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/*
* 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.
*/
/************************************************************************************
$Author: nxp007753 $
$Revision: 1331 $
$Date: 2010-07-27 12:26:23 +0200 (Tue, 27 Jul 2010) $
*************************************************************************************/
/************************************************************************************/
/* */
/* Includes */
/* */
/************************************************************************************/
#include "LVCS.h"
#include "LVCS_Private.h"
#include "LVCS_Tables.h"
/************************************************************************************/
/* */
/* FUNCTION: LVCS_GetParameters */
/* */
/* DESCRIPTION: */
/* Request the Concert Sound parameters. The current parameter set is returned */
/* via the parameter pointer. */
/* */
/* PARAMETERS: */
/* hInstance Instance handle */
/* pParams Pointer to an empty parameter structure */
/* */
/* RETURNS: */
/* LVCS_Success Always succeeds */
/* */
/* NOTES: */
/* 1. This function may be interrupted by the LVCS_Process function */
/* */
/************************************************************************************/
LVCS_ReturnStatus_en LVCS_GetParameters(LVCS_Handle_t hInstance,
LVCS_Params_t *pParams)
{
LVCS_Instance_t *pInstance =(LVCS_Instance_t *)hInstance;
*pParams = pInstance->Params;
return(LVCS_SUCCESS);
}
/************************************************************************************/
/* */
/* FUNCTION: LVCS_Control */
/* */
/* DESCRIPTION: */
/* Sets or changes the Concert Sound parameters. */
/* */
/* PARAMETERS: */
/* hInstance Instance handle */
/* pParams Pointer to a parameter structure */
/* */
/* RETURNS: */
/* LVCS_Success Succeeded */
/* */
/* NOTES: */
/* 1. This function must not be interrupted by the LVCS_Process function */
/* */
/************************************************************************************/
LVCS_ReturnStatus_en LVCS_Control(LVCS_Handle_t hInstance,
LVCS_Params_t *pParams)
{
LVM_INT16 Offset;
LVCS_Instance_t *pInstance =(LVCS_Instance_t *)hInstance;
LVCS_ReturnStatus_en err;
LVCS_Modes_en OperatingModeSave = pInstance->Params.OperatingMode;
if (pParams->SampleRate != pInstance->Params.SampleRate)
{
pInstance->TimerParams.SamplingRate = LVCS_SampleRateTable[pParams->SampleRate];
}
/*
* If the reverb level has changed
*/
if(pInstance->Params.ReverbLevel != pParams->ReverbLevel)
{
err=LVCS_ReverbGeneratorInit(hInstance,pParams);
}
/*
* If the sample rate or speaker has changed then perform a full re-initialisation
*/
if ((pInstance->Params.SampleRate != pParams->SampleRate) ||
(pInstance->Params.SpeakerType != pParams->SpeakerType))
{
const LVCS_VolCorrect_t *pLVCS_VolCorrectTable;
/*
* Output device
*/
pInstance->OutputDevice = LVCS_HEADPHONE;
/*
* Get the volume correction parameters
*/
/* Use internal coefficient table */
pLVCS_VolCorrectTable = (LVCS_VolCorrect_t*)&LVCS_VolCorrectTable[0];
Offset = (LVM_INT16)(pParams->SpeakerType + pParams->SourceFormat*(1+LVCS_EX_HEADPHONES));
pInstance->VolCorrect = pLVCS_VolCorrectTable[Offset];
LVC_Mixer_Init(&pInstance->BypassMix.Mixer_Instance.MixerStream[0],0,0);
{
LVM_UINT32 Gain;
const Gain_t *pOutputGainTable = (Gain_t*)&LVCS_OutputGainTable[0];
