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Diffstat (limited to 'media/libeffects/lvm/lib/Bass/src/LVDBE_Control.c')
-rwxr-xr-xmedia/libeffects/lvm/lib/Bass/src/LVDBE_Control.c377
1 files changed, 377 insertions, 0 deletions
diff --git a/media/libeffects/lvm/lib/Bass/src/LVDBE_Control.c b/media/libeffects/lvm/lib/Bass/src/LVDBE_Control.c
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index 0000000..e66513f
--- /dev/null
+++ b/media/libeffects/lvm/lib/Bass/src/LVDBE_Control.c
@@ -0,0 +1,377 @@
+/*
+ * 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: 1223 $
+ $Date: 2010-07-15 14:27:01 +0200 (Thu, 15 Jul 2010) $
+
+*****************************************************************************************/
+
+/****************************************************************************************/
+/* */
+/* Includes */
+/* */
+/****************************************************************************************/
+
+#include "LVDBE.h"
+#include "LVDBE_Private.h"
+#include "VectorArithmetic.h"
+#include "LVDBE_Coeffs.h"
+#include "LVDBE_Tables.h"
+
+/****************************************************************************************/
+/* */
+/* FUNCTION: LVDBE_GetParameters */
+/* */
+/* DESCRIPTION: */
+/* Request the Dynamic Bass Enhancement parameters. The current parameter set is */
+/* returned via the parameter pointer. */
+/* */
+/* PARAMETERS: */
+/* hInstance Instance handle */
+/* pParams Pointer to an empty parameter structure */
+/* */
+/* RETURNS: */
+/* LVDBE_SUCCESS Always succeeds */
+/* */
+/* NOTES: */
+/* 1. This function may be interrupted by the LVDBE_Process function */
+/* */
+/****************************************************************************************/
+
+LVDBE_ReturnStatus_en LVDBE_GetParameters(LVDBE_Handle_t hInstance,
+ LVDBE_Params_t *pParams)
+{
+
+ LVDBE_Instance_t *pInstance =(LVDBE_Instance_t *)hInstance;
+
+ *pParams = pInstance->Params;
+
+ return(LVDBE_SUCCESS);
+}
+
+
+/************************************************************************************/
+/* */
+/* FUNCTION: LVDBE_GetCapabilities */
+/* */
+/* DESCRIPTION: Dynamic Bass Enhnacement capabilities. The current capabilities are */
+/* returned via the pointer. */
+/* */
+/* PARAMETERS: */
+/* hInstance Instance handle */
+/* pCapabilities Pointer to an empty capability structure */
+/* */
+/* RETURNS: */
+/* LVDBE_Success Always succeeds */
+/* */
+/* NOTES: */
+/* 1. This function may be interrupted by the LVDBE_Process function */
+/* */
+/************************************************************************************/
+
+LVDBE_ReturnStatus_en LVDBE_GetCapabilities(LVDBE_Handle_t hInstance,
+ LVDBE_Capabilities_t *pCapabilities)
+{
+
+ LVDBE_Instance_t *pInstance =(LVDBE_Instance_t *)hInstance;
+
+ *pCapabilities = pInstance->Capabilities;
+
+ return(LVDBE_SUCCESS);
+}
+
+
+/************************************************************************************/
+/* */
+/* FUNCTION: LVDBE_SetFilters */
+/* */
+/* DESCRIPTION: */
+/* Sets the filter coefficients and clears the data history */
+/* */
+/* PARAMETERS: */
+/* pInstance Pointer to the instance */
+/* pParams Initialisation parameters */
+/* */
+/************************************************************************************/
+
+void LVDBE_SetFilters(LVDBE_Instance_t *pInstance,
+ LVDBE_Params_t *pParams)
+{
+
+ /*
+ * Calculate the table offsets
+ */
+ LVM_UINT16 Offset = (LVM_UINT16)((LVM_UINT16)pParams->SampleRate + (LVM_UINT16)(pParams->CentreFrequency * (1+LVDBE_FS_48000)));
+
+
+ /*
+ * Setup the high pass filter
+ */
+ LoadConst_16(0, /* Clear the history, value 0 */
+ (LVM_INT16 *)&pInstance->pData->HPFTaps, /* Destination */
+ sizeof(pInstance->pData->HPFTaps)/sizeof(LVM_INT16)); /* Number of words */
