X-Git-Url: http://git.linex4red.de/pub/USBasp.git/blobdiff_plain/f201f6697b7f99b63389509b42112026b8f6f76f..a9abe1fdea5ccf67aaccab6fdde300d6fcf2d15a:/Demos/Device/ClassDriver/AudioInput/AudioInput.c

diff --git a/Demos/Device/ClassDriver/AudioInput/AudioInput.c b/Demos/Device/ClassDriver/AudioInput/AudioInput.c
index f11122fd3..eb1b4bc6a 100644
--- a/Demos/Device/ClassDriver/AudioInput/AudioInput.c
+++ b/Demos/Device/ClassDriver/AudioInput/AudioInput.c
@@ -1,13 +1,13 @@
 /*
              LUFA Library
-     Copyright (C) Dean Camera, 2011.
+     Copyright (C) Dean Camera, 2012.
 
   dean [at] fourwalledcubicle [dot] com
            www.lufa-lib.org
 */
 
 /*
-  Copyright 2011  Dean Camera (dean [at] fourwalledcubicle [dot] com)
+  Copyright 2012  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
@@ -186,7 +186,7 @@ void EVENT_USB_Device_ControlRequest(void)
  *  \param[in,out] Data                Pointer to a location where the parameter data is stored for SET operations, or where
  *                                     the retrieved data is to be stored for GET operations.
  *
- *  \return Boolean true if the property get/set was successful, false otherwise
+ *  \return Boolean \c true if the property get/set was successful, \c false otherwise
  */
 bool CALLBACK_Audio_Device_GetSetEndpointProperty(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo,
                                                   const uint8_t EndpointProperty,
@@ -234,3 +234,35 @@ bool CALLBACK_Audio_Device_GetSetEndpointProperty(USB_ClassInfo_Audio_Device_t*
 	return false;
 }
 
+/** Audio class driver callback for the setting and retrieval of streaming interface properties. This callback must be implemented
+ *  in the user application to handle property manipulations on streaming audio interfaces.
+ *
+ *  When the DataLength parameter is NULL, this callback should only indicate whether the specified operation is valid for
+ *  the given entity and should return as fast as possible. When non-NULL, this value may be altered for GET operations
+ *  to indicate the size of the retreived data.
+ *
+ *  \note The length of the retrieved data stored into the Data buffer on GET operations should not exceed the initial value
+ *        of the \c DataLength parameter.
+ *
+ *  \param[in,out] AudioInterfaceInfo  Pointer to a structure containing an Audio Class configuration and state.
+ *  \param[in]     Property            Property of the interface to get or set, a value from \ref Audio_ClassRequests_t.
+ *  \param[in]     EntityAddress       Address of the audio entity whose property is being referenced.
+ *  \param[in]     Parameter           Parameter of the entity to get or set, specific to each type of entity (see USB Audio specification).
+ *  \param[in,out] DataLength          For SET operations, the length of the parameter data to set. For GET operations, the maximum
+ *                                     length of the retrieved data. When NULL, the function should return whether the given property
+ *                                     and parameter is valid for the requested endpoint without reading or modifying the Data buffer.
+ *  \param[in,out] Data                Pointer to a location where the parameter data is stored for SET operations, or where
+ *                                     the retrieved data is to be stored for GET operations.
+ *
+ *  \return Boolean \c true if the property GET/SET was successful, \c false otherwise
+ */
+bool CALLBACK_Audio_Device_GetSetInterfaceProperty(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo,
+                                                   const uint8_t Property,
+                                                   const uint8_t EntityAddress,
+                                                   const uint16_t Parameter,
+                                                   uint16_t* const DataLength,
+                                                   uint8_t* Data) 
+{
+	/* No audio interface entities in the device descriptor, thus no properties to get or set. */
+	return false;
+}