You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
160 lines
4.0 KiB
160 lines
4.0 KiB
/*
|
|
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 USB_Audio_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 USB_Audio_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 USB_Audio_USBTask(USB_ClassInfo_Audio_t* AudioInterfaceInfo)
|
|
{
|
|
|
|
}
|
|
|
|
int8_t USB_Audio_ReadSample8(void)
|
|
{
|
|
int8_t Sample;
|
|
|
|
Sample = Endpoint_Read_Byte();
|
|
|
|
if (!(Endpoint_IsReadWriteAllowed()))
|
|
Endpoint_ClearOUT();
|
|
|
|
return Sample;
|
|
}
|
|
|
|
int16_t USB_Audio_ReadSample16(void)
|
|
{
|
|
int16_t Sample;
|
|
|
|
Sample = (int16_t)Endpoint_Read_Word_LE();
|
|
|
|
if (!(Endpoint_IsReadWriteAllowed()))
|
|
Endpoint_ClearOUT();
|
|
|
|
return Sample;
|
|
}
|
|
|
|
int32_t USB_Audio_ReadSample24(void)
|
|
{
|
|
int32_t Sample;
|
|
|
|
Sample = (((uint32_t)Endpoint_Read_Byte() << 16) | Endpoint_Read_Word_LE());
|
|
|
|
if (!(Endpoint_IsReadWriteAllowed()))
|
|
Endpoint_ClearOUT();
|
|
|
|
return Sample;
|
|
}
|
|
|
|
void USB_Audio_WriteSample8(int8_t Sample)
|
|
{
|
|
Endpoint_Write_Byte(Sample);
|
|
|
|
if (!(Endpoint_IsReadWriteAllowed()))
|
|
Endpoint_ClearIN();
|
|
}
|
|
|
|
void USB_Audio_WriteSample16(int16_t Sample)
|
|
{
|
|
Endpoint_Write_Word_LE(Sample);
|
|
|
|
if (!(Endpoint_IsReadWriteAllowed()))
|
|
Endpoint_ClearIN();
|
|
}
|
|
|
|
void USB_Audio_WriteSample24(int32_t Sample)
|
|
{
|
|
Endpoint_Write_Byte(Sample >> 16);
|
|
Endpoint_Write_Word_LE(Sample);
|
|
|
|
if (!(Endpoint_IsReadWriteAllowed()))
|
|
Endpoint_ClearIN();
|
|
}
|
|
|
|
bool USB_Audio_IsSampleReceived(USB_ClassInfo_Audio_t* AudioInterfaceInfo)
|
|
{
|
|
Endpoint_SelectEndpoint(AudioInterfaceInfo->DataOUTEndpointNumber);
|
|
return Endpoint_IsOUTReceived();
|
|
}
|
|
|
|
bool USB_Audio_IsReadyForNextSample(USB_ClassInfo_Audio_t* AudioInterfaceInfo)
|
|
{
|
|
Endpoint_SelectEndpoint(AudioInterfaceInfo->DataINEndpointNumber);
|
|
return Endpoint_IsINReady();
|
|
}
|