diff options
Diffstat (limited to 'media/libeffects/lvm/lib/StereoWidening/src/LVCS_Control.c')
| -rwxr-xr-x | media/libeffects/lvm/lib/StereoWidening/src/LVCS_Control.c | 273 |
1 files changed, 273 insertions, 0 deletions
diff --git a/media/libeffects/lvm/lib/StereoWidening/src/LVCS_Control.c b/media/libeffects/lvm/lib/StereoWidening/src/LVCS_Control.c new file mode 100755 index 0000000..5dfca25 --- /dev/null +++ b/media/libeffects/lvm/lib/StereoWidening/src/LVCS_Control.c @@ -0,0 +1,273 @@ +/* + * 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: 1246 $ + $Date: 2010-07-16 11:07:10 +0200 (Fri, 16 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) + { + LVC_Mixer_VarSlope_SetTimeConstant(&pInstance->MSBypassMixer.MixerStream[0],LVCS_BYPASS_MIXER_TC,pParams->SampleRate,2); + + LVC_Mixer_VarSlope_SetTimeConstant(&pInstance->MSBypassMixer.MixerStream[1],LVCS_BYPASS_MIXER_TC,pParams->SampleRate,2); + 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]; + + 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){ + LVM_INT32 Current1; + LVM_INT32 Current2; + + Current1 = LVC_Mixer_GetCurrent(&pInstance->MSBypassMixer.MixerStream[0]); + Current2 = LVC_Mixer_GetCurrent(&pInstance->MSBypassMixer.MixerStream[1]); + + if(pInstance->bInOperatingModeTransition != LVM_TRUE) + { + Current1 = 0x00000000; + Current2 = LVM_MAXINT_16; + } + pInstance->MSBypassMixer.MixerStream[0].CallbackSet = 1; + pInstance->MSBypassMixer.MixerStream[1].CallbackSet = 1; + + LVC_Mixer_Init(&pInstance->MSBypassMixer.MixerStream[0],LVM_MAXINT_16,Current1); + LVC_Mixer_Init(&pInstance->MSBypassMixer.MixerStream[1],0,Current2); + } + else + { + LVM_INT32 Current1; + LVM_INT32 Current2; + + Current1 = LVC_Mixer_GetCurrent(&pInstance->MSBypassMixer.MixerStream[0]); + Current2 = LVC_Mixer_GetCurrent(&pInstance->MSBypassMixer.MixerStream[1]); + + if(pInstance->bInOperatingModeTransition != LVM_TRUE) + { + Current1 = LVM_MAXINT_16; + Current2 = 0x00000000; + } + pInstance->MSBypassMixer.MixerStream[0].CallbackSet = 1; + pInstance->MSBypassMixer.MixerStream[1].CallbackSet = 1; + pInstance->Params.OperatingMode = OperatingModeSave; + LVC_Mixer_Init(&pInstance->MSBypassMixer.MixerStream[0],0x00000000,Current1); + LVC_Mixer_Init(&pInstance->MSBypassMixer.MixerStream[1],LVM_MAXINT_16,Current2); + } + LVC_Mixer_SetTimeConstant(&pInstance->MSBypassMixer.MixerStream[0],LVCS_BYPASS_MIXER_TC,pParams->SampleRate,2); + LVC_Mixer_SetTimeConstant(&pInstance->MSBypassMixer.MixerStream[1],LVCS_BYPASS_MIXER_TC,pParams->SampleRate,2); + + + /* 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; +} + |