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@ -236,103 +236,244 @@
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#define EP_ACCEPTS_SMALL_PACKETS (0 << 7)
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/* Type Defines: */
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/** \brief Audio class-specific Interface Descriptor.
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/** \brief Audio class-specific Interface Descriptor (LUFA naming conventions).
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*
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* Type define for an Audio class-specific interface descriptor. This follows a regular interface descriptor to
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* supply extra information about the audio device's layout to the host. See the USB Audio specification for more
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* details.
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*
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* \see \ref USB_Audio_StdDescriptor_Interface_AC_t for the version of this type with standard element names.
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*/
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typedef struct
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{
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USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length. */
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uint8_t Subtype; /**< Sub type value used to distinguish between audio class-specific descriptors. */
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USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length. */
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uint8_t Subtype; /**< Sub type value used to distinguish between audio class-specific descriptors. */
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uint16_t ACSpecification; /**< Binary coded decimal value, indicating the supported Audio Class specification version. */
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uint16_t TotalLength; /**< Total length of the Audio class-specific descriptors, including this descriptor. */
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uint8_t InCollection; /**< Total number of audio class interfaces within this device. */
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uint8_t InterfaceNumbers[1]; /**< Interface numbers of each audio interface. */
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} USB_Audio_Descriptor_Interface_AC_t;
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/** \brief Audio class-specific Interface Descriptor (USB-IF naming conventions).
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*
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* Type define for an Audio class-specific interface descriptor. This follows a regular interface descriptor to
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* supply extra information about the audio device's layout to the host. See the USB Audio specification for more
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* details.
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*
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* \see \ref USB_Audio_Descriptor_Interface_AC_t for the version of this type with non-standard LUFA specific
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* element names.
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*/
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typedef struct
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{
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uint8_t bLength; /**< Size of the descriptor, in bytes. */
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uint8_t bDescriptorType; /**< Type of the descriptor, either a value in \ref USB_DescriptorTypes_t or a value
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* given by the specific class.
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*/
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uint16_t ACSpecification; /**< Binary coded decimal value, indicating the supported Audio Class specification version. */
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uint16_t TotalLength; /**< Total length of the Audio class-specific descriptors, including this descriptor. */
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uint8_t bDescriptorSubtype; /**< Sub type value used to distinguish between audio class-specific descriptors. */
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uint16_t bcdADC; /**< Binary coded decimal value, indicating the supported Audio Class specification version. */
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uint16_t wTotalLength; /**< Total length of the Audio class-specific descriptors, including this descriptor. */
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uint8_t InCollection; /**< Total number of audio class interfaces within this device. */
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uint8_t InterfaceNumbers[1]; /**< Interface numbers of each audio interface. */
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} USB_Audio_Interface_AC_t;
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uint8_t bInCollection; /**< Total number of audio class interfaces within this device. */
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uint8_t bInterfaceNumbers[1]; /**< Interface numbers of each audio interface. */
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} USB_Audio_StdDescriptor_Interface_AC_t;
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/** \brief Audio class-specific Feature Unit Descriptor.
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/** \brief Audio class-specific Feature Unit Descriptor (LUFA naming conventions).
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*
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* Type define for an Audio class-specific Feature Unit descriptor. This indicates to the host what features
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* are present in the device's audio stream for basic control, such as per-channel volume. See the USB Audio
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* specification for more details.
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*
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* \see \ref USB_Audio_StdDescriptor_FeatureUnit_t for the version of this type with standard element names.
