Add svn:eol-style property to source files, so that the line endings are correctly converted to the target system's native end of line style.

1 files changed, 318 insertions, 318 deletions

diff --git a/Demos/Device/LowLevel/AudioInput/Descriptors.h b/Demos/Device/LowLevel/AudioInput/Descriptors.h
index d9048ab01..443cd1a10 100644
--- a/Demos/Device/LowLevel/AudioInput/Descriptors.h
+++ b/Demos/Device/LowLevel/AudioInput/Descriptors.h
@@ -1,318 +1,318 @@
-/*

-             LUFA Library

-     Copyright (C) Dean Camera, 2010.

-              

-  dean [at] fourwalledcubicle [dot] com

-      www.fourwalledcubicle.com

-*/

-

-/*

-  Copyright 2010  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.

-*/

-

-/** \file

- *

- *  Header file for Descriptors.c.

- */

- 

-#ifndef _DESCRIPTORS_H_

-#define _DESCRIPTORS_H_

-

-	/* Includes: */

-		#include <LUFA/Drivers/USB/USB.h>

-

-		#include <avr/pgmspace.h>

-

-	/* Macros: */

-		/** Descriptor header constant to indicate a Audio class interface descriptor. */

-		#define DTYPE_AudioInterface         0x24

-

-		/** Descriptor header constant to indicate a Audio class endpoint descriptor. */

-		#define DTYPE_AudioEndpoint          0x25

-

-		/** Audio class descriptor subtype value for a Audio class specific header descriptor. */

-		#define DSUBTYPE_Header              0x01

-

-		/** Audio class descriptor subtype value for an Output Terminal Audio class specific descriptor. */

-		#define DSUBTYPE_InputTerminal       0x02

-

-		/** Audio class descriptor subtype value for an Input Terminal Audio class specific descriptor. */

-		#define DSUBTYPE_OutputTerminal      0x03

-

-		/** Audio class descriptor subtype value for a Feature Unit Audio class specific descriptor. */

-		#define DSUBTYPE_FeatureUnit         0x06

-

-		/** Audio class descriptor subtype value for a general Audio class specific descriptor. */

-		#define DSUBTYPE_General             0x01

-

-		/** Audio class descriptor subtype value for an Audio class specific descriptor indicating the format of an audio stream. */

-		#define DSUBTYPE_Format              0x02

-		

-		//@{

-		/** Supported channel mask for an Audio class terminal descriptor. See the Audio class specification for more details. */

-

-		#define CHANNEL_LEFT_FRONT           (1 << 0)

-		#define CHANNEL_RIGHT_FRONT          (1 << 1)

-		#define CHANNEL_CENTER_FRONT         (1 << 2)

-		#define CHANNEL_LOW_FREQ_ENHANCE     (1 << 3)

-		#define CHANNEL_LEFT_SURROUND        (1 << 4)

-		#define CHANNEL_RIGHT_SURROUND       (1 << 5)

-		#define CHANNEL_LEFT_OF_CENTER       (1 << 6)

-		#define CHANNEL_RIGHT_OF_CENTER      (1 << 7)

-		#define CHANNEL_SURROUND             (1 << 8)

-		#define CHANNEL_SIDE_LEFT            (1 << 9)

-		#define CHANNEL_SIDE_RIGHT           (1 << 10)

-		#define CHANNEL_TOP                  (1 << 11)

-		//@}

-

-		//@{

-		/** Supported feature mask for an Audio class feature unit descriptor. See the Audio class specification for more details. */

-

-		#define FEATURE_MUTE                 (1 << 0)

-		#define FEATURE_VOLUME               (1 << 1)

-		#define FEATURE_BASS                 (1 << 2)

-		#define FEATURE_MID                  (1 << 3)

-		#define FEATURE_TREBLE               (1 << 4)

-		#define FEATURE_GRAPHIC_EQUALIZER    (1 << 5)

-		#define FEATURE_AUTOMATIC_GAIN       (1 << 6)

-		#define FEATURE_DELAY                (1 << 7)

-		#define FEATURE_BASS_BOOST           (1 << 8)

-		#define FEATURE_BASS_LOUDNESS        (1 << 9)

