root/src/add-ons/kernel/drivers/audio/echo/generic/CDspCommObject.h
// ****************************************************************************
//
//              CDspCommObject.H
//
//              Include file for EchoGals generic driver DSP interface base class.
//
// ----------------------------------------------------------------------------
//
// ----------------------------------------------------------------------------
//
// This file is part of Echo Digital Audio's generic driver library.
// Copyright Echo Digital Audio Corporation (c) 1998 - 2005
// All rights reserved
// www.echoaudio.com
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU Lesser General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//
// ****************************************************************************

#ifndef _DSPCOMMOBJECT_
#define _DSPCOMMOBJECT_

#ifdef _DEBUG
#ifdef ECHO_WDM
#pragma optimize("",off)
#endif
#endif

#ifdef _WIN32

//      Must match structure alignment w/DSP
#pragma pack( push, 2 )

#endif

#include "OsSupport.h"
#include "CDaffyDuck.h"

/****************************************************************************

        Lots of different defines for the different cards

 ****************************************************************************/


//==================================================================================
//
// Macros to convert to and from generic driver mixer values.  Since it can be tough
// to do floating point math in a driver, the generic driver uses fixed-point values.
// The numbers are in a 24.8 format; that is, the upper 24 bits are the integer part
// of the number and the lower 8 bits represent the fractional part.  In this scheme,
// a value of 0x180 would be equal to 1.5.
// 
// Since the DSP usually wants 8 bit integer gains, the following macros are useful.
//
//==================================================================================

#define GENERIC_TO_DSP(iValue)  ((iValue + 0x80) >> 8)  
#define DSP_TO_GENERIC(iValue)  (iValue << 8)


//==================================================================================
//
//      Max inputs and outputs
//
//==================================================================================

#define DSP_MAXAUDIOINPUTS                      16                              // Max audio input channels
#define DSP_MAXAUDIOOUTPUTS             16                              // Max audio output channels
#define DSP_MAXPIPES                                    32                              // Max total pipes (input + output)


//==================================================================================
//
//      These are the offsets for the memory-mapped DSP registers; the DSP base
// address is treated as the start of a DWORD array.
//
//==================================================================================

#define CHI32_CONTROL_REG                                       4
#define CHI32_STATUS_REG                                        5
#define CHI32_VECTOR_REG                                        6
#define CHI32_DATA_REG                                          7


//==================================================================================
//
//      Interesting bits within the DSP registers
//
//==================================================================================

#define CHI32_VECTOR_BUSY                                       0x00000001
#define CHI32_STATUS_REG_HF3                            0x00000008
#define CHI32_STATUS_REG_HF4                            0x00000010
#define CHI32_STATUS_REG_HF5                            0x00000020
#define CHI32_STATUS_HOST_READ_FULL     0x00000004
#define CHI32_STATUS_HOST_WRITE_EMPTY   0x00000002
#define         CHI32_STATUS_IRQ                              0x00000040


//==================================================================================
//
// DSP commands sent via slave mode; these are sent to the DSP by 
// CDspCommObject::Write_DSP
//
//==================================================================================

#define  DSP_FNC_SET_COMMPAGE_ADDR                              0x02
#define DSP_FNC_LOAD_LAYLA_ASIC                                 0xa0
#define DSP_FNC_LOAD_GINA24_ASIC                                0xa0
#define         DSP_FNC_LOAD_MONA_PCI_CARD_ASIC         0xa0
#define         DSP_FNC_LOAD_LAYLA24_PCI_CARD_ASIC      0xa0
#define         DSP_FNC_LOAD_MONA_EXTERNAL_ASIC         0xa1
#define         DSP_FNC_LOAD_LAYLA24_EXTERNAL_ASIC      0xa1
#define  DSP_FNC_LOAD_3G_ASIC                                           0xa0


//==================================================================================
//
// Defines to handle the MIDI input state engine; these are used to properly
// extract MIDI time code bytes and their timestamps from the MIDI input stream.
//
//==================================================================================

#define MIDI_IN_STATE_NORMAL                            0
#define MIDI_IN_STATE_TS_HIGH                   1
#define MIDI_IN_STATE_TS_LOW                            2
#define MIDI_IN_STATE_F1_DATA                   3

#define MIDI_IN_SKIP_DATA                                       ((DWORD)-1)


/*------------------------------------------------------------------------------------

Setting the sample rates on Layla24 is somewhat schizophrenic.

For standard rates, it works exactly like Mona and Gina24.  That is, for
8, 11.025, 16, 22.05, 32, 44.1, 48, 88.2, and 96 kHz, you just set the 
appropriate bits in the control register and write the control register.

In order to support MIDI time code sync (and possibly SMPTE LTC sync in 
the future), Layla24 also has "continuous sample rate mode".  In this mode, 
Layla24 can generate any sample rate between 25 and 50 kHz inclusive, or 
50 to 100 kHz inclusive for double speed mode.

To use continuous mode:

-Set the clock select bits in the control register to 0xe (see the #define 
 below)

-Set double-speed mode if you want to use sample rates above 50 kHz

-Write the control register as you would normally

-Now, you need to set the frequency register. First, you need to determine the
 value for the frequency register.  This is given by the following formula:

frequency_reg = (LAYLA24_MAGIC_NUMBER / sample_rate) - 2

Note the #define below for the magic number

-Wait for the DSP handshake
-Write the frequency_reg value to the dwSampleRate field of the comm page
-Send the vector command SET_LAYLA24_FREQUENCY_REG (see vmonkey.h)

Once you have set the control register up for continuous mode, you can just 
write the frequency register to change the sample rate.  This could be
used for MIDI time code sync. For MTC sync, the control register is set for 
continuous mode.  The driver then just keeps writing the 
SET_LAYLA24_FREQUENCY_REG command.