+ BQ_2I_D32F32Cll_TRC_WRA_01_Init(&pInstance->pCoef->HPFInstance, /* Initialise the filter */
+ &pInstance->pData->HPFTaps,
+ (BQ_C32_Coefs_t *)&LVDBE_HPF_Table[Offset]);
+
+
+ /*
+ * Setup the band pass filter
+ */
+ LoadConst_16(0, /* Clear the history, value 0 */
+ (LVM_INT16 *)&pInstance->pData->BPFTaps, /* Destination */
+ sizeof(pInstance->pData->BPFTaps)/sizeof(LVM_INT16)); /* Number of words */
+ BP_1I_D32F32Cll_TRC_WRA_02_Init(&pInstance->pCoef->BPFInstance, /* Initialise the filter */
+ &pInstance->pData->BPFTaps,
+ (BP_C32_Coefs_t *)&LVDBE_BPF_Table[Offset]);
+
+}
+
+
+
+/************************************************************************************/
+/* */
+/* FUNCTION: LVDBE_SetAGC */
+/* */
+/* DESCRIPTION: */
+/* Sets the AGC gain level and attack and decay times constants. */
+/* */
+/* PARAMETERS: */
+/* pInstance Pointer to the instance */
+/* pParams Initialisation parameters */
+/* */
+/************************************************************************************/
+
+void LVDBE_SetAGC(LVDBE_Instance_t *pInstance,
+ LVDBE_Params_t *pParams)
+{
+
+ /*
+ * Get the attack and decay time constants
+ */
+ pInstance->pData->AGCInstance.AGC_Attack = LVDBE_AGC_ATTACK_Table[(LVM_UINT16)pParams->SampleRate]; /* Attack multiplier */
+ pInstance->pData->AGCInstance.AGC_Decay = LVDBE_AGC_DECAY_Table[(LVM_UINT16)pParams->SampleRate]; /* Decay multipler */
+
+
+ /*
+ * Get the boost gain
+ */
+ if (pParams->HPFSelect == LVDBE_HPF_ON)
+ {
+ pInstance->pData->AGCInstance.AGC_MaxGain = LVDBE_AGC_HPFGAIN_Table[(LVM_UINT16)pParams->EffectLevel]; /* High pass filter on */
+ }
+ else
+ {
+ pInstance->pData->AGCInstance.AGC_MaxGain = LVDBE_AGC_GAIN_Table[(LVM_UINT16)pParams->EffectLevel]; /* High pass filter off */
+ }
+ pInstance->pData->AGCInstance.AGC_GainShift = AGC_GAIN_SHIFT;
+ pInstance->pData->AGCInstance.AGC_Target = AGC_TARGETLEVEL;
+
+}
+
+
+/************************************************************************************/
+/* */
+/* FUNCTION: LVDBE_SetVolume */
+/* */
+/* DESCRIPTION: */
+/* Converts the input volume demand from dBs to linear. */
+/* */
+/* PARAMETERS: */
+/* pInstance Pointer to the instance */
+/* pParams Initialisation parameters */
+/* */
+/* NOTES: */
+/* 1. The volume should have the following settings: */
+/* */
+/* DBE Vol Control Volume setting */
+/* === =========== =================== */
+/* Off Off HeadroomdB */
+/* Off On VolumedB+HeadroomdB */
+/* On Off HeadroomdB */
+/* On On VolumedB+HeadroomdB */
+/* */
+/************************************************************************************/
+
+void LVDBE_SetVolume(LVDBE_Instance_t *pInstance,
+ LVDBE_Params_t *pParams)
+{
+
+ LVM_UINT16 dBShifts; /* 6dB shifts */
+ LVM_UINT16 dBOffset; /* Table offset */
+ LVM_INT16 Volume = 0; /* Required volume in dBs */
+
+ /*
+ * Apply the volume if enabled
+ */
+ if (pParams->VolumeControl == LVDBE_VOLUME_ON)
+ {
+ /*
+ * Limit the gain to the maximum allowed
+ */
+ if (pParams->VolumedB > VOLUME_MAX)
+ {
+ Volume = VOLUME_MAX;
+ }
+ else
+ {
+ Volume = pParams->VolumedB;
+ }
+ }
+
+
+ /*
+ * Calculate the required gain and shifts
+ */
+ dBOffset = (LVM_UINT16)(6 + Volume % 6); /* Get the dBs 0-5 */
+ dBShifts = (LVM_UINT16)(Volume / -6); /* Get the 6dB shifts */
+
+
+ /*
+ * When DBE is enabled use AGC volume
+ */
+ pInstance->pData->AGCInstance.Target = ((LVM_INT32)LVDBE_VolumeTable[dBOffset] << 16);
+ pInstance->pData->AGCInstance.Target = pInstance->pData->AGCInstance.Target >> dBShifts;
+
+ pInstance->pData->AGCInstance.VolumeTC = LVDBE_VolumeTCTable[(LVM_UINT16)pParams->SampleRate]; /* Volume update time constant */
+ pInstance->pData->AGCInstance.VolumeShift = VOLUME_SHIFT+1;
+
+ /*
+ * When DBE is disabled use the bypass volume control
