60b30c0363
git-subtree-dir: lib/lufa git-subtree-split: 385d4030035dbaf41591309dbde47653bd03841b
232 lines
7 KiB
C
232 lines
7 KiB
C
/*
|
|
LUFA Library
|
|
Copyright (C) Dean Camera, 2017.
|
|
|
|
dean [at] fourwalledcubicle [dot] com
|
|
www.lufa-lib.org
|
|
*/
|
|
|
|
/*
|
|
Copyright 2017 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 disclaims 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_MIDI_DRIVER
|
|
#define __INCLUDE_FROM_MIDI_HOST_C
|
|
#include "MIDIClassHost.h"
|
|
|
|
uint8_t MIDI_Host_ConfigurePipes(USB_ClassInfo_MIDI_Host_t* const MIDIInterfaceInfo,
|
|
uint16_t ConfigDescriptorSize,
|
|
void* ConfigDescriptorData)
|
|
{
|
|
USB_Descriptor_Endpoint_t* DataINEndpoint = NULL;
|
|
USB_Descriptor_Endpoint_t* DataOUTEndpoint = NULL;
|
|
USB_Descriptor_Interface_t* MIDIInterface = NULL;
|
|
|
|
memset(&MIDIInterfaceInfo->State, 0x00, sizeof(MIDIInterfaceInfo->State));
|
|
|
|
if (DESCRIPTOR_TYPE(ConfigDescriptorData) != DTYPE_Configuration)
|
|
return MIDI_ENUMERROR_InvalidConfigDescriptor;
|
|
|
|
while (!(DataINEndpoint) || !(DataOUTEndpoint))
|
|
{
|
|
if (!(MIDIInterface) ||
|
|
USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
|
|
DCOMP_MIDI_Host_NextMIDIStreamingDataEndpoint) != DESCRIPTOR_SEARCH_COMP_Found)
|
|
{
|
|
if (USB_GetNextDescriptorComp(&ConfigDescriptorSize, &ConfigDescriptorData,
|
|
DCOMP_MIDI_Host_NextMIDIStreamingInterface) != DESCRIPTOR_SEARCH_COMP_Found)
|
|
{
|
|
return MIDI_ENUMERROR_NoCompatibleInterfaceFound;
|
|
}
|
|
|
|
MIDIInterface = 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;
|
|
}
|
|
|
|
MIDIInterfaceInfo->Config.DataINPipe.Size = le16_to_cpu(DataINEndpoint->EndpointSize);
|
|
MIDIInterfaceInfo->Config.DataINPipe.EndpointAddress = DataINEndpoint->EndpointAddress;
|
|
MIDIInterfaceInfo->Config.DataINPipe.Type = EP_TYPE_BULK;
|
|
|
|
MIDIInterfaceInfo->Config.DataOUTPipe.Size = le16_to_cpu(DataOUTEndpoint->EndpointSize);
|
|
MIDIInterfaceInfo->Config.DataOUTPipe.EndpointAddress = DataOUTEndpoint->EndpointAddress;
|
|
MIDIInterfaceInfo->Config.DataOUTPipe.Type = EP_TYPE_BULK;
|
|
|
|
if (!(Pipe_ConfigurePipeTable(&MIDIInterfaceInfo->Config.DataINPipe, 1)))
|
|
return MIDI_ENUMERROR_PipeConfigurationFailed;
|
|
|
|
if (!(Pipe_ConfigurePipeTable(&MIDIInterfaceInfo->Config.DataOUTPipe, 1)))
|
|
return MIDI_ENUMERROR_PipeConfigurationFailed;
|
|
|
|
MIDIInterfaceInfo->State.InterfaceNumber = MIDIInterface->InterfaceNumber;
|
|
MIDIInterfaceInfo->State.IsActive = true;
|
|
|
|
return MIDI_ENUMERROR_NoError;
|
|
}
|
|
|
|
static uint8_t DCOMP_MIDI_Host_NextMIDIStreamingInterface(void* const 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_MIDIStreamingSubclass) &&
|
|
(Interface->Protocol == AUDIO_CSCP_StreamingProtocol))
|
|
{
|
|
return DESCRIPTOR_SEARCH_Found;
|
|
}
|
|
}
|
|
|
|