----------------------------------------------------------------------------------*/

#define LAYLA24_MAGIC_NUMBER                                            677376000
#define LAYLA24_CONTINUOUS_CLOCK                                0x000e


//==================================================================================
//
// DSP vector commands
//
//==================================================================================

#define DSP_VC_RESET                                                    0x80ff

#ifndef DSP_56361

//
// Vector commands for families that only use the 56301
// Only used for Darla20, Gina20, Layla20, and Darla24
//
#define DSP_VC_ACK_INT                                                  0x8073
#define DSP_VC_SET_VMIXER_GAIN                          0x0000  // Not used, only for compile
#define DSP_VC_START_TRANSFER                           0x0075  // Handshke rqd.
#define DSP_VC_METERS_ON                                                0x0079
#define DSP_VC_METERS_OFF                                               0x007b
#define DSP_VC_UPDATE_OUTVOL                                    0x007d  // Handshke rqd.
#define DSP_VC_UPDATE_INGAIN                                    0x007f  // Handshke rqd.
#define DSP_VC_ADD_AUDIO_BUFFER                         0x0081  // Handshke rqd.
#define DSP_VC_TEST_ASIC                                                0x00eb
#define DSP_VC_UPDATE_CLOCKS                                    0x00ef  // Handshke rqd.
#define         DSP_VC_SET_LAYLA_SAMPLE_RATE            0x00f1  // Handshke rqd.
#define DSP_VC_SET_GD_AUDIO_STATE                       0x00f1  // Handshke rqd.
#define DSP_VC_WRITE_CONTROL_REG                        0x00f1  // Handshke rqd.
#define         DSP_VC_MIDI_WRITE                                               0x00f5  // Handshke rqd.
#define         DSP_VC_STOP_TRANSFER                                    0x00f7  // Handshke rqd.
#define DSP_VC_UPDATE_FLAGS                                     0x00fd  // Handshke rqd.
#define         DSP_VC_GO_COMATOSE                                      0x00f9

#else

//
// Vector commands for families that use either the 56301 or 56361
//
#define DSP_VC_ACK_INT                                                  0x80F5
#define DSP_VC_SET_VMIXER_GAIN                          0x00DB  // Handshke rqd.
#define DSP_VC_START_TRANSFER                           0x00DD  // Handshke rqd.
#define DSP_VC_METERS_ON                                                0x00EF
#define DSP_VC_METERS_OFF                                               0x00F1
#define DSP_VC_UPDATE_OUTVOL                                    0x00E3  // Handshke rqd.
#define DSP_VC_UPDATE_INGAIN                                    0x00E5  // Handshke rqd.
#define DSP_VC_ADD_AUDIO_BUFFER                         0x00E1  // Handshke rqd.
#define DSP_VC_TEST_ASIC                                                0x00ED
#define DSP_VC_UPDATE_CLOCKS                                    0x00E9  // Handshke rqd.
#define DSP_VC_SET_LAYLA24_FREQUENCY_REG        0x00E9  // Handshke rqd.
#define         DSP_VC_SET_LAYLA_SAMPLE_RATE            0x00EB  // Handshke rqd.
#define DSP_VC_SET_GD_AUDIO_STATE                       0x00EB  // Handshke rqd.
#define DSP_VC_WRITE_CONTROL_REG                        0x00EB  // Handshke rqd.
#define         DSP_VC_MIDI_WRITE                                               0x00E7  // Handshke rqd.
#define         DSP_VC_STOP_TRANSFER                                    0x00DF  // Handshke rqd.
#define DSP_VC_UPDATE_FLAGS                                     0x00FB  // Handshke rqd.
#define         DSP_VC_GO_COMATOSE                                      0x00d9

#ifdef SUPERMIX
#define DSP_VC_TRIGGER                                                  0x00f3
#endif

#endif


//==================================================================================
//
//      Timeouts
//
//==================================================================================

#define HANDSHAKE_TIMEOUT               20000           //      SendVector command timeout in microseconds
#define MIDI_OUT_DELAY_USEC     2000            // How long to wait after MIDI fills up


//==================================================================================
//
//      Flags for dwFlags field in the comm page
//
//==================================================================================

#define DSP_FLAG_MIDI_INPUT                             0x0001  // Enable MIDI input
#define DSP_FLAG_SPDIF_NONAUDIO                 0x0002  // Sets the "non-audio" bit in the S/PDIF out
                                                                                                                                // status bits.  Clear this flag for audio data;
                                                                                                                                // set it for AC3 or WMA or some such
#define DSP_FLAG_PROFESSIONAL_SPDIF     0x0008  // 1 Professional, 0 Consumer

#ifdef SUPERMIX
#define DSP_FLAG_SUPERMIX_SRC                   0x0080  // Turn on sample rate conversion for supermixer
#endif



//==================================================================================
//
//      Clock detect bits reported by the DSP for Gina20, Layla20, Darla24, and Mia
//
//==================================================================================

#define GLDM_CLOCK_DETECT_BIT_WORD              0x0002
#define GLDM_CLOCK_DETECT_BIT_SUPER             0x0004
#define GLDM_CLOCK_DETECT_BIT_SPDIF             0x0008
#define GLDM_CLOCK_DETECT_BIT_ESYNC             0x0010


//==================================================================================
//
//      Clock detect bits reported by the DSP for Gina24, Mona, and Layla24
//
//==================================================================================

