diff options
Diffstat (limited to 'lib/lufa/LUFA/Drivers/USB/Class/Host/MIDIClassHost.c')
| -rw-r--r-- | lib/lufa/LUFA/Drivers/USB/Class/Host/MIDIClassHost.c | 231 |
1 files changed, 231 insertions, 0 deletions
diff --git a/lib/lufa/LUFA/Drivers/USB/Class/Host/MIDIClassHost.c b/lib/lufa/LUFA/Drivers/USB/Class/Host/MIDIClassHost.c new file mode 100644 index 000000000..635148f5e --- /dev/null +++ b/lib/lufa/LUFA/Drivers/USB/Class/Host/MIDIClassHost.c @@ -0,0 +1,231 @@ +/* + 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 + |