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/*
LUFA Library
Copyright (C) Dean Camera, 2012.
dean [at] fourwalledcubicle [dot] com
www.lufa-lib.org
*/
/*
Copyright 2012 Dean Camera (dean [at] fourwalledcubicle [dot] com)
Permission to use, copy, modify, distribute, and sell this
software and its documentation for any purpose is hereby granted
without fee, 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.
*/
#define __INCLUDE_FROM_USB_DRIVER
#include "../../Core/USBMode.h"
#if defined(USB_CAN_BE_HOST)
#define __INCLUDE_FROM_AUDIO_DRIVER
#define __INCLUDE_FROM_AUDIO_HOST_C
#include "AudioClassHost.h"
uint8_t Audio_Host_ConfigurePipes(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo,
uint16_t ConfigDescriptorSize,
void* ConfigDescriptorData)
{
USB_Descriptor_Endpoint_t* DataINEndpoint = NULL;
USB_Descriptor_Endpoint_t* DataOUTEndpoint = NULL;
USB_Descriptor_Interface_t* AudioControlInterface = NULL;
USB_Descriptor_Interface_t* AudioStreamingInterface = NULL;
memset(&AudioInterfaceInfo->State, 0x00, sizeof(AudioInterfaceInfo->State));
if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)
return AUDIO_ENUMERROR_InvalidConfigDescriptor;
while ((AudioInterfaceInfo->Config.DataINPipeNumber && !(DataINEndpoint)) ||
(AudioInterfaceInfo->Config.DataOUTPipeNumber && !(DataOUTEndpoint)))
{
if (!(AudioControlInterface) ||
USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_Audio_Host_NextAudioInterfaceDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
{
if (!(AudioControlInterface) ||
USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_Audio_Host_NextAudioStreamInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_Audio_Host_NextAudioControlInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
return AUDIO_ENUMERROR_NoCompatibleInterfaceFound;
}
AudioControlInterface = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Interface_t);
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
DCOMP_Audio_Host_NextAudioStreamInterface) != DESCRIPTOR_SEARCH_COMP_Found)
{
return AUDIO_ENUMERROR_NoCompatibleInterfaceFound;
}
}
AudioStreamingInterface = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Interface_t);
DataINEndpoint = NULL;
DataOUTEndpoint = NULL;
continue;
}
USB_Descriptor_Endpoint_t* EndpointData = DESCRIPTOR_PCAST(ConfigDescriptorData, USB_Descriptor_Endpoint_t);
if ((EndpointData->EndpointAddress & ENDPOINT_DIR_MASK) == ENDPOINT_DIR_IN)
DataINEndpoint = EndpointData;
else
DataOUTEndpoint = EndpointData;
}
for (uint8_t PipeNum = 1; PipeNum < PIPE_TOTAL_PIPES; PipeNum++)
{
uint16_t Size;
uint8_t Type;
uint8_t Token;
uint8_t EndpointAddress;
bool DoubleBanked;
if (PipeNum == AudioInterfaceInfo->Config.DataINPipeNumber)
{
Size = le16_to_cpu(DataINEndpoint->EndpointSize);
EndpointAddress = DataINEndpoint->EndpointAddress;
Token = PIPE_TOKEN_IN;
Type = EP_TYPE_ISOCHRONOUS;
DoubleBanked = true;
AudioInterfaceInfo->State.DataINPipeSize = DataINEndpoint->EndpointSize;
}
else if (PipeNum == AudioInterfaceInfo->Config.DataOUTPipeNumber)
{
Size = le16_to_cpu(DataOUTEndpoint->EndpointSize);
EndpointAddress = DataOUTEndpoint->EndpointAddress;
Token = PIPE_TOKEN_OUT;
Type = EP_TYPE_ISOCHRONOUS;
DoubleBanked = true;
AudioInterfaceInfo->State.DataOUTPipeSize = DataOUTEndpoint->EndpointSize;
}
else
{
continue;
}
if (!(Pipe_ConfigurePipe(PipeNum, Type, Token, EndpointAddress, Size,
DoubleBanked ? PIPE_BANK_DOUBLE : PIPE_BANK_SINGLE)))
{