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*/
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typedef struct
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{
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USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length. */
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uint8_t Subtype; /**< Sub type value used to distinguish between audio class-specific descriptors. */
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USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length. */
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uint8_t Subtype; /**< Sub type value used to distinguish between audio class-specific descriptors. */
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uint8_t UnitID; /**< ID value of this feature unit - must be a unique value within the device. */
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uint8_t SourceID; /**< Source ID value of the audio source input into this feature unit. */
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uint8_t UnitID; /**< ID value of this feature unit - must be a unique value within the device. */
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uint8_t SourceID; /**< Source ID value of the audio source input into this feature unit. */
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uint8_t ControlSize; /**< Size of each element in the ChanelControlls array. */
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uint8_t ChannelControls[3]; /**< Feature masks for the control channel, and each separate audio channel. */
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uint8_t ControlSize; /**< Size of each element in the ChanelControlls array. */
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uint8_t ChannelControls[3]; /**< Feature masks for the control channel, and each separate audio channel. */
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uint8_t FeatureUnitStrIndex; /**< Index of a string descriptor describing this descriptor within the device. */
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} USB_Audio_FeatureUnit_t;
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uint8_t FeatureUnitStrIndex; /**< Index of a string descriptor describing this descriptor within the device. */
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} USB_Audio_Descriptor_FeatureUnit_t;
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/** \brief Audio class-specific Input Terminal Descriptor.
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/** \brief Audio class-specific Feature Unit Descriptor (USB-IF naming conventions).
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*
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* Type define for an Audio class-specific Feature Unit descriptor. This indicates to the host what features
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* are present in the device's audio stream for basic control, such as per-channel volume. See the USB Audio
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* specification for more details.
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*
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* \see \ref USB_Audio_Descriptor_FeatureUnit_t for the version of this type with non-standard LUFA specific
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* element names.
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*/
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typedef struct
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{
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uint8_t bLength; /**< Size of the descriptor, in bytes. */
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uint8_t bDescriptorType; /**< Type of the descriptor, either a value in \ref USB_DescriptorTypes_t or a value
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* given by the specific class.
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*/
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uint8_t bDescriptorSubtype; /**< Sub type value used to distinguish between audio class-specific descriptors. */
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uint8_t bUnitID; /**< ID value of this feature unit - must be a unique value within the device. */
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uint8_t bSourceID; /**< Source ID value of the audio source input into this feature unit. */
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uint8_t bControlSize; /**< Size of each element in the ChanelControlls array. */
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uint8_t bmaControls[3]; /**< Feature masks for the control channel, and each separate audio channel. */
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uint8_t iFeature; /**< Index of a string descriptor describing this descriptor within the device. */
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} USB_Audio_StdDescriptor_FeatureUnit_t;
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/** \brief Audio class-specific Input Terminal Descriptor (LUFA naming conventions).
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*
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* Type define for an Audio class-specific input terminal descriptor. This indicates to the host that the device
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* contains an input audio source, either from a physical terminal on the device, or a logical terminal (for example,
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* a USB endpoint). See the USB Audio specification for more details.
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*
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* \see \ref USB_Audio_StdDescriptor_InputTerminal_t for the version of this type with standard element names.
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*/
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typedef struct
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{
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USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length. */
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uint8_t Subtype; /**< Sub type value used to distinguish between audio class-specific descriptors. */
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USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length. */
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uint8_t Subtype; /**< Sub type value used to distinguish between audio class-specific descriptors. */
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uint8_t TerminalID; /**< ID value of this terminal unit - must be a unique value within the device. */
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uint16_t TerminalType; /**< Type of terminal, a TERMINAL_* mask. */
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uint8_t AssociatedOutputTerminal; /**< ID of associated output terminal, for physically grouped terminals
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uint8_t TerminalID; /**< ID value of this terminal unit - must be a unique value within the device. */
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uint16_t TerminalType; /**< Type of terminal, a TERMINAL_* mask. */
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uint8_t AssociatedOutputTerminal; /**< ID of associated output terminal, for physically grouped terminals
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* such as the speaker and microphone of a phone handset.
