312 lines
11 KiB
C
312 lines
11 KiB
C
/*
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LUFA Library
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Copyright (C) Dean Camera, 2017.
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dean [at] fourwalledcubicle [dot] com
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www.lufa-lib.org
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*/
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/*
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Copyright 2017 Dean Camera (dean [at] fourwalledcubicle [dot] com)
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Permission to use, copy, modify, distribute, and sell this
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software and its documentation for any purpose is hereby granted
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without fee, provided that the above copyright notice appear in
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all copies and that both that the copyright notice and this
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permission notice and warranty disclaimer appear in supporting
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documentation, and that the name of the author not be used in
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advertising or publicity pertaining to distribution of the
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software without specific, written prior permission.
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The author disclaims all warranties with regard to this
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software, including all implied warranties of merchantability
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and fitness. In no event shall the author be liable for any
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special, indirect or consequential damages or any damages
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whatsoever resulting from loss of use, data or profits, whether
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in an action of contract, negligence or other tortious action,
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arising out of or in connection with the use or performance of
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this software.
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*/
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/** \file
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*
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* USB Device Descriptors, for library use when in USB device mode. Descriptors are special
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* computer-readable structures which the host requests upon device enumeration, to determine
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* the device's capabilities and functions.
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*/
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#include "Descriptors.h"
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/** Device descriptor structure. This descriptor, located in FLASH memory, describes the overall
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* device characteristics, including the supported USB version, control endpoint size and the
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* number of device configurations. The descriptor is read out by the USB host when the enumeration
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* process begins.
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*/
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const USB_Descriptor_Device_t PROGMEM DeviceDescriptor =
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{
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.Header = {.Size = sizeof(USB_Descriptor_Device_t), .Type = DTYPE_Device},
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.USBSpecification = VERSION_BCD(1,1,0),
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.Class = USB_CSCP_NoDeviceClass,
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.SubClass = USB_CSCP_NoDeviceSubclass,
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.Protocol = USB_CSCP_NoDeviceProtocol,
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.Endpoint0Size = FIXED_CONTROL_ENDPOINT_SIZE,
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.VendorID = 0x03EB,
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.ProductID = 0x2046,
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.ReleaseNumber = VERSION_BCD(0,0,2),
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.ManufacturerStrIndex = STRING_ID_Manufacturer,
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.ProductStrIndex = STRING_ID_Product,
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.SerialNumStrIndex = NO_DESCRIPTOR,
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.NumberOfConfigurations = FIXED_NUM_CONFIGURATIONS
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};
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/** Configuration descriptor structure. This descriptor, located in FLASH memory, describes the usage
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* of the device in one of its supported configurations, including information about any device interfaces
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* and endpoints. The descriptor is read out by the USB host during the enumeration process when selecting
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* a configuration so that the host may correctly communicate with the USB device.
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*/
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const USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
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{
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.Config =
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{
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.Header = {.Size = sizeof(USB_Descriptor_Configuration_Header_t), .Type = DTYPE_Configuration},
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.TotalConfigurationSize = sizeof(USB_Descriptor_Configuration_t),
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.TotalInterfaces = 2,
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.ConfigurationNumber = 1,
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.ConfigurationStrIndex = NO_DESCRIPTOR,
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.ConfigAttributes = (USB_CONFIG_ATTR_RESERVED | USB_CONFIG_ATTR_SELFPOWERED),
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.MaxPowerConsumption = USB_CONFIG_POWER_MA(100)
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},
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.Audio_ControlInterface =
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{
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.Header = {.Size = sizeof(USB_Descriptor_Interface_t), .Type = DTYPE_Interface},
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.InterfaceNumber = INTERFACE_ID_AudioControl,
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.AlternateSetting = 0,
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.TotalEndpoints = 0,
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.Class = AUDIO_CSCP_AudioClass,
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.SubClass = AUDIO_CSCP_ControlSubclass,
