uint8_t ChannelStrIndex; /**< Index of a string descriptor describing this channel within the device. */
uint8_t TerminalStrIndex; /**< Index of a string descriptor describing this descriptor within the device. */
- } USB_Audio_Descriptor_InputTerminal_t;
+ } ATTR_PACKED USB_Audio_Descriptor_InputTerminal_t;
/** \brief Audio class-specific Input Terminal Descriptor (USB-IF naming conventions).
*
uint8_t iChannelNames; /**< Index of a string descriptor describing this channel within the device. */
uint8_t iTerminal; /**< Index of a string descriptor describing this descriptor within the device. */
- } USB_Audio_StdDescriptor_InputTerminal_t;
+ } ATTR_PACKED USB_Audio_StdDescriptor_InputTerminal_t;
/** \brief Audio class-specific Output Terminal Descriptor (LUFA naming conventions).
*
uint8_t SourceID; /**< ID value of the unit this terminal's audio is sourced from. */
uint8_t TerminalStrIndex; /**< Index of a string descriptor describing this descriptor within the device. */
- } USB_Audio_Descriptor_OutputTerminal_t;
+ } ATTR_PACKED USB_Audio_Descriptor_OutputTerminal_t;
/** \brief Audio class-specific Output Terminal Descriptor (USB-IF naming conventions).
*
uint8_t bSourceID; /**< ID value of the unit this terminal's audio is sourced from. */
uint8_t iTerminal; /**< Index of a string descriptor describing this descriptor within the device. */
- } USB_Audio_StdDescriptor_OutputTerminal_t;
+ } ATTR_PACKED USB_Audio_StdDescriptor_OutputTerminal_t;
/** \brief Audio class-specific Interface Descriptor (LUFA naming conventions).
*
uint8_t InCollection; /**< Total number of Audio Streaming interfaces linked to this Audio Control interface (must be 1). */
uint8_t InterfaceNumber; /**< Interface number of the associated Audio Streaming interface. */
- } USB_Audio_Descriptor_Interface_AC_t;
+ } ATTR_PACKED USB_Audio_Descriptor_Interface_AC_t;
/** \brief Audio class-specific Interface Descriptor (USB-IF naming conventions).
*
uint8_t bInCollection; /**< Total number of Audio Streaming interfaces linked to this Audio Control interface (must be 1). */
uint8_t bInterfaceNumbers; /**< Interface number of the associated Audio Streaming interface. */
- } USB_Audio_StdDescriptor_Interface_AC_t;
+ } ATTR_PACKED USB_Audio_StdDescriptor_Interface_AC_t;
/** \brief Audio class-specific Feature Unit Descriptor (LUFA naming conventions).
*
uint8_t ChannelControls[3]; /**< Feature masks for the control channel, and each separate audio channel. */
uint8_t FeatureUnitStrIndex; /**< Index of a string descriptor describing this descriptor within the device. */
- } USB_Audio_Descriptor_FeatureUnit_t;
+ } ATTR_PACKED USB_Audio_Descriptor_FeatureUnit_t;
/** \brief Audio class-specific Feature Unit Descriptor (USB-IF naming conventions).
*
uint8_t bmaControls[3]; /**< Feature masks for the control channel, and each separate audio channel. */
uint8_t iFeature; /**< Index of a string descriptor describing this descriptor within the device. */
- } USB_Audio_StdDescriptor_FeatureUnit_t;
+ } ATTR_PACKED USB_Audio_StdDescriptor_FeatureUnit_t;
/** \brief Audio class-specific Streaming Audio Interface Descriptor (LUFA naming conventions).
*
uint8_t FrameDelay; /**< Delay in frames resulting from the complete sample processing from input to output. */
uint16_t AudioFormat; /**< Format of the audio stream, see Audio Device Formats specification. */
- } USB_Audio_Descriptor_Interface_AS_t;
+ } ATTR_PACKED USB_Audio_Descriptor_Interface_AS_t;
/** \brief Audio class-specific Streaming Audio Interface Descriptor (USB-IF naming conventions).
*
uint8_t bDelay; /**< Delay in frames resulting from the complete sample processing from input to output. */
uint16_t wFormatTag; /**< Format of the audio stream, see Audio Device Formats specification. */
- } USB_Audio_StdDescriptor_Interface_AS_t;
+ } ATTR_PACKED USB_Audio_StdDescriptor_Interface_AS_t;
/** \brief 24-Bit Audio Frequency Structure.
*
uint8_t Byte1; /**< Lowest 8 bits of the 24-bit value. */
uint8_t Byte2; /**< Middle 8 bits of the 24-bit value. */
uint8_t Byte3; /**< Upper 8 bits of the 24-bit value. */
- } USB_Audio_SampleFreq_t;
+ } ATTR_PACKED USB_Audio_SampleFreq_t;
/** \brief Audio class-specific Format Descriptor (LUFA naming conventions).
*
uint8_t SampleFrequencyType; /**< Total number of sample frequencies supported by the device. */
USB_Audio_SampleFreq_t SampleFrequencies[AUDIO_TOTAL_SAMPLE_RATES]; /**< Sample frequencies supported by the device (must be 24-bit). */
- } USB_Audio_Descriptor_Format_t;
+ } ATTR_PACKED USB_Audio_Descriptor_Format_t;
/** \brief Audio class-specific Format Descriptor (USB-IF naming conventions).
*
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;
+ } ATTR_PACKED USB_Audio_StdDescriptor_Format_t;
/** \brief Audio class-specific Streaming Endpoint Descriptor (LUFA naming conventions).
*
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_Descriptor_StreamEndpoint_Std_t;
+ } ATTR_PACKED USB_Audio_Descriptor_StreamEndpoint_Std_t;
/** \brief Audio class-specific Streaming Endpoint Descriptor (USB-IF naming conventions).
*
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;
+ } ATTR_PACKED USB_Audio_StdDescriptor_StreamEndpoint_Std_t;
/** \brief Audio class-specific Extended Endpoint Descriptor (LUFA naming conventions).
*
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_Descriptor_StreamEndpoint_Spc_t;
+ } ATTR_PACKED USB_Audio_Descriptor_StreamEndpoint_Spc_t;
/** \brief Audio class-specific Extended Endpoint Descriptor (USB-IF naming conventions).
*
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;
+ } ATTR_PACKED USB_Audio_StdDescriptor_StreamEndpoint_Spc_t;
/* Disable C linkage for C++ Compilers: */
#if defined(__cplusplus)
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