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*/
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uint8_t TotalChannels; /**< Total number of separate audio channels within this interface (right, left, etc.) */
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uint16_t ChannelConfig; /**< CHANNEL_* masks indicating what channel layout is supported by this terminal. */
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uint8_t TotalChannels; /**< Total number of separate audio channels within this interface (right, left, etc.) */
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uint16_t ChannelConfig; /**< CHANNEL_* masks indicating what channel layout is supported by this terminal. */
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uint8_t ChannelStrIndex; /**< Index of a string descriptor describing this channel within the device. */
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uint8_t TerminalStrIndex; /**< Index of a string descriptor describing this descriptor within the device. */
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} USB_Audio_InputTerminal_t;
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uint8_t ChannelStrIndex; /**< Index of a string descriptor describing this channel within the device. */
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uint8_t TerminalStrIndex; /**< Index of a string descriptor describing this descriptor within the device. */
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} USB_Audio_Descriptor_InputTerminal_t;
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/** \brief Audio class-specific Output Terminal Descriptor.
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/** \brief Audio class-specific Input Terminal Descriptor (USB-IF naming conventions).
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*
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* Type define for an Audio class-specific input terminal descriptor. This indicates to the host that the device
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* contains an input audio source, either from a physical terminal on the device, or a logical terminal (for example,
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* a USB endpoint). See the USB Audio specification for more details.
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*
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* \see \ref USB_Audio_Descriptor_InputTerminal_t for the version of this type with non-standard LUFA specific
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* element names.
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*/
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typedef struct
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{
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uint8_t bLength; /**< Size of the descriptor, in bytes. */
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uint8_t bDescriptorType; /**< Type of the descriptor, either a value in \ref USB_DescriptorTypes_t or a value
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* given by the specific class.
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*/
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uint8_t bDescriptorSubtype; /**< Sub type value used to distinguish between audio class-specific descriptors. */
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uint8_t bTerminalID; /**< ID value of this terminal unit - must be a unique value within the device. */
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uint16_t wTerminalType; /**< Type of terminal, a TERMINAL_* mask. */
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uint8_t bAssocTerminal; /**< ID of associated output terminal, for physically grouped terminals
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* such as the speaker and microphone of a phone handset.
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*/
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uint8_t bNrChannels; /**< Total number of separate audio channels within this interface (right, left, etc.) */
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uint16_t wChannelConfig; /**< CHANNEL_* masks indicating what channel layout is supported by this terminal. */
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uint8_t iChannelNames; /**< Index of a string descriptor describing this channel within the device. */
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uint8_t iTerminal; /**< Index of a string descriptor describing this descriptor within the device. */
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} USB_Audio_StdDescriptor_InputTerminal_t;
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/** \brief Audio class-specific Output Terminal Descriptor (LUFA naming conventions).
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*
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* Type define for an Audio class-specific output terminal descriptor. This indicates to the host that the device
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* contains an output audio sink, either to a physical terminal on the device, or a logical terminal (for example,
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* a USB endpoint). See the USB Audio specification for more details.
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*
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* \see \ref USB_Audio_StdDescriptor_OutputTerminal_t for the version of this type with standard element names.
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*/
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typedef struct
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{
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USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length. */
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uint8_t Subtype; /**< Sub type value used to distinguish between audio class-specific descriptors. */
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USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length. */
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uint8_t Subtype; /**< Sub type value used to distinguish between audio class-specific descriptors. */
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uint8_t TerminalID; /**< ID value of this terminal unit - must be a unique value within the device. */
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uint16_t TerminalType; /**< Type of terminal, a TERMINAL_* mask. */
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uint8_t AssociatedInputTerminal; /**< ID of associated input terminal, for physically grouped terminals
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uint8_t TerminalID; /**< ID value of this terminal unit - must be a unique value within the device. */
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uint16_t TerminalType; /**< Type of terminal, a TERMINAL_* mask. */
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uint8_t AssociatedInputTerminal; /**< ID of associated input terminal, for physically grouped terminals
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* such as the speaker and microphone of a phone handset.