-		//@}

-

-		//@{

-		/** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */

-		

-		#define TERMINAL_UNDEFINED           0x0100

-		#define TERMINAL_STREAMING           0x0101

-		#define TERMINAL_VENDOR              0x01FF

-		#define TERMINAL_IN_UNDEFINED        0x0200

-		#define TERMINAL_IN_MIC              0x0201

-		#define TERMINAL_IN_DESKTOP_MIC      0x0202

-		#define TERMINAL_IN_PERSONAL_MIC     0x0203

-		#define TERMINAL_IN_OMNIDIR_MIC      0x0204

-		#define TERMINAL_IN_MIC_ARRAY        0x0205

-		#define TERMINAL_IN_PROCESSING_MIC   0x0206

-		#define TERMINAL_IN_OUT_UNDEFINED    0x0300

-		#define TERMINAL_OUT_SPEAKER         0x0301

-		#define TERMINAL_OUT_HEADPHONES      0x0302

-		#define TERMINAL_OUT_HEAD_MOUNTED    0x0303

-		#define TERMINAL_OUT_DESKTOP         0x0304

-		#define TERMINAL_OUT_ROOM            0x0305

-		#define TERMINAL_OUT_COMMUNICATION   0x0306

-		#define TERMINAL_OUT_LOWFREQ         0x0307

-		//@}

-

-		/** Convenience macro, to fill a 24-bit AudioSampleFreq_t structure with the given sample rate as a 24-bit number.

-		 *

-		 *  \param[in] freq  Required audio sampling frequency in HZ

-		 */

-		#define SAMPLE_FREQ(freq)  {LowWord: ((uint32_t)(freq) & 0x00FFFF), HighByte: (((uint32_t)(freq) >> 16) & 0x0000FF)}

-		

-		/** Mask for the attributes parameter of an Audio class specific Endpoint descriptor, indicating that the endpoint

-		 *  accepts only filled endpoint packets of audio samples.

-		 */

-		#define EP_ACCEPTS_ONLY_FULL_PACKETS (1 << 7)

-

-		/** Mask for the attributes parameter of an Audio class specific Endpoint descriptor, indicating that the endpoint

-		 *  will accept partially filled endpoint packets of audio samples.

-		 */

-		#define EP_ACCEPTS_SMALL_PACKETS     (0 << 7)

-

-		/** Endpoint number of the Audio isochronous streaming data endpoint. */

-		#define AUDIO_STREAM_EPNUM           1

-		

-		/** Endpoint size in bytes of the Audio isochronous streaming data endpoint. The Windows audio stack requires

-		 *  at least 192 bytes for correct output, thus the smaller 128 byte maximum endpoint size on some of the smaller

-		 *  USB AVR models will result in unavoidable distorted output.

-		 */

-		#define AUDIO_STREAM_EPSIZE          ENDPOINT_MAX_SIZE(AUDIO_STREAM_EPNUM)

-		

-		/** Sample frequency of the data being transmitted through the streaming endpoint. */

-		#define AUDIO_SAMPLE_FREQUENCY       48000

-		

-	/* Type Defines: */

-		/** Type define for an Audio class specific interface descriptor. This follows a regular interface descriptor to

-		 *  supply extra information about the audio device's layout to the host. See the USB Audio specification for more

-		 *  details.

-		 */

-		typedef struct

-		{

-			USB_Descriptor_Header_t   Header; /**< Regular descriptor header containing the descriptor's type and length */

-			uint8_t                   Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */

-

-			uint16_t                  ACSpecification; /**< Binary coded decimal value, indicating the supported Audio Class specification version */

-			uint16_t                  TotalLength; /**< Total length of the Audio class specific descriptors, including this descriptor */

-			

-			uint8_t                   InCollection; /**< Total number of audio class interfaces within this device */

-			uint8_t                   InterfaceNumbers[1]; /**< Interface numbers of each audio interface */

-		} USB_Audio_Interface_AC_t;

-		

-		/** Type define for an Audio class specific Feature Unit descriptor. This indicates to the host what features

-		 *  are present in the device's audio stream for basic control, such as per-channel volume. See the USB Audio

-		 *  specification for more details.

