/* * 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. */ #ifndef __LVREV_PRIVATE_H__ #define __LVREV_PRIVATE_H__ /****************************************************************************************/ /* */ /* Includes */ /* */ /****************************************************************************************/ #include #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 0.707107f /* 1/sqrt(2) * 2^15 */ #define LVREV_B_8_on_1000 0.008f /* 0.8 * 2^31 */ #define LVREV_HEADROOM 0.25f /* -12dB * 2^15 */ #define LVREV_2_9_INQ29 2.9f /* 2.9 in Q29 format */ #define LVREV_MIN3DB 0.7079457f /* -3dB in Q15 format */ /* Intenal constants */ #define LVREV_LP_Poly_Order 4 #define LVREV_LP_Poly_Shift 5 #define LVREV_T60_SCALE 0.000142f /*(1/7000) */ #define LVREV_T_3_Power_0_on_4 1.0f #define LVREV_T_3_Power_1_on_4 1.316074f #define LVREV_T_3_Power_2_on_4 1.732051f #define LVREV_T_3_Power_3_on_4 2.279507f #define LVREV_T_3_Power_minus0_on_4 1.0f /* 3^(-0/4) * 2^15 */ #define LVREV_T_3_Power_minus1_on_4 0.759836f /* 3^(-1/4) * 2^15 */ #define LVREV_T_3_Power_minus2_on_4 0.577350f /* 3^(-2/4) * 2^15 */ #define LVREV_T_3_Power_minus3_on_4 0.438691f /* 3^(-3/4) * 2^15 */ /* ((192000 * 120 * LVREV_T_3_Power_minus3_on_4) >> 15) / 1000 */ #define LVREV_MAX_T3_DELAY 10108 /* ((192000 * 120 * LVREV_T_3_Power_minus2_on_4) >> 15) / 1000 */ #define LVREV_MAX_T2_DELAY 13304 /* ((192000 * 120 * LVREV_T_3_Power_minus1_on_4) >> 15) / 1000 */ #define LVREV_MAX_T1_DELAY 17508 /* ((192000 * 120 * LVREV_T_3_Power_minus0_on_4) >> 15) / 1000 */ #define LVREV_MAX_T0_DELAY 23040 /* ((192000 * 120 * LVREV_T_3_Power_minus3_on_4) >> 15) / 1500 */ #define LVREV_MAX_AP3_DELAY 6740 /* ((192000 * 120 * LVREV_T_3_Power_minus2_on_4) >> 15) / 1500 */ #define LVREV_MAX_AP2_DELAY 8872 /* ((192000 * 120 * LVREV_T_3_Power_minus1_on_4) >> 15) / 1500 */ #define LVREV_MAX_AP1_DELAY 11672 /* ((192000 * 120 * LVREV_T_3_Power_minus0_on_4) >> 15) / 1500 */ #define LVREV_MAX_AP0_DELAY 15360 #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 13 /* 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 */ /* */ /****************************************************************************************/ typedef struct { /* General */ LVREV_InstanceParams_st InstanceParams; /* Initialisation time instance parameters */ 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 */ std::unique_ptr> pRevHPFBiquad; /* Biquad filter instance for HPF */ std::unique_ptr> pRevLPFBiquad; /* Biquad filter instance for LPF */ std::array>, LVREV_DELAYLINES_4> revLPFBiquad; /* Biquad filter instance for Reverb LPF */ LVM_FLOAT* pScratchDelayLine[LVREV_DELAYLINES_4]; /* Delay line scratch memory */ LVM_FLOAT* pScratch; /* Multi ussge scratch */ LVM_FLOAT* pInputSave; /* Reverb block input save for dry/wet mixing*/ /* Feedback matrix */ Mix_1St_Cll_FLOAT_t FeedbackMixer[LVREV_DELAYLINES_4]; /* Mixer for Pop and Click Suppression \ caused by feedback Gain */ /* All-Pass Filter */ LVM_INT32 T[LVREV_DELAYLINES_4]; /* Maximum delay size of buffer */ LVM_FLOAT* pDelay_T[LVREV_DELAYLINES_4]; /* Pointer to delay buffers */ LVM_INT32 Delay_AP[LVREV_DELAYLINES_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[LVREV_DELAYLINES_4]; /* A delay length in samples */ LVM_INT32 B_DelaySize[LVREV_DELAYLINES_4]; /* B delay length in samples */ LVM_FLOAT* pOffsetA[LVREV_DELAYLINES_4]; /* Offset for the A delay tap */ LVM_FLOAT* pOffsetB[LVREV_DELAYLINES_4]; /* Offset for the B delay tap */ Mix_2St_Cll_FLOAT_t Mixer_APTaps[LVREV_DELAYLINES_4]; /* Smoothed AP delay mixer */ Mix_1St_Cll_FLOAT_t Mixer_SGFeedback[LVREV_DELAYLINES_4]; /* Smoothed SAfeedback gain */ Mix_1St_Cll_FLOAT_t Mixer_SGFeedforward[LVREV_DELAYLINES_4]; /* Smoothed AP feedforward gain */ /* Output gain */ Mix_2St_Cll_FLOAT_t BypassMixer; /* Dry/wet mixer */ LVM_FLOAT Gain; /* Gain applied to output to maintain average signal power */ Mix_1St_Cll_FLOAT_t GainMixer; /* Gain smoothing */ } LVREV_Instance_st; /****************************************************************************************/ /* */ /* Function prototypes */ /* */ /****************************************************************************************/ LVREV_ReturnStatus_en LVREV_ApplyNewSettings(LVREV_Instance_st* pPrivate); void ReverbBlock(LVM_FLOAT* pInput, LVM_FLOAT* pOutput, LVREV_Instance_st* pPrivate, LVM_UINT16 NumSamples); LVM_INT32 BypassMixer_Callback(void* pCallbackData, void* pGeneralPurpose, LVM_INT16 GeneralPurpose); #endif /** __LVREV_PRIVATE_H__ **/ /* End of file */