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*/
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uint8_t SourceID; /**< ID value of the unit this terminal's audio is sourced from. */
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uint8_t SourceID; /**< ID value of the unit this terminal's audio is sourced from. */
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uint8_t TerminalStrIndex; /**< Index of a string descriptor describing this descriptor within the device. */
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} USB_Audio_OutputTerminal_t;
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uint8_t TerminalStrIndex; /**< Index of a string descriptor describing this descriptor within the device. */
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} USB_Audio_Descriptor_OutputTerminal_t;
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/** \brief Audio class-specific Output Terminal Descriptor (USB-IF naming conventions).
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*
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* Type define for an Audio class-specific output terminal descriptor. This indicates to the host that the device
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* contains an output audio sink, either to a physical terminal on the device, or a logical terminal (for example,
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* a USB endpoint). See the USB Audio specification for more details.
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*
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* \see \ref USB_Audio_Descriptor_OutputTerminal_t for the version of this type with non-standard LUFA specific
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* element names.
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*/
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typedef struct
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{
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uint8_t bLength; /**< Size of the descriptor, in bytes. */
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uint8_t bDescriptorType; /**< Type of the descriptor, either a value in \ref USB_DescriptorTypes_t or a value
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* given by the specific class.
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*/
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uint8_t bDescriptorSubtype; /**< Sub type value used to distinguish between audio class-specific descriptors. */
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uint8_t bTerminalID; /**< ID value of this terminal unit - must be a unique value within the device. */
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uint16_t wTerminalType; /**< Type of terminal, a TERMINAL_* mask. */
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uint8_t bAssocTerminal; /**< ID of associated input terminal, for physically grouped terminals
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* such as the speaker and microphone of a phone handset.
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*/
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uint8_t bSourceID; /**< ID value of the unit this terminal's audio is sourced from. */
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uint8_t iTerminal; /**< Index of a string descriptor describing this descriptor within the device. */
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} USB_Audio_StdDescriptor_OutputTerminal_t;
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/** \brief Audio class-specific Streaming Audio Interface Descriptor.
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/** \brief Audio class-specific Streaming Audio Interface Descriptor (LUFA naming conventions).
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*
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* Type define for an Audio class-specific streaming interface descriptor. This indicates to the host
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* how audio streams within the device are formatted. See the USB Audio specification for more details.
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*
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* \see \ref USB_Audio_StdDescriptor_Interface_AS_t for the version of this type with standard element names.
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*/
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typedef struct
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{
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USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length. */
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uint8_t Subtype; /**< Sub type value used to distinguish between audio class-specific descriptors. */
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USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length. */
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uint8_t Subtype; /**< Sub type value used to distinguish between audio class-specific descriptors. */
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uint8_t TerminalLink; /**< ID value of the output terminal this descriptor is describing. */
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uint8_t TerminalLink; /**< ID value of the output terminal this descriptor is describing. */
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uint8_t FrameDelay; /**< Delay in frames resulting from the complete sample processing from input to output. */
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uint16_t AudioFormat; /**< Format of the audio stream, see Audio Device Formats specification. */
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} USB_Audio_Interface_AS_t;
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uint8_t FrameDelay; /**< Delay in frames resulting from the complete sample processing from input to output. */
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uint16_t AudioFormat; /**< Format of the audio stream, see Audio Device Formats specification. */
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} USB_Audio_Descriptor_Interface_AS_t;
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/** \brief Audio class-specific Streaming Audio Interface Descriptor (USB-IF naming conventions).
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*
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* Type define for an Audio class-specific streaming interface descriptor. This indicates to the host
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* how audio streams within the device are formatted. See the USB Audio specification for more details.
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*
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* \see \ref USB_Audio_Descriptor_Interface_AS_t for the version of this type with non-standard LUFA specific
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* element names.
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*/
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typedef struct
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{
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uint8_t bLength; /**< Size of the descriptor, in bytes. */
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uint8_t bDescriptorType; /**< Type of the descriptor, either a value in \ref USB_DescriptorTypes_t or a value
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* given by the specific class.
