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Added new callback to the Audio Class driver to allow for endpoint control manipulations such as data sample rates.

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Modified the Class Driver AudioInput and AudioOutput demos to support multiple sample rates.

Fixed KeyboardHost and KeyboardHostWithParser demos displaying incorrect values when numerical keys were pressed.

Fix broken LowLevel audio demo descriptors.

Minor documentation fixes.
This commit is contained in:
Dean Camera 2011-06-03 07:56:12 +00:00
parent c2135f2776
commit 2731c3a8ae
20 changed files with 336 additions and 51 deletions
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29
LUFA/Drivers/USB/Class/Device/Audio.h
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@ -130,6 +130,35 @@
* \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.
*
* When the DataLength parameter is NULL, this callback should only indicate whether the specified operation is valid for
* the given endpoint index, 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] EndpointProperty Property of the endpoint to get or set, a value from \ref Audio_ClassRequests_t.
* \param[in] EndpointIndex Index of the streaming endpoint whose property is being referenced.
* \param[in] EndpointControl Parameter of the endpoint to get or set, a value from \ref Audio_EndpointControls_t.
* \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 true if the property get/set was successful, false otherwise
*/
bool CALLBACK_Audio_GetSetEndpointProperty(USB_ClassInfo_Audio_Device_t* const AudioInterfaceInfo,
const uint8_t EndpointProperty,
const uint8_t EndpointIndex,
const uint8_t EndpointControl,
uint16_t* const DataLength,
uint8_t* Data);
/* Inline Functions: */
/** General management task for a given Audio class interface, required for the correct operation of the interface. This should