// ****************************************************************************
//
//              CIndigoIO.cpp
//
//              Implementation file for the CIndigoIO 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 "CIndigoIO.h"
#include "CIndigoDJ.h"

#define INDIGO_IO_OUTPUT_LATENCY_SINGLE_SPEED   44
#define INDIGO_IO_OUTPUT_LATENCY_DOUBLE_SPEED   37
#define INDIGO_IO_INPUT_LATENCY_SINGLE_SPEED            44
#define INDIGO_IO_INPUT_LATENCY_DOUBLE_SPEED            41


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

        Construction and destruction

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

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

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

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

        return pMemory;

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


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



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

CIndigoIO::CIndigoIO( PCOsSupport pOsSupport )
          : CEchoGalsVmixer( pOsSupport )
{
        ECHO_DEBUGPRINTF( ( "CIndigoIO::CIndigoIO() is born!\n" ) );
}

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




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

        Setup and hardware initialization

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

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

ECHOSTATUS CIndigoIO::InitHw()
{
        ECHOSTATUS      Status;

        //
        // 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 CIndigoIODspCommObject( (PDWORD) m_pvSharedMemory,
                                                                                                                         m_pOsSupport );
        if (NULL == m_pDspCommObject)
        {
                ECHO_DEBUGPRINTF(("CIndigoIO::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( ( "CIndigoIO::InitHw() complete\n" ) );
        return Status;

}       // ECHOSTATUS CIndigoIO::InitHw()




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

        Informational methods

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

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

ECHOSTATUS CIndigoIO::GetCapabilities
(
        PECHOGALS_CAPS  pCapabilities
)
{
        ECHOSTATUS Status;

        Status = GetBaseCapabilities(pCapabilities);
        if ( ECHOSTATUS_OK != Status )
                return Status;
                
        pCapabilities->dwOutClockTypes = 0;

        return Status;

}       // ECHOSTATUS CIndigoIO::GetCapabilities


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

ECHOSTATUS CIndigoIO::QueryAudioSampleRate
(
        DWORD           dwSampleRate
)
{
        if ( dwSampleRate != 32000 &&
                  dwSampleRate != 44100 &&
                  dwSampleRate != 48000 &&
                  dwSampleRate != 64000 &&
                  dwSampleRate != 88200 &&
                  dwSampleRate != 96000
                )
        {
                ECHO_DEBUGPRINTF(
                        ("CIndigoIO::QueryAudioSampleRate() - rate %ld invalid\n",dwSampleRate) );
                return ECHOSTATUS_BAD_FORMAT;
        }

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

}       // ECHOSTATUS CIndigoIO::QueryAudioSampleRate


void CIndigoIO::QuerySampleRateRange(DWORD &dwMinRate,DWORD &dwMaxRate)
{
        dwMinRate = 32000;
        dwMaxRate = 96000;
}


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

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

        //
        // The latency depends on the current sample rate
        //
        dwSampleRate = GetDspCommObject()->GetSampleRate();
        if (FALSE == pLatency->wIsInput)
        {
                if (dwSampleRate < 50000)
                        dwLatency = INDIGO_IO_OUTPUT_LATENCY_SINGLE_SPEED;
                else
                        dwLatency = INDIGO_IO_OUTPUT_LATENCY_DOUBLE_SPEED;      
        }
        else
        {
                if (dwSampleRate < 50000)
                        dwLatency = INDIGO_IO_INPUT_LATENCY_SINGLE_SPEED;
                else
                        dwLatency = INDIGO_IO_INPUT_LATENCY_DOUBLE_SPEED;
        }
        
        pLatency->dwLatency = dwLatency;
        
}       // GetAudioLatency

// *** CIndigoIO.cpp ***