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*/
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uint8_t bDescriptorSubtype; /**< Sub type value used to distinguish between audio class-specific descriptors. */
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uint8_t bTerminalLink; /**< ID value of the output terminal this descriptor is describing. */
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uint8_t bDelay; /**< Delay in frames resulting from the complete sample processing from input to output. */
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uint16_t wFormatTag; /**< Format of the audio stream, see Audio Device Formats specification. */
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} USB_Audio_StdDescriptor_Interface_AS_t;
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/** \brief 24-Bit Audio Frequency Structure.
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*
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@ -341,35 +482,67 @@
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*/
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typedef struct
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{
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uint16_t LowWord; /**< Low 16 bits of the 24-bit value. */
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uint8_t HighByte; /**< Upper 8 bits of the 24-bit value. */
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uint16_t LowWord; /**< Low 16 bits of the 24-bit value. */
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uint8_t HighByte; /**< Upper 8 bits of the 24-bit value. */
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} USB_Audio_SampleFreq_t;
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/** \brief Audio class-specific Format Descriptor.
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/** \brief Audio class-specific Format Descriptor (LUFA naming conventions).
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*
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* Type define for an Audio class-specific audio format descriptor. This is used to give the host full details
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* about the number of channels, the sample resolution, acceptable sample frequencies and encoding method used
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* in the device's audio streams. See the USB Audio specification for more details.
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*
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* \see \ref USB_Audio_StdDescriptor_Format_t for the version of this type with standard element names.
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*/
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typedef struct
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{
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USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length. */
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uint8_t Subtype; /**< Sub type value used to distinguish between audio class-specific descriptors. */
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USB_Descriptor_Header_t Header; /**< Regular descriptor header containing the descriptor's type and length. */
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uint8_t Subtype; /**< Sub type value used to distinguish between audio class-specific descriptors. */
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uint8_t FormatType; /**< Format of the audio stream, see Audio Device Formats specification. */
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uint8_t Channels; /**< Total number of discrete channels in the stream. */
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uint8_t SubFrameSize; /**< Size in bytes of each channel's sample data in the stream. */
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uint8_t BitResolution; /**< Bits of resolution of each channel's samples in the stream. */
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uint8_t SampleFrequencyType; /**< Total number of sample frequencies supported by the device. */
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USB_Audio_SampleFreq_t SampleFrequencies[AUDIO_TOTAL_SAMPLE_RATES]; /**< Sample frequencies supported by the device (must be 24-bit). */
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} USB_Audio_Descriptor_Format_t;
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/** \brief Audio class-specific Format Descriptor (USB-IF naming conventions).
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*
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* Type define for an Audio class-specific audio format descriptor. This is used to give the host full details
|
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|
* about the number of channels, the sample resolution, acceptable sample frequencies and encoding method used
|
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* in the device's audio streams. See the USB Audio specification for more details.
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*
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* \see \ref USB_Audio_Descriptor_Format_t for the version of this type with non-standard LUFA specific
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* element names.
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*/
|
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typedef struct
|
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{
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uint8_t bLength; /**< Size of the descriptor, in bytes. */
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uint8_t bDescriptorType; /**< Type of the descriptor, either a value in \ref USB_DescriptorTypes_t or a value
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|
* given by the specific class.
