| /* |
| * 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 <system/audio.h> |
| |
| #include "LVC_Mixer_Private.h" |
| #include "VectorArithmetic.h" |
| #include "ScalarArithmetic.h" |
| |
| /********************************************************************************** |
| DEFINITIONS |
| ***********************************************************************************/ |
| |
| #define TRUE 1 |
| #define FALSE 0 |
| |
| #define ARRAY_SIZE(a) ((sizeof(a)) / (sizeof(*(a)))) |
| |
| /********************************************************************************** |
| FUNCTION LVC_MixSoft_1St_2i_D16C31_SAT |
| ***********************************************************************************/ |
| #ifdef SUPPORT_MC |
| /* This threshold is used to decide on the processing to be applied on |
| * front center and back center channels |
| */ |
| #define LVM_VOL_BAL_THR (0.000016f) |
| void LVC_MixSoft_1St_MC_float_SAT (LVMixer3_2St_FLOAT_st *ptrInstance, |
| const LVM_FLOAT *src, |
| LVM_FLOAT *dst, |
| LVM_INT16 NrFrames, |
| LVM_INT32 NrChannels, |
| LVM_INT32 ChMask) |
| { |
| char HardMixing = TRUE; |
| LVM_FLOAT TargetGain; |
| Mix_Private_FLOAT_st Target_lfe = {LVM_MAXFLOAT, LVM_MAXFLOAT, LVM_MAXFLOAT}; |
| Mix_Private_FLOAT_st Target_ctr = {LVM_MAXFLOAT, LVM_MAXFLOAT, LVM_MAXFLOAT}; |
| Mix_Private_FLOAT_st *pInstance1 = \ |
| (Mix_Private_FLOAT_st *)(ptrInstance->MixerStream[0].PrivateParams); |
| Mix_Private_FLOAT_st *pInstance2 = \ |
| (Mix_Private_FLOAT_st *)(ptrInstance->MixerStream[1].PrivateParams); |
| Mix_Private_FLOAT_st *pMixPrivInst[4] = {pInstance1, pInstance2, &Target_ctr, &Target_lfe}; |
| Mix_Private_FLOAT_st *pInstance[NrChannels]; |
| |
| if (audio_channel_mask_get_representation(ChMask) |
| == AUDIO_CHANNEL_REPRESENTATION_INDEX) |
| { |
| for (int i = 0; i < 2; i++) |
| { |
| pInstance[i] = pMixPrivInst[i]; |
| } |
| for (int i = 2; i < NrChannels; i++) |
| { |
| pInstance[i] = pMixPrivInst[2]; |
| } |
| } |
| else |
| { |
| // TODO: Combine with system/media/audio_utils/Balance.cpp |
| // Constants in system/media/audio/include/system/audio-base.h |
| // 'mixInstIdx' is used to map the appropriate mixer instance for each channel. |
| const int mixInstIdx[] = { |
| 0, // AUDIO_CHANNEL_OUT_FRONT_LEFT = 0x1u, |
| 1, // AUDIO_CHANNEL_OUT_FRONT_RIGHT = 0x2u, |
| 2, // AUDIO_CHANNEL_OUT_FRONT_CENTER = 0x4u, |
| 3, // AUDIO_CHANNEL_OUT_LOW_FREQUENCY = 0x8u, |
| 0, // AUDIO_CHANNEL_OUT_BACK_LEFT = 0x10u, |
| 1, // AUDIO_CHANNEL_OUT_BACK_RIGHT = 0x20u, |
| 0, // AUDIO_CHANNEL_OUT_FRONT_LEFT_OF_CENTER = 0x40u, |
| 1, // AUDIO_CHANNEL_OUT_FRONT_RIGHT_OF_CENTER = 0x80u, |
| 2, // AUDIO_CHANNEL_OUT_BACK_CENTER = 0x100u, |
| 0, // AUDIO_CHANNEL_OUT_SIDE_LEFT = 0x200u, |
| 1, // AUDIO_CHANNEL_OUT_SIDE_RIGHT = 0x400u, |
| 2, // AUDIO_CHANNEL_OUT_TOP_CENTER = 0x800u, |
| 0, // AUDIO_CHANNEL_OUT_TOP_FRONT_LEFT = 0x1000u, |
| 2, // AUDIO_CHANNEL_OUT_TOP_FRONT_CENTER = 0x2000u, |
