| /* |
| * 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 FILES |
| ***********************************************************************************/ |
| |
| #include "Mixer_private.h" |
| #include "LVM_Macros.h" |
| |
| /********************************************************************************** |
| FUNCTION CORE_MIXSOFT_1ST_D32C31_WRA |
| ***********************************************************************************/ |
| |
| #ifdef BUILD_FLOAT /* BUILD_FLOAT */ |
| void Core_MixInSoft_D32C31_SAT( Mix_1St_Cll_FLOAT_t *pInstance, |
| const LVM_FLOAT *src, |
| LVM_FLOAT *dst, |
| LVM_INT16 n) |
| { |
| LVM_FLOAT Temp1,Temp2,Temp3; |
| LVM_INT16 OutLoop; |
| LVM_INT16 InLoop; |
| LVM_FLOAT TargetTimesOneMinAlpha; |
| LVM_FLOAT CurrentTimesAlpha; |
| LVM_INT16 ii,jj; |
| |
| |
| InLoop = (LVM_INT16)(n >> 2); /* Process per 4 samples */ |
| OutLoop = (LVM_INT16)(n - (InLoop << 2)); |
| |
| TargetTimesOneMinAlpha = ((1.0f -pInstance->Alpha) * pInstance->Target); |
| if (pInstance->Target >= pInstance->Current){ |
| TargetTimesOneMinAlpha +=(LVM_FLOAT)(2.0f / 2147483647.0f); /* Ceil*/ |
| } |
| |
| if (OutLoop){ |
| |
| CurrentTimesAlpha = pInstance->Current * pInstance->Alpha; |
| pInstance->Current = TargetTimesOneMinAlpha + CurrentTimesAlpha; |
| |
| for (ii = OutLoop; ii != 0; ii--){ |
| Temp1 = *src++; |
| Temp2 = *dst; |
| |
| Temp3 = Temp1 * (pInstance->Current); |
| Temp1 = Temp2 + Temp3; |
| |
| if (Temp1 > 1.0f) |
| Temp1 = 1.0f; |
| else if (Temp1 < -1.0f) |
| Temp1 = -1.0f; |
| |
| *dst++ = Temp1; |
| } |
| } |
| |
| for (ii = InLoop; ii != 0; ii--){ |
| |
| CurrentTimesAlpha = pInstance->Current * pInstance->Alpha; |
| pInstance->Current = TargetTimesOneMinAlpha + CurrentTimesAlpha; |
| |
| for (jj = 4; jj!=0 ; jj--){ |
| Temp1 = *src++; |
| Temp2 = *dst; |
| |
| Temp3 = Temp1 * (pInstance->Current); |
| Temp1 = Temp2 + Temp3; |
| |
| if (Temp1 > 1.0f) |
| Temp1 = 1.0f; |
| else if (Temp1 < -1.0f) |
| Temp1 = -1.0f; |
| *dst++ = Temp1; |
| } |
| } |
| } |
| #else |
| void Core_MixInSoft_D32C31_SAT( Mix_1St_Cll_t *pInstance, |
| const LVM_INT32 *src, |
| LVM_INT32 *dst, |
| LVM_INT16 n) |
| { |
| LVM_INT32 Temp1,Temp2,Temp3; |
| LVM_INT16 OutLoop; |
| LVM_INT16 InLoop; |
| LVM_INT32 TargetTimesOneMinAlpha; |
| LVM_INT32 CurrentTimesAlpha; |
| LVM_INT16 ii,jj; |
| LVM_INT16 CurrentShort; |
| |
| InLoop = (LVM_INT16)(n >> 2); /* Process per 4 samples */ |
| OutLoop = (LVM_INT16)(n - (InLoop << 2)); |
| |
| MUL32x32INTO32((0x7FFFFFFF-pInstance->Alpha),pInstance->Target,TargetTimesOneMinAlpha,31); /* Q31 * Q0 in Q0 */ |
| if (pInstance->Target >= pInstance->Current){ |
| TargetTimesOneMinAlpha +=2; /* Ceil*/ |
| } |
| |
| if (OutLoop){ |
| MUL32x32INTO32(pInstance->Current,pInstance->Alpha,CurrentTimesAlpha,31); /* Q0 * Q31 in Q0 */ |
| pInstance->Current = TargetTimesOneMinAlpha + CurrentTimesAlpha; /* Q0 + Q0 into Q0*/ |
| CurrentShort = (LVM_INT16)(pInstance->Current>>16); /* From Q31 to Q15*/ |
| |
| for (ii = OutLoop; ii != 0; ii--){ |
| Temp1=*src++; |
| Temp2=*dst; |
| MUL32x16INTO32(Temp1,CurrentShort,Temp3,15) |
| Temp1=(Temp2>>1)+(Temp3>>1); |
| |
| if (Temp1 > 0x3FFFFFFF) |
| Temp1 = 0x7FFFFFFF; |
| else if (Temp1 < - 0x40000000) |
| Temp1 = 0x80000000; |
| else |
| Temp1=(Temp1<<1); |
| *dst++ = Temp1; |
| } |
| } |
| |
| for (ii = InLoop; ii != 0; ii--){ |
| MUL32x32INTO32(pInstance->Current,pInstance->Alpha,CurrentTimesAlpha,31); /* Q0 * Q31 in Q0 */ |
| pInstance->Current = TargetTimesOneMinAlpha + CurrentTimesAlpha; /* Q0 + Q0 into Q0*/ |
| CurrentShort = (LVM_INT16)(pInstance->Current>>16); /* From Q31 to Q15*/ |
| |
| for (jj = 4; jj!=0 ; jj--){ |
| Temp1=*src++; |
| Temp2=*dst; |
| MUL32x16INTO32(Temp1,CurrentShort,Temp3,15) |
| Temp1=(Temp2>>1)+(Temp3>>1); |
| |
| if (Temp1 > 0x3FFFFFFF) |
| Temp1 = 0x7FFFFFFF; |
| else if (Temp1 < - 0x40000000) |
| Temp1 = 0x80000000; |
| else |
| Temp1=(Temp1<<1); |
| *dst++ = Temp1; |
| } |
| } |
| } |
| #endif |
| /**********************************************************************************/ |