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git-svn-id: file:///srv/svn/repos/haiku/trunk/current@5937 a95241bf-73f2-0310-859d-f6bbb57e9c96
This commit is contained in:
Jérôme Duval 2004-01-06 14:18:22 +00:00
parent 397b021d61
commit cd9ccc0712
2 changed files with 0 additions and 265 deletions
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162
src/add-ons/kernel/drivers/audio/echo/generic/CMidiQueue.cpp
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@ -1,162 +0,0 @@
// ****************************************************************************
//
// CMidiQueue.cpp
//
// Implementation file for the CMidiQueue class.
// Use a simple fixed size queue for managing MIDI data.
// Fill & drain pointers are maintained automatically whenever
// an Add or Get function succeeds.
//
// Set editor tabs to 3 for your viewing pleasure.
//
// Copyright Echo Digital Audio Corporation (c) 1998 - 2002
// All rights reserved
// www.echoaudio.com
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal with the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// - Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimers.
//
// - Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimers in the
// documentation and/or other materials provided with the distribution.
//
// - Neither the name of Echo Digital Audio, nor the names of its
// contributors may be used to endorse or promote products derived from
// this Software without specific prior written permission.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
// IN NO EVENT SHALL THE CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR
// ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
// SOFTWARE OR THE USE OR OTHER DEALINGS WITH THE SOFTWARE.
//
// ****************************************************************************
#include "CEchoGals.h"
#include "CMidiQueue.h"
/****************************************************************************
Construction and destruction
****************************************************************************/
CMidiQueue::CMidiQueue()
{
Reset();
} // CMidiQueue::CMidiQueue()
CMidiQueue::~CMidiQueue()
{
} // CMidiQueue::~CMidiQueue()
/****************************************************************************
Add and retrieve data
****************************************************************************/
//===========================================================================
//
// Get the oldest byte out of the buffer
//
//===========================================================================
ECHOSTATUS CMidiQueue::GetMidi
(
MIDI_DATA &Midi
)
{
if ( m_pFill == m_pDrain )
return( ECHOSTATUS_NO_DATA );
Midi = *m_pDrain;
ECHO_DEBUGPRINTF( ("CMidiQueue::GetMidi 0x%x", Midi) );
m_pDrain = ComputeNext( m_pDrain );
return ECHOSTATUS_OK;
} // ECHOSTATUS CMidiQueue::GetMidi
//===========================================================================
//
// Put a new byte into the buffer
//
//===========================================================================
ECHOSTATUS CMidiQueue::AddMidi
(
MIDI_DATA Midi
)
{
if ( ComputeNext( m_pFill ) == m_pDrain )
{
ECHO_DEBUGPRINTF( ("CMidiQueue::AddMidi buffer overflow\n") );
ECHO_DEBUGBREAK();
return( ECHOSTATUS_BUFFER_OVERFLOW );
}
ECHO_DEBUGPRINTF( ("CMidiQueue::AddMidi 0x%x\n", Midi) );
*m_pFill = Midi;
m_pFill = ComputeNext( m_pFill );
return ECHOSTATUS_OK;
} // ECHOSTATUS CMidiQueue::AddMidi
//===========================================================================
//
// Move the head or tail pointer, wrapping at the end of the buffer
//
//===========================================================================
PMIDI_DATA CMidiQueue::ComputeNext( PMIDI_DATA pCur )
{
if ( ++pCur >= m_pEnd )
pCur = m_Buffer;
return pCur;
} // PMIDI_DATA CMidiQueue::ComputeNext( PMIDI_DATA pCur )
//===========================================================================
//
// Reset the MIDI input buffer
//
//===========================================================================
void CMidiQueue::Reset()
{
//
// Midi buffer pointer initialization
//
m_pEnd = m_Buffer + ECHO_MIDI_QUEUE_SZ;
m_pFill = m_Buffer;
m_pDrain = m_Buffer;
} // void CMidiQueue::Reset()
typedef CMidiQueue * PCMidiQueue;
// *** CMidiQueue.cpp ***

103
src/add-ons/kernel/drivers/audio/echo/generic/CMidiQueue.h
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// ****************************************************************************
//
// CMidiQueue.h
//
// Include file for interfacing with the CMidiQueue class.
// Use a simple fixed size queue for managing a MIDI data.
// Fill & drain pointers are maintained automatically whenever
// an Add or Get function succeeds.
//
// Set editor tabs to 3 for your viewing pleasure.
//
// ----------------------------------------------------------------------------
//
// Copyright Echo Digital Audio Corporation (c) 1998 - 2002
// All rights reserved
// www.echoaudio.com
//
// Permission is hereby granted, free of charge, to any person obtaining a
// copy of this software and associated documentation files (the
// "Software"), to deal with the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// - Redistributions of source code must retain the above copyright
// notice, this list of conditions and the following disclaimers.
//
// - Redistributions in binary form must reproduce the above copyright
// notice, this list of conditions and the following disclaimers in the
// documentation and/or other materials provided with the distribution.
//
// - Neither the name of Echo Digital Audio, nor the names of its
// contributors may be used to endorse or promote products derived from
// this Software without specific prior written permission.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
// IN NO EVENT SHALL THE CONTRIBUTORS OR COPYRIGHT HOLDERS BE LIABLE FOR
// ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
// TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
// SOFTWARE OR THE USE OR OTHER DEALINGS WITH THE SOFTWARE.
//
// ****************************************************************************
// Prevent problems with multiple includes
#ifndef _MIDIQUEUEOBJECT_
#define _MIDIQUEUEOBJECT_
typedef BYTE MIDI_DATA;
typedef MIDI_DATA *PMIDI_DATA;
//
// Class used for simple MIDI byte queue
//
class CMidiQueue
{
public:
//
// Construction/destruction
//
CMidiQueue();
~CMidiQueue();
//
// Add/Retrieve methods
//
ECHOSTATUS GetMidi
(
MIDI_DATA &Midi
);
ECHOSTATUS AddMidi
(
MIDI_DATA Midi
);
//
// Reset the in/out ptrs
//
void Reset();
protected:
PMIDI_DATA ComputeNext( PMIDI_DATA pCur );
//
// Midi buffer management
//
MIDI_DATA m_Buffer[ ECHO_MIDI_QUEUE_SZ ];
PMIDI_DATA m_pEnd;
PMIDI_DATA m_pFill;
PMIDI_DATA m_pDrain;
}; // class CMidiQueue
typedef CMidiQueue * PCMidiQueue;
#endif
// *** CMidiQueue.H ***