return AUDIO_ENUMERROR_PipeConfigurationFailed;
}
}
AudioInterfaceInfo->State.ControlInterfaceNumber = AudioControlInterface->InterfaceNumber;
AudioInterfaceInfo->State.StreamingInterfaceNumber = AudioStreamingInterface->InterfaceNumber;
AudioInterfaceInfo->State.EnabledStreamingAltIndex = AudioStreamingInterface->AlternateSetting;
AudioInterfaceInfo->State.IsActive = true;
return AUDIO_ENUMERROR_NoError;
}
static uint8_t DCOMP_Audio_Host_NextAudioControlInterface(void* CurrentDescriptor)
{
USB_Descriptor_Header_t* Header = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Header_t);
if (Header->Type == DTYPE_Interface)
{
USB_Descriptor_Interface_t* Interface = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Interface_t);
if ((Interface->Class == AUDIO_CSCP_AudioClass) &&
(Interface->SubClass == AUDIO_CSCP_ControlSubclass) &&
(Interface->Protocol == AUDIO_CSCP_ControlProtocol))
{
return DESCRIPTOR_SEARCH_Found;
}
}
return DESCRIPTOR_SEARCH_NotFound;
}
static uint8_t DCOMP_Audio_Host_NextAudioStreamInterface(void* CurrentDescriptor)
{
USB_Descriptor_Header_t* Header = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Header_t);
if (Header->Type == DTYPE_Interface)
{
USB_Descriptor_Interface_t* Interface = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Interface_t);
if ((Interface->Class == AUDIO_CSCP_AudioClass) &&
(Interface->SubClass == AUDIO_CSCP_AudioStreamingSubclass) &&
(Interface->Protocol == AUDIO_CSCP_StreamingProtocol))
{
return DESCRIPTOR_SEARCH_Found;
}
}
return DESCRIPTOR_SEARCH_NotFound;
}
static uint8_t DCOMP_Audio_Host_NextAudioInterfaceDataEndpoint(void* CurrentDescriptor)
{
USB_Descriptor_Header_t* Header = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Header_t);
if (Header->Type == DTYPE_Endpoint)
{
USB_Descriptor_Endpoint_t* Endpoint = DESCRIPTOR_PCAST(CurrentDescriptor, USB_Descriptor_Endpoint_t);
if ((Endpoint->Attributes & EP_TYPE_MASK) == EP_TYPE_ISOCHRONOUS)
return DESCRIPTOR_SEARCH_Found;
}
else if (Header->Type == DTYPE_Interface)
{
return DESCRIPTOR_SEARCH_Fail;
}
return DESCRIPTOR_SEARCH_NotFound;
}
uint8_t Audio_Host_StartStopStreaming(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo,
const bool EnableStreaming)
{
if (!(AudioInterfaceInfo->State.IsActive))
return HOST_SENDCONTROL_DeviceDisconnected;
return USB_Host_SetInterfaceAltSetting(AudioInterfaceInfo->State.StreamingInterfaceNumber,
EnableStreaming ? AudioInterfaceInfo->State.EnabledStreamingAltIndex : 0);
}
uint8_t Audio_Host_GetSetEndpointProperty(USB_ClassInfo_Audio_Host_t* const AudioInterfaceInfo,
const uint8_t DataPipeIndex,
const uint8_t EndpointProperty,
const uint8_t EndpointControl,
const uint16_t DataLength,
void* const Data)
{
if (!(AudioInterfaceInfo->State.IsActive))
return HOST_SENDCONTROL_DeviceDisconnected;
uint8_t RequestType;
uint8_t EndpointAddress;
if (EndpointProperty & 0x80)
RequestType = (REQDIR_DEVICETOHOST | REQTYPE_CLASS | REQREC_ENDPOINT);
else
RequestType = (REQDIR_HOSTTODEVICE | REQTYPE_CLASS | REQREC_ENDPOINT);
Pipe_SelectPipe(DataPipeIndex);
EndpointAddress = Pipe_GetBoundEndpointAddress();
USB_ControlRequest = (USB_Request_Header_t)
{
.bmRequestType = RequestType,
.bRequest = EndpointProperty,
.wValue = ((uint16_t)EndpointControl << 8),
.wIndex = EndpointAddress,
.wLength = DataLength,
};
Pipe_SelectPipe(PIPE_CONTROLPIPE);
return USB_Host_SendControlRequest(Data);
}
#endif
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