVPSA_SPEED_LOW */ + {0x80D242E7,0x00CED11D}, + {0x80DCBAF5,0x00D91679}, + {0x80CEFD2B,0x00CB9B17}, + {0x80E13739,0x00DD7CD3}, + {0x80DCBAF5,0x00D91679}, + {0x80D94BAF,0x00D5B7E7}, + {0x80E13739,0x00DD7CD3}, + {0x80DCBAF5,0x00D91679}, /* 48kS/s */ + + {0x8587513D,0x055C22CF}, /* 8kS/s */ /* LVPSA_SPEED_MEDIUM */ + {0x859D2967,0x0570F007}, + {0x85E2EFAC,0x05B34D79}, + {0x8587513D,0x055C22CF}, + {0x8600C7B9,0x05CFA6CF}, + {0x85E2EFAC,0x05B34D79}, + {0x85CC1018,0x059D8F69}, + {0x8600C7B9,0x05CFA6CF},//{0x8600C7B9,0x05CFA6CF}, + {0x85E2EFAC,0x05B34D79}, /* 48kS/s */ + + {0xA115EA7A,0x1CDB3F5C}, /* 8kS/s */ /* LVPSA_SPEED_HIGH */ + {0xA18475F0,0x1D2C83A2}, + {0xA2E1E950,0x1E2A532E}, + {0xA115EA7A,0x1CDB3F5C}, + {0xA375B2C6,0x1E943BBC}, + {0xA2E1E950,0x1E2A532E}, + {0xA26FF6BD,0x1DD81530}, + {0xA375B2C6,0x1E943BBC}, + {0xA2E1E950,0x1E2A532E}}; /* 48kS/s */ + |