-		 */

-		typedef struct

-		{

-			USB_Descriptor_Header_t   Header; /**< Regular descriptor header containing the descriptor's type and length */

-			uint8_t                   Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */

-			

-			uint8_t                   UnitID; /**< ID value of this feature unit - must be a unique value within the device */

-			uint8_t                   SourceID; /**< Source ID value of the audio source input into this feature unit */

-			

-			uint8_t                   ControlSize; /**< Size of each element in the ChanelControlls array */

-			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_FeatureUnit_t;

-

-		/** Type define for an Audio class specific input terminal descriptor. This indicates to the host that the device

-		 *  contains an input audio source, either from a physical terminal on the device, or a logical terminal (for example,

-		 *  a USB endpoint). See the USB Audio specification for more details.

-		 */

-		typedef struct

-		{

-			USB_Descriptor_Header_t   Header; /**< Regular descriptor header containing the descriptor's type and length */

-			uint8_t                   Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */

-		

-			uint8_t                   TerminalID; /**< ID value of this terminal unit - must be a unique value within the device */

-			uint16_t                  TerminalType; /**< Type of terminal, a TERMINAL_* mask */

-			uint8_t                   AssociatedOutputTerminal; /**< ID of associated output terminal, for physically grouped terminals

-			                                                     *   such as the speaker and microphone of a phone handset

-			                                                     */

-			uint8_t                   TotalChannels; /**< Total number of separate audio channels within this interface (right, left, etc.) */

-			uint16_t                  ChannelConfig; /**< CHANNEL_* masks indicating what channel layout is supported by this terminal */

-			

-			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_InputTerminal_t;

-

-		/** Type define for an Audio class specific output terminal descriptor. This indicates to the host that the device

-		 *  contains an output audio sink, either to a physical terminal on the device, or a logical terminal (for example,

-		 *  a USB endpoint). See the USB Audio specification for more details.

-		 */

-		typedef struct

-		{

-			USB_Descriptor_Header_t   Header; /**< Regular descriptor header containing the descriptor's type and length */

-			uint8_t                   Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */

-		

-			uint8_t                   TerminalID; /**< ID value of this terminal unit - must be a unique value within the device */

-			uint16_t                  TerminalType; /**< Type of terminal, a TERMINAL_* mask */

-			uint8_t                   AssociatedInputTerminal; /**< ID of associated input terminal, for physically grouped terminals

-			                                                    *   such as the speaker and microphone of a phone handset

-			                                                    */

-			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_OutputTerminal_t;

-		

-		/** Type define for an Audio class specific streaming interface descriptor. This indicates to the host

-		 *  how audio streams within the device are formatted. See the USB Audio specification for more details.

-		 */

-		typedef struct

-		{

-			USB_Descriptor_Header_t   Header; /**< Regular descriptor header containing the descriptor's type and length */

-			uint8_t                   Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */

-			

-			uint8_t                   TerminalLink; /**< ID value of the output terminal this descriptor is describing */

-			

-			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_Interface_AS_t;

-		

-		/** Type define for a 24bit audio sample frequency structure. GCC does not contain a built in 24bit datatype,

-		 *  this this structure is used to build up the value instead. Fill this structure with the SAMPLE_FREQ() macro.

-		 */

-		typedef struct

-		{

-			uint16_t                  LowWord; /**< Low 16 bits of the 24-bit value */

-			uint8_t                   HighByte; /**< Upper 8 bits of the 24-bit value */

-		} Audio_SampleFreq_t;

-

-		/** Type define for an Audio class specific audio format descriptor. This is used to give the host full details

-		 *  about the number of channels, the sample resolution, acceptable sample frequencies and encoding method used

-		 *  in the device's audio streams. See the USB Audio specification for more details.

-		 */

-		typedef struct

-		{

-			USB_Descriptor_Header_t   Header; /**< Regular descriptor header containing the descriptor's type and length */

-			uint8_t                   Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */

-

-			uint8_t                   FormatType; /**< Format of the audio stream, see Audio Device Formats specification */

-			uint8_t                   Channels; /**< Total number of discrete channels in the stream */

-			

-			uint8_t                   SubFrameSize; /**< Size in bytes of each channel's sample data in the stream */

-			uint8_t                   BitResolution; /**< Bits of resolution of each channel's samples in the stream */

-

-			uint8_t                   SampleFrequencyType; /**< Total number of sample frequencies supported by the device */			

-			Audio_SampleFreq_t        SampleFrequencies[1]; /**< Sample frequencies supported by the device */

-		} USB_Audio_Format_t;

-		

-		/** 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.

