// ****************************************************************************
//
//              CDarla24.cpp
//
//              Implementation file for the CDarla24 driver class.
//              Set editor tabs to 3 for your viewing pleasure.
//
// ----------------------------------------------------------------------------
//
// 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
//
// ****************************************************************************

#include "CDarla24.h"

#define DARLA24_ANALOG_OUTPUT_LATENCY   59
#define DARLA24_ANALOG_INPUT_LATENCY    71


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

        Construction and destruction

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

//===========================================================================
//
// Overload new & delete so memory for this object is allocated
//      from non-paged memory.
//
//===========================================================================

PVOID CDarla24::operator new( size_t Size )
{
        PVOID           pMemory;
        ECHOSTATUS      Status;
        
        Status = OsAllocateNonPaged(Size,&pMemory);
        
        if ( (ECHOSTATUS_OK != Status) || (NULL == pMemory ))
        {
                ECHO_DEBUGPRINTF(("CDarla24::operator new - memory allocation failed\n"));

                pMemory = NULL;
        }
        else
        {
                memset( pMemory, 0, Size );
        }

        return pMemory;
        
}       // PVOID CDarla24::operator new( size_t Size )


VOID  CDarla24::operator delete( PVOID pVoid )
{
        if ( ECHOSTATUS_OK != OsFreeNonPaged( pVoid ) )
        {
                ECHO_DEBUGPRINTF(("CDarla24::operator delete memory free failed\n"));
        }
}       // VOID CDarla24::operator delete( PVOID pVoid )


//===========================================================================
//
// Constructor and destructor
//
//===========================================================================

CDarla24::CDarla24( PCOsSupport pOsSupport )
                        : CEchoGals( pOsSupport )
{
        ECHO_DEBUGPRINTF( ( "CDarla24::CDarla24() is born!\n" ) );
        
        m_wAnalogOutputLatency = DARLA24_ANALOG_OUTPUT_LATENCY;
        m_wAnalogInputLatency = DARLA24_ANALOG_INPUT_LATENCY;
        
}

CDarla24::~CDarla24()
{
        ECHO_DEBUGPRINTF( ( "CDarla24::~CDarla24() is toast!\n" ) );
}




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

        Setup and hardware initialization

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

//===========================================================================
//
// Every card has an InitHw method
//
//===========================================================================

ECHOSTATUS CDarla24::InitHw()
{
        ECHOSTATUS      Status;
        WORD                    i;

        //
        // Call the base method
        //
        if ( ECHOSTATUS_OK != ( Status = CEchoGals::InitHw() ) )
                return Status;

        //
        // Create the DSP comm object
        //
        ECHO_ASSERT(NULL == m_pDspCommObject );
        m_pDspCommObject = new CDarla24DspCommObject( (PDWORD) m_pvSharedMemory,
                                                                                                                                 m_pOsSupport );
        if (NULL == m_pDspCommObject)
        {
                ECHO_DEBUGPRINTF(("CDarla24::InitHw - could not create DSP comm object\n"));
                return ECHOSTATUS_NO_MEM;
        }

        //
        //      Load the DSP
        // 
        GetDspCommObject()->LoadFirmware();
        if ( GetDspCommObject()->IsBoardBad() )
                return ECHOSTATUS_DSP_DEAD;
        
        //
        // Clear the "bad board" flag; set the flag to indicate that
        // Darla24 can handle super-interleave.
        //
        m_wFlags &= ~ECHOGALS_FLAG_BADBOARD;
        m_wFlags |= ECHOGALS_ROFLAG_SUPER_INTERLEAVE_OK;
        
        //
        //      Must call this here after DSP is init to 
        //      init gains
        //
        Status = InitLineLevels();
        if ( ECHOSTATUS_OK != Status )
                return Status;
        
        //
        // Set defaults for +4/-10
        //
        for (i = 0; i < GetNumBusses(); i++ )
        {
                GetDspCommObject()->SetNominalLevel( i, FALSE );        // FALSE is +4 here
        }