|
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*/
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uint8_t FormatType; /**< Format of the audio stream, see Audio Device Formats specification. */
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uint8_t Channels; /**< Total number of discrete channels in the stream. */
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uint8_t bDescriptorSubtype; /**< Sub type value used to distinguish between audio class-specific descriptors. */
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uint8_t bFormatType; /**< Format of the audio stream, see Audio Device Formats specification. */
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uint8_t bNrChannels; /**< Total number of discrete channels in the stream. */
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uint8_t SubFrameSize; /**< Size in bytes of each channel's sample data in the stream. */
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uint8_t BitResolution; /**< Bits of resolution of each channel's samples in the stream. */
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|
uint8_t bSubFrameSize; /**< Size in bytes of each channel's sample data in the stream. */
|
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|
uint8_t bBitResolution; /**< Bits of resolution of each channel's samples in the stream. */
|
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|
uint8_t SampleFrequencyType; /**< Total number of sample frequencies supported by the device. */
|
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|
|
USB_Audio_SampleFreq_t SampleFrequencies[AUDIO_TOTAL_SAMPLE_RATES]; /**< Sample frequencies supported by the device. */
|
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|
|
|
} USB_Audio_Format_t;
|
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|
|
uint8_t bSampleFrequencyType; /**< Total number of sample frequencies supported by the device. */
|
|
|
|
|
uint8_t SampleFrequencies[AUDIO_TOTAL_SAMPLE_RATES * 3]; /**< Sample frequencies supported by the device (must be 24-bit). */
|
|
|
|
|
} USB_Audio_StdDescriptor_Format_t;
|
|
|
|
|
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|
|
|
|
/** \brief Audio class-specific Streaming Endpoint Descriptor.
|
|
|
|
|
/** \brief Audio class-specific Streaming Endpoint Descriptor (LUFA naming conventions).
|
|
|
|
|
*
|
|
|
|
|
* Type define for an Audio class-specific endpoint descriptor. This contains a regular endpoint
|
|
|
|
|
* descriptor with a few Audio-class-specific extensions. See the USB Audio specification for more details.
|
|
|
|
|
*
|
|
|
|
|
* \see \ref USB_Audio_StdDescriptor_StreamEndpoint_Std_t for the version of this type with standard element names.
|
|
|
|
|
*/
|
|
|
|
|
typedef struct
|
|
|
|
|
{
|
|
|
|
|
@ -377,13 +550,46 @@
|
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|
|
|
|
|
|
|
uint8_t Refresh; /**< Always set to zero for Audio class devices. */
|
|
|
|
|
uint8_t SyncEndpointNumber; /**< Endpoint address to send synchronization information to, if needed (zero otherwise). */
|
|
|
|
|
} USB_Audio_StreamEndpoint_Std_t;
|
|
|
|
|
} USB_Audio_Descriptor_StreamEndpoint_Std_t;
|
|
|
|
|
|
|
|
|
|
/** \brief Audio class-specific Streaming Endpoint Descriptor (USB-IF naming conventions).
|
|
|
|
|
*
|
|
|
|
|
* Type define for an Audio class-specific endpoint descriptor. This contains a regular endpoint
|
|
|
|
|
* descriptor with a few Audio-class-specific extensions. See the USB Audio specification for more details.
|
|
|
|
|
*
|
|
|
|
|
* \see \ref USB_Audio_Descriptor_StreamEndpoint_Std_t for the version of this type with non-standard LUFA specific
|
|
|
|
|
* element names.
|
|
|
|
|
*/
|
|
|
|
|
typedef struct
|
|
|
|
|
{
|
|
|
|
|
uint8_t bLength; /**< Size of the descriptor, in bytes. */
|
|
|
|
|
uint8_t bDescriptorType; /**< Type of the descriptor, either a value in \ref USB_DescriptorTypes_t or a
|
|
|
|
|
* value given by the specific class.
|
|
|
|
|
*/
|
|
|
|
|
uint8_t bEndpointAddress; /**< Logical address of the endpoint within the device for the current
|
|
|
|
|
* configuration, including direction mask.
|
|
|
|
|
*/
|
|
|
|
|
uint8_t bmAttributes; /**< Endpoint attributes, comprised of a mask of the endpoint type (EP_TYPE_*)
|
|
|
|
|
* and attributes (ENDPOINT_ATTR_*) masks.
|
|
|
|
|
*/
|
|
|
|
|
uint16_t wMaxPacketSize; /**< Size of the endpoint bank, in bytes. This indicates the maximum packet size
|
|
|
|
|
* that the endpoint can receive at a time.
