/*++

Copyright (c) 2001 Sunplus Technology Co., Ltd.

Module Name:

        audio.h

Abstract:

        Header file related to audio functions

Environment:

        Keil C51 Compiler

Revision History:

        08/28/2001      Chi-Yeh Tsai    created                 

--*/

//------------------------------------------------------------------------------
//Constant
//------------------------------------------------------------------------------
//AC'97 CODEC register number
#define K_AC_Index_Reset                0x00
#define K_AC_Index_MasterVolume         0x02
#define K_AC_Index_MasterVolumeMono     0x06
#define K_AC_Index_PcBeepVolume         0x0A
#define K_AC_Index_PhoneVolume          0x0C
#define K_AC_Index_MicVolume            0x0E
#define K_AC_Index_LineInVolume         0x10
#define K_AC_Index_CdVolume             0x12
#define K_AC_Index_VideoVolume          0x14
#define K_AC_Index_AuxVolume            0x16
#define K_AC_Index_PcmOutVol            0x18
#define K_AC_Index_RecordSelect         0x1A
#define K_AC_Index_RecordGain           0x1C
#define K_AC_Index_GeneralPurpose       0x20
#define K_AC_Index_3dControl            0x22
#define K_AC_Index_PowerDownCtrlSts     0x26
#define K_AC_Index_SerialConfig         0x74
#define K_AC_Index_MiscCtrlBits         0x76
#define K_AC_Index_SampleRate0          0x78
#define K_AC_Index_SampleRate1          0x7A
#define K_AC_Index_VendorId1            0x7C
#define K_AC_Index_VendorId2            0x7E
//AC'97 CODEC register content        //current //default
#define K_AC_Reset                      0x0400    //0x0400
#define K_AC_MasterVolume               0x8000    //0x8000
#define K_AC_MasterVolumeMono           0x8000    //0x8000
#define K_AC_PcBeepVolume               0x8000    //0x8000
#define K_AC_PhoneVolume                0x8008    //0x8008
#define K_AC_MicVolume                  0x0040    //0x8008
#define K_AC_LineInVolume               0x8808    //0x8808
#define K_AC_CdVolume                   0x8808    //0x8808
#define K_AC_VideoVolume                0x8808    //0x8808
#define K_AC_AuxVolume                  0x8808    //0x8808
#define K_AC_PcmOutVol                  0x8808    //0x8808
#define K_AC_RecordSelect               0x0606    //0x0000
#define K_AC_RecordGain                 0x0f0f    //0x8000
#define K_AC_GeneralPurpose             0x0000    //0x0000
#define K_AC_3dControl                  0x0000    //0x0000
#define K_AC_PowerDownCtrlSts           0x0000    //0x0000
#define K_AC_SerialConfig               0x7000    //0x7000
#define K_AC_MiscCtrlBits               0x0000    //0x0000
#define K_AC_SampleRate0                0x1F40    //0xBB80
#define K_AC_SampleRate1                0xBB80    //0xBB80
#define K_AC_VendorId1                  0x4144    //0x4144
#define K_AC_VendorId2                  0x5303    //0x5303
//Sub-sampling specific
#define K_AUDIO_MaxSampleRate           0x1F40
#define K_AUDIO_SubSampleFactor         (K_AUDIO_MaxSampleRate / K_AC_SampleRate0)
//AC'97 CODEC register read/write retry count
#define K_AC_MAXRETRYCOUNT              1000000

//------------------------------------------------------------------------------
//External Link
//------------------------------------------------------------------------------
extern  xdata   ULONG   G_AUDIO_RateScale;   //@WYEO, 1008
extern  xdata   ULONG   G_AUDIO_Rate;
extern  xdata   UCHAR   G_AUDIO_Bits;
extern  xdata   UCHAR   G_AUDIO_nChannel;
extern  xdata   UCHAR   G_AUDIO_nSampleSize;

extern  code    USHORT  AudAS_SampleRate[];
extern  idata   UCHAR   G_File_AudioByteLo;
extern  idata   UCHAR   G_File_AudioByteHi;
extern  xdata   ULONG   G_File_SDRAM_AudioBufSize;
extern  data    UCHAR   G_File_SubSampleFactor;
extern  idata   UCHAR   G_File_AudioSampleCount;

//------------------------------------------------------------------------------
//Function Prototype
//------------------------------------------------------------------------------
void AUDIO_Initialize(void);
USHORT AUDIO_AcRegisterRead(UCHAR index);
void AUDIO_AcRegisterWrite(UCHAR index, USHORT value);
void File_AudioSetMode(void);   // @WYEO, 1008
void File_AudioGetSample(void); // @WYEO, 1008
BYTE File_PlayWaveStream(ULONG ramAddr, ULONG audioSize, ULONG *pAudsValue); // @WYEO, 103101
ULONG File_RecordAudioStream(ULONG ramAddr, ULONG ramSize, ULONG *pAudsValue); // @WYEO, 103101