-		 */

-		typedef struct

-		{

-			USB_Descriptor_Endpoint_t Endpoint; /**< Standard endpoint descriptor describing the audio endpoint */

-

-			uint8_t                   Refresh; /**< Always set to zero */

-			uint8_t                   SyncEndpointNumber; /**< Endpoint address to send synchronization information to, if needed (zero otherwise) */

-		} USB_Audio_StreamEndpoint_Std_t;

-					

-		/** 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.

-		 */

-		typedef struct

-		{

-			USB_Descriptor_Header_t   Header; /**< Regular descriptor header containing the descriptor's type and length */

-			uint8_t                   Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */

-			

-			uint8_t                   Attributes; /**< Audio class specific endpoint attributes, such as ACCEPTS_SMALL_PACKETS */

-

-			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;

-		

-		/** Type define for the device configuration descriptor structure. This must be defined in the

-		 *  application code, as the configuration descriptor contains several sub-descriptors which

-		 *  vary between devices, and which describe the device's usage to the host.

-		 */

-		typedef struct

-		{

-			USB_Descriptor_Configuration_Header_t Config;

-			USB_Descriptor_Interface_t            Audio_ControlInterface;

-			USB_Audio_Interface_AC_t              Audio_ControlInterface_SPC;

-			USB_Audio_InputTerminal_t             Audio_InputTerminal;

-			USB_Audio_OutputTerminal_t            Audio_OutputTerminal;

-			USB_Descriptor_Interface_t            Audio_StreamInterface_Alt0;

-			USB_Descriptor_Interface_t            Audio_StreamInterface_Alt1;

-			USB_Audio_Interface_AS_t              Audio_StreamInterface_SPC;

-			USB_Audio_Format_t                    Audio_AudioFormat;

-			USB_Audio_StreamEndpoint_Std_t        Audio_StreamEndpoint;

-			USB_Audio_StreamEndpoint_Spc_t        Audio_StreamEndpoint_SPC;

-		} USB_Descriptor_Configuration_t;

-		

-	/* Function Prototypes: */

-		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue, const uint8_t wIndex, void** const DescriptorAddress)

-		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);