| 1, // AUDIO_CHANNEL_OUT_TOP_FRONT_RIGHT = 0x4000u, |
| 0, // AUDIO_CHANNEL_OUT_TOP_BACK_LEFT = 0x8000u, |
| 2, // AUDIO_CHANNEL_OUT_TOP_BACK_CENTER = 0x10000u, |
| 1, // AUDIO_CHANNEL_OUT_TOP_BACK_RIGHT = 0x20000u, |
| 0, // AUDIO_CHANNEL_OUT_TOP_SIDE_LEFT = 0x40000u, |
| 1, // AUDIO_CHANNEL_OUT_TOP_SIDE_RIGHT = 0x80000u |
| }; |
| if (pInstance1->Target <= LVM_VOL_BAL_THR || |
| pInstance2->Target <= LVM_VOL_BAL_THR) |
| { |
| Target_ctr.Target = 0.0f; |
| Target_ctr.Current = 0.0f; |
| Target_ctr.Delta = 0.0f; |
| } |
| const unsigned int idxArrSize = ARRAY_SIZE(mixInstIdx); |
| for (unsigned int i = 0, channel = ChMask; channel !=0 ; ++i) |
| { |
| const unsigned int idx = __builtin_ctz(channel); |
| if (idx < idxArrSize) |
| { |
| pInstance[i] = pMixPrivInst[mixInstIdx[idx]]; |
| } |
| else |
| { |
| pInstance[i] = pMixPrivInst[2]; |
| } |
| channel &= ~(1 << idx); |
| } |
| } |
| |
| if (NrFrames <= 0) return; |
| |
| /****************************************************************************** |
| SOFT MIXING |
| *******************************************************************************/ |
| |
| if ((pInstance1->Current != pInstance1->Target) || |
| (pInstance2->Current != pInstance2->Target)) |
| { |
| // TODO: combine similar checks below. |
| if (pInstance1->Delta == LVM_MAXFLOAT |
| || Abs_Float(pInstance1->Current - pInstance1->Target) < pInstance1->Delta) |
| { |
| /* Difference is not significant anymore. Make them equal. */ |
| pInstance1->Current = pInstance1->Target; |
| TargetGain = pInstance1->Target; |
| LVC_Mixer_SetTarget(&(ptrInstance->MixerStream[0]), TargetGain); |
| } |
| else |
| { |
| /* Soft mixing has to be applied */ |
| HardMixing = FALSE; |
| } |
| |
| if (HardMixing == TRUE) |
| { |
| if (pInstance2->Delta == LVM_MAXFLOAT |
| || Abs_Float(pInstance2->Current - pInstance2->Target) < pInstance2->Delta) |
| { |
| /* Difference is not significant anymore. Make them equal. */ |
| pInstance2->Current = pInstance2->Target; |
| TargetGain = pInstance2->Target; |
| LVC_Mixer_SetTarget(&(ptrInstance->MixerStream[1]), TargetGain); |
| } |
| else |
| { |
| /* Soft mixing has to be applied */ |
| HardMixing = FALSE; |
| } |
| } |
| |
| if (HardMixing == FALSE) |
| { |
| LVC_Core_MixSoft_1St_MC_float_WRA (&pInstance[0], |
| src, dst, NrFrames, NrChannels); |
| } |
| } |
| |
| /****************************************************************************** |
| HARD MIXING |
| *******************************************************************************/ |
| |
| if (HardMixing == TRUE) |
| { |
| if ((pInstance1->Target == LVM_MAXFLOAT) && (pInstance2->Target == LVM_MAXFLOAT)) |
| { |
| if (src != dst) |
| { |
| Copy_Float(src, dst, NrFrames*NrChannels); |
| } |
| } |
| else |
| { |
| LVC_Core_MixHard_1St_MC_float_SAT(&(pInstance[0]), |
| src, dst, NrFrames, NrChannels); |
| } |
| } |
| |
| /****************************************************************************** |