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.Protocol = AUDIO_CSCP_ControlProtocol,
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.InterfaceStrIndex = NO_DESCRIPTOR
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},
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.Audio_ControlInterface_SPC =
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{
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.Header = {.Size = sizeof(USB_Audio_Descriptor_Interface_AC_t), .Type = DTYPE_CSInterface},
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.Subtype = AUDIO_DSUBTYPE_CSInterface_Header,
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.ACSpecification = VERSION_BCD(1,0,0),
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.TotalLength = (sizeof(USB_Audio_Descriptor_Interface_AC_t) +
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sizeof(USB_Audio_Descriptor_InputTerminal_t) +
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sizeof(USB_Audio_Descriptor_OutputTerminal_t)),
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.InCollection = 1,
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.InterfaceNumber = INTERFACE_ID_AudioStream,
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},
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.Audio_InputTerminal =
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{
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.Header = {.Size = sizeof(USB_Audio_Descriptor_InputTerminal_t), .Type = DTYPE_CSInterface},
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.Subtype = AUDIO_DSUBTYPE_CSInterface_InputTerminal,
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.TerminalID = 0x01,
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.TerminalType = AUDIO_TERMINAL_STREAMING,
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.AssociatedOutputTerminal = 0x00,
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.TotalChannels = 2,
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.ChannelConfig = (AUDIO_CHANNEL_LEFT_FRONT | AUDIO_CHANNEL_RIGHT_FRONT),
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.ChannelStrIndex = NO_DESCRIPTOR,
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.TerminalStrIndex = NO_DESCRIPTOR
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},
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.Audio_OutputTerminal =
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{
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.Header = {.Size = sizeof(USB_Audio_Descriptor_OutputTerminal_t), .Type = DTYPE_CSInterface},
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.Subtype = AUDIO_DSUBTYPE_CSInterface_OutputTerminal,
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.TerminalID = 0x02,
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.TerminalType = AUDIO_TERMINAL_OUT_SPEAKER,
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.AssociatedInputTerminal = 0x00,
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.SourceID = 0x01,
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.TerminalStrIndex = NO_DESCRIPTOR
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},
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.Audio_StreamInterface_Alt0 =
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{
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.Header = {.Size = sizeof(USB_Descriptor_Interface_t), .Type = DTYPE_Interface},
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.InterfaceNumber = INTERFACE_ID_AudioStream,
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.AlternateSetting = 0,
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.TotalEndpoints = 0,
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.Class = AUDIO_CSCP_AudioClass,
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.SubClass = AUDIO_CSCP_AudioStreamingSubclass,
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.Protocol = AUDIO_CSCP_StreamingProtocol,
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.InterfaceStrIndex = NO_DESCRIPTOR
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},
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.Audio_StreamInterface_Alt1 =
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{
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.Header = {.Size = sizeof(USB_Descriptor_Interface_t), .Type = DTYPE_Interface},
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.InterfaceNumber = INTERFACE_ID_AudioStream,
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.AlternateSetting = 1,
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.TotalEndpoints = 1,
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.Class = AUDIO_CSCP_AudioClass,
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.SubClass = AUDIO_CSCP_AudioStreamingSubclass,
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.Protocol = AUDIO_CSCP_StreamingProtocol,
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.InterfaceStrIndex = NO_DESCRIPTOR
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},
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.Audio_StreamInterface_SPC =
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{
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.Header = {.Size = sizeof(USB_Audio_Descriptor_Interface_AS_t), .Type = DTYPE_CSInterface},
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.Subtype = AUDIO_DSUBTYPE_CSInterface_General,
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.TerminalLink = 0x01,
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.FrameDelay = 1,
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.AudioFormat = 0x0001
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},
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.Audio_AudioFormat =
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{
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.Header = {.Size = sizeof(USB_Audio_Descriptor_Format_t) +
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sizeof(ConfigurationDescriptor.Audio_AudioFormatSampleRates),
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.Type = DTYPE_CSInterface},
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.Subtype = AUDIO_DSUBTYPE_CSInterface_FormatType,
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.FormatType = 0x01,
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.Channels = 0x02,
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.SubFrameSize = 0x02,
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.BitResolution = 16,
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.TotalDiscreteSampleRates = (sizeof(ConfigurationDescriptor.Audio_AudioFormatSampleRates) / sizeof(USB_Audio_SampleFreq_t)),
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},
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.Audio_AudioFormatSampleRates =
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{
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AUDIO_SAMPLE_FREQ(8000),
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AUDIO_SAMPLE_FREQ(11025),
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AUDIO_SAMPLE_FREQ(22050),
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AUDIO_SAMPLE_FREQ(44100),
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AUDIO_SAMPLE_FREQ(48000),
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},
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.Audio_StreamEndpoint =
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{