Gain = (LVM_UINT32)(pOutputGainTable[Offset].Loss * LVM_MAXINT_16);
Gain = (LVM_UINT32)pOutputGainTable[Offset].UnprocLoss * (Gain >> 15);
Gain=Gain>>15;
/*
* Apply the gain correction and shift, note the result is in Q3.13 format
*/
Gain = (Gain * pInstance->VolCorrect.GainMin) >>12;
LVC_Mixer_Init(&pInstance->BypassMix.Mixer_Instance.MixerStream[1],0,Gain);
LVC_Mixer_VarSlope_SetTimeConstant(&pInstance->BypassMix.Mixer_Instance.MixerStream[0],
LVCS_BYPASS_MIXER_TC,pParams->SampleRate,2);
LVC_Mixer_VarSlope_SetTimeConstant(&pInstance->BypassMix.Mixer_Instance.MixerStream[1],
LVCS_BYPASS_MIXER_TC,pParams->SampleRate,2);
}
err=LVCS_SEnhancerInit(hInstance,
pParams);
err=LVCS_ReverbGeneratorInit(hInstance,
pParams);
err=LVCS_EqualiserInit(hInstance,
pParams);
err=LVCS_BypassMixInit(hInstance,
pParams);
}
/*
* Check if the effect level or source format has changed
*/
else if ((pInstance->Params.EffectLevel != pParams->EffectLevel) ||
(pInstance->Params.SourceFormat != pParams->SourceFormat))
{
const LVCS_VolCorrect_t *pLVCS_VolCorrectTable;
/*
* Get the volume correction parameters
*/
/* Use internal coefficient table */
pLVCS_VolCorrectTable = (LVCS_VolCorrect_t*)&LVCS_VolCorrectTable[0];
Offset = (LVM_INT16)(pParams->SpeakerType + pParams->SourceFormat*(1+LVCS_EX_HEADPHONES));
pInstance->VolCorrect = pLVCS_VolCorrectTable[Offset];
/* Update the effect level and alpha-mixer gains */
err=LVCS_BypassMixInit(hInstance,
pParams);
if(err != LVCS_SUCCESS)
{
return err;
}
}
else
{
pInstance->Params = *pParams;
}
/*
* Update the instance parameters
*/
pInstance->Params = *pParams;
/* Stay on the current operating mode until the transition is done */
if((pParams->OperatingMode != OperatingModeSave) ||
(pInstance->bInOperatingModeTransition == LVM_TRUE)){
/* Set the reverb delay timeout */
if(pInstance->bInOperatingModeTransition != LVM_TRUE){
pInstance->bTimerDone = LVM_FALSE;
pInstance->TimerParams.TimeInMs = (LVM_INT16)(((pInstance->Reverberation.DelaySize << 2)/pInstance->TimerParams.SamplingRate) + 1);
LVM_Timer_Init ( &pInstance->TimerInstance,
&pInstance->TimerParams);
}
/* Update the effect level and alpha-mixer gains */
err=LVCS_BypassMixInit(hInstance,
pParams);
/* Change transition bypass mixer settings if needed depending on transition type */
if(pParams->OperatingMode != LVCS_OFF){
pInstance->MSTarget0=LVM_MAXINT_16;
pInstance->MSTarget1=0;
}
else
{
pInstance->Params.OperatingMode = OperatingModeSave;
pInstance->MSTarget1=LVM_MAXINT_16;
pInstance->MSTarget0=0;
}
/* Set transition flag */
pInstance->bInOperatingModeTransition = LVM_TRUE;
}
return(LVCS_SUCCESS);
}
/****************************************************************************************/
/* */
/* FUNCTION: LVCS_TimerCallBack */
/* */
/* DESCRIPTION: */
/* CallBack function of the Timer. */
/* */
/****************************************************************************************/
void LVCS_TimerCallBack (void* hInstance, void* pCallBackParams, LVM_INT32 CallbackParam)
{
LVCS_Instance_t *pInstance = (LVCS_Instance_t *)hInstance;
/* Avoid warnings because pCallBackParams and CallbackParam are not used*/
if((pCallBackParams != LVM_NULL) || (CallbackParam != 0)){
pCallBackParams = hInstance;
CallbackParam = 0;
return;
}
pInstance->bTimerDone = LVM_TRUE;
return;
}
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