-

-#endif

+/*
+             LUFA Library
+     Copyright (C) Dean Camera, 2010.
+              
+  dean [at] fourwalledcubicle [dot] com
+      www.fourwalledcubicle.com
+*/
+
+/*
+  Copyright 2010  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.
+*/
+
+/** \file
+ *
+ *  Header file for Descriptors.c.
+ */
+ 
+#ifndef _DESCRIPTORS_H_
+#define _DESCRIPTORS_H_
+
+	/* Includes: */
+		#include <LUFA/Drivers/USB/USB.h>
+
+		#include <avr/pgmspace.h>
+
+	/* Macros: */
+		/** Descriptor header constant to indicate a Audio class interface descriptor. */
+		#define DTYPE_AudioInterface         0x24
+
+		/** Descriptor header constant to indicate a Audio class endpoint descriptor. */
+		#define DTYPE_AudioEndpoint          0x25
+
+		/** Audio class descriptor subtype value for a Audio class specific header descriptor. */
+		#define DSUBTYPE_Header              0x01
+
+		/** Audio class descriptor subtype value for an Output Terminal Audio class specific descriptor. */
+		#define DSUBTYPE_InputTerminal       0x02
+
+		/** Audio class descriptor subtype value for an Input Terminal Audio class specific descriptor. */
+		#define DSUBTYPE_OutputTerminal      0x03
+
+		/** Audio class descriptor subtype value for a Feature Unit Audio class specific descriptor. */
+		#define DSUBTYPE_FeatureUnit         0x06
+
+		/** Audio class descriptor subtype value for a general Audio class specific descriptor. */
+		#define DSUBTYPE_General             0x01
+
+		/** Audio class descriptor subtype value for an Audio class specific descriptor indicating the format of an audio stream. */
+		#define DSUBTYPE_Format              0x02
+		
+		//@{
+		/** Supported channel mask for an Audio class terminal descriptor. See the Audio class specification for more details. */
+
+		#define CHANNEL_LEFT_FRONT           (1 << 0)
+		#define CHANNEL_RIGHT_FRONT          (1 << 1)
+		#define CHANNEL_CENTER_FRONT         (1 << 2)
+		#define CHANNEL_LOW_FREQ_ENHANCE     (1 << 3)
+		#define CHANNEL_LEFT_SURROUND        (1 << 4)
+		#define CHANNEL_RIGHT_SURROUND       (1 << 5)
+		#define CHANNEL_LEFT_OF_CENTER       (1 << 6)
+		#define CHANNEL_RIGHT_OF_CENTER      (1 << 7)
+		#define CHANNEL_SURROUND             (1 << 8)
+		#define CHANNEL_SIDE_LEFT            (1 << 9)
+		#define CHANNEL_SIDE_RIGHT           (1 << 10)
+		#define CHANNEL_TOP                  (1 << 11)
+		//@}
+
+		//@{
+		/** Supported feature mask for an Audio class feature unit descriptor. See the Audio class specification for more details. */
+
+		#define FEATURE_MUTE                 (1 << 0)
+		#define FEATURE_VOLUME               (1 << 1)
+		#define FEATURE_BASS                 (1 << 2)
+		#define FEATURE_MID                  (1 << 3)
+		#define FEATURE_TREBLE               (1 << 4)
+		#define FEATURE_GRAPHIC_EQUALIZER    (1 << 5)
+		#define FEATURE_AUTOMATIC_GAIN       (1 << 6)
+		#define FEATURE_DELAY                (1 << 7)
+		#define FEATURE_BASS_BOOST           (1 << 8)
+		#define FEATURE_BASS_LOUDNESS        (1 << 9)
+		//@}
+
+		//@{
+		/** Terminal type constant for an Audio class terminal descriptor. See the Audio class specification for more details. */
+		
+		#define TERMINAL_UNDEFINED           0x0100
+		#define TERMINAL_STREAMING           0x0101
+		#define TERMINAL_VENDOR              0x01FF
+		#define TERMINAL_IN_UNDEFINED        0x0200
+		#define TERMINAL_IN_MIC              0x0201
+		#define TERMINAL_IN_DESKTOP_MIC      0x0202
+		#define TERMINAL_IN_PERSONAL_MIC     0x0203
+		#define TERMINAL_IN_OMNIDIR_MIC      0x0204
+		#define TERMINAL_IN_MIC_ARRAY        0x0205
+		#define TERMINAL_IN_PROCESSING_MIC   0x0206
+		#define TERMINAL_IN_OUT_UNDEFINED    0x0300
+		#define TERMINAL_OUT_SPEAKER         0x0301
+		#define TERMINAL_OUT_HEADPHONES      0x0302
+		#define TERMINAL_OUT_HEAD_MOUNTED    0x0303
+		#define TERMINAL_OUT_DESKTOP         0x0304
+		#define TERMINAL_OUT_ROOM            0x0305
+		#define TERMINAL_OUT_COMMUNICATION   0x0306
+		#define TERMINAL_OUT_LOWFREQ         0x0307
+		//@}
+
+		/** Convenience macro, to fill a 24-bit AudioSampleFreq_t structure with the given sample rate as a 24-bit number.
+		 *
+		 *  \param[in] freq  Required audio sampling frequency in HZ
+		 */
+		#define SAMPLE_FREQ(freq)  {LowWord: ((uint32_t)(freq) & 0x00FFFF), HighByte: (((uint32_t)(freq) >> 16) & 0x0000FF)}
+		
+		/** Mask for the attributes parameter of an Audio class specific Endpoint descriptor, indicating that the endpoint
+		 *  accepts only filled endpoint packets of audio samples.
+		 */
+		#define EP_ACCEPTS_ONLY_FULL_PACKETS (1 << 7)
+
+		/** Mask for the attributes parameter of an Audio class specific Endpoint descriptor, indicating that the endpoint
+		 *  will accept partially filled endpoint packets of audio samples.
+		 */
+		#define EP_ACCEPTS_SMALL_PACKETS     (0 << 7)
+
+		/** Endpoint number of the Audio isochronous streaming data endpoint. */