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.Endpoint =
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{
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.Header = {.Size = sizeof(USB_Audio_Descriptor_StreamEndpoint_Std_t), .Type = DTYPE_Endpoint},
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.EndpointAddress = AUDIO_STREAM_EPADDR,
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.Attributes = (EP_TYPE_ISOCHRONOUS | ENDPOINT_ATTR_SYNC | ENDPOINT_USAGE_DATA),
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.EndpointSize = AUDIO_STREAM_EPSIZE,
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.PollingIntervalMS = 0x01
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},
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.Refresh = 0,
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.SyncEndpointNumber = 0
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},
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.Audio_StreamEndpoint_SPC =
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{
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.Header = {.Size = sizeof(USB_Audio_Descriptor_StreamEndpoint_Spc_t), .Type = DTYPE_CSEndpoint},
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.Subtype = AUDIO_DSUBTYPE_CSEndpoint_General,
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.Attributes = (AUDIO_EP_ACCEPTS_SMALL_PACKETS | AUDIO_EP_SAMPLE_FREQ_CONTROL),
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.LockDelayUnits = 0x00,
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.LockDelay = 0x0000
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}
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};
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/** Language descriptor structure. This descriptor, located in FLASH memory, is returned when the host requests
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* the string descriptor with index 0 (the first index). It is actually an array of 16-bit integers, which indicate
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* via the language ID table available at USB.org what languages the device supports for its string descriptors.
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*/
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const USB_Descriptor_String_t PROGMEM LanguageString = USB_STRING_DESCRIPTOR_ARRAY(LANGUAGE_ID_ENG);
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/** Manufacturer descriptor string. This is a Unicode string containing the manufacturer's details in human readable
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* form, and is read out upon request by the host when the appropriate string ID is requested, listed in the Device
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* Descriptor.
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*/
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const USB_Descriptor_String_t PROGMEM ManufacturerString = USB_STRING_DESCRIPTOR(L"Dean Camera");
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/** Product descriptor string. This is a Unicode string containing the product's details in human readable form,
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* and is read out upon request by the host when the appropriate string ID is requested, listed in the Device
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* Descriptor.
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*/
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const USB_Descriptor_String_t PROGMEM ProductString = USB_STRING_DESCRIPTOR(L"LUFA Audio Out Demo");
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/** This function is called by the library when in device mode, and must be overridden (see library "USB Descriptors"
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* documentation) by the application code so that the address and size of a requested descriptor can be given
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* to the USB library. When the device receives a Get Descriptor request on the control endpoint, this function
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* is called so that the descriptor details can be passed back and the appropriate descriptor sent back to the
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* USB host.
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*/
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uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
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const uint16_t wIndex,
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const void** const DescriptorAddress)
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{
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const uint8_t DescriptorType = (wValue >> 8);
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const uint8_t DescriptorNumber = (wValue & 0xFF);
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const void* Address = NULL;
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uint16_t Size = NO_DESCRIPTOR;
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switch (DescriptorType)
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{
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case DTYPE_Device:
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Address = &DeviceDescriptor;
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Size = sizeof(USB_Descriptor_Device_t);
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break;
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case DTYPE_Configuration:
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Address = &ConfigurationDescriptor;
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Size = sizeof(USB_Descriptor_Configuration_t);
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break;
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case DTYPE_String:
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switch (DescriptorNumber)
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{
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case STRING_ID_Language:
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Address = &LanguageString;
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Size = pgm_read_byte(&LanguageString.Header.Size);
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break;
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case STRING_ID_Manufacturer:
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Address = &ManufacturerString;
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Size = pgm_read_byte(&ManufacturerString.Header.Size);
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break;
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case STRING_ID_Product:
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Address = &ProductString;
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Size = pgm_read_byte(&ProductString.Header.Size);
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break;
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}
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break;
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}
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*DescriptorAddress = Address;
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return Size;
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}
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