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diff --git a/usb/common/audio/AUDStreamingInterfaceDescriptor.h b/usb/common/audio/AUDStreamingInterfaceDescriptor.h
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+++ b/usb/common/audio/AUDStreamingInterfaceDescriptor.h
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+/* ----------------------------------------------------------------------------
+ *         ATMEL Microcontroller Software Support 
+ * ----------------------------------------------------------------------------
+ * Copyright (c) 2008, Atmel Corporation
+ *
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * - Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the disclaimer below.
+ *
+ * Atmel's name may not be used to endorse or promote products derived from
+ * this software without specific prior written permission.
+ *
+ * DISCLAIMER: THIS SOFTWARE IS PROVIDED BY ATMEL "AS IS" AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
+ * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT ARE
+ * DISCLAIMED. IN NO EVENT SHALL ATMEL BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA,
+ * OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
+ * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
+ * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
+ * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ * ----------------------------------------------------------------------------
+ */
+
+//------------------------------------------------------------------------------
+/// \unit
+///
+/// !!!Purpose
+///
+/// Definition of a class for manipulating USB %audio streaming interface
+/// descriptors.
+///
+/// !!!Usage
+///
+/// - For a USB %device:
+///     -# Declare an AUDStreamingInterfaceDescriptor instance as part of the
+///        configuration descriptors returned by a USB %audio %device.
+//------------------------------------------------------------------------------
+
+#ifndef AUDSTREAMINGINTERFACEDESCRIPTOR_H
+#define AUDSTREAMINGINTERFACEDESCRIPTOR_H
+
+//------------------------------------------------------------------------------
+//         Definitions
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+/// \page "USB Audio streaming interface codes"
+///
+/// This page lists the class, subclass and protocol codes that an Audio
+/// Streaming interface should display in its descriptor.
+/// 
+/// !Codes
+/// - AUDStreamingInterfaceDescriptor_CLASS
+/// - AUDStreamingInterfaceDescriptor_SUBCLASS
+/// - AUDStreamingInterfaceDescriptor_PROTOCOL
+
+/// Class code for an USB audio streaming interface.
+#define AUDStreamingInterfaceDescriptor_CLASS               0x01
+
+/// Subclass code for an audio streaming interface.
+#define AUDStreamingInterfaceDescriptor_SUBCLASS            0x02
+
+/// Protocol code for an audio streaming interface.
+#define AUDStreamingInterfaceDescriptor_PROTOCOL            0x00
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+/// \page "USB Audio streaming descriptor subtypes"
+///
+/// This page lists the possible subtypes for audio-specific descriptor appended
+/// to an Audio Streaming interface.
+/// 
+/// !Subtypes
+/// - AUDStreamingInterfaceDescriptor_GENERAL
+/// - AUDStreamingInterfaceDescriptor_FORMATTYPE
+/// - AUDStreamingInterfaceDescriptor_FORMATSPECIFIC
+
+/// General descriptor subtype.
+#define AUDStreamingInterfaceDescriptor_GENERAL             0x01
+
+/// Format type descriptor subtype.
+#define AUDStreamingInterfaceDescriptor_FORMATTYPE          0x02
+
+/// Format specific descriptor subtype.
+#define AUDStreamingInterfaceDescriptor_FORMATSPECIFIC      0x03
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+//         Types
+//------------------------------------------------------------------------------
+
+#ifdef __ICCARM__          // IAR
+#pragma pack(1)            // IAR
+#define __attribute__(...) // IAR
+#endif                     // IAR
+
+//------------------------------------------------------------------------------
+/// Provides additional information about an audio streaming interface to
+/// the USB host.
+//------------------------------------------------------------------------------
+typedef struct {
+
+    /// Size of descriptor in bytes.
+    unsigned char bLength;
+    /// Descriptor type (AUDGenericDescriptor_INTERFACE).
+    unsigned char bDescriptorType;
+    /// Descriptor subtype (AUDStreamingInterfaceDescriptor_GENERAL).
+    unsigned char bDescriptorSubType;
+    /// Terminal ID to which the interface is connected.
+    unsigned char bTerminalLink;
+    /// Delay introduced by the data path, in number of frames.
+    unsigned char bDelay;
+    /// Audio data format used by this interface.
+    unsigned short wFormatTag;
+
+} __attribute__ ((packed)) AUDStreamingInterfaceDescriptor; // GCC
+
+#ifdef __ICCARM__          // IAR
+#pragma pack()             // IAR
+#endif                     // IAR
+
+#endif //#ifndef AUDSTREAMINGINTERFACEDESCRIPTOR_H
+