| CALL BACK |
| *******************************************************************************/ |
| |
| if (ptrInstance->MixerStream[0].CallbackSet) |
| { |
| if (Abs_Float(pInstance1->Current - pInstance1->Target) < pInstance1->Delta) |
| { |
| pInstance1->Current = pInstance1->Target; /* Difference is not significant anymore. \ |
| Make them equal. */ |
| TargetGain = pInstance1->Target; |
| LVC_Mixer_SetTarget(&ptrInstance->MixerStream[0], TargetGain); |
| ptrInstance->MixerStream[0].CallbackSet = FALSE; |
| if (ptrInstance->MixerStream[0].pCallBack != 0) |
| { |
| (*ptrInstance->MixerStream[0].pCallBack) (\ |
| ptrInstance->MixerStream[0].pCallbackHandle, |
| ptrInstance->MixerStream[0].pGeneralPurpose, |
| ptrInstance->MixerStream[0].CallbackParam); |
| } |
| } |
| } |
| if (ptrInstance->MixerStream[1].CallbackSet) |
| { |
| if (Abs_Float(pInstance2->Current - pInstance2->Target) < pInstance2->Delta) |
| { |
| pInstance2->Current = pInstance2->Target; /* Difference is not significant anymore. |
| Make them equal. */ |
| TargetGain = pInstance2->Target; |
| LVC_Mixer_SetTarget(&ptrInstance->MixerStream[1], TargetGain); |
| ptrInstance->MixerStream[1].CallbackSet = FALSE; |
| if (ptrInstance->MixerStream[1].pCallBack != 0) |
| { |
| (*ptrInstance->MixerStream[1].pCallBack) (\ |
| ptrInstance->MixerStream[1].pCallbackHandle, |
| ptrInstance->MixerStream[1].pGeneralPurpose, |
| ptrInstance->MixerStream[1].CallbackParam); |
| } |
| } |
| } |
| } |
| #endif |
| void LVC_MixSoft_1St_2i_D16C31_SAT( LVMixer3_2St_FLOAT_st *ptrInstance, |
| const LVM_FLOAT *src, |
| LVM_FLOAT *dst, |
| LVM_INT16 n) |
| { |
| char HardMixing = TRUE; |
| LVM_FLOAT TargetGain; |
| Mix_Private_FLOAT_st *pInstance1 = \ |
| (Mix_Private_FLOAT_st *)(ptrInstance->MixerStream[0].PrivateParams); |
| Mix_Private_FLOAT_st *pInstance2 = \ |
| (Mix_Private_FLOAT_st *)(ptrInstance->MixerStream[1].PrivateParams); |
| |
| if(n <= 0) return; |
| |
| /****************************************************************************** |
| SOFT MIXING |
| *******************************************************************************/ |
| if ((pInstance1->Current != pInstance1->Target) || (pInstance2->Current != pInstance2->Target)) |
| { |
| if(pInstance1->Delta == 1.0f) |
| { |
| pInstance1->Current = pInstance1->Target; |
| TargetGain = pInstance1->Target; |
| LVC_Mixer_SetTarget(&(ptrInstance->MixerStream[0]), TargetGain); |
| } |
| else if (Abs_Float(pInstance1->Current - pInstance1->Target) < pInstance1->Delta) |
| { |
| pInstance1->Current = pInstance1->Target; /* Difference is not significant anymore. \ |
| Make them equal. */ |
| TargetGain = pInstance1->Target; |
| LVC_Mixer_SetTarget(&(ptrInstance->MixerStream[0]), TargetGain); |
| } |
| else |
| { |
| /* Soft mixing has to be applied */ |
| HardMixing = FALSE; |
| } |
| |
| if(HardMixing == TRUE) |
| { |
| if(pInstance2->Delta == 1.0f) |
