/*
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
*
* \section Sec_Dependencies Module Source Dependencies
* The following files must be built with any user project that uses this module:
- * - LUFA/Drivers/USB/Class/Device/Audio.c <i>(Makefile source module name: LUFA_SRC_USBCLASS)</i>
+ * - LUFA/Drivers/USB/Class/Device/AudioClassDevice.c <i>(Makefile source module name: LUFA_SRC_USBCLASS)</i>
*
* \section Sec_ModDescription Module Description
* Device Mode USB Class driver framework interface, for the Audio 1.0 USB Class driver.
*/
typedef struct
{
- const struct
+ struct
{
+ uint8_t ControlInterfaceNumber; /**< Index of the Audio Control interface within the device this
+ * structure controls.
+ */
uint8_t StreamingInterfaceNumber; /**< Index of the Audio Streaming interface within the device this
* structure controls.
*/
* \param[in,out] AudioInterfaceInfo Pointer to a structure containing an Audio Class configuration and state.
*/
void Audio_Device_ProcessControlRequest(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo) ATTR_NON_NULL_PTR_ARG(1);
-
+
/** Audio class driver callback for the setting and retrieval of streaming endpoint properties. This callback must be implemented
* in the user application to handle property manipulations on streaming audio endpoints.
*
* \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,
const uint8_t EndpointAddress,
const uint8_t EndpointControl,
uint16_t* const DataLength,
- uint8_t* Data);
+ uint8_t* Data) ATTR_NON_NULL_PTR_ARG(1);
+
+ /** 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) ATTR_NON_NULL_PTR_ARG(1);
/** Audio class driver event for an Audio Stream start/stop change. This event fires each time the device receives a stream enable or
* disable control request from the host, to start and stop the audio stream. The current state of the stream can be determined by the
/* Function Prototypes: */
#if defined(__INCLUDE_FROM_AUDIO_DEVICE_C)
void Audio_Device_Event_Stub(void) ATTR_CONST;
-
+
void EVENT_Audio_Device_StreamStartStop(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo)
ATTR_WEAK ATTR_NON_NULL_PTR_ARG(1) ATTR_ALIAS(Audio_Device_Event_Stub);
#endif
- #endif
+ #endif
/* Disable C linkage for C++ Compilers: */
#if defined(__cplusplus)
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