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Diffstat (limited to 'media/libeffects/lvm/lib/Reverb/src/LVREV_Private.h')
| -rwxr-xr-x | media/libeffects/lvm/lib/Reverb/src/LVREV_Private.h | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/media/libeffects/lvm/lib/Reverb/src/LVREV_Private.h b/media/libeffects/lvm/lib/Reverb/src/LVREV_Private.h new file mode 100755 index 0000000..896b051 --- /dev/null +++ b/media/libeffects/lvm/lib/Reverb/src/LVREV_Private.h @@ -0,0 +1,198 @@ +/* + * 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:: */ +/* $Author: nxp007753 $ */ +/* $Revision: 1316 $ */ +/* $Date: 2010-07-23 11:53:24 +0200 (Fri, 23 Jul 2010) $ */ +/* */ +/****************************************************************************************/ + +#ifndef __LVREV_PRIVATE_H__ +#define __LVREV_PRIVATE_H__ + +#ifdef __cplusplus +extern "C" { +#endif + + +/****************************************************************************************/ +/* */ +/* Includes */ +/* */ +/****************************************************************************************/ +#include "LVREV.h" +#include "LVREV_Tables.h" +#include "BIQUAD.h" +#include "Filter.h" +#include "VectorArithmetic.h" +#include "Mixer.h" +#include "LVM_Macros.h" + + +/****************************************************************************************/ +/* */ +/* Defines */ +/* */ +/****************************************************************************************/ +/* General */ +#define ONE_OVER_SQRT_TWO 23170 /* 1/sqrt(2) * 2^15 */ +#define LVREV_B_8_on_1000 17179869 /* 0.8 * 2^31 */ +#define LVREV_HEADROOM 8192 /* -12dB * 2^15 */ +#define LVREV_2_9_INQ29 1583769190L /* 2.9 in Q29 format */ +#define LVREV_MIN3DB 0x5A82 /* -3dB in Q15 format */ + +/* Intenal constants */ +#define LVREV_LP_Poly_Order 4 +#define LVREV_LP_Poly_Shift 5 +#define LVREV_T_3_Power_0_on_4 32768 +#define LVREV_T_3_Power_1_on_4 43125 +#define LVREV_T_3_Power_2_on_4 56755 +#define LVREV_T_3_Power_3_on_4 74694 +#define LVREV_T60_SCALE 306774 /*(32767/7000)<<16 */ +#define LVREV_T_3_Power_minus0_on_4 32767 /* 3^(-0/4) * 2^15 */ +#define LVREV_T_3_Power_minus1_on_4 24898 /* 3^(-1/4) * 2^15 */ +#define LVREV_T_3_Power_minus2_on_4 18919 /* 3^(-2/4) * 2^15 */ +#define LVREV_T_3_Power_minus3_on_4 14375 /* 3^(-3/4) * 2^15 */ +#define LVREV_MAX_T3_DELAY 2527 /* ((48000 * 120 * LVREV_T_3_Power_minus3_on_4) >> 15) / 1000 */ +#define LVREV_MAX_T2_DELAY 3326 /* ((48000 * 120 * LVREV_T_3_Power_minus2_on_4) >> 15) / 1000 */ +#define LVREV_MAX_T1_DELAY 4377 /* ((48000 * 120 * LVREV_T_3_Power_minus1_on_4) >> 15) / 1000 */ +#define LVREV_MAX_T0_DELAY 5760 /* ((48000 * 120 * LVREV_T_3_Power_minus0_on_4) >> 15) / 1000 */ +#define LVREV_MAX_AP3_DELAY 1685 /* ((48000 * 120 * LVREV_T_3_Power_minus3_on_4) >> 15) / 1500 */ +#define LVREV_MAX_AP2_DELAY 2218 /* ((48000 * 120 * LVREV_T_3_Power_minus2_on_4) >> 15) / 1500 */ +#define LVREV_MAX_AP1_DELAY 2918 /* ((48000 * 120 * LVREV_T_3_Power_minus1_on_4) >> 15) / 1500 */ +#define LVREV_MAX_AP0_DELAY 3840 /* ((48000 * 120 * LVREV_T_3_Power_minus0_on_4) >> 15) / 1500 */ +#define LVREV_BYPASSMIXER_TC 1000 /* Bypass mixer time constant*/ +#define LVREV_ALLPASS_TC 1000 /* All-pass filter time constant */ +#define LVREV_ALLPASS_TAP_TC 10000 /* All-pass filter dely tap change */ +#define LVREV_FEEDBACKMIXER_TC 100 /* Feedback mixer time constant*/ +#define LVREV_OUTPUTGAIN_SHIFT 5 /* Bits shift for output gain correction */ + +/* Parameter limits */ +#define LVREV_NUM_FS 9 /* Number of supported sample rates */ +#define LVREV_MAXBLKSIZE_LIMIT 64 /* Maximum block size low limit */ +#define LVREV_MAX_LEVEL 100 /* Maximum level, 100% */ +#define LVREV_MIN_LPF_CORNER 50 /* Low pass filter limits */ +#define LVREV_MAX_LPF_CORNER 23999 +#define LVREV_MIN_HPF_CORNER 20 /* High pass filrer limits */ +#define LVREV_MAX_HPF_CORNER 1000 +#define LVREV_MAX_T60 7000 /* Maximum T60 time in ms */ +#define LVREV_MAX_DENSITY 100 /* Maximum density, 100% */ +#define LVREV_MAX_DAMPING 100 /* Maximum damping, 100% */ +#define LVREV_MAX_ROOMSIZE 100 /* Maximum room size, 100% */ + + + +/****************************************************************************************/ +/* */ +/* Structures */ +/* */ +/****************************************************************************************/ +/* Fast data structure */ +typedef struct +{ + + Biquad_1I_Order1_Taps_t HPTaps; /* High pass filter taps */ + Biquad_1I_Order1_Taps_t LPTaps; /* Low pass filter taps */ + Biquad_1I_Order1_Taps_t RevLPTaps[4]; /* Reverb low pass filters taps */ + +} LVREV_FastData_st; + + +/* Fast coefficient structure */ +typedef struct +{ + + Biquad_Instance_t HPCoefs; /* High pass filter coefficients */ + Biquad_Instance_t LPCoefs; /* Low pass filter coefficients */ + Biquad_Instance_t RevLPCoefs[4]; /* Reverb low pass filters coefficients */ + +} LVREV_FastCoef_st; + + +/* Instance parameter structure */ +typedef struct +{ + /* General */ + LVREV_InstanceParams_st InstanceParams; /* Initialisation time instance parameters */ + LVREV_MemoryTable_st MemoryTable; /* Memory table */ + LVREV_ControlParams_st CurrentParams; /* Parameters being used */ + LVREV_ControlParams_st NewParams; /* New parameters from the calling application */ + LVM_CHAR bControlPending; /* Flag to indicate new parameters are available */ + LVM_CHAR bFirstControl; /* Flag to indicate that the control function is called for the first time */ + LVM_CHAR bDisableReverb; /* Flag to indicate that the mix level is 0% and the reverb can be disabled */ + LVM_INT32 RoomSizeInms; /* Room size in msec */ + LVM_INT32 MaxBlkLen; /* Maximum block size for internal processing */ + + /* Aligned memory pointers */ + LVREV_FastData_st *pFastData; /* Fast data memory base address */ + LVREV_FastCoef_st *pFastCoef; /* Fast coefficient memory base address */ + LVM_INT32 *pScratchDelayLine[4]; /* Delay line scratch memory */ + LVM_INT32 *pScratch; /* Multi ussge scratch */ + LVM_INT32 *pInputSave; /* Reverb block input save for dry/wet mixing*/ + + /* Feedback matrix */ + Mix_1St_Cll_t FeedbackMixer[4]; /* Mixer for Pop and Click Supression caused by feedback Gain */ + + /* All-Pass Filter */ + LVM_INT32 T[4]; /* Maximum delay size of buffer */ + LVM_INT32 *pDelay_T[4]; /* Pointer to delay buffers */ + LVM_INT32 Delay_AP[4]; /* Offset to AP delay buffer start */ + LVM_INT16 AB_Selection; /* Smooth from tap A to B when 1 otherwise B to A */ + LVM_INT32 A_DelaySize[4]; /* A delay length in samples */ + LVM_INT32 B_DelaySize[4]; /* B delay length in samples */ + LVM_INT32 *pOffsetA[4]; /* Offset for the A delay tap */ + LVM_INT32 *pOffsetB[4]; /* Offset for the B delay tap */ + Mix_2St_Cll_t Mixer_APTaps[4]; /* Smoothed AP delay mixer */ + Mix_1St_Cll_t Mixer_SGFeedback[4]; /* Smoothed SAfeedback gain */ + Mix_1St_Cll_t Mixer_SGFeedforward[4]; /* Smoothed AP feedforward gain */ + + /* Output gain */ + Mix_2St_Cll_t BypassMixer; /* Dry/wet mixer */ + LVM_INT16 Gain; /* Gain applied to output to maintain average signal power */ + Mix_1St_Cll_t GainMixer; /* Gain smoothing */ + +} LVREV_Instance_st; + + +/****************************************************************************************/ +/* */ +/* Function prototypes */ +/* */ +/****************************************************************************************/ + +LVREV_ReturnStatus_en LVREV_ApplyNewSettings(LVREV_Instance_st *pPrivate); + +void ReverbBlock(LVM_INT32 *pInput, + LVM_INT32 *pOutput, + LVREV_Instance_st *pPrivate, + LVM_UINT16 NumSamples); + +LVM_INT32 BypassMixer_Callback(void *pCallbackData, + void *pGeneralPurpose, + LVM_INT16 GeneralPurpose ); + + +#ifdef __cplusplus +} +#endif + +#endif /** __LVREV_PRIVATE_H__ **/ + +/* End of file */ |