+++ /dev/null
-/*
- LUFA Library
- Copyright (C) Dean Camera, 2011.
-
- dean [at] fourwalledcubicle [dot] com
- www.lufa-lib.org
-*/
-
-/*
- Copyright 2011 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 "Audio.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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