#define GML_CLOCK_DETECT_BIT_WORD96             0x0002
#define GML_CLOCK_DETECT_BIT_WORD48             0x0004
#define GML_CLOCK_DETECT_BIT_SPDIF48    0x0008
#define GML_CLOCK_DETECT_BIT_SPDIF96    0x0010
#define GML_CLOCK_DETECT_BIT_WORD               (GML_CLOCK_DETECT_BIT_WORD96|GML_CLOCK_DETECT_BIT_WORD48)
#define GML_CLOCK_DETECT_BIT_SPDIF              (GML_CLOCK_DETECT_BIT_SPDIF48|GML_CLOCK_DETECT_BIT_SPDIF96)
#define GML_CLOCK_DETECT_BIT_ESYNC              0x0020
#define GML_CLOCK_DETECT_BIT_ADAT               0x0040


//==================================================================================
//
//      Gina/Darla clock states
//
//==================================================================================

#define GD_CLOCK_NOCHANGE                       0
#define GD_CLOCK_44                                     1
#define GD_CLOCK_48                                     2
#define GD_CLOCK_SPDIFIN                        3
#define GD_CLOCK_UNDEF                          0xff


//==================================================================================
//
//      Gina/Darla S/PDIF status bits
//
//==================================================================================

#define GD_SPDIF_STATUS_NOCHANGE        0
#define GD_SPDIF_STATUS_44                      1
#define GD_SPDIF_STATUS_48                      2
#define GD_SPDIF_STATUS_UNDEF           0xff


//==================================================================================
//
//      Layla20 output clocks
//
//==================================================================================

#define LAYLA20_OUTPUT_CLOCK_SUPER      0
#define LAYLA20_OUTPUT_CLOCK_WORD       1


//==================================================================================
//
//      Return values from the DSP when ASIC is loaded
//
//==================================================================================

#define ASIC_LOADED                                     0x1
#define ASIC_NOT_LOADED                         0x0


//==================================================================================
//
////    DSP Audio formats
//
// These are the audio formats that the DSP can transfer
// via input and output pipes.  LE means little-endian,
// BE means big-endian.
//
// DSP_AUDIOFORM_MS_8   
//
//      8-bit mono unsigned samples.  For playback,
//              mono data is duplicated out the left and right channels
//      of the output bus.  The "MS" part of the name
//              means mono->stereo.
//
//      DSP_AUDIOFORM_MS_16LE
//
//              16-bit signed little-endian mono samples.  Playback works
//              like the previous code.
//
//      DSP_AUDIOFORM_MS_24LE
//
//              24-bit signed little-endian mono samples.  Data is packed
//    three bytes per sample; if you had two samples 0x112233 and 0x445566
//    they would be stored in memory like this: 33 22 11 66 55 44.
//
//      DSP_AUDIOFORM_MS_32LE
//      
//              24-bit signed little-endian mono samples in a 32-bit 
//              container.  In other words, each sample is a 32-bit signed 
//              integer, where the actual audio data is left-justified 
//              in the 32 bits and only the 24 most significant bits are valid.
//
//      DSP_AUDIOFORM_SS_8
//      DSP_AUDIOFORM_SS_16LE
// DSP_AUDIOFORM_SS_24LE
//      DSP_AUDIOFORM_SS_32LE
//
//              Like the previous ones, except now with stereo interleaved
//              data.  "SS" means stereo->stereo.
//
// DSP_AUDIOFORM_MM_32LE
//
//              Similar to DSP_AUDIOFORM_MS_32LE, except that the mono
//              data is not duplicated out both the left and right outputs.
//              This mode is used by the ASIO driver.  Here, "MM" means
//              mono->mono.
//
//      DSP_AUDIOFORM_MM_32BE
//
//              Just like DSP_AUDIOFORM_MM_32LE, but now the data is
//              in big-endian format.
//
//==================================================================================

#define DSP_AUDIOFORM_MS_8                      0               // 8 bit mono
#define DSP_AUDIOFORM_MS_16LE           1               // 16 bit mono
#define DSP_AUDIOFORM_MS_24LE           2               // 24 bit mono
#define DSP_AUDIOFORM_MS_32LE           3               // 32 bit mono
#define DSP_AUDIOFORM_SS_8                      4               // 8 bit stereo
#define DSP_AUDIOFORM_SS_16LE           5               // 16 bit stereo
#define DSP_AUDIOFORM_SS_24LE           6               // 24 bit stereo
#define DSP_AUDIOFORM_SS_32LE           7               // 32 bit stereo
#define DSP_AUDIOFORM_MM_32LE           8               // 32 bit mono->mono little-endian
#define DSP_AUDIOFORM_MM_32BE           9               // 32 bit mono->mono big-endian
#define DSP_AUDIOFORM_SS_32BE           10              // 32 bit stereo big endian
#define DSP_AUDIOFORM_INVALID           0xFF    // Invalid audio format


//==================================================================================
//
// Super-interleave is defined as interleaving by 4 or more.  Darla20 and Gina20
// do not support super interleave.
//
// 16 bit, 24 bit, and 32 bit little endian samples are supported for super 
// interleave.  The interleave factor must be even.  16 - way interleave is the 
// current maximum, so you can interleave by 4, 6, 8, 10, 12, 14, and 16.
//
// The actual format code is derived by taking the define below and or-ing with
// the interleave factor.  So, 32 bit interleave by 6 is 0x86 and 
// 16 bit interleave by 16 is (0x40 | 0x10) = 0x50.
//
//==================================================================================

#define DSP_AUDIOFORM_SUPER_INTERLEAVE_16LE     0x40
#define DSP_AUDIOFORM_SUPER_INTERLEAVE_24LE     0xc0
#define DSP_AUDIOFORM_SUPER_INTERLEAVE_32LE     0x80


//==================================================================================
//
//      Gina24, Mona, and Layla24 control register defines
//
//==================================================================================