| { |
| pInstance2->Current = pInstance2->Target; |
| TargetGain = pInstance2->Target; |
| LVC_Mixer_SetTarget(&(ptrInstance->MixerStream[1]), TargetGain); |
| } |
| else if (Abs_Float(pInstance2->Current - pInstance2->Target) < pInstance2->Delta) |
| { |
| pInstance2->Current = pInstance2->Target; /* Difference is not significant anymore. \ |
| Make them equal. */ |
| TargetGain = pInstance2->Target; |
| LVC_Mixer_SetTarget(&(ptrInstance->MixerStream[1]), TargetGain); |
| } |
| else |
| { |
| /* Soft mixing has to be applied */ |
| HardMixing = FALSE; |
| } |
| } |
| |
| if(HardMixing == FALSE) |
| { |
| LVC_Core_MixSoft_1St_2i_D16C31_WRA( &(ptrInstance->MixerStream[0]), |
| &(ptrInstance->MixerStream[1]), |
| src, dst, n); |
| } |
| } |
| |
| /****************************************************************************** |
| HARD MIXING |
| *******************************************************************************/ |
| |
| if (HardMixing) |
| { |
| if ((pInstance1->Target == 1.0f) && (pInstance2->Target == 1.0f)) |
| { |
| if(src != dst) |
| { |
| Copy_Float(src, dst, n); |
| } |
| } |
| else |
| { |
| LVC_Core_MixHard_1St_2i_D16C31_SAT(&(ptrInstance->MixerStream[0]), |
| &(ptrInstance->MixerStream[1]), |
| src, dst, n); |
| } |
| } |
| |
| /****************************************************************************** |
| CALL BACK |
| *******************************************************************************/ |
| |
| if (ptrInstance->MixerStream[0].CallbackSet) |
| { |
| if (Abs_Float(pInstance1->Current - pInstance1->Target) < pInstance1->Delta) |
| { |
| pInstance1->Current = pInstance1->Target; /* Difference is not significant anymore. \ |
| Make them equal. */ |
| TargetGain = pInstance1->Target; |
| LVC_Mixer_SetTarget(&ptrInstance->MixerStream[0], TargetGain); |
| ptrInstance->MixerStream[0].CallbackSet = FALSE; |
| if (ptrInstance->MixerStream[0].pCallBack != 0) |
| { |
| (*ptrInstance->MixerStream[0].pCallBack) ( \ |
| ptrInstance->MixerStream[0].pCallbackHandle, |
| ptrInstance->MixerStream[0].pGeneralPurpose, |
| ptrInstance->MixerStream[0].CallbackParam ); |
| } |
| } |
| } |
| if (ptrInstance->MixerStream[1].CallbackSet) |
| { |
| if (Abs_Float(pInstance2->Current - pInstance2->Target) < pInstance2->Delta) |
| { |
| pInstance2->Current = pInstance2->Target; /* Difference is not significant anymore. |
| Make them equal. */ |
| TargetGain = pInstance2->Target; |
| LVC_Mixer_SetTarget(&ptrInstance->MixerStream[1], TargetGain); |
| ptrInstance->MixerStream[1].CallbackSet = FALSE; |
| if (ptrInstance->MixerStream[1].pCallBack != 0) |
| { |
| (*ptrInstance->MixerStream[1].pCallBack) ( |
| ptrInstance->MixerStream[1].pCallbackHandle, |
| ptrInstance->MixerStream[1].pGeneralPurpose, |
| ptrInstance->MixerStream[1].CallbackParam ); |
| } |
| } |
| } |
| } |
| /**********************************************************************************/ |
