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/*
LUFA Library
Copyright (C) Dean Camera, 2009.
dean [at] fourwalledcubicle [dot] com
www.fourwalledcubicle.com
*/
/*
Copyright 2009 Dean Camera (dean [at] fourwalledcubicle [dot] com)
Permission to use, copy, modify, and distribute this software
and its documentation for any purpose and without fee is hereby
granted, provided that the above copyright notice appear in all
copies and that both that the copyright notice and this
permission notice and warranty disclaimer appear in supporting
documentation, and that the name of the author not be used in
advertising or publicity pertaining to distribution of the
software without specific, written prior permission.
The author disclaim all warranties with regard to this
software, including all implied warranties of merchantability
and fitness. In no event shall the author be liable for any
special, indirect or consequential damages or any damages
whatsoever resulting from loss of use, data or profits, whether
in an action of contract, negligence or other tortious action,
arising out of or in connection with the use or performance of
this software.
*/
#include "Audio.h"
void Audio_Device_ProcessControlPacket(USB_ClassInfo_Audio_t* AudioInterfaceInfo)
{
if (!(Endpoint_IsSETUPReceived()))
return;
if (USB_ControlRequest.wIndex != AudioInterfaceInfo->StreamingInterfaceNumber)
return;
switch (USB_ControlRequest.bRequest)
{
case REQ_SetInterface:
if (USB_ControlRequest.bmRequestType == (REQDIR_HOSTTODEVICE | REQTYPE_STANDARD | REQREC_INTERFACE))
{
Endpoint_ClearSETUP();
AudioInterfaceInfo->InterfaceEnabled = (USB_ControlRequest.wValue != 0);
while (!(Endpoint_IsINReady()));
Endpoint_ClearIN();
}
break;
}
}
bool Audio_Device_ConfigureEndpoints(USB_ClassInfo_Audio_t* AudioInterfaceInfo)
{
if (AudioInterfaceInfo->DataINEndpointNumber)
{
if (!(Endpoint_ConfigureEndpoint(AudioInterfaceInfo->DataINEndpointNumber, EP_TYPE_ISOCHRONOUS,
ENDPOINT_DIR_IN, AudioInterfaceInfo->DataINEndpointSize,
ENDPOINT_BANK_DOUBLE)))
{
return false;
}
}
if (AudioInterfaceInfo->DataOUTEndpointNumber)
{
if (!(Endpoint_ConfigureEndpoint(AudioInterfaceInfo->DataOUTEndpointNumber, EP_TYPE_ISOCHRONOUS,
ENDPOINT_DIR_OUT, AudioInterfaceInfo->DataOUTEndpointSize,
ENDPOINT_BANK_DOUBLE)))
{
return false;
}
}
return true;
}
void Audio_Device_USBTask(USB_ClassInfo_Audio_t* AudioInterfaceInfo)
{
}
int8_t Audio_Device_ReadSample8(void)
{
int8_t Sample;
Sample = Endpoint_Read_Byte();
if (!(Endpoint_IsReadWriteAllowed()))
Endpoint_ClearOUT();
return Sample;
}
int16_t Audio_Device_ReadSample16(void)
{
int16_t Sample;
Sample = (int16_t)Endpoint_Read_Word_LE();
if (!(Endpoint_IsReadWriteAllowed()))
Endpoint_ClearOUT();
return Sample;
}
int32_t Audio_Device_ReadSample24(void)
{
int32_t Sample;
Sample = (((uint32_t)Endpoint_Read_Byte() << 16) | Endpoint_Read_Word_LE());
if (!(Endpoint_IsReadWriteAllowed()))
Endpoint_ClearOUT();
return Sample;
}
void Audio_Device_WriteSample8(int8_t Sample)
{
Endpoint_Write_Byte(Sample);
if (!(Endpoint_IsReadWriteAllowed()))
Endpoint_ClearIN();
}
void Audio_Device_WriteSample16(int16_t Sample)
{
Endpoint_Write_Word_LE(Sample);
if (!(Endpoint_IsReadWriteAllowed()))
Endpoint_ClearIN();
}
void Audio_Device_WriteSample24(int32_t Sample)
{
Endpoint_Write_Byte(Sample >> 16);
Endpoint_Write_Word_LE(Sample);
if (!(Endpoint_IsReadWriteAllowed()))
Endpoint_ClearIN();
}
bool Audio_Device_IsSampleReceived(USB_ClassInfo_Audio_t* AudioInterfaceInfo)
{
Endpoint_SelectEndpoint(AudioInterfaceInfo->DataOUTEndpointNumber);
return Endpoint_IsOUTReceived();
}
bool Audio_Device_IsReadyForNextSample(USB_ClassInfo_Audio_t* AudioInterfaceInfo)
{
Endpoint_SelectEndpoint(AudioInterfaceInfo->DataINEndpointNumber);
return Endpoint_IsINReady();
}
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