#define GML_CONVERTER_ENABLE            0x0010
#define GML_SPDIF_PRO_MODE                      0x0020          // Professional S/PDIF == 1, consumer == 0
#define GML_SPDIF_SAMPLE_RATE0  0x0040
#define GML_SPDIF_SAMPLE_RATE1  0x0080
#define GML_SPDIF_TWO_CHANNEL           0x0100          // 1 == two channels, 0 == one channel
#define GML_SPDIF_NOT_AUDIO             0x0200
#define GML_SPDIF_COPY_PERMIT           0x0400
#define GML_SPDIF_24_BIT                        0x0800          // 1 == 24 bit, 0 == 20 bit
#define GML_ADAT_MODE                           0x1000          // 1 == ADAT mode, 0 == S/PDIF mode
#define GML_SPDIF_OPTICAL_MODE  0x2000          // 1 == optical mode, 0 == RCA mode
#define GML_DOUBLE_SPEED_MODE           0x4000          // 1 == double speed, 0 == single speed                 

#define GML_DIGITAL_IN_AUTO_MUTE        0x800000

#define GML_96KHZ                                               (0x0 | GML_DOUBLE_SPEED_MODE)
#define GML_88KHZ                                               (0x1 | GML_DOUBLE_SPEED_MODE)
#define GML_48KHZ                                               0x2
#define GML_44KHZ                                               0x3
#define GML_32KHZ                                               0x4
#define GML_22KHZ                                               0x5
#define GML_16KHZ                                               0x6
#define GML_11KHZ                                               0x7
#define GML_8KHZ                                                0x8
#define GML_SPDIF_CLOCK                         0x9
#define GML_ADAT_CLOCK                          0xA
#define GML_WORD_CLOCK                          0xB
#define GML_ESYNC_CLOCK                         0xC
#define GML_ESYNCx2_CLOCK                       0xD

#define GML_CLOCK_CLEAR_MASK                    0xffffbff0
#define GML_SPDIF_RATE_CLEAR_MASK   (~(GML_SPDIF_SAMPLE_RATE0|GML_SPDIF_SAMPLE_RATE1))
#define GML_DIGITAL_MODE_CLEAR_MASK     0xffffcfff
#define GML_SPDIF_FORMAT_CLEAR_MASK     0xfffff01f


//==================================================================================
//
//      Mia sample rate and clock setting constants
// 
//==================================================================================

#define MIA_32000               0x0040
#define MIA_44100               0x0042
#define MIA_48000               0x0041                                             
#define MIA_88200               0x0142
#define MIA_96000               0x0141

#define MIA_SPDIF               0x00000044
#define MIA_SPDIF96     0x00000144

#define MIA_MIDI_REV    1                               // Must be Mia rev 1 for MIDI support


//==================================================================================
//
// Gina20 & Layla20 have input gain controls for the analog inputs;
// this is the magic number for the hardware that gives you 0 dB at -10.
//
//==================================================================================

#define GL20_INPUT_GAIN_MAGIC_NUMBER    0xC8


//==================================================================================
//
//      Defines how much time must pass between DSP load attempts
//
//==================================================================================

#define DSP_LOAD_ATTEMPT_PERIOD 1000000L        // One million microseconds == one second


//==================================================================================
//
// Size of arrays for the comm page.  MAX_PLAY_TAPS and MAX_REC_TAPS are no longer 
// used, but the sizes must still be right for the DSP to see the comm page correctly.
//
//==================================================================================

#define MONITOR_ARRAY_SIZE                      0x180
#define VMIXER_ARRAY_SIZE                       0x40
#define CP_MIDI_OUT_BUFFER_SIZE 32
#define CP_MIDI_IN_BUFFER_SIZE  256
#define MAX_PLAY_TAPS                           168
#define MAX_REC_TAPS                                    192

#define DSP_MIDI_OUT_FIFO_SIZE  64


//==================================================================================
//
//      Macros for reading and writing DSP registers
//
//==================================================================================

#ifndef READ_REGISTER_ULONG
#define READ_REGISTER_ULONG(ptr)                ( *(ptr) )
#endif

#ifndef WRITE_REGISTER_ULONG
#define WRITE_REGISTER_ULONG(ptr,val)   *(ptr) = val
#endif


/****************************************************************************

        The comm page.  This structure is read and written by the DSP; the
        DSP code is a firm believer in the byte offsets written in the comments
        at the end of each line.  This structure should not be changed.
        
        Any reads from or writes to this structure should be in little-endian
        format.

 ****************************************************************************/

typedef struct
{
        DWORD                           dwCommSize;                             // size of this object                                                  0x000   4

        DWORD                           dwFlags;                                        // See Appendix A below                                                 0x004   4
        DWORD                           dwUnused;                               // Unused entry                                                                 0x008   4