        //
        //      Get default sample rate from DSP
        //
        m_dwSampleRate = GetDspCommObject()->GetSampleRate();
        ECHO_DEBUGPRINTF( ( "CDarla24::InitHw()\n" ) );
        
        return Status;
        
}       // ECHOSTATUS CDarla24::InitHw()




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

        Informational methods

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

//===========================================================================
//
// Override GetCapabilities to enumerate unique capabilties for this card
//
//===========================================================================

ECHOSTATUS CDarla24::GetCapabilities
(
        PECHOGALS_CAPS  pCapabilities
)
{
        ECHOSTATUS      Status;
        WORD                    i;
        
        Status = GetBaseCapabilities(pCapabilities);
                                                  
        //
        // Add nominal level control to in & out busses
        //
        for (i = 0 ; i < GetNumBussesOut(); i++)
        {
                pCapabilities->dwBusOutCaps[i] |= ECHOCAPS_NOMINAL_LEVEL;
        }

        for (i = 0 ; i < GetNumBussesIn(); i++)
        {
                pCapabilities->dwBusInCaps[i] |= ECHOCAPS_NOMINAL_LEVEL;
        }
                                                                                                                        
        if ( ECHOSTATUS_OK != Status )
                return Status;

        pCapabilities->dwInClockTypes |= ECHO_CLOCK_BIT_ESYNC;

        return Status;
        
}       // ECHOSTATUS CDarla24::GetCapabilities


//===========================================================================
//
// GetInputClockDetect returns a bitmask consisting of all the input
// clocks currently connected to the hardware; this changes as the user
// connects and disconnects clock inputs.  
//
// You should use this information to determine which clocks the user is
// allowed to select.
//
// Darla24 only supports Esync input clock.
//
//===========================================================================

ECHOSTATUS CDarla24::GetInputClockDetect(DWORD &dwClockDetectBits)
{
        if ( NULL == GetDspCommObject() || GetDspCommObject()->IsBoardBad() )
        {
                ECHO_DEBUGPRINTF( ("CDarla24::GetInputClockDetect: DSP Dead!\n") );
                return ECHOSTATUS_DSP_DEAD;
        }
                                         
        DWORD dwClocksFromDsp = GetDspCommObject()->GetInputClockDetect();
        
        dwClockDetectBits = ECHO_CLOCK_BIT_INTERNAL;
        
        if (0 != (dwClocksFromDsp & GLDM_CLOCK_DETECT_BIT_ESYNC))
                dwClockDetectBits |= ECHO_CLOCK_BIT_ESYNC;
        
        return ECHOSTATUS_OK;
        
}       // GetInputClockDetect


//===========================================================================
//
// QueryAudioSampleRate is used to find out if this card can handle a 
// given sample rate.
//
//===========================================================================

ECHOSTATUS CDarla24::QueryAudioSampleRate
(
        DWORD           dwSampleRate
)
{
        if ( dwSampleRate != 8000 &&
                  dwSampleRate != 11025 &&
                  dwSampleRate != 16000 &&
                  dwSampleRate != 22050 &&
                  dwSampleRate != 32000 &&
                  dwSampleRate != 44100 &&
                  dwSampleRate != 48000 &&
                  dwSampleRate != 88200 &&
                  dwSampleRate != 96000 )
        {
                ECHO_DEBUGPRINTF(
                        ("CDarla24::QueryAudioSampleRate() - rate %ld invalid\n",
                        dwSampleRate) );
                return ECHOSTATUS_BAD_FORMAT;
        }

        ECHO_DEBUGPRINTF( ( "CDarla24::QueryAudioSampleRate()\n" ) );
        return ECHOSTATUS_OK;

}       // ECHOSTATUS CDarla24::QueryAudioSampleRate

void CDarla24::QuerySampleRateRange(DWORD &dwMinRate,DWORD &dwMaxRate)
{
        dwMinRate = 8000;
        dwMaxRate = 96000;
}



// *** CDarla24.cpp ***