|
|
|
|
|
*/
|
|
|
|
|
uint8_t bInterval; /**< Polling interval in milliseconds for the endpoint if it is an INTERRUPT or
|
|
|
|
|
* ISOCHRONOUS type.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
uint8_t bRefresh; /**< Always set to zero for Audio class devices. */
|
|
|
|
|
uint8_t bSynchAddress; /**< Endpoint address to send synchronization information to, if needed (zero otherwise). */
|
|
|
|
|
} USB_Audio_StdDescriptor_StreamEndpoint_Std_t;
|
|
|
|
|
|
|
|
|
|
/** \brief Audio class-specific Extended Endpoint Descriptor.
|
|
|
|
|
/** \brief Audio class-specific Extended Endpoint Descriptor (LUFA naming conventions).
|
|
|
|
|
*
|
|
|
|
|
* Type define for an Audio class-specific extended endpoint descriptor. This contains extra information
|
|
|
|
|
* on the usage of endpoints used to stream audio in and out of the USB Audio device, and follows an Audio
|
|
|
|
|
* class-specific extended endpoint descriptor. See the USB Audio specification for more details.
|
|
|
|
|
*
|
|
|
|
|
* \see \ref USB_Audio_StdDescriptor_StreamEndpoint_Spc_t for the version of this type with standard element names.
|
|
|
|
|
*/
|
|
|
|
|
typedef struct
|
|
|
|
|
{
|
|
|
|
|
@ -394,8 +600,32 @@
|
|
|
|
|
|
|
|
|
|
uint8_t LockDelayUnits; /**< Units used for the LockDelay field, see Audio class specification. */
|
|
|
|
|
uint16_t LockDelay; /**< Time required to internally lock endpoint's internal clock recovery circuitry. */
|
|
|
|
|
} USB_Audio_StreamEndpoint_Spc_t;
|
|
|
|
|
} USB_Audio_Descriptor_StreamEndpoint_Spc_t;
|
|
|
|
|
|
|
|
|
|
/** \brief Audio class-specific Extended Endpoint Descriptor (USB-IF naming conventions).
|
|
|
|
|
*
|
|
|
|
|
* Type define for an Audio class-specific extended endpoint descriptor. This contains extra information
|
|
|
|
|
* on the usage of endpoints used to stream audio in and out of the USB Audio device, and follows an Audio
|
|
|
|
|
* class-specific extended endpoint descriptor. See the USB Audio specification for more details.
|
|
|
|
|
*
|
|
|
|
|
* \see \ref USB_Audio_Descriptor_StreamEndpoint_Spc_t for the version of this type with non-standard LUFA specific
|
|
|
|
|
* element names.
|
|
|
|
|
*/
|
|
|
|
|
typedef struct
|
|
|
|
|
{
|
|
|
|
|
uint8_t bLength; /**< Size of the descriptor, in bytes. */
|
|
|
|
|
uint8_t bDescriptorType; /**< Type of the descriptor, either a value in \ref USB_DescriptorTypes_t or a value
|
|
|
|
|
* given by the specific class.
|
|
|
|
|
*/
|
|
|
|
|
|
|
|
|
|
uint8_t bDescriptorSubtype; /**< Sub type value used to distinguish between audio class-specific descriptors. */
|
|
|
|
|
|
|
|
|
|
uint8_t bmAttributes; /**< Audio class-specific endpoint attributes, such as ACCEPTS_SMALL_PACKETS. */
|
|
|
|
|
|
|
|
|
|
uint8_t bLockDelayUnits; /**< Units used for the LockDelay field, see Audio class specification. */
|
|
|
|
|
uint16_t wLockDelay; /**< Time required to internally lock endpoint's internal clock recovery circuitry. */
|
|
|
|
|
} USB_Audio_StdDescriptor_StreamEndpoint_Spc_t;
|
|
|
|
|
|
|
|
|
|
/* Disable C linkage for C++ Compilers: */
|
|
|
|
|
#if defined(__cplusplus)
|
|
|
|
|
}
|
|
|
|
|
|
Dean Camera
14 years ago