// ****************************************************************************
//
//              CIndigoDJ.cpp
//
//              Implementation file for the CIndigoDJ 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 "CIndigoDJ.h"

#define INDIGO_DJ_OUTPUT_LATENCY_SINGLE_SPEED   44
#define INDIGO_DJ_OUTPUT_LATENCY_DOUBLE_SPEED   37


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

        Construction and destruction

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

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

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

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

        return pMemory;

}       // PVOID CIndigoDJ::operator new( size_t Size )


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



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

CIndigoDJ::CIndigoDJ( PCOsSupport pOsSupport )
          : CIndigo( pOsSupport )
{
        ECHO_DEBUGPRINTF( ( "CIndigoDJ::CIndigoDJ() is born!\n" ) );
}

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



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

ECHOSTATUS CIndigoDJ::InitHw()
{
        ECHOSTATUS      Status;

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

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

        //
        // Load the DSP
        //
        GetDspCommObject()->LoadFirmware();
        if ( GetDspCommObject()->IsBoardBad() )
                return ECHOSTATUS_DSP_DEAD;
        
        //
        // Do flags
        //
        m_wFlags &= ~ECHOGALS_FLAG_BADBOARD;
        m_wFlags |= ECHOGALS_ROFLAG_SUPER_INTERLEAVE_OK;

        //
        //      Must call this here after DSP is init to 
        //      init gains and mutes
        //
        Status = InitLineLevels();
        if ( ECHOSTATUS_OK != Status )
                return Status;

        //
        //      Get default sample rate from DSP
        //
        m_dwSampleRate = GetDspCommObject()->GetSampleRate();

        ECHO_DEBUGPRINTF( ( "CIndigo::InitHw()\n" ) );
        return Status;

}       // ECHOSTATUS CIndigo::InitHw()


//===========================================================================
//
// GetAudioLatency - returns the latency for a single pipe
//
//===========================================================================

void CIndigoDJ::GetAudioLatency(ECHO_AUDIO_LATENCY *pLatency)
{
        DWORD dwLatency;
        DWORD dwSampleRate;

        dwSampleRate = GetDspCommObject()->GetSampleRate();
        if (FALSE == pLatency->wIsInput)
        {
                //
                // The latency depends on the current sample rate
                //
                if (dwSampleRate < 50000)
                        dwLatency = INDIGO_DJ_OUTPUT_LATENCY_SINGLE_SPEED;
                else
                        dwLatency = INDIGO_DJ_OUTPUT_LATENCY_DOUBLE_SPEED;
        }
        else
        {
                //
                // Inputs?  What inputs?
                //
                dwLatency = 0;
        }
        
        pLatency->dwLatency = dwLatency;

}       // GetAudioLatency


// *** CIndigoDJ.cpp ***