        DWORD                           dwSampleRate;                   // Card sample rate in Hz                                               0x00c   4
        DWORD                           dwHandshake;                    // DSP command handshake                                                0x010   4
        CChMaskDsp              cmdStart;                               // Chs. to start mask                                                   0x014   4
        CChMaskDsp              cmdStop;                                        // Chs. to stop mask                                                            0x018   4
        CChMaskDsp              cmdReset;                               // Chs. to reset mask                                                   0x01c   4
        WORD                            wAudioFormat[ DSP_MAXPIPES ];
                                                                                // Chs. audio format                                                            0x020   16*2*2
        DUCKENTRY               DuckListPhys[ DSP_MAXPIPES ];
                                                                                                // Chs. Physical duck addrs                                     0x060   16*2*8
        DWORD                           dwPosition[ DSP_MAXPIPES ];
                                                                                                        // Positions for ea. ch.                                                0x160   16*2*4
        BYTE                            VUMeter[ DSP_MAXPIPES ];
                                                                                                        // VU meters                                                                            0x1e0   16*2*1
        BYTE                            PeakMeter[ DSP_MAXPIPES ];
                                                                                                        // Peak meters                                                                          0x200   16*2*1
        BYTE                            OutLineLevel[ DSP_MAXAUDIOOUTPUTS ];
                                                                                                        // Output gain                                                                          0x220   16*1
        BYTE                            InLineLevel[ DSP_MAXAUDIOINPUTS ];
                                                                                                        // Input gain                                                                           0x230   16*1
        BYTE                            byMonitors[ MONITOR_ARRAY_SIZE ];
                                                                                                        // Monitor map                                                                          0x240   0x180
        DWORD                           dwPlayCoeff[ MAX_PLAY_TAPS ];
                                                                                                        // Gina/Darla play filters - obsolete           0x3c0   168*4
        DWORD                           dwRecCoeff [ MAX_REC_TAPS ];
                                                                                                        // Gina/Darla record filters - obsolete 0x660   192*4
        WORD                            wMidiInData[ CP_MIDI_IN_BUFFER_SIZE ];
                                                                                                        // MIDI input data transfer buffer                      0x960   256*2
        BYTE                            byGDClockState;         // Chg Gina/Darla clock state                                   0xb60   4
        BYTE                            byGDSpdifStatus;                // Chg. Gina/Darla S/PDIF state
        BYTE                            byGDResamplerState;     // Should always be 3
        BYTE                            byFiller2;
        CChMaskDsp              cmdNominalLevel;
                                                                                                        // -10 level enable mask                                                0xb64   4
        WORD                            wInputClock;                    // Chg. Input clock state
        WORD                            wOutputClock;                   // Chg. Output clock state                                              0xb68
        DWORD                           dwStatusClocks;         // Current Input clock state                                    0xb6c   4

        DWORD                           dwExtBoxStatus;         // External box connected or not                                0xb70 4
        DWORD                           dwUnused2;                              // filler                                                                                       0xb74   4
        DWORD                           dwMidiOutFreeCount;     // # of bytes free in MIDI output FIFO          0xb78   4
        DWORD                   dwUnused3;                              //                                        0xb7c 4
        DWORD                           dwControlReg;                   // Mona, Gina24, Layla24 and 3G control         0xb80 4
        DWORD                           dw3gFreqReg;                    // 3G frequency register                                                0xb84   4
        BYTE                            byFiller[24];                   // filler                                                                                       0xb88
        BYTE                            byVmixerLevel[ VMIXER_ARRAY_SIZE ];
                                                                                                        // Vmixer levels                                                                        0xba0 64
        BYTE                            byMidiOutData[ CP_MIDI_OUT_BUFFER_SIZE ];
                                                                                                        // MIDI output data                                                             0xbe0   32
} DspCommPage, *PDspCommPage;


/****************************************************************************

        CDspCommObject is the class which wraps both the comm page and the
        DSP registers.  CDspCommObject talks directly to the hardware; anyone
        who wants to do something to the hardware goes through CDspCommObject or
        one of the derived classes.
        
        Note that an instance of CDspCommObject is never actually created; it
        is treated as an abstract base class.

 ****************************************************************************/

class CDspCommObject
{
protected:
        volatile PDspCommPage m_pDspCommPage;           // Physical memory seen by DSP
        PPAGE_BLOCK             m_pDspCommPageBlock;    // Physical memory info for COsSupport

        //
        //      These members are not seen by the DSP; they are used internally by
        // this class.
        //
        WORD                            m_wNumPipesOut;
        WORD                            m_wNumPipesIn;
        WORD                            m_wNumBussesOut;
        WORD                            m_wNumBussesIn;         
        WORD                            m_wFirstDigitalBusOut;
        WORD                            m_wFirstDigitalBusIn;
        
        BOOL                            m_fHasVmixer;
        
        WORD                            m_wNumMidiOut;                  // # MIDI out channels
        WORD                            m_wNumMidiIn;                   // # MIDI in  channels
        PWORD                   m_pwDspCode;                    // Current DSP code loaded, NULL if nothing loaded
        PWORD                   m_pwDspCodeToLoad;      // DSP code to load
        BOOL                            m_bHasASIC;                             // Set TRUE if card has an ASIC
        BOOL                            m_bASICLoaded;                  // Set TRUE when ASIC loaded
        DWORD                           m_dwCommPagePhys;               // Physical addr of this object
        volatile PDWORD m_pdwDspRegBase;                // DSP's register base
        CChannelMask    m_cmActive;                             // Chs. active mask
        BOOL                            m_bBadBoard;                    // Set TRUE if DSP won't load
                                                                                                        // or punks out
        WORD                            m_wMeterOnCount;                // How many times meters have been
                                                                                                        // enabled
        PCOsSupport             m_pOsSupport;                   // Ptr to OS specific methods & data
        CHAR                            m_szCardName[ 20 ];
        BYTE                            m_byDigitalMode;                // Digital mode (see DIGITAL_MODE_?? 
                                                                                                        //      defines in EchoGalsXface.h
        WORD                            m_wInputClock;                  // Currently selected input clock
        WORD                            m_wOutputClock;         // Currently selected output clock
        
        ULONGLONG               m_ullLastLoadAttemptTime;       // Last system time that the driver
                                                                                                                        // attempted to load the DSP & ASIC
#ifdef DIGITAL_INPUT_AUTO_MUTE_SUPPORT
        BOOL                            m_fDigitalInAutoMute;
#endif

#ifdef MIDI_SUPPORT
        WORD                            m_wMidiOnCount;         // Count MIDI enabled cmds
        ULONGLONG               m_ullMidiInTime;                // Last time MIDI in occured
        ULONGLONG               m_ullMidiOutTime;               // Last time MIDI out occured
        ULONGLONG               m_ullNextMidiWriteTime; // Next time to try MIDI output
        