return DESCRIPTOR_SEARCH_NotFound;
|
|
}
|
|
|
|
static uint8_t DCOMP_MIDI_Host_NextMIDIStreamingDataEndpoint(void* const 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);
|
|
|
|
uint8_t EndpointType = (Endpoint->Attributes & EP_TYPE_MASK);
|
|
|
|
if ((EndpointType == EP_TYPE_BULK) && !(Pipe_IsEndpointBound(Endpoint->EndpointAddress)))
|
|
return DESCRIPTOR_SEARCH_Found;
|
|
}
|
|
else if (Header->Type == DTYPE_Interface)
|
|
{
|
|
return DESCRIPTOR_SEARCH_Fail;
|
|
}
|
|
|
|
return DESCRIPTOR_SEARCH_NotFound;
|
|
}
|
|
|
|
void MIDI_Host_USBTask(USB_ClassInfo_MIDI_Host_t* const MIDIInterfaceInfo)
|
|
{
|
|
if ((USB_HostState != HOST_STATE_Configured) || !(MIDIInterfaceInfo->State.IsActive))
|
|
return;
|
|
|
|
#if !defined(NO_CLASS_DRIVER_AUTOFLUSH)
|
|
MIDI_Host_Flush(MIDIInterfaceInfo);
|
|
#endif
|
|
}
|
|
|
|
uint8_t MIDI_Host_Flush(USB_ClassInfo_MIDI_Host_t* const MIDIInterfaceInfo)
|
|
{
|
|
if ((USB_HostState != HOST_STATE_Configured) || !(MIDIInterfaceInfo->State.IsActive))
|
|
return PIPE_RWSTREAM_DeviceDisconnected;
|
|
|
|
uint8_t ErrorCode;
|
|
|
|
Pipe_SelectPipe(MIDIInterfaceInfo->Config.DataOUTPipe.Address);
|
|
Pipe_Unfreeze();
|
|
|
|
if (Pipe_BytesInPipe())
|
|
{
|
|
Pipe_ClearOUT();
|
|
|
|
if ((ErrorCode = Pipe_WaitUntilReady()) != PIPE_READYWAIT_NoError)
|
|
{
|
|
Pipe_Freeze();
|
|
return ErrorCode;
|
|
}
|
|
}
|
|
|
|
Pipe_Freeze();
|
|
|
|
return PIPE_READYWAIT_NoError;
|
|
}
|
|
|
|
uint8_t MIDI_Host_SendEventPacket(USB_ClassInfo_MIDI_Host_t* const MIDIInterfaceInfo,
|
|
MIDI_EventPacket_t* const Event)
|
|
{
|
|
if ((USB_HostState != HOST_STATE_Configured) || !(MIDIInterfaceInfo->State.IsActive))
|
|
return HOST_SENDCONTROL_DeviceDisconnected;
|
|
|
|
uint8_t ErrorCode;
|
|
|
|
Pipe_SelectPipe(MIDIInterfaceInfo->Config.DataOUTPipe.Address);
|
|
Pipe_Unfreeze();
|
|
|
|
if ((ErrorCode = Pipe_Write_Stream_LE(Event, sizeof(MIDI_EventPacket_t), NULL)) != PIPE_RWSTREAM_NoError)
|
|
{
|
|
Pipe_Freeze();
|
|
return ErrorCode;
|
|
}
|
|
|
|
if (!(Pipe_IsReadWriteAllowed()))
|
|
Pipe_ClearOUT();
|
|
|
|
Pipe_Freeze();
|
|
|
|
return PIPE_RWSTREAM_NoError;
|
|
}
|
|
|
|
bool MIDI_Host_ReceiveEventPacket(USB_ClassInfo_MIDI_Host_t* const MIDIInterfaceInfo,
|
|
MIDI_EventPacket_t* const Event)
|
|
{
|
|
if ((USB_HostState != HOST_STATE_Configured) || !(MIDIInterfaceInfo->State.IsActive))
|
|
return HOST_SENDCONTROL_DeviceDisconnected;
|
|
|
|
bool DataReady = false;
|
|
|
|
Pipe_SelectPipe(MIDIInterfaceInfo->Config.DataINPipe.Address);
|
|
Pipe_Unfreeze();
|
|
|
|
if (Pipe_IsINReceived())
|
|
{
|
|
if (Pipe_BytesInPipe())
|
|
{
|
|
Pipe_Read_Stream_LE(Event, sizeof(MIDI_EventPacket_t), NULL);
|
|
DataReady = true;
|
|
}
|
|
|
|
if (!(Pipe_BytesInPipe()))
|
|
Pipe_ClearIN();
|
|
}
|
|
|
|
Pipe_Freeze();
|
|
|
|
return DataReady;
|
|
}
|
|
|
|
#endif
|
|
|