+ */
+ if(dBShifts > 0)
+ {
+ LVC_Mixer_SetTarget(&pInstance->pData->BypassVolume.MixerStream[0],(((LVM_INT32)LVDBE_VolumeTable[dBOffset]) >> dBShifts));
+ }
+ else
+ {
+ LVC_Mixer_SetTarget(&pInstance->pData->BypassVolume.MixerStream[0],(LVM_INT32)LVDBE_VolumeTable[dBOffset]);
+ }
+
+ pInstance->pData->BypassVolume.MixerStream[0].CallbackSet = 1;
+ LVC_Mixer_VarSlope_SetTimeConstant(&pInstance->pData->BypassVolume.MixerStream[0],
+ LVDBE_MIXER_TC,
+ (LVM_Fs_en)pInstance->Params.SampleRate,
+ 2);
+}
+
+
+/****************************************************************************************/
+/* */
+/* FUNCTION: LVDBE_Control */
+/* */
+/* DESCRIPTION: */
+/* Sets or changes the Bass Enhancement parameters. Changing the parameters while the */
+/* module is processing signals may have the following side effects: */
+/* */
+/* General parameters: */
+/* =================== */
+/* OperatingMode: Changing the mode of operation may cause a change in volume */
+/* level or cause pops and clicks. */
+/* */
+/* SampleRate: Changing the sample rate may cause pops and clicks. */
+/* */
+/* EffectLevel: Changing the effect level may cause pops and clicks */
+/* */
+/* CentreFrequency: Changing the centre frequency may cause pops and clicks */
+/* */
+/* HPFSelect: Selecting/de-selecting the high pass filter may cause pops and */
+/* clicks */
+/* */
+/* VolumedB Changing the volume setting will have no side effects */
+/* */
+/* */
+/* PARAMETERS: */
+/* hInstance Instance handle */
+/* pParams Pointer to a parameter structure */
+/* */
+/* RETURNS: */
+/* LVDBE_SUCCESS Always succeeds */
+/* */
+/* NOTES: */
+/* 1. This function must not be interrupted by the LVDBE_Process function */
+/* */
+/****************************************************************************************/
+
+LVDBE_ReturnStatus_en LVDBE_Control(LVDBE_Handle_t hInstance,
+ LVDBE_Params_t *pParams)
+{
+
+ LVDBE_Instance_t *pInstance =(LVDBE_Instance_t *)hInstance;
+
+
+ /*
+ * Update the filters
+ */
+ if ((pInstance->Params.SampleRate != pParams->SampleRate) ||
+ (pInstance->Params.CentreFrequency != pParams->CentreFrequency))
+ {
+ LVDBE_SetFilters(pInstance, /* Instance pointer */
+ pParams); /* New parameters */
+ }
+
+
+ /*
+ * Update the AGC is the effect level has changed
+ */
+ if ((pInstance->Params.SampleRate != pParams->SampleRate) ||
+ (pInstance->Params.EffectLevel != pParams->EffectLevel) ||
+ (pInstance->Params.HPFSelect != pParams->HPFSelect))
+ {
+ LVDBE_SetAGC(pInstance, /* Instance pointer */
+ pParams); /* New parameters */
+ }
+
+
+ /*
+ * Update the Volume if the volume demand has changed
+ */
+ if ((pInstance->Params.VolumedB != pParams->VolumedB) ||
+ (pInstance->Params.SampleRate != pParams->SampleRate) ||
+ (pInstance->Params.HeadroomdB != pParams->HeadroomdB) ||
+ (pInstance->Params.VolumeControl != pParams->VolumeControl))
+ {
+ LVDBE_SetVolume(pInstance, /* Instance pointer */
+ pParams); /* New parameters */
+ }
+
+ if (pInstance->Params.OperatingMode==LVDBE_ON && pParams->OperatingMode==LVDBE_OFF)
+ {
+ LVDBE_Params_t Params = *pParams; /* make local copy of params */
+ Params.EffectLevel = 0; /* zero effect level before switching off module*/
+ pInstance->bTransitionOnToOff = LVM_TRUE; /* Set the CallBack */
+ LVDBE_SetAGC(pInstance, /* Instance pointer */
+ &Params); /* New parameters */
+ }
+ if (pInstance->Params.OperatingMode==LVDBE_OFF && pParams->OperatingMode==LVDBE_ON)
+ {
+ pInstance->bTransitionOnToOff = LVM_FALSE; /* Set the CallBack */
+ LVDBE_SetAGC(pInstance, /* Instance pointer */
+ pParams); /* New parameters */
+ }
+
+ /*
+ * Update the instance parameters
+ */
+ pInstance->Params = *pParams;
+
+
+ return(LVDBE_SUCCESS);
+}
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