        WORD                            m_wMtcState;                    // State for MIDI input parsing state machine
#endif

protected :

        virtual WORD ComputeAudioMonitorIndex
        (
                WORD    wBusOut,
                WORD    wBusIn
        )
        { 
                return( wBusOut * m_wNumBussesIn + wBusIn ); 
        }

        //
        //      Load code into DSP
        //
#ifdef DSP_56361
        virtual ECHOSTATUS InstallResidentLoader();
#endif
        virtual ECHOSTATUS LoadDSP( PWORD pCode );

        //
        //      Read the serial number from DSP
        //
        virtual ECHOSTATUS      ReadSn();

        //
        //      Load code into ASIC
        //
        virtual BOOL LoadASIC( DWORD dwCmd, PBYTE pCode, DWORD dwSize );
        virtual BOOL LoadASIC() { return TRUE; }

        //
        //      Check status of ASIC - loaded or not loaded
        //
        virtual BOOL CheckAsicStatus();

        //
        //      Write to DSP
        //
        ECHOSTATUS      Write_DSP( DWORD dwData );

        //
        //      Read from DSP
        //
        ECHOSTATUS      Read_DSP( DWORD *pdwData );

        //
        //      Get/Set handshake Flag
        //
        DWORD GetHandshakeFlag()
                { ECHO_ASSERT( NULL != m_pDspCommPage );
                  return( SWAP( m_pDspCommPage->dwHandshake ) ); }
        void ClearHandshake()
                { ECHO_ASSERT( NULL != m_pDspCommPage );
                  m_pDspCommPage->dwHandshake = 0; }

        //
        //      Get/set DSP registers
        //
        DWORD GetDspRegister( DWORD dwIndex )
        { 
                ECHO_ASSERT( NULL != m_pdwDspRegBase );
                
                return READ_REGISTER_ULONG( m_pdwDspRegBase + dwIndex); 
        }
        
        void SetDspRegister( DWORD dwIndex, DWORD dwValue )
        { 
                ECHO_ASSERT( NULL != m_pdwDspRegBase );
        
                WRITE_REGISTER_ULONG( m_pdwDspRegBase + dwIndex, dwValue);
        }

        //
        //      Set control register in CommPage
        //
        void SetControlRegister( DWORD dwControlRegister )
                { ECHO_ASSERT( NULL != m_pDspCommPage );
                  m_pDspCommPage->dwControlReg = SWAP( dwControlRegister ); }

        //
        //      Called after load firmware to restore old gains, meters on, monitors, etc.
        //
        virtual void RestoreDspSettings();

        //
        // Send a vector command to the DSP
        //
        ECHOSTATUS SendVector( DWORD dwCommand );

        //
        //      Wait for DSP to finish the last vector command
        //
        BOOL WaitForHandshake();

        //
        // Send new input line setting to DSP
        //
        ECHOSTATUS UpdateAudioInLineLevel();

public:

        //
        //      Construction/destruction
        //
        CDspCommObject( PDWORD pdwRegBase, PCOsSupport pOsSupport );
        virtual ~CDspCommObject();

        //
        //      Card information
        //
        virtual WORD GetCardType() = NULL;
                                                                                // Undefined, must be done in derived class
        const PCHAR GetCardName() { return( m_szCardName ); }
                                                                                // Must be init in derived class

        //
        // Get mask with active pipes
        //
        void GetActivePipes
        (
                PCChannelMask   pChannelMask
        );

        //
        // Basic info methods
        //
        WORD GetNumPipesOut()
        {
                return m_wNumPipesOut;
        }
        
        WORD GetNumPipesIn()
        {
                return m_wNumPipesIn;
        }
        
        WORD GetNumBussesOut()
        {
                return m_wNumBussesOut;
        }
        
        WORD GetNumBussesIn()
        {
                return m_wNumBussesIn;
        }
        
        WORD GetNumPipes()
        {
                return m_wNumPipesOut + m_wNumPipesIn;
        }
        
        WORD GetNumBusses()
        {
                return m_wNumBussesOut + m_wNumBussesIn;
        }
        
        WORD GetFirstDigitalBusOut()
        {
                return m_wFirstDigitalBusOut;
        }
        
        WORD GetFirstDigitalBusIn()
        {
                return m_wFirstDigitalBusIn;
        }
        
        BOOL HasVmixer()
        {
                return m_fHasVmixer;
        }

        WORD GetNumMidiOutChannels()
                { return( m_wNumMidiOut ); }
        WORD GetNumMidiInChannels()
                { return( m_wNumMidiIn ); }
        WORD GetNumMidiChannels()
                { return( m_wNumMidiIn + m_wNumMidiOut ); }

        //
        // Get, set, and clear comm page flags
        //
        DWORD GetFlags()
                { 
                        return( SWAP( m_pDspCommPage->dwFlags ) );  }
        DWORD SetFlags( DWORD dwFlags )
                {       
                        DWORD dwCpFlags = SWAP( m_pDspCommPage->dwFlags );
                        dwCpFlags |= dwFlags;
                        m_pDspCommPage->dwFlags = SWAP( dwCpFlags );
                
                        if ( m_bASICLoaded && WaitForHandshake() )
                                UpdateFlags();
                  return( GetFlags() );
                }
        DWORD ClearFlags( DWORD dwFlags )
                {       
                        DWORD dwCpFlags = SWAP( m_pDspCommPage->dwFlags );
                        dwCpFlags &= ~dwFlags;
                        m_pDspCommPage->dwFlags = SWAP( dwCpFlags );
                