+		#define AUDIO_STREAM_EPNUM           1
+		
+		/** Endpoint size in bytes of the Audio isochronous streaming data endpoint. The Windows audio stack requires
+		 *  at least 192 bytes for correct output, thus the smaller 128 byte maximum endpoint size on some of the smaller
+		 *  USB AVR models will result in unavoidable distorted output.
+		 */
+		#define AUDIO_STREAM_EPSIZE          ENDPOINT_MAX_SIZE(AUDIO_STREAM_EPNUM)
+		
+		/** Sample frequency of the data being transmitted through the streaming endpoint. */
+		#define AUDIO_SAMPLE_FREQUENCY       48000
+		
+	/* Type Defines: */
+		/** Type define for an Audio class specific interface descriptor. This follows a regular interface descriptor to
+		 *  supply extra information about the audio device's layout to the host. See the USB Audio specification for more
+		 *  details.
+		 */
+		typedef struct
+		{
+			USB_Descriptor_Header_t   Header; /**< Regular descriptor header containing the descriptor's type and length */
+			uint8_t                   Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
+
+			uint16_t                  ACSpecification; /**< Binary coded decimal value, indicating the supported Audio Class specification version */
+			uint16_t                  TotalLength; /**< Total length of the Audio class specific descriptors, including this descriptor */
+			
+			uint8_t                   InCollection; /**< Total number of audio class interfaces within this device */
+			uint8_t                   InterfaceNumbers[1]; /**< Interface numbers of each audio interface */
+		} USB_Audio_Interface_AC_t;
+		
+		/** Type define for an Audio class specific Feature Unit descriptor. This indicates to the host what features
+		 *  are present in the device's audio stream for basic control, such as per-channel volume. See the USB Audio
+		 *  specification for more details.
+		 */
+		typedef struct
+		{
+			USB_Descriptor_Header_t   Header; /**< Regular descriptor header containing the descriptor's type and length */
+			uint8_t                   Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
+			
+			uint8_t                   UnitID; /**< ID value of this feature unit - must be a unique value within the device */
+			uint8_t                   SourceID; /**< Source ID value of the audio source input into this feature unit */
+			
+			uint8_t                   ControlSize; /**< Size of each element in the ChanelControlls array */
+			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_FeatureUnit_t;
+
+		/** Type define for an Audio class specific input terminal descriptor. This indicates to the host that the device
+		 *  contains an input audio source, either from a physical terminal on the device, or a logical terminal (for example,
+		 *  a USB endpoint). See the USB Audio specification for more details.
+		 */
+		typedef struct
+		{
+			USB_Descriptor_Header_t   Header; /**< Regular descriptor header containing the descriptor's type and length */
+			uint8_t                   Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
+		
+			uint8_t                   TerminalID; /**< ID value of this terminal unit - must be a unique value within the device */
+			uint16_t                  TerminalType; /**< Type of terminal, a TERMINAL_* mask */
+			uint8_t                   AssociatedOutputTerminal; /**< ID of associated output terminal, for physically grouped terminals
+			                                                     *   such as the speaker and microphone of a phone handset
+			                                                     */
+			uint8_t                   TotalChannels; /**< Total number of separate audio channels within this interface (right, left, etc.) */
+			uint16_t                  ChannelConfig; /**< CHANNEL_* masks indicating what channel layout is supported by this terminal */
+			
+			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_InputTerminal_t;
+
+		/** Type define for an Audio class specific output terminal descriptor. This indicates to the host that the device
+		 *  contains an output audio sink, either to a physical terminal on the device, or a logical terminal (for example,
+		 *  a USB endpoint). See the USB Audio specification for more details.
+		 */
+		typedef struct
+		{
+			USB_Descriptor_Header_t   Header; /**< Regular descriptor header containing the descriptor's type and length */
+			uint8_t                   Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
+		
+			uint8_t                   TerminalID; /**< ID value of this terminal unit - must be a unique value within the device */
+			uint16_t                  TerminalType; /**< Type of terminal, a TERMINAL_* mask */
+			uint8_t                   AssociatedInputTerminal; /**< ID of associated input terminal, for physically grouped terminals
