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AppleUSBAudioPlugin.cpp
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AppleUSBAudioPlugin.cpp
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/*
* Copyright (c) 1998-2008 Apple Computer, Inc. All rights reserved.
*
* @APPLE_LICENSE_HEADER_START@
*
* This file contains Original Code and/or Modifications of Original Code
* as defined in and that are subject to the Apple Public Source License
* Version 2.0 (the 'License'). You may not use this file except in
* compliance with the License. Please obtain a copy of the License at
* http://www.opensource.apple.com/apsl/ and read it before using this
* file.
*
* The Original Code and all software distributed under the License are
* distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
* EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
* INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
* Please see the License for the specific language governing rights and
* limitations under the License.
*
* @APPLE_LICENSE_HEADER_END@
*/
#include "AppleUSBAudioPlugin.h"
#include "AppleUSBAudioEngine.h"
#include <IOKit/IOLib.h>
#define super IOService
OSDefineMetaClassAndStructors (DJM03AudioPlugin, IOService)
OSMetaClassDefineReservedUsed(DJM03AudioPlugin, 0);
OSMetaClassDefineReservedUsed(DJM03AudioPlugin, 1);
OSMetaClassDefineReservedUnused(DJM03AudioPlugin, 2);
OSMetaClassDefineReservedUnused(DJM03AudioPlugin, 3);
OSMetaClassDefineReservedUnused(DJM03AudioPlugin, 4);
OSMetaClassDefineReservedUnused(DJM03AudioPlugin, 5);
OSMetaClassDefineReservedUnused(DJM03AudioPlugin, 6);
OSMetaClassDefineReservedUnused(DJM03AudioPlugin, 7);
OSMetaClassDefineReservedUnused(DJM03AudioPlugin, 8);
OSMetaClassDefineReservedUnused(DJM03AudioPlugin, 9);
OSMetaClassDefineReservedUnused(DJM03AudioPlugin, 10);
OSMetaClassDefineReservedUnused(DJM03AudioPlugin, 11);
OSMetaClassDefineReservedUnused(DJM03AudioPlugin, 12);
OSMetaClassDefineReservedUnused(DJM03AudioPlugin, 13);
OSMetaClassDefineReservedUnused(DJM03AudioPlugin, 14);
OSMetaClassDefineReservedUnused(DJM03AudioPlugin, 15);
// Standard IOService.h function methods
bool DJM03AudioPlugin::start (IOService * provider) {
if (!super::start (provider))
{
return FALSE;
}
reserved = (ExpansionData *)IOMalloc (sizeof(struct ExpansionData));
if (!reserved) {
return FALSE;
}
reserved->streamProvider = OSDynamicCast (DJM03AudioStream, provider);
if (reserved->streamProvider)
{
// Tell DJM03AudioStream that we're loaded
reserved->streamProvider->registerPlugin (this);
}
else
{
mOurProvider = OSDynamicCast (DJM03AudioEngine, provider);
if (mOurProvider)
{
// Tell DJM03AudioEngine that we're loaded
mOurProvider->registerPlugin (this);
}
}
return TRUE;
}
void DJM03AudioPlugin::stop (IOService * provider) {
// Tell the system that we're not an available resource anymore
publishResource ("DJM03AudioPlugin", NULL);
if (reserved) {
IOFree (reserved, sizeof(struct ExpansionData));
}
super::stop (provider);
}
IOReturn DJM03AudioPlugin::pluginDeviceRequest (IOUSBDevRequest * request, IOUSBCompletion * completion) {
IOReturn result;
result = kIOReturnError;
if (reserved && reserved->streamProvider)
{
result = reserved->streamProvider->pluginDeviceRequest (request, completion);
}
else if (mOurProvider)
{
result = mOurProvider->pluginDeviceRequest (request, completion);
}
return result;
}
void DJM03AudioPlugin::pluginSetConfigurationApp (const char * bundleID) {
if (reserved && reserved->streamProvider)
{
reserved->streamProvider->pluginSetConfigurationApp (bundleID);
}
else if (mOurProvider)
{
mOurProvider->pluginSetConfigurationApp (bundleID);
}
}
// Methods that the plugin will override
IOReturn DJM03AudioPlugin::pluginInit (IOService * provider, UInt16 vendorID, UInt16 modelID) {
return kIOReturnSuccess;
}
// OSMetaClassDefineReservedUsed(DJM03AudioPlugin, 1);
IOReturn DJM03AudioPlugin::pluginSetDirection (IOAudioStreamDirection direction) {
return kIOReturnSuccess;
}
IOReturn DJM03AudioPlugin::pluginStart () {
return kIOReturnSuccess;
}
IOReturn DJM03AudioPlugin::pluginSetFormat (const IOAudioStreamFormat * const newFormat, const IOAudioSampleRate * const newSampleRate) {
return kIOReturnSuccess;
}
IOReturn DJM03AudioPlugin::pluginReset () {
return kIOReturnSuccess;
}
IOReturn DJM03AudioPlugin::pluginProcess (float * mixBuf, UInt32 numSampleFrames, UInt32 numChannels) {
return kIOReturnSuccess;
}
// OSMetaClassDefineReservedUsed(DJM03AudioPlugin, 0);
IOReturn DJM03AudioPlugin::pluginProcessInput (float * destBuf, UInt32 numSampleFrames, UInt32 numChannels) {
return kIOReturnSuccess;
}
IOReturn DJM03AudioPlugin::pluginStop () {
return kIOReturnSuccess;
}