                        if ( m_bASICLoaded && WaitForHandshake() )
                                UpdateFlags();
                        return( GetFlags() );
                }

        //
        //      Returns currently selected input clock
        //
        WORD GetInputClock()
        {
                return m_wInputClock;
        }

        //
        //      Returns what input clocks are currently detected
        //
        DWORD GetInputClockDetect()
                { return( SWAP( m_pDspCommPage->dwStatusClocks ) ); }

        //
        //      Returns currently selected output clock
        //
        WORD GetOutputClock()
        {
                return m_wOutputClock;
        }

        //
        //      Returns control register
        //
        DWORD GetControlRegister()
                { ECHO_ASSERT( NULL != m_pDspCommPage );
                  return SWAP( m_pDspCommPage->dwControlReg ); }

        //
        //      Set input and output clocks
        //
        virtual ECHOSTATUS SetInputClock(WORD wClock);
        virtual ECHOSTATUS SetOutputClock(WORD wClock);
        
        #ifdef COURT8_FAMILY
        virtual ECHOSTATUS SetPhoneBits(DWORD   dwPhoneBits)
        {
                return ECHOSTATUS_NOT_SUPPORTED;
        }
        #endif

        //
        //      Set digital mode
        //
        virtual ECHOSTATUS SetDigitalMode( BYTE byNewMode )
                { return ECHOSTATUS_DIGITAL_MODE_NOT_SUPPORTED; }

        //
        //      Get digital mode
        //
        virtual BYTE GetDigitalMode()
                { return( m_byDigitalMode ); }

        //
        //      Get mask of all supported digital modes.
        //      (See ECHOCAPS_HAS_DIGITAL_MODE_??? defines in EchoGalsXface.h)
        //
        //      Note: If the card does not have a digital mode switch
        //                      then return 0 (no digital modes supported).
        //                      Some legacy cards support S/PDIF as their only
        //                      digital mode.  We still return 0 here because it
        //                      is not switchable.
        //
        virtual DWORD GetDigitalModes()
                { return( 0 ); }

        //
        //      Return audio channel position in bytes
        //
        DWORD GetAudioPosition( WORD wPipeIndex )
                { ECHO_ASSERT( wPipeIndex < ECHO_MAXAUDIOPIPES );

                  return( ( wPipeIndex < ECHO_MAXAUDIOPIPES )
                                                        ? SWAP( m_pDspCommPage->dwPosition[ wPipeIndex ] )
                                                        : 0  );  }

        //
        // Reset the pipe position for a single pipe
        //                                                      
        void ResetPipePosition(WORD wPipeIndex)
        {
                if (wPipeIndex < ECHO_MAXAUDIOPIPES)
                {
                        m_pDspCommPage->dwPosition[ wPipeIndex ] = 0;
                }
        }

        //
        // Warning: Never write to the pointer returned by this
        // function!!!
        //
        //      The data pointed to by this pointer is in little-
        // endian format.
        //
        PDWORD GetAudioPositionPtr()
                { return( m_pDspCommPage->dwPosition ); }

        //
        // Get the current sample rate
        //
        virtual DWORD GetSampleRate()
            { return( SWAP( m_pDspCommPage->dwSampleRate ) ); }

        //
        //      Set the sample rate.
        //      Return rate that was set, 0xffffffff if error
        //
        virtual DWORD SetSampleRate( DWORD dwNewSampleRate ) = NULL;

        //
        //      Send current setting to DSP & return what it is
        //
        virtual DWORD SetSampleRate() = NULL;

        //
        // Start a group of pipes
        //
        ECHOSTATUS StartTransport
        (
                PCChannelMask   pChannelMask            // Pipes to start
        );

        //
        // Stop a group of pipes
        //
        ECHOSTATUS StopTransport
        (
                PCChannelMask   pChannelMask
        );

        //
        // Reset a group of pipes
        //
        ECHOSTATUS ResetTransport
        (
                PCChannelMask   pChannelMask
        );

#ifdef SUPERMIX 
        //
        // Trigger this card for synced transport; used for Supermix mode
        //
        ECHOSTATUS TriggerTransport();
#endif

        //
        //      See if any pipes are playing or recording
        // 
        BOOL IsTransportActive()
        {
                return (FALSE == m_cmActive.IsEmpty());
        }

        //
        // Tell DSP we added a buffer to a channel
        //
        ECHOSTATUS AddBuffer( WORD wPipeIndex );

        //
        // Add start of duck list for one channel to commpage so DSP can read it.
        //
        void SetAudioDuckListPhys( WORD wPipeIndex, DWORD dwNewPhysAdr );
        
        //
        // Read extended status register from the DSP
        //
        DWORD GetStatusReg()
        { 
                return READ_REGISTER_ULONG( m_pdwDspRegBase + CHI32_STATUS_REG ); 
        }

        //
        // Tell DSP to release the hardware interrupt
        //
        void AckInt()
        { 
                m_pDspCommPage->wMidiInData[ 0 ] = 0;
                SendVector( DSP_VC_ACK_INT ); 
        }

        //
        // Overload new & delete so memory for this object is allocated
        // from contiguous non-paged memory.
        //
        PVOID operator new( size_t Size );
        VOID  operator delete( PVOID pVoid ); 

        //
        //      Get status of board
        //
        BOOL IsBoardBad()
                { return( m_bBadBoard ); }

        //
        //      Tell DSP flags have been updated
        //
        ECHOSTATUS UpdateFlags()
        { 
                ECHO_DEBUGPRINTF(("CDspCommObject::UpdateFlags\n"));
                ClearHandshake();
                return( SendVector( DSP_VC_UPDATE_FLAGS ) ); 
        }
        
