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-rw-r--r--media/libeffects/lvm/lib/Common/src/LVC_Mixer_SetTarget.c66
1 files changed, 0 insertions, 66 deletions
diff --git a/media/libeffects/lvm/lib/Common/src/LVC_Mixer_SetTarget.c b/media/libeffects/lvm/lib/Common/src/LVC_Mixer_SetTarget.c
deleted file mode 100644
index 5efa501..0000000
--- a/media/libeffects/lvm/lib/Common/src/LVC_Mixer_SetTarget.c
+++ /dev/null
@@ -1,66 +0,0 @@
-/*
- * 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.
- */
-
-#include "LVM_Types.h"
-#include "LVM_Macros.h"
-#include "LVC_Mixer_Private.h"
-
-/************************************************************************/
-/* FUNCTION: */
-/* LVMixer3_SetTarget */
-/* */
-/* DESCRIPTION: */
-/* This function updates the private instance parameters: Shift,Target,*/
-/* Current for a given Audio Stream based on new value of TargetGain */
-/* */
-/* This function caclulates the "Shift" required to provide the */
-/* integer part of TargetGain and fractional gain values "Target" and */
-/* "Current" based on maximum(TargetGain,CurrentGain) */
-/* E.g. CurrentGain=1.9 and TargetGain=2.5 then based on */
-/* MaxGain of 2.5, Shift = 2, Current=1.9/4=0.475, Target=2.5/4=0.625 */
-/* Therefore integer gain of 4 is provided by Left Shift of 2 and */
-/* fraction gain is provided through Current=0.475 and Target=0.625 */
-/* PARAMETERS: */
-/* pStream - ptr to Instance Parameter Structure LVMixer3_st */
-/* for an Audio Stream */
-/* TargetGain - TargetGain value in Q 16.15 format */
-/* */
-/* RETURNS: */
-/* void */
-/* */
-/************************************************************************/
-
-void LVC_Mixer_SetTarget(LVMixer3_st *pStream,
- LVM_INT32 TargetGain)
-{
- LVM_INT32 Shift=0;
- LVM_INT32 CurrentGain;
- LVM_INT32 MaxGain=TargetGain; // MaxGain is in Q16.15 format
- Mix_Private_st *pInstance=(Mix_Private_st *)pStream->PrivateParams;
- CurrentGain=pInstance->Current>>(16-pInstance->Shift); // CurrentGain in Q16.15 format
- if(CurrentGain>MaxGain)
- MaxGain=CurrentGain; // MaxGain=max(CurrentGain,TargetGain)
-
- MaxGain=MaxGain>>15; // MaxGain in Q31.0 format i.e Integer part only
- while(MaxGain>0){ // Update Shift required to provide integer gain
- Shift++;
- MaxGain=MaxGain>>1;
- }
- pInstance->Target=TargetGain<<(16-Shift); // Update fractional gain Target
- pInstance->Current=CurrentGain<<(16-Shift); // Update fractional gain Current
- pInstance->Shift=Shift; // Update Shift
-}