+			                                                    *   such as the speaker and microphone of a phone handset
+			                                                    */
+			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_OutputTerminal_t;
+		
+		/** Type define for an Audio class specific streaming interface descriptor. This indicates to the host
+		 *  how audio streams within the device are formatted. See the USB Audio specification for more details.
+		 */
+		typedef struct
+		{
+			USB_Descriptor_Header_t   Header; /**< Regular descriptor header containing the descriptor's type and length */
+			uint8_t                   Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
+			
+			uint8_t                   TerminalLink; /**< ID value of the output terminal this descriptor is describing */
+			
+			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_Interface_AS_t;
+		
+		/** Type define for a 24bit audio sample frequency structure. GCC does not contain a built in 24bit datatype,
+		 *  this this structure is used to build up the value instead. Fill this structure with the SAMPLE_FREQ() macro.
+		 */
+		typedef struct
+		{
+			uint16_t                  LowWord; /**< Low 16 bits of the 24-bit value */
+			uint8_t                   HighByte; /**< Upper 8 bits of the 24-bit value */
+		} Audio_SampleFreq_t;
+
+		/** Type define for an Audio class specific audio format descriptor. This is used to give the host full details
+		 *  about the number of channels, the sample resolution, acceptable sample frequencies and encoding method used
+		 *  in the device's audio streams. See the USB Audio specification for more details.
+		 */
+		typedef struct
+		{
+			USB_Descriptor_Header_t   Header; /**< Regular descriptor header containing the descriptor's type and length */
+			uint8_t                   Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
+
+			uint8_t                   FormatType; /**< Format of the audio stream, see Audio Device Formats specification */
+			uint8_t                   Channels; /**< Total number of discrete channels in the stream */
+			
+			uint8_t                   SubFrameSize; /**< Size in bytes of each channel's sample data in the stream */
+			uint8_t                   BitResolution; /**< Bits of resolution of each channel's samples in the stream */
+
+			uint8_t                   SampleFrequencyType; /**< Total number of sample frequencies supported by the device */			
+			Audio_SampleFreq_t        SampleFrequencies[1]; /**< Sample frequencies supported by the device */
+		} USB_Audio_Format_t;
+		
+		/** 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.
+		 */
+		typedef struct
+		{
+			USB_Descriptor_Endpoint_t Endpoint; /**< Standard endpoint descriptor describing the audio endpoint */
+
+			uint8_t                   Refresh; /**< Always set to zero */
+			uint8_t                   SyncEndpointNumber; /**< Endpoint address to send synchronization information to, if needed (zero otherwise) */
+		} USB_Audio_StreamEndpoint_Std_t;
+					
+		/** 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.
+		 */
+		typedef struct
+		{
+			USB_Descriptor_Header_t   Header; /**< Regular descriptor header containing the descriptor's type and length */
+			uint8_t                   Subtype; /**< Sub type value used to distinguish between audio class specific descriptors */
+			
+			uint8_t                   Attributes; /**< Audio class specific endpoint attributes, such as ACCEPTS_SMALL_PACKETS */
+
+			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;
+		
+		/** Type define for the device configuration descriptor structure. This must be defined in the
+		 *  application code, as the configuration descriptor contains several sub-descriptors which
+		 *  vary between devices, and which describe the device's usage to the host.
+		 */
+		typedef struct
+		{
+			USB_Descriptor_Configuration_Header_t Config;
+			USB_Descriptor_Interface_t            Audio_ControlInterface;
+			USB_Audio_Interface_AC_t              Audio_ControlInterface_SPC;
+			USB_Audio_InputTerminal_t             Audio_InputTerminal;
+			USB_Audio_OutputTerminal_t            Audio_OutputTerminal;
+			USB_Descriptor_Interface_t            Audio_StreamInterface_Alt0;
+			USB_Descriptor_Interface_t            Audio_StreamInterface_Alt1;
+			USB_Audio_Interface_AS_t              Audio_StreamInterface_SPC;
+			USB_Audio_Format_t                    Audio_AudioFormat;
+			USB_Audio_StreamEndpoint_Std_t        Audio_StreamEndpoint;
+			USB_Audio_StreamEndpoint_Spc_t        Audio_StreamEndpoint_SPC;
+		} USB_Descriptor_Configuration_t;
+		
+	/* Function Prototypes: */
+		uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue, const uint8_t wIndex, void** const DescriptorAddress)
+		                                    ATTR_WARN_UNUSED_RESULT ATTR_NON_NULL_PTR_ARG(3);
+
+#endif