        //
        //      Get/Set professional or consumer S/PDIF status
        //
        virtual BOOL IsProfessionalSpdif()
                { 
                        ECHO_DEBUGPRINTF(("CDspCommObject::IsProfessionalSpdif - flags are 0x%lx\n",
                                                                        GetFlags()));
                        return( ( GetFlags() & DSP_FLAG_PROFESSIONAL_SPDIF ) ? TRUE : FALSE ); 
                }

        virtual void SetProfessionalSpdif( BOOL bNewStatus )
                {       
                        ECHO_DEBUGPRINTF(("CDspCommObject::SetProfessionalSpdif %d\n",bNewStatus));
                        if ( 0 != bNewStatus )
                                SetFlags( DSP_FLAG_PROFESSIONAL_SPDIF );
                        else
                                ClearFlags( DSP_FLAG_PROFESSIONAL_SPDIF );
                        
                        ECHO_DEBUGPRINTF(("CDspCommObject::SetProfessionalSpdif - flags are now 0x%lx\n",
                                                                        GetFlags()));   
                }
                
        //
        // Get/Set S/PDIF out non-audio status bit
        //
        virtual BOOL IsSpdifOutNonAudio()
        {
                        return( ( GetFlags() & DSP_FLAG_SPDIF_NONAUDIO ) ? TRUE : FALSE ); 
        }
        
        virtual void SetSpdifOutNonAudio( BOOL bNonAudio)
        {
                        if ( 0 != bNonAudio )
                                SetFlags( DSP_FLAG_SPDIF_NONAUDIO );
                        else
                                ClearFlags( DSP_FLAG_SPDIF_NONAUDIO );
        }

        //
        // Mixer functions
        //
        virtual ECHOSTATUS SetNominalLevel( WORD wBus, BOOL bState );
        virtual ECHOSTATUS GetNominalLevel( WORD wBus, PBYTE pbyState );

        ECHOSTATUS SetAudioMonitor
        (
                WORD    wOutCh,
                WORD    wInCh,
                INT32   iGain,
                BOOL    fImmediate = TRUE
        );

        //
        // SetBusOutGain - empty function on non-vmixer cards
        //
        virtual ECHOSTATUS SetBusOutGain(WORD wBusOut,INT32 iGain)
        {
                return ECHOSTATUS_OK;
        }
        
        // Send volume to DSP
        ECHOSTATUS UpdateAudioOutLineLevel();

        // Send vmixer volume to DSP
        virtual ECHOSTATUS UpdateVmixerLevel();

        virtual ECHOSTATUS SetPipeOutGain
        ( 
                WORD    wPipeOut, 
                WORD    wBusOut,
                INT32   iGain,
                BOOL    fImmediate = TRUE
        );
        
        virtual ECHOSTATUS GetPipeOutGain
        ( 
                WORD    wPipeOut, 
                WORD    wBusOut,
                INT32   &iGain
        );
        
        virtual ECHOSTATUS SetBusInGain
        ( 
                WORD    wBusIn, 
                INT32 iGain
        );

        virtual ECHOSTATUS GetBusInGain( WORD wBusIn, INT32 &iGain);
        
        //
        //      See description of ECHOGALS_METERS above for
        //      data format information.
        //
        virtual ECHOSTATUS GetAudioMeters
        (
                PECHOGALS_METERS        pMeters
        );

        ECHOSTATUS GetMetersOn
        (
                BOOL & bOn
        )
        {       bOn = ( 0 != m_wMeterOnCount ); return ECHOSTATUS_OK; }

        ECHOSTATUS SetMetersOn( BOOL bOn );

        //
        //      Set/get Audio Format
        //
        ECHOSTATUS SetAudioFormat
        (
                WORD                                                    wPipeIndex,
                PECHOGALS_AUDIOFORMAT   pFormat
        );

        ECHOSTATUS GetAudioFormat
        ( 
                WORD                                                    wPipeIndex,
                PECHOGALS_AUDIOFORMAT   pFormat
        );

#ifdef MIDI_SUPPORT

        //
        //      MIDI output activity
        //
        virtual BOOL IsMidiOutActive();
                
        //
        // Set MIDI I/O on or off
        //
        ECHOSTATUS SetMidiOn( BOOL bOn );
        
        //
        // Read and write MIDI data
        //      
        ECHOSTATUS WriteMidi
        (
                PBYTE           pData,
                DWORD           dwLength,
                PDWORD  pdwActualCt
        );
        
        ECHOSTATUS ReadMidi
        (
                WORD            wIndex,                         // Buffer index
                DWORD & dwData                          // Return data
        );
        
#endif // MIDI_SUPPORT

        //
        //      Reset the DSP and load new firmware.
        //
        virtual ECHOSTATUS LoadFirmware();
        
        //
        // Put the hardware to sleep
        //
        virtual ECHOSTATUS GoComatose();
        

#ifdef DIGITAL_INPUT_AUTO_MUTE_SUPPORT
        //
        // Get and set the digital input auto-mute flag
        //
        virtual ECHOSTATUS GetDigitalInputAutoMute(BOOL &fAutoMute);
        virtual ECHOSTATUS SetDigitalInputAutoMute(BOOL fAutoMute);
        
#endif // DIGITAL_INPUT_AUTO_MUTE_SUPPORT
        
#ifdef SUPERMIX
        //
        // Set the input gain boost
        //
        virtual ECHOSTATUS SetInputGainBoost(WORD wBusIn,BYTE bBoostDb)
        { return ECHOSTATUS_NOT_SUPPORTED; }
#endif  
        
};              // class CDspCommObject

typedef CDspCommObject * PCDspCommObject;

#ifdef _WIN32
#pragma pack( pop )
#endif

#endif

// **** DspCommObject.h ****