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Diffstat (limited to 'media/libeffects/lvm/lib/SpectrumAnalyzer/src/LVPSA_Private.h')
| -rwxr-xr-x | media/libeffects/lvm/lib/SpectrumAnalyzer/src/LVPSA_Private.h | 159 |
1 files changed, 159 insertions, 0 deletions
diff --git a/media/libeffects/lvm/lib/SpectrumAnalyzer/src/LVPSA_Private.h b/media/libeffects/lvm/lib/SpectrumAnalyzer/src/LVPSA_Private.h new file mode 100755 index 0000000..eb9fa8f --- /dev/null +++ b/media/libeffects/lvm/lib/SpectrumAnalyzer/src/LVPSA_Private.h @@ -0,0 +1,159 @@ +/* + * 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) $*/ +/* */ +/************************************************************************/ +#ifndef _LVPSA_PRIVATE_H_ +#define _LVPSA_PRIVATE_H_ + +#include "LVPSA.h" +#include "BIQUAD.h" +#include "LVPSA_QPD.h" +#include "LVM_Macros.h" + + + +#ifdef __cplusplus +extern "C" { +#endif /* __cplusplus */ + +/********************************************************************************** + CONSTANT DEFINITIONS +***********************************************************************************/ + +/* Memory */ +#define LVPSA_INSTANCE_ALIGN 4 /* 32-bit alignment for structures */ +#define LVPSA_SCRATCH_ALIGN 4 /* 32-bit alignment for long data */ +#define LVPSA_COEF_ALIGN 4 /* 32-bit alignment for long words */ +#define LVPSA_DATA_ALIGN 4 /* 32-bit alignment for long data */ + +#define LVPSA_MEMREGION_INSTANCE 0 /* Offset to instance memory region in memory table */ +#define LVPSA_MEMREGION_PERSISTENT_COEF 1 /* Offset to persistent coefficients memory region in memory table */ +#define LVPSA_MEMREGION_PERSISTENT_DATA 2 /* Offset to persistent taps memory region in memory table */ +#define LVPSA_MEMREGION_SCRATCH 3 /* Offset to scratch memory region in memory table */ + +#define LVPSA_NR_SUPPORTED_RATE 9 /* From 8000Hz to 48000Hz */ +#define LVPSA_NR_SUPPORTED_SPEED 3 /* LOW, MEDIUM, HIGH */ + +#define LVPSA_MAXBUFFERDURATION 4000 /* Maximum length in ms of the levels buffer */ +#define LVPSA_MAXINPUTBLOCKSIZE 5000 /* Maximum length in mono samples of the block to process */ +#define LVPSA_NBANDSMIN 1 /* Minimum number of frequency band */ +#define LVPSA_NBANDSMAX 30 /* Maximum number of frequency band */ +#define LVPSA_MAXCENTERFREQ 20000 /* Maximum possible center frequency */ +#define LVPSA_MINPOSTGAIN -15 /* Minimum possible post gain */ +#define LVPSA_MAXPOSTGAIN 15 /* Maximum possible post gain */ +#define LVPSA_MINQFACTOR 25 /* Minimum possible Q factor */ +#define LVPSA_MAXQFACTOR 1200 /* Maximum possible Q factor */ + +#define LVPSA_MAXLEVELDECAYFACTOR 0x4111 /* Decay factor for the maximum values calculation */ +#define LVPSA_MAXLEVELDECAYSHIFT 14 /* Decay shift for the maximum values calculation */ + +#define LVPSA_MAXUNSIGNEDCHAR 0xFF + +#define LVPSA_FsInvertShift 31 +#define LVPSA_GAINSHIFT 11 +#define LVPSA_FREQSHIFT 25 + +/********************************************************************************** + TYPES DEFINITIONS +***********************************************************************************/ + +#define LVPSA_InternalRefreshTime 0x0014 /* 20 ms (50Hz) in Q16.0 */ +#define LVPSA_InternalRefreshTimeInv 0x0666 /* 1/20ms left shifted by 15 */ +#define LVPSA_InternalRefreshTimeShift 15 + + +/* Precision of the filter */ +typedef enum +{ + LVPSA_SimplePrecisionFilter, /* Simple precision */ + LVPSA_DoublePrecisionFilter /* Double precision */ +} LVPSA_BPFilterPrecision_en; + +typedef struct +{ + LVM_CHAR bControlPending; /* Flag incating a change of the control parameters */ + LVM_UINT16 nBands; /* Number of bands of the spectrum analyzer */ + LVM_UINT16 MaxInputBlockSize; /* Maximum input data buffer size */ + + LVPSA_ControlParams_t CurrentParams; /* Current control parameters of the module */ + LVPSA_ControlParams_t NewParams; /* New control parameters given by the user */ + LVPSA_MemTab_t MemoryTable; + + LVPSA_BPFilterPrecision_en *pBPFiltersPrecision; /* Points a nBands elements array that contains the filter precision for each band */ + Biquad_Instance_t *pBP_Instances; /* Points a nBands elements array that contains the band pass filter instance for each band */ + Biquad_1I_Order2_Taps_t *pBP_Taps; /* Points a nBands elements array that contains the band pass filter taps for each band */ + QPD_State_t *pQPD_States; /* Points a nBands elements array that contains the QPD filter instance for each band */ + QPD_Taps_t *pQPD_Taps; /* Points a nBands elements array that contains the QPD filter taps for each band */ + LVM_UINT16 *pPostGains; /* Points a nBands elements array that contains the post-filter gains for each band */ + + LVPSA_FilterParam_t *pFiltersParams; /* Copy of the filters parameters from the input parameters */ + + + LVM_UINT16 nSamplesBufferUpdate; /* Number of samples to make 20ms */ + LVM_INT32 BufferUpdateSamplesCount; /* Counter used to know when to put a new value in the buffer */ + LVM_UINT16 nRelevantFilters; /* Number of relevent filters depending on sampling frequency and bands center frequency */ + LVM_UINT16 LocalSamplesCount; /* Counter used to update the SpectralDataBufferAudioTime */ + + LVM_UINT16 DownSamplingFactor; /* Down sampling factor depending on the sampling frequency */ + LVM_UINT16 DownSamplingCount; /* Counter used for the downsampling handling */ + + LVM_UINT16 SpectralDataBufferDuration; /* Length of the buffer in time (ms) defined by the application */ + LVM_UINT8 *pSpectralDataBufferStart; /* Starting address of the buffer */ + LVM_UINT8 *pSpectralDataBufferWritePointer; /* Current position of the writting pointer of the buffer */ + LVPSA_Time SpectralDataBufferAudioTime; /* AudioTime at which the last value save occured in the buffer */ + LVM_UINT32 SpectralDataBufferLength; /* Number of spectrum data value that the buffer can contain (per band) + = SpectralDataBufferDuration/20ms */ + + LVM_UINT8 *pPreviousPeaks; /* Points to a nBands elements array that contains the previous peak value of the level + detection. Those values are decremented after each call to the GetSpectrum function */ + +}LVPSA_InstancePr_t, *pLVPSA_InstancePr_t; + + + +/********************************************************************************** + FUNCTIONS PROTOTYPE +***********************************************************************************/ +/************************************************************************************/ +/* */ +/* FUNCTION: LVPSA_ApplyNewSettings */ +/* */ +/* DESCRIPTION: */ +/* Reinitialize some parameters and changes filters' coefficients if */ +/* some control parameters have changed. */ +/* */ +/* PARAMETERS: */ +/* pInst Pointer to the instance */ +/* */ +/* RETURNS: */ +/* LVPSA_OK Always succeeds */ +/* */ +/************************************************************************************/ +LVPSA_RETURN LVPSA_ApplyNewSettings (LVPSA_InstancePr_t *pInst); + +#ifdef __cplusplus +} +#endif /* __cplusplus */ + +#endif /* _LVPSA_PRIVATE_H */ |